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

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2015, 2018-2023 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <net/mac80211.h>
   8
   9 #include "mvm.h"
  10 #include "sta.h"
  11 #include "rs.h"
  12
  13 /*
  14  * New version of ADD_STA_sta command added new fields at the end of the
  15  * structure, so sending the size of the relevant API's structure is enough to
  16  * support both API versions.
  17  */
  18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
  19 {
  20         if (iwl_mvm_has_new_rx_api(mvm) ||
  21             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
  22                 return sizeof(struct iwl_mvm_add_sta_cmd);
  23         else
  24                 return sizeof(struct iwl_mvm_add_sta_cmd_v7);
  25 }
  26
  27 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype)
  28 {
  29         int sta_id;
  30         u32 reserved_ids = 0;
  31
  32         BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32);
  33         WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
  34
  35         lockdep_assert_held(&mvm->mutex);
  36
  37         /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
  38         if (iftype != NL80211_IFTYPE_STATION)
  39                 reserved_ids = BIT(0);
  40
  41         /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
  42         for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) {
  43                 if (BIT(sta_id) & reserved_ids)
  44                         continue;
  45
  46                 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
  47                                                lockdep_is_held(&mvm->mutex)))
  48                         return sta_id;
  49         }
  50         return IWL_MVM_INVALID_STA;
  51 }
  52
  53 /* Calculate the ampdu density and max size */
  54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta,
  55                                struct ieee80211_bss_conf *link_conf,
  56                                u32 *_agg_size)
  57 {
  58         u32 agg_size = 0, mpdu_dens = 0;
  59
  60         if (WARN_ON(!link_sta))
  61                 return 0;
  62
  63         /* Note that we always use only legacy & highest supported PPDUs, so
  64          * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating
  65          * the maximum A-MPDU size of various PPDU types in different bands,
  66          * we only need to worry about the highest supported PPDU type here.
  67          */
  68
  69         if (link_sta->ht_cap.ht_supported) {
  70                 agg_size = link_sta->ht_cap.ampdu_factor;
  71                 mpdu_dens = link_sta->ht_cap.ampdu_density;
  72         }
  73
  74         if (link_conf->chandef.chan->band == NL80211_BAND_6GHZ) {
  75                 /* overwrite HT values on 6 GHz */
  76                 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa,
  77                                           IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START);
  78                 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa,
  79                                          IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);
  80         } else if (link_sta->vht_cap.vht_supported) {
  81                 /* if VHT supported overwrite HT value */
  82                 agg_size = u32_get_bits(link_sta->vht_cap.cap,
  83                                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK);
  84         }
  85
  86         /* D6.0 10.12.2 A-MPDU length limit rules
  87          * A STA indicates the maximum length of the A-MPDU preEOF padding
  88          * that it can receive in an HE PPDU in the Maximum A-MPDU Length
  89          * Exponent field in its HT Capabilities, VHT Capabilities,
  90          * and HE 6 GHz Band Capabilities elements (if present) and the
  91          * Maximum AMPDU Length Exponent Extension field in its HE
  92          * Capabilities element
  93          */
  94         if (link_sta->he_cap.has_he)
  95                 agg_size +=
  96                         u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3],
  97                                     IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK);
  98
  99         if (link_sta->eht_cap.has_eht)
 100                 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1],
 101                                         IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK);
 102
 103         /* Limit to max A-MPDU supported by FW */
 104         agg_size = min_t(u32, agg_size,
 105                          STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT);
 106
 107         *_agg_size = agg_size;
 108         return mpdu_dens;
 109 }
 110
 111 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta)
 112 {
 113         u8 uapsd_acs = 0;
 114
 115         if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
 116                 uapsd_acs |= BIT(AC_BK);
 117         if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
 118                 uapsd_acs |= BIT(AC_BE);
 119         if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
 120                 uapsd_acs |= BIT(AC_VI);
 121         if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
 122                 uapsd_acs |= BIT(AC_VO);
 123
 124         return uapsd_acs | uapsd_acs << 4;
 125 }
 126
 127 /* send station add/update command to firmware */
 128 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 129                            bool update, unsigned int flags)
 130 {
 131         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 132         struct iwl_mvm_add_sta_cmd add_sta_cmd = {
 133                 .sta_id = mvm_sta->deflink.sta_id,
 134                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
 135                 .add_modify = update ? 1 : 0,
 136                 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
 137                                                  STA_FLG_MIMO_EN_MSK |
 138                                                  STA_FLG_RTS_MIMO_PROT),
 139                 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
 140         };
 141         int ret;
 142         u32 status;
 143         u32 agg_size = 0, mpdu_dens = 0;
 144
 145         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
 146                 add_sta_cmd.station_type = mvm_sta->sta_type;
 147
 148         if (!update || (flags & STA_MODIFY_QUEUES)) {
 149                 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
 150
 151                 if (!iwl_mvm_has_new_tx_api(mvm)) {
 152                         add_sta_cmd.tfd_queue_msk =
 153                                 cpu_to_le32(mvm_sta->tfd_queue_msk);
 154
 155                         if (flags & STA_MODIFY_QUEUES)
 156                                 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
 157                 } else {
 158                         WARN_ON(flags & STA_MODIFY_QUEUES);
 159                 }
 160         }
 161
 162         switch (sta->deflink.bandwidth) {
 163         case IEEE80211_STA_RX_BW_320:
 164         case IEEE80211_STA_RX_BW_160:
 165                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
 166                 fallthrough;
 167         case IEEE80211_STA_RX_BW_80:
 168                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
 169                 fallthrough;
 170         case IEEE80211_STA_RX_BW_40:
 171                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
 172                 fallthrough;
 173         case IEEE80211_STA_RX_BW_20:
 174                 if (sta->deflink.ht_cap.ht_supported)
 175                         add_sta_cmd.station_flags |=
 176                                 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
 177                 break;
 178         }
 179
 180         switch (sta->deflink.rx_nss) {
 181         case 1:
 182                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
 183                 break;
 184         case 2:
 185                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
 186                 break;
 187         case 3 ... 8:
 188                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
 189                 break;
 190         }
 191
 192         switch (sta->deflink.smps_mode) {
 193         case IEEE80211_SMPS_AUTOMATIC:
 194         case IEEE80211_SMPS_NUM_MODES:
 195                 WARN_ON(1);
 196                 break;
 197         case IEEE80211_SMPS_STATIC:
 198                 /* override NSS */
 199                 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
 200                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
 201                 break;
 202         case IEEE80211_SMPS_DYNAMIC:
 203                 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
 204                 break;
 205         case IEEE80211_SMPS_OFF:
 206                 /* nothing */
 207                 break;
 208         }
 209
 210         if (sta->deflink.ht_cap.ht_supported ||
 211             mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ)
 212                 add_sta_cmd.station_flags_msk |=
 213                         cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
 214                                     STA_FLG_AGG_MPDU_DENS_MSK);
 215
 216         mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink,
 217                                                &mvm_sta->vif->bss_conf,
 218                                                &agg_size);
 219         add_sta_cmd.station_flags |=
 220                 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
 221         add_sta_cmd.station_flags |=
 222                 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
 223
 224         if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)
 225                 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);
 226
 227         if (sta->wme) {
 228                 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;
 229                 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta);
 230                 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;
 231         }
 232
 233         status = ADD_STA_SUCCESS;
 234         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
 235                                           iwl_mvm_add_sta_cmd_size(mvm),
 236                                           &add_sta_cmd, &status);
 237         if (ret)
 238                 return ret;
 239
 240         switch (status & IWL_ADD_STA_STATUS_MASK) {
 241         case ADD_STA_SUCCESS:
 242                 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
 243                 break;
 244         default:
 245                 ret = -EIO;
 246                 IWL_ERR(mvm, "ADD_STA failed\n");
 247                 break;
 248         }
 249
 250         return ret;
 251 }
 252
 253 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)
 254 {
 255         struct iwl_mvm_baid_data *data =
 256                 from_timer(data, t, session_timer);
 257         struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;
 258         struct iwl_mvm_baid_data *ba_data;
 259         struct ieee80211_sta *sta;
 260         struct iwl_mvm_sta *mvm_sta;
 261         unsigned long timeout;
 262         unsigned int sta_id;
 263
 264         rcu_read_lock();
 265
 266         ba_data = rcu_dereference(*rcu_ptr);
 267
 268         if (WARN_ON(!ba_data))
 269                 goto unlock;
 270
 271         if (!ba_data->timeout)
 272                 goto unlock;
 273
 274         timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
 275         if (time_is_after_jiffies(timeout)) {
 276                 mod_timer(&ba_data->session_timer, timeout);
 277                 goto unlock;
 278         }
 279
 280         /* Timer expired */
 281         sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */
 282         sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]);
 283
 284         /*
 285          * sta should be valid unless the following happens:
 286          * The firmware asserts which triggers a reconfig flow, but
 287          * the reconfig fails before we set the pointer to sta into
 288          * the fw_id_to_mac_id pointer table. Mac80211 can't stop
 289          * A-MDPU and hence the timer continues to run. Then, the
 290          * timer expires and sta is NULL.
 291          */
 292         if (IS_ERR_OR_NULL(sta))
 293                 goto unlock;
 294
 295         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 296         ieee80211_rx_ba_timer_expired(mvm_sta->vif,
 297                                       sta->addr, ba_data->tid);
 298 unlock:
 299         rcu_read_unlock();
 300 }
 301
 302 /* Disable aggregations for a bitmap of TIDs for a given station */
 303 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
 304                                         unsigned long disable_agg_tids,
 305                                         bool remove_queue)
 306 {
 307         struct iwl_mvm_add_sta_cmd cmd = {};
 308         struct ieee80211_sta *sta;
 309         struct iwl_mvm_sta *mvmsta;
 310         u32 status;
 311         u8 sta_id;
 312
 313         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 314                 return -EINVAL;
 315
 316         sta_id = mvm->queue_info[queue].ra_sta_id;
 317
 318         rcu_read_lock();
 319
 320         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
 321
 322         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
 323                 rcu_read_unlock();
 324                 return -EINVAL;
 325         }
 326
 327         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 328
 329         mvmsta->tid_disable_agg |= disable_agg_tids;
 330
 331         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
 332         cmd.sta_id = mvmsta->deflink.sta_id;
 333         cmd.add_modify = STA_MODE_MODIFY;
 334         cmd.modify_mask = STA_MODIFY_QUEUES;
 335         if (disable_agg_tids)
 336                 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
 337         if (remove_queue)
 338                 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
 339         cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
 340         cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
 341
 342         rcu_read_unlock();
 343
 344         /* Notify FW of queue removal from the STA queues */
 345         status = ADD_STA_SUCCESS;
 346         return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
 347                                            iwl_mvm_add_sta_cmd_size(mvm),
 348                                            &cmd, &status);
 349 }
 350
 351 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 352                                int sta_id, u16 *queueptr, u8 tid)
 353 {
 354         int queue = *queueptr;
 355         struct iwl_scd_txq_cfg_cmd cmd = {
 356                 .scd_queue = queue,
 357                 .action = SCD_CFG_DISABLE_QUEUE,
 358         };
 359         int ret;
 360
 361         lockdep_assert_held(&mvm->mutex);
 362
 363         if (iwl_mvm_has_new_tx_api(mvm)) {
 364                 if (mvm->sta_remove_requires_queue_remove) {
 365                         u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
 366                                              SCD_QUEUE_CONFIG_CMD);
 367                         struct iwl_scd_queue_cfg_cmd remove_cmd = {
 368                                 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),
 369                                 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)),
 370                         };
 371
 372                         if (tid == IWL_MAX_TID_COUNT)
 373                                 tid = IWL_MGMT_TID;
 374
 375                         remove_cmd.u.remove.tid = cpu_to_le32(tid);
 376
 377                         ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,
 378                                                    sizeof(remove_cmd),
 379                                                    &remove_cmd);
 380                 } else {
 381                         ret = 0;
 382                 }
 383
 384                 iwl_trans_txq_free(mvm->trans, queue);
 385                 *queueptr = IWL_MVM_INVALID_QUEUE;
 386
 387                 return ret;
 388         }
 389
 390         if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0))
 391                 return 0;
 392
 393         mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
 394
 395         cmd.action = mvm->queue_info[queue].tid_bitmap ?
 396                 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
 397         if (cmd.action == SCD_CFG_DISABLE_QUEUE)
 398                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
 399
 400         IWL_DEBUG_TX_QUEUES(mvm,
 401                             "Disabling TXQ #%d tids=0x%x\n",
 402                             queue,
 403                             mvm->queue_info[queue].tid_bitmap);
 404
 405         /* If the queue is still enabled - nothing left to do in this func */
 406         if (cmd.action == SCD_CFG_ENABLE_QUEUE)
 407                 return 0;
 408
 409         cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
 410         cmd.tid = mvm->queue_info[queue].txq_tid;
 411
 412         /* Make sure queue info is correct even though we overwrite it */
 413         WARN(mvm->queue_info[queue].tid_bitmap,
 414              "TXQ #%d info out-of-sync - tids=0x%x\n",
 415              queue, mvm->queue_info[queue].tid_bitmap);
 416
 417         /* If we are here - the queue is freed and we can zero out these vals */
 418         mvm->queue_info[queue].tid_bitmap = 0;
 419
 420         if (sta) {
 421                 struct iwl_mvm_txq *mvmtxq =
 422                         iwl_mvm_txq_from_tid(sta, tid);
 423
 424                 spin_lock_bh(&mvm->add_stream_lock);
 425                 list_del_init(&mvmtxq->list);
 426                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
 427                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
 428                 spin_unlock_bh(&mvm->add_stream_lock);
 429         }
 430
 431         /* Regardless if this is a reserved TXQ for a STA - mark it as false */
 432         mvm->queue_info[queue].reserved = false;
 433
 434         iwl_trans_txq_disable(mvm->trans, queue, false);
 435         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0,
 436                                    sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
 437
 438         if (ret)
 439                 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
 440                         queue, ret);
 441         return ret;
 442 }
 443
 444 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
 445 {
 446         struct ieee80211_sta *sta;
 447         struct iwl_mvm_sta *mvmsta;
 448         unsigned long tid_bitmap;
 449         unsigned long agg_tids = 0;
 450         u8 sta_id;
 451         int tid;
 452
 453         lockdep_assert_held(&mvm->mutex);
 454
 455         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 456                 return -EINVAL;
 457
 458         sta_id = mvm->queue_info[queue].ra_sta_id;
 459         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
 460
 461         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 462                                         lockdep_is_held(&mvm->mutex));
 463
 464         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 465                 return -EINVAL;
 466
 467         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 468
 469         spin_lock_bh(&mvmsta->lock);
 470         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
 471                 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
 472                         agg_tids |= BIT(tid);
 473         }
 474         spin_unlock_bh(&mvmsta->lock);
 475
 476         return agg_tids;
 477 }
 478
 479 /*
 480  * Remove a queue from a station's resources.
