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_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_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         if (sta) {
 861                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 862                 struct ieee80211_link_sta *link_sta;
 863                 unsigned int link_id;
 864
 865                 rcu_read_lock();
 866                 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {
 867                         struct iwl_mvm_link_sta *link =
 868                                 rcu_dereference_protected(mvmsta->link[link_id],
 869                                                           lockdep_is_held(&mvm->mutex));
 870
 871                         if (!link)
 872                                 continue;
 873
 874                         sta_mask |= BIT(link->sta_id);
 875                 }
 876                 rcu_read_unlock();
 877         } else {
 878                 sta_mask |= BIT(sta_id);
 879         }
 880
 881         if (!sta_mask)
 882                 return -EINVAL;
 883
 884         queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,
 885                                     tid, size, timeout);
 886
 887         if (queue >= 0)
 888                 IWL_DEBUG_TX_QUEUES(mvm,
 889                                     "Enabling TXQ #%d for sta mask 0x%x tid %d\n",
 890                                     queue, sta_mask, tid);
 891
 892         return queue;
 893 }
 894
 895 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
 896                                         struct ieee80211_sta *sta, u8 ac,
 897                                         int tid)
 898 {
 899         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 900         struct iwl_mvm_txq *mvmtxq =
 901                 iwl_mvm_txq_from_tid(sta, tid);
 902         unsigned int wdg_timeout =
 903                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
 904         int queue = -1;
 905
 906         lockdep_assert_held(&mvm->mutex);
 907
 908         IWL_DEBUG_TX_QUEUES(mvm,
 909                             "Allocating queue for sta %d on tid %d\n",
 910                             mvmsta->deflink.sta_id, tid);
 911         queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,
 912                                         tid, wdg_timeout);
 913         if (queue < 0)
 914                 return queue;
 915
 916         mvmtxq->txq_id = queue;
 917         mvm->tvqm_info[queue].txq_tid = tid;
 918         mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;
 919
 920         IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
 921
 922         spin_lock_bh(&mvmsta->lock);
 923         mvmsta->tid_data[tid].txq_id = queue;
 924         spin_unlock_bh(&mvmsta->lock);
 925
 926         return 0;
 927 }
 928
 929 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,
 930                                        struct ieee80211_sta *sta,
 931                                        int queue, u8 sta_id, u8 tid)
 932 {
 933         bool enable_queue = true;
 934
 935         /* Make sure this TID isn't already enabled */
 936         if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
 937                 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
 938                         queue, tid);
 939                 return false;
 940         }
 941
 942         /* Update mappings and refcounts */
 943         if (mvm->queue_info[queue].tid_bitmap)
 944                 enable_queue = false;
 945
 946         mvm->queue_info[queue].tid_bitmap |= BIT(tid);
 947         mvm->queue_info[queue].ra_sta_id = sta_id;
 948
 949         if (enable_queue) {
 950                 if (tid != IWL_MAX_TID_COUNT)
 951                         mvm->queue_info[queue].mac80211_ac =
 952                                 tid_to_mac80211_ac[tid];
 953                 else
 954                         mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
 955
 956                 mvm->queue_info[queue].txq_tid = tid;
 957         }
 958
 959         if (sta) {
 960                 struct iwl_mvm_txq *mvmtxq =
 961                         iwl_mvm_txq_from_tid(sta, tid);
 962
 963                 mvmtxq->txq_id = queue;
 964         }
 965
 966         IWL_DEBUG_TX_QUEUES(mvm,
 967                             "Enabling TXQ #%d tids=0x%x\n",
 968                             queue, mvm->queue_info[queue].tid_bitmap);
 969
 970         return enable_queue;
 971 }
 972
 973 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 974                                int queue, u16 ssn,
 975                                const struct iwl_trans_txq_scd_cfg *cfg,
 976                                unsigned int wdg_timeout)
 977 {
 978         struct iwl_scd_txq_cfg_cmd cmd = {
 979                 .scd_queue = queue,
 980                 .action = SCD_CFG_ENABLE_QUEUE,
 981                 .window = cfg->frame_limit,
 982                 .sta_id = cfg->sta_id,
 983                 .ssn = cpu_to_le16(ssn),
 984                 .tx_fifo = cfg->fifo,
 985                 .aggregate = cfg->aggregate,
 986                 .tid = cfg->tid,
 987         };
 988         bool inc_ssn;
 989
 990         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 991                 return false;
 992
 993         /* Send the enabling command if we need to */
 994         if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))
 995                 return false;
 996
 997         inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
 998                                            NULL, wdg_timeout);
 999         if (inc_ssn)
1000                 le16_add_cpu(&cmd.ssn, 1);
1001
1002         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
1003              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
1004
1005         return inc_ssn;
1006 }
1007
1008 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)
1009 {
1010         struct iwl_scd_txq_cfg_cmd cmd = {
1011                 .scd_queue = queue,
1012                 .action = SCD_CFG_UPDATE_QUEUE_TID,
1013         };
1014         int tid;
1015         unsigned long tid_bitmap;
1016         int ret;
1017
1018         lockdep_assert_held(&mvm->mutex);
1019
1020         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1021                 return;
1022
1023         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1024
1025         if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
1026                 return;
1027
1028         /* Find any TID for queue */
1029         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1030         cmd.tid = tid;
1031         cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1032
1033         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
1034         if (ret) {
1035                 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
1036                         queue, ret);
1037                 return;
1038         }
1039
1040         mvm->queue_info[queue].txq_tid = tid;
1041         IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
1042                             queue, tid);
1043 }
1044
1045 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
1046 {
1047         struct ieee80211_sta *sta;
1048         struct iwl_mvm_sta *mvmsta;
1049         u8 sta_id;
1050         int tid = -1;
1051         unsigned long tid_bitmap;
1052         unsigned int wdg_timeout;
1053         int ssn;
1054         int ret = true;
1055
1056         /* queue sharing is disabled on new TX path */
1057         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1058                 return;
1059
1060         lockdep_assert_held(&mvm->mutex);
1061
1062         sta_id = mvm->queue_info[queue].ra_sta_id;
1063         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1064
1065         /* Find TID for queue, and make sure it is the only one on the queue */
1066         tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
1067         if (tid_bitmap != BIT(tid)) {
1068                 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
1069                         queue, tid_bitmap);
1070                 return;
1071         }
1072
1073         IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
1074                             tid);
1075
1076         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1077                                         lockdep_is_held(&mvm->mutex));
1078
1079         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1080                 return;
1081
1082         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1083         wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1084
1085         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1086
1087         ret = iwl_mvm_redirect_queue(mvm, queue, tid,
1088                                      tid_to_mac80211_ac[tid], ssn,
1089                                      wdg_timeout, true,
1090                                      iwl_mvm_txq_from_tid(sta, tid));
1091         if (ret) {
1092                 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1093                 return;
1094         }
1095
1096         /* If aggs should be turned back on - do it */
1097         if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1098                 struct iwl_mvm_add_sta_cmd cmd = {0};
1099
1100                 mvmsta->tid_disable_agg &= ~BIT(tid);
1101
1102                 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1103                 cmd.sta_id = mvmsta->deflink.sta_id;
1104                 cmd.add_modify = STA_MODE_MODIFY;
1105                 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1106                 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1107                 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1108
1109                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1110                                            iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1111                 if (!ret) {
1112                         IWL_DEBUG_TX_QUEUES(mvm,
1113                                             "TXQ #%d is now aggregated again\n",
1114                                             queue);
1115
1116                         /* Mark queue intenally as aggregating again */
1117                         iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1118                 }
1119         }
1120
1121         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1122 }
1123
1124 /*
1125  * Remove inactive TIDs of a given queue.
1126  * If all queue TIDs are inactive - mark the queue as inactive
1127  * If only some the queue TIDs are inactive - unmap them from the queue
1128  *
1129  * Returns %true if all TIDs were removed and the queue could be reused.
1130  */
1131 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1132                                          struct iwl_mvm_sta *mvmsta, int queue,
1133                                          unsigned long tid_bitmap,
1134                                          unsigned long *unshare_queues,
1135                                          unsigned long *changetid_queues)
1136 {
1137         unsigned int tid;
1138
1139         lockdep_assert_held(&mvmsta->lock);
1140         lockdep_assert_held(&mvm->mutex);
1141
1142         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1143                 return false;
1144
1145         /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1146         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1147                 /* If some TFDs are still queued - don't mark TID as inactive */
1148                 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1149                         tid_bitmap &= ~BIT(tid);
1150
1151                 /* Don't mark as inactive any TID that has an active BA */
1152                 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1153                         tid_bitmap &= ~BIT(tid);
1154         }
1155
1156         /* If all TIDs in the queue are inactive - return it can be reused */
1157         if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1158                 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);
1159                 return true;
1160         }
1161
1162         /*
1163          * If we are here, this is a shared queue and not all TIDs timed-out.
1164          * Remove the ones that did.
1165          */
1166         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1167                 u16 q_tid_bitmap;
1168
1169                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1170                 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1171
1172                 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1173
1174                 /*
1175                  * We need to take into account a situation in which a TXQ was
1176                  * allocated to TID x, and then turned shared by adding TIDs y
1177                  * and z. If TID x becomes inactive and is removed from the TXQ,
1178                  * ownership must be given to one of the remaining TIDs.
1179                  * This is mainly because if TID x continues - a new queue can't
1180                  * be allocated for it as long as it is an owner of another TXQ.
1181                  *
1182                  * Mark this queue in the right bitmap, we'll send the command
1183                  * to the firmware later.
1184                  */
1185                 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))
1186                         set_bit(queue, changetid_queues);
1187
1188                 IWL_DEBUG_TX_QUEUES(mvm,
1189                                     "Removing inactive TID %d from shared Q:%d\n",
1190                                     tid, queue);
1191         }
1192
1193         IWL_DEBUG_TX_QUEUES(mvm,
1194                             "TXQ #%d left with tid bitmap 0x%x\n", queue,
1195                             mvm->queue_info[queue].tid_bitmap);
1196
1197         /*
1198          * There may be different TIDs with the same mac queues, so make
1199          * sure all TIDs have existing corresponding mac queues enabled
1200          */
1201         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1202
1203         /* If the queue is marked as shared - "unshare" it */
1204         if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&
1205             mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1206                 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1207                                     queue);
1208                 set_bit(queue, unshare_queues);
1209         }
1210
1211         return false;
1212 }
1213
1214 /*
1215  * Check for inactivity - this includes checking if any queue
1216  * can be unshared and finding one (and only one) that can be
1217  * reused.
1218  * This function is also invoked as a sort of clean-up task,
1219  * in which case @alloc_for_sta is IWL_INVALID_STA.
1220  *
1221  * Returns the queue number, or -ENOSPC.
1222  */
1223 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
1224 {
1225         unsigned long now = jiffies;
1226         unsigned long unshare_queues = 0;
1227         unsigned long changetid_queues = 0;
1228         int i, ret, free_queue = -ENOSPC;
1229         struct ieee80211_sta *queue_owner  = NULL;
1230
1231         lockdep_assert_held(&mvm->mutex);
1232
1233         if (iwl_mvm_has_new_tx_api(mvm))
1234                 return -ENOSPC;
1235
1236         rcu_read_lock();
1237
1238         /* we skip the CMD queue below by starting at 1 */
1239         BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);
1240
1241         for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {
1242                 struct ieee80211_sta *sta;
1243                 struct iwl_mvm_sta *mvmsta;
1244                 u8 sta_id;
1245                 int tid;
1246                 unsigned long inactive_tid_bitmap = 0;
1247                 unsigned long queue_tid_bitmap;
1248
1249                 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1250                 if (!queue_tid_bitmap)
1251                         continue;
1252
1253                 /* If TXQ isn't in active use anyway - nothing to do here... */
1254                 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1255                     mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)
1256                         continue;
1257
1258                 /* Check to see if there are inactive TIDs on this queue */
1259                 for_each_set_bit(tid, &queue_tid_bitmap,
1260                                  IWL_MAX_TID_COUNT + 1) {
1261                         if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1262                                        IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1263                                 continue;
1264
1265                         inactive_tid_bitmap |= BIT(tid);
1266                 }
1267
1268                 /* If all TIDs are active - finish check on this queue */
1269                 if (!inactive_tid_bitmap)
1270                         continue;
1271
1272                 /*
1273                  * If we are here - the queue hadn't been served recently and is
1274                  * in use
1275                  */
1276
1277                 sta_id = mvm->queue_info[i].ra_sta_id;
1278                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1279
1280                 /*
1281                  * If the STA doesn't exist anymore, it isn't an error. It could
1282                  * be that it was removed since getting the queues, and in this
1283                  * case it should've inactivated its queues anyway.
