package/mac80211/src/mac80211/ieee80211_sta.c

   1 /*
   2  * BSS client mode implementation
   3  * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
   4  * Copyright 2004, Instant802 Networks, Inc.
   5  * Copyright 2005, Devicescape Software, Inc.
   6  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   7  * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 /* TODO:
  15  * BSS table: use <BSSID,SSID> as the key to support multi-SSID APs
  16  * order BSS list by RSSI(?) ("quality of AP")
  17  * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
  18  *    SSID)
  19  */
  20 #include <linux/delay.h>
  21 #include <linux/if_ether.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/wireless.h>
  26 #include <linux/random.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/rtnetlink.h>
  29 #include <net/iw_handler.h>
  30 #include <asm/types.h>
  31
  32 #include <net/mac80211.h>
  33 #include "ieee80211_i.h"
  34 #include "ieee80211_rate.h"
  35 #include "hostapd_ioctl.h"
  36
  37 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
  38 #define IEEE80211_AUTH_MAX_TRIES 3
  39 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
  40 #define IEEE80211_ASSOC_MAX_TRIES 3
  41 #define IEEE80211_MONITORING_INTERVAL (2 * HZ)
  42 #define IEEE80211_PROBE_INTERVAL (60 * HZ)
  43 #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
  44 #define IEEE80211_SCAN_INTERVAL (2 * HZ)
  45 #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
  46 #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
  47
  48 #define IEEE80211_PROBE_DELAY (HZ / 33)
  49 #define IEEE80211_CHANNEL_TIME (HZ / 33)
  50 #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
  51 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
  52 #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
  53 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
  54
  55 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
  56
  57
  58 #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
  59
  60 #define ERP_INFO_USE_PROTECTION BIT(1)
  61
  62 /* mgmt header + 1 byte action code */
  63 #define IEEE80211_MIN_ACTION_SIZE (24 + 1)
  64
  65 static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
  66                                      u8 *ssid, size_t ssid_len);
  67 static struct ieee80211_sta_bss *
  68 ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid);
  69 static void ieee80211_rx_bss_put(struct net_device *dev,
  70                                  struct ieee80211_sta_bss *bss);
  71 static int ieee80211_sta_find_ibss(struct net_device *dev,
  72                                    struct ieee80211_if_sta *ifsta);
  73 static int ieee80211_sta_wep_configured(struct net_device *dev);
  74 static int ieee80211_sta_start_scan(struct net_device *dev,
  75                                     u8 *ssid, size_t ssid_len);
  76 static int ieee80211_sta_config_auth(struct net_device *dev,
  77                                      struct ieee80211_if_sta *ifsta);
  78
  79
  80 /* Parsed Information Elements */
  81 struct ieee802_11_elems {
  82         u8 *ssid;
  83         u8 ssid_len;
  84         u8 *supp_rates;
  85         u8 supp_rates_len;
  86         u8 *fh_params;
  87         u8 fh_params_len;
  88         u8 *ds_params;
  89         u8 ds_params_len;
  90         u8 *cf_params;
  91         u8 cf_params_len;
  92         u8 *tim;
  93         u8 tim_len;
  94         u8 *ibss_params;
  95         u8 ibss_params_len;
  96         u8 *challenge;
  97         u8 challenge_len;
  98         u8 *wpa;
  99         u8 wpa_len;
 100         u8 *rsn;
 101         u8 rsn_len;
 102         u8 *erp_info;
 103         u8 erp_info_len;
 104         u8 *ht_cap_param;
 105         u8 ht_cap_param_len;
 106         u8 *ht_extra_param;
 107         u8 ht_extra_param_len;
 108         u8 *ext_supp_rates;
 109         u8 ext_supp_rates_len;
 110         u8 *wmm_info;
 111         u8 wmm_info_len;
 112         u8 *wmm_param;
 113         u8 wmm_param_len;
 114         u8 *tspec;
 115         u8 tspec_len;
 116 };
 117
 118 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
 119
 120
 121 static ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
 122                                        struct ieee802_11_elems *elems)
 123 {
 124         size_t left = len;
 125         u8 *pos = start;
 126         int unknown = 0;
 127
 128         memset(elems, 0, sizeof(*elems));
 129
 130         while (left >= 2) {
 131                 u8 id, elen;
 132
 133                 id = *pos++;
 134                 elen = *pos++;
 135                 left -= 2;
 136
 137                 if (elen > left) {
 138 #if 0
 139                         if (net_ratelimit())
 140                                 printk(KERN_DEBUG "IEEE 802.11 element parse "
 141                                        "failed (id=%d elen=%d left=%d)\n",
 142                                        id, elen, left);
 143 #endif
 144                         return ParseFailed;
 145                 }
 146
 147                 switch (id) {
 148                 case WLAN_EID_SSID:
 149                         elems->ssid = pos;
 150                         elems->ssid_len = elen;
 151                         break;
 152                 case WLAN_EID_SUPP_RATES:
 153                         elems->supp_rates = pos;
 154                         elems->supp_rates_len = elen;
 155                         break;
 156                 case WLAN_EID_FH_PARAMS:
 157                         elems->fh_params = pos;
 158                         elems->fh_params_len = elen;
 159                         break;
 160                 case WLAN_EID_DS_PARAMS:
 161                         elems->ds_params = pos;
 162                         elems->ds_params_len = elen;
 163                         break;
 164                 case WLAN_EID_CF_PARAMS:
 165                         elems->cf_params = pos;
 166                         elems->cf_params_len = elen;
 167                         break;
 168                 case WLAN_EID_TIM:
 169                         elems->tim = pos;
 170                         elems->tim_len = elen;
 171                         break;
 172                 case WLAN_EID_IBSS_PARAMS:
 173                         elems->ibss_params = pos;
 174                         elems->ibss_params_len = elen;
 175                         break;
 176                 case WLAN_EID_CHALLENGE:
 177                         elems->challenge = pos;
 178                         elems->challenge_len = elen;
 179                         break;
 180                 case WLAN_EID_WPA:
 181                         if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
 182                             pos[2] == 0xf2) {
 183                                 /* Microsoft OUI (00:50:F2) */
 184                                 if (pos[3] == WIFI_OUI_TYPE_WPA) {
 185                                         /* OUI Type 1 - WPA IE */
 186                                         elems->wpa = pos;
 187                                         elems->wpa_len = elen;
 188                                 } else if (elen >= 5 &&
 189                                            pos[3] == WIFI_OUI_TYPE_WMM) {
 190                                         switch (pos[4]) {
 191                                         case WIFI_OUI_STYPE_WMM_INFO:
 192                                                 elems->wmm_info = pos;
 193                                                 elems->wmm_info_len = elen;
 194                                                 break;
 195                                         case WIFI_OUI_STYPE_WMM_PARAM:
 196                                                 elems->wmm_param = pos;
 197                                                 elems->wmm_param_len = elen;
 198                                                 break;
 199                                         case WIFI_OUI_STYPE_WMM_TSPEC:
 200                                                 if (elen != 61) {
 201                                                         printk(KERN_ERR "Wrong "
 202                                                                "TSPEC size.\n");
 203                                                         break;
 204                                                 }
 205                                                 elems->tspec = pos + 6;
 206                                                 elems->tspec_len = elen - 6;
 207                                                 break;
 208                                         default:
 209                                                 //printk(KERN_ERR "Unsupported "
 210                                                 //       "WiFi OUI %d\n", pos[4]);
 211                                                 break;
 212                                         }
 213                                 }
 214                         }
 215                         break;
 216                 case WLAN_EID_RSN:
 217                         elems->rsn = pos;
 218                         elems->rsn_len = elen;
 219                         break;
 220                 case WLAN_EID_ERP_INFO:
 221                         elems->erp_info = pos;
 222                         elems->erp_info_len = elen;
 223                         break;
 224                 case WLAN_EID_EXT_SUPP_RATES:
 225                         elems->ext_supp_rates = pos;
 226                         elems->ext_supp_rates_len = elen;
 227                         break;
 228                 case WLAN_EID_HT_CAPABILITY:
 229                         elems->ht_cap_param = pos;
 230                         elems->ht_cap_param_len = elen;
 231                         break;
 232                 case WLAN_EID_HT_EXTRA_INFO:
 233                         elems->ht_extra_param = pos;
 234                         elems->ht_extra_param_len = elen;
 235                         break;
 236                 case WLAN_EID_TSPEC:
 237                         if (elen != 55) {
 238                                 printk(KERN_ERR "Wrong TSPEC size.\n");
 239                                 break;
 240                         }
 241                         elems->tspec = pos;
 242                         elems->tspec_len = elen;
 243                         break;
 244                 default:
 245 #if 0
 246                         printk(KERN_DEBUG "IEEE 802.11 element parse ignored "
 247                                       "unknown element (id=%d elen=%d)\n",
 248                                       id, elen);
 249 #endif
 250                         unknown++;
 251                         break;
 252                 }
 253
 254                 left -= elen;
 255                 pos += elen;
 256         }
 257
 258         /* Do not trigger error if left == 1 as Apple Airport base stations
 259          * send AssocResps that are one spurious byte too long. */
 260
 261         return unknown ? ParseUnknown : ParseOK;
 262 }
 263
 264
 265
 266
 267 static int ecw2cw(int ecw)
 268 {
 269         int cw = 1;
 270         while (ecw > 0) {
 271                 cw <<= 1;
 272                 ecw--;
 273         }
 274         return cw - 1;
 275 }
 276
 277 static void ieee80211_sta_wmm_params(struct net_device *dev,
 278                                      struct ieee80211_if_sta *ifsta,
 279                                      u8 *wmm_param, size_t wmm_param_len)
 280 {
 281         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 282         struct ieee80211_tx_queue_params params;
 283         size_t left;
 284         int count;
 285         u8 *pos;
 286
 287         if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
 288                 return;
 289         count = wmm_param[6] & 0x0f;
 290         if (count == ifsta->wmm_last_param_set)
 291                 return;
 292         ifsta->wmm_last_param_set = count;
 293
 294         pos = wmm_param + 8;
 295         left = wmm_param_len - 8;
 296
 297         memset(&params, 0, sizeof(params));
 298
 299         if (!local->ops->conf_tx)
 300                 return;
 301
 302         local->wmm_acm = 0;
 303         for (; left >= 4; left -= 4, pos += 4) {
 304                 int aci = (pos[0] >> 5) & 0x03;
 305                 int acm = (pos[0] >> 4) & 0x01;
 306                 int queue;
 307
 308                 switch (aci) {
 309                 case 1:
 310                         queue = IEEE80211_TX_QUEUE_DATA3;
 311                         if (acm) {
 312                                 local->wmm_acm |= BIT(0) | BIT(3);
 313                         }
 314                         break;
 315                 case 2:
 316                         queue = IEEE80211_TX_QUEUE_DATA1;
 317                         if (acm) {
 318                                 local->wmm_acm |= BIT(4) | BIT(5);
 319                         }
 320                         break;
 321                 case 3:
 322                         queue = IEEE80211_TX_QUEUE_DATA0;
 323                         if (acm) {
 324                                 local->wmm_acm |= BIT(6) | BIT(7);
 325                         }
 326                         break;
 327                 case 0:
 328                 default:
 329                         queue = IEEE80211_TX_QUEUE_DATA2;
 330                         if (acm) {
 331                                 local->wmm_acm |= BIT(1) | BIT(2);
 332                         }
 333                         break;
 334                 }
 335
 336                 params.aifs = pos[0] & 0x0f;
 337                 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
 338                 params.cw_min = ecw2cw(pos[1] & 0x0f);
 339                 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
 340                 params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
 341                 printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
 342                        "cWmin=%d cWmax=%d burst=%d\n",
 343                        dev->name, queue, aci, acm, params.aifs, params.cw_min,
 344                        params.cw_max, params.burst_time);
 345                 /* TODO: handle ACM (block TX, fallback to next lowest allowed
 346                  * AC for now) */
 347                 if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
 348                         printk(KERN_DEBUG "%s: failed to set TX queue "
 349                                "parameters for queue %d\n", dev->name, queue);
 350                 }
 351         }
 352 }
 353
 354
 355 static void ieee80211_sta_send_associnfo(struct net_device *dev,
 356                                          struct ieee80211_if_sta *ifsta)
 357 {
 358         char *buf;
 359         size_t len;
 360         int i;
 361         union iwreq_data wrqu;
 362
 363         if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
 364                 return;
 365
 366         buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
 367                                 ifsta->assocresp_ies_len), GFP_ATOMIC);
 368         if (!buf)
 369                 return;
 370
 371         len = sprintf(buf, "ASSOCINFO(");
 372         if (ifsta->assocreq_ies) {
 373                 len += sprintf(buf + len, "ReqIEs=");
 374                 for (i = 0; i < ifsta->assocreq_ies_len; i++) {
 375                         len += sprintf(buf + len, "%02x",
 376                                        ifsta->assocreq_ies[i]);
 377                 }
 378         }
 379         if (ifsta->assocresp_ies) {
 380                 if (ifsta->assocreq_ies)
 381                         len += sprintf(buf + len, " ");
 382                 len += sprintf(buf + len, "RespIEs=");
 383                 for (i = 0; i < ifsta->assocresp_ies_len; i++) {
 384                         len += sprintf(buf + len, "%02x",
 385                                        ifsta->assocresp_ies[i]);
 386                 }
 387         }
 388         len += sprintf(buf + len, ")");
 389
 390         if (len > IW_CUSTOM_MAX) {
 391                 len = sprintf(buf, "ASSOCRESPIE=");
 392                 for (i = 0; i < ifsta->assocresp_ies_len; i++) {
 393                         len += sprintf(buf + len, "%02x",
 394                                        ifsta->assocresp_ies[i]);
 395                 }
 396         }
 397
 398         memset(&wrqu, 0, sizeof(wrqu));
 399         wrqu.data.length = len;
 400         wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 401
 402         kfree(buf);
 403 }
 404
 405
 406 static void ieee80211_set_associated(struct net_device *dev,
 407                                      struct ieee80211_if_sta *ifsta, int assoc)
 408 {
 409         union iwreq_data wrqu;
 410
 411         if (ifsta->associated == assoc)
 412                 return;
 413
 414         ifsta->associated = assoc;
 415
 416         if (assoc) {
 417                 struct ieee80211_sub_if_data *sdata;
 418                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 419                 if (sdata->type != IEEE80211_IF_TYPE_STA)
 420                         return;
 421                 netif_carrier_on(dev);
 422                 ifsta->prev_bssid_set = 1;
 423                 memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
 424                 memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
 425                 ieee80211_sta_send_associnfo(dev, ifsta);
 426         } else {
 427                 netif_carrier_off(dev);
 428                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
 429         }
 430         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
 431         wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
 432         ifsta->last_probe = jiffies;
 433 }
 434
 435 static void ieee80211_set_disassoc(struct net_device *dev,
 436                                    struct ieee80211_if_sta *ifsta, int deauth)
 437 {
 438         if (deauth)
 439                 ifsta->auth_tries = 0;
 440         ifsta->assoc_tries = 0;
 441         ieee80211_set_associated(dev, ifsta, 0);
 442 }
 443
 444 static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
 445                              int encrypt)
 446 {
 447         struct ieee80211_sub_if_data *sdata;
 448         struct ieee80211_tx_packet_data *pkt_data;
 449
 450         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 451         skb->dev = sdata->local->mdev;
 452         skb_set_mac_header(skb, 0);
 453         skb_set_network_header(skb, 0);
 454         skb_set_transport_header(skb, 0);
 455
 456         pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
 457         memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
 458         pkt_data->ifindex = sdata->dev->ifindex;
 459         pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
 460         pkt_data->do_not_encrypt = !encrypt;
 461
 462         dev_queue_xmit(skb);
 463 }
 464
 465
 466 static void ieee80211_send_auth(struct net_device *dev,
 467                                 struct ieee80211_if_sta *ifsta,
 468                                 int transaction, u8 *extra, size_t extra_len,
 469                                 int encrypt)
 470 {
 471         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 472         struct sk_buff *skb;
 473         struct ieee80211_mgmt *mgmt;
 474
 475         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
 476                             sizeof(*mgmt) + 6 + extra_len);
 477         if (!skb) {
 478                 printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
 479                        "frame\n", dev->name);
 480                 return;
 481         }
 482         skb_reserve(skb, local->hw.extra_tx_headroom);
 483
 484         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
 485         memset(mgmt, 0, 24 + 6);
 486         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 487                                            IEEE80211_STYPE_AUTH);
 488         if (encrypt)
