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 #if defined(__FreeBSD__) 9 #include <linux/cache.h> 10 #endif 11 12 #include "mvm.h" 13 #include "sta.h" 14 #include "rs.h" 15 16 /* 17 * New version of ADD_STA_sta command added new fields at the end of the 18 * structure, so sending the size of the relevant API's structure is enough to 19 * support both API versions. 20 */ 21 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 22 { 23 if (iwl_mvm_has_new_rx_api(mvm) || 24 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 25 return sizeof(struct iwl_mvm_add_sta_cmd); 26 else 27 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 28 } 29 30 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 31 enum nl80211_iftype iftype) 32 { 33 int sta_id; 34 u32 reserved_ids = 0; 35 36 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 37 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 38 39 lockdep_assert_held(&mvm->mutex); 40 41 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 42 if (iftype != NL80211_IFTYPE_STATION) 43 reserved_ids = BIT(0); 44 45 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 46 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 47 if (BIT(sta_id) & reserved_ids) 48 continue; 49 50 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 51 lockdep_is_held(&mvm->mutex))) 52 return sta_id; 53 } 54 return IWL_MVM_INVALID_STA; 55 } 56 57 /* send station add/update command to firmware */ 58 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 59 bool update, unsigned int flags) 60 { 61 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 62 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 63 .sta_id = mvm_sta->sta_id, 64 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 65 .add_modify = update ? 1 : 0, 66 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 67 STA_FLG_MIMO_EN_MSK | 68 STA_FLG_RTS_MIMO_PROT), 69 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 70 }; 71 int ret; 72 u32 status; 73 u32 agg_size = 0, mpdu_dens = 0; 74 75 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 76 add_sta_cmd.station_type = mvm_sta->sta_type; 77 78 if (!update || (flags & STA_MODIFY_QUEUES)) { 79 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 80 81 if (!iwl_mvm_has_new_tx_api(mvm)) { 82 add_sta_cmd.tfd_queue_msk = 83 cpu_to_le32(mvm_sta->tfd_queue_msk); 84 85 if (flags & STA_MODIFY_QUEUES) 86 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 87 } else { 88 WARN_ON(flags & STA_MODIFY_QUEUES); 89 } 90 } 91 92 switch (sta->bandwidth) { 93 case IEEE80211_STA_RX_BW_160: 94 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 95 fallthrough; 96 case IEEE80211_STA_RX_BW_80: 97 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 98 fallthrough; 99 case IEEE80211_STA_RX_BW_40: 100 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 101 fallthrough; 102 case IEEE80211_STA_RX_BW_20: 103 if (sta->ht_cap.ht_supported) 104 add_sta_cmd.station_flags |= 105 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 106 break; 107 } 108 109 switch (sta->rx_nss) { 110 case 1: 111 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 112 break; 113 case 2: 114 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 115 break; 116 case 3 ... 8: 117 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 118 break; 119 } 120 121 switch (sta->smps_mode) { 122 case IEEE80211_SMPS_AUTOMATIC: 123 case IEEE80211_SMPS_NUM_MODES: 124 WARN_ON(1); 125 break; 126 case IEEE80211_SMPS_STATIC: 127 /* override NSS */ 128 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 129 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 130 break; 131 case IEEE80211_SMPS_DYNAMIC: 132 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 133 break; 134 case IEEE80211_SMPS_OFF: 135 /* nothing */ 136 break; 137 } 138 139 if (sta->ht_cap.ht_supported) { 140 add_sta_cmd.station_flags_msk |= 141 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 142 STA_FLG_AGG_MPDU_DENS_MSK); 143 144 mpdu_dens = sta->ht_cap.ampdu_density; 145 } 146 147 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 148 add_sta_cmd.station_flags_msk |= 149 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 150 STA_FLG_AGG_MPDU_DENS_MSK); 151 152 mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 154 agg_size = le16_get_bits(sta->he_6ghz_capa.capa, 155 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 156 } else 157 if (sta->vht_cap.vht_supported) { 158 agg_size = sta->vht_cap.cap & 159 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 160 agg_size >>= 161 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 162 } else if (sta->ht_cap.ht_supported) { 163 agg_size = sta->ht_cap.ampdu_factor; 164 } 165 166 /* D6.0 10.12.2 A-MPDU length limit rules 167 * A STA indicates the maximum length of the A-MPDU preEOF padding 168 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 169 * Exponent field in its HT Capabilities, VHT Capabilities, 170 * and HE 6 GHz Band Capabilities elements (if present) and the 171 * Maximum AMPDU Length Exponent Extension field in its HE 172 * Capabilities element 173 */ 174 if (sta->he_cap.has_he) 175 agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], 176 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 177 178 /* Limit to max A-MPDU supported by FW */ 179 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 180 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 181 STA_FLG_MAX_AGG_SIZE_SHIFT); 182 183 add_sta_cmd.station_flags |= 184 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 185 add_sta_cmd.station_flags |= 186 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 187 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 188 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 189 190 if (sta->wme) { 191 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 192 193 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 194 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 195 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 196 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 197 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 198 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 199 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 200 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 201 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 202 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 203 } 204 205 status = ADD_STA_SUCCESS; 206 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 207 iwl_mvm_add_sta_cmd_size(mvm), 208 &add_sta_cmd, &status); 209 if (ret) 210 return ret; 211 212 switch (status & IWL_ADD_STA_STATUS_MASK) { 213 case ADD_STA_SUCCESS: 214 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 215 break; 216 default: 217 ret = -EIO; 218 IWL_ERR(mvm, "ADD_STA failed\n"); 219 break; 220 } 221 222 return ret; 223 } 224 225 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 226 { 227 struct iwl_mvm_baid_data *data = 228 from_timer(data, t, session_timer); 229 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 230 struct iwl_mvm_baid_data *ba_data; 231 struct ieee80211_sta *sta; 232 struct iwl_mvm_sta *mvm_sta; 233 unsigned long timeout; 234 235 rcu_read_lock(); 236 237 ba_data = rcu_dereference(*rcu_ptr); 238 239 if (WARN_ON(!ba_data)) 240 goto unlock; 241 242 if (!ba_data->timeout) 243 goto unlock; 244 245 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 246 if (time_is_after_jiffies(timeout)) { 247 mod_timer(&ba_data->session_timer, timeout); 248 goto unlock; 249 } 250 251 /* Timer expired */ 252 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 253 254 /* 255 * sta should be valid unless the following happens: 256 * The firmware asserts which triggers a reconfig flow, but 257 * the reconfig fails before we set the pointer to sta into 258 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 259 * A-MDPU and hence the timer continues to run. Then, the 260 * timer expires and sta is NULL. 261 */ 262 if (!sta) 263 goto unlock; 264 265 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 266 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 267 sta->addr, ba_data->tid); 268 unlock: 269 rcu_read_unlock(); 270 } 271 272 /* Disable aggregations for a bitmap of TIDs for a given station */ 273 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 274 unsigned long disable_agg_tids, 275 bool remove_queue) 276 { 277 struct iwl_mvm_add_sta_cmd cmd = {}; 278 struct ieee80211_sta *sta; 279 struct iwl_mvm_sta *mvmsta; 280 u32 status; 281 u8 sta_id; 282 283 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 284 return -EINVAL; 285 286 sta_id = mvm->queue_info[queue].ra_sta_id; 287 288 rcu_read_lock(); 289 290 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 291 292 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 293 rcu_read_unlock(); 294 return -EINVAL; 295 } 296 297 mvmsta = iwl_mvm_sta_from_mac80211(sta); 298 299 mvmsta->tid_disable_agg |= disable_agg_tids; 300 301 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 302 cmd.sta_id = mvmsta->sta_id; 303 cmd.add_modify = STA_MODE_MODIFY; 304 cmd.modify_mask = STA_MODIFY_QUEUES; 305 if (disable_agg_tids) 306 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 307 if (remove_queue) 308 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 309 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 310 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 311 312 rcu_read_unlock(); 313 314 /* Notify FW of queue removal from the STA queues */ 315 status = ADD_STA_SUCCESS; 316 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 317 iwl_mvm_add_sta_cmd_size(mvm), 318 &cmd, &status); 319 } 320 321 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 322 u16 *queueptr, u8 tid, u8 flags) 323 { 324 int queue = *queueptr; 325 struct iwl_scd_txq_cfg_cmd cmd = { 326 .scd_queue = queue, 327 .action = SCD_CFG_DISABLE_QUEUE, 328 }; 329 int ret; 330 331 if (iwl_mvm_has_new_tx_api(mvm)) { 332 iwl_trans_txq_free(mvm->trans, queue); 333 *queueptr = IWL_MVM_INVALID_QUEUE; 334 335 return 0; 336 } 337 338 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 339 return 0; 340 341 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 342 343 cmd.action = mvm->queue_info[queue].tid_bitmap ? 344 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 345 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 346 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 347 348 IWL_DEBUG_TX_QUEUES(mvm, 349 "Disabling TXQ #%d tids=0x%x\n", 350 queue, 351 mvm->queue_info[queue].tid_bitmap); 352 353 /* If the queue is still enabled - nothing left to do in this func */ 354 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 355 return 0; 356 357 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 358 cmd.tid = mvm->queue_info[queue].txq_tid; 359 360 /* Make sure queue info is correct even though we overwrite it */ 361 WARN(mvm->queue_info[queue].tid_bitmap, 362 "TXQ #%d info out-of-sync - tids=0x%x\n", 363 queue, mvm->queue_info[queue].tid_bitmap); 364 365 /* If we are here - the queue is freed and we can zero out these vals */ 366 mvm->queue_info[queue].tid_bitmap = 0; 367 368 if (sta) { 369 struct iwl_mvm_txq *mvmtxq = 370 iwl_mvm_txq_from_tid(sta, tid); 371 372 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 373 } 374 375 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 376 mvm->queue_info[queue].reserved = false; 377 378 iwl_trans_txq_disable(mvm->trans, queue, false); 379 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 380 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 381 382 if (ret) 383 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 384 queue, ret); 385 return ret; 386 } 387 388 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 389 { 390 struct ieee80211_sta *sta; 391 struct iwl_mvm_sta *mvmsta; 392 unsigned long tid_bitmap; 393 unsigned long agg_tids = 0; 394 u8 sta_id; 395 int tid; 396 397 lockdep_assert_held(&mvm->mutex); 398 399 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 400 return -EINVAL; 401 402 sta_id = mvm->queue_info[queue].ra_sta_id; 403 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 404 405 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 406 lockdep_is_held(&mvm->mutex)); 407 408 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 409 return -EINVAL; 410 411 mvmsta = iwl_mvm_sta_from_mac80211(sta); 412 413 spin_lock_bh(&mvmsta->lock); 414 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 415 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 416 agg_tids |= BIT(tid); 417 } 418 spin_unlock_bh(&mvmsta->lock); 419 420 return agg_tids; 421 } 422 423 /* 424 * Remove a queue from a station's resources. 425 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 426 * doesn't disable the queue 427 */ 428 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 429 { 430 struct ieee80211_sta *sta; 431 struct iwl_mvm_sta *mvmsta; 432 unsigned long tid_bitmap; 433 unsigned long disable_agg_tids = 0; 434 u8 sta_id; 435 int tid; 436 437 lockdep_assert_held(&mvm->mutex); 438 439 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 440 return -EINVAL; 441 442 sta_id = mvm->queue_info[queue].ra_sta_id; 443 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 444 445 rcu_read_lock(); 446 447 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 448 449 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 450 rcu_read_unlock(); 451 return 0; 452 } 453 454 mvmsta = iwl_mvm_sta_from_mac80211(sta); 455 456 spin_lock_bh(&mvmsta->lock); 457 /* Unmap MAC queues and TIDs from this queue */ 458 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 459 struct iwl_mvm_txq *mvmtxq = 460 iwl_mvm_txq_from_tid(sta, tid); 461 462 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 463 disable_agg_tids |= BIT(tid); 464 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 465 466 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 467 } 468 469 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 470 spin_unlock_bh(&mvmsta->lock); 471 472 rcu_read_unlock(); 473 474 /* 475 * The TX path may have been using this TXQ_ID from the tid_data, 476 * so make sure it's no longer running so that we can safely reuse 477 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 478 * above, but nothing guarantees we've stopped using them. Thus, 479 * without this, we could get to iwl_mvm_disable_txq() and remove 480 * the queue while still sending frames to it. 481 */ 482 synchronize_net(); 483 484 return disable_agg_tids; 485 } 486 487 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 488 struct ieee80211_sta *old_sta, 489 u8 new_sta_id) 490 { 491 struct iwl_mvm_sta *mvmsta; 492 u8 sta_id, tid; 493 unsigned long disable_agg_tids = 0; 494 bool same_sta; 495 u16 queue_tmp = queue; 496 int ret; 497 498 lockdep_assert_held(&mvm->mutex); 499 500 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 501 return -EINVAL; 502 503 sta_id = mvm->queue_info[queue].ra_sta_id; 504 tid = mvm->queue_info[queue].txq_tid; 505 506 same_sta = sta_id == new_sta_id; 507 508 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 509 if (WARN_ON(!mvmsta)) 510 return -EINVAL; 511 512 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 513 /* Disable the queue */ 514 if (disable_agg_tids) 515 iwl_mvm_invalidate_sta_queue(mvm, queue, 516 disable_agg_tids, false); 517 518 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid, 0); 519 if (ret) { 520 IWL_ERR(mvm, 521 "Failed to free inactive queue %d (ret=%d)\n", 522 queue, ret); 523 524 return ret; 525 } 526 527 /* If TXQ is allocated to another STA, update removal in FW */ 528 if (!same_sta) 529 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 530 531 return 0; 532 } 533 534 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 535 unsigned long tfd_queue_mask, u8 ac) 536 { 537 int queue = 0; 538 u8 ac_to_queue[IEEE80211_NUM_ACS]; 539 int i; 540 541 /* 542 * This protects us against grabbing a queue that's being reconfigured 543 * by the inactivity checker. 