drivers/net/wireless/intel/iwlwifi/mvm/d3.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018 - 2019 Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
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  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 - 2019 Intel Corporation
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  45  *    the documentation and/or other materials provided with the
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  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64
  65 #include <linux/etherdevice.h>
  66 #include <linux/ip.h>
  67 #include <linux/fs.h>
  68 #include <net/cfg80211.h>
  69 #include <net/ipv6.h>
  70 #include <net/tcp.h>
  71 #include <net/addrconf.h>
  72 #include "iwl-modparams.h"
  73 #include "fw-api.h"
  74 #include "mvm.h"
  75
  76 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
  77                             struct ieee80211_vif *vif,
  78                             struct cfg80211_gtk_rekey_data *data)
  79 {
  80         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
  81         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  82
  83         if (iwlwifi_mod_params.swcrypto)
  84                 return;
  85
  86         mutex_lock(&mvm->mutex);
  87
  88         memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
  89         memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
  90         mvmvif->rekey_data.replay_ctr =
  91                 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
  92         mvmvif->rekey_data.valid = true;
  93
  94         mutex_unlock(&mvm->mutex);
  95 }
  96
  97 #if IS_ENABLED(CONFIG_IPV6)
  98 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
  99                               struct ieee80211_vif *vif,
 100                               struct inet6_dev *idev)
 101 {
 102         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 103         struct inet6_ifaddr *ifa;
 104         int idx = 0;
 105
 106         memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
 107
 108         read_lock_bh(&idev->lock);
 109         list_for_each_entry(ifa, &idev->addr_list, if_list) {
 110                 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
 111                 if (ifa->flags & IFA_F_TENTATIVE)
 112                         __set_bit(idx, mvmvif->tentative_addrs);
 113                 idx++;
 114                 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
 115                         break;
 116         }
 117         read_unlock_bh(&idev->lock);
 118
 119         mvmvif->num_target_ipv6_addrs = idx;
 120 }
 121 #endif
 122
 123 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
 124                                      struct ieee80211_vif *vif, int idx)
 125 {
 126         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 127
 128         mvmvif->tx_key_idx = idx;
 129 }
 130
 131 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
 132 {
 133         int i;
 134
 135         for (i = 0; i < IWL_P1K_SIZE; i++)
 136                 out[i] = cpu_to_le16(p1k[i]);
 137 }
 138
 139 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
 140                                      struct iwl_mvm_key_pn *ptk_pn,
 141                                      struct ieee80211_key_seq *seq,
 142                                      int tid, int queues)
 143 {
 144         const u8 *ret = seq->ccmp.pn;
 145         int i;
 146
 147         /* get the PN from mac80211, used on the default queue */
 148         ieee80211_get_key_rx_seq(key, tid, seq);
 149
 150         /* and use the internal data for the other queues */
 151         for (i = 1; i < queues; i++) {
 152                 const u8 *tmp = ptk_pn->q[i].pn[tid];
 153
 154                 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
 155                         ret = tmp;
 156         }
 157
 158         return ret;
 159 }
 160
 161 struct wowlan_key_data {
 162         struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 163         struct iwl_wowlan_tkip_params_cmd *tkip;
 164         bool error, use_rsc_tsc, use_tkip, configure_keys;
 165         int wep_key_idx;
 166 };
 167
 168 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
 169                                         struct ieee80211_vif *vif,
 170                                         struct ieee80211_sta *sta,
 171                                         struct ieee80211_key_conf *key,
 172                                         void *_data)
 173 {
 174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 175         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 176         struct wowlan_key_data *data = _data;
 177         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 178         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 179         struct iwl_p1k_cache *rx_p1ks;
 180         u8 *rx_mic_key;
 181         struct ieee80211_key_seq seq;
 182         u32 cur_rx_iv32 = 0;
 183         u16 p1k[IWL_P1K_SIZE];
 184         int ret, i;
 185
 186         switch (key->cipher) {
 187         case WLAN_CIPHER_SUITE_WEP40:
 188         case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
 189                 struct {
 190                         struct iwl_mvm_wep_key_cmd wep_key_cmd;
 191                         struct iwl_mvm_wep_key wep_key;
 192                 } __packed wkc = {
 193                         .wep_key_cmd.mac_id_n_color =
 194                                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 195                                                                 mvmvif->color)),
 196                         .wep_key_cmd.num_keys = 1,
 197                         /* firmware sets STA_KEY_FLG_WEP_13BYTES */
 198                         .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
 199                         .wep_key.key_index = key->keyidx,
 200                         .wep_key.key_size = key->keylen,
 201                 };
 202
 203                 /*
 204                  * This will fail -- the key functions don't set support
 205                  * pairwise WEP keys. However, that's better than silently
 206                  * failing WoWLAN. Or maybe not?
 207                  */
 208                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
 209                         break;
 210
 211                 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
 212                 if (key->keyidx == mvmvif->tx_key_idx) {
 213                         /* TX key must be at offset 0 */
 214                         wkc.wep_key.key_offset = 0;
 215                 } else {
 216                         /* others start at 1 */
 217                         data->wep_key_idx++;
 218                         wkc.wep_key.key_offset = data->wep_key_idx;
 219                 }
 220
 221                 if (data->configure_keys) {
 222                         mutex_lock(&mvm->mutex);
 223                         ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
 224                                                    sizeof(wkc), &wkc);
 225                         data->error = ret != 0;
 226
 227                         mvm->ptk_ivlen = key->iv_len;
 228                         mvm->ptk_icvlen = key->icv_len;
 229                         mvm->gtk_ivlen = key->iv_len;
 230                         mvm->gtk_icvlen = key->icv_len;
 231                         mutex_unlock(&mvm->mutex);
 232                 }
 233
 234                 /* don't upload key again */
 235                 return;
 236         }
 237         default:
 238                 data->error = true;
 239                 return;
 240         case WLAN_CIPHER_SUITE_AES_CMAC:
 241                 /*
 242                  * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
 243                  * but we also shouldn't abort suspend due to that. It does have
 244                  * support for the IGTK key renewal, but doesn't really use the
 245                  * IGTK for anything. This means we could spuriously wake up or
 246                  * be deauthenticated, but that was considered acceptable.
 247                  */
 248                 return;
 249         case WLAN_CIPHER_SUITE_TKIP:
 250                 if (sta) {
 251                         u64 pn64;
 252
 253                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 254                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 255
 256                         rx_p1ks = data->tkip->rx_uni;
 257
 258                         pn64 = atomic64_read(&key->tx_pn);
 259                         tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 260                         tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 261
 262                         ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
 263                                                   p1k);
 264                         iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
 265
 266                         memcpy(data->tkip->mic_keys.tx,
 267                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 268                                IWL_MIC_KEY_SIZE);
 269
 270                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
 271                 } else {
 272                         tkip_sc =
 273                                 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 274                         rx_p1ks = data->tkip->rx_multi;
 275                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
 276                 }
 277
 278                 /*
 279                  * For non-QoS this relies on the fact that both the uCode and
 280                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
 281                  * for checking the IV in the frames.
 282                  */
 283                 for (i = 0; i < IWL_NUM_RSC; i++) {
 284                         ieee80211_get_key_rx_seq(key, i, &seq);
 285                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 286                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 287                         /* wrapping isn't allowed, AP must rekey */
 288                         if (seq.tkip.iv32 > cur_rx_iv32)
 289                                 cur_rx_iv32 = seq.tkip.iv32;
 290                 }
 291
 292                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 293                                           cur_rx_iv32, p1k);
 294                 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
 295                 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
 296                                           cur_rx_iv32 + 1, p1k);
 297                 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
 298
 299                 memcpy(rx_mic_key,
 300                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 301                        IWL_MIC_KEY_SIZE);
 302
 303                 data->use_tkip = true;
 304                 data->use_rsc_tsc = true;
 305                 break;
 306         case WLAN_CIPHER_SUITE_CCMP:
 307                 if (sta) {
 308                         u64 pn64;
 309
 310                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 311                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 312
 313                         pn64 = atomic64_read(&key->tx_pn);
 314                         aes_tx_sc->pn = cpu_to_le64(pn64);
 315                 } else {
 316                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 317                 }
 318
 319                 /*
 320                  * For non-QoS this relies on the fact that both the uCode and
 321                  * mac80211/our RX code use TID 0 for checking the PN.