1284                  */
1285                 if (IS_ERR_OR_NULL(sta))
1286                         continue;
1287
1288                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1289
1290                 spin_lock_bh(&mvmsta->lock);
1291                 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1292                                                    inactive_tid_bitmap,
1293                                                    &unshare_queues,
1294                                                    &changetid_queues);
1295                 if (ret && free_queue < 0) {
1296                         queue_owner = sta;
1297                         free_queue = i;
1298                 }
1299                 /* only unlock sta lock - we still need the queue info lock */
1300                 spin_unlock_bh(&mvmsta->lock);
1301         }
1302
1303
1304         /* Reconfigure queues requiring reconfiguation */
1305         for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)
1306                 iwl_mvm_unshare_queue(mvm, i);
1307         for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)
1308                 iwl_mvm_change_queue_tid(mvm, i);
1309
1310         rcu_read_unlock();
1311
1312         if (free_queue >= 0 && alloc_for_sta != IWL_INVALID_STA) {
1313                 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,
1314                                                   alloc_for_sta);
1315                 if (ret)
1316                         return ret;
1317         }
1318
1319         return free_queue;
1320 }
1321
1322 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
1323                                    struct ieee80211_sta *sta, u8 ac, int tid)
1324 {
1325         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1326         struct iwl_trans_txq_scd_cfg cfg = {
1327                 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
1328                 .sta_id = mvmsta->deflink.sta_id,
1329                 .tid = tid,
1330                 .frame_limit = IWL_FRAME_LIMIT,
1331         };
1332         unsigned int wdg_timeout =
1333                 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);
1334         int queue = -1;
1335         u16 queue_tmp;
1336         unsigned long disable_agg_tids = 0;
1337         enum iwl_mvm_agg_state queue_state;
1338         bool shared_queue = false, inc_ssn;
1339         int ssn;
1340         unsigned long tfd_queue_mask;
1341         int ret;
1342
1343         lockdep_assert_held(&mvm->mutex);
1344
1345         if (iwl_mvm_has_new_tx_api(mvm))
1346                 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
1347
1348         spin_lock_bh(&mvmsta->lock);
1349         tfd_queue_mask = mvmsta->tfd_queue_msk;
1350         ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
1351         spin_unlock_bh(&mvmsta->lock);
1352
1353         if (tid == IWL_MAX_TID_COUNT) {
1354                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1355                                                 IWL_MVM_DQA_MIN_MGMT_QUEUE,
1356                                                 IWL_MVM_DQA_MAX_MGMT_QUEUE);
1357                 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
1358                         IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
1359                                             queue);
1360
1361                 /* If no such queue is found, we'll use a DATA queue instead */
1362         }
1363
1364         if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
1365             (mvm->queue_info[mvmsta->reserved_queue].status ==
1366                         IWL_MVM_QUEUE_RESERVED)) {
1367                 queue = mvmsta->reserved_queue;
1368                 mvm->queue_info[queue].reserved = true;
1369                 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
1370         }
1371
1372         if (queue < 0)
1373                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1374                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1375                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1376         if (queue < 0) {
1377                 /* try harder - perhaps kill an inactive queue */
1378                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1379         }
1380
1381         /* No free queue - we'll have to share */
1382         if (queue <= 0) {
1383                 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
1384                 if (queue > 0) {
1385                         shared_queue = true;
1386                         mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
1387                 }
1388         }
1389
1390         /*
1391          * Mark TXQ as ready, even though it hasn't been fully configured yet,
1392          * to make sure no one else takes it.
1393          * This will allow avoiding re-acquiring the lock at the end of the
1394          * configuration. On error we'll mark it back as free.
1395          */
1396         if (queue > 0 && !shared_queue)
1397                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1398
1399         /* This shouldn't happen - out of queues */
1400         if (WARN_ON(queue <= 0)) {
1401                 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
1402                         tid, cfg.sta_id);
1403                 return queue;
1404         }
1405
1406         /*
1407          * Actual en/disablement of aggregations is through the ADD_STA HCMD,
1408          * but for configuring the SCD to send A-MPDUs we need to mark the queue
1409          * as aggregatable.
1410          * Mark all DATA queues as allowing to be aggregated at some point
1411          */
1412         cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1413                          queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1414
1415         IWL_DEBUG_TX_QUEUES(mvm,
1416                             "Allocating %squeue #%d to sta %d on tid %d\n",
1417                             shared_queue ? "shared " : "", queue,
1418                             mvmsta->deflink.sta_id, tid);
1419
1420         if (shared_queue) {
1421                 /* Disable any open aggs on this queue */
1422                 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
1423
1424                 if (disable_agg_tids) {
1425                         IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
1426                                             queue);
1427                         iwl_mvm_invalidate_sta_queue(mvm, queue,
1428                                                      disable_agg_tids, false);
1429                 }
1430         }
1431
1432         inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);
1433
1434         /*
1435          * Mark queue as shared in transport if shared
1436          * Note this has to be done after queue enablement because enablement
1437          * can also set this value, and there is no indication there to shared
1438          * queues
1439          */
1440         if (shared_queue)
1441                 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
1442
1443         spin_lock_bh(&mvmsta->lock);
1444         /*
1445          * This looks racy, but it is not. We have only one packet for
1446          * this ra/tid in our Tx path since we stop the Qdisc when we
1447          * need to allocate a new TFD queue.
1448          */
1449         if (inc_ssn) {
1450                 mvmsta->tid_data[tid].seq_number += 0x10;
1451                 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
1452         }
1453         mvmsta->tid_data[tid].txq_id = queue;
1454         mvmsta->tfd_queue_msk |= BIT(queue);
1455         queue_state = mvmsta->tid_data[tid].state;
1456
1457         if (mvmsta->reserved_queue == queue)
1458                 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
1459         spin_unlock_bh(&mvmsta->lock);
1460
1461         if (!shared_queue) {
1462                 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
1463                 if (ret)
1464                         goto out_err;
1465
1466                 /* If we need to re-enable aggregations... */
1467                 if (queue_state == IWL_AGG_ON) {
1468                         ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1469                         if (ret)
1470                                 goto out_err;
1471                 }
1472         } else {
1473                 /* Redirect queue, if needed */
1474                 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,
1475                                              wdg_timeout, false,
1476                                              iwl_mvm_txq_from_tid(sta, tid));
1477                 if (ret)
1478                         goto out_err;
1479         }
1480
1481         return 0;
1482
1483 out_err:
1484         queue_tmp = queue;
1485         iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);
1486
1487         return ret;
1488 }
1489
1490 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,
1491                              struct ieee80211_txq *txq)
1492 {
1493         struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1494         int ret = -EINVAL;
1495
1496         lockdep_assert_held(&mvm->mutex);
1497
1498         if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
1499             !txq->sta) {
1500                 return 0;
1501         }
1502
1503         if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {
1504                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1505                 ret = 0;
1506         }
1507
1508         local_bh_disable();
1509         spin_lock(&mvm->add_stream_lock);
1510         if (!list_empty(&mvmtxq->list))
1511                 list_del_init(&mvmtxq->list);
1512         spin_unlock(&mvm->add_stream_lock);
1513         local_bh_enable();
1514
1515         return ret;
1516 }
1517
1518 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1519 {
1520         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1521                                            add_stream_wk);
1522
1523         guard(mvm)(mvm);
1524
1525         /* will reschedule to run after restart */
1526         if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ||
1527             test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1528                 return;
1529
1530         iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1531
1532         while (!list_empty(&mvm->add_stream_txqs)) {
1533                 struct iwl_mvm_txq *mvmtxq;
1534                 struct ieee80211_txq *txq;
1535                 u8 tid;
1536
1537                 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1538                                           struct iwl_mvm_txq, list);
1539
1540                 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1541                                    drv_priv);
1542                 tid = txq->tid;
1543                 if (tid == IEEE80211_NUM_TIDS)
1544                         tid = IWL_MAX_TID_COUNT;
1545
1546                 /*
1547                  * We can't really do much here, but if this fails we can't
1548                  * transmit anyway - so just don't transmit the frame etc.
1549                  * and let them back up ... we've tried our best to allocate
1550                  * a queue in the function itself.
1551                  */
1552                 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1553                         spin_lock_bh(&mvm->add_stream_lock);
1554                         list_del_init(&mvmtxq->list);
1555                         spin_unlock_bh(&mvm->add_stream_lock);
1556                         continue;
1557                 }
1558
1559                 /* now we're ready, any remaining races/concurrency will be
1560                  * handled in iwl_mvm_mac_itxq_xmit()
1561                  */
1562                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1563
1564                 local_bh_disable();
1565                 spin_lock(&mvm->add_stream_lock);
1566                 list_del_init(&mvmtxq->list);
1567                 spin_unlock(&mvm->add_stream_lock);
1568
1569                 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1570                 local_bh_enable();
1571         }
1572 }
1573
1574 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1575                                       struct ieee80211_sta *sta,
1576                                       enum nl80211_iftype vif_type)
1577 {
1578         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1579         int queue;
1580
1581         /* queue reserving is disabled on new TX path */
1582         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1583                 return 0;
1584
1585         /* run the general cleanup/unsharing of queues */
1586         iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1587
1588         /* Make sure we have free resources for this STA */
1589         if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1590             !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1591             (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1592              IWL_MVM_QUEUE_FREE))
1593                 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1594         else
1595                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1596                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1597                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1598         if (queue < 0) {
1599                 /* try again - this time kick out a queue if needed */
1600                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1601                 if (queue < 0) {
1602                         IWL_ERR(mvm, "No available queues for new station\n");
1603                         return -ENOSPC;
1604                 }
1605         }
1606         mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1607
1608         mvmsta->reserved_queue = queue;
1609
1610         IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1611                             queue, mvmsta->deflink.sta_id);
1612
1613         return 0;
1614 }
1615
1616 /*
1617  * In DQA mode, after a HW restart the queues should be allocated as before, in
1618  * order to avoid race conditions when there are shared queues. This function
1619  * does the re-mapping and queue allocation.
1620  *
1621  * Note that re-enabling aggregations isn't done in this function.