544 */ 545 lockdep_assert_held(&mvm->mutex); 546 547 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 548 return -EINVAL; 549 550 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 551 552 /* See what ACs the existing queues for this STA have */ 553 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 554 /* Only DATA queues can be shared */ 555 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 556 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 557 continue; 558 559 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 560 } 561 562 /* 563 * The queue to share is chosen only from DATA queues as follows (in 564 * descending priority): 565 * 1. An AC_BE queue 566 * 2. Same AC queue 567 * 3. Highest AC queue that is lower than new AC 568 * 4. Any existing AC (there always is at least 1 DATA queue) 569 */ 570 571 /* Priority 1: An AC_BE queue */ 572 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 573 queue = ac_to_queue[IEEE80211_AC_BE]; 574 /* Priority 2: Same AC queue */ 575 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 576 queue = ac_to_queue[ac]; 577 /* Priority 3a: If new AC is VO and VI exists - use VI */ 578 else if (ac == IEEE80211_AC_VO && 579 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 580 queue = ac_to_queue[IEEE80211_AC_VI]; 581 /* Priority 3b: No BE so only AC less than the new one is BK */ 582 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 583 queue = ac_to_queue[IEEE80211_AC_BK]; 584 /* Priority 4a: No BE nor BK - use VI if exists */ 585 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 586 queue = ac_to_queue[IEEE80211_AC_VI]; 587 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 588 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 589 queue = ac_to_queue[IEEE80211_AC_VO]; 590 591 /* Make sure queue found (or not) is legal */ 592 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 593 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 594 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 595 IWL_ERR(mvm, "No DATA queues available to share\n"); 596 return -ENOSPC; 597 } 598 599 return queue; 600 } 601 602 /* 603 * If a given queue has a higher AC than the TID stream that is being compared 604 * to, the queue needs to be redirected to the lower AC. This function does that 605 * in such a case, otherwise - if no redirection required - it does nothing, 606 * unless the %force param is true. 607 */ 608 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 609 int ac, int ssn, unsigned int wdg_timeout, 610 bool force, struct iwl_mvm_txq *txq) 611 { 612 struct iwl_scd_txq_cfg_cmd cmd = { 613 .scd_queue = queue, 614 .action = SCD_CFG_DISABLE_QUEUE, 615 }; 616 bool shared_queue; 617 int ret; 618 619 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 620 return -EINVAL; 621 622 /* 623 * If the AC is lower than current one - FIFO needs to be redirected to 624 * the lowest one of the streams in the queue. Check if this is needed 625 * here. 626 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 627 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 628 * we need to check if the numerical value of X is LARGER than of Y. 629 */ 630 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 631 IWL_DEBUG_TX_QUEUES(mvm, 632 "No redirection needed on TXQ #%d\n", 633 queue); 634 return 0; 635 } 636 637 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 638 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 639 cmd.tid = mvm->queue_info[queue].txq_tid; 640 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 641 642 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 643 queue, iwl_mvm_ac_to_tx_fifo[ac]); 644 645 /* Stop the queue and wait for it to empty */ 646 txq->stopped = true; 647 648 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 649 if (ret) { 650 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 651 queue); 652 ret = -EIO; 653 goto out; 654 } 655 656 /* Before redirecting the queue we need to de-activate it */ 657 iwl_trans_txq_disable(mvm->trans, queue, false); 658 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 659 if (ret) 660 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 661 ret); 662 663 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 664 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 665 666 /* Update the TID "owner" of the queue */ 667 mvm->queue_info[queue].txq_tid = tid; 668 669 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 670 671 /* Redirect to lower AC */ 672 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 673 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 674 675 /* Update AC marking of the queue */ 676 mvm->queue_info[queue].mac80211_ac = ac; 677 678 /* 679 * Mark queue as shared in transport if shared 680 * Note this has to be done after queue enablement because enablement 681 * can also set this value, and there is no indication there to shared 682 * queues 683 */ 684 if (shared_queue) 685 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 686 687 out: 688 /* Continue using the queue */ 689 txq->stopped = false; 690 691 return ret; 692 } 693 694 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 695 u8 minq, u8 maxq) 696 { 697 int i; 698 699 lockdep_assert_held(&mvm->mutex); 700 701 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 702 "max queue %d >= num_of_queues (%d)", maxq, 703 mvm->trans->trans_cfg->base_params->num_of_queues)) 704 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 705 706 /* This should not be hit with new TX path */ 707 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 708 return -ENOSPC; 709 710 /* Start by looking for a free queue */ 711 for (i = minq; i <= maxq; i++) 712 if (mvm->queue_info[i].tid_bitmap == 0 && 713 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 714 return i; 715 716 return -ENOSPC; 717 } 718 719 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 720 u8 sta_id, u8 tid, unsigned int timeout) 721 { 722 int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, 723 mvm->trans->cfg->min_256_ba_txq_size); 724 725 if (tid == IWL_MAX_TID_COUNT) { 726 tid = IWL_MGMT_TID; 727 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 728 mvm->trans->cfg->min_txq_size); 729 } 730 731 do { 732 __le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); 733 734 queue = iwl_trans_txq_alloc(mvm->trans, enable, 735 sta_id, tid, SCD_QUEUE_CFG, 736 size, timeout); 737 738 if (queue < 0) 739 IWL_DEBUG_TX_QUEUES(mvm, 740 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 741 size, sta_id, tid, queue); 742 size /= 2; 743 } while (queue < 0 && size >= 16); 744 745 if (queue < 0) 746 return queue; 747 748 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 749 queue, sta_id, tid); 750 751 return queue; 752 } 753 754 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 755 struct ieee80211_sta *sta, u8 ac, 756 int tid) 757 { 758 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 759 struct iwl_mvm_txq *mvmtxq = 760 iwl_mvm_txq_from_tid(sta, tid); 761 unsigned int wdg_timeout = 762 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 763 int queue = -1; 764 765 lockdep_assert_held(&mvm->mutex); 766 767 IWL_DEBUG_TX_QUEUES(mvm, 768 "Allocating queue for sta %d on tid %d\n", 769 mvmsta->sta_id, tid); 770 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 771 if (queue < 0) 772 return queue; 773 774 mvmtxq->txq_id = queue; 775 mvm->tvqm_info[queue].txq_tid = tid; 776 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 777 778 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 779 780 spin_lock_bh(&mvmsta->lock); 781 mvmsta->tid_data[tid].txq_id = queue; 782 spin_unlock_bh(&mvmsta->lock); 783 784 return 0; 785 } 786 787 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 788 struct ieee80211_sta *sta, 789 int queue, u8 sta_id, u8 tid) 790 { 791 bool enable_queue = true; 792 793 /* Make sure this TID isn't already enabled */ 794 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 795 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 796 queue, tid); 797 return false; 798 } 799 800 /* Update mappings and refcounts */ 801 if (mvm->queue_info[queue].tid_bitmap) 802 enable_queue = false; 803 804 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 805 mvm->queue_info[queue].ra_sta_id = sta_id; 806 807 if (enable_queue) { 808 if (tid != IWL_MAX_TID_COUNT) 809 mvm->queue_info[queue].mac80211_ac = 810 tid_to_mac80211_ac[tid]; 811 else 812 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 813 814 mvm->queue_info[queue].txq_tid = tid; 815 } 816 817 if (sta) { 818 struct iwl_mvm_txq *mvmtxq = 819 iwl_mvm_txq_from_tid(sta, tid); 820 821 mvmtxq->txq_id = queue; 822 } 823 824 IWL_DEBUG_TX_QUEUES(mvm, 825 "Enabling TXQ #%d tids=0x%x\n", 826 queue, mvm->queue_info[queue].tid_bitmap); 827 828 return enable_queue; 829 } 830 831 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 832 int queue, u16 ssn, 833 const struct iwl_trans_txq_scd_cfg *cfg, 834 unsigned int wdg_timeout) 835 { 836 struct iwl_scd_txq_cfg_cmd cmd = { 837 .scd_queue = queue, 838 .action = SCD_CFG_ENABLE_QUEUE, 839 .window = cfg->frame_limit, 840 .sta_id = cfg->sta_id, 841 .ssn = cpu_to_le16(ssn), 842 .tx_fifo = cfg->fifo, 843 .aggregate = cfg->aggregate, 844 .tid = cfg->tid, 845 }; 846 bool inc_ssn; 847 848 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 849 return false; 850 851 /* Send the enabling command if we need to */ 852 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 853 return false; 854 855 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 856 NULL, wdg_timeout); 857 if (inc_ssn) 858 le16_add_cpu(&cmd.ssn, 1); 859 860 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 861 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 862 863 return inc_ssn; 864 } 865 866 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 867 { 868 struct iwl_scd_txq_cfg_cmd cmd = { 869 .scd_queue = queue, 870 .action = SCD_CFG_UPDATE_QUEUE_TID, 871 }; 872 int tid; 873 unsigned long tid_bitmap; 874 int ret; 875 876 lockdep_assert_held(&mvm->mutex); 877 878 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 879 return; 880 881 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 882 883 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 884 return; 885 886 /* Find any TID for queue */ 887 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 888 cmd.tid = tid; 889 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 890 891 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 892 if (ret) { 893 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 894 queue, ret); 895 return; 896 } 897 898 mvm->queue_info[queue].txq_tid = tid; 899 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 900 queue, tid); 901 } 902 903 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 904 { 905 struct ieee80211_sta *sta; 906 struct iwl_mvm_sta *mvmsta; 907 u8 sta_id; 908 int tid = -1; 909 unsigned long tid_bitmap; 910 unsigned int wdg_timeout; 911 int ssn; 912 int ret = true; 913 914 /* queue sharing is disabled on new TX path */ 915 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 916 return; 917 918 lockdep_assert_held(&mvm->mutex); 919 920 sta_id = mvm->queue_info[queue].ra_sta_id; 921 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 922 923 /* Find TID for queue, and make sure it is the only one on the queue */ 924 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 925 if (tid_bitmap != BIT(tid)) { 926 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 927 queue, tid_bitmap); 928 return; 929 } 930 931 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 932 tid); 933 934 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 935 lockdep_is_held(&mvm->mutex)); 936 937 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 938 return; 939 940 mvmsta = iwl_mvm_sta_from_mac80211(sta); 941 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 942 943 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 944 945 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 946 tid_to_mac80211_ac[tid], ssn, 947 wdg_timeout, true, 948 iwl_mvm_txq_from_tid(sta, tid)); 949 if (ret) { 950 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 951 return; 952 } 953 954 /* If aggs should be turned back on - do it */ 955 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 956 struct iwl_mvm_add_sta_cmd cmd = {0}; 957 958 mvmsta->tid_disable_agg &= ~BIT(tid); 959 960 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 961 cmd.sta_id = mvmsta->sta_id; 962 cmd.add_modify = STA_MODE_MODIFY; 963 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 964 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 965 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 966 967 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 968 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 969 if (!ret) { 970 IWL_DEBUG_TX_QUEUES(mvm, 971 "TXQ #%d is now aggregated again\n", 972 queue); 973 974 /* Mark queue intenally as aggregating again */ 975 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 976 } 977 } 978 979 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 980 } 981 982 /* 983 * Remove inactive TIDs of a given queue. 984 * If all queue TIDs are inactive - mark the queue as inactive 985 * If only some the queue TIDs are inactive - unmap them from the queue 986 * 987 * Returns %true if all TIDs were removed and the queue could be reused. 