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, 2018-2024 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->chanreq.oper.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.chanreq.oper.chan->band == NL80211_BAND_6GHZ)
 212                 add_sta_cmd.station_flags_msk |=
 213                         cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
 214                                     STA_FLG_AGG_MPDU_DENS_MSK);
 215
 216         mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink,
 217                                                &mvm_sta->vif->bss_conf,
 218                                                &agg_size);
 219         add_sta_cmd.station_flags |=
 220                 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
 221         add_sta_cmd.station_flags |=
 222                 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
 223
 224         if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)
 225                 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);
 226
 227         if (sta->wme) {
 228                 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;
 229                 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta);
 230                 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;
 231         }
 232
 233         status = ADD_STA_SUCCESS;
 234         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
 235                                           iwl_mvm_add_sta_cmd_size(mvm),
 236                                           &add_sta_cmd, &status);
 237         if (ret)
 238                 return ret;
 239
 240         switch (status & IWL_ADD_STA_STATUS_MASK) {
 241         case ADD_STA_SUCCESS:
 242                 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
 243                 break;
 244         default:
 245                 ret = -EIO;
 246                 IWL_ERR(mvm, "ADD_STA failed\n");
 247                 break;
 248         }
 249
 250         return ret;
 251 }
 252
 253 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)
 254 {
 255         struct iwl_mvm_baid_data *data =
 256                 from_timer(data, t, session_timer);
 257         struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;
 258         struct iwl_mvm_baid_data *ba_data;
 259         struct ieee80211_sta *sta;
 260         struct iwl_mvm_sta *mvm_sta;
 261         unsigned long timeout;
 262         unsigned int sta_id;
 263
 264         rcu_read_lock();
 265
 266         ba_data = rcu_dereference(*rcu_ptr);
 267
 268         if (WARN_ON(!ba_data))
 269                 goto unlock;
 270
 271         if (!ba_data->timeout)
 272                 goto unlock;
 273
 274         timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
 275         if (time_is_after_jiffies(timeout)) {
 276                 mod_timer(&ba_data->session_timer, timeout);
 277                 goto unlock;
 278         }
 279
 280         /* Timer expired */
 281         sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */
 282         sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]);
 283
 284         /*
 285          * sta should be valid unless the following happens:
 286          * The firmware asserts which triggers a reconfig flow, but
 287          * the reconfig fails before we set the pointer to sta into
 288          * the fw_id_to_mac_id pointer table. Mac80211 can't stop
 289          * A-MDPU and hence the timer continues to run. Then, the
 290          * timer expires and sta is NULL.
 291          */
 292         if (IS_ERR_OR_NULL(sta))
 293                 goto unlock;
 294
 295         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 296         ieee80211_rx_ba_timer_expired(mvm_sta->vif,
 297                                       sta->addr, ba_data->tid);
 298 unlock:
 299         rcu_read_unlock();
 300 }
 301
 302 /* Disable aggregations for a bitmap of TIDs for a given station */
 303 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
 304                                         unsigned long disable_agg_tids,
 305                                         bool remove_queue)
 306 {
 307         struct iwl_mvm_add_sta_cmd cmd = {};
 308         struct ieee80211_sta *sta;
 309         struct iwl_mvm_sta *mvmsta;
 310         u32 status;
 311         u8 sta_id;
 312
 313         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 314                 return -EINVAL;
 315
 316         sta_id = mvm->queue_info[queue].ra_sta_id;
 317
 318         rcu_read_lock();
 319
 320         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
 321
 322         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
 323                 rcu_read_unlock();
 324                 return -EINVAL;
 325         }
 326
 327         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 328
 329         mvmsta->tid_disable_agg |= disable_agg_tids;
 330
 331         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
 332         cmd.sta_id = mvmsta->deflink.sta_id;
 333         cmd.add_modify = STA_MODE_MODIFY;
 334         cmd.modify_mask = STA_MODIFY_QUEUES;
 335         if (disable_agg_tids)
 336                 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
 337         if (remove_queue)
 338                 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
 339         cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
 340         cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
 341
 342         rcu_read_unlock();
 343
 344         /* Notify FW of queue removal from the STA queues */
 345         status = ADD_STA_SUCCESS;
 346         return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
 347                                            iwl_mvm_add_sta_cmd_size(mvm),
 348                                            &cmd, &status);
 349 }
 350
 351 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 352                                int sta_id, u16 *queueptr, u8 tid)
 353 {
 354         int queue = *queueptr;
 355         struct iwl_scd_txq_cfg_cmd cmd = {
 356                 .scd_queue = queue,
 357                 .action = SCD_CFG_DISABLE_QUEUE,
 358         };
 359         int ret;
 360
 361         lockdep_assert_held(&mvm->mutex);
 362
 363         if (iwl_mvm_has_new_tx_api(mvm)) {
 364                 if (mvm->sta_remove_requires_queue_remove) {
 365                         u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
 366                                              SCD_QUEUE_CONFIG_CMD);
 367                         struct iwl_scd_queue_cfg_cmd remove_cmd = {
 368                                 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),
 369                                 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)),
 370                         };
 371
 372                         if (tid == IWL_MAX_TID_COUNT)
 373                                 tid = IWL_MGMT_TID;
 374
 375                         remove_cmd.u.remove.tid = cpu_to_le32(tid);
 376
 377                         ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,
 378                                                    sizeof(remove_cmd),
 379                                                    &remove_cmd);
 380                 } else {
 381                         ret = 0;
 382                 }
 383
 384                 iwl_trans_txq_free(mvm->trans, queue);
 385                 *queueptr = IWL_MVM_INVALID_QUEUE;
 386
 387                 return ret;
 388         }
 389
 390         if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0))
 391                 return 0;
 392
 393         mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
 394
 395         cmd.action = mvm->queue_info[queue].tid_bitmap ?
 396                 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
 397         if (cmd.action == SCD_CFG_DISABLE_QUEUE)
 398                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
 399
 400         IWL_DEBUG_TX_QUEUES(mvm,
 401                             "Disabling TXQ #%d tids=0x%x\n",
 402                             queue,
 403                             mvm->queue_info[queue].tid_bitmap);
 404
 405         /* If the queue is still enabled - nothing left to do in this func */
 406         if (cmd.action == SCD_CFG_ENABLE_QUEUE)
 407                 return 0;
 408
 409         cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
 410         cmd.tid = mvm->queue_info[queue].txq_tid;
 411
 412         /* Make sure queue info is correct even though we overwrite it */
 413         WARN(mvm->queue_info[queue].tid_bitmap,
 414              "TXQ #%d info out-of-sync - tids=0x%x\n",
 415              queue, mvm->queue_info[queue].tid_bitmap);
 416
 417         /* If we are here - the queue is freed and we can zero out these vals */
 418         mvm->queue_info[queue].tid_bitmap = 0;
 419
 420         if (sta) {
 421                 struct iwl_mvm_txq *mvmtxq =
 422                         iwl_mvm_txq_from_tid(sta, tid);
 423
 424                 spin_lock_bh(&mvm->add_stream_lock);
 425                 list_del_init(&mvmtxq->list);
 426                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
 427                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
 428                 spin_unlock_bh(&mvm->add_stream_lock);
 429         }
 430
 431         /* Regardless if this is a reserved TXQ for a STA - mark it as false */
 432         mvm->queue_info[queue].reserved = false;
 433
 434         iwl_trans_txq_disable(mvm->trans, queue, false);
 435         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0,
 436                                    sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
 437
 438         if (ret)
 439                 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
 440                         queue, ret);
 441         return ret;
 442 }
 443
 444 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
 445 {
 446         struct ieee80211_sta *sta;
 447         struct iwl_mvm_sta *mvmsta;
 448         unsigned long tid_bitmap;
 449         unsigned long agg_tids = 0;
 450         u8 sta_id;
 451         int tid;
 452
 453         lockdep_assert_held(&mvm->mutex);
 454
 455         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 456                 return -EINVAL;
 457
 458         sta_id = mvm->queue_info[queue].ra_sta_id;
 459         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
 460
 461         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 462                                         lockdep_is_held(&mvm->mutex));
 463
 464         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 465                 return -EINVAL;
 466
 467         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 468
 469         spin_lock_bh(&mvmsta->lock);
 470         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
 471                 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
 472                         agg_tids |= BIT(tid);
 473         }
 474         spin_unlock_bh(&mvmsta->lock);
 475
 476         return agg_tids;
 477 }
 478
 479 /*
 480  * Remove a queue from a station's resources.
 481  * Note that this only marks as free. It DOESN'T delete a BA agreement, and
 482  * doesn't disable the queue
 483  */
 484 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
 485 {
 486         struct ieee80211_sta *sta;
 487         struct iwl_mvm_sta *mvmsta;
 488         unsigned long tid_bitmap;
 489         unsigned long disable_agg_tids = 0;
 490         u8 sta_id;
 491         int tid;
 492
 493         lockdep_assert_held(&mvm->mutex);
 494
 495         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 496                 return -EINVAL;
 497
 498         sta_id = mvm->queue_info[queue].ra_sta_id;
 499         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
 500
 501         rcu_read_lock();
 502
 503         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
 504
 505         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
 506                 rcu_read_unlock();
 507                 return 0;
 508         }
 509
 510         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 511
 512         spin_lock_bh(&mvmsta->lock);
 513         /* Unmap MAC queues and TIDs from this queue */
 514         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
 515                 struct iwl_mvm_txq *mvmtxq =
 516                         iwl_mvm_txq_from_tid(sta, tid);
 517
 518                 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
 519                         disable_agg_tids |= BIT(tid);
 520                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
 521
 522                 spin_lock_bh(&mvm->add_stream_lock);
 523                 list_del_init(&mvmtxq->list);
 524                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
 525                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
 526                 spin_unlock_bh(&mvm->add_stream_lock);
 527         }
 528
 529         mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
 530         spin_unlock_bh(&mvmsta->lock);
 531
 532         rcu_read_unlock();
 533
 534         /*
 535          * The TX path may have been using this TXQ_ID from the tid_data,
 536          * so make sure it's no longer running so that we can safely reuse
 537          * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE
 538          * above, but nothing guarantees we've stopped using them. Thus,
 539          * without this, we could get to iwl_mvm_disable_txq() and remove
 540          * the queue while still sending frames to it.
 541          */
 542         synchronize_net();
 543
 544         return disable_agg_tids;
 545 }
 546
 547 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,
 548                                        struct ieee80211_sta *old_sta,
 549                                        u8 new_sta_id)
 550 {
 551         struct iwl_mvm_sta *mvmsta;
 552         u8 sta_id, tid;
 553         unsigned long disable_agg_tids = 0;
 554         bool same_sta;
 555         u16 queue_tmp = queue;
 556         int ret;
 557
 558         lockdep_assert_held(&mvm->mutex);
 559
 560         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 561                 return -EINVAL;
 562
 563         sta_id = mvm->queue_info[queue].ra_sta_id;
 564         tid = mvm->queue_info[queue].txq_tid;
 565
 566         same_sta = sta_id == new_sta_id;
 567
 568         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 569         if (WARN_ON(!mvmsta))
 570                 return -EINVAL;
 571
 572         disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
 573         /* Disable the queue */
 574         if (disable_agg_tids)
 575                 iwl_mvm_invalidate_sta_queue(mvm, queue,
 576                                              disable_agg_tids, false);
 577
 578         ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid);
 579         if (ret) {
 580                 IWL_ERR(mvm,
 581                         "Failed to free inactive queue %d (ret=%d)\n",
 582                         queue, ret);
 583
 584                 return ret;
 585         }
 586
 587         /* If TXQ is allocated to another STA, update removal in FW */
 588         if (!same_sta)
 589                 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
 590
 591         return 0;
 592 }
 593
 594 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
 595                                     unsigned long tfd_queue_mask, u8 ac)
 596 {
 597         int queue = 0;
 598         u8 ac_to_queue[IEEE80211_NUM_ACS];
 599         int i;
 600
 601         /*
 602          * This protects us against grabbing a queue that's being reconfigured
 603          * by the inactivity checker.
 604          */
 605         lockdep_assert_held(&mvm->mutex);
 606
 607         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 608                 return -EINVAL;
 609
 610         memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
 611
 612         /* See what ACs the existing queues for this STA have */
 613         for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
 614                 /* Only DATA queues can be shared */
 615                 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
 616                     i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
 617                         continue;
 618
 619                 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
 620         }
 621
 622         /*
 623          * The queue to share is chosen only from DATA queues as follows (in
 624          * descending priority):
 625          * 1. An AC_BE queue
 626          * 2. Same AC queue
 627          * 3. Highest AC queue that is lower than new AC
 628          * 4. Any existing AC (there always is at least 1 DATA queue)
 629          */
 630
 631         /* Priority 1: An AC_BE queue */
 632         if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
 633                 queue = ac_to_queue[IEEE80211_AC_BE];
 634         /* Priority 2: Same AC queue */
 635         else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 636                 queue = ac_to_queue[ac];
 637         /* Priority 3a: If new AC is VO and VI exists - use VI */
 638         else if (ac == IEEE80211_AC_VO &&
 639                  ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
 640                 queue = ac_to_queue[IEEE80211_AC_VI];
 641         /* Priority 3b: No BE so only AC less than the new one is BK */
 642         else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
 643                 queue = ac_to_queue[IEEE80211_AC_BK];
 644         /* Priority 4a: No BE nor BK - use VI if exists */
 645         else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
 646                 queue = ac_to_queue[IEEE80211_AC_VI];
 647         /* Priority 4b: No BE, BK nor VI - use VO if exists */
 648         else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
 649                 queue = ac_to_queue[IEEE80211_AC_VO];
 650
 651         /* Make sure queue found (or not) is legal */
 652         if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
 653             !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
 654             (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
 655                 IWL_ERR(mvm, "No DATA queues available to share\n");
 656                 return -ENOSPC;
 657         }
 658
 659         return queue;
 660 }
 661
 662 /* Re-configure the SCD for a queue that has already been configured */
 663 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo,
 664                                 int sta_id, int tid, int frame_limit, u16 ssn)
 665 {
 666         struct iwl_scd_txq_cfg_cmd cmd = {
 667                 .scd_queue = queue,
 668                 .action = SCD_CFG_ENABLE_QUEUE,
 669                 .window = frame_limit,
 670                 .sta_id = sta_id,
 671                 .ssn = cpu_to_le16(ssn),
 672                 .tx_fifo = fifo,
 673                 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
 674                               queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
 675                 .tid = tid,
 676         };
 677         int ret;
 678
 679         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 680                 return -EINVAL;
 681
 682         if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
 683                  "Trying to reconfig unallocated queue %d\n", queue))
 684                 return -ENXIO;
 685
 686         IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
 687
 688         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 689         WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
 690                   queue, fifo, ret);
 691
 692         return ret;
 693 }
 694
 695 /*
 696  * If a given queue has a higher AC than the TID stream that is being compared
 697  * to, the queue needs to be redirected to the lower AC. This function does that
 698  * in such a case, otherwise - if no redirection required - it does nothing,
 699  * unless the %force param is true.
