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 #if defined(__FreeBSD__) 9 #include <linux/cache.h> 10 #endif 11 12 #include "mvm.h" 13 #include "sta.h" 14 #include "rs.h" 15 16 /* 17 * New version of ADD_STA_sta command added new fields at the end of the 18 * structure, so sending the size of the relevant API's structure is enough to 19 * support both API versions. 20 */ 21 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 22 { 23 if (iwl_mvm_has_new_rx_api(mvm) || 24 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 25 return sizeof(struct iwl_mvm_add_sta_cmd); 26 else 27 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 28 } 29 30 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 31 { 32 int sta_id; 33 u32 reserved_ids = 0; 34 35 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 36 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 37 38 lockdep_assert_held(&mvm->mutex); 39 40 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 41 if (iftype != NL80211_IFTYPE_STATION) 42 reserved_ids = BIT(0); 43 44 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 45 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 46 if (BIT(sta_id) & reserved_ids) 47 continue; 48 49 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 50 lockdep_is_held(&mvm->mutex))) 51 return sta_id; 52 } 53 return IWL_MVM_INVALID_STA; 54 } 55 56 /* Calculate the ampdu density and max size */ 57 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 58 struct ieee80211_bss_conf *link_conf, 59 u32 *_agg_size) 60 { 61 u32 agg_size = 0, mpdu_dens = 0; 62 63 if (WARN_ON(!link_sta)) 64 return 0; 65 66 /* Note that we always use only legacy & highest supported PPDUs, so 67 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating 68 * the maximum A-MPDU size of various PPDU types in different bands, 69 * we only need to worry about the highest supported PPDU type here. 70 */ 71 72 if (link_sta->ht_cap.ht_supported) { 73 agg_size = link_sta->ht_cap.ampdu_factor; 74 mpdu_dens = link_sta->ht_cap.ampdu_density; 75 } 76 77 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) { 78 /* overwrite HT values on 6 GHz */ 79 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 80 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 81 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 82 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 83 } else if (link_sta->vht_cap.vht_supported) { 84 /* if VHT supported overwrite HT value */ 85 agg_size = u32_get_bits(link_sta->vht_cap.cap, 86 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); 87 } 88 89 /* D6.0 10.12.2 A-MPDU length limit rules 90 * A STA indicates the maximum length of the A-MPDU preEOF padding 91 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 92 * Exponent field in its HT Capabilities, VHT Capabilities, 93 * and HE 6 GHz Band Capabilities elements (if present) and the 94 * Maximum AMPDU Length Exponent Extension field in its HE 95 * Capabilities element 96 */ 97 if (link_sta->he_cap.has_he) 98 agg_size += 99 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 100 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 101 102 if (link_sta->eht_cap.has_eht) 103 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], 104 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); 105 106 /* Limit to max A-MPDU supported by FW */ 107 agg_size = min_t(u32, agg_size, 108 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); 109 110 *_agg_size = agg_size; 111 return mpdu_dens; 112 } 113 114 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 115 { 116 u8 uapsd_acs = 0; 117 118 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 119 uapsd_acs |= BIT(AC_BK); 120 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 121 uapsd_acs |= BIT(AC_BE); 122 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 123 uapsd_acs |= BIT(AC_VI); 124 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 125 uapsd_acs |= BIT(AC_VO); 126 127 return uapsd_acs | uapsd_acs << 4; 128 } 129 130 /* send station add/update command to firmware */ 131 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 132 bool update, unsigned int flags) 133 { 134 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 135 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 136 .sta_id = mvm_sta->deflink.sta_id, 137 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 138 .add_modify = update ? 1 : 0, 139 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 140 STA_FLG_MIMO_EN_MSK | 141 STA_FLG_RTS_MIMO_PROT), 142 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 143 }; 144 int ret; 145 u32 status; 146 u32 agg_size = 0, mpdu_dens = 0; 147 148 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 149 add_sta_cmd.station_type = mvm_sta->sta_type; 150 151 if (!update || (flags & STA_MODIFY_QUEUES)) { 152 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 153 154 if (!iwl_mvm_has_new_tx_api(mvm)) { 155 add_sta_cmd.tfd_queue_msk = 156 cpu_to_le32(mvm_sta->tfd_queue_msk); 157 158 if (flags & STA_MODIFY_QUEUES) 159 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 160 } else { 161 WARN_ON(flags & STA_MODIFY_QUEUES); 162 } 163 } 164 165 switch (sta->deflink.bandwidth) { 166 case IEEE80211_STA_RX_BW_320: 167 case IEEE80211_STA_RX_BW_160: 168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 169 fallthrough; 170 case IEEE80211_STA_RX_BW_80: 171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 172 fallthrough; 173 case IEEE80211_STA_RX_BW_40: 174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 175 fallthrough; 176 case IEEE80211_STA_RX_BW_20: 177 if (sta->deflink.ht_cap.ht_supported) 178 add_sta_cmd.station_flags |= 179 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 180 break; 181 } 182 183 switch (sta->deflink.rx_nss) { 184 case 1: 185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 186 break; 187 case 2: 188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 189 break; 190 case 3 ... 8: 191 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 192 break; 193 } 194 195 switch (sta->deflink.smps_mode) { 196 case IEEE80211_SMPS_AUTOMATIC: 197 case IEEE80211_SMPS_NUM_MODES: 198 WARN_ON(1); 199 break; 200 case IEEE80211_SMPS_STATIC: 201 /* override NSS */ 202 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 204 break; 205 case IEEE80211_SMPS_DYNAMIC: 206 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 207 break; 208 case IEEE80211_SMPS_OFF: 209 /* nothing */ 210 break; 211 } 212 213 if (sta->deflink.ht_cap.ht_supported || 214 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ) 215 add_sta_cmd.station_flags_msk |= 216 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 217 STA_FLG_AGG_MPDU_DENS_MSK); 218 219 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 220 &mvm_sta->vif->bss_conf, 221 &agg_size); 222 add_sta_cmd.station_flags |= 223 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 224 add_sta_cmd.station_flags |= 225 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 226 227 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 228 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 229 230 if (sta->wme) { 231 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 232 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 233 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 234 } 235 236 status = ADD_STA_SUCCESS; 237 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 238 iwl_mvm_add_sta_cmd_size(mvm), 239 &add_sta_cmd, &status); 240 if (ret) 241 return ret; 242 243 switch (status & IWL_ADD_STA_STATUS_MASK) { 244 case ADD_STA_SUCCESS: 245 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 246 break; 247 default: 248 ret = -EIO; 249 IWL_ERR(mvm, "ADD_STA failed\n"); 250 break; 251 } 252 253 return ret; 254 } 255 256 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 257 { 258 struct iwl_mvm_baid_data *data = 259 from_timer(data, t, session_timer); 260 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 261 struct iwl_mvm_baid_data *ba_data; 262 struct ieee80211_sta *sta; 263 struct iwl_mvm_sta *mvm_sta; 264 unsigned long timeout; 265 unsigned int sta_id; 266 267 rcu_read_lock(); 268 269 ba_data = rcu_dereference(*rcu_ptr); 270 271 if (WARN_ON(!ba_data)) 272 goto unlock; 273 274 if (!ba_data->timeout) 275 goto unlock; 276 277 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 278 if (time_is_after_jiffies(timeout)) { 279 mod_timer(&ba_data->session_timer, timeout); 280 goto unlock; 281 } 282 283 /* Timer expired */ 284 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 285 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 286 287 /* 288 * sta should be valid unless the following happens: 289 * The firmware asserts which triggers a reconfig flow, but 290 * the reconfig fails before we set the pointer to sta into 291 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 292 * A-MDPU and hence the timer continues to run. Then, the 293 * timer expires and sta is NULL. 294 */ 295 if (IS_ERR_OR_NULL(sta)) 296 goto unlock; 297 298 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 299 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 300 sta->addr, ba_data->tid); 301 unlock: 302 rcu_read_unlock(); 303 } 304 305 /* Disable aggregations for a bitmap of TIDs for a given station */ 306 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 307 unsigned long disable_agg_tids, 308 bool remove_queue) 309 { 310 struct iwl_mvm_add_sta_cmd cmd = {}; 311 struct ieee80211_sta *sta; 312 struct iwl_mvm_sta *mvmsta; 313 u32 status; 314 u8 sta_id; 315 316 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 317 return -EINVAL; 318 319 sta_id = mvm->queue_info[queue].ra_sta_id; 320 321 rcu_read_lock(); 322 323 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 324 325 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 326 rcu_read_unlock(); 327 return -EINVAL; 328 } 329 330 mvmsta = iwl_mvm_sta_from_mac80211(sta); 331 332 mvmsta->tid_disable_agg |= disable_agg_tids; 333 334 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 335 cmd.sta_id = mvmsta->deflink.sta_id; 336 cmd.add_modify = STA_MODE_MODIFY; 337 cmd.modify_mask = STA_MODIFY_QUEUES; 338 if (disable_agg_tids) 339 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 340 if (remove_queue) 341 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 342 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 343 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 344 345 rcu_read_unlock(); 346 347 /* Notify FW of queue removal from the STA queues */ 348 status = ADD_STA_SUCCESS; 349 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 350 iwl_mvm_add_sta_cmd_size(mvm), 351 &cmd, &status); 352 } 353 354 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 355 int sta_id, u16 *queueptr, u8 tid) 356 { 357 int queue = *queueptr; 358 struct iwl_scd_txq_cfg_cmd cmd = { 359 .scd_queue = queue, 360 .action = SCD_CFG_DISABLE_QUEUE, 361 }; 362 int ret; 363 364 lockdep_assert_held(&mvm->mutex); 365 366 if (iwl_mvm_has_new_tx_api(mvm)) { 367 if (mvm->sta_remove_requires_queue_remove) { 368 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 369 SCD_QUEUE_CONFIG_CMD); 370 struct iwl_scd_queue_cfg_cmd remove_cmd = { 371 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 372 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 373 }; 374 375 if (tid == IWL_MAX_TID_COUNT) 376 tid = IWL_MGMT_TID; 377 378 remove_cmd.u.remove.tid = cpu_to_le32(tid); 379 380 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 381 sizeof(remove_cmd), 382 &remove_cmd); 383 } else { 384 ret = 0; 385 } 386 387 iwl_trans_txq_free(mvm->trans, queue); 388 *queueptr = IWL_MVM_INVALID_QUEUE; 389 390 return ret; 391 } 392 393 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 394 return 0; 395 396 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 397 398 cmd.action = mvm->queue_info[queue].tid_bitmap ? 399 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 400 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 401 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 402 403 IWL_DEBUG_TX_QUEUES(mvm, 404 "Disabling TXQ #%d tids=0x%x\n", 405 queue, 406 mvm->queue_info[queue].tid_bitmap); 407 408 /* If the queue is still enabled - nothing left to do in this func */ 409 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 410 return 0; 411 412 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 413 cmd.tid = mvm->queue_info[queue].txq_tid; 414 415 /* Make sure queue info is correct even though we overwrite it */ 416 WARN(mvm->queue_info[queue].tid_bitmap, 417 "TXQ #%d info out-of-sync - tids=0x%x\n", 418 queue, mvm->queue_info[queue].tid_bitmap); 419 420 /* If we are here - the queue is freed and we can zero out these vals */ 421 mvm->queue_info[queue].tid_bitmap = 0; 422 423 if (sta) { 424 struct iwl_mvm_txq *mvmtxq = 425 iwl_mvm_txq_from_tid(sta, tid); 426 427 spin_lock_bh(&mvm->add_stream_lock); 428 list_del_init(&mvmtxq->list); 429 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 430 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 431 spin_unlock_bh(&mvm->add_stream_lock); 432 } 433 434 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 435 mvm->queue_info[queue].reserved = false; 436 437 iwl_trans_txq_disable(mvm->trans, queue, false); 438 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 439 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 440 441 if (ret) 442 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 443 queue, ret); 444 return ret; 445 } 446 447 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 448 { 449 struct ieee80211_sta *sta; 450 struct iwl_mvm_sta *mvmsta; 451 unsigned long tid_bitmap; 452 unsigned long agg_tids = 0; 453 u8 sta_id; 454 int tid; 455 456 lockdep_assert_held(&mvm->mutex); 457 458 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 459 return -EINVAL; 460 461 sta_id = mvm->queue_info[queue].ra_sta_id; 462 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 463 464 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 465 lockdep_is_held(&mvm->mutex)); 466 467 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 468 return -EINVAL; 469 470 mvmsta = iwl_mvm_sta_from_mac80211(sta); 471 472 spin_lock_bh(&mvmsta->lock); 473 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 474 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 475 agg_tids |= BIT(tid); 476 } 477 spin_unlock_bh(&mvmsta->lock); 478 479 return agg_tids; 480 } 481 482 /* 483 * Remove a queue from a station's resources. 484 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 485 * doesn't disable the queue 486 */ 487 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 488 { 489 struct ieee80211_sta *sta; 490 struct iwl_mvm_sta *mvmsta; 491 unsigned long tid_bitmap; 492 unsigned long disable_agg_tids = 0; 493 u8 sta_id; 494 int tid; 495 496 lockdep_assert_held(&mvm->mutex); 497 498 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 499 return -EINVAL; 500 501 sta_id = mvm->queue_info[queue].ra_sta_id; 502 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 503 504 rcu_read_lock(); 505 506 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 507 508 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 509 rcu_read_unlock(); 510 return 0; 511 } 512 513 mvmsta = iwl_mvm_sta_from_mac80211(sta); 514 515 spin_lock_bh(&mvmsta->lock); 516 /* Unmap MAC queues and TIDs from this queue */ 517 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 518 struct iwl_mvm_txq *mvmtxq = 519 iwl_mvm_txq_from_tid(sta, tid); 520 521 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 522 disable_agg_tids |= BIT(tid); 523 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 524 525 spin_lock_bh(&mvm->add_stream_lock); 526 list_del_init(&mvmtxq->list); 527 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 528 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 529 spin_unlock_bh(&mvm->add_stream_lock); 530 } 531 532 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 533 spin_unlock_bh(&mvmsta->lock); 534 535 rcu_read_unlock(); 536 537 /* 538 * The TX path may have been using this TXQ_ID from the tid_data, 539 * so make sure it's no longer running so that we can safely reuse 540 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 541 * above, but nothing guarantees we've stopped using them. Thus, 542 * without this, we could get to iwl_mvm_disable_txq() and remove 543 * the queue while still sending frames to it. 544 */ 545 synchronize_net(); 546 547 return disable_agg_tids; 548 } 549 550 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 551 struct ieee80211_sta *old_sta, 552 u8 new_sta_id) 553 { 554 struct iwl_mvm_sta *mvmsta; 555 u8 sta_id, tid; 556 unsigned long disable_agg_tids = 0; 557 bool same_sta; 558 u16 queue_tmp = queue; 559 int ret; 560 561 lockdep_assert_held(&mvm->mutex); 562 563 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 564 return -EINVAL; 565 566 sta_id = mvm->queue_info[queue].ra_sta_id; 567 tid = mvm->queue_info[queue].txq_tid; 568 569 same_sta = sta_id == new_sta_id; 570 571 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 572 if (WARN_ON(!mvmsta)) 573 return -EINVAL; 574 575 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 576 /* Disable the queue */ 577 if (disable_agg_tids) 578 iwl_mvm_invalidate_sta_queue(mvm, queue, 579 disable_agg_tids, false); 580 581 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 582 if (ret) { 583 IWL_ERR(mvm, 584 "Failed to free inactive queue %d (ret=%d)\n", 585 queue, ret); 586 587 return ret; 588 } 589 590 /* If TXQ is allocated to another STA, update removal in FW */ 591 if (!same_sta) 592 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 593 594 return 0; 595 } 596 597 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 598 unsigned long tfd_queue_mask, u8 ac) 599 { 600 int queue = 0; 601 u8 ac_to_queue[IEEE80211_NUM_ACS]; 602 int i; 603 604 /* 605 * This protects us against grabbing a queue that's being reconfigured 606 * by the inactivity checker. 