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 1k 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                 unsigned int link_id;
 869
 870                 for (link_id = 0;
 871                      link_id < ARRAY_SIZE(mvmsta->link);
 872                      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         } else {
 883                 sta_mask |= BIT(sta_id);
 884         }
 885
 886         if (!sta_mask)
 887                 return -EINVAL;
 888
 889         do {
 890                 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
 891                                             tid, size, timeout);
 892
 893                 if (queue < 0)
 894                         IWL_DEBUG_TX_QUEUES(mvm,
 895                                             "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n",
 896                                             size, sta_mask, tid, queue);
 897                 size /= 2;
 898         } while (queue < 0 && size >= 16);
 899
 900         if (queue < 0)
 901                 return queue;
 902
 903         IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
 904                             queue, sta_mask, tid);
 905
 906         return queue;
 907 }
 908
 909 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
 910                                         struct ieee80211_sta *sta, u8 ac,
 911                                         int tid)
 912 {
 913         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 914         struct iwl_mvm_txq *mvmtxq =
 915                 iwl_mvm_txq_from_tid(sta, tid);
 916         unsigned int wdg_timeout =
 917                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
 918         int queue = -1;
 919
 920         lockdep_assert_held(&mvm->mutex);
 921
 922         IWL_DEBUG_TX_QUEUES(mvm,
 923                             "Allocating queue for sta %d on tid %d\n",
 924                             mvmsta->deflink.sta_id, tid);
 925         queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
 926                                         tid, wdg_timeout);
 927         if (queue < 0)
 928                 return queue;
 929
 930         mvmtxq->txq_id = queue;
 931         mvm->tvqm_info[queue].txq_tid = tid;
 932         mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
 933
 934         IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
 935
 936         spin_lock_bh(&mvmsta->lock);
 937         mvmsta->tid_data[tid].txq_id = queue;
 938         spin_unlock_bh(&mvmsta->lock);
 939
 940         return 0;
 941 }
 942
 943 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
 944                                        struct ieee80211_sta *sta,
 945                                        int queue, u8 sta_id, u8 tid)
 946 {
 947         bool enable_queue = true;
 948
 949         /* Make sure this TID isn't already enabled */
 950         if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
 951                 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
 952                         queue, tid);
 953                 return false;
 954         }
 955
 956         /* Update mappings and refcounts */
 957         if (mvm->queue_info[queue].tid_bitmap)
 958                 enable_queue = false;
 959
 960         mvm->queue_info[queue].tid_bitmap |= BIT(tid);
 961         mvm->queue_info[queue].ra_sta_id = sta_id;
 962
 963         if (enable_queue) {
 964                 if (tid != IWL_MAX_TID_COUNT)
 965                         mvm->queue_info[queue].mac80211_ac =
 966                                 tid_to_mac80211_ac[tid];
 967                 else
 968                         mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
 969
 970                 mvm->queue_info[queue].txq_tid = tid;
 971         }
 972
 973         if (sta) {
 974                 struct iwl_mvm_txq *mvmtxq =
 975                         iwl_mvm_txq_from_tid(sta, tid);
 976
 977                 mvmtxq->txq_id = queue;
 978         }
 979
 980         IWL_DEBUG_TX_QUEUES(mvm,
 981                             "Enabling TXQ #%d tids=0x%x\n",
 982                             queue, mvm->queue_info[queue].tid_bitmap);
 983
 984         return enable_queue;
 985 }
 986
 987 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 988                                int queue, u16 ssn,
 989                                const struct iwl_trans_txq_scd_cfg *cfg,
 990                                unsigned int wdg_timeout)
 991 {
 992         struct iwl_scd_txq_cfg_cmd cmd = {
 993                 .scd_queue = queue,
 994                 .action = SCD_CFG_ENABLE_QUEUE,
 995                 .window = cfg->frame_limit,
 996                 .sta_id = cfg->sta_id,
 997                 .ssn = cpu_to_le16(ssn),
 998                 .tx_fifo = cfg->fifo,
 999                 .aggregate = cfg->aggregate,
1000                 .tid = cfg->tid,
1001         };
1002         bool inc_ssn;
1003
1004         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1005                 return false;
1006
1007         /* Send the enabling command if we need to */
1008         if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
1009                 return false;
1010
1011         inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
1012                                            NULL, wdg_timeout);
1013         if (inc_ssn)
1014                 le16_add_cpu(&cmd.ssn, 1);
1015
1016         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1017              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1018
1019         return inc_ssn;
1020 }
1021
1022 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1023 {
1024         struct iwl_scd_txq_cfg_cmd cmd = {
1025                 .scd_queue = queue,
1026                 .action = SCD_CFG_UPDATE_QUEUE_TID,
1027         };
1028         int tid;
1029         unsigned long tid_bitmap;
1030         int ret;
1031
1032         lockdep_assert_held(&mvm->mutex);
1033
1034         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1035                 return;
1036
1037         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1038
1039         if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1040                 return;
1041
1042         /* Find any TID for queue */
1043         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1044         cmd.tid = tid;
1045         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1046
1047         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1048         if (ret) {
1049                 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1050                         queue, ret);
1051                 return;
1052         }
1053
1054         mvm->queue_info[queue].txq_tid = tid;
1055         IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1056                             queue, tid);
1057 }
1058
1059 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1060 {
1061         struct ieee80211_sta *sta;
1062         struct iwl_mvm_sta *mvmsta;
1063         u8 sta_id;
1064         int tid = -1;
1065         unsigned long tid_bitmap;
1066         unsigned int wdg_timeout;
1067         int ssn;
1068         int ret = true;
1069
1070         /* queue sharing is disabled on new TX path */
1071         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1072                 return;
1073
1074         lockdep_assert_held(&mvm->mutex);
1075
1076         sta_id = mvm->queue_info[queue].ra_sta_id;
1077         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1078
1079         /* Find TID for queue, and make sure it is the only one on the queue */
1080         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1081         if (tid_bitmap != BIT(tid)) {
1082                 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1083                         queue, tid_bitmap);
1084                 return;
1085         }
1086
1087         IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1088                             tid);
1089
1090         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1091                                         lockdep_is_held(&mvm->mutex));
1092
1093         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1094                 return;
1095
1096         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1097         wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1098
1099         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1100
1101         ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1102                                      tid_to_mac80211_ac[tid], ssn,
1103                                      wdg_timeout, true,
1104                                      iwl_mvm_txq_from_tid(sta, tid));
1105         if (ret) {
1106                 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1107                 return;
1108         }
1109
1110         /* If aggs should be turned back on - do it */
1111         if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1112                 struct iwl_mvm_add_sta_cmd cmd = {0};
1113
1114                 mvmsta->tid_disable_agg &= ~BIT(tid);
1115
1116                 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1117                 cmd.sta_id = mvmsta->deflink.sta_id;
1118                 cmd.add_modify = STA_MODE_MODIFY;
1119                 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1120                 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1121                 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1122
1123                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1124                                            iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1125                 if (!ret) {
1126                         IWL_DEBUG_TX_QUEUES(mvm,
1127                                             "TXQ #%d is now aggregated again\n",
1128                                             queue);
1129
1130                         /* Mark queue intenally as aggregating again */
1131                         iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1132                 }
1133         }
1134
1135         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1136 }
1137
1138 /*
1139  * Remove inactive TIDs of a given queue.
1140  * If all queue TIDs are inactive - mark the queue as inactive
1141  * If only some the queue TIDs are inactive - unmap them from the queue
1142  *
1143  * Returns %true if all TIDs were removed and the queue could be reused.
1144  */
1145 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1146                                          struct iwl_mvm_sta *mvmsta, int queue,
1147                                          unsigned long tid_bitmap,
1148                                          unsigned long *unshare_queues,
1149                                          unsigned long *changetid_queues)
1150 {
1151         unsigned int tid;
1152
1153         lockdep_assert_held(&mvmsta->lock);
1154         lockdep_assert_held(&mvm->mutex);
1155
1156         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1157                 return false;
1158
1159         /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1160         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1161                 /* If some TFDs are still queued - don't mark TID as inactive */
1162                 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1163                         tid_bitmap &= ~BIT(tid);
1164
1165                 /* Don't mark as inactive any TID that has an active BA */
1166                 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1167                         tid_bitmap &= ~BIT(tid);
1168         }
1169
1170         /* If all TIDs in the queue are inactive - return it can be reused */
1171         if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1172                 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1173                 return true;
1174         }
1175
1176         /*
1177          * If we are here, this is a shared queue and not all TIDs timed-out.
1178          * Remove the ones that did.
1179          */
1180         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1181                 u16 q_tid_bitmap;
1182
1183                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1184                 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1185
1186                 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1187
1188                 /*
1189                  * We need to take into account a situation in which a TXQ was
1190                  * allocated to TID x, and then turned shared by adding TIDs y
1191                  * and z. If TID x becomes inactive and is removed from the TXQ,
1192                  * ownership must be given to one of the remaining TIDs.
1193                  * This is mainly because if TID x continues - a new queue can't
1194                  * be allocated for it as long as it is an owner of another TXQ.
1195                  *
1196                  * Mark this queue in the right bitmap, we'll send the command
1197                  * to the firmware later.
1198                  */
1199                 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1200                         set_bit(queue, changetid_queues);
1201
1202                 IWL_DEBUG_TX_QUEUES(mvm,
1203                                     "Removing inactive TID %d from shared Q:%d\n",
1204                                     tid, queue);
1205         }
1206
1207         IWL_DEBUG_TX_QUEUES(mvm,
1208                             "TXQ #%d left with tid bitmap 0x%x\n", queue,
1209                             mvm->queue_info[queue].tid_bitmap);
1210
1211         /*
1212          * There may be different TIDs with the same mac queues, so make
1213          * sure all TIDs have existing corresponding mac queues enabled
1214          */
1215         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1216
1217         /* If the queue is marked as shared - "unshare" it */
1218         if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1219             mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1220                 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1221                                     queue);
1222                 set_bit(queue, unshare_queues);
1223         }
1224
1225         return false;
1226 }
1227
1228 /*
1229  * Check for inactivity - this includes checking if any queue
1230  * can be unshared and finding one (and only one) that can be
1231  * reused.
1232  * This function is also invoked as a sort of clean-up task,
1233  * in which case @alloc_for_sta is IWL_MVM_INVALID_STA.
1234  *
1235  * Returns the queue number, or -ENOSPC.
1236  */
1237 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1238 {
1239         unsigned long now = jiffies;
1240         unsigned long unshare_queues = 0;
1241         unsigned long changetid_queues = 0;
1242         int i, ret, free_queue = -ENOSPC;
1243         struct ieee80211_sta *queue_owner  = NULL;
1244
1245         lockdep_assert_held(&mvm->mutex);
1246
1247         if (iwl_mvm_has_new_tx_api(mvm))
1248                 return -ENOSPC;
1249
1250         rcu_read_lock();
1251
1252         /* we skip the CMD queue below by starting at 1 */
1253         BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1254
1255         for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1256                 struct ieee80211_sta *sta;
1257                 struct iwl_mvm_sta *mvmsta;
1258                 u8 sta_id;
1259                 int tid;
1260                 unsigned long inactive_tid_bitmap = 0;
1261                 unsigned long queue_tid_bitmap;
1262
1263                 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1264                 if (!queue_tid_bitmap)
1265                         continue;
1266
1267                 /* If TXQ isn't in active use anyway - nothing to do here... */
1268                 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1269                     mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1270                         continue;
1271
1272                 /* Check to see if there are inactive TIDs on this queue */
1273                 for_each_set_bit(tid, &queue_tid_bitmap,
1274                                  IWL_MAX_TID_COUNT + 1) {
1275                         if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1276                                        IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1277                                 continue;
1278
1279                         inactive_tid_bitmap |= BIT(tid);
1280                 }
1281
1282                 /* If all TIDs are active - finish check on this queue */
1283                 if (!inactive_tid_bitmap)
1284                         continue;
1285
1286                 /*
1287                  * If we are here - the queue hadn't been served recently and is
1288                  * in use
1289                  */
1290
1291                 sta_id = mvm->queue_info[i].ra_sta_id;
1292                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1293
1294                 /*
1295                  * If the STA doesn't exist anymore, it isn't an error. It could
1296                  * be that it was removed since getting the queues, and in this
1297                  * case it should've inactivated its queues anyway.
