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         mutex_lock(&mvm->mutex);
1524
1525         iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1526
1527         while (!list_empty(&mvm->add_stream_txqs)) {
1528                 struct iwl_mvm_txq *mvmtxq;
1529                 struct ieee80211_txq *txq;
1530                 u8 tid;
1531
1532                 mvmtxq = list_first_entry(&mvm->add_stream_txqs,
1533                                           struct iwl_mvm_txq, list);
1534
1535                 txq = container_of((void *)mvmtxq, struct ieee80211_txq,
1536                                    drv_priv);
1537                 tid = txq->tid;
1538                 if (tid == IEEE80211_NUM_TIDS)
1539                         tid = IWL_MAX_TID_COUNT;
1540
1541                 /*
1542                  * We can't really do much here, but if this fails we can't
1543                  * transmit anyway - so just don't transmit the frame etc.
1544                  * and let them back up ... we've tried our best to allocate
1545                  * a queue in the function itself.
1546                  */
1547                 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {
1548                         spin_lock_bh(&mvm->add_stream_lock);
1549                         list_del_init(&mvmtxq->list);
1550                         spin_unlock_bh(&mvm->add_stream_lock);
1551                         continue;
1552                 }
1553
1554                 /* now we're ready, any remaining races/concurrency will be
1555                  * handled in iwl_mvm_mac_itxq_xmit()
1556                  */
1557                 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
1558
1559                 local_bh_disable();
1560                 spin_lock(&mvm->add_stream_lock);
1561                 list_del_init(&mvmtxq->list);
1562                 spin_unlock(&mvm->add_stream_lock);
1563
1564                 iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1565                 local_bh_enable();
1566         }
1567
1568         mutex_unlock(&mvm->mutex);
1569 }
1570
1571 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1572                                       struct ieee80211_sta *sta,
1573                                       enum nl80211_iftype vif_type)
1574 {
1575         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1576         int queue;
1577
1578         /* queue reserving is disabled on new TX path */
1579         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1580                 return 0;
1581
1582         /* run the general cleanup/unsharing of queues */
1583         iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA);
1584
1585         /* Make sure we have free resources for this STA */
1586         if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1587             !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&
1588             (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1589              IWL_MVM_QUEUE_FREE))
1590                 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1591         else
1592                 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
1593                                                 IWL_MVM_DQA_MIN_DATA_QUEUE,
1594                                                 IWL_MVM_DQA_MAX_DATA_QUEUE);
1595         if (queue < 0) {
1596                 /* try again - this time kick out a queue if needed */
1597                 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);
1598                 if (queue < 0) {
1599                         IWL_ERR(mvm, "No available queues for new station\n");
1600                         return -ENOSPC;
1601                 }
1602         }
1603         mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1604
1605         mvmsta->reserved_queue = queue;
1606
1607         IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1608                             queue, mvmsta->deflink.sta_id);
1609
1610         return 0;
1611 }
1612
1613 /*
1614  * In DQA mode, after a HW restart the queues should be allocated as before, in
1615  * order to avoid race conditions when there are shared queues. This function
1616  * does the re-mapping and queue allocation.
1617  *
1618  * Note that re-enabling aggregations isn't done in this function.
1619  */
1620 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1621                                           struct ieee80211_sta *sta)
1622 {
1623         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1624         unsigned int wdg =
1625                 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif);
1626         int i;
1627         struct iwl_trans_txq_scd_cfg cfg = {
1628                 .sta_id = mvm_sta->deflink.sta_id,
1629                 .frame_limit = IWL_FRAME_LIMIT,
1630         };
1631
1632         /* Make sure reserved queue is still marked as such (if allocated) */
1633         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1634                 mvm->queue_info[mvm_sta->reserved_queue].status =
1635                         IWL_MVM_QUEUE_RESERVED;
1636
1637         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1638                 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1639                 int txq_id = tid_data->txq_id;
1640                 int ac;
1641
1642                 if (txq_id == IWL_MVM_INVALID_QUEUE)
1643                         continue;
1644
1645                 ac = tid_to_mac80211_ac[i];
1646
1647                 if (iwl_mvm_has_new_tx_api(mvm)) {
1648                         IWL_DEBUG_TX_QUEUES(mvm,
1649                                             "Re-mapping sta %d tid %d\n",
1650                                             mvm_sta->deflink.sta_id, i);
1651                         txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,
1652                                                          mvm_sta->deflink.sta_id,
1653                                                          i, wdg);
1654                         /*
1655                          * on failures, just set it to IWL_MVM_INVALID_QUEUE
1656                          * to try again later, we have no other good way of
1657                          * failing here
1658                          */
1659                         if (txq_id < 0)
1660                                 txq_id = IWL_MVM_INVALID_QUEUE;
1661                         tid_data->txq_id = txq_id;
1662
1663                         /*
1664                          * Since we don't set the seq number after reset, and HW
1665                          * sets it now, FW reset will cause the seq num to start
1666                          * at 0 again, so driver will need to update it
1667                          * internally as well, so it keeps in sync with real val
1668                          */
1669                         tid_data->seq_number = 0;
1670                 } else {
1671                         u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1672
1673                         cfg.tid = i;
1674                         cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1675                         cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1676                                          txq_id ==
1677                                          IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1678
1679                         IWL_DEBUG_TX_QUEUES(mvm,
1680                                             "Re-mapping sta %d tid %d to queue %d\n",
1681                                             mvm_sta->deflink.sta_id, i,
1682                                             txq_id);
1683
1684                         iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);
1685                         mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1686                 }
1687         }
1688 }
1689
1690 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1691                                       struct iwl_mvm_int_sta *sta,
1692                                       const u8 *addr,
1693                                       u16 mac_id, u16 color)
1694 {
1695         struct iwl_mvm_add_sta_cmd cmd;
1696         int ret;
1697         u32 status = ADD_STA_SUCCESS;
1698
1699         lockdep_assert_held(&mvm->mutex);
1700
1701         memset(&cmd, 0, sizeof(cmd));
1702         cmd.sta_id = sta->sta_id;
1703
1704         if (iwl_mvm_has_new_station_api(mvm->fw) &&
1705             sta->type == IWL_STA_AUX_ACTIVITY)
1706                 cmd.mac_id_n_color = cpu_to_le32(mac_id);
1707         else
1708                 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1709                                                                      color));
1710
1711         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1712                 cmd.station_type = sta->type;
1713
1714         if (!iwl_mvm_has_new_tx_api(mvm))
1715                 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1716         cmd.tid_disable_tx = cpu_to_le16(0xffff);
1717
1718         if (addr)
1719                 memcpy(cmd.addr, addr, ETH_ALEN);
1720
1721         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1722                                           iwl_mvm_add_sta_cmd_size(mvm),
1723                                           &cmd, &status);
1724         if (ret)
1725                 return ret;
1726
1727         switch (status & IWL_ADD_STA_STATUS_MASK) {
1728         case ADD_STA_SUCCESS:
1729                 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1730                 return 0;
1731         default:
1732                 ret = -EIO;
1733                 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1734                         status);
1735                 break;
1736         }
1737         return ret;
1738 }
1739
1740 /* Initialize driver data of a new sta */
1741 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1742                      struct ieee80211_sta *sta, int sta_id, u8 sta_type)
1743 {
1744         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1745         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1746         struct iwl_mvm_rxq_dup_data *dup_data;
1747         int i, ret = 0;
1748
1749         lockdep_assert_held(&mvm->mutex);
1750
1751         mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1752                                                       mvmvif->color);
1753         mvm_sta->vif = vif;
1754
1755         /* for MLD sta_id(s) should be allocated for each link before calling
1756          * this function
1757          */
1758         if (!mvm->mld_api_is_used) {
1759                 if (WARN_ON(sta_id == IWL_INVALID_STA))
1760                         return -EINVAL;
1761
1762                 mvm_sta->deflink.sta_id = sta_id;
1763                 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);
1764
1765                 if (!mvm->trans->trans_cfg->gen2)
1766                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1767                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1768                 else
1769                         mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
1770                                 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1771         }
1772
1773         mvm_sta->tt_tx_protection = false;
1774         mvm_sta->sta_type = sta_type;
1775
1776         mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1777
1778         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1779                 /*
1780                  * Mark all queues for this STA as unallocated and defer TX
1781                  * frames until the queue is allocated
1782                  */
1783                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1784         }
1785
1786         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
1787                 struct iwl_mvm_txq *mvmtxq =
1788                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
1789
1790                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
1791                 INIT_LIST_HEAD(&mvmtxq->list);
1792                 atomic_set(&mvmtxq->tx_request, 0);
1793         }
1794
1795         if (iwl_mvm_has_new_rx_api(mvm)) {
1796                 int q;
1797
1798                 dup_data = kcalloc(mvm->trans->num_rx_queues,
1799                                    sizeof(*dup_data), GFP_KERNEL);
1800                 if (!dup_data)
1801                         return -ENOMEM;
1802                 /*
1803                  * Initialize all the last_seq values to 0xffff which can never
1804                  * compare equal to the frame's seq_ctrl in the check in
1805                  * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1806                  * number and fragmented packets don't reach that function.
1807                  *
1808                  * This thus allows receiving a packet with seqno 0 and the
1809                  * retry bit set as the very first packet on a new TID.
