1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2021 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 28 enum nl80211_iftype iftype) 29 { 30 int sta_id; 31 u32 reserved_ids = 0; 32 33 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 34 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 35 36 lockdep_assert_held(&mvm->mutex); 37 38 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 39 if (iftype != NL80211_IFTYPE_STATION) 40 reserved_ids = BIT(0); 41 42 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 43 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 44 if (BIT(sta_id) & reserved_ids) 45 continue; 46 47 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 48 lockdep_is_held(&mvm->mutex))) 49 return sta_id; 50 } 51 return IWL_MVM_INVALID_STA; 52 } 53 54 /* send station add/update command to firmware */ 55 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 56 bool update, unsigned int flags) 57 { 58 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 59 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 60 .sta_id = mvm_sta->sta_id, 61 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 62 .add_modify = update ? 1 : 0, 63 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 64 STA_FLG_MIMO_EN_MSK | 65 STA_FLG_RTS_MIMO_PROT), 66 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 67 }; 68 int ret; 69 u32 status; 70 u32 agg_size = 0, mpdu_dens = 0; 71 72 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 73 add_sta_cmd.station_type = mvm_sta->sta_type; 74 75 if (!update || (flags & STA_MODIFY_QUEUES)) { 76 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 77 78 if (!iwl_mvm_has_new_tx_api(mvm)) { 79 add_sta_cmd.tfd_queue_msk = 80 cpu_to_le32(mvm_sta->tfd_queue_msk); 81 82 if (flags & STA_MODIFY_QUEUES) 83 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 84 } else { 85 WARN_ON(flags & STA_MODIFY_QUEUES); 86 } 87 } 88 89 switch (sta->bandwidth) { 90 case IEEE80211_STA_RX_BW_160: 91 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 92 fallthrough; 93 case IEEE80211_STA_RX_BW_80: 94 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 95 fallthrough; 96 case IEEE80211_STA_RX_BW_40: 97 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 98 fallthrough; 99 case IEEE80211_STA_RX_BW_20: 100 if (sta->ht_cap.ht_supported) 101 add_sta_cmd.station_flags |= 102 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 103 break; 104 } 105 106 switch (sta->rx_nss) { 107 case 1: 108 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 109 break; 110 case 2: 111 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 112 break; 113 case 3 ... 8: 114 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 115 break; 116 } 117 118 switch (sta->smps_mode) { 119 case IEEE80211_SMPS_AUTOMATIC: 120 case IEEE80211_SMPS_NUM_MODES: 121 WARN_ON(1); 122 break; 123 case IEEE80211_SMPS_STATIC: 124 /* override NSS */ 125 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 126 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 127 break; 128 case IEEE80211_SMPS_DYNAMIC: 129 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 130 break; 131 case IEEE80211_SMPS_OFF: 132 /* nothing */ 133 break; 134 } 135 136 if (sta->ht_cap.ht_supported) { 137 add_sta_cmd.station_flags_msk |= 138 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 139 STA_FLG_AGG_MPDU_DENS_MSK); 140 141 mpdu_dens = sta->ht_cap.ampdu_density; 142 } 143 144 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 145 add_sta_cmd.station_flags_msk |= 146 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 147 STA_FLG_AGG_MPDU_DENS_MSK); 148 149 mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, 150 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 151 agg_size = le16_get_bits(sta->he_6ghz_capa.capa, 152 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 153 } else 154 if (sta->vht_cap.vht_supported) { 155 agg_size = sta->vht_cap.cap & 156 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 157 agg_size >>= 158 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 159 } else if (sta->ht_cap.ht_supported) { 160 agg_size = sta->ht_cap.ampdu_factor; 161 } 162 163 /* D6.0 10.12.2 A-MPDU length limit rules 164 * A STA indicates the maximum length of the A-MPDU preEOF padding 165 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 166 * Exponent field in its HT Capabilities, VHT Capabilities, 167 * and HE 6 GHz Band Capabilities elements (if present) and the 168 * Maximum AMPDU Length Exponent Extension field in its HE 169 * Capabilities element 170 */ 171 if (sta->he_cap.has_he) 172 agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], 173 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 174 175 /* Limit to max A-MPDU supported by FW */ 176 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 177 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 178 STA_FLG_MAX_AGG_SIZE_SHIFT); 179 180 add_sta_cmd.station_flags |= 181 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 182 add_sta_cmd.station_flags |= 183 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 184 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 185 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 186 187 if (sta->wme) { 188 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 189 190 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 191 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 192 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 193 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 194 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 195 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 196 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 197 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 198 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 199 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 200 } 201 202 status = ADD_STA_SUCCESS; 203 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 204 iwl_mvm_add_sta_cmd_size(mvm), 205 &add_sta_cmd, &status); 206 if (ret) 207 return ret; 208 209 switch (status & IWL_ADD_STA_STATUS_MASK) { 210 case ADD_STA_SUCCESS: 211 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 212 break; 213 default: 214 ret = -EIO; 215 IWL_ERR(mvm, "ADD_STA failed\n"); 216 break; 217 } 218 219 return ret; 220 } 221 222 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 223 { 224 struct iwl_mvm_baid_data *data = 225 from_timer(data, t, session_timer); 226 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 227 struct iwl_mvm_baid_data *ba_data; 228 struct ieee80211_sta *sta; 229 struct iwl_mvm_sta *mvm_sta; 230 unsigned long timeout; 231 232 rcu_read_lock(); 233 234 ba_data = rcu_dereference(*rcu_ptr); 235 236 if (WARN_ON(!ba_data)) 237 goto unlock; 238 239 if (!ba_data->timeout) 240 goto unlock; 241 242 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 243 if (time_is_after_jiffies(timeout)) { 244 mod_timer(&ba_data->session_timer, timeout); 245 goto unlock; 246 } 247 248 /* Timer expired */ 249 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 250 251 /* 252 * sta should be valid unless the following happens: 253 * The firmware asserts which triggers a reconfig flow, but 254 * the reconfig fails before we set the pointer to sta into 255 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 256 * A-MDPU and hence the timer continues to run. Then, the 257 * timer expires and sta is NULL. 258 */ 259 if (!sta) 260 goto unlock; 261 262 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 263 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 264 sta->addr, ba_data->tid); 265 unlock: 266 rcu_read_unlock(); 267 } 268 269 /* Disable aggregations for a bitmap of TIDs for a given station */ 270 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 271 unsigned long disable_agg_tids, 272 bool remove_queue) 273 { 274 struct iwl_mvm_add_sta_cmd cmd = {}; 275 struct ieee80211_sta *sta; 276 struct iwl_mvm_sta *mvmsta; 277 u32 status; 278 u8 sta_id; 279 280 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 281 return -EINVAL; 282 283 sta_id = mvm->queue_info[queue].ra_sta_id; 284 285 rcu_read_lock(); 286 287 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 288 289 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 290 rcu_read_unlock(); 291 return -EINVAL; 292 } 293 294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 295 296 mvmsta->tid_disable_agg |= disable_agg_tids; 297 298 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 299 cmd.sta_id = mvmsta->sta_id; 300 cmd.add_modify = STA_MODE_MODIFY; 301 cmd.modify_mask = STA_MODIFY_QUEUES; 302 if (disable_agg_tids) 303 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 304 if (remove_queue) 305 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 306 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 307 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 308 309 rcu_read_unlock(); 310 311 /* Notify FW of queue removal from the STA queues */ 312 status = ADD_STA_SUCCESS; 313 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 314 iwl_mvm_add_sta_cmd_size(mvm), 315 &cmd, &status); 316 } 317 318 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 319 u16 *queueptr, u8 tid, u8 flags) 320 { 321 int queue = *queueptr; 322 struct iwl_scd_txq_cfg_cmd cmd = { 323 .scd_queue = queue, 324 .action = SCD_CFG_DISABLE_QUEUE, 325 }; 326 int ret; 327 328 if (iwl_mvm_has_new_tx_api(mvm)) { 329 iwl_trans_txq_free(mvm->trans, queue); 330 *queueptr = IWL_MVM_INVALID_QUEUE; 331 332 return 0; 333 } 334 335 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 336 return 0; 337 338 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 339 340 cmd.action = mvm->queue_info[queue].tid_bitmap ? 341 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 342 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 343 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 344 345 IWL_DEBUG_TX_QUEUES(mvm, 346 "Disabling TXQ #%d tids=0x%x\n", 347 queue, 348 mvm->queue_info[queue].tid_bitmap); 349 350 /* If the queue is still enabled - nothing left to do in this func */ 351 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 352 return 0; 353 354 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 355 cmd.tid = mvm->queue_info[queue].txq_tid; 356 357 /* Make sure queue info is correct even though we overwrite it */ 358 WARN(mvm->queue_info[queue].tid_bitmap, 359 "TXQ #%d info out-of-sync - tids=0x%x\n", 360 queue, mvm->queue_info[queue].tid_bitmap); 361 362 /* If we are here - the queue is freed and we can zero out these vals */ 363 mvm->queue_info[queue].tid_bitmap = 0; 364 365 if (sta) { 366 struct iwl_mvm_txq *mvmtxq = 367 iwl_mvm_txq_from_tid(sta, tid); 368 369 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 370 } 371 372 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 373 mvm->queue_info[queue].reserved = false; 374 375 iwl_trans_txq_disable(mvm->trans, queue, false); 376 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 377 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 378 379 if (ret) 380 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 381 queue, ret); 382 return ret; 383 } 384 385 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 386 { 387 struct ieee80211_sta *sta; 388 struct iwl_mvm_sta *mvmsta; 389 unsigned long tid_bitmap; 390 unsigned long agg_tids = 0; 391 u8 sta_id; 392 int tid; 393 394 lockdep_assert_held(&mvm->mutex); 395 396 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 397 return -EINVAL; 398 399 sta_id = mvm->queue_info[queue].ra_sta_id; 400 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 401 402 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 403 lockdep_is_held(&mvm->mutex)); 404 405 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 406 return -EINVAL; 407 408 mvmsta = iwl_mvm_sta_from_mac80211(sta); 409 410 spin_lock_bh(&mvmsta->lock); 411 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 412 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 413 agg_tids |= BIT(tid); 414 } 415 spin_unlock_bh(&mvmsta->lock); 416 417 return agg_tids; 418 } 419 420 /* 421 * Remove a queue from a station's resources. 422 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 423 * doesn't disable the queue 424 */ 425 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 426 { 427 struct ieee80211_sta *sta; 428 struct iwl_mvm_sta *mvmsta; 429 unsigned long tid_bitmap; 430 unsigned long disable_agg_tids = 0; 431 u8 sta_id; 432 int tid; 433 434 lockdep_assert_held(&mvm->mutex); 435 436 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 437 return -EINVAL; 438 439 sta_id = mvm->queue_info[queue].ra_sta_id; 440 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 441 442 rcu_read_lock(); 443 444 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 445 446 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 447 rcu_read_unlock(); 448 return 0; 449 } 450 451 mvmsta = iwl_mvm_sta_from_mac80211(sta); 452 453 spin_lock_bh(&mvmsta->lock); 454 /* Unmap MAC queues and TIDs from this queue */ 455 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 456 struct iwl_mvm_txq *mvmtxq = 457 iwl_mvm_txq_from_tid(sta, tid); 458 459 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 460 disable_agg_tids |= BIT(tid); 461 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 462 463 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 464 } 465 466 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 467 spin_unlock_bh(&mvmsta->lock); 468 469 rcu_read_unlock(); 470 471 /* 472 * The TX path may have been using this TXQ_ID from the tid_data, 473 * so make sure it's no longer running so that we can safely reuse 474 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 475 * above, but nothing guarantees we've stopped using them. Thus, 476 * without this, we could get to iwl_mvm_disable_txq() and remove 477 * the queue while still sending frames to it. 478 */ 479 synchronize_net(); 480 481 return disable_agg_tids; 482 } 483 484 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 485 struct ieee80211_sta *old_sta, 486 u8 new_sta_id) 487 { 488 struct iwl_mvm_sta *mvmsta; 489 u8 sta_id, tid; 490 unsigned long disable_agg_tids = 0; 491 bool same_sta; 492 u16 queue_tmp = queue; 493 int ret; 494 495 lockdep_assert_held(&mvm->mutex); 496 497 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 498 return -EINVAL; 499 500 sta_id = mvm->queue_info[queue].ra_sta_id; 501 tid = mvm->queue_info[queue].txq_tid; 502 503 same_sta = sta_id == new_sta_id; 504 505 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 506 if (WARN_ON(!mvmsta)) 507 return -EINVAL; 508 509 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 510 /* Disable the queue */ 511 if (disable_agg_tids) 512 iwl_mvm_invalidate_sta_queue(mvm, queue, 513 disable_agg_tids, false); 514 515 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid, 0); 516 if (ret) { 517 IWL_ERR(mvm, 518 "Failed to free inactive queue %d (ret=%d)\n", 519 queue, ret); 520 521 return ret; 522 } 523 524 /* If TXQ is allocated to another STA, update removal in FW */ 525 if (!same_sta) 526 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 527 528 return 0; 529 } 530 531 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 532 unsigned long tfd_queue_mask, u8 ac) 533 { 534 int queue = 0; 535 u8 ac_to_queue[IEEE80211_NUM_ACS]; 536 int i; 537 538 /* 539 * This protects us against grabbing a queue that's being reconfigured 540 * by the inactivity checker. 