 481  * Note that this only marks as free. It DOESN'T delete a BA agreement, and
 482  * doesn't disable the queue
 483  */
 484 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
 485 {
 486         struct ieee80211_sta *sta;
 487         struct iwl_mvm_sta *mvmsta;
 488         unsigned long tid_bitmap;
 489         unsigned long disable_agg_tids = 0;
 490         u8 sta_id;
 491         int tid;
 492
 493         lockdep_assert_held(&mvm->mutex);
 494
 495         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 496                 return -EINVAL;
 497
 498         sta_id = mvm->queue_info[queue].ra_sta_id;
 499         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
 500
 501         rcu_read_lock();
 502
 503         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
 504
 505         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
 506                 rcu_read_unlock();
 507                 return 0;
 508         }
 509
 510         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 511
 512         spin_lock_bh(&mvmsta->lock);
 513         /* Unmap MAC queues and TIDs from this queue */
 514         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
 515                 struct iwl_mvm_txq *mvmtxq =
 516                         iwl_mvm_txq_from_tid(sta, tid);
 517
 518                 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
 519                         disable_agg_tids |= BIT(tid);
 520                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
 521
 522                 spin_lock_bh(&mvm->add_stream_lock);
 523                 list_del_init(&mvmtxq->list);
 524                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
 525                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
 526                 spin_unlock_bh(&mvm->add_stream_lock);
 527         }
 528
 529         mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
 530         spin_unlock_bh(&mvmsta->lock);
 531
 532         rcu_read_unlock();
 533
 534         /*
 535          * The TX path may have been using this TXQ_ID from the tid_data,
 536          * so make sure it's no longer running so that we can safely reuse
 537          * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE
 538          * above, but nothing guarantees we've stopped using them. Thus,
 539          * without this, we could get to iwl_mvm_disable_txq() and remove
 540          * the queue while still sending frames to it.
 541          */
 542         synchronize_net();
 543
 544         return disable_agg_tids;
 545 }
 546
 547 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,
 548                                        struct ieee80211_sta *old_sta,
 549                                        u8 new_sta_id)
 550 {
 551         struct iwl_mvm_sta *mvmsta;
 552         u8 sta_id, tid;
 553         unsigned long disable_agg_tids = 0;
 554         bool same_sta;
 555         u16 queue_tmp = queue;
 556         int ret;
 557
 558         lockdep_assert_held(&mvm->mutex);
 559
 560         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 561                 return -EINVAL;
 562
 563         sta_id = mvm->queue_info[queue].ra_sta_id;
 564         tid = mvm->queue_info[queue].txq_tid;
 565
 566         same_sta = sta_id == new_sta_id;
 567
 568         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 569         if (WARN_ON(!mvmsta))
 570                 return -EINVAL;
 571
 572         disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
 573         /* Disable the queue */
 574         if (disable_agg_tids)
 575                 iwl_mvm_invalidate_sta_queue(mvm, queue,
 576                                              disable_agg_tids, false);
 577
 578         ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid);
 579         if (ret) {
 580                 IWL_ERR(mvm,
 581                         "Failed to free inactive queue %d (ret=%d)\n",
 582                         queue, ret);
 583
 584                 return ret;
 585         }
 586
 587         /* If TXQ is allocated to another STA, update removal in FW */
 588         if (!same_sta)
 589                 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
 590
 591         return 0;
 592 }
 593
 594 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
 595                                     unsigned long tfd_queue_mask, u8 ac)
 596 {
 597         int queue = 0;
 598         u8 ac_to_queue[IEEE80211_NUM_ACS];
 599         int i;
 600
 601         /*
 602          * This protects us against grabbing a queue that's being reconfigured
 603          * by the inactivity checker.
 604          */
 605         lockdep_assert_held(&mvm->mutex);
 606
 607         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 608                 return -EINVAL;
 609
 610         memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
 611
 612         /* See what ACs the existing queues for this STA have */
 613         for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
 614                 /* Only DATA queues can be shared */
 615                 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
 616                     i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
 617                         continue;
 618
 619                 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
 620         }
 621
 622         /*
 623          * The queue to share is chosen only from DATA queues as follows (in
 624          * descending priority):
 625          * 1. An AC_BE queue
 626          * 2. Same AC queue
 627          * 3. Highest AC queue that is lower than new AC
 628          * 4. Any existing AC (there always is at least 1 DATA queue)
 629          */
 630
 631         /* Priority 1: An AC_BE queue */
 632         if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
 633                 queue = ac_to_queue[IEEE80211_AC_BE];
 634         /* Priority 2: Same AC queue */
 635         else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 636                 queue = ac_to_queue[ac];
 637         /* Priority 3a: If new AC is VO and VI exists - use VI */
 638         else if (ac == IEEE80211_AC_VO &&
 639                  ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
 640                 queue = ac_to_queue[IEEE80211_AC_VI];
 641         /* Priority 3b: No BE so only AC less than the new one is BK */
 642         else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
 643                 queue = ac_to_queue[IEEE80211_AC_BK];
 644         /* Priority 4a: No BE nor BK - use VI if exists */
 645         else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
 646                 queue = ac_to_queue[IEEE80211_AC_VI];
 647         /* Priority 4b: No BE, BK nor VI - use VO if exists */
 648         else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
 649                 queue = ac_to_queue[IEEE80211_AC_VO];
 650
 651         /* Make sure queue found (or not) is legal */
 652         if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
 653             !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
 654             (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
 655                 IWL_ERR(mvm, "No DATA queues available to share\n");
 656                 return -ENOSPC;
 657         }
 658
 659         return queue;
 660 }
 661
 662 /* Re-configure the SCD for a queue that has already been configured */
 663 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo,
 664                                 int sta_id, int tid, int frame_limit, u16 ssn)
 665 {
 666         struct iwl_scd_txq_cfg_cmd cmd = {
 667                 .scd_queue = queue,
 668                 .action = SCD_CFG_ENABLE_QUEUE,
 669                 .window = frame_limit,
 670                 .sta_id = sta_id,
 671                 .ssn = cpu_to_le16(ssn),
 672                 .tx_fifo = fifo,
 673                 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
 674                               queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
 675                 .tid = tid,
 676         };
 677         int ret;
 678
 679         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 680                 return -EINVAL;
 681
 682         if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
 683                  "Trying to reconfig unallocated queue %d\n", queue))
 684                 return -ENXIO;
 685
 686         IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
 687
 688         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 689         WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
 690                   queue, fifo, ret);
 691
 692         return ret;
 693 }
 694
 695 /*
 696  * If a given queue has a higher AC than the TID stream that is being compared
 697  * to, the queue needs to be redirected to the lower AC. This function does that
 698  * in such a case, otherwise - if no redirection required - it does nothing,
 699  * unless the %force param is true.
 700  */
 701 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid,
 702                                   int ac, int ssn, unsigned int wdg_timeout,
 703                                   bool force, struct iwl_mvm_txq *txq)
 704 {
 705         struct iwl_scd_txq_cfg_cmd cmd = {
 706                 .scd_queue = queue,
 707                 .action = SCD_CFG_DISABLE_QUEUE,
 708         };
 709         bool shared_queue;
 710         int ret;
 711
 712         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 713                 return -EINVAL;
 714
 715         /*
 716          * If the AC is lower than current one - FIFO needs to be redirected to
 717          * the lowest one of the streams in the queue. Check if this is needed
 718          * here.
 719          * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
 720          * value 3 and VO with value 0, so to check if ac X is lower than ac Y
 721          * we need to check if the numerical value of X is LARGER than of Y.
 722          */
 723         if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
 724                 IWL_DEBUG_TX_QUEUES(mvm,
 725                                     "No redirection needed on TXQ #%d\n",
 726                                     queue);
 727                 return 0;
 728         }
 729
 730         cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
 731         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
 732         cmd.tid = mvm->queue_info[queue].txq_tid;
 733         shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1;
 734
 735         IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
 736                             queue, iwl_mvm_ac_to_tx_fifo[ac]);
 737
 738         /* Stop the queue and wait for it to empty */
 739         set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
 740
 741         ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));
 742         if (ret) {
 743                 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
 744                         queue);
 745                 ret = -EIO;
 746                 goto out;
 747         }
 748
 749         /* Before redirecting the queue we need to de-activate it */
 750         iwl_trans_txq_disable(mvm->trans, queue, false);
 751         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 752         if (ret)
 753                 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
 754                         ret);
 755
 756         /* Make sure the SCD wrptr is correctly set before reconfiguring */
 757         iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
 758
 759         /* Update the TID "owner" of the queue */
 760         mvm->queue_info[queue].txq_tid = tid;
 761
 762         /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
 763
 764         /* Redirect to lower AC */
 765         iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
 766                              cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);
 767
 768         /* Update AC marking of the queue */
 769         mvm->queue_info[queue].mac80211_ac = ac;
 770
 771         /*
 772          * Mark queue as shared in transport if shared
 773          * Note this has to be done after queue enablement because enablement
 774          * can also set this value, and there is no indication there to shared
 775          * queues
 776          */
 777         if (shared_queue)
 778                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
 779
 780 out:
 781         /* Continue using the queue */
 782         clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
 783
 784         return ret;
 785 }
 786
 787 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id,
 788                                    u8 minq, u8 maxq)
 789 {
 790         int i;
 791
 792         lockdep_assert_held(&mvm->mutex);
 793
 794         if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues,
 795                  "max queue %d >= num_of_queues (%d)", maxq,
 796                  mvm->trans->trans_cfg->base_params->num_of_queues))
 797                 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1;
 798
 799         /* This should not be hit with new TX path */
 800         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 801                 return -ENOSPC;
 802
 803         /* Start by looking for a free queue */
 804         for (i = minq; i <= maxq; i++)
 805                 if (mvm->queue_info[i].tid_bitmap == 0 &&
 806                     mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
 807                         return i;
 808
 809         return -ENOSPC;
 810 }
 811
 812 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta)
 813 {
 814         int max_size = IWL_DEFAULT_QUEUE_SIZE;
 815         unsigned int link_id;
 816
 817         /* this queue isn't used for traffic (cab_queue) */
 818         if (!sta)
 819                 return IWL_MGMT_QUEUE_SIZE;
 820
 821         rcu_read_lock();
 822
 823         for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {
 824                 struct ieee80211_link_sta *link =
 825                         rcu_dereference(sta->link[link_id]);
 826
 827                 if (!link)
 828                         continue;
 829
 830                 /* support for 512 ba size */
 831                 if (link->eht_cap.has_eht &&
 832                     max_size < IWL_DEFAULT_QUEUE_SIZE_EHT)
 833                         max_size = IWL_DEFAULT_QUEUE_SIZE_EHT;
 834
 835                 /* support for 256 ba size */
 836                 if (link->he_cap.has_he &&
 837                     max_size < IWL_DEFAULT_QUEUE_SIZE_HE)
 838                         max_size = IWL_DEFAULT_QUEUE_SIZE_HE;
 839         }
 840
 841         rcu_read_unlock();
 842         return max_size;
 843 }
 844
 845 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm,
 846                             struct ieee80211_sta *sta,
 847                             u8 sta_id, u8 tid, unsigned int timeout)
 848 {
 849         int queue, size;
 850         u32 sta_mask = 0;
 851
 852         if (tid == IWL_MAX_TID_COUNT) {
 853                 tid = IWL_MGMT_TID;
 854                 size = max_t(u32, IWL_MGMT_QUEUE_SIZE,
 855                              mvm->trans->cfg->min_txq_size);
 856         } else {
 857                 size = iwl_mvm_get_queue_size(sta);
 858         }
 859
 860         /* take the min with bc tbl entries allowed */
 861         size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16));
 862
 863         /* size needs to be power of 2 values for calculating read/write pointers */
 864         size = rounddown_pow_of_two(size);
 865
 866         if (sta) {
 867                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 868                 struct ieee80211_link_sta *link_sta;
 869                 unsigned int link_id;
 870
 871                 rcu_read_lock();
 872                 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {
 873                         struct iwl_mvm_link_sta *link =
 874                                 rcu_dereference_protected(mvmsta->link[link_id],
 875                                                           lockdep_is_held(&mvm->mutex));
 876
 877                         if (!link)
 878                                 continue;
 879
 880                         sta_mask |= BIT(link->sta_id);
 881                 }
 882                 rcu_read_unlock();
 883         } else {
 884                 sta_mask |= BIT(sta_id);
 885         }
 886
 887         if (!sta_mask)
 888                 return -EINVAL;
 889
 890         do {
 891                 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
 892                                             tid, size, timeout);
 893
 894                 if (queue < 0)
 895                         IWL_DEBUG_TX_QUEUES(mvm,
 896                                             "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n",
 897                                             size, sta_mask, tid, queue);
 898                 size /= 2;
 899         } while (queue < 0 && size >= 16);
 900
 901         if (queue < 0)
 902                 return queue;
 903
 904         IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
 905                             queue, sta_mask, tid);
 906
 907         return queue;
 908 }
 909
 910 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
 911                                         struct ieee80211_sta *sta, u8 ac,
 912                                         int tid)
 913 {
 914         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 915         struct iwl_mvm_txq *mvmtxq =
 916                 iwl_mvm_txq_from_tid(sta, tid);
 917         unsigned int wdg_timeout =
 918                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
 919         int queue = -1;
 920
 921         lockdep_assert_held(&mvm->mutex);
 922
 923         IWL_DEBUG_TX_QUEUES(mvm,
 924                             "Allocating queue for sta %d on tid %d\n",
 925                             mvmsta->deflink.sta_id, tid);
 926         queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
 927                                         tid, wdg_timeout);
 928         if (queue < 0)
 929                 return queue;
 930
 931         mvmtxq->txq_id = queue;
 932         mvm->tvqm_info[queue].txq_tid = tid;
 933         mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
 934
 935         IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
 936
 937         spin_lock_bh(&mvmsta->lock);
 938         mvmsta->tid_data[tid].txq_id = queue;
 939         spin_unlock_bh(&mvmsta->lock);
 940
 941         return 0;
 942 }
 943
 944 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
 945                                        struct ieee80211_sta *sta,
 946                                        int queue, u8 sta_id, u8 tid)
 947 {
 948         bool enable_queue = true;
 949
 950         /* Make sure this TID isn't already enabled */
 951         if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
 952                 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
 953                         queue, tid);
 954                 return false;
 955         }
 956
 957         /* Update mappings and refcounts */
 958         if (mvm->queue_info[queue].tid_bitmap)
 959                 enable_queue = false;
 960
 961         mvm->queue_info[queue].tid_bitmap |= BIT(tid);
 962         mvm->queue_info[queue].ra_sta_id = sta_id;
 963
 964         if (enable_queue) {
 965                 if (tid != IWL_MAX_TID_COUNT)
 966                         mvm->queue_info[queue].mac80211_ac =
 967                                 tid_to_mac80211_ac[tid];
 968                 else
 969                         mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
 970
 971                 mvm->queue_info[queue].txq_tid = tid;
 972         }
 973
 974         if (sta) {
 975                 struct iwl_mvm_txq *mvmtxq =
 976                         iwl_mvm_txq_from_tid(sta, tid);
 977
 978                 mvmtxq->txq_id = queue;
 979         }
 980
 981         IWL_DEBUG_TX_QUEUES(mvm,
 982                             "Enabling TXQ #%d tids=0x%x\n",
 983                             queue, mvm->queue_info[queue].tid_bitmap);
 984
 985         return enable_queue;
 986 }
 987
 988 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 989                                int queue, u16 ssn,
 990                                const struct iwl_trans_txq_scd_cfg *cfg,
 991                                unsigned int wdg_timeout)
 992 {
 993         struct iwl_scd_txq_cfg_cmd cmd = {
 994                 .scd_queue = queue,
 995                 .action = SCD_CFG_ENABLE_QUEUE,
 996                 .window = cfg->frame_limit,
 997                 .sta_id = cfg->sta_id,
 998                 .ssn = cpu_to_le16(ssn),
 999                 .tx_fifo = cfg->fifo,
1000                 .aggregate = cfg->aggregate,
1001                 .tid = cfg->tid,
1002         };
1003         bool inc_ssn;
1004
1005         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1006                 return false;
1007
1008         /* Send the enabling command if we need to */
1009         if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
1010                 return false;
1011
1012         inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
1013                                            NULL, wdg_timeout);
1014         if (inc_ssn)
1015                 le16_add_cpu(&cmd.ssn, 1);
1016
1017         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1018              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1019
1020         return inc_ssn;
1021 }
1022
1023 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1024 {
1025         struct iwl_scd_txq_cfg_cmd cmd = {
1026                 .scd_queue = queue,
1027                 .action = SCD_CFG_UPDATE_QUEUE_TID,
1028         };
1029         int tid;
1030         unsigned long tid_bitmap;
1031         int ret;
1032
1033         lockdep_assert_held(&mvm->mutex);
1034
1035         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1036                 return;
1037
1038         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1039
1040         if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1041                 return;
1042
1043         /* Find any TID for queue */
1044         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1045         cmd.tid = tid;
1046         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1047
1048         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1049         if (ret) {
1050                 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1051                         queue, ret);
1052                 return;
1053         }
1054
1055         mvm->queue_info[queue].txq_tid = tid;
1056         IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1057                             queue, tid);
1058 }
1059
1060 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1061 {
1062         struct ieee80211_sta *sta;
1063         struct iwl_mvm_sta *mvmsta;
1064         u8 sta_id;
1065         int tid = -1;
1066         unsigned long tid_bitmap;
1067         unsigned int wdg_timeout;
1068         int ssn;
1069         int ret = true;
1070
1071         /* queue sharing is disabled on new TX path */
1072         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1073                 return;
1074
1075         lockdep_assert_held(&mvm->mutex);
1076
1077         sta_id = mvm->queue_info[queue].ra_sta_id;
1078         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1079
1080         /* Find TID for queue, and make sure it is the only one on the queue */
1081         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1082         if (tid_bitmap != BIT(tid)) {
1083                 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1084                         queue, tid_bitmap);
1085                 return;
1086         }
1087
1088         IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1089                             tid);
1090
1091         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1092                                         lockdep_is_held(&mvm->mutex));
1093
1094         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1095                 return;
1096
1097         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1098         wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1099
1100         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1101
1102         ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1103                                      tid_to_mac80211_ac[tid], ssn,
1104                                      wdg_timeout, true,
1105                                      iwl_mvm_txq_from_tid(sta, tid));
1106         if (ret) {
1107                 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1108                 return;
1109         }
1110
1111         /* If aggs should be turned back on - do it */
1112         if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1113                 struct iwl_mvm_add_sta_cmd cmd = {0};
1114
1115                 mvmsta->tid_disable_agg &= ~BIT(tid);
1116
1117                 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1118                 cmd.sta_id = mvmsta->deflink.sta_id;
1119                 cmd.add_modify = STA_MODE_MODIFY;
1120                 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1121                 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1122                 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1123
1124                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1125                                            iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1126                 if (!ret) {
1127                         IWL_DEBUG_TX_QUEUES(mvm,
1128                                             "TXQ #%d is now aggregated again\n",
1129                                             queue);
1130
1131                         /* Mark queue intenally as aggregating again */
1132                         iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1133                 }
1134         }
1135
1136         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1137 }
1138
1139 /*
1140  * Remove inactive TIDs of a given queue.