 322                  */
 323                 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
 324                         struct iwl_mvm_sta *mvmsta;
 325                         struct iwl_mvm_key_pn *ptk_pn;
 326                         const u8 *pn;
 327
 328                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 329                         ptk_pn = rcu_dereference_protected(
 330                                                 mvmsta->ptk_pn[key->keyidx],
 331                                                 lockdep_is_held(&mvm->mutex));
 332                         if (WARN_ON(!ptk_pn))
 333                                 break;
 334
 335                         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
 336                                 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
 337                                                 mvm->trans->num_rx_queues);
 338                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 339                                                            ((u64)pn[4] << 8) |
 340                                                            ((u64)pn[3] << 16) |
 341                                                            ((u64)pn[2] << 24) |
 342                                                            ((u64)pn[1] << 32) |
 343                                                            ((u64)pn[0] << 40));
 344                         }
 345                 } else {
 346                         for (i = 0; i < IWL_NUM_RSC; i++) {
 347                                 u8 *pn = seq.ccmp.pn;
 348
 349                                 ieee80211_get_key_rx_seq(key, i, &seq);
 350                                 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
 351                                                            ((u64)pn[4] << 8) |
 352                                                            ((u64)pn[3] << 16) |
 353                                                            ((u64)pn[2] << 24) |
 354                                                            ((u64)pn[1] << 32) |
 355                                                            ((u64)pn[0] << 40));
 356                         }
 357                 }
 358                 data->use_rsc_tsc = true;
 359                 break;
 360         }
 361
 362         if (data->configure_keys) {
 363                 mutex_lock(&mvm->mutex);
 364                 /*
 365                  * The D3 firmware hardcodes the key offset 0 as the key it
 366                  * uses to transmit packets to the AP, i.e. the PTK.
 367                  */
 368                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
 369                         mvm->ptk_ivlen = key->iv_len;
 370                         mvm->ptk_icvlen = key->icv_len;
 371                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
 372                 } else {
 373                         /*
 374                          * firmware only supports TSC/RSC for a single key,
 375                          * so if there are multiple keep overwriting them
 376                          * with new ones -- this relies on mac80211 doing
 377                          * list_add_tail().
 378                          */
 379                         mvm->gtk_ivlen = key->iv_len;
 380                         mvm->gtk_icvlen = key->icv_len;
 381                         ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
 382                 }
 383                 mutex_unlock(&mvm->mutex);
 384                 data->error = ret != 0;
 385         }
 386 }
 387
 388 static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
 389                                     struct cfg80211_wowlan *wowlan)
 390 {
 391         struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
 392         struct iwl_host_cmd cmd = {
 393                 .id = WOWLAN_PATTERNS,
 394                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 395         };
 396         int i, err;
 397
 398         if (!wowlan->n_patterns)
 399                 return 0;
 400
 401         cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
 402
 403         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 404         if (!pattern_cmd)
 405                 return -ENOMEM;
 406
 407         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 408
 409         for (i = 0; i < wowlan->n_patterns; i++) {
 410                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 411
 412                 memcpy(&pattern_cmd->patterns[i].mask,
 413                        wowlan->patterns[i].mask, mask_len);
 414                 memcpy(&pattern_cmd->patterns[i].pattern,
 415                        wowlan->patterns[i].pattern,
 416                        wowlan->patterns[i].pattern_len);
 417                 pattern_cmd->patterns[i].mask_size = mask_len;
 418                 pattern_cmd->patterns[i].pattern_size =
 419                         wowlan->patterns[i].pattern_len;
 420         }
 421
 422         cmd.data[0] = pattern_cmd;
 423         err = iwl_mvm_send_cmd(mvm, &cmd);
 424         kfree(pattern_cmd);
 425         return err;
 426 }
 427
 428 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
 429                                  struct cfg80211_wowlan *wowlan)
 430 {
 431         struct iwl_wowlan_patterns_cmd *pattern_cmd;
 432         struct iwl_host_cmd cmd = {
 433                 .id = WOWLAN_PATTERNS,
 434                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 435         };
 436         int i, err;
 437
 438         if (!wowlan->n_patterns)
 439                 return 0;
 440
 441         cmd.len[0] = sizeof(*pattern_cmd) +
 442                 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
 443
 444         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
 445         if (!pattern_cmd)
 446                 return -ENOMEM;
 447
 448         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
 449
 450         for (i = 0; i < wowlan->n_patterns; i++) {
 451                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
 452
 453                 pattern_cmd->patterns[i].pattern_type =
 454                         WOWLAN_PATTERN_TYPE_BITMASK;
 455
 456                 memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
 457                        wowlan->patterns[i].mask, mask_len);
 458                 memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
 459                        wowlan->patterns[i].pattern,
 460                        wowlan->patterns[i].pattern_len);
 461                 pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
 462                 pattern_cmd->patterns[i].u.bitmask.pattern_size =
 463                         wowlan->patterns[i].pattern_len;
 464         }
 465
 466         cmd.data[0] = pattern_cmd;
 467         err = iwl_mvm_send_cmd(mvm, &cmd);
 468         kfree(pattern_cmd);
 469         return err;
 470 }
 471
 472 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 473                                 struct ieee80211_sta *ap_sta)
 474 {
 475         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 476         struct ieee80211_chanctx_conf *ctx;
 477         u8 chains_static, chains_dynamic;
 478         struct cfg80211_chan_def chandef;
 479         int ret, i;
 480         struct iwl_binding_cmd_v1 binding_cmd = {};
 481         struct iwl_time_quota_cmd quota_cmd = {};
 482         struct iwl_time_quota_data *quota;
 483         u32 status;
 484
 485         if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
 486                 return -EINVAL;
 487
 488         /* add back the PHY */
 489         if (WARN_ON(!mvmvif->phy_ctxt))
 490                 return -EINVAL;
 491
 492         rcu_read_lock();
 493         ctx = rcu_dereference(vif->chanctx_conf);
 494         if (WARN_ON(!ctx)) {
 495                 rcu_read_unlock();
 496                 return -EINVAL;
 497         }
 498         chandef = ctx->def;
 499         chains_static = ctx->rx_chains_static;
 500         chains_dynamic = ctx->rx_chains_dynamic;
 501         rcu_read_unlock();
 502
 503         ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
 504                                    chains_static, chains_dynamic);
 505         if (ret)
 506                 return ret;
 507
 508         /* add back the MAC */
 509         mvmvif->uploaded = false;
 510
 511         if (WARN_ON(!vif->bss_conf.assoc))
 512                 return -EINVAL;
 513
 514         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 515         if (ret)
 516                 return ret;
 517
 518         /* add back binding - XXX refactor? */
 519         binding_cmd.id_and_color =
 520                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 521                                                 mvmvif->phy_ctxt->color));
 522         binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 523         binding_cmd.phy =
 524                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 525                                                 mvmvif->phy_ctxt->color));
 526         binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 527                                                               mvmvif->color));
 528         for (i = 1; i < MAX_MACS_IN_BINDING; i++)
 529                 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
 530
 531         status = 0;
 532         ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
 533                                           IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
 534                                           &status);
 535         if (ret) {
 536                 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
 537                 return ret;
 538         }
 539
 540         if (status) {
 541                 IWL_ERR(mvm, "Binding command failed: %u\n", status);
 542                 return -EIO;
 543         }
 544
 545         ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
 546         if (ret)
 547                 return ret;
 548         rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
 549
 550         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 551         if (ret)
 552                 return ret;
 553
 554         /* and some quota */
 555         quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
 556         quota->id_and_color =
 557                 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
 558                                                 mvmvif->phy_ctxt->color));
 559         quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 560         quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
 561
 562         for (i = 1; i < MAX_BINDINGS; i++) {
 563                 quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
 564                 quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
 565         }
 566
 567         ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
 568                                    iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
 569         if (ret)
 570                 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
 571
 572         if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
 573                 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
 574
 575         return 0;
 576 }
 577
 578 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
 579                                        struct ieee80211_vif *vif)
 580 {
 581         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 582         struct iwl_nonqos_seq_query_cmd query_cmd = {
 583                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
 584                 .mac_id_n_color =
 585                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 586                                                         mvmvif->color)),
 587         };
 588         struct iwl_host_cmd cmd = {
 589                 .id = NON_QOS_TX_COUNTER_CMD,
 590                 .flags = CMD_WANT_SKB,
 591         };
 592         int err;
 593         u32 size;
 594
 595         cmd.data[0] = &query_cmd;
 596         cmd.len[0] = sizeof(query_cmd);
 597
 598         err = iwl_mvm_send_cmd(mvm, &cmd);
 599         if (err)
 600                 return err;
 601
 602         size = iwl_rx_packet_payload_len(cmd.resp_pkt);
 603         if (size < sizeof(__le16)) {
 604                 err = -EINVAL;
 605         } else {
 606                 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
 607                 /* firmware returns next, not last-used seqno */
 608                 err = (u16) (err - 0x10);
 609         }
 610
 611         iwl_free_resp(&cmd);
 612         return err;
 613 }
 614
 615 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 616 {
 617         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 618         struct iwl_nonqos_seq_query_cmd query_cmd = {
 619                 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
 620                 .mac_id_n_color =
 621                         cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 622                                                         mvmvif->color)),
 623                 .value = cpu_to_le16(mvmvif->seqno),
 624         };
 625
 626         /* return if called during restart, not resume from D3 */
 627         if (!mvmvif->seqno_valid)
 628                 return;
 629
 630         mvmvif->seqno_valid = false;
 631
 632         if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
 633                                  sizeof(query_cmd), &query_cmd))
 634                 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
 635 }
 636
 637 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
 638 {
 639         iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
 640
 641         iwl_mvm_stop_device(mvm);
 642         /*
 643          * Set the HW restart bit -- this is mostly true as we're
 644          * going to load new firmware and reprogram that, though
 645          * the reprogramming is going to be manual to avoid adding
 646          * all the MACs that aren't support.