 489                 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 490         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 491         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 492         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 493         mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
 494         mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
 495         ifsta->auth_transaction = transaction + 1;
 496         mgmt->u.auth.status_code = cpu_to_le16(0);
 497         if (extra)
 498                 memcpy(skb_put(skb, extra_len), extra, extra_len);
 499
 500         ieee80211_sta_tx(dev, skb, encrypt);
 501 }
 502
 503
 504 static void ieee80211_authenticate(struct net_device *dev,
 505                                    struct ieee80211_if_sta *ifsta)
 506 {
 507         ifsta->auth_tries++;
 508         if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
 509                 printk(KERN_DEBUG "%s: authentication with AP " MAC_FMT
 510                        " timed out\n",
 511                        dev->name, MAC_ARG(ifsta->bssid));
 512                 ifsta->state = IEEE80211_DISABLED;
 513                 return;
 514         }
 515
 516         ifsta->state = IEEE80211_AUTHENTICATE;
 517         printk(KERN_DEBUG "%s: authenticate with AP " MAC_FMT "\n",
 518                dev->name, MAC_ARG(ifsta->bssid));
 519
 520         ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
 521
 522         mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
 523 }
 524
 525
 526 static void ieee80211_send_assoc(struct net_device *dev,
 527                                  struct ieee80211_if_sta *ifsta)
 528 {
 529         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 530         struct ieee80211_hw_mode *mode;
 531         struct sk_buff *skb;
 532         struct ieee80211_mgmt *mgmt;
 533         u8 *pos, *ies;
 534         int i, len;
 535         u16 capab;
 536         struct ieee80211_sta_bss *bss;
 537         int wmm = 0;
 538         int ht_enabled = 0;
 539
 540         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
 541                             sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
 542                             ifsta->ssid_len);
 543         if (!skb) {
 544                 printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
 545                        "frame\n", dev->name);
 546                 return;
 547         }
 548         skb_reserve(skb, local->hw.extra_tx_headroom);
 549
 550         mode = local->oper_hw_mode;
 551         capab = ifsta->capab;
 552         if (mode->mode == MODE_IEEE80211G) {
 553                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
 554                         WLAN_CAPABILITY_SHORT_PREAMBLE;
 555         }
 556         bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
 557         if (bss) {
 558                 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
 559                         capab |= WLAN_CAPABILITY_PRIVACY;
 560                 if (bss->wmm_ie) {
 561                         wmm = 1;
 562
 563                         ht_enabled = 1;
 564                 }
 565                 ieee80211_rx_bss_put(dev, bss);
 566         }
 567
 568         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 569         memset(mgmt, 0, 24);
 570         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 571         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 572         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 573
 574         if (ifsta->prev_bssid_set) {
 575                 skb_put(skb, 10);
 576                 mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 577                                                    IEEE80211_STYPE_REASSOC_REQ);
 578                 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
 579                 mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
 580                 memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
 581                        ETH_ALEN);
 582         } else {
 583                 skb_put(skb, 4);
 584                 mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 585                                                    IEEE80211_STYPE_ASSOC_REQ);
 586                 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
 587                 mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
 588         }
 589
 590         /* SSID */
 591         ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
 592         *pos++ = WLAN_EID_SSID;
 593         *pos++ = ifsta->ssid_len;
 594         memcpy(pos, ifsta->ssid, ifsta->ssid_len);
 595
 596         len = mode->num_rates;
 597         if (len > 8)
 598                 len = 8;
 599         pos = skb_put(skb, len + 2);
 600         *pos++ = WLAN_EID_SUPP_RATES;
 601         *pos++ = len;
 602         for (i = 0; i < len; i++) {
 603                 int rate = mode->rates[i].rate;
 604                 if (mode->mode == MODE_ATHEROS_TURBO)
 605                         rate /= 2;
 606                 *pos++ = (u8) (rate / 5);
 607         }
 608
 609         if (mode->num_rates > len) {
 610                 pos = skb_put(skb, mode->num_rates - len + 2);
 611                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
 612                 *pos++ = mode->num_rates - len;
 613                 for (i = len; i < mode->num_rates; i++) {
 614                         int rate = mode->rates[i].rate;
 615                         if (mode->mode == MODE_ATHEROS_TURBO)
 616                                 rate /= 2;
 617                         *pos++ = (u8) (rate / 5);
 618                 }
 619         }
 620
 621         if (ifsta->extra_ie) {
 622                 pos = skb_put(skb, ifsta->extra_ie_len);
 623                 memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
 624         }
 625
 626         if (wmm && ifsta->wmm_enabled) {
 627                 pos = skb_put(skb, 9);
 628                 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
 629                 *pos++ = 7; /* len */
 630                 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
 631                 *pos++ = 0x50;
 632                 *pos++ = 0xf2;
 633                 *pos++ = 2; /* WME */
 634                 *pos++ = 0; /* WME info */
 635                 *pos++ = 1; /* WME ver */
 636                 *pos++ = 0;
 637         }
 638
 639         /* if low level driver supports 11n, fill in 11n IE */
 640         if (ht_enabled && ifsta->ht_enabled && local->ops->get_ht_capab) {
 641                 pos = skb_put(skb, sizeof(struct ieee80211_ht_capability)+2);
 642                 *pos++ = WLAN_EID_HT_CAPABILITY;
 643                 *pos++ = sizeof(struct ieee80211_ht_capability);
 644                 memset(pos, 0, sizeof(struct ieee80211_ht_capability));
 645                 local->ops->get_ht_capab(local_to_hw(local),
 646                         (struct ieee80211_ht_capability *)pos);
 647         }
 648
 649         kfree(ifsta->assocreq_ies);
 650         ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
 651         ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_ATOMIC);
 652         if (ifsta->assocreq_ies)
 653                 memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
 654
 655         ieee80211_sta_tx(dev, skb, 0);
 656 }
 657
 658
 659 static void ieee80211_send_deauth(struct net_device *dev,
 660                                   struct ieee80211_if_sta *ifsta, u16 reason)
 661 {
 662         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 663         struct sk_buff *skb;
 664         struct ieee80211_mgmt *mgmt;
 665
 666         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
 667         if (!skb) {
 668                 printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
 669                        "frame\n", dev->name);
 670                 return;
 671         }
 672         skb_reserve(skb, local->hw.extra_tx_headroom);
 673
 674         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 675         memset(mgmt, 0, 24);
 676         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 677         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 678         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 679         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 680                                            IEEE80211_STYPE_DEAUTH);
 681         skb_put(skb, 2);
 682         mgmt->u.deauth.reason_code = cpu_to_le16(reason);
 683
 684         ieee80211_sta_tx(dev, skb, 0);
 685 }
 686
 687
 688 static void ieee80211_send_disassoc(struct net_device *dev,
 689                                     struct ieee80211_if_sta *ifsta, u16 reason)
 690 {
 691         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 692         struct sk_buff *skb;
 693         struct ieee80211_mgmt *mgmt;
 694
 695         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
 696         if (!skb) {
 697                 printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
 698                        "frame\n", dev->name);
 699                 return;
 700         }
 701         skb_reserve(skb, local->hw.extra_tx_headroom);
 702
 703         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 704         memset(mgmt, 0, 24);
 705         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 706         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 707         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 708         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 709                                            IEEE80211_STYPE_DISASSOC);
 710         skb_put(skb, 2);
 711         mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
 712
 713         ieee80211_sta_tx(dev, skb, 0);
 714 }
 715
 716
 717 static int ieee80211_ts_index(u8 direction)
 718 {
 719         if (direction == WLAN_TSINFO_DOWNLINK ||
 720             direction == WLAN_TSINFO_DIRECTLINK)
 721                 return STA_TS_DOWNLINK;
 722         return STA_TS_UPLINK; /* UP and Bidirectional LINK */
 723 }
 724
 725
 726 void ieee80211_send_addts(struct net_device *dev,
 727                           struct ieee80211_if_sta *ifsta,
 728                           struct ieee80211_elem_tspec *tspec)
 729 {
 730         struct ieee80211_mgmt *mgmt;
 731         struct sk_buff *skb;
 732         static u8 token;
 733         struct ieee80211_elem_tspec *ptspec;
 734         u8 *pos;
 735
 736         skb = dev_alloc_skb(sizeof(*mgmt) + sizeof(*tspec));
 737         if (!skb) {
 738                 printk(KERN_DEBUG "%s: failed to allocate buffer for addts "
 739                        "frame\n", dev->name);
 740                 return;
 741         }
 742
 743         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 744         memset(mgmt, 0, 24);
 745         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 746         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 747         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 748         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 749                                            IEEE80211_STYPE_ACTION);
 750
 751         skb_put(skb, 1 + sizeof(mgmt->u.action.u.addts_req));
 752         mgmt->u.action.category = WLAN_CATEGORY_QOS;
 753         mgmt->u.action.u.addts_req.action_code = WLAN_ACTION_QOS_ADDTS_REQ;
 754         mgmt->u.action.u.addts_req.dialog_token = ++token % 127;
 755
 756         skb_put(skb, 2 + sizeof(*tspec));
 757         pos = mgmt->u.action.u.addts_req.variable;
 758         pos[0] = WLAN_EID_TSPEC;
 759         pos[1] = sizeof(*tspec);
 760         pos += 2;
 761         ptspec = (struct ieee80211_elem_tspec *)pos;
 762         memcpy(ptspec, tspec, sizeof(*tspec));
 763
 764         ieee80211_sta_tx(dev, skb, 0);
 765 }
 766
 767
 768 void wmm_send_addts(struct net_device *dev,
 769                     struct ieee80211_if_sta *ifsta,
 770                     struct ieee80211_elem_tspec *tspec)
 771 {
 772         struct ieee80211_mgmt *mgmt;
 773         struct sk_buff *skb;
 774         static u8 token;
 775         struct ieee80211_elem_tspec *ptspec;
 776         u8 *pos;
 777
 778         skb = dev_alloc_skb(sizeof(*mgmt) + 2 + 6 + sizeof(*tspec));
 779         if (!skb) {
 780                 printk(KERN_DEBUG "%s: failed to allocate buffer for addts "
 781                        "frame\n", dev->name);
 782                 return;
 783         }
 784
 785         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 786         memset(mgmt, 0, 24);
 787         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 788         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 789         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 790         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 791                                            IEEE80211_STYPE_ACTION);
 792
 793         skb_put(skb, 1 + sizeof(mgmt->u.action.u.wme_action));
 794         mgmt->u.action.category = WLAN_CATEGORY_WMM;
 795         mgmt->u.action.u.wme_action.action_code = WLAN_ACTION_QOS_ADDTS_REQ;
 796         mgmt->u.action.u.wme_action.dialog_token = ++token % 127;
 797         mgmt->u.action.u.wme_action.status_code = 0;
 798
 799         skb_put(skb, 2 + 6 + sizeof(*tspec));
 800         pos = mgmt->u.action.u.wme_action.variable;
 801         pos[0] = WLAN_EID_GENERIC;
 802         pos[1] = 61;
 803         pos += 2;
 804         pos[0] = 0x00; pos[1] = 0x50; pos[2] = 0xf2; /* Wi-Fi OUI (00:50:F2)*/
 805         pos += 3;
 806         pos[0] = WIFI_OUI_TYPE_WMM;
 807         pos[1] = WIFI_OUI_STYPE_WMM_TSPEC;
 808         pos[2] = 1; /* Version */
 809         pos += 3;
 810         ptspec = (struct ieee80211_elem_tspec *)pos;
 811         memcpy(ptspec, tspec, sizeof(*tspec));
 812
 813         ieee80211_sta_tx(dev, skb, 0);
 814 }
 815
 816
 817 void ieee80211_send_delts(struct net_device *dev,
 818                           struct ieee80211_if_sta *ifsta,
 819                           struct ieee80211_elem_tspec *tp)
 820 {
 821         struct ieee80211_mgmt *mgmt;
 822         struct sk_buff *skb;
 823         u8 tsid = IEEE80211_TSINFO_TSID(tp->ts_info);
 824         u8 direction = IEEE80211_TSINFO_DIR(tp->ts_info);
 825         u16 medium_time = le16_to_cpu(tp->medium_time);
 826         u8 index = ieee80211_ts_index(direction);
 827
 828         if (ifsta->ts_data[tsid][index].status == TS_STATUS_UNUSED) {
 829                 printk(KERN_DEBUG "%s: Trying to delete an ACM disabled TS "
 830                        "(%u:%u)\n", dev->name, tsid, direction);
 831                 return;
 832         }
 833         skb = dev_alloc_skb(sizeof(*mgmt));
 834         if (!skb) {
 835                 printk(KERN_DEBUG "%s: failed to allocate buffer for delts "
 836                        "frame\n", dev->name);
 837                 return;
 838         }
 839
 840         /* recompute admitted time */
 841         ifsta->ts_data[tsid][index].admitted_time_usec -=
 842                 ifsta->dot11EDCAAveragingPeriod * medium_time * 32;
 843         if ((s32)(ifsta->ts_data[tsid][index].admitted_time_usec) < 0)
 844                 ifsta->ts_data[tsid][index].admitted_time_usec = 0;
 845
 846         ifsta->ts_data[tsid][index].status = TS_STATUS_INACTIVE;
 847
 848         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 849         memset(mgmt, 0, 24);
 850         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 851         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 852         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 853         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 854                                            IEEE80211_STYPE_ACTION);
 855         skb_put(skb, 1 + sizeof(mgmt->u.action.u.delts));
 856         mgmt->u.action.category = WLAN_CATEGORY_QOS;
 857         mgmt->u.action.u.delts.action_code = WLAN_ACTION_QOS_DELTS;
 858         mgmt->u.action.u.delts.reason_code = 0;
 859         memset(&mgmt->u.action.u.delts.ts_info, 0,
 860                         sizeof(struct ieee80211_ts_info));
 861
 862         IEEE80211_SET_TSINFO_TSID(tp->ts_info, tsid);
 863         IEEE80211_SET_TSINFO_DIR(tp->ts_info, direction);
 864         IEEE80211_SET_TSINFO_POLICY(tp->ts_info, WLAN_TSINFO_EDCA);
 865         IEEE80211_SET_TSINFO_APSD(tp->ts_info, WLAN_TSINFO_PSB_LEGACY);
 866         IEEE80211_SET_TSINFO_UP(tp->ts_info, ifsta->ts_data[tsid][index].up);
 867
 868         ieee80211_sta_tx(dev, skb, 0);
 869 }
 870
 871
 872 void wmm_send_delts(struct net_device *dev,
 873                     struct ieee80211_if_sta *ifsta,
 874                     struct ieee80211_elem_tspec *tp)
 875 {
 876         struct ieee80211_mgmt *mgmt;
 877         struct ieee80211_elem_tspec *tspec;
 878         struct sk_buff *skb;
 879         u8 tsid = IEEE80211_TSINFO_TSID(tp->ts_info);
 880         u8 direction = IEEE80211_TSINFO_DIR(tp->ts_info);
 881         u16 medium_time = le16_to_cpu(tp->medium_time);
 882         u8 index = ieee80211_ts_index(direction);
 883         u8 *pos;
 884
 885         if (ifsta->ts_data[tsid][index].status == TS_STATUS_UNUSED) {
 886                 printk(KERN_DEBUG "%s: Tring to delete a non-Actived TS "
 887                        "(%u %u)\n", dev->name, tsid, direction);
 888                 return;
 889         }
 890         skb = dev_alloc_skb(sizeof(*mgmt) + 2 + 6 + sizeof(*tspec));
 891         if (!skb) {
 892                 printk(KERN_DEBUG "%s: failed to allocate buffer for delts "
 893                        "frame\n", dev->name);
 894                 return;
 895         }
 896
 897         /* recompute admitted time */
 898         ifsta->ts_data[tsid][index].admitted_time_usec -=
 899                 ifsta->dot11EDCAAveragingPeriod * medium_time * 32;
 900         if ((s32)(ifsta->ts_data[tsid][index].admitted_time_usec < 0))
 901                 ifsta->ts_data[tsid][index].admitted_time_usec = 0;
 902
 903         ifsta->ts_data[tsid][index].status = TS_STATUS_INACTIVE;
 904
 905         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 906         memset(mgmt, 0, 24);
 907         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 908         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 909         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 910         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 911                                            IEEE80211_STYPE_ACTION);
 912
 913         skb_put(skb, 1 + sizeof(mgmt->u.action.u.wme_action));
 914         mgmt->u.action.category = WLAN_CATEGORY_WMM;
 915         mgmt->u.action.u.wme_action.action_code = WLAN_ACTION_QOS_DELTS;
 916         mgmt->u.action.u.wme_action.dialog_token = 0;
 917         mgmt->u.action.u.wme_action.status_code = 0;
 918
 919         skb_put(skb, 2 + 6 + sizeof(*tspec));
 920         pos = mgmt->u.action.u.wme_action.variable;
 921         pos[0] = WLAN_EID_GENERIC;
 922         pos[1] = 61;
 923         pos += 2;
 924         pos[0] = 0x00; pos[1] = 0x50; pos[2] = 0xf2; /* Wi-Fi OUI (00:50:F2)*/
 925         pos += 3;
 926         pos[0] = WIFI_OUI_TYPE_WMM;
 927         pos[1] = WIFI_OUI_STYPE_WMM_TSPEC;
 928         pos[2] = 1; /* Version */
 929         pos += 3;
 930         tspec = (struct ieee80211_elem_tspec *)pos;
 931         memset(tspec, 0, sizeof(*tspec));
 932
 933         IEEE80211_SET_TSINFO_TSID(tspec->ts_info, tsid);
 934         IEEE80211_SET_TSINFO_DIR(tspec->ts_info, direction);
 935         IEEE80211_SET_TSINFO_POLICY(tspec->ts_info, WLAN_TSINFO_EDCA);
 936         IEEE80211_SET_TSINFO_APSD(tspec->ts_info, WLAN_TSINFO_PSB_LEGACY);
 937         IEEE80211_SET_TSINFO_UP(tspec->ts_info, ifsta->ts_data[tsid][index].up);
 938
 939         ieee80211_sta_tx(dev, skb, 0);
 940 }
 941
 942
 943 void ieee80211_send_dls_req(struct net_device *dev,
 944                             struct ieee80211_if_sta *ifsta,
 945                             u8 *addr, u16 timeout)
