net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2020 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy
 257 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 258         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 259         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 260                                         .len = U8_MAX },
 261         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 262                                              .len = U8_MAX },
 263 };
 264
 265 static const struct nla_policy
 266 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 267         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 268         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 269         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 270                 NLA_POLICY_MAX(NLA_U8, 15),
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 272         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 273                 NLA_POLICY_MAX(NLA_U8, 15),
 274         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 275                 NLA_POLICY_MAX(NLA_U8, 31),
 276         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 278         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 279         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 280         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 281 };
 282
 283 static const struct nla_policy
 284 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 285         [NL80211_PMSR_TYPE_FTM] =
 286                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 287 };
 288
 289 static const struct nla_policy
 290 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 291         [NL80211_PMSR_REQ_ATTR_DATA] =
 292                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 293         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 294 };
 295
 296 static const struct nla_policy
 297 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 298         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 299         /*
 300          * we could specify this again to be the top-level policy,
 301          * but that would open us up to recursion problems ...
 302          */
 303         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 304         [NL80211_PMSR_PEER_ATTR_REQ] =
 305                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 306         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 314         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 315         [NL80211_PMSR_ATTR_PEERS] =
 316                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 317 };
 318
 319 static const struct nla_policy
 320 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 321         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 324                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 325 };
 326
 327 static const struct nla_policy
 328 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 329         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 330         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 331         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 336         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 337         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 338         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 339         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 340         [NL80211_TID_CONFIG_ATTR_NOACK] =
 341                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 342         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 343         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 344         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 345                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 346         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 347                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 348 };
 349
 350 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 351         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 352         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 353         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 354                                       .len = 20-1 },
 355         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 356
 357         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 358         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 359         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 360                                                 NL80211_EDMG_CHANNELS_MIN,
 361                                                 NL80211_EDMG_CHANNELS_MAX),
 362         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 363                                                 NL80211_EDMG_BW_CONFIG_MIN,
 364                                                 NL80211_EDMG_BW_CONFIG_MAX),
 365
 366         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 367         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 368         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 369
 370         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 371         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 372         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 373         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 374         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 375         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 376
 377         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 378         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 379         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 380
 381         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 382         [NL80211_ATTR_PREV_BSSID] = {
 383                 .type = NLA_EXACT_LEN_WARN,
 384                 .len = ETH_ALEN
 385         },
 386
 387         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 388         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 389                                     .len = WLAN_MAX_KEY_LEN },
 390         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 391         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 392         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 394         [NL80211_ATTR_KEY_TYPE] =
 395                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 396
 397         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 398         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 399         [NL80211_ATTR_BEACON_HEAD] =
 400                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 401                                        IEEE80211_MAX_DATA_LEN),
 402         [NL80211_ATTR_BEACON_TAIL] =
 403                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 404                                        IEEE80211_MAX_DATA_LEN),
 405         [NL80211_ATTR_STA_AID] =
 406                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 407         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 408         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 409         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 410                                                .len = NL80211_MAX_SUPP_RATES },
 411         [NL80211_ATTR_STA_PLINK_ACTION] =
 412                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 413         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 414                 NLA_POLICY_RANGE(NLA_U8,
 415                                  NL80211_TX_POWER_AUTOMATIC,
 416                                  NL80211_TX_POWER_FIXED),
 417         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 418         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 419         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 420         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 421                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 422         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 423
 424         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 425         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 426
 427         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 428         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 429         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 430         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 431                                            .len = NL80211_MAX_SUPP_RATES },
 432         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 433
 434         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 435         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 436
 437         [NL80211_ATTR_HT_CAPABILITY] = {
 438                 .type = NLA_EXACT_LEN_WARN,
 439                 .len = NL80211_HT_CAPABILITY_LEN
 440         },
 441
 442         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 443         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 444                                                    validate_ie_attr,
 445                                                    IEEE80211_MAX_DATA_LEN),
 446         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 447         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 448
 449         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 450                                 .len = IEEE80211_MAX_SSID_LEN },
 451         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 452         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 453         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 454         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 455         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 456                                                   NL80211_MFP_NO,
 457                                                   NL80211_MFP_OPTIONAL),
 458         [NL80211_ATTR_STA_FLAGS2] = {
 459                 .len = sizeof(struct nl80211_sta_flag_update),
 460         },
 461         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 463         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 464         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 465         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 466         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 467         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 469         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 470         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 471         [NL80211_ATTR_PMKID] = {
 472                 .type = NLA_EXACT_LEN_WARN,
 473                 .len = WLAN_PMKID_LEN
 474         },
 475         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 476         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 477         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 478         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 479                                  .len = IEEE80211_MAX_DATA_LEN },
 480         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 481         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 482                                                    NL80211_PS_DISABLED,
 483                                                    NL80211_PS_ENABLED),
 484         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 485         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 486         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 487         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 488         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 489         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 490         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 491         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 492         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 493         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 494         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 495         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 496         [NL80211_ATTR_STA_PLINK_STATE] =
 497                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 498         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 499         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 500         [NL80211_ATTR_MESH_PEER_AID] =
 501                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 502         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 503         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 504         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 505         [NL80211_ATTR_HIDDEN_SSID] =
 506                 NLA_POLICY_RANGE(NLA_U32,
 507                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 508                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 509         [NL80211_ATTR_IE_PROBE_RESP] =
 510                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 511                                        IEEE80211_MAX_DATA_LEN),
 512         [NL80211_ATTR_IE_ASSOC_RESP] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 516         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 517         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 519         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 520         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 521         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 522         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 523         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 524         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 525         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 526                                       .len = IEEE80211_MAX_DATA_LEN },
 527         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 528         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 529         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 530                 .len = NL80211_HT_CAPABILITY_LEN
 531         },
 532         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 533         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 534         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 535         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 536         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 538         [NL80211_ATTR_VHT_CAPABILITY] = {
 539                 .type = NLA_EXACT_LEN_WARN,
 540                 .len = NL80211_VHT_CAPABILITY_LEN
 541         },
 542         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 543         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 544         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 545         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 546                 NLA_POLICY_RANGE(NLA_U32,
 547                                  NL80211_MESH_POWER_UNKNOWN + 1,
 548                                  NL80211_MESH_POWER_MAX),
 549         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 550         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 551         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 552         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 553         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 554         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 555         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 556                 .len = NL80211_VHT_CAPABILITY_LEN,
 557         },
 558         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 559         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 560                                   .len = IEEE80211_MAX_DATA_LEN },
 561         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 562         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
 563         [NL80211_ATTR_PEER_AID] =
 564                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 565         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 566         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 568         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 569         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 570         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 572         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 574         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 575         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 576         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 577         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 578                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 579         [NL80211_ATTR_MAC_HINT] = {
 580                 .type = NLA_EXACT_LEN_WARN,
 581                 .len = ETH_ALEN
 582         },
 583         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 584         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 585         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 586         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 587         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 588         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 589         [NL80211_ATTR_USER_PRIO] =
 590                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 591         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 592         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 593         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 594         [NL80211_ATTR_MAC_MASK] = {
 595                 .type = NLA_EXACT_LEN_WARN,
 596                 .len = ETH_ALEN
 597         },
 598         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 600         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 601         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 602         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 603         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 604         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 605                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 606         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 607                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 608         },
 609         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 610                 .type = NLA_EXACT_LEN_WARN,
 611                 .len = ETH_ALEN
 612         },
 613         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 614         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 615         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 616         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 617                                     .len = FILS_MAX_KEK_LEN },
 618         [NL80211_ATTR_FILS_NONCES] = {
 619                 .type = NLA_EXACT_LEN_WARN,
 620                 .len = 2 * FILS_NONCE_LEN
 621         },
 622         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 623         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 624         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 625         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 626                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 627         },
 628         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 629         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 630                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 631         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 632                                           .len = FILS_ERP_MAX_REALM_LEN },
 633         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 634         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 635                                         .len = FILS_ERP_MAX_RRK_LEN },
 636         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 637         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 638         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 640
 641         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 642         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 643         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 644         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 645                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 646
 647         [NL80211_ATTR_FTM_RESPONDER] =
 648                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 649         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 650         [NL80211_ATTR_PEER_MEASUREMENTS] =
 651                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 652         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 653         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 654                                         .len = SAE_PASSWORD_MAX_LEN },
 655         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 656         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 657         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 658         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 659         [NL80211_ATTR_TID_CONFIG] =
 660                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 661         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 662         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 663         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 664 };
 665
 666 /* policy for the key attributes */
 667 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 668         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 669         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 670         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 671         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 672         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 673         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 674         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 675         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 676         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 677 };
 678
 679 /* policy for the key default flags */
 680 static const struct nla_policy
 681 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 682         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 683         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 684 };
 685
 686 #ifdef CONFIG_PM
 687 /* policy for WoWLAN attributes */
 688 static const struct nla_policy
 689 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 690         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 691         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 692         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 693         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 694         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 695         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 696         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 697         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 698         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 699         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 700 };
 701
 702 static const struct nla_policy
 703 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 704         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 705         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 706         [NL80211_WOWLAN_TCP_DST_MAC] = {
 707                 .type = NLA_EXACT_LEN_WARN,
 708                 .len = ETH_ALEN
 709         },
 710         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 711         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 712         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 713         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 714                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 715         },
 716         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 717                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 718         },
 719         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 720         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 721         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 722 };
 723 #endif /* CONFIG_PM */
 724
 725 /* policy for coalesce rule attributes */
 726 static const struct nla_policy
 727 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 728         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 729         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 730                 NLA_POLICY_RANGE(NLA_U32,
 731                                  NL80211_COALESCE_CONDITION_MATCH,
 732                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 733         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 734 };
 735
 736 /* policy for GTK rekey offload attributes */
 737 static const struct nla_policy
 738 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 739         [NL80211_REKEY_DATA_KEK] = {
 740                 .type = NLA_EXACT_LEN_WARN,
 741                 .len = NL80211_KEK_LEN,
 742         },
 743         [NL80211_REKEY_DATA_KCK] = {
 744                 .type = NLA_EXACT_LEN_WARN,
 745                 .len = NL80211_KCK_LEN,
 746         },
 747         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 748                 .type = NLA_EXACT_LEN_WARN,
 749                 .len = NL80211_REPLAY_CTR_LEN
 750         },
 751 };
 752
 753 static const struct nla_policy
 754 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 755         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 756         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 757         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 758         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 759 };
 760
 761 static const struct nla_policy
 762 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 763         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 764                                                  .len = IEEE80211_MAX_SSID_LEN },
 765         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 766                 .type = NLA_EXACT_LEN_WARN,
 767                 .len = ETH_ALEN
 768         },
 769         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 770         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 771                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 772 };
 773
 774 static const struct nla_policy
 775 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 776         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 777         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 778 };
 779
 780 static const struct nla_policy
 781 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 782         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 783         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 784         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 785                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 786         },
 787 };
 788
 789 /* policy for NAN function attributes */
 790 static const struct nla_policy
 791 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 792         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 793         [NL80211_NAN_FUNC_SERVICE_ID] = {
 794                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 795         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 796         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 797         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 798         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 799         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 800         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 801                 .type = NLA_EXACT_LEN_WARN,
 802                 .len = ETH_ALEN
 803         },
 804         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 805         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 806         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 807                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 808         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 809         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 810         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 811         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 812         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 813 };
 814
 815 /* policy for Service Response Filter attributes */
 816 static const struct nla_policy
 817 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 818         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 819         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 820                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 821         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 822         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 823 };
 824
 825 /* policy for packet pattern attributes */
 826 static const struct nla_policy
 827 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 828         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 829         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 830         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 831 };
 832
 833 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 834                               struct cfg80211_registered_device **rdev,
 835                               struct wireless_dev **wdev)
 836 {
 837         int err;
 838
 839         if (!cb->args[0]) {
 840                 struct nlattr **attrbuf;
 841
 842                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 843                                   GFP_KERNEL);
 844                 if (!attrbuf)
 845                         return -ENOMEM;
 846
 847                 err = nlmsg_parse_deprecated(cb->nlh,
 848                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 849                                              attrbuf, nl80211_fam.maxattr,
 850                                              nl80211_policy, NULL);
 851                 if (err) {
 852                         kfree(attrbuf);
 853                         return err;
 854                 }
 855
 856                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 857                                                    attrbuf);
 858                 kfree(attrbuf);
 859                 if (IS_ERR(*wdev))
 860                         return PTR_ERR(*wdev);
 861                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 862                 /* 0 is the first index - add 1 to parse only once */
 863                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 864                 cb->args[1] = (*wdev)->identifier;
 865         } else {
 866                 /* subtract the 1 again here */
 867                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 868                 struct wireless_dev *tmp;
 869
 870                 if (!wiphy)
 871                         return -ENODEV;
 872                 *rdev = wiphy_to_rdev(wiphy);
 873                 *wdev = NULL;
 874
 875                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 876                         if (tmp->identifier == cb->args[1]) {
 877                                 *wdev = tmp;
 878                                 break;
 879                         }
 880                 }
 881
 882                 if (!*wdev)
 883                         return -ENODEV;
 884         }
 885
 886         return 0;
 887 }
 888
 889 /* message building helper */
 890 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 891                      int flags, u8 cmd)
 892 {
 893         /* since there is no private header just add the generic one */
 894         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 895 }
 896
 897 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 898                                      const struct ieee80211_reg_rule *rule)
 899 {
 900         int j;
 901         struct nlattr *nl_wmm_rules =
 902                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 903
 904         if (!nl_wmm_rules)
 905                 goto nla_put_failure;
 906
 907         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 908                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 909
 910                 if (!nl_wmm_rule)
 911                         goto nla_put_failure;
 912
 913                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 914                                 rule->wmm_rule.client[j].cw_min) ||
 915                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 916                                 rule->wmm_rule.client[j].cw_max) ||
 917                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 918                                rule->wmm_rule.client[j].aifsn) ||
 919                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 920                                 rule->wmm_rule.client[j].cot))
 921                         goto nla_put_failure;
 922
 923                 nla_nest_end(msg, nl_wmm_rule);
 924         }
 925         nla_nest_end(msg, nl_wmm_rules);
 926
 927         return 0;
 928
 929 nla_put_failure:
 930         return -ENOBUFS;
 931 }
 932
 933 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 934                                    struct ieee80211_channel *chan,
 935                                    bool large)
 936 {
 937         /* Some channels must be completely excluded from the
 938          * list to protect old user-space tools from breaking
 939          */
 940         if (!large && chan->flags &
 941             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 942                 return 0;
 943
 944         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 945                         chan->center_freq))
 946                 goto nla_put_failure;
 947
 948         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 949             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 950                 goto nla_put_failure;
 951         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 952                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 953                         goto nla_put_failure;
 954                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 955                         goto nla_put_failure;
 956         }
 957         if (chan->flags & IEEE80211_CHAN_RADAR) {
 958                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 959                         goto nla_put_failure;
 960                 if (large) {
 961                         u32 time;
 962
 963                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 964
 965                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 966                                         chan->dfs_state))
 967                                 goto nla_put_failure;
 968                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 969                                         time))
 970                                 goto nla_put_failure;
 971                         if (nla_put_u32(msg,
 972                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 973                                         chan->dfs_cac_ms))
 974                                 goto nla_put_failure;
 975                 }
 976         }
 977
 978         if (large) {
 979                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 980                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 981                         goto nla_put_failure;
 982                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 983                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 984                         goto nla_put_failure;
 985                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 986                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 987                         goto nla_put_failure;
 988                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 989                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 990                         goto nla_put_failure;
 991                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 992                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 993                         goto nla_put_failure;
 994                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 995                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 996                         goto nla_put_failure;
 997                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 998                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 999                         goto nla_put_failure;
1000                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1001                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1002                         goto nla_put_failure;
1003                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1004                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1005                         goto nla_put_failure;
1006         }
1007
1008         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1009                         DBM_TO_MBM(chan->max_power)))
1010                 goto nla_put_failure;
1011
1012         if (large) {
1013                 const struct ieee80211_reg_rule *rule =
1014                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1015
1016                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1017                         if (nl80211_msg_put_wmm_rules(msg, rule))
1018                                 goto nla_put_failure;
1019                 }
1020         }
1021
1022         return 0;
1023
1024  nla_put_failure:
1025         return -ENOBUFS;
1026 }
1027
1028 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1029                                   struct cfg80211_txq_stats *txqstats,
1030                                   int attrtype)
1031 {
1032         struct nlattr *txqattr;
1033
1034 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1035         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1036             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1037                 return false;                                             \
1038         } while (0)
1039
1040         txqattr = nla_nest_start_noflag(msg, attrtype);
1041         if (!txqattr)
1042                 return false;
1043
1044         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1045         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1046         PUT_TXQVAL_U32(FLOWS, flows);
1047         PUT_TXQVAL_U32(DROPS, drops);
1048         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1049         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1050         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1051         PUT_TXQVAL_U32(COLLISIONS, collisions);
1052         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1053         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1054         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1055         nla_nest_end(msg, txqattr);
1056
1057 #undef PUT_TXQVAL_U32
1058         return true;
1059 }
1060
1061 /* netlink command implementations */
1062
1063 struct key_parse {
1064         struct key_params p;
1065         int idx;
1066         int type;
1067         bool def, defmgmt, defbeacon;
1068         bool def_uni, def_multi;
1069 };
1070
1071 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1072                                  struct key_parse *k)
1073 {
1074         struct nlattr *tb[NL80211_KEY_MAX + 1];
1075         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1076                                               nl80211_key_policy,
1077                                               info->extack);
1078         if (err)
1079                 return err;
1080
1081         k->def = !!tb[NL80211_KEY_DEFAULT];
1082         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1083         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1084
1085         if (k->def) {
1086                 k->def_uni = true;
1087                 k->def_multi = true;
1088         }
1089         if (k->defmgmt || k->defbeacon)
1090                 k->def_multi = true;
1091
1092         if (tb[NL80211_KEY_IDX])
1093                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1094
1095         if (tb[NL80211_KEY_DATA]) {
1096                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1097                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1098         }
1099
1100         if (tb[NL80211_KEY_SEQ]) {
1101                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1102                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1103         }
1104
1105         if (tb[NL80211_KEY_CIPHER])
1106                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1107
1108         if (tb[NL80211_KEY_TYPE])
1109                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1110
1111         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1112                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1113
1114                 err = nla_parse_nested_deprecated(kdt,
1115                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1116                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1117                                                   nl80211_key_default_policy,
1118                                                   info->extack);
1119                 if (err)
1120                         return err;
1121
1122                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1123                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1124         }
1125
1126         if (tb[NL80211_KEY_MODE])
1127                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1128
1129         return 0;
1130 }
1131
1132 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1133 {
1134         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1135                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1136                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1137         }
1138
1139         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1140                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1141                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1142         }
1143
1144         if (info->attrs[NL80211_ATTR_KEY_IDX])
1145                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1146
1147         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1148                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1149
1150         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1151         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1152
1153         if (k->def) {
1154                 k->def_uni = true;
1155                 k->def_multi = true;
1156         }
1157         if (k->defmgmt)
1158                 k->def_multi = true;
1159
1160         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1161                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1162
1163         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1164                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1165                 int err = nla_parse_nested_deprecated(kdt,
1166                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1167                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1168                                                       nl80211_key_default_policy,
1169                                                       info->extack);
1170                 if (err)
1171                         return err;
1172
1173                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1174                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1181 {
1182         int err;
1183
1184         memset(k, 0, sizeof(*k));
1185         k->idx = -1;
1186         k->type = -1;
1187
1188         if (info->attrs[NL80211_ATTR_KEY])
1189                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1190         else
1191                 err = nl80211_parse_key_old(info, k);
1192
1193         if (err)
1194                 return err;
1195
1196         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1197             (k->defbeacon ? 1 : 0) > 1) {
1198                 GENL_SET_ERR_MSG(info,
1199                                  "key with multiple default flags is invalid");
1200                 return -EINVAL;
1201         }
1202
1203         if (k->defmgmt || k->defbeacon) {
1204                 if (k->def_uni || !k->def_multi) {
1205                         GENL_SET_ERR_MSG(info,
1206                                          "defmgmt/defbeacon key must be mcast");
1207                         return -EINVAL;
1208                 }
1209         }
1210
1211         if (k->idx != -1) {
1212                 if (k->defmgmt) {
1213                         if (k->idx < 4 || k->idx > 5) {
1214                                 GENL_SET_ERR_MSG(info,
1215                                                  "defmgmt key idx not 4 or 5");
1216                                 return -EINVAL;
1217                         }
1218                 } else if (k->defbeacon) {
1219                         if (k->idx < 6 || k->idx > 7) {
1220                                 GENL_SET_ERR_MSG(info,
1221                                                  "defbeacon key idx not 6 or 7");
1222                                 return -EINVAL;
1223                         }
1224                 } else if (k->def) {
1225                         if (k->idx < 0 || k->idx > 3) {
1226                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1227                                 return -EINVAL;
1228                         }
1229                 } else {
1230                         if (k->idx < 0 || k->idx > 7) {
1231                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1232                                 return -EINVAL;
1233                         }
1234                 }
1235         }
1236
1237         return 0;
1238 }
1239
1240 static struct cfg80211_cached_keys *
1241 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1242                        struct genl_info *info, bool *no_ht)
1243 {
1244         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1245         struct key_parse parse;
1246         struct nlattr *key;
1247         struct cfg80211_cached_keys *result;
1248         int rem, err, def = 0;
1249         bool have_key = false;
1250
1251         nla_for_each_nested(key, keys, rem) {
1252                 have_key = true;
1253                 break;
1254         }
1255
1256         if (!have_key)
1257                 return NULL;
1258
1259         result = kzalloc(sizeof(*result), GFP_KERNEL);
1260         if (!result)
1261                 return ERR_PTR(-ENOMEM);
1262
1263         result->def = -1;
1264
1265         nla_for_each_nested(key, keys, rem) {
1266                 memset(&parse, 0, sizeof(parse));
1267                 parse.idx = -1;
1268
1269                 err = nl80211_parse_key_new(info, key, &parse);
1270                 if (err)
1271                         goto error;
1272                 err = -EINVAL;
1273                 if (!parse.p.key)
1274                         goto error;
1275                 if (parse.idx < 0 || parse.idx > 3) {
1276                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1277                         goto error;
1278                 }
1279                 if (parse.def) {
1280                         if (def) {
1281                                 GENL_SET_ERR_MSG(info,
1282                                                  "only one key can be default");
1283                                 goto error;
1284                         }
1285                         def = 1;
1286                         result->def = parse.idx;
1287                         if (!parse.def_uni || !parse.def_multi)
1288                                 goto error;
1289                 } else if (parse.defmgmt)
1290                         goto error;
1291                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1292                                                      parse.idx, false, NULL);
1293                 if (err)
1294                         goto error;
1295                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1296                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1297                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1298                         err = -EINVAL;
1299                         goto error;
1300                 }
1301                 result->params[parse.idx].cipher = parse.p.cipher;
1302                 result->params[parse.idx].key_len = parse.p.key_len;
1303                 result->params[parse.idx].key = result->data[parse.idx];
1304                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1305
1306                 /* must be WEP key if we got here */
1307                 if (no_ht)
1308                         *no_ht = true;
1309         }
1310
1311         if (result->def < 0) {
1312                 err = -EINVAL;
1313                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1314                 goto error;
1315         }
1316
1317         return result;
1318  error:
1319         kfree(result);
1320         return ERR_PTR(err);
1321 }
1322
1323 static int nl80211_key_allowed(struct wireless_dev *wdev)
1324 {
1325         ASSERT_WDEV_LOCK(wdev);
1326
1327         switch (wdev->iftype) {
1328         case NL80211_IFTYPE_AP:
1329         case NL80211_IFTYPE_AP_VLAN:
1330         case NL80211_IFTYPE_P2P_GO:
1331         case NL80211_IFTYPE_MESH_POINT:
1332                 break;
1333         case NL80211_IFTYPE_ADHOC:
1334         case NL80211_IFTYPE_STATION:
1335         case NL80211_IFTYPE_P2P_CLIENT:
1336                 if (!wdev->current_bss)
1337                         return -ENOLINK;
1338                 break;
1339         case NL80211_IFTYPE_UNSPECIFIED:
1340         case NL80211_IFTYPE_OCB:
1341         case NL80211_IFTYPE_MONITOR:
1342         case NL80211_IFTYPE_NAN:
1343         case NL80211_IFTYPE_P2P_DEVICE:
1344         case NL80211_IFTYPE_WDS:
1345         case NUM_NL80211_IFTYPES:
1346                 return -EINVAL;
1347         }
1348
1349         return 0;
1350 }
1351
1352 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1353                                                         struct nlattr *tb)
1354 {
1355         struct ieee80211_channel *chan;
1356
1357         if (tb == NULL)
1358                 return NULL;
1359         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1360         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1361                 return NULL;
1362         return chan;
1363 }
1364
1365 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1366 {
1367         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1368         int i;
1369
1370         if (!nl_modes)
1371                 goto nla_put_failure;
1372
1373         i = 0;
1374         while (ifmodes) {
1375                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1376                         goto nla_put_failure;
1377                 ifmodes >>= 1;
1378                 i++;
1379         }
1380
1381         nla_nest_end(msg, nl_modes);
1382         return 0;
1383
1384 nla_put_failure:
1385         return -ENOBUFS;
1386 }
1387
1388 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1389                                           struct sk_buff *msg,
1390                                           bool large)
1391 {
1392         struct nlattr *nl_combis;
1393         int i, j;
1394
1395         nl_combis = nla_nest_start_noflag(msg,
1396                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1397         if (!nl_combis)
1398                 goto nla_put_failure;
1399
1400         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1401                 const struct ieee80211_iface_combination *c;
1402                 struct nlattr *nl_combi, *nl_limits;
1403
1404                 c = &wiphy->iface_combinations[i];
1405
1406                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1407                 if (!nl_combi)
1408                         goto nla_put_failure;
1409
1410                 nl_limits = nla_nest_start_noflag(msg,
1411                                                   NL80211_IFACE_COMB_LIMITS);
1412                 if (!nl_limits)
1413                         goto nla_put_failure;
1414
1415                 for (j = 0; j < c->n_limits; j++) {
1416                         struct nlattr *nl_limit;
1417
1418                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1419                         if (!nl_limit)
1420                                 goto nla_put_failure;
1421                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1422                                         c->limits[j].max))
1423                                 goto nla_put_failure;
1424                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1425                                                 c->limits[j].types))
1426                                 goto nla_put_failure;
1427                         nla_nest_end(msg, nl_limit);
1428                 }
1429
1430                 nla_nest_end(msg, nl_limits);
1431
1432                 if (c->beacon_int_infra_match &&
1433                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1434                         goto nla_put_failure;
1435                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1436                                 c->num_different_channels) ||
1437                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1438                                 c->max_interfaces))
1439                         goto nla_put_failure;
1440                 if (large &&
1441                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1442                                 c->radar_detect_widths) ||
1443                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1444                                 c->radar_detect_regions)))
1445                         goto nla_put_failure;
1446                 if (c->beacon_int_min_gcd &&
1447                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1448                                 c->beacon_int_min_gcd))
1449                         goto nla_put_failure;
1450
1451                 nla_nest_end(msg, nl_combi);
1452         }
1453
1454         nla_nest_end(msg, nl_combis);
1455
1456         return 0;
1457 nla_put_failure:
1458         return -ENOBUFS;
1459 }
1460
1461 #ifdef CONFIG_PM
1462 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1463                                         struct sk_buff *msg)
1464 {
1465         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1466         struct nlattr *nl_tcp;
1467
1468         if (!tcp)
1469                 return 0;
1470
1471         nl_tcp = nla_nest_start_noflag(msg,
1472                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1473         if (!nl_tcp)
1474                 return -ENOBUFS;
1475
1476         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1477                         tcp->data_payload_max))
1478                 return -ENOBUFS;
1479
1480         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1481                         tcp->data_payload_max))
1482                 return -ENOBUFS;
1483
1484         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1485                 return -ENOBUFS;
1486
1487         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1488                                 sizeof(*tcp->tok), tcp->tok))
1489                 return -ENOBUFS;
1490
1491         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1492                         tcp->data_interval_max))
1493                 return -ENOBUFS;
1494
1495         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1496                         tcp->wake_payload_max))
1497                 return -ENOBUFS;
1498
1499         nla_nest_end(msg, nl_tcp);
1500         return 0;
1501 }
1502
1503 static int nl80211_send_wowlan(struct sk_buff *msg,
1504                                struct cfg80211_registered_device *rdev,
1505                                bool large)
1506 {
1507         struct nlattr *nl_wowlan;
1508
1509         if (!rdev->wiphy.wowlan)
1510                 return 0;
1511
1512         nl_wowlan = nla_nest_start_noflag(msg,
1513                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1514         if (!nl_wowlan)
1515                 return -ENOBUFS;
1516
1517         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1518              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1519             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1520              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1521             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1522              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1523             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1524              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1525             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1526              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1527             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1528              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1529             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1530              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1531             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1532              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1533                 return -ENOBUFS;
1534
1535         if (rdev->wiphy.wowlan->n_patterns) {
1536                 struct nl80211_pattern_support pat = {
1537                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1538                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1539                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1540                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1541                 };
1542
1543                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1544                             sizeof(pat), &pat))
1545                         return -ENOBUFS;
1546         }
1547
1548         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1549             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1550                         rdev->wiphy.wowlan->max_nd_match_sets))
1551                 return -ENOBUFS;
1552
1553         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1554                 return -ENOBUFS;
1555
1556         nla_nest_end(msg, nl_wowlan);
1557
1558         return 0;
1559 }
1560 #endif
1561
1562 static int nl80211_send_coalesce(struct sk_buff *msg,
1563                                  struct cfg80211_registered_device *rdev)
1564 {
1565         struct nl80211_coalesce_rule_support rule;
1566
1567         if (!rdev->wiphy.coalesce)
1568                 return 0;
1569
1570         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1571         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1572         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1573         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1574         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1575         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1576
1577         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1578                 return -ENOBUFS;
1579
1580         return 0;
1581 }
1582
1583 static int
1584 nl80211_send_iftype_data(struct sk_buff *msg,
1585                          const struct ieee80211_sband_iftype_data *iftdata)
1586 {
1587         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1588
1589         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1590                                 iftdata->types_mask))
1591                 return -ENOBUFS;
1592
1593         if (he_cap->has_he) {
1594                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1595                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1596                             he_cap->he_cap_elem.mac_cap_info) ||
1597                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1598                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1599                             he_cap->he_cap_elem.phy_cap_info) ||
1600                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1601                             sizeof(he_cap->he_mcs_nss_supp),
1602                             &he_cap->he_mcs_nss_supp) ||
1603                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1604                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1605                         return -ENOBUFS;
1606         }
1607
1608         return 0;
1609 }
1610
1611 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1612                                       struct ieee80211_supported_band *sband)
1613 {
1614         struct nlattr *nl_rates, *nl_rate;
1615         struct ieee80211_rate *rate;
1616         int i;
1617
1618         /* add HT info */
1619         if (sband->ht_cap.ht_supported &&
1620             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1621                      sizeof(sband->ht_cap.mcs),
1622                      &sband->ht_cap.mcs) ||
1623              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1624                          sband->ht_cap.cap) ||
1625              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1626                         sband->ht_cap.ampdu_factor) ||
1627              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1628                         sband->ht_cap.ampdu_density)))
1629                 return -ENOBUFS;
1630
1631         /* add VHT info */
1632         if (sband->vht_cap.vht_supported &&
1633             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1634                      sizeof(sband->vht_cap.vht_mcs),
1635                      &sband->vht_cap.vht_mcs) ||
1636              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1637                          sband->vht_cap.cap)))
1638                 return -ENOBUFS;
1639
1640         if (sband->n_iftype_data) {
1641                 struct nlattr *nl_iftype_data =
1642                         nla_nest_start_noflag(msg,
1643                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1644                 int err;
1645
1646                 if (!nl_iftype_data)
1647                         return -ENOBUFS;
1648
1649                 for (i = 0; i < sband->n_iftype_data; i++) {
1650                         struct nlattr *iftdata;
1651
1652                         iftdata = nla_nest_start_noflag(msg, i + 1);
1653                         if (!iftdata)
1654                                 return -ENOBUFS;
1655
1656                         err = nl80211_send_iftype_data(msg,
1657                                                        &sband->iftype_data[i]);
1658                         if (err)
1659                                 return err;
1660
1661                         nla_nest_end(msg, iftdata);
1662                 }
1663
1664                 nla_nest_end(msg, nl_iftype_data);
1665         }
1666
1667         /* add EDMG info */
1668         if (sband->edmg_cap.channels &&
1669             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1670                        sband->edmg_cap.channels) ||
1671             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1672                        sband->edmg_cap.bw_config)))
1673
1674                 return -ENOBUFS;
1675
1676         /* add bitrates */
1677         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1678         if (!nl_rates)
1679                 return -ENOBUFS;
1680
1681         for (i = 0; i < sband->n_bitrates; i++) {
1682                 nl_rate = nla_nest_start_noflag(msg, i);
1683                 if (!nl_rate)
1684                         return -ENOBUFS;
1685
1686                 rate = &sband->bitrates[i];
1687                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1688                                 rate->bitrate))
1689                         return -ENOBUFS;
1690                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1691                     nla_put_flag(msg,
1692                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1693                         return -ENOBUFS;
1694
1695                 nla_nest_end(msg, nl_rate);
1696         }
1697
1698         nla_nest_end(msg, nl_rates);
1699
1700         return 0;
1701 }
1702
1703 static int
1704 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1705                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1706 {
1707         u16 stypes;
1708         struct nlattr *nl_ftypes, *nl_ifs;
1709         enum nl80211_iftype ift;
1710         int i;
1711
1712         if (!mgmt_stypes)
1713                 return 0;
1714
1715         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1716         if (!nl_ifs)
1717                 return -ENOBUFS;
1718
1719         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1720                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1721                 if (!nl_ftypes)
1722                         return -ENOBUFS;
1723                 i = 0;
1724                 stypes = mgmt_stypes[ift].tx;
1725                 while (stypes) {
1726                         if ((stypes & 1) &&
1727                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1728                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1729                                 return -ENOBUFS;
1730                         stypes >>= 1;
1731                         i++;
1732                 }
1733                 nla_nest_end(msg, nl_ftypes);
1734         }
1735
1736         nla_nest_end(msg, nl_ifs);
1737
1738         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1739         if (!nl_ifs)
1740                 return -ENOBUFS;
1741
1742         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1743                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1744                 if (!nl_ftypes)
1745                         return -ENOBUFS;
1746                 i = 0;
1747                 stypes = mgmt_stypes[ift].rx;
1748                 while (stypes) {
1749                         if ((stypes & 1) &&
1750                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1751                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1752                                 return -ENOBUFS;
1753                         stypes >>= 1;
1754                         i++;
1755                 }
1756                 nla_nest_end(msg, nl_ftypes);
1757         }
1758         nla_nest_end(msg, nl_ifs);
1759
1760         return 0;
1761 }
1762
1763 #define CMD(op, n)                                                      \
1764          do {                                                           \
1765                 if (rdev->ops->op) {                                    \
1766                         i++;                                            \
1767                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1768                                 goto nla_put_failure;                   \
1769                 }                                                       \
1770         } while (0)
1771
1772 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1773                                         struct sk_buff *msg)
1774 {
1775         int i = 0;
1776
1777         /*
1778          * do *NOT* add anything into this function, new things need to be
1779          * advertised only to new versions of userspace that can deal with
1780          * the split (and they can't possibly care about new features...
1781          */
1782         CMD(add_virtual_intf, NEW_INTERFACE);
1783         CMD(change_virtual_intf, SET_INTERFACE);
1784         CMD(add_key, NEW_KEY);
1785         CMD(start_ap, START_AP);
1786         CMD(add_station, NEW_STATION);
1787         CMD(add_mpath, NEW_MPATH);
1788         CMD(update_mesh_config, SET_MESH_CONFIG);
1789         CMD(change_bss, SET_BSS);
1790         CMD(auth, AUTHENTICATE);
1791         CMD(assoc, ASSOCIATE);
1792         CMD(deauth, DEAUTHENTICATE);
1793         CMD(disassoc, DISASSOCIATE);
1794         CMD(join_ibss, JOIN_IBSS);
1795         CMD(join_mesh, JOIN_MESH);
1796         CMD(set_pmksa, SET_PMKSA);
1797         CMD(del_pmksa, DEL_PMKSA);
1798         CMD(flush_pmksa, FLUSH_PMKSA);
1799         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1800                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1801         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1802         CMD(mgmt_tx, FRAME);
1803         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1804         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1805                 i++;
1806                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1807                         goto nla_put_failure;
1808         }
1809         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1810             rdev->ops->join_mesh) {
1811                 i++;
1812                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1813                         goto nla_put_failure;
1814         }
1815         CMD(set_wds_peer, SET_WDS_PEER);
1816         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1817                 CMD(tdls_mgmt, TDLS_MGMT);
1818                 CMD(tdls_oper, TDLS_OPER);
1819         }
1820         if (rdev->wiphy.max_sched_scan_reqs)
1821                 CMD(sched_scan_start, START_SCHED_SCAN);
1822         CMD(probe_client, PROBE_CLIENT);
1823         CMD(set_noack_map, SET_NOACK_MAP);
1824         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1825                 i++;
1826                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1827                         goto nla_put_failure;
1828         }
1829         CMD(start_p2p_device, START_P2P_DEVICE);
1830         CMD(set_mcast_rate, SET_MCAST_RATE);
1831 #ifdef CONFIG_NL80211_TESTMODE
1832         CMD(testmode_cmd, TESTMODE);
1833 #endif
1834
1835         if (rdev->ops->connect || rdev->ops->auth) {
1836                 i++;
1837                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1838                         goto nla_put_failure;
1839         }
1840
1841         if (rdev->ops->disconnect || rdev->ops->deauth) {
1842                 i++;
1843                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1844                         goto nla_put_failure;
1845         }
1846
1847         return i;
1848  nla_put_failure:
1849         return -ENOBUFS;
1850 }
1851
1852 static int
1853 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1854                            struct sk_buff *msg)
1855 {
1856         struct nlattr *ftm;
1857
1858         if (!cap->ftm.supported)
1859                 return 0;
1860
1861         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1862         if (!ftm)
1863                 return -ENOBUFS;
1864
1865         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1866                 return -ENOBUFS;
1867         if (cap->ftm.non_asap &&
1868             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1869                 return -ENOBUFS;
1870         if (cap->ftm.request_lci &&
1871             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1872                 return -ENOBUFS;
1873         if (cap->ftm.request_civicloc &&
1874             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1875                 return -ENOBUFS;
1876         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1877                         cap->ftm.preambles))
1878                 return -ENOBUFS;
1879         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1880                         cap->ftm.bandwidths))
1881                 return -ENOBUFS;
1882         if (cap->ftm.max_bursts_exponent >= 0 &&
1883             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1884                         cap->ftm.max_bursts_exponent))
1885                 return -ENOBUFS;
1886         if (cap->ftm.max_ftms_per_burst &&
1887             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1888                         cap->ftm.max_ftms_per_burst))
1889                 return -ENOBUFS;
1890         if (cap->ftm.trigger_based &&
1891             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1892                 return -ENOBUFS;
1893         if (cap->ftm.non_trigger_based &&
1894             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1895                 return -ENOBUFS;
1896
1897         nla_nest_end(msg, ftm);
1898         return 0;
1899 }
1900
1901 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1902                                   struct sk_buff *msg)
1903 {
1904         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1905         struct nlattr *pmsr, *caps;
1906
1907         if (!cap)
1908                 return 0;
1909
1910         /*
1911          * we don't need to clean up anything here since the caller
1912          * will genlmsg_cancel() if we fail
1913          */
1914
1915         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1916         if (!pmsr)
1917                 return -ENOBUFS;
1918
1919         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1920                 return -ENOBUFS;
1921
1922         if (cap->report_ap_tsf &&
1923             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1924                 return -ENOBUFS;
1925
1926         if (cap->randomize_mac_addr &&
1927             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1928                 return -ENOBUFS;
1929
1930         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1931         if (!caps)
1932                 return -ENOBUFS;
1933
1934         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1935                 return -ENOBUFS;
1936
1937         nla_nest_end(msg, caps);
1938         nla_nest_end(msg, pmsr);
1939
1940         return 0;
1941 }
1942
1943 static int
1944 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1945                               struct sk_buff *msg)
1946 {
1947         int i;
1948         struct nlattr *nested, *nested_akms;
1949         const struct wiphy_iftype_akm_suites *iftype_akms;
1950
1951         if (!rdev->wiphy.num_iftype_akm_suites ||
1952             !rdev->wiphy.iftype_akm_suites)
1953                 return 0;
1954
1955         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1956         if (!nested)
1957                 return -ENOBUFS;
1958
1959         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1960                 nested_akms = nla_nest_start(msg, i + 1);
1961                 if (!nested_akms)
1962                         return -ENOBUFS;
1963
1964                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1965
1966                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1967                                         iftype_akms->iftypes_mask))
1968                         return -ENOBUFS;
1969
1970                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1971                             sizeof(u32) * iftype_akms->n_akm_suites,
1972                             iftype_akms->akm_suites)) {
1973                         return -ENOBUFS;
1974                 }
1975                 nla_nest_end(msg, nested_akms);
1976         }
1977
1978         nla_nest_end(msg, nested);
1979
1980         return 0;
1981 }
1982
1983 static int
1984 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1985                                struct sk_buff *msg)
1986 {
1987         struct nlattr *supp;
1988
1989         if (!rdev->wiphy.tid_config_support.vif &&
1990             !rdev->wiphy.tid_config_support.peer)
1991                 return 0;
1992
1993         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1994         if (!supp)
1995                 return -ENOSPC;
1996
1997         if (rdev->wiphy.tid_config_support.vif &&
1998             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1999                               rdev->wiphy.tid_config_support.vif,
2000                               NL80211_TID_CONFIG_ATTR_PAD))
2001                 goto fail;
2002
2003         if (rdev->wiphy.tid_config_support.peer &&
2004             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2005                               rdev->wiphy.tid_config_support.peer,
2006                               NL80211_TID_CONFIG_ATTR_PAD))
2007                 goto fail;
2008
2009         /* for now we just use the same value ... makes more sense */
2010         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2011                        rdev->wiphy.tid_config_support.max_retry))
2012                 goto fail;
2013         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2014                        rdev->wiphy.tid_config_support.max_retry))
2015                 goto fail;
2016
2017         nla_nest_end(msg, supp);
2018
2019         return 0;
2020 fail:
2021         nla_nest_cancel(msg, supp);
2022         return -ENOBUFS;
2023 }
2024
2025 struct nl80211_dump_wiphy_state {
2026         s64 filter_wiphy;
2027         long start;
2028         long split_start, band_start, chan_start, capa_start;
2029         bool split;
2030 };
2031
2032 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2033                               enum nl80211_commands cmd,
2034                               struct sk_buff *msg, u32 portid, u32 seq,
2035                               int flags, struct nl80211_dump_wiphy_state *state)
2036 {
2037         void *hdr;
2038         struct nlattr *nl_bands, *nl_band;
2039         struct nlattr *nl_freqs, *nl_freq;
2040         struct nlattr *nl_cmds;
2041         enum nl80211_band band;
2042         struct ieee80211_channel *chan;
2043         int i;
2044         const struct ieee80211_txrx_stypes *mgmt_stypes =
2045                                 rdev->wiphy.mgmt_stypes;
2046         u32 features;
2047
2048         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2049         if (!hdr)
2050                 return -ENOBUFS;
2051
2052         if (WARN_ON(!state))
2053                 return -EINVAL;
2054
2055         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2056             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2057                            wiphy_name(&rdev->wiphy)) ||
2058             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2059                         cfg80211_rdev_list_generation))
2060                 goto nla_put_failure;
2061
2062         if (cmd != NL80211_CMD_NEW_WIPHY)
2063                 goto finish;
2064
2065         switch (state->split_start) {
2066         case 0:
2067                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2068                                rdev->wiphy.retry_short) ||
2069                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2070                                rdev->wiphy.retry_long) ||
2071                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2072                                 rdev->wiphy.frag_threshold) ||
2073                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2074                                 rdev->wiphy.rts_threshold) ||
2075                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2076                                rdev->wiphy.coverage_class) ||
2077                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2078                                rdev->wiphy.max_scan_ssids) ||
2079                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2080                                rdev->wiphy.max_sched_scan_ssids) ||
2081                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2082                                 rdev->wiphy.max_scan_ie_len) ||
2083                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2084                                 rdev->wiphy.max_sched_scan_ie_len) ||
2085                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2086                                rdev->wiphy.max_match_sets) ||
2087                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2088                                 rdev->wiphy.max_sched_scan_plans) ||
2089                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2090                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2091                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2092                                 rdev->wiphy.max_sched_scan_plan_iterations))
2093                         goto nla_put_failure;
2094
2095                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2096                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2097                         goto nla_put_failure;
2098                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2099                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2100                         goto nla_put_failure;
2101                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2102                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2103                         goto nla_put_failure;
2104                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2105                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2106                         goto nla_put_failure;
2107                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2108                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2109                         goto nla_put_failure;
2110                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2111                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2112                         goto nla_put_failure;
2113                 state->split_start++;
2114                 if (state->split)
2115                         break;
2116                 /* fall through */
2117         case 1:
2118                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2119                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2120                             rdev->wiphy.cipher_suites))
2121                         goto nla_put_failure;
2122
2123                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2124                                rdev->wiphy.max_num_pmkids))
2125                         goto nla_put_failure;
2126
2127                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2128                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2129                         goto nla_put_failure;
2130
2131                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2132                                 rdev->wiphy.available_antennas_tx) ||
2133                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2134                                 rdev->wiphy.available_antennas_rx))
2135                         goto nla_put_failure;
2136
2137                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2138                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2139                                 rdev->wiphy.probe_resp_offload))
2140                         goto nla_put_failure;
2141
2142                 if ((rdev->wiphy.available_antennas_tx ||
2143                      rdev->wiphy.available_antennas_rx) &&
2144                     rdev->ops->get_antenna) {
2145                         u32 tx_ant = 0, rx_ant = 0;
2146                         int res;
2147
2148                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2149                         if (!res) {
2150                                 if (nla_put_u32(msg,
2151                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2152                                                 tx_ant) ||
2153                                     nla_put_u32(msg,
2154                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2155                                                 rx_ant))
2156                                         goto nla_put_failure;
2157                         }
2158                 }
2159
2160                 state->split_start++;
2161                 if (state->split)
2162                         break;
2163                 /* fall through */
2164         case 2:
2165                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2166                                         rdev->wiphy.interface_modes))
2167                                 goto nla_put_failure;
2168                 state->split_start++;
2169                 if (state->split)
2170                         break;
2171                 /* fall through */
2172         case 3:
2173                 nl_bands = nla_nest_start_noflag(msg,
2174                                                  NL80211_ATTR_WIPHY_BANDS);
2175                 if (!nl_bands)
2176                         goto nla_put_failure;
2177
2178                 for (band = state->band_start;
2179                      band < NUM_NL80211_BANDS; band++) {
2180                         struct ieee80211_supported_band *sband;
2181
2182                         sband = rdev->wiphy.bands[band];
2183
2184                         if (!sband)
2185                                 continue;
2186
2187                         nl_band = nla_nest_start_noflag(msg, band);
2188                         if (!nl_band)
2189                                 goto nla_put_failure;
2190
2191                         switch (state->chan_start) {
2192                         case 0:
2193                                 if (nl80211_send_band_rateinfo(msg, sband))
2194                                         goto nla_put_failure;
2195                                 state->chan_start++;
2196                                 if (state->split)
2197                                         break;
2198                                 /* fall through */
2199                         default:
2200                                 /* add frequencies */
2201                                 nl_freqs = nla_nest_start_noflag(msg,
2202                                                                  NL80211_BAND_ATTR_FREQS);
2203                                 if (!nl_freqs)
2204                                         goto nla_put_failure;
2205
2206                                 for (i = state->chan_start - 1;
2207                                      i < sband->n_channels;
2208                                      i++) {
2209                                         nl_freq = nla_nest_start_noflag(msg,
2210                                                                         i);
2211                                         if (!nl_freq)
2212                                                 goto nla_put_failure;
2213
2214                                         chan = &sband->channels[i];
2215
2216                                         if (nl80211_msg_put_channel(
2217                                                         msg, &rdev->wiphy, chan,
2218                                                         state->split))
2219                                                 goto nla_put_failure;
2220
2221                                         nla_nest_end(msg, nl_freq);
2222                                         if (state->split)
2223                                                 break;
2224                                 }
2225                                 if (i < sband->n_channels)
2226                                         state->chan_start = i + 2;
2227                                 else
2228                                         state->chan_start = 0;
2229                                 nla_nest_end(msg, nl_freqs);
2230                         }
2231
2232                         nla_nest_end(msg, nl_band);
2233
2234                         if (state->split) {
2235                                 /* start again here */
2236                                 if (state->chan_start)
2237                                         band--;
2238                                 break;
2239                         }
2240                 }
2241                 nla_nest_end(msg, nl_bands);
2242
2243                 if (band < NUM_NL80211_BANDS)
2244                         state->band_start = band + 1;
2245                 else
2246                         state->band_start = 0;
2247
2248                 /* if bands & channels are done, continue outside */
2249                 if (state->band_start == 0 && state->chan_start == 0)
2250                         state->split_start++;
2251                 if (state->split)
2252                         break;
2253                 /* fall through */
2254         case 4:
2255                 nl_cmds = nla_nest_start_noflag(msg,
2256                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2257                 if (!nl_cmds)
2258                         goto nla_put_failure;
2259
2260                 i = nl80211_add_commands_unsplit(rdev, msg);
2261                 if (i < 0)
2262                         goto nla_put_failure;
2263                 if (state->split) {
2264                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2265                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2266                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2267                                 CMD(channel_switch, CHANNEL_SWITCH);
2268                         CMD(set_qos_map, SET_QOS_MAP);
2269                         if (rdev->wiphy.features &
2270                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2271                                 CMD(add_tx_ts, ADD_TX_TS);
2272                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2273                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2274                         CMD(update_ft_ies, UPDATE_FT_IES);
2275                 }
2276 #undef CMD
2277
2278                 nla_nest_end(msg, nl_cmds);
2279                 state->split_start++;
2280                 if (state->split)
2281                         break;
2282                 /* fall through */
2283         case 5:
2284                 if (rdev->ops->remain_on_channel &&
2285                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2286                     nla_put_u32(msg,
2287                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2288                                 rdev->wiphy.max_remain_on_channel_duration))
2289                         goto nla_put_failure;
2290
2291                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2292                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2293                         goto nla_put_failure;
2294
2295                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2296                         goto nla_put_failure;
2297                 state->split_start++;
2298                 if (state->split)
2299                         break;
2300                 /* fall through */
2301         case 6:
2302 #ifdef CONFIG_PM
2303                 if (nl80211_send_wowlan(msg, rdev, state->split))
2304                         goto nla_put_failure;
2305                 state->split_start++;
2306                 if (state->split)
2307                         break;
2308 #else
2309                 state->split_start++;
2310 #endif
2311                 /* fall through */
2312         case 7:
2313                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2314                                         rdev->wiphy.software_iftypes))
2315                         goto nla_put_failure;
2316
2317                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2318                                                    state->split))
2319                         goto nla_put_failure;
2320
2321                 state->split_start++;
2322                 if (state->split)
2323                         break;
2324                 /* fall through */
2325         case 8:
2326                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2327                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2328                                 rdev->wiphy.ap_sme_capa))
2329                         goto nla_put_failure;
2330
2331                 features = rdev->wiphy.features;
2332                 /*
2333                  * We can only add the per-channel limit information if the
2334                  * dump is split, otherwise it makes it too big. Therefore
2335                  * only advertise it in that case.
2336                  */
2337                 if (state->split)
2338                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2339                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2340                         goto nla_put_failure;
2341
2342                 if (rdev->wiphy.ht_capa_mod_mask &&
2343                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2344                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2345                             rdev->wiphy.ht_capa_mod_mask))
2346                         goto nla_put_failure;
2347
2348                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2349                     rdev->wiphy.max_acl_mac_addrs &&
2350                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2351                                 rdev->wiphy.max_acl_mac_addrs))
2352                         goto nla_put_failure;
2353
2354                 /*
2355                  * Any information below this point is only available to
2356                  * applications that can deal with it being split. This
2357                  * helps ensure that newly added capabilities don't break
2358                  * older tools by overrunning their buffers.
2359                  *
2360                  * We still increment split_start so that in the split
2361                  * case we'll continue with more data in the next round,
2362                  * but break unconditionally so unsplit data stops here.