 647          * We don't have to clear up everything though because the
 648          * reprogramming is manual. When we resume, we'll actually
 649          * go through a proper restart sequence again to switch
 650          * back to the runtime firmware image.
 651          */
 652         set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 653
 654         /* the fw is reset, so all the keys are cleared */
 655         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 656
 657         mvm->ptk_ivlen = 0;
 658         mvm->ptk_icvlen = 0;
 659         mvm->ptk_ivlen = 0;
 660         mvm->ptk_icvlen = 0;
 661
 662         return iwl_mvm_load_d3_fw(mvm);
 663 }
 664
 665 static int
 666 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
 667                           struct cfg80211_wowlan *wowlan,
 668                           struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 669                           struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 670                           struct ieee80211_sta *ap_sta)
 671 {
 672         int ret;
 673         struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
 674
 675         /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
 676
 677         wowlan_config_cmd->is_11n_connection =
 678                                         ap_sta->ht_cap.ht_supported;
 679         wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
 680                 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
 681
 682         /* Query the last used seqno and set it */
 683         ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
 684         if (ret < 0)
 685                 return ret;
 686
 687         wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
 688
 689         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
 690
 691         if (wowlan->disconnect)
 692                 wowlan_config_cmd->wakeup_filter |=
 693                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 694                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 695         if (wowlan->magic_pkt)
 696                 wowlan_config_cmd->wakeup_filter |=
 697                         cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
 698         if (wowlan->gtk_rekey_failure)
 699                 wowlan_config_cmd->wakeup_filter |=
 700                         cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
 701         if (wowlan->eap_identity_req)
 702                 wowlan_config_cmd->wakeup_filter |=
 703                         cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
 704         if (wowlan->four_way_handshake)
 705                 wowlan_config_cmd->wakeup_filter |=
 706                         cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
 707         if (wowlan->n_patterns)
 708                 wowlan_config_cmd->wakeup_filter |=
 709                         cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
 710
 711         if (wowlan->rfkill_release)
 712                 wowlan_config_cmd->wakeup_filter |=
 713                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 714
 715         if (wowlan->tcp) {
 716                 /*
 717                  * Set the "link change" (really "link lost") flag as well
 718                  * since that implies losing the TCP connection.
 719                  */
 720                 wowlan_config_cmd->wakeup_filter |=
 721                         cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
 722                                     IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
 723                                     IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
 724                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE);
 725         }
 726
 727         if (wowlan->any) {
 728                 wowlan_config_cmd->wakeup_filter |=
 729                         cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
 730                                     IWL_WOWLAN_WAKEUP_LINK_CHANGE |
 731                                     IWL_WOWLAN_WAKEUP_RX_FRAME |
 732                                     IWL_WOWLAN_WAKEUP_BCN_FILTERING);
 733         }
 734
 735         return 0;
 736 }
 737
 738 static void
 739 iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm,
 740                           struct ieee80211_vif *vif,
 741                           void (*iter)(struct ieee80211_hw *hw,
 742                                        struct ieee80211_vif *vif,
 743                                        struct ieee80211_sta *sta,
 744                                        struct ieee80211_key_conf *key,
 745                                        void *data),
 746                           void *data)
 747 {
 748         struct ieee80211_sta *ap_sta;
 749
 750         rcu_read_lock();
 751
 752         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]);
 753         if (IS_ERR_OR_NULL(ap_sta))
 754                 goto out;
 755
 756         ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data);
 757 out:
 758         rcu_read_unlock();
 759 }
 760
 761 int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
 762                                      struct ieee80211_vif *vif,
 763                                      bool d0i3,
 764                                      u32 cmd_flags)
 765 {
 766         struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
 767         struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
 768         bool unified = fw_has_capa(&mvm->fw->ucode_capa,
 769                                    IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 770         struct wowlan_key_data key_data = {
 771                 .configure_keys = !d0i3 && !unified,
 772                 .use_rsc_tsc = false,
 773                 .tkip = &tkip_cmd,
 774                 .use_tkip = false,
 775         };
 776         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 777         int ret;
 778
 779         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
 780         if (!key_data.rsc_tsc)
 781                 return -ENOMEM;
 782
 783         /*
 784          * if we have to configure keys, call ieee80211_iter_keys(),
 785          * as we need non-atomic context in order to take the
 786          * required locks.
 787          * for the d0i3 we can't use ieee80211_iter_keys(), as
 788          * taking (almost) any mutex might result in deadlock.
 789          */
 790         if (!d0i3) {
 791                 /*
 792                  * Note that currently we don't propagate cmd_flags
 793                  * to the iterator. In case of key_data.configure_keys,
 794                  * all the configured commands are SYNC, and
 795                  * iwl_mvm_wowlan_program_keys() will take care of
 796                  * locking/unlocking mvm->mutex.
 797                  */
 798                 ieee80211_iter_keys(mvm->hw, vif,
 799                                     iwl_mvm_wowlan_program_keys,
 800                                     &key_data);
 801         } else {
 802                 iwl_mvm_iter_d0i3_ap_keys(mvm, vif,
 803                                           iwl_mvm_wowlan_program_keys,
 804                                           &key_data);
 805         }
 806
 807         if (key_data.error) {
 808                 ret = -EIO;
 809                 goto out;
 810         }
 811
 812         if (key_data.use_rsc_tsc) {
 813                 ret = iwl_mvm_send_cmd_pdu(mvm,
 814                                            WOWLAN_TSC_RSC_PARAM, cmd_flags,
 815                                            sizeof(*key_data.rsc_tsc),
 816                                            key_data.rsc_tsc);
 817                 if (ret)
 818                         goto out;
 819         }
 820
 821         if (key_data.use_tkip &&
 822             !fw_has_api(&mvm->fw->ucode_capa,
 823                         IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
 824                 ret = iwl_mvm_send_cmd_pdu(mvm,
 825                                            WOWLAN_TKIP_PARAM,
 826                                            cmd_flags, sizeof(tkip_cmd),
 827                                            &tkip_cmd);
 828                 if (ret)
 829                         goto out;
 830         }
 831
 832         /* configure rekey data only if offloaded rekey is supported (d3) */
 833         if (mvmvif->rekey_data.valid && !d0i3) {
 834                 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
 835                 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
 836                        NL80211_KCK_LEN);
 837                 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
 838                 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
 839                        NL80211_KEK_LEN);
 840                 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
 841                 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
 842
 843                 ret = iwl_mvm_send_cmd_pdu(mvm,
 844                                            WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
 845                                            sizeof(kek_kck_cmd),
 846                                            &kek_kck_cmd);
 847                 if (ret)
 848                         goto out;
 849         }
 850         ret = 0;
 851 out:
 852         kfree(key_data.rsc_tsc);
 853         return ret;
 854 }
 855
 856 static int
 857 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 858                       struct cfg80211_wowlan *wowlan,
 859                       struct iwl_wowlan_config_cmd *wowlan_config_cmd,
 860                       struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
 861                       struct ieee80211_sta *ap_sta)
 862 {
 863         int ret;
 864         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 865                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 866
 867         if (!unified_image) {
 868                 ret = iwl_mvm_switch_to_d3(mvm);
 869                 if (ret)
 870                         return ret;
 871
 872                 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
 873                 if (ret)
 874                         return ret;
 875         }
 876
 877         if (!iwlwifi_mod_params.swcrypto) {
 878                 /*
 879                  * This needs to be unlocked due to lock ordering
 880                  * constraints. Since we're in the suspend path
 881                  * that isn't really a problem though.