1810                  */
1811                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1812                         memset(dup_data[q].last_seq, 0xff,
1813                                sizeof(dup_data[q].last_seq));
1814                 mvm_sta->dup_data = dup_data;
1815         }
1816
1817         if (!iwl_mvm_has_new_tx_api(mvm)) {
1818                 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1819                                                  ieee80211_vif_type_p2p(vif));
1820                 if (ret)
1821                         return ret;
1822         }
1823
1824         /*
1825          * if rs is registered with mac80211, then "add station" will be handled
1826          * via the corresponding ops, otherwise need to notify rate scaling here
1827          */
1828         if (iwl_mvm_has_tlc_offload(mvm))
1829                 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1830         else
1831                 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);
1832
1833         iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
1834
1835         /* MPDUs are counted only when EMLSR is possible */
1836         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1837             !sta->tdls && ieee80211_vif_is_mld(vif)) {
1838                 mvm_sta->mpdu_counters =
1839                         kcalloc(mvm->trans->num_rx_queues,
1840                                 sizeof(*mvm_sta->mpdu_counters),
1841                                 GFP_KERNEL);
1842                 if (mvm_sta->mpdu_counters)
1843                         for (int q = 0; q < mvm->trans->num_rx_queues; q++)
1844                                 spin_lock_init(&mvm_sta->mpdu_counters[q].lock);
1845         }
1846
1847         return 0;
1848 }
1849
1850 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1851                     struct ieee80211_vif *vif,
1852                     struct ieee80211_sta *sta)
1853 {
1854         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1855         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1856         int ret, sta_id;
1857         bool sta_update = false;
1858         unsigned int sta_flags = 0;
1859
1860         lockdep_assert_held(&mvm->mutex);
1861
1862         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1863                 sta_id = iwl_mvm_find_free_sta_id(mvm,
1864                                                   ieee80211_vif_type_p2p(vif));
1865         else
1866                 sta_id = mvm_sta->deflink.sta_id;
1867
1868         if (sta_id == IWL_INVALID_STA)
1869                 return -ENOSPC;
1870
1871         spin_lock_init(&mvm_sta->lock);
1872
1873         /* if this is a HW restart re-alloc existing queues */
1874         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1875                 struct iwl_mvm_int_sta tmp_sta = {
1876                         .sta_id = sta_id,
1877                         .type = mvm_sta->sta_type,
1878                 };
1879
1880                 /* First add an empty station since allocating
1881                  * a queue requires a valid station
1882                  */
1883                 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1884                                                  mvmvif->id, mvmvif->color);
1885                 if (ret)
1886                         goto err;
1887
1888                 iwl_mvm_realloc_queues_after_restart(mvm, sta);
1889                 sta_update = true;
1890                 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1891                 goto update_fw;
1892         }
1893
1894         ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,
1895                                sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);
1896         if (ret)
1897                 goto err;
1898
1899 update_fw:
1900         ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1901         if (ret)
1902                 goto err;
1903
1904         if (vif->type == NL80211_IFTYPE_STATION) {
1905                 if (!sta->tdls) {
1906                         WARN_ON(mvmvif->deflink.ap_sta_id != IWL_INVALID_STA);
1907                         mvmvif->deflink.ap_sta_id = sta_id;
1908                 } else {
1909                         WARN_ON(mvmvif->deflink.ap_sta_id == IWL_INVALID_STA);
1910                 }
1911         }
1912
1913         rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1914
1915         return 0;
1916
1917 err:
1918         return ret;
1919 }
1920
1921 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1922                       bool drain)
1923 {
1924         struct iwl_mvm_add_sta_cmd cmd = {};
1925         int ret;
1926         u32 status;
1927
1928         lockdep_assert_held(&mvm->mutex);
1929
1930         cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1931         cmd.sta_id = mvmsta->deflink.sta_id;
1932         cmd.add_modify = STA_MODE_MODIFY;
1933         cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1934         cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1935
1936         status = ADD_STA_SUCCESS;
1937         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1938                                           iwl_mvm_add_sta_cmd_size(mvm),
1939                                           &cmd, &status);
1940         if (ret)
1941                 return ret;
1942
1943         switch (status & IWL_ADD_STA_STATUS_MASK) {
1944         case ADD_STA_SUCCESS:
1945                 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1946                                mvmsta->deflink.sta_id);
1947                 break;
1948         default:
1949                 ret = -EIO;
1950                 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1951                         mvmsta->deflink.sta_id);
1952                 break;
1953         }
1954
1955         return ret;
1956 }
1957
1958 /*
1959  * Remove a station from the FW table. Before sending the command to remove
1960  * the station validate that the station is indeed known to the driver (sanity
1961  * only).
1962  */
1963 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1964 {
1965         struct ieee80211_sta *sta;
1966         struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1967                 .sta_id = sta_id,
1968         };
1969         int ret;
1970
1971         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1972                                         lockdep_is_held(&mvm->mutex));
1973
1974         /* Note: internal stations are marked as error values */
1975         if (!sta) {
1976                 IWL_ERR(mvm, "Invalid station id\n");
1977                 return -EINVAL;
1978         }
1979
1980         ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1981                                    sizeof(rm_sta_cmd), &rm_sta_cmd);
1982         if (ret) {
1983                 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1984                 return ret;
1985         }
1986
1987         return 0;
1988 }
1989
1990 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1991                                        struct ieee80211_vif *vif,
1992                                        struct ieee80211_sta *sta)
1993 {
1994         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1995         int i;
1996
1997         lockdep_assert_held(&mvm->mutex);
1998
1999         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2000                 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
2001                         continue;
2002
2003                 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,
2004                                     &mvm_sta->tid_data[i].txq_id, i);
2005                 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
2006         }
2007
2008         for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
2009                 struct iwl_mvm_txq *mvmtxq =
2010                         iwl_mvm_txq_from_mac80211(sta->txq[i]);
2011
2012                 spin_lock_bh(&mvm->add_stream_lock);
2013                 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
2014                 list_del_init(&mvmtxq->list);
2015                 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
2016                 spin_unlock_bh(&mvm->add_stream_lock);
2017         }
2018 }
2019
2020 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
2021                                   struct iwl_mvm_sta *mvm_sta)
2022 {
2023         int i;
2024
2025         for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
2026                 u16 txq_id;
2027                 int ret;
2028
2029                 spin_lock_bh(&mvm_sta->lock);
2030                 txq_id = mvm_sta->tid_data[i].txq_id;
2031                 spin_unlock_bh(&mvm_sta->lock);
2032
2033                 if (txq_id == IWL_MVM_INVALID_QUEUE)
2034                         continue;
2035
2036                 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2037                 if (ret)
2038                         return ret;
2039         }
2040
2041         return 0;
2042 }
2043
2044 /* Execute the common part for both MLD and non-MLD modes.
2045  * Returns if we're done with removing the station, either
2046  * with error or success
2047  */
2048 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2049                      struct ieee80211_sta *sta,
2050                      struct ieee80211_link_sta *link_sta, int *ret)
2051 {
2052         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2053         struct iwl_mvm_vif_link_info *mvm_link =
2054                 mvmvif->link[link_sta->link_id];
2055         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2056         struct iwl_mvm_link_sta *mvm_link_sta;
2057         u8 sta_id;
2058
2059         lockdep_assert_held(&mvm->mutex);
2060
2061         mvm_link_sta =
2062                 rcu_dereference_protected(mvm_sta->link[link_sta->link_id],
2063                                           lockdep_is_held(&mvm->mutex));
2064         sta_id = mvm_link_sta->sta_id;
2065
2066         /* If there is a TXQ still marked as reserved - free it */
2067         if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
2068                 u8 reserved_txq = mvm_sta->reserved_queue;
2069                 enum iwl_mvm_queue_status *status;
2070
2071                 /*
2072                  * If no traffic has gone through the reserved TXQ - it
2073                  * is still marked as IWL_MVM_QUEUE_RESERVED, and
2074                  * should be manually marked as free again
2075                  */
2076                 status = &mvm->queue_info[reserved_txq].status;
2077                 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
2078                          (*status != IWL_MVM_QUEUE_FREE),
2079                          "sta_id %d reserved txq %d status %d",
2080                          sta_id, reserved_txq, *status)) {
2081                         *ret = -EINVAL;
2082                         return true;
2083                 }
2084
2085                 *status = IWL_MVM_QUEUE_FREE;
2086         }
2087
2088         if (vif->type == NL80211_IFTYPE_STATION &&
2089             mvm_link->ap_sta_id == sta_id) {
2090                 /* if associated - we can't remove the AP STA now */
2091                 if (vif->cfg.assoc)
2092                         return true;
2093
2094                 /* first remove remaining keys */
2095                 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);
2096
2097                 /* unassoc - go ahead - remove the AP STA now */
2098                 mvm_link->ap_sta_id = IWL_INVALID_STA;
2099         }
2100
2101         /*
2102          * This shouldn't happen - the TDLS channel switch should be canceled
2103          * before the STA is removed.
2104          */
2105         if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
2106                 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA;
2107                 cancel_delayed_work(&mvm->tdls_cs.dwork);
2108         }
2109
2110         return false;
2111 }
2112
2113 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
2114                    struct ieee80211_vif *vif,
2115                    struct ieee80211_sta *sta)
2116 {
2117         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2118         int ret;
2119
2120         lockdep_assert_held(&mvm->mutex);
2121
2122         ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
2123         if (ret)
2124                 return ret;
2125
2126         /* flush its queues here since we are freeing mvm_sta */
2127         ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,
2128                                 mvm_sta->tfd_queue_msk);
2129         if (ret)
2130                 return ret;
2131         if (iwl_mvm_has_new_tx_api(mvm)) {
2132                 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
2133         } else {
2134                 u32 q_mask = mvm_sta->tfd_queue_msk;
2135
2136                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2137                                                      q_mask);
2138         }
2139         if (ret)
2140                 return ret;
2141
2142         ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
2143
2144         iwl_mvm_disable_sta_queues(mvm, vif, sta);
2145
2146         if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))
2147                 return ret;
2148
2149         ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);
2150         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);
2151
2152         return ret;
2153 }
2154
2155 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
2156                       struct ieee80211_vif *vif,
2157                       u8 sta_id)
2158 {
2159         int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
2160
2161         lockdep_assert_held(&mvm->mutex);
2162
2163         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
2164         return ret;
2165 }
2166
2167 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
2168                              struct iwl_mvm_int_sta *sta,
2169                              u32 qmask, enum nl80211_iftype iftype,
2170                              u8 type)
2171 {
2172         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
2173             sta->sta_id == IWL_INVALID_STA) {
2174                 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
2175                 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA))
2176                         return -ENOSPC;
2177         }
2178
2179         sta->tfd_queue_msk = qmask;
2180         sta->type = type;
2181
2182         /* put a non-NULL value so iterating over the stations won't stop */
2183         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
2184         return 0;
2185 }
2186
2187 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
2188 {
2189         RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
2190         memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
2191         sta->sta_id = IWL_INVALID_STA;
2192 }
2193
2194 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
2195                                           u8 sta_id, u8 fifo)
2196 {
2197         unsigned int wdg_timeout =
2198                 mvm->trans->trans_cfg->base_params->wd_timeout;
2199         struct iwl_trans_txq_scd_cfg cfg = {
2200                 .fifo = fifo,
2201                 .sta_id = sta_id,
2202                 .tid = IWL_MAX_TID_COUNT,
2203                 .aggregate = false,
2204                 .frame_limit = IWL_FRAME_LIMIT,
2205         };
2206
2207         WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2208
2209         iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2210 }
2211
2212 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
2213 {
2214         unsigned int wdg_timeout =
2215                 mvm->trans->trans_cfg->base_params->wd_timeout;
2216
2217         WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2218
2219         return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,
2220                                        wdg_timeout);
2221 }
2222
2223 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
2224                                           int maccolor, u8 *addr,
2225                                           struct iwl_mvm_int_sta *sta,
2226                                           u16 *queue, int fifo)
2227 {
2228         int ret;
2229
2230         /* Map queue to fifo - needs to happen before adding station */
2231         if (!iwl_mvm_has_new_tx_api(mvm))
2232                 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
2233
2234         ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);
2235         if (ret) {
2236                 if (!iwl_mvm_has_new_tx_api(mvm))
2237                         iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,
2238                                             IWL_MAX_TID_COUNT);
2239                 return ret;
2240         }
2241
2242         /*
2243          * For 22000 firmware and on we cannot add queue to a station unknown
2244          * to firmware so enable queue here - after the station was added
2245          */
2246         if (iwl_mvm_has_new_tx_api(mvm)) {
2247                 int txq;
2248
2249                 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
2250                 if (txq < 0) {
2251                         iwl_mvm_rm_sta_common(mvm, sta->sta_id);
2252                         return txq;
2253                 }
2254
2255                 *queue = txq;
2256         }
2257
2258         return 0;
2259 }
2260
2261 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
2262 {
2263         int ret;
2264         u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :
2265                 BIT(mvm->aux_queue);
2266
2267         lockdep_assert_held(&mvm->mutex);
2268
2269         /* Allocate aux station and assign to it the aux queue */
2270         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,
2271                                        NL80211_IFTYPE_UNSPECIFIED,
2272                                        IWL_STA_AUX_ACTIVITY);
2273         if (ret)
2274                 return ret;
2275
2276         /*
2277          * In CDB NICs we need to specify which lmac to use for aux activity
2278          * using the mac_id argument place to send lmac_id to the function
2279          */
2280         ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,
2281                                              &mvm->aux_sta, &mvm->aux_queue,
2282                                              IWL_MVM_TX_FIFO_MCAST);
2283         if (ret) {
2284                 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2285                 return ret;
2286         }
2287
2288         return 0;
2289 }
2290
2291 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2292 {
2293         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2294
2295         lockdep_assert_held(&mvm->mutex);
2296
2297         return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
2298                                               NULL, &mvm->snif_sta,
2299                                               &mvm->snif_queue,
2300                                               IWL_MVM_TX_FIFO_BE);
2301 }
2302
2303 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2304 {
2305         int ret;
2306
2307         lockdep_assert_held(&mvm->mutex);
2308
2309         if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA))
2310                 return -EINVAL;
2311
2312         iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,
2313                             &mvm->snif_queue, IWL_MAX_TID_COUNT);
2314         ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
2315         if (ret)
2316                 IWL_WARN(mvm, "Failed sending remove station\n");
2317
2318         return ret;
2319 }
2320
2321 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)
2322 {
2323         int ret;
2324
2325         lockdep_assert_held(&mvm->mutex);
2326
2327         if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA))
2328                 return -EINVAL;
2329
2330         iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,
2331                             &mvm->aux_queue, IWL_MAX_TID_COUNT);
2332         ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);
2333         if (ret)
2334                 IWL_WARN(mvm, "Failed sending remove station\n");
2335         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
2336
2337         return ret;
2338 }
2339
2340 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
2341 {
2342         iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
2343 }
2344
2345 /*
2346  * Send the add station command for the vif's broadcast station.