541 */ 542 lockdep_assert_held(&mvm->mutex); 543 544 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 545 return -EINVAL; 546 547 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 548 549 /* See what ACs the existing queues for this STA have */ 550 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 551 /* Only DATA queues can be shared */ 552 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 553 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 554 continue; 555 556 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 557 } 558 559 /* 560 * The queue to share is chosen only from DATA queues as follows (in 561 * descending priority): 562 * 1. An AC_BE queue 563 * 2. Same AC queue 564 * 3. Highest AC queue that is lower than new AC 565 * 4. Any existing AC (there always is at least 1 DATA queue) 566 */ 567 568 /* Priority 1: An AC_BE queue */ 569 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 570 queue = ac_to_queue[IEEE80211_AC_BE]; 571 /* Priority 2: Same AC queue */ 572 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 573 queue = ac_to_queue[ac]; 574 /* Priority 3a: If new AC is VO and VI exists - use VI */ 575 else if (ac == IEEE80211_AC_VO && 576 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 577 queue = ac_to_queue[IEEE80211_AC_VI]; 578 /* Priority 3b: No BE so only AC less than the new one is BK */ 579 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 580 queue = ac_to_queue[IEEE80211_AC_BK]; 581 /* Priority 4a: No BE nor BK - use VI if exists */ 582 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 583 queue = ac_to_queue[IEEE80211_AC_VI]; 584 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 585 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 586 queue = ac_to_queue[IEEE80211_AC_VO]; 587 588 /* Make sure queue found (or not) is legal */ 589 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 590 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 591 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 592 IWL_ERR(mvm, "No DATA queues available to share\n"); 593 return -ENOSPC; 594 } 595 596 return queue; 597 } 598 599 /* 600 * If a given queue has a higher AC than the TID stream that is being compared 601 * to, the queue needs to be redirected to the lower AC. This function does that 602 * in such a case, otherwise - if no redirection required - it does nothing, 603 * unless the %force param is true. 604 */ 605 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 606 int ac, int ssn, unsigned int wdg_timeout, 607 bool force, struct iwl_mvm_txq *txq) 608 { 609 struct iwl_scd_txq_cfg_cmd cmd = { 610 .scd_queue = queue, 611 .action = SCD_CFG_DISABLE_QUEUE, 612 }; 613 bool shared_queue; 614 int ret; 615 616 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 617 return -EINVAL; 618 619 /* 620 * If the AC is lower than current one - FIFO needs to be redirected to 621 * the lowest one of the streams in the queue. Check if this is needed 622 * here. 623 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 624 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 625 * we need to check if the numerical value of X is LARGER than of Y. 626 */ 627 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 628 IWL_DEBUG_TX_QUEUES(mvm, 629 "No redirection needed on TXQ #%d\n", 630 queue); 631 return 0; 632 } 633 634 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 635 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 636 cmd.tid = mvm->queue_info[queue].txq_tid; 637 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 638 639 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 640 queue, iwl_mvm_ac_to_tx_fifo[ac]); 641 642 /* Stop the queue and wait for it to empty */ 643 txq->stopped = true; 644 645 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 646 if (ret) { 647 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 648 queue); 649 ret = -EIO; 650 goto out; 651 } 652 653 /* Before redirecting the queue we need to de-activate it */ 654 iwl_trans_txq_disable(mvm->trans, queue, false); 655 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 656 if (ret) 657 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 658 ret); 659 660 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 661 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 662 663 /* Update the TID "owner" of the queue */ 664 mvm->queue_info[queue].txq_tid = tid; 665 666 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 667 668 /* Redirect to lower AC */ 669 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 670 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 671 672 /* Update AC marking of the queue */ 673 mvm->queue_info[queue].mac80211_ac = ac; 674 675 /* 676 * Mark queue as shared in transport if shared 677 * Note this has to be done after queue enablement because enablement 678 * can also set this value, and there is no indication there to shared 679 * queues 680 */ 681 if (shared_queue) 682 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 683 684 out: 685 /* Continue using the queue */ 686 txq->stopped = false; 687 688 return ret; 689 } 690 691 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 692 u8 minq, u8 maxq) 693 { 694 int i; 695 696 lockdep_assert_held(&mvm->mutex); 697 698 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 699 "max queue %d >= num_of_queues (%d)", maxq, 700 mvm->trans->trans_cfg->base_params->num_of_queues)) 701 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 702 703 /* This should not be hit with new TX path */ 704 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 705 return -ENOSPC; 706 707 /* Start by looking for a free queue */ 708 for (i = minq; i <= maxq; i++) 709 if (mvm->queue_info[i].tid_bitmap == 0 && 710 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 711 return i; 712 713 return -ENOSPC; 714 } 715 716 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 717 u8 sta_id, u8 tid, unsigned int timeout) 718 { 719 int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, 720 mvm->trans->cfg->min_256_ba_txq_size); 721 722 if (tid == IWL_MAX_TID_COUNT) { 723 tid = IWL_MGMT_TID; 724 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 725 mvm->trans->cfg->min_txq_size); 726 } 727 728 do { 729 __le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); 730 731 queue = iwl_trans_txq_alloc(mvm->trans, enable, 732 sta_id, tid, SCD_QUEUE_CFG, 733 size, timeout); 734 735 if (queue < 0) 736 IWL_DEBUG_TX_QUEUES(mvm, 737 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 738 size, sta_id, tid, queue); 739 size /= 2; 740 } while (queue < 0 && size >= 16); 741 742 if (queue < 0) 743 return queue; 744 745 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 746 queue, sta_id, tid); 747 748 return queue; 749 } 750 751 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 752 struct ieee80211_sta *sta, u8 ac, 753 int tid) 754 { 755 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 756 struct iwl_mvm_txq *mvmtxq = 757 iwl_mvm_txq_from_tid(sta, tid); 758 unsigned int wdg_timeout = 759 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 760 int queue = -1; 761 762 lockdep_assert_held(&mvm->mutex); 763 764 IWL_DEBUG_TX_QUEUES(mvm, 765 "Allocating queue for sta %d on tid %d\n", 766 mvmsta->sta_id, tid); 767 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 768 if (queue < 0) 769 return queue; 770 771 mvmtxq->txq_id = queue; 772 mvm->tvqm_info[queue].txq_tid = tid; 773 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 774 775 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 776 777 spin_lock_bh(&mvmsta->lock); 778 mvmsta->tid_data[tid].txq_id = queue; 779 spin_unlock_bh(&mvmsta->lock); 780 781 return 0; 782 } 783 784 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 785 struct ieee80211_sta *sta, 786 int queue, u8 sta_id, u8 tid) 787 { 788 bool enable_queue = true; 789 790 /* Make sure this TID isn't already enabled */ 791 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 792 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 793 queue, tid); 794 return false; 795 } 796 797 /* Update mappings and refcounts */ 798 if (mvm->queue_info[queue].tid_bitmap) 799 enable_queue = false; 800 801 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 802 mvm->queue_info[queue].ra_sta_id = sta_id; 803 804 if (enable_queue) { 805 if (tid != IWL_MAX_TID_COUNT) 806 mvm->queue_info[queue].mac80211_ac = 807 tid_to_mac80211_ac[tid]; 808 else 809 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 810 811 mvm->queue_info[queue].txq_tid = tid; 812 } 813 814 if (sta) { 815 struct iwl_mvm_txq *mvmtxq = 816 iwl_mvm_txq_from_tid(sta, tid); 817 818 mvmtxq->txq_id = queue; 819 } 820 821 IWL_DEBUG_TX_QUEUES(mvm, 822 "Enabling TXQ #%d tids=0x%x\n", 823 queue, mvm->queue_info[queue].tid_bitmap); 824 825 return enable_queue; 826 } 827 828 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 829 int queue, u16 ssn, 830 const struct iwl_trans_txq_scd_cfg *cfg, 831 unsigned int wdg_timeout) 832 { 833 struct iwl_scd_txq_cfg_cmd cmd = { 834 .scd_queue = queue, 835 .action = SCD_CFG_ENABLE_QUEUE, 836 .window = cfg->frame_limit, 837 .sta_id = cfg->sta_id, 838 .ssn = cpu_to_le16(ssn), 839 .tx_fifo = cfg->fifo, 840 .aggregate = cfg->aggregate, 841 .tid = cfg->tid, 842 }; 843 bool inc_ssn; 844 845 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 846 return false; 847 848 /* Send the enabling command if we need to */ 849 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 850 return false; 851 852 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 853 NULL, wdg_timeout); 854 if (inc_ssn) 855 le16_add_cpu(&cmd.ssn, 1); 856 857 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 858 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 859 860 return inc_ssn; 861 } 862 863 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 864 { 865 struct iwl_scd_txq_cfg_cmd cmd = { 866 .scd_queue = queue, 867 .action = SCD_CFG_UPDATE_QUEUE_TID, 868 }; 869 int tid; 870 unsigned long tid_bitmap; 871 int ret; 872 873 lockdep_assert_held(&mvm->mutex); 874 875 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 876 return; 877 878 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 879 880 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 881 return; 882 883 /* Find any TID for queue */ 884 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 885 cmd.tid = tid; 886 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 887 888 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 889 if (ret) { 890 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 891 queue, ret); 892 return; 893 } 894 895 mvm->queue_info[queue].txq_tid = tid; 896 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 897 queue, tid); 898 } 899 900 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 901 { 902 struct ieee80211_sta *sta; 903 struct iwl_mvm_sta *mvmsta; 904 u8 sta_id; 905 int tid = -1; 906 unsigned long tid_bitmap; 907 unsigned int wdg_timeout; 908 int ssn; 909 int ret = true; 910 911 /* queue sharing is disabled on new TX path */ 912 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 913 return; 914 915 lockdep_assert_held(&mvm->mutex); 916 917 sta_id = mvm->queue_info[queue].ra_sta_id; 918 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 919 920 /* Find TID for queue, and make sure it is the only one on the queue */ 921 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 922 if (tid_bitmap != BIT(tid)) { 923 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 924 queue, tid_bitmap); 925 return; 926 } 927 928 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 929 tid); 930 931 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 932 lockdep_is_held(&mvm->mutex)); 933 934 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 935 return; 936 937 mvmsta = iwl_mvm_sta_from_mac80211(sta); 938 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 939 940 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 941 942 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 943 tid_to_mac80211_ac[tid], ssn, 944 wdg_timeout, true, 945 iwl_mvm_txq_from_tid(sta, tid)); 946 if (ret) { 947 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 948 return; 949 } 950 951 /* If aggs should be turned back on - do it */ 952 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 953 struct iwl_mvm_add_sta_cmd cmd = {0}; 954 955 mvmsta->tid_disable_agg &= ~BIT(tid); 956 957 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 958 cmd.sta_id = mvmsta->sta_id; 959 cmd.add_modify = STA_MODE_MODIFY; 960 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 961 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 962 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 963 964 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 965 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 966 if (!ret) { 967 IWL_DEBUG_TX_QUEUES(mvm, 968 "TXQ #%d is now aggregated again\n", 969 queue); 970 971 /* Mark queue intenally as aggregating again */ 972 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 973 } 974 } 975 976 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 977 } 978 979 /* 980 * Remove inactive TIDs of a given queue. 981 * If all queue TIDs are inactive - mark the queue as inactive 982 * If only some the queue TIDs are inactive - unmap them from the queue 983 * 984 * Returns %true if all TIDs were removed and the queue could be reused. 985 */ 986 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 987 struct iwl_mvm_sta *mvmsta, int queue, 988 unsigned long tid_bitmap, 989 unsigned long *unshare_queues, 990 unsigned long *changetid_queues) 991 { 992 int tid; 993 994 lockdep_assert_held(&mvmsta->lock); 995 lockdep_assert_held(&mvm->mutex); 996 997 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 998 return false; 999 1000 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1001 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1002 /* If some TFDs are still queued - don't mark TID as inactive */ 1003 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1004 tid_bitmap &= ~BIT(tid); 1005 1006 /* Don't mark as inactive any TID that has an active BA */ 1007 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1008 tid_bitmap &= ~BIT(tid); 1009 } 1010 1011 /* If all TIDs in the queue are inactive - return it can be reused */ 1012 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1013 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1014 return true; 1015 } 1016 1017 /* 1018 * If we are here, this is a shared queue and not all TIDs timed-out. 1019 * Remove the ones that did. 1020 */ 1021 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1022 u16 tid_bitmap; 1023 1024 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1025 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1026 1027 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1028 1029 /* 1030 * We need to take into account a situation in which a TXQ was 1031 * allocated to TID x, and then turned shared by adding TIDs y 1032 * and z. If TID x becomes inactive and is removed from the TXQ, 1033 * ownership must be given to one of the remaining TIDs. 1034 * This is mainly because if TID x continues - a new queue can't 1035 * be allocated for it as long as it is an owner of another TXQ. 1036 * 1037 * Mark this queue in the right bitmap, we'll send the command 1038 * to the firmware later. 