2363                  */
2364                 state->split_start++;
2365                 break;
2366         case 9:
2367                 if (rdev->wiphy.extended_capabilities &&
2368                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2369                              rdev->wiphy.extended_capabilities_len,
2370                              rdev->wiphy.extended_capabilities) ||
2371                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2372                              rdev->wiphy.extended_capabilities_len,
2373                              rdev->wiphy.extended_capabilities_mask)))
2374                         goto nla_put_failure;
2375
2376                 if (rdev->wiphy.vht_capa_mod_mask &&
2377                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2378                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2379                             rdev->wiphy.vht_capa_mod_mask))
2380                         goto nla_put_failure;
2381
2382                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2383                             rdev->wiphy.perm_addr))
2384                         goto nla_put_failure;
2385
2386                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2387                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2388                             rdev->wiphy.addr_mask))
2389                         goto nla_put_failure;
2390
2391                 if (rdev->wiphy.n_addresses > 1) {
2392                         void *attr;
2393
2394                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2395                         if (!attr)
2396                                 goto nla_put_failure;
2397
2398                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2399                                 if (nla_put(msg, i + 1, ETH_ALEN,
2400                                             rdev->wiphy.addresses[i].addr))
2401                                         goto nla_put_failure;
2402
2403                         nla_nest_end(msg, attr);
2404                 }
2405
2406                 state->split_start++;
2407                 break;
2408         case 10:
2409                 if (nl80211_send_coalesce(msg, rdev))
2410                         goto nla_put_failure;
2411
2412                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2413                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2414                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2415                         goto nla_put_failure;
2416
2417                 if (rdev->wiphy.max_ap_assoc_sta &&
2418                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2419                                 rdev->wiphy.max_ap_assoc_sta))
2420                         goto nla_put_failure;
2421
2422                 state->split_start++;
2423                 break;
2424         case 11:
2425                 if (rdev->wiphy.n_vendor_commands) {
2426                         const struct nl80211_vendor_cmd_info *info;
2427                         struct nlattr *nested;
2428
2429                         nested = nla_nest_start_noflag(msg,
2430                                                        NL80211_ATTR_VENDOR_DATA);
2431                         if (!nested)
2432                                 goto nla_put_failure;
2433
2434                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2435                                 info = &rdev->wiphy.vendor_commands[i].info;
2436                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2437                                         goto nla_put_failure;
2438                         }
2439                         nla_nest_end(msg, nested);
2440                 }
2441
2442                 if (rdev->wiphy.n_vendor_events) {
2443                         const struct nl80211_vendor_cmd_info *info;
2444                         struct nlattr *nested;
2445
2446                         nested = nla_nest_start_noflag(msg,
2447                                                        NL80211_ATTR_VENDOR_EVENTS);
2448                         if (!nested)
2449                                 goto nla_put_failure;
2450
2451                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2452                                 info = &rdev->wiphy.vendor_events[i];
2453                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2454                                         goto nla_put_failure;
2455                         }
2456                         nla_nest_end(msg, nested);
2457                 }
2458                 state->split_start++;
2459                 break;
2460         case 12:
2461                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2462                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2463                                rdev->wiphy.max_num_csa_counters))
2464                         goto nla_put_failure;
2465
2466                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2467                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2468                         goto nla_put_failure;
2469
2470                 if (rdev->wiphy.max_sched_scan_reqs &&
2471                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2472                                 rdev->wiphy.max_sched_scan_reqs))
2473                         goto nla_put_failure;
2474
2475                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2476                             sizeof(rdev->wiphy.ext_features),
2477                             rdev->wiphy.ext_features))
2478                         goto nla_put_failure;
2479
2480                 if (rdev->wiphy.bss_select_support) {
2481                         struct nlattr *nested;
2482                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2483
2484                         nested = nla_nest_start_noflag(msg,
2485                                                        NL80211_ATTR_BSS_SELECT);
2486                         if (!nested)
2487                                 goto nla_put_failure;
2488
2489                         i = 0;
2490                         while (bss_select_support) {
2491                                 if ((bss_select_support & 1) &&
2492                                     nla_put_flag(msg, i))
2493                                         goto nla_put_failure;
2494                                 i++;
2495                                 bss_select_support >>= 1;
2496                         }
2497                         nla_nest_end(msg, nested);
2498                 }
2499
2500                 state->split_start++;
2501                 break;
2502         case 13:
2503                 if (rdev->wiphy.num_iftype_ext_capab &&
2504                     rdev->wiphy.iftype_ext_capab) {
2505                         struct nlattr *nested_ext_capab, *nested;
2506
2507                         nested = nla_nest_start_noflag(msg,
2508                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2509                         if (!nested)
2510                                 goto nla_put_failure;
2511
2512                         for (i = state->capa_start;
2513                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2514                                 const struct wiphy_iftype_ext_capab *capab;
2515
2516                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2517
2518                                 nested_ext_capab = nla_nest_start_noflag(msg,
2519                                                                          i);
2520                                 if (!nested_ext_capab ||
2521                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2522                                                 capab->iftype) ||
2523                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2524                                             capab->extended_capabilities_len,
2525                                             capab->extended_capabilities) ||
2526                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2527                                             capab->extended_capabilities_len,
2528                                             capab->extended_capabilities_mask))
2529                                         goto nla_put_failure;
2530
2531                                 nla_nest_end(msg, nested_ext_capab);
2532                                 if (state->split)
2533                                         break;
2534                         }
2535                         nla_nest_end(msg, nested);
2536                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2537                                 state->capa_start = i + 1;
2538                                 break;
2539                         }
2540                 }
2541
2542                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2543                                 rdev->wiphy.nan_supported_bands))
2544                         goto nla_put_failure;
2545
2546                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2547                                             NL80211_EXT_FEATURE_TXQS)) {
2548                         struct cfg80211_txq_stats txqstats = {};
2549                         int res;
2550
2551                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2552                         if (!res &&
2553                             !nl80211_put_txq_stats(msg, &txqstats,
2554                                                    NL80211_ATTR_TXQ_STATS))
2555                                 goto nla_put_failure;
2556
2557                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2558                                         rdev->wiphy.txq_limit))
2559                                 goto nla_put_failure;
2560                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2561                                         rdev->wiphy.txq_memory_limit))
2562                                 goto nla_put_failure;
2563                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2564                                         rdev->wiphy.txq_quantum))
2565                                 goto nla_put_failure;
2566                 }
2567
2568                 state->split_start++;
2569                 break;
2570         case 14:
2571                 if (nl80211_send_pmsr_capa(rdev, msg))
2572                         goto nla_put_failure;
2573
2574                 state->split_start++;
2575                 break;
2576         case 15:
2577                 if (rdev->wiphy.akm_suites &&
2578                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2579                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2580                             rdev->wiphy.akm_suites))
2581                         goto nla_put_failure;
2582
2583                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2584                         goto nla_put_failure;
2585
2586                 if (nl80211_put_tid_config_support(rdev, msg))
2587                         goto nla_put_failure;
2588
2589                 /* done */
2590                 state->split_start = 0;
2591                 break;
2592         }
2593  finish:
2594         genlmsg_end(msg, hdr);
2595         return 0;
2596
2597  nla_put_failure:
2598         genlmsg_cancel(msg, hdr);
2599         return -EMSGSIZE;
2600 }
2601
2602 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2603                                     struct netlink_callback *cb,
2604                                     struct nl80211_dump_wiphy_state *state)
2605 {
2606         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2607         int ret;
2608
2609         if (!tb)
2610                 return -ENOMEM;
2611
2612         ret = nlmsg_parse_deprecated(cb->nlh,
2613                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2614                                      tb, nl80211_fam.maxattr,
2615                                      nl80211_policy, NULL);
2616         /* ignore parse errors for backward compatibility */
2617         if (ret) {
2618                 ret = 0;
2619                 goto out;
2620         }
2621
2622         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2623         if (tb[NL80211_ATTR_WIPHY])
2624                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2625         if (tb[NL80211_ATTR_WDEV])
2626                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2627         if (tb[NL80211_ATTR_IFINDEX]) {
2628                 struct net_device *netdev;
2629                 struct cfg80211_registered_device *rdev;
2630                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2631
2632                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2633                 if (!netdev) {
2634                         ret = -ENODEV;
2635                         goto out;
2636                 }
2637                 if (netdev->ieee80211_ptr) {
2638                         rdev = wiphy_to_rdev(
2639                                 netdev->ieee80211_ptr->wiphy);
2640                         state->filter_wiphy = rdev->wiphy_idx;
2641                 }
2642         }
2643
2644         ret = 0;
2645 out:
2646         kfree(tb);
2647         return ret;
2648 }
2649
2650 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2651 {
2652         int idx = 0, ret;
2653         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2654         struct cfg80211_registered_device *rdev;
2655
2656         rtnl_lock();
2657         if (!state) {
2658                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2659                 if (!state) {
2660                         rtnl_unlock();
2661                         return -ENOMEM;
2662                 }
2663                 state->filter_wiphy = -1;
2664                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2665                 if (ret) {
2666                         kfree(state);
2667                         rtnl_unlock();
2668                         return ret;
2669                 }
2670                 cb->args[0] = (long)state;
2671         }
2672
2673         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2674                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2675                         continue;
2676                 if (++idx <= state->start)
2677                         continue;
2678                 if (state->filter_wiphy != -1 &&
2679                     state->filter_wiphy != rdev->wiphy_idx)
2680                         continue;
2681                 /* attempt to fit multiple wiphy data chunks into the skb */
2682                 do {
2683                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2684                                                  skb,
2685                                                  NETLINK_CB(cb->skb).portid,
2686                                                  cb->nlh->nlmsg_seq,
2687                                                  NLM_F_MULTI, state);
2688                         if (ret < 0) {
2689                                 /*
2690                                  * If sending the wiphy data didn't fit (ENOBUFS
2691                                  * or EMSGSIZE returned), this SKB is still
2692                                  * empty (so it's not too big because another
2693                                  * wiphy dataset is already in the skb) and
2694                                  * we've not tried to adjust the dump allocation
2695                                  * yet ... then adjust the alloc size to be
2696                                  * bigger, and return 1 but with the empty skb.
2697                                  * This results in an empty message being RX'ed
2698                                  * in userspace, but that is ignored.
2699                                  *
2700                                  * We can then retry with the larger buffer.
2701                                  */
2702                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2703                                     !skb->len && !state->split &&
2704                                     cb->min_dump_alloc < 4096) {
2705                                         cb->min_dump_alloc = 4096;
2706                                         state->split_start = 0;
2707                                         rtnl_unlock();
2708                                         return 1;
2709                                 }
2710                                 idx--;
2711                                 break;
2712                         }
2713                 } while (state->split_start > 0);
2714                 break;
2715         }
2716         rtnl_unlock();
2717
2718         state->start = idx;
2719
2720         return skb->len;
2721 }
2722
2723 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2724 {
2725         kfree((void *)cb->args[0]);
2726         return 0;
2727 }
2728
2729 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2730 {
2731         struct sk_buff *msg;
2732         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2733         struct nl80211_dump_wiphy_state state = {};
2734
2735         msg = nlmsg_new(4096, GFP_KERNEL);
2736         if (!msg)
2737                 return -ENOMEM;
2738
2739         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2740                                info->snd_portid, info->snd_seq, 0,
2741                                &state) < 0) {
2742                 nlmsg_free(msg);
2743                 return -ENOBUFS;
2744         }
2745
2746         return genlmsg_reply(msg, info);
2747 }
2748
2749 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2750         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2751         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2752         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2753         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2754         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2755 };
2756
2757 static int parse_txq_params(struct nlattr *tb[],
2758                             struct ieee80211_txq_params *txq_params)
2759 {
2760         u8 ac;
2761
2762         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2763             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2764             !tb[NL80211_TXQ_ATTR_AIFS])
2765                 return -EINVAL;
2766
2767         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2768         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2769         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2770         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2771         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2772
2773         if (ac >= NL80211_NUM_ACS)
2774                 return -EINVAL;
2775         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2776         return 0;
2777 }
2778
2779 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2780 {
2781         /*
2782          * You can only set the channel explicitly for WDS interfaces,
2783          * all others have their channel managed via their respective
2784          * "establish a connection" command (connect, join, ...)
2785          *
2786          * For AP/GO and mesh mode, the channel can be set with the
2787          * channel userspace API, but is only stored and passed to the
2788          * low-level driver when the AP starts or the mesh is joined.
2789          * This is for backward compatibility, userspace can also give
2790          * the channel in the start-ap or join-mesh commands instead.
2791          *
2792          * Monitors are special as they are normally slaved to
2793          * whatever else is going on, so they have their own special
2794          * operation to set the monitor channel if possible.
2795          */
2796         return !wdev ||
2797                 wdev->iftype == NL80211_IFTYPE_AP ||
2798                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2799                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2800                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2801 }
2802
2803 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2804                           struct genl_info *info,
2805                           struct cfg80211_chan_def *chandef)
2806 {
2807         struct netlink_ext_ack *extack = info->extack;
2808         struct nlattr **attrs = info->attrs;
2809         u32 control_freq;
2810
2811         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2812                 return -EINVAL;
2813
2814         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2815
2816         memset(chandef, 0, sizeof(*chandef));
2817
2818         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2819         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2820         chandef->center_freq1 = control_freq;
2821         chandef->center_freq2 = 0;
2822
2823         /* Primary channel not allowed */
2824         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2825                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2826                                     "Channel is disabled");
2827                 return -EINVAL;
2828         }
2829
2830         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2831                 enum nl80211_channel_type chantype;
2832
2833                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2834
2835                 switch (chantype) {
2836                 case NL80211_CHAN_NO_HT:
2837                 case NL80211_CHAN_HT20:
2838                 case NL80211_CHAN_HT40PLUS:
2839                 case NL80211_CHAN_HT40MINUS:
2840                         cfg80211_chandef_create(chandef, chandef->chan,
2841                                                 chantype);
2842                         /* user input for center_freq is incorrect */
2843                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2844                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2845                                 NL_SET_ERR_MSG_ATTR(extack,
2846                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2847                                                     "bad center frequency 1");
2848                                 return -EINVAL;
2849                         }
2850                         /* center_freq2 must be zero */
2851                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2852                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2853                                 NL_SET_ERR_MSG_ATTR(extack,
2854                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2855                                                     "center frequency 2 can't be used");
2856                                 return -EINVAL;
2857                         }
2858                         break;
2859                 default:
2860                         NL_SET_ERR_MSG_ATTR(extack,
2861                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2862                                             "invalid channel type");
2863                         return -EINVAL;
2864                 }
2865         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2866                 chandef->width =
2867                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2868                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2869                         chandef->center_freq1 =
2870                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2871                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2872                         chandef->center_freq2 =
2873                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2874         }
2875
2876         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2877                 chandef->edmg.channels =
2878                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2879
2880                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2881                         chandef->edmg.bw_config =
2882                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2883         } else {
2884                 chandef->edmg.bw_config = 0;
2885                 chandef->edmg.channels = 0;
2886         }
2887
2888         if (!cfg80211_chandef_valid(chandef)) {
2889                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2890                 return -EINVAL;
2891         }
2892
2893         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2894                                      IEEE80211_CHAN_DISABLED)) {
2895                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2896                 return -EINVAL;
2897         }
2898
2899         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2900              chandef->width == NL80211_CHAN_WIDTH_10) &&
2901             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2902                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2903                 return -EINVAL;
2904         }
2905
2906         return 0;
2907 }
2908
2909 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2910                                  struct net_device *dev,
2911                                  struct genl_info *info)
2912 {
2913         struct cfg80211_chan_def chandef;
2914         int result;
2915         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2916         struct wireless_dev *wdev = NULL;
2917
2918         if (dev)
2919                 wdev = dev->ieee80211_ptr;
2920         if (!nl80211_can_set_dev_channel(wdev))
2921                 return -EOPNOTSUPP;
2922         if (wdev)
2923                 iftype = wdev->iftype;
2924
2925         result = nl80211_parse_chandef(rdev, info, &chandef);
2926         if (result)
2927                 return result;
2928
2929         switch (iftype) {
2930         case NL80211_IFTYPE_AP:
2931         case NL80211_IFTYPE_P2P_GO:
2932                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2933                                                    iftype)) {
2934                         result = -EINVAL;
2935                         break;
2936                 }
2937                 if (wdev->beacon_interval) {
2938                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2939                             !(rdev->wiphy.features &
2940                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2941                                 result = -EBUSY;
2942                                 break;
2943                         }
2944
2945                         /* Only allow dynamic channel width changes */
2946                         if (chandef.chan != wdev->preset_chandef.chan) {
2947                                 result = -EBUSY;
2948                                 break;
2949                         }
2950                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2951                         if (result)
2952                                 break;
2953                 }
2954                 wdev->preset_chandef = chandef;
2955                 result = 0;
2956                 break;
2957         case NL80211_IFTYPE_MESH_POINT:
2958                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2959                 break;
2960         case NL80211_IFTYPE_MONITOR:
2961                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2962                 break;
2963         default:
2964                 result = -EINVAL;
2965         }
2966
2967         return result;
2968 }
2969
2970 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2971 {
2972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2973         struct net_device *netdev = info->user_ptr[1];
2974
2975         return __nl80211_set_channel(rdev, netdev, info);
2976 }
2977
2978 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2979 {
2980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2981         struct net_device *dev = info->user_ptr[1];
2982         struct wireless_dev *wdev = dev->ieee80211_ptr;
2983         const u8 *bssid;
2984
2985         if (!info->attrs[NL80211_ATTR_MAC])
2986                 return -EINVAL;
2987
2988         if (netif_running(dev))
2989                 return -EBUSY;
2990
2991         if (!rdev->ops->set_wds_peer)
2992                 return -EOPNOTSUPP;
2993
2994         if (wdev->iftype != NL80211_IFTYPE_WDS)
2995                 return -EOPNOTSUPP;
2996
2997         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2998         return rdev_set_wds_peer(rdev, dev, bssid);
2999 }
3000
3001 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3002 {
3003         struct cfg80211_registered_device *rdev;
3004         struct net_device *netdev = NULL;
3005         struct wireless_dev *wdev;
3006         int result = 0, rem_txq_params = 0;
3007         struct nlattr *nl_txq_params;
3008         u32 changed;
3009         u8 retry_short = 0, retry_long = 0;
3010         u32 frag_threshold = 0, rts_threshold = 0;
3011         u8 coverage_class = 0;
3012         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3013
3014         ASSERT_RTNL();
3015
3016         /*
3017          * Try to find the wiphy and netdev. Normally this
3018          * function shouldn't need the netdev, but this is
3019          * done for backward compatibility -- previously
3020          * setting the channel was done per wiphy, but now
3021          * it is per netdev. Previous userland like hostapd
3022          * also passed a netdev to set_wiphy, so that it is
3023          * possible to let that go to the right netdev!
3024          */
3025
3026         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3027                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3028
3029                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3030                 if (netdev && netdev->ieee80211_ptr)
3031                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3032                 else
3033                         netdev = NULL;
3034         }
3035
3036         if (!netdev) {
3037                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3038                                                   info->attrs);
3039                 if (IS_ERR(rdev))
3040                         return PTR_ERR(rdev);
3041                 wdev = NULL;
3042                 netdev = NULL;
3043                 result = 0;
3044         } else
3045                 wdev = netdev->ieee80211_ptr;
3046
3047         /*
3048          * end workaround code, by now the rdev is available
3049          * and locked, and wdev may or may not be NULL.
3050          */
3051
3052         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3053                 result = cfg80211_dev_rename(
3054                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3055
3056         if (result)
3057                 return result;
3058
3059         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3060                 struct ieee80211_txq_params txq_params;
3061                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3062
3063                 if (!rdev->ops->set_txq_params)
3064                         return -EOPNOTSUPP;
3065
3066                 if (!netdev)
3067                         return -EINVAL;
3068
3069                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3070                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3071                         return -EINVAL;
3072
3073                 if (!netif_running(netdev))
3074                         return -ENETDOWN;
3075
3076                 nla_for_each_nested(nl_txq_params,
3077                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3078                                     rem_txq_params) {
3079                         result = nla_parse_nested_deprecated(tb,
3080                                                              NL80211_TXQ_ATTR_MAX,
3081                                                              nl_txq_params,
3082                                                              txq_params_policy,
3083                                                              info->extack);
3084                         if (result)
3085                                 return result;
3086                         result = parse_txq_params(tb, &txq_params);
3087                         if (result)
3088                                 return result;
3089
3090                         result = rdev_set_txq_params(rdev, netdev,
3091                                                      &txq_params);
3092                         if (result)
3093                                 return result;
3094                 }
3095         }
3096
3097         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3098                 result = __nl80211_set_channel(
3099                         rdev,
3100                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3101                         info);
3102                 if (result)
3103                         return result;
3104         }
3105
3106         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3107                 struct wireless_dev *txp_wdev = wdev;
3108                 enum nl80211_tx_power_setting type;
3109                 int idx, mbm = 0;
3110
3111                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3112                         txp_wdev = NULL;
3113
3114                 if (!rdev->ops->set_tx_power)
3115                         return -EOPNOTSUPP;
3116
3117                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3118                 type = nla_get_u32(info->attrs[idx]);
3119
3120                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3121                     (type != NL80211_TX_POWER_AUTOMATIC))
3122                         return -EINVAL;
3123
3124                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3125                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3126                         mbm = nla_get_u32(info->attrs[idx]);
3127                 }
3128
3129                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3130                 if (result)
3131                         return result;
3132         }
3133
3134         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3135             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3136                 u32 tx_ant, rx_ant;
3137
3138                 if ((!rdev->wiphy.available_antennas_tx &&
3139                      !rdev->wiphy.available_antennas_rx) ||
3140                     !rdev->ops->set_antenna)
3141                         return -EOPNOTSUPP;
3142
3143                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3144                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3145
3146                 /* reject antenna configurations which don't match the
3147                  * available antenna masks, except for the "all" mask */
3148                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3149                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3150                         return -EINVAL;
3151
3152                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3153                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3154
3155                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3156                 if (result)
3157                         return result;
3158         }
3159
3160         changed = 0;
3161
3162         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3163                 retry_short = nla_get_u8(
3164                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3165
3166                 changed |= WIPHY_PARAM_RETRY_SHORT;
3167         }
3168
3169         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3170                 retry_long = nla_get_u8(
3171                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3172
3173                 changed |= WIPHY_PARAM_RETRY_LONG;
3174         }
3175
3176         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3177                 frag_threshold = nla_get_u32(
3178                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3179                 if (frag_threshold < 256)
3180                         return -EINVAL;
3181
3182                 if (frag_threshold != (u32) -1) {
3183                         /*
3184                          * Fragments (apart from the last one) are required to
3185                          * have even length. Make the fragmentation code
3186                          * simpler by stripping LSB should someone try to use
3187                          * odd threshold value.
3188                          */
3189                         frag_threshold &= ~0x1;
3190                 }
3191                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3192         }
3193
3194         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3195                 rts_threshold = nla_get_u32(
3196                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3197                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3198         }
3199
3200         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3201                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3202                         return -EINVAL;
3203
3204                 coverage_class = nla_get_u8(
3205                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3206                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3207         }
3208
3209         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3210                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3211                         return -EOPNOTSUPP;
3212
3213                 changed |= WIPHY_PARAM_DYN_ACK;
3214         }
3215
3216         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3217                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3218                                              NL80211_EXT_FEATURE_TXQS))
3219                         return -EOPNOTSUPP;
3220                 txq_limit = nla_get_u32(
3221                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3222                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3223         }
3224
3225         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3226                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3227                                              NL80211_EXT_FEATURE_TXQS))
3228                         return -EOPNOTSUPP;
3229                 txq_memory_limit = nla_get_u32(
3230                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3231                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3232         }
3233
3234         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3235                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3236                                              NL80211_EXT_FEATURE_TXQS))
3237                         return -EOPNOTSUPP;
3238                 txq_quantum = nla_get_u32(
3239                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3240                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3241         }
3242
3243         if (changed) {
3244                 u8 old_retry_short, old_retry_long;
3245                 u32 old_frag_threshold, old_rts_threshold;
3246                 u8 old_coverage_class;
3247                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3248
3249                 if (!rdev->ops->set_wiphy_params)
3250                         return -EOPNOTSUPP;
3251
3252                 old_retry_short = rdev->wiphy.retry_short;
3253                 old_retry_long = rdev->wiphy.retry_long;
3254                 old_frag_threshold = rdev->wiphy.frag_threshold;
3255                 old_rts_threshold = rdev->wiphy.rts_threshold;
3256                 old_coverage_class = rdev->wiphy.coverage_class;
3257                 old_txq_limit = rdev->wiphy.txq_limit;
3258                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3259                 old_txq_quantum = rdev->wiphy.txq_quantum;
3260
3261                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3262                         rdev->wiphy.retry_short = retry_short;
3263                 if (changed & WIPHY_PARAM_RETRY_LONG)
3264                         rdev->wiphy.retry_long = retry_long;
3265                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3266                         rdev->wiphy.frag_threshold = frag_threshold;
3267                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3268                         rdev->wiphy.rts_threshold = rts_threshold;
3269                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3270                         rdev->wiphy.coverage_class = coverage_class;
3271                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3272                         rdev->wiphy.txq_limit = txq_limit;
3273                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3274                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3275                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3276                         rdev->wiphy.txq_quantum = txq_quantum;
3277
3278                 result = rdev_set_wiphy_params(rdev, changed);
3279                 if (result) {
3280                         rdev->wiphy.retry_short = old_retry_short;
3281                         rdev->wiphy.retry_long = old_retry_long;
3282                         rdev->wiphy.frag_threshold = old_frag_threshold;
3283                         rdev->wiphy.rts_threshold = old_rts_threshold;
3284                         rdev->wiphy.coverage_class = old_coverage_class;
3285                         rdev->wiphy.txq_limit = old_txq_limit;
3286                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3287                         rdev->wiphy.txq_quantum = old_txq_quantum;
3288                         return result;
3289                 }
3290         }
3291         return 0;
3292 }
3293
3294 static int nl80211_send_chandef(struct sk_buff *msg,
3295                                 const struct cfg80211_chan_def *chandef)
3296 {
3297         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3298                 return -EINVAL;
3299
3300         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3301                         chandef->chan->center_freq))
3302                 return -ENOBUFS;
3303         switch (chandef->width) {
3304         case NL80211_CHAN_WIDTH_20_NOHT:
3305         case NL80211_CHAN_WIDTH_20:
3306         case NL80211_CHAN_WIDTH_40:
3307                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3308                                 cfg80211_get_chandef_type(chandef)))
3309                         return -ENOBUFS;
3310                 break;
3311         default:
3312                 break;
3313         }
3314         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3315                 return -ENOBUFS;
3316         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3317                 return -ENOBUFS;
3318         if (chandef->center_freq2 &&
3319             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3320                 return -ENOBUFS;
3321         return 0;
3322 }
3323
3324 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3325                               struct cfg80211_registered_device *rdev,
3326                               struct wireless_dev *wdev,
3327                               enum nl80211_commands cmd)
3328 {
3329         struct net_device *dev = wdev->netdev;
3330         void *hdr;
3331
3332         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3333                 cmd != NL80211_CMD_DEL_INTERFACE &&
3334                 cmd != NL80211_CMD_SET_INTERFACE);
3335
3336         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3337         if (!hdr)
3338                 return -1;
3339
3340         if (dev &&
3341             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3342              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3343                 goto nla_put_failure;
3344
3345         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3346             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3347             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3348                               NL80211_ATTR_PAD) ||
3349             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3350             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3351                         rdev->devlist_generation ^
3352                         (cfg80211_rdev_list_generation << 2)) ||
3353             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3354                 goto nla_put_failure;
3355
3356         if (rdev->ops->get_channel) {
3357                 int ret;
3358                 struct cfg80211_chan_def chandef = {};
3359
3360                 ret = rdev_get_channel(rdev, wdev, &chandef);
3361                 if (ret == 0) {
3362                         if (nl80211_send_chandef(msg, &chandef))
3363                                 goto nla_put_failure;
3364                 }
3365         }
3366
3367         if (rdev->ops->get_tx_power) {
3368                 int dbm, ret;
3369
3370                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3371                 if (ret == 0 &&
3372                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3373                                 DBM_TO_MBM(dbm)))
3374                         goto nla_put_failure;
3375         }
3376
3377         wdev_lock(wdev);
3378         switch (wdev->iftype) {
3379         case NL80211_IFTYPE_AP:
3380                 if (wdev->ssid_len &&
3381                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3382                         goto nla_put_failure_locked;
3383                 break;
3384         case NL80211_IFTYPE_STATION:
3385         case NL80211_IFTYPE_P2P_CLIENT:
3386         case NL80211_IFTYPE_ADHOC: {
3387                 const u8 *ssid_ie;
3388                 if (!wdev->current_bss)
3389                         break;
3390                 rcu_read_lock();
3391                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3392                                                WLAN_EID_SSID);
3393                 if (ssid_ie &&
3394                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3395                         goto nla_put_failure_rcu_locked;
3396                 rcu_read_unlock();
3397                 break;
3398                 }
3399         default:
3400                 /* nothing */
3401                 break;
3402         }
3403         wdev_unlock(wdev);
3404
3405         if (rdev->ops->get_txq_stats) {
3406                 struct cfg80211_txq_stats txqstats = {};
3407                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3408
3409                 if (ret == 0 &&
3410                     !nl80211_put_txq_stats(msg, &txqstats,
3411                                            NL80211_ATTR_TXQ_STATS))
3412                         goto nla_put_failure;
3413         }
3414
3415         genlmsg_end(msg, hdr);
3416         return 0;
3417
3418  nla_put_failure_rcu_locked:
3419         rcu_read_unlock();
3420  nla_put_failure_locked:
3421         wdev_unlock(wdev);
3422  nla_put_failure:
3423         genlmsg_cancel(msg, hdr);
3424         return -EMSGSIZE;
3425 }
3426
3427 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3428 {
3429         int wp_idx = 0;
3430         int if_idx = 0;
3431         int wp_start = cb->args[0];
3432         int if_start = cb->args[1];
3433         int filter_wiphy = -1;
3434         struct cfg80211_registered_device *rdev;
3435         struct wireless_dev *wdev;
3436         int ret;
3437
3438         rtnl_lock();
3439         if (!cb->args[2]) {
3440                 struct nl80211_dump_wiphy_state state = {
3441                         .filter_wiphy = -1,
3442                 };
3443
3444                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3445                 if (ret)
3446                         goto out_unlock;
3447
3448                 filter_wiphy = state.filter_wiphy;
3449
3450                 /*
3451                  * if filtering, set cb->args[2] to +1 since 0 is the default
3452                  * value needed to determine that parsing is necessary.
3453                  */
3454                 if (filter_wiphy >= 0)
3455                         cb->args[2] = filter_wiphy + 1;
3456                 else
3457                         cb->args[2] = -1;
3458         } else if (cb->args[2] > 0) {
3459                 filter_wiphy = cb->args[2] - 1;
3460         }
3461
3462         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3463                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3464                         continue;
3465                 if (wp_idx < wp_start) {
3466                         wp_idx++;
3467                         continue;
3468                 }
3469
3470                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3471                         continue;
3472
3473                 if_idx = 0;
3474
3475                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3476                         if (if_idx < if_start) {
3477                                 if_idx++;
3478                                 continue;
3479                         }
3480                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3481                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3482                                                rdev, wdev,
3483                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3484                                 goto out;
3485                         }
3486                         if_idx++;
3487                 }
3488
3489                 wp_idx++;
3490         }
3491  out:
3492         cb->args[0] = wp_idx;
3493         cb->args[1] = if_idx;
3494
3495         ret = skb->len;
3496  out_unlock:
3497         rtnl_unlock();
3498
3499         return ret;
3500 }
3501
3502 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3503 {
3504         struct sk_buff *msg;
3505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3506         struct wireless_dev *wdev = info->user_ptr[1];
3507
3508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3509         if (!msg)
3510                 return -ENOMEM;
3511
3512         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3513                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3514                 nlmsg_free(msg);
3515                 return -ENOBUFS;
3516         }
3517
3518         return genlmsg_reply(msg, info);
3519 }
3520
3521 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3522         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3523         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3524         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3525         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3526         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3527         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3528 };
3529
3530 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3531 {
3532         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3533         int flag;
3534
3535         *mntrflags = 0;
3536
3537         if (!nla)
3538                 return -EINVAL;
3539
3540         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3541                 return -EINVAL;
3542
3543         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3544                 if (flags[flag])
3545                         *mntrflags |= (1<<flag);
3546
3547         *mntrflags |= MONITOR_FLAG_CHANGED;
3548
3549         return 0;
3550 }
3551
3552 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3553                                      enum nl80211_iftype type,
3554                                      struct genl_info *info,
3555                                      struct vif_params *params)
3556 {
3557         bool change = false;
3558         int err;
3559
3560         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3561                 if (type != NL80211_IFTYPE_MONITOR)
3562                         return -EINVAL;
3563
3564                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3565                                           &params->flags);
3566                 if (err)
3567                         return err;
3568
3569                 change = true;
3570         }
3571
3572         if (params->flags & MONITOR_FLAG_ACTIVE &&
3573             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3574                 return -EOPNOTSUPP;
3575
3576         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3577                 const u8 *mumimo_groups;
3578                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3579
3580                 if (type != NL80211_IFTYPE_MONITOR)
3581                         return -EINVAL;
3582
3583                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3584                         return -EOPNOTSUPP;
3585
3586                 mumimo_groups =
3587                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3588
3589                 /* bits 0 and 63 are reserved and must be zero */
3590                 if ((mumimo_groups[0] & BIT(0)) ||
3591                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3592                         return -EINVAL;
3593
3594                 params->vht_mumimo_groups = mumimo_groups;
3595                 change = true;
3596         }
3597
3598         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3599                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3600
3601                 if (type != NL80211_IFTYPE_MONITOR)
3602                         return -EINVAL;
3603
3604                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3605                         return -EOPNOTSUPP;
3606
3607                 params->vht_mumimo_follow_addr =
3608                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3609                 change = true;
3610         }
3611
3612         return change ? 1 : 0;
3613 }
3614
3615 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3616                                struct net_device *netdev, u8 use_4addr,
3617                                enum nl80211_iftype iftype)
3618 {
3619         if (!use_4addr) {
3620                 if (netdev && netif_is_bridge_port(netdev))
3621                         return -EBUSY;
3622                 return 0;
3623         }
3624
3625         switch (iftype) {
3626         case NL80211_IFTYPE_AP_VLAN:
3627                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3628                         return 0;
3629                 break;
3630         case NL80211_IFTYPE_STATION:
3631                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3632                         return 0;
3633                 break;
3634         default:
3635                 break;
3636         }
3637
3638         return -EOPNOTSUPP;
3639 }
3640
3641 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3642 {
3643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3644         struct vif_params params;
3645         int err;
3646         enum nl80211_iftype otype, ntype;
3647         struct net_device *dev = info->user_ptr[1];
3648         bool change = false;
3649
3650         memset(&params, 0, sizeof(params));
3651
3652         otype = ntype = dev->ieee80211_ptr->iftype;
3653
3654         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3655                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3656                 if (otype != ntype)
3657                         change = true;
3658         }
3659
3660         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3661                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3662
3663                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3664                         return -EINVAL;
3665                 if (netif_running(dev))
3666                         return -EBUSY;
3667
3668                 wdev_lock(wdev);
3669                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3670                              IEEE80211_MAX_MESH_ID_LEN);
3671                 wdev->mesh_id_up_len =
3672                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3673                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3674                        wdev->mesh_id_up_len);
3675                 wdev_unlock(wdev);
3676         }
3677
3678         if (info->attrs[NL80211_ATTR_4ADDR]) {
3679                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3680                 change = true;
3681                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3682                 if (err)
3683                         return err;
3684         } else {
3685                 params.use_4addr = -1;
3686         }
3687
3688         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3689         if (err < 0)
3690                 return err;
3691         if (err > 0)
3692                 change = true;
3693
3694         if (change)
3695                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3696         else
3697                 err = 0;
3698
3699         if (!err && params.use_4addr != -1)
3700                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3701
3702         if (change && !err) {
3703                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3704
3705                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3706         }
3707
3708         return err;
3709 }
3710
3711 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3712 {
3713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3714         struct vif_params params;
3715         struct wireless_dev *wdev;
3716         struct sk_buff *msg;
3717         int err;
3718         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3719
3720         /* to avoid failing a new interface creation due to pending removal */
3721         cfg80211_destroy_ifaces(rdev);
3722
3723         memset(&params, 0, sizeof(params));
3724
3725         if (!info->attrs[NL80211_ATTR_IFNAME])
3726                 return -EINVAL;
3727
3728         if (info->attrs[NL80211_ATTR_IFTYPE])
3729                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3730
3731         if (!rdev->ops->add_virtual_intf)
3732                 return -EOPNOTSUPP;
3733
3734         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3735              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3736             info->attrs[NL80211_ATTR_MAC]) {
3737                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3738                            ETH_ALEN);
3739                 if (!is_valid_ether_addr(params.macaddr))
3740                         return -EADDRNOTAVAIL;
3741         }
3742
3743         if (info->attrs[NL80211_ATTR_4ADDR]) {
3744                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3745                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3746                 if (err)
3747                         return err;
3748         }
3749
3750         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3751                 return -EOPNOTSUPP;
3752
3753         err = nl80211_parse_mon_options(rdev, type, info, &params);
3754         if (err < 0)
3755                 return err;
3756
3757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3758         if (!msg)
3759                 return -ENOMEM;
3760
3761         wdev = rdev_add_virtual_intf(rdev,
3762                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3763                                 NET_NAME_USER, type, &params);
3764         if (WARN_ON(!wdev)) {
3765                 nlmsg_free(msg);
3766                 return -EPROTO;
3767         } else if (IS_ERR(wdev)) {
3768                 nlmsg_free(msg);
3769                 return PTR_ERR(wdev);
3770         }
3771
3772         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3773                 wdev->owner_nlportid = info->snd_portid;
3774
3775         switch (type) {
3776         case NL80211_IFTYPE_MESH_POINT:
3777                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3778                         break;
3779                 wdev_lock(wdev);
3780                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3781                              IEEE80211_MAX_MESH_ID_LEN);
3782                 wdev->mesh_id_up_len =
3783                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3784                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3785                        wdev->mesh_id_up_len);
3786                 wdev_unlock(wdev);
3787                 break;
3788         case NL80211_IFTYPE_NAN:
3789         case NL80211_IFTYPE_P2P_DEVICE:
3790                 /*
3791                  * P2P Device and NAN do not have a netdev, so don't go
3792                  * through the netdev notifier and must be added here
3793                  */
3794                 cfg80211_init_wdev(rdev, wdev);
3795                 break;
3796         default:
3797                 break;
3798         }
3799
3800         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3801                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3802                 nlmsg_free(msg);
3803                 return -ENOBUFS;
3804         }
3805
3806         return genlmsg_reply(msg, info);
3807 }
3808
3809 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3810 {
3811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3812         struct wireless_dev *wdev = info->user_ptr[1];
3813
3814         if (!rdev->ops->del_virtual_intf)
3815                 return -EOPNOTSUPP;
3816
3817         /*
3818          * If we remove a wireless device without a netdev then clear
3819          * user_ptr[1] so that nl80211_post_doit won't dereference it
3820          * to check if it needs to do dev_put(). Otherwise it crashes
3821          * since the wdev has been freed, unlike with a netdev where
3822          * we need the dev_put() for the netdev to really be freed.
3823          */
3824         if (!wdev->netdev)
3825                 info->user_ptr[1] = NULL;
3826
3827         return rdev_del_virtual_intf(rdev, wdev);
3828 }
3829
3830 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3831 {
3832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3833         struct net_device *dev = info->user_ptr[1];
3834         u16 noack_map;
3835
3836         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3837                 return -EINVAL;
3838
3839         if (!rdev->ops->set_noack_map)
3840                 return -EOPNOTSUPP;
3841
3842         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3843
3844         return rdev_set_noack_map(rdev, dev, noack_map);
3845 }
3846
3847 struct get_key_cookie {
3848         struct sk_buff *msg;
3849         int error;
3850         int idx;
3851 };
3852
3853 static void get_key_callback(void *c, struct key_params *params)
3854 {
3855         struct nlattr *key;
3856         struct get_key_cookie *cookie = c;
3857
3858         if ((params->key &&
3859              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3860                      params->key_len, params->key)) ||
3861             (params->seq &&
3862              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3863                      params->seq_len, params->seq)) ||
3864             (params->cipher &&
3865              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3866                          params->cipher)))
3867                 goto nla_put_failure;
3868
3869         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3870         if (!key)
3871                 goto nla_put_failure;
3872
3873         if ((params->key &&
3874              nla_put(cookie->msg, NL80211_KEY_DATA,
3875                      params->key_len, params->key)) ||
3876             (params->seq &&
3877              nla_put(cookie->msg, NL80211_KEY_SEQ,
3878                      params->seq_len, params->seq)) ||
3879             (params->cipher &&
3880              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3881                          params->cipher)))
3882                 goto nla_put_failure;
3883
3884         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3885                 goto nla_put_failure;
3886
3887         nla_nest_end(cookie->msg, key);
3888
3889         return;
3890  nla_put_failure:
3891         cookie->error = 1;
3892 }
3893
3894 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3895 {
3896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3897         int err;
3898         struct net_device *dev = info->user_ptr[1];
3899         u8 key_idx = 0;
3900         const u8 *mac_addr = NULL;
3901         bool pairwise;
3902         struct get_key_cookie cookie = {
3903                 .error = 0,
3904         };
3905         void *hdr;
3906         struct sk_buff *msg;
3907
3908         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3909                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3910                 if (key_idx > 5 &&
3911                     !wiphy_ext_feature_isset(
3912                             &rdev->wiphy,
3913                             NL80211_EXT_FEATURE_BEACON_PROTECTION))
3914                         return -EINVAL;
3915         }
3916
3917         if (info->attrs[NL80211_ATTR_MAC])
3918                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3919
3920         pairwise = !!mac_addr;
3921         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3922                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3923
3924                 if (kt != NL80211_KEYTYPE_GROUP &&
3925                     kt != NL80211_KEYTYPE_PAIRWISE)
3926                         return -EINVAL;
3927                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3928         }
3929
3930         if (!rdev->ops->get_key)
3931                 return -EOPNOTSUPP;
3932
3933         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3934                 return -ENOENT;
3935
3936         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3937         if (!msg)
3938                 return -ENOMEM;
3939
3940         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3941                              NL80211_CMD_NEW_KEY);
3942         if (!hdr)
3943                 goto nla_put_failure;
3944
3945         cookie.msg = msg;
3946         cookie.idx = key_idx;
3947
3948         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3949             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3950                 goto nla_put_failure;
3951         if (mac_addr &&
3952             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3953                 goto nla_put_failure;
3954
3955         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3956                            get_key_callback);
3957
3958         if (err)
3959                 goto free_msg;
3960
3961         if (cookie.error)
3962                 goto nla_put_failure;
3963
3964         genlmsg_end(msg, hdr);
3965         return genlmsg_reply(msg, info);
3966
3967  nla_put_failure:
3968         err = -ENOBUFS;
3969  free_msg:
3970         nlmsg_free(msg);
3971         return err;
3972 }
3973
3974 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3975 {
3976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3977         struct key_parse key;
3978         int err;
3979         struct net_device *dev = info->user_ptr[1];
3980
3981         err = nl80211_parse_key(info, &key);
3982         if (err)
3983                 return err;
3984
3985         if (key.idx < 0)
3986                 return -EINVAL;
3987
3988         /* Only support setting default key and
3989          * Extended Key ID action NL80211_KEY_SET_TX.
3990          */
3991         if (!key.def && !key.defmgmt && !key.defbeacon &&
3992             !(key.p.mode == NL80211_KEY_SET_TX))
3993                 return -EINVAL;
3994
3995         wdev_lock(dev->ieee80211_ptr);
3996
3997         if (key.def) {
3998                 if (!rdev->ops->set_default_key) {
3999                         err = -EOPNOTSUPP;
4000                         goto out;
4001                 }
4002
4003                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4004                 if (err)
4005                         goto out;
4006
4007                 err = rdev_set_default_key(rdev, dev, key.idx,
4008                                                  key.def_uni, key.def_multi);
4009
4010                 if (err)
4011                         goto out;
4012
4013 #ifdef CONFIG_CFG80211_WEXT
4014                 dev->ieee80211_ptr->wext.default_key = key.idx;
4015 #endif
4016         } else if (key.defmgmt) {
4017                 if (key.def_uni || !key.def_multi) {
4018                         err = -EINVAL;
4019                         goto out;
4020                 }
4021
4022                 if (!rdev->ops->set_default_mgmt_key) {
4023                         err = -EOPNOTSUPP;
4024                         goto out;
4025                 }
4026
4027                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4028                 if (err)
4029                         goto out;
4030
4031                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4032                 if (err)
4033                         goto out;
4034
4035 #ifdef CONFIG_CFG80211_WEXT
4036                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4037 #endif
4038         } else if (key.defbeacon) {
4039                 if (key.def_uni || !key.def_multi) {
4040                         err = -EINVAL;
4041                         goto out;
4042                 }
4043
4044                 if (!rdev->ops->set_default_beacon_key) {
4045                         err = -EOPNOTSUPP;
4046                         goto out;
4047                 }
4048
4049                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4050                 if (err)
4051                         goto out;
4052
4053                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4054                 if (err)
4055                         goto out;
4056         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4057                    wiphy_ext_feature_isset(&rdev->wiphy,
4058                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4059                 u8 *mac_addr = NULL;
4060
4061                 if (info->attrs[NL80211_ATTR_MAC])
4062                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4063
4064                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4065                         err = -EINVAL;
4066                         goto out;
4067                 }
4068
4069                 err = rdev_add_key(rdev, dev, key.idx,
4070                                    NL80211_KEYTYPE_PAIRWISE,
4071                                    mac_addr, &key.p);
4072         } else {
4073                 err = -EINVAL;
4074         }
4075  out:
4076         wdev_unlock(dev->ieee80211_ptr);
4077
4078         return err;
4079 }
4080
4081 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4082 {
4083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4084         int err;
4085         struct net_device *dev = info->user_ptr[1];
4086         struct key_parse key;
4087         const u8 *mac_addr = NULL;
4088
4089         err = nl80211_parse_key(info, &key);
4090         if (err)
4091                 return err;
4092
4093         if (!key.p.key) {
4094                 GENL_SET_ERR_MSG(info, "no key");
4095                 return -EINVAL;
4096         }
4097
4098         if (info->attrs[NL80211_ATTR_MAC])
4099                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4100
4101         if (key.type == -1) {
4102                 if (mac_addr)
4103                         key.type = NL80211_KEYTYPE_PAIRWISE;
4104                 else
4105                         key.type = NL80211_KEYTYPE_GROUP;
4106         }
4107
4108         /* for now */
4109         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4110             key.type != NL80211_KEYTYPE_GROUP) {
4111                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4112                 return -EINVAL;
4113         }
4114
4115         if (key.type == NL80211_KEYTYPE_GROUP &&
4116             info->attrs[NL80211_ATTR_VLAN_ID])
4117                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4118
4119         if (!rdev->ops->add_key)
4120                 return -EOPNOTSUPP;
4121
4122         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4123                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4124                                            mac_addr)) {
4125                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4126                 return -EINVAL;
4127         }
4128
4129         wdev_lock(dev->ieee80211_ptr);
4130         err = nl80211_key_allowed(dev->ieee80211_ptr);
4131         if (err)
4132                 GENL_SET_ERR_MSG(info, "key not allowed");
4133         if (!err) {
4134                 err = rdev_add_key(rdev, dev, key.idx,
4135                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4136                                     mac_addr, &key.p);
4137                 if (err)
4138                         GENL_SET_ERR_MSG(info, "key addition failed");
4139         }
4140         wdev_unlock(dev->ieee80211_ptr);
4141
4142         return err;
4143 }
4144
4145 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4146 {
4147         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4148         int err;
4149         struct net_device *dev = info->user_ptr[1];
4150         u8 *mac_addr = NULL;
4151         struct key_parse key;
4152
4153         err = nl80211_parse_key(info, &key);
4154         if (err)
4155                 return err;
4156
4157         if (info->attrs[NL80211_ATTR_MAC])
4158                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4159
4160         if (key.type == -1) {
4161                 if (mac_addr)
4162                         key.type = NL80211_KEYTYPE_PAIRWISE;
4163                 else
4164                         key.type = NL80211_KEYTYPE_GROUP;
4165         }
4166
4167         /* for now */
4168         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4169             key.type != NL80211_KEYTYPE_GROUP)
4170                 return -EINVAL;
4171
4172         if (!rdev->ops->del_key)
4173                 return -EOPNOTSUPP;
4174
4175         wdev_lock(dev->ieee80211_ptr);
4176         err = nl80211_key_allowed(dev->ieee80211_ptr);
4177
4178         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4179             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4180                 err = -ENOENT;
4181
4182         if (!err)
4183                 err = rdev_del_key(rdev, dev, key.idx,
4184                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4185                                    mac_addr);
4186
4187 #ifdef CONFIG_CFG80211_WEXT
4188         if (!err) {
4189                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4190                         dev->ieee80211_ptr->wext.default_key = -1;
4191                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4192                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4193         }
4194 #endif
4195         wdev_unlock(dev->ieee80211_ptr);
4196
4197         return err;
4198 }
4199
4200 /* This function returns an error or the number of nested attributes */
4201 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4202 {
4203         struct nlattr *attr;
4204         int n_entries = 0, tmp;
4205
4206         nla_for_each_nested(attr, nl_attr, tmp) {
4207                 if (nla_len(attr) != ETH_ALEN)
4208                         return -EINVAL;
4209
4210                 n_entries++;
4211         }
4212
4213         return n_entries;
4214 }
4215
4216 /*
4217  * This function parses ACL information and allocates memory for ACL data.
4218  * On successful return, the calling function is responsible to free the
4219  * ACL buffer returned by this function.
4220  */
4221 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4222                                                 struct genl_info *info)
4223 {
4224         enum nl80211_acl_policy acl_policy;
4225         struct nlattr *attr;
4226         struct cfg80211_acl_data *acl;
4227         int i = 0, n_entries, tmp;
4228
4229         if (!wiphy->max_acl_mac_addrs)
4230                 return ERR_PTR(-EOPNOTSUPP);
4231
4232         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4233                 return ERR_PTR(-EINVAL);
4234
4235         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4236         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4237             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4238                 return ERR_PTR(-EINVAL);
4239
4240         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4241                 return ERR_PTR(-EINVAL);
4242
4243         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4244         if (n_entries < 0)
4245                 return ERR_PTR(n_entries);
4246
4247         if (n_entries > wiphy->max_acl_mac_addrs)
4248                 return ERR_PTR(-ENOTSUPP);
4249
4250         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4251         if (!acl)
4252                 return ERR_PTR(-ENOMEM);
4253
4254         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4255                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4256                 i++;
4257         }
4258
4259         acl->n_acl_entries = n_entries;
4260         acl->acl_policy = acl_policy;
4261
4262         return acl;
4263 }
4264
4265 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4266 {
4267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4268         struct net_device *dev = info->user_ptr[1];
4269         struct cfg80211_acl_data *acl;
4270         int err;
4271
4272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4273             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4274                 return -EOPNOTSUPP;
4275
4276         if (!dev->ieee80211_ptr->beacon_interval)
4277                 return -EINVAL;
4278
4279         acl = parse_acl_data(&rdev->wiphy, info);
4280         if (IS_ERR(acl))
4281                 return PTR_ERR(acl);
4282
4283         err = rdev_set_mac_acl(rdev, dev, acl);
4284
4285         kfree(acl);
4286
4287         return err;
4288 }
4289
4290 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4291                            u8 *rates, u8 rates_len)
4292 {
4293         u8 i;
4294         u32 mask = 0;
4295
4296         for (i = 0; i < rates_len; i++) {
4297                 int rate = (rates[i] & 0x7f) * 5;
4298                 int ridx;
4299
4300                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4301                         struct ieee80211_rate *srate =
4302                                 &sband->bitrates[ridx];
4303                         if (rate == srate->bitrate) {
4304                                 mask |= 1 << ridx;
4305                                 break;
4306                         }
4307                 }
4308                 if (ridx == sband->n_bitrates)
4309                         return 0; /* rate not found */
4310         }
4311
4312         return mask;
4313 }
4314
4315 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4316                                u8 *rates, u8 rates_len,
4317                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4318 {
4319         u8 i;
4320
4321         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4322
4323         for (i = 0; i < rates_len; i++) {
4324                 int ridx, rbit;
4325
4326                 ridx = rates[i] / 8;
4327                 rbit = BIT(rates[i] % 8);
4328
4329                 /* check validity */
4330                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4331                         return false;
4332
4333                 /* check availability */
4334                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4335                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4336                         mcs[ridx] |= rbit;
4337                 else
4338                         return false;
4339         }
4340
4341         return true;
4342 }
4343
4344 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4345 {
4346         u16 mcs_mask = 0;
4347
4348         switch (vht_mcs_map) {
4349         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4350                 break;
4351         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4352                 mcs_mask = 0x00FF;
4353                 break;
4354         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4355                 mcs_mask = 0x01FF;
4356                 break;
4357         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4358                 mcs_mask = 0x03FF;
4359                 break;
4360         default:
4361                 break;
4362         }
4363
4364         return mcs_mask;
4365 }
4366
4367 static void vht_build_mcs_mask(u16 vht_mcs_map,
4368                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4369 {
4370         u8 nss;
4371
4372         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4373                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4374                 vht_mcs_map >>= 2;
4375         }
4376 }
4377
4378 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4379                              struct nl80211_txrate_vht *txrate,
4380                              u16 mcs[NL80211_VHT_NSS_MAX])
4381 {
4382         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4383         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4384         u8 i;
4385
4386         if (!sband->vht_cap.vht_supported)
4387                 return false;
4388
4389         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4390
4391         /* Build vht_mcs_mask from VHT capabilities */
4392         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4393
4394         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4395                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4396                         mcs[i] = txrate->mcs[i];
4397                 else
4398                         return false;
4399         }
4400
4401         return true;
4402 }
4403
4404 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4405         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4406                                     .len = NL80211_MAX_SUPP_RATES },
4407         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4408                                 .len = NL80211_MAX_SUPP_HT_RATES },
4409         [NL80211_TXRATE_VHT] = {
4410                 .type = NLA_EXACT_LEN_WARN,
4411                 .len = sizeof(struct nl80211_txrate_vht),
4412         },
4413         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4414 };
4415
4416 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4417                                          struct cfg80211_bitrate_mask *mask)
4418 {
4419         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4421         int rem, i;
4422         struct nlattr *tx_rates;
4423         struct ieee80211_supported_band *sband;
4424         u16 vht_tx_mcs_map;
4425
4426         memset(mask, 0, sizeof(*mask));
4427         /* Default to all rates enabled */
4428         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4429                 sband = rdev->wiphy.bands[i];
4430
4431                 if (!sband)
4432                         continue;
4433
4434                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4435                 memcpy(mask->control[i].ht_mcs,
4436                        sband->ht_cap.mcs.rx_mask,
4437                        sizeof(mask->control[i].ht_mcs));
4438
4439                 if (!sband->vht_cap.vht_supported)
4440                         continue;
4441
4442                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4443                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4444         }
4445
4446         /* if no rates are given set it back to the defaults */
4447         if (!info->attrs[NL80211_ATTR_TX_RATES])
4448                 goto out;
4449
4450         /* The nested attribute uses enum nl80211_band as the index. This maps
4451          * directly to the enum nl80211_band values used in cfg80211.
4452          */
4453         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4454         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4455                 enum nl80211_band band = nla_type(tx_rates);
4456                 int err;
4457
4458                 if (band < 0 || band >= NUM_NL80211_BANDS)
4459                         return -EINVAL;
4460                 sband = rdev->wiphy.bands[band];
4461                 if (sband == NULL)
4462                         return -EINVAL;
4463                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4464                                                   tx_rates,
4465                                                   nl80211_txattr_policy,
4466                                                   info->extack);
4467                 if (err)
4468                         return err;
4469                 if (tb[NL80211_TXRATE_LEGACY]) {
4470                         mask->control[band].legacy = rateset_to_mask(
4471                                 sband,
4472                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4473                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4474                         if ((mask->control[band].legacy == 0) &&
4475                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4476                                 return -EINVAL;
4477                 }
4478                 if (tb[NL80211_TXRATE_HT]) {
4479                         if (!ht_rateset_to_mask(
4480                                         sband,
4481                                         nla_data(tb[NL80211_TXRATE_HT]),
4482                                         nla_len(tb[NL80211_TXRATE_HT]),
4483                                         mask->control[band].ht_mcs))
4484                                 return -EINVAL;
4485                 }
4486                 if (tb[NL80211_TXRATE_VHT]) {
4487                         if (!vht_set_mcs_mask(
4488                                         sband,
4489                                         nla_data(tb[NL80211_TXRATE_VHT]),
4490                                         mask->control[band].vht_mcs))
4491                                 return -EINVAL;
4492                 }
4493                 if (tb[NL80211_TXRATE_GI]) {
4494                         mask->control[band].gi =
4495                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4496                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4497                                 return -EINVAL;
4498                 }
4499
4500                 if (mask->control[band].legacy == 0) {
4501                         /* don't allow empty legacy rates if HT or VHT
4502                          * are not even supported.