 700  */
 701 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid,
 702                                   int ac, int ssn, unsigned int wdg_timeout,
 703                                   bool force, struct iwl_mvm_txq *txq)
 704 {
 705         struct iwl_scd_txq_cfg_cmd cmd = {
 706                 .scd_queue = queue,
 707                 .action = SCD_CFG_DISABLE_QUEUE,
 708         };
 709         bool shared_queue;
 710         int ret;
 711
 712         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 713                 return -EINVAL;
 714
 715         /*
 716          * If the AC is lower than current one - FIFO needs to be redirected to
 717          * the lowest one of the streams in the queue. Check if this is needed
 718          * here.
 719          * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
 720          * value 3 and VO with value 0, so to check if ac X is lower than ac Y
 721          * we need to check if the numerical value of X is LARGER than of Y.
 722          */
 723         if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
 724                 IWL_DEBUG_TX_QUEUES(mvm,
 725                                     "No redirection needed on TXQ #%d\n",
 726                                     queue);
 727                 return 0;
 728         }
 729
 730         cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
 731         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
 732         cmd.tid = mvm->queue_info[queue].txq_tid;
 733         shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1;
 734
 735         IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
 736                             queue, iwl_mvm_ac_to_tx_fifo[ac]);
 737
 738         /* Stop the queue and wait for it to empty */
 739         set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
 740
 741         ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));
 742         if (ret) {
 743                 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
 744                         queue);
 745                 ret = -EIO;
 746                 goto out;
 747         }
 748
 749         /* Before redirecting the queue we need to de-activate it */
 750         iwl_trans_txq_disable(mvm->trans, queue, false);
 751         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 752         if (ret)
 753                 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
 754                         ret);
 755
 756         /* Make sure the SCD wrptr is correctly set before reconfiguring */
 757         iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
 758
 759         /* Update the TID "owner" of the queue */
 760         mvm->queue_info[queue].txq_tid = tid;
 761
 762         /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
 763
 764         /* Redirect to lower AC */
 765         iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
 766                              cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);
 767
 768         /* Update AC marking of the queue */
 769         mvm->queue_info[queue].mac80211_ac = ac;
 770
 771         /*
 772          * Mark queue as shared in transport if shared
 773          * Note this has to be done after queue enablement because enablement
 774          * can also set this value, and there is no indication there to shared
 775          * queues
 776          */
 777         if (shared_queue)
 778                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
 779
 780 out:
 781         /* Continue using the queue */
 782         clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);
 783
 784         return ret;
 785 }
 786
 787 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id,
 788                                    u8 minq, u8 maxq)
 789 {
 790         int i;
 791
 792         lockdep_assert_held(&mvm->mutex);
 793
 794         if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues,
 795                  "max queue %d >= num_of_queues (%d)", maxq,
 796                  mvm->trans->trans_cfg->base_params->num_of_queues))
 797                 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1;
 798
 799         /* This should not be hit with new TX path */
 800         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 801                 return -ENOSPC;
 802
 803         /* Start by looking for a free queue */
 804         for (i = minq; i <= maxq; i++)
 805                 if (mvm->queue_info[i].tid_bitmap == 0 &&
 806                     mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
 807                         return i;
 808
 809         return -ENOSPC;
 810 }
 811
 812 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta)
 813 {
 814         int max_size = IWL_DEFAULT_QUEUE_SIZE;
 815         unsigned int link_id;
 816
 817         /* this queue isn't used for traffic (cab_queue) */
 818         if (!sta)
 819                 return IWL_MGMT_QUEUE_SIZE;
 820
 821         rcu_read_lock();
 822
 823         for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {
 824                 struct ieee80211_link_sta *link =
 825                         rcu_dereference(sta->link[link_id]);
 826
 827                 if (!link)
 828                         continue;
 829
 830                 /* support for 512 ba size */
 831                 if (link->eht_cap.has_eht &&
 832                     max_size < IWL_DEFAULT_QUEUE_SIZE_EHT)
 833                         max_size = IWL_DEFAULT_QUEUE_SIZE_EHT;
 834
 835                 /* support for 256 ba size */
 836                 if (link->he_cap.has_he &&
 837                     max_size < IWL_DEFAULT_QUEUE_SIZE_HE)
 838                         max_size = IWL_DEFAULT_QUEUE_SIZE_HE;
 839         }
 840
 841         rcu_read_unlock();
 842         return max_size;
 843 }
 844
 845 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm,
 846                             struct ieee80211_sta *sta,
 847                             u8 sta_id, u8 tid, unsigned int timeout)
 848 {
 849         int queue, size;
 850         u32 sta_mask = 0;
 851
 852         if (tid == IWL_MAX_TID_COUNT) {
 853                 tid = IWL_MGMT_TID;
 854                 size = max_t(u32, IWL_MGMT_QUEUE_SIZE,
 855                              mvm->trans->cfg->min_txq_size);
 856         } else {
 857                 size = iwl_mvm_get_queue_size(sta);
 858         }
 859
 860         /* take the min with bc tbl entries allowed */
 861         size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16));
 862
 863         /* size needs to be power of 2 values for calculating read/write pointers */
 864         size = rounddown_pow_of_two(size);
 865
 866         if (sta) {
 867                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 868                 struct ieee80211_link_sta *link_sta;
 869                 unsigned int link_id;
 870
 871                 rcu_read_lock();
 872                 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {
 873                         struct iwl_mvm_link_sta *link =
 874                                 rcu_dereference_protected(mvmsta->link[link_id],
 875                                                           lockdep_is_held(&mvm->mutex));
 876
 877                         if (!link)
 878                                 continue;
 879
 880                         sta_mask |= BIT(link->sta_id);
 881                 }
 882                 rcu_read_unlock();
 883         } else {
 884                 sta_mask |= BIT(sta_id);
 885         }
 886
 887         if (!sta_mask)
 888                 return -EINVAL;
 889
 890         do {
 891                 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
 892                                             tid, size, timeout);
 893
 894                 if (queue < 0)
 895                         IWL_DEBUG_TX_QUEUES(mvm,
 896                                             "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n",
 897                                             size, sta_mask, tid, queue);
 898                 size /= 2;
 899         } while (queue < 0 && size >= 16);
 900
 901         if (queue < 0)
 902                 return queue;
 903
 904         IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
 905                             queue, sta_mask, tid);
 906
 907         return queue;
 908 }
 909
 910 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
 911                                         struct ieee80211_sta *sta, u8 ac,
 912                                         int tid)
 913 {
 914         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 915         struct iwl_mvm_txq *mvmtxq =
 916                 iwl_mvm_txq_from_tid(sta, tid);
 917         unsigned int wdg_timeout =
 918                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
 919         int queue = -1;
 920
 921         lockdep_assert_held(&mvm->mutex);
 922
 923         IWL_DEBUG_TX_QUEUES(mvm,
 924                             "Allocating queue for sta %d on tid %d\n",
 925                             mvmsta->deflink.sta_id, tid);
 926         queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
 927                                         tid, wdg_timeout);
 928         if (queue < 0)
 929                 return queue;
 930
 931         mvmtxq->txq_id = queue;
 932         mvm->tvqm_info[queue].txq_tid = tid;
 933         mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
 934
 935         IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
 936
 937         spin_lock_bh(&mvmsta->lock);
 938         mvmsta->tid_data[tid].txq_id = queue;
 939         spin_unlock_bh(&mvmsta->lock);
 940
 941         return 0;
 942 }
 943
 944 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
 945                                        struct ieee80211_sta *sta,
 946                                        int queue, u8 sta_id, u8 tid)
 947 {
 948         bool enable_queue = true;
 949
 950         /* Make sure this TID isn't already enabled */
 951         if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
 952                 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
 953                         queue, tid);
 954                 return false;
 955         }
 956
 957         /* Update mappings and refcounts */
 958         if (mvm->queue_info[queue].tid_bitmap)
 959                 enable_queue = false;
 960
 961         mvm->queue_info[queue].tid_bitmap |= BIT(tid);
 962         mvm->queue_info[queue].ra_sta_id = sta_id;
 963
 964         if (enable_queue) {
 965                 if (tid != IWL_MAX_TID_COUNT)
 966                         mvm->queue_info[queue].mac80211_ac =
 967                                 tid_to_mac80211_ac[tid];
 968                 else
 969                         mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
 970
 971                 mvm->queue_info[queue].txq_tid = tid;
 972         }
 973
 974         if (sta) {
 975                 struct iwl_mvm_txq *mvmtxq =
 976                         iwl_mvm_txq_from_tid(sta, tid);
 977
 978                 mvmtxq->txq_id = queue;
 979         }
 980
 981         IWL_DEBUG_TX_QUEUES(mvm,
 982                             "Enabling TXQ #%d tids=0x%x\n",
 983                             queue, mvm->queue_info[queue].tid_bitmap);
 984
 985         return enable_queue;
 986 }
 987
 988 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 989                                int queue, u16 ssn,
 990                                const struct iwl_trans_txq_scd_cfg *cfg,
 991                                unsigned int wdg_timeout)
 992 {
 993         struct iwl_scd_txq_cfg_cmd cmd = {
 994                 .scd_queue = queue,
 995                 .action = SCD_CFG_ENABLE_QUEUE,
 996                 .window = cfg->frame_limit,
 997                 .sta_id = cfg->sta_id,
 998                 .ssn = cpu_to_le16(ssn),
 999                 .tx_fifo = cfg->fifo,
1000                 .aggregate = cfg->aggregate,
1001                 .tid = cfg->tid,
1002         };
1003         bool inc_ssn;
1004
1005         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1006                 return false;
1007
1008         /* Send the enabling command if we need to */
1009         if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
1010                 return false;
1011
1012         inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
1013                                            NULL, wdg_timeout);
1014         if (inc_ssn)
1015                 le16_add_cpu(&cmd.ssn, 1);
1016
1017         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1018              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1019
1020         return inc_ssn;
1021 }
1022
1023 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1024 {
1025         struct iwl_scd_txq_cfg_cmd cmd = {
1026                 .scd_queue = queue,
1027                 .action = SCD_CFG_UPDATE_QUEUE_TID,
1028         };
1029         int tid;
1030         unsigned long tid_bitmap;
1031         int ret;
1032
1033         lockdep_assert_held(&mvm->mutex);
1034
1035         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1036                 return;
1037
1038         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1039
1040         if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1041                 return;
1042
1043         /* Find any TID for queue */
1044         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1045         cmd.tid = tid;
1046         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1047
1048         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1049         if (ret) {
1050                 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1051                         queue, ret);
1052                 return;
1053         }
1054
1055         mvm->queue_info[queue].txq_tid = tid;
1056         IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1057                             queue, tid);
1058 }
1059
1060 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1061 {
1062         struct ieee80211_sta *sta;
1063         struct iwl_mvm_sta *mvmsta;
1064         u8 sta_id;
1065         int tid = -1;
1066         unsigned long tid_bitmap;
1067         unsigned int wdg_timeout;
1068         int ssn;
1069         int ret = true;
1070
1071         /* queue sharing is disabled on new TX path */
1072         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1073                 return;
1074
1075         lockdep_assert_held(&mvm->mutex);
1076
1077         sta_id = mvm->queue_info[queue].ra_sta_id;
1078         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1079
1080         /* Find TID for queue, and make sure it is the only one on the queue */
1081         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1082         if (tid_bitmap != BIT(tid)) {
1083                 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1084                         queue, tid_bitmap);
1085                 return;
1086         }
1087
1088         IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1089                             tid);
1090
1091         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1092                                         lockdep_is_held(&mvm->mutex));
1093
1094         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1095                 return;
1096
1097         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1098         wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1099
1100         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1101
1102         ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1103                                      tid_to_mac80211_ac[tid], ssn,
1104                                      wdg_timeout, true,
1105                                      iwl_mvm_txq_from_tid(sta, tid));
1106         if (ret) {
1107                 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1108                 return;
1109         }
1110
1111         /* If aggs should be turned back on - do it */
1112         if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1113                 struct iwl_mvm_add_sta_cmd cmd = {0};
1114
1115                 mvmsta->tid_disable_agg &= ~BIT(tid);
1116
1117                 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1118                 cmd.sta_id = mvmsta->deflink.sta_id;
1119                 cmd.add_modify = STA_MODE_MODIFY;
1120                 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1121                 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1122                 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1123
1124                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1125                                            iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1126                 if (!ret) {
1127                         IWL_DEBUG_TX_QUEUES(mvm,
1128                                             "TXQ #%d is now aggregated again\n",
1129                                             queue);
1130
1131                         /* Mark queue intenally as aggregating again */
1132                         iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1133                 }
1134         }
1135
1136         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1137 }
1138
1139 /*
1140  * Remove inactive TIDs of a given queue.
1141  * If all queue TIDs are inactive - mark the queue as inactive
1142  * If only some the queue TIDs are inactive - unmap them from the queue
1143  *
1144  * Returns %true if all TIDs were removed and the queue could be reused.
1145  */
1146 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1147                                          struct iwl_mvm_sta *mvmsta, int queue,
1148                                          unsigned long tid_bitmap,
1149                                          unsigned long *unshare_queues,
1150                                          unsigned long *changetid_queues)
1151 {
1152         unsigned int tid;
1153
1154         lockdep_assert_held(&mvmsta->lock);
1155         lockdep_assert_held(&mvm->mutex);
1156
1157         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1158                 return false;
1159
1160         /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1161         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1162                 /* If some TFDs are still queued - don't mark TID as inactive */
1163                 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1164                         tid_bitmap &= ~BIT(tid);
1165
1166                 /* Don't mark as inactive any TID that has an active BA */
1167                 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1168                         tid_bitmap &= ~BIT(tid);
1169         }
1170
1171         /* If all TIDs in the queue are inactive - return it can be reused */
1172         if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1173                 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1174                 return true;
1175         }
1176
1177         /*
1178          * If we are here, this is a shared queue and not all TIDs timed-out.
1179          * Remove the ones that did.
1180          */
1181         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1182                 u16 q_tid_bitmap;
1183
1184                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1185                 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1186
1187                 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1188
1189                 /*
1190                  * We need to take into account a situation in which a TXQ was
1191                  * allocated to TID x, and then turned shared by adding TIDs y
1192                  * and z. If TID x becomes inactive and is removed from the TXQ,
1193                  * ownership must be given to one of the remaining TIDs.
1194                  * This is mainly because if TID x continues - a new queue can't
1195                  * be allocated for it as long as it is an owner of another TXQ.
1196                  *
1197                  * Mark this queue in the right bitmap, we'll send the command
1198                  * to the firmware later.