607 */ 608 lockdep_assert_held(&mvm->mutex); 609 610 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 611 return -EINVAL; 612 613 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 614 615 /* See what ACs the existing queues for this STA have */ 616 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 617 /* Only DATA queues can be shared */ 618 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 619 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 620 continue; 621 622 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 623 } 624 625 /* 626 * The queue to share is chosen only from DATA queues as follows (in 627 * descending priority): 628 * 1. An AC_BE queue 629 * 2. Same AC queue 630 * 3. Highest AC queue that is lower than new AC 631 * 4. Any existing AC (there always is at least 1 DATA queue) 632 */ 633 634 /* Priority 1: An AC_BE queue */ 635 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 636 queue = ac_to_queue[IEEE80211_AC_BE]; 637 /* Priority 2: Same AC queue */ 638 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 639 queue = ac_to_queue[ac]; 640 /* Priority 3a: If new AC is VO and VI exists - use VI */ 641 else if (ac == IEEE80211_AC_VO && 642 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 643 queue = ac_to_queue[IEEE80211_AC_VI]; 644 /* Priority 3b: No BE so only AC less than the new one is BK */ 645 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 646 queue = ac_to_queue[IEEE80211_AC_BK]; 647 /* Priority 4a: No BE nor BK - use VI if exists */ 648 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 649 queue = ac_to_queue[IEEE80211_AC_VI]; 650 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 651 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 652 queue = ac_to_queue[IEEE80211_AC_VO]; 653 654 /* Make sure queue found (or not) is legal */ 655 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 656 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 657 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 658 IWL_ERR(mvm, "No DATA queues available to share\n"); 659 return -ENOSPC; 660 } 661 662 return queue; 663 } 664 665 /* Re-configure the SCD for a queue that has already been configured */ 666 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 667 int sta_id, int tid, int frame_limit, u16 ssn) 668 { 669 struct iwl_scd_txq_cfg_cmd cmd = { 670 .scd_queue = queue, 671 .action = SCD_CFG_ENABLE_QUEUE, 672 .window = frame_limit, 673 .sta_id = sta_id, 674 .ssn = cpu_to_le16(ssn), 675 .tx_fifo = fifo, 676 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 677 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 678 .tid = tid, 679 }; 680 int ret; 681 682 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 683 return -EINVAL; 684 685 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 686 "Trying to reconfig unallocated queue %d\n", queue)) 687 return -ENXIO; 688 689 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 690 691 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 692 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 693 queue, fifo, ret); 694 695 return ret; 696 } 697 698 /* 699 * If a given queue has a higher AC than the TID stream that is being compared 700 * to, the queue needs to be redirected to the lower AC. This function does that 701 * in such a case, otherwise - if no redirection required - it does nothing, 702 * unless the %force param is true. 703 */ 704 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 705 int ac, int ssn, unsigned int wdg_timeout, 706 bool force, struct iwl_mvm_txq *txq) 707 { 708 struct iwl_scd_txq_cfg_cmd cmd = { 709 .scd_queue = queue, 710 .action = SCD_CFG_DISABLE_QUEUE, 711 }; 712 bool shared_queue; 713 int ret; 714 715 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 716 return -EINVAL; 717 718 /* 719 * If the AC is lower than current one - FIFO needs to be redirected to 720 * the lowest one of the streams in the queue. Check if this is needed 721 * here. 722 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 723 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 724 * we need to check if the numerical value of X is LARGER than of Y. 725 */ 726 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 727 IWL_DEBUG_TX_QUEUES(mvm, 728 "No redirection needed on TXQ #%d\n", 729 queue); 730 return 0; 731 } 732 733 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 734 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 735 cmd.tid = mvm->queue_info[queue].txq_tid; 736 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 737 738 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 739 queue, iwl_mvm_ac_to_tx_fifo[ac]); 740 741 /* Stop the queue and wait for it to empty */ 742 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 743 744 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 745 if (ret) { 746 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 747 queue); 748 ret = -EIO; 749 goto out; 750 } 751 752 /* Before redirecting the queue we need to de-activate it */ 753 iwl_trans_txq_disable(mvm->trans, queue, false); 754 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 755 if (ret) 756 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 757 ret); 758 759 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 760 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 761 762 /* Update the TID "owner" of the queue */ 763 mvm->queue_info[queue].txq_tid = tid; 764 765 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 766 767 /* Redirect to lower AC */ 768 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 769 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 770 771 /* Update AC marking of the queue */ 772 mvm->queue_info[queue].mac80211_ac = ac; 773 774 /* 775 * Mark queue as shared in transport if shared 776 * Note this has to be done after queue enablement because enablement 777 * can also set this value, and there is no indication there to shared 778 * queues 779 */ 780 if (shared_queue) 781 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 782 783 out: 784 /* Continue using the queue */ 785 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 786 787 return ret; 788 } 789 790 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 791 u8 minq, u8 maxq) 792 { 793 int i; 794 795 lockdep_assert_held(&mvm->mutex); 796 797 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 798 "max queue %d >= num_of_queues (%d)", maxq, 799 mvm->trans->trans_cfg->base_params->num_of_queues)) 800 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 801 802 /* This should not be hit with new TX path */ 803 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 804 return -ENOSPC; 805 806 /* Start by looking for a free queue */ 807 for (i = minq; i <= maxq; i++) 808 if (mvm->queue_info[i].tid_bitmap == 0 && 809 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 810 return i; 811 812 return -ENOSPC; 813 } 814 815 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 816 { 817 int max_size = IWL_DEFAULT_QUEUE_SIZE; 818 unsigned int link_id; 819 820 /* this queue isn't used for traffic (cab_queue) */ 821 if (!sta) 822 return IWL_MGMT_QUEUE_SIZE; 823 824 rcu_read_lock(); 825 826 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 827 struct ieee80211_link_sta *link = 828 rcu_dereference(sta->link[link_id]); 829 830 if (!link) 831 continue; 832 833 /* support for 512 ba size */ 834 if (link->eht_cap.has_eht && 835 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 836 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 837 838 /* support for 256 ba size */ 839 if (link->he_cap.has_he && 840 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 841 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 842 } 843 844 rcu_read_unlock(); 845 return max_size; 846 } 847 848 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 849 struct ieee80211_sta *sta, 850 u8 sta_id, u8 tid, unsigned int timeout) 851 { 852 int queue, size; 853 u32 sta_mask = 0; 854 855 if (tid == IWL_MAX_TID_COUNT) { 856 tid = IWL_MGMT_TID; 857 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 858 mvm->trans->cfg->min_txq_size); 859 } else { 860 size = iwl_mvm_get_queue_size(sta); 861 } 862 863 if (sta) { 864 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 865 struct ieee80211_link_sta *link_sta; 866 unsigned int link_id; 867 868 rcu_read_lock(); 869 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) { 870 struct iwl_mvm_link_sta *link = 871 rcu_dereference_protected(mvmsta->link[link_id], 872 lockdep_is_held(&mvm->mutex)); 873 874 if (!link) 875 continue; 876 877 sta_mask |= BIT(link->sta_id); 878 } 879 rcu_read_unlock(); 880 } else { 881 sta_mask |= BIT(sta_id); 882 } 883 884 if (!sta_mask) 885 return -EINVAL; 886 887 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 888 tid, size, timeout); 889 890 if (queue >= 0) 891 IWL_DEBUG_TX_QUEUES(mvm, 892 "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 893 queue, sta_mask, tid); 894 895 return queue; 896 } 897 898 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 899 struct ieee80211_sta *sta, u8 ac, 900 int tid) 901 { 902 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 903 struct iwl_mvm_txq *mvmtxq = 904 iwl_mvm_txq_from_tid(sta, tid); 905 unsigned int wdg_timeout = 906 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 907 int queue = -1; 908 909 lockdep_assert_held(&mvm->mutex); 910 911 IWL_DEBUG_TX_QUEUES(mvm, 912 "Allocating queue for sta %d on tid %d\n", 913 mvmsta->deflink.sta_id, tid); 914 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 915 tid, wdg_timeout); 916 if (queue < 0) 917 return queue; 918 919 mvmtxq->txq_id = queue; 920 mvm->tvqm_info[queue].txq_tid = tid; 921 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 922 923 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 924 925 spin_lock_bh(&mvmsta->lock); 926 mvmsta->tid_data[tid].txq_id = queue; 927 spin_unlock_bh(&mvmsta->lock); 928 929 return 0; 930 } 931 932 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 933 struct ieee80211_sta *sta, 934 int queue, u8 sta_id, u8 tid) 935 { 936 bool enable_queue = true; 937 938 /* Make sure this TID isn't already enabled */ 939 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 940 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 941 queue, tid); 942 return false; 943 } 944 945 /* Update mappings and refcounts */ 946 if (mvm->queue_info[queue].tid_bitmap) 947 enable_queue = false; 948 949 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 950 mvm->queue_info[queue].ra_sta_id = sta_id; 951 952 if (enable_queue) { 953 if (tid != IWL_MAX_TID_COUNT) 954 mvm->queue_info[queue].mac80211_ac = 955 tid_to_mac80211_ac[tid]; 956 else 957 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 958 959 mvm->queue_info[queue].txq_tid = tid; 960 } 961 962 if (sta) { 963 struct iwl_mvm_txq *mvmtxq = 964 iwl_mvm_txq_from_tid(sta, tid); 965 966 mvmtxq->txq_id = queue; 967 } 968 969 IWL_DEBUG_TX_QUEUES(mvm, 970 "Enabling TXQ #%d tids=0x%x\n", 971 queue, mvm->queue_info[queue].tid_bitmap); 972 973 return enable_queue; 974 } 975 976 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 977 int queue, u16 ssn, 978 const struct iwl_trans_txq_scd_cfg *cfg, 979 unsigned int wdg_timeout) 980 { 981 struct iwl_scd_txq_cfg_cmd cmd = { 982 .scd_queue = queue, 983 .action = SCD_CFG_ENABLE_QUEUE, 984 .window = cfg->frame_limit, 985 .sta_id = cfg->sta_id, 986 .ssn = cpu_to_le16(ssn), 987 .tx_fifo = cfg->fifo, 988 .aggregate = cfg->aggregate, 989 .tid = cfg->tid, 990 }; 991 bool inc_ssn; 992 993 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 994 return false; 995 996 /* Send the enabling command if we need to */ 997 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 998 return false; 999 1000 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 1001 NULL, wdg_timeout); 1002 if (inc_ssn) 1003 le16_add_cpu(&cmd.ssn, 1); 1004 1005 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1006 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1007 1008 return inc_ssn; 1009 } 1010 1011 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1012 { 1013 struct iwl_scd_txq_cfg_cmd cmd = { 1014 .scd_queue = queue, 1015 .action = SCD_CFG_UPDATE_QUEUE_TID, 1016 }; 1017 int tid; 1018 unsigned long tid_bitmap; 1019 int ret; 1020 1021 lockdep_assert_held(&mvm->mutex); 1022 1023 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1024 return; 1025 1026 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1027 1028 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1029 return; 1030 1031 /* Find any TID for queue */ 1032 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1033 cmd.tid = tid; 1034 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1035 1036 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1037 if (ret) { 1038 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1039 queue, ret); 1040 return; 1041 } 1042 1043 mvm->queue_info[queue].txq_tid = tid; 1044 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1045 queue, tid); 1046 } 1047 1048 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1049 { 1050 struct ieee80211_sta *sta; 1051 struct iwl_mvm_sta *mvmsta; 1052 u8 sta_id; 1053 int tid = -1; 1054 unsigned long tid_bitmap; 1055 unsigned int wdg_timeout; 1056 int ssn; 1057 int ret = true; 1058 1059 /* queue sharing is disabled on new TX path */ 1060 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1061 return; 1062 1063 lockdep_assert_held(&mvm->mutex); 1064 1065 sta_id = mvm->queue_info[queue].ra_sta_id; 1066 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1067 1068 /* Find TID for queue, and make sure it is the only one on the queue */ 1069 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1070 if (tid_bitmap != BIT(tid)) { 1071 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1072 queue, tid_bitmap); 1073 return; 1074 } 1075 1076 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1077 tid); 1078 1079 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1080 lockdep_is_held(&mvm->mutex)); 1081 1082 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1083 return; 1084 1085 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1086 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1087 1088 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1089 1090 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1091 tid_to_mac80211_ac[tid], ssn, 1092 wdg_timeout, true, 1093 iwl_mvm_txq_from_tid(sta, tid)); 1094 if (ret) { 1095 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1096 return; 1097 } 1098 1099 /* If aggs should be turned back on - do it */ 1100 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1101 struct iwl_mvm_add_sta_cmd cmd = {0}; 1102 1103 mvmsta->tid_disable_agg &= ~BIT(tid); 1104 1105 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1106 cmd.sta_id = mvmsta->deflink.sta_id; 1107 cmd.add_modify = STA_MODE_MODIFY; 1108 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1109 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1110 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1111 1112 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1113 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1114 if (!ret) { 1115 IWL_DEBUG_TX_QUEUES(mvm, 1116 "TXQ #%d is now aggregated again\n", 1117 queue); 1118 1119 /* Mark queue intenally as aggregating again */ 1120 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1121 } 1122 } 1123 1124 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1125 } 1126 1127 /* 1128 * Remove inactive TIDs of a given queue. 1129 * If all queue TIDs are inactive - mark the queue as inactive 1130 * If only some the queue TIDs are inactive - unmap them from the queue 1131 * 1132 * Returns %true if all TIDs were removed and the queue could be reused. 