988 */ 989 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 990 struct iwl_mvm_sta *mvmsta, int queue, 991 unsigned long tid_bitmap, 992 unsigned long *unshare_queues, 993 unsigned long *changetid_queues) 994 { 995 int tid; 996 997 lockdep_assert_held(&mvmsta->lock); 998 lockdep_assert_held(&mvm->mutex); 999 1000 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1001 return false; 1002 1003 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1004 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1005 /* If some TFDs are still queued - don't mark TID as inactive */ 1006 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1007 tid_bitmap &= ~BIT(tid); 1008 1009 /* Don't mark as inactive any TID that has an active BA */ 1010 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1011 tid_bitmap &= ~BIT(tid); 1012 } 1013 1014 /* If all TIDs in the queue are inactive - return it can be reused */ 1015 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1016 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1017 return true; 1018 } 1019 1020 /* 1021 * If we are here, this is a shared queue and not all TIDs timed-out. 1022 * Remove the ones that did. 1023 */ 1024 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1025 u16 tid_bitmap; 1026 1027 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1028 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1029 1030 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1031 1032 /* 1033 * We need to take into account a situation in which a TXQ was 1034 * allocated to TID x, and then turned shared by adding TIDs y 1035 * and z. If TID x becomes inactive and is removed from the TXQ, 1036 * ownership must be given to one of the remaining TIDs. 1037 * This is mainly because if TID x continues - a new queue can't 1038 * be allocated for it as long as it is an owner of another TXQ. 1039 * 1040 * Mark this queue in the right bitmap, we'll send the command 1041 * to the firmware later. 1042 */ 1043 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1044 set_bit(queue, changetid_queues); 1045 1046 IWL_DEBUG_TX_QUEUES(mvm, 1047 "Removing inactive TID %d from shared Q:%d\n", 1048 tid, queue); 1049 } 1050 1051 IWL_DEBUG_TX_QUEUES(mvm, 1052 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1053 mvm->queue_info[queue].tid_bitmap); 1054 1055 /* 1056 * There may be different TIDs with the same mac queues, so make 1057 * sure all TIDs have existing corresponding mac queues enabled 1058 */ 1059 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1060 1061 /* If the queue is marked as shared - "unshare" it */ 1062 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1063 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1064 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1065 queue); 1066 set_bit(queue, unshare_queues); 1067 } 1068 1069 return false; 1070 } 1071 1072 /* 1073 * Check for inactivity - this includes checking if any queue 1074 * can be unshared and finding one (and only one) that can be 1075 * reused. 1076 * This function is also invoked as a sort of clean-up task, 1077 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1078 * 1079 * Returns the queue number, or -ENOSPC. 1080 */ 1081 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1082 { 1083 unsigned long now = jiffies; 1084 unsigned long unshare_queues = 0; 1085 unsigned long changetid_queues = 0; 1086 int i, ret, free_queue = -ENOSPC; 1087 struct ieee80211_sta *queue_owner = NULL; 1088 1089 lockdep_assert_held(&mvm->mutex); 1090 1091 if (iwl_mvm_has_new_tx_api(mvm)) 1092 return -ENOSPC; 1093 1094 rcu_read_lock(); 1095 1096 /* we skip the CMD queue below by starting at 1 */ 1097 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1098 1099 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1100 struct ieee80211_sta *sta; 1101 struct iwl_mvm_sta *mvmsta; 1102 u8 sta_id; 1103 int tid; 1104 unsigned long inactive_tid_bitmap = 0; 1105 unsigned long queue_tid_bitmap; 1106 1107 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1108 if (!queue_tid_bitmap) 1109 continue; 1110 1111 /* If TXQ isn't in active use anyway - nothing to do here... */ 1112 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1113 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1114 continue; 1115 1116 /* Check to see if there are inactive TIDs on this queue */ 1117 for_each_set_bit(tid, &queue_tid_bitmap, 1118 IWL_MAX_TID_COUNT + 1) { 1119 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1120 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1121 continue; 1122 1123 inactive_tid_bitmap |= BIT(tid); 1124 } 1125 1126 /* If all TIDs are active - finish check on this queue */ 1127 if (!inactive_tid_bitmap) 1128 continue; 1129 1130 /* 1131 * If we are here - the queue hadn't been served recently and is 1132 * in use 1133 */ 1134 1135 sta_id = mvm->queue_info[i].ra_sta_id; 1136 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1137 1138 /* 1139 * If the STA doesn't exist anymore, it isn't an error. It could 1140 * be that it was removed since getting the queues, and in this 1141 * case it should've inactivated its queues anyway. 1142 */ 1143 if (IS_ERR_OR_NULL(sta)) 1144 continue; 1145 1146 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1147 1148 spin_lock_bh(&mvmsta->lock); 1149 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1150 inactive_tid_bitmap, 1151 &unshare_queues, 1152 &changetid_queues); 1153 if (ret && free_queue < 0) { 1154 queue_owner = sta; 1155 free_queue = i; 1156 } 1157 /* only unlock sta lock - we still need the queue info lock */ 1158 spin_unlock_bh(&mvmsta->lock); 1159 } 1160 1161 1162 /* Reconfigure queues requiring reconfiguation */ 1163 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1164 iwl_mvm_unshare_queue(mvm, i); 1165 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1166 iwl_mvm_change_queue_tid(mvm, i); 1167 1168 rcu_read_unlock(); 1169 1170 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1171 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1172 alloc_for_sta); 1173 if (ret) 1174 return ret; 1175 } 1176 1177 return free_queue; 1178 } 1179 1180 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1181 struct ieee80211_sta *sta, u8 ac, int tid) 1182 { 1183 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1184 struct iwl_trans_txq_scd_cfg cfg = { 1185 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1186 .sta_id = mvmsta->sta_id, 1187 .tid = tid, 1188 .frame_limit = IWL_FRAME_LIMIT, 1189 }; 1190 unsigned int wdg_timeout = 1191 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1192 int queue = -1; 1193 u16 queue_tmp; 1194 unsigned long disable_agg_tids = 0; 1195 enum iwl_mvm_agg_state queue_state; 1196 bool shared_queue = false, inc_ssn; 1197 int ssn; 1198 unsigned long tfd_queue_mask; 1199 int ret; 1200 1201 lockdep_assert_held(&mvm->mutex); 1202 1203 if (iwl_mvm_has_new_tx_api(mvm)) 1204 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1205 1206 spin_lock_bh(&mvmsta->lock); 1207 tfd_queue_mask = mvmsta->tfd_queue_msk; 1208 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1209 spin_unlock_bh(&mvmsta->lock); 1210 1211 if (tid == IWL_MAX_TID_COUNT) { 1212 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1213 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1214 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1215 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1216 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1217 queue); 1218 1219 /* If no such queue is found, we'll use a DATA queue instead */ 1220 } 1221 1222 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1223 (mvm->queue_info[mvmsta->reserved_queue].status == 1224 IWL_MVM_QUEUE_RESERVED)) { 1225 queue = mvmsta->reserved_queue; 1226 mvm->queue_info[queue].reserved = true; 1227 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1228 } 1229 1230 if (queue < 0) 1231 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1232 IWL_MVM_DQA_MIN_DATA_QUEUE, 1233 IWL_MVM_DQA_MAX_DATA_QUEUE); 1234 if (queue < 0) { 1235 /* try harder - perhaps kill an inactive queue */ 1236 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1237 } 1238 1239 /* No free queue - we'll have to share */ 1240 if (queue <= 0) { 1241 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1242 if (queue > 0) { 1243 shared_queue = true; 1244 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1245 } 1246 } 1247 1248 /* 1249 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1250 * to make sure no one else takes it. 1251 * This will allow avoiding re-acquiring the lock at the end of the 1252 * configuration. On error we'll mark it back as free. 1253 */ 1254 if (queue > 0 && !shared_queue) 1255 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1256 1257 /* This shouldn't happen - out of queues */ 1258 if (WARN_ON(queue <= 0)) { 1259 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1260 tid, cfg.sta_id); 1261 return queue; 1262 } 1263 1264 /* 1265 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1266 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1267 * as aggregatable. 1268 * Mark all DATA queues as allowing to be aggregated at some point 1269 */ 1270 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1271 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1272 1273 IWL_DEBUG_TX_QUEUES(mvm, 1274 "Allocating %squeue #%d to sta %d on tid %d\n", 1275 shared_queue ? "shared " : "", queue, 1276 mvmsta->sta_id, tid); 1277 1278 if (shared_queue) { 1279 /* Disable any open aggs on this queue */ 1280 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1281 1282 if (disable_agg_tids) { 1283 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1284 queue); 1285 iwl_mvm_invalidate_sta_queue(mvm, queue, 1286 disable_agg_tids, false); 1287 } 1288 } 1289 1290 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1291 1292 /* 1293 * Mark queue as shared in transport if shared 1294 * Note this has to be done after queue enablement because enablement 1295 * can also set this value, and there is no indication there to shared 1296 * queues 1297 */ 1298 if (shared_queue) 1299 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1300 1301 spin_lock_bh(&mvmsta->lock); 1302 /* 1303 * This looks racy, but it is not. We have only one packet for 1304 * this ra/tid in our Tx path since we stop the Qdisc when we 1305 * need to allocate a new TFD queue. 1306 */ 1307 if (inc_ssn) { 1308 mvmsta->tid_data[tid].seq_number += 0x10; 1309 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1310 } 1311 mvmsta->tid_data[tid].txq_id = queue; 1312 mvmsta->tfd_queue_msk |= BIT(queue); 1313 queue_state = mvmsta->tid_data[tid].state; 1314 1315 if (mvmsta->reserved_queue == queue) 1316 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1317 spin_unlock_bh(&mvmsta->lock); 1318 1319 if (!shared_queue) { 1320 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1321 if (ret) 1322 goto out_err; 1323 1324 /* If we need to re-enable aggregations... */ 1325 if (queue_state == IWL_AGG_ON) { 1326 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1327 if (ret) 1328 goto out_err; 1329 } 1330 } else { 1331 /* Redirect queue, if needed */ 1332 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1333 wdg_timeout, false, 1334 iwl_mvm_txq_from_tid(sta, tid)); 1335 if (ret) 1336 goto out_err; 1337 } 1338 1339 return 0; 1340 1341 out_err: 1342 queue_tmp = queue; 1343 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid, 0); 1344 1345 return ret; 1346 } 1347 1348 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1349 { 1350 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1351 add_stream_wk); 1352 1353 mutex_lock(&mvm->mutex); 1354 1355 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1356 1357 while (!list_empty(&mvm->add_stream_txqs)) { 1358 struct iwl_mvm_txq *mvmtxq; 1359 struct ieee80211_txq *txq; 1360 u8 tid; 1361 1362 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1363 struct iwl_mvm_txq, list); 1364 1365 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1366 drv_priv); 1367 tid = txq->tid; 1368 if (tid == IEEE80211_NUM_TIDS) 1369 tid = IWL_MAX_TID_COUNT; 1370 1371 /* 1372 * We can't really do much here, but if this fails we can't 1373 * transmit anyway - so just don't transmit the frame etc. 1374 * and let them back up ... we've tried our best to allocate 1375 * a queue in the function itself. 1376 */ 1377 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1378 list_del_init(&mvmtxq->list); 1379 continue; 1380 } 1381 1382 list_del_init(&mvmtxq->list); 1383 local_bh_disable(); 1384 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1385 local_bh_enable(); 1386 } 1387 1388 mutex_unlock(&mvm->mutex); 1389 } 1390 1391 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1392 struct ieee80211_sta *sta, 1393 enum nl80211_iftype vif_type) 1394 { 1395 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1396 int queue; 1397 1398 /* queue reserving is disabled on new TX path */ 1399 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1400 return 0; 1401 1402 /* run the general cleanup/unsharing of queues */ 1403 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1404 1405 /* Make sure we have free resources for this STA */ 1406 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1407 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1408 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1409 IWL_MVM_QUEUE_FREE)) 1410 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1411 else 1412 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1413 IWL_MVM_DQA_MIN_DATA_QUEUE, 1414 IWL_MVM_DQA_MAX_DATA_QUEUE); 1415 if (queue < 0) { 1416 /* try again - this time kick out a queue if needed */ 1417 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1418 if (queue < 0) { 1419 IWL_ERR(mvm, "No available queues for new station\n"); 1420 return -ENOSPC; 1421 } 1422 } 1423 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1424 1425 mvmsta->reserved_queue = queue; 1426 1427 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1428 queue, mvmsta->sta_id); 1429 1430 return 0; 1431 } 1432 1433 /* 1434 * In DQA mode, after a HW restart the queues should be allocated as before, in 1435 * order to avoid race conditions when there are shared queues. This function 1436 * does the re-mapping and queue allocation. 1437 * 1438 * Note that re-enabling aggregations isn't done in this function. 