 946 {
 947         struct ieee80211_hw_mode *mode;
 948         struct sk_buff *skb;
 949         struct ieee80211_mgmt *mgmt;
 950         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 951         u8 *pos, *supp_rates, *esupp_rates = NULL;
 952         int i;
 953
 954         skb = dev_alloc_skb(sizeof(*mgmt) + 200 /* rates + ext_rates Size */);
 955         if (!skb) {
 956                 printk(KERN_DEBUG "%s: failed to allocate buffer for DLS REQ "
 957                        "frame\n", dev->name);
 958                 return;
 959         }
 960
 961         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
 962         memset(mgmt, 0, 24);
 963         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
 964         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
 965         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
 966         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
 967                                            IEEE80211_STYPE_ACTION);
 968
 969         skb_put(skb, 1 + sizeof(mgmt->u.action.u.dls_req));
 970         mgmt->u.action.category = WLAN_CATEGORY_DLS;
 971         mgmt->u.action.u.dls_req.action_code = WLAN_ACTION_DLS_REQ;
 972         memcpy(mgmt->u.action.u.dls_req.dest, addr, ETH_ALEN);
 973         memcpy(mgmt->u.action.u.dls_req.src, dev->dev_addr, ETH_ALEN);
 974         mgmt->u.action.u.dls_req.capab_info = cpu_to_le16(ifsta->ap_capab);
 975         mgmt->u.action.u.dls_req.timeout = cpu_to_le16(timeout);
 976
 977         /* Add supported rates and extended supported rates */
 978         supp_rates = skb_put(skb, 2);
 979         supp_rates[0] = WLAN_EID_SUPP_RATES;
 980         supp_rates[1] = 0;
 981         mode = local->oper_hw_mode;
 982         for (i = 0; i < mode->num_rates; i++) {
 983                 struct ieee80211_rate *rate = &mode->rates[i];
 984                 if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
 985                         continue;
 986                 if (esupp_rates) {
 987                         pos = skb_put(skb, 1);
 988                         esupp_rates[1]++;
 989                 } else if (supp_rates[1] == 8) {
 990                         esupp_rates = skb_put(skb, 3);
 991                         esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
 992                         esupp_rates[1] = 1;
 993                         pos = &esupp_rates[2];
 994                 } else {
 995                         pos = skb_put(skb, 1);
 996                         supp_rates[1]++;
 997                 }
 998                 if (local->hw.conf.phymode == MODE_ATHEROS_TURBO)
 999                         *pos = rate->rate / 10;
1000                 else
1001                         *pos = rate->rate / 5;
1002         }
1003
1004         ieee80211_sta_tx(dev, skb, 0);
1005 }
1006
1007
1008 static void ieee80211_send_dls_resp(struct net_device *dev,
1009                                     struct ieee80211_if_sta *ifsta,
1010                                     u8 *mac_addr, u16 status)
1011 {
1012         struct ieee80211_hw_mode *mode;
1013         struct sk_buff *skb;
1014         struct ieee80211_mgmt *mgmt;
1015         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1016         u8 *pos, *supp_rates, *esupp_rates = NULL;
1017         int i;
1018
1019         skb = dev_alloc_skb(sizeof(*mgmt) + 200 /* rates + ext_rates Size */);
1020         if (!skb) {
1021                 printk(KERN_DEBUG "%s: failed to allocate buffer for dls resp "
1022                        "frame\n", dev->name);
1023                 return;
1024         }
1025
1026         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1027         memset(mgmt, 0, 24);
1028         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
1029         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
1030         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
1031         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
1032                                            IEEE80211_STYPE_ACTION);
1033
1034         skb_put(skb, 1 + sizeof(mgmt->u.action.u.dls_resp));
1035         mgmt->u.action.category = WLAN_CATEGORY_DLS;
1036         mgmt->u.action.u.dls_resp.action_code = WLAN_ACTION_DLS_RESP;
1037         memcpy(mgmt->u.action.u.dls_resp.dest, dev->dev_addr, ETH_ALEN);
1038         memcpy(mgmt->u.action.u.dls_resp.src, mac_addr, ETH_ALEN);
1039         mgmt->u.action.u.dls_resp.status_code = cpu_to_le16(status);
1040
1041         if (!mgmt->u.action.u.dls_resp.status_code) {
1042                 ieee80211_sta_tx(dev, skb, 0);
1043                 return;
1044         }
1045
1046         /* Add capability information */
1047         pos = skb_put(skb, 2);
1048         *(__le16 *)pos = cpu_to_le16(ifsta->ap_capab);
1049
1050         /* Add supported rates and extended supported rates */
1051         supp_rates = skb_put(skb, 2);
1052         supp_rates[0] = WLAN_EID_SUPP_RATES;
1053         supp_rates[1] = 0;
1054         mode = local->oper_hw_mode;
1055         for (i = 0; i < mode->num_rates; i++) {
1056                 struct ieee80211_rate *rate = &mode->rates[i];
1057                 if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
1058                         continue;
1059                 if (esupp_rates) {
1060                         pos = skb_put(skb, 1);
1061                         esupp_rates[1]++;
1062                 } else if (supp_rates[1] == 8) {
1063                         esupp_rates = skb_put(skb, 3);
1064                         esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
1065                         esupp_rates[1] = 1;
1066                         pos = &esupp_rates[2];
1067                 } else {
1068                         pos = skb_put(skb, 1);
1069                         supp_rates[1]++;
1070                 }
1071                 if (local->hw.conf.phymode == MODE_ATHEROS_TURBO)
1072                         *pos = rate->rate / 10;
1073                 else
1074                         *pos = rate->rate / 5;
1075         }
1076
1077         ieee80211_sta_tx(dev, skb, 0);
1078 }
1079
1080
1081 void ieee80211_send_dls_teardown(struct net_device *dev,
1082                                  struct ieee80211_if_sta *ifsta,
1083                                  u8 *mac_addr, u16 reason)
1084 {
1085         struct ieee80211_mgmt *mgmt;
1086         struct sk_buff *skb;
1087
1088         skb = dev_alloc_skb(sizeof(*mgmt));
1089         if (!skb) {
1090                 printk(KERN_DEBUG "%s: failed to allocate buffer for DLS "
1091                        "Teardown frame\n", dev->name);
1092                 return;
1093         }
1094
1095         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1096         memset(mgmt, 0, 24);
1097         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
1098         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
1099         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
1100         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
1101                                            IEEE80211_STYPE_ACTION);
1102         skb_put(skb, 1 + sizeof(mgmt->u.action.u.dls_teardown));
1103         mgmt->u.action.category = WLAN_CATEGORY_DLS;
1104         mgmt->u.action.u.dls_teardown.action_code = WLAN_ACTION_DLS_TEARDOWN;
1105         memcpy(mgmt->u.action.u.dls_teardown.dest, mac_addr, ETH_ALEN);
1106         memcpy(mgmt->u.action.u.dls_teardown.src, dev->dev_addr, ETH_ALEN);
1107         mgmt->u.action.u.dls_teardown.reason_code = cpu_to_le16(reason);
1108
1109         ieee80211_sta_tx(dev, skb, 0);
1110 }
1111
1112
1113 static int ieee80211_privacy_mismatch(struct net_device *dev,
1114                                       struct ieee80211_if_sta *ifsta)
1115 {
1116         struct ieee80211_sta_bss *bss;
1117         int res = 0;
1118
1119         if (!ifsta || ifsta->mixed_cell ||
1120             ifsta->key_mgmt != IEEE80211_KEY_MGMT_NONE)
1121                 return 0;
1122
1123         bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
1124         if (!bss)
1125                 return 0;
1126
1127         if (ieee80211_sta_wep_configured(dev) !=
1128             !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
1129                 res = 1;
1130
1131         ieee80211_rx_bss_put(dev, bss);
1132
1133         return res;
1134 }
1135
1136
1137 static void ieee80211_associate(struct net_device *dev,
1138                                 struct ieee80211_if_sta *ifsta)
1139 {
1140         ifsta->assoc_tries++;
1141         if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
1142                 printk(KERN_DEBUG "%s: association with AP " MAC_FMT
1143                        " timed out\n",
1144                        dev->name, MAC_ARG(ifsta->bssid));
1145                 ifsta->state = IEEE80211_DISABLED;
1146                 return;
1147         }
1148
1149         ifsta->state = IEEE80211_ASSOCIATE;
1150         printk(KERN_DEBUG "%s: associate with AP " MAC_FMT "\n",
1151                dev->name, MAC_ARG(ifsta->bssid));
1152         if (ieee80211_privacy_mismatch(dev, ifsta)) {
1153                 printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
1154                        "mixed-cell disabled - abort association\n", dev->name);
1155                 ifsta->state = IEEE80211_DISABLED;
1156                 return;
1157         }
1158
1159         ieee80211_send_assoc(dev, ifsta);
1160
1161         mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
1162 }
1163
1164
1165 static void ieee80211_associated(struct net_device *dev,
1166                                  struct ieee80211_if_sta *ifsta)
1167 {
1168         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1169         struct sta_info *sta;
1170         int disassoc;
1171
1172         /* TODO: start monitoring current AP signal quality and number of
1173          * missed beacons. Scan other channels every now and then and search
1174          * for better APs. */
1175         /* TODO: remove expired BSSes */
1176
1177         ifsta->state = IEEE80211_ASSOCIATED;
1178
1179         sta = sta_info_get(local, ifsta->bssid);
1180         if (!sta) {
1181                 printk(KERN_DEBUG "%s: No STA entry for own AP " MAC_FMT "\n",
1182                        dev->name, MAC_ARG(ifsta->bssid));
1183                 disassoc = 1;
1184         } else {
1185                 disassoc = 0;
1186                 if (time_after(jiffies,
1187                                sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
1188                         if (ifsta->probereq_poll) {
1189                                 printk(KERN_DEBUG "%s: No ProbeResp from "
1190                                        "current AP " MAC_FMT " - assume out of "
1191                                        "range\n",
1192                                        dev->name, MAC_ARG(ifsta->bssid));
1193                                 disassoc = 1;
1194                                 sta_info_free(sta, 0);
1195                                 ifsta->probereq_poll = 0;
1196                         } else {
1197                                 ieee80211_send_probe_req(dev, ifsta->bssid,
1198                                                          local->scan_ssid,
1199                                                          local->scan_ssid_len);
1200                                 ifsta->probereq_poll = 1;
1201                         }
1202                 } else {
1203                         ifsta->probereq_poll = 0;
1204                         if (time_after(jiffies, ifsta->last_probe +
1205                                        IEEE80211_PROBE_INTERVAL)) {
1206                                 ifsta->last_probe = jiffies;
1207                                 ieee80211_send_probe_req(dev, ifsta->bssid,
1208                                                          ifsta->ssid,
1209                                                          ifsta->ssid_len);
1210                         }
1211                 }
1212                 sta_info_put(sta);
1213         }
1214         if (disassoc) {
1215                 union iwreq_data wrqu;
1216                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1217                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1218                 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1219                 mod_timer(&ifsta->timer, jiffies +
1220                                       IEEE80211_MONITORING_INTERVAL + 30 * HZ);
1221         } else {
1222                 mod_timer(&ifsta->timer, jiffies +
1223                                       IEEE80211_MONITORING_INTERVAL);
1224         }
1225 }
1226
1227
1228 static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
1229                                      u8 *ssid, size_t ssid_len)
1230 {
1231         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1232         struct ieee80211_hw_mode *mode;
1233         struct sk_buff *skb;
1234         struct ieee80211_mgmt *mgmt;
1235         u8 *pos, *supp_rates, *esupp_rates = NULL;
1236         int i;
1237
1238         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
1239         if (!skb) {
1240                 printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
1241                        "request\n", dev->name);
1242                 return;
1243         }
1244         skb_reserve(skb, local->hw.extra_tx_headroom);
1245
1246         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1247         memset(mgmt, 0, 24);
1248         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
1249                                            IEEE80211_STYPE_PROBE_REQ);
1250         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
1251         if (dst) {
1252                 memcpy(mgmt->da, dst, ETH_ALEN);
1253                 memcpy(mgmt->bssid, dst, ETH_ALEN);
1254         } else {
1255                 memset(mgmt->da, 0xff, ETH_ALEN);
1256                 memset(mgmt->bssid, 0xff, ETH_ALEN);
1257         }
1258         pos = skb_put(skb, 2 + ssid_len);
1259         *pos++ = WLAN_EID_SSID;
1260         *pos++ = ssid_len;
1261         memcpy(pos, ssid, ssid_len);
1262
1263         supp_rates = skb_put(skb, 2);
1264         supp_rates[0] = WLAN_EID_SUPP_RATES;
1265         supp_rates[1] = 0;
1266         mode = local->oper_hw_mode;
1267         for (i = 0; i < mode->num_rates; i++) {
1268                 struct ieee80211_rate *rate = &mode->rates[i];
1269                 if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
1270                         continue;
1271                 if (esupp_rates) {
1272                         pos = skb_put(skb, 1);
1273                         esupp_rates[1]++;
1274                 } else if (supp_rates[1] == 8) {
1275                         esupp_rates = skb_put(skb, 3);
1276                         esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
1277                         esupp_rates[1] = 1;
1278                         pos = &esupp_rates[2];
1279                 } else {
1280                         pos = skb_put(skb, 1);
1281                         supp_rates[1]++;
1282                 }
1283                 if (mode->mode == MODE_ATHEROS_TURBO)
1284                         *pos = rate->rate / 10;
1285                 else
1286                         *pos = rate->rate / 5;
1287         }
1288
1289         ieee80211_sta_tx(dev, skb, 0);
1290 }
1291
1292
1293 static int ieee80211_sta_wep_configured(struct net_device *dev)
1294 {
1295         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1296         if (!sdata || !sdata->default_key ||
1297             sdata->default_key->alg != ALG_WEP)
1298                 return 0;
1299         return 1;
1300 }
1301
1302
1303 static void ieee80211_auth_completed(struct net_device *dev,
1304                                      struct ieee80211_if_sta *ifsta)
1305 {
1306         printk(KERN_DEBUG "%s: authenticated\n", dev->name);
1307         ifsta->authenticated = 1;
1308         ieee80211_associate(dev, ifsta);
1309 }
1310
1311
1312 static void ieee80211_auth_challenge(struct net_device *dev,
1313                                      struct ieee80211_if_sta *ifsta,
1314                                      struct ieee80211_mgmt *mgmt,
1315                                      size_t len)
1316 {
1317         u8 *pos;
1318         struct ieee802_11_elems elems;
1319
1320         printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
1321         pos = mgmt->u.auth.variable;
1322         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
1323             == ParseFailed) {
1324                 printk(KERN_DEBUG "%s: failed to parse Auth(challenge)\n",
1325                        dev->name);
1326                 return;
1327         }
1328         if (!elems.challenge) {
1329                 printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
1330                        "frame\n", dev->name);
1331                 return;
1332         }
1333         ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
1334                             elems.challenge_len + 2, 1);
1335 }
1336
1337
1338 static void ieee80211_rx_mgmt_auth(struct net_device *dev,
1339                                    struct ieee80211_if_sta *ifsta,
1340                                    struct ieee80211_mgmt *mgmt,
1341                                    size_t len)
1342 {
1343         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344         u16 auth_alg, auth_transaction, status_code;
1345
1346         if (ifsta->state != IEEE80211_AUTHENTICATE &&
1347             sdata->type != IEEE80211_IF_TYPE_IBSS) {
1348                 printk(KERN_DEBUG "%s: authentication frame received from "
1349                        MAC_FMT ", but not in authenticate state - ignored\n",
1350                        dev->name, MAC_ARG(mgmt->sa));
1351                 return;
1352         }
1353
1354         if (len < 24 + 6) {
1355                 printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
1356                        "received from " MAC_FMT " - ignored\n",
1357                        dev->name, len, MAC_ARG(mgmt->sa));
1358                 return;
1359         }
1360
1361         if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
1362             memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
1363                 printk(KERN_DEBUG "%s: authentication frame received from "
1364                        "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
1365                        "ignored\n", dev->name, MAC_ARG(mgmt->sa),
1366                        MAC_ARG(mgmt->bssid));
1367                 return;
1368         }
1369
1370         if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
1371             memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
1372                 printk(KERN_DEBUG "%s: authentication frame received from "
1373                        "unknown BSSID (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
1374                        "ignored\n", dev->name, MAC_ARG(mgmt->sa),
1375                        MAC_ARG(mgmt->bssid));
1376                 return;
1377         }
1378
1379         auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
1380         auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
1381         status_code = le16_to_cpu(mgmt->u.auth.status_code);
1382
1383         printk(KERN_DEBUG "%s: RX authentication from " MAC_FMT " (alg=%d "
1384                "transaction=%d status=%d)\n",
1385                dev->name, MAC_ARG(mgmt->sa), auth_alg,
1386                auth_transaction, status_code);
1387
1388         if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
1389                 /* IEEE 802.11 standard does not require authentication in IBSS
1390                  * networks and most implementations do not seem to use it.
1391                  * However, try to reply to authentication attempts if someone
1392                  * has actually implemented this.