1133 */ 1134 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1135 struct iwl_mvm_sta *mvmsta, int queue, 1136 unsigned long tid_bitmap, 1137 unsigned long *unshare_queues, 1138 unsigned long *changetid_queues) 1139 { 1140 unsigned int tid; 1141 1142 lockdep_assert_held(&mvmsta->lock); 1143 lockdep_assert_held(&mvm->mutex); 1144 1145 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1146 return false; 1147 1148 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1149 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1150 /* If some TFDs are still queued - don't mark TID as inactive */ 1151 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1152 tid_bitmap &= ~BIT(tid); 1153 1154 /* Don't mark as inactive any TID that has an active BA */ 1155 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1156 tid_bitmap &= ~BIT(tid); 1157 } 1158 1159 /* If all TIDs in the queue are inactive - return it can be reused */ 1160 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1161 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1162 return true; 1163 } 1164 1165 /* 1166 * If we are here, this is a shared queue and not all TIDs timed-out. 1167 * Remove the ones that did. 1168 */ 1169 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1170 u16 q_tid_bitmap; 1171 1172 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1173 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1174 1175 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1176 1177 /* 1178 * We need to take into account a situation in which a TXQ was 1179 * allocated to TID x, and then turned shared by adding TIDs y 1180 * and z. If TID x becomes inactive and is removed from the TXQ, 1181 * ownership must be given to one of the remaining TIDs. 1182 * This is mainly because if TID x continues - a new queue can't 1183 * be allocated for it as long as it is an owner of another TXQ. 1184 * 1185 * Mark this queue in the right bitmap, we'll send the command 1186 * to the firmware later. 1187 */ 1188 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1189 set_bit(queue, changetid_queues); 1190 1191 IWL_DEBUG_TX_QUEUES(mvm, 1192 "Removing inactive TID %d from shared Q:%d\n", 1193 tid, queue); 1194 } 1195 1196 IWL_DEBUG_TX_QUEUES(mvm, 1197 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1198 mvm->queue_info[queue].tid_bitmap); 1199 1200 /* 1201 * There may be different TIDs with the same mac queues, so make 1202 * sure all TIDs have existing corresponding mac queues enabled 1203 */ 1204 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1205 1206 /* If the queue is marked as shared - "unshare" it */ 1207 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1208 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1209 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1210 queue); 1211 set_bit(queue, unshare_queues); 1212 } 1213 1214 return false; 1215 } 1216 1217 /* 1218 * Check for inactivity - this includes checking if any queue 1219 * can be unshared and finding one (and only one) that can be 1220 * reused. 1221 * This function is also invoked as a sort of clean-up task, 1222 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1223 * 1224 * Returns the queue number, or -ENOSPC. 1225 */ 1226 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1227 { 1228 unsigned long now = jiffies; 1229 unsigned long unshare_queues = 0; 1230 unsigned long changetid_queues = 0; 1231 int i, ret, free_queue = -ENOSPC; 1232 struct ieee80211_sta *queue_owner = NULL; 1233 1234 lockdep_assert_held(&mvm->mutex); 1235 1236 if (iwl_mvm_has_new_tx_api(mvm)) 1237 return -ENOSPC; 1238 1239 rcu_read_lock(); 1240 1241 /* we skip the CMD queue below by starting at 1 */ 1242 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1243 1244 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1245 struct ieee80211_sta *sta; 1246 struct iwl_mvm_sta *mvmsta; 1247 u8 sta_id; 1248 int tid; 1249 unsigned long inactive_tid_bitmap = 0; 1250 unsigned long queue_tid_bitmap; 1251 1252 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1253 if (!queue_tid_bitmap) 1254 continue; 1255 1256 /* If TXQ isn't in active use anyway - nothing to do here... */ 1257 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1258 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1259 continue; 1260 1261 /* Check to see if there are inactive TIDs on this queue */ 1262 for_each_set_bit(tid, &queue_tid_bitmap, 1263 IWL_MAX_TID_COUNT + 1) { 1264 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1265 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1266 continue; 1267 1268 inactive_tid_bitmap |= BIT(tid); 1269 } 1270 1271 /* If all TIDs are active - finish check on this queue */ 1272 if (!inactive_tid_bitmap) 1273 continue; 1274 1275 /* 1276 * If we are here - the queue hadn't been served recently and is 1277 * in use 1278 */ 1279 1280 sta_id = mvm->queue_info[i].ra_sta_id; 1281 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1282 1283 /* 1284 * If the STA doesn't exist anymore, it isn't an error. It could 1285 * be that it was removed since getting the queues, and in this 1286 * case it should've inactivated its queues anyway. 1287 */ 1288 if (IS_ERR_OR_NULL(sta)) 1289 continue; 1290 1291 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1292 1293 spin_lock_bh(&mvmsta->lock); 1294 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1295 inactive_tid_bitmap, 1296 &unshare_queues, 1297 &changetid_queues); 1298 if (ret && free_queue < 0) { 1299 queue_owner = sta; 1300 free_queue = i; 1301 } 1302 /* only unlock sta lock - we still need the queue info lock */ 1303 spin_unlock_bh(&mvmsta->lock); 1304 } 1305 1306 1307 /* Reconfigure queues requiring reconfiguation */ 1308 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1309 iwl_mvm_unshare_queue(mvm, i); 1310 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1311 iwl_mvm_change_queue_tid(mvm, i); 1312 1313 rcu_read_unlock(); 1314 1315 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1316 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1317 alloc_for_sta); 1318 if (ret) 1319 return ret; 1320 } 1321 1322 return free_queue; 1323 } 1324 1325 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1326 struct ieee80211_sta *sta, u8 ac, int tid) 1327 { 1328 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1329 struct iwl_trans_txq_scd_cfg cfg = { 1330 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1331 .sta_id = mvmsta->deflink.sta_id, 1332 .tid = tid, 1333 .frame_limit = IWL_FRAME_LIMIT, 1334 }; 1335 unsigned int wdg_timeout = 1336 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1337 int queue = -1; 1338 u16 queue_tmp; 1339 unsigned long disable_agg_tids = 0; 1340 enum iwl_mvm_agg_state queue_state; 1341 bool shared_queue = false, inc_ssn; 1342 int ssn; 1343 unsigned long tfd_queue_mask; 1344 int ret; 1345 1346 lockdep_assert_held(&mvm->mutex); 1347 1348 if (iwl_mvm_has_new_tx_api(mvm)) 1349 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1350 1351 spin_lock_bh(&mvmsta->lock); 1352 tfd_queue_mask = mvmsta->tfd_queue_msk; 1353 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1354 spin_unlock_bh(&mvmsta->lock); 1355 1356 if (tid == IWL_MAX_TID_COUNT) { 1357 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1358 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1359 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1360 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1361 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1362 queue); 1363 1364 /* If no such queue is found, we'll use a DATA queue instead */ 1365 } 1366 1367 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1368 (mvm->queue_info[mvmsta->reserved_queue].status == 1369 IWL_MVM_QUEUE_RESERVED)) { 1370 queue = mvmsta->reserved_queue; 1371 mvm->queue_info[queue].reserved = true; 1372 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1373 } 1374 1375 if (queue < 0) 1376 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1377 IWL_MVM_DQA_MIN_DATA_QUEUE, 1378 IWL_MVM_DQA_MAX_DATA_QUEUE); 1379 if (queue < 0) { 1380 /* try harder - perhaps kill an inactive queue */ 1381 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1382 } 1383 1384 /* No free queue - we'll have to share */ 1385 if (queue <= 0) { 1386 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1387 if (queue > 0) { 1388 shared_queue = true; 1389 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1390 } 1391 } 1392 1393 /* 1394 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1395 * to make sure no one else takes it. 1396 * This will allow avoiding re-acquiring the lock at the end of the 1397 * configuration. On error we'll mark it back as free. 1398 */ 1399 if (queue > 0 && !shared_queue) 1400 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1401 1402 /* This shouldn't happen - out of queues */ 1403 if (WARN_ON(queue <= 0)) { 1404 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1405 tid, cfg.sta_id); 1406 return queue; 1407 } 1408 1409 /* 1410 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1411 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1412 * as aggregatable. 1413 * Mark all DATA queues as allowing to be aggregated at some point 1414 */ 1415 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1416 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1417 1418 IWL_DEBUG_TX_QUEUES(mvm, 1419 "Allocating %squeue #%d to sta %d on tid %d\n", 1420 shared_queue ? "shared " : "", queue, 1421 mvmsta->deflink.sta_id, tid); 1422 1423 if (shared_queue) { 1424 /* Disable any open aggs on this queue */ 1425 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1426 1427 if (disable_agg_tids) { 1428 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1429 queue); 1430 iwl_mvm_invalidate_sta_queue(mvm, queue, 1431 disable_agg_tids, false); 1432 } 1433 } 1434 1435 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1436 1437 /* 1438 * Mark queue as shared in transport if shared 1439 * Note this has to be done after queue enablement because enablement 1440 * can also set this value, and there is no indication there to shared 1441 * queues 1442 */ 1443 if (shared_queue) 1444 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1445 1446 spin_lock_bh(&mvmsta->lock); 1447 /* 1448 * This looks racy, but it is not. We have only one packet for 1449 * this ra/tid in our Tx path since we stop the Qdisc when we 1450 * need to allocate a new TFD queue. 1451 */ 1452 if (inc_ssn) { 1453 mvmsta->tid_data[tid].seq_number += 0x10; 1454 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1455 } 1456 mvmsta->tid_data[tid].txq_id = queue; 1457 mvmsta->tfd_queue_msk |= BIT(queue); 1458 queue_state = mvmsta->tid_data[tid].state; 1459 1460 if (mvmsta->reserved_queue == queue) 1461 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1462 spin_unlock_bh(&mvmsta->lock); 1463 1464 if (!shared_queue) { 1465 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1466 if (ret) 1467 goto out_err; 1468 1469 /* If we need to re-enable aggregations... */ 1470 if (queue_state == IWL_AGG_ON) { 1471 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1472 if (ret) 1473 goto out_err; 1474 } 1475 } else { 1476 /* Redirect queue, if needed */ 1477 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1478 wdg_timeout, false, 1479 iwl_mvm_txq_from_tid(sta, tid)); 1480 if (ret) 1481 goto out_err; 1482 } 1483 1484 return 0; 1485 1486 out_err: 1487 queue_tmp = queue; 1488 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1489 1490 return ret; 1491 } 1492 1493 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm, 1494 struct ieee80211_txq *txq) 1495 { 1496 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1497 int ret = -EINVAL; 1498 1499 lockdep_assert_held(&mvm->mutex); 1500 1501 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) || 1502 !txq->sta) { 1503 return 0; 1504 } 1505 1506 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) { 1507 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1508 ret = 0; 1509 } 1510 1511 local_bh_disable(); 1512 spin_lock(&mvm->add_stream_lock); 1513 if (!list_empty(&mvmtxq->list)) 1514 list_del_init(&mvmtxq->list); 1515 spin_unlock(&mvm->add_stream_lock); 1516 local_bh_enable(); 1517 1518 return ret; 1519 } 1520 1521 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1522 { 1523 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1524 add_stream_wk); 1525 1526 mutex_lock(&mvm->mutex); 1527 1528 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1529 1530 while (!list_empty(&mvm->add_stream_txqs)) { 1531 struct iwl_mvm_txq *mvmtxq; 1532 struct ieee80211_txq *txq; 1533 u8 tid; 1534 1535 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1536 struct iwl_mvm_txq, list); 1537 1538 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1539 drv_priv); 1540 tid = txq->tid; 1541 if (tid == IEEE80211_NUM_TIDS) 1542 tid = IWL_MAX_TID_COUNT; 1543 1544 /* 1545 * We can't really do much here, but if this fails we can't 1546 * transmit anyway - so just don't transmit the frame etc. 1547 * and let them back up ... we've tried our best to allocate 1548 * a queue in the function itself. 1549 */ 1550 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1551 spin_lock_bh(&mvm->add_stream_lock); 1552 list_del_init(&mvmtxq->list); 1553 spin_unlock_bh(&mvm->add_stream_lock); 1554 continue; 1555 } 1556 1557 /* now we're ready, any remaining races/concurrency will be 1558 * handled in iwl_mvm_mac_itxq_xmit() 1559 */ 1560 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1561 1562 local_bh_disable(); 1563 spin_lock(&mvm->add_stream_lock); 1564 list_del_init(&mvmtxq->list); 1565 spin_unlock(&mvm->add_stream_lock); 1566 1567 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1568 local_bh_enable(); 1569 } 1570 1571 mutex_unlock(&mvm->mutex); 1572 } 1573 1574 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1575 struct ieee80211_sta *sta, 1576 enum nl80211_iftype vif_type) 1577 { 1578 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1579 int queue; 1580 1581 /* queue reserving is disabled on new TX path */ 1582 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1583 return 0; 1584 1585 /* run the general cleanup/unsharing of queues */ 1586 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1587 1588 /* Make sure we have free resources for this STA */ 1589 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1590 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1591 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1592 IWL_MVM_QUEUE_FREE)) 1593 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1594 else 1595 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1596 IWL_MVM_DQA_MIN_DATA_QUEUE, 1597 IWL_MVM_DQA_MAX_DATA_QUEUE); 1598 if (queue < 0) { 1599 /* try again - this time kick out a queue if needed */ 1600 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1601 if (queue < 0) { 1602 IWL_ERR(mvm, "No available queues for new station\n"); 1603 return -ENOSPC; 1604 } 1605 } 1606 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1607 1608 mvmsta->reserved_queue = queue; 1609 1610 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1611 queue, mvmsta->deflink.sta_id); 1612 1613 return 0; 1614 } 1615 1616 /* 1617 * In DQA mode, after a HW restart the queues should be allocated as before, in 1618 * order to avoid race conditions when there are shared queues. This function 1619 * does the re-mapping and queue allocation. 1620 * 1621 * Note that re-enabling aggregations isn't done in this function. 