1298                  */
1299                 if (IS_ERR_OR_NULL(sta))
1300                         continue;
1301
1302                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1303
1304                 spin_lock_bh(&mvmsta->lock);
1305                 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1306                                                    inactive_tid_bitmap,
1307                                                    &unshare_queues,
1308                                                    &changetid_queues);
1309                 if (ret && free_queue < 0) {
1310                         queue_owner = sta;
1311                         free_queue = i;
1312                 }
1313                 /* only unlock sta lock - we still need the queue info lock */
1314                 spin_unlock_bh(&mvmsta->lock);
1315         }
1316
1317
1318         /* Reconfigure queues requiring reconfiguation */
1319         for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1320                 iwl_mvm_unshare_queue(mvm, i);
1321         for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1322                 iwl_mvm_change_queue_tid(mvm, i);
1323
1324         rcu_read_unlock();
1325
1326         if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) {
1327                 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1328                                                   alloc_for_sta);
1329                 if (ret)
1330                         return ret;
1331         }
1332
1333         return free_queue;
1334 }
1335
1336 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1337                                    struct ieee80211_sta *sta, u8 ac, int tid)
1338 {
1339         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1340         struct iwl_trans_txq_scd_cfg cfg = {
1341                 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1342                 .sta_id = mvmsta->deflink.sta_id,
1343                 .tid = tid,
1344                 .frame_limit = IWL_FRAME_LIMIT,
1345         };
1346         unsigned int wdg_timeout =
1347                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1348         int queue = -1;
1349         u16 queue_tmp;
1350         unsigned long disable_agg_tids = 0;
1351         enum iwl_mvm_agg_state queue_state;
1352         bool shared_queue = false, inc_ssn;
1353         int ssn;
1354         unsigned long tfd_queue_mask;
1355         int ret;
1356
1357         lockdep_assert_held(&mvm->mutex);
1358
1359         if (iwl_mvm_has_new_tx_api(mvm))
1360                 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1361
1362         spin_lock_bh(&mvmsta->lock);
1363         tfd_queue_mask = mvmsta->tfd_queue_msk;
1364         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1365         spin_unlock_bh(&mvmsta->lock);
1366
1367         if (tid == IWL_MAX_TID_COUNT) {
1368                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1369                                                 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1370                                                 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1371                 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1372                         IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1373                                             queue);
1374
1375                 /* If no such queue is found, we'll use a DATA queue instead */
1376         }
1377
1378         if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1379             (mvm->queue_info[mvmsta->reserved_queue].status ==
1380                         IWL_MVM_QUEUE_RESERVED)) {
1381                 queue = mvmsta->reserved_queue;
1382                 mvm->queue_info[queue].reserved = true;
1383                 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1384         }
1385
1386         if (queue < 0)
1387                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1388                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1389                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1390         if (queue < 0) {
1391                 /* try harder - perhaps kill an inactive queue */
1392                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1393         }
1394
1395         /* No free queue - we'll have to share */
1396         if (queue <= 0) {
1397                 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1398                 if (queue > 0) {
1399                         shared_queue = true;
1400                         mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1401                 }
1402         }
1403
1404         /*
1405          * Mark TXQ as ready, even though it hasn't been fully configured yet,
1406          * to make sure no one else takes it.
1407          * This will allow avoiding re-acquiring the lock at the end of the
1408          * configuration. On error we'll mark it back as free.
1409          */
1410         if (queue > 0 && !shared_queue)
1411                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1412
1413         /* This shouldn't happen - out of queues */
1414         if (WARN_ON(queue <= 0)) {
1415                 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1416                         tid, cfg.sta_id);
1417                 return queue;
1418         }
1419
1420         /*
1421          * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1422          * but for configuring the SCD to send A-MPDUs we need to mark the queue
1423          * as aggregatable.
1424          * Mark all DATA queues as allowing to be aggregated at some point
1425          */
1426         cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1427                          queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1428
1429         IWL_DEBUG_TX_QUEUES(mvm,
1430                             "Allocating %squeue #%d to sta %d on tid %d\n",
1431                             shared_queue ? "shared " : "", queue,
1432                             mvmsta->deflink.sta_id, tid);
1433
1434         if (shared_queue) {
1435                 /* Disable any open aggs on this queue */
1436                 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1437
1438                 if (disable_agg_tids) {
1439                         IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1440                                             queue);
1441                         iwl_mvm_invalidate_sta_queue(mvm, queue,
1442                                                      disable_agg_tids, false);
1443                 }
1444         }
1445
1446         inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1447
1448         /*
1449          * Mark queue as shared in transport if shared
1450          * Note this has to be done after queue enablement because enablement
1451          * can also set this value, and there is no indication there to shared
1452          * queues
1453          */
1454         if (shared_queue)
1455                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1456
1457         spin_lock_bh(&mvmsta->lock);
1458         /*
1459          * This looks racy, but it is not. We have only one packet for
1460          * this ra/tid in our Tx path since we stop the Qdisc when we
1461          * need to allocate a new TFD queue.
1462          */
1463         if (inc_ssn) {
1464                 mvmsta->tid_data[tid].seq_number += 0x10;
1465                 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1466         }
1467         mvmsta->tid_data[tid].txq_id = queue;
1468         mvmsta->tfd_queue_msk |= BIT(queue);
1469         queue_state = mvmsta->tid_data[tid].state;
1470
1471         if (mvmsta->reserved_queue == queue)
1472                 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1473         spin_unlock_bh(&mvmsta->lock);
1474
1475         if (!shared_queue) {
1476                 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1477                 if (ret)
1478                         goto out_err;
1479
1480                 /* If we need to re-enable aggregations... */
1481                 if (queue_state == IWL_AGG_ON) {
1482                         ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1483                         if (ret)
1484                                 goto out_err;
1485                 }
1486         } else {
1487                 /* Redirect queue, if needed */
1488                 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1489                                              wdg_timeout, false,
1490                                              iwl_mvm_txq_from_tid(sta, tid));
1491                 if (ret)
1492                         goto out_err;
1493         }
1494
1495         return 0;
1496
1497 out_err:
1498         queue_tmp = queue;
1499         iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1500
1501         return ret;
1502 }
1503
1504 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1505 {
1506         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1507                                            add_stream_wk);
1508
1509         mutex_lock(&mvm->mutex);
1510
1511         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1512
1513         while (!list_empty(&mvm->add_stream_txqs)) {
1514                 struct iwl_mvm_txq *mvmtxq;
1515                 struct ieee80211_txq *txq;
1516                 u8 tid;
1517
1518                 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1519                                           struct iwl_mvm_txq, list);
1520
1521                 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1522                                    drv_priv);
1523                 tid = txq->tid;
1524                 if (tid == IEEE80211_NUM_TIDS)
1525                         tid = IWL_MAX_TID_COUNT;
1526
1527                 /*
1528                  * We can't really do much here, but if this fails we can't
1529                  * transmit anyway - so just don't transmit the frame etc.
1530                  * and let them back up ... we've tried our best to allocate
1531                  * a queue in the function itself.
1532                  */
1533                 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1534                         spin_lock_bh(&mvm->add_stream_lock);
1535                         list_del_init(&mvmtxq->list);
1536                         spin_unlock_bh(&mvm->add_stream_lock);
1537                         continue;
1538                 }
1539
1540                 /* now we're ready, any remaining races/concurrency will be
1541                  * handled in iwl_mvm_mac_itxq_xmit()
1542                  */
1543                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1544
1545                 local_bh_disable();
1546                 spin_lock(&mvm->add_stream_lock);
1547                 list_del_init(&mvmtxq->list);
1548                 spin_unlock(&mvm->add_stream_lock);
1549
1550                 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1551                 local_bh_enable();
1552         }
1553
1554         mutex_unlock(&mvm->mutex);
1555 }
1556
1557 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1558                                       struct ieee80211_sta *sta,
1559                                       enum nl80211_iftype vif_type)
1560 {
1561         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1562         int queue;
1563
1564         /* queue reserving is disabled on new TX path */
1565         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1566                 return 0;
1567
1568         /* run the general cleanup/unsharing of queues */
1569         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1570
1571         /* Make sure we have free resources for this STA */
1572         if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1573             !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1574             (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1575              IWL_MVM_QUEUE_FREE))
1576                 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1577         else
1578                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1579                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1580                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1581         if (queue < 0) {
1582                 /* try again - this time kick out a queue if needed */
1583                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1584                 if (queue < 0) {
1585                         IWL_ERR(mvm, "No available queues for new station\n");
1586                         return -ENOSPC;
1587                 }
1588         }
1589         mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1590
1591         mvmsta->reserved_queue = queue;
1592
1593         IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1594                             queue, mvmsta->deflink.sta_id);
1595
1596         return 0;
1597 }
1598
1599 /*
1600  * In DQA mode, after a HW restart the queues should be allocated as before, in
1601  * order to avoid race conditions when there are shared queues. This function
1602  * does the re-mapping and queue allocation.
1603  *
1604  * Note that re-enabling aggregations isn't done in this function.
1605  */
1606 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1607                                           struct ieee80211_sta *sta)
1608 {
1609         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1610         unsigned int wdg =
1611                 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1612         int i;
1613         struct iwl_trans_txq_scd_cfg cfg = {
1614                 .sta_id = mvm_sta->deflink.sta_id,
1615                 .frame_limit = IWL_FRAME_LIMIT,
1616         };
1617
1618         /* Make sure reserved queue is still marked as such (if allocated) */
1619         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1620                 mvm->queue_info[mvm_sta->reserved_queue].status =
1621                         IWL_MVM_QUEUE_RESERVED;
1622
1623         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1624                 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1625                 int txq_id = tid_data->txq_id;
1626                 int ac;
1627
1628                 if (txq_id == IWL_MVM_INVALID_QUEUE)
1629                         continue;
1630
1631                 ac = tid_to_mac80211_ac[i];
1632
1633                 if (iwl_mvm_has_new_tx_api(mvm)) {
1634                         IWL_DEBUG_TX_QUEUES(mvm,
1635                                             "Re-mapping sta %d tid %d\n",
1636                                             mvm_sta->deflink.sta_id, i);
1637                         txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1638                                                          mvm_sta->deflink.sta_id,
1639                                                          i, wdg);
1640                         /*
1641                          * on failures, just set it to IWL_MVM_INVALID_QUEUE
1642                          * to try again later, we have no other good way of
1643                          * failing here
1644                          */
1645                         if (txq_id < 0)
1646                                 txq_id = IWL_MVM_INVALID_QUEUE;
1647                         tid_data->txq_id = txq_id;
1648
1649                         /*
1650                          * Since we don't set the seq number after reset, and HW
1651                          * sets it now, FW reset will cause the seq num to start
1652                          * at 0 again, so driver will need to update it
1653                          * internally as well, so it keeps in sync with real val
1654                          */
1655                         tid_data->seq_number = 0;
1656                 } else {
1657                         u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1658
1659                         cfg.tid = i;
1660                         cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1661                         cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1662                                          txq_id ==
1663                                          IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1664
1665                         IWL_DEBUG_TX_QUEUES(mvm,
1666                                             "Re-mapping sta %d tid %d to queue %d\n",
1667                                             mvm_sta->deflink.sta_id, i,
1668                                             txq_id);
1669
1670                         iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1671                         mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1672                 }
1673         }
1674 }
1675
1676 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1677                                       struct iwl_mvm_int_sta *sta,
1678                                       const u8 *addr,
1679                                       u16 mac_id, u16 color)
1680 {
1681         struct iwl_mvm_add_sta_cmd cmd;
1682         int ret;
1683         u32 status = ADD_STA_SUCCESS;
1684
1685         lockdep_assert_held(&mvm->mutex);
1686
1687         memset(&cmd, 0, sizeof(cmd));
1688         cmd.sta_id = sta->sta_id;
1689
1690         if (iwl_mvm_has_new_station_api(mvm->fw) &&
1691             sta->type == IWL_STA_AUX_ACTIVITY)
1692                 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1693         else
1694                 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1695                                                                      color));
1696
1697         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1698                 cmd.station_type = sta->type;
1699
1700         if (!iwl_mvm_has_new_tx_api(mvm))
1701                 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1702         cmd.tid_disable_tx = cpu_to_le16(0xffff);
1703
1704         if (addr)
1705                 memcpy(cmd.addr, addr, ETH_ALEN);
1706
1707         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1708                                           iwl_mvm_add_sta_cmd_size(mvm),
1709                                           &cmd, &status);
1710         if (ret)
1711                 return ret;
1712
1713         switch (status & IWL_ADD_STA_STATUS_MASK) {
1714         case ADD_STA_SUCCESS:
1715                 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1716                 return 0;
1717         default:
1718                 ret = -EIO;
1719                 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1720                         status);
1721                 break;
1722         }
1723         return ret;
1724 }
1725
1726 /* Initialize driver data of a new sta */
1727 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1728                      struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1729 {
1730         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1731         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1732         struct iwl_mvm_rxq_dup_data *dup_data;
1733         int i, ret = 0;
1734
1735         lockdep_assert_held(&mvm->mutex);
1736
1737         mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1738                                                       mvmvif->color);
1739         mvm_sta->vif = vif;
1740
1741         /* for MLD sta_id(s) should be allocated for each link before calling
1742          * this function
1743          */
1744         if (!mvm->mld_api_is_used) {
1745                 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
1746                         return -EINVAL;
1747
1748                 mvm_sta->deflink.sta_id = sta_id;
1749                 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1750
1751                 if (!mvm->trans->trans_cfg->gen2)
1752                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1753                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1754                 else
1755                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1756                                 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1757         }
1758
1759         mvm_sta->tt_tx_protection = false;
1760         mvm_sta->sta_type = sta_type;
1761
1762         mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1763
1764         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1765                 /*
1766                  * Mark all queues for this STA as unallocated and defer TX
1767                  * frames until the queue is allocated
1768                  */
1769                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1770         }
1771
1772         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1773                 struct iwl_mvm_txq *mvmtxq =
1774                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1775
1776                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1777                 INIT_LIST_HEAD(&mvmtxq->list);
1778                 atomic_set(&mvmtxq->tx_request, 0);
1779         }
1780
1781         if (iwl_mvm_has_new_rx_api(mvm)) {
1782                 int q;
1783
1784                 dup_data = kcalloc(mvm->trans->num_rx_queues,
1785                                    sizeof(*dup_data), GFP_KERNEL);
1786                 if (!dup_data)
1787                         return -ENOMEM;
1788                 /*
1789                  * Initialize all the last_seq values to 0xffff which can never
1790                  * compare equal to the frame's seq_ctrl in the check in
1791                  * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1792                  * number and fragmented packets don't reach that function.