1199                  */
1200                 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1201                         set_bit(queue, changetid_queues);
1202
1203                 IWL_DEBUG_TX_QUEUES(mvm,
1204                                     "Removing inactive TID %d from shared Q:%d\n",
1205                                     tid, queue);
1206         }
1207
1208         IWL_DEBUG_TX_QUEUES(mvm,
1209                             "TXQ #%d left with tid bitmap 0x%x\n", queue,
1210                             mvm->queue_info[queue].tid_bitmap);
1211
1212         /*
1213          * There may be different TIDs with the same mac queues, so make
1214          * sure all TIDs have existing corresponding mac queues enabled
1215          */
1216         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1217
1218         /* If the queue is marked as shared - "unshare" it */
1219         if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1220             mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1221                 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1222                                     queue);
1223                 set_bit(queue, unshare_queues);
1224         }
1225
1226         return false;
1227 }
1228
1229 /*
1230  * Check for inactivity - this includes checking if any queue
1231  * can be unshared and finding one (and only one) that can be
1232  * reused.
1233  * This function is also invoked as a sort of clean-up task,
1234  * in which case @alloc_for_sta is IWL_MVM_INVALID_STA.
1235  *
1236  * Returns the queue number, or -ENOSPC.
1237  */
1238 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1239 {
1240         unsigned long now = jiffies;
1241         unsigned long unshare_queues = 0;
1242         unsigned long changetid_queues = 0;
1243         int i, ret, free_queue = -ENOSPC;
1244         struct ieee80211_sta *queue_owner  = NULL;
1245
1246         lockdep_assert_held(&mvm->mutex);
1247
1248         if (iwl_mvm_has_new_tx_api(mvm))
1249                 return -ENOSPC;
1250
1251         rcu_read_lock();
1252
1253         /* we skip the CMD queue below by starting at 1 */
1254         BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1255
1256         for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1257                 struct ieee80211_sta *sta;
1258                 struct iwl_mvm_sta *mvmsta;
1259                 u8 sta_id;
1260                 int tid;
1261                 unsigned long inactive_tid_bitmap = 0;
1262                 unsigned long queue_tid_bitmap;
1263
1264                 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1265                 if (!queue_tid_bitmap)
1266                         continue;
1267
1268                 /* If TXQ isn't in active use anyway - nothing to do here... */
1269                 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1270                     mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1271                         continue;
1272
1273                 /* Check to see if there are inactive TIDs on this queue */
1274                 for_each_set_bit(tid, &queue_tid_bitmap,
1275                                  IWL_MAX_TID_COUNT + 1) {
1276                         if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1277                                        IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1278                                 continue;
1279
1280                         inactive_tid_bitmap |= BIT(tid);
1281                 }
1282
1283                 /* If all TIDs are active - finish check on this queue */
1284                 if (!inactive_tid_bitmap)
1285                         continue;
1286
1287                 /*
1288                  * If we are here - the queue hadn't been served recently and is
1289                  * in use
1290                  */
1291
1292                 sta_id = mvm->queue_info[i].ra_sta_id;
1293                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1294
1295                 /*
1296                  * If the STA doesn't exist anymore, it isn't an error. It could
1297                  * be that it was removed since getting the queues, and in this
1298                  * case it should've inactivated its queues anyway.
1299                  */
1300                 if (IS_ERR_OR_NULL(sta))
1301                         continue;
1302
1303                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1304
1305                 spin_lock_bh(&mvmsta->lock);
1306                 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1307                                                    inactive_tid_bitmap,
1308                                                    &unshare_queues,
1309                                                    &changetid_queues);
1310                 if (ret && free_queue < 0) {
1311                         queue_owner = sta;
1312                         free_queue = i;
1313                 }
1314                 /* only unlock sta lock - we still need the queue info lock */
1315                 spin_unlock_bh(&mvmsta->lock);
1316         }
1317
1318
1319         /* Reconfigure queues requiring reconfiguation */
1320         for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1321                 iwl_mvm_unshare_queue(mvm, i);
1322         for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1323                 iwl_mvm_change_queue_tid(mvm, i);
1324
1325         rcu_read_unlock();
1326
1327         if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) {
1328                 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1329                                                   alloc_for_sta);
1330                 if (ret)
1331                         return ret;
1332         }
1333
1334         return free_queue;
1335 }
1336
1337 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1338                                    struct ieee80211_sta *sta, u8 ac, int tid)
1339 {
1340         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1341         struct iwl_trans_txq_scd_cfg cfg = {
1342                 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1343                 .sta_id = mvmsta->deflink.sta_id,
1344                 .tid = tid,
1345                 .frame_limit = IWL_FRAME_LIMIT,
1346         };
1347         unsigned int wdg_timeout =
1348                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
1349         int queue = -1;
1350         u16 queue_tmp;
1351         unsigned long disable_agg_tids = 0;
1352         enum iwl_mvm_agg_state queue_state;
1353         bool shared_queue = false, inc_ssn;
1354         int ssn;
1355         unsigned long tfd_queue_mask;
1356         int ret;
1357
1358         lockdep_assert_held(&mvm->mutex);
1359
1360         if (iwl_mvm_has_new_tx_api(mvm))
1361                 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1362
1363         spin_lock_bh(&mvmsta->lock);
1364         tfd_queue_mask = mvmsta->tfd_queue_msk;
1365         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1366         spin_unlock_bh(&mvmsta->lock);
1367
1368         if (tid == IWL_MAX_TID_COUNT) {
1369                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1370                                                 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1371                                                 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1372                 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1373                         IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1374                                             queue);
1375
1376                 /* If no such queue is found, we'll use a DATA queue instead */
1377         }
1378
1379         if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1380             (mvm->queue_info[mvmsta->reserved_queue].status ==
1381                         IWL_MVM_QUEUE_RESERVED)) {
1382                 queue = mvmsta->reserved_queue;
1383                 mvm->queue_info[queue].reserved = true;
1384                 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1385         }
1386
1387         if (queue < 0)
1388                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1389                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1390                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1391         if (queue < 0) {
1392                 /* try harder - perhaps kill an inactive queue */
1393                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1394         }
1395
1396         /* No free queue - we'll have to share */
1397         if (queue <= 0) {
1398                 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1399                 if (queue > 0) {
1400                         shared_queue = true;
1401                         mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1402                 }
1403         }
1404
1405         /*
1406          * Mark TXQ as ready, even though it hasn't been fully configured yet,
1407          * to make sure no one else takes it.
1408          * This will allow avoiding re-acquiring the lock at the end of the
1409          * configuration. On error we'll mark it back as free.
1410          */
1411         if (queue > 0 && !shared_queue)
1412                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1413
1414         /* This shouldn't happen - out of queues */
1415         if (WARN_ON(queue <= 0)) {
1416                 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1417                         tid, cfg.sta_id);
1418                 return queue;
1419         }
1420
1421         /*
1422          * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1423          * but for configuring the SCD to send A-MPDUs we need to mark the queue
1424          * as aggregatable.
1425          * Mark all DATA queues as allowing to be aggregated at some point
1426          */
1427         cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1428                          queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1429
1430         IWL_DEBUG_TX_QUEUES(mvm,
1431                             "Allocating %squeue #%d to sta %d on tid %d\n",
1432                             shared_queue ? "shared " : "", queue,
1433                             mvmsta->deflink.sta_id, tid);
1434
1435         if (shared_queue) {
1436                 /* Disable any open aggs on this queue */
1437                 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1438
1439                 if (disable_agg_tids) {
1440                         IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1441                                             queue);
1442                         iwl_mvm_invalidate_sta_queue(mvm, queue,
1443                                                      disable_agg_tids, false);
1444                 }
1445         }
1446
1447         inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1448
1449         /*
1450          * Mark queue as shared in transport if shared
1451          * Note this has to be done after queue enablement because enablement
1452          * can also set this value, and there is no indication there to shared
1453          * queues
1454          */
1455         if (shared_queue)
1456                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1457
1458         spin_lock_bh(&mvmsta->lock);
1459         /*
1460          * This looks racy, but it is not. We have only one packet for
1461          * this ra/tid in our Tx path since we stop the Qdisc when we
1462          * need to allocate a new TFD queue.
1463          */
1464         if (inc_ssn) {
1465                 mvmsta->tid_data[tid].seq_number += 0x10;
1466                 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1467         }
1468         mvmsta->tid_data[tid].txq_id = queue;
1469         mvmsta->tfd_queue_msk |= BIT(queue);
1470         queue_state = mvmsta->tid_data[tid].state;
1471
1472         if (mvmsta->reserved_queue == queue)
1473                 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1474         spin_unlock_bh(&mvmsta->lock);
1475
1476         if (!shared_queue) {
1477                 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1478                 if (ret)
1479                         goto out_err;
1480
1481                 /* If we need to re-enable aggregations... */
1482                 if (queue_state == IWL_AGG_ON) {
1483                         ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1484                         if (ret)
1485                                 goto out_err;
1486                 }
1487         } else {
1488                 /* Redirect queue, if needed */
1489                 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1490                                              wdg_timeout, false,
1491                                              iwl_mvm_txq_from_tid(sta, tid));
1492                 if (ret)
1493                         goto out_err;
1494         }
1495
1496         return 0;
1497
1498 out_err:
1499         queue_tmp = queue;
1500         iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1501
1502         return ret;
1503 }
1504
1505 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,
1506                              struct ieee80211_txq *txq)
1507 {
1508         struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1509         int ret = -EINVAL;
1510
1511         lockdep_assert_held(&mvm->mutex);
1512
1513         if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
1514             !txq->sta) {
1515                 return 0;
1516         }
1517
1518         if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {
1519                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1520                 ret = 0;
1521         }
1522
1523         local_bh_disable();
1524         spin_lock(&mvm->add_stream_lock);
1525         if (!list_empty(&mvmtxq->list))
1526                 list_del_init(&mvmtxq->list);
1527         spin_unlock(&mvm->add_stream_lock);
1528         local_bh_enable();
1529
1530         return ret;
1531 }
1532
1533 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1534 {
1535         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1536                                            add_stream_wk);
1537
1538         mutex_lock(&mvm->mutex);
1539
1540         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1541
1542         while (!list_empty(&mvm->add_stream_txqs)) {
1543                 struct iwl_mvm_txq *mvmtxq;
1544                 struct ieee80211_txq *txq;
1545                 u8 tid;
1546
1547                 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1548                                           struct iwl_mvm_txq, list);
1549
1550                 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1551                                    drv_priv);
1552                 tid = txq->tid;
1553                 if (tid == IEEE80211_NUM_TIDS)
1554                         tid = IWL_MAX_TID_COUNT;
1555
1556                 /*
1557                  * We can't really do much here, but if this fails we can't
1558                  * transmit anyway - so just don't transmit the frame etc.
1559                  * and let them back up ... we've tried our best to allocate
1560                  * a queue in the function itself.
1561                  */
1562                 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1563                         spin_lock_bh(&mvm->add_stream_lock);
1564                         list_del_init(&mvmtxq->list);
1565                         spin_unlock_bh(&mvm->add_stream_lock);
1566                         continue;
1567                 }
1568
1569                 /* now we're ready, any remaining races/concurrency will be
1570                  * handled in iwl_mvm_mac_itxq_xmit()
1571                  */
1572                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1573
1574                 local_bh_disable();
1575                 spin_lock(&mvm->add_stream_lock);
1576                 list_del_init(&mvmtxq->list);
1577                 spin_unlock(&mvm->add_stream_lock);
1578
1579                 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1580                 local_bh_enable();
1581         }
1582
1583         mutex_unlock(&mvm->mutex);
1584 }
1585
1586 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1587                                       struct ieee80211_sta *sta,
1588                                       enum nl80211_iftype vif_type)
1589 {
1590         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1591         int queue;
1592
1593         /* queue reserving is disabled on new TX path */
1594         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1595                 return 0;
1596
1597         /* run the general cleanup/unsharing of queues */
1598         iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);
1599
1600         /* Make sure we have free resources for this STA */
1601         if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1602             !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1603             (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1604              IWL_MVM_QUEUE_FREE))
1605                 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1606         else
1607                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1608                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1609                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1610         if (queue < 0) {
1611                 /* try again - this time kick out a queue if needed */
1612                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1613                 if (queue < 0) {
1614                         IWL_ERR(mvm, "No available queues for new station\n");
1615                         return -ENOSPC;
1616                 }
1617         }
1618         mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1619
1620         mvmsta->reserved_queue = queue;
1621
1622         IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1623                             queue, mvmsta->deflink.sta_id);
1624
1625         return 0;
1626 }
1627
1628 /*
1629  * In DQA mode, after a HW restart the queues should be allocated as before, in
1630  * order to avoid race conditions when there are shared queues. This function
1631  * does the re-mapping and queue allocation.
1632  *
1633  * Note that re-enabling aggregations isn't done in this function.