1141  * If all queue TIDs are inactive - mark the queue as inactive
1142  * If only some the queue TIDs are inactive - unmap them from the queue
1143  *
1144  * Returns %true if all TIDs were removed and the queue could be reused.
1145  */
1146 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1147                                          struct iwl_mvm_sta *mvmsta, int queue,
1148                                          unsigned long tid_bitmap,
1149                                          unsigned long *unshare_queues,
1150                                          unsigned long *changetid_queues)
1151 {
1152         unsigned int tid;
1153
1154         lockdep_assert_held(&mvmsta->lock);
1155         lockdep_assert_held(&mvm->mutex);
1156
1157         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1158                 return false;
1159
1160         /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1161         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1162                 /* If some TFDs are still queued - don't mark TID as inactive */
1163                 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1164                         tid_bitmap &= ~BIT(tid);
1165
1166                 /* Don't mark as inactive any TID that has an active BA */
1167                 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1168                         tid_bitmap &= ~BIT(tid);
1169         }
1170
1171         /* If all TIDs in the queue are inactive - return it can be reused */
1172         if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1173                 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1174                 return true;
1175         }
1176
1177         /*
1178          * If we are here, this is a shared queue and not all TIDs timed-out.
1179          * Remove the ones that did.
1180          */
1181         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1182                 u16 q_tid_bitmap;
1183
1184                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1185                 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1186
1187                 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1188
1189                 /*
1190                  * We need to take into account a situation in which a TXQ was
1191                  * allocated to TID x, and then turned shared by adding TIDs y
1192                  * and z. If TID x becomes inactive and is removed from the TXQ,
1193                  * ownership must be given to one of the remaining TIDs.
1194                  * This is mainly because if TID x continues - a new queue can't
1195                  * be allocated for it as long as it is an owner of another TXQ.
1196                  *
1197                  * Mark this queue in the right bitmap, we'll send the command
1198                  * to the firmware later.
1199                  */
1200                 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1201                         set_bit(queue, changetid_queues);
1202
1203                 IWL_DEBUG_TX_QUEUES(mvm,
1204                                     "Removing inactive TID %d from shared Q:%d\n",
1205                                     tid, queue);
1206         }
1207
1208         IWL_DEBUG_TX_QUEUES(mvm,
1209                             "TXQ #%d left with tid bitmap 0x%x\n", queue,
1210                             mvm->queue_info[queue].tid_bitmap);
1211
1212         /*
1213          * There may be different TIDs with the same mac queues, so make
1214          * sure all TIDs have existing corresponding mac queues enabled
1215          */
1216         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1217
1218         /* If the queue is marked as shared - "unshare" it */
1219         if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1220             mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1221                 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1222                                     queue);
1223                 set_bit(queue, unshare_queues);
1224         }
1225
1226         return false;
1227 }
1228
1229 /*
1230  * Check for inactivity - this includes checking if any queue
1231  * can be unshared and finding one (and only one) that can be
1232  * reused.
1233  * This function is also invoked as a sort of clean-up task,
1234  * in which case @alloc_for_sta is IWL_MVM_INVALID_STA.
1235  *
1236  * Returns the queue number, or -ENOSPC.
1237  */
1238 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1239 {
1240         unsigned long now = jiffies;
1241         unsigned long unshare_queues = 0;
1242         unsigned long changetid_queues = 0;
1243         int i, ret, free_queue = -ENOSPC;
1244         struct ieee80211_sta *queue_owner  = NULL;
1245
1246         lockdep_assert_held(&mvm->mutex);
1247
1248         if (iwl_mvm_has_new_tx_api(mvm))
1249                 return -ENOSPC;
1250
1251         rcu_read_lock();
1252
1253         /* we skip the CMD queue below by starting at 1 */
1254         BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1255
1256         for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1257                 struct ieee80211_sta *sta;
1258                 struct iwl_mvm_sta *mvmsta;
1259                 u8 sta_id;
1260                 int tid;
1261                 unsigned long inactive_tid_bitmap = 0;
1262                 unsigned long queue_tid_bitmap;
1263
1264                 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1265                 if (!queue_tid_bitmap)
1266                         continue;
1267
1268                 /* If TXQ isn't in active use anyway - nothing to do here... */
1269                 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1270                     mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1271                         continue;
1272
1273                 /* Check to see if there are inactive TIDs on this queue */
1274                 for_each_set_bit(tid, &queue_tid_bitmap,
1275                                  IWL_MAX_TID_COUNT + 1) {
1276                         if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1277                                        IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1278                                 continue;
1279
1280                         inactive_tid_bitmap |= BIT(tid);
1281                 }
1282
1283                 /* If all TIDs are active - finish check on this queue */
1284                 if (!inactive_tid_bitmap)
1285                         continue;
1286
1287                 /*
1288                  * If we are here - the queue hadn't been served recently and is
1289                  * in use
1290                  */
1291
1292                 sta_id = mvm->queue_info[i].ra_sta_id;
1293                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1294
1295                 /*
1296                  * If the STA doesn't exist anymore, it isn't an error. It could
1297                  * be that it was removed since getting the queues, and in this
1298                  * case it should've inactivated its queues anyway.
1299                  */
1300                 if (IS_ERR_OR_NULL(sta))
1301                         continue;
1302
1303                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1304
1305                 spin_lock_bh(&mvmsta->lock);
1306                 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1307                                                    inactive_tid_bitmap,
1308                                                    &unshare_queues,
1309                                                    &changetid_queues);
1310                 if (ret && free_queue < 0) {
1311                         queue_owner = sta;
1312                         free_queue = i;
1313                 }
1314                 /* only unlock sta lock - we still need the queue info lock */
1315                 spin_unlock_bh(&mvmsta->lock);
1316         }
1317
1318
1319         /* Reconfigure queues requiring reconfiguation */
1320         for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1321                 iwl_mvm_unshare_queue(mvm, i);
1322         for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1323                 iwl_mvm_change_queue_tid(mvm, i);
1324
1325         rcu_read_unlock();
1326
1327         if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) {
1328                 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1329                                                   alloc_for_sta);
1330                 if (ret)
1331                         return ret;
1332         }
1333
1334         return free_queue;
1335 }
1336
1337 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1338                                    struct ieee80211_sta *sta, u8 ac, int tid)
1339 {
1340         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1341         struct iwl_trans_txq_scd_cfg cfg = {
1342                 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1343                 .sta_id = mvmsta->deflink.sta_id,
1344                 .tid = tid,
1345                 .frame_limit = IWL_FRAME_LIMIT,
1346         };
1347         unsigned int wdg_timeout =
1348                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1349         int queue = -1;
1350         u16 queue_tmp;
1351         unsigned long disable_agg_tids = 0;
1352         enum iwl_mvm_agg_state queue_state;
1353         bool shared_queue = false, inc_ssn;
1354         int ssn;
1355         unsigned long tfd_queue_mask;
1356         int ret;
1357
1358         lockdep_assert_held(&mvm->mutex);
1359
1360         if (iwl_mvm_has_new_tx_api(mvm))
1361                 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1362
1363         spin_lock_bh(&mvmsta->lock);
1364         tfd_queue_mask = mvmsta->tfd_queue_msk;
1365         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1366         spin_unlock_bh(&mvmsta->lock);
1367
1368         if (tid == IWL_MAX_TID_COUNT) {
1369                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1370                                                 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1371                                                 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1372                 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1373                         IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1374                                             queue);
1375
1376                 /* If no such queue is found, we'll use a DATA queue instead */
1377         }
1378
1379         if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1380             (mvm->queue_info[mvmsta->reserved_queue].status ==
1381                         IWL_MVM_QUEUE_RESERVED)) {
1382                 queue = mvmsta->reserved_queue;
1383                 mvm->queue_info[queue].reserved = true;
1384                 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1385         }
1386
1387         if (queue < 0)
1388                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1389                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1390                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1391         if (queue < 0) {
1392                 /* try harder - perhaps kill an inactive queue */
1393                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1394         }
1395
1396         /* No free queue - we'll have to share */
1397         if (queue <= 0) {
1398                 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1399                 if (queue > 0) {
1400                         shared_queue = true;
1401                         mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1402                 }
1403         }
1404
1405         /*
1406          * Mark TXQ as ready, even though it hasn't been fully configured yet,
1407          * to make sure no one else takes it.
1408          * This will allow avoiding re-acquiring the lock at the end of the
1409          * configuration. On error we'll mark it back as free.
1410          */
1411         if (queue > 0 && !shared_queue)
1412                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1413
1414         /* This shouldn't happen - out of queues */
1415         if (WARN_ON(queue <= 0)) {
1416                 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1417                         tid, cfg.sta_id);
1418                 return queue;
1419         }
1420
1421         /*
1422          * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1423          * but for configuring the SCD to send A-MPDUs we need to mark the queue
1424          * as aggregatable.
1425          * Mark all DATA queues as allowing to be aggregated at some point
1426          */
1427         cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1428                          queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1429
1430         IWL_DEBUG_TX_QUEUES(mvm,
1431                             "Allocating %squeue #%d to sta %d on tid %d\n",
1432                             shared_queue ? "shared " : "", queue,
1433                             mvmsta->deflink.sta_id, tid);
1434
1435         if (shared_queue) {
1436                 /* Disable any open aggs on this queue */
1437                 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1438
1439                 if (disable_agg_tids) {
1440                         IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1441                                             queue);
1442                         iwl_mvm_invalidate_sta_queue(mvm, queue,
1443                                                      disable_agg_tids, false);
1444                 }
1445         }
1446
1447         inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1448
1449         /*
1450          * Mark queue as shared in transport if shared
1451          * Note this has to be done after queue enablement because enablement
1452          * can also set this value, and there is no indication there to shared
1453          * queues
1454          */
1455         if (shared_queue)
1456                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1457
1458         spin_lock_bh(&mvmsta->lock);
1459         /*
1460          * This looks racy, but it is not. We have only one packet for
1461          * this ra/tid in our Tx path since we stop the Qdisc when we
1462          * need to allocate a new TFD queue.
1463          */
1464         if (inc_ssn) {
1465                 mvmsta->tid_data[tid].seq_number += 0x10;
1466                 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1467         }
1468         mvmsta->tid_data[tid].txq_id = queue;
1469         mvmsta->tfd_queue_msk |= BIT(queue);
1470         queue_state = mvmsta->tid_data[tid].state;
1471
1472         if (mvmsta->reserved_queue == queue)
1473                 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1474         spin_unlock_bh(&mvmsta->lock);
1475
1476         if (!shared_queue) {
1477                 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1478                 if (ret)
1479                         goto out_err;
1480
1481                 /* If we need to re-enable aggregations... */
1482                 if (queue_state == IWL_AGG_ON) {
1483                         ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1484                         if (ret)
1485                                 goto out_err;
1486                 }
1487         } else {
1488                 /* Redirect queue, if needed */
1489                 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1490                                              wdg_timeout, false,
1491                                              iwl_mvm_txq_from_tid(sta, tid));
1492                 if (ret)
1493                         goto out_err;
1494         }
1495
1496         return 0;
1497
1498 out_err:
1499         queue_tmp = queue;
1500         iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1501
1502         return ret;
1503 }
1504
1505 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1506 {
1507         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1508                                            add_stream_wk);
1509
1510         mutex_lock(&mvm->mutex);
1511
1512         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1513
1514         while (!list_empty(&mvm->add_stream_txqs)) {
1515                 struct iwl_mvm_txq *mvmtxq;
1516                 struct ieee80211_txq *txq;
1517                 u8 tid;
1518
1519                 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1520                                           struct iwl_mvm_txq, list);
1521
1522                 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1523                                    drv_priv);
1524                 tid = txq->tid;
1525                 if (tid == IEEE80211_NUM_TIDS)
1526                         tid = IWL_MAX_TID_COUNT;
1527
1528                 /*
1529                  * We can't really do much here, but if this fails we can't
1530                  * transmit anyway - so just don't transmit the frame etc.
1531                  * and let them back up ... we've tried our best to allocate
1532                  * a queue in the function itself.
1533                  */
1534                 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1535                         spin_lock_bh(&mvm->add_stream_lock);
1536                         list_del_init(&mvmtxq->list);
1537                         spin_unlock_bh(&mvm->add_stream_lock);
1538                         continue;
1539                 }
1540
1541                 /* now we're ready, any remaining races/concurrency will be
1542                  * handled in iwl_mvm_mac_itxq_xmit()
1543                  */
1544                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1545
1546                 local_bh_disable();
1547                 spin_lock(&mvm->add_stream_lock);
1548                 list_del_init(&mvmtxq->list);
1549                 spin_unlock(&mvm->add_stream_lock);
1550
1551                 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1552                 local_bh_enable();
1553         }
1554
1555         mutex_unlock(&mvm->mutex);
1556 }
1557
1558 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1559                                       struct ieee80211_sta *sta,
1560                                       enum nl80211_iftype vif_type)
1561 {
1562         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1563         int queue;
1564
1565         /* queue reserving is disabled on new TX path */
1566         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1567                 return 0;
1568
1569         /* run the general cleanup/unsharing of queues */
1570         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1571
1572         /* Make sure we have free resources for this STA */
1573         if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1574             !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1575             (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1576              IWL_MVM_QUEUE_FREE))
1577                 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1578         else
1579                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1580                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1581                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1582         if (queue < 0) {
1583                 /* try again - this time kick out a queue if needed */
1584                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1585                 if (queue < 0) {
1586                         IWL_ERR(mvm, "No available queues for new station\n");
1587                         return -ENOSPC;
1588                 }
1589         }
1590         mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1591
1592         mvmsta->reserved_queue = queue;
1593
1594         IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1595                             queue, mvmsta->deflink.sta_id);
1596
1597         return 0;
1598 }
1599
1600 /*
1601  * In DQA mode, after a HW restart the queues should be allocated as before, in
1602  * order to avoid race conditions when there are shared queues. This function
1603  * does the re-mapping and queue allocation.