1793                  *
1794                  * This thus allows receiving a packet with seqno 0 and the
1795                  * retry bit set as the very first packet on a new TID.
1796                  */
1797                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1798                         memset(dup_data[q].last_seq, 0xff,
1799                                sizeof(dup_data[q].last_seq));
1800                 mvm_sta->dup_data = dup_data;
1801         }
1802
1803         if (!iwl_mvm_has_new_tx_api(mvm)) {
1804                 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1805                                                  ieee80211_vif_type_p2p(vif));
1806                 if (ret)
1807                         return ret;
1808         }
1809
1810         /*
1811          * if rs is registered with mac80211, then "add station" will be handled
1812          * via the corresponding ops, otherwise need to notify rate scaling here
1813          */
1814         if (iwl_mvm_has_tlc_offload(mvm))
1815                 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1816         else
1817                 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1818
1819         iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1820
1821         return 0;
1822 }
1823
1824 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1825                     struct ieee80211_vif *vif,
1826                     struct ieee80211_sta *sta)
1827 {
1828         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1829         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1830         int ret, sta_id;
1831         bool sta_update = false;
1832         unsigned int sta_flags = 0;
1833
1834         lockdep_assert_held(&mvm->mutex);
1835
1836         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1837                 sta_id = iwl_mvm_find_free_sta_id(mvm,
1838                                                   ieee80211_vif_type_p2p(vif));
1839         else
1840                 sta_id = mvm_sta->deflink.sta_id;
1841
1842         if (sta_id == IWL_MVM_INVALID_STA)
1843                 return -ENOSPC;
1844
1845         spin_lock_init(&mvm_sta->lock);
1846
1847         /* if this is a HW restart re-alloc existing queues */
1848         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1849                 struct iwl_mvm_int_sta tmp_sta = {
1850                         .sta_id = sta_id,
1851                         .type = mvm_sta->sta_type,
1852                 };
1853
1854                 /* First add an empty station since allocating
1855                  * a queue requires a valid station
1856                  */
1857                 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1858                                                  mvmvif->id, mvmvif->color);
1859                 if (ret)
1860                         goto err;
1861
1862                 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1863                 sta_update = true;
1864                 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1865                 goto update_fw;
1866         }
1867
1868         ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1869                                sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1870         if (ret)
1871                 goto err;
1872
1873 update_fw:
1874         ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1875         if (ret)
1876                 goto err;
1877
1878         if (vif->type == NL80211_IFTYPE_STATION) {
1879                 if (!sta->tdls) {
1880                         WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA);
1881                         mvmvif->deflink.ap_sta_id = sta_id;
1882                 } else {
1883                         WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA);
1884                 }
1885         }
1886
1887         rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1888
1889         return 0;
1890
1891 err:
1892         return ret;
1893 }
1894
1895 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1896                       bool drain)
1897 {
1898         struct iwl_mvm_add_sta_cmd cmd = {};
1899         int ret;
1900         u32 status;
1901
1902         lockdep_assert_held(&mvm->mutex);
1903
1904         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1905         cmd.sta_id = mvmsta->deflink.sta_id;
1906         cmd.add_modify = STA_MODE_MODIFY;
1907         cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1908         cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1909
1910         status = ADD_STA_SUCCESS;
1911         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1912                                           iwl_mvm_add_sta_cmd_size(mvm),
1913                                           &cmd, &status);
1914         if (ret)
1915                 return ret;
1916
1917         switch (status & IWL_ADD_STA_STATUS_MASK) {
1918         case ADD_STA_SUCCESS:
1919                 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1920                                mvmsta->deflink.sta_id);
1921                 break;
1922         default:
1923                 ret = -EIO;
1924                 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1925                         mvmsta->deflink.sta_id);
1926                 break;
1927         }
1928
1929         return ret;
1930 }
1931
1932 /*
1933  * Remove a station from the FW table. Before sending the command to remove
1934  * the station validate that the station is indeed known to the driver (sanity
1935  * only).
1936  */
1937 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1938 {
1939         struct ieee80211_sta *sta;
1940         struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1941                 .sta_id = sta_id,
1942         };
1943         int ret;
1944
1945         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1946                                         lockdep_is_held(&mvm->mutex));
1947
1948         /* Note: internal stations are marked as error values */
1949         if (!sta) {
1950                 IWL_ERR(mvm, "Invalid station id\n");
1951                 return -EINVAL;
1952         }
1953
1954         ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1955                                    sizeof(rm_sta_cmd), &rm_sta_cmd);
1956         if (ret) {
1957                 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1958                 return ret;
1959         }
1960
1961         return 0;
1962 }
1963
1964 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1965                                        struct ieee80211_vif *vif,
1966                                        struct ieee80211_sta *sta)
1967 {
1968         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1969         int i;
1970
1971         lockdep_assert_held(&mvm->mutex);
1972
1973         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1974                 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1975                         continue;
1976
1977                 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
1978                                     &mvm_sta->tid_data[i].txq_id, i);
1979                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1980         }
1981
1982         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1983                 struct iwl_mvm_txq *mvmtxq =
1984                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1985
1986                 spin_lock_bh(&mvm->add_stream_lock);
1987                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1988                 list_del_init(&mvmtxq->list);
1989                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1990                 spin_unlock_bh(&mvm->add_stream_lock);
1991         }
1992 }
1993
1994 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
1995                                   struct iwl_mvm_sta *mvm_sta)
1996 {
1997         int i;
1998
1999         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2000                 u16 txq_id;
2001                 int ret;
2002
2003                 spin_lock_bh(&mvm_sta->lock);
2004                 txq_id = mvm_sta->tid_data[i].txq_id;
2005                 spin_unlock_bh(&mvm_sta->lock);
2006
2007                 if (txq_id == IWL_MVM_INVALID_QUEUE)
2008                         continue;
2009
2010                 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2011                 if (ret)
2012                         return ret;
2013         }
2014
2015         return 0;
2016 }
2017
2018 /* Execute the common part for both MLD and non-MLD modes.
2019  * Returns if we're done with removing the station, either
2020  * with error or success
2021  */
2022 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2023                      struct ieee80211_sta *sta,
2024                      struct ieee80211_link_sta *link_sta, int *ret)
2025 {
2026         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2027         struct iwl_mvm_vif_link_info *mvm_link =
2028                 mvmvif->link[link_sta->link_id];
2029         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2030         struct iwl_mvm_link_sta *mvm_link_sta;
2031         u8 sta_id;
2032
2033         lockdep_assert_held(&mvm->mutex);
2034
2035         mvm_link_sta =
2036                 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2037                                           lockdep_is_held(&mvm->mutex));
2038         sta_id = mvm_link_sta->sta_id;
2039
2040         /* If there is a TXQ still marked as reserved - free it */
2041         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2042                 u8 reserved_txq = mvm_sta->reserved_queue;
2043                 enum iwl_mvm_queue_status *status;
2044
2045                 /*
2046                  * If no traffic has gone through the reserved TXQ - it
2047                  * is still marked as IWL_MVM_QUEUE_RESERVED, and
2048                  * should be manually marked as free again
2049                  */
2050                 status = &mvm->queue_info[reserved_txq].status;
2051                 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2052                          (*status != IWL_MVM_QUEUE_FREE),
2053                          "sta_id %d reserved txq %d status %d",
2054                          sta_id, reserved_txq, *status)) {
2055                         *ret = -EINVAL;
2056                         return true;
2057                 }
2058
2059                 *status = IWL_MVM_QUEUE_FREE;
2060         }
2061
2062         if (vif->type == NL80211_IFTYPE_STATION) {
2063                 /* if associated - we can't remove the AP STA now */
2064                 if (vif->cfg.assoc)
2065                         return true;
2066
2067                 /* first remove remaining keys */
2068                 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);
2069
2070                 /* unassoc - go ahead - remove the AP STA now */
2071                 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA;
2072         }
2073
2074         /*
2075          * This shouldn't happen - the TDLS channel switch should be canceled
2076          * before the STA is removed.