2347  * Assumes that the station was already allocated.
2348  *
2349  * @mvm: the mvm component
2350  * @vif: the interface to which the broadcast station is added
2351  * @bsta: the broadcast station to add.
2352  */
2353 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2354 {
2355         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2356         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2357         static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
2358         const u8 *baddr = _baddr;
2359         int queue;
2360         int ret;
2361         unsigned int wdg_timeout =
2362                 iwl_mvm_get_wd_timeout(mvm, vif);
2363         struct iwl_trans_txq_scd_cfg cfg = {
2364                 .fifo = IWL_MVM_TX_FIFO_VO,
2365                 .sta_id = mvmvif->deflink.bcast_sta.sta_id,
2366                 .tid = IWL_MAX_TID_COUNT,
2367                 .aggregate = false,
2368                 .frame_limit = IWL_FRAME_LIMIT,
2369         };
2370
2371         lockdep_assert_held(&mvm->mutex);
2372
2373         if (!iwl_mvm_has_new_tx_api(mvm)) {
2374                 if (vif->type == NL80211_IFTYPE_AP ||
2375                     vif->type == NL80211_IFTYPE_ADHOC) {
2376                         queue = mvm->probe_queue;
2377                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2378                         queue = mvm->p2p_dev_queue;
2379                 } else {
2380                         WARN(1, "Missing required TXQ for adding bcast STA\n");
2381                         return -EINVAL;
2382                 }
2383
2384                 bsta->tfd_queue_msk |= BIT(queue);
2385
2386                 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
2387         }
2388
2389         if (vif->type == NL80211_IFTYPE_ADHOC)
2390                 baddr = vif->bss_conf.bssid;
2391
2392         if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA))
2393                 return -ENOSPC;
2394
2395         ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
2396                                          mvmvif->id, mvmvif->color);
2397         if (ret)
2398                 return ret;
2399
2400         /*
2401          * For 22000 firmware and on we cannot add queue to a station unknown
2402          * to firmware so enable queue here - after the station was added
2403          */
2404         if (iwl_mvm_has_new_tx_api(mvm)) {
2405                 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,
2406                                                 IWL_MAX_TID_COUNT,
2407                                                 wdg_timeout);
2408                 if (queue < 0) {
2409                         iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
2410                         return queue;
2411                 }
2412
2413                 if (vif->type == NL80211_IFTYPE_AP ||
2414                     vif->type == NL80211_IFTYPE_ADHOC) {
2415                         /* for queue management */
2416                         mvm->probe_queue = queue;
2417                         /* for use in TX */
2418                         mvmvif->deflink.mgmt_queue = queue;
2419                 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2420                         mvm->p2p_dev_queue = queue;
2421                 }
2422         } else if (vif->type == NL80211_IFTYPE_AP ||
2423                    vif->type == NL80211_IFTYPE_ADHOC) {
2424                 /* set it for use in TX */
2425                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2426         }
2427
2428         return 0;
2429 }
2430
2431 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
2432                                    struct ieee80211_vif *vif)
2433 {
2434         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2435         u16 *queueptr, queue;
2436
2437         lockdep_assert_held(&mvm->mutex);
2438
2439         iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,
2440                           mvmvif->deflink.bcast_sta.tfd_queue_msk);
2441
2442         switch (vif->type) {
2443         case NL80211_IFTYPE_AP:
2444         case NL80211_IFTYPE_ADHOC:
2445                 queueptr = &mvm->probe_queue;
2446                 break;
2447         case NL80211_IFTYPE_P2P_DEVICE:
2448                 queueptr = &mvm->p2p_dev_queue;
2449                 break;
2450         default:
2451                 WARN(1, "Can't free bcast queue on vif type %d\n",
2452                      vif->type);
2453                 return;
2454         }
2455
2456         queue = *queueptr;
2457         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,
2458                             queueptr, IWL_MAX_TID_COUNT);
2459
2460         if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)
2461                 mvmvif->deflink.mgmt_queue = mvm->probe_queue;
2462
2463         if (iwl_mvm_has_new_tx_api(mvm))
2464                 return;
2465
2466         WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));
2467         mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);
2468 }
2469
2470 /* Send the FW a request to remove the station from it's internal data
2471  * structures, but DO NOT remove the entry from the local data structures. */
2472 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2473 {
2474         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2475         int ret;
2476
2477         lockdep_assert_held(&mvm->mutex);
2478
2479         iwl_mvm_free_bcast_sta_queues(mvm, vif);
2480
2481         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);
2482         if (ret)
2483                 IWL_WARN(mvm, "Failed sending remove station\n");
2484         return ret;
2485 }
2486
2487 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2488 {
2489         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2490
2491         lockdep_assert_held(&mvm->mutex);
2492
2493         return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,
2494                                         ieee80211_vif_type_p2p(vif),
2495                                         IWL_STA_GENERAL_PURPOSE);
2496 }
2497
2498 /* Allocate a new station entry for the broadcast station to the given vif,
2499  * and send it to the FW.
2500  * Note that each P2P mac should have its own broadcast station.
2501  *
2502  * @mvm: the mvm component
2503  * @vif: the interface to which the broadcast station is added
2504  * @bsta: the broadcast station to add. */
2505 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2506 {
2507         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2508         struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;
2509         int ret;
2510
2511         lockdep_assert_held(&mvm->mutex);
2512
2513         ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
2514         if (ret)
2515                 return ret;
2516
2517         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2518
2519         if (ret)
2520                 iwl_mvm_dealloc_int_sta(mvm, bsta);
2521
2522         return ret;
2523 }
2524
2525 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2526 {
2527         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2528
2529         iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);
2530 }
2531
2532 /*
2533  * Send the FW a request to remove the station from it's internal data
2534  * structures, and in addition remove it from the local data structure.
2535  */
2536 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2537 {
2538         int ret;
2539
2540         lockdep_assert_held(&mvm->mutex);
2541
2542         ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2543
2544         iwl_mvm_dealloc_bcast_sta(mvm, vif);
2545
2546         return ret;
2547 }
2548
2549 /*
2550  * Allocate a new station entry for the multicast station to the given vif,
2551  * and send it to the FW.
2552  * Note that each AP/GO mac should have its own multicast station.
2553  *
2554  * @mvm: the mvm component
2555  * @vif: the interface to which the multicast station is added
2556  */
2557 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2558 {
2559         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2560         struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;
2561         static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2562         const u8 *maddr = _maddr;
2563         struct iwl_trans_txq_scd_cfg cfg = {
2564                 .fifo = vif->type == NL80211_IFTYPE_AP ?
2565                         IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,
2566                 .sta_id = msta->sta_id,
2567                 .tid = 0,
2568                 .aggregate = false,
2569                 .frame_limit = IWL_FRAME_LIMIT,
2570         };
2571         unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif);
2572         int ret;
2573
2574         lockdep_assert_held(&mvm->mutex);
2575
2576         if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2577                     vif->type != NL80211_IFTYPE_ADHOC))
2578                 return -EOPNOTSUPP;
2579
2580         /*
2581          * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2582          * invalid, so make sure we use the queue we want.
2583          * Note that this is done here as we want to avoid making DQA
2584          * changes in mac80211 layer.
2585          */
2586         if (vif->type == NL80211_IFTYPE_ADHOC)
2587                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2588
2589         /*
2590          * While in previous FWs we had to exclude cab queue from TFD queue
2591          * mask, now it is needed as any other queue.
2592          */
2593         if (!iwl_mvm_has_new_tx_api(mvm) &&
2594             fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2595                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2596                                    &cfg,
2597                                    timeout);
2598                 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);
2599         }
2600         ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2601                                          mvmvif->id, mvmvif->color);
2602         if (ret)
2603                 goto err;
2604
2605         /*
2606          * Enable cab queue after the ADD_STA command is sent.
2607          * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2608          * command with unknown station id, and for FW that doesn't support
2609          * station API since the cab queue is not included in the
2610          * tfd_queue_mask.
2611          */
2612         if (iwl_mvm_has_new_tx_api(mvm)) {
2613                 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,
2614                                                     0, timeout);
2615                 if (queue < 0) {
2616                         ret = queue;
2617                         goto err;
2618                 }
2619                 mvmvif->deflink.cab_queue = queue;
2620         } else if (!fw_has_api(&mvm->fw->ucode_capa,
2621                                IWL_UCODE_TLV_API_STA_TYPE))
2622                 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,
2623                                    &cfg,
2624                                    timeout);
2625
2626         return 0;
2627 err:
2628         iwl_mvm_dealloc_int_sta(mvm, msta);
2629         return ret;
2630 }
2631
2632 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2633                                     struct ieee80211_key_conf *keyconf,
2634                                     bool mcast)
2635 {
2636         union {
2637                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2638                 struct iwl_mvm_add_sta_key_cmd cmd;
2639         } u = {};
2640         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2641                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2642         __le16 key_flags;
2643         int ret, size;
2644         u32 status;
2645
2646         /* This is a valid situation for GTK removal */
2647         if (sta_id == IWL_INVALID_STA)
2648                 return 0;
2649
2650         key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2651                                  STA_KEY_FLG_KEYID_MSK);
2652         key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2653         key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2654
2655         if (mcast)
2656                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2657
2658         /*
2659          * The fields assigned here are in the same location at the start
2660          * of the command, so we can do this union trick.