1039 */ 1040 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1041 set_bit(queue, changetid_queues); 1042 1043 IWL_DEBUG_TX_QUEUES(mvm, 1044 "Removing inactive TID %d from shared Q:%d\n", 1045 tid, queue); 1046 } 1047 1048 IWL_DEBUG_TX_QUEUES(mvm, 1049 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1050 mvm->queue_info[queue].tid_bitmap); 1051 1052 /* 1053 * There may be different TIDs with the same mac queues, so make 1054 * sure all TIDs have existing corresponding mac queues enabled 1055 */ 1056 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1057 1058 /* If the queue is marked as shared - "unshare" it */ 1059 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1060 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1061 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1062 queue); 1063 set_bit(queue, unshare_queues); 1064 } 1065 1066 return false; 1067 } 1068 1069 /* 1070 * Check for inactivity - this includes checking if any queue 1071 * can be unshared and finding one (and only one) that can be 1072 * reused. 1073 * This function is also invoked as a sort of clean-up task, 1074 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1075 * 1076 * Returns the queue number, or -ENOSPC. 1077 */ 1078 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1079 { 1080 unsigned long now = jiffies; 1081 unsigned long unshare_queues = 0; 1082 unsigned long changetid_queues = 0; 1083 int i, ret, free_queue = -ENOSPC; 1084 struct ieee80211_sta *queue_owner = NULL; 1085 1086 lockdep_assert_held(&mvm->mutex); 1087 1088 if (iwl_mvm_has_new_tx_api(mvm)) 1089 return -ENOSPC; 1090 1091 rcu_read_lock(); 1092 1093 /* we skip the CMD queue below by starting at 1 */ 1094 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1095 1096 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1097 struct ieee80211_sta *sta; 1098 struct iwl_mvm_sta *mvmsta; 1099 u8 sta_id; 1100 int tid; 1101 unsigned long inactive_tid_bitmap = 0; 1102 unsigned long queue_tid_bitmap; 1103 1104 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1105 if (!queue_tid_bitmap) 1106 continue; 1107 1108 /* If TXQ isn't in active use anyway - nothing to do here... */ 1109 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1110 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1111 continue; 1112 1113 /* Check to see if there are inactive TIDs on this queue */ 1114 for_each_set_bit(tid, &queue_tid_bitmap, 1115 IWL_MAX_TID_COUNT + 1) { 1116 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1117 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1118 continue; 1119 1120 inactive_tid_bitmap |= BIT(tid); 1121 } 1122 1123 /* If all TIDs are active - finish check on this queue */ 1124 if (!inactive_tid_bitmap) 1125 continue; 1126 1127 /* 1128 * If we are here - the queue hadn't been served recently and is 1129 * in use 1130 */ 1131 1132 sta_id = mvm->queue_info[i].ra_sta_id; 1133 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1134 1135 /* 1136 * If the STA doesn't exist anymore, it isn't an error. It could 1137 * be that it was removed since getting the queues, and in this 1138 * case it should've inactivated its queues anyway. 1139 */ 1140 if (IS_ERR_OR_NULL(sta)) 1141 continue; 1142 1143 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1144 1145 spin_lock_bh(&mvmsta->lock); 1146 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1147 inactive_tid_bitmap, 1148 &unshare_queues, 1149 &changetid_queues); 1150 if (ret && free_queue < 0) { 1151 queue_owner = sta; 1152 free_queue = i; 1153 } 1154 /* only unlock sta lock - we still need the queue info lock */ 1155 spin_unlock_bh(&mvmsta->lock); 1156 } 1157 1158 1159 /* Reconfigure queues requiring reconfiguation */ 1160 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1161 iwl_mvm_unshare_queue(mvm, i); 1162 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1163 iwl_mvm_change_queue_tid(mvm, i); 1164 1165 rcu_read_unlock(); 1166 1167 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1168 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1169 alloc_for_sta); 1170 if (ret) 1171 return ret; 1172 } 1173 1174 return free_queue; 1175 } 1176 1177 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1178 struct ieee80211_sta *sta, u8 ac, int tid) 1179 { 1180 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1181 struct iwl_trans_txq_scd_cfg cfg = { 1182 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1183 .sta_id = mvmsta->sta_id, 1184 .tid = tid, 1185 .frame_limit = IWL_FRAME_LIMIT, 1186 }; 1187 unsigned int wdg_timeout = 1188 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1189 int queue = -1; 1190 u16 queue_tmp; 1191 unsigned long disable_agg_tids = 0; 1192 enum iwl_mvm_agg_state queue_state; 1193 bool shared_queue = false, inc_ssn; 1194 int ssn; 1195 unsigned long tfd_queue_mask; 1196 int ret; 1197 1198 lockdep_assert_held(&mvm->mutex); 1199 1200 if (iwl_mvm_has_new_tx_api(mvm)) 1201 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1202 1203 spin_lock_bh(&mvmsta->lock); 1204 tfd_queue_mask = mvmsta->tfd_queue_msk; 1205 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1206 spin_unlock_bh(&mvmsta->lock); 1207 1208 if (tid == IWL_MAX_TID_COUNT) { 1209 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1210 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1211 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1212 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1213 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1214 queue); 1215 1216 /* If no such queue is found, we'll use a DATA queue instead */ 1217 } 1218 1219 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1220 (mvm->queue_info[mvmsta->reserved_queue].status == 1221 IWL_MVM_QUEUE_RESERVED)) { 1222 queue = mvmsta->reserved_queue; 1223 mvm->queue_info[queue].reserved = true; 1224 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1225 } 1226 1227 if (queue < 0) 1228 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1229 IWL_MVM_DQA_MIN_DATA_QUEUE, 1230 IWL_MVM_DQA_MAX_DATA_QUEUE); 1231 if (queue < 0) { 1232 /* try harder - perhaps kill an inactive queue */ 1233 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1234 } 1235 1236 /* No free queue - we'll have to share */ 1237 if (queue <= 0) { 1238 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1239 if (queue > 0) { 1240 shared_queue = true; 1241 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1242 } 1243 } 1244 1245 /* 1246 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1247 * to make sure no one else takes it. 1248 * This will allow avoiding re-acquiring the lock at the end of the 1249 * configuration. On error we'll mark it back as free. 1250 */ 1251 if (queue > 0 && !shared_queue) 1252 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1253 1254 /* This shouldn't happen - out of queues */ 1255 if (WARN_ON(queue <= 0)) { 1256 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1257 tid, cfg.sta_id); 1258 return queue; 1259 } 1260 1261 /* 1262 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1263 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1264 * as aggregatable. 1265 * Mark all DATA queues as allowing to be aggregated at some point 1266 */ 1267 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1268 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1269 1270 IWL_DEBUG_TX_QUEUES(mvm, 1271 "Allocating %squeue #%d to sta %d on tid %d\n", 1272 shared_queue ? "shared " : "", queue, 1273 mvmsta->sta_id, tid); 1274 1275 if (shared_queue) { 1276 /* Disable any open aggs on this queue */ 1277 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1278 1279 if (disable_agg_tids) { 1280 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1281 queue); 1282 iwl_mvm_invalidate_sta_queue(mvm, queue, 1283 disable_agg_tids, false); 1284 } 1285 } 1286 1287 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1288 1289 /* 1290 * Mark queue as shared in transport if shared 1291 * Note this has to be done after queue enablement because enablement 1292 * can also set this value, and there is no indication there to shared 1293 * queues 1294 */ 1295 if (shared_queue) 1296 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1297 1298 spin_lock_bh(&mvmsta->lock); 1299 /* 1300 * This looks racy, but it is not. We have only one packet for 1301 * this ra/tid in our Tx path since we stop the Qdisc when we 1302 * need to allocate a new TFD queue. 1303 */ 1304 if (inc_ssn) { 1305 mvmsta->tid_data[tid].seq_number += 0x10; 1306 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1307 } 1308 mvmsta->tid_data[tid].txq_id = queue; 1309 mvmsta->tfd_queue_msk |= BIT(queue); 1310 queue_state = mvmsta->tid_data[tid].state; 1311 1312 if (mvmsta->reserved_queue == queue) 1313 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1314 spin_unlock_bh(&mvmsta->lock); 1315 1316 if (!shared_queue) { 1317 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1318 if (ret) 1319 goto out_err; 1320 1321 /* If we need to re-enable aggregations... */ 1322 if (queue_state == IWL_AGG_ON) { 1323 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1324 if (ret) 1325 goto out_err; 1326 } 1327 } else { 1328 /* Redirect queue, if needed */ 1329 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1330 wdg_timeout, false, 1331 iwl_mvm_txq_from_tid(sta, tid)); 1332 if (ret) 1333 goto out_err; 1334 } 1335 1336 return 0; 1337 1338 out_err: 1339 queue_tmp = queue; 1340 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid, 0); 1341 1342 return ret; 1343 } 1344 1345 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1346 { 1347 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1348 add_stream_wk); 1349 1350 mutex_lock(&mvm->mutex); 1351 1352 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1353 1354 while (!list_empty(&mvm->add_stream_txqs)) { 1355 struct iwl_mvm_txq *mvmtxq; 1356 struct ieee80211_txq *txq; 1357 u8 tid; 1358 1359 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1360 struct iwl_mvm_txq, list); 1361 1362 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1363 drv_priv); 1364 tid = txq->tid; 1365 if (tid == IEEE80211_NUM_TIDS) 1366 tid = IWL_MAX_TID_COUNT; 1367 1368 /* 1369 * We can't really do much here, but if this fails we can't 1370 * transmit anyway - so just don't transmit the frame etc. 1371 * and let them back up ... we've tried our best to allocate 1372 * a queue in the function itself. 1373 */ 1374 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1375 list_del_init(&mvmtxq->list); 1376 continue; 1377 } 1378 1379 list_del_init(&mvmtxq->list); 1380 local_bh_disable(); 1381 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1382 local_bh_enable(); 1383 } 1384 1385 mutex_unlock(&mvm->mutex); 1386 } 1387 1388 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1389 struct ieee80211_sta *sta, 1390 enum nl80211_iftype vif_type) 1391 { 1392 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1393 int queue; 1394 1395 /* queue reserving is disabled on new TX path */ 1396 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1397 return 0; 1398 1399 /* run the general cleanup/unsharing of queues */ 1400 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1401 1402 /* Make sure we have free resources for this STA */ 1403 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1404 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1405 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1406 IWL_MVM_QUEUE_FREE)) 1407 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1408 else 1409 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1410 IWL_MVM_DQA_MIN_DATA_QUEUE, 1411 IWL_MVM_DQA_MAX_DATA_QUEUE); 1412 if (queue < 0) { 1413 /* try again - this time kick out a queue if needed */ 1414 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1415 if (queue < 0) { 1416 IWL_ERR(mvm, "No available queues for new station\n"); 1417 return -ENOSPC; 1418 } 1419 } 1420 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1421 1422 mvmsta->reserved_queue = queue; 1423 1424 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1425 queue, mvmsta->sta_id); 1426 1427 return 0; 1428 } 1429 1430 /* 1431 * In DQA mode, after a HW restart the queues should be allocated as before, in 1432 * order to avoid race conditions when there are shared queues. This function 1433 * does the re-mapping and queue allocation. 1434 * 1435 * Note that re-enabling aggregations isn't done in this function. 