 882                  */
 883                 mutex_unlock(&mvm->mutex);
 884                 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false,
 885                                                        CMD_ASYNC);
 886                 mutex_lock(&mvm->mutex);
 887                 if (ret)
 888                         return ret;
 889         }
 890
 891         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 892                                    sizeof(*wowlan_config_cmd),
 893                                    wowlan_config_cmd);
 894         if (ret)
 895                 return ret;
 896
 897         if (fw_has_api(&mvm->fw->ucode_capa,
 898                        IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
 899                 ret = iwl_mvm_send_patterns(mvm, wowlan);
 900         else
 901                 ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
 902         if (ret)
 903                 return ret;
 904
 905         return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
 906 }
 907
 908 static int
 909 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
 910                          struct cfg80211_wowlan *wowlan,
 911                          struct cfg80211_sched_scan_request *nd_config,
 912                          struct ieee80211_vif *vif)
 913 {
 914         struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
 915         int ret;
 916         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
 917                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
 918
 919         if (!unified_image) {
 920                 ret = iwl_mvm_switch_to_d3(mvm);
 921                 if (ret)
 922                         return ret;
 923         } else {
 924                 /* In theory, we wouldn't have to stop a running sched
 925                  * scan in order to start another one (for
 926                  * net-detect).  But in practice this doesn't seem to
 927                  * work properly, so stop any running sched_scan now.
 928                  */
 929                 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
 930                 if (ret)
 931                         return ret;
 932         }
 933
 934         /* rfkill release can be either for wowlan or netdetect */
 935         if (wowlan->rfkill_release)
 936                 wowlan_config_cmd.wakeup_filter |=
 937                         cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
 938
 939         ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
 940                                    sizeof(wowlan_config_cmd),
 941                                    &wowlan_config_cmd);
 942         if (ret)
 943                 return ret;
 944
 945         ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
 946                                        IWL_MVM_SCAN_NETDETECT);
 947         if (ret)
 948                 return ret;
 949
 950         if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
 951                 return -EBUSY;
 952
 953         /* save the sched scan matchsets... */
 954         if (nd_config->n_match_sets) {
 955                 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
 956                                              sizeof(*nd_config->match_sets) *
 957                                              nd_config->n_match_sets,
 958                                              GFP_KERNEL);
 959                 if (mvm->nd_match_sets)
 960                         mvm->n_nd_match_sets = nd_config->n_match_sets;
 961         }
 962
 963         /* ...and the sched scan channels for later reporting */
 964         mvm->nd_channels = kmemdup(nd_config->channels,
 965                                    sizeof(*nd_config->channels) *
 966                                    nd_config->n_channels,
 967                                    GFP_KERNEL);
 968         if (mvm->nd_channels)
 969                 mvm->n_nd_channels = nd_config->n_channels;
 970
 971         return 0;
 972 }
 973
 974 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
 975 {
 976         kfree(mvm->nd_match_sets);
 977         mvm->nd_match_sets = NULL;
 978         mvm->n_nd_match_sets = 0;
 979         kfree(mvm->nd_channels);
 980         mvm->nd_channels = NULL;
 981         mvm->n_nd_channels = 0;
 982 }
 983
 984 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 985                              struct cfg80211_wowlan *wowlan,
 986                              bool test)
 987 {
 988         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 989         struct ieee80211_vif *vif = NULL;
 990         struct iwl_mvm_vif *mvmvif = NULL;
 991         struct ieee80211_sta *ap_sta = NULL;
 992         struct iwl_d3_manager_config d3_cfg_cmd_data = {
 993                 /*
 994                  * Program the minimum sleep time to 10 seconds, as many
 995                  * platforms have issues processing a wakeup signal while
 996                  * still being in the process of suspending.
 997                  */
 998                 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
 999         };
1000         struct iwl_host_cmd d3_cfg_cmd = {
1001                 .id = D3_CONFIG_CMD,
1002                 .flags = CMD_WANT_SKB,
1003                 .data[0] = &d3_cfg_cmd_data,
1004                 .len[0] = sizeof(d3_cfg_cmd_data),
1005         };
1006         int ret;
1007         int len __maybe_unused;
1008         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1009                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1010
1011         if (!wowlan) {
1012                 /*
1013                  * mac80211 shouldn't get here, but for D3 test
1014                  * it doesn't warrant a warning
1015                  */
1016                 WARN_ON(!test);
1017                 return -EINVAL;
1018         }
1019
1020         mutex_lock(&mvm->mutex);
1021
1022         vif = iwl_mvm_get_bss_vif(mvm);
1023         if (IS_ERR_OR_NULL(vif)) {
1024                 ret = 1;
1025                 goto out_noreset;
1026         }
1027
1028         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1029
1030         if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
1031                 /* if we're not associated, this must be netdetect */
1032                 if (!wowlan->nd_config) {
1033                         ret = 1;
1034                         goto out_noreset;
1035                 }
1036
1037                 ret = iwl_mvm_netdetect_config(
1038                         mvm, wowlan, wowlan->nd_config, vif);
1039                 if (ret)
1040                         goto out;
1041
1042                 mvm->net_detect = true;
1043         } else {
1044                 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1045
1046                 ap_sta = rcu_dereference_protected(
1047                         mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1048                         lockdep_is_held(&mvm->mutex));
1049                 if (IS_ERR_OR_NULL(ap_sta)) {
1050                         ret = -EINVAL;
1051                         goto out_noreset;
1052                 }
1053
1054                 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1055                                                 vif, mvmvif, ap_sta);
1056                 if (ret)
1057                         goto out_noreset;
1058                 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1059                                             vif, mvmvif, ap_sta);
1060                 if (ret)
1061                         goto out;
1062
1063                 mvm->net_detect = false;
1064         }
1065
1066         ret = iwl_mvm_power_update_device(mvm);
1067         if (ret)
1068                 goto out;
1069
1070         ret = iwl_mvm_power_update_mac(mvm);
1071         if (ret)
1072                 goto out;
1073
1074 #ifdef CONFIG_IWLWIFI_DEBUGFS
1075         if (mvm->d3_wake_sysassert)
1076                 d3_cfg_cmd_data.wakeup_flags |=
1077                         cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1078 #endif
1079
1080         /*
1081          * Prior to 9000 device family the driver needs to stop the dbg
1082          * recording before entering D3. In later devices the FW stops the
1083          * recording automatically.
1084          */
1085         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_9000)
1086                 iwl_fw_dbg_stop_recording(mvm->trans, NULL);
1087
1088         /* must be last -- this switches firmware state */
1089         ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1090         if (ret)
1091                 goto out;
1092 #ifdef CONFIG_IWLWIFI_DEBUGFS
1093         len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1094         if (len >= sizeof(u32)) {
1095                 mvm->d3_test_pme_ptr =
1096                         le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1097         }
1098 #endif
1099         iwl_free_resp(&d3_cfg_cmd);
1100
1101         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1102
1103         iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1104  out:
1105         if (ret < 0) {
1106                 iwl_mvm_free_nd(mvm);
1107
1108                 if (!unified_image) {
1109                         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1110                         if (mvm->fw_restart > 0) {
1111                                 mvm->fw_restart--;
1112                                 ieee80211_restart_hw(mvm->hw);
1113                         }
1114                 }
1115         }
1116  out_noreset:
1117         mutex_unlock(&mvm->mutex);
1118
1119         return ret;
1120 }
1121
1122 static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1123 {
1124         struct iwl_notification_wait wait_d3;
1125         static const u16 d3_notif[] = { D3_CONFIG_CMD };
1126         int ret;
1127
1128         iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1129                                    d3_notif, ARRAY_SIZE(d3_notif),
1130                                    NULL, NULL);
1131
1132         ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1133         if (ret)
1134                 goto remove_notif;
1135
1136         ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1137         WARN_ON_ONCE(ret);
1138         return ret;
1139
1140 remove_notif:
1141         iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1142         return ret;
1143 }
1144
1145 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1146 {
1147         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1148         struct iwl_trans *trans = mvm->trans;
1149         int ret;
1150
1151         /* make sure the d0i3 exit work is not pending */
1152         flush_work(&mvm->d0i3_exit_work);
1153         iwl_mvm_pause_tcm(mvm, true);
1154
1155         iwl_fw_runtime_suspend(&mvm->fwrt);
1156
1157         ret = iwl_trans_suspend(trans);
1158         if (ret)
1159                 return ret;
1160
1161         if (wowlan->any) {
1162                 trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
1163
1164                 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
1165                         ret = iwl_mvm_enter_d0i3_sync(mvm);
1166
1167                         if (ret)
1168                                 return ret;
1169                 }
1170
1171                 mutex_lock(&mvm->d0i3_suspend_mutex);
1172                 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1173                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1174
1175                 iwl_trans_d3_suspend(trans, false, false);
1176
1177                 return 0;
1178         }
1179
1180         trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1181
1182         return __iwl_mvm_suspend(hw, wowlan, false);
1183 }
1184
1185 /* converted data from the different status responses */
1186 struct iwl_wowlan_status_data {