1604  *
1605  * Note that re-enabling aggregations isn't done in this function.
1606  */
1607 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1608                                           struct ieee80211_sta *sta)
1609 {
1610         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1611         unsigned int wdg =
1612                 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1613         int i;
1614         struct iwl_trans_txq_scd_cfg cfg = {
1615                 .sta_id = mvm_sta->deflink.sta_id,
1616                 .frame_limit = IWL_FRAME_LIMIT,
1617         };
1618
1619         /* Make sure reserved queue is still marked as such (if allocated) */
1620         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1621                 mvm->queue_info[mvm_sta->reserved_queue].status =
1622                         IWL_MVM_QUEUE_RESERVED;
1623
1624         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1625                 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1626                 int txq_id = tid_data->txq_id;
1627                 int ac;
1628
1629                 if (txq_id == IWL_MVM_INVALID_QUEUE)
1630                         continue;
1631
1632                 ac = tid_to_mac80211_ac[i];
1633
1634                 if (iwl_mvm_has_new_tx_api(mvm)) {
1635                         IWL_DEBUG_TX_QUEUES(mvm,
1636                                             "Re-mapping sta %d tid %d\n",
1637                                             mvm_sta->deflink.sta_id, i);
1638                         txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1639                                                          mvm_sta->deflink.sta_id,
1640                                                          i, wdg);
1641                         /*
1642                          * on failures, just set it to IWL_MVM_INVALID_QUEUE
1643                          * to try again later, we have no other good way of
1644                          * failing here
1645                          */
1646                         if (txq_id < 0)
1647                                 txq_id = IWL_MVM_INVALID_QUEUE;
1648                         tid_data->txq_id = txq_id;
1649
1650                         /*
1651                          * Since we don't set the seq number after reset, and HW
1652                          * sets it now, FW reset will cause the seq num to start
1653                          * at 0 again, so driver will need to update it
1654                          * internally as well, so it keeps in sync with real val
1655                          */
1656                         tid_data->seq_number = 0;
1657                 } else {
1658                         u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1659
1660                         cfg.tid = i;
1661                         cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1662                         cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1663                                          txq_id ==
1664                                          IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1665
1666                         IWL_DEBUG_TX_QUEUES(mvm,
1667                                             "Re-mapping sta %d tid %d to queue %d\n",
1668                                             mvm_sta->deflink.sta_id, i,
1669                                             txq_id);
1670
1671                         iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1672                         mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1673                 }
1674         }
1675 }
1676
1677 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1678                                       struct iwl_mvm_int_sta *sta,
1679                                       const u8 *addr,
1680                                       u16 mac_id, u16 color)
1681 {
1682         struct iwl_mvm_add_sta_cmd cmd;
1683         int ret;
1684         u32 status = ADD_STA_SUCCESS;
1685
1686         lockdep_assert_held(&mvm->mutex);
1687
1688         memset(&cmd, 0, sizeof(cmd));
1689         cmd.sta_id = sta->sta_id;
1690
1691         if (iwl_mvm_has_new_station_api(mvm->fw) &&
1692             sta->type == IWL_STA_AUX_ACTIVITY)
1693                 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1694         else
1695                 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1696                                                                      color));
1697
1698         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1699                 cmd.station_type = sta->type;
1700
1701         if (!iwl_mvm_has_new_tx_api(mvm))
1702                 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1703         cmd.tid_disable_tx = cpu_to_le16(0xffff);
1704
1705         if (addr)
1706                 memcpy(cmd.addr, addr, ETH_ALEN);
1707
1708         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1709                                           iwl_mvm_add_sta_cmd_size(mvm),
1710                                           &cmd, &status);
1711         if (ret)
1712                 return ret;
1713
1714         switch (status & IWL_ADD_STA_STATUS_MASK) {
1715         case ADD_STA_SUCCESS:
1716                 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1717                 return 0;
1718         default:
1719                 ret = -EIO;
1720                 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1721                         status);
1722                 break;
1723         }
1724         return ret;
1725 }
1726
1727 /* Initialize driver data of a new sta */
1728 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1729                      struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1730 {
1731         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1732         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1733         struct iwl_mvm_rxq_dup_data *dup_data;
1734         int i, ret = 0;
1735
1736         lockdep_assert_held(&mvm->mutex);
1737
1738         mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1739                                                       mvmvif->color);
1740         mvm_sta->vif = vif;
1741
1742         /* for MLD sta_id(s) should be allocated for each link before calling
1743          * this function
1744          */
1745         if (!mvm->mld_api_is_used) {
1746                 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
1747                         return -EINVAL;
1748
1749                 mvm_sta->deflink.sta_id = sta_id;
1750                 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1751
1752                 if (!mvm->trans->trans_cfg->gen2)
1753                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1754                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1755                 else
1756                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1757                                 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1758         }
1759
1760         mvm_sta->tt_tx_protection = false;
1761         mvm_sta->sta_type = sta_type;
1762
1763         mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1764
1765         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1766                 /*
1767                  * Mark all queues for this STA as unallocated and defer TX
1768                  * frames until the queue is allocated
1769                  */
1770                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1771         }
1772
1773         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1774                 struct iwl_mvm_txq *mvmtxq =
1775                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1776
1777                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1778                 INIT_LIST_HEAD(&mvmtxq->list);
1779                 atomic_set(&mvmtxq->tx_request, 0);
1780         }
1781
1782         if (iwl_mvm_has_new_rx_api(mvm)) {
1783                 int q;
1784
1785                 dup_data = kcalloc(mvm->trans->num_rx_queues,
1786                                    sizeof(*dup_data), GFP_KERNEL);
1787                 if (!dup_data)
1788                         return -ENOMEM;
1789                 /*
1790                  * Initialize all the last_seq values to 0xffff which can never
1791                  * compare equal to the frame's seq_ctrl in the check in
1792                  * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1793                  * number and fragmented packets don't reach that function.
1794                  *
1795                  * This thus allows receiving a packet with seqno 0 and the
1796                  * retry bit set as the very first packet on a new TID.
1797                  */
1798                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1799                         memset(dup_data[q].last_seq, 0xff,
1800                                sizeof(dup_data[q].last_seq));
1801                 mvm_sta->dup_data = dup_data;
1802         }
1803
1804         if (!iwl_mvm_has_new_tx_api(mvm)) {
1805                 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1806                                                  ieee80211_vif_type_p2p(vif));
1807                 if (ret)
1808                         return ret;
1809         }
1810
1811         /*
1812          * if rs is registered with mac80211, then "add station" will be handled
1813          * via the corresponding ops, otherwise need to notify rate scaling here
1814          */
1815         if (iwl_mvm_has_tlc_offload(mvm))
1816                 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1817         else
1818                 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1819
1820         iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1821
1822         return 0;
1823 }
1824
1825 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1826                     struct ieee80211_vif *vif,
1827                     struct ieee80211_sta *sta)
1828 {
1829         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1830         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1831         int ret, sta_id;
1832         bool sta_update = false;
1833         unsigned int sta_flags = 0;
1834
1835         lockdep_assert_held(&mvm->mutex);
1836
1837         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1838                 sta_id = iwl_mvm_find_free_sta_id(mvm,
1839                                                   ieee80211_vif_type_p2p(vif));
1840         else
1841                 sta_id = mvm_sta->deflink.sta_id;
1842
1843         if (sta_id == IWL_MVM_INVALID_STA)
1844                 return -ENOSPC;
1845
1846         spin_lock_init(&mvm_sta->lock);
1847
1848         /* if this is a HW restart re-alloc existing queues */
1849         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1850                 struct iwl_mvm_int_sta tmp_sta = {
1851                         .sta_id = sta_id,
1852                         .type = mvm_sta->sta_type,
1853                 };
1854
1855                 /* First add an empty station since allocating
1856                  * a queue requires a valid station
1857                  */
1858                 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1859                                                  mvmvif->id, mvmvif->color);
1860                 if (ret)
1861                         goto err;
1862
1863                 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1864                 sta_update = true;
1865                 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1866                 goto update_fw;
1867         }
1868
1869         ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1870                                sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1871         if (ret)
1872                 goto err;
1873
1874 update_fw:
1875         ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1876         if (ret)
1877                 goto err;
1878
1879         if (vif->type == NL80211_IFTYPE_STATION) {
1880                 if (!sta->tdls) {
1881                         WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA);
1882                         mvmvif->deflink.ap_sta_id = sta_id;
1883                 } else {
1884                         WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA);
1885                 }
1886         }
1887
1888         rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1889
1890         return 0;
1891
1892 err:
1893         return ret;
1894 }
1895
1896 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1897                       bool drain)
1898 {
1899         struct iwl_mvm_add_sta_cmd cmd = {};
1900         int ret;
1901         u32 status;
1902
1903         lockdep_assert_held(&mvm->mutex);
1904
1905         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1906         cmd.sta_id = mvmsta->deflink.sta_id;
1907         cmd.add_modify = STA_MODE_MODIFY;
1908         cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1909         cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1910
1911         status = ADD_STA_SUCCESS;
1912         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1913                                           iwl_mvm_add_sta_cmd_size(mvm),
1914                                           &cmd, &status);
1915         if (ret)
1916                 return ret;
1917
1918         switch (status & IWL_ADD_STA_STATUS_MASK) {
1919         case ADD_STA_SUCCESS:
1920                 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1921                                mvmsta->deflink.sta_id);
1922                 break;
1923         default:
1924                 ret = -EIO;
1925                 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1926                         mvmsta->deflink.sta_id);
1927                 break;
1928         }
1929
1930         return ret;
1931 }
1932
1933 /*
1934  * Remove a station from the FW table. Before sending the command to remove
1935  * the station validate that the station is indeed known to the driver (sanity
1936  * only).
1937  */
1938 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1939 {
1940         struct ieee80211_sta *sta;
1941         struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1942                 .sta_id = sta_id,
1943         };
1944         int ret;
1945
1946         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1947                                         lockdep_is_held(&mvm->mutex));
1948
1949         /* Note: internal stations are marked as error values */
1950         if (!sta) {
1951                 IWL_ERR(mvm, "Invalid station id\n");
1952                 return -EINVAL;
1953         }
1954
1955         ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1956                                    sizeof(rm_sta_cmd), &rm_sta_cmd);
1957         if (ret) {
1958                 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1959                 return ret;
1960         }
1961
1962         return 0;
1963 }
1964
1965 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1966                                        struct ieee80211_vif *vif,
1967                                        struct ieee80211_sta *sta)
1968 {
1969         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1970         int i;
1971
1972         lockdep_assert_held(&mvm->mutex);
1973
1974         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1975                 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1976                         continue;
1977
1978                 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
1979                                     &mvm_sta->tid_data[i].txq_id, i);
1980                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1981         }
1982
1983         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1984                 struct iwl_mvm_txq *mvmtxq =
1985                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1986
1987                 spin_lock_bh(&mvm->add_stream_lock);
1988                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1989                 list_del_init(&mvmtxq->list);
1990                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1991                 spin_unlock_bh(&mvm->add_stream_lock);
1992         }
1993 }
1994
1995 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
1996                                   struct iwl_mvm_sta *mvm_sta)
1997 {
1998         int i;
1999
2000         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2001                 u16 txq_id;
2002                 int ret;
2003
2004                 spin_lock_bh(&mvm_sta->lock);
2005                 txq_id = mvm_sta->tid_data[i].txq_id;
2006                 spin_unlock_bh(&mvm_sta->lock);
2007
2008                 if (txq_id == IWL_MVM_INVALID_QUEUE)
2009                         continue;
2010
2011                 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2012                 if (ret)
2013                         return ret;
2014         }
2015
2016         return 0;
2017 }
2018
2019 /* Execute the common part for both MLD and non-MLD modes.
2020  * Returns if we're done with removing the station, either
2021  * with error or success
2022  */
2023 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2024                      struct ieee80211_sta *sta,
2025                      struct ieee80211_link_sta *link_sta, int *ret)
2026 {
2027         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2028         struct iwl_mvm_vif_link_info *mvm_link =
2029                 mvmvif->link[link_sta->link_id];
2030         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2031         struct iwl_mvm_link_sta *mvm_link_sta;
2032         u8 sta_id;
2033
2034         lockdep_assert_held(&mvm->mutex);
2035
2036         mvm_link_sta =
2037                 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2038                                           lockdep_is_held(&mvm->mutex));
2039         sta_id = mvm_link_sta->sta_id;
2040
2041         /* If there is a TXQ still marked as reserved - free it */
2042         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2043                 u8 reserved_txq = mvm_sta->reserved_queue;
2044                 enum iwl_mvm_queue_status *status;
2045
2046                 /*
2047                  * If no traffic has gone through the reserved TXQ - it
2048                  * is still marked as IWL_MVM_QUEUE_RESERVED, and
2049                  * should be manually marked as free again
2050                  */
2051                 status = &mvm->queue_info[reserved_txq].status;
2052                 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2053                          (*status != IWL_MVM_QUEUE_FREE),
2054                          "sta_id %d reserved txq %d status %d",
2055                          sta_id, reserved_txq, *status)) {
2056                         *ret = -EINVAL;
2057                         return true;
2058                 }
2059
2060                 *status = IWL_MVM_QUEUE_FREE;
2061         }
2062
2063         if (vif->type == NL80211_IFTYPE_STATION &&
2064             mvm_link->ap_sta_id == sta_id) {
2065                 /* if associated - we can't remove the AP STA now */
2066                 if (vif->cfg.assoc)
2067                         return true;
2068
2069                 /* first remove remaining keys */
2070                 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);
2071
2072                 /* unassoc - go ahead - remove the AP STA now */
2073                 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA;
2074         }
2075
2076         /*
2077          * This shouldn't happen - the TDLS channel switch should be canceled
2078          * before the STA is removed.