4503                          */
4504                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4505                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4506                                 return -EINVAL;
4507
4508                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4509                                 if (mask->control[band].ht_mcs[i])
4510                                         goto out;
4511
4512                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4513                                 if (mask->control[band].vht_mcs[i])
4514                                         goto out;
4515
4516                         /* legacy and mcs rates may not be both empty */
4517                         return -EINVAL;
4518                 }
4519         }
4520
4521 out:
4522         return 0;
4523 }
4524
4525 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4526                                    enum nl80211_band band,
4527                                    struct cfg80211_bitrate_mask *beacon_rate)
4528 {
4529         u32 count_ht, count_vht, i;
4530         u32 rate = beacon_rate->control[band].legacy;
4531
4532         /* Allow only one rate */
4533         if (hweight32(rate) > 1)
4534                 return -EINVAL;
4535
4536         count_ht = 0;
4537         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4538                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4539                         return -EINVAL;
4540                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4541                         count_ht++;
4542                         if (count_ht > 1)
4543                                 return -EINVAL;
4544                 }
4545                 if (count_ht && rate)
4546                         return -EINVAL;
4547         }
4548
4549         count_vht = 0;
4550         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4551                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4552                         return -EINVAL;
4553                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4554                         count_vht++;
4555                         if (count_vht > 1)
4556                                 return -EINVAL;
4557                 }
4558                 if (count_vht && rate)
4559                         return -EINVAL;
4560         }
4561
4562         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4563                 return -EINVAL;
4564
4565         if (rate &&
4566             !wiphy_ext_feature_isset(&rdev->wiphy,
4567                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4568                 return -EINVAL;
4569         if (count_ht &&
4570             !wiphy_ext_feature_isset(&rdev->wiphy,
4571                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4572                 return -EINVAL;
4573         if (count_vht &&
4574             !wiphy_ext_feature_isset(&rdev->wiphy,
4575                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4576                 return -EINVAL;
4577
4578         return 0;
4579 }
4580
4581 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4582                                 struct nlattr *attrs[],
4583                                 struct cfg80211_beacon_data *bcn)
4584 {
4585         bool haveinfo = false;
4586         int err;
4587
4588         memset(bcn, 0, sizeof(*bcn));
4589
4590         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4591                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4592                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4593                 if (!bcn->head_len)
4594                         return -EINVAL;
4595                 haveinfo = true;
4596         }
4597
4598         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4599                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4600                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4601                 haveinfo = true;
4602         }
4603
4604         if (!haveinfo)
4605                 return -EINVAL;
4606
4607         if (attrs[NL80211_ATTR_IE]) {
4608                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4609                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4610         }
4611
4612         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4613                 bcn->proberesp_ies =
4614                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4615                 bcn->proberesp_ies_len =
4616                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4617         }
4618
4619         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4620                 bcn->assocresp_ies =
4621                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4622                 bcn->assocresp_ies_len =
4623                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4624         }
4625
4626         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4627                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4628                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4629         }
4630
4631         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4632                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4633
4634                 err = nla_parse_nested_deprecated(tb,
4635                                                   NL80211_FTM_RESP_ATTR_MAX,
4636                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4637                                                   NULL, NULL);
4638                 if (err)
4639                         return err;
4640
4641                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4642                     wiphy_ext_feature_isset(&rdev->wiphy,
4643                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4644                         bcn->ftm_responder = 1;
4645                 else
4646                         return -EOPNOTSUPP;
4647
4648                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4649                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4650                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4651                 }
4652
4653                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4654                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4655                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4656                 }
4657         } else {
4658                 bcn->ftm_responder = -1;
4659         }
4660
4661         return 0;
4662 }
4663
4664 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4665                                     struct ieee80211_he_obss_pd *he_obss_pd)
4666 {
4667         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4668         int err;
4669
4670         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4671                                he_obss_pd_policy, NULL);
4672         if (err)
4673                 return err;
4674
4675         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4676             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4677                 return -EINVAL;
4678
4679         he_obss_pd->min_offset =
4680                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4681         he_obss_pd->max_offset =
4682                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4683
4684         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4685                 return -EINVAL;
4686
4687         he_obss_pd->enable = true;
4688
4689         return 0;
4690 }
4691
4692 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4693                                       struct cfg80211_he_bss_color *he_bss_color)
4694 {
4695         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4696         int err;
4697
4698         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4699                                he_bss_color_policy, NULL);
4700         if (err)
4701                 return err;
4702
4703         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4704                 return -EINVAL;
4705
4706         he_bss_color->color =
4707                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4708         he_bss_color->disabled =
4709                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4710         he_bss_color->partial =
4711                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4712
4713         return 0;
4714 }
4715
4716 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4717                                             const u8 *rates)
4718 {
4719         int i;
4720
4721         if (!rates)
4722                 return;
4723
4724         for (i = 0; i < rates[1]; i++) {
4725                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4726                         params->ht_required = true;
4727                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4728                         params->vht_required = true;
4729         }
4730 }
4731
4732 /*
4733  * Since the nl80211 API didn't include, from the beginning, attributes about
4734  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4735  * benefit of drivers that rebuild IEs in the firmware.
4736  */
4737 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4738 {
4739         const struct cfg80211_beacon_data *bcn = &params->beacon;
4740         size_t ies_len = bcn->tail_len;
4741         const u8 *ies = bcn->tail;
4742         const u8 *rates;
4743         const u8 *cap;
4744
4745         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4746         nl80211_check_ap_rate_selectors(params, rates);
4747
4748         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4749         nl80211_check_ap_rate_selectors(params, rates);
4750
4751         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4752         if (cap && cap[1] >= sizeof(*params->ht_cap))
4753                 params->ht_cap = (void *)(cap + 2);
4754         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4755         if (cap && cap[1] >= sizeof(*params->vht_cap))
4756                 params->vht_cap = (void *)(cap + 2);
4757         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4758         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4759                 params->he_cap = (void *)(cap + 3);
4760         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4761         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4762                 params->he_oper = (void *)(cap + 3);
4763 }
4764
4765 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4766                                    struct cfg80211_ap_settings *params)
4767 {
4768         struct wireless_dev *wdev;
4769         bool ret = false;
4770
4771         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4772                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4773                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4774                         continue;
4775
4776                 if (!wdev->preset_chandef.chan)
4777                         continue;
4778
4779                 params->chandef = wdev->preset_chandef;
4780                 ret = true;
4781                 break;
4782         }
4783
4784         return ret;
4785 }
4786
4787 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4788                                     enum nl80211_auth_type auth_type,
4789                                     enum nl80211_commands cmd)
4790 {
4791         if (auth_type > NL80211_AUTHTYPE_MAX)
4792                 return false;
4793
4794         switch (cmd) {
4795         case NL80211_CMD_AUTHENTICATE:
4796                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4797                     auth_type == NL80211_AUTHTYPE_SAE)
4798                         return false;
4799                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4800                                              NL80211_EXT_FEATURE_FILS_STA) &&
4801                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4802                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4803                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4804                         return false;
4805                 return true;
4806         case NL80211_CMD_CONNECT:
4807                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4808                     !wiphy_ext_feature_isset(&rdev->wiphy,
4809                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4810                     auth_type == NL80211_AUTHTYPE_SAE)
4811                         return false;
4812
4813                 /* FILS with SK PFS or PK not supported yet */
4814                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4815                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4816                         return false;
4817                 if (!wiphy_ext_feature_isset(
4818                             &rdev->wiphy,
4819                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4820                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4821                         return false;
4822                 return true;
4823         case NL80211_CMD_START_AP:
4824                 /* SAE not supported yet */
4825                 if (auth_type == NL80211_AUTHTYPE_SAE)
4826                         return false;
4827                 /* FILS not supported yet */
4828                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4829                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4830                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4831                         return false;
4832                 return true;
4833         default:
4834                 return false;
4835         }
4836 }
4837
4838 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4839 {
4840         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4841         struct net_device *dev = info->user_ptr[1];
4842         struct wireless_dev *wdev = dev->ieee80211_ptr;
4843         struct cfg80211_ap_settings params;
4844         int err;
4845
4846         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4847             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4848                 return -EOPNOTSUPP;
4849
4850         if (!rdev->ops->start_ap)
4851                 return -EOPNOTSUPP;
4852
4853         if (wdev->beacon_interval)
4854                 return -EALREADY;
4855
4856         memset(&params, 0, sizeof(params));
4857
4858         /* these are required for START_AP */
4859         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4860             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4861             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4862                 return -EINVAL;
4863
4864         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4865         if (err)
4866                 return err;
4867
4868         params.beacon_interval =
4869                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4870         params.dtim_period =
4871                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4872
4873         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4874                                            params.beacon_interval);
4875         if (err)
4876                 return err;
4877
4878         /*
4879          * In theory, some of these attributes should be required here
4880          * but since they were not used when the command was originally
4881          * added, keep them optional for old user space programs to let
4882          * them continue to work with drivers that do not need the
4883          * additional information -- drivers must check!
4884          */
4885         if (info->attrs[NL80211_ATTR_SSID]) {
4886                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4887                 params.ssid_len =
4888                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4889                 if (params.ssid_len == 0 ||
4890                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4891                         return -EINVAL;
4892         }
4893
4894         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4895                 params.hidden_ssid = nla_get_u32(
4896                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4897
4898         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4899
4900         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4901                 params.auth_type = nla_get_u32(
4902                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4903                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4904                                              NL80211_CMD_START_AP))
4905                         return -EINVAL;
4906         } else
4907                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4908
4909         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4910                                       NL80211_MAX_NR_CIPHER_SUITES);
4911         if (err)
4912                 return err;
4913
4914         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4915                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4916                         return -EOPNOTSUPP;
4917                 params.inactivity_timeout = nla_get_u16(
4918                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4919         }
4920
4921         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4922                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4923                         return -EINVAL;
4924                 params.p2p_ctwindow =
4925                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4926                 if (params.p2p_ctwindow != 0 &&
4927                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4928                         return -EINVAL;
4929         }
4930
4931         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4932                 u8 tmp;
4933
4934                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4935                         return -EINVAL;
4936                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4937                 params.p2p_opp_ps = tmp;
4938                 if (params.p2p_opp_ps != 0 &&
4939                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4940                         return -EINVAL;
4941         }
4942
4943         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4944                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4945                 if (err)
4946                         return err;
4947         } else if (wdev->preset_chandef.chan) {
4948                 params.chandef = wdev->preset_chandef;
4949         } else if (!nl80211_get_ap_channel(rdev, &params))
4950                 return -EINVAL;
4951
4952         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4953                                            wdev->iftype))
4954                 return -EINVAL;
4955
4956         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4957                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4958                 if (err)
4959                         return err;
4960
4961                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4962                                               &params.beacon_rate);
4963                 if (err)
4964                         return err;
4965         }
4966
4967         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4968                 params.smps_mode =
4969                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4970                 switch (params.smps_mode) {
4971                 case NL80211_SMPS_OFF:
4972                         break;
4973                 case NL80211_SMPS_STATIC:
4974                         if (!(rdev->wiphy.features &
4975                               NL80211_FEATURE_STATIC_SMPS))
4976                                 return -EINVAL;
4977                         break;
4978                 case NL80211_SMPS_DYNAMIC:
4979                         if (!(rdev->wiphy.features &
4980                               NL80211_FEATURE_DYNAMIC_SMPS))
4981                                 return -EINVAL;
4982                         break;
4983                 default:
4984                         return -EINVAL;
4985                 }
4986         } else {
4987                 params.smps_mode = NL80211_SMPS_OFF;
4988         }
4989
4990         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4991         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4992                 return -EOPNOTSUPP;
4993
4994         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4995                 params.acl = parse_acl_data(&rdev->wiphy, info);
4996                 if (IS_ERR(params.acl))
4997                         return PTR_ERR(params.acl);
4998         }
4999
5000         params.twt_responder =
5001                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5002
5003         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5004                 err = nl80211_parse_he_obss_pd(
5005                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5006                                         &params.he_obss_pd);
5007                 goto out;
5008         }
5009
5010         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5011                 err = nl80211_parse_he_bss_color(
5012                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5013                                         &params.he_bss_color);
5014                 if (err)
5015                         return err;
5016         }
5017
5018         nl80211_calculate_ap_params(&params);
5019
5020         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5021                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5022
5023         wdev_lock(wdev);
5024         err = rdev_start_ap(rdev, dev, &params);
5025         if (!err) {
5026                 wdev->preset_chandef = params.chandef;
5027                 wdev->beacon_interval = params.beacon_interval;
5028                 wdev->chandef = params.chandef;
5029                 wdev->ssid_len = params.ssid_len;
5030                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5031
5032                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5033                         wdev->conn_owner_nlportid = info->snd_portid;
5034         }
5035         wdev_unlock(wdev);
5036
5037 out:
5038         kfree(params.acl);
5039
5040         return err;
5041 }
5042
5043 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5044 {
5045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5046         struct net_device *dev = info->user_ptr[1];
5047         struct wireless_dev *wdev = dev->ieee80211_ptr;
5048         struct cfg80211_beacon_data params;
5049         int err;
5050
5051         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5052             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5053                 return -EOPNOTSUPP;
5054
5055         if (!rdev->ops->change_beacon)
5056                 return -EOPNOTSUPP;
5057
5058         if (!wdev->beacon_interval)
5059                 return -EINVAL;
5060
5061         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5062         if (err)
5063                 return err;
5064
5065         wdev_lock(wdev);
5066         err = rdev_change_beacon(rdev, dev, &params);
5067         wdev_unlock(wdev);
5068
5069         return err;
5070 }
5071
5072 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5073 {
5074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5075         struct net_device *dev = info->user_ptr[1];
5076
5077         return cfg80211_stop_ap(rdev, dev, false);
5078 }
5079
5080 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5081         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5082         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5083         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5084         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5085         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5086         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5087 };
5088
5089 static int parse_station_flags(struct genl_info *info,
5090                                enum nl80211_iftype iftype,
5091                                struct station_parameters *params)
5092 {
5093         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5094         struct nlattr *nla;
5095         int flag;
5096
5097         /*
5098          * Try parsing the new attribute first so userspace
5099          * can specify both for older kernels.
5100          */
5101         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5102         if (nla) {
5103                 struct nl80211_sta_flag_update *sta_flags;
5104
5105                 sta_flags = nla_data(nla);
5106                 params->sta_flags_mask = sta_flags->mask;
5107                 params->sta_flags_set = sta_flags->set;
5108                 params->sta_flags_set &= params->sta_flags_mask;
5109                 if ((params->sta_flags_mask |
5110                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5111                         return -EINVAL;
5112                 return 0;
5113         }
5114
5115         /* if present, parse the old attribute */
5116
5117         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5118         if (!nla)
5119                 return 0;
5120
5121         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5122                 return -EINVAL;
5123
5124         /*
5125          * Only allow certain flags for interface types so that
5126          * other attributes are silently ignored. Remember that
5127          * this is backward compatibility code with old userspace
5128          * and shouldn't be hit in other cases anyway.
5129          */
5130         switch (iftype) {
5131         case NL80211_IFTYPE_AP:
5132         case NL80211_IFTYPE_AP_VLAN:
5133         case NL80211_IFTYPE_P2P_GO:
5134                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5135                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5136                                          BIT(NL80211_STA_FLAG_WME) |
5137                                          BIT(NL80211_STA_FLAG_MFP);
5138                 break;
5139         case NL80211_IFTYPE_P2P_CLIENT:
5140         case NL80211_IFTYPE_STATION:
5141                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5142                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5143                 break;
5144         case NL80211_IFTYPE_MESH_POINT:
5145                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5146                                          BIT(NL80211_STA_FLAG_MFP) |
5147                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5148                 break;
5149         default:
5150                 return -EINVAL;
5151         }
5152
5153         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5154                 if (flags[flag]) {
5155                         params->sta_flags_set |= (1<<flag);
5156
5157                         /* no longer support new API additions in old API */
5158                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5159                                 return -EINVAL;
5160                 }
5161         }
5162
5163         return 0;
5164 }
5165
5166 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5167 {
5168         struct nlattr *rate;
5169         u32 bitrate;
5170         u16 bitrate_compat;
5171         enum nl80211_rate_info rate_flg;
5172
5173         rate = nla_nest_start_noflag(msg, attr);
5174         if (!rate)
5175                 return false;
5176
5177         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5178         bitrate = cfg80211_calculate_bitrate(info);
5179         /* report 16-bit bitrate only if we can */
5180         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5181         if (bitrate > 0 &&
5182             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5183                 return false;
5184         if (bitrate_compat > 0 &&
5185             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5186                 return false;
5187
5188         switch (info->bw) {
5189         case RATE_INFO_BW_5:
5190                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5191                 break;
5192         case RATE_INFO_BW_10:
5193                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5194                 break;
5195         default:
5196                 WARN_ON(1);
5197                 /* fall through */
5198         case RATE_INFO_BW_20:
5199                 rate_flg = 0;
5200                 break;
5201         case RATE_INFO_BW_40:
5202                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5203                 break;
5204         case RATE_INFO_BW_80:
5205                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5206                 break;
5207         case RATE_INFO_BW_160:
5208                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5209                 break;
5210         case RATE_INFO_BW_HE_RU:
5211                 rate_flg = 0;
5212                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5213         }
5214
5215         if (rate_flg && nla_put_flag(msg, rate_flg))
5216                 return false;
5217
5218         if (info->flags & RATE_INFO_FLAGS_MCS) {
5219                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5220                         return false;
5221                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5222                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5223                         return false;
5224         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5225                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5226                         return false;
5227                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5228                         return false;
5229                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5230                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5231                         return false;
5232         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5233                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5234                         return false;
5235                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5236                         return false;
5237                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5238                         return false;
5239                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5240                         return false;
5241                 if (info->bw == RATE_INFO_BW_HE_RU &&
5242                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5243                                info->he_ru_alloc))
5244                         return false;
5245         }
5246
5247         nla_nest_end(msg, rate);
5248         return true;
5249 }
5250
5251 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5252                                int id)
5253 {
5254         void *attr;
5255         int i = 0;
5256
5257         if (!mask)
5258                 return true;
5259
5260         attr = nla_nest_start_noflag(msg, id);
5261         if (!attr)
5262                 return false;
5263
5264         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5265                 if (!(mask & BIT(i)))
5266                         continue;
5267
5268                 if (nla_put_u8(msg, i, signal[i]))
5269                         return false;
5270         }
5271
5272         nla_nest_end(msg, attr);
5273
5274         return true;
5275 }
5276
5277 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5278                                 u32 seq, int flags,
5279                                 struct cfg80211_registered_device *rdev,
5280                                 struct net_device *dev,
5281                                 const u8 *mac_addr, struct station_info *sinfo)
5282 {
5283         void *hdr;
5284         struct nlattr *sinfoattr, *bss_param;
5285
5286         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5287         if (!hdr) {
5288                 cfg80211_sinfo_release_content(sinfo);
5289                 return -1;
5290         }
5291
5292         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5293             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5294             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5295                 goto nla_put_failure;
5296
5297         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5298         if (!sinfoattr)
5299                 goto nla_put_failure;
5300
5301 #define PUT_SINFO(attr, memb, type) do {                                \
5302         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5303         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5304             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5305                              sinfo->memb))                              \
5306                 goto nla_put_failure;                                   \
5307         } while (0)
5308 #define PUT_SINFO_U64(attr, memb) do {                                  \
5309         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5310             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5311                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5312                 goto nla_put_failure;                                   \
5313         } while (0)
5314
5315         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5316         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5317         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5318
5319         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5320                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5321             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5322                         (u32)sinfo->rx_bytes))
5323                 goto nla_put_failure;
5324
5325         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5326                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5327             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5328                         (u32)sinfo->tx_bytes))
5329                 goto nla_put_failure;
5330
5331         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5332         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5333         PUT_SINFO(LLID, llid, u16);
5334         PUT_SINFO(PLID, plid, u16);
5335         PUT_SINFO(PLINK_STATE, plink_state, u8);
5336         PUT_SINFO_U64(RX_DURATION, rx_duration);
5337         PUT_SINFO_U64(TX_DURATION, tx_duration);
5338
5339         if (wiphy_ext_feature_isset(&rdev->wiphy,
5340                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5341                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5342
5343         switch (rdev->wiphy.signal_type) {
5344         case CFG80211_SIGNAL_TYPE_MBM:
5345                 PUT_SINFO(SIGNAL, signal, u8);
5346                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5347                 break;
5348         default:
5349                 break;
5350         }
5351         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5352                 if (!nl80211_put_signal(msg, sinfo->chains,
5353                                         sinfo->chain_signal,
5354                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5355                         goto nla_put_failure;
5356         }
5357         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5358                 if (!nl80211_put_signal(msg, sinfo->chains,
5359                                         sinfo->chain_signal_avg,
5360                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5361                         goto nla_put_failure;
5362         }
5363         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5364                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5365                                           NL80211_STA_INFO_TX_BITRATE))
5366                         goto nla_put_failure;
5367         }
5368         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5369                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5370                                           NL80211_STA_INFO_RX_BITRATE))
5371                         goto nla_put_failure;
5372         }
5373
5374         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5375         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5376         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5377         PUT_SINFO(TX_FAILED, tx_failed, u32);
5378         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5379         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5380         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5381         PUT_SINFO(LOCAL_PM, local_pm, u32);
5382         PUT_SINFO(PEER_PM, peer_pm, u32);
5383         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5384         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5385
5386         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5387                 bss_param = nla_nest_start_noflag(msg,
5388                                                   NL80211_STA_INFO_BSS_PARAM);
5389                 if (!bss_param)
5390                         goto nla_put_failure;
5391
5392                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5393                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5394                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5395                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5396                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5397                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5398                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5399                                sinfo->bss_param.dtim_period) ||
5400                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5401                                 sinfo->bss_param.beacon_interval))
5402                         goto nla_put_failure;
5403
5404                 nla_nest_end(msg, bss_param);
5405         }
5406         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5407             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5408                     sizeof(struct nl80211_sta_flag_update),
5409                     &sinfo->sta_flags))
5410                 goto nla_put_failure;
5411
5412         PUT_SINFO_U64(T_OFFSET, t_offset);
5413         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5414         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5415         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5416         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5417         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5418         if (wiphy_ext_feature_isset(&rdev->wiphy,
5419                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5420                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5421                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5422         }
5423
5424 #undef PUT_SINFO
5425 #undef PUT_SINFO_U64
5426
5427         if (sinfo->pertid) {
5428                 struct nlattr *tidsattr;
5429                 int tid;
5430
5431                 tidsattr = nla_nest_start_noflag(msg,
5432                                                  NL80211_STA_INFO_TID_STATS);
5433                 if (!tidsattr)
5434                         goto nla_put_failure;
5435
5436                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5437                         struct cfg80211_tid_stats *tidstats;
5438                         struct nlattr *tidattr;
5439
5440                         tidstats = &sinfo->pertid[tid];
5441
5442                         if (!tidstats->filled)
5443                                 continue;
5444
5445                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5446                         if (!tidattr)
5447                                 goto nla_put_failure;
5448
5449 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5450         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5451             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5452                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5453                 goto nla_put_failure;                                   \
5454         } while (0)
5455
5456                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5457                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5458                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5459                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5460
5461 #undef PUT_TIDVAL_U64
5462                         if ((tidstats->filled &
5463                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5464                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5465                                                    NL80211_TID_STATS_TXQ_STATS))
5466                                 goto nla_put_failure;
5467
5468                         nla_nest_end(msg, tidattr);
5469                 }
5470
5471                 nla_nest_end(msg, tidsattr);
5472         }
5473
5474         nla_nest_end(msg, sinfoattr);
5475
5476         if (sinfo->assoc_req_ies_len &&
5477             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5478                     sinfo->assoc_req_ies))
5479                 goto nla_put_failure;
5480
5481         cfg80211_sinfo_release_content(sinfo);
5482         genlmsg_end(msg, hdr);
5483         return 0;
5484
5485  nla_put_failure:
5486         cfg80211_sinfo_release_content(sinfo);
5487         genlmsg_cancel(msg, hdr);
5488         return -EMSGSIZE;
5489 }
5490
5491 static int nl80211_dump_station(struct sk_buff *skb,
5492                                 struct netlink_callback *cb)
5493 {
5494         struct station_info sinfo;
5495         struct cfg80211_registered_device *rdev;
5496         struct wireless_dev *wdev;
5497         u8 mac_addr[ETH_ALEN];
5498         int sta_idx = cb->args[2];
5499         int err;
5500
5501         rtnl_lock();
5502         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5503         if (err)
5504                 goto out_err;
5505
5506         if (!wdev->netdev) {
5507                 err = -EINVAL;
5508                 goto out_err;
5509         }
5510
5511         if (!rdev->ops->dump_station) {
5512                 err = -EOPNOTSUPP;
5513                 goto out_err;
5514         }
5515
5516         while (1) {
5517                 memset(&sinfo, 0, sizeof(sinfo));
5518                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5519                                         mac_addr, &sinfo);
5520                 if (err == -ENOENT)
5521                         break;
5522                 if (err)
5523                         goto out_err;
5524
5525                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5526                                 NETLINK_CB(cb->skb).portid,
5527                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5528                                 rdev, wdev->netdev, mac_addr,
5529                                 &sinfo) < 0)
5530                         goto out;
5531
5532                 sta_idx++;
5533         }
5534
5535  out:
5536         cb->args[2] = sta_idx;
5537         err = skb->len;
5538  out_err:
5539         rtnl_unlock();
5540
5541         return err;
5542 }
5543
5544 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5545 {
5546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5547         struct net_device *dev = info->user_ptr[1];
5548         struct station_info sinfo;
5549         struct sk_buff *msg;
5550         u8 *mac_addr = NULL;
5551         int err;
5552
5553         memset(&sinfo, 0, sizeof(sinfo));
5554
5555         if (!info->attrs[NL80211_ATTR_MAC])
5556                 return -EINVAL;
5557
5558         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5559
5560         if (!rdev->ops->get_station)
5561                 return -EOPNOTSUPP;
5562
5563         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5564         if (err)
5565                 return err;
5566
5567         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5568         if (!msg) {
5569                 cfg80211_sinfo_release_content(&sinfo);
5570                 return -ENOMEM;
5571         }
5572
5573         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5574                                  info->snd_portid, info->snd_seq, 0,
5575                                  rdev, dev, mac_addr, &sinfo) < 0) {
5576                 nlmsg_free(msg);
5577                 return -ENOBUFS;
5578         }
5579
5580         return genlmsg_reply(msg, info);
5581 }
5582
5583 int cfg80211_check_station_change(struct wiphy *wiphy,
5584                                   struct station_parameters *params,
5585                                   enum cfg80211_station_type statype)
5586 {
5587         if (params->listen_interval != -1 &&
5588             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5589                 return -EINVAL;
5590
5591         if (params->support_p2p_ps != -1 &&
5592             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5593                 return -EINVAL;
5594
5595         if (params->aid &&
5596             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5597             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5598                 return -EINVAL;
5599
5600         /* When you run into this, adjust the code below for the new flag */
5601         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5602
5603         switch (statype) {
5604         case CFG80211_STA_MESH_PEER_KERNEL:
5605         case CFG80211_STA_MESH_PEER_USER:
5606                 /*
5607                  * No ignoring the TDLS flag here -- the userspace mesh
5608                  * code doesn't have the bug of including TDLS in the
5609                  * mask everywhere.
5610                  */
5611                 if (params->sta_flags_mask &
5612                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5613                                   BIT(NL80211_STA_FLAG_MFP) |
5614                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5615                         return -EINVAL;
5616                 break;
5617         case CFG80211_STA_TDLS_PEER_SETUP:
5618         case CFG80211_STA_TDLS_PEER_ACTIVE:
5619                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5620                         return -EINVAL;
5621                 /* ignore since it can't change */
5622                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5623                 break;
5624         default:
5625                 /* disallow mesh-specific things */
5626                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5627                         return -EINVAL;
5628                 if (params->local_pm)
5629                         return -EINVAL;
5630                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5631                         return -EINVAL;
5632         }
5633
5634         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5635             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5636                 /* TDLS can't be set, ... */
5637                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5638                         return -EINVAL;
5639                 /*
5640                  * ... but don't bother the driver with it. This works around
5641                  * a hostapd/wpa_supplicant issue -- it always includes the
5642                  * TLDS_PEER flag in the mask even for AP mode.
5643                  */
5644                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5645         }
5646
5647         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5648             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5649                 /* reject other things that can't change */
5650                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5651                         return -EINVAL;
5652                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5653                         return -EINVAL;
5654                 if (params->supported_rates)
5655                         return -EINVAL;
5656                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5657                     params->he_capa)
5658                         return -EINVAL;
5659         }
5660
5661         if (statype != CFG80211_STA_AP_CLIENT &&
5662             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5663                 if (params->vlan)
5664                         return -EINVAL;
5665         }
5666
5667         switch (statype) {
5668         case CFG80211_STA_AP_MLME_CLIENT:
5669                 /* Use this only for authorizing/unauthorizing a station */
5670                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5671                         return -EOPNOTSUPP;
5672                 break;
5673         case CFG80211_STA_AP_CLIENT:
5674         case CFG80211_STA_AP_CLIENT_UNASSOC:
5675                 /* accept only the listed bits */
5676                 if (params->sta_flags_mask &
5677                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5678                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5679                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5680                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5681                                   BIT(NL80211_STA_FLAG_WME) |
5682                                   BIT(NL80211_STA_FLAG_MFP)))
5683                         return -EINVAL;
5684
5685                 /* but authenticated/associated only if driver handles it */
5686                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5687                     params->sta_flags_mask &
5688                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5689                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5690                         return -EINVAL;
5691                 break;
5692         case CFG80211_STA_IBSS:
5693         case CFG80211_STA_AP_STA:
5694                 /* reject any changes other than AUTHORIZED */
5695                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5696                         return -EINVAL;
5697                 break;
5698         case CFG80211_STA_TDLS_PEER_SETUP:
5699                 /* reject any changes other than AUTHORIZED or WME */
5700                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5701                                                BIT(NL80211_STA_FLAG_WME)))
5702                         return -EINVAL;
5703                 /* force (at least) rates when authorizing */
5704                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5705                     !params->supported_rates)
5706                         return -EINVAL;
5707                 break;
5708         case CFG80211_STA_TDLS_PEER_ACTIVE:
5709                 /* reject any changes */
5710                 return -EINVAL;
5711         case CFG80211_STA_MESH_PEER_KERNEL:
5712                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5713                         return -EINVAL;
5714                 break;
5715         case CFG80211_STA_MESH_PEER_USER:
5716                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5717                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5718                         return -EINVAL;
5719                 break;
5720         }
5721
5722         /*
5723          * Older kernel versions ignored this attribute entirely, so don't
5724          * reject attempts to update it but mark it as unused instead so the
5725          * driver won't look at the data.
5726          */
5727         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5728             statype != CFG80211_STA_TDLS_PEER_SETUP)
5729                 params->opmode_notif_used = false;
5730
5731         return 0;
5732 }
5733 EXPORT_SYMBOL(cfg80211_check_station_change);
5734
5735 /*
5736  * Get vlan interface making sure it is running and on the right wiphy.
5737  */
5738 static struct net_device *get_vlan(struct genl_info *info,
5739                                    struct cfg80211_registered_device *rdev)
5740 {
5741         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5742         struct net_device *v;
5743         int ret;
5744
5745         if (!vlanattr)
5746                 return NULL;
5747
5748         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5749         if (!v)
5750                 return ERR_PTR(-ENODEV);
5751
5752         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5753                 ret = -EINVAL;
5754                 goto error;
5755         }
5756
5757         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5758             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5759             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5760                 ret = -EINVAL;
5761                 goto error;
5762         }
5763
5764         if (!netif_running(v)) {
5765                 ret = -ENETDOWN;
5766                 goto error;
5767         }
5768
5769         return v;
5770  error:
5771         dev_put(v);
5772         return ERR_PTR(ret);
5773 }
5774
5775 static const struct nla_policy
5776 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5777         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5778         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5779 };
5780
5781 static int nl80211_parse_sta_wme(struct genl_info *info,
5782                                  struct station_parameters *params)
5783 {
5784         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5785         struct nlattr *nla;
5786         int err;
5787
5788         /* parse WME attributes if present */
5789         if (!info->attrs[NL80211_ATTR_STA_WME])
5790                 return 0;
5791
5792         nla = info->attrs[NL80211_ATTR_STA_WME];
5793         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5794                                           nl80211_sta_wme_policy,
5795                                           info->extack);
5796         if (err)
5797                 return err;
5798
5799         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5800                 params->uapsd_queues = nla_get_u8(
5801                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5802         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5803                 return -EINVAL;
5804
5805         if (tb[NL80211_STA_WME_MAX_SP])
5806                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5807
5808         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5809                 return -EINVAL;
5810
5811         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5812
5813         return 0;
5814 }
5815
5816 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5817                                       struct station_parameters *params)
5818 {
5819         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5820                 params->supported_channels =
5821                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5822                 params->supported_channels_len =
5823                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5824                 /*
5825                  * Need to include at least one (first channel, number of
5826                  * channels) tuple for each subband, and must have proper
5827                  * tuples for the rest of the data as well.
5828                  */
5829                 if (params->supported_channels_len < 2)
5830                         return -EINVAL;
5831                 if (params->supported_channels_len % 2)
5832                         return -EINVAL;
5833         }
5834
5835         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5836                 params->supported_oper_classes =
5837                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5838                 params->supported_oper_classes_len =
5839                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5840                 /*
5841                  * The value of the Length field of the Supported Operating
5842                  * Classes element is between 2 and 253.
5843                  */
5844                 if (params->supported_oper_classes_len < 2 ||
5845                     params->supported_oper_classes_len > 253)
5846                         return -EINVAL;
5847         }
5848         return 0;
5849 }
5850
5851 static int nl80211_set_station_tdls(struct genl_info *info,
5852                                     struct station_parameters *params)
5853 {
5854         int err;
5855         /* Dummy STA entry gets updated once the peer capabilities are known */
5856         if (info->attrs[NL80211_ATTR_PEER_AID])
5857                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5858         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5859                 params->ht_capa =
5860                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5861         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5862                 params->vht_capa =
5863                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5864         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5865                 params->he_capa =
5866                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5867                 params->he_capa_len =
5868                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5869
5870                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5871                         return -EINVAL;
5872         }
5873
5874         err = nl80211_parse_sta_channel_info(info, params);
5875         if (err)
5876                 return err;
5877
5878         return nl80211_parse_sta_wme(info, params);
5879 }
5880
5881 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5882                                              struct station_parameters *params)
5883 {
5884         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5885         int idx;
5886
5887         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5888                 if (!rdev->ops->set_tx_power ||
5889                     !wiphy_ext_feature_isset(&rdev->wiphy,
5890                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5891                         return -EOPNOTSUPP;
5892
5893                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5894                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5895
5896                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5897                         idx = NL80211_ATTR_STA_TX_POWER;
5898
5899                         if (info->attrs[idx])
5900                                 params->txpwr.power =
5901                                         nla_get_s16(info->attrs[idx]);
5902                         else
5903                                 return -EINVAL;
5904                 }
5905                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5906         }
5907
5908         return 0;
5909 }
5910
5911 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5912 {
5913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5914         struct net_device *dev = info->user_ptr[1];
5915         struct station_parameters params;
5916         u8 *mac_addr;
5917         int err;
5918
5919         memset(&params, 0, sizeof(params));
5920
5921         if (!rdev->ops->change_station)
5922                 return -EOPNOTSUPP;
5923
5924         /*
5925          * AID and listen_interval properties can be set only for unassociated
5926          * station. Include these parameters here and will check them in
5927          * cfg80211_check_station_change().
5928          */
5929         if (info->attrs[NL80211_ATTR_STA_AID])
5930                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5931
5932         if (info->attrs[NL80211_ATTR_VLAN_ID])
5933                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5934
5935         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5936                 params.listen_interval =
5937                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5938         else
5939                 params.listen_interval = -1;
5940
5941         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5942                 params.support_p2p_ps =
5943                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5944         else
5945                 params.support_p2p_ps = -1;
5946
5947         if (!info->attrs[NL80211_ATTR_MAC])
5948                 return -EINVAL;
5949
5950         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5951
5952         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5953                 params.supported_rates =
5954                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5955                 params.supported_rates_len =
5956                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5957         }
5958
5959         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5960                 params.capability =
5961                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5962                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5963         }
5964
5965         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5966                 params.ext_capab =
5967                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5968                 params.ext_capab_len =
5969                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5970         }
5971
5972         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5973                 return -EINVAL;
5974
5975         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5976                 params.plink_action =
5977                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5978
5979         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5980                 params.plink_state =
5981                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5982                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5983                         params.peer_aid = nla_get_u16(
5984                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5985                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5986         }
5987
5988         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5989                 params.local_pm = nla_get_u32(
5990                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5991
5992         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5993                 params.opmode_notif_used = true;
5994                 params.opmode_notif =
5995                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5996         }
5997
5998         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5999                 params.airtime_weight =
6000                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6001
6002         if (params.airtime_weight &&
6003             !wiphy_ext_feature_isset(&rdev->wiphy,
6004                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6005                 return -EOPNOTSUPP;
6006
6007         err = nl80211_parse_sta_txpower_setting(info, &params);
6008         if (err)
6009                 return err;
6010
6011         /* Include parameters for TDLS peer (will check later) */
6012         err = nl80211_set_station_tdls(info, &params);
6013         if (err)
6014                 return err;
6015
6016         params.vlan = get_vlan(info, rdev);
6017         if (IS_ERR(params.vlan))
6018                 return PTR_ERR(params.vlan);
6019
6020         switch (dev->ieee80211_ptr->iftype) {
6021         case NL80211_IFTYPE_AP:
6022         case NL80211_IFTYPE_AP_VLAN:
6023         case NL80211_IFTYPE_P2P_GO:
6024         case NL80211_IFTYPE_P2P_CLIENT:
6025         case NL80211_IFTYPE_STATION:
6026         case NL80211_IFTYPE_ADHOC:
6027         case NL80211_IFTYPE_MESH_POINT:
6028                 break;
6029         default:
6030                 err = -EOPNOTSUPP;
6031                 goto out_put_vlan;
6032         }
6033
6034         /* driver will call cfg80211_check_station_change() */
6035         err = rdev_change_station(rdev, dev, mac_addr, &params);
6036
6037  out_put_vlan:
6038         if (params.vlan)
6039                 dev_put(params.vlan);
6040
6041         return err;
6042 }
6043
6044 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6045 {
6046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6047         int err;
6048         struct net_device *dev = info->user_ptr[1];
6049         struct station_parameters params;
6050         u8 *mac_addr = NULL;
6051         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6052                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6053
6054         memset(&params, 0, sizeof(params));
6055
6056         if (!rdev->ops->add_station)
6057                 return -EOPNOTSUPP;
6058
6059         if (!info->attrs[NL80211_ATTR_MAC])
6060                 return -EINVAL;
6061
6062         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6063                 return -EINVAL;
6064
6065         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6066                 return -EINVAL;
6067
6068         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6069             !info->attrs[NL80211_ATTR_PEER_AID])
6070                 return -EINVAL;
6071
6072         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6073         params.supported_rates =
6074                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6075         params.supported_rates_len =
6076                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6077         params.listen_interval =
6078                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6079
6080         if (info->attrs[NL80211_ATTR_VLAN_ID])
6081                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6082
6083         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6084                 params.support_p2p_ps =
6085                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6086         } else {
6087                 /*
6088                  * if not specified, assume it's supported for P2P GO interface,
6089                  * and is NOT supported for AP interface
6090                  */
6091                 params.support_p2p_ps =
6092                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6093         }
6094
6095         if (info->attrs[NL80211_ATTR_PEER_AID])
6096                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6097         else
6098                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6099
6100         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6101                 params.capability =
6102                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6103                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6104         }
6105
6106         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6107                 params.ext_capab =
6108                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6109                 params.ext_capab_len =
6110                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6111         }
6112
6113         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6114                 params.ht_capa =
6115                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6116
6117         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6118                 params.vht_capa =
6119                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6120
6121         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6122                 params.he_capa =
6123                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6124                 params.he_capa_len =
6125                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6126
6127                 /* max len is validated in nla policy */
6128                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6129                         return -EINVAL;
6130         }
6131
6132         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6133                 params.opmode_notif_used = true;
6134                 params.opmode_notif =
6135                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6136         }
6137
6138         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6139                 params.plink_action =
6140                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6141
6142         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6143                 params.airtime_weight =
6144                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6145
6146         if (params.airtime_weight &&
6147             !wiphy_ext_feature_isset(&rdev->wiphy,
6148                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6149                 return -EOPNOTSUPP;
6150
6151         err = nl80211_parse_sta_txpower_setting(info, &params);
6152         if (err)
6153                 return err;
6154
6155         err = nl80211_parse_sta_channel_info(info, &params);
6156         if (err)
6157                 return err;
6158
6159         err = nl80211_parse_sta_wme(info, &params);
6160         if (err)
6161                 return err;
6162
6163         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6164                 return -EINVAL;
6165
6166         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6167          * as userspace might just pass through the capabilities from the IEs
6168          * directly, rather than enforcing this restriction and returning an
6169          * error in this case.
6170          */
6171         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6172                 params.ht_capa = NULL;
6173                 params.vht_capa = NULL;
6174
6175                 /* HE requires WME */
6176                 if (params.he_capa_len)
6177                         return -EINVAL;
6178         }
6179
6180         /* When you run into this, adjust the code below for the new flag */
6181         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6182
6183         switch (dev->ieee80211_ptr->iftype) {
6184         case NL80211_IFTYPE_AP:
6185         case NL80211_IFTYPE_AP_VLAN:
6186         case NL80211_IFTYPE_P2P_GO:
6187                 /* ignore WME attributes if iface/sta is not capable */
6188                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6189                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6190                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6191
6192                 /* TDLS peers cannot be added */
6193                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6194                     info->attrs[NL80211_ATTR_PEER_AID])
6195                         return -EINVAL;
6196                 /* but don't bother the driver with it */
6197                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6198
6199                 /* allow authenticated/associated only if driver handles it */
6200                 if (!(rdev->wiphy.features &
6201                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6202                     params.sta_flags_mask & auth_assoc)
6203                         return -EINVAL;
6204
6205                 /* Older userspace, or userspace wanting to be compatible with
6206                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6207                  * and assoc flags in the mask, but assumes the station will be
6208                  * added as associated anyway since this was the required driver
6209                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6210                  * introduced.
6211                  * In order to not bother drivers with this quirk in the API
6212                  * set the flags in both the mask and set for new stations in
6213                  * this case.
6214                  */
6215                 if (!(params.sta_flags_mask & auth_assoc)) {
6216                         params.sta_flags_mask |= auth_assoc;
6217                         params.sta_flags_set |= auth_assoc;
6218                 }
6219
6220                 /* must be last in here for error handling */
6221                 params.vlan = get_vlan(info, rdev);
6222                 if (IS_ERR(params.vlan))
6223                         return PTR_ERR(params.vlan);
6224                 break;
6225         case NL80211_IFTYPE_MESH_POINT:
6226                 /* ignore uAPSD data */
6227                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6228
6229                 /* associated is disallowed */
6230                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6231                         return -EINVAL;
6232                 /* TDLS peers cannot be added */
6233                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6234                     info->attrs[NL80211_ATTR_PEER_AID])
6235                         return -EINVAL;
6236                 break;
6237         case NL80211_IFTYPE_STATION:
6238         case NL80211_IFTYPE_P2P_CLIENT:
6239                 /* ignore uAPSD data */
6240                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6241
6242                 /* these are disallowed */
6243                 if (params.sta_flags_mask &
6244                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6245                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6246                         return -EINVAL;
6247                 /* Only TDLS peers can be added */
6248                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6249                         return -EINVAL;
6250                 /* Can only add if TDLS ... */
6251                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6252                         return -EOPNOTSUPP;
6253                 /* ... with external setup is supported */
6254                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6255                         return -EOPNOTSUPP;
6256                 /*
6257                  * Older wpa_supplicant versions always mark the TDLS peer
6258                  * as authorized, but it shouldn't yet be.
6259                  */
6260                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6261                 break;
6262         default:
6263                 return -EOPNOTSUPP;
6264         }
6265
6266         /* be aware of params.vlan when changing code here */
6267
6268         err = rdev_add_station(rdev, dev, mac_addr, &params);
6269
6270         if (params.vlan)
6271                 dev_put(params.vlan);
6272         return err;
6273 }
6274
6275 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6276 {
6277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6278         struct net_device *dev = info->user_ptr[1];
6279         struct station_del_parameters params;
6280
6281         memset(&params, 0, sizeof(params));
6282
6283         if (info->attrs[NL80211_ATTR_MAC])
6284                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6285
6286         switch (dev->ieee80211_ptr->iftype) {
6287         case NL80211_IFTYPE_AP:
6288         case NL80211_IFTYPE_AP_VLAN:
6289         case NL80211_IFTYPE_MESH_POINT:
6290         case NL80211_IFTYPE_P2P_GO:
6291                 /* always accept these */
6292                 break;
6293         case NL80211_IFTYPE_ADHOC:
6294                 /* conditionally accept */
6295                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6296                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6297                         break;
6298                 return -EINVAL;
6299         default:
6300                 return -EINVAL;
6301         }
6302
6303         if (!rdev->ops->del_station)
6304                 return -EOPNOTSUPP;
6305
6306         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6307                 params.subtype =
6308                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6309                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6310                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6311                         return -EINVAL;
6312         } else {
6313                 /* Default to Deauthentication frame */
6314                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6315         }
6316
6317         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6318                 params.reason_code =
6319                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6320                 if (params.reason_code == 0)
6321                         return -EINVAL; /* 0 is reserved */
6322         } else {
6323                 /* Default to reason code 2 */
6324                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6325         }
6326
6327         return rdev_del_station(rdev, dev, &params);
6328 }
6329
6330 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6331                                 int flags, struct net_device *dev,
6332                                 u8 *dst, u8 *next_hop,
6333                                 struct mpath_info *pinfo)
6334 {
6335         void *hdr;
6336         struct nlattr *pinfoattr;
6337
6338         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6339         if (!hdr)
6340                 return -1;
6341
6342         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6343             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6344             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6345             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6346                 goto nla_put_failure;
6347
6348         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6349         if (!pinfoattr)
6350                 goto nla_put_failure;
6351         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6352             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6353                         pinfo->frame_qlen))
6354                 goto nla_put_failure;
6355         if (((pinfo->filled & MPATH_INFO_SN) &&
6356              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6357             ((pinfo->filled & MPATH_INFO_METRIC) &&
6358              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6359                          pinfo->metric)) ||
6360             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6361              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6362                          pinfo->exptime)) ||
6363             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6364              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6365                         pinfo->flags)) ||
6366             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6367              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6368                          pinfo->discovery_timeout)) ||
6369             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6370              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6371                         pinfo->discovery_retries)) ||
6372             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6373              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6374                         pinfo->hop_count)) ||
6375             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6376              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6377                          pinfo->path_change_count)))
6378                 goto nla_put_failure;
6379
6380         nla_nest_end(msg, pinfoattr);
6381
6382         genlmsg_end(msg, hdr);
6383         return 0;
6384
6385  nla_put_failure:
6386         genlmsg_cancel(msg, hdr);
6387         return -EMSGSIZE;
6388 }
6389
6390 static int nl80211_dump_mpath(struct sk_buff *skb,
6391                               struct netlink_callback *cb)
6392 {
6393         struct mpath_info pinfo;
6394         struct cfg80211_registered_device *rdev;
6395         struct wireless_dev *wdev;
6396         u8 dst[ETH_ALEN];
6397         u8 next_hop[ETH_ALEN];
6398         int path_idx = cb->args[2];
6399         int err;
6400
6401         rtnl_lock();
6402         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6403         if (err)
6404                 goto out_err;
6405
6406         if (!rdev->ops->dump_mpath) {
6407                 err = -EOPNOTSUPP;
6408                 goto out_err;
6409         }
6410
6411         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6412                 err = -EOPNOTSUPP;
6413                 goto out_err;
6414         }
6415
6416         while (1) {
6417                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6418                                       next_hop, &pinfo);
6419                 if (err == -ENOENT)
6420                         break;
6421                 if (err)
6422                         goto out_err;
6423
6424                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6425                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6426                                        wdev->netdev, dst, next_hop,
6427                                        &pinfo) < 0)
6428                         goto out;
6429
6430                 path_idx++;
6431         }
6432
6433  out:
6434         cb->args[2] = path_idx;
6435         err = skb->len;
6436  out_err:
6437         rtnl_unlock();
6438         return err;
6439 }
6440
6441 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6442 {
6443         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6444         int err;
6445         struct net_device *dev = info->user_ptr[1];
6446         struct mpath_info pinfo;
6447         struct sk_buff *msg;
6448         u8 *dst = NULL;
6449         u8 next_hop[ETH_ALEN];
6450
6451         memset(&pinfo, 0, sizeof(pinfo));
6452
6453         if (!info->attrs[NL80211_ATTR_MAC])
6454                 return -EINVAL;
6455
6456         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6457
6458         if (!rdev->ops->get_mpath)
6459                 return -EOPNOTSUPP;
6460
6461         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6462                 return -EOPNOTSUPP;
6463
6464         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6465         if (err)
6466                 return err;
6467
6468         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6469         if (!msg)
6470                 return -ENOMEM;
6471
6472         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6473                                  dev, dst, next_hop, &pinfo) < 0) {
6474                 nlmsg_free(msg);
6475                 return -ENOBUFS;
6476         }
6477
6478         return genlmsg_reply(msg, info);
6479 }
6480
6481 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6482 {
6483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6484         struct net_device *dev = info->user_ptr[1];
6485         u8 *dst = NULL;
6486         u8 *next_hop = NULL;
6487
6488         if (!info->attrs[NL80211_ATTR_MAC])
6489                 return -EINVAL;
6490
6491         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6492                 return -EINVAL;
6493
6494         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6495         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6496
6497         if (!rdev->ops->change_mpath)
6498                 return -EOPNOTSUPP;
6499
6500         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6501                 return -EOPNOTSUPP;
6502
6503         return rdev_change_mpath(rdev, dev, dst, next_hop);
6504 }
6505
6506 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6507 {
6508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6509         struct net_device *dev = info->user_ptr[1];
6510         u8 *dst = NULL;
6511         u8 *next_hop = NULL;
6512
6513         if (!info->attrs[NL80211_ATTR_MAC])
6514                 return -EINVAL;
6515
6516         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6517                 return -EINVAL;
6518
6519         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6520         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6521
6522         if (!rdev->ops->add_mpath)
6523                 return -EOPNOTSUPP;
6524
6525         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6526                 return -EOPNOTSUPP;
6527
6528         return rdev_add_mpath(rdev, dev, dst, next_hop);
6529 }
6530
6531 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6532 {
6533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6534         struct net_device *dev = info->user_ptr[1];
6535         u8 *dst = NULL;
6536
6537         if (info->attrs[NL80211_ATTR_MAC])
6538                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6539
6540         if (!rdev->ops->del_mpath)
6541                 return -EOPNOTSUPP;
6542
6543         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6544                 return -EOPNOTSUPP;
6545
6546         return rdev_del_mpath(rdev, dev, dst);
6547 }
6548
6549 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6550 {
6551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6552         int err;
6553         struct net_device *dev = info->user_ptr[1];
6554         struct mpath_info pinfo;
6555         struct sk_buff *msg;
6556         u8 *dst = NULL;
6557         u8 mpp[ETH_ALEN];
6558
6559         memset(&pinfo, 0, sizeof(pinfo));
6560
6561         if (!info->attrs[NL80211_ATTR_MAC])
6562                 return -EINVAL;
6563
6564         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6565
6566         if (!rdev->ops->get_mpp)
6567                 return -EOPNOTSUPP;
6568
6569         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6570                 return -EOPNOTSUPP;
6571
6572         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6573         if (err)
6574                 return err;
6575
6576         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6577         if (!msg)
6578                 return -ENOMEM;
6579
6580         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6581                                dev, dst, mpp, &pinfo) < 0) {
6582                 nlmsg_free(msg);
6583                 return -ENOBUFS;
6584         }
6585
6586         return genlmsg_reply(msg, info);
6587 }
6588
6589 static int nl80211_dump_mpp(struct sk_buff *skb,
6590                             struct netlink_callback *cb)
6591 {
6592         struct mpath_info pinfo;
6593         struct cfg80211_registered_device *rdev;
6594         struct wireless_dev *wdev;
6595         u8 dst[ETH_ALEN];
6596         u8 mpp[ETH_ALEN];
6597         int path_idx = cb->args[2];
6598         int err;
6599
6600         rtnl_lock();
6601         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6602         if (err)
6603                 goto out_err;
6604
6605         if (!rdev->ops->dump_mpp) {
6606                 err = -EOPNOTSUPP;
6607                 goto out_err;
6608         }
6609
6610         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6611                 err = -EOPNOTSUPP;
6612                 goto out_err;
6613         }
6614
6615         while (1) {
6616                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6617                                     mpp, &pinfo);
6618                 if (err == -ENOENT)
6619                         break;
6620                 if (err)
6621                         goto out_err;
6622
6623                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6624                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6625                                        wdev->netdev, dst, mpp,
6626                                        &pinfo) < 0)
6627                         goto out;
6628
6629                 path_idx++;
6630         }
6631
6632  out:
6633         cb->args[2] = path_idx;
6634         err = skb->len;
6635  out_err:
6636         rtnl_unlock();
6637         return err;
6638 }
6639
6640 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6641 {
6642         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6643         struct net_device *dev = info->user_ptr[1];
6644         struct wireless_dev *wdev = dev->ieee80211_ptr;
6645         struct bss_parameters params;
6646         int err;
6647
6648         memset(&params, 0, sizeof(params));
6649         /* default to not changing parameters */
6650         params.use_cts_prot = -1;
6651         params.use_short_preamble = -1;
6652         params.use_short_slot_time = -1;
6653         params.ap_isolate = -1;
6654         params.ht_opmode = -1;
6655         params.p2p_ctwindow = -1;
6656         params.p2p_opp_ps = -1;
6657
6658         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6659                 params.use_cts_prot =
6660                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6661         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6662                 params.use_short_preamble =
6663                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6664         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6665                 params.use_short_slot_time =
6666                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6667         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6668                 params.basic_rates =
6669                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6670                 params.basic_rates_len =
6671                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6672         }
6673         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6674                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6675         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6676                 params.ht_opmode =
6677                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6678
6679         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6680                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6681                         return -EINVAL;
6682                 params.p2p_ctwindow =
6683                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6684                 if (params.p2p_ctwindow != 0 &&
6685                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6686                         return -EINVAL;
6687         }
6688
6689         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6690                 u8 tmp;
6691
6692                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6693                         return -EINVAL;
6694                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6695                 params.p2p_opp_ps = tmp;
6696                 if (params.p2p_opp_ps &&
6697                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6698                         return -EINVAL;
6699         }
6700
6701         if (!rdev->ops->change_bss)
6702                 return -EOPNOTSUPP;
6703
6704         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6705             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6706                 return -EOPNOTSUPP;
6707
6708         wdev_lock(wdev);
6709         err = rdev_change_bss(rdev, dev, &params);
6710         wdev_unlock(wdev);
6711
6712         return err;
6713 }
6714
6715 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6716 {
6717         char *data = NULL;
6718         bool is_indoor;
6719         enum nl80211_user_reg_hint_type user_reg_hint_type;
6720         u32 owner_nlportid;
6721
6722         /*
6723          * You should only get this when cfg80211 hasn't yet initialized
6724          * completely when built-in to the kernel right between the time
6725          * window between nl80211_init() and regulatory_init(), if that is
6726          * even possible.
