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_320: 94 case IEEE80211_STA_RX_BW_160: 95 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 96 fallthrough; 97 case IEEE80211_STA_RX_BW_80: 98 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 99 fallthrough; 100 case IEEE80211_STA_RX_BW_40: 101 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 102 fallthrough; 103 case IEEE80211_STA_RX_BW_20: 104 if (sta->ht_cap.ht_supported) 105 add_sta_cmd.station_flags |= 106 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 107 break; 108 } 109 110 switch (sta->rx_nss) { 111 case 1: 112 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 113 break; 114 case 2: 115 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 116 break; 117 case 3 ... 8: 118 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 119 break; 120 } 121 122 switch (sta->smps_mode) { 123 case IEEE80211_SMPS_AUTOMATIC: 124 case IEEE80211_SMPS_NUM_MODES: 125 WARN_ON(1); 126 break; 127 case IEEE80211_SMPS_STATIC: 128 /* override NSS */ 129 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 130 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 131 break; 132 case IEEE80211_SMPS_DYNAMIC: 133 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 134 break; 135 case IEEE80211_SMPS_OFF: 136 /* nothing */ 137 break; 138 } 139 140 if (sta->ht_cap.ht_supported) { 141 add_sta_cmd.station_flags_msk |= 142 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 143 STA_FLG_AGG_MPDU_DENS_MSK); 144 145 mpdu_dens = sta->ht_cap.ampdu_density; 146 } 147 148 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 149 add_sta_cmd.station_flags_msk |= 150 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 151 STA_FLG_AGG_MPDU_DENS_MSK); 152 153 mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, 154 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 155 agg_size = le16_get_bits(sta->he_6ghz_capa.capa, 156 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 157 } else 158 if (sta->vht_cap.vht_supported) { 159 agg_size = sta->vht_cap.cap & 160 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 161 agg_size >>= 162 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 163 } else if (sta->ht_cap.ht_supported) { 164 agg_size = sta->ht_cap.ampdu_factor; 165 } 166 167 /* D6.0 10.12.2 A-MPDU length limit rules 168 * A STA indicates the maximum length of the A-MPDU preEOF padding 169 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 170 * Exponent field in its HT Capabilities, VHT Capabilities, 171 * and HE 6 GHz Band Capabilities elements (if present) and the 172 * Maximum AMPDU Length Exponent Extension field in its HE 173 * Capabilities element 174 */ 175 if (sta->he_cap.has_he) 176 agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], 177 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 178 179 /* Limit to max A-MPDU supported by FW */ 180 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 181 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 182 STA_FLG_MAX_AGG_SIZE_SHIFT); 183 184 add_sta_cmd.station_flags |= 185 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 186 add_sta_cmd.station_flags |= 187 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 188 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 189 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 190 191 if (sta->wme) { 192 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 193 194 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 195 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 196 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 197 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 198 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 199 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 200 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 201 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 202 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 203 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 204 } 205 206 status = ADD_STA_SUCCESS; 207 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 208 iwl_mvm_add_sta_cmd_size(mvm), 209 &add_sta_cmd, &status); 210 if (ret) 211 return ret; 212 213 switch (status & IWL_ADD_STA_STATUS_MASK) { 214 case ADD_STA_SUCCESS: 215 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 216 break; 217 default: 218 ret = -EIO; 219 IWL_ERR(mvm, "ADD_STA failed\n"); 220 break; 221 } 222 223 return ret; 224 } 225 226 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 227 { 228 struct iwl_mvm_baid_data *data = 229 from_timer(data, t, session_timer); 230 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 231 struct iwl_mvm_baid_data *ba_data; 232 struct ieee80211_sta *sta; 233 struct iwl_mvm_sta *mvm_sta; 234 unsigned long timeout; 235 236 rcu_read_lock(); 237 238 ba_data = rcu_dereference(*rcu_ptr); 239 240 if (WARN_ON(!ba_data)) 241 goto unlock; 242 243 if (!ba_data->timeout) 244 goto unlock; 245 246 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 247 if (time_is_after_jiffies(timeout)) { 248 mod_timer(&ba_data->session_timer, timeout); 249 goto unlock; 250 } 251 252 /* Timer expired */ 253 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 254 255 /* 256 * sta should be valid unless the following happens: 257 * The firmware asserts which triggers a reconfig flow, but 258 * the reconfig fails before we set the pointer to sta into 259 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 260 * A-MDPU and hence the timer continues to run. Then, the 261 * timer expires and sta is NULL. 262 */ 263 if (!sta) 264 goto unlock; 265 266 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 267 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 268 sta->addr, ba_data->tid); 269 unlock: 270 rcu_read_unlock(); 271 } 272 273 /* Disable aggregations for a bitmap of TIDs for a given station */ 274 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 275 unsigned long disable_agg_tids, 276 bool remove_queue) 277 { 278 struct iwl_mvm_add_sta_cmd cmd = {}; 279 struct ieee80211_sta *sta; 280 struct iwl_mvm_sta *mvmsta; 281 u32 status; 282 u8 sta_id; 283 284 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 285 return -EINVAL; 286 287 sta_id = mvm->queue_info[queue].ra_sta_id; 288 289 rcu_read_lock(); 290 291 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 292 293 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 294 rcu_read_unlock(); 295 return -EINVAL; 296 } 297 298 mvmsta = iwl_mvm_sta_from_mac80211(sta); 299 300 mvmsta->tid_disable_agg |= disable_agg_tids; 301 302 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 303 cmd.sta_id = mvmsta->sta_id; 304 cmd.add_modify = STA_MODE_MODIFY; 305 cmd.modify_mask = STA_MODIFY_QUEUES; 306 if (disable_agg_tids) 307 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 308 if (remove_queue) 309 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 310 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 311 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 312 313 rcu_read_unlock(); 314 315 /* Notify FW of queue removal from the STA queues */ 316 status = ADD_STA_SUCCESS; 317 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 318 iwl_mvm_add_sta_cmd_size(mvm), 319 &cmd, &status); 320 } 321 322 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 323 u16 *queueptr, u8 tid, u8 flags) 324 { 325 int queue = *queueptr; 326 struct iwl_scd_txq_cfg_cmd cmd = { 327 .scd_queue = queue, 328 .action = SCD_CFG_DISABLE_QUEUE, 329 }; 330 int ret; 331 332 if (iwl_mvm_has_new_tx_api(mvm)) { 333 iwl_trans_txq_free(mvm->trans, queue); 334 *queueptr = IWL_MVM_INVALID_QUEUE; 335 336 return 0; 337 } 338 339 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 340 return 0; 341 342 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 343 344 cmd.action = mvm->queue_info[queue].tid_bitmap ? 