2079          */
2080         if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2081                 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;
2082                 cancel_delayed_work(&mvm->tdls_cs.dwork);
2083         }
2084
2085         return false;
2086 }
2087
2088 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2089                    struct ieee80211_vif *vif,
2090                    struct ieee80211_sta *sta)
2091 {
2092         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2093         int ret;
2094
2095         lockdep_assert_held(&mvm->mutex);
2096
2097         ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2098         if (ret)
2099                 return ret;
2100
2101         /* flush its queues here since we are freeing mvm_sta */
2102         ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2103                                 mvm_sta->tfd_queue_msk);
2104         if (ret)
2105                 return ret;
2106         if (iwl_mvm_has_new_tx_api(mvm)) {
2107                 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2108         } else {
2109                 u32 q_mask = mvm_sta->tfd_queue_msk;
2110
2111                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2112                                                      q_mask);
2113         }
2114         if (ret)
2115                 return ret;
2116
2117         ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2118
2119         iwl_mvm_disable_sta_queues(mvm, vif, sta);
2120
2121         if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))
2122                 return ret;
2123
2124         ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2125         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2126
2127         return ret;
2128 }
2129
2130 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2131                       struct ieee80211_vif *vif,
2132                       u8 sta_id)
2133 {
2134         int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2135
2136         lockdep_assert_held(&mvm->mutex);
2137
2138         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2139         return ret;
2140 }
2141
2142 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2143                              struct iwl_mvm_int_sta *sta,
2144                              u32 qmask, enum nl80211_iftype iftype,
2145                              u8 type)
2146 {
2147         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2148             sta->sta_id == IWL_MVM_INVALID_STA) {
2149                 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2150                 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
2151                         return -ENOSPC;
2152         }
2153
2154         sta->tfd_queue_msk = qmask;
2155         sta->type = type;
2156
2157         /* put a non-NULL value so iterating over the stations won't stop */
2158         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2159         return 0;
2160 }
2161
2162 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2163 {
2164         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2165         memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2166         sta->sta_id = IWL_MVM_INVALID_STA;
2167 }
2168
2169 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2170                                           u8 sta_id, u8 fifo)
2171 {
2172         unsigned int wdg_timeout =
2173                 mvm->trans->trans_cfg->base_params->wd_timeout;
2174         struct iwl_trans_txq_scd_cfg cfg = {
2175                 .fifo = fifo,
2176                 .sta_id = sta_id,
2177                 .tid = IWL_MAX_TID_COUNT,
2178                 .aggregate = false,
2179                 .frame_limit = IWL_FRAME_LIMIT,
2180         };
2181
2182         WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2183
2184         iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2185 }
2186
2187 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2188 {
2189         unsigned int wdg_timeout =
2190                 mvm->trans->trans_cfg->base_params->wd_timeout;
2191
2192         WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2193
2194         return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2195                                        wdg_timeout);
2196 }
2197
2198 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2199                                           int maccolor, u8 *addr,
2200                                           struct iwl_mvm_int_sta *sta,
2201                                           u16 *queue, int fifo)
2202 {
2203         int ret;
2204
2205         /* Map queue to fifo - needs to happen before adding station */
2206         if (!iwl_mvm_has_new_tx_api(mvm))
2207                 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2208
2209         ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2210         if (ret) {
2211                 if (!iwl_mvm_has_new_tx_api(mvm))
2212                         iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2213                                             IWL_MAX_TID_COUNT);
2214                 return ret;
2215         }
2216
2217         /*
2218          * For 22000 firmware and on we cannot add queue to a station unknown
2219          * to firmware so enable queue here - after the station was added
2220          */
2221         if (iwl_mvm_has_new_tx_api(mvm)) {
2222                 int txq;
2223
2224                 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2225                 if (txq < 0) {
2226                         iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2227                         return txq;
2228                 }
2229
2230                 *queue = txq;
2231         }
2232
2233         return 0;
2234 }
2235
2236 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2237 {
2238         int ret;
2239         u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2240                 BIT(mvm->aux_queue);
2241
2242         lockdep_assert_held(&mvm->mutex);
2243
2244         /* Allocate aux station and assign to it the aux queue */
2245         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2246                                        NL80211_IFTYPE_UNSPECIFIED,
2247                                        IWL_STA_AUX_ACTIVITY);
2248         if (ret)
2249                 return ret;
2250
2251         /*
2252          * In CDB NICs we need to specify which lmac to use for aux activity
2253          * using the mac_id argument place to send lmac_id to the function
2254          */
2255         ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2256                                              &mvm->aux_sta, &mvm->aux_queue,
2257                                              IWL_MVM_TX_FIFO_MCAST);
2258         if (ret) {
2259                 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2260                 return ret;
2261         }
2262
2263         return 0;
2264 }
2265
2266 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2267 {
2268         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2269
2270         lockdep_assert_held(&mvm->mutex);
2271
2272         return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2273                                               NULL, &mvm->snif_sta,
2274                                               &mvm->snif_queue,
2275                                               IWL_MVM_TX_FIFO_BE);
2276 }
2277
2278 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2279 {
2280         int ret;
2281
2282         lockdep_assert_held(&mvm->mutex);
2283
2284         if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA))
2285                 return -EINVAL;
2286
2287         iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2288                             &mvm->snif_queue, IWL_MAX_TID_COUNT);
2289         ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2290         if (ret)
2291                 IWL_WARN(mvm, "Failed sending remove station\n");
2292
2293         return ret;
2294 }
2295
2296 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2297 {
2298         int ret;
2299
2300         lockdep_assert_held(&mvm->mutex);
2301
2302         if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA))
2303                 return -EINVAL;
2304
2305         iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2306                             &mvm->aux_queue, IWL_MAX_TID_COUNT);
2307         ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2308         if (ret)
2309                 IWL_WARN(mvm, "Failed sending remove station\n");
2310         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2311
2312         return ret;
2313 }
2314
2315 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2316 {
2317         iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2318 }
2319
2320 /*
2321  * Send the add station command for the vif's broadcast station.
2322  * Assumes that the station was already allocated.
2323  *
2324  * @mvm: the mvm component
2325  * @vif: the interface to which the broadcast station is added
2326  * @bsta: the broadcast station to add.
2327  */
2328 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2329 {
2330         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2331         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2332         static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2333         const u8 *baddr = _baddr;
2334         int queue;
2335         int ret;
2336         unsigned int wdg_timeout =
2337                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2338         struct iwl_trans_txq_scd_cfg cfg = {
2339                 .fifo = IWL_MVM_TX_FIFO_VO,
2340                 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2341                 .tid = IWL_MAX_TID_COUNT,
2342                 .aggregate = false,
2343                 .frame_limit = IWL_FRAME_LIMIT,
2344         };
2345
2346         lockdep_assert_held(&mvm->mutex);
2347
2348         if (!iwl_mvm_has_new_tx_api(mvm)) {
2349                 if (vif->type == NL80211_IFTYPE_AP ||
2350                     vif->type == NL80211_IFTYPE_ADHOC) {
2351                         queue = mvm->probe_queue;
2352                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2353                         queue = mvm->p2p_dev_queue;
2354                 } else {
2355                         WARN(1, "Missing required TXQ for adding bcast STA\n");
2356                         return -EINVAL;
2357                 }
2358
2359                 bsta->tfd_queue_msk |= BIT(queue);
2360
2361                 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2362         }
2363
2364         if (vif->type == NL80211_IFTYPE_ADHOC)
2365                 baddr = vif->bss_conf.bssid;
2366
2367         if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))
2368                 return -ENOSPC;
2369
2370         ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2371                                          mvmvif->id, mvmvif->color);
2372         if (ret)
2373                 return ret;
2374
2375         /*
2376          * For 22000 firmware and on we cannot add queue to a station unknown
2377          * to firmware so enable queue here - after the station was added
2378          */
2379         if (iwl_mvm_has_new_tx_api(mvm)) {
2380                 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2381                                                 IWL_MAX_TID_COUNT,
2382                                                 wdg_timeout);
2383                 if (queue < 0) {
2384                         iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2385                         return queue;
2386                 }
2387
2388                 if (vif->type == NL80211_IFTYPE_AP ||
2389                     vif->type == NL80211_IFTYPE_ADHOC) {
2390                         /* for queue management */
2391                         mvm->probe_queue = queue;
2392                         /* for use in TX */
2393                         mvmvif->deflink.mgmt_queue = queue;
2394                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2395                         mvm->p2p_dev_queue = queue;
2396                 }
2397         } else if (vif->type == NL80211_IFTYPE_AP ||
2398                    vif->type == NL80211_IFTYPE_ADHOC) {
2399                 /* set it for use in TX */
2400                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2401         }
2402
2403         return 0;
2404 }
2405
2406 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2407                                    struct ieee80211_vif *vif)
2408 {
2409         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2410         u16 *queueptr, queue;
2411
2412         lockdep_assert_held(&mvm->mutex);
2413
2414         iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2415                           mvmvif->deflink.bcast_sta.tfd_queue_msk);
2416
2417         switch (vif->type) {
2418         case NL80211_IFTYPE_AP:
2419         case NL80211_IFTYPE_ADHOC:
2420                 queueptr = &mvm->probe_queue;
2421                 break;
2422         case NL80211_IFTYPE_P2P_DEVICE:
2423                 queueptr = &mvm->p2p_dev_queue;
2424                 break;
2425         default:
2426                 WARN(1, "Can't free bcast queue on vif type %d\n",
2427                      vif->type);
2428                 return;
2429         }
2430
2431         queue = *queueptr;
2432         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2433                             queueptr, IWL_MAX_TID_COUNT);
2434
2435         if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2436                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2437
2438         if (iwl_mvm_has_new_tx_api(mvm))
2439                 return;
2440
2441         WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2442         mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2443 }
2444
2445 /* Send the FW a request to remove the station from it's internal data
2446  * structures, but DO NOT remove the entry from the local data structures. */
2447 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2448 {
2449         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2450         int ret;
2451
2452         lockdep_assert_held(&mvm->mutex);
2453
2454         iwl_mvm_free_bcast_sta_queues(mvm, vif);
2455
2456         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2457         if (ret)
2458                 IWL_WARN(mvm, "Failed sending remove station\n");
2459         return ret;
2460 }
2461
2462 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2463 {
2464         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2465
2466         lockdep_assert_held(&mvm->mutex);
2467
2468         return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2469                                         ieee80211_vif_type_p2p(vif),
2470                                         IWL_STA_GENERAL_PURPOSE);
2471 }
2472
2473 /* Allocate a new station entry for the broadcast station to the given vif,
2474  * and send it to the FW.
2475  * Note that each P2P mac should have its own broadcast station.
2476  *
2477  * @mvm: the mvm component
2478  * @vif: the interface to which the broadcast station is added
2479  * @bsta: the broadcast station to add. */
2480 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2481 {
2482         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2483         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2484         int ret;
2485
2486         lockdep_assert_held(&mvm->mutex);
2487
2488         ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2489         if (ret)
2490                 return ret;
2491
2492         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2493
2494         if (ret)
2495                 iwl_mvm_dealloc_int_sta(mvm, bsta);
2496
2497         return ret;
2498 }
2499
2500 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2501 {
2502         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2503
2504         iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2505 }
2506
2507 /*
2508  * Send the FW a request to remove the station from it's internal data
2509  * structures, and in addition remove it from the local data structure.
2510  */
2511 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2512 {
2513         int ret;
2514
2515         lockdep_assert_held(&mvm->mutex);
2516
2517         ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2518
2519         iwl_mvm_dealloc_bcast_sta(mvm, vif);
2520
2521         return ret;
2522 }
2523
2524 /*
2525  * Allocate a new station entry for the multicast station to the given vif,
2526  * and send it to the FW.
2527  * Note that each AP/GO mac should have its own multicast station.
2528  *
2529  * @mvm: the mvm component
2530  * @vif: the interface to which the multicast station is added
2531  */
2532 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2533 {
2534         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2535         struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2536         static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2537         const u8 *maddr = _maddr;
2538         struct iwl_trans_txq_scd_cfg cfg = {
2539                 .fifo = vif->type == NL80211_IFTYPE_AP ?
2540                         IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2541                 .sta_id = msta->sta_id,
2542                 .tid = 0,
2543                 .aggregate = false,
2544                 .frame_limit = IWL_FRAME_LIMIT,
2545         };
2546         unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2547         int ret;
2548
2549         lockdep_assert_held(&mvm->mutex);
2550
2551         if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2552                     vif->type != NL80211_IFTYPE_ADHOC))
2553                 return -ENOTSUPP;
2554
2555         /*
2556          * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2557          * invalid, so make sure we use the queue we want.
2558          * Note that this is done here as we want to avoid making DQA
2559          * changes in mac80211 layer.
2560          */
2561         if (vif->type == NL80211_IFTYPE_ADHOC)
2562                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2563
2564         /*
2565          * While in previous FWs we had to exclude cab queue from TFD queue
2566          * mask, now it is needed as any other queue.
2567          */
2568         if (!iwl_mvm_has_new_tx_api(mvm) &&
2569             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2570                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2571                                    &cfg,
2572                                    timeout);
2573                 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2574         }
2575         ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2576                                          mvmvif->id, mvmvif->color);
2577         if (ret)
2578                 goto err;
2579
2580         /*
2581          * Enable cab queue after the ADD_STA command is sent.
2582          * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2583          * command with unknown station id, and for FW that doesn't support
2584          * station API since the cab queue is not included in the
2585          * tfd_queue_mask.
2586          */
2587         if (iwl_mvm_has_new_tx_api(mvm)) {
2588                 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2589                                                     0, timeout);
2590                 if (queue < 0) {
2591                         ret = queue;
2592                         goto err;
2593                 }
2594                 mvmvif->deflink.cab_queue = queue;
2595         } else if (!fw_has_api(&mvm->fw->ucode_capa,
2596                                IWL_UCODE_TLV_API_STA_TYPE))
2597                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2598                                    &cfg,
2599                                    timeout);
2600
2601         return 0;
2602 err:
2603         iwl_mvm_dealloc_int_sta(mvm, msta);
2604         return ret;
2605 }
2606
2607 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2608                                     struct ieee80211_key_conf *keyconf,
2609                                     bool mcast)
2610 {
2611         union {
2612                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2613                 struct iwl_mvm_add_sta_key_cmd cmd;
2614         } u = {};
2615         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2616                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2617         __le16 key_flags;
2618         int ret, size;
2619         u32 status;
2620
2621         /* This is a valid situation for GTK removal */
2622         if (sta_id == IWL_MVM_INVALID_STA)
2623                 return 0;
2624
2625         key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2626                                  STA_KEY_FLG_KEYID_MSK);
2627         key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2628         key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2629
2630         if (mcast)
2631                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2632
2633         /*
2634          * The fields assigned here are in the same location at the start
2635          * of the command, so we can do this union trick.
2636          */
2637         u.cmd.common.key_flags = key_flags;
2638         u.cmd.common.key_offset = keyconf->hw_key_idx;
2639         u.cmd.common.sta_id = sta_id;
2640
2641         size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2642
2643         status = ADD_STA_SUCCESS;
2644         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2645                                           &status);
2646
2647         switch (status) {
2648         case ADD_STA_SUCCESS:
2649                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2650                 break;
2651         default:
2652                 ret = -EIO;
2653                 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2654                 break;
2655         }
2656
2657         return ret;
2658 }
2659
2660 /*
2661  * Send the FW a request to remove the station from it's internal data
2662  * structures, and in addition remove it from the local data structure.
2663  */
2664 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2665 {
2666         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2667         int ret;
2668
2669         lockdep_assert_held(&mvm->mutex);
2670
2671         iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2672                           mvmvif->deflink.mcast_sta.tfd_queue_msk);
2673
2674         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2675                             &mvmvif->deflink.cab_queue, 0);
2676
2677         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2678         if (ret)
2679                 IWL_WARN(mvm, "Failed sending remove station\n");
2680
2681         return ret;
2682 }
2683
2684 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2685 {
2686         struct iwl_mvm_delba_data notif = {
2687                 .baid = baid,
2688         };
2689
2690         iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2691                                         &notif, sizeof(notif));
2692 };
2693
2694 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2695                                  struct iwl_mvm_baid_data *data)
2696 {
2697         int i;
2698
2699         iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2700
2701         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2702                 int j;
2703                 struct iwl_mvm_reorder_buffer *reorder_buf =
2704                         &data->reorder_buf[i];
2705                 struct iwl_mvm_reorder_buf_entry *entries =
2706                         &data->entries[i * data->entries_per_queue];
2707
2708                 spin_lock_bh(&reorder_buf->lock);
2709                 if (likely(!reorder_buf->num_stored)) {
2710                         spin_unlock_bh(&reorder_buf->lock);
2711                         continue;
2712                 }
2713
2714                 /*
2715                  * This shouldn't happen in regular DELBA since the internal
2716                  * delBA notification should trigger a release of all frames in
2717                  * the reorder buffer.