2661          */
2662         u.cmd.common.key_flags = key_flags;
2663         u.cmd.common.key_offset = keyconf->hw_key_idx;
2664         u.cmd.common.sta_id = sta_id;
2665
2666         size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
2667
2668         status = ADD_STA_SUCCESS;
2669         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
2670                                           &status);
2671
2672         switch (status) {
2673         case ADD_STA_SUCCESS:
2674                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2675                 break;
2676         default:
2677                 ret = -EIO;
2678                 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2679                 break;
2680         }
2681
2682         return ret;
2683 }
2684
2685 /*
2686  * Send the FW a request to remove the station from it's internal data
2687  * structures, and in addition remove it from the local data structure.
2688  */
2689 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2690 {
2691         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2692         int ret;
2693
2694         lockdep_assert_held(&mvm->mutex);
2695
2696         iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,
2697                           mvmvif->deflink.mcast_sta.tfd_queue_msk);
2698
2699         iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,
2700                             &mvmvif->deflink.cab_queue, 0);
2701
2702         ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);
2703         if (ret)
2704                 IWL_WARN(mvm, "Failed sending remove station\n");
2705
2706         return ret;
2707 }
2708
2709 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2710 {
2711         struct iwl_mvm_delba_data notif = {
2712                 .baid = baid,
2713         };
2714
2715         iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,
2716                                         &notif, sizeof(notif));
2717 };
2718
2719 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2720                                  struct iwl_mvm_baid_data *data)
2721 {
2722         int i;
2723
2724         iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2725
2726         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2727                 int j;
2728                 struct iwl_mvm_reorder_buffer *reorder_buf =
2729                         &data->reorder_buf[i];
2730                 struct iwl_mvm_reorder_buf_entry *entries =
2731                         &data->entries[i * data->entries_per_queue];
2732
2733                 spin_lock_bh(&reorder_buf->lock);
2734                 if (likely(!reorder_buf->num_stored)) {
2735                         spin_unlock_bh(&reorder_buf->lock);
2736                         continue;
2737                 }
2738
2739                 /*
2740                  * This shouldn't happen in regular DELBA since the internal
2741                  * delBA notification should trigger a release of all frames in
2742                  * the reorder buffer.
2743                  */
2744                 WARN_ON(1);
2745
2746                 for (j = 0; j < data->buf_size; j++)
2747                         __skb_queue_purge(&entries[j].frames);
2748
2749                 spin_unlock_bh(&reorder_buf->lock);
2750         }
2751 }
2752
2753 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2754                                         struct iwl_mvm_baid_data *data,
2755                                         u16 ssn)
2756 {
2757         int i;
2758
2759         for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2760                 struct iwl_mvm_reorder_buffer *reorder_buf =
2761                         &data->reorder_buf[i];
2762                 struct iwl_mvm_reorder_buf_entry *entries =
2763                         &data->entries[i * data->entries_per_queue];
2764                 int j;
2765
2766                 reorder_buf->num_stored = 0;
2767                 reorder_buf->head_sn = ssn;
2768                 spin_lock_init(&reorder_buf->lock);
2769                 reorder_buf->queue = i;
2770                 reorder_buf->valid = false;
2771                 for (j = 0; j < data->buf_size; j++)
2772                         __skb_queue_head_init(&entries[j].frames);
2773         }
2774 }
2775
2776 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,
2777                                   struct ieee80211_sta *sta,
2778                                   bool start, int tid, u16 ssn,
2779                                   u16 buf_size)
2780 {
2781         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2782         struct iwl_mvm_add_sta_cmd cmd = {
2783                 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
2784                 .sta_id = mvm_sta->deflink.sta_id,
2785                 .add_modify = STA_MODE_MODIFY,
2786         };
2787         u32 status;
2788         int ret;
2789
2790         if (start) {
2791                 cmd.add_immediate_ba_tid = tid;
2792                 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2793                 cmd.rx_ba_window = cpu_to_le16(buf_size);
2794                 cmd.modify_mask = STA_MODIFY_ADD_BA_TID;
2795         } else {
2796                 cmd.remove_immediate_ba_tid = tid;
2797                 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;
2798         }
2799
2800         status = ADD_STA_SUCCESS;
2801         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2802                                           iwl_mvm_add_sta_cmd_size(mvm),
2803                                           &cmd, &status);
2804         if (ret)
2805                 return ret;
2806
2807         switch (status & IWL_ADD_STA_STATUS_MASK) {
2808         case ADD_STA_SUCCESS:
2809                 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2810                              start ? "start" : "stopp");
2811                 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&
2812                             !(status & IWL_ADD_STA_BAID_VALID_MASK)))
2813                         return -EINVAL;
2814                 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);
2815         case ADD_STA_IMMEDIATE_BA_FAILURE:
2816                 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2817                 return -ENOSPC;
2818         default:
2819                 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2820                         start ? "start" : "stopp", status);
2821                 return -EIO;
2822         }
2823 }
2824
2825 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,
2826                                   struct ieee80211_sta *sta,
2827                                   bool start, int tid, u16 ssn,
2828                                   u16 buf_size, int baid)
2829 {
2830         struct iwl_rx_baid_cfg_cmd cmd = {
2831                 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :
2832                                   cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),
2833         };
2834         struct iwl_host_cmd hcmd = {
2835                 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD),
2836                 .flags = CMD_SEND_IN_RFKILL,
2837                 .len[0] = sizeof(cmd),
2838                 .data[0] = &cmd,
2839         };
2840         int ret;
2841
2842         BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
2843
2844         if (start) {
2845                 cmd.alloc.sta_id_mask =
2846                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2847                 cmd.alloc.tid = tid;
2848                 cmd.alloc.ssn = cpu_to_le16(ssn);
2849                 cmd.alloc.win_size = cpu_to_le16(buf_size);
2850                 baid = -EIO;
2851         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) {
2852                 cmd.remove_v1.baid = cpu_to_le32(baid);
2853                 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));
2854         } else {
2855                 cmd.remove.sta_id_mask =
2856                         cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));
2857                 cmd.remove.tid = cpu_to_le32(tid);
2858         }
2859
2860         ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid);
2861         if (ret)
2862                 return ret;
2863
2864         if (!start) {
2865                 /* ignore firmware baid on remove */
2866                 baid = 0;
2867         }
2868
2869         IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2870                      start ? "start" : "stopp");
2871
2872         if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))
2873                 return -EINVAL;
2874
2875         return baid;
2876 }
2877
2878 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2879                               bool start, int tid, u16 ssn, u16 buf_size,
2880                               int baid)
2881 {
2882         if (fw_has_capa(&mvm->fw->ucode_capa,
2883                         IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))
2884                 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,
2885                                               tid, ssn, buf_size, baid);
2886
2887         return iwl_mvm_fw_baid_op_sta(mvm, sta, start,
2888                                       tid, ssn, buf_size);
2889 }
2890
2891 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2892                        int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)
2893 {
2894         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2895         struct iwl_mvm_baid_data *baid_data = NULL;
2896         int ret, baid;
2897         u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :
2898                                                                IWL_MAX_BAID_OLD;
2899
2900         lockdep_assert_held(&mvm->mutex);
2901
2902         if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {
2903                 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2904                 return -ENOSPC;
2905         }
2906
2907         if (iwl_mvm_has_new_rx_api(mvm) && start) {
2908                 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2909
2910                 /* sparse doesn't like the __align() so don't check */
2911 #ifndef __CHECKER__
2912                 /*
2913                  * The division below will be OK if either the cache line size
2914                  * can be divided by the entry size (ALIGN will round up) or if
2915                  * if the entry size can be divided by the cache line size, in
2916                  * which case the ALIGN() will do nothing.
2917                  */
2918                 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2919                              sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2920 #endif
2921
2922                 /*
2923                  * Upward align the reorder buffer size to fill an entire cache
2924                  * line for each queue, to avoid sharing cache lines between
2925                  * different queues.
2926                  */
2927                 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2928
2929                 /*
2930                  * Allocate here so if allocation fails we can bail out early
2931                  * before starting the BA session in the firmware
2932                  */
2933                 baid_data = kzalloc(sizeof(*baid_data) +
2934                                     mvm->trans->num_rx_queues *
2935                                     reorder_buf_size,
2936                                     GFP_KERNEL);
2937                 if (!baid_data)
2938                         return -ENOMEM;
2939
2940                 /*
2941                  * This division is why we need the above BUILD_BUG_ON(),
2942                  * if that doesn't hold then this will not be right.