1187         u16 pattern_number;
1188         u16 qos_seq_ctr[8];
1189         u32 wakeup_reasons;
1190         u32 wake_packet_length;
1191         u32 wake_packet_bufsize;
1192         const u8 *wake_packet;
1193 };
1194
1195 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1196                                           struct ieee80211_vif *vif,
1197                                           struct iwl_wowlan_status_data *status)
1198 {
1199         struct sk_buff *pkt = NULL;
1200         struct cfg80211_wowlan_wakeup wakeup = {
1201                 .pattern_idx = -1,
1202         };
1203         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1204         u32 reasons = status->wakeup_reasons;
1205
1206         if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1207                 wakeup_report = NULL;
1208                 goto report;
1209         }
1210
1211         pm_wakeup_event(mvm->dev, 0);
1212
1213         if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1214                 wakeup.magic_pkt = true;
1215
1216         if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1217                 wakeup.pattern_idx =
1218                         status->pattern_number;
1219
1220         if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1221                        IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1222                 wakeup.disconnect = true;
1223
1224         if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1225                 wakeup.gtk_rekey_failure = true;
1226
1227         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1228                 wakeup.rfkill_release = true;
1229
1230         if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1231                 wakeup.eap_identity_req = true;
1232
1233         if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1234                 wakeup.four_way_handshake = true;
1235
1236         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1237                 wakeup.tcp_connlost = true;
1238
1239         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1240                 wakeup.tcp_nomoretokens = true;
1241
1242         if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1243                 wakeup.tcp_match = true;
1244
1245         if (status->wake_packet_bufsize) {
1246                 int pktsize = status->wake_packet_bufsize;
1247                 int pktlen = status->wake_packet_length;
1248                 const u8 *pktdata = status->wake_packet;
1249                 struct ieee80211_hdr *hdr = (void *)pktdata;
1250                 int truncated = pktlen - pktsize;
1251
1252                 /* this would be a firmware bug */
1253                 if (WARN_ON_ONCE(truncated < 0))
1254                         truncated = 0;
1255
1256                 if (ieee80211_is_data(hdr->frame_control)) {
1257                         int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1258                         int ivlen = 0, icvlen = 4; /* also FCS */
1259
1260                         pkt = alloc_skb(pktsize, GFP_KERNEL);
1261                         if (!pkt)
1262                                 goto report;
1263
1264                         skb_put_data(pkt, pktdata, hdrlen);
1265                         pktdata += hdrlen;
1266                         pktsize -= hdrlen;
1267
1268                         if (ieee80211_has_protected(hdr->frame_control)) {
1269                                 /*
1270                                  * This is unlocked and using gtk_i(c)vlen,
1271                                  * but since everything is under RTNL still
1272                                  * that's not really a problem - changing
1273                                  * it would be difficult.
1274                                  */
1275                                 if (is_multicast_ether_addr(hdr->addr1)) {
1276                                         ivlen = mvm->gtk_ivlen;
1277                                         icvlen += mvm->gtk_icvlen;
1278                                 } else {
1279                                         ivlen = mvm->ptk_ivlen;
1280                                         icvlen += mvm->ptk_icvlen;
1281                                 }
1282                         }
1283
1284                         /* if truncated, FCS/ICV is (partially) gone */
1285                         if (truncated >= icvlen) {
1286                                 icvlen = 0;
1287                                 truncated -= icvlen;
1288                         } else {
1289                                 icvlen -= truncated;
1290                                 truncated = 0;
1291                         }
1292
1293                         pktsize -= ivlen + icvlen;
1294                         pktdata += ivlen;
1295
1296                         skb_put_data(pkt, pktdata, pktsize);
1297
1298                         if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1299                                 goto report;
1300                         wakeup.packet = pkt->data;
1301                         wakeup.packet_present_len = pkt->len;
1302                         wakeup.packet_len = pkt->len - truncated;
1303                         wakeup.packet_80211 = false;
1304                 } else {
1305                         int fcslen = 4;
1306
1307                         if (truncated >= 4) {
1308                                 truncated -= 4;
1309                                 fcslen = 0;
1310                         } else {
1311                                 fcslen -= truncated;
1312                                 truncated = 0;
1313                         }
1314                         pktsize -= fcslen;
1315                         wakeup.packet = status->wake_packet;
1316                         wakeup.packet_present_len = pktsize;
1317                         wakeup.packet_len = pktlen - truncated;
1318                         wakeup.packet_80211 = true;
1319                 }
1320         }
1321
1322  report:
1323         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1324         kfree_skb(pkt);
1325 }
1326
1327 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1328                                   struct ieee80211_key_seq *seq)
1329 {
1330         u64 pn;
1331
1332         pn = le64_to_cpu(sc->pn);
1333         seq->ccmp.pn[0] = pn >> 40;
1334         seq->ccmp.pn[1] = pn >> 32;
1335         seq->ccmp.pn[2] = pn >> 24;
1336         seq->ccmp.pn[3] = pn >> 16;
1337         seq->ccmp.pn[4] = pn >> 8;
1338         seq->ccmp.pn[5] = pn;
1339 }
1340
1341 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1342                                    struct ieee80211_key_seq *seq)
1343 {
1344         seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1345         seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1346 }
1347
1348 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1349                                    struct ieee80211_sta *sta,
1350                                    struct ieee80211_key_conf *key)
1351 {
1352         int tid;
1353
1354         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1355
1356         if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1357                 struct iwl_mvm_sta *mvmsta;
1358                 struct iwl_mvm_key_pn *ptk_pn;
1359
1360                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1361
1362                 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1363                                                    lockdep_is_held(&mvm->mutex));
1364                 if (WARN_ON(!ptk_pn))
1365                         return;
1366
1367                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1368                         struct ieee80211_key_seq seq = {};
1369                         int i;
1370
1371                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1372                         ieee80211_set_key_rx_seq(key, tid, &seq);
1373                         for (i = 1; i < mvm->trans->num_rx_queues; i++)
1374                                 memcpy(ptk_pn->q[i].pn[tid],
1375                                        seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1376                 }
1377         } else {
1378                 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1379                         struct ieee80211_key_seq seq = {};
1380
1381                         iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1382                         ieee80211_set_key_rx_seq(key, tid, &seq);
1383                 }
1384         }
1385 }
1386
1387 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1388                                     struct ieee80211_key_conf *key)
1389 {
1390         int tid;
1391
1392         BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1393
1394         for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1395                 struct ieee80211_key_seq seq = {};
1396
1397                 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1398                 ieee80211_set_key_rx_seq(key, tid, &seq);
1399         }
1400 }
1401
1402 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1403                                    struct ieee80211_key_conf *key,
1404                                    struct iwl_wowlan_status *status)
1405 {
1406         union iwl_all_tsc_rsc *rsc = &status->gtk[0].rsc.all_tsc_rsc;
1407
1408         switch (key->cipher) {
1409         case WLAN_CIPHER_SUITE_CCMP:
1410                 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1411                 break;
1412         case WLAN_CIPHER_SUITE_TKIP:
1413                 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1414                 break;
1415         default:
1416                 WARN_ON(1);
1417         }
1418 }
1419
1420 struct iwl_mvm_d3_gtk_iter_data {
1421         struct iwl_mvm *mvm;
1422         struct iwl_wowlan_status *status;
1423         void *last_gtk;
1424         u32 cipher;
1425         bool find_phase, unhandled_cipher;
1426         int num_keys;
1427 };
1428
1429 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1430                                    struct ieee80211_vif *vif,
1431                                    struct ieee80211_sta *sta,
1432                                    struct ieee80211_key_conf *key,
1433                                    void *_data)
1434 {
1435         struct iwl_mvm_d3_gtk_iter_data *data = _data;
1436
1437         if (data->unhandled_cipher)
1438                 return;
1439
1440         switch (key->cipher) {
1441         case WLAN_CIPHER_SUITE_WEP40:
1442         case WLAN_CIPHER_SUITE_WEP104:
1443                 /* ignore WEP completely, nothing to do */
1444                 return;
1445         case WLAN_CIPHER_SUITE_CCMP:
1446         case WLAN_CIPHER_SUITE_TKIP:
1447                 /* we support these */
1448                 break;
1449         default:
1450                 /* everything else (even CMAC for MFP) - disconnect from AP */
1451                 data->unhandled_cipher = true;
1452                 return;
1453         }
1454
1455         data->num_keys++;
1456
1457         /*
1458          * pairwise key - update sequence counters only;
1459          * note that this assumes no TDLS sessions are active
1460          */
1461         if (sta) {
1462                 struct ieee80211_key_seq seq = {};
1463                 union iwl_all_tsc_rsc *sc =
1464                         &data->status->gtk[0].rsc.all_tsc_rsc;
1465
1466                 if (data->find_phase)
1467                         return;
1468
1469                 switch (key->cipher) {
1470                 case WLAN_CIPHER_SUITE_CCMP:
1471                         iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1472                                                sta, key);
1473                         atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1474                         break;