2718                  */
2719                 WARN_ON(1);
2720
2721                 for (j = 0; j < reorder_buf->buf_size; j++)
2722                         __skb_queue_purge(&entries[j].frames);
2723
2724                 spin_unlock_bh(&reorder_buf->lock);
2725         }
2726 }
2727
2728 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2729                                         struct iwl_mvm_baid_data *data,
2730                                         u16 ssn, u16 buf_size)
2731 {
2732         int i;
2733
2734         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2735                 struct iwl_mvm_reorder_buffer *reorder_buf =
2736                         &data->reorder_buf[i];
2737                 struct iwl_mvm_reorder_buf_entry *entries =
2738                         &data->entries[i * data->entries_per_queue];
2739                 int j;
2740
2741                 reorder_buf->num_stored = 0;
2742                 reorder_buf->head_sn = ssn;
2743                 reorder_buf->buf_size = buf_size;
2744                 spin_lock_init(&reorder_buf->lock);
2745                 reorder_buf->mvm = mvm;
2746                 reorder_buf->queue = i;
2747                 reorder_buf->valid = false;
2748                 for (j = 0; j < reorder_buf->buf_size; j++)
2749                         __skb_queue_head_init(&entries[j].frames);
2750         }
2751 }
2752
2753 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2754                                   struct ieee80211_sta *sta,
2755                                   bool start, int tid, u16 ssn,
2756                                   u16 buf_size)
2757 {
2758         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2759         struct iwl_mvm_add_sta_cmd cmd = {
2760                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2761                 .sta_id = mvm_sta->deflink.sta_id,
2762                 .add_modify = STA_MODE_MODIFY,
2763         };
2764         u32 status;
2765         int ret;
2766
2767         if (start) {
2768                 cmd.add_immediate_ba_tid = tid;
2769                 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2770                 cmd.rx_ba_window = cpu_to_le16(buf_size);
2771                 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2772         } else {
2773                 cmd.remove_immediate_ba_tid = tid;
2774                 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2775         }
2776
2777         status = ADD_STA_SUCCESS;
2778         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2779                                           iwl_mvm_add_sta_cmd_size(mvm),
2780                                           &cmd, &status);
2781         if (ret)
2782                 return ret;
2783
2784         switch (status & IWL_ADD_STA_STATUS_MASK) {
2785         case ADD_STA_SUCCESS:
2786                 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2787                              start ? "start" : "stopp");
2788                 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2789                             !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2790                         return -EINVAL;
2791                 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2792         case ADD_STA_IMMEDIATE_BA_FAILURE:
2793                 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2794                 return -ENOSPC;
2795         default:
2796                 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2797                         start ? "start" : "stopp", status);
2798                 return -EIO;
2799         }
2800 }
2801
2802 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2803                                   struct ieee80211_sta *sta,
2804                                   bool start, int tid, u16 ssn,
2805                                   u16 buf_size, int baid)
2806 {
2807         struct iwl_rx_baid_cfg_cmd cmd = {
2808                 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2809                                   cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2810         };
2811         u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD);
2812         int ret;
2813
2814         BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2815
2816         if (start) {
2817                 cmd.alloc.sta_id_mask =
2818                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2819                 cmd.alloc.tid = tid;
2820                 cmd.alloc.ssn = cpu_to_le16(ssn);
2821                 cmd.alloc.win_size = cpu_to_le16(buf_size);
2822                 baid = -EIO;
2823         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) {
2824                 cmd.remove_v1.baid = cpu_to_le32(baid);
2825                 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2826         } else {
2827                 cmd.remove.sta_id_mask =
2828                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2829                 cmd.remove.tid = cpu_to_le32(tid);
2830         }
2831
2832         ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd),
2833                                           &cmd, &baid);
2834         if (ret)
2835                 return ret;
2836
2837         if (!start) {
2838                 /* ignore firmware baid on remove */
2839                 baid = 0;
2840         }
2841
2842         IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2843                      start ? "start" : "stopp");
2844
2845         if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2846                 return -EINVAL;
2847
2848         return baid;
2849 }
2850
2851 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2852                               bool start, int tid, u16 ssn, u16 buf_size,
2853                               int baid)
2854 {
2855         if (fw_has_capa(&mvm->fw->ucode_capa,
2856                         IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2857                 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2858                                               tid, ssn, buf_size, baid);
2859
2860         return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2861                                       tid, ssn, buf_size);
2862 }
2863
2864 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2865                        int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2866 {
2867         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2868         struct iwl_mvm_baid_data *baid_data = NULL;
2869         int ret, baid;
2870         u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2871                                                                IWL_MAX_BAID_OLD;
2872
2873         lockdep_assert_held(&mvm->mutex);
2874
2875         if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2876                 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2877                 return -ENOSPC;
2878         }
2879
2880         if (iwl_mvm_has_new_rx_api(mvm) && start) {
2881                 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2882
2883                 /* sparse doesn't like the __align() so don't check */
2884 #ifndef __CHECKER__
2885                 /*
2886                  * The division below will be OK if either the cache line size
2887                  * can be divided by the entry size (ALIGN will round up) or if
2888                  * if the entry size can be divided by the cache line size, in
2889                  * which case the ALIGN() will do nothing.
2890                  */
2891                 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2892                              sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2893 #endif
2894
2895                 /*
2896                  * Upward align the reorder buffer size to fill an entire cache
2897                  * line for each queue, to avoid sharing cache lines between
2898                  * different queues.
2899                  */
2900                 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2901
2902                 /*
2903                  * Allocate here so if allocation fails we can bail out early
2904                  * before starting the BA session in the firmware
2905                  */
2906                 baid_data = kzalloc(sizeof(*baid_data) +
2907                                     mvm->trans->num_rx_queues *
2908                                     reorder_buf_size,
2909                                     GFP_KERNEL);
2910                 if (!baid_data)
2911                         return -ENOMEM;
2912
2913                 /*
2914                  * This division is why we need the above BUILD_BUG_ON(),
2915                  * if that doesn't hold then this will not be right.
2916                  */
2917                 baid_data->entries_per_queue =
2918                         reorder_buf_size / sizeof(baid_data->entries[0]);
2919         }
2920
2921         if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2922                 baid = mvm_sta->tid_to_baid[tid];
2923         } else {
2924                 /* we don't really need it in this case */
2925                 baid = -1;
2926         }
2927
2928         /* Don't send command to remove (start=0) BAID during restart */
2929         if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2930                 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2931                                           baid);
2932
2933         if (baid < 0) {
2934                 ret = baid;
2935                 goto out_free;
2936         }
2937
2938         if (start) {
2939                 mvm->rx_ba_sessions++;
2940
2941                 if (!iwl_mvm_has_new_rx_api(mvm))
2942                         return 0;
2943
2944                 baid_data->baid = baid;
2945                 baid_data->timeout = timeout;
2946                 baid_data->last_rx = jiffies;
2947                 baid_data->rcu_ptr = &mvm->baid_map[baid];
2948                 timer_setup(&baid_data->session_timer,
2949                             iwl_mvm_rx_agg_session_expired, 0);
2950                 baid_data->mvm = mvm;
2951                 baid_data->tid = tid;
2952                 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2953
2954                 mvm_sta->tid_to_baid[tid] = baid;
2955                 if (timeout)
2956                         mod_timer(&baid_data->session_timer,
2957                                   TU_TO_EXP_TIME(timeout * 2));
2958
2959                 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size);
2960                 /*
2961                  * protect the BA data with RCU to cover a case where our
2962                  * internal RX sync mechanism will timeout (not that it's
2963                  * supposed to happen) and we will free the session data while
2964                  * RX is being processed in parallel
2965                  */
2966                 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2967                              mvm_sta->deflink.sta_id, tid, baid);
2968                 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2969                 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2970         } else  {
2971                 baid = mvm_sta->tid_to_baid[tid];
2972
2973                 if (mvm->rx_ba_sessions > 0)
2974                         /* check that restart flow didn't zero the counter */
2975                         mvm->rx_ba_sessions--;
2976                 if (!iwl_mvm_has_new_rx_api(mvm))
2977                         return 0;
2978
2979                 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2980                         return -EINVAL;
2981
2982                 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2983                 if (WARN_ON(!baid_data))
2984                         return -EINVAL;
2985
2986                 /* synchronize all rx queues so we can safely delete */
2987                 iwl_mvm_free_reorder(mvm, baid_data);
2988                 timer_shutdown_sync(&baid_data->session_timer);
2989                 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2990                 kfree_rcu(baid_data, rcu_head);
2991                 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
2992
2993                 /*
2994                  * After we've deleted it, do another queue sync
2995                  * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently
2996                  * running it won't find a new session in the old
2997                  * BAID. It can find the NULL pointer for the BAID,
2998                  * but we must not have it find a different session.
2999                  */
3000                 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY,
3001                                                 true, NULL, 0);
3002         }
3003         return 0;
3004
3005 out_free:
3006         kfree(baid_data);
3007         return ret;
3008 }
3009
3010 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3011                        int tid, u8 queue, bool start)
3012 {
3013         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3014         struct iwl_mvm_add_sta_cmd cmd = {};
3015         int ret;
3016         u32 status;
3017
3018         lockdep_assert_held(&mvm->mutex);
3019
3020         if (start) {
3021                 mvm_sta->tfd_queue_msk |= BIT(queue);
3022                 mvm_sta->tid_disable_agg &= ~BIT(tid);
3023         } else {
3024                 /* In DQA-mode the queue isn't removed on agg termination */
3025                 mvm_sta->tid_disable_agg |= BIT(tid);
3026         }
3027
3028         cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3029         cmd.sta_id = mvm_sta->deflink.sta_id;
3030         cmd.add_modify = STA_MODE_MODIFY;
3031         if (!iwl_mvm_has_new_tx_api(mvm))
3032                 cmd.modify_mask = STA_MODIFY_QUEUES;
3033         cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3034         cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3035         cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3036
3037         status = ADD_STA_SUCCESS;
3038         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3039                                           iwl_mvm_add_sta_cmd_size(mvm),
3040                                           &cmd, &status);
3041         if (ret)
3042                 return ret;
3043
3044         switch (status & IWL_ADD_STA_STATUS_MASK) {
3045         case ADD_STA_SUCCESS:
3046                 break;
3047         default:
3048                 ret = -EIO;
3049                 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3050                         start ? "start" : "stopp", status);
3051                 break;
3052         }
3053
3054         return ret;
3055 }
3056
3057 const u8 tid_to_mac80211_ac[] = {
3058         IEEE80211_AC_BE,
3059         IEEE80211_AC_BK,
3060         IEEE80211_AC_BK,
3061         IEEE80211_AC_BE,
3062         IEEE80211_AC_VI,
3063         IEEE80211_AC_VI,
3064         IEEE80211_AC_VO,
3065         IEEE80211_AC_VO,
3066         IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3067 };
3068
3069 static const u8 tid_to_ucode_ac[] = {
3070         AC_BE,
3071         AC_BK,
3072         AC_BK,
3073         AC_BE,
3074         AC_VI,
3075         AC_VI,
3076         AC_VO,
3077         AC_VO,
3078 };
3079
3080 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3081                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3082 {
3083         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3084         struct iwl_mvm_tid_data *tid_data;
3085         u16 normalized_ssn;
3086         u16 txq_id;
3087         int ret;
3088
3089         if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3090                 return -EINVAL;
3091
3092         if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3093             mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3094                 IWL_ERR(mvm,
3095                         "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3096                         mvmsta->tid_data[tid].state);
3097                 return -ENXIO;
3098         }
3099
3100         lockdep_assert_held(&mvm->mutex);
3101
3102         if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3103             iwl_mvm_has_new_tx_api(mvm)) {
3104                 u8 ac = tid_to_mac80211_ac[tid];
3105
3106                 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3107                 if (ret)
3108                         return ret;
3109         }
3110
3111         spin_lock_bh(&mvmsta->lock);
3112
3113         /*
3114          * Note the possible cases:
3115          *  1. An enabled TXQ - TXQ needs to become agg'ed
3116          *  2. The TXQ hasn't yet been enabled, so find a free one and mark
3117          *      it as reserved
3118          */
3119         txq_id = mvmsta->tid_data[tid].txq_id;
3120         if (txq_id == IWL_MVM_INVALID_QUEUE) {
3121                 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3122                                               IWL_MVM_DQA_MIN_DATA_QUEUE,
3123                                               IWL_MVM_DQA_MAX_DATA_QUEUE);
3124                 if (ret < 0) {
3125                         IWL_ERR(mvm, "Failed to allocate agg queue\n");
3126                         goto out;
3127                 }
3128
3129                 txq_id = ret;
3130
3131                 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3132                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3133         } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3134                 ret = -ENXIO;
3135                 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3136                         tid, IWL_MAX_HW_QUEUES - 1);
3137                 goto out;
3138
3139         } else if (unlikely(mvm->queue_info[txq_id].status ==
3140                             IWL_MVM_QUEUE_SHARED)) {
3141                 ret = -ENXIO;
3142                 IWL_DEBUG_TX_QUEUES(mvm,
3143                                     "Can't start tid %d agg on shared queue!\n",
3144                                     tid);
3145                 goto out;
3146         }
3147
3148         IWL_DEBUG_TX_QUEUES(mvm,
3149                             "AGG for tid %d will be on queue #%d\n",
3150                             tid, txq_id);
3151
3152         tid_data = &mvmsta->tid_data[tid];
3153         tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3154         tid_data->txq_id = txq_id;
3155         *ssn = tid_data->ssn;
3156
3157         IWL_DEBUG_TX_QUEUES(mvm,
3158                             "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3159                             mvmsta->deflink.sta_id, tid, txq_id,
3160                             tid_data->ssn,
3161                             tid_data->next_reclaimed);
3162
3163         /*
3164          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3165          * to align the wrap around of ssn so we compare relevant values.
3166          */
3167         normalized_ssn = tid_data->ssn;
3168         if (mvm->trans->trans_cfg->gen2)
3169                 normalized_ssn &= 0xff;
3170
3171         if (normalized_ssn == tid_data->next_reclaimed) {
3172                 tid_data->state = IWL_AGG_STARTING;
3173                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3174         } else {
3175                 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3176                 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3177         }
3178
3179 out:
3180         spin_unlock_bh(&mvmsta->lock);
3181
3182         return ret;
3183 }
3184
3185 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3186                             struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3187                             bool amsdu)
3188 {
3189         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3190         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3191         unsigned int wdg_timeout =
3192                 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
3193         int queue, ret;
3194         bool alloc_queue = true;
3195         enum iwl_mvm_queue_status queue_status;
3196         u16 ssn;
3197
3198         struct iwl_trans_txq_scd_cfg cfg = {
3199                 .sta_id = mvmsta->deflink.sta_id,
3200                 .tid = tid,
3201                 .frame_limit = buf_size,
3202                 .aggregate = true,
3203         };
3204
3205         /*
3206          * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3207          * manager, so this function should never be called in this case.
3208          */
3209         if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3210                 return -EINVAL;
3211
3212         BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3213                      != IWL_MAX_TID_COUNT);
3214
3215         spin_lock_bh(&mvmsta->lock);
3216         ssn = tid_data->ssn;
3217         queue = tid_data->txq_id;
3218         tid_data->state = IWL_AGG_ON;
3219         mvmsta->agg_tids |= BIT(tid);
3220         tid_data->ssn = 0xffff;
3221         tid_data->amsdu_in_ampdu_allowed = amsdu;
3222         spin_unlock_bh(&mvmsta->lock);
3223
3224         if (iwl_mvm_has_new_tx_api(mvm)) {
3225                 /*
3226                  * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3227                  * would have failed, so if we are here there is no need to
3228                  * allocate a queue.
3229                  * However, if aggregation size is different than the default
3230                  * size, the scheduler should be reconfigured.
3231                  * We cannot do this with the new TX API, so return unsupported
3232                  * for now, until it will be offloaded to firmware..
3233                  * Note that if SCD default value changes - this condition
3234                  * should be updated as well.