1393                  * TODO: Could implement shared key authentication. */
1394                 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
1395                         printk(KERN_DEBUG "%s: unexpected IBSS authentication "
1396                                "frame (alg=%d transaction=%d)\n",
1397                                dev->name, auth_alg, auth_transaction);
1398                         return;
1399                 }
1400                 ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
1401         }
1402
1403         if (auth_alg != ifsta->auth_alg ||
1404             auth_transaction != ifsta->auth_transaction) {
1405                 printk(KERN_DEBUG "%s: unexpected authentication frame "
1406                        "(alg=%d transaction=%d)\n",
1407                        dev->name, auth_alg, auth_transaction);
1408                 return;
1409         }
1410
1411         if (status_code != WLAN_STATUS_SUCCESS) {
1412                 printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
1413                        "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
1414                 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
1415                         u8 algs[3];
1416                         const int num_algs = ARRAY_SIZE(algs);
1417                         int i, pos;
1418                         algs[0] = algs[1] = algs[2] = 0xff;
1419                         if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
1420                                 algs[0] = WLAN_AUTH_OPEN;
1421                         if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
1422                                 algs[1] = WLAN_AUTH_SHARED_KEY;
1423                         if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
1424                                 algs[2] = WLAN_AUTH_LEAP;
1425                         if (ifsta->auth_alg == WLAN_AUTH_OPEN)
1426                                 pos = 0;
1427                         else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
1428                                 pos = 1;
1429                         else
1430                                 pos = 2;
1431                         for (i = 0; i < num_algs; i++) {
1432                                 pos++;
1433                                 if (pos >= num_algs)
1434                                         pos = 0;
1435                                 if (algs[pos] == ifsta->auth_alg ||
1436                                     algs[pos] == 0xff)
1437                                         continue;
1438                                 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
1439                                     !ieee80211_sta_wep_configured(dev))
1440                                         continue;
1441                                 ifsta->auth_alg = algs[pos];
1442                                 printk(KERN_DEBUG "%s: set auth_alg=%d for "
1443                                        "next try\n",
1444                                        dev->name, ifsta->auth_alg);
1445                                 break;
1446                         }
1447                 }
1448                 return;
1449         }
1450
1451         switch (ifsta->auth_alg) {
1452         case WLAN_AUTH_OPEN:
1453         case WLAN_AUTH_LEAP:
1454                 ieee80211_auth_completed(dev, ifsta);
1455                 break;
1456         case WLAN_AUTH_SHARED_KEY:
1457                 if (ifsta->auth_transaction == 4)
1458                         ieee80211_auth_completed(dev, ifsta);
1459                 else
1460                         ieee80211_auth_challenge(dev, ifsta, mgmt, len);
1461                 break;
1462         }
1463 }
1464
1465
1466 static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
1467                                      struct ieee80211_if_sta *ifsta,
1468                                      struct ieee80211_mgmt *mgmt,
1469                                      size_t len)
1470 {
1471         u16 reason_code;
1472
1473         if (len < 24 + 2) {
1474                 printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
1475                        "received from " MAC_FMT " - ignored\n",
1476                        dev->name, len, MAC_ARG(mgmt->sa));
1477                 return;
1478         }
1479
1480         if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
1481                 printk(KERN_DEBUG "%s: deauthentication frame received from "
1482                        "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
1483                        "ignored\n", dev->name, MAC_ARG(mgmt->sa),
1484                        MAC_ARG(mgmt->bssid));
1485                 return;
1486         }
1487
1488         reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
1489
1490         printk(KERN_DEBUG "%s: RX deauthentication from " MAC_FMT
1491                " (reason=%d)\n",
1492                dev->name, MAC_ARG(mgmt->sa), reason_code);
1493
1494         if (ifsta->authenticated) {
1495                 printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
1496         }
1497
1498         if (ifsta->state == IEEE80211_AUTHENTICATE ||
1499             ifsta->state == IEEE80211_ASSOCIATE ||
1500             ifsta->state == IEEE80211_ASSOCIATED) {
1501                 ifsta->state = IEEE80211_AUTHENTICATE;
1502                 mod_timer(&ifsta->timer, jiffies +
1503                                       IEEE80211_RETRY_AUTH_INTERVAL);
1504         }
1505
1506         ieee80211_set_disassoc(dev, ifsta, 1);
1507         ifsta->authenticated = 0;
1508 }
1509
1510
1511 static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
1512                                        struct ieee80211_if_sta *ifsta,
1513                                        struct ieee80211_mgmt *mgmt,
1514                                        size_t len)
1515 {
1516         u16 reason_code;
1517
1518         if (len < 24 + 2) {
1519                 printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
1520                        "received from " MAC_FMT " - ignored\n",
1521                        dev->name, len, MAC_ARG(mgmt->sa));
1522                 return;
1523         }
1524
1525         if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
1526                 printk(KERN_DEBUG "%s: disassociation frame received from "
1527                        "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
1528                        "ignored\n", dev->name, MAC_ARG(mgmt->sa),
1529                        MAC_ARG(mgmt->bssid));
1530                 return;
1531         }
1532
1533         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
1534
1535         printk(KERN_DEBUG "%s: RX disassociation from " MAC_FMT
1536                " (reason=%d)\n",
1537                dev->name, MAC_ARG(mgmt->sa), reason_code);
1538
1539         if (ifsta->associated)
1540                 printk(KERN_DEBUG "%s: disassociated\n", dev->name);
1541
1542         if (ifsta->state == IEEE80211_ASSOCIATED) {
1543                 ifsta->state = IEEE80211_ASSOCIATE;
1544                 mod_timer(&ifsta->timer, jiffies +
1545                                       IEEE80211_RETRY_AUTH_INTERVAL);
1546         }
1547
1548         ieee80211_set_disassoc(dev, ifsta, 0);
1549 }
1550
1551
1552 static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
1553                                          struct ieee80211_if_sta *ifsta,
1554                                          struct ieee80211_mgmt *mgmt,
1555                                          size_t len,
1556                                          int reassoc)
1557 {
1558         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1559         struct ieee80211_hw_mode *mode;
1560         struct sta_info *sta;
1561         u32 rates;
1562         u16 capab_info, status_code, aid;
1563         struct ieee802_11_elems elems;
1564         u8 *pos;
1565         int i, j;
1566
1567         /* AssocResp and ReassocResp have identical structure, so process both
1568          * of them in this function. */
1569
1570         if (ifsta->state != IEEE80211_ASSOCIATE) {
1571                 printk(KERN_DEBUG "%s: association frame received from "
1572                        MAC_FMT ", but not in associate state - ignored\n",
1573                        dev->name, MAC_ARG(mgmt->sa));
1574                 return;
1575         }
1576
1577         if (len < 24 + 6) {
1578                 printk(KERN_DEBUG "%s: too short (%zd) association frame "
1579                        "received from " MAC_FMT " - ignored\n",
1580                        dev->name, len, MAC_ARG(mgmt->sa));
1581                 return;
1582         }
1583
1584         if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
1585                 printk(KERN_DEBUG "%s: association frame received from "
1586                        "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - "
1587                        "ignored\n", dev->name, MAC_ARG(mgmt->sa),
1588                        MAC_ARG(mgmt->bssid));
1589                 return;
1590         }
1591
1592         capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
1593         status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
1594         aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
1595         if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1596                 printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
1597                        "set\n", dev->name, aid);
1598         aid &= ~(BIT(15) | BIT(14));
1599
1600         printk(KERN_DEBUG "%s: RX %sssocResp from " MAC_FMT " (capab=0x%x "
1601                "status=%d aid=%d)\n",
1602                dev->name, reassoc ? "Rea" : "A", MAC_ARG(mgmt->sa),
1603                capab_info, status_code, aid);
1604
1605         if (status_code != WLAN_STATUS_SUCCESS) {
1606                 printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
1607                        dev->name, status_code);
1608                 if (status_code == WLAN_STATUS_REASSOC_NO_ASSOC)
1609                         ifsta->prev_bssid_set = 0;
1610                 return;
1611         }
1612
1613         pos = mgmt->u.assoc_resp.variable;
1614         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
1615             == ParseFailed) {
1616                 printk(KERN_DEBUG "%s: failed to parse AssocResp\n",
1617                        dev->name);
1618                 return;
1619         }
1620
1621         if (!elems.supp_rates) {
1622                 printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
1623                        dev->name);
1624                 return;
1625         }
1626
1627         printk(KERN_DEBUG "%s: associated\n", dev->name);
1628         ifsta->aid = aid;
1629         ifsta->ap_capab = capab_info;
1630
1631         kfree(ifsta->assocresp_ies);
1632         ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
1633         ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_ATOMIC);
1634         if (ifsta->assocresp_ies)
1635                 memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
1636
1637         ieee80211_set_associated(dev, ifsta, 1);
1638
1639         /* Add STA entry for the AP */
1640         sta = sta_info_get(local, ifsta->bssid);
1641         if (!sta) {
1642                 struct ieee80211_sta_bss *bss;
1643                 sta = sta_info_add(local, dev, ifsta->bssid, GFP_ATOMIC);
1644                 if (!sta) {
1645                         printk(KERN_DEBUG "%s: failed to add STA entry for the"
1646                                " AP\n", dev->name);
1647                         return;
1648                 }
1649                 bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
1650                 if (bss) {
1651                         sta->last_rssi = bss->rssi;
1652                         sta->last_signal = bss->signal;
1653                         sta->last_noise = bss->noise;
1654                         ieee80211_rx_bss_put(dev, bss);
1655                 }
1656         }
1657
1658         sta->dev = dev;
1659         sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
1660         sta->assoc_ap = 1;
1661
1662         rates = 0;
1663         mode = local->oper_hw_mode;
1664         for (i = 0; i < elems.supp_rates_len; i++) {
1665                 int rate = (elems.supp_rates[i] & 0x7f) * 5;
1666                 if (mode->mode == MODE_ATHEROS_TURBO)
1667                         rate *= 2;
1668                 for (j = 0; j < mode->num_rates; j++)
1669                         if (mode->rates[j].rate == rate)
1670                                 rates |= BIT(j);
1671         }
1672         for (i = 0; i < elems.ext_supp_rates_len; i++) {
1673                 int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
1674                 if (mode->mode == MODE_ATHEROS_TURBO)
1675                         rate *= 2;
1676                 for (j = 0; j < mode->num_rates; j++)
1677                         if (mode->rates[j].rate == rate)
1678                                 rates |= BIT(j);
1679         }
1680         sta->supp_rates = rates;
1681
1682         if (elems.ht_extra_param && elems.ht_cap_param && elems.wmm_param &&
1683             ifsta->ht_enabled && local->ops->conf_ht){
1684                 int rc;
1685
1686                 rc = local->ops->conf_ht(local_to_hw(local),
1687                                          (struct ieee80211_ht_capability *)
1688                                          elems.ht_cap_param,
1689                                          (struct ieee80211_ht_additional_info *)
1690                                          elems.ht_extra_param);
1691                 if (!rc)
1692                         sta->flags |= WLAN_STA_HT;
1693         }
1694
1695
1696         rate_control_rate_init(sta, local);
1697
1698         if (elems.wmm_param && ifsta->wmm_enabled) {
1699                 sta->flags |= WLAN_STA_WME;
1700                 ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
1701                                          elems.wmm_param_len);
1702         }
1703
1704
1705         sta_info_put(sta);
1706
1707         ieee80211_associated(dev, ifsta);
1708 }
1709
1710 static u32 calculate_mpdu_exchange_time(struct ieee80211_local *local,
1711                                         struct ieee80211_elem_tspec *tspec)
1712 {
1713         /*
1714          * FIXME: MPDUExchangeTime = duration(Nominal MSDU Size, Min PHY Rate) +
1715          *                           SIFS + ACK duration
1716          */
1717         int extra = 0; /* SIFS + ACK */
1718
1719         switch (local->hw.conf.phymode) {
1720         case MODE_IEEE80211A:
1721                 extra = 16 + 24;
1722                 break;
1723         case MODE_IEEE80211B:
1724                 extra = 10 + 203;
1725                 break;
1726         case MODE_IEEE80211G:
1727         default:
1728                 extra = 10 + 30;
1729                 break;
1730         }
1731         return (tspec->nominal_msdu_size * 8) /
1732                 (tspec->min_phy_rate / 1000000) + extra;
1733 }
1734
1735 static void sta_update_tspec(struct ieee80211_local *local,
1736                              struct ieee80211_if_sta *ifsta,
1737                              int action, struct ieee80211_elem_tspec *tspec)
1738 {
1739         u8 tsid = IEEE80211_TSINFO_TSID(tspec->ts_info);
1740         u8 index = ieee80211_ts_index(IEEE80211_TSINFO_DIR(tspec->ts_info));
1741
1742         switch (action) {
1743         case WLAN_ACTION_QOS_ADDTS_RESP:
1744                 ifsta->ts_data[tsid][index].status = TS_STATUS_ACTIVE;
1745                 ifsta->ts_data[tsid][index].up =
1746                         IEEE80211_TSINFO_UP(tspec->ts_info);
1747                 ifsta->ts_data[tsid][index].used_time_usec = 0;
1748                 ifsta->ts_data[tsid][index].admitted_time_usec +=
1749                     ifsta->dot11EDCAAveragingPeriod * tspec->medium_time * 32;
1750                 ifsta->MPDUExchangeTime =
1751                         calculate_mpdu_exchange_time(local, tspec);
1752                 break;
1753         case WLAN_ACTION_QOS_DELTS:
1754                 ifsta->ts_data[tsid][index].status = TS_STATUS_INACTIVE;
1755                 ifsta->ts_data[tsid][index].used_time_usec = 0;
1756                 ifsta->ts_data[tsid][index].admitted_time_usec -=
1757                     ifsta->dot11EDCAAveragingPeriod * tspec->medium_time * 32;
1758                 if (ifsta->ts_data[tsid][index].admitted_time_usec < 0)
1759                         ifsta->ts_data[tsid][index].admitted_time_usec = 0;
1760                 ifsta->MPDUExchangeTime = 0;
1761                 break;
1762         default:
1763                 printk(KERN_ERR "%s: invalid action type %d\n", __FUNCTION__,
1764                        action);
1765                 break;
1766         }
1767 }
1768
1769 static void sta_parse_tspec(struct net_device *dev,
1770                             struct ieee80211_if_sta *ifsta,
1771                             struct ieee80211_mgmt *mgmt, size_t len, u8 prefix,
1772                             struct ieee80211_elem_tspec *tspec)
1773 {
1774         struct ieee802_11_elems elems;
1775         u8 *pos;
1776
1777         /*
1778         printk(KERN_DEBUG "Dialog_token: %d, TID: %u, Direction: %u, PSB: %d, "
1779                "UP: %d\n", mgmt->u.action.u.wme_action.dialog_token,
1780                IEEE80211_TSINFO_TSID(tspec->ts_info),
1781                IEEE80211_TSINFO_DIR(tspec->ts_info),
1782                IEEE80211_TSINFO_APSD(tspec->ts_info),
1783                IEEE80211_TSINFO_UP(tspec->ts_info));
1784         */
1785
1786         if (mgmt->u.action.category == WLAN_CATEGORY_QOS)
1787                 pos = mgmt->u.action.u.addts_resp.variable + prefix;
1788         else
1789                 pos = mgmt->u.action.u.wme_action.variable + prefix;
1790
1791         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
1792             == ParseFailed) {
1793                 printk(KERN_DEBUG "%s: failed to parse TSPEC\n", dev->name);
1794                 return;
1795         }
1796         memcpy(tspec, elems.tspec, sizeof(*tspec));
1797 }
1798
1799 int dls_link_status(struct ieee80211_local *local, u8 *addr)
1800 {
1801         struct sta_info *dls;
1802         int ret = DLS_STATUS_NOLINK;
1803
1804         if ((dls = dls_info_get(local, addr)) != NULL) {
1805                 ret = dls->dls_status;
1806                 sta_info_put(dls);
1807         }
1808         return ret;
1809 }
1810
1811 static void sta_process_dls_req(struct net_device *dev,
1812                                 struct ieee80211_if_sta *ifsta,
1813                                 struct ieee80211_mgmt *mgmt, size_t len)
1814 {
1815         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1816         struct sta_info *dls;
1817         u8 *src = mgmt->u.action.u.dls_req.src;
1818         struct ieee802_11_elems elems;
1819         struct ieee80211_rate *rates;
1820         size_t baselen, num_rates;
1821         int i, j;
1822         struct ieee80211_hw_mode *mode;
1823         u32 supp_rates = 0;
1824
1825         printk(KERN_DEBUG "Receive DLS request from "
1826                "%02X:%02X:%02X:%02X:%02X:%02X\n",
1827                src[0], src[1], src[2], src[3], src[4], src[5]);
1828
1829         baselen = (u8 *)mgmt->u.action.u.dls_req.variable - (u8 *)mgmt;
1830         if (baselen > len)
1831                 return;
1832
1833         if (ieee802_11_parse_elems(mgmt->u.action.u.dls_req.variable,
1834                                    len - baselen, &elems) == ParseFailed) {
1835                 printk(KERN_ERR "DLS Parse support rates failed.\n");
1836                 return;
1837         }
1838         mode = local->sta_scanning ?
1839                local->scan_hw_mode : local->oper_hw_mode;
1840         rates = mode->rates;
1841         num_rates = mode->num_rates;
1842
1843         for (i = 0; i < elems.supp_rates_len + elems.ext_supp_rates_len; i++) {
1844                 u8 rate = 0;
1845                 if (i < elems.supp_rates_len)
1846                         rate = elems.supp_rates[i];
1847                 else if (elems.ext_supp_rates)
1848                         rate = elems.ext_supp_rates[i - elems.supp_rates_len];
1849                 rate = 5 * (rate & 0x7f);
1850                 if (mode->mode == MODE_ATHEROS_TURBO)
1851                         rate *= 2;
1852                 for (j = 0; j < num_rates; j++)
1853                         if (rates[j].rate == rate)
1854                                 supp_rates |= BIT(j);
1855         }
1856         if (supp_rates == 0) {
1857                 /* Send DLS failed Response to the peer because
1858                  * the supported rates are mismatch */
1859                 ieee80211_send_dls_resp(dev, ifsta, src,
1860                                         WLAN_REASON_QSTA_NOT_USE);
1861                 return;
1862         }
1863
1864         dls = dls_info_get(local, src);
1865         if (!dls)
1866                 dls = sta_info_add(local, dev, src, GFP_ATOMIC);
1867         if (!dls)
1868                 return;
1869
1870         dls->dls_status = DLS_STATUS_OK;
1871         dls->dls_timeout = le16_to_cpu(mgmt->u.action.u.dls_req.timeout);
1872         dls->supp_rates = supp_rates;
1873
1874         /* Send DLS successful Response to the peer */
1875         ieee80211_send_dls_resp(dev, ifsta, src, 0);
1876 }
1877
1878
1879 static void sta_process_dls_resp(struct net_device *dev,
1880                                  struct ieee80211_if_sta *ifsta,
1881                                  struct ieee80211_mgmt *mgmt, size_t len)
1882 {
1883         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1884         struct sta_info *dls;
1885         u8 *src = mgmt->u.action.u.dls_resp.src;
1886         struct ieee802_11_elems elems;
1887         struct ieee80211_rate *rates;
1888         size_t baselen, num_rates;
1889         int i, j;
1890         struct ieee80211_hw_mode *mode;
1891         u32 supp_rates = 0;
1892
1893         printk(KERN_DEBUG "Receive DLS response from "
1894                "%02X:%02X:%02X:%02X:%02X:%02X\n",
1895                src[0], src[1], src[2], src[3], src[4], src[5]);
1896
1897         if (mgmt->u.action.u.dls_resp.status_code) {
1898                 printk(KERN_ERR "DLS setup refused by peer. Reason %d\n",
1899                        mgmt->u.action.u.dls_resp.status_code);
1900                 return;
1901         }
1902
1903         baselen = (u8 *)mgmt->u.action.u.dls_resp.variable - (u8 *)mgmt;
1904         if (baselen > len)
1905                 return;
1906
1907         if (ieee802_11_parse_elems(mgmt->u.action.u.dls_resp.variable,
1908                                    len - baselen, &elems) == ParseFailed) {
1909                 printk(KERN_ERR "DLS Parse support rates failed.\n");
1910                 return;
1911         }
1912         mode = local->sta_scanning ?