1634  */
1635 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1636                                           struct ieee80211_sta *sta)
1637 {
1638         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1639         unsigned int wdg =
1640                 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1641         int i;
1642         struct iwl_trans_txq_scd_cfg cfg = {
1643                 .sta_id = mvm_sta->deflink.sta_id,
1644                 .frame_limit = IWL_FRAME_LIMIT,
1645         };
1646
1647         /* Make sure reserved queue is still marked as such (if allocated) */
1648         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1649                 mvm->queue_info[mvm_sta->reserved_queue].status =
1650                         IWL_MVM_QUEUE_RESERVED;
1651
1652         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1653                 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1654                 int txq_id = tid_data->txq_id;
1655                 int ac;
1656
1657                 if (txq_id == IWL_MVM_INVALID_QUEUE)
1658                         continue;
1659
1660                 ac = tid_to_mac80211_ac[i];
1661
1662                 if (iwl_mvm_has_new_tx_api(mvm)) {
1663                         IWL_DEBUG_TX_QUEUES(mvm,
1664                                             "Re-mapping sta %d tid %d\n",
1665                                             mvm_sta->deflink.sta_id, i);
1666                         txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1667                                                          mvm_sta->deflink.sta_id,
1668                                                          i, wdg);
1669                         /*
1670                          * on failures, just set it to IWL_MVM_INVALID_QUEUE
1671                          * to try again later, we have no other good way of
1672                          * failing here
1673                          */
1674                         if (txq_id < 0)
1675                                 txq_id = IWL_MVM_INVALID_QUEUE;
1676                         tid_data->txq_id = txq_id;
1677
1678                         /*
1679                          * Since we don't set the seq number after reset, and HW
1680                          * sets it now, FW reset will cause the seq num to start
1681                          * at 0 again, so driver will need to update it
1682                          * internally as well, so it keeps in sync with real val
1683                          */
1684                         tid_data->seq_number = 0;
1685                 } else {
1686                         u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1687
1688                         cfg.tid = i;
1689                         cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1690                         cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1691                                          txq_id ==
1692                                          IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1693
1694                         IWL_DEBUG_TX_QUEUES(mvm,
1695                                             "Re-mapping sta %d tid %d to queue %d\n",
1696                                             mvm_sta->deflink.sta_id, i,
1697                                             txq_id);
1698
1699                         iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1700                         mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1701                 }
1702         }
1703 }
1704
1705 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1706                                       struct iwl_mvm_int_sta *sta,
1707                                       const u8 *addr,
1708                                       u16 mac_id, u16 color)
1709 {
1710         struct iwl_mvm_add_sta_cmd cmd;
1711         int ret;
1712         u32 status = ADD_STA_SUCCESS;
1713
1714         lockdep_assert_held(&mvm->mutex);
1715
1716         memset(&cmd, 0, sizeof(cmd));
1717         cmd.sta_id = sta->sta_id;
1718
1719         if (iwl_mvm_has_new_station_api(mvm->fw) &&
1720             sta->type == IWL_STA_AUX_ACTIVITY)
1721                 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1722         else
1723                 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1724                                                                      color));
1725
1726         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1727                 cmd.station_type = sta->type;
1728
1729         if (!iwl_mvm_has_new_tx_api(mvm))
1730                 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1731         cmd.tid_disable_tx = cpu_to_le16(0xffff);
1732
1733         if (addr)
1734                 memcpy(cmd.addr, addr, ETH_ALEN);
1735
1736         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1737                                           iwl_mvm_add_sta_cmd_size(mvm),
1738                                           &cmd, &status);
1739         if (ret)
1740                 return ret;
1741
1742         switch (status & IWL_ADD_STA_STATUS_MASK) {
1743         case ADD_STA_SUCCESS:
1744                 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1745                 return 0;
1746         default:
1747                 ret = -EIO;
1748                 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1749                         status);
1750                 break;
1751         }
1752         return ret;
1753 }
1754
1755 /* Initialize driver data of a new sta */
1756 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1757                      struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1758 {
1759         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1760         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1761         struct iwl_mvm_rxq_dup_data *dup_data;
1762         int i, ret = 0;
1763
1764         lockdep_assert_held(&mvm->mutex);
1765
1766         mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1767                                                       mvmvif->color);
1768         mvm_sta->vif = vif;
1769
1770         /* for MLD sta_id(s) should be allocated for each link before calling
1771          * this function
1772          */
1773         if (!mvm->mld_api_is_used) {
1774                 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
1775                         return -EINVAL;
1776
1777                 mvm_sta->deflink.sta_id = sta_id;
1778                 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1779
1780                 if (!mvm->trans->trans_cfg->gen2)
1781                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1782                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1783                 else
1784                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1785                                 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1786         }
1787
1788         mvm_sta->tt_tx_protection = false;
1789         mvm_sta->sta_type = sta_type;
1790
1791         mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1792
1793         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1794                 /*
1795                  * Mark all queues for this STA as unallocated and defer TX
1796                  * frames until the queue is allocated
1797                  */
1798                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1799         }
1800
1801         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1802                 struct iwl_mvm_txq *mvmtxq =
1803                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1804
1805                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1806                 INIT_LIST_HEAD(&mvmtxq->list);
1807                 atomic_set(&mvmtxq->tx_request, 0);
1808         }
1809
1810         if (iwl_mvm_has_new_rx_api(mvm)) {
1811                 int q;
1812
1813                 dup_data = kcalloc(mvm->trans->num_rx_queues,
1814                                    sizeof(*dup_data), GFP_KERNEL);
1815                 if (!dup_data)
1816                         return -ENOMEM;
1817                 /*
1818                  * Initialize all the last_seq values to 0xffff which can never
1819                  * compare equal to the frame's seq_ctrl in the check in
1820                  * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1821                  * number and fragmented packets don't reach that function.
1822                  *
1823                  * This thus allows receiving a packet with seqno 0 and the
1824                  * retry bit set as the very first packet on a new TID.
1825                  */
1826                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1827                         memset(dup_data[q].last_seq, 0xff,
1828                                sizeof(dup_data[q].last_seq));
1829                 mvm_sta->dup_data = dup_data;
1830         }
1831
1832         if (!iwl_mvm_has_new_tx_api(mvm)) {
1833                 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1834                                                  ieee80211_vif_type_p2p(vif));
1835                 if (ret)
1836                         return ret;
1837         }
1838
1839         /*
1840          * if rs is registered with mac80211, then "add station" will be handled
1841          * via the corresponding ops, otherwise need to notify rate scaling here
1842          */
1843         if (iwl_mvm_has_tlc_offload(mvm))
1844                 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1845         else
1846                 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1847
1848         iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1849
1850         return 0;
1851 }
1852
1853 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1854                     struct ieee80211_vif *vif,
1855                     struct ieee80211_sta *sta)
1856 {
1857         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1858         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1859         int ret, sta_id;
1860         bool sta_update = false;
1861         unsigned int sta_flags = 0;
1862
1863         lockdep_assert_held(&mvm->mutex);
1864
1865         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1866                 sta_id = iwl_mvm_find_free_sta_id(mvm,
1867                                                   ieee80211_vif_type_p2p(vif));
1868         else
1869                 sta_id = mvm_sta->deflink.sta_id;
1870
1871         if (sta_id == IWL_MVM_INVALID_STA)
1872                 return -ENOSPC;
1873
1874         spin_lock_init(&mvm_sta->lock);
1875
1876         /* if this is a HW restart re-alloc existing queues */
1877         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1878                 struct iwl_mvm_int_sta tmp_sta = {
1879                         .sta_id = sta_id,
1880                         .type = mvm_sta->sta_type,
1881                 };
1882
1883                 /* First add an empty station since allocating
1884                  * a queue requires a valid station
1885                  */
1886                 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1887                                                  mvmvif->id, mvmvif->color);
1888                 if (ret)
1889                         goto err;
1890
1891                 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1892                 sta_update = true;
1893                 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1894                 goto update_fw;
1895         }
1896
1897         ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1898                                sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1899         if (ret)
1900                 goto err;
1901
1902 update_fw:
1903         ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1904         if (ret)
1905                 goto err;
1906
1907         if (vif->type == NL80211_IFTYPE_STATION) {
1908                 if (!sta->tdls) {
1909                         WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA);
1910                         mvmvif->deflink.ap_sta_id = sta_id;
1911                 } else {
1912                         WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA);
1913                 }
1914         }
1915
1916         rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1917
1918         return 0;
1919
1920 err:
1921         return ret;
1922 }
1923
1924 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1925                       bool drain)
1926 {
1927         struct iwl_mvm_add_sta_cmd cmd = {};
1928         int ret;
1929         u32 status;
1930
1931         lockdep_assert_held(&mvm->mutex);
1932
1933         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1934         cmd.sta_id = mvmsta->deflink.sta_id;
1935         cmd.add_modify = STA_MODE_MODIFY;
1936         cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1937         cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1938
1939         status = ADD_STA_SUCCESS;
1940         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1941                                           iwl_mvm_add_sta_cmd_size(mvm),
1942                                           &cmd, &status);
1943         if (ret)
1944                 return ret;
1945
1946         switch (status & IWL_ADD_STA_STATUS_MASK) {
1947         case ADD_STA_SUCCESS:
1948                 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1949                                mvmsta->deflink.sta_id);
1950                 break;
1951         default:
1952                 ret = -EIO;
1953                 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1954                         mvmsta->deflink.sta_id);
1955                 break;
1956         }
1957
1958         return ret;
1959 }
1960
1961 /*
1962  * Remove a station from the FW table. Before sending the command to remove
1963  * the station validate that the station is indeed known to the driver (sanity
1964  * only).
1965  */
1966 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1967 {
1968         struct ieee80211_sta *sta;
1969         struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1970                 .sta_id = sta_id,
1971         };
1972         int ret;
1973
1974         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1975                                         lockdep_is_held(&mvm->mutex));
1976
1977         /* Note: internal stations are marked as error values */
1978         if (!sta) {
1979                 IWL_ERR(mvm, "Invalid station id\n");
1980                 return -EINVAL;
1981         }
1982
1983         ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1984                                    sizeof(rm_sta_cmd), &rm_sta_cmd);
1985         if (ret) {
1986                 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1987                 return ret;
1988         }
1989
1990         return 0;
1991 }
1992
1993 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1994                                        struct ieee80211_vif *vif,
1995                                        struct ieee80211_sta *sta)
1996 {
1997         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1998         int i;
1999
2000         lockdep_assert_held(&mvm->mutex);
2001
2002         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2003                 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
2004                         continue;
2005
2006                 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
2007                                     &mvm_sta->tid_data[i].txq_id, i);
2008                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
2009         }
2010
2011         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
2012                 struct iwl_mvm_txq *mvmtxq =
2013                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
2014
2015                 spin_lock_bh(&mvm->add_stream_lock);
2016                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
2017                 list_del_init(&mvmtxq->list);
2018                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
2019                 spin_unlock_bh(&mvm->add_stream_lock);
2020         }
2021 }
2022
2023 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
2024                                   struct iwl_mvm_sta *mvm_sta)
2025 {
2026         int i;
2027
2028         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2029                 u16 txq_id;
2030                 int ret;
2031
2032                 spin_lock_bh(&mvm_sta->lock);
2033                 txq_id = mvm_sta->tid_data[i].txq_id;
2034                 spin_unlock_bh(&mvm_sta->lock);
2035
2036                 if (txq_id == IWL_MVM_INVALID_QUEUE)
2037                         continue;
2038
2039                 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2040                 if (ret)
2041                         return ret;
2042         }
2043
2044         return 0;
2045 }
2046
2047 /* Execute the common part for both MLD and non-MLD modes.
2048  * Returns if we're done with removing the station, either
2049  * with error or success
2050  */
2051 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2052                      struct ieee80211_sta *sta,
2053                      struct ieee80211_link_sta *link_sta, int *ret)
2054 {
2055         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2056         struct iwl_mvm_vif_link_info *mvm_link =
2057                 mvmvif->link[link_sta->link_id];
2058         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2059         struct iwl_mvm_link_sta *mvm_link_sta;
2060         u8 sta_id;
2061
2062         lockdep_assert_held(&mvm->mutex);
2063
2064         mvm_link_sta =
2065                 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2066                                           lockdep_is_held(&mvm->mutex));
2067         sta_id = mvm_link_sta->sta_id;
2068
2069         /* If there is a TXQ still marked as reserved - free it */
2070         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2071                 u8 reserved_txq = mvm_sta->reserved_queue;
2072                 enum iwl_mvm_queue_status *status;
2073
2074                 /*
2075                  * If no traffic has gone through the reserved TXQ - it
2076                  * is still marked as IWL_MVM_QUEUE_RESERVED, and
2077                  * should be manually marked as free again
2078                  */
2079                 status = &mvm->queue_info[reserved_txq].status;
2080                 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2081                          (*status != IWL_MVM_QUEUE_FREE),
2082                          "sta_id %d reserved txq %d status %d",
2083                          sta_id, reserved_txq, *status)) {
2084                         *ret = -EINVAL;
2085                         return true;
2086                 }
2087
2088                 *status = IWL_MVM_QUEUE_FREE;
2089         }
2090
2091         if (vif->type == NL80211_IFTYPE_STATION &&
2092             mvm_link->ap_sta_id == sta_id) {
2093                 /* if associated - we can't remove the AP STA now */
2094                 if (vif->cfg.assoc)
2095                         return true;
2096
2097                 /* first remove remaining keys */
2098                 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);
2099
2100                 /* unassoc - go ahead - remove the AP STA now */
2101                 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA;
2102         }
2103
2104         /*
2105          * This shouldn't happen - the TDLS channel switch should be canceled
2106          * before the STA is removed.
2107          */
2108         if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2109                 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;
2110                 cancel_delayed_work(&mvm->tdls_cs.dwork);
2111         }
2112
2113         return false;
2114 }
2115
2116 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2117                    struct ieee80211_vif *vif,
2118                    struct ieee80211_sta *sta)
2119 {
2120         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2121         int ret;
2122
2123         lockdep_assert_held(&mvm->mutex);
2124
2125         ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2126         if (ret)
2127                 return ret;
2128
2129         /* flush its queues here since we are freeing mvm_sta */
2130         ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2131                                 mvm_sta->tfd_queue_msk);
2132         if (ret)
2133                 return ret;
2134         if (iwl_mvm_has_new_tx_api(mvm)) {
2135                 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2136         } else {
2137                 u32 q_mask = mvm_sta->tfd_queue_msk;
2138
2139                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2140                                                      q_mask);
2141         }
2142         if (ret)
2143                 return ret;
2144
2145         ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2146
2147         iwl_mvm_disable_sta_queues(mvm, vif, sta);
2148
2149         if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))
2150                 return ret;
2151
2152         ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2153         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2154
2155         return ret;
2156 }
2157
2158 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2159                       struct ieee80211_vif *vif,
2160                       u8 sta_id)
2161 {
2162         int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2163
2164         lockdep_assert_held(&mvm->mutex);
2165
2166         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2167         return ret;
2168 }
2169
2170 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2171                              struct iwl_mvm_int_sta *sta,
2172                              u32 qmask, enum nl80211_iftype iftype,
2173                              u8 type)
2174 {
2175         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2176             sta->sta_id == IWL_MVM_INVALID_STA) {
2177                 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2178                 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
2179                         return -ENOSPC;
2180         }
2181
2182         sta->tfd_queue_msk = qmask;
2183         sta->type = type;
2184
2185         /* put a non-NULL value so iterating over the stations won't stop */
2186         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2187         return 0;
2188 }
2189
2190 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2191 {
2192         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2193         memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2194         sta->sta_id = IWL_MVM_INVALID_STA;
2195 }
2196
2197 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2198                                           u8 sta_id, u8 fifo)
2199 {
2200         unsigned int wdg_timeout =
2201                 mvm->trans->trans_cfg->base_params->wd_timeout;
2202         struct iwl_trans_txq_scd_cfg cfg = {
2203                 .fifo = fifo,
2204                 .sta_id = sta_id,
2205                 .tid = IWL_MAX_TID_COUNT,
2206                 .aggregate = false,
2207                 .frame_limit = IWL_FRAME_LIMIT,
2208         };
2209
2210         WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2211
2212         iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2213 }
2214
2215 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2216 {
2217         unsigned int wdg_timeout =
2218                 mvm->trans->trans_cfg->base_params->wd_timeout;
2219
2220         WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2221
2222         return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2223                                        wdg_timeout);
2224 }
2225
2226 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2227                                           int maccolor, u8 *addr,
2228                                           struct iwl_mvm_int_sta *sta,
2229                                           u16 *queue, int fifo)
2230 {
2231         int ret;
2232
2233         /* Map queue to fifo - needs to happen before adding station */
2234         if (!iwl_mvm_has_new_tx_api(mvm))
2235                 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2236
2237         ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2238         if (ret) {
2239                 if (!iwl_mvm_has_new_tx_api(mvm))
2240                         iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2241                                             IWL_MAX_TID_COUNT);
2242                 return ret;
2243         }
2244
2245         /*
2246          * For 22000 firmware and on we cannot add queue to a station unknown
2247          * to firmware so enable queue here - after the station was added
2248          */
2249         if (iwl_mvm_has_new_tx_api(mvm)) {
2250                 int txq;
2251
2252                 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2253                 if (txq < 0) {
2254                         iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2255                         return txq;
2256                 }
2257
2258                 *queue = txq;
2259         }
2260
2261         return 0;
2262 }
2263
2264 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2265 {
2266         int ret;
2267         u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2268                 BIT(mvm->aux_queue);
2269
2270         lockdep_assert_held(&mvm->mutex);
2271
2272         /* Allocate aux station and assign to it the aux queue */
2273         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2274                                        NL80211_IFTYPE_UNSPECIFIED,
2275                                        IWL_STA_AUX_ACTIVITY);
2276         if (ret)
2277                 return ret;
2278
2279         /*
2280          * In CDB NICs we need to specify which lmac to use for aux activity
2281          * using the mac_id argument place to send lmac_id to the function
2282          */
2283         ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2284                                              &mvm->aux_sta, &mvm->aux_queue,
2285                                              IWL_MVM_TX_FIFO_MCAST);
2286         if (ret) {
2287                 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2288                 return ret;
2289         }
2290
2291         return 0;
2292 }
2293
2294 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2295 {
2296         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2297
2298         lockdep_assert_held(&mvm->mutex);
2299
2300         return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2301                                               NULL, &mvm->snif_sta,
2302                                               &mvm->snif_queue,
2303                                               IWL_MVM_TX_FIFO_BE);
2304 }
2305
2306 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2307 {
2308         int ret;
2309
2310         lockdep_assert_held(&mvm->mutex);
2311
2312         if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA))
2313                 return -EINVAL;
2314
2315         iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2316                             &mvm->snif_queue, IWL_MAX_TID_COUNT);
2317         ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2318         if (ret)
2319                 IWL_WARN(mvm, "Failed sending remove station\n");
2320
2321         return ret;
2322 }
2323
2324 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2325 {
2326         int ret;
2327
2328         lockdep_assert_held(&mvm->mutex);
2329
2330         if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA))
2331                 return -EINVAL;
2332
2333         iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2334                             &mvm->aux_queue, IWL_MAX_TID_COUNT);
2335         ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2336         if (ret)
2337                 IWL_WARN(mvm, "Failed sending remove station\n");
2338         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2339
2340         return ret;
2341 }
2342
2343 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2344 {
2345         iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2346 }
2347
2348 /*
2349  * Send the add station command for the vif's broadcast station.