1622  */
1623 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1624                                           struct ieee80211_sta *sta)
1625 {
1626         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1627         unsigned int wdg =
1628                 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif);
1629         int i;
1630         struct iwl_trans_txq_scd_cfg cfg = {
1631                 .sta_id = mvm_sta->deflink.sta_id,
1632                 .frame_limit = IWL_FRAME_LIMIT,
1633         };
1634
1635         /* Make sure reserved queue is still marked as such (if allocated) */
1636         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1637                 mvm->queue_info[mvm_sta->reserved_queue].status =
1638                         IWL_MVM_QUEUE_RESERVED;
1639
1640         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1641                 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1642                 int txq_id = tid_data->txq_id;
1643                 int ac;
1644
1645                 if (txq_id == IWL_MVM_INVALID_QUEUE)
1646                         continue;
1647
1648                 ac = tid_to_mac80211_ac[i];
1649
1650                 if (iwl_mvm_has_new_tx_api(mvm)) {
1651                         IWL_DEBUG_TX_QUEUES(mvm,
1652                                             "Re-mapping sta %d tid %d\n",
1653                                             mvm_sta->deflink.sta_id, i);
1654                         txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1655                                                          mvm_sta->deflink.sta_id,
1656                                                          i, wdg);
1657                         /*
1658                          * on failures, just set it to IWL_MVM_INVALID_QUEUE
1659                          * to try again later, we have no other good way of
1660                          * failing here
1661                          */
1662                         if (txq_id < 0)
1663                                 txq_id = IWL_MVM_INVALID_QUEUE;
1664                         tid_data->txq_id = txq_id;
1665
1666                         /*
1667                          * Since we don't set the seq number after reset, and HW
1668                          * sets it now, FW reset will cause the seq num to start
1669                          * at 0 again, so driver will need to update it
1670                          * internally as well, so it keeps in sync with real val
1671                          */
1672                         tid_data->seq_number = 0;
1673                 } else {
1674                         u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1675
1676                         cfg.tid = i;
1677                         cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1678                         cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1679                                          txq_id ==
1680                                          IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1681
1682                         IWL_DEBUG_TX_QUEUES(mvm,
1683                                             "Re-mapping sta %d tid %d to queue %d\n",
1684                                             mvm_sta->deflink.sta_id, i,
1685                                             txq_id);
1686
1687                         iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1688                         mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1689                 }
1690         }
1691 }
1692
1693 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1694                                       struct iwl_mvm_int_sta *sta,
1695                                       const u8 *addr,
1696                                       u16 mac_id, u16 color)
1697 {
1698         struct iwl_mvm_add_sta_cmd cmd;
1699         int ret;
1700         u32 status = ADD_STA_SUCCESS;
1701
1702         lockdep_assert_held(&mvm->mutex);
1703
1704         memset(&cmd, 0, sizeof(cmd));
1705         cmd.sta_id = sta->sta_id;
1706
1707         if (iwl_mvm_has_new_station_api(mvm->fw) &&
1708             sta->type == IWL_STA_AUX_ACTIVITY)
1709                 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1710         else
1711                 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1712                                                                      color));
1713
1714         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1715                 cmd.station_type = sta->type;
1716
1717         if (!iwl_mvm_has_new_tx_api(mvm))
1718                 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1719         cmd.tid_disable_tx = cpu_to_le16(0xffff);
1720
1721         if (addr)
1722                 memcpy(cmd.addr, addr, ETH_ALEN);
1723
1724         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1725                                           iwl_mvm_add_sta_cmd_size(mvm),
1726                                           &cmd, &status);
1727         if (ret)
1728                 return ret;
1729
1730         switch (status & IWL_ADD_STA_STATUS_MASK) {
1731         case ADD_STA_SUCCESS:
1732                 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1733                 return 0;
1734         default:
1735                 ret = -EIO;
1736                 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1737                         status);
1738                 break;
1739         }
1740         return ret;
1741 }
1742
1743 /* Initialize driver data of a new sta */
1744 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1745                      struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1746 {
1747         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1748         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1749         struct iwl_mvm_rxq_dup_data *dup_data;
1750         int i, ret = 0;
1751
1752         lockdep_assert_held(&mvm->mutex);
1753
1754         mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1755                                                       mvmvif->color);
1756         mvm_sta->vif = vif;
1757
1758         /* for MLD sta_id(s) should be allocated for each link before calling
1759          * this function
1760          */
1761         if (!mvm->mld_api_is_used) {
1762                 if (WARN_ON(sta_id == IWL_INVALID_STA))
1763                         return -EINVAL;
1764
1765                 mvm_sta->deflink.sta_id = sta_id;
1766                 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1767
1768                 if (!mvm->trans->trans_cfg->gen2)
1769                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1770                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1771                 else
1772                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1773                                 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1774         }
1775
1776         mvm_sta->tt_tx_protection = false;
1777         mvm_sta->sta_type = sta_type;
1778
1779         mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1780
1781         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1782                 /*
1783                  * Mark all queues for this STA as unallocated and defer TX
1784                  * frames until the queue is allocated
1785                  */
1786                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1787         }
1788
1789         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1790                 struct iwl_mvm_txq *mvmtxq =
1791                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1792
1793                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1794                 INIT_LIST_HEAD(&mvmtxq->list);
1795                 atomic_set(&mvmtxq->tx_request, 0);
1796         }
1797
1798         if (iwl_mvm_has_new_rx_api(mvm)) {
1799                 int q;
1800
1801                 dup_data = kcalloc(mvm->trans->num_rx_queues,
1802                                    sizeof(*dup_data), GFP_KERNEL);
1803                 if (!dup_data)
1804                         return -ENOMEM;
1805                 /*
1806                  * Initialize all the last_seq values to 0xffff which can never
1807                  * compare equal to the frame's seq_ctrl in the check in
1808                  * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1809                  * number and fragmented packets don't reach that function.
1810                  *
1811                  * This thus allows receiving a packet with seqno 0 and the
1812                  * retry bit set as the very first packet on a new TID.
1813                  */
1814                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1815                         memset(dup_data[q].last_seq, 0xff,
1816                                sizeof(dup_data[q].last_seq));
1817                 mvm_sta->dup_data = dup_data;
1818         }
1819
1820         if (!iwl_mvm_has_new_tx_api(mvm)) {
1821                 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1822                                                  ieee80211_vif_type_p2p(vif));
1823                 if (ret)
1824                         return ret;
1825         }
1826
1827         /*
1828          * if rs is registered with mac80211, then "add station" will be handled
1829          * via the corresponding ops, otherwise need to notify rate scaling here
1830          */
1831         if (iwl_mvm_has_tlc_offload(mvm))
1832                 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1833         else
1834                 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1835
1836         iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1837
1838         /* MPDUs are counted only when EMLSR is possible */
1839         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1840             !sta->tdls && ieee80211_vif_is_mld(vif)) {
1841                 mvm_sta->mpdu_counters =
1842                         kcalloc(mvm->trans->num_rx_queues,
1843                                 sizeof(*mvm_sta->mpdu_counters),
1844                                 GFP_KERNEL);
1845                 if (mvm_sta->mpdu_counters)
1846                         for (int q = 0; q < mvm->trans->num_rx_queues; q++)
1847                                 spin_lock_init(&mvm_sta->mpdu_counters[q].lock);
1848         }
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_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_INVALID_STA);
1910                         mvmvif->deflink.ap_sta_id = sta_id;
1911                 } else {
1912                         WARN_ON(mvmvif->deflink.ap_sta_id == IWL_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 void iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2052                      struct ieee80211_sta *sta,
2053                      struct ieee80211_link_sta *link_sta)
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 (vif->type == NL80211_IFTYPE_STATION &&
2070             mvm_link->ap_sta_id == sta_id) {
2071                 /* first remove remaining keys */
2072                 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link,
2073                                           link_sta->link_id);
2074
2075                 mvm_link->ap_sta_id = IWL_INVALID_STA;
2076         }
2077
2078         /*
2079          * This shouldn't happen - the TDLS channel switch should be canceled
2080          * before the STA is removed.
2081          */
2082         if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2083                 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA;
2084                 cancel_delayed_work(&mvm->tdls_cs.dwork);
2085         }
2086 }
2087
2088 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2089                    struct ieee80211_vif *vif,
2090                    struct ieee80211_sta *sta)
2091 {
2092         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2093         int ret;
2094
2095         lockdep_assert_held(&mvm->mutex);
2096
2097         ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2098         if (ret)
2099                 return ret;
2100
2101         /* flush its queues here since we are freeing mvm_sta */
2102         ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2103                                 mvm_sta->tfd_queue_msk);
2104         if (ret)
2105                 return ret;
2106         if (iwl_mvm_has_new_tx_api(mvm)) {
2107                 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2108         } else {
2109                 u32 q_mask = mvm_sta->tfd_queue_msk;
2110
2111                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2112                                                      q_mask);
2113         }
2114         if (ret)
2115                 return ret;
2116
2117         ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2118
2119         iwl_mvm_disable_sta_queues(mvm, vif, sta);
2120
2121         /* If there is a TXQ still marked as reserved - free it */
2122         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2123                 u8 reserved_txq = mvm_sta->reserved_queue;
2124                 enum iwl_mvm_queue_status *status;
2125
2126                 /*
2127                  * If no traffic has gone through the reserved TXQ - it
2128                  * is still marked as IWL_MVM_QUEUE_RESERVED, and
2129                  * should be manually marked as free again
2130                  */
2131                 status = &mvm->queue_info[reserved_txq].status;
2132                 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2133                          (*status != IWL_MVM_QUEUE_FREE),
2134                          "sta_id %d reserved txq %d status %d",
2135                          mvm_sta->deflink.sta_id, reserved_txq, *status))
2136                         return -EINVAL;
2137
2138                 *status = IWL_MVM_QUEUE_FREE;
2139         }
2140
2141         iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink);
2142
2143         ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2144         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2145
2146         return ret;
2147 }
2148
2149 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2150                       struct ieee80211_vif *vif,
2151                       u8 sta_id)
2152 {
2153         int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2154
2155         lockdep_assert_held(&mvm->mutex);
2156
2157         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2158         return ret;
2159 }
2160
2161 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2162                              struct iwl_mvm_int_sta *sta,
2163                              u32 qmask, enum nl80211_iftype iftype,
2164                              u8 type)
2165 {
2166         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2167             sta->sta_id == IWL_INVALID_STA) {
2168                 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2169                 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA))
2170                         return -ENOSPC;
2171         }
2172
2173         sta->tfd_queue_msk = qmask;
2174         sta->type = type;
2175
2176         /* put a non-NULL value so iterating over the stations won't stop */
2177         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2178         return 0;
2179 }
2180
2181 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2182 {
2183         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2184         memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2185         sta->sta_id = IWL_INVALID_STA;
2186 }
2187
2188 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2189                                           u8 sta_id, u8 fifo)
2190 {
2191         unsigned int wdg_timeout =
2192                 mvm->trans->trans_cfg->base_params->wd_timeout;
2193         struct iwl_trans_txq_scd_cfg cfg = {
2194                 .fifo = fifo,
2195                 .sta_id = sta_id,
2196                 .tid = IWL_MAX_TID_COUNT,
2197                 .aggregate = false,
2198                 .frame_limit = IWL_FRAME_LIMIT,
2199         };
2200
2201         WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2202
2203         iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2204 }
2205
2206 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2207 {
2208         unsigned int wdg_timeout =
2209                 mvm->trans->trans_cfg->base_params->wd_timeout;
2210
2211         WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2212
2213         return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2214                                        wdg_timeout);
2215 }
2216
2217 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2218                                           int maccolor, u8 *addr,
2219                                           struct iwl_mvm_int_sta *sta,
2220                                           u16 *queue, int fifo)
2221 {
2222         int ret;
2223
2224         /* Map queue to fifo - needs to happen before adding station */
2225         if (!iwl_mvm_has_new_tx_api(mvm))
2226                 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2227
2228         ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2229         if (ret) {
2230                 if (!iwl_mvm_has_new_tx_api(mvm))
2231                         iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2232                                             IWL_MAX_TID_COUNT);
2233                 return ret;
2234         }
2235
2236         /*
2237          * For 22000 firmware and on we cannot add queue to a station unknown
2238          * to firmware so enable queue here - after the station was added
2239          */
2240         if (iwl_mvm_has_new_tx_api(mvm)) {
2241                 int txq;
2242
2243                 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2244                 if (txq < 0) {
2245                         iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2246                         return txq;
2247                 }
2248
2249                 *queue = txq;
2250         }
2251
2252         return 0;
2253 }
2254
2255 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2256 {
2257         int ret;
2258         u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2259                 BIT(mvm->aux_queue);
2260
2261         lockdep_assert_held(&mvm->mutex);
2262
2263         /* Allocate aux station and assign to it the aux queue */
2264         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2265                                        NL80211_IFTYPE_UNSPECIFIED,
2266                                        IWL_STA_AUX_ACTIVITY);
2267         if (ret)
2268                 return ret;
2269
2270         /*
2271          * In CDB NICs we need to specify which lmac to use for aux activity
2272          * using the mac_id argument place to send lmac_id to the function
2273          */
2274         ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2275                                              &mvm->aux_sta, &mvm->aux_queue,
2276                                              IWL_MVM_TX_FIFO_MCAST);
2277         if (ret) {
2278                 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2279                 return ret;
2280         }
2281
2282         return 0;
2283 }
2284
2285 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2286 {
2287         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2288
2289         lockdep_assert_held(&mvm->mutex);
2290
2291         return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2292                                               NULL, &mvm->snif_sta,
2293                                               &mvm->snif_queue,
2294                                               IWL_MVM_TX_FIFO_BE);
2295 }
2296
2297 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2298 {
2299         int ret;
2300
2301         lockdep_assert_held(&mvm->mutex);
2302
2303         if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA))
2304                 return -EINVAL;
2305
2306         iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2307                             &mvm->snif_queue, IWL_MAX_TID_COUNT);
2308         ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2309         if (ret)
2310                 IWL_WARN(mvm, "Failed sending remove station\n");
2311
2312         return ret;
2313 }
2314
2315 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2316 {
2317         int ret;
2318
2319         lockdep_assert_held(&mvm->mutex);
2320
2321         if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA))
2322                 return -EINVAL;
2323
2324         iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2325                             &mvm->aux_queue, IWL_MAX_TID_COUNT);
2326         ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2327         if (ret)
2328                 IWL_WARN(mvm, "Failed sending remove station\n");
2329         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2330
2331         return ret;
2332 }
2333
2334 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2335 {
2336         iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2337 }
2338
2339 /*
2340  * Send the add station command for the vif's broadcast station.