3235                  */
3236                 if (buf_size < IWL_FRAME_LIMIT)
3237                         return -ENOTSUPP;
3238
3239                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3240                 if (ret)
3241                         return -EIO;
3242                 goto out;
3243         }
3244
3245         cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3246
3247         queue_status = mvm->queue_info[queue].status;
3248
3249         /* Maybe there is no need to even alloc a queue... */
3250         if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3251                 alloc_queue = false;
3252
3253         /*
3254          * Only reconfig the SCD for the queue if the window size has
3255          * changed from current (become smaller)
3256          */
3257         if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3258                 /*
3259                  * If reconfiguring an existing queue, it first must be
3260                  * drained
3261                  */
3262                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3263                                                      BIT(queue));
3264                 if (ret) {
3265                         IWL_ERR(mvm,
3266                                 "Error draining queue before reconfig\n");
3267                         return ret;
3268                 }
3269
3270                 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3271                                            mvmsta->deflink.sta_id, tid,
3272                                            buf_size, ssn);
3273                 if (ret) {
3274                         IWL_ERR(mvm,
3275                                 "Error reconfiguring TXQ #%d\n", queue);
3276                         return ret;
3277                 }
3278         }
3279
3280         if (alloc_queue)
3281                 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3282                                    &cfg, wdg_timeout);
3283
3284         /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3285         if (queue_status != IWL_MVM_QUEUE_SHARED) {
3286                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3287                 if (ret)
3288                         return -EIO;
3289         }
3290
3291         /* No need to mark as reserved */
3292         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3293
3294 out:
3295         /*
3296          * Even though in theory the peer could have different
3297          * aggregation reorder buffer sizes for different sessions,
3298          * our ucode doesn't allow for that and has a global limit
3299          * for each station. Therefore, use the minimum of all the
3300          * aggregation sessions and our default value.
3301          */
3302         mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3303                 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3304                     buf_size);
3305         mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3306                 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3307
3308         IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3309                      sta->addr, tid);
3310
3311         return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3312 }
3313
3314 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3315                                         struct iwl_mvm_sta *mvmsta,
3316                                         struct iwl_mvm_tid_data *tid_data)
3317 {
3318         u16 txq_id = tid_data->txq_id;
3319
3320         lockdep_assert_held(&mvm->mutex);
3321
3322         if (iwl_mvm_has_new_tx_api(mvm))
3323                 return;
3324
3325         /*
3326          * The TXQ is marked as reserved only if no traffic came through yet
3327          * This means no traffic has been sent on this TID (agg'd or not), so
3328          * we no longer have use for the queue. Since it hasn't even been
3329          * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3330          * free.
3331          */
3332         if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3333                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3334                 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3335         }
3336 }
3337
3338 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3339                             struct ieee80211_sta *sta, u16 tid)
3340 {
3341         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3342         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3343         u16 txq_id;
3344         int err;
3345
3346         /*
3347          * If mac80211 is cleaning its state, then say that we finished since
3348          * our state has been cleared anyway.
3349          */
3350         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3351                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3352                 return 0;
3353         }
3354
3355         spin_lock_bh(&mvmsta->lock);
3356
3357         txq_id = tid_data->txq_id;
3358
3359         IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3360                             mvmsta->deflink.sta_id, tid, txq_id,
3361                             tid_data->state);
3362
3363         mvmsta->agg_tids &= ~BIT(tid);
3364
3365         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3366
3367         switch (tid_data->state) {
3368         case IWL_AGG_ON:
3369                 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3370
3371                 IWL_DEBUG_TX_QUEUES(mvm,
3372                                     "ssn = %d, next_recl = %d\n",
3373                                     tid_data->ssn, tid_data->next_reclaimed);
3374
3375                 tid_data->ssn = 0xffff;
3376                 tid_data->state = IWL_AGG_OFF;
3377                 spin_unlock_bh(&mvmsta->lock);
3378
3379                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3380
3381                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3382                 return 0;
3383         case IWL_AGG_STARTING:
3384         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3385                 /*
3386                  * The agg session has been stopped before it was set up. This
3387                  * can happen when the AddBA timer times out for example.
3388                  */
3389
3390                 /* No barriers since we are under mutex */
3391                 lockdep_assert_held(&mvm->mutex);
3392
3393                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3394                 tid_data->state = IWL_AGG_OFF;
3395                 err = 0;
3396                 break;
3397         default:
3398                 IWL_ERR(mvm,
3399                         "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3400                         mvmsta->deflink.sta_id, tid, tid_data->state);
3401                 IWL_ERR(mvm,
3402                         "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3403                 err = -EINVAL;
3404         }
3405
3406         spin_unlock_bh(&mvmsta->lock);
3407
3408         return err;
3409 }
3410
3411 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3412                             struct ieee80211_sta *sta, u16 tid)
3413 {
3414         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3415         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3416         u16 txq_id;
3417         enum iwl_mvm_agg_state old_state;
3418
3419         /*
3420          * First set the agg state to OFF to avoid calling
3421          * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3422          */
3423         spin_lock_bh(&mvmsta->lock);
3424         txq_id = tid_data->txq_id;
3425         IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3426                             mvmsta->deflink.sta_id, tid, txq_id,
3427                             tid_data->state);
3428         old_state = tid_data->state;
3429         tid_data->state = IWL_AGG_OFF;
3430         mvmsta->agg_tids &= ~BIT(tid);
3431         spin_unlock_bh(&mvmsta->lock);
3432
3433         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3434
3435         if (old_state >= IWL_AGG_ON) {
3436                 iwl_mvm_drain_sta(mvm, mvmsta, true);
3437
3438                 if (iwl_mvm_has_new_tx_api(mvm)) {
3439                         if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3440                                                    BIT(tid)))
3441                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3442                         iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3443                 } else {
3444                         if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3445                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3446                         iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3447                 }
3448
3449                 iwl_mvm_drain_sta(mvm, mvmsta, false);
3450
3451                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3452         }
3453
3454         return 0;
3455 }
3456
3457 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3458 {
3459         int i, max = -1, max_offs = -1;
3460
3461         lockdep_assert_held(&mvm->mutex);
3462
3463         /* Pick the unused key offset with the highest 'deleted'
3464          * counter. Every time a key is deleted, all the counters
3465          * are incremented and the one that was just deleted is
3466          * reset to zero. Thus, the highest counter is the one
3467          * that was deleted longest ago. Pick that one.
3468          */
3469         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3470                 if (test_bit(i, mvm->fw_key_table))
3471                         continue;
3472                 if (mvm->fw_key_deleted[i] > max) {
3473                         max = mvm->fw_key_deleted[i];
3474                         max_offs = i;
3475                 }
3476         }
3477
3478         if (max_offs < 0)
3479                 return STA_KEY_IDX_INVALID;
3480
3481         return max_offs;
3482 }
3483
3484 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3485                                                struct ieee80211_vif *vif,
3486                                                struct ieee80211_sta *sta)
3487 {
3488         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3489
3490         if (sta)
3491                 return iwl_mvm_sta_from_mac80211(sta);
3492
3493         /*
3494          * The device expects GTKs for station interfaces to be
3495          * installed as GTKs for the AP station. If we have no
3496          * station ID, then use AP's station ID.
3497          */
3498         if (vif->type == NL80211_IFTYPE_STATION &&
3499             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3500                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3501
3502                 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3503                                             lockdep_is_held(&mvm->mutex));
3504
3505                 /*
3506                  * It is possible that the 'sta' parameter is NULL,
3507                  * for example when a GTK is removed - the sta_id will then
3508                  * be the AP ID, and no station was passed by mac80211.
3509                  */
3510                 if (IS_ERR_OR_NULL(sta))
3511                         return NULL;
3512
3513                 return iwl_mvm_sta_from_mac80211(sta);
3514         }
3515
3516         return NULL;
3517 }
3518
3519 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3520 {
3521         int i;
3522
3523         for (i = len - 1; i >= 0; i--) {
3524                 if (pn1[i] > pn2[i])
3525                         return 1;
3526                 if (pn1[i] < pn2[i])
3527                         return -1;
3528         }
3529
3530         return 0;
3531 }
3532
3533 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3534                                 u32 sta_id,
3535                                 struct ieee80211_key_conf *key, bool mcast,
3536                                 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3537                                 u8 key_offset, bool mfp)
3538 {
3539         union {
3540                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3541                 struct iwl_mvm_add_sta_key_cmd cmd;
3542         } u = {};
3543         __le16 key_flags;
3544         int ret;
3545         u32 status;
3546         u16 keyidx;
3547         u64 pn = 0;
3548         int i, size;
3549         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3550                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3551         int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3552                                             new_api ? 2 : 1);
3553
3554         if (sta_id == IWL_MVM_INVALID_STA)
3555                 return -EINVAL;
3556
3557         keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3558                  STA_KEY_FLG_KEYID_MSK;
3559         key_flags = cpu_to_le16(keyidx);
3560         key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3561
3562         switch (key->cipher) {
3563         case WLAN_CIPHER_SUITE_TKIP:
3564                 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3565                 if (api_ver >= 2) {
3566                         memcpy((void *)&u.cmd.tx_mic_key,
3567                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3568                                IWL_MIC_KEY_SIZE);
3569
3570                         memcpy((void *)&u.cmd.rx_mic_key,
3571                                &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3572                                IWL_MIC_KEY_SIZE);
3573                         pn = atomic64_read(&key->tx_pn);
3574
3575                 } else {
3576                         u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3577                         for (i = 0; i < 5; i++)
3578                                 u.cmd_v1.tkip_rx_ttak[i] =
3579                                         cpu_to_le16(tkip_p1k[i]);
3580                 }
3581                 memcpy(u.cmd.common.key, key->key, key->keylen);
3582                 break;
3583         case WLAN_CIPHER_SUITE_CCMP:
3584                 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3585                 memcpy(u.cmd.common.key, key->key, key->keylen);
3586                 if (api_ver >= 2)
3587                         pn = atomic64_read(&key->tx_pn);
3588                 break;
3589         case WLAN_CIPHER_SUITE_WEP104:
3590                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3591                 fallthrough;
3592         case WLAN_CIPHER_SUITE_WEP40:
3593                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3594                 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3595                 break;
3596         case WLAN_CIPHER_SUITE_GCMP_256:
3597                 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3598                 fallthrough;
3599         case WLAN_CIPHER_SUITE_GCMP:
3600                 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3601                 memcpy(u.cmd.common.key, key->key, key->keylen);
3602                 if (api_ver >= 2)
3603                         pn = atomic64_read(&key->tx_pn);
3604                 break;
3605         default:
3606                 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3607                 memcpy(u.cmd.common.key, key->key, key->keylen);
3608         }
3609
3610         if (mcast)
3611                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3612         if (mfp)
3613                 key_flags |= cpu_to_le16(STA_KEY_MFP);
3614
3615         u.cmd.common.key_offset = key_offset;
3616         u.cmd.common.key_flags = key_flags;
3617         u.cmd.common.sta_id = sta_id;
3618
3619         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3620                 i = 0;
3621         else
3622                 i = -1;
3623
3624         for (; i < IEEE80211_NUM_TIDS; i++) {
3625                 struct ieee80211_key_seq seq = {};
3626                 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3627                 int rx_pn_len = 8;
3628                 /* there's a hole at 2/3 in FW format depending on version */
3629                 int hole = api_ver >= 3 ? 0 : 2;
3630
3631                 ieee80211_get_key_rx_seq(key, i, &seq);
3632
3633                 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3634                         rx_pn[0] = seq.tkip.iv16;
3635                         rx_pn[1] = seq.tkip.iv16 >> 8;
3636                         rx_pn[2 + hole] = seq.tkip.iv32;
3637                         rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3638                         rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3639                         rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3640                 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3641                         rx_pn = seq.hw.seq;
3642                         rx_pn_len = seq.hw.seq_len;
3643                 } else {
3644                         rx_pn[0] = seq.ccmp.pn[0];
3645                         rx_pn[1] = seq.ccmp.pn[1];
3646                         rx_pn[2 + hole] = seq.ccmp.pn[2];
3647                         rx_pn[3 + hole] = seq.ccmp.pn[3];
3648                         rx_pn[4 + hole] = seq.ccmp.pn[4];
3649                         rx_pn[5 + hole] = seq.ccmp.pn[5];
3650                 }
3651
3652                 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3653                                    rx_pn_len) > 0)
3654                         memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3655                                rx_pn_len);
3656         }
3657
3658         if (api_ver >= 2) {
3659                 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3660                 size = sizeof(u.cmd);
3661         } else {
3662                 size = sizeof(u.cmd_v1);
3663         }
3664
3665         status = ADD_STA_SUCCESS;
3666         if (cmd_flags & CMD_ASYNC)
3667                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3668                                            &u.cmd);
3669         else
3670                 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3671                                                   &u.cmd, &status);
3672
3673         switch (status) {
3674         case ADD_STA_SUCCESS:
3675                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3676                 break;
3677         default:
3678                 ret = -EIO;
3679                 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3680                 break;
3681         }
3682
3683         return ret;
3684 }
3685
3686 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3687                                  struct ieee80211_key_conf *keyconf,
3688                                  u8 sta_id, bool remove_key)
3689 {
3690         struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3691
3692         /* verify the key details match the required command's expectations */
3693         if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3694                     (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3695                      keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3696                     (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3697                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3698                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3699                 return -EINVAL;
3700
3701         if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3702                     keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3703                 return -EINVAL;
3704
3705         igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3706         igtk_cmd.sta_id = cpu_to_le32(sta_id);
3707
3708         if (remove_key) {
3709                 /* This is a valid situation for IGTK */
3710                 if (sta_id == IWL_MVM_INVALID_STA)
3711                         return 0;
3712
3713                 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3714         } else {
3715                 struct ieee80211_key_seq seq;
3716                 const u8 *pn;
3717
3718                 switch (keyconf->cipher) {
3719                 case WLAN_CIPHER_SUITE_AES_CMAC:
3720                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3721                         break;
3722                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3723                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3724                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3725                         break;
3726                 default:
3727                         return -EINVAL;
3728                 }
3729
3730                 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3731                 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3732                         igtk_cmd.ctrl_flags |=
3733                                 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3734                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3735                 pn = seq.aes_cmac.pn;
3736                 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3737                                                        ((u64) pn[4] << 8) |
3738                                                        ((u64) pn[3] << 16) |
3739                                                        ((u64) pn[2] << 24) |
3740                                                        ((u64) pn[1] << 32) |
3741                                                        ((u64) pn[0] << 40));
3742         }
3743
3744         IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3745                        remove_key ? "removing" : "installing",
3746                        keyconf->keyidx >= 6 ? "B" : "",
3747                        keyconf->keyidx, igtk_cmd.sta_id);
3748
3749         if (!iwl_mvm_has_new_rx_api(mvm)) {
3750                 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3751                         .ctrl_flags = igtk_cmd.ctrl_flags,
3752                         .key_id = igtk_cmd.key_id,
3753                         .sta_id = igtk_cmd.sta_id,
3754                         .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3755                 };
3756
3757                 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3758                        ARRAY_SIZE(igtk_cmd_v1.igtk));
3759                 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3760                                             sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3761         }
3762         return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3763                                     sizeof(igtk_cmd), &igtk_cmd);
3764 }
3765
3766
3767 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3768                                        struct ieee80211_vif *vif,
3769                                        struct ieee80211_sta *sta)
3770 {
3771         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3772
3773         if (sta)
3774                 return sta->addr;
3775
3776         if (vif->type == NL80211_IFTYPE_STATION &&
3777             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3778                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3779                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3780                                                 lockdep_is_held(&mvm->mutex));
3781                 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3782                         return NULL;
3783
3784                 return sta->addr;
3785         }
3786
3787
3788         return NULL;
3789 }
3790
3791 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3792                                  struct ieee80211_vif *vif,
3793                                  struct ieee80211_sta *sta,
3794                                  struct ieee80211_key_conf *keyconf,
3795                                  u8 key_offset,
3796                                  bool mcast)
3797 {
3798         const u8 *addr;
3799         struct ieee80211_key_seq seq;
3800         u16 p1k[5];
3801         u32 sta_id;
3802         bool mfp = false;
3803
3804         if (sta) {
3805                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3806
3807                 sta_id = mvm_sta->deflink.sta_id;
3808                 mfp = sta->mfp;
3809         } else if (vif->type == NL80211_IFTYPE_AP &&
3810                    !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3811                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3812
3813                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3814         } else {
3815                 IWL_ERR(mvm, "Failed to find station id\n");
3816                 return -EINVAL;
3817         }
3818
3819         if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3820                 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3821                 if (!addr) {
3822                         IWL_ERR(mvm, "Failed to find mac address\n");
3823                         return -EINVAL;
3824                 }
3825
3826                 /* get phase 1 key from mac80211 */
3827                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3828                 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3829
3830                 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3831                                             seq.tkip.iv32, p1k, 0, key_offset,
3832                                             mfp);
3833         }
3834
3835         return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3836                                     0, NULL, 0, key_offset, mfp);
3837 }
3838
3839 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3840                         struct ieee80211_vif *vif,
3841                         struct ieee80211_sta *sta,
3842                         struct ieee80211_key_conf *keyconf,
3843                         u8 key_offset)
3844 {
3845         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3846         struct iwl_mvm_sta *mvm_sta;
3847         u8 sta_id = IWL_MVM_INVALID_STA;
3848         int ret;
3849         static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3850
3851         lockdep_assert_held(&mvm->mutex);
3852
3853         if (vif->type != NL80211_IFTYPE_AP ||
3854             keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3855                 /* Get the station id from the mvm local station table */
3856                 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3857                 if (!mvm_sta) {
3858                         IWL_ERR(mvm, "Failed to find station\n");
3859                         return -EINVAL;
3860                 }
3861                 sta_id = mvm_sta->deflink.sta_id;
3862
3863                 /*
3864                  * It is possible that the 'sta' parameter is NULL, and thus
3865                  * there is a need to retrieve the sta from the local station
3866                  * table.