345 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 346 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 347 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 348 349 IWL_DEBUG_TX_QUEUES(mvm, 350 "Disabling TXQ #%d tids=0x%x\n", 351 queue, 352 mvm->queue_info[queue].tid_bitmap); 353 354 /* If the queue is still enabled - nothing left to do in this func */ 355 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 356 return 0; 357 358 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 359 cmd.tid = mvm->queue_info[queue].txq_tid; 360 361 /* Make sure queue info is correct even though we overwrite it */ 362 WARN(mvm->queue_info[queue].tid_bitmap, 363 "TXQ #%d info out-of-sync - tids=0x%x\n", 364 queue, mvm->queue_info[queue].tid_bitmap); 365 366 /* If we are here - the queue is freed and we can zero out these vals */ 367 mvm->queue_info[queue].tid_bitmap = 0; 368 369 if (sta) { 370 struct iwl_mvm_txq *mvmtxq = 371 iwl_mvm_txq_from_tid(sta, tid); 372 373 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 374 } 375 376 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 377 mvm->queue_info[queue].reserved = false; 378 379 iwl_trans_txq_disable(mvm->trans, queue, false); 380 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 381 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 382 383 if (ret) 384 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 385 queue, ret); 386 return ret; 387 } 388 389 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 390 { 391 struct ieee80211_sta *sta; 392 struct iwl_mvm_sta *mvmsta; 393 unsigned long tid_bitmap; 394 unsigned long agg_tids = 0; 395 u8 sta_id; 396 int tid; 397 398 lockdep_assert_held(&mvm->mutex); 399 400 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 401 return -EINVAL; 402 403 sta_id = mvm->queue_info[queue].ra_sta_id; 404 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 405 406 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 407 lockdep_is_held(&mvm->mutex)); 408 409 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 410 return -EINVAL; 411 412 mvmsta = iwl_mvm_sta_from_mac80211(sta); 413 414 spin_lock_bh(&mvmsta->lock); 415 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 416 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 417 agg_tids |= BIT(tid); 418 } 419 spin_unlock_bh(&mvmsta->lock); 420 421 return agg_tids; 422 } 423 424 /* 425 * Remove a queue from a station's resources. 426 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 427 * doesn't disable the queue 428 */ 429 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 430 { 431 struct ieee80211_sta *sta; 432 struct iwl_mvm_sta *mvmsta; 433 unsigned long tid_bitmap; 434 unsigned long disable_agg_tids = 0; 435 u8 sta_id; 436 int tid; 437 438 lockdep_assert_held(&mvm->mutex); 439 440 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 441 return -EINVAL; 442 443 sta_id = mvm->queue_info[queue].ra_sta_id; 444 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 445 446 rcu_read_lock(); 447 448 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 449 450 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 451 rcu_read_unlock(); 452 return 0; 453 } 454 455 mvmsta = iwl_mvm_sta_from_mac80211(sta); 456 457 spin_lock_bh(&mvmsta->lock); 458 /* Unmap MAC queues and TIDs from this queue */ 459 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 460 struct iwl_mvm_txq *mvmtxq = 461 iwl_mvm_txq_from_tid(sta, tid); 462 463 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 464 disable_agg_tids |= BIT(tid); 465 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 466 467 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 468 } 469 470 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 471 spin_unlock_bh(&mvmsta->lock); 472 473 rcu_read_unlock(); 474 475 /* 476 * The TX path may have been using this TXQ_ID from the tid_data, 477 * so make sure it's no longer running so that we can safely reuse 478 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 479 * above, but nothing guarantees we've stopped using them. Thus, 480 * without this, we could get to iwl_mvm_disable_txq() and remove 481 * the queue while still sending frames to it. 482 */ 483 synchronize_net(); 484 485 return disable_agg_tids; 486 } 487 488 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 489 struct ieee80211_sta *old_sta, 490 u8 new_sta_id) 491 { 492 struct iwl_mvm_sta *mvmsta; 493 u8 sta_id, tid; 494 unsigned long disable_agg_tids = 0; 495 bool same_sta; 496 u16 queue_tmp = queue; 497 int ret; 498 499 lockdep_assert_held(&mvm->mutex); 500 501 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 502 return -EINVAL; 503 504 sta_id = mvm->queue_info[queue].ra_sta_id; 505 tid = mvm->queue_info[queue].txq_tid; 506 507 same_sta = sta_id == new_sta_id; 508 509 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 510 if (WARN_ON(!mvmsta)) 511 return -EINVAL; 512 513 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 514 /* Disable the queue */ 515 if (disable_agg_tids) 516 iwl_mvm_invalidate_sta_queue(mvm, queue, 517 disable_agg_tids, false); 518 519 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid, 0); 520 if (ret) { 521 IWL_ERR(mvm, 522 "Failed to free inactive queue %d (ret=%d)\n", 523 queue, ret); 524 525 return ret; 526 } 527 528 /* If TXQ is allocated to another STA, update removal in FW */ 529 if (!same_sta) 530 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 531 532 return 0; 533 } 534 535 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 536 unsigned long tfd_queue_mask, u8 ac) 537 { 538 int queue = 0; 539 u8 ac_to_queue[IEEE80211_NUM_ACS]; 540 int i; 541 542 /* 543 * This protects us against grabbing a queue that's being reconfigured 544 * by the inactivity checker. 545 */ 546 lockdep_assert_held(&mvm->mutex); 547 548 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 549 return -EINVAL; 550 551 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 552 553 /* See what ACs the existing queues for this STA have */ 554 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 555 /* Only DATA queues can be shared */ 556 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 557 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 558 continue; 559 560 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 561 } 562 563 /* 564 * The queue to share is chosen only from DATA queues as follows (in 565 * descending priority): 566 * 1. An AC_BE queue 567 * 2. Same AC queue 568 * 3. Highest AC queue that is lower than new AC 569 * 4. Any existing AC (there always is at least 1 DATA queue) 570 */ 571 572 /* Priority 1: An AC_BE queue */ 573 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 574 queue = ac_to_queue[IEEE80211_AC_BE]; 575 /* Priority 2: Same AC queue */ 576 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 577 queue = ac_to_queue[ac]; 578 /* Priority 3a: If new AC is VO and VI exists - use VI */ 579 else if (ac == IEEE80211_AC_VO && 580 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 581 queue = ac_to_queue[IEEE80211_AC_VI]; 582 /* Priority 3b: No BE so only AC less than the new one is BK */ 583 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 584 queue = ac_to_queue[IEEE80211_AC_BK]; 585 /* Priority 4a: No BE nor BK - use VI if exists */ 586 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 587 queue = ac_to_queue[IEEE80211_AC_VI]; 588 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 589 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 590 queue = ac_to_queue[IEEE80211_AC_VO]; 591 592 /* Make sure queue found (or not) is legal */ 593 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 594 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 595 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 596 IWL_ERR(mvm, "No DATA queues available to share\n"); 597 return -ENOSPC; 598 } 599 600 return queue; 601 } 602 603 /* 604 * If a given queue has a higher AC than the TID stream that is being compared 605 * to, the queue needs to be redirected to the lower AC. This function does that 606 * in such a case, otherwise - if no redirection required - it does nothing, 607 * unless the %force param is true. 608 */ 609 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 610 int ac, int ssn, unsigned int wdg_timeout, 611 bool force, struct iwl_mvm_txq *txq) 612 { 613 struct iwl_scd_txq_cfg_cmd cmd = { 614 .scd_queue = queue, 615 .action = SCD_CFG_DISABLE_QUEUE, 616 }; 617 bool shared_queue; 618 int ret; 619 620 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 621 return -EINVAL; 622 623 /* 624 * If the AC is lower than current one - FIFO needs to be redirected to 625 * the lowest one of the streams in the queue. Check if this is needed 626 * here. 627 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 628 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 629 * we need to check if the numerical value of X is LARGER than of Y. 630 */ 631 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 632 IWL_DEBUG_TX_QUEUES(mvm, 633 "No redirection needed on TXQ #%d\n", 634 queue); 635 return 0; 636 } 637 638 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 639 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 640 cmd.tid = mvm->queue_info[queue].txq_tid; 641 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 642 643 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 644 queue, iwl_mvm_ac_to_tx_fifo[ac]); 645 646 /* Stop the queue and wait for it to empty */ 647 txq->stopped = true; 648 649 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 650 if (ret) { 651 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 652 queue); 653 ret = -EIO; 654 goto out; 655 } 656 657 /* Before redirecting the queue we need to de-activate it */ 658 iwl_trans_txq_disable(mvm->trans, queue, false); 659 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 660 if (ret) 661 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 662 ret); 663 664 