1436 */ 1437 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1438 struct ieee80211_sta *sta) 1439 { 1440 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1441 unsigned int wdg = 1442 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1443 int i; 1444 struct iwl_trans_txq_scd_cfg cfg = { 1445 .sta_id = mvm_sta->sta_id, 1446 .frame_limit = IWL_FRAME_LIMIT, 1447 }; 1448 1449 /* Make sure reserved queue is still marked as such (if allocated) */ 1450 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1451 mvm->queue_info[mvm_sta->reserved_queue].status = 1452 IWL_MVM_QUEUE_RESERVED; 1453 1454 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1455 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1456 int txq_id = tid_data->txq_id; 1457 int ac; 1458 1459 if (txq_id == IWL_MVM_INVALID_QUEUE) 1460 continue; 1461 1462 ac = tid_to_mac80211_ac[i]; 1463 1464 if (iwl_mvm_has_new_tx_api(mvm)) { 1465 IWL_DEBUG_TX_QUEUES(mvm, 1466 "Re-mapping sta %d tid %d\n", 1467 mvm_sta->sta_id, i); 1468 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1469 i, wdg); 1470 /* 1471 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1472 * to try again later, we have no other good way of 1473 * failing here 1474 */ 1475 if (txq_id < 0) 1476 txq_id = IWL_MVM_INVALID_QUEUE; 1477 tid_data->txq_id = txq_id; 1478 1479 /* 1480 * Since we don't set the seq number after reset, and HW 1481 * sets it now, FW reset will cause the seq num to start 1482 * at 0 again, so driver will need to update it 1483 * internally as well, so it keeps in sync with real val 1484 */ 1485 tid_data->seq_number = 0; 1486 } else { 1487 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1488 1489 cfg.tid = i; 1490 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1491 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1492 txq_id == 1493 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1494 1495 IWL_DEBUG_TX_QUEUES(mvm, 1496 "Re-mapping sta %d tid %d to queue %d\n", 1497 mvm_sta->sta_id, i, txq_id); 1498 1499 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1500 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1501 } 1502 } 1503 } 1504 1505 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1506 struct iwl_mvm_int_sta *sta, 1507 const u8 *addr, 1508 u16 mac_id, u16 color) 1509 { 1510 struct iwl_mvm_add_sta_cmd cmd; 1511 int ret; 1512 u32 status = ADD_STA_SUCCESS; 1513 1514 lockdep_assert_held(&mvm->mutex); 1515 1516 memset(&cmd, 0, sizeof(cmd)); 1517 cmd.sta_id = sta->sta_id; 1518 1519 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 1520 0) >= 12 && 1521 sta->type == IWL_STA_AUX_ACTIVITY) 1522 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1523 else 1524 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1525 color)); 1526 1527 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1528 cmd.station_type = sta->type; 1529 1530 if (!iwl_mvm_has_new_tx_api(mvm)) 1531 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1532 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1533 1534 if (addr) 1535 memcpy(cmd.addr, addr, ETH_ALEN); 1536 1537 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1538 iwl_mvm_add_sta_cmd_size(mvm), 1539 &cmd, &status); 1540 if (ret) 1541 return ret; 1542 1543 switch (status & IWL_ADD_STA_STATUS_MASK) { 1544 case ADD_STA_SUCCESS: 1545 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1546 return 0; 1547 default: 1548 ret = -EIO; 1549 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1550 status); 1551 break; 1552 } 1553 return ret; 1554 } 1555 1556 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1557 struct ieee80211_vif *vif, 1558 struct ieee80211_sta *sta) 1559 { 1560 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1561 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1562 struct iwl_mvm_rxq_dup_data *dup_data; 1563 int i, ret, sta_id; 1564 bool sta_update = false; 1565 unsigned int sta_flags = 0; 1566 1567 lockdep_assert_held(&mvm->mutex); 1568 1569 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1570 sta_id = iwl_mvm_find_free_sta_id(mvm, 1571 ieee80211_vif_type_p2p(vif)); 1572 else 1573 sta_id = mvm_sta->sta_id; 1574 1575 if (sta_id == IWL_MVM_INVALID_STA) 1576 return -ENOSPC; 1577 1578 spin_lock_init(&mvm_sta->lock); 1579 1580 /* if this is a HW restart re-alloc existing queues */ 1581 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1582 struct iwl_mvm_int_sta tmp_sta = { 1583 .sta_id = sta_id, 1584 .type = mvm_sta->sta_type, 1585 }; 1586 1587 /* 1588 * First add an empty station since allocating 1589 * a queue requires a valid station 1590 */ 1591 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1592 mvmvif->id, mvmvif->color); 1593 if (ret) 1594 goto err; 1595 1596 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1597 sta_update = true; 1598 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1599 goto update_fw; 1600 } 1601 1602 mvm_sta->sta_id = sta_id; 1603 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1604 mvmvif->color); 1605 mvm_sta->vif = vif; 1606 if (!mvm->trans->trans_cfg->gen2) 1607 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1608 else 1609 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1610 mvm_sta->tx_protection = 0; 1611 mvm_sta->tt_tx_protection = false; 1612 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1613 1614 /* HW restart, don't assume the memory has been zeroed */ 1615 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1616 mvm_sta->tfd_queue_msk = 0; 1617 1618 /* for HW restart - reset everything but the sequence number */ 1619 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1620 u16 seq = mvm_sta->tid_data[i].seq_number; 1621 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1622 mvm_sta->tid_data[i].seq_number = seq; 1623 1624 /* 1625 * Mark all queues for this STA as unallocated and defer TX 1626 * frames until the queue is allocated 1627 */ 1628 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1629 } 1630 1631 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1632 struct iwl_mvm_txq *mvmtxq = 1633 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1634 1635 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1636 INIT_LIST_HEAD(&mvmtxq->list); 1637 atomic_set(&mvmtxq->tx_request, 0); 1638 } 1639 1640 mvm_sta->agg_tids = 0; 1641 1642 if (iwl_mvm_has_new_rx_api(mvm) && 1643 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1644 int q; 1645 1646 dup_data = kcalloc(mvm->trans->num_rx_queues, 1647 sizeof(*dup_data), GFP_KERNEL); 1648 if (!dup_data) 1649 return -ENOMEM; 1650 /* 1651 * Initialize all the last_seq values to 0xffff which can never 1652 * compare equal to the frame's seq_ctrl in the check in 1653 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1654 * number and fragmented packets don't reach that function. 1655 * 1656 * This thus allows receiving a packet with seqno 0 and the 1657 * retry bit set as the very first packet on a new TID. 1658 */ 1659 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1660 memset(dup_data[q].last_seq, 0xff, 1661 sizeof(dup_data[q].last_seq)); 1662 mvm_sta->dup_data = dup_data; 1663 } 1664 1665 if (!iwl_mvm_has_new_tx_api(mvm)) { 1666 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1667 ieee80211_vif_type_p2p(vif)); 1668 if (ret) 1669 goto err; 1670 } 1671 1672 /* 1673 * if rs is registered with mac80211, then "add station" will be handled 1674 * via the corresponding ops, otherwise need to notify rate scaling here 1675 */ 1676 if (iwl_mvm_has_tlc_offload(mvm)) 1677 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1678 else 1679 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1680 1681 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1682 1683 update_fw: 1684 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1685 if (ret) 1686 goto err; 1687 1688 if (vif->type == NL80211_IFTYPE_STATION) { 1689 if (!sta->tdls) { 1690 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1691 mvmvif->ap_sta_id = sta_id; 1692 } else { 1693 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1694 } 1695 } 1696 1697 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1698 1699 return 0; 1700 1701 err: 1702 return ret; 1703 } 1704 1705 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1706 bool drain) 1707 { 1708 struct iwl_mvm_add_sta_cmd cmd = {}; 1709 int ret; 1710 u32 status; 1711 1712 lockdep_assert_held(&mvm->mutex); 1713 1714 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1715 cmd.sta_id = mvmsta->sta_id; 1716 cmd.add_modify = STA_MODE_MODIFY; 1717 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1718 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1719 1720 status = ADD_STA_SUCCESS; 1721 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1722 iwl_mvm_add_sta_cmd_size(mvm), 1723 &cmd, &status); 1724 if (ret) 1725 return ret; 1726 1727 switch (status & IWL_ADD_STA_STATUS_MASK) { 1728 case ADD_STA_SUCCESS: 1729 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1730 mvmsta->sta_id); 1731 break; 1732 default: 1733 ret = -EIO; 1734 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1735 mvmsta->sta_id); 1736 break; 1737 } 1738 1739 return ret; 1740 } 1741 1742 /* 1743 * Remove a station from the FW table. Before sending the command to remove 1744 * the station validate that the station is indeed known to the driver (sanity 1745 * only). 1746 */ 1747 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1748 { 1749 struct ieee80211_sta *sta; 1750 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1751 .sta_id = sta_id, 1752 }; 1753 int ret; 1754 1755 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1756 lockdep_is_held(&mvm->mutex)); 1757 1758 /* Note: internal stations are marked as error values */ 1759 if (!sta) { 1760 IWL_ERR(mvm, "Invalid station id\n"); 1761 return -EINVAL; 1762 } 1763 1764 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1765 sizeof(rm_sta_cmd), &rm_sta_cmd); 1766 if (ret) { 1767 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1768 return ret; 1769 } 1770 1771 return 0; 1772 } 1773 1774 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1775 struct ieee80211_vif *vif, 1776 struct ieee80211_sta *sta) 1777 { 1778 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1779 int i; 1780 1781 lockdep_assert_held(&mvm->mutex); 1782 1783 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1784 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1785 continue; 1786 1787 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i, 1788 0); 1789 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1790 } 1791 1792 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1793 struct iwl_mvm_txq *mvmtxq = 1794 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1795 1796 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1797 } 1798 } 1799 1800 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1801 struct iwl_mvm_sta *mvm_sta) 1802 { 1803 int i; 1804 1805 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1806 u16 txq_id; 1807 int ret; 1808 1809 spin_lock_bh(&mvm_sta->lock); 1810 txq_id = mvm_sta->tid_data[i].txq_id; 1811 spin_unlock_bh(&mvm_sta->lock); 1812 1813 if (txq_id == IWL_MVM_INVALID_QUEUE) 1814 continue; 1815 1816 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1817 if (ret) 1818 return ret; 1819 } 1820 1821 return 0; 1822 } 1823 1824 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1825 struct ieee80211_vif *vif, 1826 struct ieee80211_sta *sta) 1827 { 1828 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1829 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1830 u8 sta_id = mvm_sta->sta_id; 1831 int ret; 1832 1833 lockdep_assert_held(&mvm->mutex); 1834 1835 if (iwl_mvm_has_new_rx_api(mvm)) 1836 kfree(mvm_sta->dup_data); 1837 1838 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1839 if (ret) 1840 return ret; 1841 1842 /* flush its queues here since we are freeing mvm_sta */ 1843 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1844 if (ret) 1845 return ret; 1846 if (iwl_mvm_has_new_tx_api(mvm)) { 1847 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1848 } else { 1849 u32 q_mask = mvm_sta->tfd_queue_msk; 1850 1851 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1852 q_mask); 1853 } 1854 if (ret) 1855 return ret; 1856 1857 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1858 1859 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1860 1861 /* If there is a TXQ still marked as reserved - free it */ 1862 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1863 u8 reserved_txq = mvm_sta->reserved_queue; 1864 enum iwl_mvm_queue_status *status; 1865 1866 /* 1867 * If no traffic has gone through the reserved TXQ - it 1868 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1869 * should be manually marked as free again 1870 */ 1871 status = &mvm->queue_info[reserved_txq].status; 1872 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1873 (*status != IWL_MVM_QUEUE_FREE), 1874 "sta_id %d reserved txq %d status %d", 1875 sta_id, reserved_txq, *status)) 1876 return -EINVAL; 1877 1878 *status = IWL_MVM_QUEUE_FREE; 1879 } 1880 1881 if (vif->type == NL80211_IFTYPE_STATION && 1882 mvmvif->ap_sta_id == sta_id) { 1883 /* if associated - we can't remove the AP STA now */ 1884 if (vif->bss_conf.assoc) 1885 return ret; 1886 1887 /* unassoc - go ahead - remove the AP STA now */ 1888 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1889 } 1890 1891 /* 1892 * This shouldn't happen - the TDLS channel switch should be canceled 1893 * before the STA is removed. 1894 */ 1895 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1896 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1897 cancel_delayed_work(&mvm->tdls_cs.dwork); 1898 } 1899 1900 /* 1901 * Make sure that the tx response code sees the station as -EBUSY and 1902 * calls the drain worker. 1903 */ 1904 spin_lock_bh(&mvm_sta->lock); 1905 spin_unlock_bh(&mvm_sta->lock); 1906 1907 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1908 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1909 1910 return ret; 1911 } 1912 1913 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1914 struct ieee80211_vif *vif, 1915 u8 sta_id) 1916 { 1917 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1918 1919 lockdep_assert_held(&mvm->mutex); 1920 1921 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1922 return ret; 1923 } 1924 1925 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1926 struct iwl_mvm_int_sta *sta, 1927 u32 qmask, enum nl80211_iftype iftype, 1928 enum iwl_sta_type type) 1929 { 1930 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1931 sta->sta_id == IWL_MVM_INVALID_STA) { 1932 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1933 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1934 return -ENOSPC; 1935 } 1936 1937 sta->tfd_queue_msk = qmask; 1938 sta->type = type; 1939 1940 /* put a non-NULL value so iterating over the stations won't stop */ 1941 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1942 return 0; 1943 } 1944 1945 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1946 { 1947 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1948 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1949 sta->sta_id = IWL_MVM_INVALID_STA; 1950 } 1951 1952 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 1953 u8 sta_id, u8 fifo) 1954 { 1955 unsigned int wdg_timeout = 1956 mvm->trans->trans_cfg->base_params->wd_timeout; 1957 struct iwl_trans_txq_scd_cfg cfg = { 1958 .fifo = fifo, 1959 .sta_id = sta_id, 1960 .tid = IWL_MAX_TID_COUNT, 1961 .aggregate = false, 1962 .frame_limit = IWL_FRAME_LIMIT, 1963 }; 1964 1965 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 1966 1967 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 1968 } 1969 1970 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 1971 { 1972 unsigned int wdg_timeout = 1973 mvm->trans->trans_cfg->base_params->wd_timeout; 1974 1975 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 1976 1977 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 1978 wdg_timeout); 1979 } 1980 1981 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 1982 int maccolor, u8 *addr, 1983 struct iwl_mvm_int_sta *sta, 1984 u16 *queue, int fifo) 1985 { 1986 int ret; 1987 1988 /* Map queue to fifo - needs to happen before adding station */ 1989 if (!iwl_mvm_has_new_tx_api(mvm)) 1990 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 1991 1992 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 1993 if (ret) { 1994 if (!iwl_mvm_has_new_tx_api(mvm)) 1995 iwl_mvm_disable_txq(mvm, NULL, queue, 1996 IWL_MAX_TID_COUNT, 0); 1997 return ret; 1998 } 1999 2000 /* 2001 * For 22000 firmware and on we cannot add queue to a station unknown 2002 * to firmware so enable queue here - after the station was added 2003 */ 2004 if (iwl_mvm_has_new_tx_api(mvm)) { 2005 int txq; 2006 2007 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2008 if (txq < 0) { 2009 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2010 return txq; 2011 } 2012 