2341  * Assumes that the station was already allocated.
2342  *
2343  * @mvm: the mvm component
2344  * @vif: the interface to which the broadcast station is added
2345  * @bsta: the broadcast station to add.
2346  */
2347 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2348 {
2349         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2350         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2351         static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2352         const u8 *baddr = _baddr;
2353         int queue;
2354         int ret;
2355         unsigned int wdg_timeout =
2356                 iwl_mvm_get_wd_timeout(mvm, vif);
2357         struct iwl_trans_txq_scd_cfg cfg = {
2358                 .fifo = IWL_MVM_TX_FIFO_VO,
2359                 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2360                 .tid = IWL_MAX_TID_COUNT,
2361                 .aggregate = false,
2362                 .frame_limit = IWL_FRAME_LIMIT,
2363         };
2364
2365         lockdep_assert_held(&mvm->mutex);
2366
2367         if (!iwl_mvm_has_new_tx_api(mvm)) {
2368                 if (vif->type == NL80211_IFTYPE_AP ||
2369                     vif->type == NL80211_IFTYPE_ADHOC) {
2370                         queue = mvm->probe_queue;
2371                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2372                         queue = mvm->p2p_dev_queue;
2373                 } else {
2374                         WARN(1, "Missing required TXQ for adding bcast STA\n");
2375                         return -EINVAL;
2376                 }
2377
2378                 bsta->tfd_queue_msk |= BIT(queue);
2379
2380                 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2381         }
2382
2383         if (vif->type == NL80211_IFTYPE_ADHOC)
2384                 baddr = vif->bss_conf.bssid;
2385
2386         if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA))
2387                 return -ENOSPC;
2388
2389         ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2390                                          mvmvif->id, mvmvif->color);
2391         if (ret)
2392                 return ret;
2393
2394         /*
2395          * For 22000 firmware and on we cannot add queue to a station unknown
2396          * to firmware so enable queue here - after the station was added
2397          */
2398         if (iwl_mvm_has_new_tx_api(mvm)) {
2399                 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2400                                                 IWL_MAX_TID_COUNT,
2401                                                 wdg_timeout);
2402                 if (queue < 0) {
2403                         iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2404                         return queue;
2405                 }
2406
2407                 if (vif->type == NL80211_IFTYPE_AP ||
2408                     vif->type == NL80211_IFTYPE_ADHOC) {
2409                         /* for queue management */
2410                         mvm->probe_queue = queue;
2411                         /* for use in TX */
2412                         mvmvif->deflink.mgmt_queue = queue;
2413                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2414                         mvm->p2p_dev_queue = queue;
2415                 }
2416         } else if (vif->type == NL80211_IFTYPE_AP ||
2417                    vif->type == NL80211_IFTYPE_ADHOC) {
2418                 /* set it for use in TX */
2419                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2420         }
2421
2422         return 0;
2423 }
2424
2425 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2426                                    struct ieee80211_vif *vif)
2427 {
2428         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2429         u16 *queueptr, queue;
2430
2431         lockdep_assert_held(&mvm->mutex);
2432
2433         iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2434                           mvmvif->deflink.bcast_sta.tfd_queue_msk);
2435
2436         switch (vif->type) {
2437         case NL80211_IFTYPE_AP:
2438         case NL80211_IFTYPE_ADHOC:
2439                 queueptr = &mvm->probe_queue;
2440                 break;
2441         case NL80211_IFTYPE_P2P_DEVICE:
2442                 queueptr = &mvm->p2p_dev_queue;
2443                 break;
2444         default:
2445                 WARN(1, "Can't free bcast queue on vif type %d\n",
2446                      vif->type);
2447                 return;
2448         }
2449
2450         queue = *queueptr;
2451         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2452                             queueptr, IWL_MAX_TID_COUNT);
2453
2454         if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2455                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2456
2457         if (iwl_mvm_has_new_tx_api(mvm))
2458                 return;
2459
2460         WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2461         mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2462 }
2463
2464 /* Send the FW a request to remove the station from it's internal data
2465  * structures, but DO NOT remove the entry from the local data structures. */
2466 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2467 {
2468         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2469         int ret;
2470
2471         lockdep_assert_held(&mvm->mutex);
2472
2473         iwl_mvm_free_bcast_sta_queues(mvm, vif);
2474
2475         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2476         if (ret)
2477                 IWL_WARN(mvm, "Failed sending remove station\n");
2478         return ret;
2479 }
2480
2481 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2482 {
2483         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2484
2485         lockdep_assert_held(&mvm->mutex);
2486
2487         return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2488                                         ieee80211_vif_type_p2p(vif),
2489                                         IWL_STA_GENERAL_PURPOSE);
2490 }
2491
2492 /* Allocate a new station entry for the broadcast station to the given vif,
2493  * and send it to the FW.
2494  * Note that each P2P mac should have its own broadcast station.
2495  *
2496  * @mvm: the mvm component
2497  * @vif: the interface to which the broadcast station is added
2498  * @bsta: the broadcast station to add. */
2499 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2500 {
2501         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2502         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2503         int ret;
2504
2505         lockdep_assert_held(&mvm->mutex);
2506
2507         ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2508         if (ret)
2509                 return ret;
2510
2511         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2512
2513         if (ret)
2514                 iwl_mvm_dealloc_int_sta(mvm, bsta);
2515
2516         return ret;
2517 }
2518
2519 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2520 {
2521         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2522
2523         iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2524 }
2525
2526 /*
2527  * Send the FW a request to remove the station from it's internal data
2528  * structures, and in addition remove it from the local data structure.
2529  */
2530 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2531 {
2532         int ret;
2533
2534         lockdep_assert_held(&mvm->mutex);
2535
2536         ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2537
2538         iwl_mvm_dealloc_bcast_sta(mvm, vif);
2539
2540         return ret;
2541 }
2542
2543 /*
2544  * Allocate a new station entry for the multicast station to the given vif,
2545  * and send it to the FW.
2546  * Note that each AP/GO mac should have its own multicast station.
2547  *
2548  * @mvm: the mvm component
2549  * @vif: the interface to which the multicast station is added
2550  */
2551 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2552 {
2553         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2554         struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2555         static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2556         const u8 *maddr = _maddr;
2557         struct iwl_trans_txq_scd_cfg cfg = {
2558                 .fifo = vif->type == NL80211_IFTYPE_AP ?
2559                         IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2560                 .sta_id = msta->sta_id,
2561                 .tid = 0,
2562                 .aggregate = false,
2563                 .frame_limit = IWL_FRAME_LIMIT,
2564         };
2565         unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif);
2566         int ret;
2567
2568         lockdep_assert_held(&mvm->mutex);
2569
2570         if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2571                     vif->type != NL80211_IFTYPE_ADHOC))
2572                 return -EOPNOTSUPP;
2573
2574         /*
2575          * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2576          * invalid, so make sure we use the queue we want.
2577          * Note that this is done here as we want to avoid making DQA
2578          * changes in mac80211 layer.
2579          */
2580         if (vif->type == NL80211_IFTYPE_ADHOC)
2581                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2582
2583         /*
2584          * While in previous FWs we had to exclude cab queue from TFD queue
2585          * mask, now it is needed as any other queue.
2586          */
2587         if (!iwl_mvm_has_new_tx_api(mvm) &&
2588             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2589                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2590                                    &cfg,
2591                                    timeout);
2592                 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2593         }
2594         ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2595                                          mvmvif->id, mvmvif->color);
2596         if (ret)
2597                 goto err;
2598
2599         /*
2600          * Enable cab queue after the ADD_STA command is sent.
2601          * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2602          * command with unknown station id, and for FW that doesn't support
2603          * station API since the cab queue is not included in the
2604          * tfd_queue_mask.
2605          */
2606         if (iwl_mvm_has_new_tx_api(mvm)) {
2607                 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2608                                                     0, timeout);
2609                 if (queue < 0) {
2610                         ret = queue;
2611                         goto err;
2612                 }
2613                 mvmvif->deflink.cab_queue = queue;
2614         } else if (!fw_has_api(&mvm->fw->ucode_capa,
2615                                IWL_UCODE_TLV_API_STA_TYPE))
2616                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2617                                    &cfg,
2618                                    timeout);
2619
2620         return 0;
2621 err:
2622         iwl_mvm_dealloc_int_sta(mvm, msta);
2623         return ret;
2624 }
2625
2626 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2627                                     struct ieee80211_key_conf *keyconf,
2628                                     bool mcast)
2629 {
2630         union {
2631                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2632                 struct iwl_mvm_add_sta_key_cmd cmd;
2633         } u = {};
2634         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2635                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2636         __le16 key_flags;
2637         int ret, size;
2638         u32 status;
2639
2640         /* This is a valid situation for GTK removal */
2641         if (sta_id == IWL_INVALID_STA)
2642                 return 0;
2643
2644         key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2645                                  STA_KEY_FLG_KEYID_MSK);
2646         key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2647         key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2648
2649         if (mcast)
2650                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2651
2652         /*
2653          * The fields assigned here are in the same location at the start
2654          * of the command, so we can do this union trick.
2655          */
2656         u.cmd.common.key_flags = key_flags;
2657         u.cmd.common.key_offset = keyconf->hw_key_idx;
2658         u.cmd.common.sta_id = sta_id;
2659
2660         size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2661
2662         status = ADD_STA_SUCCESS;
2663         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2664                                           &status);
2665
2666         switch (status) {
2667         case ADD_STA_SUCCESS:
2668                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2669                 break;
2670         default:
2671                 ret = -EIO;
2672                 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2673                 break;
2674         }
2675
2676         return ret;
2677 }
2678
2679 /*
2680  * Send the FW a request to remove the station from it's internal data
2681  * structures, and in addition remove it from the local data structure.
2682  */
2683 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2684 {
2685         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2686         int ret;
2687
2688         lockdep_assert_held(&mvm->mutex);
2689
2690         iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2691                           mvmvif->deflink.mcast_sta.tfd_queue_msk);
2692
2693         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2694                             &mvmvif->deflink.cab_queue, 0);
2695
2696         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2697         if (ret)
2698                 IWL_WARN(mvm, "Failed sending remove station\n");
2699
2700         return ret;
2701 }
2702
2703 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2704 {
2705         struct iwl_mvm_delba_data notif = {
2706                 .baid = baid,
2707         };
2708
2709         iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2710                                         &notif, sizeof(notif));
2711 };
2712
2713 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2714                                  struct iwl_mvm_baid_data *data)
2715 {
2716         int i;
2717
2718         iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2719
2720         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2721                 int j;
2722                 struct iwl_mvm_reorder_buffer *reorder_buf =
2723                         &data->reorder_buf[i];
2724                 struct iwl_mvm_reorder_buf_entry *entries =
2725                         &data->entries[i * data->entries_per_queue];
2726
2727                 spin_lock_bh(&reorder_buf->lock);
2728                 if (likely(!reorder_buf->num_stored)) {
2729                         spin_unlock_bh(&reorder_buf->lock);
2730                         continue;
2731                 }
2732
2733                 /*
2734                  * This shouldn't happen in regular DELBA since the internal
2735                  * delBA notification should trigger a release of all frames in
2736                  * the reorder buffer.