1475                 case WLAN_CIPHER_SUITE_TKIP:
1476                         iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1477                         iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1478                         atomic64_set(&key->tx_pn,
1479                                      (u64)seq.tkip.iv16 |
1480                                      ((u64)seq.tkip.iv32 << 16));
1481                         break;
1482                 }
1483
1484                 /* that's it for this key */
1485                 return;
1486         }
1487
1488         if (data->find_phase) {
1489                 data->last_gtk = key;
1490                 data->cipher = key->cipher;
1491                 return;
1492         }
1493
1494         if (data->status->num_of_gtk_rekeys)
1495                 ieee80211_remove_key(key);
1496         else if (data->last_gtk == key)
1497                 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1498 }
1499
1500 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1501                                           struct ieee80211_vif *vif,
1502                                           struct iwl_wowlan_status *status)
1503 {
1504         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1505         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1506                 .mvm = mvm,
1507                 .status = status,
1508         };
1509         u32 disconnection_reasons =
1510                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1511                 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1512
1513         if (!status || !vif->bss_conf.bssid)
1514                 return false;
1515
1516         if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1517                 return false;
1518
1519         /* find last GTK that we used initially, if any */
1520         gtkdata.find_phase = true;
1521         ieee80211_iter_keys(mvm->hw, vif,
1522                             iwl_mvm_d3_update_keys, &gtkdata);
1523         /* not trying to keep connections with MFP/unhandled ciphers */
1524         if (gtkdata.unhandled_cipher)
1525                 return false;
1526         if (!gtkdata.num_keys)
1527                 goto out;
1528         if (!gtkdata.last_gtk)
1529                 return false;
1530
1531         /*
1532          * invalidate all other GTKs that might still exist and update
1533          * the one that we used
1534          */
1535         gtkdata.find_phase = false;
1536         ieee80211_iter_keys(mvm->hw, vif,
1537                             iwl_mvm_d3_update_keys, &gtkdata);
1538
1539         if (status->num_of_gtk_rekeys) {
1540                 struct ieee80211_key_conf *key;
1541                 struct {
1542                         struct ieee80211_key_conf conf;
1543                         u8 key[32];
1544                 } conf = {
1545                         .conf.cipher = gtkdata.cipher,
1546                         .conf.keyidx =
1547                                 iwlmvm_wowlan_gtk_idx(&status->gtk[0]),
1548                 };
1549                 __be64 replay_ctr;
1550
1551                 switch (gtkdata.cipher) {
1552                 case WLAN_CIPHER_SUITE_CCMP:
1553                         conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1554                         memcpy(conf.conf.key, status->gtk[0].key,
1555                                WLAN_KEY_LEN_CCMP);
1556                         break;
1557                 case WLAN_CIPHER_SUITE_TKIP:
1558                         conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1559                         memcpy(conf.conf.key, status->gtk[0].key, 16);
1560                         /* leave TX MIC key zeroed, we don't use it anyway */
1561                         memcpy(conf.conf.key +
1562                                NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1563                                status->gtk[0].tkip_mic_key, 8);
1564                         break;
1565                 }
1566
1567                 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1568                 if (IS_ERR(key))
1569                         return false;
1570                 iwl_mvm_set_key_rx_seq(mvm, key, status);
1571
1572                 replay_ctr =
1573                         cpu_to_be64(le64_to_cpu(status->replay_ctr));
1574
1575                 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1576                                            (void *)&replay_ctr, GFP_KERNEL);
1577         }
1578
1579 out:
1580         mvmvif->seqno_valid = true;
1581         /* +0x10 because the set API expects next-to-use, not last-used */
1582         mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1583
1584         return true;
1585 }
1586
1587 struct iwl_wowlan_status *iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm)
1588 {
1589         struct iwl_wowlan_status *v7, *status;
1590         struct iwl_host_cmd cmd = {
1591                 .id = WOWLAN_GET_STATUSES,
1592                 .flags = CMD_WANT_SKB,
1593         };
1594         int ret, len, status_size;
1595
1596         lockdep_assert_held(&mvm->mutex);
1597
1598         ret = iwl_mvm_send_cmd(mvm, &cmd);
1599         if (ret) {
1600                 IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
1601                 return ERR_PTR(ret);
1602         }
1603
1604         if (!fw_has_api(&mvm->fw->ucode_capa,
1605                         IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
1606                 struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
1607                 int data_size;
1608
1609                 status_size = sizeof(*v6);
1610                 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1611
1612                 if (len < status_size) {
1613                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1614                         status = ERR_PTR(-EIO);
1615                         goto out_free_resp;
1616                 }
1617
1618                 data_size = ALIGN(le32_to_cpu(v6->wake_packet_bufsize), 4);
1619
1620                 if (len != (status_size + data_size)) {
1621                         IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1622                         status = ERR_PTR(-EIO);
1623                         goto out_free_resp;
1624                 }
1625
1626                 status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL);
1627                 if (!status)
1628                         goto out_free_resp;
1629
1630                 BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
1631                              sizeof(status->gtk[0].key));
1632                 BUILD_BUG_ON(sizeof(v6->gtk.tkip_mic_key) >
1633                              sizeof(status->gtk[0].tkip_mic_key));
1634
1635                 /* copy GTK info to the right place */
1636                 memcpy(status->gtk[0].key, v6->gtk.decrypt_key,
1637                        sizeof(v6->gtk.decrypt_key));
1638                 memcpy(status->gtk[0].tkip_mic_key, v6->gtk.tkip_mic_key,
1639                        sizeof(v6->gtk.tkip_mic_key));
1640                 memcpy(&status->gtk[0].rsc, &v6->gtk.rsc,
1641                        sizeof(status->gtk[0].rsc));
1642
1643                 /* hardcode the key length to 16 since v6 only supports 16 */
1644                 status->gtk[0].key_len = 16;
1645
1646                 /*
1647                  * The key index only uses 2 bits (values 0 to 3) and
1648                  * we always set bit 7 which means this is the
1649                  * currently used key.
1650                  */
1651                 status->gtk[0].key_flags = v6->gtk.key_index | BIT(7);
1652
1653                 status->replay_ctr = v6->replay_ctr;
1654
1655                 /* everything starting from pattern_number is identical */
1656                 memcpy(&status->pattern_number, &v6->pattern_number,
1657                        offsetof(struct iwl_wowlan_status, wake_packet) -
1658                        offsetof(struct iwl_wowlan_status, pattern_number) +
1659                        data_size);
1660
1661                 goto out_free_resp;
1662         }
1663
1664         v7 = (void *)cmd.resp_pkt->data;
1665         status_size = sizeof(*v7);
1666         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1667
1668         if (len < status_size) {
1669                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1670                 status = ERR_PTR(-EIO);
1671                 goto out_free_resp;
1672         }
1673
1674         if (len != (status_size +
1675                     ALIGN(le32_to_cpu(v7->wake_packet_bufsize), 4))) {
1676                 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1677                 status = ERR_PTR(-EIO);
1678                 goto out_free_resp;
1679         }
1680
1681         status = kmemdup(v7, len, GFP_KERNEL);
1682
1683 out_free_resp:
1684         iwl_free_resp(&cmd);
1685         return status;
1686 }
1687
1688 static struct iwl_wowlan_status *
1689 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm)
1690 {
1691         int ret;
1692
1693         /* only for tracing for now */
1694         ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1695         if (ret)
1696                 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1697
1698         return iwl_mvm_send_wowlan_get_status(mvm);
1699 }
1700
1701 /* releases the MVM mutex */
1702 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1703                                          struct ieee80211_vif *vif)
1704 {
1705         struct iwl_wowlan_status_data status;
1706         struct iwl_wowlan_status *fw_status;
1707         int i;
1708         bool keep;
1709         struct iwl_mvm_sta *mvm_ap_sta;
1710
1711         fw_status = iwl_mvm_get_wakeup_status(mvm);
1712         if (IS_ERR_OR_NULL(fw_status))
1713                 goto out_unlock;
1714
1715         status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1716         for (i = 0; i < 8; i++)
1717                 status.qos_seq_ctr[i] =
1718                         le16_to_cpu(fw_status->qos_seq_ctr[i]);
1719         status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1720         status.wake_packet_length =
1721                 le32_to_cpu(fw_status->wake_packet_length);
1722         status.wake_packet_bufsize =
1723                 le32_to_cpu(fw_status->wake_packet_bufsize);
1724         status.wake_packet = fw_status->wake_packet;
1725
1726         /* still at hard-coded place 0 for D3 image */
1727         mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1728         if (!mvm_ap_sta)
1729                 goto out_free;
1730
1731         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1732                 u16 seq = status.qos_seq_ctr[i];
1733                 /* firmware stores last-used value, we store next value */
1734                 seq += 0x10;
1735                 mvm_ap_sta->tid_data[i].seq_number = seq;
1736         }
1737
1738         /* now we have all the data we need, unlock to avoid mac80211 issues */
1739         mutex_unlock(&mvm->mutex);
1740
1741         iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1742
1743         keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1744
1745         kfree(fw_status);
1746         return keep;
1747
1748 out_free:
1749         kfree(fw_status);
1750 out_unlock:
1751         mutex_unlock(&mvm->mutex);
1752         return false;
1753 }
1754
1755 void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
1756                               struct ieee80211_vif *vif,
1757                               struct iwl_wowlan_status *status)
1758 {
1759         struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1760                 .mvm = mvm,
1761                 .status = status,
1762         };
1763
1764         /*
1765          * rekey handling requires taking locks that can't be taken now.