2013 *queue = txq; 2014 } 2015 2016 return 0; 2017 } 2018 2019 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2020 { 2021 int ret; 2022 2023 lockdep_assert_held(&mvm->mutex); 2024 2025 /* Allocate aux station and assign to it the aux queue */ 2026 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2027 NL80211_IFTYPE_UNSPECIFIED, 2028 IWL_STA_AUX_ACTIVITY); 2029 if (ret) 2030 return ret; 2031 2032 /* 2033 * In CDB NICs we need to specify which lmac to use for aux activity 2034 * using the mac_id argument place to send lmac_id to the function 2035 */ 2036 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2037 &mvm->aux_sta, &mvm->aux_queue, 2038 IWL_MVM_TX_FIFO_MCAST); 2039 if (ret) { 2040 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2041 return ret; 2042 } 2043 2044 return 0; 2045 } 2046 2047 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2048 { 2049 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2050 2051 lockdep_assert_held(&mvm->mutex); 2052 2053 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2054 NULL, &mvm->snif_sta, 2055 &mvm->snif_queue, 2056 IWL_MVM_TX_FIFO_BE); 2057 } 2058 2059 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2060 { 2061 int ret; 2062 2063 lockdep_assert_held(&mvm->mutex); 2064 2065 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2066 return -EINVAL; 2067 2068 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT, 0); 2069 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2070 if (ret) 2071 IWL_WARN(mvm, "Failed sending remove station\n"); 2072 2073 return ret; 2074 } 2075 2076 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2077 { 2078 int ret; 2079 2080 lockdep_assert_held(&mvm->mutex); 2081 2082 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2083 return -EINVAL; 2084 2085 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT, 0); 2086 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2087 if (ret) 2088 IWL_WARN(mvm, "Failed sending remove station\n"); 2089 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2090 2091 return ret; 2092 } 2093 2094 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2095 { 2096 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2097 } 2098 2099 /* 2100 * Send the add station command for the vif's broadcast station. 2101 * Assumes that the station was already allocated. 2102 * 2103 * @mvm: the mvm component 2104 * @vif: the interface to which the broadcast station is added 2105 * @bsta: the broadcast station to add. 2106 */ 2107 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2108 { 2109 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2110 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2111 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2112 const u8 *baddr = _baddr; 2113 int queue; 2114 int ret; 2115 unsigned int wdg_timeout = 2116 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2117 struct iwl_trans_txq_scd_cfg cfg = { 2118 .fifo = IWL_MVM_TX_FIFO_VO, 2119 .sta_id = mvmvif->bcast_sta.sta_id, 2120 .tid = IWL_MAX_TID_COUNT, 2121 .aggregate = false, 2122 .frame_limit = IWL_FRAME_LIMIT, 2123 }; 2124 2125 lockdep_assert_held(&mvm->mutex); 2126 2127 if (!iwl_mvm_has_new_tx_api(mvm)) { 2128 if (vif->type == NL80211_IFTYPE_AP || 2129 vif->type == NL80211_IFTYPE_ADHOC) { 2130 queue = mvm->probe_queue; 2131 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2132 queue = mvm->p2p_dev_queue; 2133 } else { 2134 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2135 return -EINVAL; 2136 } 2137 2138 bsta->tfd_queue_msk |= BIT(queue); 2139 2140 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2141 } 2142 2143 if (vif->type == NL80211_IFTYPE_ADHOC) 2144 baddr = vif->bss_conf.bssid; 2145 2146 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2147 return -ENOSPC; 2148 2149 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2150 mvmvif->id, mvmvif->color); 2151 if (ret) 2152 return ret; 2153 2154 /* 2155 * For 22000 firmware and on we cannot add queue to a station unknown 2156 * to firmware so enable queue here - after the station was added 2157 */ 2158 if (iwl_mvm_has_new_tx_api(mvm)) { 2159 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2160 IWL_MAX_TID_COUNT, 2161 wdg_timeout); 2162 if (queue < 0) { 2163 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2164 return queue; 2165 } 2166 2167 if (vif->type == NL80211_IFTYPE_AP || 2168 vif->type == NL80211_IFTYPE_ADHOC) 2169 mvm->probe_queue = queue; 2170 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2171 mvm->p2p_dev_queue = queue; 2172 } 2173 2174 return 0; 2175 } 2176 2177 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2178 struct ieee80211_vif *vif) 2179 { 2180 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2181 u16 *queueptr, queue; 2182 2183 lockdep_assert_held(&mvm->mutex); 2184 2185 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2186 2187 switch (vif->type) { 2188 case NL80211_IFTYPE_AP: 2189 case NL80211_IFTYPE_ADHOC: 2190 queueptr = &mvm->probe_queue; 2191 break; 2192 case NL80211_IFTYPE_P2P_DEVICE: 2193 queueptr = &mvm->p2p_dev_queue; 2194 break; 2195 default: 2196 WARN(1, "Can't free bcast queue on vif type %d\n", 2197 vif->type); 2198 return; 2199 } 2200 2201 queue = *queueptr; 2202 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT, 0); 2203 if (iwl_mvm_has_new_tx_api(mvm)) 2204 return; 2205 2206 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2207 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2208 } 2209 2210 /* Send the FW a request to remove the station from it's internal data 2211 * structures, but DO NOT remove the entry from the local data structures. */ 2212 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2213 { 2214 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2215 int ret; 2216 2217 lockdep_assert_held(&mvm->mutex); 2218 2219 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2220 2221 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2222 if (ret) 2223 IWL_WARN(mvm, "Failed sending remove station\n"); 2224 return ret; 2225 } 2226 2227 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2228 { 2229 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2230 2231 lockdep_assert_held(&mvm->mutex); 2232 2233 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2234 ieee80211_vif_type_p2p(vif), 2235 IWL_STA_GENERAL_PURPOSE); 2236 } 2237 2238 /* Allocate a new station entry for the broadcast station to the given vif, 2239 * and send it to the FW. 2240 * Note that each P2P mac should have its own broadcast station. 2241 * 2242 * @mvm: the mvm component 2243 * @vif: the interface to which the broadcast station is added 2244 * @bsta: the broadcast station to add. */ 2245 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2246 { 2247 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2248 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2249 int ret; 2250 2251 lockdep_assert_held(&mvm->mutex); 2252 2253 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2254 if (ret) 2255 return ret; 2256 2257 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2258 2259 if (ret) 2260 iwl_mvm_dealloc_int_sta(mvm, bsta); 2261 2262 return ret; 2263 } 2264 2265 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2266 { 2267 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2268 2269 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2270 } 2271 2272 /* 2273 * Send the FW a request to remove the station from it's internal data 2274 * structures, and in addition remove it from the local data structure. 2275 */ 2276 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2277 { 2278 int ret; 2279 2280 lockdep_assert_held(&mvm->mutex); 2281 2282 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2283 2284 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2285 2286 return ret; 2287 } 2288 2289 /* 2290 * Allocate a new station entry for the multicast station to the given vif, 2291 * and send it to the FW. 2292 * Note that each AP/GO mac should have its own multicast station. 2293 * 2294 * @mvm: the mvm component 2295 * @vif: the interface to which the multicast station is added 2296 */ 2297 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2298 { 2299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2300 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2301 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2302 const u8 *maddr = _maddr; 2303 struct iwl_trans_txq_scd_cfg cfg = { 2304 .fifo = vif->type == NL80211_IFTYPE_AP ? 2305 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2306 .sta_id = msta->sta_id, 2307 .tid = 0, 2308 .aggregate = false, 2309 .frame_limit = IWL_FRAME_LIMIT, 2310 }; 2311 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2312 int ret; 2313 2314 lockdep_assert_held(&mvm->mutex); 2315 2316 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2317 vif->type != NL80211_IFTYPE_ADHOC)) 2318 return -ENOTSUPP; 2319 2320 /* 2321 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2322 * invalid, so make sure we use the queue we want. 2323 * Note that this is done here as we want to avoid making DQA 2324 * changes in mac80211 layer. 2325 */ 2326 if (vif->type == NL80211_IFTYPE_ADHOC) 2327 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2328 2329 /* 2330 * While in previous FWs we had to exclude cab queue from TFD queue 2331 * mask, now it is needed as any other queue. 2332 */ 2333 if (!iwl_mvm_has_new_tx_api(mvm) && 2334 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2335 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2336 timeout); 2337 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2338 } 2339 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2340 mvmvif->id, mvmvif->color); 2341 if (ret) 2342 goto err; 2343 2344 /* 2345 * Enable cab queue after the ADD_STA command is sent. 2346 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2347 * command with unknown station id, and for FW that doesn't support 2348 * station API since the cab queue is not included in the 2349 * tfd_queue_mask. 2350 */ 2351 if (iwl_mvm_has_new_tx_api(mvm)) { 2352 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2353 0, 2354 timeout); 2355 if (queue < 0) { 2356 ret = queue; 2357 goto err; 2358 } 2359 mvmvif->cab_queue = queue; 2360 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2361 IWL_UCODE_TLV_API_STA_TYPE)) 2362 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2363 timeout); 2364 2365 return 0; 2366 err: 2367 iwl_mvm_dealloc_int_sta(mvm, msta); 2368 return ret; 2369 } 2370 2371 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2372 struct ieee80211_key_conf *keyconf, 2373 bool mcast) 2374 { 2375 union { 2376 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2377 struct iwl_mvm_add_sta_key_cmd cmd; 2378 } u = {}; 2379 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2380 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2381 __le16 key_flags; 2382 int ret, size; 2383 u32 status; 2384 2385 /* This is a valid situation for GTK removal */ 2386 if (sta_id == IWL_MVM_INVALID_STA) 2387 return 0; 2388 2389 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2390 STA_KEY_FLG_KEYID_MSK); 2391 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2392 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2393 2394 if (mcast) 2395 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2396 2397 /* 2398 * The fields assigned here are in the same location at the start 2399 * of the command, so we can do this union trick. 2400 */ 2401 u.cmd.common.key_flags = key_flags; 2402 u.cmd.common.key_offset = keyconf->hw_key_idx; 2403 u.cmd.common.sta_id = sta_id; 2404 2405 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2406 2407 status = ADD_STA_SUCCESS; 2408 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2409 &status); 2410 2411 switch (status) { 2412 case ADD_STA_SUCCESS: 2413 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2414 break; 2415 default: 2416 ret = -EIO; 2417 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2418 break; 2419 } 2420 2421 return ret; 2422 } 2423 2424 /* 2425 * Send the FW a request to remove the station from it's internal data 2426 * structures, and in addition remove it from the local data structure. 2427 */ 2428 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2429 { 2430 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2431 int ret; 2432 2433 lockdep_assert_held(&mvm->mutex); 2434 2435 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2436 2437 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0, 0); 2438 2439 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2440 if (ret) 2441 IWL_WARN(mvm, "Failed sending remove station\n"); 2442 2443 return ret; 2444 } 2445 2446 #define IWL_MAX_RX_BA_SESSIONS 16 2447 2448 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2449 { 2450 struct iwl_mvm_delba_data notif = { 2451 .baid = baid, 2452 }; 2453 2454 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2455 ¬if, sizeof(notif)); 2456 }; 2457 2458 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2459 struct iwl_mvm_baid_data *data) 2460 { 2461 int i; 2462 2463 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2464 2465 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2466 int j; 2467 struct iwl_mvm_reorder_buffer *reorder_buf = 2468 &data->reorder_buf[i]; 2469 struct iwl_mvm_reorder_buf_entry *entries = 2470 &data->entries[i * data->entries_per_queue]; 2471 2472 spin_lock_bh(&reorder_buf->lock); 2473 if (likely(!reorder_buf->num_stored)) { 2474 spin_unlock_bh(&reorder_buf->lock); 2475 continue; 2476 } 2477 2478 /* 2479 * This shouldn't happen in regular DELBA since the internal 2480 * delBA notification should trigger a release of all frames in 2481 * the reorder buffer. 2482 */ 2483 WARN_ON(1); 2484 2485 for (j = 0; j < reorder_buf->buf_size; j++) 2486 __skb_queue_purge(&entries[j].e.frames); 2487 /* 2488 * Prevent timer re-arm. This prevents a very far fetched case 2489 * where we timed out on the notification. There may be prior 2490 * RX frames pending in the RX queue before the notification 2491 * that might get processed between now and the actual deletion 2492 * and we would re-arm the timer although we are deleting the 2493 * reorder buffer. 