2077          */
2078         if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2079                 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;
2080                 cancel_delayed_work(&mvm->tdls_cs.dwork);
2081         }
2082
2083         return false;
2084 }
2085
2086 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2087                    struct ieee80211_vif *vif,
2088                    struct ieee80211_sta *sta)
2089 {
2090         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2091         int ret;
2092
2093         lockdep_assert_held(&mvm->mutex);
2094
2095         ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2096         if (ret)
2097                 return ret;
2098
2099         /* flush its queues here since we are freeing mvm_sta */
2100         ret = iwl_mvm_flush_sta(mvm, mvm_sta, false);
2101         if (ret)
2102                 return ret;
2103         if (iwl_mvm_has_new_tx_api(mvm)) {
2104                 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2105         } else {
2106                 u32 q_mask = mvm_sta->tfd_queue_msk;
2107
2108                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2109                                                      q_mask);
2110         }
2111         if (ret)
2112                 return ret;
2113
2114         ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2115
2116         iwl_mvm_disable_sta_queues(mvm, vif, sta);
2117
2118         if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))
2119                 return ret;
2120
2121         ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2122         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2123
2124         return ret;
2125 }
2126
2127 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2128                       struct ieee80211_vif *vif,
2129                       u8 sta_id)
2130 {
2131         int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2132
2133         lockdep_assert_held(&mvm->mutex);
2134
2135         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2136         return ret;
2137 }
2138
2139 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2140                              struct iwl_mvm_int_sta *sta,
2141                              u32 qmask, enum nl80211_iftype iftype,
2142                              u8 type)
2143 {
2144         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2145             sta->sta_id == IWL_MVM_INVALID_STA) {
2146                 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2147                 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
2148                         return -ENOSPC;
2149         }
2150
2151         sta->tfd_queue_msk = qmask;
2152         sta->type = type;
2153
2154         /* put a non-NULL value so iterating over the stations won't stop */
2155         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2156         return 0;
2157 }
2158
2159 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2160 {
2161         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2162         memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2163         sta->sta_id = IWL_MVM_INVALID_STA;
2164 }
2165
2166 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2167                                           u8 sta_id, u8 fifo)
2168 {
2169         unsigned int wdg_timeout =
2170                 mvm->trans->trans_cfg->base_params->wd_timeout;
2171         struct iwl_trans_txq_scd_cfg cfg = {
2172                 .fifo = fifo,
2173                 .sta_id = sta_id,
2174                 .tid = IWL_MAX_TID_COUNT,
2175                 .aggregate = false,
2176                 .frame_limit = IWL_FRAME_LIMIT,
2177         };
2178
2179         WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2180
2181         iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2182 }
2183
2184 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2185 {
2186         unsigned int wdg_timeout =
2187                 mvm->trans->trans_cfg->base_params->wd_timeout;
2188
2189         WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2190
2191         return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2192                                        wdg_timeout);
2193 }
2194
2195 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2196                                           int maccolor, u8 *addr,
2197                                           struct iwl_mvm_int_sta *sta,
2198                                           u16 *queue, int fifo)
2199 {
2200         int ret;
2201
2202         /* Map queue to fifo - needs to happen before adding station */
2203         if (!iwl_mvm_has_new_tx_api(mvm))
2204                 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2205
2206         ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2207         if (ret) {
2208                 if (!iwl_mvm_has_new_tx_api(mvm))
2209                         iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2210                                             IWL_MAX_TID_COUNT);
2211                 return ret;
2212         }
2213
2214         /*
2215          * For 22000 firmware and on we cannot add queue to a station unknown
2216          * to firmware so enable queue here - after the station was added
2217          */
2218         if (iwl_mvm_has_new_tx_api(mvm)) {
2219                 int txq;
2220
2221                 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2222                 if (txq < 0) {
2223                         iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2224                         return txq;
2225                 }
2226
2227                 *queue = txq;
2228         }
2229
2230         return 0;
2231 }
2232
2233 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2234 {
2235         int ret;
2236         u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2237                 BIT(mvm->aux_queue);
2238
2239         lockdep_assert_held(&mvm->mutex);
2240
2241         /* Allocate aux station and assign to it the aux queue */
2242         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2243                                        NL80211_IFTYPE_UNSPECIFIED,
2244                                        IWL_STA_AUX_ACTIVITY);
2245         if (ret)
2246                 return ret;
2247
2248         /*
2249          * In CDB NICs we need to specify which lmac to use for aux activity
2250          * using the mac_id argument place to send lmac_id to the function
2251          */
2252         ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2253                                              &mvm->aux_sta, &mvm->aux_queue,
2254                                              IWL_MVM_TX_FIFO_MCAST);
2255         if (ret) {
2256                 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2257                 return ret;
2258         }
2259
2260         return 0;
2261 }
2262
2263 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2264 {
2265         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2266
2267         lockdep_assert_held(&mvm->mutex);
2268
2269         return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2270                                               NULL, &mvm->snif_sta,
2271                                               &mvm->snif_queue,
2272                                               IWL_MVM_TX_FIFO_BE);
2273 }
2274
2275 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2276 {
2277         int ret;
2278
2279         lockdep_assert_held(&mvm->mutex);
2280
2281         if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA))
2282                 return -EINVAL;
2283
2284         iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2285                             &mvm->snif_queue, IWL_MAX_TID_COUNT);
2286         ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2287         if (ret)
2288                 IWL_WARN(mvm, "Failed sending remove station\n");
2289
2290         return ret;
2291 }
2292
2293 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2294 {
2295         int ret;
2296
2297         lockdep_assert_held(&mvm->mutex);
2298
2299         if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA))
2300                 return -EINVAL;
2301
2302         iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2303                             &mvm->aux_queue, IWL_MAX_TID_COUNT);
2304         ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2305         if (ret)
2306                 IWL_WARN(mvm, "Failed sending remove station\n");
2307         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2308
2309         return ret;
2310 }
2311
2312 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2313 {
2314         iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2315 }
2316
2317 /*
2318  * Send the add station command for the vif's broadcast station.
2319  * Assumes that the station was already allocated.
2320  *
2321  * @mvm: the mvm component
2322  * @vif: the interface to which the broadcast station is added
2323  * @bsta: the broadcast station to add.
2324  */
2325 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2326 {
2327         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2328         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2329         static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2330         const u8 *baddr = _baddr;
2331         int queue;
2332         int ret;
2333         unsigned int wdg_timeout =
2334                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2335         struct iwl_trans_txq_scd_cfg cfg = {
2336                 .fifo = IWL_MVM_TX_FIFO_VO,
2337                 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2338                 .tid = IWL_MAX_TID_COUNT,
2339                 .aggregate = false,
2340                 .frame_limit = IWL_FRAME_LIMIT,
2341         };
2342
2343         lockdep_assert_held(&mvm->mutex);
2344
2345         if (!iwl_mvm_has_new_tx_api(mvm)) {
2346                 if (vif->type == NL80211_IFTYPE_AP ||
2347                     vif->type == NL80211_IFTYPE_ADHOC) {
2348                         queue = mvm->probe_queue;
2349                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2350                         queue = mvm->p2p_dev_queue;
2351                 } else {
2352                         WARN(1, "Missing required TXQ for adding bcast STA\n");
2353                         return -EINVAL;
2354                 }
2355
2356                 bsta->tfd_queue_msk |= BIT(queue);
2357
2358                 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2359         }
2360
2361         if (vif->type == NL80211_IFTYPE_ADHOC)
2362                 baddr = vif->bss_conf.bssid;
2363
2364         if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))
2365                 return -ENOSPC;
2366
2367         ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2368                                          mvmvif->id, mvmvif->color);
2369         if (ret)
2370                 return ret;
2371
2372         /*
2373          * For 22000 firmware and on we cannot add queue to a station unknown
2374          * to firmware so enable queue here - after the station was added
2375          */
2376         if (iwl_mvm_has_new_tx_api(mvm)) {
2377                 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2378                                                 IWL_MAX_TID_COUNT,
2379                                                 wdg_timeout);
2380                 if (queue < 0) {
2381                         iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2382                         return queue;
2383                 }
2384
2385                 if (vif->type == NL80211_IFTYPE_AP ||
2386                     vif->type == NL80211_IFTYPE_ADHOC) {
2387                         /* for queue management */
2388                         mvm->probe_queue = queue;
2389                         /* for use in TX */
2390                         mvmvif->deflink.mgmt_queue = queue;
2391                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2392                         mvm->p2p_dev_queue = queue;
2393                 }
2394         } else if (vif->type == NL80211_IFTYPE_AP ||
2395                    vif->type == NL80211_IFTYPE_ADHOC) {
2396                 /* set it for use in TX */
2397                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2398         }
2399
2400         return 0;
2401 }
2402
2403 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2404                                    struct ieee80211_vif *vif)
2405 {
2406         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2407         u16 *queueptr, queue;
2408
2409         lockdep_assert_held(&mvm->mutex);
2410
2411         iwl_mvm_flush_sta(mvm, &mvmvif->deflink.bcast_sta, true);
2412
2413         switch (vif->type) {
2414         case NL80211_IFTYPE_AP:
2415         case NL80211_IFTYPE_ADHOC:
2416                 queueptr = &mvm->probe_queue;
2417                 break;
2418         case NL80211_IFTYPE_P2P_DEVICE:
2419                 queueptr = &mvm->p2p_dev_queue;
2420                 break;
2421         default:
2422                 WARN(1, "Can't free bcast queue on vif type %d\n",
2423                      vif->type);
2424                 return;
2425         }
2426
2427         queue = *queueptr;
2428         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2429                             queueptr, IWL_MAX_TID_COUNT);
2430
2431         if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2432                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2433
2434         if (iwl_mvm_has_new_tx_api(mvm))
2435                 return;
2436
2437         WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2438         mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2439 }
2440
2441 /* Send the FW a request to remove the station from it's internal data
2442  * structures, but DO NOT remove the entry from the local data structures. */
2443 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2444 {
2445         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2446         int ret;
2447
2448         lockdep_assert_held(&mvm->mutex);
2449
2450         iwl_mvm_free_bcast_sta_queues(mvm, vif);
2451
2452         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2453         if (ret)
2454                 IWL_WARN(mvm, "Failed sending remove station\n");
2455         return ret;
2456 }
2457
2458 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2459 {
2460         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2461
2462         lockdep_assert_held(&mvm->mutex);
2463
2464         return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2465                                         ieee80211_vif_type_p2p(vif),
2466                                         IWL_STA_GENERAL_PURPOSE);
2467 }
2468
2469 /* Allocate a new station entry for the broadcast station to the given vif,
2470  * and send it to the FW.
2471  * Note that each P2P mac should have its own broadcast station.
2472  *
2473  * @mvm: the mvm component
2474  * @vif: the interface to which the broadcast station is added
2475  * @bsta: the broadcast station to add. */
2476 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2477 {
2478         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2479         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2480         int ret;
2481
2482         lockdep_assert_held(&mvm->mutex);
2483
2484         ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2485         if (ret)
2486                 return ret;
2487
2488         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2489
2490         if (ret)
2491                 iwl_mvm_dealloc_int_sta(mvm, bsta);
2492
2493         return ret;
2494 }
2495
2496 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2497 {
2498         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2499
2500         iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2501 }
2502
2503 /*
2504  * Send the FW a request to remove the station from it's internal data
2505  * structures, and in addition remove it from the local data structure.
2506  */
2507 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2508 {
2509         int ret;
2510
2511         lockdep_assert_held(&mvm->mutex);
2512
2513         ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2514
2515         iwl_mvm_dealloc_bcast_sta(mvm, vif);
2516
2517         return ret;
2518 }
2519
2520 /*
2521  * Allocate a new station entry for the multicast station to the given vif,
2522  * and send it to the FW.
2523  * Note that each AP/GO mac should have its own multicast station.
2524  *
2525  * @mvm: the mvm component
2526  * @vif: the interface to which the multicast station is added
2527  */
2528 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2529 {
2530         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2531         struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2532         static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2533         const u8 *maddr = _maddr;
2534         struct iwl_trans_txq_scd_cfg cfg = {
2535                 .fifo = vif->type == NL80211_IFTYPE_AP ?
2536                         IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2537                 .sta_id = msta->sta_id,
2538                 .tid = 0,
2539                 .aggregate = false,
2540                 .frame_limit = IWL_FRAME_LIMIT,
2541         };
2542         unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2543         int ret;
2544
2545         lockdep_assert_held(&mvm->mutex);
2546
2547         if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2548                     vif->type != NL80211_IFTYPE_ADHOC))
2549                 return -ENOTSUPP;
2550
2551         /*
2552          * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2553          * invalid, so make sure we use the queue we want.
2554          * Note that this is done here as we want to avoid making DQA
2555          * changes in mac80211 layer.
2556          */
2557         if (vif->type == NL80211_IFTYPE_ADHOC)
2558                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2559
2560         /*
2561          * While in previous FWs we had to exclude cab queue from TFD queue
2562          * mask, now it is needed as any other queue.
2563          */
2564         if (!iwl_mvm_has_new_tx_api(mvm) &&
2565             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2566                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2567                                    &cfg,
2568                                    timeout);
2569                 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2570         }
2571         ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2572                                          mvmvif->id, mvmvif->color);
2573         if (ret)
2574                 goto err;
2575
2576         /*
2577          * Enable cab queue after the ADD_STA command is sent.
2578          * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2579          * command with unknown station id, and for FW that doesn't support
2580          * station API since the cab queue is not included in the
2581          * tfd_queue_mask.
2582          */
2583         if (iwl_mvm_has_new_tx_api(mvm)) {
2584                 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2585                                                     0, timeout);
2586                 if (queue < 0) {
2587                         ret = queue;
2588                         goto err;
2589                 }
2590                 mvmvif->deflink.cab_queue = queue;
2591         } else if (!fw_has_api(&mvm->fw->ucode_capa,
2592                                IWL_UCODE_TLV_API_STA_TYPE))
2593                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2594                                    &cfg,
2595                                    timeout);
2596
2597         return 0;
2598 err:
2599         iwl_mvm_dealloc_int_sta(mvm, msta);
2600         return ret;
2601 }
2602
2603 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2604                                     struct ieee80211_key_conf *keyconf,
2605                                     bool mcast)
2606 {
2607         union {
2608                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2609                 struct iwl_mvm_add_sta_key_cmd cmd;
2610         } u = {};
2611         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2612                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2613         __le16 key_flags;
2614         int ret, size;
2615         u32 status;
2616
2617         /* This is a valid situation for GTK removal */
2618         if (sta_id == IWL_MVM_INVALID_STA)
2619                 return 0;
2620
2621         key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2622                                  STA_KEY_FLG_KEYID_MSK);
2623         key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2624         key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2625
2626         if (mcast)
2627                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2628
2629         /*
2630          * The fields assigned here are in the same location at the start
2631          * of the command, so we can do this union trick.
2632          */
2633         u.cmd.common.key_flags = key_flags;
2634         u.cmd.common.key_offset = keyconf->hw_key_idx;
2635         u.cmd.common.sta_id = sta_id;
2636
2637         size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2638
2639         status = ADD_STA_SUCCESS;
2640         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2641                                           &status);
2642
2643         switch (status) {
2644         case ADD_STA_SUCCESS:
2645                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2646                 break;
2647         default:
2648                 ret = -EIO;
2649                 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2650                 break;
2651         }
2652
2653         return ret;
2654 }
2655
2656 /*
2657  * Send the FW a request to remove the station from it's internal data
2658  * structures, and in addition remove it from the local data structure.