1622 */ 1623 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1624 struct ieee80211_sta *sta) 1625 { 1626 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1627 unsigned int wdg = 1628 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1629 int i; 1630 struct iwl_trans_txq_scd_cfg cfg = { 1631 .sta_id = mvm_sta->deflink.sta_id, 1632 .frame_limit = IWL_FRAME_LIMIT, 1633 }; 1634 1635 /* Make sure reserved queue is still marked as such (if allocated) */ 1636 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1637 mvm->queue_info[mvm_sta->reserved_queue].status = 1638 IWL_MVM_QUEUE_RESERVED; 1639 1640 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1641 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1642 int txq_id = tid_data->txq_id; 1643 int ac; 1644 1645 if (txq_id == IWL_MVM_INVALID_QUEUE) 1646 continue; 1647 1648 ac = tid_to_mac80211_ac[i]; 1649 1650 if (iwl_mvm_has_new_tx_api(mvm)) { 1651 IWL_DEBUG_TX_QUEUES(mvm, 1652 "Re-mapping sta %d tid %d\n", 1653 mvm_sta->deflink.sta_id, i); 1654 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1655 mvm_sta->deflink.sta_id, 1656 i, wdg); 1657 /* 1658 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1659 * to try again later, we have no other good way of 1660 * failing here 1661 */ 1662 if (txq_id < 0) 1663 txq_id = IWL_MVM_INVALID_QUEUE; 1664 tid_data->txq_id = txq_id; 1665 1666 /* 1667 * Since we don't set the seq number after reset, and HW 1668 * sets it now, FW reset will cause the seq num to start 1669 * at 0 again, so driver will need to update it 1670 * internally as well, so it keeps in sync with real val 1671 */ 1672 tid_data->seq_number = 0; 1673 } else { 1674 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1675 1676 cfg.tid = i; 1677 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1678 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1679 txq_id == 1680 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1681 1682 IWL_DEBUG_TX_QUEUES(mvm, 1683 "Re-mapping sta %d tid %d to queue %d\n", 1684 mvm_sta->deflink.sta_id, i, 1685 txq_id); 1686 1687 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1688 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1689 } 1690 } 1691 } 1692 1693 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1694 struct iwl_mvm_int_sta *sta, 1695 const u8 *addr, 1696 u16 mac_id, u16 color) 1697 { 1698 struct iwl_mvm_add_sta_cmd cmd; 1699 int ret; 1700 u32 status = ADD_STA_SUCCESS; 1701 1702 lockdep_assert_held(&mvm->mutex); 1703 1704 memset(&cmd, 0, sizeof(cmd)); 1705 cmd.sta_id = sta->sta_id; 1706 1707 if (iwl_mvm_has_new_station_api(mvm->fw) && 1708 sta->type == IWL_STA_AUX_ACTIVITY) 1709 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1710 else 1711 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1712 color)); 1713 1714 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1715 cmd.station_type = sta->type; 1716 1717 if (!iwl_mvm_has_new_tx_api(mvm)) 1718 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1719 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1720 1721 if (addr) 1722 memcpy(cmd.addr, addr, ETH_ALEN); 1723 1724 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1725 iwl_mvm_add_sta_cmd_size(mvm), 1726 &cmd, &status); 1727 if (ret) 1728 return ret; 1729 1730 switch (status & IWL_ADD_STA_STATUS_MASK) { 1731 case ADD_STA_SUCCESS: 1732 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1733 return 0; 1734 default: 1735 ret = -EIO; 1736 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1737 status); 1738 break; 1739 } 1740 return ret; 1741 } 1742 1743 /* Initialize driver data of a new sta */ 1744 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1745 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1746 { 1747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1748 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1749 struct iwl_mvm_rxq_dup_data *dup_data; 1750 int i, ret = 0; 1751 1752 lockdep_assert_held(&mvm->mutex); 1753 1754 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1755 mvmvif->color); 1756 mvm_sta->vif = vif; 1757 1758 /* for MLD sta_id(s) should be allocated for each link before calling 1759 * this function 1760 */ 1761 if (!mvm->mld_api_is_used) { 1762 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1763 return -EINVAL; 1764 1765 mvm_sta->deflink.sta_id = sta_id; 1766 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1767 1768 if (!mvm->trans->trans_cfg->gen2) 1769 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1770 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1771 else 1772 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1773 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1774 } 1775 1776 mvm_sta->tt_tx_protection = false; 1777 mvm_sta->sta_type = sta_type; 1778 1779 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1780 1781 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1782 /* 1783 * Mark all queues for this STA as unallocated and defer TX 1784 * frames until the queue is allocated 1785 */ 1786 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1787 } 1788 1789 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1790 struct iwl_mvm_txq *mvmtxq = 1791 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1792 1793 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1794 INIT_LIST_HEAD(&mvmtxq->list); 1795 atomic_set(&mvmtxq->tx_request, 0); 1796 } 1797 1798 if (iwl_mvm_has_new_rx_api(mvm)) { 1799 int q; 1800 1801 dup_data = kcalloc(mvm->trans->num_rx_queues, 1802 sizeof(*dup_data), GFP_KERNEL); 1803 if (!dup_data) 1804 return -ENOMEM; 1805 /* 1806 * Initialize all the last_seq values to 0xffff which can never 1807 * compare equal to the frame's seq_ctrl in the check in 1808 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1809 * number and fragmented packets don't reach that function. 1810 * 1811 * This thus allows receiving a packet with seqno 0 and the 1812 * retry bit set as the very first packet on a new TID. 1813 */ 1814 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1815 memset(dup_data[q].last_seq, 0xff, 1816 sizeof(dup_data[q].last_seq)); 1817 mvm_sta->dup_data = dup_data; 1818 } 1819 1820 if (!iwl_mvm_has_new_tx_api(mvm)) { 1821 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1822 ieee80211_vif_type_p2p(vif)); 1823 if (ret) 1824 return ret; 1825 } 1826 1827 /* 1828 * if rs is registered with mac80211, then "add station" will be handled 1829 * via the corresponding ops, otherwise need to notify rate scaling here 1830 */ 1831 if (iwl_mvm_has_tlc_offload(mvm)) 1832 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1833 else 1834 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1835 1836 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1837 1838 /* MPDUs are counted only when EMLSR is possible */ 1839 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && 1840 !sta->tdls && ieee80211_vif_is_mld(vif)) { 1841 mvm_sta->mpdu_counters = 1842 kcalloc(mvm->trans->num_rx_queues, 1843 sizeof(*mvm_sta->mpdu_counters), 1844 GFP_KERNEL); 1845 if (mvm_sta->mpdu_counters) 1846 for (int q = 0; q < mvm->trans->num_rx_queues; q++) 1847 spin_lock_init(&mvm_sta->mpdu_counters[q].lock); 1848 } 1849 1850 return 0; 1851 } 1852 1853 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1854 struct ieee80211_vif *vif, 1855 struct ieee80211_sta *sta) 1856 { 1857 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1858 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1859 int ret, sta_id; 1860 bool sta_update = false; 1861 unsigned int sta_flags = 0; 1862 1863 lockdep_assert_held(&mvm->mutex); 1864 1865 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1866 sta_id = iwl_mvm_find_free_sta_id(mvm, 1867 ieee80211_vif_type_p2p(vif)); 1868 else 1869 sta_id = mvm_sta->deflink.sta_id; 1870 1871 if (sta_id == IWL_MVM_INVALID_STA) 1872 return -ENOSPC; 1873 1874 spin_lock_init(&mvm_sta->lock); 1875 1876 /* if this is a HW restart re-alloc existing queues */ 1877 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1878 struct iwl_mvm_int_sta tmp_sta = { 1879 .sta_id = sta_id, 1880 .type = mvm_sta->sta_type, 1881 }; 1882 1883 /* First add an empty station since allocating 1884 * a queue requires a valid station 1885 */ 1886 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1887 mvmvif->id, mvmvif->color); 1888 if (ret) 1889 goto err; 1890 1891 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1892 sta_update = true; 1893 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1894 goto update_fw; 1895 } 1896 1897 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1898 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1899 if (ret) 1900 goto err; 1901 1902 update_fw: 1903 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1904 if (ret) 1905 goto err; 1906 1907 if (vif->type == NL80211_IFTYPE_STATION) { 1908 if (!sta->tdls) { 1909 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1910 mvmvif->deflink.ap_sta_id = sta_id; 1911 } else { 1912 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1913 } 1914 } 1915 1916 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1917 1918 return 0; 1919 1920 err: 1921 return ret; 1922 } 1923 1924 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1925 bool drain) 1926 { 1927 struct iwl_mvm_add_sta_cmd cmd = {}; 1928 int ret; 1929 u32 status; 1930 1931 lockdep_assert_held(&mvm->mutex); 1932 1933 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1934 cmd.sta_id = mvmsta->deflink.sta_id; 1935 cmd.add_modify = STA_MODE_MODIFY; 1936 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1937 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1938 1939 status = ADD_STA_SUCCESS; 1940 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1941 iwl_mvm_add_sta_cmd_size(mvm), 1942 &cmd, &status); 1943 if (ret) 1944 return ret; 1945 1946 switch (status & IWL_ADD_STA_STATUS_MASK) { 1947 case ADD_STA_SUCCESS: 1948 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1949 mvmsta->deflink.sta_id); 1950 break; 1951 default: 1952 ret = -EIO; 1953 #if defined(__linux__) 1954 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1955 mvmsta->deflink.sta_id); 1956 #elif defined(__FreeBSD__) 1957 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n", 1958 mvmsta->deflink.sta_id, status); 1959 #endif 1960 break; 1961 } 1962 1963 return ret; 1964 } 1965 1966 /* 1967 * Remove a station from the FW table. Before sending the command to remove 1968 * the station validate that the station is indeed known to the driver (sanity 1969 * only). 1970 */ 1971 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1972 { 1973 struct ieee80211_sta *sta; 1974 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1975 .sta_id = sta_id, 1976 }; 1977 int ret; 1978 1979 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1980 lockdep_is_held(&mvm->mutex)); 1981 1982 /* Note: internal stations are marked as error values */ 1983 if (!sta) { 1984 IWL_ERR(mvm, "Invalid station id\n"); 1985 return -EINVAL; 1986 } 1987 1988 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1989 sizeof(rm_sta_cmd), &rm_sta_cmd); 1990 if (ret) { 1991 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1992 return ret; 1993 } 1994 1995 return 0; 1996 } 1997 1998 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1999 struct ieee80211_vif *vif, 2000 struct ieee80211_sta *sta) 2001 { 2002 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2003 int i; 2004 2005 lockdep_assert_held(&mvm->mutex); 2006 2007 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2008 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 2009 continue; 2010 2011 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 2012 &mvm_sta->tid_data[i].txq_id, i); 2013 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 2014 } 2015 2016 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 2017 struct iwl_mvm_txq *mvmtxq = 2018 iwl_mvm_txq_from_mac80211(sta->txq[i]); 2019 2020 spin_lock_bh(&mvm->add_stream_lock); 2021 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 2022 list_del_init(&mvmtxq->list); 2023 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 2024 spin_unlock_bh(&mvm->add_stream_lock); 2025 } 2026 } 2027 2028 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 2029 struct iwl_mvm_sta *mvm_sta) 2030 { 2031 int i; 2032 2033 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2034 u16 txq_id; 2035 int ret; 2036 2037 spin_lock_bh(&mvm_sta->lock); 2038 txq_id = mvm_sta->tid_data[i].txq_id; 2039 spin_unlock_bh(&mvm_sta->lock); 2040 2041 if (txq_id == IWL_MVM_INVALID_QUEUE) 2042 continue; 2043 2044 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2045 if (ret) 2046 return ret; 2047 } 2048 2049 return 0; 2050 } 2051 2052 /* Execute the common part for both MLD and non-MLD modes. 2053 * Returns if we're done with removing the station, either 2054 * with error or success 2055 */ 2056 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2057 struct ieee80211_sta *sta, 2058 struct ieee80211_link_sta *link_sta, int *ret) 2059 { 2060 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2061 struct iwl_mvm_vif_link_info *mvm_link = 2062 mvmvif->link[link_sta->link_id]; 2063 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2064 struct iwl_mvm_link_sta *mvm_link_sta; 2065 u8 sta_id; 2066 2067 lockdep_assert_held(&mvm->mutex); 2068 2069 mvm_link_sta = 2070 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2071 lockdep_is_held(&mvm->mutex)); 2072 sta_id = mvm_link_sta->sta_id; 2073 2074 /* If there is a TXQ still marked as reserved - free it */ 2075 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2076 u8 reserved_txq = mvm_sta->reserved_queue; 2077 enum iwl_mvm_queue_status *status; 2078 2079 /* 2080 * If no traffic has gone through the reserved TXQ - it 2081 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2082 * should be manually marked as free again 2083 */ 2084 status = &mvm->queue_info[reserved_txq].status; 2085 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2086 (*status != IWL_MVM_QUEUE_FREE), 2087 "sta_id %d reserved txq %d status %d", 2088 sta_id, reserved_txq, *status)) { 2089 *ret = -EINVAL; 2090 return true; 2091 } 2092 2093 *status = IWL_MVM_QUEUE_FREE; 2094 } 2095 2096 if (vif->type == NL80211_IFTYPE_STATION && 2097 mvm_link->ap_sta_id == sta_id) { 2098 /* if associated - we can't remove the AP STA now */ 2099 if (vif->cfg.assoc) 2100 return true; 2101 2102 /* first remove remaining keys */ 2103 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2104 2105 /* unassoc - go ahead - remove the AP STA now */ 2106 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2107 } 2108 2109 /* 2110 * This shouldn't happen - the TDLS channel switch should be canceled 2111 * before the STA is removed. 2112 */ 2113 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2114 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2115 cancel_delayed_work(&mvm->tdls_cs.dwork); 2116 } 2117 2118 return false; 2119 } 2120 2121 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2122 struct ieee80211_vif *vif, 2123 struct ieee80211_sta *sta) 2124 { 2125 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2126 int ret; 2127 2128 lockdep_assert_held(&mvm->mutex); 2129 2130 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2131 if (ret) 2132 return ret; 2133 2134 /* flush its queues here since we are freeing mvm_sta */ 2135 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id, 2136 mvm_sta->tfd_queue_msk); 2137 if (ret) 2138 return ret; 2139 if (iwl_mvm_has_new_tx_api(mvm)) { 2140 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2141 } else { 2142 u32 q_mask = mvm_sta->tfd_queue_msk; 2143 2144 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2145 q_mask); 2146 } 2147 if (ret) 2148 return ret; 2149 2150 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2151 2152 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2153 2154 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2155 return ret; 2156 2157 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2158 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2159 2160 return ret; 2161 } 2162 2163 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2164 struct ieee80211_vif *vif, 2165 u8 sta_id) 2166 { 2167 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2168 2169 lockdep_assert_held(&mvm->mutex); 2170 2171 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2172 return ret; 2173 } 2174 2175 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2176 struct iwl_mvm_int_sta *sta, 2177 u32 qmask, enum nl80211_iftype iftype, 2178 u8 type) 2179 { 2180 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2181 sta->sta_id == IWL_MVM_INVALID_STA) { 2182 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2183 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2184 return -ENOSPC; 2185 } 2186 2187 sta->tfd_queue_msk = qmask; 2188 sta->type = type; 2189 2190 /* put a non-NULL value so iterating over the stations won't stop */ 2191 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2192 return 0; 2193 } 2194 2195 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2196 { 2197 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2198 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2199 sta->sta_id = IWL_MVM_INVALID_STA; 2200 } 2201 2202 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2203 u8 sta_id, u8 fifo) 2204 { 2205 unsigned int wdg_timeout = 2206 mvm->trans->trans_cfg->base_params->wd_timeout; 2207 struct iwl_trans_txq_scd_cfg cfg = { 2208 .fifo = fifo, 2209 .sta_id = sta_id, 2210 .tid = IWL_MAX_TID_COUNT, 2211 .aggregate = false, 2212 .frame_limit = IWL_FRAME_LIMIT, 2213 }; 2214 2215 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2216 2217 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2218 } 2219 2220 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2221 { 2222 unsigned int wdg_timeout = 2223 mvm->trans->trans_cfg->base_params->wd_timeout; 2224 2225 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2226 2227 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2228 wdg_timeout); 2229 } 2230 2231 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2232 int maccolor, u8 *addr, 2233 struct iwl_mvm_int_sta *sta, 2234 u16 *queue, int fifo) 2235 { 2236 int ret; 2237 2238 /* Map queue to fifo - needs to happen before adding station */ 2239 if (!iwl_mvm_has_new_tx_api(mvm)) 2240 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2241 2242 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2243 if (ret) { 2244 if (!iwl_mvm_has_new_tx_api(mvm)) 2245 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2246 IWL_MAX_TID_COUNT); 2247 return ret; 2248 } 2249 2250 /* 2251 * For 22000 firmware and on we cannot add queue to a station unknown 2252 * to