2350  * Assumes that the station was already allocated.
2351  *
2352  * @mvm: the mvm component
2353  * @vif: the interface to which the broadcast station is added
2354  * @bsta: the broadcast station to add.
2355  */
2356 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2357 {
2358         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2359         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2360         static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2361         const u8 *baddr = _baddr;
2362         int queue;
2363         int ret;
2364         unsigned int wdg_timeout =
2365                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2366         struct iwl_trans_txq_scd_cfg cfg = {
2367                 .fifo = IWL_MVM_TX_FIFO_VO,
2368                 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2369                 .tid = IWL_MAX_TID_COUNT,
2370                 .aggregate = false,
2371                 .frame_limit = IWL_FRAME_LIMIT,
2372         };
2373
2374         lockdep_assert_held(&mvm->mutex);
2375
2376         if (!iwl_mvm_has_new_tx_api(mvm)) {
2377                 if (vif->type == NL80211_IFTYPE_AP ||
2378                     vif->type == NL80211_IFTYPE_ADHOC) {
2379                         queue = mvm->probe_queue;
2380                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2381                         queue = mvm->p2p_dev_queue;
2382                 } else {
2383                         WARN(1, "Missing required TXQ for adding bcast STA\n");
2384                         return -EINVAL;
2385                 }
2386
2387                 bsta->tfd_queue_msk |= BIT(queue);
2388
2389                 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2390         }
2391
2392         if (vif->type == NL80211_IFTYPE_ADHOC)
2393                 baddr = vif->bss_conf.bssid;
2394
2395         if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))
2396                 return -ENOSPC;
2397
2398         ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2399                                          mvmvif->id, mvmvif->color);
2400         if (ret)
2401                 return ret;
2402
2403         /*
2404          * For 22000 firmware and on we cannot add queue to a station unknown
2405          * to firmware so enable queue here - after the station was added
2406          */
2407         if (iwl_mvm_has_new_tx_api(mvm)) {
2408                 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2409                                                 IWL_MAX_TID_COUNT,
2410                                                 wdg_timeout);
2411                 if (queue < 0) {
2412                         iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2413                         return queue;
2414                 }
2415
2416                 if (vif->type == NL80211_IFTYPE_AP ||
2417                     vif->type == NL80211_IFTYPE_ADHOC) {
2418                         /* for queue management */
2419                         mvm->probe_queue = queue;
2420                         /* for use in TX */
2421                         mvmvif->deflink.mgmt_queue = queue;
2422                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2423                         mvm->p2p_dev_queue = queue;
2424                 }
2425         } else if (vif->type == NL80211_IFTYPE_AP ||
2426                    vif->type == NL80211_IFTYPE_ADHOC) {
2427                 /* set it for use in TX */
2428                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2429         }
2430
2431         return 0;
2432 }
2433
2434 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2435                                    struct ieee80211_vif *vif)
2436 {
2437         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2438         u16 *queueptr, queue;
2439
2440         lockdep_assert_held(&mvm->mutex);
2441
2442         iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2443                           mvmvif->deflink.bcast_sta.tfd_queue_msk);
2444
2445         switch (vif->type) {
2446         case NL80211_IFTYPE_AP:
2447         case NL80211_IFTYPE_ADHOC:
2448                 queueptr = &mvm->probe_queue;
2449                 break;
2450         case NL80211_IFTYPE_P2P_DEVICE:
2451                 queueptr = &mvm->p2p_dev_queue;
2452                 break;
2453         default:
2454                 WARN(1, "Can't free bcast queue on vif type %d\n",
2455                      vif->type);
2456                 return;
2457         }
2458
2459         queue = *queueptr;
2460         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2461                             queueptr, IWL_MAX_TID_COUNT);
2462
2463         if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2464                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2465
2466         if (iwl_mvm_has_new_tx_api(mvm))
2467                 return;
2468
2469         WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2470         mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2471 }
2472
2473 /* Send the FW a request to remove the station from it's internal data
2474  * structures, but DO NOT remove the entry from the local data structures. */
2475 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2476 {
2477         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2478         int ret;
2479
2480         lockdep_assert_held(&mvm->mutex);
2481
2482         iwl_mvm_free_bcast_sta_queues(mvm, vif);
2483
2484         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2485         if (ret)
2486                 IWL_WARN(mvm, "Failed sending remove station\n");
2487         return ret;
2488 }
2489
2490 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2491 {
2492         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2493
2494         lockdep_assert_held(&mvm->mutex);
2495
2496         return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2497                                         ieee80211_vif_type_p2p(vif),
2498                                         IWL_STA_GENERAL_PURPOSE);
2499 }
2500
2501 /* Allocate a new station entry for the broadcast station to the given vif,
2502  * and send it to the FW.
2503  * Note that each P2P mac should have its own broadcast station.
2504  *
2505  * @mvm: the mvm component
2506  * @vif: the interface to which the broadcast station is added
2507  * @bsta: the broadcast station to add. */
2508 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2509 {
2510         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2511         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2512         int ret;
2513
2514         lockdep_assert_held(&mvm->mutex);
2515
2516         ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2517         if (ret)
2518                 return ret;
2519
2520         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2521
2522         if (ret)
2523                 iwl_mvm_dealloc_int_sta(mvm, bsta);
2524
2525         return ret;
2526 }
2527
2528 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2529 {
2530         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2531
2532         iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2533 }
2534
2535 /*
2536  * Send the FW a request to remove the station from it's internal data
2537  * structures, and in addition remove it from the local data structure.
2538  */
2539 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2540 {
2541         int ret;
2542
2543         lockdep_assert_held(&mvm->mutex);
2544
2545         ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2546
2547         iwl_mvm_dealloc_bcast_sta(mvm, vif);
2548
2549         return ret;
2550 }
2551
2552 /*
2553  * Allocate a new station entry for the multicast station to the given vif,
2554  * and send it to the FW.
2555  * Note that each AP/GO mac should have its own multicast station.
2556  *
2557  * @mvm: the mvm component
2558  * @vif: the interface to which the multicast station is added
2559  */
2560 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2561 {
2562         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2563         struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2564         static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2565         const u8 *maddr = _maddr;
2566         struct iwl_trans_txq_scd_cfg cfg = {
2567                 .fifo = vif->type == NL80211_IFTYPE_AP ?
2568                         IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2569                 .sta_id = msta->sta_id,
2570                 .tid = 0,
2571                 .aggregate = false,
2572                 .frame_limit = IWL_FRAME_LIMIT,
2573         };
2574         unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2575         int ret;
2576
2577         lockdep_assert_held(&mvm->mutex);
2578
2579         if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2580                     vif->type != NL80211_IFTYPE_ADHOC))
2581                 return -EOPNOTSUPP;
2582
2583         /*
2584          * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2585          * invalid, so make sure we use the queue we want.
2586          * Note that this is done here as we want to avoid making DQA
2587          * changes in mac80211 layer.
2588          */
2589         if (vif->type == NL80211_IFTYPE_ADHOC)
2590                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2591
2592         /*
2593          * While in previous FWs we had to exclude cab queue from TFD queue
2594          * mask, now it is needed as any other queue.
2595          */
2596         if (!iwl_mvm_has_new_tx_api(mvm) &&
2597             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2598                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2599                                    &cfg,
2600                                    timeout);
2601                 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2602         }
2603         ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2604                                          mvmvif->id, mvmvif->color);
2605         if (ret)
2606                 goto err;
2607
2608         /*
2609          * Enable cab queue after the ADD_STA command is sent.
2610          * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2611          * command with unknown station id, and for FW that doesn't support
2612          * station API since the cab queue is not included in the
2613          * tfd_queue_mask.
2614          */
2615         if (iwl_mvm_has_new_tx_api(mvm)) {
2616                 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2617                                                     0, timeout);
2618                 if (queue < 0) {
2619                         ret = queue;
2620                         goto err;
2621                 }
2622                 mvmvif->deflink.cab_queue = queue;
2623         } else if (!fw_has_api(&mvm->fw->ucode_capa,
2624                                IWL_UCODE_TLV_API_STA_TYPE))
2625                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2626                                    &cfg,
2627                                    timeout);
2628
2629         return 0;
2630 err:
2631         iwl_mvm_dealloc_int_sta(mvm, msta);
2632         return ret;
2633 }
2634
2635 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2636                                     struct ieee80211_key_conf *keyconf,
2637                                     bool mcast)
2638 {
2639         union {
2640                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2641                 struct iwl_mvm_add_sta_key_cmd cmd;
2642         } u = {};
2643         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2644                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2645         __le16 key_flags;
2646         int ret, size;
2647         u32 status;
2648
2649         /* This is a valid situation for GTK removal */
2650         if (sta_id == IWL_MVM_INVALID_STA)
2651                 return 0;
2652
2653         key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2654                                  STA_KEY_FLG_KEYID_MSK);
2655         key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2656         key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2657
2658         if (mcast)
2659                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2660
2661         /*
2662          * The fields assigned here are in the same location at the start
2663          * of the command, so we can do this union trick.
2664          */
2665         u.cmd.common.key_flags = key_flags;
2666         u.cmd.common.key_offset = keyconf->hw_key_idx;
2667         u.cmd.common.sta_id = sta_id;
2668
2669         size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2670
2671         status = ADD_STA_SUCCESS;
2672         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2673                                           &status);
2674
2675         switch (status) {
2676         case ADD_STA_SUCCESS:
2677                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2678                 break;
2679         default:
2680                 ret = -EIO;
2681                 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2682                 break;
2683         }
2684
2685         return ret;
2686 }
2687
2688 /*
2689  * Send the FW a request to remove the station from it's internal data
2690  * structures, and in addition remove it from the local data structure.
2691  */
2692 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2693 {
2694         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2695         int ret;
2696
2697         lockdep_assert_held(&mvm->mutex);
2698
2699         iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2700                           mvmvif->deflink.mcast_sta.tfd_queue_msk);
2701
2702         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2703                             &mvmvif->deflink.cab_queue, 0);
2704
2705         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2706         if (ret)
2707                 IWL_WARN(mvm, "Failed sending remove station\n");
2708
2709         return ret;
2710 }
2711
2712 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2713 {
2714         struct iwl_mvm_delba_data notif = {
2715                 .baid = baid,
2716         };
2717
2718         iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2719                                         &notif, sizeof(notif));
2720 };
2721
2722 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2723                                  struct iwl_mvm_baid_data *data)
2724 {
2725         int i;
2726
2727         iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2728
2729         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2730                 int j;
2731                 struct iwl_mvm_reorder_buffer *reorder_buf =
2732                         &data->reorder_buf[i];
2733                 struct iwl_mvm_reorder_buf_entry *entries =
2734                         &data->entries[i * data->entries_per_queue];
2735
2736                 spin_lock_bh(&reorder_buf->lock);
2737                 if (likely(!reorder_buf->num_stored)) {
2738                         spin_unlock_bh(&reorder_buf->lock);
2739                         continue;
2740                 }
2741
2742                 /*
2743                  * This shouldn't happen in regular DELBA since the internal
2744                  * delBA notification should trigger a release of all frames in
2745                  * the reorder buffer.