2737                  */
2738                 WARN_ON(1);
2739
2740                 for (j = 0; j < data->buf_size; j++)
2741                         __skb_queue_purge(&entries[j].frames);
2742
2743                 spin_unlock_bh(&reorder_buf->lock);
2744         }
2745 }
2746
2747 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2748                                         struct iwl_mvm_baid_data *data,
2749                                         u16 ssn)
2750 {
2751         int i;
2752
2753         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2754                 struct iwl_mvm_reorder_buffer *reorder_buf =
2755                         &data->reorder_buf[i];
2756                 struct iwl_mvm_reorder_buf_entry *entries =
2757                         &data->entries[i * data->entries_per_queue];
2758                 int j;
2759
2760                 reorder_buf->num_stored = 0;
2761                 reorder_buf->head_sn = ssn;
2762                 spin_lock_init(&reorder_buf->lock);
2763                 reorder_buf->queue = i;
2764                 reorder_buf->valid = false;
2765                 for (j = 0; j < data->buf_size; j++)
2766                         __skb_queue_head_init(&entries[j].frames);
2767         }
2768 }
2769
2770 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2771                                   struct ieee80211_sta *sta,
2772                                   bool start, int tid, u16 ssn,
2773                                   u16 buf_size)
2774 {
2775         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2776         struct iwl_mvm_add_sta_cmd cmd = {
2777                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2778                 .sta_id = mvm_sta->deflink.sta_id,
2779                 .add_modify = STA_MODE_MODIFY,
2780         };
2781         u32 status;
2782         int ret;
2783
2784         if (start) {
2785                 cmd.add_immediate_ba_tid = tid;
2786                 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2787                 cmd.rx_ba_window = cpu_to_le16(buf_size);
2788                 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2789         } else {
2790                 cmd.remove_immediate_ba_tid = tid;
2791                 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2792         }
2793
2794         status = ADD_STA_SUCCESS;
2795         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2796                                           iwl_mvm_add_sta_cmd_size(mvm),
2797                                           &cmd, &status);
2798         if (ret)
2799                 return ret;
2800
2801         switch (status & IWL_ADD_STA_STATUS_MASK) {
2802         case ADD_STA_SUCCESS:
2803                 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2804                              start ? "start" : "stopp");
2805                 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2806                             !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2807                         return -EINVAL;
2808                 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2809         case ADD_STA_IMMEDIATE_BA_FAILURE:
2810                 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2811                 return -ENOSPC;
2812         default:
2813                 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2814                         start ? "start" : "stopp", status);
2815                 return -EIO;
2816         }
2817 }
2818
2819 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2820                                   struct ieee80211_sta *sta,
2821                                   bool start, int tid, u16 ssn,
2822                                   u16 buf_size, int baid)
2823 {
2824         struct iwl_rx_baid_cfg_cmd cmd = {
2825                 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2826                                   cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2827         };
2828         struct iwl_host_cmd hcmd = {
2829                 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD),
2830                 .flags = CMD_SEND_IN_RFKILL,
2831                 .len[0] = sizeof(cmd),
2832                 .data[0] = &cmd,
2833         };
2834         int ret;
2835
2836         BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2837
2838         if (start) {
2839                 cmd.alloc.sta_id_mask =
2840                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2841                 cmd.alloc.tid = tid;
2842                 cmd.alloc.ssn = cpu_to_le16(ssn);
2843                 cmd.alloc.win_size = cpu_to_le16(buf_size);
2844                 baid = -EIO;
2845         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) {
2846                 cmd.remove_v1.baid = cpu_to_le32(baid);
2847                 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2848         } else {
2849                 cmd.remove.sta_id_mask =
2850                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2851                 cmd.remove.tid = cpu_to_le32(tid);
2852         }
2853
2854         ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid);
2855         if (ret)
2856                 return ret;
2857
2858         if (!start) {
2859                 /* ignore firmware baid on remove */
2860                 baid = 0;
2861         }
2862
2863         IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2864                      start ? "start" : "stopp");
2865
2866         if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2867                 return -EINVAL;
2868
2869         return baid;
2870 }
2871
2872 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2873                               bool start, int tid, u16 ssn, u16 buf_size,
2874                               int baid)
2875 {
2876         if (fw_has_capa(&mvm->fw->ucode_capa,
2877                         IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2878                 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2879                                               tid, ssn, buf_size, baid);
2880
2881         return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2882                                       tid, ssn, buf_size);
2883 }
2884
2885 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2886                        int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2887 {
2888         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2889         struct iwl_mvm_baid_data *baid_data = NULL;
2890         int ret, baid;
2891         u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2892                                                                IWL_MAX_BAID_OLD;
2893
2894         lockdep_assert_held(&mvm->mutex);
2895
2896         if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2897                 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2898                 return -ENOSPC;
2899         }
2900
2901         if (iwl_mvm_has_new_rx_api(mvm) && start) {
2902                 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2903
2904                 /* sparse doesn't like the __align() so don't check */
2905 #ifndef __CHECKER__
2906                 /*
2907                  * The division below will be OK if either the cache line size
2908                  * can be divided by the entry size (ALIGN will round up) or if
2909                  * the entry size can be divided by the cache line size, in
2910                  * which case the ALIGN() will do nothing.
2911                  */
2912                 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2913                              sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2914 #endif
2915
2916                 /*
2917                  * Upward align the reorder buffer size to fill an entire cache
2918                  * line for each queue, to avoid sharing cache lines between
2919                  * different queues.
2920                  */
2921                 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2922
2923                 /*
2924                  * Allocate here so if allocation fails we can bail out early
2925                  * before starting the BA session in the firmware
2926                  */
2927                 baid_data = kzalloc(sizeof(*baid_data) +
2928                                     mvm->trans->num_rx_queues *
2929                                     reorder_buf_size,
2930                                     GFP_KERNEL);
2931                 if (!baid_data)
2932                         return -ENOMEM;
2933
2934                 /*
2935                  * This division is why we need the above BUILD_BUG_ON(),
2936                  * if that doesn't hold then this will not be right.
2937                  */
2938                 baid_data->entries_per_queue =
2939                         reorder_buf_size / sizeof(baid_data->entries[0]);
2940         }
2941
2942         if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2943                 baid = mvm_sta->tid_to_baid[tid];
2944         } else {
2945                 /* we don't really need it in this case */
2946                 baid = -1;
2947         }
2948
2949         /* Don't send command to remove (start=0) BAID during restart */
2950         if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2951                 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2952                                           baid);
2953
2954         if (baid < 0) {
2955                 ret = baid;
2956                 goto out_free;
2957         }
2958
2959         if (start) {
2960                 mvm->rx_ba_sessions++;
2961
2962                 if (!iwl_mvm_has_new_rx_api(mvm))
2963                         return 0;
2964
2965                 baid_data->baid = baid;
2966                 baid_data->timeout = timeout;
2967                 baid_data->last_rx = jiffies;
2968                 baid_data->rcu_ptr = &mvm->baid_map[baid];
2969                 timer_setup(&baid_data->session_timer,
2970                             iwl_mvm_rx_agg_session_expired, 0);
2971                 baid_data->mvm = mvm;
2972                 baid_data->tid = tid;
2973                 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2974                 baid_data->buf_size = buf_size;
2975
2976                 mvm_sta->tid_to_baid[tid] = baid;
2977                 if (timeout)
2978                         mod_timer(&baid_data->session_timer,
2979                                   TU_TO_EXP_TIME(timeout * 2));
2980
2981                 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn);
2982                 /*
2983                  * protect the BA data with RCU to cover a case where our
2984                  * internal RX sync mechanism will timeout (not that it's
2985                  * supposed to happen) and we will free the session data while
2986                  * RX is being processed in parallel
2987                  */
2988                 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2989                              mvm_sta->deflink.sta_id, tid, baid);
2990                 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2991                 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2992         } else  {
2993                 baid = mvm_sta->tid_to_baid[tid];
2994
2995                 if (mvm->rx_ba_sessions > 0)
2996                         /* check that restart flow didn't zero the counter */
2997                         mvm->rx_ba_sessions--;
2998                 if (!iwl_mvm_has_new_rx_api(mvm))
2999                         return 0;
3000
3001                 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
3002                         return -EINVAL;
3003
3004                 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
3005                 if (WARN_ON(!baid_data))
3006                         return -EINVAL;
3007
3008                 /* synchronize all rx queues so we can safely delete */
3009                 iwl_mvm_free_reorder(mvm, baid_data);
3010                 timer_shutdown_sync(&baid_data->session_timer);
3011                 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
3012                 kfree_rcu(baid_data, rcu_head);
3013                 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3014         }
3015         return 0;
3016
3017 out_free:
3018         kfree(baid_data);
3019         return ret;
3020 }
3021
3022 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3023                        int tid, u8 queue, bool start)
3024 {
3025         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3026         struct iwl_mvm_add_sta_cmd cmd = {};
3027         int ret;
3028         u32 status;
3029
3030         lockdep_assert_held(&mvm->mutex);
3031
3032         if (start) {
3033                 mvm_sta->tfd_queue_msk |= BIT(queue);
3034                 mvm_sta->tid_disable_agg &= ~BIT(tid);
3035         } else {
3036                 /* In DQA-mode the queue isn't removed on agg termination */
3037                 mvm_sta->tid_disable_agg |= BIT(tid);
3038         }
3039
3040         cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3041         cmd.sta_id = mvm_sta->deflink.sta_id;
3042         cmd.add_modify = STA_MODE_MODIFY;
3043         if (!iwl_mvm_has_new_tx_api(mvm))
3044                 cmd.modify_mask = STA_MODIFY_QUEUES;
3045         cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3046         cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3047         cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3048
3049         status = ADD_STA_SUCCESS;
3050         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3051                                           iwl_mvm_add_sta_cmd_size(mvm),
3052                                           &cmd, &status);
3053         if (ret)
3054                 return ret;
3055
3056         switch (status & IWL_ADD_STA_STATUS_MASK) {
3057         case ADD_STA_SUCCESS:
3058                 break;
3059         default:
3060                 ret = -EIO;
3061                 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3062                         start ? "start" : "stopp", status);
3063                 break;
3064         }
3065
3066         return ret;
3067 }
3068
3069 const u8 tid_to_mac80211_ac[] = {
3070         IEEE80211_AC_BE,
3071         IEEE80211_AC_BK,
3072         IEEE80211_AC_BK,
3073         IEEE80211_AC_BE,
3074         IEEE80211_AC_VI,
3075         IEEE80211_AC_VI,
3076         IEEE80211_AC_VO,
3077         IEEE80211_AC_VO,
3078         IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3079 };
3080
3081 static const u8 tid_to_ucode_ac[] = {
3082         AC_BE,
3083         AC_BK,
3084         AC_BK,
3085         AC_BE,
3086         AC_VI,
3087         AC_VI,
3088         AC_VO,
3089         AC_VO,
3090 };
3091
3092 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3093                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3094 {
3095         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3096         struct iwl_mvm_tid_data *tid_data;
3097         u16 normalized_ssn;
3098         u16 txq_id;
3099         int ret;
3100
3101         if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3102                 return -EINVAL;
3103
3104         if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3105             mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3106                 IWL_ERR(mvm,
3107                         "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3108                         mvmsta->tid_data[tid].state);
3109                 return -ENXIO;
3110         }
3111
3112         lockdep_assert_held(&mvm->mutex);
3113
3114         if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3115             iwl_mvm_has_new_tx_api(mvm)) {
3116                 u8 ac = tid_to_mac80211_ac[tid];
3117
3118                 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3119                 if (ret)
3120                         return ret;
3121         }
3122
3123         spin_lock_bh(&mvmsta->lock);
3124
3125         /*
3126          * Note the possible cases:
3127          *  1. An enabled TXQ - TXQ needs to become agg'ed
3128          *  2. The TXQ hasn't yet been enabled, so find a free one and mark
3129          *      it as reserved
3130          */
3131         txq_id = mvmsta->tid_data[tid].txq_id;
3132         if (txq_id == IWL_MVM_INVALID_QUEUE) {
3133                 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3134                                               IWL_MVM_DQA_MIN_DATA_QUEUE,
3135                                               IWL_MVM_DQA_MAX_DATA_QUEUE);
3136                 if (ret < 0) {
3137                         IWL_ERR(mvm, "Failed to allocate agg queue\n");
3138                         goto out;
3139                 }
3140
3141                 txq_id = ret;
3142
3143                 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3144                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3145         } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3146                 ret = -ENXIO;
3147                 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3148                         tid, IWL_MAX_HW_QUEUES - 1);
3149                 goto out;
3150
3151         } else if (unlikely(mvm->queue_info[txq_id].status ==
3152                             IWL_MVM_QUEUE_SHARED)) {
3153                 ret = -ENXIO;
3154                 IWL_DEBUG_TX_QUEUES(mvm,
3155                                     "Can't start tid %d agg on shared queue!\n",
3156                                     tid);
3157                 goto out;
3158         }
3159
3160         IWL_DEBUG_TX_QUEUES(mvm,
3161                             "AGG for tid %d will be on queue #%d\n",
3162                             tid, txq_id);
3163
3164         tid_data = &mvmsta->tid_data[tid];
3165         tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3166         tid_data->txq_id = txq_id;
3167         *ssn = tid_data->ssn;
3168
3169         IWL_DEBUG_TX_QUEUES(mvm,
3170                             "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3171                             mvmsta->deflink.sta_id, tid, txq_id,
3172                             tid_data->ssn,
3173                             tid_data->next_reclaimed);
3174
3175         /*
3176          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3177          * to align the wrap around of ssn so we compare relevant values.