2659  */
2660 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2661 {
2662         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2663         int ret;
2664
2665         lockdep_assert_held(&mvm->mutex);
2666
2667         iwl_mvm_flush_sta(mvm, &mvmvif->deflink.mcast_sta, true);
2668
2669         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2670                             &mvmvif->deflink.cab_queue, 0);
2671
2672         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2673         if (ret)
2674                 IWL_WARN(mvm, "Failed sending remove station\n");
2675
2676         return ret;
2677 }
2678
2679 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2680 {
2681         struct iwl_mvm_delba_data notif = {
2682                 .baid = baid,
2683         };
2684
2685         iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2686                                         &notif, sizeof(notif));
2687 };
2688
2689 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2690                                  struct iwl_mvm_baid_data *data)
2691 {
2692         int i;
2693
2694         iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2695
2696         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2697                 int j;
2698                 struct iwl_mvm_reorder_buffer *reorder_buf =
2699                         &data->reorder_buf[i];
2700                 struct iwl_mvm_reorder_buf_entry *entries =
2701                         &data->entries[i * data->entries_per_queue];
2702
2703                 spin_lock_bh(&reorder_buf->lock);
2704                 if (likely(!reorder_buf->num_stored)) {
2705                         spin_unlock_bh(&reorder_buf->lock);
2706                         continue;
2707                 }
2708
2709                 /*
2710                  * This shouldn't happen in regular DELBA since the internal
2711                  * delBA notification should trigger a release of all frames in
2712                  * the reorder buffer.
2713                  */
2714                 WARN_ON(1);
2715
2716                 for (j = 0; j < reorder_buf->buf_size; j++)
2717                         __skb_queue_purge(&entries[j].e.frames);
2718                 /*
2719                  * Prevent timer re-arm. This prevents a very far fetched case
2720                  * where we timed out on the notification. There may be prior
2721                  * RX frames pending in the RX queue before the notification
2722                  * that might get processed between now and the actual deletion
2723                  * and we would re-arm the timer although we are deleting the
2724                  * reorder buffer.
2725                  */
2726                 reorder_buf->removed = true;
2727                 spin_unlock_bh(&reorder_buf->lock);
2728                 del_timer_sync(&reorder_buf->reorder_timer);
2729         }
2730 }
2731
2732 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2733                                         struct iwl_mvm_baid_data *data,
2734                                         u16 ssn, u16 buf_size)
2735 {
2736         int i;
2737
2738         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2739                 struct iwl_mvm_reorder_buffer *reorder_buf =
2740                         &data->reorder_buf[i];
2741                 struct iwl_mvm_reorder_buf_entry *entries =
2742                         &data->entries[i * data->entries_per_queue];
2743                 int j;
2744
2745                 reorder_buf->num_stored = 0;
2746                 reorder_buf->head_sn = ssn;
2747                 reorder_buf->buf_size = buf_size;
2748                 /* rx reorder timer */
2749                 timer_setup(&reorder_buf->reorder_timer,
2750                             iwl_mvm_reorder_timer_expired, 0);
2751                 spin_lock_init(&reorder_buf->lock);
2752                 reorder_buf->mvm = mvm;
2753                 reorder_buf->queue = i;
2754                 reorder_buf->valid = false;
2755                 for (j = 0; j < reorder_buf->buf_size; j++)
2756                         __skb_queue_head_init(&entries[j].e.frames);
2757         }
2758 }
2759
2760 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2761                                   struct ieee80211_sta *sta,
2762                                   bool start, int tid, u16 ssn,
2763                                   u16 buf_size)
2764 {
2765         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2766         struct iwl_mvm_add_sta_cmd cmd = {
2767                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2768                 .sta_id = mvm_sta->deflink.sta_id,
2769                 .add_modify = STA_MODE_MODIFY,
2770         };
2771         u32 status;
2772         int ret;
2773
2774         if (start) {
2775                 cmd.add_immediate_ba_tid = tid;
2776                 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2777                 cmd.rx_ba_window = cpu_to_le16(buf_size);
2778                 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2779         } else {
2780                 cmd.remove_immediate_ba_tid = tid;
2781                 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2782         }
2783
2784         status = ADD_STA_SUCCESS;
2785         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2786                                           iwl_mvm_add_sta_cmd_size(mvm),
2787                                           &cmd, &status);
2788         if (ret)
2789                 return ret;
2790
2791         switch (status & IWL_ADD_STA_STATUS_MASK) {
2792         case ADD_STA_SUCCESS:
2793                 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2794                              start ? "start" : "stopp");
2795                 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2796                             !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2797                         return -EINVAL;
2798                 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2799         case ADD_STA_IMMEDIATE_BA_FAILURE:
2800                 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2801                 return -ENOSPC;
2802         default:
2803                 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2804                         start ? "start" : "stopp", status);
2805                 return -EIO;
2806         }
2807 }
2808
2809 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2810                                   struct ieee80211_sta *sta,
2811                                   bool start, int tid, u16 ssn,
2812                                   u16 buf_size, int baid)
2813 {
2814         struct iwl_rx_baid_cfg_cmd cmd = {
2815                 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2816                                   cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2817         };
2818         u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD);
2819         int ret;
2820
2821         BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2822
2823         if (start) {
2824                 cmd.alloc.sta_id_mask =
2825                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2826                 cmd.alloc.tid = tid;
2827                 cmd.alloc.ssn = cpu_to_le16(ssn);
2828                 cmd.alloc.win_size = cpu_to_le16(buf_size);
2829                 baid = -EIO;
2830         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) {
2831                 cmd.remove_v1.baid = cpu_to_le32(baid);
2832                 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2833         } else {
2834                 cmd.remove.sta_id_mask =
2835                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2836                 cmd.remove.tid = cpu_to_le32(tid);
2837         }
2838
2839         ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd),
2840                                           &cmd, &baid);
2841         if (ret)
2842                 return ret;
2843
2844         if (!start) {
2845                 /* ignore firmware baid on remove */
2846                 baid = 0;
2847         }
2848
2849         IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2850                      start ? "start" : "stopp");
2851
2852         if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2853                 return -EINVAL;
2854
2855         return baid;
2856 }
2857
2858 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2859                               bool start, int tid, u16 ssn, u16 buf_size,
2860                               int baid)
2861 {
2862         if (fw_has_capa(&mvm->fw->ucode_capa,
2863                         IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2864                 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2865                                               tid, ssn, buf_size, baid);
2866
2867         return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2868                                       tid, ssn, buf_size);
2869 }
2870
2871 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2872                        int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2873 {
2874         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2875         struct iwl_mvm_baid_data *baid_data = NULL;
2876         int ret, baid;
2877         u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2878                                                                IWL_MAX_BAID_OLD;
2879
2880         lockdep_assert_held(&mvm->mutex);
2881
2882         if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2883                 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2884                 return -ENOSPC;
2885         }
2886
2887         if (iwl_mvm_has_new_rx_api(mvm) && start) {
2888                 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2889
2890                 /* sparse doesn't like the __align() so don't check */
2891 #ifndef __CHECKER__
2892                 /*
2893                  * The division below will be OK if either the cache line size
2894                  * can be divided by the entry size (ALIGN will round up) or if
2895                  * if the entry size can be divided by the cache line size, in
2896                  * which case the ALIGN() will do nothing.
2897                  */
2898                 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2899                              sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2900 #endif
2901
2902                 /*
2903                  * Upward align the reorder buffer size to fill an entire cache
2904                  * line for each queue, to avoid sharing cache lines between
2905                  * different queues.
2906                  */
2907                 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2908
2909                 /*
2910                  * Allocate here so if allocation fails we can bail out early
2911                  * before starting the BA session in the firmware
2912                  */
2913                 baid_data = kzalloc(sizeof(*baid_data) +
2914                                     mvm->trans->num_rx_queues *
2915                                     reorder_buf_size,
2916                                     GFP_KERNEL);
2917                 if (!baid_data)
2918                         return -ENOMEM;
2919
2920                 /*
2921                  * This division is why we need the above BUILD_BUG_ON(),
2922                  * if that doesn't hold then this will not be right.
2923                  */
2924                 baid_data->entries_per_queue =
2925                         reorder_buf_size / sizeof(baid_data->entries[0]);
2926         }
2927
2928         if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2929                 baid = mvm_sta->tid_to_baid[tid];
2930         } else {
2931                 /* we don't really need it in this case */
2932                 baid = -1;
2933         }
2934
2935         /* Don't send command to remove (start=0) BAID during restart */
2936         if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2937                 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2938                                           baid);
2939
2940         if (baid < 0) {
2941                 ret = baid;
2942                 goto out_free;
2943         }
2944
2945         if (start) {
2946                 mvm->rx_ba_sessions++;
2947
2948                 if (!iwl_mvm_has_new_rx_api(mvm))
2949                         return 0;
2950
2951                 baid_data->baid = baid;
2952                 baid_data->timeout = timeout;
2953                 baid_data->last_rx = jiffies;
2954                 baid_data->rcu_ptr = &mvm->baid_map[baid];
2955                 timer_setup(&baid_data->session_timer,
2956                             iwl_mvm_rx_agg_session_expired, 0);
2957                 baid_data->mvm = mvm;
2958                 baid_data->tid = tid;
2959                 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2960
2961                 mvm_sta->tid_to_baid[tid] = baid;
2962                 if (timeout)
2963                         mod_timer(&baid_data->session_timer,
2964                                   TU_TO_EXP_TIME(timeout * 2));
2965
2966                 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size);
2967                 /*
2968                  * protect the BA data with RCU to cover a case where our
2969                  * internal RX sync mechanism will timeout (not that it's
2970                  * supposed to happen) and we will free the session data while
2971                  * RX is being processed in parallel
2972                  */
2973                 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2974                              mvm_sta->deflink.sta_id, tid, baid);
2975                 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2976                 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2977         } else  {
2978                 baid = mvm_sta->tid_to_baid[tid];
2979
2980                 if (mvm->rx_ba_sessions > 0)
2981                         /* check that restart flow didn't zero the counter */
2982                         mvm->rx_ba_sessions--;
2983                 if (!iwl_mvm_has_new_rx_api(mvm))
2984                         return 0;
2985
2986                 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2987                         return -EINVAL;
2988
2989                 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2990                 if (WARN_ON(!baid_data))
2991                         return -EINVAL;
2992
2993                 /* synchronize all rx queues so we can safely delete */
2994                 iwl_mvm_free_reorder(mvm, baid_data);
2995                 timer_shutdown_sync(&baid_data->session_timer);
2996                 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2997                 kfree_rcu(baid_data, rcu_head);
2998                 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
2999
3000                 /*
3001                  * After we've deleted it, do another queue sync
3002                  * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently
3003                  * running it won't find a new session in the old
3004                  * BAID. It can find the NULL pointer for the BAID,
3005                  * but we must not have it find a different session.