1913                local->scan_hw_mode : local->oper_hw_mode;
1914         rates = mode->rates;
1915         num_rates = mode->num_rates;
1916
1917         for (i = 0; i < elems.supp_rates_len + elems.ext_supp_rates_len; i++) {
1918                 u8 rate = 0;
1919                 if (i < elems.supp_rates_len)
1920                         rate = elems.supp_rates[i];
1921                 else if (elems.ext_supp_rates)
1922                         rate = elems.ext_supp_rates[i - elems.supp_rates_len];
1923                 rate = 5 * (rate & 0x7f);
1924                 if (mode->mode == MODE_ATHEROS_TURBO)
1925                         rate *= 2;
1926                 for (j = 0; j < num_rates; j++)
1927                         if (rates[j].rate == rate)
1928                                 supp_rates |= BIT(j);
1929         }
1930
1931         dls = dls_info_get(local, src);
1932         if (!dls)
1933                 dls = sta_info_add(local, dev, src, GFP_ATOMIC);
1934         if (!dls)
1935                 return;
1936
1937         dls->supp_rates = supp_rates;
1938         dls->dls_status = DLS_STATUS_OK;
1939         sta_info_put(dls);
1940 }
1941
1942
1943 static void sta_process_dls_teardown(struct net_device *dev,
1944                                      struct ieee80211_if_sta *ifsta,
1945                                      struct ieee80211_mgmt *mgmt, size_t len)
1946 {
1947         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1948         u8 *src = mgmt->u.action.u.dls_teardown.src;
1949         struct sta_info *dls;
1950
1951         printk(KERN_DEBUG "DLS Teardown received from "
1952                "%02X:%02X:%02X:%02X:%02X:%02X. Reason %d\n",
1953                src[0], src[1], src[2], src[3], src[4], src[5],
1954                mgmt->u.action.u.dls_teardown.reason_code);
1955
1956         dls = dls_info_get(local, src);
1957         if (dls)
1958                 sta_info_free(dls, 0);
1959         return;
1960 }
1961
1962
1963 /* Caller must hold local->sta_bss_lock */
1964 static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
1965                                         struct ieee80211_sta_bss *bss)
1966 {
1967         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1968         bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
1969         local->sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1970 }
1971
1972
1973 /* Caller must hold local->sta_bss_lock */
1974 static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
1975                                         struct ieee80211_sta_bss *bss)
1976 {
1977         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1978         struct ieee80211_sta_bss *b, *prev = NULL;
1979         b = local->sta_bss_hash[STA_HASH(bss->bssid)];
1980         while (b) {
1981                 if (b == bss) {
1982                         if (!prev)
1983                                 local->sta_bss_hash[STA_HASH(bss->bssid)] =
1984                                         bss->hnext;
1985                         else
1986                                 prev->hnext = bss->hnext;
1987                         break;
1988                 }
1989                 prev = b;
1990                 b = b->hnext;
1991         }
1992 }
1993
1994
1995 static struct ieee80211_sta_bss *
1996 ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid)
1997 {
1998         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1999         struct ieee80211_sta_bss *bss;
2000
2001         bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
2002         if (!bss)
2003                 return NULL;
2004         memset(bss, 0, sizeof(*bss));
2005         atomic_inc(&bss->users);
2006         atomic_inc(&bss->users);
2007         memcpy(bss->bssid, bssid, ETH_ALEN);
2008
2009         spin_lock_bh(&local->sta_bss_lock);
2010         /* TODO: order by RSSI? */
2011         list_add_tail(&bss->list, &local->sta_bss_list);
2012         __ieee80211_rx_bss_hash_add(dev, bss);
2013         spin_unlock_bh(&local->sta_bss_lock);
2014         return bss;
2015 }
2016
2017
2018 static struct ieee80211_sta_bss *
2019 ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid)
2020 {
2021         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2022         struct ieee80211_sta_bss *bss;
2023
2024         spin_lock_bh(&local->sta_bss_lock);
2025         bss = local->sta_bss_hash[STA_HASH(bssid)];
2026         while (bss) {
2027                 if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0) {
2028                         atomic_inc(&bss->users);
2029                         break;
2030                 }
2031                 bss = bss->hnext;
2032         }
2033         spin_unlock_bh(&local->sta_bss_lock);
2034         return bss;
2035 }
2036
2037
2038 static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
2039 {
2040         kfree(bss->wpa_ie);
2041         kfree(bss->rsn_ie);
2042         kfree(bss->wmm_ie);
2043         kfree(bss->ht_ie);
2044         kfree(bss);
2045 }
2046
2047
2048 static void ieee80211_rx_bss_put(struct net_device *dev,
2049                                  struct ieee80211_sta_bss *bss)
2050 {
2051         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2052         if (!atomic_dec_and_test(&bss->users))
2053                 return;
2054
2055         spin_lock_bh(&local->sta_bss_lock);
2056         __ieee80211_rx_bss_hash_del(dev, bss);
2057         list_del(&bss->list);
2058         spin_unlock_bh(&local->sta_bss_lock);
2059         ieee80211_rx_bss_free(bss);
2060 }
2061
2062
2063 void ieee80211_rx_bss_list_init(struct net_device *dev)
2064 {
2065         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2066         spin_lock_init(&local->sta_bss_lock);
2067         INIT_LIST_HEAD(&local->sta_bss_list);
2068 }
2069
2070
2071 void ieee80211_rx_bss_list_deinit(struct net_device *dev)
2072 {
2073         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2074         struct ieee80211_sta_bss *bss, *tmp;
2075
2076         list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
2077                 ieee80211_rx_bss_put(dev, bss);
2078 }
2079
2080
2081 static void ieee80211_rx_bss_info(struct net_device *dev,
2082                                   struct ieee80211_mgmt *mgmt,
2083                                   size_t len,
2084                                   struct ieee80211_rx_status *rx_status,
2085                                   int beacon)
2086 {
2087         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2088         struct ieee802_11_elems elems;
2089         size_t baselen;
2090         int channel, invalid = 0, clen;
2091         struct ieee80211_sta_bss *bss;
2092         struct sta_info *sta;
2093         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2094         u64 timestamp;
2095
2096         if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
2097                 return; /* ignore ProbeResp to foreign address */
2098
2099 #if 0
2100         printk(KERN_DEBUG "%s: RX %s from " MAC_FMT " to " MAC_FMT "\n",
2101                dev->name, beacon ? "Beacon" : "Probe Response",
2102                MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da));
2103 #endif
2104
2105         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2106         if (baselen > len)
2107                 return;
2108
2109         timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
2110
2111         if (sdata->type == IEEE80211_IF_TYPE_IBSS && beacon &&
2112             memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2113 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2114                 static unsigned long last_tsf_debug = 0;
2115                 u64 tsf;
2116                 if (local->ops->get_tsf)
2117                         tsf = local->ops->get_tsf(local_to_hw(local));
2118                 else
2119                         tsf = -1LLU;
2120                 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
2121                         printk(KERN_DEBUG "RX beacon SA=" MAC_FMT " BSSID="
2122                                MAC_FMT " TSF=0x%llx BCN=0x%llx diff=%lld "
2123                                "@%lu\n",
2124                                MAC_ARG(mgmt->sa), MAC_ARG(mgmt->bssid),
2125                                (unsigned long long)tsf,
2126                                (unsigned long long)timestamp,
2127                                (unsigned long long)(tsf - timestamp),
2128                                jiffies);
2129                         last_tsf_debug = jiffies;
2130                 }
2131 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2132         }
2133
2134         if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
2135                                    &elems) == ParseFailed)
2136                 invalid = 1;
2137
2138         if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
2139             memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
2140             (sta = sta_info_get(local, mgmt->sa))) {
2141                 struct ieee80211_hw_mode *mode;
2142                 struct ieee80211_rate *rates;
2143                 size_t num_rates;
2144                 u32 supp_rates, prev_rates;
2145                 int i, j;
2146
2147                 mode = local->sta_scanning ?
2148                        local->scan_hw_mode : local->oper_hw_mode;
2149                 rates = mode->rates;
2150                 num_rates = mode->num_rates;
2151
2152                 supp_rates = 0;
2153                 for (i = 0; i < elems.supp_rates_len +
2154                              elems.ext_supp_rates_len; i++) {
2155                         u8 rate = 0;
2156                         int own_rate;
2157                         if (i < elems.supp_rates_len)
2158                                 rate = elems.supp_rates[i];
2159                         else if (elems.ext_supp_rates)
2160                                 rate = elems.ext_supp_rates
2161                                         [i - elems.supp_rates_len];
2162                         own_rate = 5 * (rate & 0x7f);
2163                         if (mode->mode == MODE_ATHEROS_TURBO)
2164                                 own_rate *= 2;
2165                         for (j = 0; j < num_rates; j++)
2166                                 if (rates[j].rate == own_rate)
2167                                         supp_rates |= BIT(j);
2168                 }
2169
2170                 prev_rates = sta->supp_rates;
2171                 sta->supp_rates &= supp_rates;
2172                 if (sta->supp_rates == 0) {
2173                         /* No matching rates - this should not really happen.
2174                          * Make sure that at least one rate is marked
2175                          * supported to avoid issues with TX rate ctrl. */
2176                         sta->supp_rates = sdata->u.sta.supp_rates_bits;
2177                 }
2178                 if (sta->supp_rates != prev_rates) {
2179                         printk(KERN_DEBUG "%s: updated supp_rates set for "
2180                                MAC_FMT " based on beacon info (0x%x & 0x%x -> "
2181                                "0x%x)\n",
2182                                dev->name, MAC_ARG(sta->addr), prev_rates,
2183                                supp_rates, sta->supp_rates);
2184                 }
2185                 sta_info_put(sta);
2186         }
2187
2188         if (!elems.ssid)
2189                 return;
2190
2191         if (elems.ds_params && elems.ds_params_len == 1)
2192                 channel = elems.ds_params[0];
2193         else
2194                 channel = rx_status->channel;
2195
2196         bss = ieee80211_rx_bss_get(dev, mgmt->bssid);
2197         if (!bss) {
2198                 bss = ieee80211_rx_bss_add(dev, mgmt->bssid);
2199                 if (!bss)
2200                         return;
2201         } else {
2202 #if 0
2203                 /* TODO: order by RSSI? */
2204                 spin_lock_bh(&local->sta_bss_lock);
2205                 list_move_tail(&bss->list, &local->sta_bss_list);
2206                 spin_unlock_bh(&local->sta_bss_lock);
2207 #endif
2208         }
2209
2210         if (bss->probe_resp && beacon) {
2211                 /* Do not allow beacon to override data from Probe Response. */
2212                 ieee80211_rx_bss_put(dev, bss);
2213                 return;
2214         }
2215
2216         bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
2217         bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
2218         if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) {
2219                 memcpy(bss->ssid, elems.ssid, elems.ssid_len);
2220                 bss->ssid_len = elems.ssid_len;
2221         }
2222
2223         bss->supp_rates_len = 0;
2224         if (elems.supp_rates) {
2225                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
2226                 if (clen > elems.supp_rates_len)
2227                         clen = elems.supp_rates_len;
2228                 memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
2229                        clen);
2230                 bss->supp_rates_len += clen;
2231         }
2232         if (elems.ext_supp_rates) {
2233                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
2234                 if (clen > elems.ext_supp_rates_len)
2235                         clen = elems.ext_supp_rates_len;
2236                 memcpy(&bss->supp_rates[bss->supp_rates_len],
2237                        elems.ext_supp_rates, clen);
2238                 bss->supp_rates_len += clen;
2239         }
2240
2241         if (elems.wpa &&
2242             (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
2243              memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
2244                 kfree(bss->wpa_ie);
2245                 bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
2246                 if (bss->wpa_ie) {
2247                         memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
2248                         bss->wpa_ie_len = elems.wpa_len + 2;
2249                 } else
2250                         bss->wpa_ie_len = 0;
2251         } else if (!elems.wpa && bss->wpa_ie) {
2252                 kfree(bss->wpa_ie);
2253                 bss->wpa_ie = NULL;
2254                 bss->wpa_ie_len = 0;
2255         }
2256
2257         if (elems.rsn &&
2258             (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
2259              memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
2260                 kfree(bss->rsn_ie);
2261                 bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
2262                 if (bss->rsn_ie) {
2263                         memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
2264                         bss->rsn_ie_len = elems.rsn_len + 2;
2265                 } else
2266                         bss->rsn_ie_len = 0;
2267         } else if (!elems.rsn && bss->rsn_ie) {
2268                 kfree(bss->rsn_ie);
2269                 bss->rsn_ie = NULL;
2270                 bss->rsn_ie_len = 0;
2271         }
2272
2273         if (elems.wmm_param &&
2274             (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
2275              memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
2276                 kfree(bss->wmm_ie);
2277                 bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
2278                 if (bss->wmm_ie) {
2279                         memcpy(bss->wmm_ie, elems.wmm_param - 2,
2280                                elems.wmm_param_len + 2);
2281                         bss->wmm_ie_len = elems.wmm_param_len + 2;
2282                 } else
2283                         bss->wmm_ie_len = 0;
2284         } else if (!elems.wmm_param && bss->wmm_ie) {
2285                 kfree(bss->wmm_ie);
2286                 bss->wmm_ie = NULL;
2287                 bss->wmm_ie_len = 0;
2288         }
2289
2290         if (elems.ht_cap_param &&
2291             (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_param_len ||
2292              memcmp(bss->ht_ie, elems.ht_cap_param, elems.ht_cap_param_len))) {
2293                 if (bss->ht_ie)
2294                         kfree(bss->ht_ie);
2295                 bss->ht_ie = kmalloc(elems.ht_cap_param_len + 2, GFP_ATOMIC);
2296                 if (bss->ht_ie) {
2297                         memcpy(bss->ht_ie, elems.ht_cap_param - 2,
2298                                elems.ht_cap_param_len + 2);
2299                         bss->ht_ie_len = elems.ht_cap_param_len + 2;
2300                 } else
2301                         bss->ht_ie_len = 0;
2302         } else if (!elems.ht_cap_param && bss->ht_ie) {
2303                 kfree(bss->ht_ie);
2304                 bss->ht_ie = NULL;
2305                 bss->ht_ie_len = 0;
2306         }
2307
2308         bss->hw_mode = rx_status->phymode;
2309         bss->channel = channel;
2310         bss->freq = rx_status->freq;
2311         if (channel != rx_status->channel &&
2312             (bss->hw_mode == MODE_IEEE80211G ||
2313              bss->hw_mode == MODE_IEEE80211B) &&
2314             channel >= 1 && channel <= 14) {
2315                 static const int freq_list[] = {
2316                         2412, 2417, 2422, 2427, 2432, 2437, 2442,
2317                         2447, 2452, 2457, 2462, 2467, 2472, 2484
2318                 };
2319                 /* IEEE 802.11g/b mode can receive packets from neighboring
2320                  * channels, so map the channel into frequency. */
2321                 bss->freq = freq_list[channel - 1];
2322         }
2323         bss->timestamp = timestamp;
2324         bss->last_update = jiffies;
2325         bss->rssi = rx_status->ssi;
2326         bss->signal = rx_status->signal;
2327         bss->noise = rx_status->noise;
2328         if (!beacon)
2329                 bss->probe_resp++;
2330         ieee80211_rx_bss_put(dev, bss);
2331 }
2332
2333
2334 static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
2335                                          struct ieee80211_mgmt *mgmt,
2336                                          size_t len,
2337                                          struct ieee80211_rx_status *rx_status)
2338 {
2339         ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
2340 }
2341
2342
2343 static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
2344                                      struct ieee80211_mgmt *mgmt,
2345                                      size_t len,
2346                                      struct ieee80211_rx_status *rx_status)
2347 {
2348         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2349         struct ieee80211_sub_if_data *sdata;
2350         struct ieee80211_if_sta *ifsta;
2351         int use_protection;
2352         size_t baselen;
2353         struct ieee802_11_elems elems;
2354
2355         ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
2356
2357         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2358         if (sdata->type != IEEE80211_IF_TYPE_STA)
2359                 return;
2360         ifsta = &sdata->u.sta;
2361
2362         if (!ifsta->associated ||
2363             memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
2364                 return;
2365
2366         /* Process beacon from the current BSS */
2367         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2368         if (baselen > len)
2369                 return;
2370
2371         if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
2372                                    &elems) == ParseFailed)
2373                 return;
2374
2375         use_protection = 0;
2376         if (elems.erp_info && elems.erp_info_len >= 1) {
2377                 use_protection =
2378                         (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
2379         }
2380
2381         if (use_protection != !!ifsta->use_protection) {
2382                 if (net_ratelimit()) {
2383                         printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
2384                                MAC_FMT ")\n",
2385                                dev->name,
2386                                use_protection ? "enabled" : "disabled",
2387                                MAC_ARG(ifsta->bssid));
2388                 }
2389                 ifsta->use_protection = use_protection ? 1 : 0;
2390                 local->cts_protect_erp_frames = use_protection;
2391         }
2392
2393         if (elems.wmm_param && ifsta->wmm_enabled) {
2394                 ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
2395                                          elems.wmm_param_len);
2396         }
2397 }
2398
2399
2400 static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
2401                                         struct ieee80211_if_sta *ifsta,
2402                                         struct ieee80211_mgmt *mgmt,
2403                                         size_t len,
2404                                         struct ieee80211_rx_status *rx_status)
2405 {
2406         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2407         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2408         int tx_last_beacon;
2409         struct sk_buff *skb;
2410         struct ieee80211_mgmt *resp;
2411         u8 *pos, *end;
2412
2413         if (sdata->type != IEEE80211_IF_TYPE_IBSS ||
2414             ifsta->state != IEEE80211_IBSS_JOINED ||
2415             len < 24 + 2 || !ifsta->probe_resp)
2416                 return;
2417
2418         if (local->ops->tx_last_beacon)
2419                 tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
2420         else
2421                 tx_last_beacon = 1;
2422