3178          */
3179         normalized_ssn = tid_data->ssn;
3180         if (mvm->trans->trans_cfg->gen2)
3181                 normalized_ssn &= 0xff;
3182
3183         if (normalized_ssn == tid_data->next_reclaimed) {
3184                 tid_data->state = IWL_AGG_STARTING;
3185                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3186         } else {
3187                 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3188                 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3189         }
3190
3191 out:
3192         spin_unlock_bh(&mvmsta->lock);
3193
3194         return ret;
3195 }
3196
3197 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3198                             struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3199                             bool amsdu)
3200 {
3201         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3202         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3203         unsigned int wdg_timeout =
3204                 iwl_mvm_get_wd_timeout(mvm, vif);
3205         int queue, ret;
3206         bool alloc_queue = true;
3207         enum iwl_mvm_queue_status queue_status;
3208         u16 ssn;
3209
3210         struct iwl_trans_txq_scd_cfg cfg = {
3211                 .sta_id = mvmsta->deflink.sta_id,
3212                 .tid = tid,
3213                 .frame_limit = buf_size,
3214                 .aggregate = true,
3215         };
3216
3217         /*
3218          * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3219          * manager, so this function should never be called in this case.
3220          */
3221         if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3222                 return -EINVAL;
3223
3224         BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3225                      != IWL_MAX_TID_COUNT);
3226
3227         spin_lock_bh(&mvmsta->lock);
3228         ssn = tid_data->ssn;
3229         queue = tid_data->txq_id;
3230         tid_data->state = IWL_AGG_ON;
3231         mvmsta->agg_tids |= BIT(tid);
3232         tid_data->ssn = 0xffff;
3233         tid_data->amsdu_in_ampdu_allowed = amsdu;
3234         spin_unlock_bh(&mvmsta->lock);
3235
3236         if (iwl_mvm_has_new_tx_api(mvm)) {
3237                 /*
3238                  * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3239                  * would have failed, so if we are here there is no need to
3240                  * allocate a queue.
3241                  * However, if aggregation size is different than the default
3242                  * size, the scheduler should be reconfigured.
3243                  * We cannot do this with the new TX API, so return unsupported
3244                  * for now, until it will be offloaded to firmware..
3245                  * Note that if SCD default value changes - this condition
3246                  * should be updated as well.
3247                  */
3248                 if (buf_size < IWL_FRAME_LIMIT)
3249                         return -EOPNOTSUPP;
3250
3251                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3252                 if (ret)
3253                         return -EIO;
3254                 goto out;
3255         }
3256
3257         cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3258
3259         queue_status = mvm->queue_info[queue].status;
3260
3261         /* Maybe there is no need to even alloc a queue... */
3262         if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3263                 alloc_queue = false;
3264
3265         /*
3266          * Only reconfig the SCD for the queue if the window size has
3267          * changed from current (become smaller)
3268          */
3269         if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3270                 /*
3271                  * If reconfiguring an existing queue, it first must be
3272                  * drained
3273                  */
3274                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3275                                                      BIT(queue));
3276                 if (ret) {
3277                         IWL_ERR(mvm,
3278                                 "Error draining queue before reconfig\n");
3279                         return ret;
3280                 }
3281
3282                 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3283                                            mvmsta->deflink.sta_id, tid,
3284                                            buf_size, ssn);
3285                 if (ret) {
3286                         IWL_ERR(mvm,
3287                                 "Error reconfiguring TXQ #%d\n", queue);
3288                         return ret;
3289                 }
3290         }
3291
3292         if (alloc_queue)
3293                 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3294                                    &cfg, wdg_timeout);
3295
3296         /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3297         if (queue_status != IWL_MVM_QUEUE_SHARED) {
3298                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3299                 if (ret)
3300                         return -EIO;
3301         }
3302
3303         /* No need to mark as reserved */
3304         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3305
3306 out:
3307         /*
3308          * Even though in theory the peer could have different
3309          * aggregation reorder buffer sizes for different sessions,
3310          * our ucode doesn't allow for that and has a global limit
3311          * for each station. Therefore, use the minimum of all the
3312          * aggregation sessions and our default value.
3313          */
3314         mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3315                 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3316                     buf_size);
3317         mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3318                 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3319
3320         IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3321                      sta->addr, tid);
3322
3323         return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3324 }
3325
3326 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3327                                         struct iwl_mvm_sta *mvmsta,
3328                                         struct iwl_mvm_tid_data *tid_data)
3329 {
3330         u16 txq_id = tid_data->txq_id;
3331
3332         lockdep_assert_held(&mvm->mutex);
3333
3334         if (iwl_mvm_has_new_tx_api(mvm))
3335                 return;
3336
3337         /*
3338          * The TXQ is marked as reserved only if no traffic came through yet
3339          * This means no traffic has been sent on this TID (agg'd or not), so
3340          * we no longer have use for the queue. Since it hasn't even been
3341          * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3342          * free.
3343          */
3344         if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3345                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3346                 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3347         }
3348 }
3349
3350 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3351                             struct ieee80211_sta *sta, u16 tid)
3352 {
3353         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3354         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3355         u16 txq_id;
3356         int err;
3357
3358         /*
3359          * If mac80211 is cleaning its state, then say that we finished since
3360          * our state has been cleared anyway.
3361          */
3362         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3363                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3364                 return 0;
3365         }
3366
3367         spin_lock_bh(&mvmsta->lock);
3368
3369         txq_id = tid_data->txq_id;
3370
3371         IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3372                             mvmsta->deflink.sta_id, tid, txq_id,
3373                             tid_data->state);
3374
3375         mvmsta->agg_tids &= ~BIT(tid);
3376
3377         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3378
3379         switch (tid_data->state) {
3380         case IWL_AGG_ON:
3381                 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3382
3383                 IWL_DEBUG_TX_QUEUES(mvm,
3384                                     "ssn = %d, next_recl = %d\n",
3385                                     tid_data->ssn, tid_data->next_reclaimed);
3386
3387                 tid_data->ssn = 0xffff;
3388                 tid_data->state = IWL_AGG_OFF;
3389                 spin_unlock_bh(&mvmsta->lock);
3390
3391                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3392
3393                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3394                 return 0;
3395         case IWL_AGG_STARTING:
3396         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3397                 /*
3398                  * The agg session has been stopped before it was set up. This
3399                  * can happen when the AddBA timer times out for example.
3400                  */
3401
3402                 /* No barriers since we are under mutex */
3403                 lockdep_assert_held(&mvm->mutex);
3404
3405                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3406                 tid_data->state = IWL_AGG_OFF;
3407                 err = 0;
3408                 break;
3409         default:
3410                 IWL_ERR(mvm,
3411                         "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3412                         mvmsta->deflink.sta_id, tid, tid_data->state);
3413                 IWL_ERR(mvm,
3414                         "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3415                 err = -EINVAL;
3416         }
3417
3418         spin_unlock_bh(&mvmsta->lock);
3419
3420         return err;
3421 }
3422
3423 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3424                             struct ieee80211_sta *sta, u16 tid)
3425 {
3426         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3427         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3428         u16 txq_id;
3429         enum iwl_mvm_agg_state old_state;
3430
3431         /*
3432          * First set the agg state to OFF to avoid calling
3433          * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3434          */
3435         spin_lock_bh(&mvmsta->lock);
3436         txq_id = tid_data->txq_id;
3437         IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3438                             mvmsta->deflink.sta_id, tid, txq_id,
3439                             tid_data->state);
3440         old_state = tid_data->state;
3441         tid_data->state = IWL_AGG_OFF;
3442         mvmsta->agg_tids &= ~BIT(tid);
3443         spin_unlock_bh(&mvmsta->lock);
3444
3445         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3446
3447         if (old_state >= IWL_AGG_ON) {
3448                 iwl_mvm_drain_sta(mvm, mvmsta, true);
3449
3450                 if (iwl_mvm_has_new_tx_api(mvm)) {
3451                         if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3452                                                    BIT(tid)))
3453                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3454                         iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3455                 } else {
3456                         if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3457                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3458                         iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3459                 }
3460
3461                 iwl_mvm_drain_sta(mvm, mvmsta, false);
3462
3463                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3464         }
3465
3466         return 0;
3467 }
3468
3469 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3470 {
3471         int i, max = -1, max_offs = -1;
3472
3473         lockdep_assert_held(&mvm->mutex);
3474
3475         /* Pick the unused key offset with the highest 'deleted'
3476          * counter. Every time a key is deleted, all the counters
3477          * are incremented and the one that was just deleted is
3478          * reset to zero. Thus, the highest counter is the one
3479          * that was deleted longest ago. Pick that one.
3480          */
3481         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3482                 if (test_bit(i, mvm->fw_key_table))
3483                         continue;
3484                 if (mvm->fw_key_deleted[i] > max) {
3485                         max = mvm->fw_key_deleted[i];
3486                         max_offs = i;
3487                 }
3488         }
3489
3490         if (max_offs < 0)
3491                 return STA_KEY_IDX_INVALID;
3492
3493         return max_offs;
3494 }
3495
3496 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3497                                                struct ieee80211_vif *vif,
3498                                                struct ieee80211_sta *sta)
3499 {
3500         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3501
3502         if (sta)
3503                 return iwl_mvm_sta_from_mac80211(sta);
3504
3505         /*
3506          * The device expects GTKs for station interfaces to be
3507          * installed as GTKs for the AP station. If we have no
3508          * station ID, then use AP's station ID.
3509          */
3510         if (vif->type == NL80211_IFTYPE_STATION &&
3511             mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3512                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3513
3514                 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3515                                             lockdep_is_held(&mvm->mutex));
3516
3517                 /*
3518                  * It is possible that the 'sta' parameter is NULL,
3519                  * for example when a GTK is removed - the sta_id will then
3520                  * be the AP ID, and no station was passed by mac80211.