6727          */
6728         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6729                 return -EINPROGRESS;
6730
6731         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6732                 user_reg_hint_type =
6733                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6734         else
6735                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6736
6737         switch (user_reg_hint_type) {
6738         case NL80211_USER_REG_HINT_USER:
6739         case NL80211_USER_REG_HINT_CELL_BASE:
6740                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6741                         return -EINVAL;
6742
6743                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6744                 return regulatory_hint_user(data, user_reg_hint_type);
6745         case NL80211_USER_REG_HINT_INDOOR:
6746                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6747                         owner_nlportid = info->snd_portid;
6748                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6749                 } else {
6750                         owner_nlportid = 0;
6751                         is_indoor = true;
6752                 }
6753
6754                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6755         default:
6756                 return -EINVAL;
6757         }
6758 }
6759
6760 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6761 {
6762         return reg_reload_regdb();
6763 }
6764
6765 static int nl80211_get_mesh_config(struct sk_buff *skb,
6766                                    struct genl_info *info)
6767 {
6768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6769         struct net_device *dev = info->user_ptr[1];
6770         struct wireless_dev *wdev = dev->ieee80211_ptr;
6771         struct mesh_config cur_params;
6772         int err = 0;
6773         void *hdr;
6774         struct nlattr *pinfoattr;
6775         struct sk_buff *msg;
6776
6777         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6778                 return -EOPNOTSUPP;
6779
6780         if (!rdev->ops->get_mesh_config)
6781                 return -EOPNOTSUPP;
6782
6783         wdev_lock(wdev);
6784         /* If not connected, get default parameters */
6785         if (!wdev->mesh_id_len)
6786                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6787         else
6788                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6789         wdev_unlock(wdev);
6790
6791         if (err)
6792                 return err;
6793
6794         /* Draw up a netlink message to send back */
6795         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6796         if (!msg)
6797                 return -ENOMEM;
6798         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6799                              NL80211_CMD_GET_MESH_CONFIG);
6800         if (!hdr)
6801                 goto out;
6802         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6803         if (!pinfoattr)
6804                 goto nla_put_failure;
6805         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6806             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6807                         cur_params.dot11MeshRetryTimeout) ||
6808             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6809                         cur_params.dot11MeshConfirmTimeout) ||
6810             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6811                         cur_params.dot11MeshHoldingTimeout) ||
6812             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6813                         cur_params.dot11MeshMaxPeerLinks) ||
6814             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6815                        cur_params.dot11MeshMaxRetries) ||
6816             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6817                        cur_params.dot11MeshTTL) ||
6818             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6819                        cur_params.element_ttl) ||
6820             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6821                        cur_params.auto_open_plinks) ||
6822             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6823                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6824             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6825                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6826             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6827                         cur_params.path_refresh_time) ||
6828             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6829                         cur_params.min_discovery_timeout) ||
6830             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6831                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6832             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6833                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6834             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6835                         cur_params.dot11MeshHWMPperrMinInterval) ||
6836             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6837                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6838             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6839                        cur_params.dot11MeshHWMPRootMode) ||
6840             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6841                         cur_params.dot11MeshHWMPRannInterval) ||
6842             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6843                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6844             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6845                        cur_params.dot11MeshForwarding) ||
6846             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6847                         cur_params.rssi_threshold) ||
6848             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6849                         cur_params.ht_opmode) ||
6850             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6851                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6852             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6853                         cur_params.dot11MeshHWMProotInterval) ||
6854             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6855                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6856             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6857                         cur_params.power_mode) ||
6858             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6859                         cur_params.dot11MeshAwakeWindowDuration) ||
6860             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6861                         cur_params.plink_timeout) ||
6862             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6863                        cur_params.dot11MeshConnectedToMeshGate))
6864                 goto nla_put_failure;
6865         nla_nest_end(msg, pinfoattr);
6866         genlmsg_end(msg, hdr);
6867         return genlmsg_reply(msg, info);
6868
6869  nla_put_failure:
6870  out:
6871         nlmsg_free(msg);
6872         return -ENOBUFS;
6873 }
6874
6875 static const struct nla_policy
6876 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6877         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6878                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6879         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6880                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6881         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6882                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6883         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6884                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6885         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6886         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6887         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6888         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6889         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6890                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6891         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6892         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6893         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6894         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6895         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6896                 NLA_POLICY_MIN(NLA_U16, 1),
6897         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6898                 NLA_POLICY_MIN(NLA_U16, 1),
6899         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6900                 NLA_POLICY_MIN(NLA_U16, 1),
6901         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6902         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6903                 NLA_POLICY_MIN(NLA_U16, 1),
6904         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6905         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6906         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6907                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6908         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6909         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6910         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6911                 NLA_POLICY_MIN(NLA_U16, 1),
6912         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6913                 NLA_POLICY_MIN(NLA_U16, 1),
6914         [NL80211_MESHCONF_POWER_MODE] =
6915                 NLA_POLICY_RANGE(NLA_U32,
6916                                  NL80211_MESH_POWER_ACTIVE,
6917                                  NL80211_MESH_POWER_MAX),
6918         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6919         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6920         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6921 };
6922
6923 static const struct nla_policy
6924         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6925         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6926         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6927         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6928         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6929         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6930         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6931         [NL80211_MESH_SETUP_IE] =
6932                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6933                                        IEEE80211_MAX_DATA_LEN),
6934         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6935 };
6936
6937 static int nl80211_parse_mesh_config(struct genl_info *info,
6938                                      struct mesh_config *cfg,
6939                                      u32 *mask_out)
6940 {
6941         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6942         u32 mask = 0;
6943         u16 ht_opmode;
6944
6945 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6946 do {                                                                    \
6947         if (tb[attr]) {                                                 \
6948                 cfg->param = fn(tb[attr]);                              \
6949                 mask |= BIT((attr) - 1);                                \
6950         }                                                               \
6951 } while (0)
6952
6953         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6954                 return -EINVAL;
6955         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6956                 return -EINVAL;
6957
6958         /* This makes sure that there aren't more than 32 mesh config
6959          * parameters (otherwise our bitfield scheme would not work.) */
6960         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6961
6962         /* Fill in the params struct */
6963         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6964                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6965         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6966                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6967                                   nla_get_u16);
6968         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6969                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6970                                   nla_get_u16);
6971         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6972                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6973                                   nla_get_u16);
6974         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6975                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6976         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6977                                   NL80211_MESHCONF_TTL, nla_get_u8);
6978         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6979                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6980         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6981                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6982                                   nla_get_u8);
6983         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6984                                   mask,
6985                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6986                                   nla_get_u32);
6987         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6988                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6989                                   nla_get_u8);
6990         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6991                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6992                                   nla_get_u32);
6993         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6994             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6995                 return -EINVAL;
6996         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6997                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6998                                   nla_get_u16);
6999         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7000                                   mask,
7001                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7002                                   nla_get_u32);
7003         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7004             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7005              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7006                 return -EINVAL;
7007         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7008                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7009                                   nla_get_u16);
7010         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7011                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7012                                   nla_get_u16);
7013         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7014                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7015                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7016                                   nla_get_u16);
7017         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7018                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7019         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7020                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7021                                   nla_get_u16);
7022         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7023                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7024                                   nla_get_u8);
7025         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7026                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7027         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7028                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7029                                   nla_get_s32);
7030         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7031                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7032                                   nla_get_u8);
7033         /*
7034          * Check HT operation mode based on
7035          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7036          */
7037         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7038                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7039
7040                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7041                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7042                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7043                         return -EINVAL;
7044
7045                 /* NON_HT_STA bit is reserved, but some programs set it */
7046                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7047
7048                 cfg->ht_opmode = ht_opmode;
7049                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7050         }
7051         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7052                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7053                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7054                                   nla_get_u32);
7055         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7056             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7057              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7058                 return -EINVAL;
7059         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7060                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7061                                   nla_get_u16);
7062         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7063                                   mask,
7064                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7065                                   nla_get_u16);
7066         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7067                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7068         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7069                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7070         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7071                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7072         if (mask_out)
7073                 *mask_out = mask;
7074
7075         return 0;
7076
7077 #undef FILL_IN_MESH_PARAM_IF_SET
7078 }
7079
7080 static int nl80211_parse_mesh_setup(struct genl_info *info,
7081                                      struct mesh_setup *setup)
7082 {
7083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7084         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7085
7086         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7087                 return -EINVAL;
7088         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7089                 return -EINVAL;
7090
7091         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7092                 setup->sync_method =
7093                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7094                  IEEE80211_SYNC_METHOD_VENDOR :
7095                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7096
7097         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7098                 setup->path_sel_proto =
7099                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7100                  IEEE80211_PATH_PROTOCOL_VENDOR :
7101                  IEEE80211_PATH_PROTOCOL_HWMP;
7102
7103         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7104                 setup->path_metric =
7105                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7106                  IEEE80211_PATH_METRIC_VENDOR :
7107                  IEEE80211_PATH_METRIC_AIRTIME;
7108
7109         if (tb[NL80211_MESH_SETUP_IE]) {
7110                 struct nlattr *ieattr =
7111                         tb[NL80211_MESH_SETUP_IE];
7112                 setup->ie = nla_data(ieattr);
7113                 setup->ie_len = nla_len(ieattr);
7114         }
7115         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7116             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7117                 return -EINVAL;
7118         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7119         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7120         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7121         if (setup->is_secure)
7122                 setup->user_mpm = true;
7123
7124         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7125                 if (!setup->user_mpm)
7126                         return -EINVAL;
7127                 setup->auth_id =
7128                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7129         }
7130
7131         return 0;
7132 }
7133
7134 static int nl80211_update_mesh_config(struct sk_buff *skb,
7135                                       struct genl_info *info)
7136 {
7137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7138         struct net_device *dev = info->user_ptr[1];
7139         struct wireless_dev *wdev = dev->ieee80211_ptr;
7140         struct mesh_config cfg;
7141         u32 mask;
7142         int err;
7143
7144         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7145                 return -EOPNOTSUPP;
7146
7147         if (!rdev->ops->update_mesh_config)
7148                 return -EOPNOTSUPP;
7149
7150         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7151         if (err)
7152                 return err;
7153
7154         wdev_lock(wdev);
7155         if (!wdev->mesh_id_len)
7156                 err = -ENOLINK;
7157
7158         if (!err)
7159                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7160
7161         wdev_unlock(wdev);
7162
7163         return err;
7164 }
7165
7166 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7167                               struct sk_buff *msg)
7168 {
7169         struct nlattr *nl_reg_rules;
7170         unsigned int i;
7171
7172         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7173             (regdom->dfs_region &&
7174              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7175                 goto nla_put_failure;
7176
7177         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7178         if (!nl_reg_rules)
7179                 goto nla_put_failure;
7180
7181         for (i = 0; i < regdom->n_reg_rules; i++) {
7182                 struct nlattr *nl_reg_rule;
7183                 const struct ieee80211_reg_rule *reg_rule;
7184                 const struct ieee80211_freq_range *freq_range;
7185                 const struct ieee80211_power_rule *power_rule;
7186                 unsigned int max_bandwidth_khz;
7187
7188                 reg_rule = &regdom->reg_rules[i];
7189                 freq_range = &reg_rule->freq_range;
7190                 power_rule = &reg_rule->power_rule;
7191
7192                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7193                 if (!nl_reg_rule)
7194                         goto nla_put_failure;
7195
7196                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7197                 if (!max_bandwidth_khz)
7198                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7199                                                                   reg_rule);
7200
7201                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7202                                 reg_rule->flags) ||
7203                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7204                                 freq_range->start_freq_khz) ||
7205                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7206                                 freq_range->end_freq_khz) ||
7207                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7208                                 max_bandwidth_khz) ||
7209                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7210                                 power_rule->max_antenna_gain) ||
7211                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7212                                 power_rule->max_eirp) ||
7213                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7214                                 reg_rule->dfs_cac_ms))
7215                         goto nla_put_failure;
7216
7217                 nla_nest_end(msg, nl_reg_rule);
7218         }
7219
7220         nla_nest_end(msg, nl_reg_rules);
7221         return 0;
7222
7223 nla_put_failure:
7224         return -EMSGSIZE;
7225 }
7226
7227 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7228 {
7229         const struct ieee80211_regdomain *regdom = NULL;
7230         struct cfg80211_registered_device *rdev;
7231         struct wiphy *wiphy = NULL;
7232         struct sk_buff *msg;
7233         void *hdr;
7234
7235         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7236         if (!msg)
7237                 return -ENOBUFS;
7238
7239         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7240                              NL80211_CMD_GET_REG);
7241         if (!hdr)
7242                 goto put_failure;
7243
7244         if (info->attrs[NL80211_ATTR_WIPHY]) {
7245                 bool self_managed;
7246
7247                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7248                 if (IS_ERR(rdev)) {
7249                         nlmsg_free(msg);
7250                         return PTR_ERR(rdev);
7251                 }
7252
7253                 wiphy = &rdev->wiphy;
7254                 self_managed = wiphy->regulatory_flags &
7255                                REGULATORY_WIPHY_SELF_MANAGED;
7256                 regdom = get_wiphy_regdom(wiphy);
7257
7258                 /* a self-managed-reg device must have a private regdom */
7259                 if (WARN_ON(!regdom && self_managed)) {
7260                         nlmsg_free(msg);
7261                         return -EINVAL;
7262                 }
7263
7264                 if (regdom &&
7265                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7266                         goto nla_put_failure;
7267         }
7268
7269         if (!wiphy && reg_last_request_cell_base() &&
7270             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7271                         NL80211_USER_REG_HINT_CELL_BASE))
7272                 goto nla_put_failure;
7273
7274         rcu_read_lock();
7275
7276         if (!regdom)
7277                 regdom = rcu_dereference(cfg80211_regdomain);
7278
7279         if (nl80211_put_regdom(regdom, msg))
7280                 goto nla_put_failure_rcu;
7281
7282         rcu_read_unlock();
7283
7284         genlmsg_end(msg, hdr);
7285         return genlmsg_reply(msg, info);
7286
7287 nla_put_failure_rcu:
7288         rcu_read_unlock();
7289 nla_put_failure:
7290 put_failure:
7291         nlmsg_free(msg);
7292         return -EMSGSIZE;
7293 }
7294
7295 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7296                                u32 seq, int flags, struct wiphy *wiphy,
7297                                const struct ieee80211_regdomain *regdom)
7298 {
7299         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7300                                    NL80211_CMD_GET_REG);
7301
7302         if (!hdr)
7303                 return -1;
7304
7305         genl_dump_check_consistent(cb, hdr);
7306
7307         if (nl80211_put_regdom(regdom, msg))
7308                 goto nla_put_failure;
7309
7310         if (!wiphy && reg_last_request_cell_base() &&
7311             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7312                         NL80211_USER_REG_HINT_CELL_BASE))
7313                 goto nla_put_failure;
7314
7315         if (wiphy &&
7316             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7317                 goto nla_put_failure;
7318
7319         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7320             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7321                 goto nla_put_failure;
7322
7323         genlmsg_end(msg, hdr);
7324         return 0;
7325
7326 nla_put_failure:
7327         genlmsg_cancel(msg, hdr);
7328         return -EMSGSIZE;
7329 }
7330
7331 static int nl80211_get_reg_dump(struct sk_buff *skb,
7332                                 struct netlink_callback *cb)
7333 {
7334         const struct ieee80211_regdomain *regdom = NULL;
7335         struct cfg80211_registered_device *rdev;
7336         int err, reg_idx, start = cb->args[2];
7337
7338         rtnl_lock();
7339
7340         if (cfg80211_regdomain && start == 0) {
7341                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7342                                           NLM_F_MULTI, NULL,
7343                                           rtnl_dereference(cfg80211_regdomain));
7344                 if (err < 0)
7345                         goto out_err;
7346         }
7347
7348         /* the global regdom is idx 0 */
7349         reg_idx = 1;
7350         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7351                 regdom = get_wiphy_regdom(&rdev->wiphy);
7352                 if (!regdom)
7353                         continue;
7354
7355                 if (++reg_idx <= start)
7356                         continue;
7357
7358                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7359                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7360                 if (err < 0) {
7361                         reg_idx--;
7362                         break;
7363                 }
7364         }
7365
7366         cb->args[2] = reg_idx;
7367         err = skb->len;
7368 out_err:
7369         rtnl_unlock();
7370         return err;
7371 }
7372
7373 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7374 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7375         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7376         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7377         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7378         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7379         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7380         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7381         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7382 };
7383
7384 static int parse_reg_rule(struct nlattr *tb[],
7385         struct ieee80211_reg_rule *reg_rule)
7386 {
7387         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7388         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7389
7390         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7391                 return -EINVAL;
7392         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7393                 return -EINVAL;
7394         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7395                 return -EINVAL;
7396         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7397                 return -EINVAL;
7398         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7399                 return -EINVAL;
7400
7401         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7402
7403         freq_range->start_freq_khz =
7404                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7405         freq_range->end_freq_khz =
7406                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7407         freq_range->max_bandwidth_khz =
7408                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7409
7410         power_rule->max_eirp =
7411                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7412
7413         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7414                 power_rule->max_antenna_gain =
7415                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7416
7417         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7418                 reg_rule->dfs_cac_ms =
7419                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7420
7421         return 0;
7422 }
7423
7424 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7425 {
7426         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7427         struct nlattr *nl_reg_rule;
7428         char *alpha2;
7429         int rem_reg_rules, r;
7430         u32 num_rules = 0, rule_idx = 0;
7431         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7432         struct ieee80211_regdomain *rd;
7433
7434         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7435                 return -EINVAL;
7436
7437         if (!info->attrs[NL80211_ATTR_REG_RULES])
7438                 return -EINVAL;
7439
7440         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7441
7442         if (info->attrs[NL80211_ATTR_DFS_REGION])
7443                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7444
7445         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7446                             rem_reg_rules) {
7447                 num_rules++;
7448                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7449                         return -EINVAL;
7450         }
7451
7452         if (!reg_is_valid_request(alpha2))
7453                 return -EINVAL;
7454
7455         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7456         if (!rd)
7457                 return -ENOMEM;
7458
7459         rd->n_reg_rules = num_rules;
7460         rd->alpha2[0] = alpha2[0];
7461         rd->alpha2[1] = alpha2[1];
7462
7463         /*
7464          * Disable DFS master mode if the DFS region was
7465          * not supported or known on this kernel.
7466          */
7467         if (reg_supported_dfs_region(dfs_region))
7468                 rd->dfs_region = dfs_region;
7469
7470         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7471                             rem_reg_rules) {
7472                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7473                                                 nl_reg_rule, reg_rule_policy,
7474                                                 info->extack);
7475                 if (r)
7476                         goto bad_reg;
7477                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7478                 if (r)
7479                         goto bad_reg;
7480
7481                 rule_idx++;
7482
7483                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7484                         r = -EINVAL;
7485                         goto bad_reg;
7486                 }
7487         }
7488
7489         /* set_regdom takes ownership of rd */
7490         return set_regdom(rd, REGD_SOURCE_CRDA);
7491  bad_reg:
7492         kfree(rd);
7493         return r;
7494 }
7495 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7496
7497 static int validate_scan_freqs(struct nlattr *freqs)
7498 {
7499         struct nlattr *attr1, *attr2;
7500         int n_channels = 0, tmp1, tmp2;
7501
7502         nla_for_each_nested(attr1, freqs, tmp1)
7503                 if (nla_len(attr1) != sizeof(u32))
7504                         return 0;
7505
7506         nla_for_each_nested(attr1, freqs, tmp1) {
7507                 n_channels++;
7508                 /*
7509                  * Some hardware has a limited channel list for
7510                  * scanning, and it is pretty much nonsensical
7511                  * to scan for a channel twice, so disallow that
7512                  * and don't require drivers to check that the
7513                  * channel list they get isn't longer than what
7514                  * they can scan, as long as they can scan all
7515                  * the channels they registered at once.
7516                  */
7517                 nla_for_each_nested(attr2, freqs, tmp2)
7518                         if (attr1 != attr2 &&
7519                             nla_get_u32(attr1) == nla_get_u32(attr2))
7520                                 return 0;
7521         }
7522
7523         return n_channels;
7524 }
7525
7526 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7527 {
7528         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7529 }
7530
7531 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7532                             struct cfg80211_bss_selection *bss_select)
7533 {
7534         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7535         struct nlattr *nest;
7536         int err;
7537         bool found = false;
7538         int i;
7539
7540         /* only process one nested attribute */
7541         nest = nla_data(nla);
7542         if (!nla_ok(nest, nla_len(nest)))
7543                 return -EINVAL;
7544
7545         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7546                                           nest, nl80211_bss_select_policy,
7547                                           NULL);
7548         if (err)
7549                 return err;
7550
7551         /* only one attribute may be given */
7552         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7553                 if (attr[i]) {
7554                         if (found)
7555                                 return -EINVAL;
7556                         found = true;
7557                 }
7558         }
7559
7560         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7561
7562         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7563                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7564
7565         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7566                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7567                 bss_select->param.band_pref =
7568                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7569                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7570                         return -EINVAL;
7571         }
7572
7573         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7574                 struct nl80211_bss_select_rssi_adjust *adj_param;
7575
7576                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7577                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7578                 bss_select->param.adjust.band = adj_param->band;
7579                 bss_select->param.adjust.delta = adj_param->delta;
7580                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7581                         return -EINVAL;
7582         }
7583
7584         /* user-space did not provide behaviour attribute */
7585         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7586                 return -EINVAL;
7587
7588         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7589                 return -EINVAL;
7590
7591         return 0;
7592 }
7593
7594 int nl80211_parse_random_mac(struct nlattr **attrs,
7595                              u8 *mac_addr, u8 *mac_addr_mask)
7596 {
7597         int i;
7598
7599         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7600                 eth_zero_addr(mac_addr);
7601                 eth_zero_addr(mac_addr_mask);
7602                 mac_addr[0] = 0x2;
7603                 mac_addr_mask[0] = 0x3;
7604
7605                 return 0;
7606         }
7607
7608         /* need both or none */
7609         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7610                 return -EINVAL;
7611
7612         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7613         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7614
7615         /* don't allow or configure an mcast address */
7616         if (!is_multicast_ether_addr(mac_addr_mask) ||
7617             is_multicast_ether_addr(mac_addr))
7618                 return -EINVAL;
7619
7620         /*
7621          * allow users to pass a MAC address that has bits set outside
7622          * of the mask, but don't bother drivers with having to deal
7623          * with such bits
7624          */
7625         for (i = 0; i < ETH_ALEN; i++)
7626                 mac_addr[i] &= mac_addr_mask[i];
7627
7628         return 0;
7629 }
7630
7631 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7632 {
7633         ASSERT_WDEV_LOCK(wdev);
7634
7635         if (!cfg80211_beaconing_iface_active(wdev))
7636                 return true;
7637
7638         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7639                 return true;
7640
7641         return regulatory_pre_cac_allowed(wdev->wiphy);
7642 }
7643
7644 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7645                                     enum nl80211_ext_feature_index feat)
7646 {
7647         if (!(flags & flag))
7648                 return true;
7649         if (wiphy_ext_feature_isset(wiphy, feat))
7650                 return true;
7651         return false;
7652 }
7653
7654 static int
7655 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7656                          void *request, struct nlattr **attrs,
7657                          bool is_sched_scan)
7658 {
7659         u8 *mac_addr, *mac_addr_mask;
7660         u32 *flags;
7661         enum nl80211_feature_flags randomness_flag;
7662
7663         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7664                 return 0;
7665
7666         if (is_sched_scan) {
7667                 struct cfg80211_sched_scan_request *req = request;
7668
7669                 randomness_flag = wdev ?
7670                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7671                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7672                 flags = &req->flags;
7673                 mac_addr = req->mac_addr;
7674                 mac_addr_mask = req->mac_addr_mask;
7675         } else {
7676                 struct cfg80211_scan_request *req = request;
7677
7678                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7679                 flags = &req->flags;
7680                 mac_addr = req->mac_addr;
7681                 mac_addr_mask = req->mac_addr_mask;
7682         }
7683
7684         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7685
7686         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7687              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7688             !nl80211_check_scan_feat(wiphy, *flags,
7689                                      NL80211_SCAN_FLAG_LOW_SPAN,
7690                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7691             !nl80211_check_scan_feat(wiphy, *flags,
7692                                      NL80211_SCAN_FLAG_LOW_POWER,
7693                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7694             !nl80211_check_scan_feat(wiphy, *flags,
7695                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7696                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7697             !nl80211_check_scan_feat(wiphy, *flags,
7698                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7699                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7700             !nl80211_check_scan_feat(wiphy, *flags,
7701                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7702                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7703             !nl80211_check_scan_feat(wiphy, *flags,
7704                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7705                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7706             !nl80211_check_scan_feat(wiphy, *flags,
7707                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7708                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7709             !nl80211_check_scan_feat(wiphy, *flags,
7710                                      NL80211_SCAN_FLAG_RANDOM_SN,
7711                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7712             !nl80211_check_scan_feat(wiphy, *flags,
7713                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7714                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7715                 return -EOPNOTSUPP;
7716
7717         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7718                 int err;
7719
7720                 if (!(wiphy->features & randomness_flag) ||
7721                     (wdev && wdev->current_bss))
7722                         return -EOPNOTSUPP;
7723
7724                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7725                 if (err)
7726                         return err;
7727         }
7728
7729         return 0;
7730 }
7731
7732 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7733 {
7734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7735         struct wireless_dev *wdev = info->user_ptr[1];
7736         struct cfg80211_scan_request *request;
7737         struct nlattr *attr;
7738         struct wiphy *wiphy;
7739         int err, tmp, n_ssids = 0, n_channels, i;
7740         size_t ie_len;
7741
7742         wiphy = &rdev->wiphy;
7743
7744         if (wdev->iftype == NL80211_IFTYPE_NAN)
7745                 return -EOPNOTSUPP;
7746
7747         if (!rdev->ops->scan)
7748                 return -EOPNOTSUPP;
7749
7750         if (rdev->scan_req || rdev->scan_msg) {
7751                 err = -EBUSY;
7752                 goto unlock;
7753         }
7754
7755         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7756                 n_channels = validate_scan_freqs(
7757                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7758                 if (!n_channels) {
7759                         err = -EINVAL;
7760                         goto unlock;
7761                 }
7762         } else {
7763                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7764         }
7765
7766         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7767                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7768                         n_ssids++;
7769
7770         if (n_ssids > wiphy->max_scan_ssids) {
7771                 err = -EINVAL;
7772                 goto unlock;
7773         }
7774
7775         if (info->attrs[NL80211_ATTR_IE])
7776                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7777         else
7778                 ie_len = 0;
7779
7780         if (ie_len > wiphy->max_scan_ie_len) {
7781                 err = -EINVAL;
7782                 goto unlock;
7783         }
7784
7785         request = kzalloc(sizeof(*request)
7786                         + sizeof(*request->ssids) * n_ssids
7787                         + sizeof(*request->channels) * n_channels
7788                         + ie_len, GFP_KERNEL);
7789         if (!request) {
7790                 err = -ENOMEM;
7791                 goto unlock;
7792         }
7793
7794         if (n_ssids)
7795                 request->ssids = (void *)&request->channels[n_channels];
7796         request->n_ssids = n_ssids;
7797         if (ie_len) {
7798                 if (n_ssids)
7799                         request->ie = (void *)(request->ssids + n_ssids);
7800                 else
7801                         request->ie = (void *)(request->channels + n_channels);
7802         }
7803
7804         i = 0;
7805         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7806                 /* user specified, bail out if channel not found */
7807                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7808                         struct ieee80211_channel *chan;
7809
7810                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7811
7812                         if (!chan) {
7813                                 err = -EINVAL;
7814                                 goto out_free;
7815                         }
7816
7817                         /* ignore disabled channels */
7818                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7819                                 continue;
7820
7821                         request->channels[i] = chan;
7822                         i++;
7823                 }
7824         } else {
7825                 enum nl80211_band band;
7826
7827                 /* all channels */
7828                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7829                         int j;
7830
7831                         if (!wiphy->bands[band])
7832                                 continue;
7833                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7834                                 struct ieee80211_channel *chan;
7835
7836                                 chan = &wiphy->bands[band]->channels[j];
7837
7838                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7839                                         continue;
7840
7841                                 request->channels[i] = chan;
7842                                 i++;
7843                         }
7844                 }
7845         }
7846
7847         if (!i) {
7848                 err = -EINVAL;
7849                 goto out_free;
7850         }
7851
7852         request->n_channels = i;
7853
7854         wdev_lock(wdev);
7855         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7856                 struct ieee80211_channel *chan;
7857
7858                 if (request->n_channels != 1) {
7859                         wdev_unlock(wdev);
7860                         err = -EBUSY;
7861                         goto out_free;
7862                 }
7863
7864                 chan = request->channels[0];
7865                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7866                         wdev_unlock(wdev);
7867                         err = -EBUSY;
7868                         goto out_free;
7869                 }
7870         }
7871         wdev_unlock(wdev);
7872
7873         i = 0;
7874         if (n_ssids) {
7875                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7876                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7877                                 err = -EINVAL;
7878                                 goto out_free;
7879                         }
7880                         request->ssids[i].ssid_len = nla_len(attr);
7881                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7882                         i++;
7883                 }
7884         }
7885
7886         if (info->attrs[NL80211_ATTR_IE]) {
7887                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7888                 memcpy((void *)request->ie,
7889                        nla_data(info->attrs[NL80211_ATTR_IE]),
7890                        request->ie_len);
7891         }
7892
7893         for (i = 0; i < NUM_NL80211_BANDS; i++)
7894                 if (wiphy->bands[i])
7895                         request->rates[i] =
7896                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7897
7898         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7899                 nla_for_each_nested(attr,
7900                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7901                                     tmp) {
7902                         enum nl80211_band band = nla_type(attr);
7903
7904                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7905                                 err = -EINVAL;
7906                                 goto out_free;
7907                         }
7908
7909                         if (!wiphy->bands[band])
7910                                 continue;
7911
7912                         err = ieee80211_get_ratemask(wiphy->bands[band],
7913                                                      nla_data(attr),
7914                                                      nla_len(attr),
7915                                                      &request->rates[band]);
7916                         if (err)
7917                                 goto out_free;
7918                 }
7919         }
7920
7921         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7922                 if (!wiphy_ext_feature_isset(wiphy,
7923                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7924                         err = -EOPNOTSUPP;
7925                         goto out_free;
7926                 }
7927
7928                 request->duration =
7929                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7930                 request->duration_mandatory =
7931                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7932         }
7933
7934         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7935                                        false);
7936         if (err)
7937                 goto out_free;
7938
7939         request->no_cck =
7940                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7941
7942         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7943          * BSSID to scan for. This was problematic because that same attribute
7944          * was already used for another purpose (local random MAC address). The
7945          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7946          * compatibility with older userspace components, also use the
7947          * NL80211_ATTR_MAC value here if it can be determined to be used for
7948          * the specific BSSID use case instead of the random MAC address
7949          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7950          */
7951         if (info->attrs[NL80211_ATTR_BSSID])
7952                 memcpy(request->bssid,
7953                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7954         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7955                  info->attrs[NL80211_ATTR_MAC])
7956                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7957                        ETH_ALEN);
7958         else
7959                 eth_broadcast_addr(request->bssid);
7960
7961         request->wdev = wdev;
7962         request->wiphy = &rdev->wiphy;
7963         request->scan_start = jiffies;
7964
7965         rdev->scan_req = request;
7966         err = rdev_scan(rdev, request);
7967
7968         if (!err) {
7969                 nl80211_send_scan_start(rdev, wdev);
7970                 if (wdev->netdev)
7971                         dev_hold(wdev->netdev);
7972         } else {
7973  out_free:
7974                 rdev->scan_req = NULL;
7975                 kfree(request);
7976         }
7977
7978  unlock:
7979         return err;
7980 }
7981
7982 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7983 {
7984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7985         struct wireless_dev *wdev = info->user_ptr[1];
7986
7987         if (!rdev->ops->abort_scan)
7988                 return -EOPNOTSUPP;
7989
7990         if (rdev->scan_msg)
7991                 return 0;
7992
7993         if (!rdev->scan_req)
7994                 return -ENOENT;
7995
7996         rdev_abort_scan(rdev, wdev);
7997         return 0;
7998 }
7999
8000 static int
8001 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8002                                struct cfg80211_sched_scan_request *request,
8003                                struct nlattr **attrs)
8004 {
8005         int tmp, err, i = 0;
8006         struct nlattr *attr;
8007
8008         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8009                 u32 interval;
8010
8011                 /*
8012                  * If scan plans are not specified,
8013                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8014                  * case one scan plan will be set with the specified scan
8015                  * interval and infinite number of iterations.
8016                  */
8017                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8018                 if (!interval)
8019                         return -EINVAL;
8020
8021                 request->scan_plans[0].interval =
8022                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8023                 if (!request->scan_plans[0].interval)
8024                         return -EINVAL;
8025
8026                 if (request->scan_plans[0].interval >
8027                     wiphy->max_sched_scan_plan_interval)
8028                         request->scan_plans[0].interval =
8029                                 wiphy->max_sched_scan_plan_interval;
8030
8031                 return 0;
8032         }
8033
8034         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8035                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8036
8037                 if (WARN_ON(i >= n_plans))
8038                         return -EINVAL;
8039
8040                 err = nla_parse_nested_deprecated(plan,
8041                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8042                                                   attr, nl80211_plan_policy,
8043                                                   NULL);
8044                 if (err)
8045                         return err;
8046
8047                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8048                         return -EINVAL;
8049
8050                 request->scan_plans[i].interval =
8051                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8052                 if (!request->scan_plans[i].interval ||
8053                     request->scan_plans[i].interval >
8054                     wiphy->max_sched_scan_plan_interval)
8055                         return -EINVAL;
8056
8057                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8058                         request->scan_plans[i].iterations =
8059                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8060                         if (!request->scan_plans[i].iterations ||
8061                             (request->scan_plans[i].iterations >
8062                              wiphy->max_sched_scan_plan_iterations))
8063                                 return -EINVAL;
8064                 } else if (i < n_plans - 1) {
8065                         /*
8066                          * All scan plans but the last one must specify
8067                          * a finite number of iterations
8068                          */
8069                         return -EINVAL;
8070                 }
8071
8072                 i++;
8073         }
8074
8075         /*
8076          * The last scan plan must not specify the number of
8077          * iterations, it is supposed to run infinitely
8078          */
8079         if (request->scan_plans[n_plans - 1].iterations)
8080                 return  -EINVAL;
8081
8082         return 0;
8083 }
8084
8085 static int
8086 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8087                                        struct cfg80211_match_set *match_sets,
8088                                        struct nlattr *tb_band_rssi,
8089                                        s32 rssi_thold)
8090 {
8091         struct nlattr *attr;
8092         int i, tmp, ret = 0;
8093
8094         if (!wiphy_ext_feature_isset(wiphy,
8095                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8096                 if (tb_band_rssi)
8097                         ret = -EOPNOTSUPP;
8098                 else
8099                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8100                                 match_sets->per_band_rssi_thold[i] =
8101                                         NL80211_SCAN_RSSI_THOLD_OFF;
8102                 return ret;
8103         }
8104
8105         for (i = 0; i < NUM_NL80211_BANDS; i++)
8106                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8107
8108         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8109                 enum nl80211_band band = nla_type(attr);
8110
8111                 if (band < 0 || band >= NUM_NL80211_BANDS)
8112                         return -EINVAL;
8113
8114                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8115         }
8116
8117         return 0;
8118 }
8119
8120 static struct cfg80211_sched_scan_request *
8121 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8122                          struct nlattr **attrs, int max_match_sets)
8123 {
8124         struct cfg80211_sched_scan_request *request;
8125         struct nlattr *attr;
8126         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8127         enum nl80211_band band;
8128         size_t ie_len;
8129         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8130         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8131
8132         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8133                 n_channels = validate_scan_freqs(
8134                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8135                 if (!n_channels)
8136                         return ERR_PTR(-EINVAL);
8137         } else {
8138                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8139         }
8140
8141         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8142                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8143                                     tmp)
8144                         n_ssids++;
8145
8146         if (n_ssids > wiphy->max_sched_scan_ssids)
8147                 return ERR_PTR(-EINVAL);
8148
8149         /*
8150          * First, count the number of 'real' matchsets. Due to an issue with
8151          * the old implementation, matchsets containing only the RSSI attribute
8152          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8153          * RSSI for all matchsets, rather than their own matchset for reporting
8154          * all APs with a strong RSSI. This is needed to be compatible with
8155          * older userspace that treated a matchset with only the RSSI as the
8156          * global RSSI for all other matchsets - if there are other matchsets.
8157          */
8158         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8159                 nla_for_each_nested(attr,
8160                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8161                                     tmp) {
8162                         struct nlattr *rssi;
8163
8164                         err = nla_parse_nested_deprecated(tb,
8165                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8166                                                           attr,
8167                                                           nl80211_match_policy,
8168                                                           NULL);
8169                         if (err)
8170                                 return ERR_PTR(err);
8171
8172                         /* SSID and BSSID are mutually exclusive */
8173                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8174                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8175                                 return ERR_PTR(-EINVAL);
8176
8177                         /* add other standalone attributes here */
8178                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8179                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8180                                 n_match_sets++;
8181                                 continue;
8182                         }
8183                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8184                         if (rssi)
8185                                 default_match_rssi = nla_get_s32(rssi);
8186                 }
8187         }
8188
8189         /* However, if there's no other matchset, add the RSSI one */
8190         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8191                 n_match_sets = 1;
8192
8193         if (n_match_sets > max_match_sets)
8194                 return ERR_PTR(-EINVAL);
8195
8196         if (attrs[NL80211_ATTR_IE])
8197                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8198         else
8199                 ie_len = 0;
8200
8201         if (ie_len > wiphy->max_sched_scan_ie_len)
8202                 return ERR_PTR(-EINVAL);
8203
8204         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8205                 /*
8206                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8207                  * each scan plan already specifies its own interval
8208                  */
8209                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8210                         return ERR_PTR(-EINVAL);
8211
8212                 nla_for_each_nested(attr,
8213                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8214                         n_plans++;
8215         } else {
8216                 /*
8217                  * The scan interval attribute is kept for backward
8218                  * compatibility. If no scan plans are specified and sched scan
8219                  * interval is specified, one scan plan will be set with this
8220                  * scan interval and infinite number of iterations.
8221                  */
8222                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8223                         return ERR_PTR(-EINVAL);
8224
8225                 n_plans = 1;
8226         }
8227
8228         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8229                 return ERR_PTR(-EINVAL);
8230
8231         if (!wiphy_ext_feature_isset(
8232                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8233             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8234              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8235                 return ERR_PTR(-EINVAL);
8236
8237         request = kzalloc(sizeof(*request)
8238                         + sizeof(*request->ssids) * n_ssids
8239                         + sizeof(*request->match_sets) * n_match_sets
8240                         + sizeof(*request->scan_plans) * n_plans
8241                         + sizeof(*request->channels) * n_channels
8242                         + ie_len, GFP_KERNEL);
8243         if (!request)
8244                 return ERR_PTR(-ENOMEM);
8245
8246         if (n_ssids)
8247                 request->ssids = (void *)&request->channels[n_channels];
8248         request->n_ssids = n_ssids;
8249         if (ie_len) {
8250                 if (n_ssids)
8251                         request->ie = (void *)(request->ssids + n_ssids);
8252                 else
8253                         request->ie = (void *)(request->channels + n_channels);
8254         }
8255
8256         if (n_match_sets) {
8257                 if (request->ie)
8258                         request->match_sets = (void *)(request->ie + ie_len);
8259                 else if (n_ssids)
8260                         request->match_sets =
8261                                 (void *)(request->ssids + n_ssids);
8262                 else
8263                         request->match_sets =
8264                                 (void *)(request->channels + n_channels);
8265         }
8266         request->n_match_sets = n_match_sets;
8267
8268         if (n_match_sets)
8269                 request->scan_plans = (void *)(request->match_sets +
8270                                                n_match_sets);
8271         else if (request->ie)
8272                 request->scan_plans = (void *)(request->ie + ie_len);
8273         else if (n_ssids)
8274                 request->scan_plans = (void *)(request->ssids + n_ssids);
8275         else
8276                 request->scan_plans = (void *)(request->channels + n_channels);
8277
8278         request->n_scan_plans = n_plans;
8279
8280         i = 0;
8281         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8282                 /* user specified, bail out if channel not found */
8283                 nla_for_each_nested(attr,
8284                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8285                                     tmp) {
8286                         struct ieee80211_channel *chan;
8287
8288                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8289
8290                         if (!chan) {
8291                                 err = -EINVAL;
8292                                 goto out_free;
8293                         }
8294
8295                         /* ignore disabled channels */
8296                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8297                                 continue;
8298
8299                         request->channels[i] = chan;
8300                         i++;
8301                 }
8302         } else {
8303                 /* all channels */
8304                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8305                         int j;
8306
8307                         if (!wiphy->bands[band])
8308                                 continue;
8309                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8310                                 struct ieee80211_channel *chan;
8311
8312                                 chan = &wiphy->bands[band]->channels[j];
8313
8314                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8315                                         continue;
8316
8317                                 request->channels[i] = chan;
8318                                 i++;
8319                         }
8320                 }
8321         }
8322
8323         if (!i) {
8324                 err = -EINVAL;
8325                 goto out_free;
8326         }
8327
8328         request->n_channels = i;
8329
8330         i = 0;
8331         if (n_ssids) {
8332                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8333                                     tmp) {
8334                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8335                                 err = -EINVAL;
8336                                 goto out_free;
8337                         }
8338                         request->ssids[i].ssid_len = nla_len(attr);
8339                         memcpy(request->ssids[i].ssid, nla_data(attr),
8340                                nla_len(attr));
8341                         i++;
8342                 }
8343         }
8344
8345         i = 0;
8346         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8347                 nla_for_each_nested(attr,
8348                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8349                                     tmp) {
8350                         struct nlattr *ssid, *bssid, *rssi;
8351
8352                         err = nla_parse_nested_deprecated(tb,
8353                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8354                                                           attr,
8355                                                           nl80211_match_policy,
8356                                                           NULL);
8357                         if (err)
8358                                 goto out_free;
8359                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8360                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8361
8362                         if (!ssid && !bssid) {
8363                                 i++;
8364                                 continue;
8365                         }
8366
8367                         if (WARN_ON(i >= n_match_sets)) {
8368                                 /* this indicates a programming error,
8369                                  * the loop above should have verified
8370                                  * things properly
8371                                  */
8372                                 err = -EINVAL;
8373                                 goto out_free;
8374                         }
8375
8376                         if (ssid) {
8377                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8378                                         err = -EINVAL;
8379                                         goto out_free;
8380                                 }
8381                                 memcpy(request->match_sets[i].ssid.ssid,
8382                                        nla_data(ssid), nla_len(ssid));
8383                                 request->match_sets[i].ssid.ssid_len =
8384                                         nla_len(ssid);
8385                         }
8386                         if (bssid) {
8387                                 if (nla_len(bssid) != ETH_ALEN) {
8388                                         err = -EINVAL;
8389                                         goto out_free;
8390                                 }
8391                                 memcpy(request->match_sets[i].bssid,
8392                                        nla_data(bssid), ETH_ALEN);
8393                         }
8394
8395                         /* special attribute - old implementation w/a */
8396                         request->match_sets[i].rssi_thold = default_match_rssi;
8397                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8398                         if (rssi)
8399                                 request->match_sets[i].rssi_thold =
8400                                         nla_get_s32(rssi);
8401
8402                         /* Parse per band RSSI attribute */
8403                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8404                                 &request->match_sets[i],
8405                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8406                                 request->match_sets[i].rssi_thold);
8407                         if (err)
8408                                 goto out_free;
8409
8410                         i++;
8411                 }
8412
8413                 /* there was no other matchset, so the RSSI one is alone */
8414                 if (i == 0 && n_match_sets)
8415                         request->match_sets[0].rssi_thold = default_match_rssi;
8416
8417                 request->min_rssi_thold = INT_MAX;
8418                 for (i = 0; i < n_match_sets; i++)
8419                         request->min_rssi_thold =
8420                                 min(request->match_sets[i].rssi_thold,
8421                                     request->min_rssi_thold);
8422         } else {
8423                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8424         }
8425
8426         if (ie_len) {
8427                 request->ie_len = ie_len;
8428                 memcpy((void *)request->ie,
8429                        nla_data(attrs[NL80211_ATTR_IE]),
8430                        request->ie_len);
8431         }
8432
8433         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8434         if (err)
8435                 goto out_free;
8436
8437         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8438                 request->delay =
8439                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8440
8441         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8442                 request->relative_rssi = nla_get_s8(
8443                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8444                 request->relative_rssi_set = true;
8445         }
8446
8447         if (request->relative_rssi_set &&
8448             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8449                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8450
8451                 rssi_adjust = nla_data(
8452                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8453                 request->rssi_adjust.band = rssi_adjust->band;
8454                 request->rssi_adjust.delta = rssi_adjust->delta;
8455                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8456                         err = -EINVAL;
8457                         goto out_free;
8458                 }
8459         }
8460
8461         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8462         if (err)
8463                 goto out_free;
8464
8465         request->scan_start = jiffies;
8466
8467         return request;
8468
8469 out_free:
8470         kfree(request);
8471         return ERR_PTR(err);
8472 }
8473
8474 static int nl80211_start_sched_scan(struct sk_buff *skb,
8475                                     struct genl_info *info)
8476 {
8477         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8478         struct net_device *dev = info->user_ptr[1];
8479         struct wireless_dev *wdev = dev->ieee80211_ptr;
8480         struct cfg80211_sched_scan_request *sched_scan_req;
8481         bool want_multi;
8482         int err;
8483
8484         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8485                 return -EOPNOTSUPP;
8486
8487         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8488         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8489         if (err)
8490                 return err;
8491
8492         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8493                                                   info->attrs,
8494                                                   rdev->wiphy.max_match_sets);
8495
8496         err = PTR_ERR_OR_ZERO(sched_scan_req);
8497         if (err)
8498                 goto out_err;
8499
8500         /* leave request id zero for legacy request
8501          * or if driver does not support multi-scheduled scan
8502          */
8503         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8504                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8505
8506         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8507         if (err)
8508                 goto out_free;
8509
8510         sched_scan_req->dev = dev;
8511         sched_scan_req->wiphy = &rdev->wiphy;
8512
8513         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8514                 sched_scan_req->owner_nlportid = info->snd_portid;
8515
8516         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8517
8518         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8519         return 0;
8520
8521 out_free:
8522         kfree(sched_scan_req);
8523 out_err:
8524         return err;
8525 }
8526
8527 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8528                                    struct genl_info *info)
8529 {
8530         struct cfg80211_sched_scan_request *req;
8531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8532         u64 cookie;
8533
8534         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8535                 return -EOPNOTSUPP;
8536
8537         if (info->attrs[NL80211_ATTR_COOKIE]) {
8538                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8539                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8540         }
8541
8542         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8543                                      struct cfg80211_sched_scan_request,
8544                                      list);
8545         if (!req || req->reqid ||
8546             (req->owner_nlportid &&
8547              req->owner_nlportid != info->snd_portid))
8548                 return -ENOENT;
8549
8550         return cfg80211_stop_sched_scan_req(rdev, req, false);
8551 }
8552
8553 static int nl80211_start_radar_detection(struct sk_buff *skb,
8554                                          struct genl_info *info)
8555 {
8556         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8557         struct net_device *dev = info->user_ptr[1];
8558         struct wireless_dev *wdev = dev->ieee80211_ptr;
8559         struct wiphy *wiphy = wdev->wiphy;
8560         struct cfg80211_chan_def chandef;
8561         enum nl80211_dfs_regions dfs_region;
8562         unsigned int cac_time_ms;
8563         int err;
8564
8565         dfs_region = reg_get_dfs_region(wiphy);
8566         if (dfs_region == NL80211_DFS_UNSET)
8567                 return -EINVAL;
8568
8569         err = nl80211_parse_chandef(rdev, info, &chandef);
8570         if (err)
8571                 return err;
8572
8573         if (netif_carrier_ok(dev))
8574                 return -EBUSY;
8575
8576         if (wdev->cac_started)
8577                 return -EBUSY;
8578
8579         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8580         if (err < 0)
8581                 return err;
8582
8583         if (err == 0)
8584                 return -EINVAL;
8585
8586         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8587                 return -EINVAL;
8588
8589         /* CAC start is offloaded to HW and can't be started manually */
8590         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8591                 return -EOPNOTSUPP;
8592
8593         if (!rdev->ops->start_radar_detection)
8594                 return -EOPNOTSUPP;
8595
8596         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8597         if (WARN_ON(!cac_time_ms))
8598                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8599
8600         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8601         if (!err) {
8602                 wdev->chandef = chandef;
8603                 wdev->cac_started = true;
8604                 wdev->cac_start_time = jiffies;
8605                 wdev->cac_time_ms = cac_time_ms;
8606         }
8607         return err;
8608 }
8609
8610 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8611                                           struct genl_info *info)
8612 {
8613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8614         struct net_device *dev = info->user_ptr[1];
8615         struct wireless_dev *wdev = dev->ieee80211_ptr;
8616         struct wiphy *wiphy = wdev->wiphy;
8617         struct cfg80211_chan_def chandef;
8618         enum nl80211_dfs_regions dfs_region;
8619         int err;
8620
8621         dfs_region = reg_get_dfs_region(wiphy);
8622         if (dfs_region == NL80211_DFS_UNSET) {
8623                 GENL_SET_ERR_MSG(info,
8624                                  "DFS Region is not set. Unexpected Radar indication");
8625                 return -EINVAL;
8626         }
8627
8628         err = nl80211_parse_chandef(rdev, info, &chandef);
8629         if (err) {
8630                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8631                 return err;
8632         }
8633
8634         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8635         if (err < 0) {
8636                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8637                 return err;
8638         }
8639
8640         if (err == 0) {
8641                 GENL_SET_ERR_MSG(info,
8642                                  "Unexpected Radar indication for chandef/iftype");
8643                 return -EINVAL;
8644         }
8645
8646         /* Do not process this notification if radar is already detected
8647          * by kernel on this channel, and return success.
8648          */
8649         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8650                 return 0;
8651
8652         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8653
8654         cfg80211_sched_dfs_chan_update(rdev);
8655
8656         rdev->radar_chandef = chandef;
8657
8658         /* Propagate this notification to other radios as well */
8659         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8660
8661         return 0;
8662 }
8663
8664 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8665 {
8666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8667         struct net_device *dev = info->user_ptr[1];
8668         struct wireless_dev *wdev = dev->ieee80211_ptr;
8669         struct cfg80211_csa_settings params;
8670         /* csa_attrs is defined static to avoid waste of stack size - this
8671          * function is called under RTNL lock, so this should not be a problem.
8672          */
8673         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8674         int err;
8675         bool need_new_beacon = false;
8676         bool need_handle_dfs_flag = true;
8677         int len, i;
8678         u32 cs_count;
8679
8680         if (!rdev->ops->channel_switch ||
8681             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8682                 return -EOPNOTSUPP;
8683
8684         switch (dev->ieee80211_ptr->iftype) {
8685         case NL80211_IFTYPE_AP:
8686         case NL80211_IFTYPE_P2P_GO:
8687                 need_new_beacon = true;
8688                 /* For all modes except AP the handle_dfs flag needs to be
8689                  * supplied to tell the kernel that userspace will handle radar
8690                  * events when they happen. Otherwise a switch to a channel
8691                  * requiring DFS will be rejected.
8692                  */
8693                 need_handle_dfs_flag = false;
8694
8695                 /* useless if AP is not running */
8696                 if (!wdev->beacon_interval)
8697                         return -ENOTCONN;
8698                 break;
8699         case NL80211_IFTYPE_ADHOC:
8700                 if (!wdev->ssid_len)
8701                         return -ENOTCONN;
8702                 break;
8703         case NL80211_IFTYPE_MESH_POINT:
8704                 if (!wdev->mesh_id_len)
8705                         return -ENOTCONN;
8706                 break;
8707         default:
8708                 return -EOPNOTSUPP;
8709         }
8710
8711         memset(&params, 0, sizeof(params));
8712         params.beacon_csa.ftm_responder = -1;
8713
8714         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8715             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8716                 return -EINVAL;
8717
8718         /* only important for AP, IBSS and mesh create IEs internally */
8719         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8720                 return -EINVAL;
8721
8722         /* Even though the attribute is u32, the specification says
8723          * u8, so let's make sure we don't overflow.