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 665 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 666 667 /* Update the TID "owner" of the queue */ 668 mvm->queue_info[queue].txq_tid = tid; 669 670 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 671 672 /* Redirect to lower AC */ 673 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 674 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 675 676 /* Update AC marking of the queue */ 677 mvm->queue_info[queue].mac80211_ac = ac; 678 679 /* 680 * Mark queue as shared in transport if shared 681 * Note this has to be done after queue enablement because enablement 682 * can also set this value, and there is no indication there to shared 683 * queues 684 */ 685 if (shared_queue) 686 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 687 688 out: 689 /* Continue using the queue */ 690 txq->stopped = false; 691 692 return ret; 693 } 694 695 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 696 u8 minq, u8 maxq) 697 { 698 int i; 699 700 lockdep_assert_held(&mvm->mutex); 701 702 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 703 "max queue %d >= num_of_queues (%d)", maxq, 704 mvm->trans->trans_cfg->base_params->num_of_queues)) 705 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 706 707 /* This should not be hit with new TX path */ 708 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 709 return -ENOSPC; 710 711 /* Start by looking for a free queue */ 712 for (i = minq; i <= maxq; i++) 713 if (mvm->queue_info[i].tid_bitmap == 0 && 714 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 715 return i; 716 717 return -ENOSPC; 718 } 719 720 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 721 u8 sta_id, u8 tid, unsigned int timeout) 722 { 723 int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, 724 mvm->trans->cfg->min_256_ba_txq_size); 725 726 if (tid == IWL_MAX_TID_COUNT) { 727 tid = IWL_MGMT_TID; 728 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 729 mvm->trans->cfg->min_txq_size); 730 } 731 732 do { 733 __le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); 734 735 queue = iwl_trans_txq_alloc(mvm->trans, enable, 736 sta_id, tid, SCD_QUEUE_CFG, 737 size, timeout); 738 739 if (queue < 0) 740 IWL_DEBUG_TX_QUEUES(mvm, 741 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 742 size, sta_id, tid, queue); 743 size /= 2; 744 } while (queue < 0 && size >= 16); 745 746 if (queue < 0) 747 return queue; 748 749 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 750 queue, sta_id, tid); 751 752 return queue; 753 } 754 755 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 756 struct ieee80211_sta *sta, u8 ac, 757 int tid) 758 { 759 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 760 struct iwl_mvm_txq *mvmtxq = 761 iwl_mvm_txq_from_tid(sta, tid); 762 unsigned int wdg_timeout = 763 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 764 int queue = -1; 765 766 lockdep_assert_held(&mvm->mutex); 767 768 IWL_DEBUG_TX_QUEUES(mvm, 769 "Allocating queue for sta %d on tid %d\n", 770 mvmsta->sta_id, tid); 771 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 772 if (queue < 0) 773 return queue; 774 775 mvmtxq->txq_id = queue; 776 mvm->tvqm_info[queue].txq_tid = tid; 777 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 778 779 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 780 781 spin_lock_bh(&mvmsta->lock); 782 mvmsta->tid_data[tid].txq_id = queue; 783 spin_unlock_bh(&mvmsta->lock); 784 785 return 0; 786 } 787 788 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 789 struct ieee80211_sta *sta, 790 int queue, u8 sta_id, u8 tid) 791 { 792 bool enable_queue = true; 793 794 /* Make sure this TID isn't already enabled */ 795 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 796 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 797 queue, tid); 798 return false; 799 } 800 801 /* Update mappings and refcounts */ 802 if (mvm->queue_info[queue].tid_bitmap) 803 enable_queue = false; 804 805 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 806 mvm->queue_info[queue].ra_sta_id = sta_id; 807 808 if (enable_queue) { 809 if (tid != IWL_MAX_TID_COUNT) 810 mvm->queue_info[queue].mac80211_ac = 811 tid_to_mac80211_ac[tid]; 812 else 813 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 814 815 mvm->queue_info[queue].txq_tid = tid; 816 } 817 818 if (sta) { 819 struct iwl_mvm_txq *mvmtxq = 820 iwl_mvm_txq_from_tid(sta, tid); 821 822 mvmtxq->txq_id = queue; 823 } 824 825 IWL_DEBUG_TX_QUEUES(mvm, 826 "Enabling TXQ #%d tids=0x%x\n", 827 queue, mvm->queue_info[queue].tid_bitmap); 828 829 return enable_queue; 830 } 831 832 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 833 int queue, u16 ssn, 834 const struct iwl_trans_txq_scd_cfg *cfg, 835 unsigned int wdg_timeout) 836 { 837 struct iwl_scd_txq_cfg_cmd cmd = { 838 .scd_queue = queue, 839 .action = SCD_CFG_ENABLE_QUEUE, 840 .window = cfg->frame_limit, 841 .sta_id = cfg->sta_id, 842 .ssn = cpu_to_le16(ssn), 843 .tx_fifo = cfg->fifo, 844 .aggregate = cfg->aggregate, 845 .tid = cfg->tid, 846 }; 847 bool inc_ssn; 848 849 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 850 return false; 851 852 /* Send the enabling command if we need to */ 853 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 854 return false; 855 856 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 857 NULL, wdg_timeout); 858 if (inc_ssn) 859 le16_add_cpu(&cmd.ssn, 1); 860 861 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 862 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 863 864 return inc_ssn; 865 } 866 867 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 868 { 869 struct iwl_scd_txq_cfg_cmd cmd = { 870 .scd_queue = queue, 871 .action = SCD_CFG_UPDATE_QUEUE_TID, 872 }; 873 int tid; 874 unsigned long tid_bitmap; 875 int ret; 876 877 lockdep_assert_held(&mvm->mutex); 878 879 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 880 return; 881 882 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 883 884 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 885 return; 886 887 /* Find any TID for queue */ 888 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 889 cmd.tid = tid; 890 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 891 892 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 893 if (ret) { 894 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 895 queue, ret); 896 return; 897 } 898 899 mvm->queue_info[queue].txq_tid = tid; 900 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 901 queue, tid); 902 } 903 904 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 905 { 906 struct ieee80211_sta *sta; 907 struct iwl_mvm_sta *mvmsta; 908 u8 sta_id; 909 int tid = -1; 910 unsigned long tid_bitmap; 911 unsigned int wdg_timeout; 912 int ssn; 913 int ret = true; 914 915 /* queue sharing is disabled on new TX path */ 916 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 917 return; 918 919 lockdep_assert_held(&mvm->mutex); 920 921 sta_id = mvm->queue_info[queue].ra_sta_id; 922 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 923 924 /* Find TID for queue, and make sure it is the only one on the queue */ 925 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 926 if (tid_bitmap != BIT(tid)) { 927 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 928 queue, tid_bitmap); 929 return; 930 } 931 932 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 933 tid); 934 935 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 936 lockdep_is_held(&mvm->mutex)); 937 938 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 939 return; 940 941 mvmsta = iwl_mvm_sta_from_mac80211(sta); 942 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 943 944 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 945 946 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 947 tid_to_mac80211_ac[tid], ssn, 948 wdg_timeout, true, 949 iwl_mvm_txq_from_tid(sta, tid)); 950 if (ret) { 951 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 952 return; 953 } 954 955 /* If aggs should be turned back on - do it */ 956 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 957 struct iwl_mvm_add_sta_cmd cmd = {0}; 958 959 mvmsta->tid_disable_agg &= ~BIT(tid); 960 961 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 962 cmd.sta_id = mvmsta->sta_id; 963 cmd.add_modify = STA_MODE_MODIFY; 964 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 965 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 966 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 967 968 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 969 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 970 if (!ret) { 971 IWL_DEBUG_TX_QUEUES(mvm, 972 "TXQ #%d is now aggregated again\n", 973 queue); 974 975 /* Mark queue intenally as aggregating again */ 976 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 977 } 978 } 979 980 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 981 } 982 983 /* 984 * Remove inactive TIDs of a given queue. 