3867                  */
3868                 if (!sta) {
3869                         sta = rcu_dereference_protected(
3870                                 mvm->fw_id_to_mac_id[sta_id],
3871                                 lockdep_is_held(&mvm->mutex));
3872                         if (IS_ERR_OR_NULL(sta)) {
3873                                 IWL_ERR(mvm, "Invalid station id\n");
3874                                 return -EINVAL;
3875                         }
3876                 }
3877
3878                 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3879                         return -EINVAL;
3880         } else {
3881                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3882
3883                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3884         }
3885
3886         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3887             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3888             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3889                 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3890                 goto end;
3891         }
3892
3893         /* If the key_offset is not pre-assigned, we need to find a
3894          * new offset to use.  In normal cases, the offset is not
3895          * pre-assigned, but during HW_RESTART we want to reuse the
3896          * same indices, so we pass them when this function is called.
3897          *
3898          * In D3 entry, we need to hardcoded the indices (because the
3899          * firmware hardcodes the PTK offset to 0).  In this case, we
3900          * need to make sure we don't overwrite the hw_key_idx in the
3901          * keyconf structure, because otherwise we cannot configure
3902          * the original ones back when resuming.
3903          */
3904         if (key_offset == STA_KEY_IDX_INVALID) {
3905                 key_offset  = iwl_mvm_set_fw_key_idx(mvm);
3906                 if (key_offset == STA_KEY_IDX_INVALID)
3907                         return -ENOSPC;
3908                 keyconf->hw_key_idx = key_offset;
3909         }
3910
3911         ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3912         if (ret)
3913                 goto end;
3914
3915         /*
3916          * For WEP, the same key is used for multicast and unicast. Upload it
3917          * again, using the same key offset, and now pointing the other one
3918          * to the same key slot (offset).
3919          * If this fails, remove the original as well.
3920          */
3921         if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3922              keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3923             sta) {
3924                 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3925                                             key_offset, !mcast);
3926                 if (ret) {
3927                         __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3928                         goto end;
3929                 }
3930         }
3931
3932         __set_bit(key_offset, mvm->fw_key_table);
3933
3934 end:
3935         IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3936                       keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3937                       sta ? sta->addr : zero_addr, ret);
3938         return ret;
3939 }
3940
3941 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3942                            struct ieee80211_vif *vif,
3943                            struct ieee80211_sta *sta,
3944                            struct ieee80211_key_conf *keyconf)
3945 {
3946         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3947         struct iwl_mvm_sta *mvm_sta;
3948         u8 sta_id = IWL_MVM_INVALID_STA;
3949         int ret, i;
3950
3951         lockdep_assert_held(&mvm->mutex);
3952
3953         /* Get the station from the mvm local station table */
3954         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3955         if (mvm_sta)
3956                 sta_id = mvm_sta->deflink.sta_id;
3957         else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3958                 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3959
3960
3961         IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3962                       keyconf->keyidx, sta_id);
3963
3964         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3965             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3966             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3967                 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3968
3969         if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3970                 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3971                         keyconf->hw_key_idx);
3972                 return -ENOENT;
3973         }
3974
3975         /* track which key was deleted last */
3976         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3977                 if (mvm->fw_key_deleted[i] < U8_MAX)
3978                         mvm->fw_key_deleted[i]++;
3979         }
3980         mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3981
3982         if (sta && !mvm_sta) {
3983                 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3984                 return 0;
3985         }
3986
3987         ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3988         if (ret)
3989                 return ret;
3990
3991         /* delete WEP key twice to get rid of (now useless) offset */
3992         if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3993             keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
3994                 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
3995
3996         return ret;
3997 }
3998
3999 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4000                              struct ieee80211_vif *vif,
4001                              struct ieee80211_key_conf *keyconf,
4002                              struct ieee80211_sta *sta, u32 iv32,
4003                              u16 *phase1key)
4004 {
4005         struct iwl_mvm_sta *mvm_sta;
4006         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4007         bool mfp = sta ? sta->mfp : false;
4008
4009         rcu_read_lock();
4010
4011         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4012         if (WARN_ON_ONCE(!mvm_sta))
4013                 goto unlock;
4014         iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4015                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4016                              mfp);
4017
4018  unlock:
4019         rcu_read_unlock();
4020 }
4021
4022 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4023                                 struct ieee80211_sta *sta)
4024 {
4025         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4026         struct iwl_mvm_add_sta_cmd cmd = {
4027                 .add_modify = STA_MODE_MODIFY,
4028                 .sta_id = mvmsta->deflink.sta_id,
4029                 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4030                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4031         };
4032         int ret;
4033
4034         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4035                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4036         if (ret)
4037                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4038 }
4039
4040 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4041                                        struct ieee80211_sta *sta,
4042                                        enum ieee80211_frame_release_type reason,
4043                                        u16 cnt, u16 tids, bool more_data,
4044                                        bool single_sta_queue)
4045 {
4046         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4047         struct iwl_mvm_add_sta_cmd cmd = {
4048                 .add_modify = STA_MODE_MODIFY,
4049                 .sta_id = mvmsta->deflink.sta_id,
4050                 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4051                 .sleep_tx_count = cpu_to_le16(cnt),
4052                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4053         };
4054         int tid, ret;
4055         unsigned long _tids = tids;
4056
4057         /* convert TIDs to ACs - we don't support TSPEC so that's OK
4058          * Note that this field is reserved and unused by firmware not
4059          * supporting GO uAPSD, so it's safe to always do this.
4060          */
4061         for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4062                 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4063
4064         /* If we're releasing frames from aggregation or dqa queues then check
4065          * if all the queues that we're releasing frames from, combined, have:
4066          *  - more frames than the service period, in which case more_data
4067          *    needs to be set
4068          *  - fewer than 'cnt' frames, in which case we need to adjust the
4069          *    firmware command (but do that unconditionally)
4070          */
4071         if (single_sta_queue) {
4072                 int remaining = cnt;
4073                 int sleep_tx_count;
4074
4075                 spin_lock_bh(&mvmsta->lock);
4076                 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4077                         struct iwl_mvm_tid_data *tid_data;
4078                         u16 n_queued;
4079
4080                         tid_data = &mvmsta->tid_data[tid];
4081
4082                         n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4083                         if (n_queued > remaining) {
4084                                 more_data = true;
4085                                 remaining = 0;
4086                                 break;
4087                         }
4088                         remaining -= n_queued;
4089                 }
4090                 sleep_tx_count = cnt - remaining;
4091                 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4092                         mvmsta->sleep_tx_count = sleep_tx_count;
4093                 spin_unlock_bh(&mvmsta->lock);
4094
4095                 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4096                 if (WARN_ON(cnt - remaining == 0)) {
4097                         ieee80211_sta_eosp(sta);
4098                         return;
4099                 }
4100         }
4101
4102         /* Note: this is ignored by firmware not supporting GO uAPSD */
4103         if (more_data)
4104                 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4105
4106         if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4107                 mvmsta->next_status_eosp = true;
4108                 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4109         } else {
4110                 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4111         }
4112
4113         /* block the Tx queues until the FW updated the sleep Tx count */
4114         iwl_trans_block_txq_ptrs(mvm->trans, true);
4115
4116         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4117                                    CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
4118                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4119         if (ret)
4120                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4121 }
4122
4123 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4124                            struct iwl_rx_cmd_buffer *rxb)
4125 {
4126         struct iwl_rx_packet *pkt = rxb_addr(rxb);
4127         struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4128         struct ieee80211_sta *sta;
4129         u32 sta_id = le32_to_cpu(notif->sta_id);
4130
4131         if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4132                 return;
4133
4134         rcu_read_lock();
4135         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4136         if (!IS_ERR_OR_NULL(sta))
4137                 ieee80211_sta_eosp(sta);
4138         rcu_read_unlock();
4139 }
4140
4141 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4142                                    struct iwl_mvm_sta *mvmsta,
4143                                    bool disable)
4144 {
4145         struct iwl_mvm_add_sta_cmd cmd = {
4146                 .add_modify = STA_MODE_MODIFY,
4147                 .sta_id = mvmsta->deflink.sta_id,
4148                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4149                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4150                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4151         };
4152         int ret;
4153
4154         if (mvm->mld_api_is_used) {
4155                 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4156                 return;
4157         }
4158
4159         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4160                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4161         if (ret)
4162                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4163 }
4164
4165 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4166                                       struct ieee80211_sta *sta,
4167                                       bool disable)
4168 {
4169         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4170
4171         if (mvm->mld_api_is_used) {
4172                 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4173                 return;
4174         }
4175
4176         spin_lock_bh(&mvm_sta->lock);
4177
4178         if (mvm_sta->disable_tx == disable) {
4179                 spin_unlock_bh(&mvm_sta->lock);
4180                 return;
4181         }
4182
4183         mvm_sta->disable_tx = disable;
4184
4185         /*
4186          * If sta PS state is handled by mac80211, tell it to start/stop
4187          * queuing tx for this station.
4188          */
4189         if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4190                 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4191
4192         iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4193
4194         spin_unlock_bh(&mvm_sta->lock);
4195 }
4196
4197 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4198                                               struct iwl_mvm_vif *mvmvif,
4199                                               struct iwl_mvm_int_sta *sta,
4200                                               bool disable)
4201 {
4202         u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4203         struct iwl_mvm_add_sta_cmd cmd = {
4204                 .add_modify = STA_MODE_MODIFY,
4205                 .sta_id = sta->sta_id,
4206                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4207                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4208                 .mac_id_n_color = cpu_to_le32(id),
4209         };
4210         int ret;
4211
4212         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4213                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4214         if (ret)
4215                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4216 }
4217
4218 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4219                                        struct iwl_mvm_vif *mvmvif,
4220                                        bool disable)
4221 {
4222         struct ieee80211_sta *sta;
4223         struct iwl_mvm_sta *mvm_sta;
4224         int i;
4225
4226         if (mvm->mld_api_is_used) {
4227                 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable);
4228                 return;
4229         }
4230
4231         rcu_read_lock();
4232
4233         /* Block/unblock all the stations of the given mvmvif */
4234         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4235                 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4236                 if (IS_ERR_OR_NULL(sta))
4237                         continue;
4238
4239                 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4240                 if (mvm_sta->mac_id_n_color !=
4241                     FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4242                         continue;
4243
4244                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4245         }
4246
4247         rcu_read_unlock();
4248
4249         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4250                 return;
4251
4252         /* Need to block/unblock also multicast station */
4253         if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA)
4254                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4255                                                   &mvmvif->deflink.mcast_sta,
4256                                                   disable);
4257
4258         /*
4259          * Only unblock the broadcast station (FW blocks it for immediate
4260          * quiet, not the driver)
4261          */
4262         if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA)
4263                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4264                                                   &mvmvif->deflink.bcast_sta,
4265                                                   disable);
4266 }
4267
4268 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4269 {
4270         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4271         struct iwl_mvm_sta *mvmsta;
4272
4273         rcu_read_lock();
4274
4275         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4276
4277         if (mvmsta)
4278                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4279
4280         rcu_read_unlock();
4281 }
4282
4283 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4284 {
4285         u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4286
4287         /*
4288          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4289          * to align the wrap around of ssn so we compare relevant values.
4290          */
4291         if (mvm->trans->trans_cfg->gen2)
4292                 sn &= 0xff;
4293
4294         return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4295 }
4296
4297 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4298                          struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4299                          u8 *key, u32 key_len)
4300 {
4301         int ret;
4302         u16 queue;
4303         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4304         struct ieee80211_key_conf *keyconf;
4305         unsigned int wdg_timeout =
4306                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
4307         bool mld = iwl_mvm_has_mld_api(mvm->fw);
4308         u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK;
4309
4310         ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4311                                        NL80211_IFTYPE_UNSPECIFIED, type);
4312         if (ret)
4313                 return ret;
4314
4315         if (mld)
4316                 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4317                                                          mvmvif->deflink.fw_link_id,
4318                                                          &queue,
4319                                                          IWL_MAX_TID_COUNT,
4320                                                          &wdg_timeout);
4321         else
4322                 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4323                                                      mvmvif->color, addr, sta,
4324                                                      &queue,
4325                                                      IWL_MVM_TX_FIFO_BE);
4326         if (ret)
4327                 goto out;
4328
4329         keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL);
4330         if (!keyconf) {
4331                 ret = -ENOBUFS;
4332                 goto out;
4333         }
4334
4335         keyconf->cipher = cipher;
4336         memcpy(keyconf->key, key, key_len);
4337         keyconf->keylen = key_len;
4338         keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4339
4340         if (mld) {
4341                 /* The MFP flag is set according to the station mfp field. Since
4342                  * we don't have a station, set it manually.
4343                  */
4344                 u32 key_flags =
4345                         iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4346                         IWL_SEC_KEY_FLAG_MFP;
4347                 u32 sta_mask = BIT(sta->sta_id);
4348
4349                 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4350         } else {
4351                 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4352                                            0, NULL, 0, 0, true);
4353         }
4354
4355         kfree(keyconf);
4356         return 0;
4357 out:
4358         iwl_mvm_dealloc_int_sta(mvm, sta);
4359         return ret;
4360 }
4361
4362 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4363                                    struct ieee80211_vif *vif,
4364                                    u32 id)
4365 {
4366         struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4367                 .id = cpu_to_le32(id),
4368         };
4369         int ret;
4370
4371         ret = iwl_mvm_send_cmd_pdu(mvm,
4372                                    WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4373                                    CMD_ASYNC,
4374                                    sizeof(cancel_channel_switch_cmd),
4375                                    &cancel_channel_switch_cmd);
4376         if (ret)
4377                 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4378 }