firmware so enable queue here - after the station was added 2253 */ 2254 if (iwl_mvm_has_new_tx_api(mvm)) { 2255 int txq; 2256 2257 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2258 if (txq < 0) { 2259 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2260 return txq; 2261 } 2262 2263 *queue = txq; 2264 } 2265 2266 return 0; 2267 } 2268 2269 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2270 { 2271 int ret; 2272 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2273 BIT(mvm->aux_queue); 2274 2275 lockdep_assert_held(&mvm->mutex); 2276 2277 /* Allocate aux station and assign to it the aux queue */ 2278 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2279 NL80211_IFTYPE_UNSPECIFIED, 2280 IWL_STA_AUX_ACTIVITY); 2281 if (ret) 2282 return ret; 2283 2284 /* 2285 * In CDB NICs we need to specify which lmac to use for aux activity 2286 * using the mac_id argument place to send lmac_id to the function 2287 */ 2288 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2289 &mvm->aux_sta, &mvm->aux_queue, 2290 IWL_MVM_TX_FIFO_MCAST); 2291 if (ret) { 2292 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2293 return ret; 2294 } 2295 2296 return 0; 2297 } 2298 2299 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2300 { 2301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2302 2303 lockdep_assert_held(&mvm->mutex); 2304 2305 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2306 NULL, &mvm->snif_sta, 2307 &mvm->snif_queue, 2308 IWL_MVM_TX_FIFO_BE); 2309 } 2310 2311 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2312 { 2313 int ret; 2314 2315 lockdep_assert_held(&mvm->mutex); 2316 2317 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2318 return -EINVAL; 2319 2320 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2321 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2322 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2323 if (ret) 2324 IWL_WARN(mvm, "Failed sending remove station\n"); 2325 2326 return ret; 2327 } 2328 2329 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2330 { 2331 int ret; 2332 2333 lockdep_assert_held(&mvm->mutex); 2334 2335 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2336 return -EINVAL; 2337 2338 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2339 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2340 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2341 if (ret) 2342 IWL_WARN(mvm, "Failed sending remove station\n"); 2343 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2344 2345 return ret; 2346 } 2347 2348 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2349 { 2350 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2351 } 2352 2353 /* 2354 * Send the add station command for the vif's broadcast station. 2355 * Assumes that the station was already allocated. 2356 * 2357 * @mvm: the mvm component 2358 * @vif: the interface to which the broadcast station is added 2359 * @bsta: the broadcast station to add. 2360 */ 2361 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2362 { 2363 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2364 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2365 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2366 const u8 *baddr = _baddr; 2367 int queue; 2368 int ret; 2369 unsigned int wdg_timeout = 2370 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2371 struct iwl_trans_txq_scd_cfg cfg = { 2372 .fifo = IWL_MVM_TX_FIFO_VO, 2373 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2374 .tid = IWL_MAX_TID_COUNT, 2375 .aggregate = false, 2376 .frame_limit = IWL_FRAME_LIMIT, 2377 }; 2378 2379 lockdep_assert_held(&mvm->mutex); 2380 2381 if (!iwl_mvm_has_new_tx_api(mvm)) { 2382 if (vif->type == NL80211_IFTYPE_AP || 2383 vif->type == NL80211_IFTYPE_ADHOC) { 2384 queue = mvm->probe_queue; 2385 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2386 queue = mvm->p2p_dev_queue; 2387 } else { 2388 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2389 return -EINVAL; 2390 } 2391 2392 bsta->tfd_queue_msk |= BIT(queue); 2393 2394 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2395 } 2396 2397 if (vif->type == NL80211_IFTYPE_ADHOC) 2398 baddr = vif->bss_conf.bssid; 2399 2400 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2401 return -ENOSPC; 2402 2403 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2404 mvmvif->id, mvmvif->color); 2405 if (ret) 2406 return ret; 2407 2408 /* 2409 * For 22000 firmware and on we cannot add queue to a station unknown 2410 * to firmware so enable queue here - after the station was added 2411 */ 2412 if (iwl_mvm_has_new_tx_api(mvm)) { 2413 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2414 IWL_MAX_TID_COUNT, 2415 wdg_timeout); 2416 if (queue < 0) { 2417 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2418 return queue; 2419 } 2420 2421 if (vif->type == NL80211_IFTYPE_AP || 2422 vif->type == NL80211_IFTYPE_ADHOC) { 2423 /* for queue management */ 2424 mvm->probe_queue = queue; 2425 /* for use in TX */ 2426 mvmvif->deflink.mgmt_queue = queue; 2427 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2428 mvm->p2p_dev_queue = queue; 2429 } 2430 } else if (vif->type == NL80211_IFTYPE_AP || 2431 vif->type == NL80211_IFTYPE_ADHOC) { 2432 /* set it for use in TX */ 2433 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2434 } 2435 2436 return 0; 2437 } 2438 2439 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2440 struct ieee80211_vif *vif) 2441 { 2442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2443 u16 *queueptr, queue; 2444 2445 lockdep_assert_held(&mvm->mutex); 2446 2447 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, 2448 mvmvif->deflink.bcast_sta.tfd_queue_msk); 2449 2450 switch (vif->type) { 2451 case NL80211_IFTYPE_AP: 2452 case NL80211_IFTYPE_ADHOC: 2453 queueptr = &mvm->probe_queue; 2454 break; 2455 case NL80211_IFTYPE_P2P_DEVICE: 2456 queueptr = &mvm->p2p_dev_queue; 2457 break; 2458 default: 2459 WARN(1, "Can't free bcast queue on vif type %d\n", 2460 vif->type); 2461 return; 2462 } 2463 2464 queue = *queueptr; 2465 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2466 queueptr, IWL_MAX_TID_COUNT); 2467 2468 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2469 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2470 2471 if (iwl_mvm_has_new_tx_api(mvm)) 2472 return; 2473 2474 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2475 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2476 } 2477 2478 /* Send the FW a request to remove the station from it's internal data 2479 * structures, but DO NOT remove the entry from the local data structures. */ 2480 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2481 { 2482 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2483 int ret; 2484 2485 lockdep_assert_held(&mvm->mutex); 2486 2487 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2488 2489 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2490 if (ret) 2491 IWL_WARN(mvm, "Failed sending remove station\n"); 2492 return ret; 2493 } 2494 2495 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2496 { 2497 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2498 2499 lockdep_assert_held(&mvm->mutex); 2500 2501 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2502 ieee80211_vif_type_p2p(vif), 2503 IWL_STA_GENERAL_PURPOSE); 2504 } 2505 2506 /* Allocate a new station entry for the broadcast station to the given vif, 2507 * and send it to the FW. 2508 * Note that each P2P mac should have its own broadcast station. 2509 * 2510 * @mvm: the mvm component 2511 * @vif: the interface to which the broadcast station is added 2512 * @bsta: the broadcast station to add. */ 2513 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2514 { 2515 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2516 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2517 int ret; 2518 2519 lockdep_assert_held(&mvm->mutex); 2520 2521 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2522 if (ret) 2523 return ret; 2524 2525 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2526 2527 if (ret) 2528 iwl_mvm_dealloc_int_sta(mvm, bsta); 2529 2530 return ret; 2531 } 2532 2533 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2534 { 2535 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2536 2537 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2538 } 2539 2540 /* 2541 * Send the FW a request to remove the station from it's internal data 2542 * structures, and in addition remove it from the local data structure. 2543 */ 2544 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2545 { 2546 int ret; 2547 2548 lockdep_assert_held(&mvm->mutex); 2549 2550 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2551 2552 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2553 2554 return ret; 2555 } 2556 2557 /* 2558 * Allocate a new station entry for the multicast station to the given vif, 2559 * and send it to the FW. 2560 * Note that each AP/GO mac should have its own multicast station. 2561 * 2562 * @mvm: the mvm component 2563 * @vif: the interface to which the multicast station is added 2564 */ 2565 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2566 { 2567 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2568 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2569 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2570 const u8 *maddr = _maddr; 2571 struct iwl_trans_txq_scd_cfg cfg = { 2572 .fifo = vif->type == NL80211_IFTYPE_AP ? 2573 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2574 .sta_id = msta->sta_id, 2575 .tid = 0, 2576 .aggregate = false, 2577 .frame_limit = IWL_FRAME_LIMIT, 2578 }; 2579 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2580 int ret; 2581 2582 lockdep_assert_held(&mvm->mutex); 2583 2584 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2585 vif->type != NL80211_IFTYPE_ADHOC)) 2586 return -EOPNOTSUPP; 2587 2588 /* 2589 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2590 * invalid, so make sure we use the queue we want. 2591 * Note that this is done here as we want to avoid making DQA 2592 * changes in mac80211 layer. 2593 */ 2594 if (vif->type == NL80211_IFTYPE_ADHOC) 2595 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2596 2597 /* 2598 * While in previous FWs we had to exclude cab queue from TFD queue 2599 * mask, now it is needed as any other queue. 2600 */ 2601 if (!iwl_mvm_has_new_tx_api(mvm) && 2602 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2603 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2604 &cfg, 2605 timeout); 2606 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2607 } 2608 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2609 mvmvif->id, mvmvif->color); 2610 if (ret) 2611 goto err; 2612 2613 /* 2614 * Enable cab queue after the ADD_STA command is sent. 2615 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2616 * command with unknown station id, and for FW that doesn't support 2617 * station API since the cab queue is not included in the 2618 * tfd_queue_mask. 2619 */ 2620 if (iwl_mvm_has_new_tx_api(mvm)) { 2621 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2622 0, timeout); 2623 if (queue < 0) { 2624 ret = queue; 2625 goto err; 2626 } 2627 mvmvif->deflink.cab_queue = queue; 2628 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2629 IWL_UCODE_TLV_API_STA_TYPE)) 2630 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2631 &cfg, 2632 timeout); 2633 2634 return 0; 2635 err: 2636 iwl_mvm_dealloc_int_sta(mvm, msta); 2637 return ret; 2638 } 2639 2640 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2641 struct ieee80211_key_conf *keyconf, 2642 bool mcast) 2643 { 2644 union { 2645 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2646 struct iwl_mvm_add_sta_key_cmd cmd; 2647 } u = {}; 2648 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2649 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2650 __le16 key_flags; 2651 int ret, size; 2652 u32 status; 2653 2654 /* This is a valid situation for GTK removal */ 2655 if (sta_id == IWL_MVM_INVALID_STA) 2656 return 0; 2657 2658 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2659 STA_KEY_FLG_KEYID_MSK); 2660 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2661 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2662 2663 if (mcast) 2664 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2665 2666 /* 2667 * The fields assigned here are in the same location at the start 2668 * of the command, so we can do this union trick. 2669 */ 2670 u.cmd.common.key_flags = key_flags; 2671 u.cmd.common.key_offset = keyconf->hw_key_idx; 2672 u.cmd.common.sta_id = sta_id; 2673 2674 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2675 2676 status = ADD_STA_SUCCESS; 2677 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2678 &status); 2679 2680 switch (status) { 2681 case ADD_STA_SUCCESS: 2682 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2683 break; 2684 default: 2685 ret = -EIO; 2686 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2687 break; 2688 } 2689 2690 return ret; 2691 } 2692 2693 /* 2694 * Send the FW a request to remove the station from it's internal data 2695 * structures, and in addition remove it from the local data structure. 2696 */ 2697 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2698 { 2699 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2700 int ret; 2701 2702 lockdep_assert_held(&mvm->mutex); 2703 2704 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id, 2705 mvmvif->deflink.mcast_sta.tfd_queue_msk); 2706 2707 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2708 &mvmvif->deflink.cab_queue, 0); 2709 2710 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2711 if (ret) 2712 IWL_WARN(mvm, "Failed sending remove station\n"); 2713 2714 return ret; 2715 } 2716 2717 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2718 { 2719 struct iwl_mvm_delba_data notif = { 2720 .baid = baid, 2721 }; 2722 2723 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2724 ¬if, sizeof(notif)); 2725 }; 2726 2727 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2728 struct iwl_mvm_baid_data *data) 2729 { 2730 int i; 2731 2732 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2733 2734 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2735 int j; 2736 struct iwl_mvm_reorder_buffer *reorder_buf = 2737 &data->reorder_buf[i]; 2738 struct iwl_mvm_reorder_buf_entry *entries = 2739 &data->entries[i * data->entries_per_queue]; 2740 2741 spin_lock_bh(&reorder_buf->lock); 2742 if (likely(!reorder_buf->num_stored)) { 2743 spin_unlock_bh(&reorder_buf->lock); 2744 continue; 2745 } 2746 2747 /* 2748 * This shouldn't happen in regular DELBA since the internal 2749 * delBA notification should trigger a release of all frames in 2750 * the reorder buffer. 