985 * If all queue TIDs are inactive - mark the queue as inactive 986 * If only some the queue TIDs are inactive - unmap them from the queue 987 * 988 * Returns %true if all TIDs were removed and the queue could be reused. 989 */ 990 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 991 struct iwl_mvm_sta *mvmsta, int queue, 992 unsigned long tid_bitmap, 993 unsigned long *unshare_queues, 994 unsigned long *changetid_queues) 995 { 996 int tid; 997 998 lockdep_assert_held(&mvmsta->lock); 999 lockdep_assert_held(&mvm->mutex); 1000 1001 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1002 return false; 1003 1004 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1005 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1006 /* If some TFDs are still queued - don't mark TID as inactive */ 1007 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1008 tid_bitmap &= ~BIT(tid); 1009 1010 /* Don't mark as inactive any TID that has an active BA */ 1011 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1012 tid_bitmap &= ~BIT(tid); 1013 } 1014 1015 /* If all TIDs in the queue are inactive - return it can be reused */ 1016 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1017 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1018 return true; 1019 } 1020 1021 /* 1022 * If we are here, this is a shared queue and not all TIDs timed-out. 1023 * Remove the ones that did. 1024 */ 1025 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1026 u16 tid_bitmap; 1027 1028 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1029 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1030 1031 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1032 1033 /* 1034 * We need to take into account a situation in which a TXQ was 1035 * allocated to TID x, and then turned shared by adding TIDs y 1036 * and z. If TID x becomes inactive and is removed from the TXQ, 1037 * ownership must be given to one of the remaining TIDs. 1038 * This is mainly because if TID x continues - a new queue can't 1039 * be allocated for it as long as it is an owner of another TXQ. 1040 * 1041 * Mark this queue in the right bitmap, we'll send the command 1042 * to the firmware later. 1043 */ 1044 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1045 set_bit(queue, changetid_queues); 1046 1047 IWL_DEBUG_TX_QUEUES(mvm, 1048 "Removing inactive TID %d from shared Q:%d\n", 1049 tid, queue); 1050 } 1051 1052 IWL_DEBUG_TX_QUEUES(mvm, 1053 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1054 mvm->queue_info[queue].tid_bitmap); 1055 1056 /* 1057 * There may be different TIDs with the same mac queues, so make 1058 * sure all TIDs have existing corresponding mac queues enabled 1059 */ 1060 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1061 1062 /* If the queue is marked as shared - "unshare" it */ 1063 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1064 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1065 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1066 queue); 1067 set_bit(queue, unshare_queues); 1068 } 1069 1070 return false; 1071 } 1072 1073 /* 1074 * Check for inactivity - this includes checking if any queue 1075 * can be unshared and finding one (and only one) that can be 1076 * reused. 1077 * This function is also invoked as a sort of clean-up task, 1078 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1079 * 1080 * Returns the queue number, or -ENOSPC. 1081 */ 1082 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1083 { 1084 unsigned long now = jiffies; 1085 unsigned long unshare_queues = 0; 1086 unsigned long changetid_queues = 0; 1087 int i, ret, free_queue = -ENOSPC; 1088 struct ieee80211_sta *queue_owner = NULL; 1089 1090 lockdep_assert_held(&mvm->mutex); 1091 1092 if (iwl_mvm_has_new_tx_api(mvm)) 1093 return -ENOSPC; 1094 1095 rcu_read_lock(); 1096 1097 /* we skip the CMD queue below by starting at 1 */ 1098 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1099 1100 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1101 struct ieee80211_sta *sta; 1102 struct iwl_mvm_sta *mvmsta; 1103 u8 sta_id; 1104 int tid; 1105 unsigned long inactive_tid_bitmap = 0; 1106 unsigned long queue_tid_bitmap; 1107 1108 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1109 if (!queue_tid_bitmap) 1110 continue; 1111 1112 /* If TXQ isn't in active use anyway - nothing to do here... */ 1113 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1114 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1115 continue; 1116 1117 /* Check to see if there are inactive TIDs on this queue */ 1118 for_each_set_bit(tid, &queue_tid_bitmap, 1119 IWL_MAX_TID_COUNT + 1) { 1120 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1121 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1122 continue; 1123 1124 inactive_tid_bitmap |= BIT(tid); 1125 } 1126 1127 /* If all TIDs are active - finish check on this queue */ 1128 if (!inactive_tid_bitmap) 1129 continue; 1130 1131 /* 1132 * If we are here - the queue hadn't been served recently and is 1133 * in use 1134 */ 1135 1136 sta_id = mvm->queue_info[i].ra_sta_id; 1137 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1138 1139 /* 1140 * If the STA doesn't exist anymore, it isn't an error. It could 1141 * be that it was removed since getting the queues, and in this 1142 * case it should've inactivated its queues anyway. 1143 */ 1144 if (IS_ERR_OR_NULL(sta)) 1145 continue; 1146 1147 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1148 1149 spin_lock_bh(&mvmsta->lock); 1150 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1151 inactive_tid_bitmap, 1152 &unshare_queues, 1153 &changetid_queues); 1154 if (ret && free_queue < 0) { 1155 queue_owner = sta; 1156 free_queue = i; 1157 } 1158 /* only unlock sta lock - we still need the queue info lock */ 1159 spin_unlock_bh(&mvmsta->lock); 1160 } 1161 1162 1163 /* Reconfigure queues requiring reconfiguation */ 1164 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1165 iwl_mvm_unshare_queue(mvm, i); 1166 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1167 iwl_mvm_change_queue_tid(mvm, i); 1168 1169 rcu_read_unlock(); 1170 1171 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1172 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1173 alloc_for_sta); 1174 if (ret) 1175 return ret; 1176 } 1177 1178 return free_queue; 1179 } 1180 1181 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1182 struct ieee80211_sta *sta, u8 ac, int tid) 1183 { 1184 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1185 struct iwl_trans_txq_scd_cfg cfg = { 1186 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1187 .sta_id = mvmsta->sta_id, 1188 .tid = tid, 1189 .frame_limit = IWL_FRAME_LIMIT, 1190 }; 1191 unsigned int wdg_timeout = 1192 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1193 int queue = -1; 1194 u16 queue_tmp; 1195 unsigned long disable_agg_tids = 0; 1196 enum iwl_mvm_agg_state queue_state; 1197 bool shared_queue = false, inc_ssn; 1198 int ssn; 1199 unsigned long tfd_queue_mask; 1200 int ret; 1201 1202 lockdep_assert_held(&mvm->mutex); 1203 1204 if (iwl_mvm_has_new_tx_api(mvm)) 1205 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1206 1207 spin_lock_bh(&mvmsta->lock); 1208 tfd_queue_mask = mvmsta->tfd_queue_msk; 1209 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1210 spin_unlock_bh(&mvmsta->lock); 1211 1212 if (tid == IWL_MAX_TID_COUNT) { 1213 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1214 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1215 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1216 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1217 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1218 queue); 1219 1220 /* If no such queue is found, we'll use a DATA queue instead */ 1221 } 1222 1223 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1224 (mvm->queue_info[mvmsta->reserved_queue].status == 1225 IWL_MVM_QUEUE_RESERVED)) { 1226 queue = mvmsta->reserved_queue; 1227 mvm->queue_info[queue].reserved = true; 1228 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1229 } 1230 1231 if (queue < 0) 1232 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1233 IWL_MVM_DQA_MIN_DATA_QUEUE, 1234 IWL_MVM_DQA_MAX_DATA_QUEUE); 1235 if (queue < 0) { 1236 /* try harder - perhaps kill an inactive queue */ 1237 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1238 } 1239 1240 /* No free queue - we'll have to share */ 1241 if (queue <= 0) { 1242 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1243 if (queue > 0) { 1244 shared_queue = true; 1245 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1246 } 1247 } 1248 1249 /* 1250 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1251 * to make sure no one else takes it. 1252 * This will allow avoiding re-acquiring the lock at the end of the 1253 * configuration. On error we'll mark it back as free. 1254 */ 1255 if (queue > 0 && !shared_queue) 1256 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1257 1258 /* This shouldn't happen - out of queues */ 1259 if (WARN_ON(queue <= 0)) { 1260 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1261 tid, cfg.sta_id); 1262 return queue; 1263 } 1264 1265 /* 1266 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1267 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1268 * as aggregatable. 