1439 */ 1440 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1441 struct ieee80211_sta *sta) 1442 { 1443 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1444 unsigned int wdg = 1445 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1446 int i; 1447 struct iwl_trans_txq_scd_cfg cfg = { 1448 .sta_id = mvm_sta->sta_id, 1449 .frame_limit = IWL_FRAME_LIMIT, 1450 }; 1451 1452 /* Make sure reserved queue is still marked as such (if allocated) */ 1453 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1454 mvm->queue_info[mvm_sta->reserved_queue].status = 1455 IWL_MVM_QUEUE_RESERVED; 1456 1457 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1458 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1459 int txq_id = tid_data->txq_id; 1460 int ac; 1461 1462 if (txq_id == IWL_MVM_INVALID_QUEUE) 1463 continue; 1464 1465 ac = tid_to_mac80211_ac[i]; 1466 1467 if (iwl_mvm_has_new_tx_api(mvm)) { 1468 IWL_DEBUG_TX_QUEUES(mvm, 1469 "Re-mapping sta %d tid %d\n", 1470 mvm_sta->sta_id, i); 1471 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1472 i, wdg); 1473 /* 1474 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1475 * to try again later, we have no other good way of 1476 * failing here 1477 */ 1478 if (txq_id < 0) 1479 txq_id = IWL_MVM_INVALID_QUEUE; 1480 tid_data->txq_id = txq_id; 1481 1482 /* 1483 * Since we don't set the seq number after reset, and HW 1484 * sets it now, FW reset will cause the seq num to start 1485 * at 0 again, so driver will need to update it 1486 * internally as well, so it keeps in sync with real val 1487 */ 1488 tid_data->seq_number = 0; 1489 } else { 1490 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1491 1492 cfg.tid = i; 1493 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1494 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1495 txq_id == 1496 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1497 1498 IWL_DEBUG_TX_QUEUES(mvm, 1499 "Re-mapping sta %d tid %d to queue %d\n", 1500 mvm_sta->sta_id, i, txq_id); 1501 1502 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1503 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1504 } 1505 } 1506 } 1507 1508 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1509 struct iwl_mvm_int_sta *sta, 1510 const u8 *addr, 1511 u16 mac_id, u16 color) 1512 { 1513 struct iwl_mvm_add_sta_cmd cmd; 1514 int ret; 1515 u32 status = ADD_STA_SUCCESS; 1516 1517 lockdep_assert_held(&mvm->mutex); 1518 1519 memset(&cmd, 0, sizeof(cmd)); 1520 cmd.sta_id = sta->sta_id; 1521 1522 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 1523 0) >= 12 && 1524 sta->type == IWL_STA_AUX_ACTIVITY) 1525 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1526 else 1527 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1528 color)); 1529 1530 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1531 cmd.station_type = sta->type; 1532 1533 if (!iwl_mvm_has_new_tx_api(mvm)) 1534 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1535 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1536 1537 if (addr) 1538 memcpy(cmd.addr, addr, ETH_ALEN); 1539 1540 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1541 iwl_mvm_add_sta_cmd_size(mvm), 1542 &cmd, &status); 1543 if (ret) 1544 return ret; 1545 1546 switch (status & IWL_ADD_STA_STATUS_MASK) { 1547 case ADD_STA_SUCCESS: 1548 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1549 return 0; 1550 default: 1551 ret = -EIO; 1552 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1553 status); 1554 break; 1555 } 1556 return ret; 1557 } 1558 1559 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1560 struct ieee80211_vif *vif, 1561 struct ieee80211_sta *sta) 1562 { 1563 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1564 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1565 struct iwl_mvm_rxq_dup_data *dup_data; 1566 int i, ret, sta_id; 1567 bool sta_update = false; 1568 unsigned int sta_flags = 0; 1569 1570 lockdep_assert_held(&mvm->mutex); 1571 1572 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1573 sta_id = iwl_mvm_find_free_sta_id(mvm, 1574 ieee80211_vif_type_p2p(vif)); 1575 else 1576 sta_id = mvm_sta->sta_id; 1577 1578 if (sta_id == IWL_MVM_INVALID_STA) 1579 return -ENOSPC; 1580 1581 spin_lock_init(&mvm_sta->lock); 1582 1583 /* if this is a HW restart re-alloc existing queues */ 1584 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1585 struct iwl_mvm_int_sta tmp_sta = { 1586 .sta_id = sta_id, 1587 .type = mvm_sta->sta_type, 1588 }; 1589 1590 /* 1591 * First add an empty station since allocating 1592 * a queue requires a valid station 1593 */ 1594 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1595 mvmvif->id, mvmvif->color); 1596 if (ret) 1597 goto err; 1598 1599 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1600 sta_update = true; 1601 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1602 goto update_fw; 1603 } 1604 1605 mvm_sta->sta_id = sta_id; 1606 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1607 mvmvif->color); 1608 mvm_sta->vif = vif; 1609 if (!mvm->trans->trans_cfg->gen2) 1610 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1611 else 1612 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1613 mvm_sta->tx_protection = 0; 1614 mvm_sta->tt_tx_protection = false; 1615 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1616 1617 /* HW restart, don't assume the memory has been zeroed */ 1618 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1619 mvm_sta->tfd_queue_msk = 0; 1620 1621 /* for HW restart - reset everything but the sequence number */ 1622 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1623 u16 seq = mvm_sta->tid_data[i].seq_number; 1624 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1625 mvm_sta->tid_data[i].seq_number = seq; 1626 1627 /* 1628 * Mark all queues for this STA as unallocated and defer TX 1629 * frames until the queue is allocated 1630 */ 1631 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1632 } 1633 1634 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1635 struct iwl_mvm_txq *mvmtxq = 1636 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1637 1638 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1639 INIT_LIST_HEAD(&mvmtxq->list); 1640 atomic_set(&mvmtxq->tx_request, 0); 1641 } 1642 1643 mvm_sta->agg_tids = 0; 1644 1645 if (iwl_mvm_has_new_rx_api(mvm) && 1646 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1647 int q; 1648 1649 dup_data = kcalloc(mvm->trans->num_rx_queues, 1650 sizeof(*dup_data), GFP_KERNEL); 1651 if (!dup_data) 1652 return -ENOMEM; 1653 /* 1654 * Initialize all the last_seq values to 0xffff which can never 1655 * compare equal to the frame's seq_ctrl in the check in 1656 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1657 * number and fragmented packets don't reach that function. 1658 * 1659 * This thus allows receiving a packet with seqno 0 and the 1660 * retry bit set as the very first packet on a new TID. 1661 */ 1662 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1663 memset(dup_data[q].last_seq, 0xff, 1664 sizeof(dup_data[q].last_seq)); 1665 mvm_sta->dup_data = dup_data; 1666 } 1667 1668 if (!iwl_mvm_has_new_tx_api(mvm)) { 1669 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1670 ieee80211_vif_type_p2p(vif)); 1671 if (ret) 1672 goto err; 1673 } 1674 1675 /* 1676 * if rs is registered with mac80211, then "add station" will be handled 1677 * via the corresponding ops, otherwise need to notify rate scaling here 1678 */ 1679 if (iwl_mvm_has_tlc_offload(mvm)) 1680 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1681 else 1682 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1683 1684 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1685 1686 update_fw: 1687 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1688 if (ret) 1689 goto err; 1690 1691 if (vif->type == NL80211_IFTYPE_STATION) { 1692 if (!sta->tdls) { 1693 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1694 mvmvif->ap_sta_id = sta_id; 1695 } else { 1696 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1697 } 1698 } 1699 1700 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1701 1702 return 0; 1703 1704 err: 1705 return ret; 1706 } 1707 1708 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1709 bool drain) 1710 { 1711 struct iwl_mvm_add_sta_cmd cmd = {}; 1712 int ret; 1713 u32 status; 1714 1715 lockdep_assert_held(&mvm->mutex); 1716 1717 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1718 cmd.sta_id = mvmsta->sta_id; 1719 cmd.add_modify = STA_MODE_MODIFY; 1720 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1721 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1722 1723 status = ADD_STA_SUCCESS; 1724 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1725 iwl_mvm_add_sta_cmd_size(mvm), 1726 &cmd, &status); 1727 if (ret) 1728 return ret; 1729 1730 switch (status & IWL_ADD_STA_STATUS_MASK) { 1731 case ADD_STA_SUCCESS: 1732 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1733 mvmsta->sta_id); 1734 break; 1735 default: 1736 ret = -EIO; 1737 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n", 1738 mvmsta->sta_id, status); 1739 break; 1740 } 1741 1742 return ret; 1743 } 1744 1745 /* 1746 * Remove a station from the FW table. Before sending the command to remove 1747 * the station validate that the station is indeed known to the driver (sanity 1748 * only). 1749 */ 1750 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1751 { 1752 struct ieee80211_sta *sta; 1753 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1754 .sta_id = sta_id, 1755 }; 1756 int ret; 1757 1758 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1759 lockdep_is_held(&mvm->mutex)); 1760 1761 /* Note: internal stations are marked as error values */ 1762 if (!sta) { 1763 IWL_ERR(mvm, "Invalid station id\n"); 1764 return -EINVAL; 1765 } 1766 1767 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1768 sizeof(rm_sta_cmd), &rm_sta_cmd); 1769 if (ret) { 1770 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1771 return ret; 1772 } 1773 1774 return 0; 1775 } 1776 1777 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1778 struct ieee80211_vif *vif, 1779 struct ieee80211_sta *sta) 1780 { 1781 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1782 int i; 1783 1784 lockdep_assert_held(&mvm->mutex); 1785 1786 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1787 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1788 continue; 1789 1790 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i, 1791 0); 1792 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1793 } 1794 1795 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1796 struct iwl_mvm_txq *mvmtxq = 1797 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1798 1799 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1800 } 1801 } 1802 1803 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1804 struct iwl_mvm_sta *mvm_sta) 1805 { 1806 int i; 1807 1808 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1809 u16 txq_id; 1810 int ret; 1811 1812 spin_lock_bh(&mvm_sta->lock); 1813 txq_id = mvm_sta->tid_data[i].txq_id; 1814 spin_unlock_bh(&mvm_sta->lock); 1815 1816 if (txq_id == IWL_MVM_INVALID_QUEUE) 1817 continue; 1818 1819 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1820 if (ret) 1821 return ret; 1822 } 1823 1824 return 0; 1825 } 1826 1827 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1828 struct ieee80211_vif *vif, 1829 struct ieee80211_sta *sta) 1830 { 1831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1832 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1833 u8 sta_id = mvm_sta->sta_id; 1834 int ret; 1835 1836 lockdep_assert_held(&mvm->mutex); 1837 1838 if (iwl_mvm_has_new_rx_api(mvm)) { 1839 kfree(mvm_sta->dup_data); 1840 mvm_sta->dup_data = NULL; 1841 } 1842 1843 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1844 if (ret) 1845 return ret; 1846 1847 /* flush its queues here since we are freeing mvm_sta */ 1848 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1849 if (ret) 1850 return ret; 1851 if (iwl_mvm_has_new_tx_api(mvm)) { 1852 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1853 } else { 1854 u32 q_mask = mvm_sta->tfd_queue_msk; 1855 1856 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1857 q_mask); 1858 } 1859 if (ret) 1860 return ret; 1861 1862 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1863 1864 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1865 1866 /* If there is a TXQ still marked as reserved - free it */ 1867 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1868 u8 reserved_txq = mvm_sta->reserved_queue; 1869 enum iwl_mvm_queue_status *status; 1870 1871 /* 1872 * If no traffic has gone through the reserved TXQ - it 1873 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1874 * should be manually marked as free again 1875 */ 1876 status = &mvm->queue_info[reserved_txq].status; 1877 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1878 (*status != IWL_MVM_QUEUE_FREE), 1879 "sta_id %d reserved txq %d status %d", 1880 sta_id, reserved_txq, *status)) 1881 return -EINVAL; 1882 1883 *status = IWL_MVM_QUEUE_FREE; 1884 } 1885 1886 if (vif->type == NL80211_IFTYPE_STATION && 1887 mvmvif->ap_sta_id == sta_id) { 1888 /* if associated - we can't remove the AP STA now */ 1889 if (vif->bss_conf.assoc) 1890 return ret; 1891 1892 /* unassoc - go ahead - remove the AP STA now */ 1893 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1894 } 1895 1896 /* 1897 * This shouldn't happen - the TDLS channel switch should be canceled 1898 * before the STA is removed. 1899 */ 1900 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1901 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1902 cancel_delayed_work(&mvm->tdls_cs.dwork); 1903 } 1904 1905 /* 1906 * Make sure that the tx response code sees the station as -EBUSY and 1907 * calls the drain worker. 1908 */ 1909 spin_lock_bh(&mvm_sta->lock); 1910 spin_unlock_bh(&mvm_sta->lock); 1911 1912 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1913 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1914 1915 return ret; 1916 } 1917 1918 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1919 struct ieee80211_vif *vif, 1920 u8 sta_id) 1921 { 1922 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1923 1924 lockdep_assert_held(&mvm->mutex); 1925 1926 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1927 return ret; 1928 } 1929 1930 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1931 struct iwl_mvm_int_sta *sta, 1932 u32 qmask, enum nl80211_iftype iftype, 1933 enum iwl_sta_type type) 1934 { 1935 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1936 sta->sta_id == IWL_MVM_INVALID_STA) { 1937 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1938 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1939 return -ENOSPC; 1940 } 1941 1942 sta->tfd_queue_msk = qmask; 1943 sta->type = type; 1944 1945 /* put a non-NULL value so iterating over the stations won't stop */ 1946 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1947 return 0; 1948 } 1949 1950 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1951 { 1952 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1953 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1954 sta->sta_id = IWL_MVM_INVALID_STA; 1955 } 1956 1957 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 1958 u8 sta_id, u8 fifo) 1959 { 1960 unsigned int wdg_timeout = 1961 mvm->trans->trans_cfg->base_params->wd_timeout; 1962 struct iwl_trans_txq_scd_cfg cfg = { 1963 .fifo = fifo, 1964 .sta_id = sta_id, 1965 .tid = IWL_MAX_TID_COUNT, 1966 .aggregate = false, 1967 .frame_limit = IWL_FRAME_LIMIT, 1968 }; 1969 1970 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 1971 1972 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 1973 } 1974 1975 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 1976 { 1977 unsigned int wdg_timeout = 1978 mvm->trans->trans_cfg->base_params->wd_timeout; 1979 1980 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 1981 1982 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 1983 wdg_timeout); 1984 } 1985 1986 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 1987 int maccolor, u8 *addr, 1988 struct iwl_mvm_int_sta *sta, 1989 u16 *queue, int fifo) 1990 { 1991 int ret; 1992 1993 /* Map queue to fifo - needs to happen before adding station */ 1994 if (!iwl_mvm_has_new_tx_api(mvm)) 1995 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 1996 1997 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 1998 if (ret) { 1999 if (!iwl_mvm_has_new_tx_api(mvm)) 2000 iwl_mvm_disable_txq(mvm, NULL, queue, 2001 IWL_MAX_TID_COUNT, 0); 2002 return ret; 2003 } 2004 2005 /* 2006 * For 22000 firmware and on we cannot add queue to a station unknown 2007 * to firmware so enable queue here - after the station was added 2008 */ 2009 if (iwl_mvm_has_new_tx_api(mvm)) { 2010 int txq; 2011 2012 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2013 if (txq < 0) { 2014 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2015 return txq; 2016 } 2017 2018 *queue = txq; 2019 } 2020 2021 return 0; 2022 } 2023 2024 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2025 { 2026 int ret; 2027 2028 lockdep_assert_held(&mvm->mutex); 2029 2030 /* Allocate aux station and assign to it the aux queue */ 2031 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2032 NL80211_IFTYPE_UNSPECIFIED, 2033 IWL_STA_AUX_ACTIVITY); 2034 if (ret) 2035 return ret; 2036 2037 /* 2038 * In CDB NICs we need to specify which lmac to use for aux activity 2039 * using the mac_id argument place to send lmac_id to the function 2040 */ 2041 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2042 &mvm->aux_sta, &mvm->aux_queue, 2043 IWL_MVM_TX_FIFO_MCAST); 2044 if (ret) { 2045 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2046 return ret; 2047 } 2048 2049 return 0; 2050 } 2051 2052 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2053 { 2054 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2055 2056 lockdep_assert_held(&mvm->mutex); 2057 2058 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2059 NULL, &mvm->snif_sta, 2060 &mvm->snif_queue, 2061 IWL_MVM_TX_FIFO_BE); 2062 } 2063 2064 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2065 { 2066 int ret; 2067 2068 lockdep_assert_held(&mvm->mutex); 2069 2070 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2071 return -EINVAL; 2072 2073 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT, 0); 2074 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2075 if (ret) 2076 IWL_WARN(mvm, "Failed sending remove station\n"); 2077 2078 return ret; 2079 } 2080 2081 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2082 { 2083 int ret; 2084 2085 lockdep_assert_held(&mvm->mutex); 2086 2087 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2088 return -EINVAL; 2089 2090 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT, 0); 2091 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2092 if (ret) 2093 IWL_WARN(mvm, "Failed sending remove station\n"); 2094 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2095 2096 return ret; 2097 } 2098 2099 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2100 { 2101 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2102 } 2103 2104 /* 2105 * Send the add station command for the vif's broadcast station. 2106 * Assumes that the station was already allocated. 2107 * 2108 * @mvm: the mvm component 2109 * @vif: the interface to which the broadcast station is added 2110 * @bsta: the broadcast station to add. 2111 */ 2112 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2113 { 2114 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2115 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2116 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2117 const u8 *baddr = _baddr; 2118 int queue; 2119 int ret; 2120 unsigned int wdg_timeout = 2121 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2122 struct iwl_trans_txq_scd_cfg cfg = { 2123 .fifo = IWL_MVM_TX_FIFO_VO, 2124 .sta_id = mvmvif->bcast_sta.sta_id, 2125 .tid = IWL_MAX_TID_COUNT, 2126 .aggregate = false, 2127 .frame_limit = IWL_FRAME_LIMIT, 2128 }; 2129 2130 lockdep_assert_held(&mvm->mutex); 2131 2132 if (!iwl_mvm_has_new_tx_api(mvm)) { 2133 if (vif->type == NL80211_IFTYPE_AP || 2134 vif->type == NL80211_IFTYPE_ADHOC) { 2135 queue = mvm->probe_queue; 2136 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2137 queue = mvm->p2p_dev_queue; 2138 } else { 2139 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2140 return -EINVAL; 2141 } 2142 2143 bsta->tfd_queue_msk |= BIT(queue); 2144 2145 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2146 } 2147 2148 if (vif->type == NL80211_IFTYPE_ADHOC) 2149 baddr = vif->bss_conf.bssid; 2150 2151 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2152 return -ENOSPC; 2153 2154 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2155 mvmvif->id, mvmvif->color); 2156 if (ret) 2157 return ret; 2158 2159 /* 2160 * For 22000 firmware and on we cannot add queue to a station unknown 2161 * to firmware so enable queue here - after the station was added 2162 */ 2163 if (iwl_mvm_has_new_tx_api(mvm)) { 2164 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2165 IWL_MAX_TID_COUNT, 2166 wdg_timeout); 2167 if (queue < 0) { 2168 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2169 return queue; 2170 } 2171 2172 if (vif->type == NL80211_IFTYPE_AP || 2173 vif->type == NL80211_IFTYPE_ADHOC) 2174 mvm->probe_queue = queue; 2175 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2176 mvm->p2p_dev_queue = queue; 2177 } 2178 2179 return 0; 2180 } 2181 2182 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2183 struct ieee80211_vif *vif) 2184 { 2185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2186 u16 *queueptr, queue; 2187 2188 lockdep_assert_held(&mvm->mutex); 2189 2190 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2191 2192 switch (vif->type) { 2193 case NL80211_IFTYPE_AP: 2194 case NL80211_IFTYPE_ADHOC: 2195 queueptr = &mvm->probe_queue; 2196 break; 2197 case NL80211_IFTYPE_P2P_DEVICE: 2198 queueptr = &mvm->p2p_dev_queue; 2199 break; 2200 default: 2201 WARN(1, "Can't free bcast queue on vif type %d\n", 2202 vif->type); 2203 return; 2204 } 2205 2206 queue = *queueptr; 2207 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT, 0); 2208 if (iwl_mvm_has_new_tx_api(mvm)) 2209 return; 2210 2211 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2212 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2213 } 2214 2215 /* Send the FW a request to remove the station from it's internal data 2216 * structures, but DO NOT remove the entry from the local data structures. */ 2217 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2218 { 2219 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2220 int ret; 2221 2222 lockdep_assert_held(&mvm->mutex); 2223 2224 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2225 2226 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2227 if (ret) 2228 IWL_WARN(mvm, "Failed sending remove station\n"); 2229 return ret; 2230 } 2231 2232 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2233 { 2234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2235 2236 lockdep_assert_held(&mvm->mutex); 2237 2238 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2239 ieee80211_vif_type_p2p(vif), 2240 IWL_STA_GENERAL_PURPOSE); 2241 } 2242 2243 /* Allocate a new station entry for the broadcast station to the given vif, 2244 * and send it to the FW. 2245 * Note that each P2P mac should have its own broadcast station. 2246 * 2247 * @mvm: the mvm component 2248 * @vif: the interface to which the broadcast station is added 2249 * @bsta: the broadcast station to add. */ 2250 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2251 { 2252 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2253 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2254 int ret; 2255 2256 lockdep_assert_held(&mvm->mutex); 2257 2258 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2259 if (ret) 2260 return ret; 2261 2262 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2263 2264 if (ret) 2265 iwl_mvm_dealloc_int_sta(mvm, bsta); 2266 2267 return ret; 2268 } 2269 2270 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2271 { 2272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2273 2274 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2275 } 2276 2277 /* 2278 * Send the FW a request to remove the station from it's internal data 2279 * structures, and in addition remove it from the local data structure. 2280 */ 2281 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2282 { 2283 int ret; 2284 2285 lockdep_assert_held(&mvm->mutex); 2286 2287 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2288 2289 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2290 2291 return ret; 2292 } 2293 2294 /* 2295 * Allocate a new station entry for the multicast station to the given vif, 2296 * and send it to the FW. 2297 * Note that each AP/GO mac should have its own multicast station. 2298 * 2299 * @mvm: the mvm component 2300 * @vif: the interface to which the multicast station is added 2301 */ 2302 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2303 { 2304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2305 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2306 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2307 const u8 *maddr = _maddr; 2308 struct iwl_trans_txq_scd_cfg cfg = { 2309 .fifo = vif->type == NL80211_IFTYPE_AP ? 2310 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2311 .sta_id = msta->sta_id, 2312 .tid = 0, 2313 .aggregate = false, 2314 .frame_limit = IWL_FRAME_LIMIT, 2315 }; 2316 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2317 int ret; 2318 2319 lockdep_assert_held(&mvm->mutex); 2320 2321 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2322 vif->type != NL80211_IFTYPE_ADHOC)) 2323 return -ENOTSUPP; 2324 2325 /* 2326 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2327 * invalid, so make sure we use the queue we want. 2328 * Note that this is done here as we want to avoid making DQA 2329 * changes in mac80211 layer. 2330 */ 2331 if (vif->type == NL80211_IFTYPE_ADHOC) 2332 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2333 2334 /* 2335 * While in previous FWs we had to exclude cab queue from TFD queue 2336 * mask, now it is needed as any other queue. 2337 */ 2338 if (!iwl_mvm_has_new_tx_api(mvm) && 2339 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2340 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2341 timeout); 2342 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2343 } 2344 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2345 mvmvif->id, mvmvif->color); 2346 if (ret) 2347 goto err; 2348 2349 /* 2350 * Enable cab queue after the ADD_STA command is sent. 2351 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2352 * command with unknown station id, and for FW that doesn't support 2353 * station API since the cab queue is not included in the 2354 * tfd_queue_mask. 2355 */ 2356 if (iwl_mvm_has_new_tx_api(mvm)) { 2357 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2358 0, 2359 timeout); 2360 if (queue < 0) { 2361 ret = queue; 2362 goto err; 2363 } 2364 mvmvif->cab_queue = queue; 2365 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2366 IWL_UCODE_TLV_API_STA_TYPE)) 2367 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2368 timeout); 2369 2370 return 0; 2371 err: 2372 iwl_mvm_dealloc_int_sta(mvm, msta); 2373 return ret; 2374 } 2375 2376 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2377 struct ieee80211_key_conf *keyconf, 2378 bool mcast) 2379 { 2380 union { 2381 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2382 struct iwl_mvm_add_sta_key_cmd cmd; 2383 } u = {}; 2384 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2385 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2386 __le16 key_flags; 2387 int ret, size; 2388 u32 status; 2389 2390 /* This is a valid situation for GTK removal */ 2391 if (sta_id == IWL_MVM_INVALID_STA) 2392 return 0; 2393 2394 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2395 STA_KEY_FLG_KEYID_MSK); 2396 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2397 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2398 2399 if (mcast) 2400 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2401 2402 /* 2403 * The fields assigned here are in the same location at the start 2404 * of the command, so we can do this union trick. 2405 */ 2406 u.cmd.common.key_flags = key_flags; 2407 u.cmd.common.key_offset = keyconf->hw_key_idx; 2408 u.cmd.common.sta_id = sta_id; 2409 2410 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2411 2412 status = ADD_STA_SUCCESS; 2413 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2414 &status); 2415 2416 switch (status) { 2417 case ADD_STA_SUCCESS: 2418 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2419 break; 2420 default: 2421 ret = -EIO; 2422 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2423 break; 2424 } 2425 2426 return ret; 2427 } 2428 2429 /* 2430 * Send the FW a request to remove the station from it's internal data 2431 * structures, and in addition remove it from the local data structure. 2432 */ 2433 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2434 { 2435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2436 int ret; 2437 2438 lockdep_assert_held(&mvm->mutex); 2439 2440 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2441 2442 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0, 0); 2443 2444 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2445 if (ret) 2446 IWL_WARN(mvm, "Failed sending remove station\n"); 2447 2448 return ret; 2449 } 2450 2451 #define IWL_MAX_RX_BA_SESSIONS 16 2452 2453 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2454 { 2455 struct iwl_mvm_delba_data notif = { 2456 .baid = baid, 2457 }; 2458 2459 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2460 ¬if, sizeof(notif)); 2461 }; 2462 2463 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2464 struct iwl_mvm_baid_data *data) 2465 { 2466 int i; 2467 2468 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2469 2470 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2471 int j; 2472 struct iwl_mvm_reorder_buffer *reorder_buf = 2473 &data->reorder_buf[i]; 2474 struct iwl_mvm_reorder_buf_entry *entries = 2475 &data->entries[i * data->entries_per_queue]; 2476 2477 spin_lock_bh(&reorder_buf->lock); 2478 if (likely(!reorder_buf->num_stored)) { 2479 spin_unlock_bh(&reorder_buf->lock); 2480 continue; 2481 } 2482 2483 /* 2484 * This shouldn't happen in regular DELBA since the internal 2485 * delBA notification should trigger a release of all frames in 2486 * the reorder buffer. 2487 */ 2488 WARN_ON(1); 2489 2490 for (j = 0; j < reorder_buf->buf_size; j++) 2491 __skb_queue_purge(&entries[j].e.frames); 2492 /* 2493 * Prevent timer re-arm. This prevents a very far fetched case 2494 * where we timed out on the notification. There may be prior 2495 * RX frames pending in the RX queue before the notification 2496 * that might get processed between now and the actual deletion 2497 * and we would re-arm the timer although we are deleting the 2498 * reorder buffer. 