2751 */ 2752 WARN_ON(1); 2753 2754 for (j = 0; j < data->buf_size; j++) 2755 __skb_queue_purge(&entries[j].frames); 2756 2757 spin_unlock_bh(&reorder_buf->lock); 2758 } 2759 } 2760 2761 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2762 struct iwl_mvm_baid_data *data, 2763 u16 ssn) 2764 { 2765 int i; 2766 2767 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2768 struct iwl_mvm_reorder_buffer *reorder_buf = 2769 &data->reorder_buf[i]; 2770 struct iwl_mvm_reorder_buf_entry *entries = 2771 &data->entries[i * data->entries_per_queue]; 2772 int j; 2773 2774 reorder_buf->num_stored = 0; 2775 reorder_buf->head_sn = ssn; 2776 spin_lock_init(&reorder_buf->lock); 2777 reorder_buf->queue = i; 2778 reorder_buf->valid = false; 2779 for (j = 0; j < data->buf_size; j++) 2780 __skb_queue_head_init(&entries[j].frames); 2781 } 2782 } 2783 2784 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2785 struct ieee80211_sta *sta, 2786 bool start, int tid, u16 ssn, 2787 u16 buf_size) 2788 { 2789 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2790 struct iwl_mvm_add_sta_cmd cmd = { 2791 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2792 .sta_id = mvm_sta->deflink.sta_id, 2793 .add_modify = STA_MODE_MODIFY, 2794 }; 2795 u32 status; 2796 int ret; 2797 2798 if (start) { 2799 cmd.add_immediate_ba_tid = tid; 2800 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2801 cmd.rx_ba_window = cpu_to_le16(buf_size); 2802 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2803 } else { 2804 cmd.remove_immediate_ba_tid = tid; 2805 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2806 } 2807 2808 status = ADD_STA_SUCCESS; 2809 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2810 iwl_mvm_add_sta_cmd_size(mvm), 2811 &cmd, &status); 2812 if (ret) 2813 return ret; 2814 2815 switch (status & IWL_ADD_STA_STATUS_MASK) { 2816 case ADD_STA_SUCCESS: 2817 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2818 start ? "start" : "stopp"); 2819 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2820 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2821 return -EINVAL; 2822 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2823 case ADD_STA_IMMEDIATE_BA_FAILURE: 2824 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2825 return -ENOSPC; 2826 default: 2827 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2828 start ? "start" : "stopp", status); 2829 return -EIO; 2830 } 2831 } 2832 2833 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2834 struct ieee80211_sta *sta, 2835 bool start, int tid, u16 ssn, 2836 u16 buf_size, int baid) 2837 { 2838 struct iwl_rx_baid_cfg_cmd cmd = { 2839 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2840 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2841 }; 2842 struct iwl_host_cmd hcmd = { 2843 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD), 2844 .flags = CMD_SEND_IN_RFKILL, 2845 .len[0] = sizeof(cmd), 2846 .data[0] = &cmd, 2847 }; 2848 int ret; 2849 2850 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2851 2852 if (start) { 2853 cmd.alloc.sta_id_mask = 2854 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2855 cmd.alloc.tid = tid; 2856 cmd.alloc.ssn = cpu_to_le16(ssn); 2857 cmd.alloc.win_size = cpu_to_le16(buf_size); 2858 baid = -EIO; 2859 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) { 2860 cmd.remove_v1.baid = cpu_to_le32(baid); 2861 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2862 } else { 2863 cmd.remove.sta_id_mask = 2864 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2865 cmd.remove.tid = cpu_to_le32(tid); 2866 } 2867 2868 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid); 2869 if (ret) 2870 return ret; 2871 2872 if (!start) { 2873 /* ignore firmware baid on remove */ 2874 baid = 0; 2875 } 2876 2877 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2878 start ? "start" : "stopp"); 2879 2880 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2881 return -EINVAL; 2882 2883 return baid; 2884 } 2885 2886 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2887 bool start, int tid, u16 ssn, u16 buf_size, 2888 int baid) 2889 { 2890 if (fw_has_capa(&mvm->fw->ucode_capa, 2891 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2892 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2893 tid, ssn, buf_size, baid); 2894 2895 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2896 tid, ssn, buf_size); 2897 } 2898 2899 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2900 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2901 { 2902 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2903 struct iwl_mvm_baid_data *baid_data = NULL; 2904 int ret, baid; 2905 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2906 IWL_MAX_BAID_OLD; 2907 2908 lockdep_assert_held(&mvm->mutex); 2909 2910 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2911 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2912 return -ENOSPC; 2913 } 2914 2915 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2916 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2917 2918 /* sparse doesn't like the __align() so don't check */ 2919 #ifndef __CHECKER__ 2920 /* 2921 * The division below will be OK if either the cache line size 2922 * can be divided by the entry size (ALIGN will round up) or if 2923 * if the entry size can be divided by the cache line size, in 2924 * which case the ALIGN() will do nothing. 2925 */ 2926 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2927 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2928 #endif 2929 2930 /* 2931 * Upward align the reorder buffer size to fill an entire cache 2932 * line for each queue, to avoid sharing cache lines between 2933 * different queues. 2934 */ 2935 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2936 2937 /* 2938 * Allocate here so if allocation fails we can bail out early 2939 * before starting the BA session in the firmware 2940 */ 2941 baid_data = kzalloc(sizeof(*baid_data) + 2942 mvm->trans->num_rx_queues * 2943 reorder_buf_size, 2944 GFP_KERNEL); 2945 if (!baid_data) 2946 return -ENOMEM; 2947 2948 /* 2949 * This division is why we need the above BUILD_BUG_ON(), 2950 * if that doesn't hold then this will not be right. 2951 */ 2952 baid_data->entries_per_queue = 2953 reorder_buf_size / sizeof(baid_data->entries[0]); 2954 } 2955 2956 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2957 baid = mvm_sta->tid_to_baid[tid]; 2958 } else { 2959 /* we don't really need it in this case */ 2960 baid = -1; 2961 } 2962 2963 /* Don't send command to remove (start=0) BAID during restart */ 2964 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2965 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2966 baid); 2967 2968 if (baid < 0) { 2969 ret = baid; 2970 goto out_free; 2971 } 2972 2973 if (start) { 2974 mvm->rx_ba_sessions++; 2975 2976 if (!iwl_mvm_has_new_rx_api(mvm)) 2977 return 0; 2978 2979 baid_data->baid = baid; 2980 baid_data->timeout = timeout; 2981 baid_data->last_rx = jiffies; 2982 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2983 timer_setup(&baid_data->session_timer, 2984 iwl_mvm_rx_agg_session_expired, 0); 2985 baid_data->mvm = mvm; 2986 baid_data->tid = tid; 2987 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2988 baid_data->buf_size = buf_size; 2989 2990 mvm_sta->tid_to_baid[tid] = baid; 2991 if (timeout) 2992 mod_timer(&baid_data->session_timer, 2993 TU_TO_EXP_TIME(timeout * 2)); 2994 2995 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn); 2996 /* 2997 * protect the BA data with RCU to cover a case where our 2998 * internal RX sync mechanism will timeout (not that it's 2999 * supposed to happen) and we will free the session data while 3000 * RX is being processed in parallel 3001 */ 3002 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 3003 mvm_sta->deflink.sta_id, tid, baid); 3004 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 3005 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 3006 } else { 3007 baid = mvm_sta->tid_to_baid[tid]; 3008 3009 if (mvm->rx_ba_sessions > 0) 3010 /* check that restart flow didn't zero the counter */ 3011 mvm->rx_ba_sessions--; 3012 if (!iwl_mvm_has_new_rx_api(mvm)) 3013 return 0; 3014 3015 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 3016 return -EINVAL; 3017 3018 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 3019 if (WARN_ON(!baid_data)) 3020 return -EINVAL; 3021 3022 /* synchronize all rx queues so we can safely delete */ 3023 iwl_mvm_free_reorder(mvm, baid_data); 3024 timer_shutdown_sync(&baid_data->session_timer); 3025 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 3026 kfree_rcu(baid_data, rcu_head); 3027 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 3028 } 3029 return 0; 3030 3031 out_free: 3032 kfree(baid_data); 3033 return ret; 3034 } 3035 3036 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3037 int tid, u8 queue, bool start) 3038 { 3039 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3040 struct iwl_mvm_add_sta_cmd cmd = {}; 3041 int ret; 3042 u32 status; 3043 3044 lockdep_assert_held(&mvm->mutex); 3045 3046 if (start) { 3047 mvm_sta->tfd_queue_msk |= BIT(queue); 3048 mvm_sta->tid_disable_agg &= ~BIT(tid); 3049 } else { 3050 /* In DQA-mode the queue isn't removed on agg termination */ 3051 mvm_sta->tid_disable_agg |= BIT(tid); 3052 } 3053 3054 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3055 cmd.sta_id = mvm_sta->deflink.sta_id; 3056 cmd.add_modify = STA_MODE_MODIFY; 3057 if (!iwl_mvm_has_new_tx_api(mvm)) 3058 cmd.modify_mask = STA_MODIFY_QUEUES; 3059 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3060 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3061 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3062 3063 status = ADD_STA_SUCCESS; 3064 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3065 iwl_mvm_add_sta_cmd_size(mvm), 3066 &cmd, &status); 3067 if (ret) 3068 return ret; 3069 3070 switch (status & IWL_ADD_STA_STATUS_MASK) { 3071 case ADD_STA_SUCCESS: 3072 break; 3073 default: 3074 ret = -EIO; 3075 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3076 start ? "start" : "stopp", status); 3077 break; 3078 } 3079 3080 return ret; 3081 } 3082 3083 const u8 tid_to_mac80211_ac[] = { 3084 IEEE80211_AC_BE, 3085 IEEE80211_AC_BK, 3086 IEEE80211_AC_BK, 3087 IEEE80211_AC_BE, 3088 IEEE80211_AC_VI, 3089 IEEE80211_AC_VI, 3090 IEEE80211_AC_VO, 3091 IEEE80211_AC_VO, 3092 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3093 }; 3094 3095 static const u8 tid_to_ucode_ac[] = { 3096 AC_BE, 3097 AC_BK, 3098 AC_BK, 3099 AC_BE, 3100 AC_VI, 3101 AC_VI, 3102 AC_VO, 3103 AC_VO, 3104 }; 3105 3106 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3107 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3108 { 3109 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3110 struct iwl_mvm_tid_data *tid_data; 3111 u16 normalized_ssn; 3112 u16 txq_id; 3113 int ret; 3114 3115 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3116 return -EINVAL; 3117 3118 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3119 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3120 IWL_ERR(mvm, 3121 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3122 mvmsta->tid_data[tid].state); 3123 return -ENXIO; 3124 } 3125 3126 lockdep_assert_held(&mvm->mutex); 3127 3128 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3129 iwl_mvm_has_new_tx_api(mvm)) { 3130 u8 ac = tid_to_mac80211_ac[tid]; 3131 3132 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3133 if (ret) 3134 return ret; 3135 } 3136 3137 spin_lock_bh(&mvmsta->lock); 3138 3139 /* 3140 * Note the possible cases: 3141 * 1. An enabled TXQ - TXQ needs to become agg'ed 3142 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3143 * it as reserved 3144 */ 3145 txq_id = mvmsta->tid_data[tid].txq_id; 3146 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3147 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3148 IWL_MVM_DQA_MIN_DATA_QUEUE, 3149 IWL_MVM_DQA_MAX_DATA_QUEUE); 3150 if (ret < 0) { 3151 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3152 goto out; 3153 } 3154 3155 txq_id = ret; 3156 3157 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3158 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3159 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3160 ret = -ENXIO; 3161 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3162 tid, IWL_MAX_HW_QUEUES - 1); 3163 goto out; 3164 3165 } else if (unlikely(mvm->queue_info[txq_id].status == 3166 IWL_MVM_QUEUE_SHARED)) { 3167 ret = -ENXIO; 3168 IWL_DEBUG_TX_QUEUES(mvm, 3169 "Can't start tid %d agg on shared queue!\n", 3170 tid); 3171 goto out; 3172 } 3173 3174 IWL_DEBUG_TX_QUEUES(mvm, 3175 "AGG for tid %d will be on queue #%d\n", 3176 tid, txq_id); 3177 3178 tid_data = &mvmsta->tid_data[tid]; 3179 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3180 tid_data->txq_id = txq_id; 3181 *ssn = tid_data->ssn; 3182 3183 IWL_DEBUG_TX_QUEUES(mvm, 3184 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3185 mvmsta->deflink.sta_id, tid, txq_id, 3186 tid_data->ssn, 3187 tid_data->next_reclaimed); 3188 3189 /* 3190 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3191 * to align the wrap around of ssn so we compare relevant values. 3192 */ 3193 normalized_ssn = tid_data->ssn; 3194 if (mvm->trans->trans_cfg->gen2) 3195 normalized_ssn &= 0xff; 3196 3197 if (normalized_ssn == tid_data->next_reclaimed) { 3198 tid_data->state = IWL_AGG_STARTING; 3199 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3200 } else { 3201 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3202 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3203 } 3204 3205 out: 3206 spin_unlock_bh(&mvmsta->lock); 3207 3208 return ret; 3209 } 3210 3211 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3212 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3213 bool amsdu) 3214 { 3215 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3216 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3217 unsigned int wdg_timeout = 3218 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3219 int queue, ret; 3220 bool alloc_queue = true; 3221 enum iwl_mvm_queue_status queue_status; 3222 u16 ssn; 3223 3224 struct iwl_trans_txq_scd_cfg cfg = { 3225 .sta_id = mvmsta->deflink.sta_id, 3226 .tid = tid, 3227 .frame_limit = buf_size, 3228 .aggregate = true, 3229 }; 3230 3231 /* 3232 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3233 * manager, so this function should never be called in this case. 3234 */ 3235 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3236 return -EINVAL; 3237 3238 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3239 != IWL_MAX_TID_COUNT); 3240 3241 spin_lock_bh(&mvmsta->lock); 3242 ssn = tid_data->ssn; 3243 queue = tid_data->txq_id; 3244 tid_data->state = IWL_AGG_ON; 3245 mvmsta->agg_tids |= BIT(tid); 3246 tid_data->ssn = 0xffff; 3247 tid_data->amsdu_in_ampdu_allowed = amsdu; 3248 spin_unlock_bh(&mvmsta->lock); 3249 3250 if (iwl_mvm_has_new_tx_api(mvm)) { 3251 /* 3252 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3253 * would have failed, so if we are here there is no need to 3254 * allocate a queue. 3255 * However, if aggregation size is different than the default 3256 * size, the scheduler should be reconfigured. 3257 * We cannot do this with the new TX API, so return unsupported 3258 * for now, until it will be offloaded to firmware.. 3259 * Note that if SCD default value changes - this condition 3260 * should be updated as well. 3261 */ 3262 if (buf_size < IWL_FRAME_LIMIT) 3263 return -EOPNOTSUPP; 3264 3265 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3266 if (ret) 3267 return -EIO; 3268 goto out; 3269 } 3270 3271 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3272 3273 queue_status = mvm->queue_info[queue].status; 3274 3275 /* Maybe there is no need to even alloc a queue... */ 3276 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3277 alloc_queue = false; 3278 3279 /* 3280 * Only reconfig the SCD for the queue if the window size has 3281 * changed from current (become smaller) 3282 */ 3283 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3284 /* 3285 * If reconfiguring an existing queue, it first must be 3286 * drained 3287 */ 3288 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3289 BIT(queue)); 3290 if (ret) { 3291 IWL_ERR(mvm, 3292 "Error draining queue before reconfig\n"); 3293 return ret; 3294 } 3295 3296 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3297 mvmsta->deflink.sta_id, tid, 3298 buf_size, ssn); 3299 if (ret) { 3300 IWL_ERR(mvm, 3301 "Error reconfiguring TXQ #%d\n", queue); 3302 return ret; 3303 } 3304 } 3305 3306 if (alloc_queue) 3307 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3308 &cfg, wdg_timeout); 3309 3310 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3311 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3312 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3313 if (ret) 3314 return -EIO; 3315 } 3316 3317 /* No need to mark as reserved */ 3318 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3319 3320 out: 3321 /* 3322 * Even though in theory the peer could have different 3323 * aggregation reorder buffer sizes for different sessions, 3324 * our ucode doesn't allow for that and has a global limit 3325 * for each station. Therefore, use the minimum of all the 3326 * aggregation sessions and our default value. 3327 */ 3328 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3329 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3330 buf_size); 3331 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3332 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3333 3334 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3335 sta->addr, tid); 3336 3337 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3338 } 3339 3340 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3341 struct iwl_mvm_sta *mvmsta, 3342 struct iwl_mvm_tid_data *tid_data) 3343 { 3344 u16 txq_id = tid_data->txq_id; 3345 3346 lockdep_assert_held(&mvm->mutex); 3347 3348 if (iwl_mvm_has_new_tx_api(mvm)) 3349 return; 3350 3351 /* 3352 * The TXQ is marked as reserved only if no traffic came through yet 3353 * This means no traffic has been sent on this TID (agg'd or not), so 3354 * we no longer have use for the queue. Since it hasn't even been 3355 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3356 * free. 3357 */ 3358 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3359 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3360 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3361 } 3362 } 3363 3364 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3365 struct ieee80211_sta *sta, u16 tid) 3366 { 3367 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3368 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3369 u16 txq_id; 3370 int err; 3371 3372 /* 3373 * If mac80211 is cleaning its state, then say that we finished since 3374 * our state has been cleared anyway. 