3521                  */
3522                 if (IS_ERR_OR_NULL(sta))
3523                         return NULL;
3524
3525                 return iwl_mvm_sta_from_mac80211(sta);
3526         }
3527
3528         return NULL;
3529 }
3530
3531 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3532 {
3533         int i;
3534
3535         for (i = len - 1; i >= 0; i--) {
3536                 if (pn1[i] > pn2[i])
3537                         return 1;
3538                 if (pn1[i] < pn2[i])
3539                         return -1;
3540         }
3541
3542         return 0;
3543 }
3544
3545 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3546                                 u32 sta_id,
3547                                 struct ieee80211_key_conf *key, bool mcast,
3548                                 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3549                                 u8 key_offset, bool mfp)
3550 {
3551         union {
3552                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3553                 struct iwl_mvm_add_sta_key_cmd cmd;
3554         } u = {};
3555         __le16 key_flags;
3556         int ret;
3557         u32 status;
3558         u16 keyidx;
3559         u64 pn = 0;
3560         int i, size;
3561         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3562                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3563         int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3564                                             new_api ? 2 : 1);
3565
3566         if (sta_id == IWL_INVALID_STA)
3567                 return -EINVAL;
3568
3569         keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3570                  STA_KEY_FLG_KEYID_MSK;
3571         key_flags = cpu_to_le16(keyidx);
3572         key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3573
3574         if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
3575                 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);
3576
3577         switch (key->cipher) {
3578         case WLAN_CIPHER_SUITE_TKIP:
3579                 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3580                 if (api_ver >= 2) {
3581                         memcpy((void *)&u.cmd.tx_mic_key,
3582                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3583                                IWL_MIC_KEY_SIZE);
3584
3585                         memcpy((void *)&u.cmd.rx_mic_key,
3586                                &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3587                                IWL_MIC_KEY_SIZE);
3588                         pn = atomic64_read(&key->tx_pn);
3589
3590                 } else {
3591                         u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3592                         for (i = 0; i < 5; i++)
3593                                 u.cmd_v1.tkip_rx_ttak[i] =
3594                                         cpu_to_le16(tkip_p1k[i]);
3595                 }
3596                 memcpy(u.cmd.common.key, key->key, key->keylen);
3597                 break;
3598         case WLAN_CIPHER_SUITE_CCMP:
3599                 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3600                 memcpy(u.cmd.common.key, key->key, key->keylen);
3601                 if (api_ver >= 2)
3602                         pn = atomic64_read(&key->tx_pn);
3603                 break;
3604         case WLAN_CIPHER_SUITE_WEP104:
3605                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3606                 fallthrough;
3607         case WLAN_CIPHER_SUITE_WEP40:
3608                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3609                 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3610                 break;
3611         case WLAN_CIPHER_SUITE_GCMP_256:
3612                 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3613                 fallthrough;
3614         case WLAN_CIPHER_SUITE_GCMP:
3615                 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3616                 memcpy(u.cmd.common.key, key->key, key->keylen);
3617                 if (api_ver >= 2)
3618                         pn = atomic64_read(&key->tx_pn);
3619                 break;
3620         default:
3621                 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3622                 memcpy(u.cmd.common.key, key->key, key->keylen);
3623         }
3624
3625         if (mcast)
3626                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3627         if (mfp)
3628                 key_flags |= cpu_to_le16(STA_KEY_MFP);
3629
3630         u.cmd.common.key_offset = key_offset;
3631         u.cmd.common.key_flags = key_flags;
3632         u.cmd.common.sta_id = sta_id;
3633
3634         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3635                 i = 0;
3636         else
3637                 i = -1;
3638
3639         for (; i < IEEE80211_NUM_TIDS; i++) {
3640                 struct ieee80211_key_seq seq = {};
3641                 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3642                 int rx_pn_len = 8;
3643                 /* there's a hole at 2/3 in FW format depending on version */
3644                 int hole = api_ver >= 3 ? 0 : 2;
3645
3646                 ieee80211_get_key_rx_seq(key, i, &seq);
3647
3648                 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3649                         rx_pn[0] = seq.tkip.iv16;
3650                         rx_pn[1] = seq.tkip.iv16 >> 8;
3651                         rx_pn[2 + hole] = seq.tkip.iv32;
3652                         rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3653                         rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3654                         rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3655                 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3656                         rx_pn = seq.hw.seq;
3657                         rx_pn_len = seq.hw.seq_len;
3658                 } else {
3659                         rx_pn[0] = seq.ccmp.pn[0];
3660                         rx_pn[1] = seq.ccmp.pn[1];
3661                         rx_pn[2 + hole] = seq.ccmp.pn[2];
3662                         rx_pn[3 + hole] = seq.ccmp.pn[3];
3663                         rx_pn[4 + hole] = seq.ccmp.pn[4];
3664                         rx_pn[5 + hole] = seq.ccmp.pn[5];
3665                 }
3666
3667                 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3668                                    rx_pn_len) > 0)
3669                         memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3670                                rx_pn_len);
3671         }
3672
3673         if (api_ver >= 2) {
3674                 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3675                 size = sizeof(u.cmd);
3676         } else {
3677                 size = sizeof(u.cmd_v1);
3678         }
3679
3680         status = ADD_STA_SUCCESS;
3681         if (cmd_flags & CMD_ASYNC)
3682                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3683                                            &u.cmd);
3684         else
3685                 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3686                                                   &u.cmd, &status);
3687
3688         switch (status) {
3689         case ADD_STA_SUCCESS:
3690                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3691                 break;
3692         default:
3693                 ret = -EIO;
3694                 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3695                 break;
3696         }
3697
3698         return ret;
3699 }
3700
3701 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3702                                  struct ieee80211_key_conf *keyconf,
3703                                  u8 sta_id, bool remove_key)
3704 {
3705         struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3706
3707         /* verify the key details match the required command's expectations */
3708         if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3709                     (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3710                      keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3711                     (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3712                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3713                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3714                 return -EINVAL;
3715
3716         if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3717                     keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3718                 return -EINVAL;
3719
3720         igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3721         igtk_cmd.sta_id = cpu_to_le32(sta_id);
3722
3723         if (remove_key) {
3724                 /* This is a valid situation for IGTK */
3725                 if (sta_id == IWL_INVALID_STA)
3726                         return 0;
3727
3728                 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3729         } else {
3730                 struct ieee80211_key_seq seq;
3731                 const u8 *pn;
3732
3733                 switch (keyconf->cipher) {
3734                 case WLAN_CIPHER_SUITE_AES_CMAC:
3735                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3736                         break;
3737                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3738                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3739                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3740                         break;
3741                 default:
3742                         return -EINVAL;
3743                 }
3744
3745                 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3746                 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3747                         igtk_cmd.ctrl_flags |=
3748                                 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3749                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3750                 pn = seq.aes_cmac.pn;
3751                 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3752                                                        ((u64) pn[4] << 8) |
3753                                                        ((u64) pn[3] << 16) |
3754                                                        ((u64) pn[2] << 24) |
3755                                                        ((u64) pn[1] << 32) |
3756                                                        ((u64) pn[0] << 40));
3757         }
3758
3759         IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3760                        remove_key ? "removing" : "installing",
3761                        keyconf->keyidx >= 6 ? "B" : "",
3762                        keyconf->keyidx, igtk_cmd.sta_id);
3763
3764         if (!iwl_mvm_has_new_rx_api(mvm)) {
3765                 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3766                         .ctrl_flags = igtk_cmd.ctrl_flags,
3767                         .key_id = igtk_cmd.key_id,
3768                         .sta_id = igtk_cmd.sta_id,
3769                         .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3770                 };
3771
3772                 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3773                        ARRAY_SIZE(igtk_cmd_v1.igtk));
3774                 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3775                                             sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3776         }
3777         return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3778                                     sizeof(igtk_cmd), &igtk_cmd);
3779 }
3780
3781
3782 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3783                                        struct ieee80211_vif *vif,
3784                                        struct ieee80211_sta *sta)
3785 {
3786         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3787
3788         if (sta)
3789                 return sta->addr;
3790
3791         if (vif->type == NL80211_IFTYPE_STATION &&
3792             mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3793                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3794                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3795                                                 lockdep_is_held(&mvm->mutex));
3796                 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3797                         return NULL;
3798
3799                 return sta->addr;
3800         }
3801
3802
3803         return NULL;
3804 }
3805
3806 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3807                                  struct ieee80211_vif *vif,
3808                                  struct ieee80211_sta *sta,
3809                                  struct ieee80211_key_conf *keyconf,
3810                                  u8 key_offset,
3811                                  bool mcast)
3812 {
3813         const u8 *addr;
3814         struct ieee80211_key_seq seq;
3815         u16 p1k[5];
3816         u32 sta_id;
3817         bool mfp = false;
3818
3819         if (sta) {
3820                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3821
3822                 sta_id = mvm_sta->deflink.sta_id;
3823                 mfp = sta->mfp;
3824         } else if (vif->type == NL80211_IFTYPE_AP &&
3825                    !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3826                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3827
3828                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3829         } else {
3830                 IWL_ERR(mvm, "Failed to find station id\n");
3831                 return -EINVAL;
3832         }
3833
3834         if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3835                 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3836                 if (!addr) {
3837                         IWL_ERR(mvm, "Failed to find mac address\n");
3838                         return -EINVAL;
3839                 }
3840
3841                 /* get phase 1 key from mac80211 */
3842                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3843                 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3844
3845                 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3846                                             seq.tkip.iv32, p1k, 0, key_offset,
3847                                             mfp);
3848         }
3849
3850         return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3851                                     0, NULL, 0, key_offset, mfp);
3852 }
3853
3854 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3855                         struct ieee80211_vif *vif,
3856                         struct ieee80211_sta *sta,
3857                         struct ieee80211_key_conf *keyconf,
3858                         u8 key_offset)
3859 {
3860         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3861         struct iwl_mvm_sta *mvm_sta;
3862         u8 sta_id = IWL_INVALID_STA;
3863         int ret;
3864         static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3865
3866         lockdep_assert_held(&mvm->mutex);
3867
3868         if (vif->type != NL80211_IFTYPE_AP ||
3869             keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3870                 /* Get the station id from the mvm local station table */
3871                 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3872                 if (!mvm_sta) {
3873                         IWL_ERR(mvm, "Failed to find station\n");
3874                         return -EINVAL;
3875                 }
3876                 sta_id = mvm_sta->deflink.sta_id;
3877
3878                 /*
3879                  * It is possible that the 'sta' parameter is NULL, and thus
3880                  * there is a need to retrieve the sta from the local station
3881                  * table.
3882                  */
3883                 if (!sta) {
3884                         sta = rcu_dereference_protected(
3885                                 mvm->fw_id_to_mac_id[sta_id],
3886                                 lockdep_is_held(&mvm->mutex));
3887                         if (IS_ERR_OR_NULL(sta)) {
3888                                 IWL_ERR(mvm, "Invalid station id\n");
3889                                 return -EINVAL;
3890                         }
3891                 }
3892
3893                 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3894                         return -EINVAL;
3895         } else {
3896                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3897
3898                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3899         }
3900
3901         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3902             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3903             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3904                 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3905                 goto end;
3906         }
3907
3908         /* If the key_offset is not pre-assigned, we need to find a
3909          * new offset to use.  In normal cases, the offset is not
3910          * pre-assigned, but during HW_RESTART we want to reuse the
3911          * same indices, so we pass them when this function is called.
3912          *
3913          * In D3 entry, we need to hardcoded the indices (because the
3914          * firmware hardcodes the PTK offset to 0).  In this case, we
3915          * need to make sure we don't overwrite the hw_key_idx in the
3916          * keyconf structure, because otherwise we cannot configure
3917          * the original ones back when resuming.
3918          */
3919         if (key_offset == STA_KEY_IDX_INVALID) {
3920                 key_offset  = iwl_mvm_set_fw_key_idx(mvm);
3921                 if (key_offset == STA_KEY_IDX_INVALID)
3922                         return -ENOSPC;
3923                 keyconf->hw_key_idx = key_offset;
3924         }
3925
3926         ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3927         if (ret)
3928                 goto end;
3929
3930         /*
3931          * For WEP, the same key is used for multicast and unicast. Upload it
3932          * again, using the same key offset, and now pointing the other one
3933          * to the same key slot (offset).
3934          * If this fails, remove the original as well.
3935          */
3936         if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3937              keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3938             sta) {
3939                 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3940                                             key_offset, !mcast);
3941                 if (ret) {
3942                         __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3943                         goto end;
3944                 }
3945         }
3946
3947         __set_bit(key_offset, mvm->fw_key_table);
3948
3949 end:
3950         IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3951                       keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3952                       sta ? sta->addr : zero_addr, ret);
3953         return ret;
3954 }
3955
3956 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3957                            struct ieee80211_vif *vif,
3958                            struct ieee80211_sta *sta,
3959                            struct ieee80211_key_conf *keyconf)
3960 {
3961         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3962         struct iwl_mvm_sta *mvm_sta;
3963         u8 sta_id = IWL_INVALID_STA;
3964         int ret, i;
3965
3966         lockdep_assert_held(&mvm->mutex);
3967
3968         /* Get the station from the mvm local station table */
3969         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3970         if (mvm_sta)
3971                 sta_id = mvm_sta->deflink.sta_id;
3972         else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3973                 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3974
3975
3976         IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3977                       keyconf->keyidx, sta_id);
3978
3979         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3980             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3981             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3982                 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3983
3984         if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3985                 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3986                         keyconf->hw_key_idx);
3987                 return -ENOENT;
3988         }
3989
3990         /* track which key was deleted last */
3991         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3992                 if (mvm->fw_key_deleted[i] < U8_MAX)
3993                         mvm->fw_key_deleted[i]++;
3994         }
3995         mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3996
3997         if (sta && !mvm_sta) {
3998                 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3999                 return 0;
4000         }
4001
4002         ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
4003         if (ret)
4004                 return ret;
4005
4006         /* delete WEP key twice to get rid of (now useless) offset */
4007         if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4008             keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4009                 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4010
4011         return ret;
4012 }
4013
4014 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4015                              struct ieee80211_vif *vif,
4016                              struct ieee80211_key_conf *keyconf,
4017                              struct ieee80211_sta *sta, u32 iv32,
4018                              u16 *phase1key)
4019 {
4020         struct iwl_mvm_sta *mvm_sta;
4021         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4022         bool mfp = sta ? sta->mfp : false;
4023
4024         rcu_read_lock();
4025
4026         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4027         if (WARN_ON_ONCE(!mvm_sta))
4028                 goto unlock;
4029         iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4030                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4031                              mfp);
4032
4033  unlock:
4034         rcu_read_unlock();
4035 }
4036
4037 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4038                                 struct ieee80211_sta *sta)
4039 {
4040         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4041         struct iwl_mvm_add_sta_cmd cmd = {
4042                 .add_modify = STA_MODE_MODIFY,
4043                 .sta_id = mvmsta->deflink.sta_id,
4044                 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4045                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4046         };
4047         int ret;
4048
4049         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4050                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4051         if (ret)
4052                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4053 }
4054
4055 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4056                                        struct ieee80211_sta *sta,
4057                                        enum ieee80211_frame_release_type reason,
4058                                        u16 cnt, u16 tids, bool more_data,
4059                                        bool single_sta_queue)
4060 {
4061         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4062         struct iwl_mvm_add_sta_cmd cmd = {
4063                 .add_modify = STA_MODE_MODIFY,
4064                 .sta_id = mvmsta->deflink.sta_id,
4065                 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4066                 .sleep_tx_count = cpu_to_le16(cnt),
4067                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4068         };
4069         int tid, ret;
4070         unsigned long _tids = tids;
4071
4072         /* convert TIDs to ACs - we don't support TSPEC so that's OK
4073          * Note that this field is reserved and unused by firmware not
4074          * supporting GO uAPSD, so it's safe to always do this.