3006                  */
3007                 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY,
3008                                                 true, NULL, 0);
3009         }
3010         return 0;
3011
3012 out_free:
3013         kfree(baid_data);
3014         return ret;
3015 }
3016
3017 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3018                        int tid, u8 queue, bool start)
3019 {
3020         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3021         struct iwl_mvm_add_sta_cmd cmd = {};
3022         int ret;
3023         u32 status;
3024
3025         lockdep_assert_held(&mvm->mutex);
3026
3027         if (start) {
3028                 mvm_sta->tfd_queue_msk |= BIT(queue);
3029                 mvm_sta->tid_disable_agg &= ~BIT(tid);
3030         } else {
3031                 /* In DQA-mode the queue isn't removed on agg termination */
3032                 mvm_sta->tid_disable_agg |= BIT(tid);
3033         }
3034
3035         cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3036         cmd.sta_id = mvm_sta->deflink.sta_id;
3037         cmd.add_modify = STA_MODE_MODIFY;
3038         if (!iwl_mvm_has_new_tx_api(mvm))
3039                 cmd.modify_mask = STA_MODIFY_QUEUES;
3040         cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3041         cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3042         cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3043
3044         status = ADD_STA_SUCCESS;
3045         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3046                                           iwl_mvm_add_sta_cmd_size(mvm),
3047                                           &cmd, &status);
3048         if (ret)
3049                 return ret;
3050
3051         switch (status & IWL_ADD_STA_STATUS_MASK) {
3052         case ADD_STA_SUCCESS:
3053                 break;
3054         default:
3055                 ret = -EIO;
3056                 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3057                         start ? "start" : "stopp", status);
3058                 break;
3059         }
3060
3061         return ret;
3062 }
3063
3064 const u8 tid_to_mac80211_ac[] = {
3065         IEEE80211_AC_BE,
3066         IEEE80211_AC_BK,
3067         IEEE80211_AC_BK,
3068         IEEE80211_AC_BE,
3069         IEEE80211_AC_VI,
3070         IEEE80211_AC_VI,
3071         IEEE80211_AC_VO,
3072         IEEE80211_AC_VO,
3073         IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3074 };
3075
3076 static const u8 tid_to_ucode_ac[] = {
3077         AC_BE,
3078         AC_BK,
3079         AC_BK,
3080         AC_BE,
3081         AC_VI,
3082         AC_VI,
3083         AC_VO,
3084         AC_VO,
3085 };
3086
3087 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3088                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3089 {
3090         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3091         struct iwl_mvm_tid_data *tid_data;
3092         u16 normalized_ssn;
3093         u16 txq_id;
3094         int ret;
3095
3096         if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3097                 return -EINVAL;
3098
3099         if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3100             mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3101                 IWL_ERR(mvm,
3102                         "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3103                         mvmsta->tid_data[tid].state);
3104                 return -ENXIO;
3105         }
3106
3107         lockdep_assert_held(&mvm->mutex);
3108
3109         if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3110             iwl_mvm_has_new_tx_api(mvm)) {
3111                 u8 ac = tid_to_mac80211_ac[tid];
3112
3113                 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3114                 if (ret)
3115                         return ret;
3116         }
3117
3118         spin_lock_bh(&mvmsta->lock);
3119
3120         /*
3121          * Note the possible cases:
3122          *  1. An enabled TXQ - TXQ needs to become agg'ed
3123          *  2. The TXQ hasn't yet been enabled, so find a free one and mark
3124          *      it as reserved
3125          */
3126         txq_id = mvmsta->tid_data[tid].txq_id;
3127         if (txq_id == IWL_MVM_INVALID_QUEUE) {
3128                 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3129                                               IWL_MVM_DQA_MIN_DATA_QUEUE,
3130                                               IWL_MVM_DQA_MAX_DATA_QUEUE);
3131                 if (ret < 0) {
3132                         IWL_ERR(mvm, "Failed to allocate agg queue\n");
3133                         goto out;
3134                 }
3135
3136                 txq_id = ret;
3137
3138                 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3139                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3140         } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3141                 ret = -ENXIO;
3142                 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3143                         tid, IWL_MAX_HW_QUEUES - 1);
3144                 goto out;
3145
3146         } else if (unlikely(mvm->queue_info[txq_id].status ==
3147                             IWL_MVM_QUEUE_SHARED)) {
3148                 ret = -ENXIO;
3149                 IWL_DEBUG_TX_QUEUES(mvm,
3150                                     "Can't start tid %d agg on shared queue!\n",
3151                                     tid);
3152                 goto out;
3153         }
3154
3155         IWL_DEBUG_TX_QUEUES(mvm,
3156                             "AGG for tid %d will be on queue #%d\n",
3157                             tid, txq_id);
3158
3159         tid_data = &mvmsta->tid_data[tid];
3160         tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3161         tid_data->txq_id = txq_id;
3162         *ssn = tid_data->ssn;
3163
3164         IWL_DEBUG_TX_QUEUES(mvm,
3165                             "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3166                             mvmsta->deflink.sta_id, tid, txq_id,
3167                             tid_data->ssn,
3168                             tid_data->next_reclaimed);
3169
3170         /*
3171          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3172          * to align the wrap around of ssn so we compare relevant values.
3173          */
3174         normalized_ssn = tid_data->ssn;
3175         if (mvm->trans->trans_cfg->gen2)
3176                 normalized_ssn &= 0xff;
3177
3178         if (normalized_ssn == tid_data->next_reclaimed) {
3179                 tid_data->state = IWL_AGG_STARTING;
3180                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3181         } else {
3182                 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3183                 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3184         }
3185
3186 out:
3187         spin_unlock_bh(&mvmsta->lock);
3188
3189         return ret;
3190 }
3191
3192 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3193                             struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3194                             bool amsdu)
3195 {
3196         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3197         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3198         unsigned int wdg_timeout =
3199                 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
3200         int queue, ret;
3201         bool alloc_queue = true;
3202         enum iwl_mvm_queue_status queue_status;
3203         u16 ssn;
3204
3205         struct iwl_trans_txq_scd_cfg cfg = {
3206                 .sta_id = mvmsta->deflink.sta_id,
3207                 .tid = tid,
3208                 .frame_limit = buf_size,
3209                 .aggregate = true,
3210         };
3211
3212         /*
3213          * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3214          * manager, so this function should never be called in this case.
3215          */
3216         if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3217                 return -EINVAL;
3218
3219         BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3220                      != IWL_MAX_TID_COUNT);
3221
3222         spin_lock_bh(&mvmsta->lock);
3223         ssn = tid_data->ssn;
3224         queue = tid_data->txq_id;
3225         tid_data->state = IWL_AGG_ON;
3226         mvmsta->agg_tids |= BIT(tid);
3227         tid_data->ssn = 0xffff;
3228         tid_data->amsdu_in_ampdu_allowed = amsdu;
3229         spin_unlock_bh(&mvmsta->lock);
3230
3231         if (iwl_mvm_has_new_tx_api(mvm)) {
3232                 /*
3233                  * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3234                  * would have failed, so if we are here there is no need to
3235                  * allocate a queue.
3236                  * However, if aggregation size is different than the default
3237                  * size, the scheduler should be reconfigured.
3238                  * We cannot do this with the new TX API, so return unsupported
3239                  * for now, until it will be offloaded to firmware..
3240                  * Note that if SCD default value changes - this condition
3241                  * should be updated as well.
3242                  */
3243                 if (buf_size < IWL_FRAME_LIMIT)
3244                         return -ENOTSUPP;
3245
3246                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3247                 if (ret)
3248                         return -EIO;
3249                 goto out;
3250         }
3251
3252         cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3253
3254         queue_status = mvm->queue_info[queue].status;
3255
3256         /* Maybe there is no need to even alloc a queue... */
3257         if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3258                 alloc_queue = false;
3259
3260         /*
3261          * Only reconfig the SCD for the queue if the window size has
3262          * changed from current (become smaller)
3263          */
3264         if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3265                 /*
3266                  * If reconfiguring an existing queue, it first must be
3267                  * drained
3268                  */
3269                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3270                                                      BIT(queue));
3271                 if (ret) {
3272                         IWL_ERR(mvm,
3273                                 "Error draining queue before reconfig\n");
3274                         return ret;
3275                 }
3276
3277                 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3278                                            mvmsta->deflink.sta_id, tid,
3279                                            buf_size, ssn);
3280                 if (ret) {
3281                         IWL_ERR(mvm,
3282                                 "Error reconfiguring TXQ #%d\n", queue);
3283                         return ret;
3284                 }
3285         }
3286
3287         if (alloc_queue)
3288                 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3289                                    &cfg, wdg_timeout);
3290
3291         /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3292         if (queue_status != IWL_MVM_QUEUE_SHARED) {
3293                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3294                 if (ret)
3295                         return -EIO;
3296         }
3297
3298         /* No need to mark as reserved */
3299         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3300
3301 out:
3302         /*
3303          * Even though in theory the peer could have different
3304          * aggregation reorder buffer sizes for different sessions,
3305          * our ucode doesn't allow for that and has a global limit
3306          * for each station. Therefore, use the minimum of all the
3307          * aggregation sessions and our default value.
3308          */
3309         mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3310                 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3311                     buf_size);
3312         mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3313                 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3314
3315         IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3316                      sta->addr, tid);
3317
3318         return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3319 }
3320
3321 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3322                                         struct iwl_mvm_sta *mvmsta,
3323                                         struct iwl_mvm_tid_data *tid_data)
3324 {
3325         u16 txq_id = tid_data->txq_id;
3326
3327         lockdep_assert_held(&mvm->mutex);
3328
3329         if (iwl_mvm_has_new_tx_api(mvm))
3330                 return;
3331
3332         /*
3333          * The TXQ is marked as reserved only if no traffic came through yet
3334          * This means no traffic has been sent on this TID (agg'd or not), so
3335          * we no longer have use for the queue. Since it hasn't even been
3336          * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3337          * free.
3338          */
3339         if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3340                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3341                 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3342         }
3343 }
3344
3345 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3346                             struct ieee80211_sta *sta, u16 tid)
3347 {
3348         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3349         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3350         u16 txq_id;
3351         int err;
3352
3353         /*
3354          * If mac80211 is cleaning its state, then say that we finished since
3355          * our state has been cleared anyway.
3356          */
3357         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3358                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3359                 return 0;
3360         }
3361
3362         spin_lock_bh(&mvmsta->lock);
3363
3364         txq_id = tid_data->txq_id;
3365
3366         IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3367                             mvmsta->deflink.sta_id, tid, txq_id,
3368                             tid_data->state);
3369
3370         mvmsta->agg_tids &= ~BIT(tid);
3371
3372         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3373
3374         switch (tid_data->state) {
3375         case IWL_AGG_ON:
3376                 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3377
3378                 IWL_DEBUG_TX_QUEUES(mvm,
3379                                     "ssn = %d, next_recl = %d\n",
3380                                     tid_data->ssn, tid_data->next_reclaimed);
3381
3382                 tid_data->ssn = 0xffff;
3383                 tid_data->state = IWL_AGG_OFF;
3384                 spin_unlock_bh(&mvmsta->lock);
3385
3386                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3387
3388                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3389                 return 0;
3390         case IWL_AGG_STARTING:
3391         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3392                 /*
3393                  * The agg session has been stopped before it was set up. This
3394                  * can happen when the AddBA timer times out for example.
3395                  */
3396
3397                 /* No barriers since we are under mutex */
3398                 lockdep_assert_held(&mvm->mutex);
3399
3400                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3401                 tid_data->state = IWL_AGG_OFF;
3402                 err = 0;
3403                 break;
3404         default:
3405                 IWL_ERR(mvm,
3406                         "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3407                         mvmsta->deflink.sta_id, tid, tid_data->state);
3408                 IWL_ERR(mvm,
3409                         "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3410                 err = -EINVAL;
3411         }
3412
3413         spin_unlock_bh(&mvmsta->lock);
3414
3415         return err;
3416 }
3417
3418 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3419                             struct ieee80211_sta *sta, u16 tid)
3420 {
3421         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3422         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3423         u16 txq_id;
3424         enum iwl_mvm_agg_state old_state;
3425
3426         /*
3427          * First set the agg state to OFF to avoid calling
3428          * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3429          */
3430         spin_lock_bh(&mvmsta->lock);
3431         txq_id = tid_data->txq_id;
3432         IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3433                             mvmsta->deflink.sta_id, tid, txq_id,
3434                             tid_data->state);
3435         old_state = tid_data->state;
3436         tid_data->state = IWL_AGG_OFF;
3437         mvmsta->agg_tids &= ~BIT(tid);
3438         spin_unlock_bh(&mvmsta->lock);
3439
3440         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3441
3442         if (old_state >= IWL_AGG_ON) {
3443                 iwl_mvm_drain_sta(mvm, mvmsta, true);
3444
3445                 if (iwl_mvm_has_new_tx_api(mvm)) {
3446                         if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3447                                                    BIT(tid)))
3448                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3449                         iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3450                 } else {
3451                         if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3452                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3453                         iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3454                 }
3455
3456                 iwl_mvm_drain_sta(mvm, mvmsta, false);
3457
3458                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3459         }
3460
3461         return 0;
3462 }
3463
3464 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3465 {
3466         int i, max = -1, max_offs = -1;
3467
3468         lockdep_assert_held(&mvm->mutex);
3469
3470         /* Pick the unused key offset with the highest 'deleted'
3471          * counter. Every time a key is deleted, all the counters
3472          * are incremented and the one that was just deleted is
3473          * reset to zero. Thus, the highest counter is the one
3474          * that was deleted longest ago. Pick that one.