2423 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2424         printk(KERN_DEBUG "%s: RX ProbeReq SA=" MAC_FMT " DA=" MAC_FMT " BSSID="
2425                MAC_FMT " (tx_last_beacon=%d)\n",
2426                dev->name, MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da),
2427                MAC_ARG(mgmt->bssid), tx_last_beacon);
2428 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2429
2430         if (!tx_last_beacon)
2431                 return;
2432
2433         if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
2434             memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2435                 return;
2436
2437         end = ((u8 *) mgmt) + len;
2438         pos = mgmt->u.probe_req.variable;
2439         if (pos[0] != WLAN_EID_SSID ||
2440             pos + 2 + pos[1] > end) {
2441                 if (net_ratelimit()) {
2442                         printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
2443                                "from " MAC_FMT "\n",
2444                                dev->name, MAC_ARG(mgmt->sa));
2445                 }
2446                 return;
2447         }
2448         if (pos[1] != 0 &&
2449             (pos[1] != ifsta->ssid_len ||
2450              memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
2451                 /* Ignore ProbeReq for foreign SSID */
2452                 return;
2453         }
2454
2455         /* Reply with ProbeResp */
2456         skb = skb_copy(ifsta->probe_resp, GFP_ATOMIC);
2457         if (!skb)
2458                 return;
2459
2460         resp = (struct ieee80211_mgmt *) skb->data;
2461         memcpy(resp->da, mgmt->sa, ETH_ALEN);
2462 #ifdef CONFIG_MAC80211_IBSS_DEBUG
2463         printk(KERN_DEBUG "%s: Sending ProbeResp to " MAC_FMT "\n",
2464                dev->name, MAC_ARG(resp->da));
2465 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
2466         ieee80211_sta_tx(dev, skb, 0);
2467 }
2468
2469 static void ieee80211_send_addba_resp(struct net_device *dev,
2470                                       struct ieee80211_mgmt *mgmt_src,
2471                                       size_t len,
2472                                       u16 status)
2473 {
2474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2475         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
2476         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2477         struct sk_buff *skb;
2478         struct ieee80211_mgmt *mgmt;
2479
2480         skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
2481         if (!skb) {
2482                 printk(KERN_DEBUG "%s: failed to allocate buffer "
2483                        "for addba resp frame\n", dev->name);
2484                 return;
2485         }
2486
2487         skb_reserve(skb, local->hw.extra_tx_headroom);
2488         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
2489         memset(mgmt, 0, 24);
2490         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
2491         memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
2492         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
2493         mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
2494                                            IEEE80211_STYPE_ACTION);
2495
2496         skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
2497         mgmt->u.action.category = WLAN_CATEGORY_BACK;
2498         mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
2499         mgmt->u.action.u.addba_resp.dialog_token =
2500                 mgmt_src->u.action.u.addba_req.dialog_token;
2501         mgmt->u.action.u.addba_resp.capab =
2502                 mgmt_src->u.action.u.addba_req.capab;
2503         mgmt->u.action.u.addba_resp.timeout =
2504                 mgmt_src->u.action.u.addba_req.timeout;
2505         mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
2506
2507         ieee80211_sta_tx(dev, skb, 0);
2508
2509         return;
2510 }
2511
2512 static void ieee80211_rx_mgmt_action(struct net_device *dev,
2513                                      struct ieee80211_if_sta *ifsta,
2514                                      struct ieee80211_mgmt *mgmt,
2515                                      size_t len)
2516 {
2517         u8 prefix = 0;
2518         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2519         struct ieee80211_elem_tspec tspec;
2520
2521         if (len < IEEE80211_MIN_ACTION_SIZE)
2522                 return;
2523
2524         switch (mgmt->u.action.category) {
2525         case WLAN_CATEGORY_QOS:
2526         case WLAN_CATEGORY_WMM:
2527                 if (len < 24 + 4) {
2528                         printk(KERN_DEBUG "%s: too short (%zd) QoS category "
2529                                "frame received from " MAC_FMT " - ignored\n",
2530                                dev->name, len, MAC_ARG(mgmt->sa));
2531                         return;
2532                 }
2533                 switch (mgmt->u.action.u.wme_action.action_code) {
2534                 case WLAN_ACTION_QOS_ADDTS_REQ:
2535                         printk(KERN_DEBUG "%s: WLAN_ACTION_QOS_ADDTS_REQ "
2536                                "received in Non-AP STA mode!\n", dev->name);
2537                         return;
2538                 case WLAN_ACTION_QOS_ADDTS_RESP:
2539                         if (mgmt->u.action.u.wme_action.status_code == 47) {
2540                                 /* TODO: handle TS Delay */
2541                                 prefix = 6;
2542                         }
2543                         /* TODO: handle TCLAS, TCLAS Porcessing here */
2544
2545                         if (mgmt->u.action.u.wme_action.status_code == 0) {
2546                                 /* TODO: handle Schedule */
2547                                 sta_parse_tspec(dev, ifsta, mgmt, len,
2548                                                 prefix, &tspec);
2549                                 sta_update_tspec(local, ifsta,
2550                                                  WLAN_ACTION_QOS_ADDTS_RESP,
2551                                                  &tspec);
2552                                 mod_timer(&ifsta->admit_timer, jiffies +
2553                                           ifsta->dot11EDCAAveragingPeriod * HZ);
2554                         }
2555                         break;
2556                 case WLAN_ACTION_QOS_DELTS:
2557                         sta_parse_tspec(dev, ifsta, mgmt, len, prefix, &tspec);
2558                         sta_update_tspec(local, ifsta,
2559                                          WLAN_ACTION_QOS_DELTS, &tspec);
2560                         break;
2561                 default:
2562                         printk(KERN_ERR "%s: unsupported QoS action code %d\n",
2563                                dev->name,
2564                                mgmt->u.action.u.wme_action.action_code);
2565                         break;
2566                 }
2567                 break;
2568
2569         case WLAN_CATEGORY_DLS:
2570                 if (len < 24 + 16) {
2571                         printk(KERN_DEBUG "%s: too short (%zd) DLS category "
2572                                "frame received from " MAC_FMT " - ignored\n",
2573                                dev->name, len, MAC_ARG(mgmt->sa));
2574                         return;
2575                 }
2576                 switch (mgmt->u.action.u.dls_req.action_code) {
2577                 case WLAN_ACTION_DLS_REQ:
2578                         sta_process_dls_req(dev, ifsta, mgmt, len);
2579                         break;
2580                 case WLAN_ACTION_DLS_RESP:
2581                         sta_process_dls_resp(dev, ifsta, mgmt, len);
2582                         break;
2583                 case WLAN_ACTION_DLS_TEARDOWN:
2584                         sta_process_dls_teardown(dev, ifsta, mgmt, len);
2585                         break;
2586                 default:
2587                         printk(KERN_ERR "%s: unsupported DLS action code %d\n",
2588                                dev->name, mgmt->u.action.u.dls_req.action_code);
2589                         break;
2590                 }
2591                 break;
2592
2593         case WLAN_CATEGORY_BACK:
2594                 switch (mgmt->u.action.u.addba_req.action_code) {
2595                 case WLAN_ACTION_ADDBA_REQ:
2596                         if (len < (IEEE80211_MIN_ACTION_SIZE +
2597                                    sizeof(mgmt->u.action.u.addba_req)))
2598                                 break;
2599                         if (!local->ops->handle_ba_action ||
2600                             (local->ops->handle_ba_action(local_to_hw(local),
2601                                                       mgmt)))
2602                                 ieee80211_send_addba_resp(dev, mgmt, len,
2603                                                 WLAN_STATUS_REQUEST_DECLINED);
2604                         else
2605                                 ieee80211_send_addba_resp(dev, mgmt, len,
2606                                                         WLAN_STATUS_SUCCESS);
2607                         break;
2608                 case WLAN_ACTION_ADDBA_RESP:
2609                         if (len < (IEEE80211_MIN_ACTION_SIZE +
2610                                    sizeof(mgmt->u.action.u.addba_resp)))
2611                                 break;
2612                         if (!local->ops->handle_ba_action)
2613                                 break;
2614                         local->ops->handle_ba_action(local_to_hw(local), mgmt);
2615                         break;
2616                 case WLAN_ACTION_DELBA:
2617                         if (len < (IEEE80211_MIN_ACTION_SIZE +
2618                                    sizeof(mgmt->u.action.u.delba)))
2619                                 break;
2620
2621                          if (!local->ops->handle_ba_action)
2622                                 break;
2623
2624                         local->ops->handle_ba_action(local_to_hw(local), mgmt);
2625                         break;
2626                 default:
2627                         break;
2628                 }
2629                 break;
2630
2631         default:
2632                 break;
2633         }
2634 }
2635
2636 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
2637                            struct ieee80211_rx_status *rx_status)
2638 {
2639         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2640         struct ieee80211_sub_if_data *sdata;
2641         struct ieee80211_if_sta *ifsta;
2642         struct ieee80211_mgmt *mgmt;
2643         u16 fc;
2644
2645         if (skb->len < 24)
2646                 goto fail;
2647
2648         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2649         ifsta = &sdata->u.sta;
2650
2651         mgmt = (struct ieee80211_mgmt *) skb->data;
2652         fc = le16_to_cpu(mgmt->frame_control);
2653
2654         switch (fc & IEEE80211_FCTL_STYPE) {
2655         case IEEE80211_STYPE_PROBE_REQ:
2656         case IEEE80211_STYPE_PROBE_RESP:
2657         case IEEE80211_STYPE_BEACON:
2658                 memcpy(skb->cb, rx_status, sizeof(*rx_status));
2659         case IEEE80211_STYPE_AUTH:
2660         case IEEE80211_STYPE_ASSOC_RESP:
2661         case IEEE80211_STYPE_REASSOC_RESP:
2662         case IEEE80211_STYPE_DEAUTH:
2663         case IEEE80211_STYPE_DISASSOC:
2664         case IEEE80211_STYPE_ACTION:
2665                 skb_queue_tail(&ifsta->skb_queue, skb);
2666                 queue_work(local->hw.workqueue, &ifsta->work);
2667                 return;
2668         default:
2669                 printk(KERN_DEBUG "%s: received unknown management frame - "
2670                        "stype=%d\n", dev->name,
2671                        (fc & IEEE80211_FCTL_STYPE) >> 4);
2672                 break;
2673         }
2674
2675  fail:
2676         kfree_skb(skb);
2677 }
2678
2679
2680 static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
2681                                          struct sk_buff *skb)
2682 {
2683         struct ieee80211_rx_status *rx_status;
2684         struct ieee80211_sub_if_data *sdata;
2685         struct ieee80211_if_sta *ifsta;
2686         struct ieee80211_mgmt *mgmt;
2687         u16 fc;
2688
2689         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2690         ifsta = &sdata->u.sta;
2691
2692         rx_status = (struct ieee80211_rx_status *) skb->cb;
2693         mgmt = (struct ieee80211_mgmt *) skb->data;
2694         fc = le16_to_cpu(mgmt->frame_control);
2695
2696         switch (fc & IEEE80211_FCTL_STYPE) {
2697         case IEEE80211_STYPE_PROBE_REQ:
2698                 ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
2699                                             rx_status);
2700                 break;
2701         case IEEE80211_STYPE_PROBE_RESP:
2702                 ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
2703                 break;
2704         case IEEE80211_STYPE_BEACON:
2705                 ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
2706                 break;
2707         case IEEE80211_STYPE_AUTH:
2708                 ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
2709                 break;
2710         case IEEE80211_STYPE_ASSOC_RESP:
2711                 ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 0);
2712                 break;
2713         case IEEE80211_STYPE_REASSOC_RESP:
2714                 ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 1);
2715                 break;
2716         case IEEE80211_STYPE_DEAUTH:
2717                 ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
2718                 break;
2719         case IEEE80211_STYPE_DISASSOC:
2720                 ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
2721                 break;
2722         case IEEE80211_STYPE_ACTION:
2723                 ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len);
2724                 break;
2725         }
2726
2727         kfree_skb(skb);
2728 }
2729
2730
2731 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
2732                            struct ieee80211_rx_status *rx_status)
2733 {
2734         struct ieee80211_mgmt *mgmt;
2735         u16 fc;
2736
2737         if (skb->len < 24) {
2738                 dev_kfree_skb(skb);
2739                 return;
2740         }
2741
2742         mgmt = (struct ieee80211_mgmt *) skb->data;
2743         fc = le16_to_cpu(mgmt->frame_control);
2744
2745         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2746                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
2747                         ieee80211_rx_mgmt_probe_resp(dev, mgmt,
2748                                                      skb->len, rx_status);
2749                 } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
2750                         ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
2751                                                  rx_status);
2752                 }
2753         }
2754
2755         dev_kfree_skb(skb);
2756 }
2757
2758
2759 static int ieee80211_sta_active_ibss(struct net_device *dev)
2760 {
2761         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2762         int active = 0;
2763         struct sta_info *sta;
2764
2765         spin_lock_bh(&local->sta_lock);
2766         list_for_each_entry(sta, &local->sta_list, list) {
2767                 if (sta->dev == dev &&
2768                     time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
2769                                jiffies)) {
2770                         active++;
2771                         break;
2772                 }
2773         }
2774         spin_unlock_bh(&local->sta_lock);
2775
2776         return active;
2777 }
2778
2779
2780 static void ieee80211_sta_expire(struct net_device *dev)
2781 {
2782         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2783         struct sta_info *sta, *tmp;
2784
2785         spin_lock_bh(&local->sta_lock);
2786         list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
2787                 if (time_after(jiffies, sta->last_rx +
2788                                IEEE80211_IBSS_INACTIVITY_LIMIT)) {
2789                         printk(KERN_DEBUG "%s: expiring inactive STA " MAC_FMT
2790                                "\n", dev->name, MAC_ARG(sta->addr));
2791                         sta_info_free(sta, 1);
2792                 }
2793         spin_unlock_bh(&local->sta_lock);
2794 }
2795
2796
2797 static void ieee80211_sta_merge_ibss(struct net_device *dev,
2798                                      struct ieee80211_if_sta *ifsta)
2799 {
2800         mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
2801
2802         ieee80211_sta_expire(dev);
2803         if (ieee80211_sta_active_ibss(dev))
2804                 return;
2805
2806         printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
2807                "IBSS networks with same SSID (merge)\n", dev->name);
2808         ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
2809 }
2810
2811
2812 void ieee80211_sta_timer(unsigned long data)
2813 {
2814         struct ieee80211_sub_if_data *sdata =
2815                 (struct ieee80211_sub_if_data *) data;
2816         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
2817         struct ieee80211_local *local = wdev_priv(&sdata->wdev);
2818
2819         set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
2820         queue_work(local->hw.workqueue, &ifsta->work);
2821 }
2822
2823
2824 void ieee80211_sta_work(struct work_struct *work)
2825 {
2826         struct ieee80211_sub_if_data *sdata =
2827                 container_of(work, struct ieee80211_sub_if_data, u.sta.work);
2828         struct net_device *dev = sdata->dev;
2829         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2830         struct ieee80211_if_sta *ifsta;
2831         struct sk_buff *skb;
2832
2833         if (!netif_running(dev))
2834                 return;
2835
2836         if (local->sta_scanning)
2837                 return;
2838
2839         if (sdata->type != IEEE80211_IF_TYPE_STA &&
2840             sdata->type != IEEE80211_IF_TYPE_IBSS) {
2841                 printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
2842                        "(type=%d)\n", dev->name, sdata->type);
2843                 return;
2844         }
2845         ifsta = &sdata->u.sta;
2846
2847         while ((skb = skb_dequeue(&ifsta->skb_queue)))
2848                 ieee80211_sta_rx_queued_mgmt(dev, skb);
2849
2850         if (ifsta->state != IEEE80211_AUTHENTICATE &&
2851             ifsta->state != IEEE80211_ASSOCIATE &&
2852             test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
2853                 ieee80211_sta_start_scan(dev, NULL, 0);
2854                 return;
2855         }
2856
2857         if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
2858                 if (ieee80211_sta_config_auth(dev, ifsta))
2859                         return;
2860                 clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
2861         } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
2862                 return;
2863
2864         switch (ifsta->state) {
2865         case IEEE80211_DISABLED:
2866                 break;
2867         case IEEE80211_AUTHENTICATE:
2868                 ieee80211_authenticate(dev, ifsta);
2869                 break;
2870         case IEEE80211_ASSOCIATE:
2871                 ieee80211_associate(dev, ifsta);
2872                 break;
2873         case IEEE80211_ASSOCIATED:
2874                 ieee80211_associated(dev, ifsta);
2875                 break;
2876         case IEEE80211_IBSS_SEARCH:
2877                 ieee80211_sta_find_ibss(dev, ifsta);
2878                 break;
2879         case IEEE80211_IBSS_JOINED:
2880                 ieee80211_sta_merge_ibss(dev, ifsta);
2881                 break;
2882         default:
2883                 printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
2884                        ifsta->state);
2885                 break;
2886         }
2887
2888         if (ieee80211_privacy_mismatch(dev, ifsta)) {
2889                 printk(KERN_DEBUG "%s: privacy configuration mismatch and "
2890                        "mixed-cell disabled - disassociate\n", dev->name);
2891
2892                 ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
2893                 ieee80211_set_disassoc(dev, ifsta, 0);
2894         }
2895 }
2896
2897
2898 void ieee80211_admit_refresh(unsigned long ptr)
2899 {
2900         struct net_device *dev;
2901         struct ieee80211_sub_if_data *sdata;
2902         struct ieee80211_if_sta *ifsta;
2903         int i, j, find = 0;
2904
2905         dev = (struct net_device *) ptr;
2906         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2907         ifsta = &sdata->u.sta;
2908
2909         for (i = 0; i < STA_TSID_NUM; i++) {
2910                 for (j = 0; j < STA_TSDIR_NUM; j++) {
2911                         if ((ifsta->ts_data[i][j].status != TS_STATUS_ACTIVE) &&
2912                             (ifsta->ts_data[i][j].status != TS_STATUS_THROTTLING))
2913                                 continue;
2914                         find = 1;
2915
2916                         ifsta->ts_data[i][j].used_time_usec -=
2917                                 ifsta->ts_data[i][j].admitted_time_usec;
2918                         if ((s32)(ifsta->ts_data[i][j].used_time_usec) < 0)
2919                                 ifsta->ts_data[i][j].used_time_usec = 0;
2920
2921                         ifsta->ts_data[i][j].status =
2922                                 (ifsta->ts_data[i][j].used_time_usec >=
2923                                  ifsta->ts_data[i][j].admitted_time_usec) ?