1766          * however, d0i3 doesn't offload rekey, so we're fine.
1767          */
1768         if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
1769                 return;
1770
1771         /* find last GTK that we used initially, if any */
1772         gtkdata.find_phase = true;
1773         iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1774
1775         gtkdata.find_phase = false;
1776         iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, &gtkdata);
1777 }
1778
1779 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
1780                           IWL_SCAN_MAX_PROFILES)
1781
1782 struct iwl_mvm_nd_query_results {
1783         u32 matched_profiles;
1784         u8 matches[ND_QUERY_BUF_LEN];
1785 };
1786
1787 static int
1788 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1789                                 struct iwl_mvm_nd_query_results *results)
1790 {
1791         struct iwl_scan_offload_profiles_query *query;
1792         struct iwl_host_cmd cmd = {
1793                 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1794                 .flags = CMD_WANT_SKB,
1795         };
1796         int ret, len;
1797         size_t query_len, matches_len;
1798
1799         ret = iwl_mvm_send_cmd(mvm, &cmd);
1800         if (ret) {
1801                 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1802                 return ret;
1803         }
1804
1805         if (fw_has_api(&mvm->fw->ucode_capa,
1806                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1807                 query_len = sizeof(struct iwl_scan_offload_profiles_query);
1808                 matches_len = sizeof(struct iwl_scan_offload_profile_match) *
1809                         IWL_SCAN_MAX_PROFILES;
1810         } else {
1811                 query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
1812                 matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
1813                         IWL_SCAN_MAX_PROFILES;
1814         }
1815
1816         len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1817         if (len < query_len) {
1818                 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1819                 ret = -EIO;
1820                 goto out_free_resp;
1821         }
1822
1823         query = (void *)cmd.resp_pkt->data;
1824
1825         results->matched_profiles = le32_to_cpu(query->matched_profiles);
1826         memcpy(results->matches, query->matches, matches_len);
1827
1828 #ifdef CONFIG_IWLWIFI_DEBUGFS
1829         mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1830 #endif
1831
1832 out_free_resp:
1833         iwl_free_resp(&cmd);
1834         return ret;
1835 }
1836
1837 static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
1838                                          struct iwl_mvm_nd_query_results *query,
1839                                          int idx)
1840 {
1841         int n_chans = 0, i;
1842
1843         if (fw_has_api(&mvm->fw->ucode_capa,
1844                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1845                 struct iwl_scan_offload_profile_match *matches =
1846                         (struct iwl_scan_offload_profile_match *)query->matches;
1847
1848                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
1849                         n_chans += hweight8(matches[idx].matching_channels[i]);
1850         } else {
1851                 struct iwl_scan_offload_profile_match_v1 *matches =
1852                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1853
1854                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
1855                         n_chans += hweight8(matches[idx].matching_channels[i]);
1856         }
1857
1858         return n_chans;
1859 }
1860
1861 static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
1862                                     struct iwl_mvm_nd_query_results *query,
1863                                     struct cfg80211_wowlan_nd_match *match,
1864                                     int idx)
1865 {
1866         int i;
1867
1868         if (fw_has_api(&mvm->fw->ucode_capa,
1869                        IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
1870                 struct iwl_scan_offload_profile_match *matches =
1871                         (struct iwl_scan_offload_profile_match *)query->matches;
1872
1873                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
1874                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1875                                 match->channels[match->n_channels++] =
1876                                         mvm->nd_channels[i]->center_freq;
1877         } else {
1878                 struct iwl_scan_offload_profile_match_v1 *matches =
1879                         (struct iwl_scan_offload_profile_match_v1 *)query->matches;
1880
1881                 for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
1882                         if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
1883                                 match->channels[match->n_channels++] =
1884                                         mvm->nd_channels[i]->center_freq;
1885         }
1886 }
1887
1888 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1889                                             struct ieee80211_vif *vif)
1890 {
1891         struct cfg80211_wowlan_nd_info *net_detect = NULL;
1892         struct cfg80211_wowlan_wakeup wakeup = {
1893                 .pattern_idx = -1,
1894         };
1895         struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1896         struct iwl_mvm_nd_query_results query;
1897         struct iwl_wowlan_status *fw_status;
1898         unsigned long matched_profiles;
1899         u32 reasons = 0;
1900         int i, n_matches, ret;
1901
1902         fw_status = iwl_mvm_get_wakeup_status(mvm);
1903         if (!IS_ERR_OR_NULL(fw_status)) {
1904                 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1905                 kfree(fw_status);
1906         }
1907
1908         if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1909                 wakeup.rfkill_release = true;
1910
1911         if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1912                 goto out;
1913
1914         ret = iwl_mvm_netdetect_query_results(mvm, &query);
1915         if (ret || !query.matched_profiles) {
1916                 wakeup_report = NULL;
1917                 goto out;
1918         }
1919
1920         matched_profiles = query.matched_profiles;
1921         if (mvm->n_nd_match_sets) {
1922                 n_matches = hweight_long(matched_profiles);
1923         } else {
1924                 IWL_ERR(mvm, "no net detect match information available\n");
1925                 n_matches = 0;
1926         }
1927
1928         net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
1929                              GFP_KERNEL);
1930         if (!net_detect || !n_matches)
1931                 goto out_report_nd;
1932
1933         for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1934                 struct cfg80211_wowlan_nd_match *match;
1935                 int idx, n_channels = 0;
1936
1937                 n_channels = iwl_mvm_query_num_match_chans(mvm, &query, i);
1938
1939                 match = kzalloc(struct_size(match, channels, n_channels),
1940                                 GFP_KERNEL);
1941                 if (!match)
1942                         goto out_report_nd;
1943
1944                 net_detect->matches[net_detect->n_matches++] = match;
1945
1946                 /* We inverted the order of the SSIDs in the scan
1947                  * request, so invert the index here.