2746                  */
2747                 WARN_ON(1);
2748
2749                 for (j = 0; j < reorder_buf->buf_size; j++)
2750                         __skb_queue_purge(&entries[j].frames);
2751
2752                 spin_unlock_bh(&reorder_buf->lock);
2753         }
2754 }
2755
2756 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2757                                         struct iwl_mvm_baid_data *data,
2758                                         u16 ssn, u16 buf_size)
2759 {
2760         int i;
2761
2762         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2763                 struct iwl_mvm_reorder_buffer *reorder_buf =
2764                         &data->reorder_buf[i];
2765                 struct iwl_mvm_reorder_buf_entry *entries =
2766                         &data->entries[i * data->entries_per_queue];
2767                 int j;
2768
2769                 reorder_buf->num_stored = 0;
2770                 reorder_buf->head_sn = ssn;
2771                 reorder_buf->buf_size = buf_size;
2772                 spin_lock_init(&reorder_buf->lock);
2773                 reorder_buf->mvm = mvm;
2774                 reorder_buf->queue = i;
2775                 reorder_buf->valid = false;
2776                 for (j = 0; j < reorder_buf->buf_size; j++)
2777                         __skb_queue_head_init(&entries[j].frames);
2778         }
2779 }
2780
2781 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2782                                   struct ieee80211_sta *sta,
2783                                   bool start, int tid, u16 ssn,
2784                                   u16 buf_size)
2785 {
2786         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2787         struct iwl_mvm_add_sta_cmd cmd = {
2788                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2789                 .sta_id = mvm_sta->deflink.sta_id,
2790                 .add_modify = STA_MODE_MODIFY,
2791         };
2792         u32 status;
2793         int ret;
2794
2795         if (start) {
2796                 cmd.add_immediate_ba_tid = tid;
2797                 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2798                 cmd.rx_ba_window = cpu_to_le16(buf_size);
2799                 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2800         } else {
2801                 cmd.remove_immediate_ba_tid = tid;
2802                 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2803         }
2804
2805         status = ADD_STA_SUCCESS;
2806         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2807                                           iwl_mvm_add_sta_cmd_size(mvm),
2808                                           &cmd, &status);
2809         if (ret)
2810                 return ret;
2811
2812         switch (status & IWL_ADD_STA_STATUS_MASK) {
2813         case ADD_STA_SUCCESS:
2814                 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2815                              start ? "start" : "stopp");
2816                 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2817                             !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2818                         return -EINVAL;
2819                 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2820         case ADD_STA_IMMEDIATE_BA_FAILURE:
2821                 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2822                 return -ENOSPC;
2823         default:
2824                 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2825                         start ? "start" : "stopp", status);
2826                 return -EIO;
2827         }
2828 }
2829
2830 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2831                                   struct ieee80211_sta *sta,
2832                                   bool start, int tid, u16 ssn,
2833                                   u16 buf_size, int baid)
2834 {
2835         struct iwl_rx_baid_cfg_cmd cmd = {
2836                 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2837                                   cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2838         };
2839         u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD);
2840         int ret;
2841
2842         BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2843
2844         if (start) {
2845                 cmd.alloc.sta_id_mask =
2846                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2847                 cmd.alloc.tid = tid;
2848                 cmd.alloc.ssn = cpu_to_le16(ssn);
2849                 cmd.alloc.win_size = cpu_to_le16(buf_size);
2850                 baid = -EIO;
2851         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) {
2852                 cmd.remove_v1.baid = cpu_to_le32(baid);
2853                 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2854         } else {
2855                 cmd.remove.sta_id_mask =
2856                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2857                 cmd.remove.tid = cpu_to_le32(tid);
2858         }
2859
2860         ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd),
2861                                           &cmd, &baid);
2862         if (ret)
2863                 return ret;
2864
2865         if (!start) {
2866                 /* ignore firmware baid on remove */
2867                 baid = 0;
2868         }
2869
2870         IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2871                      start ? "start" : "stopp");
2872
2873         if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2874                 return -EINVAL;
2875
2876         return baid;
2877 }
2878
2879 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2880                               bool start, int tid, u16 ssn, u16 buf_size,
2881                               int baid)
2882 {
2883         if (fw_has_capa(&mvm->fw->ucode_capa,
2884                         IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2885                 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2886                                               tid, ssn, buf_size, baid);
2887
2888         return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2889                                       tid, ssn, buf_size);
2890 }
2891
2892 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2893                        int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2894 {
2895         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2896         struct iwl_mvm_baid_data *baid_data = NULL;
2897         int ret, baid;
2898         u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2899                                                                IWL_MAX_BAID_OLD;
2900
2901         lockdep_assert_held(&mvm->mutex);
2902
2903         if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2904                 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2905                 return -ENOSPC;
2906         }
2907
2908         if (iwl_mvm_has_new_rx_api(mvm) && start) {
2909                 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2910
2911                 /* sparse doesn't like the __align() so don't check */
2912 #ifndef __CHECKER__
2913                 /*
2914                  * The division below will be OK if either the cache line size
2915                  * can be divided by the entry size (ALIGN will round up) or if
2916                  * if the entry size can be divided by the cache line size, in
2917                  * which case the ALIGN() will do nothing.
2918                  */
2919                 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2920                              sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2921 #endif
2922
2923                 /*
2924                  * Upward align the reorder buffer size to fill an entire cache
2925                  * line for each queue, to avoid sharing cache lines between
2926                  * different queues.
2927                  */
2928                 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2929
2930                 /*
2931                  * Allocate here so if allocation fails we can bail out early
2932                  * before starting the BA session in the firmware
2933                  */
2934                 baid_data = kzalloc(sizeof(*baid_data) +
2935                                     mvm->trans->num_rx_queues *
2936                                     reorder_buf_size,
2937                                     GFP_KERNEL);
2938                 if (!baid_data)
2939                         return -ENOMEM;
2940
2941                 /*
2942                  * This division is why we need the above BUILD_BUG_ON(),
2943                  * if that doesn't hold then this will not be right.
2944                  */
2945                 baid_data->entries_per_queue =
2946                         reorder_buf_size / sizeof(baid_data->entries[0]);
2947         }
2948
2949         if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2950                 baid = mvm_sta->tid_to_baid[tid];
2951         } else {
2952                 /* we don't really need it in this case */
2953                 baid = -1;
2954         }
2955
2956         /* Don't send command to remove (start=0) BAID during restart */
2957         if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2958                 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2959                                           baid);
2960
2961         if (baid < 0) {
2962                 ret = baid;
2963                 goto out_free;
2964         }
2965
2966         if (start) {
2967                 mvm->rx_ba_sessions++;
2968
2969                 if (!iwl_mvm_has_new_rx_api(mvm))
2970                         return 0;
2971
2972                 baid_data->baid = baid;
2973                 baid_data->timeout = timeout;
2974                 baid_data->last_rx = jiffies;
2975                 baid_data->rcu_ptr = &mvm->baid_map[baid];
2976                 timer_setup(&baid_data->session_timer,
2977                             iwl_mvm_rx_agg_session_expired, 0);
2978                 baid_data->mvm = mvm;
2979                 baid_data->tid = tid;
2980                 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2981
2982                 mvm_sta->tid_to_baid[tid] = baid;
2983                 if (timeout)
2984                         mod_timer(&baid_data->session_timer,
2985                                   TU_TO_EXP_TIME(timeout * 2));
2986
2987                 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size);
2988                 /*
2989                  * protect the BA data with RCU to cover a case where our
2990                  * internal RX sync mechanism will timeout (not that it's
2991                  * supposed to happen) and we will free the session data while
2992                  * RX is being processed in parallel
2993                  */
2994                 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2995                              mvm_sta->deflink.sta_id, tid, baid);
2996                 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2997                 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2998         } else  {
2999                 baid = mvm_sta->tid_to_baid[tid];
3000
3001                 if (mvm->rx_ba_sessions > 0)
3002                         /* check that restart flow didn't zero the counter */
3003                         mvm->rx_ba_sessions--;
3004                 if (!iwl_mvm_has_new_rx_api(mvm))
3005                         return 0;
3006
3007                 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
3008                         return -EINVAL;
3009
3010                 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
3011                 if (WARN_ON(!baid_data))
3012                         return -EINVAL;
3013
3014                 /* synchronize all rx queues so we can safely delete */
3015                 iwl_mvm_free_reorder(mvm, baid_data);
3016                 timer_shutdown_sync(&baid_data->session_timer);
3017                 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
3018                 kfree_rcu(baid_data, rcu_head);
3019                 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3020         }
3021         return 0;
3022
3023 out_free:
3024         kfree(baid_data);
3025         return ret;
3026 }
3027
3028 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3029                        int tid, u8 queue, bool start)
3030 {
3031         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3032         struct iwl_mvm_add_sta_cmd cmd = {};
3033         int ret;
3034         u32 status;
3035
3036         lockdep_assert_held(&mvm->mutex);
3037
3038         if (start) {
3039                 mvm_sta->tfd_queue_msk |= BIT(queue);
3040                 mvm_sta->tid_disable_agg &= ~BIT(tid);
3041         } else {
3042                 /* In DQA-mode the queue isn't removed on agg termination */
3043                 mvm_sta->tid_disable_agg |= BIT(tid);
3044         }
3045
3046         cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3047         cmd.sta_id = mvm_sta->deflink.sta_id;
3048         cmd.add_modify = STA_MODE_MODIFY;
3049         if (!iwl_mvm_has_new_tx_api(mvm))
3050                 cmd.modify_mask = STA_MODIFY_QUEUES;
3051         cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3052         cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3053         cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3054
3055         status = ADD_STA_SUCCESS;
3056         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3057                                           iwl_mvm_add_sta_cmd_size(mvm),
3058                                           &cmd, &status);
3059         if (ret)
3060                 return ret;
3061
3062         switch (status & IWL_ADD_STA_STATUS_MASK) {
3063         case ADD_STA_SUCCESS:
3064                 break;
3065         default:
3066                 ret = -EIO;
3067                 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3068                         start ? "start" : "stopp", status);
3069                 break;
3070         }
3071
3072         return ret;
3073 }
3074
3075 const u8 tid_to_mac80211_ac[] = {
3076         IEEE80211_AC_BE,
3077         IEEE80211_AC_BK,
3078         IEEE80211_AC_BK,
3079         IEEE80211_AC_BE,
3080         IEEE80211_AC_VI,
3081         IEEE80211_AC_VI,
3082         IEEE80211_AC_VO,
3083         IEEE80211_AC_VO,
3084         IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3085 };
3086
3087 static const u8 tid_to_ucode_ac[] = {
3088         AC_BE,
3089         AC_BK,
3090         AC_BK,
3091         AC_BE,
3092         AC_VI,
3093         AC_VI,
3094         AC_VO,
3095         AC_VO,
3096 };
3097
3098 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3099                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3100 {
3101         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3102         struct iwl_mvm_tid_data *tid_data;
3103         u16 normalized_ssn;
3104         u16 txq_id;
3105         int ret;
3106
3107         if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3108                 return -EINVAL;
3109
3110         if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3111             mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3112                 IWL_ERR(mvm,
3113                         "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3114                         mvmsta->tid_data[tid].state);
3115                 return -ENXIO;
3116         }
3117
3118         lockdep_assert_held(&mvm->mutex);
3119
3120         if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3121             iwl_mvm_has_new_tx_api(mvm)) {
3122                 u8 ac = tid_to_mac80211_ac[tid];
3123
3124                 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3125                 if (ret)
3126                         return ret;
3127         }
3128
3129         spin_lock_bh(&mvmsta->lock);
3130
3131         /*
3132          * Note the possible cases:
3133          *  1. An enabled TXQ - TXQ needs to become agg'ed
3134          *  2. The TXQ hasn't yet been enabled, so find a free one and mark
3135          *      it as reserved
3136          */
3137         txq_id = mvmsta->tid_data[tid].txq_id;
3138         if (txq_id == IWL_MVM_INVALID_QUEUE) {
3139                 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3140                                               IWL_MVM_DQA_MIN_DATA_QUEUE,
3141                                               IWL_MVM_DQA_MAX_DATA_QUEUE);
3142                 if (ret < 0) {
3143                         IWL_ERR(mvm, "Failed to allocate agg queue\n");
3144                         goto out;
3145                 }
3146
3147                 txq_id = ret;
3148
3149                 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3150                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3151         } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3152                 ret = -ENXIO;
3153                 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3154                         tid, IWL_MAX_HW_QUEUES - 1);
3155                 goto out;
3156
3157         } else if (unlikely(mvm->queue_info[txq_id].status ==
3158                             IWL_MVM_QUEUE_SHARED)) {
3159                 ret = -ENXIO;
3160                 IWL_DEBUG_TX_QUEUES(mvm,
3161                                     "Can't start tid %d agg on shared queue!\n",
3162                                     tid);
3163                 goto out;
3164         }
3165
3166         IWL_DEBUG_TX_QUEUES(mvm,
3167                             "AGG for tid %d will be on queue #%d\n",
3168                             tid, txq_id);
3169
3170         tid_data = &mvmsta->tid_data[tid];
3171         tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3172         tid_data->txq_id = txq_id;
3173         *ssn = tid_data->ssn;
3174
3175         IWL_DEBUG_TX_QUEUES(mvm,
3176                             "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3177                             mvmsta->deflink.sta_id, tid, txq_id,
3178                             tid_data->ssn,
3179                             tid_data->next_reclaimed);
3180
3181         /*
3182          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3183          * to align the wrap around of ssn so we compare relevant values.
3184          */
3185         normalized_ssn = tid_data->ssn;
3186         if (mvm->trans->trans_cfg->gen2)
3187                 normalized_ssn &= 0xff;
3188
3189         if (normalized_ssn == tid_data->next_reclaimed) {
3190                 tid_data->state = IWL_AGG_STARTING;
3191                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3192         } else {
3193                 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3194                 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3195         }
3196
3197 out:
3198         spin_unlock_bh(&mvmsta->lock);
3199
3200         return ret;
3201 }
3202
3203 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3204                             struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3205                             bool amsdu)
3206 {
3207         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3208         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3209         unsigned int wdg_timeout =
3210                 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
3211         int queue, ret;
3212         bool alloc_queue = true;
3213         enum iwl_mvm_queue_status queue_status;
3214         u16 ssn;
3215
3216         struct iwl_trans_txq_scd_cfg cfg = {
3217                 .sta_id = mvmsta->deflink.sta_id,
3218                 .tid = tid,
3219                 .frame_limit = buf_size,
3220                 .aggregate = true,
3221         };
3222
3223         /*
3224          * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3225          * manager, so this function should never be called in this case.
3226          */
3227         if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3228                 return -EINVAL;
3229
3230         BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3231                      != IWL_MAX_TID_COUNT);
3232
3233         spin_lock_bh(&mvmsta->lock);
3234         ssn = tid_data->ssn;
3235         queue = tid_data->txq_id;
3236         tid_data->state = IWL_AGG_ON;
3237         mvmsta->agg_tids |= BIT(tid);
3238         tid_data->ssn = 0xffff;
3239         tid_data->amsdu_in_ampdu_allowed = amsdu;
3240         spin_unlock_bh(&mvmsta->lock);
3241
3242         if (iwl_mvm_has_new_tx_api(mvm)) {
3243                 /*
3244                  * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3245                  * would have failed, so if we are here there is no need to
3246                  * allocate a queue.
3247                  * However, if aggregation size is different than the default
3248                  * size, the scheduler should be reconfigured.
3249                  * We cannot do this with the new TX API, so return unsupported
3250                  * for now, until it will be offloaded to firmware..
3251                  * Note that if SCD default value changes - this condition
3252                  * should be updated as well.
3253                  */
3254                 if (buf_size < IWL_FRAME_LIMIT)
3255                         return -EOPNOTSUPP;
3256
3257                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3258                 if (ret)
3259                         return -EIO;
3260                 goto out;
3261         }
3262
3263         cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3264
3265         queue_status = mvm->queue_info[queue].status;
3266
3267         /* Maybe there is no need to even alloc a queue... */
3268         if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3269                 alloc_queue = false;
3270
3271         /*
3272          * Only reconfig the SCD for the queue if the window size has
3273          * changed from current (become smaller)
3274          */
3275         if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3276                 /*
3277                  * If reconfiguring an existing queue, it first must be
3278                  * drained
3279                  */
3280                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3281                                                      BIT(queue));
3282                 if (ret) {
3283                         IWL_ERR(mvm,
3284                                 "Error draining queue before reconfig\n");
3285                         return ret;
3286                 }
3287
3288                 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3289                                            mvmsta->deflink.sta_id, tid,
3290                                            buf_size, ssn);
3291                 if (ret) {
3292                         IWL_ERR(mvm,
3293                                 "Error reconfiguring TXQ #%d\n", queue);
3294                         return ret;
3295                 }
3296         }
3297
3298         if (alloc_queue)
3299                 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3300                                    &cfg, wdg_timeout);
3301
3302         /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3303         if (queue_status != IWL_MVM_QUEUE_SHARED) {
3304                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3305                 if (ret)
3306                         return -EIO;
3307         }
3308
3309         /* No need to mark as reserved */
3310         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3311
3312 out:
3313         /*
3314          * Even though in theory the peer could have different
3315          * aggregation reorder buffer sizes for different sessions,
3316          * our ucode doesn't allow for that and has a global limit
3317          * for each station. Therefore, use the minimum of all the
3318          * aggregation sessions and our default value.