4075          */
4076         for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4077                 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4078
4079         /* If we're releasing frames from aggregation or dqa queues then check
4080          * if all the queues that we're releasing frames from, combined, have:
4081          *  - more frames than the service period, in which case more_data
4082          *    needs to be set
4083          *  - fewer than 'cnt' frames, in which case we need to adjust the
4084          *    firmware command (but do that unconditionally)
4085          */
4086         if (single_sta_queue) {
4087                 int remaining = cnt;
4088                 int sleep_tx_count;
4089
4090                 spin_lock_bh(&mvmsta->lock);
4091                 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4092                         struct iwl_mvm_tid_data *tid_data;
4093                         u16 n_queued;
4094
4095                         tid_data = &mvmsta->tid_data[tid];
4096
4097                         n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4098                         if (n_queued > remaining) {
4099                                 more_data = true;
4100                                 remaining = 0;
4101                                 break;
4102                         }
4103                         remaining -= n_queued;
4104                 }
4105                 sleep_tx_count = cnt - remaining;
4106                 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4107                         mvmsta->sleep_tx_count = sleep_tx_count;
4108                 spin_unlock_bh(&mvmsta->lock);
4109
4110                 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4111                 if (WARN_ON(cnt - remaining == 0)) {
4112                         ieee80211_sta_eosp(sta);
4113                         return;
4114                 }
4115         }
4116
4117         /* Note: this is ignored by firmware not supporting GO uAPSD */
4118         if (more_data)
4119                 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4120
4121         if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4122                 mvmsta->next_status_eosp = true;
4123                 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4124         } else {
4125                 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4126         }
4127
4128         /* block the Tx queues until the FW updated the sleep Tx count */
4129         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4130                                    CMD_ASYNC | CMD_BLOCK_TXQS,
4131                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4132         if (ret)
4133                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4134 }
4135
4136 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4137                            struct iwl_rx_cmd_buffer *rxb)
4138 {
4139         struct iwl_rx_packet *pkt = rxb_addr(rxb);
4140         struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4141         struct ieee80211_sta *sta;
4142         u32 sta_id = le32_to_cpu(notif->sta_id);
4143
4144         if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4145                 return;
4146
4147         rcu_read_lock();
4148         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4149         if (!IS_ERR_OR_NULL(sta))
4150                 ieee80211_sta_eosp(sta);
4151         rcu_read_unlock();
4152 }
4153
4154 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4155                                    struct iwl_mvm_sta *mvmsta,
4156                                    bool disable)
4157 {
4158         struct iwl_mvm_add_sta_cmd cmd = {
4159                 .add_modify = STA_MODE_MODIFY,
4160                 .sta_id = mvmsta->deflink.sta_id,
4161                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4162                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4163                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4164         };
4165         int ret;
4166
4167         if (mvm->mld_api_is_used) {
4168                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4169                         iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4170                 return;
4171         }
4172
4173         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4174                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4175         if (ret)
4176                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4177 }
4178
4179 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4180                                       struct ieee80211_sta *sta,
4181                                       bool disable)
4182 {
4183         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4184
4185         if (mvm->mld_api_is_used) {
4186                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4187                         iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4188                 return;
4189         }
4190
4191         spin_lock_bh(&mvm_sta->lock);
4192
4193         if (mvm_sta->disable_tx == disable) {
4194                 spin_unlock_bh(&mvm_sta->lock);
4195                 return;
4196         }
4197
4198         mvm_sta->disable_tx = disable;
4199
4200         /*
4201          * If sta PS state is handled by mac80211, tell it to start/stop
4202          * queuing tx for this station.
4203          */
4204         if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4205                 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4206
4207         iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4208
4209         spin_unlock_bh(&mvm_sta->lock);
4210 }
4211
4212 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4213                                               struct iwl_mvm_vif *mvmvif,
4214                                               struct iwl_mvm_int_sta *sta,
4215                                               bool disable)
4216 {
4217         u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4218         struct iwl_mvm_add_sta_cmd cmd = {
4219                 .add_modify = STA_MODE_MODIFY,
4220                 .sta_id = sta->sta_id,
4221                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4222                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4223                 .mac_id_n_color = cpu_to_le32(id),
4224         };
4225         int ret;
4226
4227         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4228                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4229         if (ret)
4230                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4231 }
4232
4233 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4234                                        struct iwl_mvm_vif *mvmvif,
4235                                        bool disable)
4236 {
4237         struct ieee80211_sta *sta;
4238         struct iwl_mvm_sta *mvm_sta;
4239         int i;
4240
4241         if (mvm->mld_api_is_used) {
4242                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4243                         iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,
4244                                                               disable);
4245                 return;
4246         }
4247
4248         rcu_read_lock();
4249
4250         /* Block/unblock all the stations of the given mvmvif */
4251         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4252                 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4253                 if (IS_ERR_OR_NULL(sta))
4254                         continue;
4255
4256                 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4257                 if (mvm_sta->mac_id_n_color !=
4258                     FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4259                         continue;
4260
4261                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4262         }
4263
4264         rcu_read_unlock();
4265
4266         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4267                 return;
4268
4269         /* Need to block/unblock also multicast station */
4270         if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA)
4271                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4272                                                   &mvmvif->deflink.mcast_sta,
4273                                                   disable);
4274
4275         /*
4276          * Only unblock the broadcast station (FW blocks it for immediate
4277          * quiet, not the driver)
4278          */
4279         if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA)
4280                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4281                                                   &mvmvif->deflink.bcast_sta,
4282                                                   disable);
4283 }
4284
4285 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4286 {
4287         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4288         struct iwl_mvm_sta *mvmsta;
4289
4290         rcu_read_lock();
4291
4292         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4293
4294         if (mvmsta)
4295                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4296
4297         rcu_read_unlock();
4298 }
4299
4300 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4301 {
4302         u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4303
4304         /*
4305          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4306          * to align the wrap around of ssn so we compare relevant values.
4307          */
4308         if (mvm->trans->trans_cfg->gen2)
4309                 sn &= 0xff;
4310
4311         return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4312 }
4313
4314 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4315                          struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4316                          u8 *key, u32 key_len,
4317                          struct ieee80211_key_conf *keyconf)
4318 {
4319         int ret;
4320         u16 queue;
4321         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4322         unsigned int wdg_timeout =
4323                 iwl_mvm_get_wd_timeout(mvm, vif);
4324         bool mld = iwl_mvm_has_mld_api(mvm->fw);
4325         u32 type = IWL_STA_LINK;
4326
4327         if (mld)
4328                 type = STATION_TYPE_PEER;
4329
4330         ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4331                                        NL80211_IFTYPE_UNSPECIFIED, type);
4332         if (ret)
4333                 return ret;
4334
4335         if (mld)
4336                 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4337                                                          mvmvif->deflink.fw_link_id,
4338                                                          &queue,
4339                                                          IWL_MAX_TID_COUNT,
4340                                                          &wdg_timeout);
4341         else
4342                 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4343                                                      mvmvif->color, addr, sta,
4344                                                      &queue,
4345                                                      IWL_MVM_TX_FIFO_BE);
4346         if (ret)
4347                 goto out;
4348
4349         keyconf->cipher = cipher;
4350         memcpy(keyconf->key, key, key_len);
4351         keyconf->keylen = key_len;
4352         keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4353
4354         if (mld) {
4355                 /* The MFP flag is set according to the station mfp field. Since
4356                  * we don't have a station, set it manually.
4357                  */
4358                 u32 key_flags =
4359                         iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4360                         IWL_SEC_KEY_FLAG_MFP;
4361                 u32 sta_mask = BIT(sta->sta_id);
4362
4363                 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4364         } else {
4365                 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4366                                            0, NULL, 0, 0, true);
4367         }
4368
4369 out:
4370         if (ret)
4371                 iwl_mvm_dealloc_int_sta(mvm, sta);
4372         return ret;
4373 }
4374
4375 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4376                                    struct ieee80211_vif *vif,
4377                                    u32 id)
4378 {
4379         struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4380                 .id = cpu_to_le32(id),
4381         };
4382         int ret;
4383
4384         ret = iwl_mvm_send_cmd_pdu(mvm,
4385                                    WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4386                                    CMD_ASYNC,
4387                                    sizeof(cancel_channel_switch_cmd),
4388                                    &cancel_channel_switch_cmd);
4389         if (ret)
4390                 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4391 }
4392
4393 static int iwl_mvm_fw_sta_id_to_fw_link_id(struct iwl_mvm_vif *mvmvif,
4394                                            u8 fw_sta_id)
4395 {
4396         struct ieee80211_link_sta *link_sta =
4397                 rcu_dereference(mvmvif->mvm->fw_id_to_link_sta[fw_sta_id]);
4398         struct iwl_mvm_vif_link_info *link;
4399
4400         if (WARN_ON_ONCE(!link_sta))
4401                 return -EINVAL;
4402
4403         link = mvmvif->link[link_sta->link_id];
4404
4405         if (WARN_ON_ONCE(!link))
4406                 return -EINVAL;
4407
4408         return link->fw_link_id;
4409 }
4410
4411 #define IWL_MVM_TPT_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ)
4412
4413 void iwl_mvm_count_mpdu(struct iwl_mvm_sta *mvm_sta, u8 fw_sta_id, u32 count,
4414                         bool tx, int queue)
4415 {
4416         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvm_sta->vif);
4417         struct iwl_mvm *mvm = mvmvif->mvm;
4418         struct iwl_mvm_tpt_counter *queue_counter;
4419         struct iwl_mvm_mpdu_counter *link_counter;
4420         u32 total_mpdus = 0;
4421         int fw_link_id;
4422
4423         /* Count only for a BSS sta, and only when EMLSR is possible */
4424         if (!mvm_sta->mpdu_counters)
4425                 return;
4426
4427         /* Map sta id to link id */
4428         fw_link_id = iwl_mvm_fw_sta_id_to_fw_link_id(mvmvif, fw_sta_id);
4429         if (fw_link_id < 0)
4430                 return;
4431
4432         queue_counter = &mvm_sta->mpdu_counters[queue];
4433         link_counter = &queue_counter->per_link[fw_link_id];
4434
4435         spin_lock_bh(&queue_counter->lock);
4436
4437         if (tx)
4438                 link_counter->tx += count;
4439         else
4440                 link_counter->rx += count;
4441
4442         /*
4443          * When not in EMLSR, the window and the decision to enter EMLSR are
4444          * handled during counting, when in EMLSR - in the statistics flow
4445          */
4446         if (mvmvif->esr_active)
4447                 goto out;
4448
4449         if (time_is_before_jiffies(queue_counter->window_start +
4450                                         IWL_MVM_TPT_COUNT_WINDOW)) {
4451                 memset(queue_counter->per_link, 0,
4452                        sizeof(queue_counter->per_link));
4453                 queue_counter->window_start = jiffies;
4454
4455                 IWL_DEBUG_INFO(mvm, "MPDU counters are cleared\n");
4456         }
4457
4458         for (int i = 0; i < IWL_FW_MAX_LINK_ID; i++)
4459                 total_mpdus += tx ? queue_counter->per_link[i].tx :
4460                                     queue_counter->per_link[i].rx;
4461
4462         if (total_mpdus > IWL_MVM_ENTER_ESR_TPT_THRESH)
4463                 wiphy_work_queue(mvmvif->mvm->hw->wiphy,
4464                                  &mvmvif->unblock_esr_tpt_wk);
4465
4466 out:
4467         spin_unlock_bh(&queue_counter->lock);
4468 }