2499 */ 2500 reorder_buf->removed = true; 2501 spin_unlock_bh(&reorder_buf->lock); 2502 del_timer_sync(&reorder_buf->reorder_timer); 2503 } 2504 } 2505 2506 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2507 struct iwl_mvm_baid_data *data, 2508 u16 ssn, u16 buf_size) 2509 { 2510 int i; 2511 2512 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2513 struct iwl_mvm_reorder_buffer *reorder_buf = 2514 &data->reorder_buf[i]; 2515 struct iwl_mvm_reorder_buf_entry *entries = 2516 &data->entries[i * data->entries_per_queue]; 2517 int j; 2518 2519 reorder_buf->num_stored = 0; 2520 reorder_buf->head_sn = ssn; 2521 reorder_buf->buf_size = buf_size; 2522 /* rx reorder timer */ 2523 timer_setup(&reorder_buf->reorder_timer, 2524 iwl_mvm_reorder_timer_expired, 0); 2525 spin_lock_init(&reorder_buf->lock); 2526 reorder_buf->mvm = mvm; 2527 reorder_buf->queue = i; 2528 reorder_buf->valid = false; 2529 for (j = 0; j < reorder_buf->buf_size; j++) 2530 __skb_queue_head_init(&entries[j].e.frames); 2531 } 2532 } 2533 2534 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2535 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2536 { 2537 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2538 struct iwl_mvm_add_sta_cmd cmd = {}; 2539 struct iwl_mvm_baid_data *baid_data = NULL; 2540 int ret; 2541 u32 status; 2542 2543 lockdep_assert_held(&mvm->mutex); 2544 2545 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2546 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2547 return -ENOSPC; 2548 } 2549 2550 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2551 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2552 2553 /* sparse doesn't like the __align() so don't check */ 2554 #ifndef __CHECKER__ 2555 /* 2556 * The division below will be OK if either the cache line size 2557 * can be divided by the entry size (ALIGN will round up) or if 2558 * if the entry size can be divided by the cache line size, in 2559 * which case the ALIGN() will do nothing. 2560 */ 2561 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2562 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2563 #endif 2564 2565 /* 2566 * Upward align the reorder buffer size to fill an entire cache 2567 * line for each queue, to avoid sharing cache lines between 2568 * different queues. 2569 */ 2570 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2571 2572 /* 2573 * Allocate here so if allocation fails we can bail out early 2574 * before starting the BA session in the firmware 2575 */ 2576 baid_data = kzalloc(sizeof(*baid_data) + 2577 mvm->trans->num_rx_queues * 2578 reorder_buf_size, 2579 GFP_KERNEL); 2580 if (!baid_data) 2581 return -ENOMEM; 2582 2583 /* 2584 * This division is why we need the above BUILD_BUG_ON(), 2585 * if that doesn't hold then this will not be right. 2586 */ 2587 baid_data->entries_per_queue = 2588 reorder_buf_size / sizeof(baid_data->entries[0]); 2589 } 2590 2591 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2592 cmd.sta_id = mvm_sta->sta_id; 2593 cmd.add_modify = STA_MODE_MODIFY; 2594 if (start) { 2595 cmd.add_immediate_ba_tid = (u8) tid; 2596 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2597 cmd.rx_ba_window = cpu_to_le16(buf_size); 2598 } else { 2599 cmd.remove_immediate_ba_tid = (u8) tid; 2600 } 2601 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2602 STA_MODIFY_REMOVE_BA_TID; 2603 2604 status = ADD_STA_SUCCESS; 2605 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2606 iwl_mvm_add_sta_cmd_size(mvm), 2607 &cmd, &status); 2608 if (ret) 2609 goto out_free; 2610 2611 switch (status & IWL_ADD_STA_STATUS_MASK) { 2612 case ADD_STA_SUCCESS: 2613 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2614 start ? "start" : "stopp"); 2615 break; 2616 case ADD_STA_IMMEDIATE_BA_FAILURE: 2617 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2618 ret = -ENOSPC; 2619 break; 2620 default: 2621 ret = -EIO; 2622 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2623 start ? "start" : "stopp", status); 2624 break; 2625 } 2626 2627 if (ret) 2628 goto out_free; 2629 2630 if (start) { 2631 u8 baid; 2632 2633 mvm->rx_ba_sessions++; 2634 2635 if (!iwl_mvm_has_new_rx_api(mvm)) 2636 return 0; 2637 2638 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2639 ret = -EINVAL; 2640 goto out_free; 2641 } 2642 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2643 IWL_ADD_STA_BAID_SHIFT); 2644 baid_data->baid = baid; 2645 baid_data->timeout = timeout; 2646 baid_data->last_rx = jiffies; 2647 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2648 timer_setup(&baid_data->session_timer, 2649 iwl_mvm_rx_agg_session_expired, 0); 2650 baid_data->mvm = mvm; 2651 baid_data->tid = tid; 2652 baid_data->sta_id = mvm_sta->sta_id; 2653 2654 mvm_sta->tid_to_baid[tid] = baid; 2655 if (timeout) 2656 mod_timer(&baid_data->session_timer, 2657 TU_TO_EXP_TIME(timeout * 2)); 2658 2659 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2660 /* 2661 * protect the BA data with RCU to cover a case where our 2662 * internal RX sync mechanism will timeout (not that it's 2663 * supposed to happen) and we will free the session data while 2664 * RX is being processed in parallel 2665 */ 2666 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2667 mvm_sta->sta_id, tid, baid); 2668 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2669 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2670 } else { 2671 u8 baid = mvm_sta->tid_to_baid[tid]; 2672 2673 if (mvm->rx_ba_sessions > 0) 2674 /* check that restart flow didn't zero the counter */ 2675 mvm->rx_ba_sessions--; 2676 if (!iwl_mvm_has_new_rx_api(mvm)) 2677 return 0; 2678 2679 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2680 return -EINVAL; 2681 2682 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2683 if (WARN_ON(!baid_data)) 2684 return -EINVAL; 2685 2686 /* synchronize all rx queues so we can safely delete */ 2687 iwl_mvm_free_reorder(mvm, baid_data); 2688 del_timer_sync(&baid_data->session_timer); 2689 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2690 kfree_rcu(baid_data, rcu_head); 2691 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2692 } 2693 return 0; 2694 2695 out_free: 2696 kfree(baid_data); 2697 return ret; 2698 } 2699 2700 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2701 int tid, u8 queue, bool start) 2702 { 2703 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2704 struct iwl_mvm_add_sta_cmd cmd = {}; 2705 int ret; 2706 u32 status; 2707 2708 lockdep_assert_held(&mvm->mutex); 2709 2710 if (start) { 2711 mvm_sta->tfd_queue_msk |= BIT(queue); 2712 mvm_sta->tid_disable_agg &= ~BIT(tid); 2713 } else { 2714 /* In DQA-mode the queue isn't removed on agg termination */ 2715 mvm_sta->tid_disable_agg |= BIT(tid); 2716 } 2717 2718 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2719 cmd.sta_id = mvm_sta->sta_id; 2720 cmd.add_modify = STA_MODE_MODIFY; 2721 if (!iwl_mvm_has_new_tx_api(mvm)) 2722 cmd.modify_mask = STA_MODIFY_QUEUES; 2723 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2724 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2725 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2726 2727 status = ADD_STA_SUCCESS; 2728 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2729 iwl_mvm_add_sta_cmd_size(mvm), 2730 &cmd, &status); 2731 if (ret) 2732 return ret; 2733 2734 switch (status & IWL_ADD_STA_STATUS_MASK) { 2735 case ADD_STA_SUCCESS: 2736 break; 2737 default: 2738 ret = -EIO; 2739 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2740 start ? "start" : "stopp", status); 2741 break; 2742 } 2743 2744 return ret; 2745 } 2746 2747 const u8 tid_to_mac80211_ac[] = { 2748 IEEE80211_AC_BE, 2749 IEEE80211_AC_BK, 2750 IEEE80211_AC_BK, 2751 IEEE80211_AC_BE, 2752 IEEE80211_AC_VI, 2753 IEEE80211_AC_VI, 2754 IEEE80211_AC_VO, 2755 IEEE80211_AC_VO, 2756 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2757 }; 2758 2759 static const u8 tid_to_ucode_ac[] = { 2760 AC_BE, 2761 AC_BK, 2762 AC_BK, 2763 AC_BE, 2764 AC_VI, 2765 AC_VI, 2766 AC_VO, 2767 AC_VO, 2768 }; 2769 2770 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2771 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2772 { 2773 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2774 struct iwl_mvm_tid_data *tid_data; 2775 u16 normalized_ssn; 2776 u16 txq_id; 2777 int ret; 2778 2779 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2780 return -EINVAL; 2781 2782 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2783 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2784 IWL_ERR(mvm, 2785 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2786 mvmsta->tid_data[tid].state); 2787 return -ENXIO; 2788 } 2789 2790 lockdep_assert_held(&mvm->mutex); 2791 2792 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2793 iwl_mvm_has_new_tx_api(mvm)) { 2794 u8 ac = tid_to_mac80211_ac[tid]; 2795 2796 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2797 if (ret) 2798 return ret; 2799 } 2800 2801 spin_lock_bh(&mvmsta->lock); 2802 2803 /* 2804 * Note the possible cases: 2805 * 1. An enabled TXQ - TXQ needs to become agg'ed 2806 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2807 * it as reserved 2808 */ 2809 txq_id = mvmsta->tid_data[tid].txq_id; 2810 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2811 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2812 IWL_MVM_DQA_MIN_DATA_QUEUE, 2813 IWL_MVM_DQA_MAX_DATA_QUEUE); 2814 if (ret < 0) { 2815 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2816 goto out; 2817 } 2818 2819 txq_id = ret; 2820 2821 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2822 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2823 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2824 ret = -ENXIO; 2825 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2826 tid, IWL_MAX_HW_QUEUES - 1); 2827 goto out; 2828 2829 } else if (unlikely(mvm->queue_info[txq_id].status == 2830 IWL_MVM_QUEUE_SHARED)) { 2831 ret = -ENXIO; 2832 IWL_DEBUG_TX_QUEUES(mvm, 2833 "Can't start tid %d agg on shared queue!\n", 2834 tid); 2835 goto out; 2836 } 2837 2838 IWL_DEBUG_TX_QUEUES(mvm, 2839 "AGG for tid %d will be on queue #%d\n", 2840 tid, txq_id); 2841 2842 tid_data = &mvmsta->tid_data[tid]; 2843 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2844 tid_data->txq_id = txq_id; 2845 *ssn = tid_data->ssn; 2846 2847 IWL_DEBUG_TX_QUEUES(mvm, 2848 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2849 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2850 tid_data->next_reclaimed); 2851 2852 /* 2853 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2854 * to align the wrap around of ssn so we compare relevant values. 2855 */ 2856 normalized_ssn = tid_data->ssn; 2857 if (mvm->trans->trans_cfg->gen2) 2858 normalized_ssn &= 0xff; 2859 2860 if (normalized_ssn == tid_data->next_reclaimed) { 2861 tid_data->state = IWL_AGG_STARTING; 2862 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 2863 } else { 2864 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2865 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 2866 } 2867 2868 out: 2869 spin_unlock_bh(&mvmsta->lock); 2870 2871 return ret; 2872 } 2873 2874 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2875 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2876 bool amsdu) 2877 { 2878 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2879 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2880 unsigned int wdg_timeout = 2881 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2882 int queue, ret; 2883 bool alloc_queue = true; 2884 enum iwl_mvm_queue_status queue_status; 2885 u16 ssn; 2886 2887 struct iwl_trans_txq_scd_cfg cfg = { 2888 .sta_id = mvmsta->sta_id, 2889 .tid = tid, 2890 .frame_limit = buf_size, 2891 .aggregate = true, 2892 }; 2893 2894 /* 2895 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2896 * manager, so this function should never be called in this case. 2897 */ 2898 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2899 return -EINVAL; 2900 2901 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2902 != IWL_MAX_TID_COUNT); 2903 2904 spin_lock_bh(&mvmsta->lock); 2905 ssn = tid_data->ssn; 2906 queue = tid_data->txq_id; 2907 tid_data->state = IWL_AGG_ON; 2908 mvmsta->agg_tids |= BIT(tid); 2909 tid_data->ssn = 0xffff; 2910 tid_data->amsdu_in_ampdu_allowed = amsdu; 2911 spin_unlock_bh(&mvmsta->lock); 2912 2913 if (iwl_mvm_has_new_tx_api(mvm)) { 2914 /* 2915 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2916 * would have failed, so if we are here there is no need to 2917 * allocate a queue. 2918 * However, if aggregation size is different than the default 2919 * size, the scheduler should be reconfigured. 2920 * We cannot do this with the new TX API, so return unsupported 2921 * for now, until it will be offloaded to firmware.. 2922 * Note that if SCD default value changes - this condition 2923 * should be updated as well. 2924 */ 2925 if (buf_size < IWL_FRAME_LIMIT) 2926 return -ENOTSUPP; 2927 2928 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2929 if (ret) 2930 return -EIO; 2931 goto out; 2932 } 2933 2934 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2935 2936 queue_status = mvm->queue_info[queue].status; 2937 2938 /* Maybe there is no need to even alloc a queue... */ 2939 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2940 alloc_queue = false; 2941 2942 /* 2943 * Only reconfig the SCD for the queue if the window size has 2944 * changed from current (become smaller) 2945 */ 2946 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2947 /* 2948 * If reconfiguring an existing queue, it first must be 2949 * drained 2950 */ 2951 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2952 BIT(queue)); 2953 if (ret) { 2954 IWL_ERR(mvm, 2955 "Error draining queue before reconfig\n"); 2956 return ret; 2957 } 2958 2959 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2960 mvmsta->sta_id, tid, 2961 buf_size, ssn); 2962 if (ret) { 2963 IWL_ERR(mvm, 2964 "Error reconfiguring TXQ #%d\n", queue); 2965 return ret; 2966 } 2967 } 2968 2969 if (alloc_queue) 2970 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 2971 &cfg, wdg_timeout); 2972 2973 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2974 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2975 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2976 if (ret) 2977 return -EIO; 2978 } 2979 2980 /* No need to mark as reserved */ 2981 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2982 2983 out: 2984 /* 2985 * Even though in theory the peer could have different 2986 * aggregation reorder buffer sizes for different sessions, 2987 * our ucode doesn't allow for that and has a global limit 2988 * for each station. Therefore, use the minimum of all the 2989 * aggregation sessions and our default value. 2990 */ 2991 mvmsta->max_agg_bufsize = 2992 min(mvmsta->max_agg_bufsize, buf_size); 2993 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2994 2995 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2996 sta->addr, tid); 2997 2998 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 2999 } 3000 3001 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3002 struct iwl_mvm_sta *mvmsta, 3003 struct iwl_mvm_tid_data *tid_data) 3004 { 3005 u16 txq_id = tid_data->txq_id; 3006 3007 lockdep_assert_held(&mvm->mutex); 3008 3009 if (iwl_mvm_has_new_tx_api(mvm)) 3010 return; 3011 3012 /* 3013 * The TXQ is marked as reserved only if no traffic came through yet 3014 * This means no traffic has been sent on this TID (agg'd or not), so 3015 * we no longer have use for the queue. Since it hasn't even been 3016 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3017 * free. 3018 */ 3019 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3020 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3021 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3022 } 3023 } 3024 3025 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3026 struct ieee80211_sta *sta, u16 tid) 3027 { 3028 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3029 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3030 u16 txq_id; 3031 int err; 3032 3033 /* 3034 * If mac80211 is cleaning its state, then say that we finished since 3035 * our state has been cleared anyway. 