2494 */ 2495 reorder_buf->removed = true; 2496 spin_unlock_bh(&reorder_buf->lock); 2497 del_timer_sync(&reorder_buf->reorder_timer); 2498 } 2499 } 2500 2501 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2502 struct iwl_mvm_baid_data *data, 2503 u16 ssn, u16 buf_size) 2504 { 2505 int i; 2506 2507 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2508 struct iwl_mvm_reorder_buffer *reorder_buf = 2509 &data->reorder_buf[i]; 2510 struct iwl_mvm_reorder_buf_entry *entries = 2511 &data->entries[i * data->entries_per_queue]; 2512 int j; 2513 2514 reorder_buf->num_stored = 0; 2515 reorder_buf->head_sn = ssn; 2516 reorder_buf->buf_size = buf_size; 2517 /* rx reorder timer */ 2518 timer_setup(&reorder_buf->reorder_timer, 2519 iwl_mvm_reorder_timer_expired, 0); 2520 spin_lock_init(&reorder_buf->lock); 2521 reorder_buf->mvm = mvm; 2522 reorder_buf->queue = i; 2523 reorder_buf->valid = false; 2524 for (j = 0; j < reorder_buf->buf_size; j++) 2525 __skb_queue_head_init(&entries[j].e.frames); 2526 } 2527 } 2528 2529 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2530 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2531 { 2532 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2533 struct iwl_mvm_add_sta_cmd cmd = {}; 2534 struct iwl_mvm_baid_data *baid_data = NULL; 2535 int ret; 2536 u32 status; 2537 2538 lockdep_assert_held(&mvm->mutex); 2539 2540 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2541 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2542 return -ENOSPC; 2543 } 2544 2545 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2546 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2547 2548 /* sparse doesn't like the __align() so don't check */ 2549 #ifndef __CHECKER__ 2550 /* 2551 * The division below will be OK if either the cache line size 2552 * can be divided by the entry size (ALIGN will round up) or if 2553 * if the entry size can be divided by the cache line size, in 2554 * which case the ALIGN() will do nothing. 2555 */ 2556 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2557 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2558 #endif 2559 2560 /* 2561 * Upward align the reorder buffer size to fill an entire cache 2562 * line for each queue, to avoid sharing cache lines between 2563 * different queues. 2564 */ 2565 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2566 2567 /* 2568 * Allocate here so if allocation fails we can bail out early 2569 * before starting the BA session in the firmware 2570 */ 2571 baid_data = kzalloc(sizeof(*baid_data) + 2572 mvm->trans->num_rx_queues * 2573 reorder_buf_size, 2574 GFP_KERNEL); 2575 if (!baid_data) 2576 return -ENOMEM; 2577 2578 /* 2579 * This division is why we need the above BUILD_BUG_ON(), 2580 * if that doesn't hold then this will not be right. 2581 */ 2582 baid_data->entries_per_queue = 2583 reorder_buf_size / sizeof(baid_data->entries[0]); 2584 } 2585 2586 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2587 cmd.sta_id = mvm_sta->sta_id; 2588 cmd.add_modify = STA_MODE_MODIFY; 2589 if (start) { 2590 cmd.add_immediate_ba_tid = (u8) tid; 2591 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2592 cmd.rx_ba_window = cpu_to_le16(buf_size); 2593 } else { 2594 cmd.remove_immediate_ba_tid = (u8) tid; 2595 } 2596 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2597 STA_MODIFY_REMOVE_BA_TID; 2598 2599 status = ADD_STA_SUCCESS; 2600 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2601 iwl_mvm_add_sta_cmd_size(mvm), 2602 &cmd, &status); 2603 if (ret) 2604 goto out_free; 2605 2606 switch (status & IWL_ADD_STA_STATUS_MASK) { 2607 case ADD_STA_SUCCESS: 2608 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2609 start ? "start" : "stopp"); 2610 break; 2611 case ADD_STA_IMMEDIATE_BA_FAILURE: 2612 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2613 ret = -ENOSPC; 2614 break; 2615 default: 2616 ret = -EIO; 2617 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2618 start ? "start" : "stopp", status); 2619 break; 2620 } 2621 2622 if (ret) 2623 goto out_free; 2624 2625 if (start) { 2626 u8 baid; 2627 2628 mvm->rx_ba_sessions++; 2629 2630 if (!iwl_mvm_has_new_rx_api(mvm)) 2631 return 0; 2632 2633 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2634 ret = -EINVAL; 2635 goto out_free; 2636 } 2637 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2638 IWL_ADD_STA_BAID_SHIFT); 2639 baid_data->baid = baid; 2640 baid_data->timeout = timeout; 2641 baid_data->last_rx = jiffies; 2642 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2643 timer_setup(&baid_data->session_timer, 2644 iwl_mvm_rx_agg_session_expired, 0); 2645 baid_data->mvm = mvm; 2646 baid_data->tid = tid; 2647 baid_data->sta_id = mvm_sta->sta_id; 2648 2649 mvm_sta->tid_to_baid[tid] = baid; 2650 if (timeout) 2651 mod_timer(&baid_data->session_timer, 2652 TU_TO_EXP_TIME(timeout * 2)); 2653 2654 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2655 /* 2656 * protect the BA data with RCU to cover a case where our 2657 * internal RX sync mechanism will timeout (not that it's 2658 * supposed to happen) and we will free the session data while 2659 * RX is being processed in parallel 2660 */ 2661 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2662 mvm_sta->sta_id, tid, baid); 2663 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2664 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2665 } else { 2666 u8 baid = mvm_sta->tid_to_baid[tid]; 2667 2668 if (mvm->rx_ba_sessions > 0) 2669 /* check that restart flow didn't zero the counter */ 2670 mvm->rx_ba_sessions--; 2671 if (!iwl_mvm_has_new_rx_api(mvm)) 2672 return 0; 2673 2674 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2675 return -EINVAL; 2676 2677 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2678 if (WARN_ON(!baid_data)) 2679 return -EINVAL; 2680 2681 /* synchronize all rx queues so we can safely delete */ 2682 iwl_mvm_free_reorder(mvm, baid_data); 2683 del_timer_sync(&baid_data->session_timer); 2684 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2685 kfree_rcu(baid_data, rcu_head); 2686 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2687 } 2688 return 0; 2689 2690 out_free: 2691 kfree(baid_data); 2692 return ret; 2693 } 2694 2695 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2696 int tid, u8 queue, bool start) 2697 { 2698 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2699 struct iwl_mvm_add_sta_cmd cmd = {}; 2700 int ret; 2701 u32 status; 2702 2703 lockdep_assert_held(&mvm->mutex); 2704 2705 if (start) { 2706 mvm_sta->tfd_queue_msk |= BIT(queue); 2707 mvm_sta->tid_disable_agg &= ~BIT(tid); 2708 } else { 2709 /* In DQA-mode the queue isn't removed on agg termination */ 2710 mvm_sta->tid_disable_agg |= BIT(tid); 2711 } 2712 2713 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2714 cmd.sta_id = mvm_sta->sta_id; 2715 cmd.add_modify = STA_MODE_MODIFY; 2716 if (!iwl_mvm_has_new_tx_api(mvm)) 2717 cmd.modify_mask = STA_MODIFY_QUEUES; 2718 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2719 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2720 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2721 2722 status = ADD_STA_SUCCESS; 2723 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2724 iwl_mvm_add_sta_cmd_size(mvm), 2725 &cmd, &status); 2726 if (ret) 2727 return ret; 2728 2729 switch (status & IWL_ADD_STA_STATUS_MASK) { 2730 case ADD_STA_SUCCESS: 2731 break; 2732 default: 2733 ret = -EIO; 2734 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2735 start ? "start" : "stopp", status); 2736 break; 2737 } 2738 2739 return ret; 2740 } 2741 2742 const u8 tid_to_mac80211_ac[] = { 2743 IEEE80211_AC_BE, 2744 IEEE80211_AC_BK, 2745 IEEE80211_AC_BK, 2746 IEEE80211_AC_BE, 2747 IEEE80211_AC_VI, 2748 IEEE80211_AC_VI, 2749 IEEE80211_AC_VO, 2750 IEEE80211_AC_VO, 2751 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2752 }; 2753 2754 static const u8 tid_to_ucode_ac[] = { 2755 AC_BE, 2756 AC_BK, 2757 AC_BK, 2758 AC_BE, 2759 AC_VI, 2760 AC_VI, 2761 AC_VO, 2762 AC_VO, 2763 }; 2764 2765 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2766 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2767 { 2768 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2769 struct iwl_mvm_tid_data *tid_data; 2770 u16 normalized_ssn; 2771 u16 txq_id; 2772 int ret; 2773 2774 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2775 return -EINVAL; 2776 2777 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2778 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2779 IWL_ERR(mvm, 2780 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2781 mvmsta->tid_data[tid].state); 2782 return -ENXIO; 2783 } 2784 2785 lockdep_assert_held(&mvm->mutex); 2786 2787 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2788 iwl_mvm_has_new_tx_api(mvm)) { 2789 u8 ac = tid_to_mac80211_ac[tid]; 2790 2791 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2792 if (ret) 2793 return ret; 2794 } 2795 2796 spin_lock_bh(&mvmsta->lock); 2797 2798 /* 2799 * Note the possible cases: 2800 * 1. An enabled TXQ - TXQ needs to become agg'ed 2801 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2802 * it as reserved 2803 */ 2804 txq_id = mvmsta->tid_data[tid].txq_id; 2805 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2806 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2807 IWL_MVM_DQA_MIN_DATA_QUEUE, 2808 IWL_MVM_DQA_MAX_DATA_QUEUE); 2809 if (ret < 0) { 2810 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2811 goto out; 2812 } 2813 2814 txq_id = ret; 2815 2816 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2817 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2818 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2819 ret = -ENXIO; 2820 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2821 tid, IWL_MAX_HW_QUEUES - 1); 2822 goto out; 2823 2824 } else if (unlikely(mvm->queue_info[txq_id].status == 2825 IWL_MVM_QUEUE_SHARED)) { 2826 ret = -ENXIO; 2827 IWL_DEBUG_TX_QUEUES(mvm, 2828 "Can't start tid %d agg on shared queue!\n", 2829 tid); 2830 goto out; 2831 } 2832 2833 IWL_DEBUG_TX_QUEUES(mvm, 2834 "AGG for tid %d will be on queue #%d\n", 2835 tid, txq_id); 2836 2837 tid_data = &mvmsta->tid_data[tid]; 2838 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2839 tid_data->txq_id = txq_id; 2840 *ssn = tid_data->ssn; 2841 2842 IWL_DEBUG_TX_QUEUES(mvm, 2843 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2844 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2845 tid_data->next_reclaimed); 2846 2847 /* 2848 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2849 * to align the wrap around of ssn so we compare relevant values. 2850 */ 2851 normalized_ssn = tid_data->ssn; 2852 if (mvm->trans->trans_cfg->gen2) 2853 normalized_ssn &= 0xff; 2854 2855 if (normalized_ssn == tid_data->next_reclaimed) { 2856 tid_data->state = IWL_AGG_STARTING; 2857 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 2858 } else { 2859 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2860 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 2861 } 2862 2863 out: 2864 spin_unlock_bh(&mvmsta->lock); 2865 2866 return ret; 2867 } 2868 2869 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2870 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2871 bool amsdu) 2872 { 2873 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2874 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2875 unsigned int wdg_timeout = 2876 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2877 int queue, ret; 2878 bool alloc_queue = true; 2879 enum iwl_mvm_queue_status queue_status; 2880 u16 ssn; 2881 2882 struct iwl_trans_txq_scd_cfg cfg = { 2883 .sta_id = mvmsta->sta_id, 2884 .tid = tid, 2885 .frame_limit = buf_size, 2886 .aggregate = true, 2887 }; 2888 2889 /* 2890 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2891 * manager, so this function should never be called in this case. 2892 */ 2893 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2894 return -EINVAL; 2895 2896 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2897 != IWL_MAX_TID_COUNT); 2898 2899 spin_lock_bh(&mvmsta->lock); 2900 ssn = tid_data->ssn; 2901 queue = tid_data->txq_id; 2902 tid_data->state = IWL_AGG_ON; 2903 mvmsta->agg_tids |= BIT(tid); 2904 tid_data->ssn = 0xffff; 2905 tid_data->amsdu_in_ampdu_allowed = amsdu; 2906 spin_unlock_bh(&mvmsta->lock); 2907 2908 if (iwl_mvm_has_new_tx_api(mvm)) { 2909 /* 2910 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2911 * would have failed, so if we are here there is no need to 2912 * allocate a queue. 2913 * However, if aggregation size is different than the default 2914 * size, the scheduler should be reconfigured. 2915 * We cannot do this with the new TX API, so return unsupported 2916 * for now, until it will be offloaded to firmware.. 2917 * Note that if SCD default value changes - this condition 2918 * should be updated as well. 2919 */ 2920 if (buf_size < IWL_FRAME_LIMIT) 2921 return -ENOTSUPP; 2922 2923 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2924 if (ret) 2925 return -EIO; 2926 goto out; 2927 } 2928 2929 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2930 2931 queue_status = mvm->queue_info[queue].status; 2932 2933 /* Maybe there is no need to even alloc a queue... */ 2934 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2935 alloc_queue = false; 2936 2937 /* 2938 * Only reconfig the SCD for the queue if the window size has 2939 * changed from current (become smaller) 2940 */ 2941 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2942 /* 2943 * If reconfiguring an existing queue, it first must be 2944 * drained 2945 */ 2946 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2947 BIT(queue)); 2948 if (ret) { 2949 IWL_ERR(mvm, 2950 "Error draining queue before reconfig\n"); 2951 return ret; 2952 } 2953 2954 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2955 mvmsta->sta_id, tid, 2956 buf_size, ssn); 2957 if (ret) { 2958 IWL_ERR(mvm, 2959 "Error reconfiguring TXQ #%d\n", queue); 2960 return ret; 2961 } 2962 } 2963 2964 if (alloc_queue) 2965 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 2966 &cfg, wdg_timeout); 2967 2968 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2969 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2970 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2971 if (ret) 2972 return -EIO; 2973 } 2974 2975 /* No need to mark as reserved */ 2976 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2977 2978 out: 2979 /* 2980 * Even though in theory the peer could have different 2981 * aggregation reorder buffer sizes for different sessions, 2982 * our ucode doesn't allow for that and has a global limit 2983 * for each station. Therefore, use the minimum of all the 2984 * aggregation sessions and our default value. 2985 */ 2986 mvmsta->max_agg_bufsize = 2987 min(mvmsta->max_agg_bufsize, buf_size); 2988 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2989 2990 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2991 sta->addr, tid); 2992 2993 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 2994 } 2995 2996 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 2997 struct iwl_mvm_sta *mvmsta, 2998 struct iwl_mvm_tid_data *tid_data) 2999 { 3000 u16 txq_id = tid_data->txq_id; 3001 3002 lockdep_assert_held(&mvm->mutex); 3003 3004 if (iwl_mvm_has_new_tx_api(mvm)) 3005 return; 3006 3007 /* 3008 * The TXQ is marked as reserved only if no traffic came through yet 3009 * This means no traffic has been sent on this TID (agg'd or not), so 3010 * we no longer have use for the queue. Since it hasn't even been 3011 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3012 * free. 3013 */ 3014 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3015 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3016 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3017 } 3018 } 3019 3020 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3021 struct ieee80211_sta *sta, u16 tid) 3022 { 3023 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3024 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3025 u16 txq_id; 3026 int err; 3027 3028 /* 3029 * If mac80211 is cleaning its state, then say that we finished since 3030 * our state has been cleared anyway. 