3475          */
3476         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3477                 if (test_bit(i, mvm->fw_key_table))
3478                         continue;
3479                 if (mvm->fw_key_deleted[i] > max) {
3480                         max = mvm->fw_key_deleted[i];
3481                         max_offs = i;
3482                 }
3483         }
3484
3485         if (max_offs < 0)
3486                 return STA_KEY_IDX_INVALID;
3487
3488         return max_offs;
3489 }
3490
3491 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3492                                                struct ieee80211_vif *vif,
3493                                                struct ieee80211_sta *sta)
3494 {
3495         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3496
3497         if (sta)
3498                 return iwl_mvm_sta_from_mac80211(sta);
3499
3500         /*
3501          * The device expects GTKs for station interfaces to be
3502          * installed as GTKs for the AP station. If we have no
3503          * station ID, then use AP's station ID.
3504          */
3505         if (vif->type == NL80211_IFTYPE_STATION &&
3506             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3507                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3508
3509                 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3510                                             lockdep_is_held(&mvm->mutex));
3511
3512                 /*
3513                  * It is possible that the 'sta' parameter is NULL,
3514                  * for example when a GTK is removed - the sta_id will then
3515                  * be the AP ID, and no station was passed by mac80211.
3516                  */
3517                 if (IS_ERR_OR_NULL(sta))
3518                         return NULL;
3519
3520                 return iwl_mvm_sta_from_mac80211(sta);
3521         }
3522
3523         return NULL;
3524 }
3525
3526 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3527 {
3528         int i;
3529
3530         for (i = len - 1; i >= 0; i--) {
3531                 if (pn1[i] > pn2[i])
3532                         return 1;
3533                 if (pn1[i] < pn2[i])
3534                         return -1;
3535         }
3536
3537         return 0;
3538 }
3539
3540 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3541                                 u32 sta_id,
3542                                 struct ieee80211_key_conf *key, bool mcast,
3543                                 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3544                                 u8 key_offset, bool mfp)
3545 {
3546         union {
3547                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3548                 struct iwl_mvm_add_sta_key_cmd cmd;
3549         } u = {};
3550         __le16 key_flags;
3551         int ret;
3552         u32 status;
3553         u16 keyidx;
3554         u64 pn = 0;
3555         int i, size;
3556         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3557                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3558         int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3559                                             new_api ? 2 : 1);
3560
3561         if (sta_id == IWL_MVM_INVALID_STA)
3562                 return -EINVAL;
3563
3564         keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3565                  STA_KEY_FLG_KEYID_MSK;
3566         key_flags = cpu_to_le16(keyidx);
3567         key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3568
3569         switch (key->cipher) {
3570         case WLAN_CIPHER_SUITE_TKIP:
3571                 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3572                 if (api_ver >= 2) {
3573                         memcpy((void *)&u.cmd.tx_mic_key,
3574                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3575                                IWL_MIC_KEY_SIZE);
3576
3577                         memcpy((void *)&u.cmd.rx_mic_key,
3578                                &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3579                                IWL_MIC_KEY_SIZE);
3580                         pn = atomic64_read(&key->tx_pn);
3581
3582                 } else {
3583                         u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3584                         for (i = 0; i < 5; i++)
3585                                 u.cmd_v1.tkip_rx_ttak[i] =
3586                                         cpu_to_le16(tkip_p1k[i]);
3587                 }
3588                 memcpy(u.cmd.common.key, key->key, key->keylen);
3589                 break;
3590         case WLAN_CIPHER_SUITE_CCMP:
3591                 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3592                 memcpy(u.cmd.common.key, key->key, key->keylen);
3593                 if (api_ver >= 2)
3594                         pn = atomic64_read(&key->tx_pn);
3595                 break;
3596         case WLAN_CIPHER_SUITE_WEP104:
3597                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3598                 fallthrough;
3599         case WLAN_CIPHER_SUITE_WEP40:
3600                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3601                 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3602                 break;
3603         case WLAN_CIPHER_SUITE_GCMP_256:
3604                 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3605                 fallthrough;
3606         case WLAN_CIPHER_SUITE_GCMP:
3607                 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3608                 memcpy(u.cmd.common.key, key->key, key->keylen);
3609                 if (api_ver >= 2)
3610                         pn = atomic64_read(&key->tx_pn);
3611                 break;
3612         default:
3613                 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3614                 memcpy(u.cmd.common.key, key->key, key->keylen);
3615         }
3616
3617         if (mcast)
3618                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3619         if (mfp)
3620                 key_flags |= cpu_to_le16(STA_KEY_MFP);
3621
3622         u.cmd.common.key_offset = key_offset;
3623         u.cmd.common.key_flags = key_flags;
3624         u.cmd.common.sta_id = sta_id;
3625
3626         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3627                 i = 0;
3628         else
3629                 i = -1;
3630
3631         for (; i < IEEE80211_NUM_TIDS; i++) {
3632                 struct ieee80211_key_seq seq = {};
3633                 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3634                 int rx_pn_len = 8;
3635                 /* there's a hole at 2/3 in FW format depending on version */
3636                 int hole = api_ver >= 3 ? 0 : 2;
3637
3638                 ieee80211_get_key_rx_seq(key, i, &seq);
3639
3640                 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3641                         rx_pn[0] = seq.tkip.iv16;
3642                         rx_pn[1] = seq.tkip.iv16 >> 8;
3643                         rx_pn[2 + hole] = seq.tkip.iv32;
3644                         rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3645                         rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3646                         rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3647                 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3648                         rx_pn = seq.hw.seq;
3649                         rx_pn_len = seq.hw.seq_len;
3650                 } else {
3651                         rx_pn[0] = seq.ccmp.pn[0];
3652                         rx_pn[1] = seq.ccmp.pn[1];
3653                         rx_pn[2 + hole] = seq.ccmp.pn[2];
3654                         rx_pn[3 + hole] = seq.ccmp.pn[3];
3655                         rx_pn[4 + hole] = seq.ccmp.pn[4];
3656                         rx_pn[5 + hole] = seq.ccmp.pn[5];
3657                 }
3658
3659                 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3660                                    rx_pn_len) > 0)
3661                         memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3662                                rx_pn_len);
3663         }
3664
3665         if (api_ver >= 2) {
3666                 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3667                 size = sizeof(u.cmd);
3668         } else {
3669                 size = sizeof(u.cmd_v1);
3670         }
3671
3672         status = ADD_STA_SUCCESS;
3673         if (cmd_flags & CMD_ASYNC)
3674                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3675                                            &u.cmd);
3676         else
3677                 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3678                                                   &u.cmd, &status);
3679
3680         switch (status) {
3681         case ADD_STA_SUCCESS:
3682                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3683                 break;
3684         default:
3685                 ret = -EIO;
3686                 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3687                 break;
3688         }
3689
3690         return ret;
3691 }
3692
3693 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3694                                  struct ieee80211_key_conf *keyconf,
3695                                  u8 sta_id, bool remove_key)
3696 {
3697         struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3698
3699         /* verify the key details match the required command's expectations */
3700         if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3701                     (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3702                      keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3703                     (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3704                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3705                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3706                 return -EINVAL;
3707
3708         if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3709                     keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3710                 return -EINVAL;
3711
3712         igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3713         igtk_cmd.sta_id = cpu_to_le32(sta_id);
3714
3715         if (remove_key) {
3716                 /* This is a valid situation for IGTK */
3717                 if (sta_id == IWL_MVM_INVALID_STA)
3718                         return 0;
3719
3720                 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3721         } else {
3722                 struct ieee80211_key_seq seq;
3723                 const u8 *pn;
3724
3725                 switch (keyconf->cipher) {
3726                 case WLAN_CIPHER_SUITE_AES_CMAC:
3727                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3728                         break;
3729                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3730                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3731                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3732                         break;
3733                 default:
3734                         return -EINVAL;
3735                 }
3736
3737                 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3738                 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3739                         igtk_cmd.ctrl_flags |=
3740                                 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3741                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3742                 pn = seq.aes_cmac.pn;
3743                 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3744                                                        ((u64) pn[4] << 8) |
3745                                                        ((u64) pn[3] << 16) |
3746                                                        ((u64) pn[2] << 24) |
3747                                                        ((u64) pn[1] << 32) |
3748                                                        ((u64) pn[0] << 40));
3749         }
3750
3751         IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3752                        remove_key ? "removing" : "installing",
3753                        keyconf->keyidx >= 6 ? "B" : "",
3754                        keyconf->keyidx, igtk_cmd.sta_id);
3755
3756         if (!iwl_mvm_has_new_rx_api(mvm)) {
3757                 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3758                         .ctrl_flags = igtk_cmd.ctrl_flags,
3759                         .key_id = igtk_cmd.key_id,
3760                         .sta_id = igtk_cmd.sta_id,
3761                         .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3762                 };
3763
3764                 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3765                        ARRAY_SIZE(igtk_cmd_v1.igtk));
3766                 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3767                                             sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3768         }
3769         return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3770                                     sizeof(igtk_cmd), &igtk_cmd);
3771 }
3772
3773
3774 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3775                                        struct ieee80211_vif *vif,
3776                                        struct ieee80211_sta *sta)
3777 {
3778         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3779
3780         if (sta)
3781                 return sta->addr;
3782
3783         if (vif->type == NL80211_IFTYPE_STATION &&
3784             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3785                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3786                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3787                                                 lockdep_is_held(&mvm->mutex));
3788                 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3789                         return NULL;
3790
3791                 return sta->addr;
3792         }
3793
3794
3795         return NULL;
3796 }
3797
3798 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3799                                  struct ieee80211_vif *vif,
3800                                  struct ieee80211_sta *sta,
3801                                  struct ieee80211_key_conf *keyconf,
3802                                  u8 key_offset,
3803                                  bool mcast)
3804 {
3805         const u8 *addr;
3806         struct ieee80211_key_seq seq;
3807         u16 p1k[5];
3808         u32 sta_id;
3809         bool mfp = false;
3810
3811         if (sta) {
3812                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3813
3814                 sta_id = mvm_sta->deflink.sta_id;
3815                 mfp = sta->mfp;
3816         } else if (vif->type == NL80211_IFTYPE_AP &&
3817                    !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3818                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3819
3820                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3821         } else {
3822                 IWL_ERR(mvm, "Failed to find station id\n");
3823                 return -EINVAL;
3824         }
3825
3826         if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3827                 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3828                 if (!addr) {
3829                         IWL_ERR(mvm, "Failed to find mac address\n");
3830                         return -EINVAL;
3831                 }
3832
3833                 /* get phase 1 key from mac80211 */
3834                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3835                 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3836
3837                 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3838                                             seq.tkip.iv32, p1k, 0, key_offset,
3839                                             mfp);
3840         }
3841
3842         return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3843                                     0, NULL, 0, key_offset, mfp);
3844 }
3845
3846 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3847                         struct ieee80211_vif *vif,
3848                         struct ieee80211_sta *sta,
3849                         struct ieee80211_key_conf *keyconf,
3850                         u8 key_offset)
3851 {
3852         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3853         struct iwl_mvm_sta *mvm_sta;
3854         u8 sta_id = IWL_MVM_INVALID_STA;
3855         int ret;
3856         static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3857
3858         lockdep_assert_held(&mvm->mutex);
3859
3860         if (vif->type != NL80211_IFTYPE_AP ||
3861             keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3862                 /* Get the station id from the mvm local station table */
3863                 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3864                 if (!mvm_sta) {
3865                         IWL_ERR(mvm, "Failed to find station\n");
3866                         return -EINVAL;
3867                 }
3868                 sta_id = mvm_sta->deflink.sta_id;
3869
3870                 /*
3871                  * It is possible that the 'sta' parameter is NULL, and thus
3872                  * there is a need to retrieve the sta from the local station
3873                  * table.
3874                  */
3875                 if (!sta) {
3876                         sta = rcu_dereference_protected(
3877                                 mvm->fw_id_to_mac_id[sta_id],
3878                                 lockdep_is_held(&mvm->mutex));
3879                         if (IS_ERR_OR_NULL(sta)) {
3880                                 IWL_ERR(mvm, "Invalid station id\n");
3881                                 return -EINVAL;
3882                         }
3883                 }
3884
3885                 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3886                         return -EINVAL;
3887         } else {
3888                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3889
3890                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3891         }
3892
3893         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3894             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3895             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3896                 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3897                 goto end;
3898         }
3899
3900         /* If the key_offset is not pre-assigned, we need to find a
3901          * new offset to use.  In normal cases, the offset is not
3902          * pre-assigned, but during HW_RESTART we want to reuse the
3903          * same indices, so we pass them when this function is called.
3904          *
3905          * In D3 entry, we need to hardcoded the indices (because the
3906          * firmware hardcodes the PTK offset to 0).  In this case, we
3907          * need to make sure we don't overwrite the hw_key_idx in the
3908          * keyconf structure, because otherwise we cannot configure
3909          * the original ones back when resuming.