3036 */ 3037 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3038 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3039 return 0; 3040 } 3041 3042 spin_lock_bh(&mvmsta->lock); 3043 3044 txq_id = tid_data->txq_id; 3045 3046 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3047 mvmsta->sta_id, tid, txq_id, tid_data->state); 3048 3049 mvmsta->agg_tids &= ~BIT(tid); 3050 3051 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3052 3053 switch (tid_data->state) { 3054 case IWL_AGG_ON: 3055 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3056 3057 IWL_DEBUG_TX_QUEUES(mvm, 3058 "ssn = %d, next_recl = %d\n", 3059 tid_data->ssn, tid_data->next_reclaimed); 3060 3061 tid_data->ssn = 0xffff; 3062 tid_data->state = IWL_AGG_OFF; 3063 spin_unlock_bh(&mvmsta->lock); 3064 3065 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3066 3067 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3068 return 0; 3069 case IWL_AGG_STARTING: 3070 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3071 /* 3072 * The agg session has been stopped before it was set up. This 3073 * can happen when the AddBA timer times out for example. 3074 */ 3075 3076 /* No barriers since we are under mutex */ 3077 lockdep_assert_held(&mvm->mutex); 3078 3079 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3080 tid_data->state = IWL_AGG_OFF; 3081 err = 0; 3082 break; 3083 default: 3084 IWL_ERR(mvm, 3085 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3086 mvmsta->sta_id, tid, tid_data->state); 3087 IWL_ERR(mvm, 3088 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3089 err = -EINVAL; 3090 } 3091 3092 spin_unlock_bh(&mvmsta->lock); 3093 3094 return err; 3095 } 3096 3097 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3098 struct ieee80211_sta *sta, u16 tid) 3099 { 3100 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3101 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3102 u16 txq_id; 3103 enum iwl_mvm_agg_state old_state; 3104 3105 /* 3106 * First set the agg state to OFF to avoid calling 3107 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3108 */ 3109 spin_lock_bh(&mvmsta->lock); 3110 txq_id = tid_data->txq_id; 3111 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3112 mvmsta->sta_id, tid, txq_id, tid_data->state); 3113 old_state = tid_data->state; 3114 tid_data->state = IWL_AGG_OFF; 3115 mvmsta->agg_tids &= ~BIT(tid); 3116 spin_unlock_bh(&mvmsta->lock); 3117 3118 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3119 3120 if (old_state >= IWL_AGG_ON) { 3121 iwl_mvm_drain_sta(mvm, mvmsta, true); 3122 3123 if (iwl_mvm_has_new_tx_api(mvm)) { 3124 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3125 BIT(tid))) 3126 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3127 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3128 } else { 3129 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3130 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3131 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3132 } 3133 3134 iwl_mvm_drain_sta(mvm, mvmsta, false); 3135 3136 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3137 } 3138 3139 return 0; 3140 } 3141 3142 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3143 { 3144 int i, max = -1, max_offs = -1; 3145 3146 lockdep_assert_held(&mvm->mutex); 3147 3148 /* Pick the unused key offset with the highest 'deleted' 3149 * counter. Every time a key is deleted, all the counters 3150 * are incremented and the one that was just deleted is 3151 * reset to zero. Thus, the highest counter is the one 3152 * that was deleted longest ago. Pick that one. 3153 */ 3154 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3155 if (test_bit(i, mvm->fw_key_table)) 3156 continue; 3157 if (mvm->fw_key_deleted[i] > max) { 3158 max = mvm->fw_key_deleted[i]; 3159 max_offs = i; 3160 } 3161 } 3162 3163 if (max_offs < 0) 3164 return STA_KEY_IDX_INVALID; 3165 3166 return max_offs; 3167 } 3168 3169 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3170 struct ieee80211_vif *vif, 3171 struct ieee80211_sta *sta) 3172 { 3173 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3174 3175 if (sta) 3176 return iwl_mvm_sta_from_mac80211(sta); 3177 3178 /* 3179 * The device expects GTKs for station interfaces to be 3180 * installed as GTKs for the AP station. If we have no 3181 * station ID, then use AP's station ID. 3182 */ 3183 if (vif->type == NL80211_IFTYPE_STATION && 3184 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3185 u8 sta_id = mvmvif->ap_sta_id; 3186 3187 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3188 lockdep_is_held(&mvm->mutex)); 3189 3190 /* 3191 * It is possible that the 'sta' parameter is NULL, 3192 * for example when a GTK is removed - the sta_id will then 3193 * be the AP ID, and no station was passed by mac80211. 3194 */ 3195 if (IS_ERR_OR_NULL(sta)) 3196 return NULL; 3197 3198 return iwl_mvm_sta_from_mac80211(sta); 3199 } 3200 3201 return NULL; 3202 } 3203 3204 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3205 { 3206 int i; 3207 3208 for (i = len - 1; i >= 0; i--) { 3209 if (pn1[i] > pn2[i]) 3210 return 1; 3211 if (pn1[i] < pn2[i]) 3212 return -1; 3213 } 3214 3215 return 0; 3216 } 3217 3218 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3219 u32 sta_id, 3220 struct ieee80211_key_conf *key, bool mcast, 3221 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3222 u8 key_offset, bool mfp) 3223 { 3224 union { 3225 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3226 struct iwl_mvm_add_sta_key_cmd cmd; 3227 } u = {}; 3228 __le16 key_flags; 3229 int ret; 3230 u32 status; 3231 u16 keyidx; 3232 u64 pn = 0; 3233 int i, size; 3234 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3235 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3236 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3237 ADD_STA_KEY, 3238 new_api ? 2 : 1); 3239 3240 if (sta_id == IWL_MVM_INVALID_STA) 3241 return -EINVAL; 3242 3243 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3244 STA_KEY_FLG_KEYID_MSK; 3245 key_flags = cpu_to_le16(keyidx); 3246 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3247 3248 switch (key->cipher) { 3249 case WLAN_CIPHER_SUITE_TKIP: 3250 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3251 if (api_ver >= 2) { 3252 memcpy((void *)&u.cmd.tx_mic_key, 3253 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3254 IWL_MIC_KEY_SIZE); 3255 3256 memcpy((void *)&u.cmd.rx_mic_key, 3257 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3258 IWL_MIC_KEY_SIZE); 3259 pn = atomic64_read(&key->tx_pn); 3260 3261 } else { 3262 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3263 for (i = 0; i < 5; i++) 3264 u.cmd_v1.tkip_rx_ttak[i] = 3265 cpu_to_le16(tkip_p1k[i]); 3266 } 3267 memcpy(u.cmd.common.key, key->key, key->keylen); 3268 break; 3269 case WLAN_CIPHER_SUITE_CCMP: 3270 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3271 memcpy(u.cmd.common.key, key->key, key->keylen); 3272 if (api_ver >= 2) 3273 pn = atomic64_read(&key->tx_pn); 3274 break; 3275 case WLAN_CIPHER_SUITE_WEP104: 3276 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3277 fallthrough; 3278 case WLAN_CIPHER_SUITE_WEP40: 3279 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3280 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3281 break; 3282 case WLAN_CIPHER_SUITE_GCMP_256: 3283 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3284 fallthrough; 3285 case WLAN_CIPHER_SUITE_GCMP: 3286 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3287 memcpy(u.cmd.common.key, key->key, key->keylen); 3288 if (api_ver >= 2) 3289 pn = atomic64_read(&key->tx_pn); 3290 break; 3291 default: 3292 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3293 memcpy(u.cmd.common.key, key->key, key->keylen); 3294 } 3295 3296 if (mcast) 3297 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3298 if (mfp) 3299 key_flags |= cpu_to_le16(STA_KEY_MFP); 3300 3301 u.cmd.common.key_offset = key_offset; 3302 u.cmd.common.key_flags = key_flags; 3303 u.cmd.common.sta_id = sta_id; 3304 3305 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3306 i = 0; 3307 else 3308 i = -1; 3309 3310 for (; i < IEEE80211_NUM_TIDS; i++) { 3311 struct ieee80211_key_seq seq = {}; 3312 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3313 int rx_pn_len = 8; 3314 /* there's a hole at 2/3 in FW format depending on version */ 3315 int hole = api_ver >= 3 ? 0 : 2; 3316 3317 ieee80211_get_key_rx_seq(key, i, &seq); 3318 3319 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3320 rx_pn[0] = seq.tkip.iv16; 3321 rx_pn[1] = seq.tkip.iv16 >> 8; 3322 rx_pn[2 + hole] = seq.tkip.iv32; 3323 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3324 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3325 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3326 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3327 rx_pn = seq.hw.seq; 3328 rx_pn_len = seq.hw.seq_len; 3329 } else { 3330 rx_pn[0] = seq.ccmp.pn[0]; 3331 rx_pn[1] = seq.ccmp.pn[1]; 3332 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3333 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3334 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3335 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3336 } 3337 3338 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3339 rx_pn_len) > 0) 3340 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3341 rx_pn_len); 3342 } 3343 3344 if (api_ver >= 2) { 3345 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3346 size = sizeof(u.cmd); 3347 } else { 3348 size = sizeof(u.cmd_v1); 3349 } 3350 3351 status = ADD_STA_SUCCESS; 3352 if (cmd_flags & CMD_ASYNC) 3353 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3354 &u.cmd); 3355 else 3356 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3357 &u.cmd, &status); 3358 3359 switch (status) { 3360 case ADD_STA_SUCCESS: 3361 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3362 break; 3363 default: 3364 ret = -EIO; 3365 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3366 break; 3367 } 3368 3369 return ret; 3370 } 3371 3372 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3373 struct ieee80211_key_conf *keyconf, 3374 u8 sta_id, bool remove_key) 3375 { 3376 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3377 3378 /* verify the key details match the required command's expectations */ 3379 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3380 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3381 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3382 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3383 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3384 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3385 return -EINVAL; 3386 3387 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3388 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3389 return -EINVAL; 3390 3391 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3392 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3393 3394 if (remove_key) { 3395 /* This is a valid situation for IGTK */ 3396 if (sta_id == IWL_MVM_INVALID_STA) 3397 return 0; 3398 3399 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3400 } else { 3401 struct ieee80211_key_seq seq; 3402 const u8 *pn; 3403 3404 switch (keyconf->cipher) { 3405 case WLAN_CIPHER_SUITE_AES_CMAC: 3406 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3407 break; 3408 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3409 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3410 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3411 break; 3412 default: 3413 return -EINVAL; 3414 } 3415 3416 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3417 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3418 igtk_cmd.ctrl_flags |= 3419 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3420 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3421 pn = seq.aes_cmac.pn; 3422 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3423 ((u64) pn[4] << 8) | 3424 ((u64) pn[3] << 16) | 3425 ((u64) pn[2] << 24) | 3426 ((u64) pn[1] << 32) | 3427 ((u64) pn[0] << 40)); 3428 } 3429 3430 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3431 remove_key ? "removing" : "installing", 3432 keyconf->keyidx >= 6 ? "B" : "", 3433 keyconf->keyidx, igtk_cmd.sta_id); 3434 3435 if (!iwl_mvm_has_new_rx_api(mvm)) { 3436 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3437 .ctrl_flags = igtk_cmd.ctrl_flags, 3438 .key_id = igtk_cmd.key_id, 3439 .sta_id = igtk_cmd.sta_id, 3440 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3441 }; 3442 3443 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3444 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3445 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3446 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3447 } 3448 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3449 sizeof(igtk_cmd), &igtk_cmd); 3450 } 3451 3452 3453 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3454 struct ieee80211_vif *vif, 3455 struct ieee80211_sta *sta) 3456 { 3457 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3458 3459 if (sta) 3460 return sta->addr; 3461 3462 if (vif->type == NL80211_IFTYPE_STATION && 3463 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3464 u8 sta_id = mvmvif->ap_sta_id; 3465 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3466 lockdep_is_held(&mvm->mutex)); 3467 return sta->addr; 3468 } 3469 3470 3471 return NULL; 3472 } 3473 3474 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3475 struct ieee80211_vif *vif, 3476 struct ieee80211_sta *sta, 3477 struct ieee80211_key_conf *keyconf, 3478 u8 key_offset, 3479 bool mcast) 3480 { 3481 const u8 *addr; 3482 struct ieee80211_key_seq seq; 3483 u16 p1k[5]; 3484 u32 sta_id; 3485 bool mfp = false; 3486 3487 if (sta) { 3488 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3489 3490 sta_id = mvm_sta->sta_id; 3491 mfp = sta->mfp; 3492 } else if (vif->type == NL80211_IFTYPE_AP && 3493 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3494 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3495 3496 sta_id = mvmvif->mcast_sta.sta_id; 3497 } else { 3498 IWL_ERR(mvm, "Failed to find station id\n"); 3499 return -EINVAL; 3500 } 3501 3502 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3503 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3504 /* get phase 1 key from mac80211 */ 3505 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3506 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3507 3508 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3509 seq.tkip.iv32, p1k, 0, key_offset, 3510 mfp); 3511 } 3512 3513 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3514 0, NULL, 0, key_offset, mfp); 3515 } 3516 3517 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3518 struct ieee80211_vif *vif, 3519 struct ieee80211_sta *sta, 3520 struct ieee80211_key_conf *keyconf, 3521 u8 key_offset) 3522 { 3523 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3524 struct iwl_mvm_sta *mvm_sta; 3525 u8 sta_id = IWL_MVM_INVALID_STA; 3526 int ret; 3527 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3528 3529 lockdep_assert_held(&mvm->mutex); 3530 3531 if (vif->type != NL80211_IFTYPE_AP || 3532 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3533 /* Get the station id from the mvm local station table */ 3534 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3535 if (!mvm_sta) { 3536 IWL_ERR(mvm, "Failed to find station\n"); 3537 return -EINVAL; 3538 } 3539 sta_id = mvm_sta->sta_id; 3540 3541 /* 3542 * It is possible that the 'sta' parameter is NULL, and thus 3543 * there is a need to retrieve the sta from the local station 3544 * table. 