3319          */
3320         mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3321                 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3322                     buf_size);
3323         mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3324                 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3325
3326         IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3327                      sta->addr, tid);
3328
3329         return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3330 }
3331
3332 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3333                                         struct iwl_mvm_sta *mvmsta,
3334                                         struct iwl_mvm_tid_data *tid_data)
3335 {
3336         u16 txq_id = tid_data->txq_id;
3337
3338         lockdep_assert_held(&mvm->mutex);
3339
3340         if (iwl_mvm_has_new_tx_api(mvm))
3341                 return;
3342
3343         /*
3344          * The TXQ is marked as reserved only if no traffic came through yet
3345          * This means no traffic has been sent on this TID (agg'd or not), so
3346          * we no longer have use for the queue. Since it hasn't even been
3347          * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3348          * free.
3349          */
3350         if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3351                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3352                 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3353         }
3354 }
3355
3356 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3357                             struct ieee80211_sta *sta, u16 tid)
3358 {
3359         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3360         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3361         u16 txq_id;
3362         int err;
3363
3364         /*
3365          * If mac80211 is cleaning its state, then say that we finished since
3366          * our state has been cleared anyway.
3367          */
3368         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3369                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3370                 return 0;
3371         }
3372
3373         spin_lock_bh(&mvmsta->lock);
3374
3375         txq_id = tid_data->txq_id;
3376
3377         IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3378                             mvmsta->deflink.sta_id, tid, txq_id,
3379                             tid_data->state);
3380
3381         mvmsta->agg_tids &= ~BIT(tid);
3382
3383         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3384
3385         switch (tid_data->state) {
3386         case IWL_AGG_ON:
3387                 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3388
3389                 IWL_DEBUG_TX_QUEUES(mvm,
3390                                     "ssn = %d, next_recl = %d\n",
3391                                     tid_data->ssn, tid_data->next_reclaimed);
3392
3393                 tid_data->ssn = 0xffff;
3394                 tid_data->state = IWL_AGG_OFF;
3395                 spin_unlock_bh(&mvmsta->lock);
3396
3397                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3398
3399                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3400                 return 0;
3401         case IWL_AGG_STARTING:
3402         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3403                 /*
3404                  * The agg session has been stopped before it was set up. This
3405                  * can happen when the AddBA timer times out for example.
3406                  */
3407
3408                 /* No barriers since we are under mutex */
3409                 lockdep_assert_held(&mvm->mutex);
3410
3411                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3412                 tid_data->state = IWL_AGG_OFF;
3413                 err = 0;
3414                 break;
3415         default:
3416                 IWL_ERR(mvm,
3417                         "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3418                         mvmsta->deflink.sta_id, tid, tid_data->state);
3419                 IWL_ERR(mvm,
3420                         "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3421                 err = -EINVAL;
3422         }
3423
3424         spin_unlock_bh(&mvmsta->lock);
3425
3426         return err;
3427 }
3428
3429 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3430                             struct ieee80211_sta *sta, u16 tid)
3431 {
3432         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3433         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3434         u16 txq_id;
3435         enum iwl_mvm_agg_state old_state;
3436
3437         /*
3438          * First set the agg state to OFF to avoid calling
3439          * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3440          */
3441         spin_lock_bh(&mvmsta->lock);
3442         txq_id = tid_data->txq_id;
3443         IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3444                             mvmsta->deflink.sta_id, tid, txq_id,
3445                             tid_data->state);
3446         old_state = tid_data->state;
3447         tid_data->state = IWL_AGG_OFF;
3448         mvmsta->agg_tids &= ~BIT(tid);
3449         spin_unlock_bh(&mvmsta->lock);
3450
3451         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3452
3453         if (old_state >= IWL_AGG_ON) {
3454                 iwl_mvm_drain_sta(mvm, mvmsta, true);
3455
3456                 if (iwl_mvm_has_new_tx_api(mvm)) {
3457                         if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3458                                                    BIT(tid)))
3459                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3460                         iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3461                 } else {
3462                         if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3463                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3464                         iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3465                 }
3466
3467                 iwl_mvm_drain_sta(mvm, mvmsta, false);
3468
3469                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3470         }
3471
3472         return 0;
3473 }
3474
3475 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3476 {
3477         int i, max = -1, max_offs = -1;
3478
3479         lockdep_assert_held(&mvm->mutex);
3480
3481         /* Pick the unused key offset with the highest 'deleted'
3482          * counter. Every time a key is deleted, all the counters
3483          * are incremented and the one that was just deleted is
3484          * reset to zero. Thus, the highest counter is the one
3485          * that was deleted longest ago. Pick that one.
3486          */
3487         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3488                 if (test_bit(i, mvm->fw_key_table))
3489                         continue;
3490                 if (mvm->fw_key_deleted[i] > max) {
3491                         max = mvm->fw_key_deleted[i];
3492                         max_offs = i;
3493                 }
3494         }
3495
3496         if (max_offs < 0)
3497                 return STA_KEY_IDX_INVALID;
3498
3499         return max_offs;
3500 }
3501
3502 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3503                                                struct ieee80211_vif *vif,
3504                                                struct ieee80211_sta *sta)
3505 {
3506         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3507
3508         if (sta)
3509                 return iwl_mvm_sta_from_mac80211(sta);
3510
3511         /*
3512          * The device expects GTKs for station interfaces to be
3513          * installed as GTKs for the AP station. If we have no
3514          * station ID, then use AP's station ID.
3515          */
3516         if (vif->type == NL80211_IFTYPE_STATION &&
3517             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3518                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3519
3520                 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3521                                             lockdep_is_held(&mvm->mutex));
3522
3523                 /*
3524                  * It is possible that the 'sta' parameter is NULL,
3525                  * for example when a GTK is removed - the sta_id will then
3526                  * be the AP ID, and no station was passed by mac80211.
3527                  */
3528                 if (IS_ERR_OR_NULL(sta))
3529                         return NULL;
3530
3531                 return iwl_mvm_sta_from_mac80211(sta);
3532         }
3533
3534         return NULL;
3535 }
3536
3537 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3538 {
3539         int i;
3540
3541         for (i = len - 1; i >= 0; i--) {
3542                 if (pn1[i] > pn2[i])
3543                         return 1;
3544                 if (pn1[i] < pn2[i])
3545                         return -1;
3546         }
3547
3548         return 0;
3549 }
3550
3551 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3552                                 u32 sta_id,
3553                                 struct ieee80211_key_conf *key, bool mcast,
3554                                 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3555                                 u8 key_offset, bool mfp)
3556 {
3557         union {
3558                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3559                 struct iwl_mvm_add_sta_key_cmd cmd;
3560         } u = {};
3561         __le16 key_flags;
3562         int ret;
3563         u32 status;
3564         u16 keyidx;
3565         u64 pn = 0;
3566         int i, size;
3567         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3568                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3569         int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3570                                             new_api ? 2 : 1);
3571
3572         if (sta_id == IWL_MVM_INVALID_STA)
3573                 return -EINVAL;
3574
3575         keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3576                  STA_KEY_FLG_KEYID_MSK;
3577         key_flags = cpu_to_le16(keyidx);
3578         key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3579
3580         if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
3581                 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);
3582
3583         switch (key->cipher) {
3584         case WLAN_CIPHER_SUITE_TKIP:
3585                 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3586                 if (api_ver >= 2) {
3587                         memcpy((void *)&u.cmd.tx_mic_key,
3588                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3589                                IWL_MIC_KEY_SIZE);
3590
3591                         memcpy((void *)&u.cmd.rx_mic_key,
3592                                &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3593                                IWL_MIC_KEY_SIZE);
3594                         pn = atomic64_read(&key->tx_pn);
3595
3596                 } else {
3597                         u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3598                         for (i = 0; i < 5; i++)
3599                                 u.cmd_v1.tkip_rx_ttak[i] =
3600                                         cpu_to_le16(tkip_p1k[i]);
3601                 }
3602                 memcpy(u.cmd.common.key, key->key, key->keylen);
3603                 break;
3604         case WLAN_CIPHER_SUITE_CCMP:
3605                 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3606                 memcpy(u.cmd.common.key, key->key, key->keylen);
3607                 if (api_ver >= 2)
3608                         pn = atomic64_read(&key->tx_pn);
3609                 break;
3610         case WLAN_CIPHER_SUITE_WEP104:
3611                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3612                 fallthrough;
3613         case WLAN_CIPHER_SUITE_WEP40:
3614                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3615                 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3616                 break;
3617         case WLAN_CIPHER_SUITE_GCMP_256:
3618                 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3619                 fallthrough;
3620         case WLAN_CIPHER_SUITE_GCMP:
3621                 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3622                 memcpy(u.cmd.common.key, key->key, key->keylen);
3623                 if (api_ver >= 2)
3624                         pn = atomic64_read(&key->tx_pn);
3625                 break;
3626         default:
3627                 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3628                 memcpy(u.cmd.common.key, key->key, key->keylen);
3629         }
3630
3631         if (mcast)
3632                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3633         if (mfp)
3634                 key_flags |= cpu_to_le16(STA_KEY_MFP);
3635
3636         u.cmd.common.key_offset = key_offset;
3637         u.cmd.common.key_flags = key_flags;
3638         u.cmd.common.sta_id = sta_id;
3639
3640         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3641                 i = 0;
3642         else
3643                 i = -1;
3644
3645         for (; i < IEEE80211_NUM_TIDS; i++) {
3646                 struct ieee80211_key_seq seq = {};
3647                 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3648                 int rx_pn_len = 8;
3649                 /* there's a hole at 2/3 in FW format depending on version */
3650                 int hole = api_ver >= 3 ? 0 : 2;
3651
3652                 ieee80211_get_key_rx_seq(key, i, &seq);
3653
3654                 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3655                         rx_pn[0] = seq.tkip.iv16;
3656                         rx_pn[1] = seq.tkip.iv16 >> 8;
3657                         rx_pn[2 + hole] = seq.tkip.iv32;
3658                         rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3659                         rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3660                         rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3661                 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3662                         rx_pn = seq.hw.seq;
3663                         rx_pn_len = seq.hw.seq_len;
3664                 } else {
3665                         rx_pn[0] = seq.ccmp.pn[0];
3666                         rx_pn[1] = seq.ccmp.pn[1];
3667                         rx_pn[2 + hole] = seq.ccmp.pn[2];
3668                         rx_pn[3 + hole] = seq.ccmp.pn[3];
3669                         rx_pn[4 + hole] = seq.ccmp.pn[4];
3670                         rx_pn[5 + hole] = seq.ccmp.pn[5];
3671                 }
3672
3673                 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3674                                    rx_pn_len) > 0)
3675                         memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3676                                rx_pn_len);
3677         }
3678
3679         if (api_ver >= 2) {
3680                 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3681                 size = sizeof(u.cmd);
3682         } else {
3683                 size = sizeof(u.cmd_v1);
3684         }
3685
3686         status = ADD_STA_SUCCESS;
3687         if (cmd_flags & CMD_ASYNC)
3688                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3689                                            &u.cmd);
3690         else
3691                 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3692                                                   &u.cmd, &status);
3693
3694         switch (status) {
3695         case ADD_STA_SUCCESS:
3696                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3697                 break;
3698         default:
3699                 ret = -EIO;
3700                 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3701                 break;
3702         }
3703
3704         return ret;
3705 }
3706
3707 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3708                                  struct ieee80211_key_conf *keyconf,
3709                                  u8 sta_id, bool remove_key)
3710 {
3711         struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3712
3713         /* verify the key details match the required command's expectations */
3714         if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3715                     (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3716                      keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3717                     (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3718                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3719                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3720                 return -EINVAL;
3721
3722         if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3723                     keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3724                 return -EINVAL;
3725
3726         igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3727         igtk_cmd.sta_id = cpu_to_le32(sta_id);
3728
3729         if (remove_key) {
3730                 /* This is a valid situation for IGTK */
3731                 if (sta_id == IWL_MVM_INVALID_STA)
3732                         return 0;
3733
3734                 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3735         } else {
3736                 struct ieee80211_key_seq seq;
3737                 const u8 *pn;
3738
3739                 switch (keyconf->cipher) {
3740                 case WLAN_CIPHER_SUITE_AES_CMAC:
3741                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3742                         break;
3743                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3744                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3745                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3746                         break;
3747                 default:
3748                         return -EINVAL;
3749                 }
3750
3751                 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3752                 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3753                         igtk_cmd.ctrl_flags |=
3754                                 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3755                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3756                 pn = seq.aes_cmac.pn;
3757                 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3758                                                        ((u64) pn[4] << 8) |
3759                                                        ((u64) pn[3] << 16) |
3760                                                        ((u64) pn[2] << 24) |
3761                                                        ((u64) pn[1] << 32) |
3762                                                        ((u64) pn[0] << 40));
3763         }
3764
3765         IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3766                        remove_key ? "removing" : "installing",
3767                        keyconf->keyidx >= 6 ? "B" : "",
3768                        keyconf->keyidx, igtk_cmd.sta_id);
3769
3770         if (!iwl_mvm_has_new_rx_api(mvm)) {
3771                 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3772                         .ctrl_flags = igtk_cmd.ctrl_flags,
3773                         .key_id = igtk_cmd.key_id,
3774                         .sta_id = igtk_cmd.sta_id,
3775                         .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3776                 };
3777
3778                 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3779                        ARRAY_SIZE(igtk_cmd_v1.igtk));
3780                 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3781                                             sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3782         }
3783         return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3784                                     sizeof(igtk_cmd), &igtk_cmd);
3785 }
3786
3787
3788 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3789                                        struct ieee80211_vif *vif,
3790                                        struct ieee80211_sta *sta)
3791 {
3792         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3793
3794         if (sta)
3795                 return sta->addr;
3796
3797         if (vif->type == NL80211_IFTYPE_STATION &&
3798             mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {
3799                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3800                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3801                                                 lockdep_is_held(&mvm->mutex));
3802                 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3803                         return NULL;
3804
3805                 return sta->addr;
3806         }
3807
3808
3809         return NULL;
3810 }
3811
3812 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3813                                  struct ieee80211_vif *vif,
3814                                  struct ieee80211_sta *sta,
3815                                  struct ieee80211_key_conf *keyconf,
3816                                  u8 key_offset,
3817                                  bool mcast)
3818 {
3819         const u8 *addr;
3820         struct ieee80211_key_seq seq;
3821         u16 p1k[5];
3822         u32 sta_id;
3823         bool mfp = false;
3824
3825         if (sta) {
3826                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3827
3828                 sta_id = mvm_sta->deflink.sta_id;
3829                 mfp = sta->mfp;
3830         } else if (vif->type == NL80211_IFTYPE_AP &&
3831                    !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3832                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3833
3834                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3835         } else {
3836                 IWL_ERR(mvm, "Failed to find station id\n");
3837                 return -EINVAL;
3838         }
3839
3840         if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3841                 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3842                 if (!addr) {
3843                         IWL_ERR(mvm, "Failed to find mac address\n");
3844                         return -EINVAL;
3845                 }
3846
3847                 /* get phase 1 key from mac80211 */
3848                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3849                 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3850
3851                 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3852                                             seq.tkip.iv32, p1k, 0, key_offset,
3853                                             mfp);
3854         }
3855
3856         return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3857                                     0, NULL, 0, key_offset, mfp);
3858 }
3859
3860 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3861                         struct ieee80211_vif *vif,
3862                         struct ieee80211_sta *sta,
3863                         struct ieee80211_key_conf *keyconf,
3864                         u8 key_offset)
3865 {
3866         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3867         struct iwl_mvm_sta *mvm_sta;
3868         u8 sta_id = IWL_MVM_INVALID_STA;
3869         int ret;
3870         static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3871
3872         lockdep_assert_held(&mvm->mutex);
3873
3874         if (vif->type != NL80211_IFTYPE_AP ||
3875             keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3876                 /* Get the station id from the mvm local station table */
3877                 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3878                 if (!mvm_sta) {
3879                         IWL_ERR(mvm, "Failed to find station\n");
3880                         return -EINVAL;
3881                 }
3882                 sta_id = mvm_sta->deflink.sta_id;
3883
3884                 /*
3885                  * It is possible that the 'sta' parameter is NULL, and thus
3886                  * there is a need to retrieve the sta from the local station
3887                  * table.