8724          */
8725         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8726         if (cs_count > 255)
8727                 return -EINVAL;
8728
8729         params.count = cs_count;
8730
8731         if (!need_new_beacon)
8732                 goto skip_beacons;
8733
8734         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8735         if (err)
8736                 return err;
8737
8738         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8739                                           info->attrs[NL80211_ATTR_CSA_IES],
8740                                           nl80211_policy, info->extack);
8741         if (err)
8742                 return err;
8743
8744         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8745         if (err)
8746                 return err;
8747
8748         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8749                 return -EINVAL;
8750
8751         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8752         if (!len || (len % sizeof(u16)))
8753                 return -EINVAL;
8754
8755         params.n_counter_offsets_beacon = len / sizeof(u16);
8756         if (rdev->wiphy.max_num_csa_counters &&
8757             (params.n_counter_offsets_beacon >
8758              rdev->wiphy.max_num_csa_counters))
8759                 return -EINVAL;
8760
8761         params.counter_offsets_beacon =
8762                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8763
8764         /* sanity checks - counters should fit and be the same */
8765         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8766                 u16 offset = params.counter_offsets_beacon[i];
8767
8768                 if (offset >= params.beacon_csa.tail_len)
8769                         return -EINVAL;
8770
8771                 if (params.beacon_csa.tail[offset] != params.count)
8772                         return -EINVAL;
8773         }
8774
8775         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8776                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8777                 if (!len || (len % sizeof(u16)))
8778                         return -EINVAL;
8779
8780                 params.n_counter_offsets_presp = len / sizeof(u16);
8781                 if (rdev->wiphy.max_num_csa_counters &&
8782                     (params.n_counter_offsets_presp >
8783                      rdev->wiphy.max_num_csa_counters))
8784                         return -EINVAL;
8785
8786                 params.counter_offsets_presp =
8787                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8788
8789                 /* sanity checks - counters should fit and be the same */
8790                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8791                         u16 offset = params.counter_offsets_presp[i];
8792
8793                         if (offset >= params.beacon_csa.probe_resp_len)
8794                                 return -EINVAL;
8795
8796                         if (params.beacon_csa.probe_resp[offset] !=
8797                             params.count)
8798                                 return -EINVAL;
8799                 }
8800         }
8801
8802 skip_beacons:
8803         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8804         if (err)
8805                 return err;
8806
8807         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8808                                            wdev->iftype))
8809                 return -EINVAL;
8810
8811         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8812                                             &params.chandef,
8813                                             wdev->iftype);
8814         if (err < 0)
8815                 return err;
8816
8817         if (err > 0) {
8818                 params.radar_required = true;
8819                 if (need_handle_dfs_flag &&
8820                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8821                         return -EINVAL;
8822                 }
8823         }
8824
8825         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8826                 params.block_tx = true;
8827
8828         wdev_lock(wdev);
8829         err = rdev_channel_switch(rdev, dev, &params);
8830         wdev_unlock(wdev);
8831
8832         return err;
8833 }
8834
8835 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8836                             u32 seq, int flags,
8837                             struct cfg80211_registered_device *rdev,
8838                             struct wireless_dev *wdev,
8839                             struct cfg80211_internal_bss *intbss)
8840 {
8841         struct cfg80211_bss *res = &intbss->pub;
8842         const struct cfg80211_bss_ies *ies;
8843         void *hdr;
8844         struct nlattr *bss;
8845
8846         ASSERT_WDEV_LOCK(wdev);
8847
8848         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8849                              NL80211_CMD_NEW_SCAN_RESULTS);
8850         if (!hdr)
8851                 return -1;
8852
8853         genl_dump_check_consistent(cb, hdr);
8854
8855         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8856                 goto nla_put_failure;
8857         if (wdev->netdev &&
8858             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8859                 goto nla_put_failure;
8860         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8861                               NL80211_ATTR_PAD))
8862                 goto nla_put_failure;
8863
8864         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8865         if (!bss)
8866                 goto nla_put_failure;
8867         if ((!is_zero_ether_addr(res->bssid) &&
8868              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8869                 goto nla_put_failure;
8870
8871         rcu_read_lock();
8872         /* indicate whether we have probe response data or not */
8873         if (rcu_access_pointer(res->proberesp_ies) &&
8874             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8875                 goto fail_unlock_rcu;
8876
8877         /* this pointer prefers to be pointed to probe response data
8878          * but is always valid
8879          */
8880         ies = rcu_dereference(res->ies);
8881         if (ies) {
8882                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8883                                       NL80211_BSS_PAD))
8884                         goto fail_unlock_rcu;
8885                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8886                                         ies->len, ies->data))
8887                         goto fail_unlock_rcu;
8888         }
8889
8890         /* and this pointer is always (unless driver didn't know) beacon data */
8891         ies = rcu_dereference(res->beacon_ies);
8892         if (ies && ies->from_beacon) {
8893                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8894                                       NL80211_BSS_PAD))
8895                         goto fail_unlock_rcu;
8896                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8897                                         ies->len, ies->data))
8898                         goto fail_unlock_rcu;
8899         }
8900         rcu_read_unlock();
8901
8902         if (res->beacon_interval &&
8903             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8904                 goto nla_put_failure;
8905         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8906             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8907             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8908             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8909                         jiffies_to_msecs(jiffies - intbss->ts)))
8910                 goto nla_put_failure;
8911
8912         if (intbss->parent_tsf &&
8913             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8914                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8915              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8916                      intbss->parent_bssid)))
8917                 goto nla_put_failure;
8918
8919         if (intbss->ts_boottime &&
8920             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8921                               intbss->ts_boottime, NL80211_BSS_PAD))
8922                 goto nla_put_failure;
8923
8924         if (!nl80211_put_signal(msg, intbss->pub.chains,
8925                                 intbss->pub.chain_signal,
8926                                 NL80211_BSS_CHAIN_SIGNAL))
8927                 goto nla_put_failure;
8928
8929         switch (rdev->wiphy.signal_type) {
8930         case CFG80211_SIGNAL_TYPE_MBM:
8931                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8932                         goto nla_put_failure;
8933                 break;
8934         case CFG80211_SIGNAL_TYPE_UNSPEC:
8935                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8936                         goto nla_put_failure;
8937                 break;
8938         default:
8939                 break;
8940         }
8941
8942         switch (wdev->iftype) {
8943         case NL80211_IFTYPE_P2P_CLIENT:
8944         case NL80211_IFTYPE_STATION:
8945                 if (intbss == wdev->current_bss &&
8946                     nla_put_u32(msg, NL80211_BSS_STATUS,
8947                                 NL80211_BSS_STATUS_ASSOCIATED))
8948                         goto nla_put_failure;
8949                 break;
8950         case NL80211_IFTYPE_ADHOC:
8951                 if (intbss == wdev->current_bss &&
8952                     nla_put_u32(msg, NL80211_BSS_STATUS,
8953                                 NL80211_BSS_STATUS_IBSS_JOINED))
8954                         goto nla_put_failure;
8955                 break;
8956         default:
8957                 break;
8958         }
8959
8960         nla_nest_end(msg, bss);
8961
8962         genlmsg_end(msg, hdr);
8963         return 0;
8964
8965  fail_unlock_rcu:
8966         rcu_read_unlock();
8967  nla_put_failure:
8968         genlmsg_cancel(msg, hdr);
8969         return -EMSGSIZE;
8970 }
8971
8972 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8973 {
8974         struct cfg80211_registered_device *rdev;
8975         struct cfg80211_internal_bss *scan;
8976         struct wireless_dev *wdev;
8977         int start = cb->args[2], idx = 0;
8978         int err;
8979
8980         rtnl_lock();
8981         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8982         if (err) {
8983                 rtnl_unlock();
8984                 return err;
8985         }
8986
8987         wdev_lock(wdev);
8988         spin_lock_bh(&rdev->bss_lock);
8989
8990         /*
8991          * dump_scan will be called multiple times to break up the scan results
8992          * into multiple messages.  It is unlikely that any more bss-es will be
8993          * expired after the first call, so only call only call this on the
8994          * first dump_scan invocation.
8995          */
8996         if (start == 0)
8997                 cfg80211_bss_expire(rdev);
8998
8999         cb->seq = rdev->bss_generation;
9000
9001         list_for_each_entry(scan, &rdev->bss_list, list) {
9002                 if (++idx <= start)
9003                         continue;
9004                 if (nl80211_send_bss(skb, cb,
9005                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9006                                 rdev, wdev, scan) < 0) {
9007                         idx--;
9008                         break;
9009                 }
9010         }
9011
9012         spin_unlock_bh(&rdev->bss_lock);
9013         wdev_unlock(wdev);
9014
9015         cb->args[2] = idx;
9016         rtnl_unlock();
9017
9018         return skb->len;
9019 }
9020
9021 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9022                                int flags, struct net_device *dev,
9023                                bool allow_radio_stats,
9024                                struct survey_info *survey)
9025 {
9026         void *hdr;
9027         struct nlattr *infoattr;
9028
9029         /* skip radio stats if userspace didn't request them */
9030         if (!survey->channel && !allow_radio_stats)
9031                 return 0;
9032
9033         hdr = nl80211hdr_put(msg, portid, seq, flags,
9034                              NL80211_CMD_NEW_SURVEY_RESULTS);
9035         if (!hdr)
9036                 return -ENOMEM;
9037
9038         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9039                 goto nla_put_failure;
9040
9041         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9042         if (!infoattr)
9043                 goto nla_put_failure;
9044
9045         if (survey->channel &&
9046             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9047                         survey->channel->center_freq))
9048                 goto nla_put_failure;
9049
9050         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9051             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9052                 goto nla_put_failure;
9053         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9054             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9055                 goto nla_put_failure;
9056         if ((survey->filled & SURVEY_INFO_TIME) &&
9057             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9058                         survey->time, NL80211_SURVEY_INFO_PAD))
9059                 goto nla_put_failure;
9060         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9061             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9062                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9063                 goto nla_put_failure;
9064         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9065             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9066                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9067                 goto nla_put_failure;
9068         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9069             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9070                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9071                 goto nla_put_failure;
9072         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9073             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9074                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9075                 goto nla_put_failure;
9076         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9077             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9078                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9079                 goto nla_put_failure;
9080         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9081             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9082                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9083                 goto nla_put_failure;
9084
9085         nla_nest_end(msg, infoattr);
9086
9087         genlmsg_end(msg, hdr);
9088         return 0;
9089
9090  nla_put_failure:
9091         genlmsg_cancel(msg, hdr);
9092         return -EMSGSIZE;
9093 }
9094
9095 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9096 {
9097         struct nlattr **attrbuf;
9098         struct survey_info survey;
9099         struct cfg80211_registered_device *rdev;
9100         struct wireless_dev *wdev;
9101         int survey_idx = cb->args[2];
9102         int res;
9103         bool radio_stats;
9104
9105         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9106         if (!attrbuf)
9107                 return -ENOMEM;
9108
9109         rtnl_lock();
9110         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9111         if (res)
9112                 goto out_err;
9113
9114         /* prepare_wdev_dump parsed the attributes */
9115         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9116
9117         if (!wdev->netdev) {
9118                 res = -EINVAL;
9119                 goto out_err;
9120         }
9121
9122         if (!rdev->ops->dump_survey) {
9123                 res = -EOPNOTSUPP;
9124                 goto out_err;
9125         }
9126
9127         while (1) {
9128                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9129                 if (res == -ENOENT)
9130                         break;
9131                 if (res)
9132                         goto out_err;
9133
9134                 /* don't send disabled channels, but do send non-channel data */
9135                 if (survey.channel &&
9136                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9137                         survey_idx++;
9138                         continue;
9139                 }
9140
9141                 if (nl80211_send_survey(skb,
9142                                 NETLINK_CB(cb->skb).portid,
9143                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9144                                 wdev->netdev, radio_stats, &survey) < 0)
9145                         goto out;
9146                 survey_idx++;
9147         }
9148
9149  out:
9150         cb->args[2] = survey_idx;
9151         res = skb->len;
9152  out_err:
9153         kfree(attrbuf);
9154         rtnl_unlock();
9155         return res;
9156 }
9157
9158 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9159 {
9160         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9161                                   NL80211_WPA_VERSION_2 |
9162                                   NL80211_WPA_VERSION_3));
9163 }
9164
9165 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9166 {
9167         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9168         struct net_device *dev = info->user_ptr[1];
9169         struct ieee80211_channel *chan;
9170         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9171         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9172         enum nl80211_auth_type auth_type;
9173         struct key_parse key;
9174         bool local_state_change;
9175
9176         if (!info->attrs[NL80211_ATTR_MAC])
9177                 return -EINVAL;
9178
9179         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9180                 return -EINVAL;
9181
9182         if (!info->attrs[NL80211_ATTR_SSID])
9183                 return -EINVAL;
9184
9185         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9186                 return -EINVAL;
9187
9188         err = nl80211_parse_key(info, &key);
9189         if (err)
9190                 return err;
9191
9192         if (key.idx >= 0) {
9193                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9194                         return -EINVAL;
9195                 if (!key.p.key || !key.p.key_len)
9196                         return -EINVAL;
9197                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9198                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9199                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9200                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9201                         return -EINVAL;
9202                 if (key.idx > 3)
9203                         return -EINVAL;
9204         } else {
9205                 key.p.key_len = 0;
9206                 key.p.key = NULL;
9207         }
9208
9209         if (key.idx >= 0) {
9210                 int i;
9211                 bool ok = false;
9212
9213                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9214                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9215                                 ok = true;
9216                                 break;
9217                         }
9218                 }
9219                 if (!ok)
9220                         return -EINVAL;
9221         }
9222
9223         if (!rdev->ops->auth)
9224                 return -EOPNOTSUPP;
9225
9226         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9227             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9228                 return -EOPNOTSUPP;
9229
9230         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9231         chan = nl80211_get_valid_chan(&rdev->wiphy,
9232                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9233         if (!chan)
9234                 return -EINVAL;
9235
9236         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9237         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9238
9239         if (info->attrs[NL80211_ATTR_IE]) {
9240                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9241                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9242         }
9243
9244         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9245         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9246                 return -EINVAL;
9247
9248         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9249              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9250              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9251              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9252             !info->attrs[NL80211_ATTR_AUTH_DATA])
9253                 return -EINVAL;
9254
9255         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9256                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9257                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9258                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9259                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9260                         return -EINVAL;
9261                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9262                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9263                 /* need to include at least Auth Transaction and Status Code */
9264                 if (auth_data_len < 4)
9265                         return -EINVAL;
9266         }
9267
9268         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9269
9270         /*
9271          * Since we no longer track auth state, ignore
9272          * requests to only change local state.
9273          */
9274         if (local_state_change)
9275                 return 0;
9276
9277         wdev_lock(dev->ieee80211_ptr);
9278         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9279                                  ssid, ssid_len, ie, ie_len,
9280                                  key.p.key, key.p.key_len, key.idx,
9281                                  auth_data, auth_data_len);
9282         wdev_unlock(dev->ieee80211_ptr);
9283         return err;
9284 }
9285
9286 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9287                                      struct genl_info *info)
9288 {
9289         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9290                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9291                 return -EINVAL;
9292         }
9293
9294         if (!rdev->ops->tx_control_port ||
9295             !wiphy_ext_feature_isset(&rdev->wiphy,
9296                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9297                 return -EOPNOTSUPP;
9298
9299         return 0;
9300 }
9301
9302 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9303                                    struct genl_info *info,
9304                                    struct cfg80211_crypto_settings *settings,
9305                                    int cipher_limit)
9306 {
9307         memset(settings, 0, sizeof(*settings));
9308
9309         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9310
9311         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9312                 u16 proto;
9313
9314                 proto = nla_get_u16(
9315                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9316                 settings->control_port_ethertype = cpu_to_be16(proto);
9317                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9318                     proto != ETH_P_PAE)
9319                         return -EINVAL;
9320                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9321                         settings->control_port_no_encrypt = true;
9322         } else
9323                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9324
9325         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9326                 int r = validate_pae_over_nl80211(rdev, info);
9327
9328                 if (r < 0)
9329                         return r;
9330
9331                 settings->control_port_over_nl80211 = true;
9332
9333                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9334                         settings->control_port_no_preauth = true;
9335         }
9336
9337         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9338                 void *data;
9339                 int len, i;
9340
9341                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9342                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9343                 settings->n_ciphers_pairwise = len / sizeof(u32);
9344
9345                 if (len % sizeof(u32))
9346                         return -EINVAL;
9347
9348                 if (settings->n_ciphers_pairwise > cipher_limit)
9349                         return -EINVAL;
9350
9351                 memcpy(settings->ciphers_pairwise, data, len);
9352
9353                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9354                         if (!cfg80211_supported_cipher_suite(
9355                                         &rdev->wiphy,
9356                                         settings->ciphers_pairwise[i]))
9357                                 return -EINVAL;
9358         }
9359
9360         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9361                 settings->cipher_group =
9362                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9363                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9364                                                      settings->cipher_group))
9365                         return -EINVAL;
9366         }
9367
9368         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9369                 settings->wpa_versions =
9370                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9371                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9372                         return -EINVAL;
9373         }
9374
9375         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9376                 void *data;
9377                 int len;
9378
9379                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9380                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9381                 settings->n_akm_suites = len / sizeof(u32);
9382
9383                 if (len % sizeof(u32))
9384                         return -EINVAL;
9385
9386                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9387                         return -EINVAL;
9388
9389                 memcpy(settings->akm_suites, data, len);
9390         }
9391
9392         if (info->attrs[NL80211_ATTR_PMK]) {
9393                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9394                         return -EINVAL;
9395                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9396                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9397                         return -EINVAL;
9398                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9399         }
9400
9401         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9402                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9403                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9404                         return -EINVAL;
9405                 settings->sae_pwd =
9406                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9407                 settings->sae_pwd_len =
9408                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9409         }
9410
9411         return 0;
9412 }
9413
9414 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9415 {
9416         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9417         struct net_device *dev = info->user_ptr[1];
9418         struct ieee80211_channel *chan;
9419         struct cfg80211_assoc_request req = {};
9420         const u8 *bssid, *ssid;
9421         int err, ssid_len = 0;
9422
9423         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9424             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9425                 return -EPERM;
9426
9427         if (!info->attrs[NL80211_ATTR_MAC] ||
9428             !info->attrs[NL80211_ATTR_SSID] ||
9429             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9430                 return -EINVAL;
9431
9432         if (!rdev->ops->assoc)
9433                 return -EOPNOTSUPP;
9434
9435         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9436             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9437                 return -EOPNOTSUPP;
9438
9439         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9440
9441         chan = nl80211_get_valid_chan(&rdev->wiphy,
9442                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9443         if (!chan)
9444                 return -EINVAL;
9445
9446         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9447         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9448
9449         if (info->attrs[NL80211_ATTR_IE]) {
9450                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9451                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9452         }
9453
9454         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9455                 enum nl80211_mfp mfp =
9456                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9457                 if (mfp == NL80211_MFP_REQUIRED)
9458                         req.use_mfp = true;
9459                 else if (mfp != NL80211_MFP_NO)
9460                         return -EINVAL;
9461         }
9462
9463         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9464                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9465
9466         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9467                 req.flags |= ASSOC_REQ_DISABLE_HT;
9468
9469         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9470                 memcpy(&req.ht_capa_mask,
9471                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9472                        sizeof(req.ht_capa_mask));
9473
9474         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9475                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9476                         return -EINVAL;
9477                 memcpy(&req.ht_capa,
9478                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9479                        sizeof(req.ht_capa));
9480         }
9481
9482         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9483                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9484
9485         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9486                 memcpy(&req.vht_capa_mask,
9487                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9488                        sizeof(req.vht_capa_mask));
9489
9490         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9491                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9492                         return -EINVAL;
9493                 memcpy(&req.vht_capa,
9494                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9495                        sizeof(req.vht_capa));
9496         }
9497
9498         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9499                 if (!((rdev->wiphy.features &
9500                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9501                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9502                     !wiphy_ext_feature_isset(&rdev->wiphy,
9503                                              NL80211_EXT_FEATURE_RRM))
9504                         return -EINVAL;
9505                 req.flags |= ASSOC_REQ_USE_RRM;
9506         }
9507
9508         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9509                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9510                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9511                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9512                         return -EINVAL;
9513                 req.fils_nonces =
9514                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9515         }
9516
9517         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9518         if (!err) {
9519                 wdev_lock(dev->ieee80211_ptr);
9520
9521                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9522                                           ssid, ssid_len, &req);
9523
9524                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9525                         dev->ieee80211_ptr->conn_owner_nlportid =
9526                                 info->snd_portid;
9527                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9528                                bssid, ETH_ALEN);
9529                 }
9530
9531                 wdev_unlock(dev->ieee80211_ptr);
9532         }
9533
9534         return err;
9535 }
9536
9537 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9538 {
9539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9540         struct net_device *dev = info->user_ptr[1];
9541         const u8 *ie = NULL, *bssid;
9542         int ie_len = 0, err;
9543         u16 reason_code;
9544         bool local_state_change;
9545
9546         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9547             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9548                 return -EPERM;
9549
9550         if (!info->attrs[NL80211_ATTR_MAC])
9551                 return -EINVAL;
9552
9553         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9554                 return -EINVAL;
9555
9556         if (!rdev->ops->deauth)
9557                 return -EOPNOTSUPP;
9558
9559         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9560             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9561                 return -EOPNOTSUPP;
9562
9563         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9564
9565         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9566         if (reason_code == 0) {
9567                 /* Reason Code 0 is reserved */
9568                 return -EINVAL;
9569         }
9570
9571         if (info->attrs[NL80211_ATTR_IE]) {
9572                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9573                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9574         }
9575
9576         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9577
9578         wdev_lock(dev->ieee80211_ptr);
9579         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9580                                    local_state_change);
9581         wdev_unlock(dev->ieee80211_ptr);
9582         return err;
9583 }
9584
9585 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9586 {
9587         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9588         struct net_device *dev = info->user_ptr[1];
9589         const u8 *ie = NULL, *bssid;
9590         int ie_len = 0, err;
9591         u16 reason_code;
9592         bool local_state_change;
9593
9594         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9595             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9596                 return -EPERM;
9597
9598         if (!info->attrs[NL80211_ATTR_MAC])
9599                 return -EINVAL;
9600
9601         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9602                 return -EINVAL;
9603
9604         if (!rdev->ops->disassoc)
9605                 return -EOPNOTSUPP;
9606
9607         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9608             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9609                 return -EOPNOTSUPP;
9610
9611         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9612
9613         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9614         if (reason_code == 0) {
9615                 /* Reason Code 0 is reserved */
9616                 return -EINVAL;
9617         }
9618
9619         if (info->attrs[NL80211_ATTR_IE]) {
9620                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9621                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9622         }
9623
9624         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9625
9626         wdev_lock(dev->ieee80211_ptr);
9627         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9628                                      local_state_change);
9629         wdev_unlock(dev->ieee80211_ptr);
9630         return err;
9631 }
9632
9633 static bool
9634 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9635                          int mcast_rate[NUM_NL80211_BANDS],
9636                          int rateval)
9637 {
9638         struct wiphy *wiphy = &rdev->wiphy;
9639         bool found = false;
9640         int band, i;
9641
9642         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9643                 struct ieee80211_supported_band *sband;
9644
9645                 sband = wiphy->bands[band];
9646                 if (!sband)
9647                         continue;
9648
9649                 for (i = 0; i < sband->n_bitrates; i++) {
9650                         if (sband->bitrates[i].bitrate == rateval) {
9651                                 mcast_rate[band] = i + 1;
9652                                 found = true;
9653                                 break;
9654                         }
9655                 }
9656         }
9657
9658         return found;
9659 }
9660
9661 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9662 {
9663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9664         struct net_device *dev = info->user_ptr[1];
9665         struct cfg80211_ibss_params ibss;
9666         struct wiphy *wiphy;
9667         struct cfg80211_cached_keys *connkeys = NULL;
9668         int err;
9669
9670         memset(&ibss, 0, sizeof(ibss));
9671
9672         if (!info->attrs[NL80211_ATTR_SSID] ||
9673             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9674                 return -EINVAL;
9675
9676         ibss.beacon_interval = 100;
9677
9678         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9679                 ibss.beacon_interval =
9680                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9681
9682         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9683                                            ibss.beacon_interval);
9684         if (err)
9685                 return err;
9686
9687         if (!rdev->ops->join_ibss)
9688                 return -EOPNOTSUPP;
9689
9690         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9691                 return -EOPNOTSUPP;
9692
9693         wiphy = &rdev->wiphy;
9694
9695         if (info->attrs[NL80211_ATTR_MAC]) {
9696                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9697
9698                 if (!is_valid_ether_addr(ibss.bssid))
9699                         return -EINVAL;
9700         }
9701         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9702         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9703
9704         if (info->attrs[NL80211_ATTR_IE]) {
9705                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9706                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9707         }
9708
9709         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9710         if (err)
9711                 return err;
9712
9713         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9714                                      NL80211_IFTYPE_ADHOC))
9715                 return -EINVAL;
9716
9717         switch (ibss.chandef.width) {
9718         case NL80211_CHAN_WIDTH_5:
9719         case NL80211_CHAN_WIDTH_10:
9720         case NL80211_CHAN_WIDTH_20_NOHT:
9721                 break;
9722         case NL80211_CHAN_WIDTH_20:
9723         case NL80211_CHAN_WIDTH_40:
9724                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9725                         return -EINVAL;
9726                 break;
9727         case NL80211_CHAN_WIDTH_80:
9728         case NL80211_CHAN_WIDTH_80P80:
9729         case NL80211_CHAN_WIDTH_160:
9730                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9731                         return -EINVAL;
9732                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9733                                              NL80211_EXT_FEATURE_VHT_IBSS))
9734                         return -EINVAL;
9735                 break;
9736         default:
9737                 return -EINVAL;
9738         }
9739
9740         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9741         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9742
9743         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9744                 u8 *rates =
9745                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9746                 int n_rates =
9747                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9748                 struct ieee80211_supported_band *sband =
9749                         wiphy->bands[ibss.chandef.chan->band];
9750
9751                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9752                                              &ibss.basic_rates);
9753                 if (err)
9754                         return err;
9755         }
9756
9757         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9758                 memcpy(&ibss.ht_capa_mask,
9759                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9760                        sizeof(ibss.ht_capa_mask));
9761
9762         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9763                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9764                         return -EINVAL;
9765                 memcpy(&ibss.ht_capa,
9766                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9767                        sizeof(ibss.ht_capa));
9768         }
9769
9770         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9771             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9772                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9773                 return -EINVAL;
9774
9775         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9776                 bool no_ht = false;
9777
9778                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9779                 if (IS_ERR(connkeys))
9780                         return PTR_ERR(connkeys);
9781
9782                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9783                     no_ht) {
9784                         kzfree(connkeys);
9785                         return -EINVAL;
9786                 }
9787         }
9788
9789         ibss.control_port =
9790                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9791
9792         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9793                 int r = validate_pae_over_nl80211(rdev, info);
9794
9795                 if (r < 0) {
9796                         kzfree(connkeys);
9797                         return r;
9798                 }
9799
9800                 ibss.control_port_over_nl80211 = true;
9801         }
9802
9803         ibss.userspace_handles_dfs =
9804                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9805
9806         wdev_lock(dev->ieee80211_ptr);
9807         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9808         if (err)
9809                 kzfree(connkeys);
9810         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9811                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9812         wdev_unlock(dev->ieee80211_ptr);
9813
9814         return err;
9815 }
9816
9817 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9818 {
9819         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9820         struct net_device *dev = info->user_ptr[1];
9821
9822         if (!rdev->ops->leave_ibss)
9823                 return -EOPNOTSUPP;
9824
9825         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9826                 return -EOPNOTSUPP;
9827
9828         return cfg80211_leave_ibss(rdev, dev, false);
9829 }
9830
9831 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9832 {
9833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9834         struct net_device *dev = info->user_ptr[1];
9835         int mcast_rate[NUM_NL80211_BANDS];
9836         u32 nla_rate;
9837         int err;
9838
9839         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9840             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9841             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9842                 return -EOPNOTSUPP;
9843
9844         if (!rdev->ops->set_mcast_rate)
9845                 return -EOPNOTSUPP;
9846
9847         memset(mcast_rate, 0, sizeof(mcast_rate));
9848
9849         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9850                 return -EINVAL;
9851
9852         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9853         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9854                 return -EINVAL;
9855
9856         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9857
9858         return err;
9859 }
9860
9861 static struct sk_buff *
9862 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9863                             struct wireless_dev *wdev, int approxlen,
9864                             u32 portid, u32 seq, enum nl80211_commands cmd,
9865                             enum nl80211_attrs attr,
9866                             const struct nl80211_vendor_cmd_info *info,
9867                             gfp_t gfp)
9868 {
9869         struct sk_buff *skb;
9870         void *hdr;
9871         struct nlattr *data;
9872
9873         skb = nlmsg_new(approxlen + 100, gfp);
9874         if (!skb)
9875                 return NULL;
9876
9877         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9878         if (!hdr) {
9879                 kfree_skb(skb);
9880                 return NULL;
9881         }
9882
9883         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9884                 goto nla_put_failure;
9885
9886         if (info) {
9887                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9888                                 info->vendor_id))
9889                         goto nla_put_failure;
9890                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9891                                 info->subcmd))
9892                         goto nla_put_failure;
9893         }
9894
9895         if (wdev) {
9896                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9897                                       wdev_id(wdev), NL80211_ATTR_PAD))
9898                         goto nla_put_failure;
9899                 if (wdev->netdev &&
9900                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9901                                 wdev->netdev->ifindex))
9902                         goto nla_put_failure;
9903         }
9904
9905         data = nla_nest_start_noflag(skb, attr);
9906         if (!data)
9907                 goto nla_put_failure;
9908
9909         ((void **)skb->cb)[0] = rdev;
9910         ((void **)skb->cb)[1] = hdr;
9911         ((void **)skb->cb)[2] = data;
9912
9913         return skb;
9914
9915  nla_put_failure:
9916         kfree_skb(skb);
9917         return NULL;
9918 }
9919
9920 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9921                                            struct wireless_dev *wdev,
9922                                            enum nl80211_commands cmd,
9923                                            enum nl80211_attrs attr,
9924                                            unsigned int portid,
9925                                            int vendor_event_idx,
9926                                            int approxlen, gfp_t gfp)
9927 {
9928         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9929         const struct nl80211_vendor_cmd_info *info;
9930
9931         switch (cmd) {
9932         case NL80211_CMD_TESTMODE:
9933                 if (WARN_ON(vendor_event_idx != -1))
9934                         return NULL;
9935                 info = NULL;
9936                 break;
9937         case NL80211_CMD_VENDOR:
9938                 if (WARN_ON(vendor_event_idx < 0 ||
9939                             vendor_event_idx >= wiphy->n_vendor_events))
9940                         return NULL;
9941                 info = &wiphy->vendor_events[vendor_event_idx];
9942                 break;
9943         default:
9944                 WARN_ON(1);
9945                 return NULL;
9946         }
9947
9948         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9949                                            cmd, attr, info, gfp);
9950 }
9951 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9952
9953 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9954 {
9955         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9956         void *hdr = ((void **)skb->cb)[1];
9957         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9958         struct nlattr *data = ((void **)skb->cb)[2];
9959         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9960
9961         /* clear CB data for netlink core to own from now on */
9962         memset(skb->cb, 0, sizeof(skb->cb));
9963
9964         nla_nest_end(skb, data);
9965         genlmsg_end(skb, hdr);
9966
9967         if (nlhdr->nlmsg_pid) {
9968                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9969                                 nlhdr->nlmsg_pid);
9970         } else {
9971                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9972                         mcgrp = NL80211_MCGRP_VENDOR;
9973
9974                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9975                                         skb, 0, mcgrp, gfp);
9976         }
9977 }
9978 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9979
9980 #ifdef CONFIG_NL80211_TESTMODE
9981 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9982 {
9983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9984         struct wireless_dev *wdev =
9985                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9986         int err;
9987
9988         if (!rdev->ops->testmode_cmd)
9989                 return -EOPNOTSUPP;
9990
9991         if (IS_ERR(wdev)) {
9992                 err = PTR_ERR(wdev);
9993                 if (err != -EINVAL)
9994                         return err;
9995                 wdev = NULL;
9996         } else if (wdev->wiphy != &rdev->wiphy) {
9997                 return -EINVAL;
9998         }
9999
10000         if (!info->attrs[NL80211_ATTR_TESTDATA])
10001                 return -EINVAL;
10002
10003         rdev->cur_cmd_info = info;
10004         err = rdev_testmode_cmd(rdev, wdev,
10005                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10006                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10007         rdev->cur_cmd_info = NULL;
10008
10009         return err;
10010 }
10011
10012 static int nl80211_testmode_dump(struct sk_buff *skb,
10013                                  struct netlink_callback *cb)
10014 {
10015         struct cfg80211_registered_device *rdev;
10016         struct nlattr **attrbuf = NULL;
10017         int err;
10018         long phy_idx;
10019         void *data = NULL;
10020         int data_len = 0;
10021
10022         rtnl_lock();
10023
10024         if (cb->args[0]) {
10025                 /*
10026                  * 0 is a valid index, but not valid for args[0],
10027                  * so we need to offset by 1.
10028                  */
10029                 phy_idx = cb->args[0] - 1;
10030
10031                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10032                 if (!rdev) {
10033                         err = -ENOENT;
10034                         goto out_err;
10035                 }
10036         } else {
10037                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10038                                   GFP_KERNEL);
10039                 if (!attrbuf) {
10040                         err = -ENOMEM;
10041                         goto out_err;
10042                 }
10043
10044                 err = nlmsg_parse_deprecated(cb->nlh,
10045                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10046                                              attrbuf, nl80211_fam.maxattr,
10047                                              nl80211_policy, NULL);
10048                 if (err)
10049                         goto out_err;
10050
10051                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10052                 if (IS_ERR(rdev)) {
10053                         err = PTR_ERR(rdev);
10054                         goto out_err;
10055                 }
10056                 phy_idx = rdev->wiphy_idx;
10057
10058                 if (attrbuf[NL80211_ATTR_TESTDATA])
10059                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10060         }
10061
10062         if (cb->args[1]) {
10063                 data = nla_data((void *)cb->args[1]);
10064                 data_len = nla_len((void *)cb->args[1]);
10065         }
10066
10067         if (!rdev->ops->testmode_dump) {
10068                 err = -EOPNOTSUPP;
10069                 goto out_err;
10070         }
10071
10072         while (1) {
10073                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10074                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10075                                            NL80211_CMD_TESTMODE);
10076                 struct nlattr *tmdata;
10077
10078                 if (!hdr)
10079                         break;
10080
10081                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10082                         genlmsg_cancel(skb, hdr);
10083                         break;
10084                 }
10085
10086                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10087                 if (!tmdata) {
10088                         genlmsg_cancel(skb, hdr);
10089                         break;
10090                 }
10091                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10092                 nla_nest_end(skb, tmdata);
10093
10094                 if (err == -ENOBUFS || err == -ENOENT) {
10095                         genlmsg_cancel(skb, hdr);
10096                         break;
10097                 } else if (err) {
10098                         genlmsg_cancel(skb, hdr);
10099                         goto out_err;
10100                 }
10101
10102                 genlmsg_end(skb, hdr);
10103         }
10104
10105         err = skb->len;
10106         /* see above */
10107         cb->args[0] = phy_idx + 1;
10108  out_err:
10109         kfree(attrbuf);
10110         rtnl_unlock();
10111         return err;
10112 }
10113 #endif
10114
10115 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10116 {
10117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10118         struct net_device *dev = info->user_ptr[1];
10119         struct cfg80211_connect_params connect;
10120         struct wiphy *wiphy;
10121         struct cfg80211_cached_keys *connkeys = NULL;
10122         int err;
10123
10124         memset(&connect, 0, sizeof(connect));
10125
10126         if (!info->attrs[NL80211_ATTR_SSID] ||
10127             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10128                 return -EINVAL;
10129
10130         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10131                 connect.auth_type =
10132                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10133                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10134                                              NL80211_CMD_CONNECT))
10135                         return -EINVAL;
10136         } else
10137                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10138
10139         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10140
10141         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10142             !wiphy_ext_feature_isset(&rdev->wiphy,
10143                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10144                 return -EINVAL;
10145         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10146
10147         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10148                                       NL80211_MAX_NR_CIPHER_SUITES);
10149         if (err)
10150                 return err;
10151
10152         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10153             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10154                 return -EOPNOTSUPP;
10155
10156         wiphy = &rdev->wiphy;
10157
10158         connect.bg_scan_period = -1;
10159         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10160                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10161                 connect.bg_scan_period =
10162                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10163         }
10164
10165         if (info->attrs[NL80211_ATTR_MAC])
10166                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10167         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10168                 connect.bssid_hint =
10169                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10170         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10171         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10172
10173         if (info->attrs[NL80211_ATTR_IE]) {
10174                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10175                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10176         }
10177
10178         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10179                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10180                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10181                     !wiphy_ext_feature_isset(&rdev->wiphy,
10182                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10183                         return -EOPNOTSUPP;
10184         } else {
10185                 connect.mfp = NL80211_MFP_NO;
10186         }
10187
10188         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10189                 connect.prev_bssid =
10190                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10191
10192         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10193                 connect.channel = nl80211_get_valid_chan(
10194                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
10195                 if (!connect.channel)
10196                         return -EINVAL;
10197         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10198                 connect.channel_hint = nl80211_get_valid_chan(
10199                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10200                 if (!connect.channel_hint)
10201                         return -EINVAL;
10202         }
10203
10204         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10205                 connect.edmg.channels =
10206                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10207
10208                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10209                         connect.edmg.bw_config =
10210                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10211         }
10212
10213         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10214                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10215                 if (IS_ERR(connkeys))
10216                         return PTR_ERR(connkeys);
10217         }
10218
10219         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10220                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10221
10222         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10223                 memcpy(&connect.ht_capa_mask,
10224                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10225                        sizeof(connect.ht_capa_mask));
10226
10227         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10228                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10229                         kzfree(connkeys);
10230                         return -EINVAL;
10231                 }
10232                 memcpy(&connect.ht_capa,
10233                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10234                        sizeof(connect.ht_capa));
10235         }
10236
10237         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10238                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10239
10240         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10241                 memcpy(&connect.vht_capa_mask,
10242                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10243                        sizeof(connect.vht_capa_mask));
10244
10245         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10246                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10247                         kzfree(connkeys);
10248                         return -EINVAL;
10249                 }
10250                 memcpy(&connect.vht_capa,
10251                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10252                        sizeof(connect.vht_capa));
10253         }
10254
10255         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10256                 if (!((rdev->wiphy.features &
10257                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10258                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10259                     !wiphy_ext_feature_isset(&rdev->wiphy,
10260                                              NL80211_EXT_FEATURE_RRM)) {
10261                         kzfree(connkeys);
10262                         return -EINVAL;
10263                 }
10264                 connect.flags |= ASSOC_REQ_USE_RRM;
10265         }
10266
10267         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10268         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10269                 kzfree(connkeys);
10270                 return -EOPNOTSUPP;
10271         }
10272
10273         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10274                 /* bss selection makes no sense if bssid is set */
10275                 if (connect.bssid) {
10276                         kzfree(connkeys);
10277                         return -EINVAL;
10278                 }
10279
10280                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10281                                        wiphy, &connect.bss_select);
10282                 if (err) {
10283                         kzfree(connkeys);
10284                         return err;
10285                 }
10286         }
10287
10288         if (wiphy_ext_feature_isset(&rdev->wiphy,
10289                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10290             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10291             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10292             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10293             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10294                 connect.fils_erp_username =
10295                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10296                 connect.fils_erp_username_len =
10297                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10298                 connect.fils_erp_realm =
10299                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10300                 connect.fils_erp_realm_len =
10301                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10302                 connect.fils_erp_next_seq_num =
10303                         nla_get_u16(
10304                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10305                 connect.fils_erp_rrk =
10306                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10307                 connect.fils_erp_rrk_len =
10308                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10309         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10310                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10311                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10312                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10313                 kzfree(connkeys);
10314                 return -EINVAL;
10315         }
10316
10317         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10318                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10319                         kzfree(connkeys);
10320                         GENL_SET_ERR_MSG(info,
10321                                          "external auth requires connection ownership");
10322                         return -EINVAL;
10323                 }
10324                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10325         }
10326
10327         wdev_lock(dev->ieee80211_ptr);
10328
10329         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10330                                connect.prev_bssid);
10331         if (err)
10332                 kzfree(connkeys);
10333
10334         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10335                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10336                 if (connect.bssid)
10337                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10338                                connect.bssid, ETH_ALEN);
10339                 else
10340                         memset(dev->ieee80211_ptr->disconnect_bssid,
10341                                0, ETH_ALEN);
10342         }
10343
10344         wdev_unlock(dev->ieee80211_ptr);
10345
10346         return err;
10347 }
10348
10349 static int nl80211_update_connect_params(struct sk_buff *skb,
10350                                          struct genl_info *info)
10351 {
10352         struct cfg80211_connect_params connect = {};
10353         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10354         struct net_device *dev = info->user_ptr[1];
10355         struct wireless_dev *wdev = dev->ieee80211_ptr;
10356         bool fils_sk_offload;
10357         u32 auth_type;
10358         u32 changed = 0;
10359         int ret;
10360
10361         if (!rdev->ops->update_connect_params)
10362                 return -EOPNOTSUPP;
10363
10364         if (info->attrs[NL80211_ATTR_IE]) {
10365                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10366                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10367                 changed |= UPDATE_ASSOC_IES;
10368         }
10369
10370         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10371                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10372
10373         /*
10374          * when driver supports fils-sk offload all attributes must be
10375          * provided. So the else covers "fils-sk-not-all" and
10376          * "no-fils-sk-any".
10377          */
10378         if (fils_sk_offload &&
10379             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10380             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10381             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10382             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10383                 connect.fils_erp_username =
10384                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10385                 connect.fils_erp_username_len =
10386                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10387                 connect.fils_erp_realm =
10388                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10389                 connect.fils_erp_realm_len =
10390                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10391                 connect.fils_erp_next_seq_num =
10392                         nla_get_u16(
10393                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10394                 connect.fils_erp_rrk =
10395                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10396                 connect.fils_erp_rrk_len =
10397                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10398                 changed |= UPDATE_FILS_ERP_INFO;
10399         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10400                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10401                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10402                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10403                 return -EINVAL;
10404         }
10405
10406         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10407                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10408                 if (!nl80211_valid_auth_type(rdev, auth_type,
10409                                              NL80211_CMD_CONNECT))
10410                         return -EINVAL;
10411
10412                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10413                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10414                         return -EINVAL;
10415
10416                 connect.auth_type = auth_type;
10417                 changed |= UPDATE_AUTH_TYPE;
10418         }
10419
10420         wdev_lock(dev->ieee80211_ptr);
10421         if (!wdev->current_bss)
10422                 ret = -ENOLINK;
10423         else
10424                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10425         wdev_unlock(dev->ieee80211_ptr);
10426
10427         return ret;
10428 }
10429
10430 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10431 {
10432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10433         struct net_device *dev = info->user_ptr[1];
10434         u16 reason;
10435         int ret;
10436
10437         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10438             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10439                 return -EPERM;
10440
10441         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10442                 reason = WLAN_REASON_DEAUTH_LEAVING;
10443         else
10444                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10445
10446         if (reason == 0)
10447                 return -EINVAL;
10448
10449         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10450             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10451                 return -EOPNOTSUPP;
10452
10453         wdev_lock(dev->ieee80211_ptr);
10454         ret = cfg80211_disconnect(rdev, dev, reason, true);
10455         wdev_unlock(dev->ieee80211_ptr);
10456         return ret;
10457 }
10458
10459 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10460 {
10461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10462         struct net *net;
10463         int err;
10464
10465         if (info->attrs[NL80211_ATTR_PID]) {
10466                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10467
10468                 net = get_net_ns_by_pid(pid);
10469         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10470                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10471
10472                 net = get_net_ns_by_fd(fd);
10473         } else {
10474                 return -EINVAL;
10475         }
10476
10477         if (IS_ERR(net))
10478                 return PTR_ERR(net);
10479
10480         err = 0;
10481
10482         /* check if anything to do */
10483         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10484                 err = cfg80211_switch_netns(rdev, net);
10485
10486         put_net(net);
10487         return err;
10488 }
10489
10490 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10491 {
10492         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10493         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10494                         struct cfg80211_pmksa *pmksa) = NULL;
10495         struct net_device *dev = info->user_ptr[1];
10496         struct cfg80211_pmksa pmksa;
10497
10498         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10499
10500         if (!info->attrs[NL80211_ATTR_PMKID])
10501                 return -EINVAL;
10502
10503         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10504
10505         if (info->attrs[NL80211_ATTR_MAC]) {
10506                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10507         } else if (info->attrs[NL80211_ATTR_SSID] &&
10508                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10509                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10510                     info->attrs[NL80211_ATTR_PMK])) {
10511                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10512                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10513                 pmksa.cache_id =
10514                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10515         } else {
10516                 return -EINVAL;
10517         }
10518         if (info->attrs[NL80211_ATTR_PMK]) {
10519                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10520                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10521         }
10522
10523         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10524                 pmksa.pmk_lifetime =
10525                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10526
10527         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10528                 pmksa.pmk_reauth_threshold =
10529                         nla_get_u8(
10530                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10531
10532         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10533             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10534             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10535               wiphy_ext_feature_isset(&rdev->wiphy,
10536                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10537                 return -EOPNOTSUPP;
10538
10539         switch (info->genlhdr->cmd) {
10540         case NL80211_CMD_SET_PMKSA:
10541                 rdev_ops = rdev->ops->set_pmksa;
10542                 break;
10543         case NL80211_CMD_DEL_PMKSA:
10544                 rdev_ops = rdev->ops->del_pmksa;
10545                 break;
10546         default:
10547                 WARN_ON(1);
10548                 break;
10549         }
10550
10551         if (!rdev_ops)
10552                 return -EOPNOTSUPP;
10553
10554         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10555 }
10556
10557 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10558 {
10559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10560         struct net_device *dev = info->user_ptr[1];
10561
10562         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10563             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10564                 return -EOPNOTSUPP;
10565
10566         if (!rdev->ops->flush_pmksa)
10567                 return -EOPNOTSUPP;
10568
10569         return rdev_flush_pmksa(rdev, dev);
10570 }
10571
10572 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10573 {
10574         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10575         struct net_device *dev = info->user_ptr[1];
10576         u8 action_code, dialog_token;
10577         u32 peer_capability = 0;
10578         u16 status_code;
10579         u8 *peer;
10580         bool initiator;
10581
10582         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10583             !rdev->ops->tdls_mgmt)
10584                 return -EOPNOTSUPP;
10585
10586         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10587             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10588             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10589             !info->attrs[NL80211_ATTR_IE] ||
10590             !info->attrs[NL80211_ATTR_MAC])
10591                 return -EINVAL;
10592
10593         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10594         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10595         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10596         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10597         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10598         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10599                 peer_capability =
10600                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10601
10602         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10603                               dialog_token, status_code, peer_capability,
10604                               initiator,
10605                               nla_data(info->attrs[NL80211_ATTR_IE]),
10606                               nla_len(info->attrs[NL80211_ATTR_IE]));
10607 }
10608
10609 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10610 {
10611         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10612         struct net_device *dev = info->user_ptr[1];
10613         enum nl80211_tdls_operation operation;
10614         u8 *peer;
10615
10616         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10617             !rdev->ops->tdls_oper)
10618                 return -EOPNOTSUPP;
10619
10620         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10621             !info->attrs[NL80211_ATTR_MAC])
10622                 return -EINVAL;
10623
10624         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10625         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10626
10627         return rdev_tdls_oper(rdev, dev, peer, operation);
10628 }
10629
10630 static int nl80211_remain_on_channel(struct sk_buff *skb,
10631                                      struct genl_info *info)
10632 {
10633         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10634         struct wireless_dev *wdev = info->user_ptr[1];
10635         struct cfg80211_chan_def chandef;
10636         const struct cfg80211_chan_def *compat_chandef;
10637         struct sk_buff *msg;
10638         void *hdr;
10639         u64 cookie;
10640         u32 duration;
10641         int err;
10642
10643         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10644             !info->attrs[NL80211_ATTR_DURATION])
10645                 return -EINVAL;
10646
10647         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10648
10649         if (!rdev->ops->remain_on_channel ||
10650             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10651                 return -EOPNOTSUPP;
10652
10653         /*
10654          * We should be on that channel for at least a minimum amount of
10655          * time (10ms) but no longer than the driver supports.
10656          */
10657         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10658             duration > rdev->wiphy.max_remain_on_channel_duration)
10659                 return -EINVAL;
10660
10661         err = nl80211_parse_chandef(rdev, info, &chandef);
10662         if (err)
10663                 return err;
10664
10665         wdev_lock(wdev);
10666         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10667             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10668                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10669                                                              &chandef);
10670                 if (compat_chandef != &chandef) {
10671                         wdev_unlock(wdev);
10672                         return -EBUSY;
10673                 }
10674         }
10675         wdev_unlock(wdev);
10676
10677         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10678         if (!msg)
10679                 return -ENOMEM;
10680
10681         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10682                              NL80211_CMD_REMAIN_ON_CHANNEL);
10683         if (!hdr) {
10684                 err = -ENOBUFS;
10685                 goto free_msg;
10686         }
10687
10688         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10689                                      duration, &cookie);
10690
10691         if (err)
10692                 goto free_msg;
10693
10694         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10695                               NL80211_ATTR_PAD))
10696                 goto nla_put_failure;
10697
10698         genlmsg_end(msg, hdr);
10699
10700         return genlmsg_reply(msg, info);
10701
10702  nla_put_failure:
10703         err = -ENOBUFS;
10704  free_msg:
10705         nlmsg_free(msg);
10706         return err;
10707 }
10708
10709 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10710                                             struct genl_info *info)
10711 {
10712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10713         struct wireless_dev *wdev = info->user_ptr[1];
10714         u64 cookie;
10715
10716         if (!info->attrs[NL80211_ATTR_COOKIE])
10717                 return -EINVAL;
10718
10719         if (!rdev->ops->cancel_remain_on_channel)
10720                 return -EOPNOTSUPP;
10721
10722         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10723
10724         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10725 }
10726
10727 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10728                                        struct genl_info *info)
10729 {
10730         struct cfg80211_bitrate_mask mask;
10731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10732         struct net_device *dev = info->user_ptr[1];
10733         int err;
10734
10735         if (!rdev->ops->set_bitrate_mask)
10736                 return -EOPNOTSUPP;
10737
10738         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10739         if (err)
10740                 return err;
10741
10742         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10743 }
10744
10745 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10746 {
10747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10748         struct wireless_dev *wdev = info->user_ptr[1];
10749         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10750
10751         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10752                 return -EINVAL;
10753
10754         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10755                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10756
10757         switch (wdev->iftype) {
10758         case NL80211_IFTYPE_STATION:
10759         case NL80211_IFTYPE_ADHOC:
10760         case NL80211_IFTYPE_P2P_CLIENT:
10761         case NL80211_IFTYPE_AP:
10762         case NL80211_IFTYPE_AP_VLAN:
10763         case NL80211_IFTYPE_MESH_POINT:
10764         case NL80211_IFTYPE_P2P_GO:
10765         case NL80211_IFTYPE_P2P_DEVICE:
10766                 break;
10767         case NL80211_IFTYPE_NAN:
10768         default:
10769                 return -EOPNOTSUPP;
10770         }
10771
10772         /* not much point in registering if we can't reply */
10773         if (!rdev->ops->mgmt_tx)
10774                 return -EOPNOTSUPP;
10775
10776         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10777                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10778                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10779                                            info->extack);
10780 }
10781
10782 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10783 {
10784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10785         struct wireless_dev *wdev = info->user_ptr[1];
10786         struct cfg80211_chan_def chandef;
10787         int err;
10788         void *hdr = NULL;
10789         u64 cookie;
10790         struct sk_buff *msg = NULL;
10791         struct cfg80211_mgmt_tx_params params = {
10792                 .dont_wait_for_ack =
10793                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10794         };
10795
10796         if (!info->attrs[NL80211_ATTR_FRAME])
10797                 return -EINVAL;
10798
10799         if (!rdev->ops->mgmt_tx)
10800                 return -EOPNOTSUPP;
10801
10802         switch (wdev->iftype) {
10803         case NL80211_IFTYPE_P2P_DEVICE:
10804                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10805                         return -EINVAL;
10806         case NL80211_IFTYPE_STATION:
10807         case NL80211_IFTYPE_ADHOC:
10808         case NL80211_IFTYPE_P2P_CLIENT:
10809         case NL80211_IFTYPE_AP:
10810         case NL80211_IFTYPE_AP_VLAN:
10811         case NL80211_IFTYPE_MESH_POINT:
10812         case NL80211_IFTYPE_P2P_GO:
10813                 break;
10814         case NL80211_IFTYPE_NAN:
10815         default:
10816                 return -EOPNOTSUPP;
10817         }
10818
10819         if (info->attrs[NL80211_ATTR_DURATION]) {
10820                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10821                         return -EINVAL;
10822                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10823
10824                 /*
10825                  * We should wait on the channel for at least a minimum amount
10826                  * of time (10ms) but no longer than the driver supports.
10827                  */
10828                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10829                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10830                         return -EINVAL;
10831         }
10832
10833         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10834
10835         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10836                 return -EINVAL;
10837
10838         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10839
10840         /* get the channel if any has been specified, otherwise pass NULL to
10841          * the driver. The latter will use the current one
10842          */
10843         chandef.chan = NULL;
10844         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10845                 err = nl80211_parse_chandef(rdev, info, &chandef);
10846                 if (err)
10847                         return err;
10848         }
10849
10850         if (!chandef.chan && params.offchan)
10851                 return -EINVAL;
10852
10853         wdev_lock(wdev);
10854         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10855                 wdev_unlock(wdev);
10856                 return -EBUSY;
10857         }
10858         wdev_unlock(wdev);
10859
10860         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10861         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10862
10863         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10864                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10865                 int i;
10866
10867                 if (len % sizeof(u16))
10868                         return -EINVAL;
10869
10870                 params.n_csa_offsets = len / sizeof(u16);
10871                 params.csa_offsets =
10872                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10873
10874                 /* check that all the offsets fit the frame */
10875                 for (i = 0; i < params.n_csa_offsets; i++) {
10876                         if (params.csa_offsets[i] >= params.len)
10877                                 return -EINVAL;
10878                 }
10879         }
10880
10881         if (!params.dont_wait_for_ack) {
10882                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10883                 if (!msg)
10884                         return -ENOMEM;
10885
10886                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10887                                      NL80211_CMD_FRAME);
10888                 if (!hdr) {
10889                         err = -ENOBUFS;
10890                         goto free_msg;
10891                 }
10892         }
10893
10894         params.chan = chandef.chan;
10895         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10896         if (err)
10897                 goto free_msg;
10898
10899         if (msg) {
10900                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10901                                       NL80211_ATTR_PAD))
10902                         goto nla_put_failure;
10903
10904                 genlmsg_end(msg, hdr);
10905                 return genlmsg_reply(msg, info);
10906         }
10907
10908         return 0;
10909
10910  nla_put_failure:
10911         err = -ENOBUFS;
10912  free_msg:
10913         nlmsg_free(msg);
10914         return err;
10915 }
10916
10917 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10918 {
10919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10920         struct wireless_dev *wdev = info->user_ptr[1];
10921         u64 cookie;
10922
10923         if (!info->attrs[NL80211_ATTR_COOKIE])
10924                 return -EINVAL;
10925
10926         if (!rdev->ops->mgmt_tx_cancel_wait)
10927                 return -EOPNOTSUPP;
10928
10929         switch (wdev->iftype) {
10930         case NL80211_IFTYPE_STATION:
10931         case NL80211_IFTYPE_ADHOC:
10932         case NL80211_IFTYPE_P2P_CLIENT:
10933         case NL80211_IFTYPE_AP:
10934         case NL80211_IFTYPE_AP_VLAN:
10935         case NL80211_IFTYPE_P2P_GO:
10936         case NL80211_IFTYPE_P2P_DEVICE:
10937                 break;
10938         case NL80211_IFTYPE_NAN:
10939         default:
10940                 return -EOPNOTSUPP;
10941         }
10942
10943         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10944
10945         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10946 }
10947
10948 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10949 {
10950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10951         struct wireless_dev *wdev;
10952         struct net_device *dev = info->user_ptr[1];
10953         u8 ps_state;
10954         bool state;
10955         int err;
10956
10957         if (!info->attrs[NL80211_ATTR_PS_STATE])
10958                 return -EINVAL;
10959
10960         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10961
10962         wdev = dev->ieee80211_ptr;
10963
10964         if (!rdev->ops->set_power_mgmt)
10965                 return -EOPNOTSUPP;
10966
10967         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10968
10969         if (state == wdev->ps)
10970                 return 0;
10971
10972         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10973         if (!err)
10974                 wdev->ps = state;
10975         return err;
10976 }
10977
10978 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10979 {
10980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10981         enum nl80211_ps_state ps_state;
10982         struct wireless_dev *wdev;
10983         struct net_device *dev = info->user_ptr[1];
10984         struct sk_buff *msg;
10985         void *hdr;
10986         int err;
10987
10988         wdev = dev->ieee80211_ptr;
10989
10990         if (!rdev->ops->set_power_mgmt)
10991                 return -EOPNOTSUPP;
10992
10993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10994         if (!msg)
10995                 return -ENOMEM;
10996
10997         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10998                              NL80211_CMD_GET_POWER_SAVE);
10999         if (!hdr) {
11000                 err = -ENOBUFS;
11001                 goto free_msg;
11002         }
11003
11004         if (wdev->ps)
11005                 ps_state = NL80211_PS_ENABLED;
11006         else
11007                 ps_state = NL80211_PS_DISABLED;
11008
11009         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11010                 goto nla_put_failure;
11011
11012         genlmsg_end(msg, hdr);
11013         return genlmsg_reply(msg, info);
11014
11015  nla_put_failure:
11016         err = -ENOBUFS;
11017  free_msg:
11018         nlmsg_free(msg);
11019         return err;
11020 }
11021
11022 static const struct nla_policy
11023 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11024         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11025         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11026         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11027         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11028         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11029         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11030         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11031 };
11032
11033 static int nl80211_set_cqm_txe(struct genl_info *info,
11034                                u32 rate, u32 pkts, u32 intvl)
11035 {
11036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11037         struct net_device *dev = info->user_ptr[1];
11038         struct wireless_dev *wdev = dev->ieee80211_ptr;
11039
11040         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11041                 return -EINVAL;
11042
11043         if (!rdev->ops->set_cqm_txe_config)
11044                 return -EOPNOTSUPP;
11045
11046         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11047             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11048                 return -EOPNOTSUPP;
11049
11050         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11051 }
11052
11053 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11054                                     struct net_device *dev)
11055 {
11056         struct wireless_dev *wdev = dev->ieee80211_ptr;
11057         s32 last, low, high;
11058         u32 hyst;
11059         int i, n, low_index;
11060         int err;
11061
11062         /* RSSI reporting disabled? */
11063         if (!wdev->cqm_config)
11064                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11065
11066         /*
11067          * Obtain current RSSI value if possible, if not and no RSSI threshold
11068          * event has been received yet, we should receive an event after a
11069          * connection is established and enough beacons received to calculate
11070          * the average.