3375 */ 3376 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3377 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3378 return 0; 3379 } 3380 3381 spin_lock_bh(&mvmsta->lock); 3382 3383 txq_id = tid_data->txq_id; 3384 3385 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3386 mvmsta->deflink.sta_id, tid, txq_id, 3387 tid_data->state); 3388 3389 mvmsta->agg_tids &= ~BIT(tid); 3390 3391 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3392 3393 switch (tid_data->state) { 3394 case IWL_AGG_ON: 3395 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3396 3397 IWL_DEBUG_TX_QUEUES(mvm, 3398 "ssn = %d, next_recl = %d\n", 3399 tid_data->ssn, tid_data->next_reclaimed); 3400 3401 tid_data->ssn = 0xffff; 3402 tid_data->state = IWL_AGG_OFF; 3403 spin_unlock_bh(&mvmsta->lock); 3404 3405 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3406 3407 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3408 return 0; 3409 case IWL_AGG_STARTING: 3410 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3411 /* 3412 * The agg session has been stopped before it was set up. This 3413 * can happen when the AddBA timer times out for example. 3414 */ 3415 3416 /* No barriers since we are under mutex */ 3417 lockdep_assert_held(&mvm->mutex); 3418 3419 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3420 tid_data->state = IWL_AGG_OFF; 3421 err = 0; 3422 break; 3423 default: 3424 IWL_ERR(mvm, 3425 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3426 mvmsta->deflink.sta_id, tid, tid_data->state); 3427 IWL_ERR(mvm, 3428 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3429 err = -EINVAL; 3430 } 3431 3432 spin_unlock_bh(&mvmsta->lock); 3433 3434 return err; 3435 } 3436 3437 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3438 struct ieee80211_sta *sta, u16 tid) 3439 { 3440 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3441 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3442 u16 txq_id; 3443 enum iwl_mvm_agg_state old_state; 3444 3445 /* 3446 * First set the agg state to OFF to avoid calling 3447 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3448 */ 3449 spin_lock_bh(&mvmsta->lock); 3450 txq_id = tid_data->txq_id; 3451 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3452 mvmsta->deflink.sta_id, tid, txq_id, 3453 tid_data->state); 3454 old_state = tid_data->state; 3455 tid_data->state = IWL_AGG_OFF; 3456 mvmsta->agg_tids &= ~BIT(tid); 3457 spin_unlock_bh(&mvmsta->lock); 3458 3459 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3460 3461 if (old_state >= IWL_AGG_ON) { 3462 iwl_mvm_drain_sta(mvm, mvmsta, true); 3463 3464 if (iwl_mvm_has_new_tx_api(mvm)) { 3465 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3466 BIT(tid))) 3467 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3468 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3469 } else { 3470 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3471 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3472 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3473 } 3474 3475 iwl_mvm_drain_sta(mvm, mvmsta, false); 3476 3477 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3478 } 3479 3480 return 0; 3481 } 3482 3483 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3484 { 3485 int i, max = -1, max_offs = -1; 3486 3487 lockdep_assert_held(&mvm->mutex); 3488 3489 /* Pick the unused key offset with the highest 'deleted' 3490 * counter. Every time a key is deleted, all the counters 3491 * are incremented and the one that was just deleted is 3492 * reset to zero. Thus, the highest counter is the one 3493 * that was deleted longest ago. Pick that one. 3494 */ 3495 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3496 if (test_bit(i, mvm->fw_key_table)) 3497 continue; 3498 if (mvm->fw_key_deleted[i] > max) { 3499 max = mvm->fw_key_deleted[i]; 3500 max_offs = i; 3501 } 3502 } 3503 3504 if (max_offs < 0) 3505 return STA_KEY_IDX_INVALID; 3506 3507 return max_offs; 3508 } 3509 3510 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3511 struct ieee80211_vif *vif, 3512 struct ieee80211_sta *sta) 3513 { 3514 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3515 3516 if (sta) 3517 return iwl_mvm_sta_from_mac80211(sta); 3518 3519 /* 3520 * The device expects GTKs for station interfaces to be 3521 * installed as GTKs for the AP station. If we have no 3522 * station ID, then use AP's station ID. 3523 */ 3524 if (vif->type == NL80211_IFTYPE_STATION && 3525 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3526 u8 sta_id = mvmvif->deflink.ap_sta_id; 3527 3528 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3529 lockdep_is_held(&mvm->mutex)); 3530 3531 /* 3532 * It is possible that the 'sta' parameter is NULL, 3533 * for example when a GTK is removed - the sta_id will then 3534 * be the AP ID, and no station was passed by mac80211. 3535 */ 3536 if (IS_ERR_OR_NULL(sta)) 3537 return NULL; 3538 3539 return iwl_mvm_sta_from_mac80211(sta); 3540 } 3541 3542 return NULL; 3543 } 3544 3545 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3546 { 3547 int i; 3548 3549 for (i = len - 1; i >= 0; i--) { 3550 if (pn1[i] > pn2[i]) 3551 return 1; 3552 if (pn1[i] < pn2[i]) 3553 return -1; 3554 } 3555 3556 return 0; 3557 } 3558 3559 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3560 u32 sta_id, 3561 struct ieee80211_key_conf *key, bool mcast, 3562 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3563 u8 key_offset, bool mfp) 3564 { 3565 union { 3566 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3567 struct iwl_mvm_add_sta_key_cmd cmd; 3568 } u = {}; 3569 __le16 key_flags; 3570 int ret; 3571 u32 status; 3572 u16 keyidx; 3573 u64 pn = 0; 3574 int i, size; 3575 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3576 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3577 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3578 new_api ? 2 : 1); 3579 3580 if (sta_id == IWL_MVM_INVALID_STA) 3581 return -EINVAL; 3582 3583 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3584 STA_KEY_FLG_KEYID_MSK; 3585 key_flags = cpu_to_le16(keyidx); 3586 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3587 3588 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU) 3589 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP); 3590 3591 switch (key->cipher) { 3592 case WLAN_CIPHER_SUITE_TKIP: 3593 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3594 if (api_ver >= 2) { 3595 memcpy((void *)&u.cmd.tx_mic_key, 3596 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3597 IWL_MIC_KEY_SIZE); 3598 3599 memcpy((void *)&u.cmd.rx_mic_key, 3600 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3601 IWL_MIC_KEY_SIZE); 3602 pn = atomic64_read(&key->tx_pn); 3603 3604 } else { 3605 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3606 for (i = 0; i < 5; i++) 3607 u.cmd_v1.tkip_rx_ttak[i] = 3608 cpu_to_le16(tkip_p1k[i]); 3609 } 3610 memcpy(u.cmd.common.key, key->key, key->keylen); 3611 break; 3612 case WLAN_CIPHER_SUITE_CCMP: 3613 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3614 memcpy(u.cmd.common.key, key->key, key->keylen); 3615 if (api_ver >= 2) 3616 pn = atomic64_read(&key->tx_pn); 3617 break; 3618 case WLAN_CIPHER_SUITE_WEP104: 3619 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3620 fallthrough; 3621 case WLAN_CIPHER_SUITE_WEP40: 3622 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3623 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3624 break; 3625 case WLAN_CIPHER_SUITE_GCMP_256: 3626 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3627 fallthrough; 3628 case WLAN_CIPHER_SUITE_GCMP: 3629 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3630 memcpy(u.cmd.common.key, key->key, key->keylen); 3631 if (api_ver >= 2) 3632 pn = atomic64_read(&key->tx_pn); 3633 break; 3634 default: 3635 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3636 memcpy(u.cmd.common.key, key->key, key->keylen); 3637 } 3638 3639 if (mcast) 3640 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3641 if (mfp) 3642 key_flags |= cpu_to_le16(STA_KEY_MFP); 3643 3644 u.cmd.common.key_offset = key_offset; 3645 u.cmd.common.key_flags = key_flags; 3646 u.cmd.common.sta_id = sta_id; 3647 3648 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3649 i = 0; 3650 else 3651 i = -1; 3652 3653 for (; i < IEEE80211_NUM_TIDS; i++) { 3654 struct ieee80211_key_seq seq = {}; 3655 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3656 int rx_pn_len = 8; 3657 /* there's a hole at 2/3 in FW format depending on version */ 3658 int hole = api_ver >= 3 ? 0 : 2; 3659 3660 ieee80211_get_key_rx_seq(key, i, &seq); 3661 3662 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3663 rx_pn[0] = seq.tkip.iv16; 3664 rx_pn[1] = seq.tkip.iv16 >> 8; 3665 rx_pn[2 + hole] = seq.tkip.iv32; 3666 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3667 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3668 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3669 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3670 rx_pn = seq.hw.seq; 3671 rx_pn_len = seq.hw.seq_len; 3672 } else { 3673 rx_pn[0] = seq.ccmp.pn[0]; 3674 rx_pn[1] = seq.ccmp.pn[1]; 3675 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3676 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3677 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3678 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3679 } 3680 3681 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3682 rx_pn_len) > 0) 3683 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3684 rx_pn_len); 3685 } 3686 3687 if (api_ver >= 2) { 3688 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3689 size = sizeof(u.cmd); 3690 } else { 3691 size = sizeof(u.cmd_v1); 3692 } 3693 3694 status = ADD_STA_SUCCESS; 3695 if (cmd_flags & CMD_ASYNC) 3696 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3697 &u.cmd); 3698 else 3699 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3700 &u.cmd, &status); 3701 3702 switch (status) { 3703 case ADD_STA_SUCCESS: 3704 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3705 break; 3706 default: 3707 ret = -EIO; 3708 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3709 break; 3710 } 3711 3712 return ret; 3713 } 3714 3715 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3716 struct ieee80211_key_conf *keyconf, 3717 u8 sta_id, bool remove_key) 3718 { 3719 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3720 3721 /* verify the key details match the required command's expectations */ 3722 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3723 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3724 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3725 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3726 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3727 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3728 return -EINVAL; 3729 3730 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3731 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3732 return -EINVAL; 3733 3734 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3735 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3736 3737 if (remove_key) { 3738 /* This is a valid situation for IGTK */ 3739 if (sta_id == IWL_MVM_INVALID_STA) 3740 return 0; 3741 3742 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3743 } else { 3744 struct ieee80211_key_seq seq; 3745 const u8 *pn; 3746 3747 switch (keyconf->cipher) { 3748 case WLAN_CIPHER_SUITE_AES_CMAC: 3749 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3750 break; 3751 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3752 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3753 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3754 break; 3755 default: 3756 return -EINVAL; 3757 } 3758 3759 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3760 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3761 igtk_cmd.ctrl_flags |= 3762 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3763 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3764 pn = seq.aes_cmac.pn; 3765 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3766 ((u64) pn[4] << 8) | 3767 ((u64) pn[3] << 16) | 3768 ((u64) pn[2] << 24) | 3769 ((u64) pn[1] << 32) | 3770 ((u64) pn[0] << 40)); 3771 } 3772 3773 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3774 remove_key ? "removing" : "installing", 3775 keyconf->keyidx >= 6 ? "B" : "", 3776 keyconf->keyidx, igtk_cmd.sta_id); 3777 3778 if (!iwl_mvm_has_new_rx_api(mvm)) { 3779 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3780 .ctrl_flags = igtk_cmd.ctrl_flags, 3781 .key_id = igtk_cmd.key_id, 3782 .sta_id = igtk_cmd.sta_id, 3783 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3784 }; 3785 3786 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3787 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3788 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3789 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3790 } 3791 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3792 sizeof(igtk_cmd), &igtk_cmd); 3793 } 3794 3795 3796 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3797 struct ieee80211_vif *vif, 3798 struct ieee80211_sta *sta) 3799 { 3800 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3801 3802 if (sta) 3803 return sta->addr; 3804 3805 if (vif->type == NL80211_IFTYPE_STATION && 3806 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3807 u8 sta_id = mvmvif->deflink.ap_sta_id; 3808 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3809 lockdep_is_held(&mvm->mutex)); 3810 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3811 return NULL; 3812 3813 return sta->addr; 3814 } 3815 3816 3817 return NULL; 3818 } 3819 3820 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3821 struct ieee80211_vif *vif, 3822 struct ieee80211_sta *sta, 3823 struct ieee80211_key_conf *keyconf, 3824 u8 key_offset, 3825 bool mcast) 3826 { 3827 const u8 *addr; 3828 struct ieee80211_key_seq seq; 3829 u16 p1k[5]; 3830 u32 sta_id; 3831 bool mfp = false; 3832 3833 if (sta) { 3834 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3835 3836 sta_id = mvm_sta->deflink.sta_id; 3837 mfp = sta->mfp; 3838 } else if (vif->type == NL80211_IFTYPE_AP && 3839 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3840 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3841 3842 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3843 } else { 3844 IWL_ERR(mvm, "Failed to find station id\n"); 3845 return -EINVAL; 3846 } 3847 3848 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3849 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3850 if (!addr) { 3851 IWL_ERR(mvm, "Failed to find mac address\n"); 3852 return -EINVAL; 3853 } 3854 3855 /* get phase 1 key from mac80211 */ 3856 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3857 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3858 3859 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3860 seq.tkip.iv32, p1k, 0, key_offset, 3861 mfp); 3862 } 3863 3864 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3865 0, NULL, 0, key_offset, mfp); 3866 } 3867 3868 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3869 struct ieee80211_vif *vif, 3870 struct ieee80211_sta *sta, 3871 struct ieee80211_key_conf *keyconf, 3872 u8 key_offset) 3873 { 3874 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3875 struct iwl_mvm_sta *mvm_sta; 3876 u8 sta_id = IWL_MVM_INVALID_STA; 3877 int ret; 3878 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3879 3880 lockdep_assert_held(&mvm->mutex); 3881 3882 if (vif->type != NL80211_IFTYPE_AP || 3883 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3884 /* Get the station id from the mvm local station table */ 3885 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3886 if (!mvm_sta) { 3887 IWL_ERR(mvm, "Failed to find station\n"); 3888 return -EINVAL; 3889 } 3890 sta_id = mvm_sta->deflink.sta_id; 3891 3892 /* 3893 * It is possible that the 'sta' parameter is NULL, and thus 3894 * there is a need to retrieve the sta from the local station 3895 * table. 3896 */ 3897 if (!sta) { 3898 sta = rcu_dereference_protected( 3899 mvm->fw_id_to_mac_id[sta_id], 3900 lockdep_is_held(&mvm->mutex)); 3901 if (IS_ERR_OR_NULL(sta)) { 3902 IWL_ERR(mvm, "Invalid station id\n"); 3903 return -EINVAL; 3904 } 3905 } 3906 3907 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3908 return -EINVAL; 3909 } else { 3910 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3911 3912 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3913 } 3914 3915 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3916 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3917 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3918 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3919 goto end; 3920 } 3921 3922 /* If the key_offset is not pre-assigned, we need to find a 3923 * new offset to use. In normal cases, the offset is not 3924 * pre-assigned, but during HW_RESTART we want to reuse the 3925 * same indices, so we pass them when this function is called. 3926 * 3927 * In D3 entry, we need to hardcoded the indices (because the 3928 * firmware hardcodes the PTK offset to 0). In this case, we 3929 * need to make sure we don't overwrite the hw_key_idx in the 3930 * keyconf structure, because otherwise we cannot configure 3931 * the original ones back when resuming. 