3910          */
3911         if (key_offset == STA_KEY_IDX_INVALID) {
3912                 key_offset  = iwl_mvm_set_fw_key_idx(mvm);
3913                 if (key_offset == STA_KEY_IDX_INVALID)
3914                         return -ENOSPC;
3915                 keyconf->hw_key_idx = key_offset;
3916         }
3917
3918         ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3919         if (ret)
3920                 goto end;
3921
3922         /*
3923          * For WEP, the same key is used for multicast and unicast. Upload it
3924          * again, using the same key offset, and now pointing the other one
3925          * to the same key slot (offset).
3926          * If this fails, remove the original as well.
3927          */
3928         if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3929              keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3930             sta) {
3931                 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3932                                             key_offset, !mcast);
3933                 if (ret) {
3934                         __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3935                         goto end;
3936                 }
3937         }
3938
3939         __set_bit(key_offset, mvm->fw_key_table);
3940
3941 end:
3942         IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3943                       keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3944                       sta ? sta->addr : zero_addr, ret);
3945         return ret;
3946 }
3947
3948 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3949                            struct ieee80211_vif *vif,
3950                            struct ieee80211_sta *sta,
3951                            struct ieee80211_key_conf *keyconf)
3952 {
3953         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3954         struct iwl_mvm_sta *mvm_sta;
3955         u8 sta_id = IWL_MVM_INVALID_STA;
3956         int ret, i;
3957
3958         lockdep_assert_held(&mvm->mutex);
3959
3960         /* Get the station from the mvm local station table */
3961         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3962         if (mvm_sta)
3963                 sta_id = mvm_sta->deflink.sta_id;
3964         else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3965                 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3966
3967
3968         IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3969                       keyconf->keyidx, sta_id);
3970
3971         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3972             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3973             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3974                 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3975
3976         if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3977                 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3978                         keyconf->hw_key_idx);
3979                 return -ENOENT;
3980         }
3981
3982         /* track which key was deleted last */
3983         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3984                 if (mvm->fw_key_deleted[i] < U8_MAX)
3985                         mvm->fw_key_deleted[i]++;
3986         }
3987         mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3988
3989         if (sta && !mvm_sta) {
3990                 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3991                 return 0;
3992         }
3993
3994         ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3995         if (ret)
3996                 return ret;
3997
3998         /* delete WEP key twice to get rid of (now useless) offset */
3999         if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4000             keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4001                 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4002
4003         return ret;
4004 }
4005
4006 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4007                              struct ieee80211_vif *vif,
4008                              struct ieee80211_key_conf *keyconf,
4009                              struct ieee80211_sta *sta, u32 iv32,
4010                              u16 *phase1key)
4011 {
4012         struct iwl_mvm_sta *mvm_sta;
4013         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4014         bool mfp = sta ? sta->mfp : false;
4015
4016         rcu_read_lock();
4017
4018         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4019         if (WARN_ON_ONCE(!mvm_sta))
4020                 goto unlock;
4021         iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4022                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4023                              mfp);
4024
4025  unlock:
4026         rcu_read_unlock();
4027 }
4028
4029 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4030                                 struct ieee80211_sta *sta)
4031 {
4032         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4033         struct iwl_mvm_add_sta_cmd cmd = {
4034                 .add_modify = STA_MODE_MODIFY,
4035                 .sta_id = mvmsta->deflink.sta_id,
4036                 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4037                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4038         };
4039         int ret;
4040
4041         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4042                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4043         if (ret)
4044                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4045 }
4046
4047 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4048                                        struct ieee80211_sta *sta,
4049                                        enum ieee80211_frame_release_type reason,
4050                                        u16 cnt, u16 tids, bool more_data,
4051                                        bool single_sta_queue)
4052 {
4053         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4054         struct iwl_mvm_add_sta_cmd cmd = {
4055                 .add_modify = STA_MODE_MODIFY,
4056                 .sta_id = mvmsta->deflink.sta_id,
4057                 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4058                 .sleep_tx_count = cpu_to_le16(cnt),
4059                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4060         };
4061         int tid, ret;
4062         unsigned long _tids = tids;
4063
4064         /* convert TIDs to ACs - we don't support TSPEC so that's OK
4065          * Note that this field is reserved and unused by firmware not
4066          * supporting GO uAPSD, so it's safe to always do this.
4067          */
4068         for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4069                 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4070
4071         /* If we're releasing frames from aggregation or dqa queues then check
4072          * if all the queues that we're releasing frames from, combined, have:
4073          *  - more frames than the service period, in which case more_data
4074          *    needs to be set
4075          *  - fewer than 'cnt' frames, in which case we need to adjust the
4076          *    firmware command (but do that unconditionally)
4077          */
4078         if (single_sta_queue) {
4079                 int remaining = cnt;
4080                 int sleep_tx_count;
4081
4082                 spin_lock_bh(&mvmsta->lock);
4083                 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4084                         struct iwl_mvm_tid_data *tid_data;
4085                         u16 n_queued;
4086
4087                         tid_data = &mvmsta->tid_data[tid];
4088
4089                         n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4090                         if (n_queued > remaining) {
4091                                 more_data = true;
4092                                 remaining = 0;
4093                                 break;
4094                         }
4095                         remaining -= n_queued;
4096                 }
4097                 sleep_tx_count = cnt - remaining;
4098                 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4099                         mvmsta->sleep_tx_count = sleep_tx_count;
4100                 spin_unlock_bh(&mvmsta->lock);
4101
4102                 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4103                 if (WARN_ON(cnt - remaining == 0)) {
4104                         ieee80211_sta_eosp(sta);
4105                         return;
4106                 }
4107         }
4108
4109         /* Note: this is ignored by firmware not supporting GO uAPSD */
4110         if (more_data)
4111                 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4112
4113         if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4114                 mvmsta->next_status_eosp = true;
4115                 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4116         } else {
4117                 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4118         }
4119
4120         /* block the Tx queues until the FW updated the sleep Tx count */
4121         iwl_trans_block_txq_ptrs(mvm->trans, true);
4122
4123         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4124                                    CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
4125                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4126         if (ret)
4127                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4128 }
4129
4130 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4131                            struct iwl_rx_cmd_buffer *rxb)
4132 {
4133         struct iwl_rx_packet *pkt = rxb_addr(rxb);
4134         struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4135         struct ieee80211_sta *sta;
4136         u32 sta_id = le32_to_cpu(notif->sta_id);
4137
4138         if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4139                 return;
4140
4141         rcu_read_lock();
4142         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4143         if (!IS_ERR_OR_NULL(sta))
4144                 ieee80211_sta_eosp(sta);
4145         rcu_read_unlock();
4146 }
4147
4148 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4149                                    struct iwl_mvm_sta *mvmsta,
4150                                    bool disable)
4151 {
4152         struct iwl_mvm_add_sta_cmd cmd = {
4153                 .add_modify = STA_MODE_MODIFY,
4154                 .sta_id = mvmsta->deflink.sta_id,
4155                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4156                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4157                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4158         };
4159         int ret;
4160
4161         if (mvm->mld_api_is_used) {
4162                 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4163                 return;
4164         }
4165
4166         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4167                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4168         if (ret)
4169                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4170 }
4171
4172 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4173                                       struct ieee80211_sta *sta,
4174                                       bool disable)
4175 {
4176         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4177
4178         if (mvm->mld_api_is_used) {
4179                 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4180                 return;
4181         }
4182
4183         spin_lock_bh(&mvm_sta->lock);
4184
4185         if (mvm_sta->disable_tx == disable) {
4186                 spin_unlock_bh(&mvm_sta->lock);
4187                 return;
4188         }
4189
4190         mvm_sta->disable_tx = disable;
4191
4192         /*
4193          * If sta PS state is handled by mac80211, tell it to start/stop
4194          * queuing tx for this station.
4195          */
4196         if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4197                 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4198
4199         iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4200
4201         spin_unlock_bh(&mvm_sta->lock);
4202 }
4203
4204 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4205                                               struct iwl_mvm_vif *mvmvif,
4206                                               struct iwl_mvm_int_sta *sta,
4207                                               bool disable)
4208 {
4209         u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4210         struct iwl_mvm_add_sta_cmd cmd = {
4211                 .add_modify = STA_MODE_MODIFY,
4212                 .sta_id = sta->sta_id,
4213                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4214                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4215                 .mac_id_n_color = cpu_to_le32(id),
4216         };
4217         int ret;
4218
4219         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4220                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4221         if (ret)
4222                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4223 }
4224
4225 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4226                                        struct iwl_mvm_vif *mvmvif,
4227                                        bool disable)
4228 {
4229         struct ieee80211_sta *sta;
4230         struct iwl_mvm_sta *mvm_sta;
4231         int i;
4232
4233         if (mvm->mld_api_is_used) {
4234                 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable);
4235                 return;
4236         }
4237
4238         rcu_read_lock();
4239
4240         /* Block/unblock all the stations of the given mvmvif */
4241         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4242                 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4243                 if (IS_ERR_OR_NULL(sta))
4244                         continue;
4245
4246                 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4247                 if (mvm_sta->mac_id_n_color !=
4248                     FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4249                         continue;
4250
4251                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4252         }
4253
4254         rcu_read_unlock();
4255
4256         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4257                 return;
4258
4259         /* Need to block/unblock also multicast station */
4260         if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA)
4261                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4262                                                   &mvmvif->deflink.mcast_sta,
4263                                                   disable);
4264
4265         /*
4266          * Only unblock the broadcast station (FW blocks it for immediate
4267          * quiet, not the driver)
4268          */
4269         if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA)
4270                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4271                                                   &mvmvif->deflink.bcast_sta,
4272                                                   disable);
4273 }
4274
4275 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4276 {
4277         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4278         struct iwl_mvm_sta *mvmsta;
4279
4280         rcu_read_lock();
4281
4282         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4283
4284         if (mvmsta)
4285                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4286
4287         rcu_read_unlock();
4288 }
4289
4290 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4291 {
4292         u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4293
4294         /*
4295          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4296          * to align the wrap around of ssn so we compare relevant values.
4297          */
4298         if (mvm->trans->trans_cfg->gen2)
4299                 sn &= 0xff;
4300
4301         return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4302 }
4303
4304 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4305                          struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4306                          u8 *key, u32 key_len)
4307 {
4308         int ret;
4309         u16 queue;
4310         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4311         struct ieee80211_key_conf *keyconf;
4312         unsigned int wdg_timeout =
4313                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
4314         bool mld = iwl_mvm_has_mld_api(mvm->fw);
4315         u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK;
4316
4317         ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4318                                        NL80211_IFTYPE_UNSPECIFIED, type);
4319         if (ret)
4320                 return ret;
4321
4322         if (mld)
4323                 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4324                                                          mvmvif->deflink.fw_link_id,
4325                                                          &queue,
4326                                                          IWL_MAX_TID_COUNT,
4327                                                          &wdg_timeout);
4328         else
4329                 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4330                                                      mvmvif->color, addr, sta,
4331                                                      &queue,
4332                                                      IWL_MVM_TX_FIFO_BE);
4333         if (ret)
4334                 goto out;
4335
4336         keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL);
4337         if (!keyconf) {
4338                 ret = -ENOBUFS;
4339                 goto out;
4340         }
4341
4342         keyconf->cipher = cipher;
4343         memcpy(keyconf->key, key, key_len);
4344         keyconf->keylen = key_len;
4345         keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4346
4347         if (mld) {
4348                 /* The MFP flag is set according to the station mfp field. Since
4349                  * we don't have a station, set it manually.
4350                  */
4351                 u32 key_flags =
4352                         iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4353                         IWL_SEC_KEY_FLAG_MFP;
4354                 u32 sta_mask = BIT(sta->sta_id);
4355
4356                 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4357         } else {
4358                 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4359                                            0, NULL, 0, 0, true);
4360         }
4361
4362         kfree(keyconf);
4363         return 0;
4364 out:
4365         iwl_mvm_dealloc_int_sta(mvm, sta);
4366         return ret;
4367 }
4368
4369 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4370                                    struct ieee80211_vif *vif,
4371                                    u32 id)
4372 {
4373         struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4374                 .id = cpu_to_le32(id),
4375         };
4376         int ret;
4377
4378         ret = iwl_mvm_send_cmd_pdu(mvm,
4379                                    WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4380                                    CMD_ASYNC,
4381                                    sizeof(cancel_channel_switch_cmd),
4382                                    &cancel_channel_switch_cmd);
4383         if (ret)
4384                 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4385 }