2943                  */
2944                 baid_data->entries_per_queue =
2945                         reorder_buf_size / sizeof(baid_data->entries[0]);
2946         }
2947
2948         if (iwl_mvm_has_new_rx_api(mvm) && !start) {
2949                 baid = mvm_sta->tid_to_baid[tid];
2950         } else {
2951                 /* we don't really need it in this case */
2952                 baid = -1;
2953         }
2954
2955         /* Don't send command to remove (start=0) BAID during restart */
2956         if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2957                 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,
2958                                           baid);
2959
2960         if (baid < 0) {
2961                 ret = baid;
2962                 goto out_free;
2963         }
2964
2965         if (start) {
2966                 mvm->rx_ba_sessions++;
2967
2968                 if (!iwl_mvm_has_new_rx_api(mvm))
2969                         return 0;
2970
2971                 baid_data->baid = baid;
2972                 baid_data->timeout = timeout;
2973                 baid_data->last_rx = jiffies;
2974                 baid_data->rcu_ptr = &mvm->baid_map[baid];
2975                 timer_setup(&baid_data->session_timer,
2976                             iwl_mvm_rx_agg_session_expired, 0);
2977                 baid_data->mvm = mvm;
2978                 baid_data->tid = tid;
2979                 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
2980                 baid_data->buf_size = buf_size;
2981
2982                 mvm_sta->tid_to_baid[tid] = baid;
2983                 if (timeout)
2984                         mod_timer(&baid_data->session_timer,
2985                                   TU_TO_EXP_TIME(timeout * 2));
2986
2987                 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn);
2988                 /*
2989                  * protect the BA data with RCU to cover a case where our
2990                  * internal RX sync mechanism will timeout (not that it's
2991                  * supposed to happen) and we will free the session data while
2992                  * RX is being processed in parallel
2993                  */
2994                 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2995                              mvm_sta->deflink.sta_id, tid, baid);
2996                 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2997                 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2998         } else  {
2999                 baid = mvm_sta->tid_to_baid[tid];
3000
3001                 if (mvm->rx_ba_sessions > 0)
3002                         /* check that restart flow didn't zero the counter */
3003                         mvm->rx_ba_sessions--;
3004                 if (!iwl_mvm_has_new_rx_api(mvm))
3005                         return 0;
3006
3007                 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
3008                         return -EINVAL;
3009
3010                 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
3011                 if (WARN_ON(!baid_data))
3012                         return -EINVAL;
3013
3014                 /* synchronize all rx queues so we can safely delete */
3015                 iwl_mvm_free_reorder(mvm, baid_data);
3016                 timer_shutdown_sync(&baid_data->session_timer);
3017                 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
3018                 kfree_rcu(baid_data, rcu_head);
3019                 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
3020         }
3021         return 0;
3022
3023 out_free:
3024         kfree(baid_data);
3025         return ret;
3026 }
3027
3028 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
3029                        int tid, u8 queue, bool start)
3030 {
3031         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3032         struct iwl_mvm_add_sta_cmd cmd = {};
3033         int ret;
3034         u32 status;
3035
3036         lockdep_assert_held(&mvm->mutex);
3037
3038         if (start) {
3039                 mvm_sta->tfd_queue_msk |= BIT(queue);
3040                 mvm_sta->tid_disable_agg &= ~BIT(tid);
3041         } else {
3042                 /* In DQA-mode the queue isn't removed on agg termination */
3043                 mvm_sta->tid_disable_agg |= BIT(tid);
3044         }
3045
3046         cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
3047         cmd.sta_id = mvm_sta->deflink.sta_id;
3048         cmd.add_modify = STA_MODE_MODIFY;
3049         if (!iwl_mvm_has_new_tx_api(mvm))
3050                 cmd.modify_mask = STA_MODIFY_QUEUES;
3051         cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
3052         cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
3053         cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
3054
3055         status = ADD_STA_SUCCESS;
3056         ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
3057                                           iwl_mvm_add_sta_cmd_size(mvm),
3058                                           &cmd, &status);
3059         if (ret)
3060                 return ret;
3061
3062         switch (status & IWL_ADD_STA_STATUS_MASK) {
3063         case ADD_STA_SUCCESS:
3064                 break;
3065         default:
3066                 ret = -EIO;
3067                 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
3068                         start ? "start" : "stopp", status);
3069                 break;
3070         }
3071
3072         return ret;
3073 }
3074
3075 const u8 tid_to_mac80211_ac[] = {
3076         IEEE80211_AC_BE,
3077         IEEE80211_AC_BK,
3078         IEEE80211_AC_BK,
3079         IEEE80211_AC_BE,
3080         IEEE80211_AC_VI,
3081         IEEE80211_AC_VI,
3082         IEEE80211_AC_VO,
3083         IEEE80211_AC_VO,
3084         IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
3085 };
3086
3087 static const u8 tid_to_ucode_ac[] = {
3088         AC_BE,
3089         AC_BK,
3090         AC_BK,
3091         AC_BE,
3092         AC_VI,
3093         AC_VI,
3094         AC_VO,
3095         AC_VO,
3096 };
3097
3098 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3099                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3100 {
3101         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3102         struct iwl_mvm_tid_data *tid_data;
3103         u16 normalized_ssn;
3104         u16 txq_id;
3105         int ret;
3106
3107         if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
3108                 return -EINVAL;
3109
3110         if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
3111             mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
3112                 IWL_ERR(mvm,
3113                         "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
3114                         mvmsta->tid_data[tid].state);
3115                 return -ENXIO;
3116         }
3117
3118         lockdep_assert_held(&mvm->mutex);
3119
3120         if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
3121             iwl_mvm_has_new_tx_api(mvm)) {
3122                 u8 ac = tid_to_mac80211_ac[tid];
3123
3124                 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
3125                 if (ret)
3126                         return ret;
3127         }
3128
3129         spin_lock_bh(&mvmsta->lock);
3130
3131         /*
3132          * Note the possible cases:
3133          *  1. An enabled TXQ - TXQ needs to become agg'ed
3134          *  2. The TXQ hasn't yet been enabled, so find a free one and mark
3135          *      it as reserved
3136          */
3137         txq_id = mvmsta->tid_data[tid].txq_id;
3138         if (txq_id == IWL_MVM_INVALID_QUEUE) {
3139                 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,
3140                                               IWL_MVM_DQA_MIN_DATA_QUEUE,
3141                                               IWL_MVM_DQA_MAX_DATA_QUEUE);
3142                 if (ret < 0) {
3143                         IWL_ERR(mvm, "Failed to allocate agg queue\n");
3144                         goto out;
3145                 }
3146
3147                 txq_id = ret;
3148
3149                 /* TXQ hasn't yet been enabled, so mark it only as reserved */
3150                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
3151         } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {
3152                 ret = -ENXIO;
3153                 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",
3154                         tid, IWL_MAX_HW_QUEUES - 1);
3155                 goto out;
3156
3157         } else if (unlikely(mvm->queue_info[txq_id].status ==
3158                             IWL_MVM_QUEUE_SHARED)) {
3159                 ret = -ENXIO;
3160                 IWL_DEBUG_TX_QUEUES(mvm,
3161                                     "Can't start tid %d agg on shared queue!\n",
3162                                     tid);
3163                 goto out;
3164         }
3165
3166         IWL_DEBUG_TX_QUEUES(mvm,
3167                             "AGG for tid %d will be on queue #%d\n",
3168                             tid, txq_id);
3169
3170         tid_data = &mvmsta->tid_data[tid];
3171         tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3172         tid_data->txq_id = txq_id;
3173         *ssn = tid_data->ssn;
3174
3175         IWL_DEBUG_TX_QUEUES(mvm,
3176                             "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
3177                             mvmsta->deflink.sta_id, tid, txq_id,
3178                             tid_data->ssn,
3179                             tid_data->next_reclaimed);
3180
3181         /*
3182          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3183          * to align the wrap around of ssn so we compare relevant values.
3184          */
3185         normalized_ssn = tid_data->ssn;
3186         if (mvm->trans->trans_cfg->gen2)
3187                 normalized_ssn &= 0xff;
3188
3189         if (normalized_ssn == tid_data->next_reclaimed) {
3190                 tid_data->state = IWL_AGG_STARTING;
3191                 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
3192         } else {
3193                 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3194                 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;
3195         }
3196
3197 out:
3198         spin_unlock_bh(&mvmsta->lock);
3199
3200         return ret;
3201 }
3202
3203 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3204                             struct ieee80211_sta *sta, u16 tid, u16 buf_size,
3205                             bool amsdu)
3206 {
3207         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3208         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3209         unsigned int wdg_timeout =
3210                 iwl_mvm_get_wd_timeout(mvm, vif);
3211         int queue, ret;
3212         bool alloc_queue = true;
3213         enum iwl_mvm_queue_status queue_status;
3214         u16 ssn;
3215
3216         struct iwl_trans_txq_scd_cfg cfg = {
3217                 .sta_id = mvmsta->deflink.sta_id,
3218                 .tid = tid,
3219                 .frame_limit = buf_size,
3220                 .aggregate = true,
3221         };
3222
3223         /*
3224          * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
3225          * manager, so this function should never be called in this case.
3226          */
3227         if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
3228                 return -EINVAL;
3229
3230         BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
3231                      != IWL_MAX_TID_COUNT);
3232
3233         spin_lock_bh(&mvmsta->lock);
3234         ssn = tid_data->ssn;
3235         queue = tid_data->txq_id;
3236         tid_data->state = IWL_AGG_ON;
3237         mvmsta->agg_tids |= BIT(tid);
3238         tid_data->ssn = 0xffff;
3239         tid_data->amsdu_in_ampdu_allowed = amsdu;
3240         spin_unlock_bh(&mvmsta->lock);
3241
3242         if (iwl_mvm_has_new_tx_api(mvm)) {
3243                 /*
3244                  * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
3245                  * would have failed, so if we are here there is no need to
3246                  * allocate a queue.
3247                  * However, if aggregation size is different than the default
3248                  * size, the scheduler should be reconfigured.
3249                  * We cannot do this with the new TX API, so return unsupported
3250                  * for now, until it will be offloaded to firmware..
3251                  * Note that if SCD default value changes - this condition
3252                  * should be updated as well.
3253                  */
3254                 if (buf_size < IWL_FRAME_LIMIT)
3255                         return -EOPNOTSUPP;
3256
3257                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3258                 if (ret)
3259                         return -EIO;
3260                 goto out;
3261         }
3262
3263         cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
3264
3265         queue_status = mvm->queue_info[queue].status;
3266
3267         /* Maybe there is no need to even alloc a queue... */
3268         if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
3269                 alloc_queue = false;
3270
3271         /*
3272          * Only reconfig the SCD for the queue if the window size has
3273          * changed from current (become smaller)
3274          */
3275         if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
3276                 /*
3277                  * If reconfiguring an existing queue, it first must be
3278                  * drained
3279                  */
3280                 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
3281                                                      BIT(queue));
3282                 if (ret) {
3283                         IWL_ERR(mvm,
3284                                 "Error draining queue before reconfig\n");
3285                         return ret;
3286                 }
3287
3288                 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
3289                                            mvmsta->deflink.sta_id, tid,
3290                                            buf_size, ssn);
3291                 if (ret) {
3292                         IWL_ERR(mvm,
3293                                 "Error reconfiguring TXQ #%d\n", queue);
3294                         return ret;
3295                 }
3296         }
3297
3298         if (alloc_queue)
3299                 iwl_mvm_enable_txq(mvm, sta, queue, ssn,
3300                                    &cfg, wdg_timeout);
3301
3302         /* Send ADD_STA command to enable aggs only if the queue isn't shared */
3303         if (queue_status != IWL_MVM_QUEUE_SHARED) {
3304                 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
3305                 if (ret)
3306                         return -EIO;
3307         }
3308
3309         /* No need to mark as reserved */
3310         mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
3311
3312 out:
3313         /*
3314          * Even though in theory the peer could have different
3315          * aggregation reorder buffer sizes for different sessions,
3316          * our ucode doesn't allow for that and has a global limit
3317          * for each station. Therefore, use the minimum of all the
3318          * aggregation sessions and our default value.
3319          */
3320         mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =
3321                 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,
3322                     buf_size);
3323         mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =
3324                 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;
3325
3326         IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
3327                      sta->addr, tid);
3328
3329         return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);
3330 }
3331
3332 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
3333                                         struct iwl_mvm_sta *mvmsta,
3334                                         struct iwl_mvm_tid_data *tid_data)
3335 {
3336         u16 txq_id = tid_data->txq_id;
3337
3338         lockdep_assert_held(&mvm->mutex);
3339
3340         if (iwl_mvm_has_new_tx_api(mvm))
3341                 return;
3342
3343         /*
3344          * The TXQ is marked as reserved only if no traffic came through yet
3345          * This means no traffic has been sent on this TID (agg'd or not), so
3346          * we no longer have use for the queue. Since it hasn't even been
3347          * allocated through iwl_mvm_enable_txq, so we can just mark it back as
3348          * free.
3349          */
3350         if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
3351                 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
3352                 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
3353         }
3354 }
3355
3356 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3357                             struct ieee80211_sta *sta, u16 tid)
3358 {
3359         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3360         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3361         u16 txq_id;
3362         int err;
3363
3364         /*
3365          * If mac80211 is cleaning its state, then say that we finished since
3366          * our state has been cleared anyway.