2924                                 TS_STATUS_THROTTLING :
2925                                 TS_STATUS_ACTIVE;
2926                 }
2927         }
2928
2929         if (find)
2930                 mod_timer(&ifsta->admit_timer, jiffies +
2931                           ifsta->dot11EDCAAveragingPeriod * HZ);
2932 }
2933
2934
2935 static void ieee80211_sta_reset_auth(struct net_device *dev,
2936                                      struct ieee80211_if_sta *ifsta)
2937 {
2938         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2939
2940         if (local->ops->reset_tsf) {
2941                 /* Reset own TSF to allow time synchronization work. */
2942                 local->ops->reset_tsf(local_to_hw(local));
2943         }
2944
2945         ifsta->wmm_last_param_set = -1; /* allow any WMM update */
2946
2947
2948         if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
2949                 ifsta->auth_alg = WLAN_AUTH_OPEN;
2950         else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
2951                 ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
2952         else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
2953                 ifsta->auth_alg = WLAN_AUTH_LEAP;
2954         else
2955                 ifsta->auth_alg = WLAN_AUTH_OPEN;
2956         printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
2957                ifsta->auth_alg);
2958         ifsta->auth_transaction = -1;
2959         ifsta->associated = ifsta->auth_tries = ifsta->assoc_tries = 0;
2960         netif_carrier_off(dev);
2961 }
2962
2963
2964 void ieee80211_sta_req_auth(struct net_device *dev,
2965                             struct ieee80211_if_sta *ifsta)
2966 {
2967         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2968         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2969
2970         if (sdata->type != IEEE80211_IF_TYPE_STA)
2971                 return;
2972
2973         if ((ifsta->bssid_set || ifsta->auto_bssid_sel) &&
2974             (ifsta->ssid_set || ifsta->auto_ssid_sel)) {
2975                 set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
2976                 queue_work(local->hw.workqueue, &ifsta->work);
2977         }
2978 }
2979
2980 static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
2981                                     const char *ssid, int ssid_len)
2982 {
2983         int tmp, hidden_ssid;
2984
2985         if (!memcmp(ifsta->ssid, ssid, ssid_len))
2986                 return 1;
2987
2988         if (ifsta->auto_bssid_sel)
2989                 return 0;
2990
2991         hidden_ssid = 1;
2992         tmp = ssid_len;
2993         while (tmp--) {
2994                 if (ssid[tmp] != '\0') {
2995                         hidden_ssid = 0;
2996                         break;
2997                 }
2998         }
2999
3000         if (hidden_ssid && ifsta->ssid_len == ssid_len)
3001                 return 1;
3002
3003         if (ssid_len == 1 && ssid[0] == ' ')
3004                 return 1;
3005
3006         return 0;
3007 }
3008
3009 static int ieee80211_sta_config_auth(struct net_device *dev,
3010                                      struct ieee80211_if_sta *ifsta)
3011 {
3012         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3013         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3014         struct ieee80211_sta_bss *bss, *selected = NULL;
3015         int top_rssi = 0, freq;
3016
3017         rtnl_lock();
3018
3019         if (!ifsta->auto_channel_sel && !ifsta->auto_bssid_sel &&
3020             !ifsta->auto_ssid_sel) {
3021                 ifsta->state = IEEE80211_AUTHENTICATE;
3022                 rtnl_unlock();
3023                 ieee80211_sta_reset_auth(dev, ifsta);
3024                 return 0;
3025         }
3026
3027         spin_lock_bh(&local->sta_bss_lock);
3028         freq = local->oper_channel->freq;
3029         list_for_each_entry(bss, &local->sta_bss_list, list) {
3030                 if (!(bss->capability & WLAN_CAPABILITY_ESS))
3031                         continue;
3032
3033                 if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
3034                     !!sdata->default_key)
3035                         continue;
3036
3037                 if (!ifsta->auto_channel_sel && bss->freq != freq)
3038                         continue;
3039
3040                 if (!ifsta->auto_bssid_sel &&
3041                     memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
3042                         continue;
3043
3044                 if (!ifsta->auto_ssid_sel &&
3045                     !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
3046                         continue;
3047
3048                 if (!selected || top_rssi < bss->rssi) {
3049                         selected = bss;
3050                         top_rssi = bss->rssi;
3051                 }
3052         }
3053         if (selected)
3054                 atomic_inc(&selected->users);
3055         spin_unlock_bh(&local->sta_bss_lock);
3056
3057         if (selected) {
3058                 ieee80211_set_channel(local, -1, selected->freq);
3059                 if (!ifsta->ssid_set)
3060                         ieee80211_sta_set_ssid(dev, selected->ssid,
3061                                                selected->ssid_len);
3062                 ieee80211_sta_set_bssid(dev, selected->bssid);
3063                 ieee80211_rx_bss_put(dev, selected);
3064                 ifsta->state = IEEE80211_AUTHENTICATE;
3065                 rtnl_unlock();
3066                 ieee80211_sta_reset_auth(dev, ifsta);
3067                 return 0;
3068         } else {
3069                 if (ifsta->state != IEEE80211_AUTHENTICATE) {
3070                         ieee80211_sta_start_scan(dev, NULL, 0);
3071                         ifsta->state = IEEE80211_AUTHENTICATE;
3072                         set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
3073                 } else
3074                         ifsta->state = IEEE80211_DISABLED;
3075         }
3076         rtnl_unlock();
3077         return -1;
3078 }
3079
3080 static int ieee80211_sta_join_ibss(struct net_device *dev,
3081                                    struct ieee80211_if_sta *ifsta,
3082                                    struct ieee80211_sta_bss *bss)
3083 {
3084         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3085         int res, rates, i, j;
3086         struct sk_buff *skb;
3087         struct ieee80211_mgmt *mgmt;
3088         struct ieee80211_tx_control control;
3089         struct ieee80211_rate *rate;
3090         struct ieee80211_hw_mode *mode;
3091         struct rate_control_extra extra;
3092         u8 *pos;
3093         struct ieee80211_sub_if_data *sdata;
3094
3095         /* Remove possible STA entries from other IBSS networks. */
3096         sta_info_flush(local, NULL);
3097
3098         if (local->ops->reset_tsf) {
3099                 /* Reset own TSF to allow time synchronization work. */
3100                 local->ops->reset_tsf(local_to_hw(local));
3101         }
3102         memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
3103         res = ieee80211_if_config(dev);
3104         if (res)
3105                 return res;
3106
3107         local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
3108
3109         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3110         sdata->drop_unencrypted = bss->capability &
3111                 WLAN_CAPABILITY_PRIVACY ? 1 : 0;
3112
3113         res = ieee80211_set_channel(local, -1, bss->freq);
3114
3115         if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
3116                 printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
3117                        "(%d MHz)\n", dev->name, local->hw.conf.channel,
3118                        local->hw.conf.freq);
3119                 return -1;
3120         }
3121
3122         /* Set beacon template based on scan results */
3123         skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
3124         do {
3125                 if (!skb)
3126                         break;
3127
3128                 skb_reserve(skb, local->hw.extra_tx_headroom);
3129
3130                 mgmt = (struct ieee80211_mgmt *)
3131                         skb_put(skb, 24 + sizeof(mgmt->u.beacon));
3132                 memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
3133                 mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
3134                                                    IEEE80211_STYPE_BEACON);
3135                 memset(mgmt->da, 0xff, ETH_ALEN);
3136                 memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
3137                 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
3138                 mgmt->u.beacon.beacon_int =
3139                         cpu_to_le16(local->hw.conf.beacon_int);
3140                 mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
3141
3142                 pos = skb_put(skb, 2 + ifsta->ssid_len);
3143                 *pos++ = WLAN_EID_SSID;
3144                 *pos++ = ifsta->ssid_len;
3145                 memcpy(pos, ifsta->ssid, ifsta->ssid_len);
3146
3147                 rates = bss->supp_rates_len;
3148                 if (rates > 8)
3149                         rates = 8;
3150                 pos = skb_put(skb, 2 + rates);
3151                 *pos++ = WLAN_EID_SUPP_RATES;
3152                 *pos++ = rates;
3153                 memcpy(pos, bss->supp_rates, rates);
3154
3155                 pos = skb_put(skb, 2 + 1);
3156                 *pos++ = WLAN_EID_DS_PARAMS;
3157                 *pos++ = 1;
3158                 *pos++ = bss->channel;
3159
3160                 pos = skb_put(skb, 2 + 2);
3161                 *pos++ = WLAN_EID_IBSS_PARAMS;
3162                 *pos++ = 2;
3163                 /* FIX: set ATIM window based on scan results */
3164                 *pos++ = 0;
3165                 *pos++ = 0;
3166
3167                 if (bss->supp_rates_len > 8) {
3168                         rates = bss->supp_rates_len - 8;
3169                         pos = skb_put(skb, 2 + rates);
3170                         *pos++ = WLAN_EID_EXT_SUPP_RATES;
3171                         *pos++ = rates;
3172                         memcpy(pos, &bss->supp_rates[8], rates);
3173                 }
3174
3175                 memset(&control, 0, sizeof(control));
3176                 memset(&extra, 0, sizeof(extra));
3177                 extra.mode = local->oper_hw_mode;
3178                 rate = rate_control_get_rate(local, dev, skb, &extra);
3179                 if (!rate) {
3180                         printk(KERN_DEBUG "%s: Failed to determine TX rate "
3181                                "for IBSS beacon\n", dev->name);
3182                         break;
3183                 }
3184                 control.tx_rate = (local->short_preamble &&
3185                                    (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
3186                         rate->val2 : rate->val;
3187                 control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
3188                 control.power_level = local->hw.conf.power_level;
3189                 control.flags |= IEEE80211_TXCTL_NO_ACK;
3190                 control.retry_limit = 1;
3191
3192                 ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
3193                 if (ifsta->probe_resp) {
3194                         mgmt = (struct ieee80211_mgmt *)
3195                                 ifsta->probe_resp->data;
3196                         mgmt->frame_control =
3197                                 IEEE80211_FC(IEEE80211_FTYPE_MGMT,
3198                                              IEEE80211_STYPE_PROBE_RESP);
3199                 } else {
3200                         printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
3201                                "template for IBSS\n", dev->name);
3202                 }
3203
3204                 if (local->ops->beacon_update &&
3205                     local->ops->beacon_update(local_to_hw(local),
3206                                              skb, &control) == 0) {
3207                         printk(KERN_DEBUG "%s: Configured IBSS beacon "
3208                                "template based on scan results\n", dev->name);
3209                         skb = NULL;
3210                 }
3211
3212                 rates = 0;
3213                 mode = local->oper_hw_mode;
3214                 for (i = 0; i < bss->supp_rates_len; i++) {
3215                         int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
3216                         if (mode->mode == MODE_ATHEROS_TURBO)
3217                                 bitrate *= 2;
3218                         for (j = 0; j < mode->num_rates; j++)
3219                                 if (mode->rates[j].rate == bitrate)
3220                                         rates |= BIT(j);
3221                 }
3222                 ifsta->supp_rates_bits = rates;
3223         } while (0);
3224
3225         if (skb) {
3226                 printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
3227                        "template\n", dev->name);
3228                 dev_kfree_skb(skb);
3229         }
3230
3231         ifsta->state = IEEE80211_IBSS_JOINED;
3232         mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
3233
3234         ieee80211_rx_bss_put(dev, bss);
3235
3236         return res;
3237 }
3238
3239
3240 static int ieee80211_sta_create_ibss(struct net_device *dev,
3241                                      struct ieee80211_if_sta *ifsta)
3242 {
3243         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3244         struct ieee80211_sta_bss *bss;
3245         struct ieee80211_sub_if_data *sdata;
3246         struct ieee80211_hw_mode *mode;
3247         u8 bssid[ETH_ALEN], *pos;
3248         int i;
3249
3250 #if 0
3251         /* Easier testing, use fixed BSSID. */
3252         memset(bssid, 0xfe, ETH_ALEN);
3253 #else
3254         /* Generate random, not broadcast, locally administered BSSID. Mix in
3255          * own MAC address to make sure that devices that do not have proper
3256          * random number generator get different BSSID. */
3257         get_random_bytes(bssid, ETH_ALEN);
3258         for (i = 0; i < ETH_ALEN; i++)
3259                 bssid[i] ^= dev->dev_addr[i];
3260         bssid[0] &= ~0x01;
3261         bssid[0] |= 0x02;
3262 #endif
3263
3264         printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID " MAC_FMT "\n",
3265                dev->name, MAC_ARG(bssid));
3266
3267         bss = ieee80211_rx_bss_add(dev, bssid);
3268         if (!bss)
3269                 return -ENOMEM;
3270
3271         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3272         mode = local->oper_hw_mode;
3273
3274         if (local->hw.conf.beacon_int == 0)
3275                 local->hw.conf.beacon_int = 100;
3276         bss->beacon_int = local->hw.conf.beacon_int;
3277         bss->hw_mode = local->hw.conf.phymode;
3278         bss->channel = local->hw.conf.channel;
3279         bss->freq = local->hw.conf.freq;
3280         bss->last_update = jiffies;
3281         bss->capability = WLAN_CAPABILITY_IBSS;
3282         if (sdata->default_key) {
3283                 bss->capability |= WLAN_CAPABILITY_PRIVACY;
3284         } else
3285                 sdata->drop_unencrypted = 0;
3286         bss->supp_rates_len = mode->num_rates;
3287         pos = bss->supp_rates;
3288         for (i = 0; i < mode->num_rates; i++) {
3289                 int rate = mode->rates[i].rate;
3290                 if (mode->mode == MODE_ATHEROS_TURBO)
3291                         rate /= 2;
3292                 *pos++ = (u8) (rate / 5);
3293         }
3294
3295         return ieee80211_sta_join_ibss(dev, ifsta, bss);
3296 }
3297
3298
3299 static int ieee80211_sta_find_ibss(struct net_device *dev,
3300                                    struct ieee80211_if_sta *ifsta)
3301 {
3302         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3303         struct ieee80211_sta_bss *bss;
3304         int found = 0;
3305         u8 bssid[ETH_ALEN];
3306         int active_ibss;
3307
3308         if (ifsta->ssid_len == 0)
3309                 return -EINVAL;
3310
3311         active_ibss = ieee80211_sta_active_ibss(dev);
3312 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3313         printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
3314                dev->name, active_ibss);
3315 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3316         spin_lock_bh(&local->sta_bss_lock);
3317         list_for_each_entry(bss, &local->sta_bss_list, list) {
3318                 if (ifsta->ssid_len != bss->ssid_len ||
3319                     memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
3320                     || !(bss->capability & WLAN_CAPABILITY_IBSS))
3321                         continue;
3322 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3323                 printk(KERN_DEBUG "   bssid=" MAC_FMT " found\n",
3324                        MAC_ARG(bss->bssid));
3325 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3326                 memcpy(bssid, bss->bssid, ETH_ALEN);
3327                 found = 1;
3328                 if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
3329                         break;
3330         }
3331         spin_unlock_bh(&local->sta_bss_lock);
3332
3333 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3334         printk(KERN_DEBUG "   sta_find_ibss: selected " MAC_FMT " current "
3335                MAC_FMT "\n", MAC_ARG(bssid), MAC_ARG(ifsta->bssid));
3336 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3337         if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
3338             (bss = ieee80211_rx_bss_get(dev, bssid))) {
3339                 printk(KERN_DEBUG "%s: Selected IBSS BSSID " MAC_FMT
3340                        " based on configured SSID\n",
3341                        dev->name, MAC_ARG(bssid));
3342                 return ieee80211_sta_join_ibss(dev, ifsta, bss);
3343         }
3344 #ifdef CONFIG_MAC80211_IBSS_DEBUG
3345         printk(KERN_DEBUG "   did not try to join ibss\n");
3346 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
3347
3348         /* Selected IBSS not found in current scan results - try to scan */
3349         if (ifsta->state == IEEE80211_IBSS_JOINED &&
3350             !ieee80211_sta_active_ibss(dev)) {
3351                 mod_timer(&ifsta->timer, jiffies +
3352                                       IEEE80211_IBSS_MERGE_INTERVAL);
3353         } else if (time_after(jiffies, local->last_scan_completed +
3354                               IEEE80211_SCAN_INTERVAL)) {
3355                 printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
3356                        "join\n", dev->name);
3357                 return ieee80211_sta_req_scan(dev, ifsta->ssid,
3358                                               ifsta->ssid_len);
3359         } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
3360                 int interval = IEEE80211_SCAN_INTERVAL;
3361
3362                 if (time_after(jiffies, ifsta->ibss_join_req +
3363                                IEEE80211_IBSS_JOIN_TIMEOUT)) {
3364                         if (ifsta->create_ibss &&
3365                             local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
3366                                 return ieee80211_sta_create_ibss(dev, ifsta);
3367                         if (ifsta->create_ibss) {
3368                                 printk(KERN_DEBUG "%s: IBSS not allowed on the"
3369                                        " configured channel %d (%d MHz)\n",
3370                                        dev->name, local->hw.conf.channel,
3371                                        local->hw.conf.freq);
3372                         }
3373
3374                         /* No IBSS found - decrease scan interval and continue
3375                          * scanning. */
3376                         interval = IEEE80211_SCAN_INTERVAL_SLOW;
3377                 }
3378
3379                 ifsta->state = IEEE80211_IBSS_SEARCH;
3380                 mod_timer(&ifsta->timer, jiffies + interval);
3381                 return 0;
3382         }
3383
3384         return 0;
3385 }
3386
3387
3388 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
3389 {
3390         struct ieee80211_sub_if_data *sdata;
3391         struct ieee80211_if_sta *ifsta;
3392         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3393
3394         if (len > IEEE80211_MAX_SSID_LEN)
3395                 return -EINVAL;
3396
3397         /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
3398          * not defined. */
3399         if (local->ops->conf_tx) {
3400                 struct ieee80211_tx_queue_params qparam;
3401                 int i;
3402
3403                 memset(&qparam, 0, sizeof(qparam));
3404                 /* TODO: are these ok defaults for all hw_modes? */
3405                 qparam.aifs = 2;
3406                 qparam.cw_min =
3407                         local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
3408                 qparam.cw_max = 1023;
3409                 qparam.burst_time = 0;
3410                 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
3411                 {
3412                         local->ops->conf_tx(local_to_hw(local),
3413                                            i + IEEE80211_TX_QUEUE_DATA0,
3414                                            &qparam);
3415                 }
3416                 /* IBSS uses different parameters for Beacon sending */
3417                 qparam.cw_min++;
3418                 qparam.cw_min *= 2;
3419                 qparam.cw_min--;
3420                 local->ops->conf_tx(local_to_hw(local),
3421                                    IEEE80211_TX_QUEUE_BEACON, &qparam);
3422         }
3423
3424         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3425         ifsta = &sdata->u.sta;
3426
3427         if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
3428                 ifsta->prev_bssid_set = 0;
3429         memcpy(ifsta->ssid, ssid, len);
3430         memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
3431         ifsta->ssid_len = len;
3432
3433         ifsta->ssid_set = len ? 1 : 0;
3434         if (sdata->type == IEEE80211_IF_TYPE_IBSS && !ifsta->bssid_set) {
3435                 ifsta->ibss_join_req = jiffies;
3436                 ifsta->state = IEEE80211_IBSS_SEARCH;
3437                 return ieee80211_sta_find_ibss(dev, ifsta);
3438         }
3439         return 0;
3440 }
3441
3442
3443 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
3444 {
3445         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3446         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3447         memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
3448         *len = ifsta->ssid_len;
3449         return 0;
3450 }
3451
3452
3453 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
3454 {
3455         struct ieee80211_sub_if_data *sdata;