1269 * Mark all DATA queues as allowing to be aggregated at some point 1270 */ 1271 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1272 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1273 1274 IWL_DEBUG_TX_QUEUES(mvm, 1275 "Allocating %squeue #%d to sta %d on tid %d\n", 1276 shared_queue ? "shared " : "", queue, 1277 mvmsta->sta_id, tid); 1278 1279 if (shared_queue) { 1280 /* Disable any open aggs on this queue */ 1281 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1282 1283 if (disable_agg_tids) { 1284 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1285 queue); 1286 iwl_mvm_invalidate_sta_queue(mvm, queue, 1287 disable_agg_tids, false); 1288 } 1289 } 1290 1291 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1292 1293 /* 1294 * Mark queue as shared in transport if shared 1295 * Note this has to be done after queue enablement because enablement 1296 * can also set this value, and there is no indication there to shared 1297 * queues 1298 */ 1299 if (shared_queue) 1300 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1301 1302 spin_lock_bh(&mvmsta->lock); 1303 /* 1304 * This looks racy, but it is not. We have only one packet for 1305 * this ra/tid in our Tx path since we stop the Qdisc when we 1306 * need to allocate a new TFD queue. 1307 */ 1308 if (inc_ssn) { 1309 mvmsta->tid_data[tid].seq_number += 0x10; 1310 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1311 } 1312 mvmsta->tid_data[tid].txq_id = queue; 1313 mvmsta->tfd_queue_msk |= BIT(queue); 1314 queue_state = mvmsta->tid_data[tid].state; 1315 1316 if (mvmsta->reserved_queue == queue) 1317 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1318 spin_unlock_bh(&mvmsta->lock); 1319 1320 if (!shared_queue) { 1321 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1322 if (ret) 1323 goto out_err; 1324 1325 /* If we need to re-enable aggregations... */ 1326 if (queue_state == IWL_AGG_ON) { 1327 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1328 if (ret) 1329 goto out_err; 1330 } 1331 } else { 1332 /* Redirect queue, if needed */ 1333 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1334 wdg_timeout, false, 1335 iwl_mvm_txq_from_tid(sta, tid)); 1336 if (ret) 1337 goto out_err; 1338 } 1339 1340 return 0; 1341 1342 out_err: 1343 queue_tmp = queue; 1344 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid, 0); 1345 1346 return ret; 1347 } 1348 1349 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1350 { 1351 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1352 add_stream_wk); 1353 1354 mutex_lock(&mvm->mutex); 1355 1356 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1357 1358 while (!list_empty(&mvm->add_stream_txqs)) { 1359 struct iwl_mvm_txq *mvmtxq; 1360 struct ieee80211_txq *txq; 1361 u8 tid; 1362 1363 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1364 struct iwl_mvm_txq, list); 1365 1366 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1367 drv_priv); 1368 tid = txq->tid; 1369 if (tid == IEEE80211_NUM_TIDS) 1370 tid = IWL_MAX_TID_COUNT; 1371 1372 /* 1373 * We can't really do much here, but if this fails we can't 1374 * transmit anyway - so just don't transmit the frame etc. 1375 * and let them back up ... we've tried our best to allocate 1376 * a queue in the function itself. 1377 */ 1378 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1379 list_del_init(&mvmtxq->list); 1380 continue; 1381 } 1382 1383 list_del_init(&mvmtxq->list); 1384 local_bh_disable(); 1385 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1386 local_bh_enable(); 1387 } 1388 1389 mutex_unlock(&mvm->mutex); 1390 } 1391 1392 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1393 struct ieee80211_sta *sta, 1394 enum nl80211_iftype vif_type) 1395 { 1396 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1397 int queue; 1398 1399 /* queue reserving is disabled on new TX path */ 1400 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1401 return 0; 1402 1403 /* run the general cleanup/unsharing of queues */ 1404 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1405 1406 /* Make sure we have free resources for this STA */ 1407 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1408 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1409 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1410 IWL_MVM_QUEUE_FREE)) 1411 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1412 else 1413 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1414 IWL_MVM_DQA_MIN_DATA_QUEUE, 1415 IWL_MVM_DQA_MAX_DATA_QUEUE); 1416 if (queue < 0) { 1417 /* try again - this time kick out a queue if needed */ 1418 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1419 if (queue < 0) { 1420 IWL_ERR(mvm, "No available queues for new station\n"); 1421 return -ENOSPC; 1422 } 1423 } 1424 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1425 1426 mvmsta->reserved_queue = queue; 1427 1428 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1429 queue, mvmsta->sta_id); 1430 1431 return 0; 1432 } 1433 1434 /* 1435 * In DQA mode, after a HW restart the queues should be allocated as before, in 1436 * order to avoid race conditions when there are shared queues. This function 1437 * does the re-mapping and queue allocation. 1438 * 1439 * Note that re-enabling aggregations isn't done in this function. 1440 */ 1441 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1442 struct ieee80211_sta *sta) 1443 { 1444 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1445 unsigned int wdg = 1446 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1447 int i; 1448 struct iwl_trans_txq_scd_cfg cfg = { 1449 .sta_id = mvm_sta->sta_id, 1450 .frame_limit = IWL_FRAME_LIMIT, 1451 }; 1452 1453 /* Make sure reserved queue is still marked as such (if allocated) */ 1454 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1455 mvm->queue_info[mvm_sta->reserved_queue].status = 1456 IWL_MVM_QUEUE_RESERVED; 1457 1458 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1459 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1460 int txq_id = tid_data->txq_id; 1461 int ac; 1462 1463 if (txq_id == IWL_MVM_INVALID_QUEUE) 1464 continue; 1465 1466 ac = tid_to_mac80211_ac[i]; 1467 1468 if (iwl_mvm_has_new_tx_api(mvm)) { 1469 IWL_DEBUG_TX_QUEUES(mvm, 1470 "Re-mapping sta %d tid %d\n", 1471 mvm_sta->sta_id, i); 1472 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1473 i, wdg); 1474 /* 1475 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1476 * to try again later, we have no other good way of 1477 * failing here 1478 */ 1479 if (txq_id < 0) 1480 txq_id = IWL_MVM_INVALID_QUEUE; 1481 tid_data->txq_id = txq_id; 1482 1483 /* 1484 * Since we don't set the seq number after reset, and HW 1485 * sets it now, FW reset will cause the seq num to start 1486 * at 0 again, so driver will need to update it 1487 * internally as well, so it keeps in sync with real val 1488 */ 1489 tid_data->seq_number = 0; 1490 } else { 1491 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1492 1493 cfg.tid = i; 1494 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1495 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1496 txq_id == 1497 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1498 1499 IWL_DEBUG_TX_QUEUES(mvm, 1500 "Re-mapping sta %d tid %d to queue %d\n", 1501 mvm_sta->sta_id, i, txq_id); 1502 1503 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1504 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1505 } 1506 } 1507 } 1508 1509 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1510 struct iwl_mvm_int_sta *sta, 1511 const u8 *addr, 1512 u16 mac_id, u16 color) 1513 { 1514 struct iwl_mvm_add_sta_cmd cmd; 1515 int ret; 1516 u32 status = ADD_STA_SUCCESS; 1517 1518 lockdep_assert_held(&mvm->mutex); 1519 1520 memset(&cmd, 0, sizeof(cmd)); 1521 cmd.sta_id = sta->sta_id; 1522 1523 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 1524 0) >= 12 && 1525 sta->type == IWL_STA_AUX_ACTIVITY) 1526 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1527 else 1528 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1529 color)); 1530 1531 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1532 cmd.station_type = sta->type; 1533 1534 if (!iwl_mvm_has_new_tx_api(mvm)) 1535 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1536 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1537 1538 if (addr) 1539 memcpy(cmd.addr, addr, ETH_ALEN); 1540 1541 