11071          */
11072         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11073             rdev->ops->get_station) {
11074                 struct station_info sinfo = {};
11075                 u8 *mac_addr;
11076
11077                 mac_addr = wdev->current_bss->pub.bssid;
11078
11079                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11080                 if (err)
11081                         return err;
11082
11083                 cfg80211_sinfo_release_content(&sinfo);
11084                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11085                         wdev->cqm_config->last_rssi_event_value =
11086                                 (s8) sinfo.rx_beacon_signal_avg;
11087         }
11088
11089         last = wdev->cqm_config->last_rssi_event_value;
11090         hyst = wdev->cqm_config->rssi_hyst;
11091         n = wdev->cqm_config->n_rssi_thresholds;
11092
11093         for (i = 0; i < n; i++) {
11094                 i = array_index_nospec(i, n);
11095                 if (last < wdev->cqm_config->rssi_thresholds[i])
11096                         break;
11097         }
11098
11099         low_index = i - 1;
11100         if (low_index >= 0) {
11101                 low_index = array_index_nospec(low_index, n);
11102                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11103         } else {
11104                 low = S32_MIN;
11105         }
11106         if (i < n) {
11107                 i = array_index_nospec(i, n);
11108                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11109         } else {
11110                 high = S32_MAX;
11111         }
11112
11113         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11114 }
11115
11116 static int nl80211_set_cqm_rssi(struct genl_info *info,
11117                                 const s32 *thresholds, int n_thresholds,
11118                                 u32 hysteresis)
11119 {
11120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11121         struct net_device *dev = info->user_ptr[1];
11122         struct wireless_dev *wdev = dev->ieee80211_ptr;
11123         int i, err;
11124         s32 prev = S32_MIN;
11125
11126         /* Check all values negative and sorted */
11127         for (i = 0; i < n_thresholds; i++) {
11128                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11129                         return -EINVAL;
11130
11131                 prev = thresholds[i];
11132         }
11133
11134         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11135             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11136                 return -EOPNOTSUPP;
11137
11138         wdev_lock(wdev);
11139         cfg80211_cqm_config_free(wdev);
11140         wdev_unlock(wdev);
11141
11142         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11143                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11144                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11145
11146                 return rdev_set_cqm_rssi_config(rdev, dev,
11147                                                 thresholds[0], hysteresis);
11148         }
11149
11150         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11151                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11152                 return -EOPNOTSUPP;
11153
11154         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11155                 n_thresholds = 0;
11156
11157         wdev_lock(wdev);
11158         if (n_thresholds) {
11159                 struct cfg80211_cqm_config *cqm_config;
11160
11161                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11162                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11163                 if (!cqm_config) {
11164                         err = -ENOMEM;
11165                         goto unlock;
11166                 }
11167
11168                 cqm_config->rssi_hyst = hysteresis;
11169                 cqm_config->n_rssi_thresholds = n_thresholds;
11170                 memcpy(cqm_config->rssi_thresholds, thresholds,
11171                        n_thresholds * sizeof(s32));
11172
11173                 wdev->cqm_config = cqm_config;
11174         }
11175
11176         err = cfg80211_cqm_rssi_update(rdev, dev);
11177
11178 unlock:
11179         wdev_unlock(wdev);
11180
11181         return err;
11182 }
11183
11184 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11185 {
11186         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11187         struct nlattr *cqm;
11188         int err;
11189
11190         cqm = info->attrs[NL80211_ATTR_CQM];
11191         if (!cqm)
11192                 return -EINVAL;
11193
11194         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11195                                           nl80211_attr_cqm_policy,
11196                                           info->extack);
11197         if (err)
11198                 return err;
11199
11200         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11201             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11202                 const s32 *thresholds =
11203                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11204                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11205                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11206
11207                 if (len % 4)
11208                         return -EINVAL;
11209
11210                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11211                                             hysteresis);
11212         }
11213
11214         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11215             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11216             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11217                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11218                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11219                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11220
11221                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11222         }
11223
11224         return -EINVAL;
11225 }
11226
11227 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11228 {
11229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11230         struct net_device *dev = info->user_ptr[1];
11231         struct ocb_setup setup = {};
11232         int err;
11233
11234         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11235         if (err)
11236                 return err;
11237
11238         return cfg80211_join_ocb(rdev, dev, &setup);
11239 }
11240
11241 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11242 {
11243         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11244         struct net_device *dev = info->user_ptr[1];
11245
11246         return cfg80211_leave_ocb(rdev, dev);
11247 }
11248
11249 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11250 {
11251         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11252         struct net_device *dev = info->user_ptr[1];
11253         struct mesh_config cfg;
11254         struct mesh_setup setup;
11255         int err;
11256
11257         /* start with default */
11258         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11259         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11260
11261         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11262                 /* and parse parameters if given */
11263                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11264                 if (err)
11265                         return err;
11266         }
11267
11268         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11269             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11270                 return -EINVAL;
11271
11272         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11273         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11274
11275         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11276             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11277                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11278                         return -EINVAL;
11279
11280         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11281                 setup.beacon_interval =
11282                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11283
11284                 err = cfg80211_validate_beacon_int(rdev,
11285                                                    NL80211_IFTYPE_MESH_POINT,
11286                                                    setup.beacon_interval);
11287                 if (err)
11288                         return err;
11289         }
11290
11291         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11292                 setup.dtim_period =
11293                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11294                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11295                         return -EINVAL;
11296         }
11297
11298         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11299                 /* parse additional setup parameters if given */
11300                 err = nl80211_parse_mesh_setup(info, &setup);
11301                 if (err)
11302                         return err;
11303         }
11304
11305         if (setup.user_mpm)
11306                 cfg.auto_open_plinks = false;
11307
11308         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11309                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11310                 if (err)
11311                         return err;
11312         } else {
11313                 /* __cfg80211_join_mesh() will sort it out */
11314                 setup.chandef.chan = NULL;
11315         }
11316
11317         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11318                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11319                 int n_rates =
11320                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11321                 struct ieee80211_supported_band *sband;
11322
11323                 if (!setup.chandef.chan)
11324                         return -EINVAL;
11325
11326                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11327
11328                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11329                                              &setup.basic_rates);
11330                 if (err)
11331                         return err;
11332         }
11333
11334         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11335                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11336                 if (err)
11337                         return err;
11338
11339                 if (!setup.chandef.chan)
11340                         return -EINVAL;
11341
11342                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11343                                               &setup.beacon_rate);
11344                 if (err)
11345                         return err;
11346         }
11347
11348         setup.userspace_handles_dfs =
11349                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11350
11351         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11352                 int r = validate_pae_over_nl80211(rdev, info);
11353
11354                 if (r < 0)
11355                         return r;
11356
11357                 setup.control_port_over_nl80211 = true;
11358         }
11359
11360         wdev_lock(dev->ieee80211_ptr);
11361         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11362         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11363                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11364         wdev_unlock(dev->ieee80211_ptr);
11365
11366         return err;
11367 }
11368
11369 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11370 {
11371         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11372         struct net_device *dev = info->user_ptr[1];
11373
11374         return cfg80211_leave_mesh(rdev, dev);
11375 }
11376
11377 #ifdef CONFIG_PM
11378 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11379                                         struct cfg80211_registered_device *rdev)
11380 {
11381         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11382         struct nlattr *nl_pats, *nl_pat;
11383         int i, pat_len;
11384
11385         if (!wowlan->n_patterns)
11386                 return 0;
11387
11388         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11389         if (!nl_pats)
11390                 return -ENOBUFS;
11391
11392         for (i = 0; i < wowlan->n_patterns; i++) {
11393                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11394                 if (!nl_pat)
11395                         return -ENOBUFS;
11396                 pat_len = wowlan->patterns[i].pattern_len;
11397                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11398                             wowlan->patterns[i].mask) ||
11399                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11400                             wowlan->patterns[i].pattern) ||
11401                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11402                                 wowlan->patterns[i].pkt_offset))
11403                         return -ENOBUFS;
11404                 nla_nest_end(msg, nl_pat);
11405         }
11406         nla_nest_end(msg, nl_pats);
11407
11408         return 0;
11409 }
11410
11411 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11412                                    struct cfg80211_wowlan_tcp *tcp)
11413 {
11414         struct nlattr *nl_tcp;
11415
11416         if (!tcp)
11417                 return 0;
11418
11419         nl_tcp = nla_nest_start_noflag(msg,
11420                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11421         if (!nl_tcp)
11422                 return -ENOBUFS;
11423
11424         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11425             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11426             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11427             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11428             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11429             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11430                     tcp->payload_len, tcp->payload) ||
11431             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11432                         tcp->data_interval) ||
11433             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11434                     tcp->wake_len, tcp->wake_data) ||
11435             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11436                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11437                 return -ENOBUFS;
11438
11439         if (tcp->payload_seq.len &&
11440             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11441                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11442                 return -ENOBUFS;
11443
11444         if (tcp->payload_tok.len &&
11445             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11446                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11447                     &tcp->payload_tok))
11448                 return -ENOBUFS;
11449
11450         nla_nest_end(msg, nl_tcp);
11451
11452         return 0;
11453 }
11454
11455 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11456                                   struct cfg80211_sched_scan_request *req)
11457 {
11458         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11459         int i;
11460
11461         if (!req)
11462                 return 0;
11463
11464         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11465         if (!nd)
11466                 return -ENOBUFS;
11467
11468         if (req->n_scan_plans == 1 &&
11469             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11470                         req->scan_plans[0].interval * 1000))
11471                 return -ENOBUFS;
11472
11473         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11474                 return -ENOBUFS;
11475
11476         if (req->relative_rssi_set) {
11477                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11478
11479                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11480                                req->relative_rssi))
11481                         return -ENOBUFS;
11482
11483                 rssi_adjust.band = req->rssi_adjust.band;
11484                 rssi_adjust.delta = req->rssi_adjust.delta;
11485                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11486                             sizeof(rssi_adjust), &rssi_adjust))
11487                         return -ENOBUFS;
11488         }
11489
11490         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11491         if (!freqs)
11492                 return -ENOBUFS;
11493
11494         for (i = 0; i < req->n_channels; i++) {
11495                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11496                         return -ENOBUFS;
11497         }
11498
11499         nla_nest_end(msg, freqs);
11500
11501         if (req->n_match_sets) {
11502                 matches = nla_nest_start_noflag(msg,
11503                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11504                 if (!matches)
11505                         return -ENOBUFS;
11506
11507                 for (i = 0; i < req->n_match_sets; i++) {
11508                         match = nla_nest_start_noflag(msg, i);
11509                         if (!match)
11510                                 return -ENOBUFS;
11511
11512                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11513                                     req->match_sets[i].ssid.ssid_len,
11514                                     req->match_sets[i].ssid.ssid))
11515                                 return -ENOBUFS;
11516                         nla_nest_end(msg, match);
11517                 }
11518                 nla_nest_end(msg, matches);
11519         }
11520
11521         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11522         if (!scan_plans)
11523                 return -ENOBUFS;
11524
11525         for (i = 0; i < req->n_scan_plans; i++) {
11526                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11527                 if (!scan_plan)
11528                         return -ENOBUFS;
11529
11530                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11531                                 req->scan_plans[i].interval) ||
11532                     (req->scan_plans[i].iterations &&
11533                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11534                                  req->scan_plans[i].iterations)))
11535                         return -ENOBUFS;
11536                 nla_nest_end(msg, scan_plan);
11537         }
11538         nla_nest_end(msg, scan_plans);
11539
11540         nla_nest_end(msg, nd);
11541
11542         return 0;
11543 }
11544
11545 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11546 {
11547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11548         struct sk_buff *msg;
11549         void *hdr;
11550         u32 size = NLMSG_DEFAULT_SIZE;
11551
11552         if (!rdev->wiphy.wowlan)
11553                 return -EOPNOTSUPP;
11554
11555         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11556                 /* adjust size to have room for all the data */
11557                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11558                         rdev->wiphy.wowlan_config->tcp->payload_len +
11559                         rdev->wiphy.wowlan_config->tcp->wake_len +
11560                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11561         }
11562
11563         msg = nlmsg_new(size, GFP_KERNEL);
11564         if (!msg)
11565                 return -ENOMEM;
11566
11567         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11568                              NL80211_CMD_GET_WOWLAN);
11569         if (!hdr)
11570                 goto nla_put_failure;
11571
11572         if (rdev->wiphy.wowlan_config) {
11573                 struct nlattr *nl_wowlan;
11574
11575                 nl_wowlan = nla_nest_start_noflag(msg,
11576                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11577                 if (!nl_wowlan)
11578                         goto nla_put_failure;
11579
11580                 if ((rdev->wiphy.wowlan_config->any &&
11581                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11582                     (rdev->wiphy.wowlan_config->disconnect &&
11583                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11584                     (rdev->wiphy.wowlan_config->magic_pkt &&
11585                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11586                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11587                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11588                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11589                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11590                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11591                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11592                     (rdev->wiphy.wowlan_config->rfkill_release &&
11593                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11594                         goto nla_put_failure;
11595
11596                 if (nl80211_send_wowlan_patterns(msg, rdev))
11597                         goto nla_put_failure;
11598
11599                 if (nl80211_send_wowlan_tcp(msg,
11600                                             rdev->wiphy.wowlan_config->tcp))
11601                         goto nla_put_failure;
11602
11603                 if (nl80211_send_wowlan_nd(
11604                             msg,
11605                             rdev->wiphy.wowlan_config->nd_config))
11606                         goto nla_put_failure;
11607
11608                 nla_nest_end(msg, nl_wowlan);
11609         }
11610
11611         genlmsg_end(msg, hdr);
11612         return genlmsg_reply(msg, info);
11613
11614 nla_put_failure:
11615         nlmsg_free(msg);
11616         return -ENOBUFS;
11617 }
11618
11619 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11620                                     struct nlattr *attr,
11621                                     struct cfg80211_wowlan *trig)
11622 {
11623         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11624         struct cfg80211_wowlan_tcp *cfg;
11625         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11626         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11627         u32 size;
11628         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11629         int err, port;
11630
11631         if (!rdev->wiphy.wowlan->tcp)
11632                 return -EINVAL;
11633
11634         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11635                                           nl80211_wowlan_tcp_policy, NULL);
11636         if (err)
11637                 return err;
11638
11639         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11640             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11641             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11642             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11643             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11644             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11645             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11646             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11647                 return -EINVAL;
11648
11649         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11650         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11651                 return -EINVAL;
11652
11653         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11654                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11655             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11656                 return -EINVAL;
11657
11658         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11659         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11660                 return -EINVAL;
11661
11662         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11663         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11664                 return -EINVAL;
11665
11666         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11667                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11668
11669                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11670                 tokens_size = tokln - sizeof(*tok);
11671
11672                 if (!tok->len || tokens_size % tok->len)
11673                         return -EINVAL;
11674                 if (!rdev->wiphy.wowlan->tcp->tok)
11675                         return -EINVAL;
11676                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11677                         return -EINVAL;
11678                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11679                         return -EINVAL;
11680                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11681                         return -EINVAL;
11682                 if (tok->offset + tok->len > data_size)
11683                         return -EINVAL;
11684         }
11685
11686         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11687                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11688                 if (!rdev->wiphy.wowlan->tcp->seq)
11689                         return -EINVAL;
11690                 if (seq->len == 0 || seq->len > 4)
11691                         return -EINVAL;
11692                 if (seq->len + seq->offset > data_size)
11693                         return -EINVAL;
11694         }
11695
11696         size = sizeof(*cfg);
11697         size += data_size;
11698         size += wake_size + wake_mask_size;
11699         size += tokens_size;
11700
11701         cfg = kzalloc(size, GFP_KERNEL);
11702         if (!cfg)
11703                 return -ENOMEM;
11704         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11705         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11706         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11707                ETH_ALEN);
11708         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11709                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11710         else
11711                 port = 0;
11712 #ifdef CONFIG_INET
11713         /* allocate a socket and port for it and use it */
11714         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11715                             IPPROTO_TCP, &cfg->sock, 1);
11716         if (err) {
11717                 kfree(cfg);
11718                 return err;
11719         }
11720         if (inet_csk_get_port(cfg->sock->sk, port)) {
11721                 sock_release(cfg->sock);
11722                 kfree(cfg);
11723                 return -EADDRINUSE;
11724         }
11725         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11726 #else
11727         if (!port) {
11728                 kfree(cfg);
11729                 return -EINVAL;
11730         }
11731         cfg->src_port = port;
11732 #endif
11733
11734         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11735         cfg->payload_len = data_size;
11736         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11737         memcpy((void *)cfg->payload,
11738                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11739                data_size);
11740         if (seq)
11741                 cfg->payload_seq = *seq;
11742         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11743         cfg->wake_len = wake_size;
11744         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11745         memcpy((void *)cfg->wake_data,
11746                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11747                wake_size);
11748         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11749                          data_size + wake_size;
11750         memcpy((void *)cfg->wake_mask,
11751                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11752                wake_mask_size);
11753         if (tok) {
11754                 cfg->tokens_size = tokens_size;
11755                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11756         }
11757
11758         trig->tcp = cfg;
11759
11760         return 0;
11761 }
11762
11763 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11764                                    const struct wiphy_wowlan_support *wowlan,
11765                                    struct nlattr *attr,
11766                                    struct cfg80211_wowlan *trig)
11767 {
11768         struct nlattr **tb;
11769         int err;
11770
11771         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11772         if (!tb)
11773                 return -ENOMEM;
11774
11775         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11776                 err = -EOPNOTSUPP;
11777                 goto out;
11778         }
11779
11780         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11781                                           nl80211_policy, NULL);
11782         if (err)
11783                 goto out;
11784
11785         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11786                                                    wowlan->max_nd_match_sets);
11787         err = PTR_ERR_OR_ZERO(trig->nd_config);
11788         if (err)
11789                 trig->nd_config = NULL;
11790
11791 out:
11792         kfree(tb);
11793         return err;
11794 }
11795
11796 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11797 {
11798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11799         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11800         struct cfg80211_wowlan new_triggers = {};
11801         struct cfg80211_wowlan *ntrig;
11802         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11803         int err, i;
11804         bool prev_enabled = rdev->wiphy.wowlan_config;
11805         bool regular = false;
11806
11807         if (!wowlan)
11808                 return -EOPNOTSUPP;
11809
11810         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11811                 cfg80211_rdev_free_wowlan(rdev);
11812                 rdev->wiphy.wowlan_config = NULL;
11813                 goto set_wakeup;
11814         }
11815
11816         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11817                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11818                                           nl80211_wowlan_policy, info->extack);
11819         if (err)
11820                 return err;
11821
11822         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11823                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11824                         return -EINVAL;
11825                 new_triggers.any = true;
11826         }
11827
11828         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11829                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11830                         return -EINVAL;
11831                 new_triggers.disconnect = true;
11832                 regular = true;
11833         }
11834
11835         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11836                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11837                         return -EINVAL;
11838                 new_triggers.magic_pkt = true;
11839                 regular = true;
11840         }
11841
11842         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11843                 return -EINVAL;
11844
11845         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11846                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11847                         return -EINVAL;
11848                 new_triggers.gtk_rekey_failure = true;
11849                 regular = true;
11850         }
11851
11852         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11853                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11854                         return -EINVAL;
11855                 new_triggers.eap_identity_req = true;
11856                 regular = true;
11857         }
11858
11859         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11860                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11861                         return -EINVAL;
11862                 new_triggers.four_way_handshake = true;
11863                 regular = true;
11864         }
11865
11866         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11867                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11868                         return -EINVAL;
11869                 new_triggers.rfkill_release = true;
11870                 regular = true;
11871         }
11872
11873         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11874                 struct nlattr *pat;
11875                 int n_patterns = 0;
11876                 int rem, pat_len, mask_len, pkt_offset;
11877                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11878
11879                 regular = true;
11880
11881                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11882                                     rem)
11883                         n_patterns++;
11884                 if (n_patterns > wowlan->n_patterns)
11885                         return -EINVAL;
11886
11887                 new_triggers.patterns = kcalloc(n_patterns,
11888                                                 sizeof(new_triggers.patterns[0]),
11889                                                 GFP_KERNEL);
11890                 if (!new_triggers.patterns)
11891                         return -ENOMEM;
11892
11893                 new_triggers.n_patterns = n_patterns;
11894                 i = 0;
11895
11896                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11897                                     rem) {
11898                         u8 *mask_pat;
11899
11900                         err = nla_parse_nested_deprecated(pat_tb,
11901                                                           MAX_NL80211_PKTPAT,
11902                                                           pat,
11903                                                           nl80211_packet_pattern_policy,
11904                                                           info->extack);
11905                         if (err)
11906                                 goto error;
11907
11908                         err = -EINVAL;
11909                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11910                             !pat_tb[NL80211_PKTPAT_PATTERN])
11911                                 goto error;
11912                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11913                         mask_len = DIV_ROUND_UP(pat_len, 8);
11914                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11915                                 goto error;
11916                         if (pat_len > wowlan->pattern_max_len ||
11917                             pat_len < wowlan->pattern_min_len)
11918                                 goto error;
11919
11920                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11921                                 pkt_offset = 0;
11922                         else
11923                                 pkt_offset = nla_get_u32(
11924                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11925                         if (pkt_offset > wowlan->max_pkt_offset)
11926                                 goto error;
11927                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11928
11929                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11930                         if (!mask_pat) {
11931                                 err = -ENOMEM;
11932                                 goto error;
11933                         }
11934                         new_triggers.patterns[i].mask = mask_pat;
11935                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11936                                mask_len);
11937                         mask_pat += mask_len;
11938                         new_triggers.patterns[i].pattern = mask_pat;
11939                         new_triggers.patterns[i].pattern_len = pat_len;
11940                         memcpy(mask_pat,
11941                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11942                                pat_len);
11943                         i++;
11944                 }
11945         }
11946
11947         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11948                 regular = true;
11949                 err = nl80211_parse_wowlan_tcp(
11950                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11951                         &new_triggers);
11952                 if (err)
11953                         goto error;
11954         }
11955
11956         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11957                 regular = true;
11958                 err = nl80211_parse_wowlan_nd(
11959                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11960                         &new_triggers);
11961                 if (err)
11962                         goto error;
11963         }
11964
11965         /* The 'any' trigger means the device continues operating more or less
11966          * as in its normal operation mode and wakes up the host on most of the
11967          * normal interrupts (like packet RX, ...)
11968          * It therefore makes little sense to combine with the more constrained
11969          * wakeup trigger modes.
11970          */
11971         if (new_triggers.any && regular) {
11972                 err = -EINVAL;
11973                 goto error;
11974         }
11975
11976         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11977         if (!ntrig) {
11978                 err = -ENOMEM;
11979                 goto error;
11980         }
11981         cfg80211_rdev_free_wowlan(rdev);
11982         rdev->wiphy.wowlan_config = ntrig;
11983
11984  set_wakeup:
11985         if (rdev->ops->set_wakeup &&
11986             prev_enabled != !!rdev->wiphy.wowlan_config)
11987                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11988
11989         return 0;
11990  error:
11991         for (i = 0; i < new_triggers.n_patterns; i++)
11992                 kfree(new_triggers.patterns[i].mask);
11993         kfree(new_triggers.patterns);
11994         if (new_triggers.tcp && new_triggers.tcp->sock)
11995                 sock_release(new_triggers.tcp->sock);
11996         kfree(new_triggers.tcp);
11997         kfree(new_triggers.nd_config);
11998         return err;
11999 }
12000 #endif
12001
12002 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12003                                        struct cfg80211_registered_device *rdev)
12004 {
12005         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12006         int i, j, pat_len;
12007         struct cfg80211_coalesce_rules *rule;
12008
12009         if (!rdev->coalesce->n_rules)
12010                 return 0;
12011
12012         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12013         if (!nl_rules)
12014                 return -ENOBUFS;
12015
12016         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12017                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12018                 if (!nl_rule)
12019                         return -ENOBUFS;
12020
12021                 rule = &rdev->coalesce->rules[i];
12022                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12023                                 rule->delay))
12024                         return -ENOBUFS;
12025
12026                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12027                                 rule->condition))
12028                         return -ENOBUFS;
12029
12030                 nl_pats = nla_nest_start_noflag(msg,
12031                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12032                 if (!nl_pats)
12033                         return -ENOBUFS;
12034
12035                 for (j = 0; j < rule->n_patterns; j++) {
12036                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12037                         if (!nl_pat)
12038                                 return -ENOBUFS;
12039                         pat_len = rule->patterns[j].pattern_len;
12040                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12041                                     DIV_ROUND_UP(pat_len, 8),
12042                                     rule->patterns[j].mask) ||
12043                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12044                                     rule->patterns[j].pattern) ||
12045                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12046                                         rule->patterns[j].pkt_offset))
12047                                 return -ENOBUFS;
12048                         nla_nest_end(msg, nl_pat);
12049                 }
12050                 nla_nest_end(msg, nl_pats);
12051                 nla_nest_end(msg, nl_rule);
12052         }
12053         nla_nest_end(msg, nl_rules);
12054
12055         return 0;
12056 }
12057
12058 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12059 {
12060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12061         struct sk_buff *msg;
12062         void *hdr;
12063
12064         if (!rdev->wiphy.coalesce)
12065                 return -EOPNOTSUPP;
12066
12067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12068         if (!msg)
12069                 return -ENOMEM;
12070
12071         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12072                              NL80211_CMD_GET_COALESCE);
12073         if (!hdr)
12074                 goto nla_put_failure;
12075
12076         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12077                 goto nla_put_failure;
12078
12079         genlmsg_end(msg, hdr);
12080         return genlmsg_reply(msg, info);
12081
12082 nla_put_failure:
12083         nlmsg_free(msg);
12084         return -ENOBUFS;
12085 }
12086
12087 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12088 {
12089         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12090         int i, j;
12091         struct cfg80211_coalesce_rules *rule;
12092
12093         if (!coalesce)
12094                 return;
12095
12096         for (i = 0; i < coalesce->n_rules; i++) {
12097                 rule = &coalesce->rules[i];
12098                 for (j = 0; j < rule->n_patterns; j++)
12099                         kfree(rule->patterns[j].mask);
12100                 kfree(rule->patterns);
12101         }
12102         kfree(coalesce->rules);
12103         kfree(coalesce);
12104         rdev->coalesce = NULL;
12105 }
12106
12107 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12108                                        struct nlattr *rule,
12109                                        struct cfg80211_coalesce_rules *new_rule)
12110 {
12111         int err, i;
12112         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12113         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12114         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12115         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12116
12117         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12118                                           rule, nl80211_coalesce_policy, NULL);
12119         if (err)
12120                 return err;
12121
12122         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12123                 new_rule->delay =
12124                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12125         if (new_rule->delay > coalesce->max_delay)
12126                 return -EINVAL;
12127
12128         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12129                 new_rule->condition =
12130                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12131
12132         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12133                 return -EINVAL;
12134
12135         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12136                             rem)
12137                 n_patterns++;
12138         if (n_patterns > coalesce->n_patterns)
12139                 return -EINVAL;
12140
12141         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12142                                      GFP_KERNEL);
12143         if (!new_rule->patterns)
12144                 return -ENOMEM;
12145
12146         new_rule->n_patterns = n_patterns;
12147         i = 0;
12148
12149         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12150                             rem) {
12151                 u8 *mask_pat;
12152
12153                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12154                                                   pat,
12155                                                   nl80211_packet_pattern_policy,
12156                                                   NULL);
12157                 if (err)
12158                         return err;
12159
12160                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12161                     !pat_tb[NL80211_PKTPAT_PATTERN])
12162                         return -EINVAL;
12163                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12164                 mask_len = DIV_ROUND_UP(pat_len, 8);
12165                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12166                         return -EINVAL;
12167                 if (pat_len > coalesce->pattern_max_len ||
12168                     pat_len < coalesce->pattern_min_len)
12169                         return -EINVAL;
12170
12171                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12172                         pkt_offset = 0;
12173                 else
12174                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12175                 if (pkt_offset > coalesce->max_pkt_offset)
12176                         return -EINVAL;
12177                 new_rule->patterns[i].pkt_offset = pkt_offset;
12178
12179                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12180                 if (!mask_pat)
12181                         return -ENOMEM;
12182
12183                 new_rule->patterns[i].mask = mask_pat;
12184                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12185                        mask_len);
12186
12187                 mask_pat += mask_len;
12188                 new_rule->patterns[i].pattern = mask_pat;
12189                 new_rule->patterns[i].pattern_len = pat_len;
12190                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12191                        pat_len);
12192                 i++;
12193         }
12194
12195         return 0;
12196 }
12197
12198 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12199 {
12200         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12201         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12202         struct cfg80211_coalesce new_coalesce = {};
12203         struct cfg80211_coalesce *n_coalesce;
12204         int err, rem_rule, n_rules = 0, i, j;
12205         struct nlattr *rule;
12206         struct cfg80211_coalesce_rules *tmp_rule;
12207
12208         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12209                 return -EOPNOTSUPP;
12210
12211         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12212                 cfg80211_rdev_free_coalesce(rdev);
12213                 rdev_set_coalesce(rdev, NULL);
12214                 return 0;
12215         }
12216
12217         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12218                             rem_rule)
12219                 n_rules++;
12220         if (n_rules > coalesce->n_rules)
12221                 return -EINVAL;
12222
12223         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12224                                      GFP_KERNEL);
12225         if (!new_coalesce.rules)
12226                 return -ENOMEM;
12227
12228         new_coalesce.n_rules = n_rules;
12229         i = 0;
12230
12231         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12232                             rem_rule) {
12233                 err = nl80211_parse_coalesce_rule(rdev, rule,
12234                                                   &new_coalesce.rules[i]);
12235                 if (err)
12236                         goto error;
12237
12238                 i++;
12239         }
12240
12241         err = rdev_set_coalesce(rdev, &new_coalesce);
12242         if (err)
12243                 goto error;
12244
12245         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12246         if (!n_coalesce) {
12247                 err = -ENOMEM;
12248                 goto error;
12249         }
12250         cfg80211_rdev_free_coalesce(rdev);
12251         rdev->coalesce = n_coalesce;
12252
12253         return 0;
12254 error:
12255         for (i = 0; i < new_coalesce.n_rules; i++) {
12256                 tmp_rule = &new_coalesce.rules[i];
12257                 for (j = 0; j < tmp_rule->n_patterns; j++)
12258                         kfree(tmp_rule->patterns[j].mask);
12259                 kfree(tmp_rule->patterns);
12260         }
12261         kfree(new_coalesce.rules);
12262
12263         return err;
12264 }
12265
12266 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12267 {
12268         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12269         struct net_device *dev = info->user_ptr[1];
12270         struct wireless_dev *wdev = dev->ieee80211_ptr;
12271         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12272         struct cfg80211_gtk_rekey_data rekey_data;
12273         int err;
12274
12275         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12276                 return -EINVAL;
12277
12278         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12279                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12280                                           nl80211_rekey_policy, info->extack);
12281         if (err)
12282                 return err;
12283
12284         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12285             !tb[NL80211_REKEY_DATA_KCK])
12286                 return -EINVAL;
12287         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12288                 return -ERANGE;
12289         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12290                 return -ERANGE;
12291         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12292                 return -ERANGE;
12293
12294         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12295         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12296         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12297
12298         wdev_lock(wdev);
12299         if (!wdev->current_bss) {
12300                 err = -ENOTCONN;
12301                 goto out;
12302         }
12303
12304         if (!rdev->ops->set_rekey_data) {
12305                 err = -EOPNOTSUPP;
12306                 goto out;
12307         }
12308
12309         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12310  out:
12311         wdev_unlock(wdev);
12312         return err;
12313 }
12314
12315 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12316                                              struct genl_info *info)
12317 {
12318         struct net_device *dev = info->user_ptr[1];
12319         struct wireless_dev *wdev = dev->ieee80211_ptr;
12320
12321         if (wdev->iftype != NL80211_IFTYPE_AP &&
12322             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12323                 return -EINVAL;
12324
12325         if (wdev->ap_unexpected_nlportid)
12326                 return -EBUSY;
12327
12328         wdev->ap_unexpected_nlportid = info->snd_portid;
12329         return 0;
12330 }
12331
12332 static int nl80211_probe_client(struct sk_buff *skb,
12333                                 struct genl_info *info)
12334 {
12335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12336         struct net_device *dev = info->user_ptr[1];
12337         struct wireless_dev *wdev = dev->ieee80211_ptr;
12338         struct sk_buff *msg;
12339         void *hdr;
12340         const u8 *addr;
12341         u64 cookie;
12342         int err;
12343
12344         if (wdev->iftype != NL80211_IFTYPE_AP &&
12345             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12346                 return -EOPNOTSUPP;
12347
12348         if (!info->attrs[NL80211_ATTR_MAC])
12349                 return -EINVAL;
12350
12351         if (!rdev->ops->probe_client)
12352                 return -EOPNOTSUPP;
12353
12354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12355         if (!msg)
12356                 return -ENOMEM;
12357
12358         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12359                              NL80211_CMD_PROBE_CLIENT);
12360         if (!hdr) {
12361                 err = -ENOBUFS;
12362                 goto free_msg;
12363         }
12364
12365         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12366
12367         err = rdev_probe_client(rdev, dev, addr, &cookie);
12368         if (err)
12369                 goto free_msg;
12370
12371         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12372                               NL80211_ATTR_PAD))
12373                 goto nla_put_failure;
12374
12375         genlmsg_end(msg, hdr);
12376
12377         return genlmsg_reply(msg, info);
12378
12379  nla_put_failure:
12380         err = -ENOBUFS;
12381  free_msg:
12382         nlmsg_free(msg);
12383         return err;
12384 }
12385
12386 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12387 {
12388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12389         struct cfg80211_beacon_registration *reg, *nreg;
12390         int rv;
12391
12392         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12393                 return -EOPNOTSUPP;
12394
12395         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12396         if (!nreg)
12397                 return -ENOMEM;
12398
12399         /* First, check if already registered. */
12400         spin_lock_bh(&rdev->beacon_registrations_lock);
12401         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12402                 if (reg->nlportid == info->snd_portid) {
12403                         rv = -EALREADY;
12404                         goto out_err;
12405                 }
12406         }
12407         /* Add it to the list */
12408         nreg->nlportid = info->snd_portid;
12409         list_add(&nreg->list, &rdev->beacon_registrations);
12410
12411         spin_unlock_bh(&rdev->beacon_registrations_lock);
12412
12413         return 0;
12414 out_err:
12415         spin_unlock_bh(&rdev->beacon_registrations_lock);
12416         kfree(nreg);
12417         return rv;
12418 }
12419
12420 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12421 {
12422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12423         struct wireless_dev *wdev = info->user_ptr[1];
12424         int err;
12425
12426         if (!rdev->ops->start_p2p_device)
12427                 return -EOPNOTSUPP;
12428
12429         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12430                 return -EOPNOTSUPP;
12431
12432         if (wdev_running(wdev))
12433                 return 0;
12434
12435         if (rfkill_blocked(rdev->rfkill))
12436                 return -ERFKILL;
12437
12438         err = rdev_start_p2p_device(rdev, wdev);
12439         if (err)
12440                 return err;
12441
12442         wdev->is_running = true;
12443         rdev->opencount++;
12444
12445         return 0;
12446 }
12447
12448 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12449 {
12450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12451         struct wireless_dev *wdev = info->user_ptr[1];
12452
12453         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12454                 return -EOPNOTSUPP;
12455
12456         if (!rdev->ops->stop_p2p_device)
12457                 return -EOPNOTSUPP;
12458
12459         cfg80211_stop_p2p_device(rdev, wdev);
12460
12461         return 0;
12462 }
12463
12464 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12465 {
12466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12467         struct wireless_dev *wdev = info->user_ptr[1];
12468         struct cfg80211_nan_conf conf = {};
12469         int err;
12470
12471         if (wdev->iftype != NL80211_IFTYPE_NAN)
12472                 return -EOPNOTSUPP;
12473
12474         if (wdev_running(wdev))
12475                 return -EEXIST;
12476
12477         if (rfkill_blocked(rdev->rfkill))
12478                 return -ERFKILL;
12479
12480         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12481                 return -EINVAL;
12482
12483         conf.master_pref =
12484                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12485
12486         if (info->attrs[NL80211_ATTR_BANDS]) {
12487                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12488
12489                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12490                         return -EOPNOTSUPP;
12491
12492                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12493                         return -EINVAL;
12494
12495                 conf.bands = bands;
12496         }
12497
12498         err = rdev_start_nan(rdev, wdev, &conf);
12499         if (err)
12500                 return err;
12501
12502         wdev->is_running = true;
12503         rdev->opencount++;
12504
12505         return 0;
12506 }
12507
12508 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12509 {
12510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12511         struct wireless_dev *wdev = info->user_ptr[1];
12512
12513         if (wdev->iftype != NL80211_IFTYPE_NAN)
12514                 return -EOPNOTSUPP;
12515
12516         cfg80211_stop_nan(rdev, wdev);
12517
12518         return 0;
12519 }
12520
12521 static int validate_nan_filter(struct nlattr *filter_attr)
12522 {
12523         struct nlattr *attr;
12524         int len = 0, n_entries = 0, rem;
12525
12526         nla_for_each_nested(attr, filter_attr, rem) {
12527                 len += nla_len(attr);
12528                 n_entries++;
12529         }
12530
12531         if (len >= U8_MAX)
12532                 return -EINVAL;
12533
12534         return n_entries;
12535 }
12536
12537 static int handle_nan_filter(struct nlattr *attr_filter,
12538                              struct cfg80211_nan_func *func,
12539                              bool tx)
12540 {
12541         struct nlattr *attr;
12542         int n_entries, rem, i;
12543         struct cfg80211_nan_func_filter *filter;
12544
12545         n_entries = validate_nan_filter(attr_filter);
12546         if (n_entries < 0)
12547                 return n_entries;
12548
12549         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12550
12551         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12552         if (!filter)
12553                 return -ENOMEM;
12554
12555         i = 0;
12556         nla_for_each_nested(attr, attr_filter, rem) {
12557                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12558                 filter[i].len = nla_len(attr);
12559                 i++;
12560         }
12561         if (tx) {
12562                 func->num_tx_filters = n_entries;
12563                 func->tx_filters = filter;
12564         } else {
12565                 func->num_rx_filters = n_entries;
12566                 func->rx_filters = filter;
12567         }
12568
12569         return 0;
12570 }
12571
12572 static int nl80211_nan_add_func(struct sk_buff *skb,
12573                                 struct genl_info *info)
12574 {
12575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12576         struct wireless_dev *wdev = info->user_ptr[1];
12577         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12578         struct cfg80211_nan_func *func;
12579         struct sk_buff *msg = NULL;
12580         void *hdr = NULL;
12581         int err = 0;
12582
12583         if (wdev->iftype != NL80211_IFTYPE_NAN)
12584                 return -EOPNOTSUPP;
12585
12586         if (!wdev_running(wdev))
12587                 return -ENOTCONN;
12588
12589         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12590                 return -EINVAL;
12591
12592         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12593                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12594                                           nl80211_nan_func_policy,
12595                                           info->extack);
12596         if (err)
12597                 return err;
12598
12599         func = kzalloc(sizeof(*func), GFP_KERNEL);
12600         if (!func)
12601                 return -ENOMEM;
12602
12603         func->cookie = cfg80211_assign_cookie(rdev);
12604
12605         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12606             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12607                 err = -EINVAL;
12608                 goto out;
12609         }
12610
12611
12612         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12613
12614         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12615                 err = -EINVAL;
12616                 goto out;
12617         }
12618
12619         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12620                sizeof(func->service_id));
12621
12622         func->close_range =
12623                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12624
12625         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12626                 func->serv_spec_info_len =
12627                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12628                 func->serv_spec_info =
12629                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12630                                 func->serv_spec_info_len,
12631                                 GFP_KERNEL);
12632                 if (!func->serv_spec_info) {
12633                         err = -ENOMEM;
12634                         goto out;
12635                 }
12636         }
12637
12638         if (tb[NL80211_NAN_FUNC_TTL])
12639                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12640
12641         switch (func->type) {
12642         case NL80211_NAN_FUNC_PUBLISH:
12643                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12644                         err = -EINVAL;
12645                         goto out;
12646                 }
12647
12648                 func->publish_type =
12649                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12650                 func->publish_bcast =
12651                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12652
12653                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12654                         func->publish_bcast) {
12655                         err = -EINVAL;
12656                         goto out;
12657                 }
12658                 break;
12659         case NL80211_NAN_FUNC_SUBSCRIBE:
12660                 func->subscribe_active =
12661                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12662                 break;
12663         case NL80211_NAN_FUNC_FOLLOW_UP:
12664                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12665                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12666                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12667                         err = -EINVAL;
12668                         goto out;
12669                 }
12670
12671                 func->followup_id =
12672                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12673                 func->followup_reqid =
12674                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12675                 memcpy(func->followup_dest.addr,
12676                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12677                        sizeof(func->followup_dest.addr));
12678                 if (func->ttl) {
12679                         err = -EINVAL;
12680                         goto out;
12681                 }
12682                 break;
12683         default:
12684                 err = -EINVAL;
12685                 goto out;
12686         }
12687
12688         if (tb[NL80211_NAN_FUNC_SRF]) {
12689                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12690
12691                 err = nla_parse_nested_deprecated(srf_tb,
12692                                                   NL80211_NAN_SRF_ATTR_MAX,
12693                                                   tb[NL80211_NAN_FUNC_SRF],
12694                                                   nl80211_nan_srf_policy,
12695                                                   info->extack);
12696                 if (err)
12697                         goto out;
12698
12699                 func->srf_include =
12700                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12701
12702                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12703                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12704                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12705                                 err = -EINVAL;
12706                                 goto out;
12707                         }
12708
12709                         func->srf_bf_len =
12710                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12711                         func->srf_bf =
12712                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12713                                         func->srf_bf_len, GFP_KERNEL);
12714                         if (!func->srf_bf) {
12715                                 err = -ENOMEM;
12716                                 goto out;
12717                         }
12718
12719                         func->srf_bf_idx =
12720                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12721                 } else {
12722                         struct nlattr *attr, *mac_attr =
12723                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12724                         int n_entries, rem, i = 0;
12725
12726                         if (!mac_attr) {
12727                                 err = -EINVAL;
12728                                 goto out;
12729                         }
12730
12731                         n_entries = validate_acl_mac_addrs(mac_attr);
12732                         if (n_entries <= 0) {
12733                                 err = -EINVAL;
12734                                 goto out;
12735                         }
12736
12737                         func->srf_num_macs = n_entries;
12738                         func->srf_macs =
12739                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12740                                         GFP_KERNEL);
12741                         if (!func->srf_macs) {
12742                                 err = -ENOMEM;
12743                                 goto out;
12744                         }
12745
12746                         nla_for_each_nested(attr, mac_attr, rem)
12747                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12748                                        sizeof(*func->srf_macs));
12749                 }
12750         }
12751
12752         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12753                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12754                                         func, true);
12755                 if (err)
12756                         goto out;
12757         }
12758
12759         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12760                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12761                                         func, false);
12762                 if (err)
12763                         goto out;
12764         }
12765
12766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12767         if (!msg) {
12768                 err = -ENOMEM;
12769                 goto out;
12770         }
12771
12772         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12773                              NL80211_CMD_ADD_NAN_FUNCTION);
12774         /* This can't really happen - we just allocated 4KB */
12775         if (WARN_ON(!hdr)) {
12776                 err = -ENOMEM;
12777                 goto out;
12778         }
12779
12780         err = rdev_add_nan_func(rdev, wdev, func);
12781 out:
12782         if (err < 0) {
12783                 cfg80211_free_nan_func(func);
12784                 nlmsg_free(msg);
12785                 return err;
12786         }
12787
12788         /* propagate the instance id and cookie to userspace  */
12789         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12790                               NL80211_ATTR_PAD))
12791                 goto nla_put_failure;
12792
12793         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12794         if (!func_attr)
12795                 goto nla_put_failure;
12796
12797         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12798                        func->instance_id))
12799                 goto nla_put_failure;
12800
12801         nla_nest_end(msg, func_attr);
12802
12803         genlmsg_end(msg, hdr);
12804         return genlmsg_reply(msg, info);
12805
12806 nla_put_failure:
12807         nlmsg_free(msg);
12808         return -ENOBUFS;
12809 }
12810
12811 static int nl80211_nan_del_func(struct sk_buff *skb,
12812                                struct genl_info *info)
12813 {
12814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12815         struct wireless_dev *wdev = info->user_ptr[1];
12816         u64 cookie;
12817
12818         if (wdev->iftype != NL80211_IFTYPE_NAN)
12819                 return -EOPNOTSUPP;
12820
12821         if (!wdev_running(wdev))
12822                 return -ENOTCONN;
12823
12824         if (!info->attrs[NL80211_ATTR_COOKIE])
12825                 return -EINVAL;
12826
12827         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12828
12829         rdev_del_nan_func(rdev, wdev, cookie);
12830
12831         return 0;
12832 }
12833
12834 static int nl80211_nan_change_config(struct sk_buff *skb,
12835                                      struct genl_info *info)
12836 {
12837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12838         struct wireless_dev *wdev = info->user_ptr[1];
12839         struct cfg80211_nan_conf conf = {};
12840         u32 changed = 0;
12841
12842         if (wdev->iftype != NL80211_IFTYPE_NAN)
12843                 return -EOPNOTSUPP;
12844
12845         if (!wdev_running(wdev))
12846                 return -ENOTCONN;
12847
12848         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12849                 conf.master_pref =
12850                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12851                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12852                         return -EINVAL;
12853
12854                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12855         }
12856
12857         if (info->attrs[NL80211_ATTR_BANDS]) {
12858                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12859
12860                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12861                         return -EOPNOTSUPP;
12862
12863                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12864                         return -EINVAL;
12865
12866                 conf.bands = bands;
12867                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12868         }
12869
12870         if (!changed)
12871                 return -EINVAL;
12872
12873         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12874 }
12875
12876 void cfg80211_nan_match(struct wireless_dev *wdev,
12877                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12878 {
12879         struct wiphy *wiphy = wdev->wiphy;
12880         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12881         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12882         struct sk_buff *msg;
12883         void *hdr;
12884
12885         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12886                 return;
12887
12888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12889         if (!msg)
12890                 return;
12891
12892         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12893         if (!hdr) {
12894                 nlmsg_free(msg);
12895                 return;
12896         }
12897
12898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12899             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12900                                          wdev->netdev->ifindex)) ||
12901             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12902                               NL80211_ATTR_PAD))
12903                 goto nla_put_failure;
12904
12905         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12906                               NL80211_ATTR_PAD) ||
12907             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12908                 goto nla_put_failure;
12909
12910         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12911         if (!match_attr)
12912                 goto nla_put_failure;
12913
12914         local_func_attr = nla_nest_start_noflag(msg,
12915                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12916         if (!local_func_attr)
12917                 goto nla_put_failure;
12918
12919         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12920                 goto nla_put_failure;
12921
12922         nla_nest_end(msg, local_func_attr);
12923
12924         peer_func_attr = nla_nest_start_noflag(msg,
12925                                                NL80211_NAN_MATCH_FUNC_PEER);
12926         if (!peer_func_attr)
12927                 goto nla_put_failure;
12928
12929         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12930             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12931                 goto nla_put_failure;
12932
12933         if (match->info && match->info_len &&
12934             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12935                     match->info))
12936                 goto nla_put_failure;
12937
12938         nla_nest_end(msg, peer_func_attr);
12939         nla_nest_end(msg, match_attr);
12940         genlmsg_end(msg, hdr);
12941
12942         if (!wdev->owner_nlportid)
12943                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12944                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12945         else
12946                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12947                                 wdev->owner_nlportid);
12948
12949         return;
12950
12951 nla_put_failure:
12952         nlmsg_free(msg);
12953 }
12954 EXPORT_SYMBOL(cfg80211_nan_match);
12955
12956 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12957                                   u8 inst_id,
12958                                   enum nl80211_nan_func_term_reason reason,
12959                                   u64 cookie, gfp_t gfp)
12960 {
12961         struct wiphy *wiphy = wdev->wiphy;
12962         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12963         struct sk_buff *msg;
12964         struct nlattr *func_attr;
12965         void *hdr;
12966
12967         if (WARN_ON(!inst_id))
12968                 return;
12969
12970         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12971         if (!msg)
12972                 return;
12973
12974         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12975         if (!hdr) {
12976                 nlmsg_free(msg);
12977                 return;
12978         }
12979
12980         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12981             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12982                                          wdev->netdev->ifindex)) ||
12983             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12984                               NL80211_ATTR_PAD))
12985                 goto nla_put_failure;
12986
12987         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12988                               NL80211_ATTR_PAD))
12989                 goto nla_put_failure;
12990
12991         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12992         if (!func_attr)
12993                 goto nla_put_failure;
12994
12995         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12996             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12997                 goto nla_put_failure;
12998
12999         nla_nest_end(msg, func_attr);
13000         genlmsg_end(msg, hdr);
13001
13002         if (!wdev->owner_nlportid)
13003                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13004                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13005         else
13006                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13007                                 wdev->owner_nlportid);
13008
13009         return;
13010
13011 nla_put_failure:
13012         nlmsg_free(msg);
13013 }
13014 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13015
13016 static int nl80211_get_protocol_features(struct sk_buff *skb,
13017                                          struct genl_info *info)
13018 {
13019         void *hdr;
13020         struct sk_buff *msg;
13021
13022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13023         if (!msg)
13024                 return -ENOMEM;
13025
13026         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13027                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13028         if (!hdr)
13029                 goto nla_put_failure;
13030
13031         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13032                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13033                 goto nla_put_failure;
13034
13035         genlmsg_end(msg, hdr);
13036         return genlmsg_reply(msg, info);
13037
13038  nla_put_failure:
13039         kfree_skb(msg);
13040         return -ENOBUFS;
13041 }
13042
13043 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13044 {
13045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13046         struct cfg80211_update_ft_ies_params ft_params;
13047         struct net_device *dev = info->user_ptr[1];
13048
13049         if (!rdev->ops->update_ft_ies)
13050                 return -EOPNOTSUPP;
13051
13052         if (!info->attrs[NL80211_ATTR_MDID] ||
13053             !info->attrs[NL80211_ATTR_IE])
13054                 return -EINVAL;
13055
13056         memset(&ft_params, 0, sizeof(ft_params));
13057         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13058         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13059         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13060
13061         return rdev_update_ft_ies(rdev, dev, &ft_params);
13062 }
13063
13064 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13065                                        struct genl_info *info)
13066 {
13067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13068         struct wireless_dev *wdev = info->user_ptr[1];
13069         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13070         u16 duration;
13071         int ret;
13072
13073         if (!rdev->ops->crit_proto_start)
13074                 return -EOPNOTSUPP;
13075
13076         if (WARN_ON(!rdev->ops->crit_proto_stop))
13077                 return -EINVAL;
13078
13079         if (rdev->crit_proto_nlportid)
13080                 return -EBUSY;
13081
13082         /* determine protocol if provided */
13083         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13084                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13085
13086         if (proto >= NUM_NL80211_CRIT_PROTO)
13087                 return -EINVAL;
13088
13089         /* timeout must be provided */
13090         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13091                 return -EINVAL;
13092
13093         duration =
13094                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13095
13096         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13097                 return -ERANGE;
13098
13099         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13100         if (!ret)
13101                 rdev->crit_proto_nlportid = info->snd_portid;
13102
13103         return ret;
13104 }
13105
13106 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13107                                       struct genl_info *info)
13108 {
13109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13110         struct wireless_dev *wdev = info->user_ptr[1];
13111
13112         if (!rdev->ops->crit_proto_stop)
13113                 return -EOPNOTSUPP;
13114
13115         if (rdev->crit_proto_nlportid) {
13116                 rdev->crit_proto_nlportid = 0;
13117                 rdev_crit_proto_stop(rdev, wdev);
13118         }
13119         return 0;
13120 }
13121
13122 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13123                                        struct nlattr *attr,
13124                                        struct netlink_ext_ack *extack)
13125 {
13126         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13127                 if (attr->nla_type & NLA_F_NESTED) {
13128                         NL_SET_ERR_MSG_ATTR(extack, attr,
13129                                             "unexpected nested data");
13130                         return -EINVAL;
13131                 }
13132
13133                 return 0;
13134         }
13135
13136         if (!(attr->nla_type & NLA_F_NESTED)) {
13137                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13138                 return -EINVAL;
13139         }
13140
13141         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13142 }
13143
13144 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13145 {
13146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13147         struct wireless_dev *wdev =
13148                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13149         int i, err;
13150         u32 vid, subcmd;
13151
13152         if (!rdev->wiphy.vendor_commands)
13153                 return -EOPNOTSUPP;
13154
13155         if (IS_ERR(wdev)) {
13156                 err = PTR_ERR(wdev);
13157                 if (err != -EINVAL)
13158                         return err;
13159                 wdev = NULL;
13160         } else if (wdev->wiphy != &rdev->wiphy) {
13161                 return -EINVAL;
13162         }
13163
13164         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13165             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13166                 return -EINVAL;
13167
13168         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13169         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13170         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13171                 const struct wiphy_vendor_command *vcmd;
13172                 void *data = NULL;
13173                 int len = 0;
13174
13175                 vcmd = &rdev->wiphy.vendor_commands[i];
13176
13177                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13178                         continue;
13179
13180                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13181                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13182                         if (!wdev)
13183                                 return -EINVAL;
13184                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13185                             !wdev->netdev)
13186                                 return -EINVAL;
13187
13188                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13189                                 if (!wdev_running(wdev))
13190                                         return -ENETDOWN;
13191                         }
13192
13193                         if (!vcmd->doit)
13194                                 return -EOPNOTSUPP;
13195                 } else {
13196                         wdev = NULL;
13197                 }
13198
13199                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13200                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13201                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13202
13203                         err = nl80211_vendor_check_policy(vcmd,
13204                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13205                                         info->extack);
13206                         if (err)
13207                                 return err;
13208                 }
13209
13210                 rdev->cur_cmd_info = info;
13211                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13212                 rdev->cur_cmd_info = NULL;
13213                 return err;
13214         }
13215
13216         return -EOPNOTSUPP;
13217 }
13218
13219 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13220                                        struct netlink_callback *cb,
13221                                        struct cfg80211_registered_device **rdev,
13222                                        struct wireless_dev **wdev)
13223 {
13224         struct nlattr **attrbuf;
13225         u32 vid, subcmd;
13226         unsigned int i;
13227         int vcmd_idx = -1;
13228         int err;
13229         void *data = NULL;
13230         unsigned int data_len = 0;
13231
13232         if (cb->args[0]) {
13233                 /* subtract the 1 again here */
13234                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13235                 struct wireless_dev *tmp;
13236
13237                 if (!wiphy)
13238                         return -ENODEV;
13239                 *rdev = wiphy_to_rdev(wiphy);
13240                 *wdev = NULL;
13241
13242                 if (cb->args[1]) {
13243                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13244                                 if (tmp->identifier == cb->args[1] - 1) {
13245                                         *wdev = tmp;
13246                                         break;
13247                                 }
13248                         }
13249                 }
13250
13251                 /* keep rtnl locked in successful case */
13252                 return 0;
13253         }
13254
13255         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13256         if (!attrbuf)
13257                 return -ENOMEM;
13258
13259         err = nlmsg_parse_deprecated(cb->nlh,
13260                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13261                                      attrbuf, nl80211_fam.maxattr,
13262                                      nl80211_policy, NULL);
13263         if (err)
13264                 goto out;
13265
13266         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13267             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13268                 err = -EINVAL;
13269                 goto out;
13270         }
13271
13272         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13273         if (IS_ERR(*wdev))
13274                 *wdev = NULL;
13275
13276         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13277         if (IS_ERR(*rdev)) {
13278                 err = PTR_ERR(*rdev);
13279                 goto out;
13280         }
13281
13282         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13283         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13284
13285         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13286                 const struct wiphy_vendor_command *vcmd;
13287
13288                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13289
13290                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13291                         continue;
13292
13293                 if (!vcmd->dumpit) {
13294                         err = -EOPNOTSUPP;
13295                         goto out;
13296                 }
13297
13298                 vcmd_idx = i;
13299                 break;
13300         }
13301
13302         if (vcmd_idx < 0) {
13303                 err = -EOPNOTSUPP;
13304                 goto out;
13305         }
13306
13307         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13308                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13309                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13310
13311                 err = nl80211_vendor_check_policy(
13312                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13313                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13314                                 cb->extack);
13315                 if (err)
13316                         goto out;
13317         }
13318
13319         /* 0 is the first index - add 1 to parse only once */
13320         cb->args[0] = (*rdev)->wiphy_idx + 1;
13321         /* add 1 to know if it was NULL */
13322         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13323         cb->args[2] = vcmd_idx;
13324         cb->args[3] = (unsigned long)data;
13325         cb->args[4] = data_len;
13326
13327         /* keep rtnl locked in successful case */
13328         err = 0;
13329 out:
13330         kfree(attrbuf);
13331         return err;
13332 }
13333
13334 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13335                                    struct netlink_callback *cb)
13336 {
13337         struct cfg80211_registered_device *rdev;
13338         struct wireless_dev *wdev;
13339         unsigned int vcmd_idx;
13340         const struct wiphy_vendor_command *vcmd;
13341         void *data;
13342         int data_len;
13343         int err;
13344         struct nlattr *vendor_data;
13345
13346         rtnl_lock();
13347         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13348         if (err)
13349                 goto out;
13350
13351         vcmd_idx = cb->args[2];
13352         data = (void *)cb->args[3];
13353         data_len = cb->args[4];
13354         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13355
13356         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13357                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13358                 if (!wdev) {
13359                         err = -EINVAL;
13360                         goto out;
13361                 }
13362                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13363                     !wdev->netdev) {
13364                         err = -EINVAL;
13365                         goto out;
13366                 }
13367
13368                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13369                         if (!wdev_running(wdev)) {
13370                                 err = -ENETDOWN;
13371                                 goto out;
13372                         }
13373                 }
13374         }
13375
13376         while (1) {
13377                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13378                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13379                                            NL80211_CMD_VENDOR);
13380                 if (!hdr)
13381                         break;
13382
13383                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13384                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13385                                                wdev_id(wdev),
13386                                                NL80211_ATTR_PAD))) {
13387                         genlmsg_cancel(skb, hdr);
13388                         break;
13389                 }
13390
13391                 vendor_data = nla_nest_start_noflag(skb,
13392                                                     NL80211_ATTR_VENDOR_DATA);
13393                 if (!vendor_data) {
13394                         genlmsg_cancel(skb, hdr);
13395                         break;
13396                 }
13397
13398                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13399                                    (unsigned long *)&cb->args[5]);
13400                 nla_nest_end(skb, vendor_data);
13401
13402                 if (err == -ENOBUFS || err == -ENOENT) {
13403                         genlmsg_cancel(skb, hdr);
13404                         break;
13405                 } else if (err) {
13406                         genlmsg_cancel(skb, hdr);
13407                         goto out;
13408                 }
13409
13410                 genlmsg_end(skb, hdr);
13411         }
13412
13413         err = skb->len;
13414  out:
13415         rtnl_unlock();
13416         return err;
13417 }
13418
13419 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13420                                            enum nl80211_commands cmd,
13421                                            enum nl80211_attrs attr,
13422                                            int approxlen)
13423 {
13424         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13425
13426         if (WARN_ON(!rdev->cur_cmd_info))
13427                 return NULL;
13428
13429         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13430                                            rdev->cur_cmd_info->snd_portid,
13431                                            rdev->cur_cmd_info->snd_seq,
13432                                            cmd, attr, NULL, GFP_KERNEL);
13433 }
13434 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13435
13436 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13437 {
13438         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13439         void *hdr = ((void **)skb->cb)[1];
13440         struct nlattr *data = ((void **)skb->cb)[2];
13441
13442         /* clear CB data for netlink core to own from now on */
13443         memset(skb->cb, 0, sizeof(skb->cb));
13444
13445         if (WARN_ON(!rdev->cur_cmd_info)) {
13446                 kfree_skb(skb);
13447                 return -EINVAL;
13448         }
13449
13450         nla_nest_end(skb, data);
13451         genlmsg_end(skb, hdr);
13452         return genlmsg_reply(skb, rdev->cur_cmd_info);
13453 }
13454 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13455
13456 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13457 {
13458         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13459
13460         if (WARN_ON(!rdev->cur_cmd_info))
13461                 return 0;
13462
13463         return rdev->cur_cmd_info->snd_portid;
13464 }
13465 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13466
13467 static int nl80211_set_qos_map(struct sk_buff *skb,
13468                                struct genl_info *info)
13469 {
13470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13471         struct cfg80211_qos_map *qos_map = NULL;
13472         struct net_device *dev = info->user_ptr[1];
13473         u8 *pos, len, num_des, des_len, des;
13474         int ret;
13475
13476         if (!rdev->ops->set_qos_map)
13477                 return -EOPNOTSUPP;
13478
13479         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13480                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13481                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13482
13483                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13484                     len > IEEE80211_QOS_MAP_LEN_MAX)
13485                         return -EINVAL;
13486
13487                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13488                 if (!qos_map)
13489                         return -ENOMEM;
13490
13491                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13492                 if (num_des) {
13493                         des_len = num_des *
13494                                 sizeof(struct cfg80211_dscp_exception);
13495                         memcpy(qos_map->dscp_exception, pos, des_len);
13496                         qos_map->num_des = num_des;
13497                         for (des = 0; des < num_des; des++) {
13498                                 if (qos_map->dscp_exception[des].up > 7) {
13499                                         kfree(qos_map);
13500                                         return -EINVAL;
13501                                 }
13502                         }
13503                         pos += des_len;
13504                 }
13505                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13506         }
13507
13508         wdev_lock(dev->ieee80211_ptr);
13509         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13510         if (!ret)
13511                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13512         wdev_unlock(dev->ieee80211_ptr);
13513
13514         kfree(qos_map);
13515         return ret;
13516 }
13517
13518 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13519 {
13520         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13521         struct net_device *dev = info->user_ptr[1];
13522         struct wireless_dev *wdev = dev->ieee80211_ptr;
13523         const u8 *peer;
13524         u8 tsid, up;
13525         u16 admitted_time = 0;
13526         int err;
13527
13528         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13529                 return -EOPNOTSUPP;
13530
13531         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13532             !info->attrs[NL80211_ATTR_USER_PRIO])
13533                 return -EINVAL;
13534
13535         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13536         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13537
13538         /* WMM uses TIDs 0-7 even for TSPEC */
13539         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13540                 /* TODO: handle 802.11 TSPEC/admission control
13541                  * need more attributes for that (e.g. BA session requirement);
13542                  * change the WMM adminssion test above to allow both then
13543                  */
13544                 return -EINVAL;
13545         }
13546
13547         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13548
13549         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13550                 admitted_time =
13551                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13552                 if (!admitted_time)
13553                         return -EINVAL;
13554         }
13555
13556         wdev_lock(wdev);
13557         switch (wdev->iftype) {
13558         case NL80211_IFTYPE_STATION:
13559         case NL80211_IFTYPE_P2P_CLIENT:
13560                 if (wdev->current_bss)
13561                         break;
13562                 err = -ENOTCONN;
13563                 goto out;
13564         default:
13565                 err = -EOPNOTSUPP;
13566                 goto out;
13567         }
13568
13569         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13570
13571  out:
13572         wdev_unlock(wdev);
13573         return err;
13574 }
13575
13576 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13577 {
13578         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13579         struct net_device *dev = info->user_ptr[1];
13580         struct wireless_dev *wdev = dev->ieee80211_ptr;
13581         const u8 *peer;
13582         u8 tsid;
13583         int err;
13584
13585         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13586                 return -EINVAL;
13587
13588         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13589         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13590
13591         wdev_lock(wdev);
13592         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13593         wdev_unlock(wdev);
13594
13595         return err;
13596 }
13597
13598 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13599                                        struct genl_info *info)
13600 {
13601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13602         struct net_device *dev = info->user_ptr[1];
13603         struct wireless_dev *wdev = dev->ieee80211_ptr;
13604         struct cfg80211_chan_def chandef = {};
13605         const u8 *addr;
13606         u8 oper_class;
13607         int err;
13608
13609         if (!rdev->ops->tdls_channel_switch ||
13610             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13611                 return -EOPNOTSUPP;
13612
13613         switch (dev->ieee80211_ptr->iftype) {
13614         case NL80211_IFTYPE_STATION:
13615         case NL80211_IFTYPE_P2P_CLIENT:
13616                 break;
13617         default:
13618                 return -EOPNOTSUPP;
13619         }
13620
13621         if (!info->attrs[NL80211_ATTR_MAC] ||
13622             !info->attrs[NL80211_ATTR_OPER_CLASS])
13623                 return -EINVAL;
13624
13625         err = nl80211_parse_chandef(rdev, info, &chandef);
13626         if (err)
13627                 return err;
13628
13629         /*
13630          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13631          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13632          * specification is not defined for them.