3456         struct ieee80211_if_sta *ifsta;
3457         int res;
3458
3459         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3460         ifsta = &sdata->u.sta;
3461
3462         if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
3463                 memcpy(ifsta->bssid, bssid, ETH_ALEN);
3464                 res = ieee80211_if_config(dev);
3465                 if (res) {
3466                         printk(KERN_DEBUG "%s: Failed to config new BSSID to "
3467                                "the low-level driver\n", dev->name);
3468                         return res;
3469                 }
3470         }
3471
3472         if (!is_valid_ether_addr(bssid))
3473                 ifsta->bssid_set = 0;
3474         else
3475                 ifsta->bssid_set = 1;
3476         return 0;
3477 }
3478
3479
3480 static void ieee80211_send_nullfunc(struct ieee80211_local *local,
3481                                     struct ieee80211_sub_if_data *sdata,
3482                                     int powersave)
3483 {
3484         struct sk_buff *skb;
3485         struct ieee80211_hdr *nullfunc;
3486         u16 fc;
3487
3488         skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
3489         if (!skb) {
3490                 printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
3491                        "frame\n", sdata->dev->name);
3492                 return;
3493         }
3494         skb_reserve(skb, local->hw.extra_tx_headroom);
3495
3496         nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
3497         memset(nullfunc, 0, 24);
3498         fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
3499              IEEE80211_FCTL_TODS;
3500         if (powersave)
3501                 fc |= IEEE80211_FCTL_PM;
3502         nullfunc->frame_control = cpu_to_le16(fc);
3503         memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
3504         memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
3505         memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
3506
3507         ieee80211_sta_tx(sdata->dev, skb, 0);
3508 }
3509
3510
3511 void ieee80211_scan_completed(struct ieee80211_hw *hw)
3512 {
3513         struct ieee80211_local *local = hw_to_local(hw);
3514         struct net_device *dev = local->scan_dev;
3515         struct ieee80211_sub_if_data *sdata;
3516         union iwreq_data wrqu;
3517
3518         local->last_scan_completed = jiffies;
3519         wmb();
3520         local->sta_scanning = 0;
3521
3522         if (ieee80211_hw_config(local))
3523                 printk(KERN_DEBUG "%s: failed to restore operational"
3524                        "channel after scan\n", dev->name);
3525
3526         if (!(local->hw.flags & IEEE80211_HW_NO_PROBE_FILTERING) &&
3527             ieee80211_if_config(dev))
3528                 printk(KERN_DEBUG "%s: failed to restore operational"
3529                        "BSSID after scan\n", dev->name);
3530
3531         memset(&wrqu, 0, sizeof(wrqu));
3532         wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
3533
3534         read_lock(&local->sub_if_lock);
3535         list_for_each_entry(sdata, &local->sub_if_list, list) {
3536
3537                 /* No need to wake the master device. */
3538                 if (sdata->dev == local->mdev)
3539                         continue;
3540
3541                 if (sdata->type == IEEE80211_IF_TYPE_STA) {
3542                         if (sdata->u.sta.associated)
3543                                 ieee80211_send_nullfunc(local, sdata, 0);
3544                         ieee80211_sta_timer((unsigned long)sdata);
3545                 }
3546
3547                 netif_wake_queue(sdata->dev);
3548         }
3549         read_unlock(&local->sub_if_lock);
3550
3551         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3552         if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
3553                 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3554                 if (!ifsta->bssid_set ||
3555                     (!ifsta->state == IEEE80211_IBSS_JOINED &&
3556                     !ieee80211_sta_active_ibss(dev)))
3557                         ieee80211_sta_find_ibss(dev, ifsta);
3558         }
3559 }
3560 EXPORT_SYMBOL(ieee80211_scan_completed);
3561
3562 void ieee80211_sta_scan_work(struct work_struct *work)
3563 {
3564         struct ieee80211_local *local =
3565                 container_of(work, struct ieee80211_local, scan_work.work);
3566         struct net_device *dev = local->scan_dev;
3567         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3568         struct ieee80211_hw_mode *mode;
3569         struct ieee80211_channel *chan;
3570         int skip;
3571         unsigned long next_delay = 0;
3572
3573         if (!local->sta_scanning)
3574                 return;
3575
3576         switch (local->scan_state) {
3577         case SCAN_SET_CHANNEL:
3578                 mode = local->scan_hw_mode;
3579                 if (local->scan_hw_mode->list.next == &local->modes_list &&
3580                     local->scan_channel_idx >= mode->num_channels) {
3581                         ieee80211_scan_completed(local_to_hw(local));
3582                         return;
3583                 }
3584                 skip = !(local->enabled_modes & (1 << mode->mode));
3585                 chan = &mode->channels[local->scan_channel_idx];
3586                 if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
3587                     (sdata->type == IEEE80211_IF_TYPE_IBSS &&
3588                      !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
3589                     (local->hw_modes & local->enabled_modes &
3590                      (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
3591                         skip = 1;
3592
3593                 if (!skip) {
3594 #if 0
3595                         printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
3596                                dev->name, chan->chan, chan->freq);
3597 #endif
3598
3599                         local->scan_channel = chan;
3600                         if (ieee80211_hw_config(local)) {
3601                                 printk(KERN_DEBUG "%s: failed to set channel "
3602                                        "%d (%d MHz) for scan\n", dev->name,
3603                                        chan->chan, chan->freq);
3604                                 skip = 1;
3605                         }
3606                 }
3607
3608                 local->scan_channel_idx++;
3609                 if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
3610                         if (local->scan_hw_mode->list.next != &local->modes_list) {
3611                                 local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
3612                                                                  struct ieee80211_hw_mode,
3613                                                                  list);
3614                                 local->scan_channel_idx = 0;
3615                         }
3616                 }
3617
3618                 if (skip)
3619                         break;
3620
3621                 next_delay = IEEE80211_PROBE_DELAY +
3622                              usecs_to_jiffies(local->hw.channel_change_time);
3623                 local->scan_state = SCAN_SEND_PROBE;
3624                 break;
3625         case SCAN_SEND_PROBE:
3626                 if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
3627                         ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
3628                                                  local->scan_ssid_len);
3629                         next_delay = IEEE80211_CHANNEL_TIME;
3630                 } else
3631                         next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
3632                 local->scan_state = SCAN_SET_CHANNEL;
3633                 break;
3634         }
3635
3636         if (local->sta_scanning)
3637                 queue_delayed_work(local->hw.workqueue, &local->scan_work,
3638                                    next_delay);
3639 }
3640
3641
3642 static int ieee80211_sta_start_scan(struct net_device *dev,
3643                                     u8 *ssid, size_t ssid_len)
3644 {
3645         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3646         struct ieee80211_sub_if_data *sdata;
3647
3648         if (ssid_len > IEEE80211_MAX_SSID_LEN)
3649                 return -EINVAL;
3650
3651         /* MLME-SCAN.request (page 118)  page 144 (11.1.3.1)
3652          * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
3653          * BSSID: MACAddress
3654          * SSID
3655          * ScanType: ACTIVE, PASSIVE
3656          * ProbeDelay: delay (in microseconds) to be used prior to transmitting
3657          *    a Probe frame during active scanning
3658          * ChannelList
3659          * MinChannelTime (>= ProbeDelay), in TU
3660          * MaxChannelTime: (>= MinChannelTime), in TU
3661          */
3662
3663          /* MLME-SCAN.confirm
3664           * BSSDescriptionSet
3665           * ResultCode: SUCCESS, INVALID_PARAMETERS
3666          */
3667
3668         if (local->sta_scanning) {
3669                 if (local->scan_dev == dev)
3670                         return 0;
3671                 return -EBUSY;
3672         }
3673
3674         if (local->ops->hw_scan) {
3675                 int rc = local->ops->hw_scan(local_to_hw(local),
3676                                             ssid, ssid_len);
3677                 if (!rc) {
3678                         local->sta_scanning = 1;
3679                         local->scan_dev = dev;
3680                 }
3681                 return rc;
3682         }
3683
3684         local->sta_scanning = 1;
3685
3686         read_lock(&local->sub_if_lock);
3687         list_for_each_entry(sdata, &local->sub_if_list, list) {
3688
3689                 /* Don't stop the master interface, otherwise we can't transmit
3690                  * probes! */
3691                 if (sdata->dev == local->mdev)
3692                         continue;
3693
3694                 netif_stop_queue(sdata->dev);
3695                 if (sdata->type == IEEE80211_IF_TYPE_STA &&
3696                     sdata->u.sta.associated)
3697                         ieee80211_send_nullfunc(local, sdata, 1);
3698         }
3699         read_unlock(&local->sub_if_lock);
3700
3701         if (ssid) {
3702                 local->scan_ssid_len = ssid_len;
3703                 memcpy(local->scan_ssid, ssid, ssid_len);
3704         } else
3705                 local->scan_ssid_len = 0;
3706         local->scan_state = SCAN_SET_CHANNEL;
3707         local->scan_hw_mode = list_entry(local->modes_list.next,
3708                                          struct ieee80211_hw_mode,
3709                                          list);
3710         local->scan_channel_idx = 0;
3711         local->scan_dev = dev;
3712
3713         if (!(local->hw.flags & IEEE80211_HW_NO_PROBE_FILTERING) &&
3714             ieee80211_if_config(dev))
3715                 printk(KERN_DEBUG "%s: failed to set BSSID for scan\n",
3716                        dev->name);
3717
3718         /* TODO: start scan as soon as all nullfunc frames are ACKed */
3719         queue_delayed_work(local->hw.workqueue, &local->scan_work,
3720                            IEEE80211_CHANNEL_TIME);
3721
3722         return 0;
3723 }
3724
3725
3726 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
3727 {
3728         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3729         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3730         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3731
3732         if (sdata->type != IEEE80211_IF_TYPE_STA)
3733                 return ieee80211_sta_start_scan(dev, ssid, ssid_len);
3734
3735         if (local->sta_scanning) {
3736                 if (local->scan_dev == dev)
3737                         return 0;
3738                 return -EBUSY;
3739         }
3740
3741         set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
3742         queue_work(local->hw.workqueue, &ifsta->work);
3743         return 0;
3744 }
3745
3746 static char *
3747 ieee80211_sta_scan_result(struct net_device *dev,
3748                           struct ieee80211_sta_bss *bss,
3749                           char *current_ev, char *end_buf)
3750 {
3751         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3752         struct iw_event iwe;
3753
3754         if (time_after(jiffies,
3755                        bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
3756                 return current_ev;
3757
3758         if (!(local->enabled_modes & (1 << bss->hw_mode)))
3759                 return current_ev;
3760
3761         if (local->scan_flags & IEEE80211_SCAN_WPA_ONLY &&
3762             !bss->wpa_ie && !bss->rsn_ie)
3763                 return current_ev;
3764
3765         if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID &&
3766             (local->scan_ssid_len != bss->ssid_len ||
3767              memcmp(local->scan_ssid, bss->ssid, bss->ssid_len) != 0))
3768                 return current_ev;
3769
3770         memset(&iwe, 0, sizeof(iwe));
3771         iwe.cmd = SIOCGIWAP;
3772         iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
3773         memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
3774         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
3775                                           IW_EV_ADDR_LEN);
3776
3777         memset(&iwe, 0, sizeof(iwe));
3778         iwe.cmd = SIOCGIWESSID;
3779         iwe.u.data.length = bss->ssid_len;
3780         iwe.u.data.flags = 1;
3781         current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
3782                                           bss->ssid);
3783
3784         if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
3785                 memset(&iwe, 0, sizeof(iwe));
3786                 iwe.cmd = SIOCGIWMODE;
3787                 if (bss->capability & WLAN_CAPABILITY_ESS)
3788                         iwe.u.mode = IW_MODE_MASTER;
3789                 else
3790                         iwe.u.mode = IW_MODE_ADHOC;
3791                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
3792                                                   IW_EV_UINT_LEN);
3793         }
3794
3795         memset(&iwe, 0, sizeof(iwe));
3796         iwe.cmd = SIOCGIWFREQ;
3797         iwe.u.freq.m = bss->channel;
3798         iwe.u.freq.e = 0;
3799         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
3800                                           IW_EV_FREQ_LEN);
3801         iwe.u.freq.m = bss->freq * 100000;
3802         iwe.u.freq.e = 1;
3803         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
3804                                           IW_EV_FREQ_LEN);
3805
3806         memset(&iwe, 0, sizeof(iwe));
3807         iwe.cmd = IWEVQUAL;
3808         iwe.u.qual.qual = bss->signal;
3809         iwe.u.qual.level = bss->rssi;
3810         iwe.u.qual.noise = bss->noise;
3811         iwe.u.qual.updated = local->wstats_flags;
3812         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
3813                                           IW_EV_QUAL_LEN);
3814
3815         memset(&iwe, 0, sizeof(iwe));
3816         iwe.cmd = SIOCGIWENCODE;
3817         if (bss->capability & WLAN_CAPABILITY_PRIVACY)
3818                 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
3819         else
3820                 iwe.u.data.flags = IW_ENCODE_DISABLED;
3821         iwe.u.data.length = 0;
3822         current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
3823
3824         if (bss && bss->wpa_ie) {
3825                 memset(&iwe, 0, sizeof(iwe));
3826                 iwe.cmd = IWEVGENIE;
3827                 iwe.u.data.length = bss->wpa_ie_len;
3828                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
3829                                                   bss->wpa_ie);
3830         }
3831
3832         if (bss && bss->rsn_ie) {
3833                 memset(&iwe, 0, sizeof(iwe));
3834                 iwe.cmd = IWEVGENIE;
3835                 iwe.u.data.length = bss->rsn_ie_len;
3836                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
3837                                                   bss->rsn_ie);
3838         }
3839
3840         if (bss && bss->supp_rates_len > 0) {
3841                 /* display all supported rates in readable format */
3842                 char *p = current_ev + IW_EV_LCP_LEN;
3843                 int i;
3844
3845                 memset(&iwe, 0, sizeof(iwe));
3846                 iwe.cmd = SIOCGIWRATE;
3847                 /* Those two flags are ignored... */
3848                 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
3849
3850                 for (i = 0; i < bss->supp_rates_len; i++) {
3851                         iwe.u.bitrate.value = ((bss->supp_rates[i] &
3852                                                         0x7f) * 500000);
3853                         p = iwe_stream_add_value(current_ev, p,
3854                                         end_buf, &iwe, IW_EV_PARAM_LEN);
3855                 }
3856                 current_ev = p;
3857         }
3858
3859         if (bss) {
3860                 char *buf;
3861                 buf = kmalloc(30, GFP_ATOMIC);
3862                 if (buf) {
3863                         memset(&iwe, 0, sizeof(iwe));
3864                         iwe.cmd = IWEVCUSTOM;
3865                         sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
3866                         iwe.u.data.length = strlen(buf);
3867                         current_ev = iwe_stream_add_point(current_ev, end_buf,
3868                                                           &iwe, buf);
3869                         kfree(buf);
3870                 }
3871         }
3872
3873         do {
3874                 char *buf;
3875
3876                 if (!(local->scan_flags & IEEE80211_SCAN_EXTRA_INFO))
3877                         break;
3878
3879                 buf = kmalloc(100, GFP_ATOMIC);
3880                 if (!buf)
3881                         break;
3882
3883                 memset(&iwe, 0, sizeof(iwe));
3884                 iwe.cmd = IWEVCUSTOM;
3885                 sprintf(buf, "bcn_int=%d", bss->beacon_int);
3886                 iwe.u.data.length = strlen(buf);
3887                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
3888                                                   buf);
3889
3890                 memset(&iwe, 0, sizeof(iwe));
3891                 iwe.cmd = IWEVCUSTOM;
3892                 sprintf(buf, "capab=0x%04x", bss->capability);
3893                 iwe.u.data.length = strlen(buf);
3894                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
3895                                                   buf);
3896
3897                 kfree(buf);
3898                 break;
3899         } while (0);
3900
3901         return current_ev;
3902 }
3903
3904
3905 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
3906 {
3907         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3908         char *current_ev = buf;
3909         char *end_buf = buf + len;
3910         struct ieee80211_sta_bss *bss;
3911
3912         spin_lock_bh(&local->sta_bss_lock);
3913         list_for_each_entry(bss, &local->sta_bss_list, list) {
3914                 if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
3915                         spin_unlock_bh(&local->sta_bss_lock);
3916                         return -E2BIG;
3917                 }
3918                 current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
3919                                                        end_buf);
3920         }
3921         spin_unlock_bh(&local->sta_bss_lock);
3922         return current_ev - buf;
3923 }
3924
3925
3926 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
3927 {
3928         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3929         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3930         kfree(ifsta->extra_ie);
3931         if (len == 0) {
3932                 ifsta->extra_ie = NULL;
3933                 ifsta->extra_ie_len = 0;
3934                 return 0;
3935         }
3936         ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
3937         if (!ifsta->extra_ie) {
3938                 ifsta->extra_ie_len = 0;
3939                 return -ENOMEM;
3940         }
3941         memcpy(ifsta->extra_ie, ie, len);
3942         ifsta->extra_ie_len = len;
3943         return 0;
3944 }
3945
3946
3947 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
3948                                          struct sk_buff *skb, u8 *bssid,
3949                                          u8 *addr)
3950 {
3951         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3952         struct sta_info *sta;
3953         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3954
3955         /* TODO: Could consider removing the least recently used entry and
3956          * allow new one to be added. */
3957         if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
3958                 if (net_ratelimit()) {
3959                         printk(KERN_DEBUG "%s: No room for a new IBSS STA "
3960                                "entry " MAC_FMT "\n", dev->name, MAC_ARG(addr));
3961                 }
3962                 return NULL;
3963         }
3964
3965         printk(KERN_DEBUG "%s: Adding new IBSS station " MAC_FMT " (dev=%s)\n",
3966                local->mdev->name, MAC_ARG(addr), dev->name);
3967
3968         sta = sta_info_add(local, dev, addr, GFP_ATOMIC);
3969         if (!sta)
3970                 return NULL;
3971
3972         sta->supp_rates = sdata->u.sta.supp_rates_bits;
3973
3974         rate_control_rate_init(sta, local);
3975
3976         return sta; /* caller will call sta_info_put() */
3977 }
3978
3979
3980 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
3981 {
3982         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3983         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3984
3985         printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
3986                dev->name, reason);
3987
3988         if (sdata->type != IEEE80211_IF_TYPE_STA &&
3989             sdata->type != IEEE80211_IF_TYPE_IBSS)
3990                 return -EINVAL;
3991
3992         ieee80211_send_deauth(dev, ifsta, reason);
3993         ieee80211_set_disassoc(dev, ifsta, 1);
3994         return 0;
3995 }
3996
3997
3998 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
3999 {
4000         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4001         struct ieee80211_if_sta *ifsta = &sdata->u.sta;
4002
4003         printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
4004                dev->name, reason);
4005
4006         if (sdata->type != IEEE80211_IF_TYPE_STA)
4007                 return -EINVAL;
4008
4009         if (!ifsta->associated)
4010                 return -1;
4011
4012         ieee80211_send_disassoc(dev, ifsta, reason);
4013         ieee80211_set_disassoc(dev, ifsta, 0);
4014         return 0;
4015 }