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1542 iwl_mvm_add_sta_cmd_size(mvm), 1543 &cmd, &status); 1544 if (ret) 1545 return ret; 1546 1547 switch (status & IWL_ADD_STA_STATUS_MASK) { 1548 case ADD_STA_SUCCESS: 1549 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1550 return 0; 1551 default: 1552 ret = -EIO; 1553 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1554 status); 1555 break; 1556 } 1557 return ret; 1558 } 1559 1560 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1561 struct ieee80211_vif *vif, 1562 struct ieee80211_sta *sta) 1563 { 1564 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1565 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1566 struct iwl_mvm_rxq_dup_data *dup_data; 1567 int i, ret, sta_id; 1568 bool sta_update = false; 1569 unsigned int sta_flags = 0; 1570 1571 lockdep_assert_held(&mvm->mutex); 1572 1573 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1574 sta_id = iwl_mvm_find_free_sta_id(mvm, 1575 ieee80211_vif_type_p2p(vif)); 1576 else 1577 sta_id = mvm_sta->sta_id; 1578 1579 if (sta_id == IWL_MVM_INVALID_STA) 1580 return -ENOSPC; 1581 1582 spin_lock_init(&mvm_sta->lock); 1583 1584 /* if this is a HW restart re-alloc existing queues */ 1585 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1586 struct iwl_mvm_int_sta tmp_sta = { 1587 .sta_id = sta_id, 1588 .type = mvm_sta->sta_type, 1589 }; 1590 1591 /* 1592 * First add an empty station since allocating 1593 * a queue requires a valid station 1594 */ 1595 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1596 mvmvif->id, mvmvif->color); 1597 if (ret) 1598 goto err; 1599 1600 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1601 sta_update = true; 1602 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1603 goto update_fw; 1604 } 1605 1606 mvm_sta->sta_id = sta_id; 1607 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1608 mvmvif->color); 1609 mvm_sta->vif = vif; 1610 if (!mvm->trans->trans_cfg->gen2) 1611 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1612 else 1613 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1614 mvm_sta->tx_protection = 0; 1615 mvm_sta->tt_tx_protection = false; 1616 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1617 1618 /* HW restart, don't assume the memory has been zeroed */ 1619 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1620 mvm_sta->tfd_queue_msk = 0; 1621 1622 /* for HW restart - reset everything but the sequence number */ 1623 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1624 u16 seq = mvm_sta->tid_data[i].seq_number; 1625 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1626 mvm_sta->tid_data[i].seq_number = seq; 1627 1628 /* 1629 * Mark all queues for this STA as unallocated and defer TX 1630 * frames until the queue is allocated 1631 */ 1632 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1633 } 1634 1635 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1636 struct iwl_mvm_txq *mvmtxq = 1637 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1638 1639 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1640 INIT_LIST_HEAD(&mvmtxq->list); 1641 atomic_set(&mvmtxq->tx_request, 0); 1642 } 1643 1644 mvm_sta->agg_tids = 0; 1645 1646 if (iwl_mvm_has_new_rx_api(mvm) && 1647 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1648 int q; 1649 1650 dup_data = kcalloc(mvm->trans->num_rx_queues, 1651 sizeof(*dup_data), GFP_KERNEL); 1652 if (!dup_data) 1653 return -ENOMEM; 1654 /* 1655 * Initialize all the last_seq values to 0xffff which can never 1656 * compare equal to the frame's seq_ctrl in the check in 1657 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1658 * number and fragmented packets don't reach that function. 1659 * 1660 * This thus allows receiving a packet with seqno 0 and the 1661 * retry bit set as the very first packet on a new TID. 1662 */ 1663 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1664 memset(dup_data[q].last_seq, 0xff, 1665 sizeof(dup_data[q].last_seq)); 1666 mvm_sta->dup_data = dup_data; 1667 } 1668 1669 if (!iwl_mvm_has_new_tx_api(mvm)) { 1670 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1671 ieee80211_vif_type_p2p(vif)); 1672 if (ret) 1673 goto err; 1674 } 1675 1676 /* 1677 * if rs is registered with mac80211, then "add station" will be handled 1678 * via the corresponding ops, otherwise need to notify rate scaling here 1679 */ 1680 if (iwl_mvm_has_tlc_offload(mvm)) 1681 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1682 else 1683 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1684 1685 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1686 1687 update_fw: 1688 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1689 if (ret) 1690 goto err; 1691 1692 if (vif->type == NL80211_IFTYPE_STATION) { 1693 if (!sta->tdls) { 1694 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1695 mvmvif->ap_sta_id = sta_id; 1696 } else { 1697 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1698 } 1699 } 1700 1701 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1702 1703 return 0; 1704 1705 err: 1706 return ret; 1707 } 1708 1709 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1710 bool drain) 1711 { 1712 struct iwl_mvm_add_sta_cmd cmd = {}; 1713 int ret; 1714 u32 status; 1715 1716 lockdep_assert_held(&mvm->mutex); 1717 1718 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1719 cmd.sta_id = mvmsta->sta_id; 1720 cmd.add_modify = STA_MODE_MODIFY; 1721 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1722 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1723 1724 status = ADD_STA_SUCCESS; 1725 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1726 iwl_mvm_add_sta_cmd_size(mvm), 1727 &cmd, &status); 1728 if (ret) 1729 return ret; 1730 1731 switch (status & IWL_ADD_STA_STATUS_MASK) { 1732 case ADD_STA_SUCCESS: 1733 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1734 mvmsta->sta_id); 1735 break; 1736 default: 1737 ret = -EIO; 1738 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n", 1739 mvmsta->sta_id, status); 1740 break; 1741 } 1742 1743 return ret; 1744 } 1745 1746 /* 1747 * Remove a station from the FW table. Before sending the command to remove 1748 * the station validate that the station is indeed known to the driver (sanity 1749 * only). 1750 */ 1751 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1752 { 1753 struct ieee80211_sta *sta; 1754 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1755 .sta_id = sta_id, 1756 }; 1757 int ret; 1758 1759 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1760 lockdep_is_held(&mvm->mutex)); 1761 1762 /* Note: internal stations are marked as error values */ 1763 if (!sta) { 1764 IWL_ERR(mvm, "Invalid station id\n"); 1765 return -EINVAL; 1766 } 1767 1768 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1769 sizeof(rm_sta_cmd), &rm_sta_cmd); 1770 if (ret) { 1771 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1772 return ret; 1773 } 1774 1775 return 0; 1776 } 1777 1778 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1779 struct ieee80211_vif *vif, 1780 struct ieee80211_sta *sta) 1781 { 1782 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1783 int i; 1784 1785 lockdep_assert_held(&mvm->mutex); 1786 1787 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1788 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1789 continue; 1790 1791 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i, 1792 0); 1793 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1794 } 1795 1796 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1797 struct iwl_mvm_txq *mvmtxq = 1798 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1799 1800 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1801 } 1802 } 1803 1804 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1805 struct iwl_mvm_sta *mvm_sta) 1806 { 1807 int i; 1808 1809 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1810 u16 txq_id; 1811 int ret; 1812 1813 spin_lock_bh(&mvm_sta->lock); 1814 txq_id = mvm_sta->tid_data[i].txq_id; 1815 spin_unlock_bh(&mvm_sta->lock); 1816 1817 if (txq_id == IWL_MVM_INVALID_QUEUE) 1818 continue; 1819 1820 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1821 if (ret) 1822 return ret; 1823 } 1824 1825 return 0; 1826 } 1827 1828 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1829 struct ieee80211_vif *vif, 1830 struct ieee80211_sta *sta) 1831 { 1832 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1833 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1834 u8 sta_id = mvm_sta->sta_id; 1835 int ret; 1836 1837 lockdep_assert_held(&mvm->mutex); 1838 1839 if (iwl_mvm_has_new_rx_api(mvm)) { 1840 kfree(mvm_sta->dup_data); 1841 mvm_sta->dup_data = NULL; 1842 } 1843 1844 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1845 if (ret) 1846 return ret; 1847 1848 /* flush its queues here since we are freeing mvm_sta */ 1849 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1850 