3545 */ 3546 if (!sta) { 3547 sta = rcu_dereference_protected( 3548 mvm->fw_id_to_mac_id[sta_id], 3549 lockdep_is_held(&mvm->mutex)); 3550 if (IS_ERR_OR_NULL(sta)) { 3551 IWL_ERR(mvm, "Invalid station id\n"); 3552 return -EINVAL; 3553 } 3554 } 3555 3556 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3557 return -EINVAL; 3558 } else { 3559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3560 3561 sta_id = mvmvif->mcast_sta.sta_id; 3562 } 3563 3564 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3565 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3566 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3567 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3568 goto end; 3569 } 3570 3571 /* If the key_offset is not pre-assigned, we need to find a 3572 * new offset to use. In normal cases, the offset is not 3573 * pre-assigned, but during HW_RESTART we want to reuse the 3574 * same indices, so we pass them when this function is called. 3575 * 3576 * In D3 entry, we need to hardcoded the indices (because the 3577 * firmware hardcodes the PTK offset to 0). In this case, we 3578 * need to make sure we don't overwrite the hw_key_idx in the 3579 * keyconf structure, because otherwise we cannot configure 3580 * the original ones back when resuming. 3581 */ 3582 if (key_offset == STA_KEY_IDX_INVALID) { 3583 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3584 if (key_offset == STA_KEY_IDX_INVALID) 3585 return -ENOSPC; 3586 keyconf->hw_key_idx = key_offset; 3587 } 3588 3589 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3590 if (ret) 3591 goto end; 3592 3593 /* 3594 * For WEP, the same key is used for multicast and unicast. Upload it 3595 * again, using the same key offset, and now pointing the other one 3596 * to the same key slot (offset). 3597 * If this fails, remove the original as well. 3598 */ 3599 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3600 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3601 sta) { 3602 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3603 key_offset, !mcast); 3604 if (ret) { 3605 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3606 goto end; 3607 } 3608 } 3609 3610 __set_bit(key_offset, mvm->fw_key_table); 3611 3612 end: 3613 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3614 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3615 sta ? sta->addr : zero_addr, ret); 3616 return ret; 3617 } 3618 3619 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3620 struct ieee80211_vif *vif, 3621 struct ieee80211_sta *sta, 3622 struct ieee80211_key_conf *keyconf) 3623 { 3624 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3625 struct iwl_mvm_sta *mvm_sta; 3626 u8 sta_id = IWL_MVM_INVALID_STA; 3627 int ret, i; 3628 3629 lockdep_assert_held(&mvm->mutex); 3630 3631 /* Get the station from the mvm local station table */ 3632 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3633 if (mvm_sta) 3634 sta_id = mvm_sta->sta_id; 3635 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3636 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3637 3638 3639 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3640 keyconf->keyidx, sta_id); 3641 3642 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3643 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3644 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3645 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3646 3647 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3648 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3649 keyconf->hw_key_idx); 3650 return -ENOENT; 3651 } 3652 3653 /* track which key was deleted last */ 3654 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3655 if (mvm->fw_key_deleted[i] < U8_MAX) 3656 mvm->fw_key_deleted[i]++; 3657 } 3658 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3659 3660 if (sta && !mvm_sta) { 3661 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3662 return 0; 3663 } 3664 3665 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3666 if (ret) 3667 return ret; 3668 3669 /* delete WEP key twice to get rid of (now useless) offset */ 3670 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3671 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3672 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3673 3674 return ret; 3675 } 3676 3677 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3678 struct ieee80211_vif *vif, 3679 struct ieee80211_key_conf *keyconf, 3680 struct ieee80211_sta *sta, u32 iv32, 3681 u16 *phase1key) 3682 { 3683 struct iwl_mvm_sta *mvm_sta; 3684 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3685 bool mfp = sta ? sta->mfp : false; 3686 3687 rcu_read_lock(); 3688 3689 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3690 if (WARN_ON_ONCE(!mvm_sta)) 3691 goto unlock; 3692 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3693 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3694 mfp); 3695 3696 unlock: 3697 rcu_read_unlock(); 3698 } 3699 3700 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3701 struct ieee80211_sta *sta) 3702 { 3703 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3704 struct iwl_mvm_add_sta_cmd cmd = { 3705 .add_modify = STA_MODE_MODIFY, 3706 .sta_id = mvmsta->sta_id, 3707 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3708 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3709 }; 3710 int ret; 3711 3712 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3713 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3714 if (ret) 3715 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3716 } 3717 3718 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3719 struct ieee80211_sta *sta, 3720 enum ieee80211_frame_release_type reason, 3721 u16 cnt, u16 tids, bool more_data, 3722 bool single_sta_queue) 3723 { 3724 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3725 struct iwl_mvm_add_sta_cmd cmd = { 3726 .add_modify = STA_MODE_MODIFY, 3727 .sta_id = mvmsta->sta_id, 3728 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3729 .sleep_tx_count = cpu_to_le16(cnt), 3730 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3731 }; 3732 int tid, ret; 3733 unsigned long _tids = tids; 3734 3735 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3736 * Note that this field is reserved and unused by firmware not 3737 * supporting GO uAPSD, so it's safe to always do this. 3738 */ 3739 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3740 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3741 3742 /* If we're releasing frames from aggregation or dqa queues then check 3743 * if all the queues that we're releasing frames from, combined, have: 3744 * - more frames than the service period, in which case more_data 3745 * needs to be set 3746 * - fewer than 'cnt' frames, in which case we need to adjust the 3747 * firmware command (but do that unconditionally) 3748 */ 3749 if (single_sta_queue) { 3750 int remaining = cnt; 3751 int sleep_tx_count; 3752 3753 spin_lock_bh(&mvmsta->lock); 3754 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3755 struct iwl_mvm_tid_data *tid_data; 3756 u16 n_queued; 3757 3758 tid_data = &mvmsta->tid_data[tid]; 3759 3760 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3761 if (n_queued > remaining) { 3762 more_data = true; 3763 remaining = 0; 3764 break; 3765 } 3766 remaining -= n_queued; 3767 } 3768 sleep_tx_count = cnt - remaining; 3769 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3770 mvmsta->sleep_tx_count = sleep_tx_count; 3771 spin_unlock_bh(&mvmsta->lock); 3772 3773 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3774 if (WARN_ON(cnt - remaining == 0)) { 3775 ieee80211_sta_eosp(sta); 3776 return; 3777 } 3778 } 3779 3780 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3781 if (more_data) 3782 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3783 3784 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3785 mvmsta->next_status_eosp = true; 3786 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3787 } else { 3788 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3789 } 3790 3791 /* block the Tx queues until the FW updated the sleep Tx count */ 3792 iwl_trans_block_txq_ptrs(mvm->trans, true); 3793 3794 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3795 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3796 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3797 if (ret) 3798 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3799 } 3800 3801 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3802 struct iwl_rx_cmd_buffer *rxb) 3803 { 3804 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3805 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3806 struct ieee80211_sta *sta; 3807 u32 sta_id = le32_to_cpu(notif->sta_id); 3808 3809 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3810 return; 3811 3812 rcu_read_lock(); 3813 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3814 if (!IS_ERR_OR_NULL(sta)) 3815 ieee80211_sta_eosp(sta); 3816 rcu_read_unlock(); 3817 } 3818 3819 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3820 struct iwl_mvm_sta *mvmsta, bool disable) 3821 { 3822 struct iwl_mvm_add_sta_cmd cmd = { 3823 .add_modify = STA_MODE_MODIFY, 3824 .sta_id = mvmsta->sta_id, 3825 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3826 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3827 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3828 }; 3829 int ret; 3830 3831 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3832 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3833 if (ret) 3834 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3835 } 3836 3837 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3838 struct ieee80211_sta *sta, 3839 bool disable) 3840 { 3841 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3842 3843 spin_lock_bh(&mvm_sta->lock); 3844 3845 if (mvm_sta->disable_tx == disable) { 3846 spin_unlock_bh(&mvm_sta->lock); 3847 return; 3848 } 3849 3850 mvm_sta->disable_tx = disable; 3851 3852 /* 3853 * If sta PS state is handled by mac80211, tell it to start/stop 3854 * queuing tx for this station. 3855 */ 3856 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 3857 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3858 3859 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3860 3861 spin_unlock_bh(&mvm_sta->lock); 3862 } 3863 3864 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3865 struct iwl_mvm_vif *mvmvif, 3866 struct iwl_mvm_int_sta *sta, 3867 bool disable) 3868 { 3869 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3870 struct iwl_mvm_add_sta_cmd cmd = { 3871 .add_modify = STA_MODE_MODIFY, 3872 .sta_id = sta->sta_id, 3873 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3874 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3875 .mac_id_n_color = cpu_to_le32(id), 3876 }; 3877 int ret; 3878 3879 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3880 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3881 if (ret) 3882 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3883 } 3884 3885 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3886 struct iwl_mvm_vif *mvmvif, 3887 bool disable) 3888 { 3889 struct ieee80211_sta *sta; 3890 struct iwl_mvm_sta *mvm_sta; 3891 int i; 3892 3893 rcu_read_lock(); 3894 3895 /* Block/unblock all the stations of the given mvmvif */ 3896 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 3897 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 3898 if (IS_ERR_OR_NULL(sta)) 3899 continue; 3900 3901 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3902 if (mvm_sta->mac_id_n_color != 3903 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3904 continue; 3905 3906 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3907 } 3908 3909 rcu_read_unlock(); 3910 3911 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3912 return; 3913 3914 /* Need to block/unblock also multicast station */ 3915 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3916 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3917 &mvmvif->mcast_sta, disable); 3918 3919 /* 3920 * Only unblock the broadcast station (FW blocks it for immediate 3921 * quiet, not the driver) 3922 */ 3923 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3924 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3925 &mvmvif->bcast_sta, disable); 3926 } 3927 3928 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3929 { 3930 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3931 struct iwl_mvm_sta *mvmsta; 3932 3933 rcu_read_lock(); 3934 3935 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3936 3937 if (!WARN_ON(!mvmsta)) 3938 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3939 3940 rcu_read_unlock(); 3941 } 3942 3943 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3944 { 3945 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3946 3947 /* 3948 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3949 * to align the wrap around of ssn so we compare relevant values. 3950 */ 3951 if (mvm->trans->trans_cfg->gen2) 3952 sn &= 0xff; 3953 3954 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3955 } 3956 3957 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3958 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 3959 u8 *key, u32 key_len) 3960 { 3961 int ret; 3962 u16 queue; 3963 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3964 struct ieee80211_key_conf *keyconf; 3965 3966 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 3967 NL80211_IFTYPE_UNSPECIFIED, 3968 IWL_STA_LINK); 3969 if (ret) 3970 return ret; 3971 3972 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 3973 addr, sta, &queue, 3974 IWL_MVM_TX_FIFO_BE); 3975 if (ret) 3976 goto out; 3977 3978 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 3979 if (!keyconf) { 3980 ret = -ENOBUFS; 3981 goto out; 3982 } 3983 3984 keyconf->cipher = cipher; 3985 memcpy(keyconf->key, key, key_len); 3986 keyconf->keylen = key_len; 3987 3988 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 3989 0, NULL, 0, 0, true); 3990 kfree(keyconf); 3991 return 0; 3992 out: 3993 iwl_mvm_dealloc_int_sta(mvm, sta); 3994 return ret; 3995 } 3996