3367          */
3368         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
3369                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3370                 return 0;
3371         }
3372
3373         spin_lock_bh(&mvmsta->lock);
3374
3375         txq_id = tid_data->txq_id;
3376
3377         IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
3378                             mvmsta->deflink.sta_id, tid, txq_id,
3379                             tid_data->state);
3380
3381         mvmsta->agg_tids &= ~BIT(tid);
3382
3383         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3384
3385         switch (tid_data->state) {
3386         case IWL_AGG_ON:
3387                 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3388
3389                 IWL_DEBUG_TX_QUEUES(mvm,
3390                                     "ssn = %d, next_recl = %d\n",
3391                                     tid_data->ssn, tid_data->next_reclaimed);
3392
3393                 tid_data->ssn = 0xffff;
3394                 tid_data->state = IWL_AGG_OFF;
3395                 spin_unlock_bh(&mvmsta->lock);
3396
3397                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3398
3399                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3400                 return 0;
3401         case IWL_AGG_STARTING:
3402         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3403                 /*
3404                  * The agg session has been stopped before it was set up. This
3405                  * can happen when the AddBA timer times out for example.
3406                  */
3407
3408                 /* No barriers since we are under mutex */
3409                 lockdep_assert_held(&mvm->mutex);
3410
3411                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3412                 tid_data->state = IWL_AGG_OFF;
3413                 err = 0;
3414                 break;
3415         default:
3416                 IWL_ERR(mvm,
3417                         "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
3418                         mvmsta->deflink.sta_id, tid, tid_data->state);
3419                 IWL_ERR(mvm,
3420                         "\ttid_data->txq_id = %d\n", tid_data->txq_id);
3421                 err = -EINVAL;
3422         }
3423
3424         spin_unlock_bh(&mvmsta->lock);
3425
3426         return err;
3427 }
3428
3429 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3430                             struct ieee80211_sta *sta, u16 tid)
3431 {
3432         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3433         struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
3434         u16 txq_id;
3435         enum iwl_mvm_agg_state old_state;
3436
3437         /*
3438          * First set the agg state to OFF to avoid calling
3439          * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
3440          */
3441         spin_lock_bh(&mvmsta->lock);
3442         txq_id = tid_data->txq_id;
3443         IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
3444                             mvmsta->deflink.sta_id, tid, txq_id,
3445                             tid_data->state);
3446         old_state = tid_data->state;
3447         tid_data->state = IWL_AGG_OFF;
3448         mvmsta->agg_tids &= ~BIT(tid);
3449         spin_unlock_bh(&mvmsta->lock);
3450
3451         iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
3452
3453         if (old_state >= IWL_AGG_ON) {
3454                 iwl_mvm_drain_sta(mvm, mvmsta, true);
3455
3456                 if (iwl_mvm_has_new_tx_api(mvm)) {
3457                         if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,
3458                                                    BIT(tid)))
3459                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3460                         iwl_trans_wait_txq_empty(mvm->trans, txq_id);
3461                 } else {
3462                         if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))
3463                                 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
3464                         iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
3465                 }
3466
3467                 iwl_mvm_drain_sta(mvm, mvmsta, false);
3468
3469                 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
3470         }
3471
3472         return 0;
3473 }
3474
3475 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
3476 {
3477         int i, max = -1, max_offs = -1;
3478
3479         lockdep_assert_held(&mvm->mutex);
3480
3481         /* Pick the unused key offset with the highest 'deleted'
3482          * counter. Every time a key is deleted, all the counters
3483          * are incremented and the one that was just deleted is
3484          * reset to zero. Thus, the highest counter is the one
3485          * that was deleted longest ago. Pick that one.
3486          */
3487         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3488                 if (test_bit(i, mvm->fw_key_table))
3489                         continue;
3490                 if (mvm->fw_key_deleted[i] > max) {
3491                         max = mvm->fw_key_deleted[i];
3492                         max_offs = i;
3493                 }
3494         }
3495
3496         if (max_offs < 0)
3497                 return STA_KEY_IDX_INVALID;
3498
3499         return max_offs;
3500 }
3501
3502 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
3503                                                struct ieee80211_vif *vif,
3504                                                struct ieee80211_sta *sta)
3505 {
3506         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3507
3508         if (sta)
3509                 return iwl_mvm_sta_from_mac80211(sta);
3510
3511         /*
3512          * The device expects GTKs for station interfaces to be
3513          * installed as GTKs for the AP station. If we have no
3514          * station ID, then use AP's station ID.
3515          */
3516         if (vif->type == NL80211_IFTYPE_STATION &&
3517             mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3518                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3519
3520                 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
3521                                             lockdep_is_held(&mvm->mutex));
3522
3523                 /*
3524                  * It is possible that the 'sta' parameter is NULL,
3525                  * for example when a GTK is removed - the sta_id will then
3526                  * be the AP ID, and no station was passed by mac80211.
3527                  */
3528                 if (IS_ERR_OR_NULL(sta))
3529                         return NULL;
3530
3531                 return iwl_mvm_sta_from_mac80211(sta);
3532         }
3533
3534         return NULL;
3535 }
3536
3537 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)
3538 {
3539         int i;
3540
3541         for (i = len - 1; i >= 0; i--) {
3542                 if (pn1[i] > pn2[i])
3543                         return 1;
3544                 if (pn1[i] < pn2[i])
3545                         return -1;
3546         }
3547
3548         return 0;
3549 }
3550
3551 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
3552                                 u32 sta_id,
3553                                 struct ieee80211_key_conf *key, bool mcast,
3554                                 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
3555                                 u8 key_offset, bool mfp)
3556 {
3557         union {
3558                 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3559                 struct iwl_mvm_add_sta_key_cmd cmd;
3560         } u = {};
3561         __le16 key_flags;
3562         int ret;
3563         u32 status;
3564         u16 keyidx;
3565         u64 pn = 0;
3566         int i, size;
3567         bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3568                                   IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3569         int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,
3570                                             new_api ? 2 : 1);
3571
3572         if (sta_id == IWL_INVALID_STA)
3573                 return -EINVAL;
3574
3575         keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
3576                  STA_KEY_FLG_KEYID_MSK;
3577         key_flags = cpu_to_le16(keyidx);
3578         key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
3579
3580         if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)
3581                 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);
3582
3583         switch (key->cipher) {
3584         case WLAN_CIPHER_SUITE_TKIP:
3585                 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
3586                 if (api_ver >= 2) {
3587                         memcpy((void *)&u.cmd.tx_mic_key,
3588                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
3589                                IWL_MIC_KEY_SIZE);
3590
3591                         memcpy((void *)&u.cmd.rx_mic_key,
3592                                &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
3593                                IWL_MIC_KEY_SIZE);
3594                         pn = atomic64_read(&key->tx_pn);
3595
3596                 } else {
3597                         u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
3598                         for (i = 0; i < 5; i++)
3599                                 u.cmd_v1.tkip_rx_ttak[i] =
3600                                         cpu_to_le16(tkip_p1k[i]);
3601                 }
3602                 memcpy(u.cmd.common.key, key->key, key->keylen);
3603                 break;
3604         case WLAN_CIPHER_SUITE_CCMP:
3605                 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
3606                 memcpy(u.cmd.common.key, key->key, key->keylen);
3607                 if (api_ver >= 2)
3608                         pn = atomic64_read(&key->tx_pn);
3609                 break;
3610         case WLAN_CIPHER_SUITE_WEP104:
3611                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
3612                 fallthrough;
3613         case WLAN_CIPHER_SUITE_WEP40:
3614                 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
3615                 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
3616                 break;
3617         case WLAN_CIPHER_SUITE_GCMP_256:
3618                 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
3619                 fallthrough;
3620         case WLAN_CIPHER_SUITE_GCMP:
3621                 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
3622                 memcpy(u.cmd.common.key, key->key, key->keylen);
3623                 if (api_ver >= 2)
3624                         pn = atomic64_read(&key->tx_pn);
3625                 break;
3626         default:
3627                 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
3628                 memcpy(u.cmd.common.key, key->key, key->keylen);
3629         }
3630
3631         if (mcast)
3632                 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3633         if (mfp)
3634                 key_flags |= cpu_to_le16(STA_KEY_MFP);
3635
3636         u.cmd.common.key_offset = key_offset;
3637         u.cmd.common.key_flags = key_flags;
3638         u.cmd.common.sta_id = sta_id;
3639
3640         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
3641                 i = 0;
3642         else
3643                 i = -1;
3644
3645         for (; i < IEEE80211_NUM_TIDS; i++) {
3646                 struct ieee80211_key_seq seq = {};
3647                 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;
3648                 int rx_pn_len = 8;
3649                 /* there's a hole at 2/3 in FW format depending on version */
3650                 int hole = api_ver >= 3 ? 0 : 2;
3651
3652                 ieee80211_get_key_rx_seq(key, i, &seq);
3653
3654                 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
3655                         rx_pn[0] = seq.tkip.iv16;
3656                         rx_pn[1] = seq.tkip.iv16 >> 8;
3657                         rx_pn[2 + hole] = seq.tkip.iv32;
3658                         rx_pn[3 + hole] = seq.tkip.iv32 >> 8;
3659                         rx_pn[4 + hole] = seq.tkip.iv32 >> 16;
3660                         rx_pn[5 + hole] = seq.tkip.iv32 >> 24;
3661                 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {
3662                         rx_pn = seq.hw.seq;
3663                         rx_pn_len = seq.hw.seq_len;
3664                 } else {
3665                         rx_pn[0] = seq.ccmp.pn[0];
3666                         rx_pn[1] = seq.ccmp.pn[1];
3667                         rx_pn[2 + hole] = seq.ccmp.pn[2];
3668                         rx_pn[3 + hole] = seq.ccmp.pn[3];
3669                         rx_pn[4 + hole] = seq.ccmp.pn[4];
3670                         rx_pn[5 + hole] = seq.ccmp.pn[5];
3671                 }
3672
3673                 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,
3674                                    rx_pn_len) > 0)
3675                         memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,
3676                                rx_pn_len);
3677         }
3678
3679         if (api_ver >= 2) {
3680                 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
3681                 size = sizeof(u.cmd);
3682         } else {
3683                 size = sizeof(u.cmd_v1);
3684         }
3685
3686         status = ADD_STA_SUCCESS;
3687         if (cmd_flags & CMD_ASYNC)
3688                 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
3689                                            &u.cmd);
3690         else
3691                 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
3692                                                   &u.cmd, &status);
3693
3694         switch (status) {
3695         case ADD_STA_SUCCESS:
3696                 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3697                 break;
3698         default:
3699                 ret = -EIO;
3700                 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3701                 break;
3702         }
3703
3704         return ret;
3705 }
3706
3707 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3708                                  struct ieee80211_key_conf *keyconf,
3709                                  u8 sta_id, bool remove_key)
3710 {
3711         struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3712
3713         /* verify the key details match the required command's expectations */
3714         if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3715                     (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&
3716                      keyconf->keyidx != 6 && keyconf->keyidx != 7) ||
3717                     (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3718                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3719                      keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3720                 return -EINVAL;
3721
3722         if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3723                     keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3724                 return -EINVAL;
3725
3726         igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3727         igtk_cmd.sta_id = cpu_to_le32(sta_id);
3728
3729         if (remove_key) {
3730                 /* This is a valid situation for IGTK */
3731                 if (sta_id == IWL_INVALID_STA)
3732                         return 0;
3733