3888                  */
3889                 if (!sta) {
3890                         sta = rcu_dereference_protected(
3891                                 mvm->fw_id_to_mac_id[sta_id],
3892                                 lockdep_is_held(&mvm->mutex));
3893                         if (IS_ERR_OR_NULL(sta)) {
3894                                 IWL_ERR(mvm, "Invalid station id\n");
3895                                 return -EINVAL;
3896                         }
3897                 }
3898
3899                 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3900                         return -EINVAL;
3901         } else {
3902                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3903
3904                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3905         }
3906
3907         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3908             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3909             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3910                 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3911                 goto end;
3912         }
3913
3914         /* If the key_offset is not pre-assigned, we need to find a
3915          * new offset to use.  In normal cases, the offset is not
3916          * pre-assigned, but during HW_RESTART we want to reuse the
3917          * same indices, so we pass them when this function is called.
3918          *
3919          * In D3 entry, we need to hardcoded the indices (because the
3920          * firmware hardcodes the PTK offset to 0).  In this case, we
3921          * need to make sure we don't overwrite the hw_key_idx in the
3922          * keyconf structure, because otherwise we cannot configure
3923          * the original ones back when resuming.
3924          */
3925         if (key_offset == STA_KEY_IDX_INVALID) {
3926                 key_offset  = iwl_mvm_set_fw_key_idx(mvm);
3927                 if (key_offset == STA_KEY_IDX_INVALID)
3928                         return -ENOSPC;
3929                 keyconf->hw_key_idx = key_offset;
3930         }
3931
3932         ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3933         if (ret)
3934                 goto end;
3935
3936         /*
3937          * For WEP, the same key is used for multicast and unicast. Upload it
3938          * again, using the same key offset, and now pointing the other one
3939          * to the same key slot (offset).
3940          * If this fails, remove the original as well.
3941          */
3942         if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3943              keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3944             sta) {
3945                 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3946                                             key_offset, !mcast);
3947                 if (ret) {
3948                         __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3949                         goto end;
3950                 }
3951         }
3952
3953         __set_bit(key_offset, mvm->fw_key_table);
3954
3955 end:
3956         IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3957                       keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3958                       sta ? sta->addr : zero_addr, ret);
3959         return ret;
3960 }
3961
3962 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3963                            struct ieee80211_vif *vif,
3964                            struct ieee80211_sta *sta,
3965                            struct ieee80211_key_conf *keyconf)
3966 {
3967         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3968         struct iwl_mvm_sta *mvm_sta;
3969         u8 sta_id = IWL_MVM_INVALID_STA;
3970         int ret, i;
3971
3972         lockdep_assert_held(&mvm->mutex);
3973
3974         /* Get the station from the mvm local station table */
3975         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3976         if (mvm_sta)
3977                 sta_id = mvm_sta->deflink.sta_id;
3978         else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3979                 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3980
3981
3982         IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3983                       keyconf->keyidx, sta_id);
3984
3985         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3986             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3987             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3988                 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3989
3990         if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3991                 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3992                         keyconf->hw_key_idx);
3993                 return -ENOENT;
3994         }
3995
3996         /* track which key was deleted last */
3997         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3998                 if (mvm->fw_key_deleted[i] < U8_MAX)
3999                         mvm->fw_key_deleted[i]++;
4000         }
4001         mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
4002
4003         if (sta && !mvm_sta) {
4004                 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
4005                 return 0;
4006         }
4007
4008         ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
4009         if (ret)
4010                 return ret;
4011
4012         /* delete WEP key twice to get rid of (now useless) offset */
4013         if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4014             keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4015                 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4016
4017         return ret;
4018 }
4019
4020 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4021                              struct ieee80211_vif *vif,
4022                              struct ieee80211_key_conf *keyconf,
4023                              struct ieee80211_sta *sta, u32 iv32,
4024                              u16 *phase1key)
4025 {
4026         struct iwl_mvm_sta *mvm_sta;
4027         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4028         bool mfp = sta ? sta->mfp : false;
4029
4030         rcu_read_lock();
4031
4032         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4033         if (WARN_ON_ONCE(!mvm_sta))
4034                 goto unlock;
4035         iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4036                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4037                              mfp);
4038
4039  unlock:
4040         rcu_read_unlock();
4041 }
4042
4043 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4044                                 struct ieee80211_sta *sta)
4045 {
4046         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4047         struct iwl_mvm_add_sta_cmd cmd = {
4048                 .add_modify = STA_MODE_MODIFY,
4049                 .sta_id = mvmsta->deflink.sta_id,
4050                 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4051                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4052         };
4053         int ret;
4054
4055         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4056                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4057         if (ret)
4058                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4059 }
4060
4061 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4062                                        struct ieee80211_sta *sta,
4063                                        enum ieee80211_frame_release_type reason,
4064                                        u16 cnt, u16 tids, bool more_data,
4065                                        bool single_sta_queue)
4066 {
4067         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4068         struct iwl_mvm_add_sta_cmd cmd = {
4069                 .add_modify = STA_MODE_MODIFY,
4070                 .sta_id = mvmsta->deflink.sta_id,
4071                 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4072                 .sleep_tx_count = cpu_to_le16(cnt),
4073                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4074         };
4075         int tid, ret;
4076         unsigned long _tids = tids;
4077
4078         /* convert TIDs to ACs - we don't support TSPEC so that's OK
4079          * Note that this field is reserved and unused by firmware not
4080          * supporting GO uAPSD, so it's safe to always do this.
4081          */
4082         for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4083                 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4084
4085         /* If we're releasing frames from aggregation or dqa queues then check
4086          * if all the queues that we're releasing frames from, combined, have:
4087          *  - more frames than the service period, in which case more_data
4088          *    needs to be set
4089          *  - fewer than 'cnt' frames, in which case we need to adjust the
4090          *    firmware command (but do that unconditionally)
4091          */
4092         if (single_sta_queue) {
4093                 int remaining = cnt;
4094                 int sleep_tx_count;
4095
4096                 spin_lock_bh(&mvmsta->lock);
4097                 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4098                         struct iwl_mvm_tid_data *tid_data;
4099                         u16 n_queued;
4100
4101                         tid_data = &mvmsta->tid_data[tid];
4102
4103                         n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4104                         if (n_queued > remaining) {
4105                                 more_data = true;
4106                                 remaining = 0;
4107                                 break;
4108                         }
4109                         remaining -= n_queued;
4110                 }
4111                 sleep_tx_count = cnt - remaining;
4112                 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4113                         mvmsta->sleep_tx_count = sleep_tx_count;
4114                 spin_unlock_bh(&mvmsta->lock);
4115
4116                 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4117                 if (WARN_ON(cnt - remaining == 0)) {
4118                         ieee80211_sta_eosp(sta);
4119                         return;
4120                 }
4121         }
4122
4123         /* Note: this is ignored by firmware not supporting GO uAPSD */
4124         if (more_data)
4125                 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4126
4127         if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4128                 mvmsta->next_status_eosp = true;
4129                 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4130         } else {
4131                 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4132         }
4133
4134         /* block the Tx queues until the FW updated the sleep Tx count */
4135         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4136                                    CMD_ASYNC | CMD_BLOCK_TXQS,
4137                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4138         if (ret)
4139                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4140 }
4141
4142 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4143                            struct iwl_rx_cmd_buffer *rxb)
4144 {
4145         struct iwl_rx_packet *pkt = rxb_addr(rxb);
4146         struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4147         struct ieee80211_sta *sta;
4148         u32 sta_id = le32_to_cpu(notif->sta_id);
4149
4150         if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4151                 return;
4152
4153         rcu_read_lock();
4154         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4155         if (!IS_ERR_OR_NULL(sta))
4156                 ieee80211_sta_eosp(sta);
4157         rcu_read_unlock();
4158 }
4159
4160 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4161                                    struct iwl_mvm_sta *mvmsta,
4162                                    bool disable)
4163 {
4164         struct iwl_mvm_add_sta_cmd cmd = {
4165                 .add_modify = STA_MODE_MODIFY,
4166                 .sta_id = mvmsta->deflink.sta_id,
4167                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4168                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4169                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4170         };
4171         int ret;
4172
4173         if (mvm->mld_api_is_used) {
4174                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4175                         iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4176                 return;
4177         }
4178
4179         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4180                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4181         if (ret)
4182                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4183 }
4184
4185 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4186                                       struct ieee80211_sta *sta,
4187                                       bool disable)
4188 {
4189         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4190
4191         if (mvm->mld_api_is_used) {
4192                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4193                         iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4194                 return;
4195         }
4196
4197         spin_lock_bh(&mvm_sta->lock);
4198
4199         if (mvm_sta->disable_tx == disable) {
4200                 spin_unlock_bh(&mvm_sta->lock);
4201                 return;
4202         }
4203
4204         mvm_sta->disable_tx = disable;
4205
4206         /*
4207          * If sta PS state is handled by mac80211, tell it to start/stop
4208          * queuing tx for this station.
4209          */
4210         if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4211                 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4212
4213         iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4214
4215         spin_unlock_bh(&mvm_sta->lock);
4216 }
4217
4218 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4219                                               struct iwl_mvm_vif *mvmvif,
4220                                               struct iwl_mvm_int_sta *sta,
4221                                               bool disable)
4222 {
4223         u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4224         struct iwl_mvm_add_sta_cmd cmd = {
4225                 .add_modify = STA_MODE_MODIFY,
4226                 .sta_id = sta->sta_id,
4227                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4228                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4229                 .mac_id_n_color = cpu_to_le32(id),
4230         };
4231         int ret;
4232
4233         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4234                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4235         if (ret)
4236                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4237 }
4238
4239 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4240                                        struct iwl_mvm_vif *mvmvif,
4241                                        bool disable)
4242 {
4243         struct ieee80211_sta *sta;
4244         struct iwl_mvm_sta *mvm_sta;
4245         int i;
4246
4247         if (mvm->mld_api_is_used) {
4248                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4249                         iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,
4250                                                               disable);
4251                 return;
4252         }
4253
4254         rcu_read_lock();
4255
4256         /* Block/unblock all the stations of the given mvmvif */
4257         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4258                 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4259                 if (IS_ERR_OR_NULL(sta))
4260                         continue;
4261
4262                 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4263                 if (mvm_sta->mac_id_n_color !=
4264                     FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4265                         continue;
4266
4267                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4268         }
4269
4270         rcu_read_unlock();
4271
4272         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4273                 return;
4274
4275         /* Need to block/unblock also multicast station */
4276         if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA)
4277                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4278                                                   &mvmvif->deflink.mcast_sta,
4279                                                   disable);
4280
4281         /*
4282          * Only unblock the broadcast station (FW blocks it for immediate
4283          * quiet, not the driver)
4284          */
4285         if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA)
4286                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4287                                                   &mvmvif->deflink.bcast_sta,
4288                                                   disable);
4289 }
4290
4291 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4292 {
4293         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4294         struct iwl_mvm_sta *mvmsta;
4295
4296         rcu_read_lock();
4297
4298         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4299
4300         if (mvmsta)
4301                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4302
4303         rcu_read_unlock();
4304 }
4305
4306 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4307 {
4308         u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4309
4310         /*
4311          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4312          * to align the wrap around of ssn so we compare relevant values.
4313          */
4314         if (mvm->trans->trans_cfg->gen2)
4315                 sn &= 0xff;
4316
4317         return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4318 }
4319
4320 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4321                          struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4322                          u8 *key, u32 key_len,
4323                          struct ieee80211_key_conf *keyconf)
4324 {
4325         int ret;
4326         u16 queue;
4327         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4328         unsigned int wdg_timeout =
4329                 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
4330         bool mld = iwl_mvm_has_mld_api(mvm->fw);
4331         u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK;
4332
4333         ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4334                                        NL80211_IFTYPE_UNSPECIFIED, type);
4335         if (ret)
4336                 return ret;
4337
4338         if (mld)
4339                 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4340                                                          mvmvif->deflink.fw_link_id,
4341                                                          &queue,
4342                                                          IWL_MAX_TID_COUNT,
4343                                                          &wdg_timeout);
4344         else
4345                 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4346                                                      mvmvif->color, addr, sta,
4347                                                      &queue,
4348                                                      IWL_MVM_TX_FIFO_BE);
4349         if (ret)
4350                 goto out;
4351
4352         keyconf->cipher = cipher;
4353         memcpy(keyconf->key, key, key_len);
4354         keyconf->keylen = key_len;
4355         keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4356
4357         if (mld) {
4358                 /* The MFP flag is set according to the station mfp field. Since
4359                  * we don't have a station, set it manually.
4360                  */
4361                 u32 key_flags =
4362                         iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4363                         IWL_SEC_KEY_FLAG_MFP;
4364                 u32 sta_mask = BIT(sta->sta_id);
4365
4366                 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4367         } else {
4368                 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4369                                            0, NULL, 0, 0, true);
4370         }
4371
4372 out:
4373         if (ret)
4374                 iwl_mvm_dealloc_int_sta(mvm, sta);
4375         return ret;
4376 }
4377
4378 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4379                                    struct ieee80211_vif *vif,
4380                                    u32 id)
4381 {
4382         struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4383                 .id = cpu_to_le32(id),
4384         };
4385         int ret;
4386
4387         ret = iwl_mvm_send_cmd_pdu(mvm,
4388                                    WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4389                                    CMD_ASYNC,
4390                                    sizeof(cancel_channel_switch_cmd),
4391                                    &cancel_channel_switch_cmd);
4392         if (ret)
4393                 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4394 }