if (ret) 1851 return ret; 1852 if (iwl_mvm_has_new_tx_api(mvm)) { 1853 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1854 } else { 1855 u32 q_mask = mvm_sta->tfd_queue_msk; 1856 1857 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1858 q_mask); 1859 } 1860 if (ret) 1861 return ret; 1862 1863 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1864 1865 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1866 1867 /* If there is a TXQ still marked as reserved - free it */ 1868 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1869 u8 reserved_txq = mvm_sta->reserved_queue; 1870 enum iwl_mvm_queue_status *status; 1871 1872 /* 1873 * If no traffic has gone through the reserved TXQ - it 1874 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1875 * should be manually marked as free again 1876 */ 1877 status = &mvm->queue_info[reserved_txq].status; 1878 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1879 (*status != IWL_MVM_QUEUE_FREE), 1880 "sta_id %d reserved txq %d status %d", 1881 sta_id, reserved_txq, *status)) 1882 return -EINVAL; 1883 1884 *status = IWL_MVM_QUEUE_FREE; 1885 } 1886 1887 if (vif->type == NL80211_IFTYPE_STATION && 1888 mvmvif->ap_sta_id == sta_id) { 1889 /* if associated - we can't remove the AP STA now */ 1890 if (vif->bss_conf.assoc) 1891 return ret; 1892 1893 /* unassoc - go ahead - remove the AP STA now */ 1894 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1895 } 1896 1897 /* 1898 * This shouldn't happen - the TDLS channel switch should be canceled 1899 * before the STA is removed. 1900 */ 1901 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1902 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1903 cancel_delayed_work(&mvm->tdls_cs.dwork); 1904 } 1905 1906 /* 1907 * Make sure that the tx response code sees the station as -EBUSY and 1908 * calls the drain worker. 1909 */ 1910 spin_lock_bh(&mvm_sta->lock); 1911 spin_unlock_bh(&mvm_sta->lock); 1912 1913 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1914 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1915 1916 return ret; 1917 } 1918 1919 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1920 struct ieee80211_vif *vif, 1921 u8 sta_id) 1922 { 1923 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1924 1925 lockdep_assert_held(&mvm->mutex); 1926 1927 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1928 return ret; 1929 } 1930 1931 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1932 struct iwl_mvm_int_sta *sta, 1933 u32 qmask, enum nl80211_iftype iftype, 1934 enum iwl_sta_type type) 1935 { 1936 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1937 sta->sta_id == IWL_MVM_INVALID_STA) { 1938 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1939 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1940 return -ENOSPC; 1941 } 1942 1943 sta->tfd_queue_msk = qmask; 1944 sta->type = type; 1945 1946 /* put a non-NULL value so iterating over the stations won't stop */ 1947 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1948 return 0; 1949 } 1950 1951 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1952 { 1953 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1954 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1955 sta->sta_id = IWL_MVM_INVALID_STA; 1956 } 1957 1958 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 1959 u8 sta_id, u8 fifo) 1960 { 1961 unsigned int wdg_timeout = 1962 mvm->trans->trans_cfg->base_params->wd_timeout; 1963 struct iwl_trans_txq_scd_cfg cfg = { 1964 .fifo = fifo, 1965 .sta_id = sta_id, 1966 .tid = IWL_MAX_TID_COUNT, 1967 .aggregate = false, 1968 .frame_limit = IWL_FRAME_LIMIT, 1969 }; 1970 1971 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 1972 1973 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 1974 } 1975 1976 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 1977 { 1978 unsigned int wdg_timeout = 1979 mvm->trans->trans_cfg->base_params->wd_timeout; 1980 1981 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 1982 1983 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 1984 wdg_timeout); 1985 } 1986 1987 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 1988 int maccolor, u8 *addr, 1989 struct iwl_mvm_int_sta *sta, 1990 u16 *queue, int fifo) 1991 { 1992 int ret; 1993 1994 /* Map queue to fifo - needs to happen before adding station */ 1995 if (!iwl_mvm_has_new_tx_api(mvm)) 1996 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 1997 1998 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 1999 if (ret) { 2000 if (!iwl_mvm_has_new_tx_api(mvm)) 2001 iwl_mvm_disable_txq(mvm, NULL, queue, 2002 IWL_MAX_TID_COUNT, 0); 2003 return ret; 2004 } 2005 2006 /* 2007 * For 22000 firmware and on we cannot add queue to a station unknown 2008 * to firmware so enable queue here - after the station was added 2009 */ 2010 if (iwl_mvm_has_new_tx_api(mvm)) { 2011 int txq; 2012 2013 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2014 if (txq < 0) { 2015 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2016 return txq; 2017 } 2018 2019 *queue = txq; 2020 } 2021 2022 return 0; 2023 } 2024 2025 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2026 { 2027 int ret; 2028 2029 lockdep_assert_held(&mvm->mutex); 2030 2031 /* Allocate aux station and assign to it the aux queue */ 2032 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2033 NL80211_IFTYPE_UNSPECIFIED, 2034 IWL_STA_AUX_ACTIVITY); 2035 if (ret) 2036 return ret; 2037 2038 /* 2039 * In CDB NICs we need to specify which lmac to use for aux activity 2040 * using the mac_id argument place to send lmac_id to the function 2041 */ 2042 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2043 &mvm->aux_sta, &mvm->aux_queue, 2044 IWL_MVM_TX_FIFO_MCAST); 2045 if (ret) { 2046 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2047 return ret; 2048 } 2049 2050 return 0; 2051 } 2052 2053 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2054 { 2055 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2056 2057 lockdep_assert_held(&mvm->mutex); 2058 2059 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2060 NULL, &mvm->snif_sta, 2061 &mvm->snif_queue, 2062 IWL_MVM_TX_FIFO_BE); 2063 } 2064 2065 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2066 { 2067 int ret; 2068 2069 lockdep_assert_held(&mvm->mutex); 2070 2071 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2072 return -EINVAL; 2073 2074 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT, 0); 2075 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2076 if (ret) 2077 IWL_WARN(mvm, "Failed sending remove station\n"); 2078 2079 return ret; 2080 } 2081 2082 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2083 { 2084 int ret; 2085 2086 lockdep_assert_held(&mvm->mutex); 2087 2088 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2089 return -EINVAL; 2090 2091 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT, 0); 2092 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2093 if (ret) 2094 IWL_WARN(mvm, "Failed sending remove station\n"); 2095 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2096 2097 return ret; 2098 } 2099 2100 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2101 { 2102 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2103 } 2104 2105 /* 2106 * Send the add station command for the vif's broadcast station. 2107 * Assumes that the station was already allocated. 2108 * 2109 * @mvm: the mvm component 2110 * @vif: the interface to which the broadcast station is added 2111 * @bsta: the broadcast station to add. 2112 */ 2113 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2114 { 2115 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2116 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2117 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2118 const u8 *baddr = _baddr; 2119 int queue; 2120 int ret; 2121 unsigned int wdg_timeout = 2122 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2123 struct iwl_trans_txq_scd_cfg cfg = { 2124 .fifo = IWL_MVM_TX_FIFO_VO, 2125 .sta_id = mvmvif->bcast_sta.sta_id, 2126 .tid = IWL_MAX_TID_COUNT, 2127 .aggregate = false, 2128 .frame_limit = IWL_FRAME_LIMIT, 2129 }; 2130 2131 lockdep_assert_held(&mvm->mutex); 2132 2133 if (!iwl_mvm_has_new_tx_api(mvm)) { 2134 if (vif->type == NL80211_IFTYPE_AP || 2135 vif->type == NL80211_IFTYPE_ADHOC) { 2136 queue = mvm->probe_queue; 2137 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2138 queue = mvm->p2p_dev_queue; 2139 } else { 2140 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2141 return -EINVAL; 2142 } 2143 2144 bsta->tfd_queue_msk |= BIT(queue); 2145 2146 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2147 } 2148 2149 if (vif->type == NL80211_IFTYPE_ADHOC) 2150 baddr = vif->bss_conf.bssid; 2151 2152 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2153 return -ENOSPC; 2154 2155 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2156 