3734                 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3735         } else {
3736                 struct ieee80211_key_seq seq;
3737                 const u8 *pn;
3738
3739                 switch (keyconf->cipher) {
3740                 case WLAN_CIPHER_SUITE_AES_CMAC:
3741                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3742                         break;
3743                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3744                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3745                         igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3746                         break;
3747                 default:
3748                         return -EINVAL;
3749                 }
3750
3751                 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3752                 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3753                         igtk_cmd.ctrl_flags |=
3754                                 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3755                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3756                 pn = seq.aes_cmac.pn;
3757                 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3758                                                        ((u64) pn[4] << 8) |
3759                                                        ((u64) pn[3] << 16) |
3760                                                        ((u64) pn[2] << 24) |
3761                                                        ((u64) pn[1] << 32) |
3762                                                        ((u64) pn[0] << 40));
3763         }
3764
3765         IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",
3766                        remove_key ? "removing" : "installing",
3767                        keyconf->keyidx >= 6 ? "B" : "",
3768                        keyconf->keyidx, igtk_cmd.sta_id);
3769
3770         if (!iwl_mvm_has_new_rx_api(mvm)) {
3771                 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3772                         .ctrl_flags = igtk_cmd.ctrl_flags,
3773                         .key_id = igtk_cmd.key_id,
3774                         .sta_id = igtk_cmd.sta_id,
3775                         .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3776                 };
3777
3778                 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3779                        ARRAY_SIZE(igtk_cmd_v1.igtk));
3780                 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3781                                             sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3782         }
3783         return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3784                                     sizeof(igtk_cmd), &igtk_cmd);
3785 }
3786
3787
3788 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3789                                        struct ieee80211_vif *vif,
3790                                        struct ieee80211_sta *sta)
3791 {
3792         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3793
3794         if (sta)
3795                 return sta->addr;
3796
3797         if (vif->type == NL80211_IFTYPE_STATION &&
3798             mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) {
3799                 u8 sta_id = mvmvif->deflink.ap_sta_id;
3800                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3801                                                 lockdep_is_held(&mvm->mutex));
3802                 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
3803                         return NULL;
3804
3805                 return sta->addr;
3806         }
3807
3808
3809         return NULL;
3810 }
3811
3812 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3813                                  struct ieee80211_vif *vif,
3814                                  struct ieee80211_sta *sta,
3815                                  struct ieee80211_key_conf *keyconf,
3816                                  u8 key_offset,
3817                                  bool mcast)
3818 {
3819         const u8 *addr;
3820         struct ieee80211_key_seq seq;
3821         u16 p1k[5];
3822         u32 sta_id;
3823         bool mfp = false;
3824
3825         if (sta) {
3826                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3827
3828                 sta_id = mvm_sta->deflink.sta_id;
3829                 mfp = sta->mfp;
3830         } else if (vif->type == NL80211_IFTYPE_AP &&
3831                    !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3832                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3833
3834                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3835         } else {
3836                 IWL_ERR(mvm, "Failed to find station id\n");
3837                 return -EINVAL;
3838         }
3839
3840         if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
3841                 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3842                 if (!addr) {
3843                         IWL_ERR(mvm, "Failed to find mac address\n");
3844                         return -EINVAL;
3845                 }
3846
3847                 /* get phase 1 key from mac80211 */
3848                 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3849                 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3850
3851                 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3852                                             seq.tkip.iv32, p1k, 0, key_offset,
3853                                             mfp);
3854         }
3855
3856         return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3857                                     0, NULL, 0, key_offset, mfp);
3858 }
3859
3860 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3861                         struct ieee80211_vif *vif,
3862                         struct ieee80211_sta *sta,
3863                         struct ieee80211_key_conf *keyconf,
3864                         u8 key_offset)
3865 {
3866         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3867         struct iwl_mvm_sta *mvm_sta;
3868         u8 sta_id = IWL_INVALID_STA;
3869         int ret;
3870         static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3871
3872         lockdep_assert_held(&mvm->mutex);
3873
3874         if (vif->type != NL80211_IFTYPE_AP ||
3875             keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3876                 /* Get the station id from the mvm local station table */
3877                 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3878                 if (!mvm_sta) {
3879                         IWL_ERR(mvm, "Failed to find station\n");
3880                         return -EINVAL;
3881                 }
3882                 sta_id = mvm_sta->deflink.sta_id;
3883
3884                 /*
3885                  * It is possible that the 'sta' parameter is NULL, and thus
3886                  * there is a need to retrieve the sta from the local station
3887                  * table.
3888                  */
3889                 if (!sta) {
3890                         sta = rcu_dereference_protected(
3891                                 mvm->fw_id_to_mac_id[sta_id],
3892                                 lockdep_is_held(&mvm->mutex));
3893                         if (IS_ERR_OR_NULL(sta)) {
3894                                 IWL_ERR(mvm, "Invalid station id\n");
3895                                 return -EINVAL;
3896                         }
3897                 }
3898
3899                 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3900                         return -EINVAL;
3901         } else {
3902                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3903
3904                 sta_id = mvmvif->deflink.mcast_sta.sta_id;
3905         }
3906
3907         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3908             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3909             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3910                 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3911                 goto end;
3912         }
3913
3914         /* If the key_offset is not pre-assigned, we need to find a
3915          * new offset to use.  In normal cases, the offset is not
3916          * pre-assigned, but during HW_RESTART we want to reuse the
3917          * same indices, so we pass them when this function is called.
3918          *
3919          * In D3 entry, we need to hardcoded the indices (because the
3920          * firmware hardcodes the PTK offset to 0).  In this case, we
3921          * need to make sure we don't overwrite the hw_key_idx in the
3922          * keyconf structure, because otherwise we cannot configure
3923          * the original ones back when resuming.
3924          */
3925         if (key_offset == STA_KEY_IDX_INVALID) {
3926                 key_offset  = iwl_mvm_set_fw_key_idx(mvm);
3927                 if (key_offset == STA_KEY_IDX_INVALID)
3928                         return -ENOSPC;
3929                 keyconf->hw_key_idx = key_offset;
3930         }
3931
3932         ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3933         if (ret)
3934                 goto end;
3935
3936         /*
3937          * For WEP, the same key is used for multicast and unicast. Upload it
3938          * again, using the same key offset, and now pointing the other one
3939          * to the same key slot (offset).
3940          * If this fails, remove the original as well.
3941          */
3942         if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3943              keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3944             sta) {
3945                 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3946                                             key_offset, !mcast);
3947                 if (ret) {
3948                         __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3949                         goto end;
3950                 }
3951         }
3952
3953         __set_bit(key_offset, mvm->fw_key_table);
3954
3955 end:
3956         IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3957                       keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3958                       sta ? sta->addr : zero_addr, ret);
3959         return ret;
3960 }
3961
3962 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3963                            struct ieee80211_vif *vif,
3964                            struct ieee80211_sta *sta,
3965                            struct ieee80211_key_conf *keyconf)
3966 {
3967         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3968         struct iwl_mvm_sta *mvm_sta;
3969         u8 sta_id = IWL_INVALID_STA;
3970         int ret, i;
3971
3972         lockdep_assert_held(&mvm->mutex);
3973
3974         /* Get the station from the mvm local station table */
3975         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3976         if (mvm_sta)
3977                 sta_id = mvm_sta->deflink.sta_id;
3978         else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3979                 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;
3980
3981
3982         IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3983                       keyconf->keyidx, sta_id);
3984
3985         if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3986             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3987             keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3988                 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3989
3990         if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3991                 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3992                         keyconf->hw_key_idx);
3993                 return -ENOENT;
3994         }
3995
3996         /* track which key was deleted last */
3997         for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3998                 if (mvm->fw_key_deleted[i] < U8_MAX)
3999                         mvm->fw_key_deleted[i]++;
4000         }
4001         mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
4002
4003         if (sta && !mvm_sta) {
4004                 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
4005                 return 0;
4006         }
4007
4008         ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
4009         if (ret)
4010                 return ret;
4011
4012         /* delete WEP key twice to get rid of (now useless) offset */
4013         if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4014             keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
4015                 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
4016
4017         return ret;
4018 }
4019
4020 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
4021                              struct ieee80211_vif *vif,
4022                              struct ieee80211_key_conf *keyconf,
4023                              struct ieee80211_sta *sta, u32 iv32,
4024                              u16 *phase1key)
4025 {
4026         struct iwl_mvm_sta *mvm_sta;
4027         bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
4028         bool mfp = sta ? sta->mfp : false;
4029
4030         rcu_read_lock();
4031
4032         mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
4033         if (WARN_ON_ONCE(!mvm_sta))
4034                 goto unlock;
4035         iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,
4036                              iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
4037                              mfp);
4038
4039  unlock:
4040         rcu_read_unlock();
4041 }
4042
4043 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
4044                                 struct ieee80211_sta *sta)
4045 {
4046         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4047         struct iwl_mvm_add_sta_cmd cmd = {
4048                 .add_modify = STA_MODE_MODIFY,
4049                 .sta_id = mvmsta->deflink.sta_id,
4050                 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
4051                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4052         };
4053         int ret;
4054
4055         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4056                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4057         if (ret)
4058                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4059 }
4060
4061 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
4062                                        struct ieee80211_sta *sta,
4063                                        enum ieee80211_frame_release_type reason,
4064                                        u16 cnt, u16 tids, bool more_data,
4065                                        bool single_sta_queue)
4066 {
4067         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4068         struct iwl_mvm_add_sta_cmd cmd = {
4069                 .add_modify = STA_MODE_MODIFY,
4070                 .sta_id = mvmsta->deflink.sta_id,
4071                 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
4072                 .sleep_tx_count = cpu_to_le16(cnt),
4073                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4074         };
4075         int tid, ret;
4076         unsigned long _tids = tids;
4077
4078         /* convert TIDs to ACs - we don't support TSPEC so that's OK
4079          * Note that this field is reserved and unused by firmware not
4080          * supporting GO uAPSD, so it's safe to always do this.