3932 */ 3933 if (key_offset == STA_KEY_IDX_INVALID) { 3934 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3935 if (key_offset == STA_KEY_IDX_INVALID) 3936 return -ENOSPC; 3937 keyconf->hw_key_idx = key_offset; 3938 } 3939 3940 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3941 if (ret) 3942 goto end; 3943 3944 /* 3945 * For WEP, the same key is used for multicast and unicast. Upload it 3946 * again, using the same key offset, and now pointing the other one 3947 * to the same key slot (offset). 3948 * If this fails, remove the original as well. 3949 */ 3950 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3951 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3952 sta) { 3953 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3954 key_offset, !mcast); 3955 if (ret) { 3956 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3957 goto end; 3958 } 3959 } 3960 3961 __set_bit(key_offset, mvm->fw_key_table); 3962 3963 end: 3964 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3965 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3966 sta ? sta->addr : zero_addr, ret); 3967 return ret; 3968 } 3969 3970 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3971 struct ieee80211_vif *vif, 3972 struct ieee80211_sta *sta, 3973 struct ieee80211_key_conf *keyconf) 3974 { 3975 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3976 struct iwl_mvm_sta *mvm_sta; 3977 u8 sta_id = IWL_MVM_INVALID_STA; 3978 int ret, i; 3979 3980 lockdep_assert_held(&mvm->mutex); 3981 3982 /* Get the station from the mvm local station table */ 3983 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3984 if (mvm_sta) 3985 sta_id = mvm_sta->deflink.sta_id; 3986 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3987 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3988 3989 3990 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3991 keyconf->keyidx, sta_id); 3992 3993 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3994 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3995 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3996 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3997 3998 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3999 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 4000 keyconf->hw_key_idx); 4001 return -ENOENT; 4002 } 4003 4004 /* track which key was deleted last */ 4005 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 4006 if (mvm->fw_key_deleted[i] < U8_MAX) 4007 mvm->fw_key_deleted[i]++; 4008 } 4009 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 4010 4011 if (sta && !mvm_sta) { 4012 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 4013 return 0; 4014 } 4015 4016 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 4017 if (ret) 4018 return ret; 4019 4020 /* delete WEP key twice to get rid of (now useless) offset */ 4021 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 4022 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 4023 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 4024 4025 return ret; 4026 } 4027 4028 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 4029 struct ieee80211_vif *vif, 4030 struct ieee80211_key_conf *keyconf, 4031 struct ieee80211_sta *sta, u32 iv32, 4032 u16 *phase1key) 4033 { 4034 struct iwl_mvm_sta *mvm_sta; 4035 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4036 bool mfp = sta ? sta->mfp : false; 4037 4038 rcu_read_lock(); 4039 4040 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4041 if (WARN_ON_ONCE(!mvm_sta)) 4042 goto unlock; 4043 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4044 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4045 mfp); 4046 4047 unlock: 4048 rcu_read_unlock(); 4049 } 4050 4051 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4052 struct ieee80211_sta *sta) 4053 { 4054 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4055 struct iwl_mvm_add_sta_cmd cmd = { 4056 .add_modify = STA_MODE_MODIFY, 4057 .sta_id = mvmsta->deflink.sta_id, 4058 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4059 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4060 }; 4061 int ret; 4062 4063 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4064 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4065 if (ret) 4066 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4067 } 4068 4069 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4070 struct ieee80211_sta *sta, 4071 enum ieee80211_frame_release_type reason, 4072 u16 cnt, u16 tids, bool more_data, 4073 bool single_sta_queue) 4074 { 4075 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4076 struct iwl_mvm_add_sta_cmd cmd = { 4077 .add_modify = STA_MODE_MODIFY, 4078 .sta_id = mvmsta->deflink.sta_id, 4079 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4080 .sleep_tx_count = cpu_to_le16(cnt), 4081 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4082 }; 4083 int tid, ret; 4084 unsigned long _tids = tids; 4085 4086 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4087 * Note that this field is reserved and unused by firmware not 4088 * supporting GO uAPSD, so it's safe to always do this. 4089 */ 4090 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4091 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4092 4093 /* If we're releasing frames from aggregation or dqa queues then check 4094 * if all the queues that we're releasing frames from, combined, have: 4095 * - more frames than the service period, in which case more_data 4096 * needs to be set 4097 * - fewer than 'cnt' frames, in which case we need to adjust the 4098 * firmware command (but do that unconditionally) 4099 */ 4100 if (single_sta_queue) { 4101 int remaining = cnt; 4102 int sleep_tx_count; 4103 4104 spin_lock_bh(&mvmsta->lock); 4105 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4106 struct iwl_mvm_tid_data *tid_data; 4107 u16 n_queued; 4108 4109 tid_data = &mvmsta->tid_data[tid]; 4110 4111 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4112 if (n_queued > remaining) { 4113 more_data = true; 4114 remaining = 0; 4115 break; 4116 } 4117 remaining -= n_queued; 4118 } 4119 sleep_tx_count = cnt - remaining; 4120 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4121 mvmsta->sleep_tx_count = sleep_tx_count; 4122 spin_unlock_bh(&mvmsta->lock); 4123 4124 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4125 if (WARN_ON(cnt - remaining == 0)) { 4126 ieee80211_sta_eosp(sta); 4127 return; 4128 } 4129 } 4130 4131 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4132 if (more_data) 4133 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4134 4135 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4136 mvmsta->next_status_eosp = true; 4137 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4138 } else { 4139 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4140 } 4141 4142 /* block the Tx queues until the FW updated the sleep Tx count */ 4143 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4144 CMD_ASYNC | CMD_BLOCK_TXQS, 4145 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4146 if (ret) 4147 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4148 } 4149 4150 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4151 struct iwl_rx_cmd_buffer *rxb) 4152 { 4153 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4154 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4155 struct ieee80211_sta *sta; 4156 u32 sta_id = le32_to_cpu(notif->sta_id); 4157 4158 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4159 return; 4160 4161 rcu_read_lock(); 4162 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4163 if (!IS_ERR_OR_NULL(sta)) 4164 ieee80211_sta_eosp(sta); 4165 rcu_read_unlock(); 4166 } 4167 4168 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4169 struct iwl_mvm_sta *mvmsta, 4170 bool disable) 4171 { 4172 struct iwl_mvm_add_sta_cmd cmd = { 4173 .add_modify = STA_MODE_MODIFY, 4174 .sta_id = mvmsta->deflink.sta_id, 4175 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4176 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4177 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4178 }; 4179 int ret; 4180 4181 if (mvm->mld_api_is_used) { 4182 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4183 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4184 return; 4185 } 4186 4187 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4188 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4189 if (ret) 4190 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4191 } 4192 4193 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4194 struct ieee80211_sta *sta, 4195 bool disable) 4196 { 4197 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4198 4199 if (mvm->mld_api_is_used) { 4200 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4201 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4202 return; 4203 } 4204 4205 spin_lock_bh(&mvm_sta->lock); 4206 4207 if (mvm_sta->disable_tx == disable) { 4208 spin_unlock_bh(&mvm_sta->lock); 4209 return; 4210 } 4211 4212 mvm_sta->disable_tx = disable; 4213 4214 /* 4215 * If sta PS state is handled by mac80211, tell it to start/stop 4216 * queuing tx for this station. 4217 */ 4218 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4219 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4220 4221 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4222 4223 spin_unlock_bh(&mvm_sta->lock); 4224 } 4225 4226 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4227 struct iwl_mvm_vif *mvmvif, 4228 struct iwl_mvm_int_sta *sta, 4229 bool disable) 4230 { 4231 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4232 struct iwl_mvm_add_sta_cmd cmd = { 4233 .add_modify = STA_MODE_MODIFY, 4234 .sta_id = sta->sta_id, 4235 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4236 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4237 .mac_id_n_color = cpu_to_le32(id), 4238 }; 4239 int ret; 4240 4241 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4242 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4243 if (ret) 4244 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4245 } 4246 4247 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4248 struct iwl_mvm_vif *mvmvif, 4249 bool disable) 4250 { 4251 struct ieee80211_sta *sta; 4252 struct iwl_mvm_sta *mvm_sta; 4253 int i; 4254 4255 if (mvm->mld_api_is_used) { 4256 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4257 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, 4258 disable); 4259 return; 4260 } 4261 4262 rcu_read_lock(); 4263 4264 /* Block/unblock all the stations of the given mvmvif */ 4265 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4266 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4267 if (IS_ERR_OR_NULL(sta)) 4268 continue; 4269 4270 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4271 if (mvm_sta->mac_id_n_color != 4272 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4273 continue; 4274 4275 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4276 } 4277 4278 rcu_read_unlock(); 4279 4280 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4281 return; 4282 4283 /* Need to block/unblock also multicast station */ 4284 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4285 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4286 &mvmvif->deflink.mcast_sta, 4287 disable); 4288 4289 /* 4290 * Only unblock the broadcast station (FW blocks it for immediate 4291 * quiet, not the driver) 4292 */ 4293 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4294 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4295 &mvmvif->deflink.bcast_sta, 4296 disable); 4297 } 4298 4299 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4300 { 4301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4302 struct iwl_mvm_sta *mvmsta; 4303 4304 rcu_read_lock(); 4305 4306 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4307 4308 if (mvmsta) 4309 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4310 4311 rcu_read_unlock(); 4312 } 4313 4314 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4315 { 4316 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4317 4318 /* 4319 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4320 * to align the wrap around of ssn so we compare relevant values. 4321 */ 4322 if (mvm->trans->trans_cfg->gen2) 4323 sn &= 0xff; 4324 4325 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4326 } 4327 4328 #if defined(__linux__) 4329 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4330 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4331 u8 *key, u32 key_len, 4332 struct ieee80211_key_conf *keyconf) 4333 { 4334 int ret; 4335 u16 queue; 4336 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4337 unsigned int wdg_timeout = 4338 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 4339 bool mld = iwl_mvm_has_mld_api(mvm->fw); 4340 u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK; 4341 4342 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4343 NL80211_IFTYPE_UNSPECIFIED, type); 4344 if (ret) 4345 return ret; 4346 4347 if (mld) 4348 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr, 4349 mvmvif->deflink.fw_link_id, 4350 &queue, 4351 IWL_MAX_TID_COUNT, 4352 &wdg_timeout); 4353 else 4354 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, 4355 mvmvif->color, addr, sta, 4356 &queue, 4357 IWL_MVM_TX_FIFO_BE); 4358 if (ret) 4359 goto out; 4360 4361 keyconf->cipher = cipher; 4362 memcpy(keyconf->key, key, key_len); 4363 keyconf->keylen = key_len; 4364 keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE; 4365 4366 if (mld) { 4367 /* The MFP flag is set according to the station mfp field. Since 4368 * we don't have a station, set it manually. 4369 */ 4370 u32 key_flags = 4371 iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) | 4372 IWL_SEC_KEY_FLAG_MFP; 4373 u32 sta_mask = BIT(sta->sta_id); 4374 4375 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf); 4376 } else { 4377 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4378 0, NULL, 0, 0, true); 4379 } 4380 4381 out: 4382 if (ret) 4383 iwl_mvm_dealloc_int_sta(mvm, sta); 4384 return ret; 4385 } 4386 #endif 4387 4388 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4389 struct ieee80211_vif *vif, 4390 u32 id) 4391 { 4392 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4393 .id = cpu_to_le32(id), 4394 }; 4395 int ret; 4396 4397 ret = iwl_mvm_send_cmd_pdu(mvm, 4398 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4399 CMD_ASYNC, 4400 sizeof(cancel_channel_switch_cmd), 4401 &cancel_channel_switch_cmd); 4402 if (ret) 4403 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4404 } 4405 4406 static int iwl_mvm_fw_sta_id_to_fw_link_id(struct iwl_mvm_vif *mvmvif, 4407 u8 fw_sta_id) 4408 { 4409 struct ieee80211_link_sta *link_sta = 4410 rcu_dereference(mvmvif->mvm->fw_id_to_link_sta[fw_sta_id]); 4411 struct iwl_mvm_vif_link_info *link; 4412 4413 if (WARN_ON_ONCE(!link_sta)) 4414 return -EINVAL; 4415 4416 link = mvmvif->link[link_sta->link_id]; 4417 4418 if (WARN_ON_ONCE(!link)) 4419 return -EINVAL; 4420 4421 return link->fw_link_id; 4422 } 4423 4424 #define IWL_MVM_TPT_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ) 4425 4426 void iwl_mvm_count_mpdu(struct iwl_mvm_sta *mvm_sta, u8 fw_sta_id, u32 count, 4427 bool tx, int queue) 4428 { 4429 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvm_sta->vif); 4430 struct iwl_mvm *mvm = mvmvif->mvm; 4431 struct iwl_mvm_tpt_counter *queue_counter; 4432 struct iwl_mvm_mpdu_counter *link_counter; 4433 u32 total_mpdus = 0; 4434 int fw_link_id; 4435 4436 /* Count only for a BSS sta, and only when EMLSR is possible */ 4437 if (!mvm_sta->mpdu_counters) 4438 return; 4439 4440 /* Map sta id to link id */ 4441 fw_link_id = iwl_mvm_fw_sta_id_to_fw_link_id(mvmvif, fw_sta_id); 4442 if (fw_link_id < 0) 4443 return; 4444 4445 queue_counter = &mvm_sta->mpdu_counters[queue]; 4446 link_counter = &queue_counter->per_link[fw_link_id]; 4447 4448 spin_lock_bh(&queue_counter->lock); 4449 4450 if (tx) 4451 link_counter->tx += count; 4452 else 4453 link_counter->rx += count; 4454 4455 /* 4456 * When not in EMLSR, the window and the decision to enter EMLSR are 4457 * handled during counting, when in EMLSR - in the statistics flow 4458 */ 4459 if (mvmvif->esr_active) 4460 goto out; 4461 4462 if (time_is_before_jiffies(queue_counter->window_start + 4463 IWL_MVM_TPT_COUNT_WINDOW)) { 4464 memset(queue_counter->per_link, 0, 4465 sizeof(queue_counter->per_link)); 4466 queue_counter->window_start = jiffies; 4467 4468 IWL_DEBUG_STATS(mvm, "MPDU counters are cleared\n"); 4469 } 4470 4471 for (int i = 0; i < IWL_MVM_FW_MAX_LINK_ID; i++) 4472 total_mpdus += tx ? queue_counter->per_link[i].tx : 4473 queue_counter->per_link[i].rx; 4474 4475 if (total_mpdus > IWL_MVM_ENTER_ESR_TPT_THRESH) 4476 wiphy_work_queue(mvmvif->mvm->hw->wiphy, 4477 &mvmvif->unblock_esr_tpt_wk); 4478 4479 out: 4480 spin_unlock_bh(&queue_counter->lock); 4481 } 4482