3031 */ 3032 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3033 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3034 return 0; 3035 } 3036 3037 spin_lock_bh(&mvmsta->lock); 3038 3039 txq_id = tid_data->txq_id; 3040 3041 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3042 mvmsta->sta_id, tid, txq_id, tid_data->state); 3043 3044 mvmsta->agg_tids &= ~BIT(tid); 3045 3046 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3047 3048 switch (tid_data->state) { 3049 case IWL_AGG_ON: 3050 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3051 3052 IWL_DEBUG_TX_QUEUES(mvm, 3053 "ssn = %d, next_recl = %d\n", 3054 tid_data->ssn, tid_data->next_reclaimed); 3055 3056 tid_data->ssn = 0xffff; 3057 tid_data->state = IWL_AGG_OFF; 3058 spin_unlock_bh(&mvmsta->lock); 3059 3060 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3061 3062 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3063 return 0; 3064 case IWL_AGG_STARTING: 3065 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3066 /* 3067 * The agg session has been stopped before it was set up. This 3068 * can happen when the AddBA timer times out for example. 3069 */ 3070 3071 /* No barriers since we are under mutex */ 3072 lockdep_assert_held(&mvm->mutex); 3073 3074 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3075 tid_data->state = IWL_AGG_OFF; 3076 err = 0; 3077 break; 3078 default: 3079 IWL_ERR(mvm, 3080 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3081 mvmsta->sta_id, tid, tid_data->state); 3082 IWL_ERR(mvm, 3083 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3084 err = -EINVAL; 3085 } 3086 3087 spin_unlock_bh(&mvmsta->lock); 3088 3089 return err; 3090 } 3091 3092 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3093 struct ieee80211_sta *sta, u16 tid) 3094 { 3095 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3096 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3097 u16 txq_id; 3098 enum iwl_mvm_agg_state old_state; 3099 3100 /* 3101 * First set the agg state to OFF to avoid calling 3102 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3103 */ 3104 spin_lock_bh(&mvmsta->lock); 3105 txq_id = tid_data->txq_id; 3106 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3107 mvmsta->sta_id, tid, txq_id, tid_data->state); 3108 old_state = tid_data->state; 3109 tid_data->state = IWL_AGG_OFF; 3110 mvmsta->agg_tids &= ~BIT(tid); 3111 spin_unlock_bh(&mvmsta->lock); 3112 3113 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3114 3115 if (old_state >= IWL_AGG_ON) { 3116 iwl_mvm_drain_sta(mvm, mvmsta, true); 3117 3118 if (iwl_mvm_has_new_tx_api(mvm)) { 3119 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3120 BIT(tid))) 3121 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3122 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3123 } else { 3124 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3125 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3126 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3127 } 3128 3129 iwl_mvm_drain_sta(mvm, mvmsta, false); 3130 3131 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3132 } 3133 3134 return 0; 3135 } 3136 3137 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3138 { 3139 int i, max = -1, max_offs = -1; 3140 3141 lockdep_assert_held(&mvm->mutex); 3142 3143 /* Pick the unused key offset with the highest 'deleted' 3144 * counter. Every time a key is deleted, all the counters 3145 * are incremented and the one that was just deleted is 3146 * reset to zero. Thus, the highest counter is the one 3147 * that was deleted longest ago. Pick that one. 3148 */ 3149 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3150 if (test_bit(i, mvm->fw_key_table)) 3151 continue; 3152 if (mvm->fw_key_deleted[i] > max) { 3153 max = mvm->fw_key_deleted[i]; 3154 max_offs = i; 3155 } 3156 } 3157 3158 if (max_offs < 0) 3159 return STA_KEY_IDX_INVALID; 3160 3161 return max_offs; 3162 } 3163 3164 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3165 struct ieee80211_vif *vif, 3166 struct ieee80211_sta *sta) 3167 { 3168 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3169 3170 if (sta) 3171 return iwl_mvm_sta_from_mac80211(sta); 3172 3173 /* 3174 * The device expects GTKs for station interfaces to be 3175 * installed as GTKs for the AP station. If we have no 3176 * station ID, then use AP's station ID. 3177 */ 3178 if (vif->type == NL80211_IFTYPE_STATION && 3179 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3180 u8 sta_id = mvmvif->ap_sta_id; 3181 3182 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3183 lockdep_is_held(&mvm->mutex)); 3184 3185 /* 3186 * It is possible that the 'sta' parameter is NULL, 3187 * for example when a GTK is removed - the sta_id will then 3188 * be the AP ID, and no station was passed by mac80211. 3189 */ 3190 if (IS_ERR_OR_NULL(sta)) 3191 return NULL; 3192 3193 return iwl_mvm_sta_from_mac80211(sta); 3194 } 3195 3196 return NULL; 3197 } 3198 3199 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3200 { 3201 int i; 3202 3203 for (i = len - 1; i >= 0; i--) { 3204 if (pn1[i] > pn2[i]) 3205 return 1; 3206 if (pn1[i] < pn2[i]) 3207 return -1; 3208 } 3209 3210 return 0; 3211 } 3212 3213 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3214 u32 sta_id, 3215 struct ieee80211_key_conf *key, bool mcast, 3216 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3217 u8 key_offset, bool mfp) 3218 { 3219 union { 3220 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3221 struct iwl_mvm_add_sta_key_cmd cmd; 3222 } u = {}; 3223 __le16 key_flags; 3224 int ret; 3225 u32 status; 3226 u16 keyidx; 3227 u64 pn = 0; 3228 int i, size; 3229 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3230 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3231 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3232 ADD_STA_KEY, 3233 new_api ? 2 : 1); 3234 3235 if (sta_id == IWL_MVM_INVALID_STA) 3236 return -EINVAL; 3237 3238 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3239 STA_KEY_FLG_KEYID_MSK; 3240 key_flags = cpu_to_le16(keyidx); 3241 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3242 3243 switch (key->cipher) { 3244 case WLAN_CIPHER_SUITE_TKIP: 3245 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3246 if (api_ver >= 2) { 3247 memcpy((void *)&u.cmd.tx_mic_key, 3248 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3249 IWL_MIC_KEY_SIZE); 3250 3251 memcpy((void *)&u.cmd.rx_mic_key, 3252 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3253 IWL_MIC_KEY_SIZE); 3254 pn = atomic64_read(&key->tx_pn); 3255 3256 } else { 3257 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3258 for (i = 0; i < 5; i++) 3259 u.cmd_v1.tkip_rx_ttak[i] = 3260 cpu_to_le16(tkip_p1k[i]); 3261 } 3262 memcpy(u.cmd.common.key, key->key, key->keylen); 3263 break; 3264 case WLAN_CIPHER_SUITE_CCMP: 3265 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3266 memcpy(u.cmd.common.key, key->key, key->keylen); 3267 if (api_ver >= 2) 3268 pn = atomic64_read(&key->tx_pn); 3269 break; 3270 case WLAN_CIPHER_SUITE_WEP104: 3271 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3272 fallthrough; 3273 case WLAN_CIPHER_SUITE_WEP40: 3274 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3275 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3276 break; 3277 case WLAN_CIPHER_SUITE_GCMP_256: 3278 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3279 fallthrough; 3280 case WLAN_CIPHER_SUITE_GCMP: 3281 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3282 memcpy(u.cmd.common.key, key->key, key->keylen); 3283 if (api_ver >= 2) 3284 pn = atomic64_read(&key->tx_pn); 3285 break; 3286 default: 3287 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3288 memcpy(u.cmd.common.key, key->key, key->keylen); 3289 } 3290 3291 if (mcast) 3292 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3293 if (mfp) 3294 key_flags |= cpu_to_le16(STA_KEY_MFP); 3295 3296 u.cmd.common.key_offset = key_offset; 3297 u.cmd.common.key_flags = key_flags; 3298 u.cmd.common.sta_id = sta_id; 3299 3300 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3301 i = 0; 3302 else 3303 i = -1; 3304 3305 for (; i < IEEE80211_NUM_TIDS; i++) { 3306 struct ieee80211_key_seq seq = {}; 3307 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3308 int rx_pn_len = 8; 3309 /* there's a hole at 2/3 in FW format depending on version */ 3310 int hole = api_ver >= 3 ? 0 : 2; 3311 3312 ieee80211_get_key_rx_seq(key, i, &seq); 3313 3314 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3315 rx_pn[0] = seq.tkip.iv16; 3316 rx_pn[1] = seq.tkip.iv16 >> 8; 3317 rx_pn[2 + hole] = seq.tkip.iv32; 3318 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3319 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3320 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3321 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3322 rx_pn = seq.hw.seq; 3323 rx_pn_len = seq.hw.seq_len; 3324 } else { 3325 rx_pn[0] = seq.ccmp.pn[0]; 3326 rx_pn[1] = seq.ccmp.pn[1]; 3327 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3328 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3329 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3330 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3331 } 3332 3333 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3334 rx_pn_len) > 0) 3335 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3336 rx_pn_len); 3337 } 3338 3339 if (api_ver >= 2) { 3340 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3341 size = sizeof(u.cmd); 3342 } else { 3343 size = sizeof(u.cmd_v1); 3344 } 3345 3346 status = ADD_STA_SUCCESS; 3347 if (cmd_flags & CMD_ASYNC) 3348 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3349 &u.cmd); 3350 else 3351 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3352 &u.cmd, &status); 3353 3354 switch (status) { 3355 case ADD_STA_SUCCESS: 3356 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3357 break; 3358 default: 3359 ret = -EIO; 3360 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3361 break; 3362 } 3363 3364 return ret; 3365 } 3366 3367 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3368 struct ieee80211_key_conf *keyconf, 3369 u8 sta_id, bool remove_key) 3370 { 3371 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3372 3373 /* verify the key details match the required command's expectations */ 3374 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3375 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3376 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3377 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3378 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3379 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3380 return -EINVAL; 3381 3382 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3383 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3384 return -EINVAL; 3385 3386 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3387 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3388 3389 if (remove_key) { 3390 /* This is a valid situation for IGTK */ 3391 if (sta_id == IWL_MVM_INVALID_STA) 3392 return 0; 3393 3394 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3395 } else { 3396 struct ieee80211_key_seq seq; 3397 const u8 *pn; 3398 3399 switch (keyconf->cipher) { 3400 case WLAN_CIPHER_SUITE_AES_CMAC: 3401 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3402 break; 3403 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3404 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3405 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3406 break; 3407 default: 3408 return -EINVAL; 3409 } 3410 3411 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3412 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3413 igtk_cmd.ctrl_flags |= 3414 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3415 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3416 pn = seq.aes_cmac.pn; 3417 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3418 ((u64) pn[4] << 8) | 3419 ((u64) pn[3] << 16) | 3420 ((u64) pn[2] << 24) | 3421 ((u64) pn[1] << 32) | 3422 ((u64) pn[0] << 40)); 3423 } 3424 3425 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3426 remove_key ? "removing" : "installing", 3427 keyconf->keyidx >= 6 ? "B" : "", 3428 keyconf->keyidx, igtk_cmd.sta_id); 3429 3430 if (!iwl_mvm_has_new_rx_api(mvm)) { 3431 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3432 .ctrl_flags = igtk_cmd.ctrl_flags, 3433 .key_id = igtk_cmd.key_id, 3434 .sta_id = igtk_cmd.sta_id, 3435 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3436 }; 3437 3438 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3439 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3440 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3441 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3442 } 3443 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3444 sizeof(igtk_cmd), &igtk_cmd); 3445 } 3446 3447 3448 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3449 struct ieee80211_vif *vif, 3450 struct ieee80211_sta *sta) 3451 { 3452 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3453 3454 if (sta) 3455 return sta->addr; 3456 3457 if (vif->type == NL80211_IFTYPE_STATION && 3458 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3459 u8 sta_id = mvmvif->ap_sta_id; 3460 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3461 lockdep_is_held(&mvm->mutex)); 3462 return sta->addr; 3463 } 3464 3465 3466 return NULL; 3467 } 3468 3469 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3470 struct ieee80211_vif *vif, 3471 struct ieee80211_sta *sta, 3472 struct ieee80211_key_conf *keyconf, 3473 u8 key_offset, 3474 bool mcast) 3475 { 3476 const u8 *addr; 3477 struct ieee80211_key_seq seq; 3478 u16 p1k[5]; 3479 u32 sta_id; 3480 bool mfp = false; 3481 3482 if (sta) { 3483 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3484 3485 sta_id = mvm_sta->sta_id; 3486 mfp = sta->mfp; 3487 } else if (vif->type == NL80211_IFTYPE_AP && 3488 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3489 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3490 3491 sta_id = mvmvif->mcast_sta.sta_id; 3492 } else { 3493 IWL_ERR(mvm, "Failed to find station id\n"); 3494 return -EINVAL; 3495 } 3496 3497 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3498 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3499 /* get phase 1 key from mac80211 */ 3500 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3501 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3502 3503 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3504 seq.tkip.iv32, p1k, 0, key_offset, 3505 mfp); 3506 } 3507 3508 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3509 0, NULL, 0, key_offset, mfp); 3510 } 3511 3512 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3513 struct ieee80211_vif *vif, 3514 struct ieee80211_sta *sta, 3515 struct ieee80211_key_conf *keyconf, 3516 u8 key_offset) 3517 { 3518 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3519 struct iwl_mvm_sta *mvm_sta; 3520 u8 sta_id = IWL_MVM_INVALID_STA; 3521 int ret; 3522 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3523 3524 lockdep_assert_held(&mvm->mutex); 3525 3526 if (vif->type != NL80211_IFTYPE_AP || 3527 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3528 /* Get the station id from the mvm local station table */ 3529 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3530 if (!mvm_sta) { 3531 IWL_ERR(mvm, "Failed to find station\n"); 3532 return -EINVAL; 3533 } 3534 sta_id = mvm_sta->sta_id; 3535 3536 /* 3537 * It is possible that the 'sta' parameter is NULL, and thus 3538 * there is a need to retrieve the sta from the local station 3539 * table. 