13633          */
13634         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13635             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13636             chandef.width != NL80211_CHAN_WIDTH_20)
13637                 return -EINVAL;
13638
13639         /* we will be active on the TDLS link */
13640         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13641                                            wdev->iftype))
13642                 return -EINVAL;
13643
13644         /* don't allow switching to DFS channels */
13645         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13646                 return -EINVAL;
13647
13648         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13649         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13650
13651         wdev_lock(wdev);
13652         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13653         wdev_unlock(wdev);
13654
13655         return err;
13656 }
13657
13658 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13659                                               struct genl_info *info)
13660 {
13661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13662         struct net_device *dev = info->user_ptr[1];
13663         struct wireless_dev *wdev = dev->ieee80211_ptr;
13664         const u8 *addr;
13665
13666         if (!rdev->ops->tdls_channel_switch ||
13667             !rdev->ops->tdls_cancel_channel_switch ||
13668             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13669                 return -EOPNOTSUPP;
13670
13671         switch (dev->ieee80211_ptr->iftype) {
13672         case NL80211_IFTYPE_STATION:
13673         case NL80211_IFTYPE_P2P_CLIENT:
13674                 break;
13675         default:
13676                 return -EOPNOTSUPP;
13677         }
13678
13679         if (!info->attrs[NL80211_ATTR_MAC])
13680                 return -EINVAL;
13681
13682         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13683
13684         wdev_lock(wdev);
13685         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13686         wdev_unlock(wdev);
13687
13688         return 0;
13689 }
13690
13691 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13692                                             struct genl_info *info)
13693 {
13694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13695         struct net_device *dev = info->user_ptr[1];
13696         struct wireless_dev *wdev = dev->ieee80211_ptr;
13697         const struct nlattr *nla;
13698         bool enabled;
13699
13700         if (!rdev->ops->set_multicast_to_unicast)
13701                 return -EOPNOTSUPP;
13702
13703         if (wdev->iftype != NL80211_IFTYPE_AP &&
13704             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13705                 return -EOPNOTSUPP;
13706
13707         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13708         enabled = nla_get_flag(nla);
13709
13710         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13711 }
13712
13713 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13714 {
13715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13716         struct net_device *dev = info->user_ptr[1];
13717         struct wireless_dev *wdev = dev->ieee80211_ptr;
13718         struct cfg80211_pmk_conf pmk_conf = {};
13719         int ret;
13720
13721         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13722             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13723                 return -EOPNOTSUPP;
13724
13725         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13726                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13727                 return -EOPNOTSUPP;
13728
13729         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13730                 return -EINVAL;
13731
13732         wdev_lock(wdev);
13733         if (!wdev->current_bss) {
13734                 ret = -ENOTCONN;
13735                 goto out;
13736         }
13737
13738         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13739         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13740                 ret = -EINVAL;
13741                 goto out;
13742         }
13743
13744         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13745         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13746         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13747             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13748                 ret = -EINVAL;
13749                 goto out;
13750         }
13751
13752         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13753                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13754
13755                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13756                         ret = -EINVAL;
13757                         goto out;
13758                 }
13759
13760                 pmk_conf.pmk_r0_name =
13761                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13762         }
13763
13764         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13765 out:
13766         wdev_unlock(wdev);
13767         return ret;
13768 }
13769
13770 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13771 {
13772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13773         struct net_device *dev = info->user_ptr[1];
13774         struct wireless_dev *wdev = dev->ieee80211_ptr;
13775         const u8 *aa;
13776         int ret;
13777
13778         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13779             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13780                 return -EOPNOTSUPP;
13781
13782         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13783                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13784                 return -EOPNOTSUPP;
13785
13786         if (!info->attrs[NL80211_ATTR_MAC])
13787                 return -EINVAL;
13788
13789         wdev_lock(wdev);
13790         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13791         ret = rdev_del_pmk(rdev, dev, aa);
13792         wdev_unlock(wdev);
13793
13794         return ret;
13795 }
13796
13797 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13798 {
13799         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13800         struct net_device *dev = info->user_ptr[1];
13801         struct cfg80211_external_auth_params params;
13802
13803         if (!rdev->ops->external_auth)
13804                 return -EOPNOTSUPP;
13805
13806         if (!info->attrs[NL80211_ATTR_SSID] &&
13807             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13808             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13809                 return -EINVAL;
13810
13811         if (!info->attrs[NL80211_ATTR_BSSID])
13812                 return -EINVAL;
13813
13814         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13815                 return -EINVAL;
13816
13817         memset(&params, 0, sizeof(params));
13818
13819         if (info->attrs[NL80211_ATTR_SSID]) {
13820                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13821                 if (params.ssid.ssid_len == 0 ||
13822                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13823                         return -EINVAL;
13824                 memcpy(params.ssid.ssid,
13825                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13826                        params.ssid.ssid_len);
13827         }
13828
13829         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13830                ETH_ALEN);
13831
13832         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13833
13834         if (info->attrs[NL80211_ATTR_PMKID])
13835                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13836
13837         return rdev_external_auth(rdev, dev, &params);
13838 }
13839
13840 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13841 {
13842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13843         struct net_device *dev = info->user_ptr[1];
13844         struct wireless_dev *wdev = dev->ieee80211_ptr;
13845         const u8 *buf;
13846         size_t len;
13847         u8 *dest;
13848         u16 proto;
13849         bool noencrypt;
13850         int err;
13851
13852         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13853                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13854                 return -EOPNOTSUPP;
13855
13856         if (!rdev->ops->tx_control_port)
13857                 return -EOPNOTSUPP;
13858
13859         if (!info->attrs[NL80211_ATTR_FRAME] ||
13860             !info->attrs[NL80211_ATTR_MAC] ||
13861             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13862                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13863                 return -EINVAL;
13864         }
13865
13866         wdev_lock(wdev);
13867
13868         switch (wdev->iftype) {
13869         case NL80211_IFTYPE_AP:
13870         case NL80211_IFTYPE_P2P_GO:
13871         case NL80211_IFTYPE_MESH_POINT:
13872                 break;
13873         case NL80211_IFTYPE_ADHOC:
13874         case NL80211_IFTYPE_STATION:
13875         case NL80211_IFTYPE_P2P_CLIENT:
13876                 if (wdev->current_bss)
13877                         break;
13878                 err = -ENOTCONN;
13879                 goto out;
13880         default:
13881                 err = -EOPNOTSUPP;
13882                 goto out;
13883         }
13884
13885         wdev_unlock(wdev);
13886
13887         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13888         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13889         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13890         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13891         noencrypt =
13892                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13893
13894         return rdev_tx_control_port(rdev, dev, buf, len,
13895                                     dest, cpu_to_be16(proto), noencrypt);
13896
13897  out:
13898         wdev_unlock(wdev);
13899         return err;
13900 }
13901
13902 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13903                                            struct genl_info *info)
13904 {
13905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13906         struct net_device *dev = info->user_ptr[1];
13907         struct wireless_dev *wdev = dev->ieee80211_ptr;
13908         struct cfg80211_ftm_responder_stats ftm_stats = {};
13909         struct sk_buff *msg;
13910         void *hdr;
13911         struct nlattr *ftm_stats_attr;
13912         int err;
13913
13914         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13915                 return -EOPNOTSUPP;
13916
13917         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13918         if (err)
13919                 return err;
13920
13921         if (!ftm_stats.filled)
13922                 return -ENODATA;
13923
13924         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13925         if (!msg)
13926                 return -ENOMEM;
13927
13928         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13929                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13930         if (!hdr)
13931                 goto nla_put_failure;
13932
13933         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13934                 goto nla_put_failure;
13935
13936         ftm_stats_attr = nla_nest_start_noflag(msg,
13937                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13938         if (!ftm_stats_attr)
13939                 goto nla_put_failure;
13940
13941 #define SET_FTM(field, name, type)                                       \
13942         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13943             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13944                              ftm_stats.field))                           \
13945                 goto nla_put_failure; } while (0)
13946 #define SET_FTM_U64(field, name)                                         \
13947         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13948             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13949                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13950                 goto nla_put_failure; } while (0)
13951
13952         SET_FTM(success_num, SUCCESS_NUM, u32);
13953         SET_FTM(partial_num, PARTIAL_NUM, u32);
13954         SET_FTM(failed_num, FAILED_NUM, u32);
13955         SET_FTM(asap_num, ASAP_NUM, u32);
13956         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13957         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13958         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13959         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13960         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13961 #undef SET_FTM
13962
13963         nla_nest_end(msg, ftm_stats_attr);
13964
13965         genlmsg_end(msg, hdr);
13966         return genlmsg_reply(msg, info);
13967
13968 nla_put_failure:
13969         nlmsg_free(msg);
13970         return -ENOBUFS;
13971 }
13972
13973 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13974 {
13975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13976         struct cfg80211_update_owe_info owe_info;
13977         struct net_device *dev = info->user_ptr[1];
13978
13979         if (!rdev->ops->update_owe_info)
13980                 return -EOPNOTSUPP;
13981
13982         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13983             !info->attrs[NL80211_ATTR_MAC])
13984                 return -EINVAL;
13985
13986         memset(&owe_info, 0, sizeof(owe_info));
13987         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13988         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13989
13990         if (info->attrs[NL80211_ATTR_IE]) {
13991                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13992                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13993         }
13994
13995         return rdev_update_owe_info(rdev, dev, &owe_info);
13996 }
13997
13998 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13999 {
14000         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14001         struct net_device *dev = info->user_ptr[1];
14002         struct wireless_dev *wdev = dev->ieee80211_ptr;
14003         struct station_info sinfo = {};
14004         const u8 *buf;
14005         size_t len;
14006         u8 *dest;
14007         int err;
14008
14009         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14010                 return -EOPNOTSUPP;
14011
14012         if (!info->attrs[NL80211_ATTR_MAC] ||
14013             !info->attrs[NL80211_ATTR_FRAME]) {
14014                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14015                 return -EINVAL;
14016         }
14017
14018         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14019                 return -EOPNOTSUPP;
14020
14021         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14022         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14023         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14024
14025         if (len < sizeof(struct ethhdr))
14026                 return -EINVAL;
14027
14028         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14029             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14030                 return -EINVAL;
14031
14032         err = rdev_get_station(rdev, dev, dest, &sinfo);
14033         if (err)
14034                 return err;
14035
14036         cfg80211_sinfo_release_content(&sinfo);
14037
14038         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14039 }
14040
14041 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14042                           struct nlattr *attrs[], struct net_device *dev,
14043                           struct cfg80211_tid_cfg *tid_conf,
14044                           struct genl_info *info, const u8 *peer)
14045 {
14046         struct netlink_ext_ack *extack = info->extack;
14047         u64 mask;
14048         int err;
14049
14050         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14051                 return -EINVAL;
14052
14053         tid_conf->config_override =
14054                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14055         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14056
14057         if (tid_conf->config_override) {
14058                 if (rdev->ops->reset_tid_config) {
14059                         err = rdev_reset_tid_config(rdev, dev, peer,
14060                                                     tid_conf->tids);
14061                         /* If peer is there no other configuration will be
14062                          * allowed
14063                          */
14064                         if (err || peer)
14065                                 return err;
14066                 } else {
14067                         return -EINVAL;
14068                 }
14069         }
14070
14071         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14072                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14073                 tid_conf->noack =
14074                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14075         }
14076
14077         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14078                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14079                 tid_conf->retry_short =
14080                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14081
14082                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14083                         return -EINVAL;
14084         }
14085
14086         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14087                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14088                 tid_conf->retry_long =
14089                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14090
14091                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14092                         return -EINVAL;
14093         }
14094
14095         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14096                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14097                 tid_conf->ampdu =
14098                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14099         }
14100
14101         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14102                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14103                 tid_conf->rtscts =
14104                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14105         }
14106
14107         if (peer)
14108                 mask = rdev->wiphy.tid_config_support.peer;
14109         else
14110                 mask = rdev->wiphy.tid_config_support.vif;
14111
14112         if (tid_conf->mask & ~mask) {
14113                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14114                 return -ENOTSUPP;
14115         }
14116
14117         return 0;
14118 }
14119
14120 static int nl80211_set_tid_config(struct sk_buff *skb,
14121                                   struct genl_info *info)
14122 {
14123         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14124         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14125         struct net_device *dev = info->user_ptr[1];
14126         struct cfg80211_tid_config *tid_config;
14127         struct nlattr *tid;
14128         int conf_idx = 0, rem_conf;
14129         int ret = -EINVAL;
14130         u32 num_conf = 0;
14131
14132         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14133                 return -EINVAL;
14134
14135         if (!rdev->ops->set_tid_config)
14136                 return -EOPNOTSUPP;
14137
14138         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14139                             rem_conf)
14140                 num_conf++;
14141
14142         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14143                              GFP_KERNEL);
14144         if (!tid_config)
14145                 return -ENOMEM;
14146
14147         tid_config->n_tid_conf = num_conf;
14148
14149         if (info->attrs[NL80211_ATTR_MAC])
14150                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14151
14152         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14153                             rem_conf) {
14154                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14155                                        tid, NULL, NULL);
14156
14157                 if (ret)
14158                         goto bad_tid_conf;
14159
14160                 ret = parse_tid_conf(rdev, attrs, dev,
14161                                      &tid_config->tid_conf[conf_idx],
14162                                      info, tid_config->peer);
14163                 if (ret)
14164                         goto bad_tid_conf;
14165
14166                 conf_idx++;
14167         }
14168
14169         ret = rdev_set_tid_config(rdev, dev, tid_config);
14170
14171 bad_tid_conf:
14172         kfree(tid_config);
14173         return ret;
14174 }
14175
14176 #define NL80211_FLAG_NEED_WIPHY         0x01
14177 #define NL80211_FLAG_NEED_NETDEV        0x02
14178 #define NL80211_FLAG_NEED_RTNL          0x04
14179 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14180 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14181                                          NL80211_FLAG_CHECK_NETDEV_UP)
14182 #define NL80211_FLAG_NEED_WDEV          0x10
14183 /* If a netdev is associated, it must be UP, P2P must be started */
14184 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14185                                          NL80211_FLAG_CHECK_NETDEV_UP)
14186 #define NL80211_FLAG_CLEAR_SKB          0x20
14187
14188 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14189                             struct genl_info *info)
14190 {
14191         struct cfg80211_registered_device *rdev;
14192         struct wireless_dev *wdev;
14193         struct net_device *dev;
14194         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14195
14196         if (rtnl)
14197                 rtnl_lock();
14198
14199         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14200                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14201                 if (IS_ERR(rdev)) {
14202                         if (rtnl)
14203                                 rtnl_unlock();
14204                         return PTR_ERR(rdev);
14205                 }
14206                 info->user_ptr[0] = rdev;
14207         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14208                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14209                 ASSERT_RTNL();
14210
14211                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14212                                                   info->attrs);
14213                 if (IS_ERR(wdev)) {
14214                         if (rtnl)
14215                                 rtnl_unlock();
14216                         return PTR_ERR(wdev);
14217                 }
14218
14219                 dev = wdev->netdev;
14220                 rdev = wiphy_to_rdev(wdev->wiphy);
14221
14222                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14223                         if (!dev) {
14224                                 if (rtnl)
14225                                         rtnl_unlock();
14226                                 return -EINVAL;
14227                         }
14228
14229                         info->user_ptr[1] = dev;
14230                 } else {
14231                         info->user_ptr[1] = wdev;
14232                 }
14233
14234                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14235                     !wdev_running(wdev)) {
14236                         if (rtnl)
14237                                 rtnl_unlock();
14238                         return -ENETDOWN;
14239                 }
14240
14241                 if (dev)
14242                         dev_hold(dev);
14243
14244                 info->user_ptr[0] = rdev;
14245         }
14246
14247         return 0;
14248 }
14249
14250 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14251                               struct genl_info *info)
14252 {
14253         if (info->user_ptr[1]) {
14254                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14255                         struct wireless_dev *wdev = info->user_ptr[1];
14256
14257                         if (wdev->netdev)
14258                                 dev_put(wdev->netdev);
14259                 } else {
14260                         dev_put(info->user_ptr[1]);
14261                 }
14262         }
14263
14264         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14265                 rtnl_unlock();
14266
14267         /* If needed, clear the netlink message payload from the SKB
14268          * as it might contain key data that shouldn't stick around on
14269          * the heap after the SKB is freed. The netlink message header
14270          * is still needed for further processing, so leave it intact.
14271          */
14272         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14273                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14274
14275                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14276         }
14277 }
14278
14279 static const struct genl_ops nl80211_ops[] = {
14280         {
14281                 .cmd = NL80211_CMD_GET_WIPHY,
14282                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14283                 .doit = nl80211_get_wiphy,
14284                 .dumpit = nl80211_dump_wiphy,
14285                 .done = nl80211_dump_wiphy_done,
14286                 /* can be retrieved by unprivileged users */
14287                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14288                                   NL80211_FLAG_NEED_RTNL,
14289         },
14290         {
14291                 .cmd = NL80211_CMD_SET_WIPHY,
14292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14293                 .doit = nl80211_set_wiphy,
14294                 .flags = GENL_UNS_ADMIN_PERM,
14295                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14296         },
14297         {
14298                 .cmd = NL80211_CMD_GET_INTERFACE,
14299                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14300                 .doit = nl80211_get_interface,
14301                 .dumpit = nl80211_dump_interface,
14302                 /* can be retrieved by unprivileged users */
14303                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14304                                   NL80211_FLAG_NEED_RTNL,
14305         },
14306         {
14307                 .cmd = NL80211_CMD_SET_INTERFACE,
14308                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14309                 .doit = nl80211_set_interface,
14310                 .flags = GENL_UNS_ADMIN_PERM,
14311                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14312                                   NL80211_FLAG_NEED_RTNL,
14313         },
14314         {
14315                 .cmd = NL80211_CMD_NEW_INTERFACE,
14316                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14317                 .doit = nl80211_new_interface,
14318                 .flags = GENL_UNS_ADMIN_PERM,
14319                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14320                                   NL80211_FLAG_NEED_RTNL,
14321         },
14322         {
14323                 .cmd = NL80211_CMD_DEL_INTERFACE,
14324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14325                 .doit = nl80211_del_interface,
14326                 .flags = GENL_UNS_ADMIN_PERM,
14327                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14328                                   NL80211_FLAG_NEED_RTNL,
14329         },
14330         {
14331                 .cmd = NL80211_CMD_GET_KEY,
14332                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14333                 .doit = nl80211_get_key,
14334                 .flags = GENL_UNS_ADMIN_PERM,
14335                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14336                                   NL80211_FLAG_NEED_RTNL,
14337         },
14338         {
14339                 .cmd = NL80211_CMD_SET_KEY,
14340                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14341                 .doit = nl80211_set_key,
14342                 .flags = GENL_UNS_ADMIN_PERM,
14343                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14344                                   NL80211_FLAG_NEED_RTNL |
14345                                   NL80211_FLAG_CLEAR_SKB,
14346         },
14347         {
14348                 .cmd = NL80211_CMD_NEW_KEY,
14349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14350                 .doit = nl80211_new_key,
14351                 .flags = GENL_UNS_ADMIN_PERM,
14352                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14353                                   NL80211_FLAG_NEED_RTNL |
14354                                   NL80211_FLAG_CLEAR_SKB,
14355         },
14356         {
14357                 .cmd = NL80211_CMD_DEL_KEY,
14358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14359                 .doit = nl80211_del_key,
14360                 .flags = GENL_UNS_ADMIN_PERM,
14361                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14362                                   NL80211_FLAG_NEED_RTNL,
14363         },
14364         {
14365                 .cmd = NL80211_CMD_SET_BEACON,
14366                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14367                 .flags = GENL_UNS_ADMIN_PERM,
14368                 .doit = nl80211_set_beacon,
14369                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14370                                   NL80211_FLAG_NEED_RTNL,
14371         },
14372         {
14373                 .cmd = NL80211_CMD_START_AP,
14374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14375                 .flags = GENL_UNS_ADMIN_PERM,
14376                 .doit = nl80211_start_ap,
14377                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14378                                   NL80211_FLAG_NEED_RTNL,
14379         },
14380         {
14381                 .cmd = NL80211_CMD_STOP_AP,
14382                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14383                 .flags = GENL_UNS_ADMIN_PERM,
14384                 .doit = nl80211_stop_ap,
14385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14386                                   NL80211_FLAG_NEED_RTNL,
14387         },
14388         {
14389                 .cmd = NL80211_CMD_GET_STATION,
14390                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14391                 .doit = nl80211_get_station,
14392                 .dumpit = nl80211_dump_station,
14393                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14394                                   NL80211_FLAG_NEED_RTNL,
14395         },
14396         {
14397                 .cmd = NL80211_CMD_SET_STATION,
14398                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14399                 .doit = nl80211_set_station,
14400                 .flags = GENL_UNS_ADMIN_PERM,
14401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14402                                   NL80211_FLAG_NEED_RTNL,
14403         },
14404         {
14405                 .cmd = NL80211_CMD_NEW_STATION,
14406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14407                 .doit = nl80211_new_station,
14408                 .flags = GENL_UNS_ADMIN_PERM,
14409                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14410                                   NL80211_FLAG_NEED_RTNL,
14411         },
14412         {
14413                 .cmd = NL80211_CMD_DEL_STATION,
14414                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14415                 .doit = nl80211_del_station,
14416                 .flags = GENL_UNS_ADMIN_PERM,
14417                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14418                                   NL80211_FLAG_NEED_RTNL,
14419         },
14420         {
14421                 .cmd = NL80211_CMD_GET_MPATH,
14422                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14423                 .doit = nl80211_get_mpath,
14424                 .dumpit = nl80211_dump_mpath,
14425                 .flags = GENL_UNS_ADMIN_PERM,
14426                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14427                                   NL80211_FLAG_NEED_RTNL,
14428         },
14429         {
14430                 .cmd = NL80211_CMD_GET_MPP,
14431                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14432                 .doit = nl80211_get_mpp,
14433                 .dumpit = nl80211_dump_mpp,
14434                 .flags = GENL_UNS_ADMIN_PERM,
14435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14436                                   NL80211_FLAG_NEED_RTNL,
14437         },
14438         {
14439                 .cmd = NL80211_CMD_SET_MPATH,
14440                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14441                 .doit = nl80211_set_mpath,
14442                 .flags = GENL_UNS_ADMIN_PERM,
14443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14444                                   NL80211_FLAG_NEED_RTNL,
14445         },
14446         {
14447                 .cmd = NL80211_CMD_NEW_MPATH,
14448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14449                 .doit = nl80211_new_mpath,
14450                 .flags = GENL_UNS_ADMIN_PERM,
14451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14452                                   NL80211_FLAG_NEED_RTNL,
14453         },
14454         {
14455                 .cmd = NL80211_CMD_DEL_MPATH,
14456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14457                 .doit = nl80211_del_mpath,
14458                 .flags = GENL_UNS_ADMIN_PERM,
14459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14460                                   NL80211_FLAG_NEED_RTNL,
14461         },
14462         {
14463                 .cmd = NL80211_CMD_SET_BSS,
14464                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14465                 .doit = nl80211_set_bss,
14466                 .flags = GENL_UNS_ADMIN_PERM,
14467                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14468                                   NL80211_FLAG_NEED_RTNL,
14469         },
14470         {
14471                 .cmd = NL80211_CMD_GET_REG,
14472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14473                 .doit = nl80211_get_reg_do,
14474                 .dumpit = nl80211_get_reg_dump,
14475                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14476                 /* can be retrieved by unprivileged users */
14477         },
14478 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14479         {
14480                 .cmd = NL80211_CMD_SET_REG,
14481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14482                 .doit = nl80211_set_reg,
14483                 .flags = GENL_ADMIN_PERM,
14484                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14485         },
14486 #endif
14487         {
14488                 .cmd = NL80211_CMD_REQ_SET_REG,
14489                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14490                 .doit = nl80211_req_set_reg,
14491                 .flags = GENL_ADMIN_PERM,
14492         },
14493         {
14494                 .cmd = NL80211_CMD_RELOAD_REGDB,
14495                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14496                 .doit = nl80211_reload_regdb,
14497                 .flags = GENL_ADMIN_PERM,
14498         },
14499         {
14500                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14501                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14502                 .doit = nl80211_get_mesh_config,
14503                 /* can be retrieved by unprivileged users */
14504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14505                                   NL80211_FLAG_NEED_RTNL,
14506         },
14507         {
14508                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14510                 .doit = nl80211_update_mesh_config,
14511                 .flags = GENL_UNS_ADMIN_PERM,
14512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14513                                   NL80211_FLAG_NEED_RTNL,
14514         },
14515         {
14516                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14517                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14518                 .doit = nl80211_trigger_scan,
14519                 .flags = GENL_UNS_ADMIN_PERM,
14520                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14521                                   NL80211_FLAG_NEED_RTNL,
14522         },
14523         {
14524                 .cmd = NL80211_CMD_ABORT_SCAN,
14525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14526                 .doit = nl80211_abort_scan,
14527                 .flags = GENL_UNS_ADMIN_PERM,
14528                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14529                                   NL80211_FLAG_NEED_RTNL,
14530         },
14531         {
14532                 .cmd = NL80211_CMD_GET_SCAN,
14533                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14534                 .dumpit = nl80211_dump_scan,
14535         },
14536         {
14537                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14538                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14539                 .doit = nl80211_start_sched_scan,
14540                 .flags = GENL_UNS_ADMIN_PERM,
14541                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14542                                   NL80211_FLAG_NEED_RTNL,
14543         },
14544         {
14545                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14547                 .doit = nl80211_stop_sched_scan,
14548                 .flags = GENL_UNS_ADMIN_PERM,
14549                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14550                                   NL80211_FLAG_NEED_RTNL,
14551         },
14552         {
14553                 .cmd = NL80211_CMD_AUTHENTICATE,
14554                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14555                 .doit = nl80211_authenticate,
14556                 .flags = GENL_UNS_ADMIN_PERM,
14557                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14558                                   NL80211_FLAG_NEED_RTNL |
14559                                   NL80211_FLAG_CLEAR_SKB,
14560         },
14561         {
14562                 .cmd = NL80211_CMD_ASSOCIATE,
14563                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14564                 .doit = nl80211_associate,
14565                 .flags = GENL_UNS_ADMIN_PERM,
14566                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14567                                   NL80211_FLAG_NEED_RTNL |
14568                                   NL80211_FLAG_CLEAR_SKB,
14569         },
14570         {
14571                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14572                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14573                 .doit = nl80211_deauthenticate,
14574                 .flags = GENL_UNS_ADMIN_PERM,
14575                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14576                                   NL80211_FLAG_NEED_RTNL,
14577         },
14578         {
14579                 .cmd = NL80211_CMD_DISASSOCIATE,
14580                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14581                 .doit = nl80211_disassociate,
14582                 .flags = GENL_UNS_ADMIN_PERM,
14583                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14584                                   NL80211_FLAG_NEED_RTNL,
14585         },
14586         {
14587                 .cmd = NL80211_CMD_JOIN_IBSS,
14588                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14589                 .doit = nl80211_join_ibss,
14590                 .flags = GENL_UNS_ADMIN_PERM,
14591                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14592                                   NL80211_FLAG_NEED_RTNL,
14593         },
14594         {
14595                 .cmd = NL80211_CMD_LEAVE_IBSS,
14596                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14597                 .doit = nl80211_leave_ibss,
14598                 .flags = GENL_UNS_ADMIN_PERM,
14599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14600                                   NL80211_FLAG_NEED_RTNL,
14601         },
14602 #ifdef CONFIG_NL80211_TESTMODE
14603         {
14604                 .cmd = NL80211_CMD_TESTMODE,
14605                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14606                 .doit = nl80211_testmode_do,
14607                 .dumpit = nl80211_testmode_dump,
14608                 .flags = GENL_UNS_ADMIN_PERM,
14609                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14610                                   NL80211_FLAG_NEED_RTNL,
14611         },
14612 #endif
14613         {
14614                 .cmd = NL80211_CMD_CONNECT,
14615                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14616                 .doit = nl80211_connect,
14617                 .flags = GENL_UNS_ADMIN_PERM,
14618                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14619                                   NL80211_FLAG_NEED_RTNL |
14620                                   NL80211_FLAG_CLEAR_SKB,
14621         },
14622         {
14623                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14625                 .doit = nl80211_update_connect_params,
14626                 .flags = GENL_ADMIN_PERM,
14627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14628                                   NL80211_FLAG_NEED_RTNL |
14629                                   NL80211_FLAG_CLEAR_SKB,
14630         },
14631         {
14632                 .cmd = NL80211_CMD_DISCONNECT,
14633                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14634                 .doit = nl80211_disconnect,
14635                 .flags = GENL_UNS_ADMIN_PERM,
14636                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14637                                   NL80211_FLAG_NEED_RTNL,
14638         },
14639         {
14640                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14641                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14642                 .doit = nl80211_wiphy_netns,
14643                 .flags = GENL_UNS_ADMIN_PERM,
14644                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14645                                   NL80211_FLAG_NEED_RTNL,
14646         },
14647         {
14648                 .cmd = NL80211_CMD_GET_SURVEY,
14649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14650                 .dumpit = nl80211_dump_survey,
14651         },
14652         {
14653                 .cmd = NL80211_CMD_SET_PMKSA,
14654                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14655                 .doit = nl80211_setdel_pmksa,
14656                 .flags = GENL_UNS_ADMIN_PERM,
14657                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14658                                   NL80211_FLAG_NEED_RTNL |
14659                                   NL80211_FLAG_CLEAR_SKB,
14660         },
14661         {
14662                 .cmd = NL80211_CMD_DEL_PMKSA,
14663                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14664                 .doit = nl80211_setdel_pmksa,
14665                 .flags = GENL_UNS_ADMIN_PERM,
14666                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14667                                   NL80211_FLAG_NEED_RTNL,
14668         },
14669         {
14670                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14671                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14672                 .doit = nl80211_flush_pmksa,
14673                 .flags = GENL_UNS_ADMIN_PERM,
14674                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14675                                   NL80211_FLAG_NEED_RTNL,
14676         },
14677         {
14678                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14680                 .doit = nl80211_remain_on_channel,
14681                 .flags = GENL_UNS_ADMIN_PERM,
14682                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14683                                   NL80211_FLAG_NEED_RTNL,
14684         },
14685         {
14686                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14688                 .doit = nl80211_cancel_remain_on_channel,
14689                 .flags = GENL_UNS_ADMIN_PERM,
14690                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14691                                   NL80211_FLAG_NEED_RTNL,
14692         },
14693         {
14694                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14696                 .doit = nl80211_set_tx_bitrate_mask,
14697                 .flags = GENL_UNS_ADMIN_PERM,
14698                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14699                                   NL80211_FLAG_NEED_RTNL,
14700         },
14701         {
14702                 .cmd = NL80211_CMD_REGISTER_FRAME,
14703                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14704                 .doit = nl80211_register_mgmt,
14705                 .flags = GENL_UNS_ADMIN_PERM,
14706                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14707                                   NL80211_FLAG_NEED_RTNL,
14708         },
14709         {
14710                 .cmd = NL80211_CMD_FRAME,
14711                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14712                 .doit = nl80211_tx_mgmt,
14713                 .flags = GENL_UNS_ADMIN_PERM,
14714                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14715                                   NL80211_FLAG_NEED_RTNL,
14716         },
14717         {
14718                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14720                 .doit = nl80211_tx_mgmt_cancel_wait,
14721                 .flags = GENL_UNS_ADMIN_PERM,
14722                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14723                                   NL80211_FLAG_NEED_RTNL,
14724         },
14725         {
14726                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14727                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14728                 .doit = nl80211_set_power_save,
14729                 .flags = GENL_UNS_ADMIN_PERM,
14730                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14731                                   NL80211_FLAG_NEED_RTNL,
14732         },
14733         {
14734                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14736                 .doit = nl80211_get_power_save,
14737                 /* can be retrieved by unprivileged users */
14738                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14739                                   NL80211_FLAG_NEED_RTNL,
14740         },
14741         {
14742                 .cmd = NL80211_CMD_SET_CQM,
14743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14744                 .doit = nl80211_set_cqm,
14745                 .flags = GENL_UNS_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_SET_CHANNEL,
14751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14752                 .doit = nl80211_set_channel,
14753                 .flags = GENL_UNS_ADMIN_PERM,
14754                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14755                                   NL80211_FLAG_NEED_RTNL,
14756         },
14757         {
14758                 .cmd = NL80211_CMD_SET_WDS_PEER,
14759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14760                 .doit = nl80211_set_wds_peer,
14761                 .flags = GENL_UNS_ADMIN_PERM,
14762                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14763                                   NL80211_FLAG_NEED_RTNL,
14764         },
14765         {
14766                 .cmd = NL80211_CMD_JOIN_MESH,
14767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14768                 .doit = nl80211_join_mesh,
14769                 .flags = GENL_UNS_ADMIN_PERM,
14770                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14771                                   NL80211_FLAG_NEED_RTNL,
14772         },
14773         {
14774                 .cmd = NL80211_CMD_LEAVE_MESH,
14775                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14776                 .doit = nl80211_leave_mesh,
14777                 .flags = GENL_UNS_ADMIN_PERM,
14778                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14779                                   NL80211_FLAG_NEED_RTNL,
14780         },
14781         {
14782                 .cmd = NL80211_CMD_JOIN_OCB,
14783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14784                 .doit = nl80211_join_ocb,
14785                 .flags = GENL_UNS_ADMIN_PERM,
14786                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14787                                   NL80211_FLAG_NEED_RTNL,
14788         },
14789         {
14790                 .cmd = NL80211_CMD_LEAVE_OCB,
14791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14792                 .doit = nl80211_leave_ocb,
14793                 .flags = GENL_UNS_ADMIN_PERM,
14794                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14795                                   NL80211_FLAG_NEED_RTNL,
14796         },
14797 #ifdef CONFIG_PM
14798         {
14799                 .cmd = NL80211_CMD_GET_WOWLAN,
14800                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14801                 .doit = nl80211_get_wowlan,
14802                 /* can be retrieved by unprivileged users */
14803                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14804                                   NL80211_FLAG_NEED_RTNL,
14805         },
14806         {
14807                 .cmd = NL80211_CMD_SET_WOWLAN,
14808                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14809                 .doit = nl80211_set_wowlan,
14810                 .flags = GENL_UNS_ADMIN_PERM,
14811                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14812                                   NL80211_FLAG_NEED_RTNL,
14813         },
14814 #endif
14815         {
14816                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14817                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14818                 .doit = nl80211_set_rekey_data,
14819                 .flags = GENL_UNS_ADMIN_PERM,
14820                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14821                                   NL80211_FLAG_NEED_RTNL |
14822                                   NL80211_FLAG_CLEAR_SKB,
14823         },
14824         {
14825                 .cmd = NL80211_CMD_TDLS_MGMT,
14826                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14827                 .doit = nl80211_tdls_mgmt,
14828                 .flags = GENL_UNS_ADMIN_PERM,
14829                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14830                                   NL80211_FLAG_NEED_RTNL,
14831         },
14832         {
14833                 .cmd = NL80211_CMD_TDLS_OPER,
14834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14835                 .doit = nl80211_tdls_oper,
14836                 .flags = GENL_UNS_ADMIN_PERM,
14837                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14838                                   NL80211_FLAG_NEED_RTNL,
14839         },
14840         {
14841                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14842                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14843                 .doit = nl80211_register_unexpected_frame,
14844                 .flags = GENL_UNS_ADMIN_PERM,
14845                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14846                                   NL80211_FLAG_NEED_RTNL,
14847         },
14848         {
14849                 .cmd = NL80211_CMD_PROBE_CLIENT,
14850                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14851                 .doit = nl80211_probe_client,
14852                 .flags = GENL_UNS_ADMIN_PERM,
14853                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14854                                   NL80211_FLAG_NEED_RTNL,
14855         },
14856         {
14857                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14859                 .doit = nl80211_register_beacons,
14860                 .flags = GENL_UNS_ADMIN_PERM,
14861                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14862                                   NL80211_FLAG_NEED_RTNL,
14863         },
14864         {
14865                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14866                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14867                 .doit = nl80211_set_noack_map,
14868                 .flags = GENL_UNS_ADMIN_PERM,
14869                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14870                                   NL80211_FLAG_NEED_RTNL,
14871         },
14872         {
14873                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14875                 .doit = nl80211_start_p2p_device,
14876                 .flags = GENL_UNS_ADMIN_PERM,
14877                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14878                                   NL80211_FLAG_NEED_RTNL,
14879         },
14880         {
14881                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14883                 .doit = nl80211_stop_p2p_device,
14884                 .flags = GENL_UNS_ADMIN_PERM,
14885                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14886                                   NL80211_FLAG_NEED_RTNL,
14887         },
14888         {
14889                 .cmd = NL80211_CMD_START_NAN,
14890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14891                 .doit = nl80211_start_nan,
14892                 .flags = GENL_ADMIN_PERM,
14893                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14894                                   NL80211_FLAG_NEED_RTNL,
14895         },
14896         {
14897                 .cmd = NL80211_CMD_STOP_NAN,
14898                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14899                 .doit = nl80211_stop_nan,
14900                 .flags = GENL_ADMIN_PERM,
14901                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14902                                   NL80211_FLAG_NEED_RTNL,
14903         },
14904         {
14905                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14906                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14907                 .doit = nl80211_nan_add_func,
14908                 .flags = GENL_ADMIN_PERM,
14909                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14910                                   NL80211_FLAG_NEED_RTNL,
14911         },
14912         {
14913                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14915                 .doit = nl80211_nan_del_func,
14916                 .flags = GENL_ADMIN_PERM,
14917                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14918                                   NL80211_FLAG_NEED_RTNL,
14919         },
14920         {
14921                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14923                 .doit = nl80211_nan_change_config,
14924                 .flags = GENL_ADMIN_PERM,
14925                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14926                                   NL80211_FLAG_NEED_RTNL,
14927         },
14928         {
14929                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14930                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14931                 .doit = nl80211_set_mcast_rate,
14932                 .flags = GENL_UNS_ADMIN_PERM,
14933                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14934                                   NL80211_FLAG_NEED_RTNL,
14935         },
14936         {
14937                 .cmd = NL80211_CMD_SET_MAC_ACL,
14938                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14939                 .doit = nl80211_set_mac_acl,
14940                 .flags = GENL_UNS_ADMIN_PERM,
14941                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14942                                   NL80211_FLAG_NEED_RTNL,
14943         },
14944         {
14945                 .cmd = NL80211_CMD_RADAR_DETECT,
14946                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14947                 .doit = nl80211_start_radar_detection,
14948                 .flags = GENL_UNS_ADMIN_PERM,
14949                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14950                                   NL80211_FLAG_NEED_RTNL,
14951         },
14952         {
14953                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14954                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14955                 .doit = nl80211_get_protocol_features,
14956         },
14957         {
14958                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14959                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14960                 .doit = nl80211_update_ft_ies,
14961                 .flags = GENL_UNS_ADMIN_PERM,
14962                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14963                                   NL80211_FLAG_NEED_RTNL,
14964         },
14965         {
14966                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14967                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14968                 .doit = nl80211_crit_protocol_start,
14969                 .flags = GENL_UNS_ADMIN_PERM,
14970                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14971                                   NL80211_FLAG_NEED_RTNL,
14972         },
14973         {
14974                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14976                 .doit = nl80211_crit_protocol_stop,
14977                 .flags = GENL_UNS_ADMIN_PERM,
14978                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14979                                   NL80211_FLAG_NEED_RTNL,
14980         },
14981         {
14982                 .cmd = NL80211_CMD_GET_COALESCE,
14983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14984                 .doit = nl80211_get_coalesce,
14985                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14986                                   NL80211_FLAG_NEED_RTNL,
14987         },
14988         {
14989                 .cmd = NL80211_CMD_SET_COALESCE,
14990                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14991                 .doit = nl80211_set_coalesce,
14992                 .flags = GENL_UNS_ADMIN_PERM,
14993                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14994                                   NL80211_FLAG_NEED_RTNL,
14995         },
14996         {
14997                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14998                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14999                 .doit = nl80211_channel_switch,
15000                 .flags = GENL_UNS_ADMIN_PERM,
15001                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15002                                   NL80211_FLAG_NEED_RTNL,
15003         },
15004         {
15005                 .cmd = NL80211_CMD_VENDOR,
15006                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15007                 .doit = nl80211_vendor_cmd,
15008                 .dumpit = nl80211_vendor_cmd_dump,
15009                 .flags = GENL_UNS_ADMIN_PERM,
15010                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15011                                   NL80211_FLAG_NEED_RTNL |
15012                                   NL80211_FLAG_CLEAR_SKB,
15013         },
15014         {
15015                 .cmd = NL80211_CMD_SET_QOS_MAP,
15016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15017                 .doit = nl80211_set_qos_map,
15018                 .flags = GENL_UNS_ADMIN_PERM,
15019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15020                                   NL80211_FLAG_NEED_RTNL,
15021         },
15022         {
15023                 .cmd = NL80211_CMD_ADD_TX_TS,
15024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15025                 .doit = nl80211_add_tx_ts,
15026                 .flags = GENL_UNS_ADMIN_PERM,
15027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15028                                   NL80211_FLAG_NEED_RTNL,
15029         },
15030         {
15031                 .cmd = NL80211_CMD_DEL_TX_TS,
15032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15033                 .doit = nl80211_del_tx_ts,
15034                 .flags = GENL_UNS_ADMIN_PERM,
15035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15036                                   NL80211_FLAG_NEED_RTNL,
15037         },
15038         {
15039                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15041                 .doit = nl80211_tdls_channel_switch,
15042                 .flags = GENL_UNS_ADMIN_PERM,
15043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15044                                   NL80211_FLAG_NEED_RTNL,
15045         },
15046         {
15047                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15049                 .doit = nl80211_tdls_cancel_channel_switch,
15050                 .flags = GENL_UNS_ADMIN_PERM,
15051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15052                                   NL80211_FLAG_NEED_RTNL,
15053         },
15054         {
15055                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15057                 .doit = nl80211_set_multicast_to_unicast,
15058                 .flags = GENL_UNS_ADMIN_PERM,
15059                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15060                                   NL80211_FLAG_NEED_RTNL,
15061         },
15062         {
15063                 .cmd = NL80211_CMD_SET_PMK,
15064                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15065                 .doit = nl80211_set_pmk,
15066                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15067                                   NL80211_FLAG_NEED_RTNL |
15068                                   NL80211_FLAG_CLEAR_SKB,
15069         },
15070         {
15071                 .cmd = NL80211_CMD_DEL_PMK,
15072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15073                 .doit = nl80211_del_pmk,
15074                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15075                                   NL80211_FLAG_NEED_RTNL,
15076         },
15077         {
15078                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15079                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15080                 .doit = nl80211_external_auth,
15081                 .flags = GENL_ADMIN_PERM,
15082                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15083                                   NL80211_FLAG_NEED_RTNL,
15084         },
15085         {
15086                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15087                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15088                 .doit = nl80211_tx_control_port,
15089                 .flags = GENL_UNS_ADMIN_PERM,
15090                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15091                                   NL80211_FLAG_NEED_RTNL,
15092         },
15093         {
15094                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15095                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15096                 .doit = nl80211_get_ftm_responder_stats,
15097                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15098                                   NL80211_FLAG_NEED_RTNL,
15099         },
15100         {
15101                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15102                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15103                 .doit = nl80211_pmsr_start,
15104                 .flags = GENL_UNS_ADMIN_PERM,
15105                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15106                                   NL80211_FLAG_NEED_RTNL,
15107         },
15108         {
15109                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15110                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15111                 .doit = nl80211_notify_radar_detection,
15112                 .flags = GENL_UNS_ADMIN_PERM,
15113                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15114                                   NL80211_FLAG_NEED_RTNL,
15115         },
15116         {
15117                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15118                 .doit = nl80211_update_owe_info,
15119                 .flags = GENL_ADMIN_PERM,
15120                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15121                                   NL80211_FLAG_NEED_RTNL,
15122         },
15123         {
15124                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15125                 .doit = nl80211_probe_mesh_link,
15126                 .flags = GENL_UNS_ADMIN_PERM,
15127                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15128                                   NL80211_FLAG_NEED_RTNL,
15129         },
15130         {
15131                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15132                 .doit = nl80211_set_tid_config,
15133                 .flags = GENL_UNS_ADMIN_PERM,
15134                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15135                                   NL80211_FLAG_NEED_RTNL,
15136         },
15137 };
15138
15139 static struct genl_family nl80211_fam __ro_after_init = {
15140         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15141         .hdrsize = 0,                   /* no private header */
15142         .version = 1,                   /* no particular meaning now */
15143         .maxattr = NL80211_ATTR_MAX,
15144         .policy = nl80211_policy,
15145         .netnsok = true,
15146         .pre_doit = nl80211_pre_doit,
15147         .post_doit = nl80211_post_doit,
15148         .module = THIS_MODULE,
15149         .ops = nl80211_ops,
15150         .n_ops = ARRAY_SIZE(nl80211_ops),
15151         .mcgrps = nl80211_mcgrps,
15152         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15153         .parallel_ops = true,
15154 };
15155
15156 /* notification functions */
15157
15158 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15159                           enum nl80211_commands cmd)
15160 {
15161         struct sk_buff *msg;
15162         struct nl80211_dump_wiphy_state state = {};
15163
15164         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15165                 cmd != NL80211_CMD_DEL_WIPHY);
15166
15167         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15168         if (!msg)
15169                 return;
15170
15171         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15172                 nlmsg_free(msg);
15173                 return;
15174         }
15175
15176         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15177                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15178 }
15179
15180 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15181                                 struct wireless_dev *wdev,
15182                                 enum nl80211_commands cmd)
15183 {
15184         struct sk_buff *msg;
15185
15186         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15187         if (!msg)
15188                 return;
15189
15190         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15191                 nlmsg_free(msg);
15192                 return;
15193         }
15194
15195         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15196                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15197 }
15198
15199 static int nl80211_add_scan_req(struct sk_buff *msg,
15200                                 struct cfg80211_registered_device *rdev)
15201 {
15202         struct cfg80211_scan_request *req = rdev->scan_req;
15203         struct nlattr *nest;
15204         int i;
15205
15206         if (WARN_ON(!req))
15207                 return 0;
15208
15209         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15210         if (!nest)
15211                 goto nla_put_failure;
15212         for (i = 0; i < req->n_ssids; i++) {
15213                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15214                         goto nla_put_failure;
15215         }
15216         nla_nest_end(msg, nest);
15217
15218         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
15219         if (!nest)
15220                 goto nla_put_failure;
15221         for (i = 0; i < req->n_channels; i++) {
15222                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15223                         goto nla_put_failure;
15224         }
15225         nla_nest_end(msg, nest);
15226
15227         if (req->ie &&
15228             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15229                 goto nla_put_failure;
15230
15231         if (req->flags &&
15232             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15233                 goto nla_put_failure;
15234
15235         if (req->info.scan_start_tsf &&
15236             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15237                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15238              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15239                      req->info.tsf_bssid)))
15240                 goto nla_put_failure;
15241
15242         return 0;
15243  nla_put_failure:
15244         return -ENOBUFS;
15245 }
15246
15247 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15248                                  struct cfg80211_registered_device *rdev,
15249                                  struct wireless_dev *wdev,
15250                                  u32 portid, u32 seq, int flags,
15251                                  u32 cmd)
15252 {
15253         void *hdr;
15254
15255         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15256         if (!hdr)
15257                 return -1;
15258
15259         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15260             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15261                                          wdev->netdev->ifindex)) ||
15262             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15263                               NL80211_ATTR_PAD))
15264                 goto nla_put_failure;
15265
15266         /* ignore errors and send incomplete event anyway */
15267         nl80211_add_scan_req(msg, rdev);
15268
15269         genlmsg_end(msg, hdr);
15270         return 0;
15271
15272  nla_put_failure:
15273         genlmsg_cancel(msg, hdr);
15274         return -EMSGSIZE;
15275 }
15276
15277 static int
15278 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15279                             struct cfg80211_sched_scan_request *req, u32 cmd)
15280 {
15281         void *hdr;
15282
15283         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15284         if (!hdr)
15285                 return -1;
15286
15287         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15288                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15289             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15290             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15291                               NL80211_ATTR_PAD))
15292                 goto nla_put_failure;
15293
15294         genlmsg_end(msg, hdr);
15295         return 0;
15296
15297  nla_put_failure:
15298         genlmsg_cancel(msg, hdr);
15299         return -EMSGSIZE;
15300 }
15301
15302 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15303                              struct wireless_dev *wdev)
15304 {
15305         struct sk_buff *msg;
15306
15307         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15308         if (!msg)
15309                 return;
15310
15311         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15312                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15313                 nlmsg_free(msg);
15314                 return;
15315         }
15316
15317         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15318                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15319 }
15320
15321 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15322                                        struct wireless_dev *wdev, bool aborted)
15323 {
15324         struct sk_buff *msg;
15325
15326         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15327         if (!msg)
15328                 return NULL;
15329
15330         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15331                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15332                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15333                 nlmsg_free(msg);
15334                 return NULL;
15335         }
15336
15337         return msg;
15338 }
15339
15340 /* send message created by nl80211_build_scan_msg() */
15341 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15342                            struct sk_buff *msg)
15343 {
15344         if (!msg)
15345                 return;
15346
15347         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15348                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15349 }
15350
15351 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15352 {
15353         struct sk_buff *msg;
15354
15355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15356         if (!msg)
15357                 return;
15358
15359         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15360                 nlmsg_free(msg);
15361                 return;
15362         }
15363
15364         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15365                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15366 }
15367
15368 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15369                                           struct regulatory_request *request)
15370 {
15371         /* Userspace can always count this one always being set */
15372         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15373                 goto nla_put_failure;
15374
15375         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15376                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15377                                NL80211_REGDOM_TYPE_WORLD))
15378                         goto nla_put_failure;
15379         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15380                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15381                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15382                         goto nla_put_failure;
15383         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15384                    request->intersect) {
15385                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15386                                NL80211_REGDOM_TYPE_INTERSECTION))
15387                         goto nla_put_failure;
15388         } else {
15389                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15390                                NL80211_REGDOM_TYPE_COUNTRY) ||
15391                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15392                                    request->alpha2))
15393                         goto nla_put_failure;
15394         }
15395
15396         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15397                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15398
15399                 if (wiphy &&
15400                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15401                         goto nla_put_failure;
15402
15403                 if (wiphy &&
15404                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15405                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15406                         goto nla_put_failure;
15407         }
15408
15409         return true;
15410
15411 nla_put_failure:
15412         return false;
15413 }
15414
15415 /*
15416  * This can happen on global regulatory changes or device specific settings
15417  * based on custom regulatory domains.