4081          */
4082         for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
4083                 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
4084
4085         /* If we're releasing frames from aggregation or dqa queues then check
4086          * if all the queues that we're releasing frames from, combined, have:
4087          *  - more frames than the service period, in which case more_data
4088          *    needs to be set
4089          *  - fewer than 'cnt' frames, in which case we need to adjust the
4090          *    firmware command (but do that unconditionally)
4091          */
4092         if (single_sta_queue) {
4093                 int remaining = cnt;
4094                 int sleep_tx_count;
4095
4096                 spin_lock_bh(&mvmsta->lock);
4097                 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
4098                         struct iwl_mvm_tid_data *tid_data;
4099                         u16 n_queued;
4100
4101                         tid_data = &mvmsta->tid_data[tid];
4102
4103                         n_queued = iwl_mvm_tid_queued(mvm, tid_data);
4104                         if (n_queued > remaining) {
4105                                 more_data = true;
4106                                 remaining = 0;
4107                                 break;
4108                         }
4109                         remaining -= n_queued;
4110                 }
4111                 sleep_tx_count = cnt - remaining;
4112                 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
4113                         mvmsta->sleep_tx_count = sleep_tx_count;
4114                 spin_unlock_bh(&mvmsta->lock);
4115
4116                 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
4117                 if (WARN_ON(cnt - remaining == 0)) {
4118                         ieee80211_sta_eosp(sta);
4119                         return;
4120                 }
4121         }
4122
4123         /* Note: this is ignored by firmware not supporting GO uAPSD */
4124         if (more_data)
4125                 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
4126
4127         if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
4128                 mvmsta->next_status_eosp = true;
4129                 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
4130         } else {
4131                 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
4132         }
4133
4134         /* block the Tx queues until the FW updated the sleep Tx count */
4135         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
4136                                    CMD_ASYNC | CMD_BLOCK_TXQS,
4137                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4138         if (ret)
4139                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4140 }
4141
4142 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
4143                            struct iwl_rx_cmd_buffer *rxb)
4144 {
4145         struct iwl_rx_packet *pkt = rxb_addr(rxb);
4146         struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
4147         struct ieee80211_sta *sta;
4148         u32 sta_id = le32_to_cpu(notif->sta_id);
4149
4150         if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
4151                 return;
4152
4153         rcu_read_lock();
4154         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
4155         if (!IS_ERR_OR_NULL(sta))
4156                 ieee80211_sta_eosp(sta);
4157         rcu_read_unlock();
4158 }
4159
4160 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
4161                                    struct iwl_mvm_sta *mvmsta,
4162                                    bool disable)
4163 {
4164         struct iwl_mvm_add_sta_cmd cmd = {
4165                 .add_modify = STA_MODE_MODIFY,
4166                 .sta_id = mvmsta->deflink.sta_id,
4167                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4168                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4169                 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
4170         };
4171         int ret;
4172
4173         if (mvm->mld_api_is_used) {
4174                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4175                         iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);
4176                 return;
4177         }
4178
4179         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4180                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4181         if (ret)
4182                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4183 }
4184
4185 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
4186                                       struct ieee80211_sta *sta,
4187                                       bool disable)
4188 {
4189         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4190
4191         if (mvm->mld_api_is_used) {
4192                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4193                         iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);
4194                 return;
4195         }
4196
4197         spin_lock_bh(&mvm_sta->lock);
4198
4199         if (mvm_sta->disable_tx == disable) {
4200                 spin_unlock_bh(&mvm_sta->lock);
4201                 return;
4202         }
4203
4204         mvm_sta->disable_tx = disable;
4205
4206         /*
4207          * If sta PS state is handled by mac80211, tell it to start/stop
4208          * queuing tx for this station.
4209          */
4210         if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
4211                 ieee80211_sta_block_awake(mvm->hw, sta, disable);
4212
4213         iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
4214
4215         spin_unlock_bh(&mvm_sta->lock);
4216 }
4217
4218 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
4219                                               struct iwl_mvm_vif *mvmvif,
4220                                               struct iwl_mvm_int_sta *sta,
4221                                               bool disable)
4222 {
4223         u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
4224         struct iwl_mvm_add_sta_cmd cmd = {
4225                 .add_modify = STA_MODE_MODIFY,
4226                 .sta_id = sta->sta_id,
4227                 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
4228                 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
4229                 .mac_id_n_color = cpu_to_le32(id),
4230         };
4231         int ret;
4232
4233         ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
4234                                    iwl_mvm_add_sta_cmd_size(mvm), &cmd);
4235         if (ret)
4236                 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
4237 }
4238
4239 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
4240                                        struct iwl_mvm_vif *mvmvif,
4241                                        bool disable)
4242 {
4243         struct ieee80211_sta *sta;
4244         struct iwl_mvm_sta *mvm_sta;
4245         int i;
4246
4247         if (mvm->mld_api_is_used) {
4248                 if (!iwl_mvm_has_no_host_disable_tx(mvm))
4249                         iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,
4250                                                               disable);
4251                 return;
4252         }
4253
4254         rcu_read_lock();
4255
4256         /* Block/unblock all the stations of the given mvmvif */
4257         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4258                 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
4259                 if (IS_ERR_OR_NULL(sta))
4260                         continue;
4261
4262                 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4263                 if (mvm_sta->mac_id_n_color !=
4264                     FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
4265                         continue;
4266
4267                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
4268         }
4269
4270         rcu_read_unlock();
4271
4272         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
4273                 return;
4274
4275         /* Need to block/unblock also multicast station */
4276         if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA)
4277                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4278                                                   &mvmvif->deflink.mcast_sta,
4279                                                   disable);
4280
4281         /*
4282          * Only unblock the broadcast station (FW blocks it for immediate
4283          * quiet, not the driver)
4284          */
4285         if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA)
4286                 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
4287                                                   &mvmvif->deflink.bcast_sta,
4288                                                   disable);
4289 }
4290
4291 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
4292 {
4293         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4294         struct iwl_mvm_sta *mvmsta;
4295
4296         rcu_read_lock();
4297
4298         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);
4299
4300         if (mvmsta)
4301                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
4302
4303         rcu_read_unlock();
4304 }
4305
4306 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
4307 {
4308         u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
4309
4310         /*
4311          * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
4312          * to align the wrap around of ssn so we compare relevant values.
4313          */
4314         if (mvm->trans->trans_cfg->gen2)
4315                 sn &= 0xff;
4316
4317         return ieee80211_sn_sub(sn, tid_data->next_reclaimed);
4318 }
4319
4320 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
4321                          struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,
4322                          u8 *key, u32 key_len,
4323                          struct ieee80211_key_conf *keyconf)
4324 {
4325         int ret;
4326         u16 queue;
4327         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4328         unsigned int wdg_timeout =
4329                 iwl_mvm_get_wd_timeout(mvm, vif);
4330         bool mld = iwl_mvm_has_mld_api(mvm->fw);
4331         u32 type = IWL_STA_LINK;
4332
4333         if (mld)
4334                 type = STATION_TYPE_PEER;
4335
4336         ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,
4337                                        NL80211_IFTYPE_UNSPECIFIED, type);
4338         if (ret)
4339                 return ret;
4340
4341         if (mld)
4342                 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,
4343                                                          mvmvif->deflink.fw_link_id,
4344                                                          &queue,
4345                                                          IWL_MAX_TID_COUNT,
4346                                                          &wdg_timeout);
4347         else
4348                 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,
4349                                                      mvmvif->color, addr, sta,
4350                                                      &queue,
4351                                                      IWL_MVM_TX_FIFO_BE);
4352         if (ret)
4353                 goto out;
4354
4355         keyconf->cipher = cipher;
4356         memcpy(keyconf->key, key, key_len);
4357         keyconf->keylen = key_len;
4358         keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;
4359
4360         if (mld) {
4361                 /* The MFP flag is set according to the station mfp field. Since
4362                  * we don't have a station, set it manually.
4363                  */
4364                 u32 key_flags =
4365                         iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |
4366                         IWL_SEC_KEY_FLAG_MFP;
4367                 u32 sta_mask = BIT(sta->sta_id);
4368
4369                 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);
4370         } else {
4371                 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,
4372                                            0, NULL, 0, 0, true);
4373         }
4374
4375 out:
4376         if (ret)
4377                 iwl_mvm_dealloc_int_sta(mvm, sta);
4378         return ret;
4379 }
4380
4381 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,
4382                                    struct ieee80211_vif *vif,
4383                                    u32 id)
4384 {
4385         struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {
4386                 .id = cpu_to_le32(id),
4387         };
4388         int ret;
4389
4390         ret = iwl_mvm_send_cmd_pdu(mvm,
4391                                    WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),
4392                                    CMD_ASYNC,
4393                                    sizeof(cancel_channel_switch_cmd),
4394                                    &cancel_channel_switch_cmd);
4395         if (ret)
4396                 IWL_ERR(mvm, "Failed to cancel the channel switch\n");
4397 }
4398
4399 static int iwl_mvm_fw_sta_id_to_fw_link_id(struct iwl_mvm_vif *mvmvif,
4400                                            u8 fw_sta_id)
4401 {
4402         struct ieee80211_link_sta *link_sta =
4403                 rcu_dereference(mvmvif->mvm->fw_id_to_link_sta[fw_sta_id]);
4404         struct iwl_mvm_vif_link_info *link;
4405
4406         if (WARN_ON_ONCE(!link_sta))
4407                 return -EINVAL;
4408
4409         link = mvmvif->link[link_sta->link_id];
4410
4411         if (WARN_ON_ONCE(!link))
4412                 return -EINVAL;
4413
4414         return link->fw_link_id;
4415 }
4416
4417 #define IWL_MVM_TPT_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ)
4418
4419 void iwl_mvm_count_mpdu(struct iwl_mvm_sta *mvm_sta, u8 fw_sta_id, u32 count,
4420                         bool tx, int queue)
4421 {
4422         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvm_sta->vif);
4423         struct iwl_mvm *mvm = mvmvif->mvm;
4424         struct iwl_mvm_tpt_counter *queue_counter;
4425         struct iwl_mvm_mpdu_counter *link_counter;
4426         u32 total_mpdus = 0;
4427         int fw_link_id;
4428
4429         /* Count only for a BSS sta, and only when EMLSR is possible */
4430         if (!mvm_sta->mpdu_counters)
4431                 return;
4432
4433         /* Map sta id to link id */
4434         fw_link_id = iwl_mvm_fw_sta_id_to_fw_link_id(mvmvif, fw_sta_id);
4435         if (fw_link_id < 0)
4436                 return;
4437
4438         queue_counter = &mvm_sta->mpdu_counters[queue];
4439         link_counter = &queue_counter->per_link[fw_link_id];
4440
4441         spin_lock_bh(&queue_counter->lock);
4442
4443         if (tx)
4444                 link_counter->tx += count;
4445         else
4446                 link_counter->rx += count;
4447
4448         /*
4449          * When not in EMLSR, the window and the decision to enter EMLSR are
4450          * handled during counting, when in EMLSR - in the statistics flow
4451          */
4452         if (mvmvif->esr_active)
4453                 goto out;
4454
4455         if (time_is_before_jiffies(queue_counter->window_start +
4456                                         IWL_MVM_TPT_COUNT_WINDOW)) {
4457                 memset(queue_counter->per_link, 0,
4458                        sizeof(queue_counter->per_link));
4459                 queue_counter->window_start = jiffies;
4460
4461                 IWL_DEBUG_INFO(mvm, "MPDU counters are cleared\n");
4462         }
4463
4464         for (int i = 0; i < IWL_FW_MAX_LINK_ID; i++)
4465                 total_mpdus += tx ? queue_counter->per_link[i].tx :
4466                                     queue_counter->per_link[i].rx;
4467
4468         if (total_mpdus > IWL_MVM_ENTER_ESR_TPT_THRESH)
4469                 wiphy_work_queue(mvmvif->mvm->hw->wiphy,
4470                                  &mvmvif->unblock_esr_tpt_wk);
4471
4472 out:
4473         spin_unlock_bh(&queue_counter->lock);
4474 }