3540 */ 3541 if (!sta) { 3542 sta = rcu_dereference_protected( 3543 mvm->fw_id_to_mac_id[sta_id], 3544 lockdep_is_held(&mvm->mutex)); 3545 if (IS_ERR_OR_NULL(sta)) { 3546 IWL_ERR(mvm, "Invalid station id\n"); 3547 return -EINVAL; 3548 } 3549 } 3550 3551 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3552 return -EINVAL; 3553 } else { 3554 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3555 3556 sta_id = mvmvif->mcast_sta.sta_id; 3557 } 3558 3559 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3560 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3561 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3562 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3563 goto end; 3564 } 3565 3566 /* If the key_offset is not pre-assigned, we need to find a 3567 * new offset to use. In normal cases, the offset is not 3568 * pre-assigned, but during HW_RESTART we want to reuse the 3569 * same indices, so we pass them when this function is called. 3570 * 3571 * In D3 entry, we need to hardcoded the indices (because the 3572 * firmware hardcodes the PTK offset to 0). In this case, we 3573 * need to make sure we don't overwrite the hw_key_idx in the 3574 * keyconf structure, because otherwise we cannot configure 3575 * the original ones back when resuming. 3576 */ 3577 if (key_offset == STA_KEY_IDX_INVALID) { 3578 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3579 if (key_offset == STA_KEY_IDX_INVALID) 3580 return -ENOSPC; 3581 keyconf->hw_key_idx = key_offset; 3582 } 3583 3584 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3585 if (ret) 3586 goto end; 3587 3588 /* 3589 * For WEP, the same key is used for multicast and unicast. Upload it 3590 * again, using the same key offset, and now pointing the other one 3591 * to the same key slot (offset). 3592 * If this fails, remove the original as well. 3593 */ 3594 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3595 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3596 sta) { 3597 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3598 key_offset, !mcast); 3599 if (ret) { 3600 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3601 goto end; 3602 } 3603 } 3604 3605 __set_bit(key_offset, mvm->fw_key_table); 3606 3607 end: 3608 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3609 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3610 sta ? sta->addr : zero_addr, ret); 3611 return ret; 3612 } 3613 3614 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3615 struct ieee80211_vif *vif, 3616 struct ieee80211_sta *sta, 3617 struct ieee80211_key_conf *keyconf) 3618 { 3619 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3620 struct iwl_mvm_sta *mvm_sta; 3621 u8 sta_id = IWL_MVM_INVALID_STA; 3622 int ret, i; 3623 3624 lockdep_assert_held(&mvm->mutex); 3625 3626 /* Get the station from the mvm local station table */ 3627 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3628 if (mvm_sta) 3629 sta_id = mvm_sta->sta_id; 3630 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3631 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3632 3633 3634 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3635 keyconf->keyidx, sta_id); 3636 3637 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3638 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3639 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3640 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3641 3642 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3643 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3644 keyconf->hw_key_idx); 3645 return -ENOENT; 3646 } 3647 3648 /* track which key was deleted last */ 3649 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3650 if (mvm->fw_key_deleted[i] < U8_MAX) 3651 mvm->fw_key_deleted[i]++; 3652 } 3653 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3654 3655 if (sta && !mvm_sta) { 3656 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3657 return 0; 3658 } 3659 3660 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3661 if (ret) 3662 return ret; 3663 3664 /* delete WEP key twice to get rid of (now useless) offset */ 3665 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3666 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3667 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3668 3669 return ret; 3670 } 3671 3672 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3673 struct ieee80211_vif *vif, 3674 struct ieee80211_key_conf *keyconf, 3675 struct ieee80211_sta *sta, u32 iv32, 3676 u16 *phase1key) 3677 { 3678 struct iwl_mvm_sta *mvm_sta; 3679 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3680 bool mfp = sta ? sta->mfp : false; 3681 3682 rcu_read_lock(); 3683 3684 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3685 if (WARN_ON_ONCE(!mvm_sta)) 3686 goto unlock; 3687 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3688 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3689 mfp); 3690 3691 unlock: 3692 rcu_read_unlock(); 3693 } 3694 3695 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3696 struct ieee80211_sta *sta) 3697 { 3698 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3699 struct iwl_mvm_add_sta_cmd cmd = { 3700 .add_modify = STA_MODE_MODIFY, 3701 .sta_id = mvmsta->sta_id, 3702 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3703 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3704 }; 3705 int ret; 3706 3707 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3708 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3709 if (ret) 3710 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3711 } 3712 3713 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3714 struct ieee80211_sta *sta, 3715 enum ieee80211_frame_release_type reason, 3716 u16 cnt, u16 tids, bool more_data, 3717 bool single_sta_queue) 3718 { 3719 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3720 struct iwl_mvm_add_sta_cmd cmd = { 3721 .add_modify = STA_MODE_MODIFY, 3722 .sta_id = mvmsta->sta_id, 3723 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3724 .sleep_tx_count = cpu_to_le16(cnt), 3725 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3726 }; 3727 int tid, ret; 3728 unsigned long _tids = tids; 3729 3730 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3731 * Note that this field is reserved and unused by firmware not 3732 * supporting GO uAPSD, so it's safe to always do this. 3733 */ 3734 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3735 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3736 3737 /* If we're releasing frames from aggregation or dqa queues then check 3738 * if all the queues that we're releasing frames from, combined, have: 3739 * - more frames than the service period, in which case more_data 3740 * needs to be set 3741 * - fewer than 'cnt' frames, in which case we need to adjust the 3742 * firmware command (but do that unconditionally) 3743 */ 3744 if (single_sta_queue) { 3745 int remaining = cnt; 3746 int sleep_tx_count; 3747 3748 spin_lock_bh(&mvmsta->lock); 3749 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3750 struct iwl_mvm_tid_data *tid_data; 3751 u16 n_queued; 3752 3753 tid_data = &mvmsta->tid_data[tid]; 3754 3755 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3756 if (n_queued > remaining) { 3757 more_data = true; 3758 remaining = 0; 3759 break; 3760 } 3761 remaining -= n_queued; 3762 } 3763 sleep_tx_count = cnt - remaining; 3764 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3765 mvmsta->sleep_tx_count = sleep_tx_count; 3766 spin_unlock_bh(&mvmsta->lock); 3767 3768 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3769 if (WARN_ON(cnt - remaining == 0)) { 3770 ieee80211_sta_eosp(sta); 3771 return; 3772 } 3773 } 3774 3775 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3776 if (more_data) 3777 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3778 3779 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3780 mvmsta->next_status_eosp = true; 3781 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3782 } else { 3783 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3784 } 3785 3786 /* block the Tx queues until the FW updated the sleep Tx count */ 3787 iwl_trans_block_txq_ptrs(mvm->trans, true); 3788 3789 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3790 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3791 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3792 if (ret) 3793 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3794 } 3795 3796 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3797 struct iwl_rx_cmd_buffer *rxb) 3798 { 3799 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3800 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3801 struct ieee80211_sta *sta; 3802 u32 sta_id = le32_to_cpu(notif->sta_id); 3803 3804 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3805 return; 3806 3807 rcu_read_lock(); 3808 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3809 if (!IS_ERR_OR_NULL(sta)) 3810 ieee80211_sta_eosp(sta); 3811 rcu_read_unlock(); 3812 } 3813 3814 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3815 struct iwl_mvm_sta *mvmsta, bool disable) 3816 { 3817 struct iwl_mvm_add_sta_cmd cmd = { 3818 .add_modify = STA_MODE_MODIFY, 3819 .sta_id = mvmsta->sta_id, 3820 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3821 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3822 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3823 }; 3824 int ret; 3825 3826 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3827 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3828 if (ret) 3829 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3830 } 3831 3832 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3833 struct ieee80211_sta *sta, 3834 bool disable) 3835 { 3836 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3837 3838 spin_lock_bh(&mvm_sta->lock); 3839 3840 if (mvm_sta->disable_tx == disable) { 3841 spin_unlock_bh(&mvm_sta->lock); 3842 return; 3843 } 3844 3845 mvm_sta->disable_tx = disable; 3846 3847 /* 3848 * If sta PS state is handled by mac80211, tell it to start/stop 3849 * queuing tx for this station. 3850 */ 3851 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 3852 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3853 3854 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3855 3856 spin_unlock_bh(&mvm_sta->lock); 3857 } 3858 3859 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3860 struct iwl_mvm_vif *mvmvif, 3861 struct iwl_mvm_int_sta *sta, 3862 bool disable) 3863 { 3864 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3865 struct iwl_mvm_add_sta_cmd cmd = { 3866 .add_modify = STA_MODE_MODIFY, 3867 .sta_id = sta->sta_id, 3868 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3869 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3870 .mac_id_n_color = cpu_to_le32(id), 3871 }; 3872 int ret; 3873 3874 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3875 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3876 if (ret) 3877 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3878 } 3879 3880 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3881 struct iwl_mvm_vif *mvmvif, 3882 bool disable) 3883 { 3884 struct ieee80211_sta *sta; 3885 struct iwl_mvm_sta *mvm_sta; 3886 int i; 3887 3888 rcu_read_lock(); 3889 3890 /* Block/unblock all the stations of the given mvmvif */ 3891 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 3892 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 3893 if (IS_ERR_OR_NULL(sta)) 3894 continue; 3895 3896 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3897 if (mvm_sta->mac_id_n_color != 3898 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3899 continue; 3900 3901 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3902 } 3903 3904 rcu_read_unlock(); 3905 3906 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3907 return; 3908 3909 /* Need to block/unblock also multicast station */ 3910 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3911 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3912 &mvmvif->mcast_sta, disable); 3913 3914 /* 3915 * Only unblock the broadcast station (FW blocks it for immediate 3916 * quiet, not the driver) 3917 */ 3918 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3919 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3920 &mvmvif->bcast_sta, disable); 3921 } 3922 3923 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3924 { 3925 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3926 struct iwl_mvm_sta *mvmsta; 3927 3928 rcu_read_lock(); 3929 3930 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3931 3932 if (!WARN_ON(!mvmsta)) 3933 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3934 3935 rcu_read_unlock(); 3936 } 3937 3938 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3939 { 3940 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3941 3942 /* 3943 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3944 * to align the wrap around of ssn so we compare relevant values. 3945 */ 3946 if (mvm->trans->trans_cfg->gen2) 3947 sn &= 0xff; 3948 3949 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3950 } 3951 3952 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3953 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 3954 u8 *key, u32 key_len) 3955 { 3956 int ret; 3957 u16 queue; 3958 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3959 struct ieee80211_key_conf *keyconf; 3960 3961 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 3962 NL80211_IFTYPE_UNSPECIFIED, 3963 IWL_STA_LINK); 3964 if (ret) 3965 return ret; 3966 3967 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 3968 addr, sta, &queue, 3969 IWL_MVM_TX_FIFO_BE); 3970 if (ret) 3971 goto out; 3972 3973 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 3974 if (!keyconf) { 3975 ret = -ENOBUFS; 3976 goto out; 3977 } 3978 3979 keyconf->cipher = cipher; 3980 memcpy(keyconf->key, key, key_len); 3981 keyconf->keylen = key_len; 3982 3983 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 3984 0, NULL, 0, 0, true); 3985 kfree(keyconf); 3986 return 0; 3987 out: 3988 iwl_mvm_dealloc_int_sta(mvm, sta); 3989 return ret; 3990 } 3991