15418  */
15419 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15420                                      struct regulatory_request *request)
15421 {
15422         struct sk_buff *msg;
15423         void *hdr;
15424
15425         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15426         if (!msg)
15427                 return;
15428
15429         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15430         if (!hdr)
15431                 goto nla_put_failure;
15432
15433         if (!nl80211_reg_change_event_fill(msg, request))
15434                 goto nla_put_failure;
15435
15436         genlmsg_end(msg, hdr);
15437
15438         rcu_read_lock();
15439         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15440                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15441         rcu_read_unlock();
15442
15443         return;
15444
15445 nla_put_failure:
15446         nlmsg_free(msg);
15447 }
15448
15449 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15450                                     struct net_device *netdev,
15451                                     const u8 *buf, size_t len,
15452                                     enum nl80211_commands cmd, gfp_t gfp,
15453                                     int uapsd_queues, const u8 *req_ies,
15454                                     size_t req_ies_len)
15455 {
15456         struct sk_buff *msg;
15457         void *hdr;
15458
15459         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15460         if (!msg)
15461                 return;
15462
15463         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15464         if (!hdr) {
15465                 nlmsg_free(msg);
15466                 return;
15467         }
15468
15469         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15470             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15471             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15472             (req_ies &&
15473              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15474                 goto nla_put_failure;
15475
15476         if (uapsd_queues >= 0) {
15477                 struct nlattr *nla_wmm =
15478                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15479                 if (!nla_wmm)
15480                         goto nla_put_failure;
15481
15482                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15483                                uapsd_queues))
15484                         goto nla_put_failure;
15485
15486                 nla_nest_end(msg, nla_wmm);
15487         }
15488
15489         genlmsg_end(msg, hdr);
15490
15491         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15492                                 NL80211_MCGRP_MLME, gfp);
15493         return;
15494
15495  nla_put_failure:
15496         nlmsg_free(msg);
15497 }
15498
15499 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15500                           struct net_device *netdev, const u8 *buf,
15501                           size_t len, gfp_t gfp)
15502 {
15503         nl80211_send_mlme_event(rdev, netdev, buf, len,
15504                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15505 }
15506
15507 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15508                            struct net_device *netdev, const u8 *buf,
15509                            size_t len, gfp_t gfp, int uapsd_queues,
15510                            const u8 *req_ies, size_t req_ies_len)
15511 {
15512         nl80211_send_mlme_event(rdev, netdev, buf, len,
15513                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15514                                 req_ies, req_ies_len);
15515 }
15516
15517 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15518                          struct net_device *netdev, const u8 *buf,
15519                          size_t len, gfp_t gfp)
15520 {
15521         nl80211_send_mlme_event(rdev, netdev, buf, len,
15522                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15523 }
15524
15525 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15526                            struct net_device *netdev, const u8 *buf,
15527                            size_t len, gfp_t gfp)
15528 {
15529         nl80211_send_mlme_event(rdev, netdev, buf, len,
15530                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15531 }
15532
15533 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15534                                   size_t len)
15535 {
15536         struct wireless_dev *wdev = dev->ieee80211_ptr;
15537         struct wiphy *wiphy = wdev->wiphy;
15538         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15539         const struct ieee80211_mgmt *mgmt = (void *)buf;
15540         u32 cmd;
15541
15542         if (WARN_ON(len < 2))
15543                 return;
15544
15545         if (ieee80211_is_deauth(mgmt->frame_control))
15546                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15547         else
15548                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15549
15550         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15551         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15552                                 NULL, 0);
15553 }
15554 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15555
15556 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15557                                       struct net_device *netdev, int cmd,
15558                                       const u8 *addr, gfp_t gfp)
15559 {
15560         struct sk_buff *msg;
15561         void *hdr;
15562
15563         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15564         if (!msg)
15565                 return;
15566
15567         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15568         if (!hdr) {
15569                 nlmsg_free(msg);
15570                 return;
15571         }
15572
15573         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15574             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15575             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15576             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15577                 goto nla_put_failure;
15578
15579         genlmsg_end(msg, hdr);
15580
15581         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15582                                 NL80211_MCGRP_MLME, gfp);
15583         return;
15584
15585  nla_put_failure:
15586         nlmsg_free(msg);
15587 }
15588
15589 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15590                                struct net_device *netdev, const u8 *addr,
15591                                gfp_t gfp)
15592 {
15593         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15594                                   addr, gfp);
15595 }
15596
15597 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15598                                 struct net_device *netdev, const u8 *addr,
15599                                 gfp_t gfp)
15600 {
15601         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15602                                   addr, gfp);
15603 }
15604
15605 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15606                                  struct net_device *netdev,
15607                                  struct cfg80211_connect_resp_params *cr,
15608                                  gfp_t gfp)
15609 {
15610         struct sk_buff *msg;
15611         void *hdr;
15612
15613         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15614                         cr->fils.kek_len + cr->fils.pmk_len +
15615                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15616         if (!msg)
15617                 return;
15618
15619         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15620         if (!hdr) {
15621                 nlmsg_free(msg);
15622                 return;
15623         }
15624
15625         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15626             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15627             (cr->bssid &&
15628              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15629             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15630                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15631                         cr->status) ||
15632             (cr->status < 0 &&
15633              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15634               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15635                           cr->timeout_reason))) ||
15636             (cr->req_ie &&
15637              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15638             (cr->resp_ie &&
15639              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15640                      cr->resp_ie)) ||
15641             (cr->fils.update_erp_next_seq_num &&
15642              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15643                          cr->fils.erp_next_seq_num)) ||
15644             (cr->status == WLAN_STATUS_SUCCESS &&
15645              ((cr->fils.kek &&
15646                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15647                        cr->fils.kek)) ||
15648               (cr->fils.pmk &&
15649                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15650               (cr->fils.pmkid &&
15651                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15652                 goto nla_put_failure;
15653
15654         genlmsg_end(msg, hdr);
15655
15656         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15657                                 NL80211_MCGRP_MLME, gfp);
15658         return;
15659
15660  nla_put_failure:
15661         nlmsg_free(msg);
15662 }
15663
15664 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15665                          struct net_device *netdev,
15666                          struct cfg80211_roam_info *info, gfp_t gfp)
15667 {
15668         struct sk_buff *msg;
15669         void *hdr;
15670         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15671
15672         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15673                         info->fils.kek_len + info->fils.pmk_len +
15674                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15675         if (!msg)
15676                 return;
15677
15678         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15679         if (!hdr) {
15680                 nlmsg_free(msg);
15681                 return;
15682         }
15683
15684         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15685             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15686             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15687             (info->req_ie &&
15688              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15689                      info->req_ie)) ||
15690             (info->resp_ie &&
15691              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15692                      info->resp_ie)) ||
15693             (info->fils.update_erp_next_seq_num &&
15694              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15695                          info->fils.erp_next_seq_num)) ||
15696             (info->fils.kek &&
15697              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15698                      info->fils.kek)) ||
15699             (info->fils.pmk &&
15700              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15701             (info->fils.pmkid &&
15702              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15703                 goto nla_put_failure;
15704
15705         genlmsg_end(msg, hdr);
15706
15707         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15708                                 NL80211_MCGRP_MLME, gfp);
15709         return;
15710
15711  nla_put_failure:
15712         nlmsg_free(msg);
15713 }
15714
15715 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15716                                   struct net_device *netdev, const u8 *bssid)
15717 {
15718         struct sk_buff *msg;
15719         void *hdr;
15720
15721         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15722         if (!msg)
15723                 return;
15724
15725         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15726         if (!hdr) {
15727                 nlmsg_free(msg);
15728                 return;
15729         }
15730
15731         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15732             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15733             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15734                 goto nla_put_failure;
15735
15736         genlmsg_end(msg, hdr);
15737
15738         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15739                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15740         return;
15741
15742  nla_put_failure:
15743         nlmsg_free(msg);
15744 }
15745
15746 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15747                                struct net_device *netdev, u16 reason,
15748                                const u8 *ie, size_t ie_len, bool from_ap)
15749 {
15750         struct sk_buff *msg;
15751         void *hdr;
15752
15753         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15754         if (!msg)
15755                 return;
15756
15757         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15758         if (!hdr) {
15759                 nlmsg_free(msg);
15760                 return;
15761         }
15762
15763         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15764             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15765             (reason &&
15766              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15767             (from_ap &&
15768              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15769             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15770                 goto nla_put_failure;
15771
15772         genlmsg_end(msg, hdr);
15773
15774         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15775                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15776         return;
15777
15778  nla_put_failure:
15779         nlmsg_free(msg);
15780 }
15781
15782 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15783                              struct net_device *netdev, const u8 *bssid,
15784                              gfp_t gfp)
15785 {
15786         struct sk_buff *msg;
15787         void *hdr;
15788
15789         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15790         if (!msg)
15791                 return;
15792
15793         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15794         if (!hdr) {
15795                 nlmsg_free(msg);
15796                 return;
15797         }
15798
15799         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15800             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15801             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15802                 goto nla_put_failure;
15803
15804         genlmsg_end(msg, hdr);
15805
15806         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15807                                 NL80211_MCGRP_MLME, gfp);
15808         return;
15809
15810  nla_put_failure:
15811         nlmsg_free(msg);
15812 }
15813
15814 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15815                                         const u8 *ie, u8 ie_len,
15816                                         int sig_dbm, gfp_t gfp)
15817 {
15818         struct wireless_dev *wdev = dev->ieee80211_ptr;
15819         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15820         struct sk_buff *msg;
15821         void *hdr;
15822
15823         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15824                 return;
15825
15826         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15827
15828         msg = nlmsg_new(100 + ie_len, gfp);
15829         if (!msg)
15830                 return;
15831
15832         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15833         if (!hdr) {
15834                 nlmsg_free(msg);
15835                 return;
15836         }
15837
15838         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15839             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15840             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15841             (ie_len && ie &&
15842              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15843             (sig_dbm &&
15844              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15845                 goto nla_put_failure;
15846
15847         genlmsg_end(msg, hdr);
15848
15849         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15850                                 NL80211_MCGRP_MLME, gfp);
15851         return;
15852
15853  nla_put_failure:
15854         nlmsg_free(msg);
15855 }
15856 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15857
15858 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15859                                  struct net_device *netdev, const u8 *addr,
15860                                  enum nl80211_key_type key_type, int key_id,
15861                                  const u8 *tsc, gfp_t gfp)
15862 {
15863         struct sk_buff *msg;
15864         void *hdr;
15865
15866         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15867         if (!msg)
15868                 return;
15869
15870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15871         if (!hdr) {
15872                 nlmsg_free(msg);
15873                 return;
15874         }
15875
15876         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15877             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15878             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15879             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15880             (key_id != -1 &&
15881              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15882             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15883                 goto nla_put_failure;
15884
15885         genlmsg_end(msg, hdr);
15886
15887         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15888                                 NL80211_MCGRP_MLME, gfp);
15889         return;
15890
15891  nla_put_failure:
15892         nlmsg_free(msg);
15893 }
15894
15895 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15896                                     struct ieee80211_channel *channel_before,
15897                                     struct ieee80211_channel *channel_after)
15898 {
15899         struct sk_buff *msg;
15900         void *hdr;
15901         struct nlattr *nl_freq;
15902
15903         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15904         if (!msg)
15905                 return;
15906
15907         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15908         if (!hdr) {
15909                 nlmsg_free(msg);
15910                 return;
15911         }
15912
15913         /*
15914          * Since we are applying the beacon hint to a wiphy we know its
15915          * wiphy_idx is valid
15916          */
15917         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15918                 goto nla_put_failure;
15919
15920         /* Before */
15921         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15922         if (!nl_freq)
15923                 goto nla_put_failure;
15924
15925         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15926                 goto nla_put_failure;
15927         nla_nest_end(msg, nl_freq);
15928
15929         /* After */
15930         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15931         if (!nl_freq)
15932                 goto nla_put_failure;
15933
15934         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15935                 goto nla_put_failure;
15936         nla_nest_end(msg, nl_freq);
15937
15938         genlmsg_end(msg, hdr);
15939
15940         rcu_read_lock();
15941         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15942                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15943         rcu_read_unlock();
15944
15945         return;
15946
15947 nla_put_failure:
15948         nlmsg_free(msg);
15949 }
15950
15951 static void nl80211_send_remain_on_chan_event(
15952         int cmd, struct cfg80211_registered_device *rdev,
15953         struct wireless_dev *wdev, u64 cookie,
15954         struct ieee80211_channel *chan,
15955         unsigned int duration, gfp_t gfp)
15956 {
15957         struct sk_buff *msg;
15958         void *hdr;
15959
15960         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15961         if (!msg)
15962                 return;
15963
15964         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15965         if (!hdr) {
15966                 nlmsg_free(msg);
15967                 return;
15968         }
15969
15970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15971             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15972                                          wdev->netdev->ifindex)) ||
15973             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15974                               NL80211_ATTR_PAD) ||
15975             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15976             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15977                         NL80211_CHAN_NO_HT) ||
15978             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15979                               NL80211_ATTR_PAD))
15980                 goto nla_put_failure;
15981
15982         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15983             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15984                 goto nla_put_failure;
15985
15986         genlmsg_end(msg, hdr);
15987
15988         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15989                                 NL80211_MCGRP_MLME, gfp);
15990         return;
15991
15992  nla_put_failure:
15993         nlmsg_free(msg);
15994 }
15995
15996 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15997                                struct ieee80211_channel *chan,
15998                                unsigned int duration, gfp_t gfp)
15999 {
16000         struct wiphy *wiphy = wdev->wiphy;
16001         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16002
16003         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16004         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16005                                           rdev, wdev, cookie, chan,
16006                                           duration, gfp);
16007 }
16008 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16009
16010 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16011                                         struct ieee80211_channel *chan,
16012                                         gfp_t gfp)
16013 {
16014         struct wiphy *wiphy = wdev->wiphy;
16015         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16016
16017         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16018         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16019                                           rdev, wdev, cookie, chan, 0, gfp);
16020 }
16021 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16022
16023 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16024                                         struct ieee80211_channel *chan,
16025                                         gfp_t gfp)
16026 {
16027         struct wiphy *wiphy = wdev->wiphy;
16028         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16029
16030         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16031         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16032                                           rdev, wdev, cookie, chan, 0, gfp);
16033 }
16034 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16035
16036 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16037                       struct station_info *sinfo, gfp_t gfp)
16038 {
16039         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16040         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16041         struct sk_buff *msg;
16042
16043         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16044
16045         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16046         if (!msg)
16047                 return;
16048
16049         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16050                                  rdev, dev, mac_addr, sinfo) < 0) {
16051                 nlmsg_free(msg);
16052                 return;
16053         }
16054
16055         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16056                                 NL80211_MCGRP_MLME, gfp);
16057 }
16058 EXPORT_SYMBOL(cfg80211_new_sta);
16059
16060 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16061                             struct station_info *sinfo, gfp_t gfp)
16062 {
16063         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16064         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16065         struct sk_buff *msg;
16066         struct station_info empty_sinfo = {};
16067
16068         if (!sinfo)
16069                 sinfo = &empty_sinfo;
16070
16071         trace_cfg80211_del_sta(dev, mac_addr);
16072
16073         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16074         if (!msg) {
16075                 cfg80211_sinfo_release_content(sinfo);
16076                 return;
16077         }
16078
16079         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16080                                  rdev, dev, mac_addr, sinfo) < 0) {
16081                 nlmsg_free(msg);
16082                 return;
16083         }
16084
16085         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16086                                 NL80211_MCGRP_MLME, gfp);
16087 }
16088 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16089
16090 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16091                           enum nl80211_connect_failed_reason reason,
16092                           gfp_t gfp)
16093 {
16094         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16095         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16096         struct sk_buff *msg;
16097         void *hdr;
16098
16099         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16100         if (!msg)
16101                 return;
16102
16103         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16104         if (!hdr) {
16105                 nlmsg_free(msg);
16106                 return;
16107         }
16108
16109         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16110             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16111             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16112                 goto nla_put_failure;
16113
16114         genlmsg_end(msg, hdr);
16115
16116         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16117                                 NL80211_MCGRP_MLME, gfp);
16118         return;
16119
16120  nla_put_failure:
16121         nlmsg_free(msg);
16122 }
16123 EXPORT_SYMBOL(cfg80211_conn_failed);
16124
16125 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16126                                        const u8 *addr, gfp_t gfp)
16127 {
16128         struct wireless_dev *wdev = dev->ieee80211_ptr;
16129         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16130         struct sk_buff *msg;
16131         void *hdr;
16132         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16133
16134         if (!nlportid)
16135                 return false;
16136
16137         msg = nlmsg_new(100, gfp);
16138         if (!msg)
16139                 return true;
16140
16141         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16142         if (!hdr) {
16143                 nlmsg_free(msg);
16144                 return true;
16145         }
16146
16147         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16148             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16149             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16150                 goto nla_put_failure;
16151
16152         genlmsg_end(msg, hdr);
16153         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16154         return true;
16155
16156  nla_put_failure:
16157         nlmsg_free(msg);
16158         return true;
16159 }
16160
16161 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16162                                 const u8 *addr, gfp_t gfp)
16163 {
16164         struct wireless_dev *wdev = dev->ieee80211_ptr;
16165         bool ret;
16166
16167         trace_cfg80211_rx_spurious_frame(dev, addr);
16168
16169         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16170                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16171                 trace_cfg80211_return_bool(false);
16172                 return false;
16173         }
16174         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16175                                          addr, gfp);
16176         trace_cfg80211_return_bool(ret);
16177         return ret;
16178 }
16179 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16180
16181 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16182                                         const u8 *addr, gfp_t gfp)
16183 {
16184         struct wireless_dev *wdev = dev->ieee80211_ptr;
16185         bool ret;
16186
16187         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16188
16189         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16190                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16191                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16192                 trace_cfg80211_return_bool(false);
16193                 return false;
16194         }
16195         ret = __nl80211_unexpected_frame(dev,
16196                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16197                                          addr, gfp);
16198         trace_cfg80211_return_bool(ret);
16199         return ret;
16200 }
16201 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16202
16203 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16204                       struct wireless_dev *wdev, u32 nlportid,
16205                       int freq, int sig_dbm,
16206                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16207 {
16208         struct net_device *netdev = wdev->netdev;
16209         struct sk_buff *msg;
16210         void *hdr;
16211
16212         msg = nlmsg_new(100 + len, gfp);
16213         if (!msg)
16214                 return -ENOMEM;
16215
16216         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16217         if (!hdr) {
16218                 nlmsg_free(msg);
16219                 return -ENOMEM;
16220         }
16221
16222         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16223             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16224                                         netdev->ifindex)) ||
16225             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16226                               NL80211_ATTR_PAD) ||
16227             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
16228             (sig_dbm &&
16229              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16230             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16231             (flags &&
16232              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16233                 goto nla_put_failure;
16234
16235         genlmsg_end(msg, hdr);
16236
16237         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16238
16239  nla_put_failure:
16240         nlmsg_free(msg);
16241         return -ENOBUFS;
16242 }
16243
16244 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16245                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16246 {
16247         struct wiphy *wiphy = wdev->wiphy;
16248         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16249         struct net_device *netdev = wdev->netdev;
16250         struct sk_buff *msg;
16251         void *hdr;
16252
16253         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16254
16255         msg = nlmsg_new(100 + len, gfp);
16256         if (!msg)
16257                 return;
16258
16259         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
16260         if (!hdr) {
16261                 nlmsg_free(msg);
16262                 return;
16263         }
16264
16265         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16266             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16267                                    netdev->ifindex)) ||
16268             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16269                               NL80211_ATTR_PAD) ||
16270             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16271             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16272                               NL80211_ATTR_PAD) ||
16273             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16274                 goto nla_put_failure;
16275
16276         genlmsg_end(msg, hdr);
16277
16278         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16279                                 NL80211_MCGRP_MLME, gfp);
16280         return;
16281
16282  nla_put_failure:
16283         nlmsg_free(msg);
16284 }
16285 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16286
16287 static int __nl80211_rx_control_port(struct net_device *dev,
16288                                      struct sk_buff *skb,
16289                                      bool unencrypted, gfp_t gfp)
16290 {
16291         struct wireless_dev *wdev = dev->ieee80211_ptr;
16292         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16293         struct ethhdr *ehdr = eth_hdr(skb);
16294         const u8 *addr = ehdr->h_source;
16295         u16 proto = be16_to_cpu(skb->protocol);
16296         struct sk_buff *msg;
16297         void *hdr;
16298         struct nlattr *frame;
16299
16300         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16301
16302         if (!nlportid)
16303                 return -ENOENT;
16304
16305         msg = nlmsg_new(100 + skb->len, gfp);
16306         if (!msg)
16307                 return -ENOMEM;
16308
16309         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16310         if (!hdr) {
16311                 nlmsg_free(msg);
16312                 return -ENOBUFS;
16313         }
16314
16315         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16316             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16317             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16318                               NL80211_ATTR_PAD) ||
16319             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16320             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16321             (unencrypted && nla_put_flag(msg,
16322                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16323                 goto nla_put_failure;
16324
16325         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16326         if (!frame)
16327                 goto nla_put_failure;
16328
16329         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16330         genlmsg_end(msg, hdr);
16331
16332         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16333
16334  nla_put_failure:
16335         nlmsg_free(msg);
16336         return -ENOBUFS;
16337 }
16338
16339 bool cfg80211_rx_control_port(struct net_device *dev,
16340                               struct sk_buff *skb, bool unencrypted)
16341 {
16342         int ret;
16343
16344         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16345         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16346         trace_cfg80211_return_bool(ret == 0);
16347         return ret == 0;
16348 }
16349 EXPORT_SYMBOL(cfg80211_rx_control_port);
16350
16351 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16352                                             const char *mac, gfp_t gfp)
16353 {
16354         struct wireless_dev *wdev = dev->ieee80211_ptr;
16355         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16356         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16357         void **cb;
16358
16359         if (!msg)
16360                 return NULL;
16361
16362         cb = (void **)msg->cb;
16363
16364         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16365         if (!cb[0]) {
16366                 nlmsg_free(msg);
16367                 return NULL;
16368         }
16369
16370         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16371             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16372                 goto nla_put_failure;
16373
16374         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16375                 goto nla_put_failure;
16376
16377         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16378         if (!cb[1])
16379                 goto nla_put_failure;
16380
16381         cb[2] = rdev;
16382
16383         return msg;
16384  nla_put_failure:
16385         nlmsg_free(msg);
16386         return NULL;
16387 }
16388
16389 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16390 {
16391         void **cb = (void **)msg->cb;
16392         struct cfg80211_registered_device *rdev = cb[2];
16393
16394         nla_nest_end(msg, cb[1]);
16395         genlmsg_end(msg, cb[0]);
16396
16397         memset(msg->cb, 0, sizeof(msg->cb));
16398
16399         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16400                                 NL80211_MCGRP_MLME, gfp);
16401 }
16402
16403 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16404                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16405                               s32 rssi_level, gfp_t gfp)
16406 {
16407         struct sk_buff *msg;
16408         struct wireless_dev *wdev = dev->ieee80211_ptr;
16409         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16410
16411         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16412
16413         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16414                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16415                 return;
16416
16417         if (wdev->cqm_config) {
16418                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16419
16420                 cfg80211_cqm_rssi_update(rdev, dev);
16421
16422                 if (rssi_level == 0)
16423                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16424         }
16425
16426         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16427         if (!msg)
16428                 return;
16429
16430         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16431                         rssi_event))
16432                 goto nla_put_failure;
16433
16434         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16435                                       rssi_level))
16436                 goto nla_put_failure;
16437
16438         cfg80211_send_cqm(msg, gfp);
16439
16440         return;
16441
16442  nla_put_failure:
16443         nlmsg_free(msg);
16444 }
16445 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16446
16447 void cfg80211_cqm_txe_notify(struct net_device *dev,
16448                              const u8 *peer, u32 num_packets,
16449                              u32 rate, u32 intvl, gfp_t gfp)
16450 {
16451         struct sk_buff *msg;
16452
16453         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16454         if (!msg)
16455                 return;
16456
16457         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16458                 goto nla_put_failure;
16459
16460         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16461                 goto nla_put_failure;
16462
16463         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16464                 goto nla_put_failure;
16465
16466         cfg80211_send_cqm(msg, gfp);
16467         return;
16468
16469  nla_put_failure:
16470         nlmsg_free(msg);
16471 }
16472 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16473
16474 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16475                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16476 {
16477         struct sk_buff *msg;
16478
16479         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16480
16481         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16482         if (!msg)
16483                 return;
16484
16485         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16486                 goto nla_put_failure;
16487
16488         cfg80211_send_cqm(msg, gfp);
16489         return;
16490
16491  nla_put_failure:
16492         nlmsg_free(msg);
16493 }
16494 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16495
16496 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16497 {
16498         struct sk_buff *msg;
16499
16500         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16501         if (!msg)
16502                 return;
16503
16504         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16505                 goto nla_put_failure;
16506
16507         cfg80211_send_cqm(msg, gfp);
16508         return;
16509
16510  nla_put_failure:
16511         nlmsg_free(msg);
16512 }
16513 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16514
16515 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16516                                      struct net_device *netdev, const u8 *bssid,
16517                                      const u8 *replay_ctr, gfp_t gfp)
16518 {
16519         struct sk_buff *msg;
16520         struct nlattr *rekey_attr;
16521         void *hdr;
16522
16523         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16524         if (!msg)
16525                 return;
16526
16527         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16528         if (!hdr) {
16529                 nlmsg_free(msg);
16530                 return;
16531         }
16532
16533         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16534             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16535             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16536                 goto nla_put_failure;
16537
16538         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16539         if (!rekey_attr)
16540                 goto nla_put_failure;
16541
16542         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16543                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16544                 goto nla_put_failure;
16545
16546         nla_nest_end(msg, rekey_attr);
16547
16548         genlmsg_end(msg, hdr);
16549
16550         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16551                                 NL80211_MCGRP_MLME, gfp);
16552         return;
16553
16554  nla_put_failure:
16555         nlmsg_free(msg);
16556 }
16557
16558 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16559                                const u8 *replay_ctr, gfp_t gfp)
16560 {
16561         struct wireless_dev *wdev = dev->ieee80211_ptr;
16562         struct wiphy *wiphy = wdev->wiphy;
16563         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16564
16565         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16566         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16567 }
16568 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16569
16570 static void
16571 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16572                                struct net_device *netdev, int index,
16573                                const u8 *bssid, bool preauth, gfp_t gfp)
16574 {
16575         struct sk_buff *msg;
16576         struct nlattr *attr;
16577         void *hdr;
16578
16579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16580         if (!msg)
16581                 return;
16582
16583         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16584         if (!hdr) {
16585                 nlmsg_free(msg);
16586                 return;
16587         }
16588
16589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16590             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16591                 goto nla_put_failure;
16592
16593         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16594         if (!attr)
16595                 goto nla_put_failure;
16596
16597         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16598             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16599             (preauth &&
16600              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16601                 goto nla_put_failure;
16602
16603         nla_nest_end(msg, attr);
16604
16605         genlmsg_end(msg, hdr);
16606
16607         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16608                                 NL80211_MCGRP_MLME, gfp);
16609         return;
16610
16611  nla_put_failure:
16612         nlmsg_free(msg);
16613 }
16614
16615 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16616                                      const u8 *bssid, bool preauth, gfp_t gfp)
16617 {
16618         struct wireless_dev *wdev = dev->ieee80211_ptr;
16619         struct wiphy *wiphy = wdev->wiphy;
16620         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16621
16622         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16623         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16624 }
16625 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16626
16627 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16628                                      struct net_device *netdev,
16629                                      struct cfg80211_chan_def *chandef,
16630                                      gfp_t gfp,
16631                                      enum nl80211_commands notif,
16632                                      u8 count)
16633 {
16634         struct sk_buff *msg;
16635         void *hdr;
16636
16637         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16638         if (!msg)
16639                 return;
16640
16641         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16642         if (!hdr) {
16643                 nlmsg_free(msg);
16644                 return;
16645         }
16646
16647         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16648                 goto nla_put_failure;
16649
16650         if (nl80211_send_chandef(msg, chandef))
16651                 goto nla_put_failure;
16652
16653         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16654             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16655                         goto nla_put_failure;
16656
16657         genlmsg_end(msg, hdr);
16658
16659         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16660                                 NL80211_MCGRP_MLME, gfp);
16661         return;
16662
16663  nla_put_failure:
16664         nlmsg_free(msg);
16665 }
16666
16667 void cfg80211_ch_switch_notify(struct net_device *dev,
16668                                struct cfg80211_chan_def *chandef)
16669 {
16670         struct wireless_dev *wdev = dev->ieee80211_ptr;
16671         struct wiphy *wiphy = wdev->wiphy;
16672         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16673
16674         ASSERT_WDEV_LOCK(wdev);
16675
16676         trace_cfg80211_ch_switch_notify(dev, chandef);
16677
16678         wdev->chandef = *chandef;
16679         wdev->preset_chandef = *chandef;
16680
16681         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16682             !WARN_ON(!wdev->current_bss))
16683                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16684
16685         cfg80211_sched_dfs_chan_update(rdev);
16686
16687         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16688                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16689 }
16690 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16691
16692 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16693                                        struct cfg80211_chan_def *chandef,
16694                                        u8 count)
16695 {
16696         struct wireless_dev *wdev = dev->ieee80211_ptr;
16697         struct wiphy *wiphy = wdev->wiphy;
16698         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16699
16700         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16701
16702         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16703                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16704 }
16705 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16706
16707 void
16708 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16709                      const struct cfg80211_chan_def *chandef,
16710                      enum nl80211_radar_event event,
16711                      struct net_device *netdev, gfp_t gfp)
16712 {
16713         struct sk_buff *msg;
16714         void *hdr;
16715
16716         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16717         if (!msg)
16718                 return;
16719
16720         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16721         if (!hdr) {
16722                 nlmsg_free(msg);
16723                 return;
16724         }
16725
16726         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16727                 goto nla_put_failure;
16728
16729         /* NOP and radar events don't need a netdev parameter */
16730         if (netdev) {
16731                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16732
16733                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16734                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16735                                       NL80211_ATTR_PAD))
16736                         goto nla_put_failure;
16737         }
16738
16739         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16740                 goto nla_put_failure;
16741
16742         if (nl80211_send_chandef(msg, chandef))
16743                 goto nla_put_failure;
16744
16745         genlmsg_end(msg, hdr);
16746
16747         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16748                                 NL80211_MCGRP_MLME, gfp);
16749         return;
16750
16751  nla_put_failure:
16752         nlmsg_free(msg);
16753 }
16754
16755 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16756                                        struct sta_opmode_info *sta_opmode,
16757                                        gfp_t gfp)
16758 {
16759         struct sk_buff *msg;
16760         struct wireless_dev *wdev = dev->ieee80211_ptr;
16761         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16762         void *hdr;
16763
16764         if (WARN_ON(!mac))
16765                 return;
16766
16767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16768         if (!msg)
16769                 return;
16770
16771         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16772         if (!hdr) {
16773                 nlmsg_free(msg);
16774                 return;
16775         }
16776
16777         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16778                 goto nla_put_failure;
16779
16780         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16781                 goto nla_put_failure;
16782
16783         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16784                 goto nla_put_failure;
16785
16786         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16787             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16788                 goto nla_put_failure;
16789
16790         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16791             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16792                 goto nla_put_failure;
16793
16794         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16795             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16796                 goto nla_put_failure;
16797
16798         genlmsg_end(msg, hdr);
16799
16800         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16801                                 NL80211_MCGRP_MLME, gfp);
16802
16803         return;
16804
16805 nla_put_failure:
16806         nlmsg_free(msg);
16807 }
16808 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16809
16810 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16811                            u64 cookie, bool acked, s32 ack_signal,
16812                            bool is_valid_ack_signal, gfp_t gfp)
16813 {
16814         struct wireless_dev *wdev = dev->ieee80211_ptr;
16815         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16816         struct sk_buff *msg;
16817         void *hdr;
16818
16819         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16820
16821         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16822
16823         if (!msg)
16824                 return;
16825
16826         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16827         if (!hdr) {
16828                 nlmsg_free(msg);
16829                 return;
16830         }
16831
16832         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16833             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16834             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16835             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16836                               NL80211_ATTR_PAD) ||
16837             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16838             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16839                                                 ack_signal)))
16840                 goto nla_put_failure;
16841
16842         genlmsg_end(msg, hdr);
16843
16844         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16845                                 NL80211_MCGRP_MLME, gfp);
16846         return;
16847
16848  nla_put_failure:
16849         nlmsg_free(msg);
16850 }
16851 EXPORT_SYMBOL(cfg80211_probe_status);
16852
16853 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16854                                  const u8 *frame, size_t len,
16855                                  int freq, int sig_dbm)
16856 {
16857         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16858         struct sk_buff *msg;
16859         void *hdr;
16860         struct cfg80211_beacon_registration *reg;
16861
16862         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16863
16864         spin_lock_bh(&rdev->beacon_registrations_lock);
16865         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16866                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16867                 if (!msg) {
16868                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16869                         return;
16870                 }
16871
16872                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16873                 if (!hdr)
16874                         goto nla_put_failure;
16875
16876                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16877                     (freq &&
16878                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16879                     (sig_dbm &&
16880                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16881                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16882                         goto nla_put_failure;
16883
16884                 genlmsg_end(msg, hdr);
16885
16886                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16887         }
16888         spin_unlock_bh(&rdev->beacon_registrations_lock);
16889         return;
16890
16891  nla_put_failure:
16892         spin_unlock_bh(&rdev->beacon_registrations_lock);
16893         nlmsg_free(msg);
16894 }
16895 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16896
16897 #ifdef CONFIG_PM
16898 static int cfg80211_net_detect_results(struct sk_buff *msg,
16899                                        struct cfg80211_wowlan_wakeup *wakeup)
16900 {
16901         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16902         struct nlattr *nl_results, *nl_match, *nl_freqs;
16903         int i, j;
16904
16905         nl_results = nla_nest_start_noflag(msg,
16906                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16907         if (!nl_results)
16908                 return -EMSGSIZE;
16909
16910         for (i = 0; i < nd->n_matches; i++) {
16911                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16912
16913                 nl_match = nla_nest_start_noflag(msg, i);
16914                 if (!nl_match)
16915                         break;
16916
16917                 /* The SSID attribute is optional in nl80211, but for
16918                  * simplicity reasons it's always present in the
16919                  * cfg80211 structure.  If a driver can't pass the
16920                  * SSID, that needs to be changed.  A zero length SSID
16921                  * is still a valid SSID (wildcard), so it cannot be
16922                  * used for this purpose.
16923                  */
16924                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16925                             match->ssid.ssid)) {
16926                         nla_nest_cancel(msg, nl_match);
16927                         goto out;
16928                 }
16929
16930                 if (match->n_channels) {
16931                         nl_freqs = nla_nest_start_noflag(msg,
16932                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16933                         if (!nl_freqs) {
16934                                 nla_nest_cancel(msg, nl_match);
16935                                 goto out;
16936                         }
16937
16938                         for (j = 0; j < match->n_channels; j++) {
16939                                 if (nla_put_u32(msg, j, match->channels[j])) {
16940                                         nla_nest_cancel(msg, nl_freqs);
16941                                         nla_nest_cancel(msg, nl_match);
16942                                         goto out;
16943                                 }
16944                         }
16945
16946                         nla_nest_end(msg, nl_freqs);
16947                 }
16948
16949                 nla_nest_end(msg, nl_match);
16950         }
16951
16952 out:
16953         nla_nest_end(msg, nl_results);
16954         return 0;
16955 }
16956
16957 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16958                                    struct cfg80211_wowlan_wakeup *wakeup,
16959                                    gfp_t gfp)
16960 {
16961         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16962         struct sk_buff *msg;
16963         void *hdr;
16964         int size = 200;
16965
16966         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16967
16968         if (wakeup)
16969                 size += wakeup->packet_present_len;
16970
16971         msg = nlmsg_new(size, gfp);
16972         if (!msg)
16973                 return;
16974
16975         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16976         if (!hdr)
16977                 goto free_msg;
16978
16979         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16980             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16981                               NL80211_ATTR_PAD))
16982                 goto free_msg;
16983
16984         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16985                                         wdev->netdev->ifindex))
16986                 goto free_msg;
16987
16988         if (wakeup) {
16989                 struct nlattr *reasons;
16990
16991                 reasons = nla_nest_start_noflag(msg,
16992                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16993                 if (!reasons)
16994                         goto free_msg;
16995
16996                 if (wakeup->disconnect &&
16997                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16998                         goto free_msg;
16999                 if (wakeup->magic_pkt &&
17000                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17001                         goto free_msg;
17002                 if (wakeup->gtk_rekey_failure &&
17003                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17004                         goto free_msg;
17005                 if (wakeup->eap_identity_req &&
17006                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17007                         goto free_msg;
17008                 if (wakeup->four_way_handshake &&
17009                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17010                         goto free_msg;
17011                 if (wakeup->rfkill_release &&
17012                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17013                         goto free_msg;
17014
17015                 if (wakeup->pattern_idx >= 0 &&
17016                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17017                                 wakeup->pattern_idx))
17018                         goto free_msg;
17019
17020                 if (wakeup->tcp_match &&
17021                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17022                         goto free_msg;
17023
17024                 if (wakeup->tcp_connlost &&
17025                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17026                         goto free_msg;
17027
17028                 if (wakeup->tcp_nomoretokens &&
17029                     nla_put_flag(msg,
17030                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17031                         goto free_msg;
17032
17033                 if (wakeup->packet) {
17034                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17035                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17036
17037                         if (!wakeup->packet_80211) {
17038                                 pkt_attr =
17039                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17040                                 len_attr =
17041                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17042                         }
17043
17044                         if (wakeup->packet_len &&
17045                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17046                                 goto free_msg;
17047
17048                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17049                                     wakeup->packet))
17050                                 goto free_msg;
17051                 }
17052
17053                 if (wakeup->net_detect &&
17054                     cfg80211_net_detect_results(msg, wakeup))
17055                                 goto free_msg;
17056
17057                 nla_nest_end(msg, reasons);
17058         }
17059
17060         genlmsg_end(msg, hdr);
17061
17062         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17063                                 NL80211_MCGRP_MLME, gfp);
17064         return;
17065
17066  free_msg:
17067         nlmsg_free(msg);
17068 }
17069 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17070 #endif
17071
17072 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17073                                 enum nl80211_tdls_operation oper,
17074                                 u16 reason_code, gfp_t gfp)
17075 {
17076         struct wireless_dev *wdev = dev->ieee80211_ptr;
17077         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17078         struct sk_buff *msg;
17079         void *hdr;
17080
17081         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17082                                          reason_code);
17083
17084         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17085         if (!msg)
17086                 return;
17087
17088         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17089         if (!hdr) {
17090                 nlmsg_free(msg);
17091                 return;
17092         }
17093
17094         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17095             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17096             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17097             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17098             (reason_code > 0 &&
17099              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17100                 goto nla_put_failure;
17101
17102         genlmsg_end(msg, hdr);
17103
17104         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17105                                 NL80211_MCGRP_MLME, gfp);
17106         return;
17107
17108  nla_put_failure:
17109         nlmsg_free(msg);
17110 }
17111 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17112
17113 static int nl80211_netlink_notify(struct notifier_block * nb,
17114                                   unsigned long state,
17115                                   void *_notify)
17116 {
17117         struct netlink_notify *notify = _notify;
17118         struct cfg80211_registered_device *rdev;
17119         struct wireless_dev *wdev;
17120         struct cfg80211_beacon_registration *reg, *tmp;
17121
17122         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17123                 return NOTIFY_DONE;
17124
17125         rcu_read_lock();
17126
17127         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17128                 struct cfg80211_sched_scan_request *sched_scan_req;
17129
17130                 list_for_each_entry_rcu(sched_scan_req,
17131                                         &rdev->sched_scan_req_list,
17132                                         list) {
17133                         if (sched_scan_req->owner_nlportid == notify->portid) {
17134                                 sched_scan_req->nl_owner_dead = true;
17135                                 schedule_work(&rdev->sched_scan_stop_wk);
17136                         }
17137                 }
17138
17139                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17140                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17141
17142                         if (wdev->owner_nlportid == notify->portid) {
17143                                 wdev->nl_owner_dead = true;
17144                                 schedule_work(&rdev->destroy_work);
17145                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17146                                 schedule_work(&wdev->disconnect_wk);
17147                         }
17148
17149                         cfg80211_release_pmsr(wdev, notify->portid);
17150                 }
17151
17152                 spin_lock_bh(&rdev->beacon_registrations_lock);
17153                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17154                                          list) {
17155                         if (reg->nlportid == notify->portid) {
17156                                 list_del(&reg->list);
17157                                 kfree(reg);
17158                                 break;
17159                         }
17160                 }
17161                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17162         }
17163
17164         rcu_read_unlock();
17165
17166         /*
17167          * It is possible that the user space process that is controlling the
17168          * indoor setting disappeared, so notify the regulatory core.
17169          */
17170         regulatory_netlink_notify(notify->portid);
17171         return NOTIFY_OK;
17172 }
17173
17174 static struct notifier_block nl80211_netlink_notifier = {
17175         .notifier_call = nl80211_netlink_notify,
17176 };
17177
17178 void cfg80211_ft_event(struct net_device *netdev,
17179                        struct cfg80211_ft_event_params *ft_event)
17180 {
17181         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17182         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17183         struct sk_buff *msg;
17184         void *hdr;
17185
17186         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17187
17188         if (!ft_event->target_ap)
17189                 return;
17190
17191         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17192                         GFP_KERNEL);
17193         if (!msg)
17194                 return;
17195
17196         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17197         if (!hdr)
17198                 goto out;
17199
17200         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17201             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17202             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17203                 goto out;
17204
17205         if (ft_event->ies &&
17206             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17207                 goto out;
17208         if (ft_event->ric_ies &&
17209             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17210                     ft_event->ric_ies))
17211                 goto out;
17212
17213         genlmsg_end(msg, hdr);
17214
17215         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17216                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17217         return;
17218  out:
17219         nlmsg_free(msg);
17220 }
17221 EXPORT_SYMBOL(cfg80211_ft_event);
17222
17223 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17224 {
17225         struct cfg80211_registered_device *rdev;
17226         struct sk_buff *msg;
17227         void *hdr;
17228         u32 nlportid;
17229
17230         rdev = wiphy_to_rdev(wdev->wiphy);
17231         if (!rdev->crit_proto_nlportid)
17232                 return;
17233
17234         nlportid = rdev->crit_proto_nlportid;
17235         rdev->crit_proto_nlportid = 0;
17236
17237         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17238         if (!msg)
17239                 return;
17240
17241         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17242         if (!hdr)
17243                 goto nla_put_failure;
17244
17245         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17246             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17247                               NL80211_ATTR_PAD))
17248                 goto nla_put_failure;
17249
17250         genlmsg_end(msg, hdr);
17251
17252         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17253         return;
17254
17255  nla_put_failure:
17256         nlmsg_free(msg);
17257 }
17258 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17259
17260 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17261 {
17262         struct wiphy *wiphy = wdev->wiphy;
17263         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17264         struct sk_buff *msg;
17265         void *hdr;
17266
17267         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17268         if (!msg)
17269                 return;
17270
17271         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17272         if (!hdr)
17273                 goto out;
17274
17275         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17276             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17277             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17278                               NL80211_ATTR_PAD))
17279                 goto out;
17280
17281         genlmsg_end(msg, hdr);
17282
17283         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17284                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17285         return;
17286  out:
17287         nlmsg_free(msg);
17288 }
17289
17290 int cfg80211_external_auth_request(struct net_device *dev,
17291                                    struct cfg80211_external_auth_params *params,
17292                                    gfp_t gfp)
17293 {
17294         struct wireless_dev *wdev = dev->ieee80211_ptr;
17295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17296         struct sk_buff *msg;
17297         void *hdr;
17298
17299         if (!wdev->conn_owner_nlportid)
17300                 return -EINVAL;
17301
17302         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17303         if (!msg)
17304                 return -ENOMEM;
17305
17306         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17307         if (!hdr)
17308                 goto nla_put_failure;
17309
17310         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17311             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17312             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17313             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17314                         params->action) ||
17315             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17316             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17317                     params->ssid.ssid))
17318                 goto nla_put_failure;
17319
17320         genlmsg_end(msg, hdr);
17321         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17322                         wdev->conn_owner_nlportid);
17323         return 0;
17324
17325  nla_put_failure:
17326         nlmsg_free(msg);
17327         return -ENOBUFS;
17328 }
17329 EXPORT_SYMBOL(cfg80211_external_auth_request);
17330
17331 void cfg80211_update_owe_info_event(struct net_device *netdev,
17332                                     struct cfg80211_update_owe_info *owe_info,
17333                                     gfp_t gfp)
17334 {
17335         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17336         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17337         struct sk_buff *msg;
17338         void *hdr;
17339
17340         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17341
17342         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17343         if (!msg)
17344                 return;
17345
17346         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17347         if (!hdr)
17348                 goto nla_put_failure;
17349
17350         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17351             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17352             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17353                 goto nla_put_failure;
17354
17355         if (!owe_info->ie_len ||
17356             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17357                 goto nla_put_failure;
17358
17359         genlmsg_end(msg, hdr);
17360
17361         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17362                                 NL80211_MCGRP_MLME, gfp);
17363         return;
17364
17365 nla_put_failure:
17366         genlmsg_cancel(msg, hdr);
17367         nlmsg_free(msg);
17368 }
17369 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17370
17371 /* initialisation/exit functions */
17372
17373 int __init nl80211_init(void)
17374 {
17375         int err;
17376
17377         err = genl_register_family(&nl80211_fam);
17378         if (err)
17379                 return err;
17380
17381         err = netlink_register_notifier(&nl80211_netlink_notifier);
17382         if (err)
17383                 goto err_out;
17384
17385         return 0;
17386  err_out:
17387         genl_unregister_family(&nl80211_fam);
17388         return err;
17389 }
17390
17391 void nl80211_exit(void)
17392 {
17393         netlink_unregister_notifier(&nl80211_netlink_notifier);
17394         genl_unregister_family(&nl80211_fam);
17395 }