1948                  */
1949                 idx = mvm->n_nd_match_sets - i - 1;
1950                 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
1951                 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
1952                        match->ssid.ssid_len);
1953
1954                 if (mvm->n_nd_channels < n_channels)
1955                         continue;
1956
1957                 iwl_mvm_query_set_freqs(mvm, &query, match, i);
1958         }
1959
1960 out_report_nd:
1961         wakeup.net_detect = net_detect;
1962 out:
1963         iwl_mvm_free_nd(mvm);
1964
1965         mutex_unlock(&mvm->mutex);
1966         ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1967
1968         if (net_detect) {
1969                 for (i = 0; i < net_detect->n_matches; i++)
1970                         kfree(net_detect->matches[i]);
1971                 kfree(net_detect);
1972         }
1973 }
1974
1975 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
1976                                        struct ieee80211_vif *vif)
1977 {
1978         /* skip the one we keep connection on */
1979         if (data == vif)
1980                 return;
1981
1982         if (vif->type == NL80211_IFTYPE_STATION)
1983                 ieee80211_resume_disconnect(vif);
1984 }
1985
1986 static int iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
1987                                    struct ieee80211_vif *vif)
1988 {
1989         u32 base = mvm->trans->dbg.lmac_error_event_table[0];
1990         struct error_table_start {
1991                 /* cf. struct iwl_error_event_table */
1992                 u32 valid;
1993                 u32 error_id;
1994         } err_info;
1995
1996         iwl_trans_read_mem_bytes(mvm->trans, base,
1997                                  &err_info, sizeof(err_info));
1998
1999         if (err_info.valid &&
2000             err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
2001                 struct cfg80211_wowlan_wakeup wakeup = {
2002                         .rfkill_release = true,
2003                 };
2004                 ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL);
2005         }
2006         return err_info.valid;
2007 }
2008
2009 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2010 {
2011         struct ieee80211_vif *vif = NULL;
2012         int ret = 1;
2013         enum iwl_d3_status d3_status;
2014         bool keep = false;
2015         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2016                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2017         bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
2018                                       IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
2019
2020         mutex_lock(&mvm->mutex);
2021
2022         /* get the BSS vif pointer again */
2023         vif = iwl_mvm_get_bss_vif(mvm);
2024         if (IS_ERR_OR_NULL(vif))
2025                 goto err;
2026
2027         ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2028         if (ret)
2029                 goto err;
2030
2031         if (d3_status != IWL_D3_STATUS_ALIVE) {
2032                 IWL_INFO(mvm, "Device was reset during suspend\n");
2033                 goto err;
2034         }
2035
2036         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2037
2038         if (iwl_mvm_check_rt_status(mvm, vif)) {
2039                 set_bit(STATUS_FW_ERROR, &mvm->trans->status);
2040                 iwl_mvm_dump_nic_error_log(mvm);
2041                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
2042                                         false, 0);
2043                 ret = 1;
2044                 goto err;
2045         }
2046
2047         if (d0i3_first) {
2048                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2049                 if (ret < 0) {
2050                         IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
2051                                 ret);
2052                         goto err;
2053                 }
2054         }
2055
2056         /*
2057          * Query the current location and source from the D3 firmware so we
2058          * can play it back when we re-intiailize the D0 firmware
2059          */
2060         iwl_mvm_update_changed_regdom(mvm);
2061
2062         if (!unified_image)
2063                 /*  Re-configure default SAR profile */
2064                 iwl_mvm_sar_select_profile(mvm, 1, 1);
2065
2066         if (mvm->net_detect) {
2067                 /* If this is a non-unified image, we restart the FW,
2068                  * so no need to stop the netdetect scan.  If that
2069                  * fails, continue and try to get the wake-up reasons,
2070                  * but trigger a HW restart by keeping a failure code
2071                  * in ret.
2072                  */
2073                 if (unified_image)
2074                         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2075                                                 false);
2076
2077                 iwl_mvm_query_netdetect_reasons(mvm, vif);
2078                 /* has unlocked the mutex, so skip that */
2079                 goto out;
2080         } else {
2081                 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2082 #ifdef CONFIG_IWLWIFI_DEBUGFS
2083                 if (keep)
2084                         mvm->keep_vif = vif;
2085 #endif
2086                 /* has unlocked the mutex, so skip that */
2087                 goto out_iterate;
2088         }
2089
2090 err:
2091         iwl_mvm_free_nd(mvm);
2092         mutex_unlock(&mvm->mutex);
2093
2094 out_iterate:
2095         if (!test)
2096                 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2097                         IEEE80211_IFACE_ITER_NORMAL,
2098                         iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2099
2100 out:
2101         /* no need to reset the device in unified images, if successful */
2102         if (unified_image && !ret) {
2103                 /* nothing else to do if we already sent D0I3_END_CMD */
2104                 if (d0i3_first)
2105                         return 0;
2106
2107                 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
2108                 if (!ret)
2109                         return 0;
2110         }
2111
2112         /*
2113          * Reconfigure the device in one of the following cases:
2114          * 1. We are not using a unified image
2115          * 2. We are using a unified image but had an error while exiting D3
2116          */
2117         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
2118         /*
2119          * When switching images we return 1, which causes mac80211
2120          * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.
2121          * This type of reconfig calls iwl_mvm_restart_complete(),
2122          * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need
2123          * to take the reference here.
2124          */
2125         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
2126
2127         return 1;
2128 }
2129
2130 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2131 {
2132         iwl_trans_resume(mvm->trans);
2133
2134         return __iwl_mvm_resume(mvm, false);
2135 }
2136
2137 static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
2138 {
2139         bool exit_now;
2140         enum iwl_d3_status d3_status;
2141         struct iwl_trans *trans = mvm->trans;
2142
2143         iwl_trans_d3_resume(trans, &d3_status, false, false);
2144
2145         /*
2146          * make sure to clear D0I3_DEFER_WAKEUP before
2147          * calling iwl_trans_resume(), which might wait
2148          * for d0i3 exit completion.
2149          */
2150         mutex_lock(&mvm->d0i3_suspend_mutex);
2151         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
2152         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
2153                                         &mvm->d0i3_suspend_flags);
2154         mutex_unlock(&mvm->d0i3_suspend_mutex);
2155         if (exit_now) {
2156                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
2157                 _iwl_mvm_exit_d0i3(mvm);
2158         }
2159
2160         iwl_trans_resume(trans);
2161
2162         if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
2163                 int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
2164
2165                 if (ret)
2166                         return ret;
2167                 /*
2168                  * d0i3 exit will be deferred until reconfig_complete.
2169                  * make sure there we are out of d0i3.
2170                  */
2171         }
2172         return 0;
2173 }
2174
2175 int iwl_mvm_resume(struct ieee80211_hw *hw)
2176 {
2177         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2178         int ret;
2179
2180         if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
2181                 ret = iwl_mvm_resume_d0i3(mvm);
2182         else
2183                 ret = iwl_mvm_resume_d3(mvm);
2184
2185         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2186
2187         iwl_mvm_resume_tcm(mvm);
2188
2189         iwl_fw_runtime_resume(&mvm->fwrt);
2190
2191         return ret;
2192 }
2193
2194 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2195 {
2196         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2197
2198         device_set_wakeup_enable(mvm->trans->dev, enabled);
2199 }
2200
2201 #ifdef CONFIG_IWLWIFI_DEBUGFS
2202 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2203 {
2204         struct iwl_mvm *mvm = inode->i_private;
2205         int err;
2206
2207         if (mvm->d3_test_active)
2208                 return -EBUSY;
2209
2210         file->private_data = inode->i_private;
2211
2212         synchronize_net();
2213
2214         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2215
2216         iwl_mvm_pause_tcm(mvm, true);
2217
2218         iwl_fw_runtime_suspend(&mvm->fwrt);
2219
2220         /* start pseudo D3 */
2221         rtnl_lock();
2222         err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2223         rtnl_unlock();
2224         if (err > 0)
2225                 err = -EINVAL;
2226         if (err)
2227                 return err;
2228
2229         mvm->d3_test_active = true;
2230         mvm->keep_vif = NULL;
2231         return 0;
2232 }
2233
2234 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2235                                     size_t count, loff_t *ppos)
2236 {
2237         struct iwl_mvm *mvm = file->private_data;
2238         u32 pme_asserted;
2239
2240         while (true) {
2241                 /* read pme_ptr if available */
2242                 if (mvm->d3_test_pme_ptr) {
2243                         pme_asserted = iwl_trans_read_mem32(mvm->trans,
2244                                                 mvm->d3_test_pme_ptr);
2245                         if (pme_asserted)
2246                                 break;
2247                 }
2248
2249                 if (msleep_interruptible(100))
2250                         break;
2251         }
2252
2253         return 0;
2254 }
2255
2256 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2257                                               struct ieee80211_vif *vif)
2258 {
2259         /* skip the one we keep connection on */
2260         if (_data == vif)
2261                 return;
2262
2263         if (vif->type == NL80211_IFTYPE_STATION)
2264                 ieee80211_connection_loss(vif);
2265 }
2266
2267 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2268 {
2269         struct iwl_mvm *mvm = inode->i_private;
2270         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2271                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2272
2273         mvm->d3_test_active = false;
2274
2275         iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
2276
2277         rtnl_lock();
2278         __iwl_mvm_resume(mvm, true);
2279         rtnl_unlock();
2280
2281         iwl_mvm_resume_tcm(mvm);
2282
2283         iwl_fw_runtime_resume(&mvm->fwrt);
2284
2285         mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2286
2287         iwl_abort_notification_waits(&mvm->notif_wait);
2288         if (!unified_image) {
2289                 int remaining_time = 10;
2290
2291                 ieee80211_restart_hw(mvm->hw);
2292
2293                 /* wait for restart and disconnect all interfaces */
2294                 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2295                        remaining_time > 0) {
2296                         remaining_time--;
2297                         msleep(1000);
2298                 }
2299
2300                 if (remaining_time == 0)
2301                         IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2302         }
2303
2304         ieee80211_iterate_active_interfaces_atomic(
2305                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2306                 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2307
2308         return 0;
2309 }
2310
2311 const struct file_operations iwl_dbgfs_d3_test_ops = {
2312         .llseek = no_llseek,
2313         .open = iwl_mvm_d3_test_open,
2314         .read = iwl_mvm_d3_test_read,
2315         .release = iwl_mvm_d3_test_release,
2316 };
2317 #endif