mvmvif->id, mvmvif->color); 2157 if (ret) 2158 return ret; 2159 2160 /* 2161 * For 22000 firmware and on we cannot add queue to a station unknown 2162 * to firmware so enable queue here - after the station was added 2163 */ 2164 if (iwl_mvm_has_new_tx_api(mvm)) { 2165 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2166 IWL_MAX_TID_COUNT, 2167 wdg_timeout); 2168 if (queue < 0) { 2169 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2170 return queue; 2171 } 2172 2173 if (vif->type == NL80211_IFTYPE_AP || 2174 vif->type == NL80211_IFTYPE_ADHOC) 2175 mvm->probe_queue = queue; 2176 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2177 mvm->p2p_dev_queue = queue; 2178 } 2179 2180 return 0; 2181 } 2182 2183 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2184 struct ieee80211_vif *vif) 2185 { 2186 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2187 u16 *queueptr, queue; 2188 2189 lockdep_assert_held(&mvm->mutex); 2190 2191 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2192 2193 switch (vif->type) { 2194 case NL80211_IFTYPE_AP: 2195 case NL80211_IFTYPE_ADHOC: 2196 queueptr = &mvm->probe_queue; 2197 break; 2198 case NL80211_IFTYPE_P2P_DEVICE: 2199 queueptr = &mvm->p2p_dev_queue; 2200 break; 2201 default: 2202 WARN(1, "Can't free bcast queue on vif type %d\n", 2203 vif->type); 2204 return; 2205 } 2206 2207 queue = *queueptr; 2208 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT, 0); 2209 if (iwl_mvm_has_new_tx_api(mvm)) 2210 return; 2211 2212 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2213 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2214 } 2215 2216 /* Send the FW a request to remove the station from it's internal data 2217 * structures, but DO NOT remove the entry from the local data structures. */ 2218 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2219 { 2220 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2221 int ret; 2222 2223 lockdep_assert_held(&mvm->mutex); 2224 2225 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2226 2227 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2228 if (ret) 2229 IWL_WARN(mvm, "Failed sending remove station\n"); 2230 return ret; 2231 } 2232 2233 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2234 { 2235 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2236 2237 lockdep_assert_held(&mvm->mutex); 2238 2239 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2240 ieee80211_vif_type_p2p(vif), 2241 IWL_STA_GENERAL_PURPOSE); 2242 } 2243 2244 /* Allocate a new station entry for the broadcast station to the given vif, 2245 * and send it to the FW. 2246 * Note that each P2P mac should have its own broadcast station. 2247 * 2248 * @mvm: the mvm component 2249 * @vif: the interface to which the broadcast station is added 2250 * @bsta: the broadcast station to add. */ 2251 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2252 { 2253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2254 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2255 int ret; 2256 2257 lockdep_assert_held(&mvm->mutex); 2258 2259 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2260 if (ret) 2261 return ret; 2262 2263 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2264 2265 if (ret) 2266 iwl_mvm_dealloc_int_sta(mvm, bsta); 2267 2268 return ret; 2269 } 2270 2271 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2272 { 2273 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2274 2275 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2276 } 2277 2278 /* 2279 * Send the FW a request to remove the station from it's internal data 2280 * structures, and in addition remove it from the local data structure. 2281 */ 2282 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2283 { 2284 int ret; 2285 2286 lockdep_assert_held(&mvm->mutex); 2287 2288 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2289 2290 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2291 2292 return ret; 2293 } 2294 2295 /* 2296 * Allocate a new station entry for the multicast station to the given vif, 2297 * and send it to the FW. 2298 * Note that each AP/GO mac should have its own multicast station. 2299 * 2300 * @mvm: the mvm component 2301 * @vif: the interface to which the multicast station is added 2302 */ 2303 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2304 { 2305 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2306 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2307 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2308 const u8 *maddr = _maddr; 2309 struct iwl_trans_txq_scd_cfg cfg = { 2310 .fifo = vif->type == NL80211_IFTYPE_AP ? 2311 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2312 .sta_id = msta->sta_id, 2313 .tid = 0, 2314 .aggregate = false, 2315 .frame_limit = IWL_FRAME_LIMIT, 2316 }; 2317 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2318 int ret; 2319 2320 lockdep_assert_held(&mvm->mutex); 2321 2322 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2323 vif->type != NL80211_IFTYPE_ADHOC)) 2324 return -ENOTSUPP; 2325 2326 /* 2327 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2328 * invalid, so make sure we use the queue we want. 2329 * Note that this is done here as we want to avoid making DQA 2330 * changes in mac80211 layer. 2331 */ 2332 if (vif->type == NL80211_IFTYPE_ADHOC) 2333 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2334 2335 /* 2336 * While in previous FWs we had to exclude cab queue from TFD queue 2337 * mask, now it is needed as any other queue. 2338 */ 2339 if (!iwl_mvm_has_new_tx_api(mvm) && 2340 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2341 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2342 timeout); 2343 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2344 } 2345 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2346 mvmvif->id, mvmvif->color); 2347 if (ret) 2348 goto err; 2349 2350 /* 2351 * Enable cab queue after the ADD_STA command is sent. 2352 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2353 * command with unknown station id, and for FW that doesn't support 2354 * station API since the cab queue is not included in the 2355 * tfd_queue_mask. 2356 */ 2357 if (iwl_mvm_has_new_tx_api(mvm)) { 2358 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2359 0, 2360 timeout); 2361 if (queue < 0) { 2362 ret = queue; 2363 goto err; 2364 } 2365 mvmvif->cab_queue = queue; 2366 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2367 IWL_UCODE_TLV_API_STA_TYPE)) 2368 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2369 timeout); 2370 2371 return 0; 2372 err: 2373 iwl_mvm_dealloc_int_sta(mvm, msta); 2374 return ret; 2375 } 2376 2377 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2378 struct ieee80211_key_conf *keyconf, 2379 bool mcast) 2380 { 2381 union { 2382 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2383 struct iwl_mvm_add_sta_key_cmd cmd; 2384 } u = {}; 2385 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2386 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2387 __le16 key_flags; 2388 int ret, size; 2389 u32 status; 2390 2391 /* This is a valid situation for GTK removal */ 2392 if (sta_id == IWL_MVM_INVALID_STA) 2393 return 0; 2394 2395 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2396 STA_KEY_FLG_KEYID_MSK); 2397 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2398 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2399 2400 if (mcast) 2401 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2402 2403 /* 2404 * The fields assigned here are in the same location at the start 2405 * of the command, so we can do this union trick. 2406 */ 2407 u.cmd.common.key_flags = key_flags; 2408 u.cmd.common.key_offset = keyconf->hw_key_idx; 2409 u.cmd.common.sta_id = sta_id; 2410 2411 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2412 2413 status = ADD_STA_SUCCESS; 2414 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2415 &status); 2416 2417 switch (status) { 2418 case ADD_STA_SUCCESS: 2419 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2420 break; 2421 default: 2422 ret = -EIO; 2423 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2424 break; 2425 } 2426 2427 return ret; 2428 } 2429 2430 /* 2431 * Send the FW a request to remove the station from it's internal data 2432 * structures, and in addition remove it from the local data structure. 2433 */ 2434 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2435 { 2436 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2437 int ret; 2438 2439 lockdep_assert_held(&mvm->mutex); 2440 2441 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2442 2443 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0, 0); 2444 2445 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2446 if (ret) 2447 IWL_WARN(mvm, "Failed sending remove station\n"); 2448 2449 return ret; 2450 } 2451 2452 #define IWL_MAX_RX_BA_SESSIONS 16 2453 2454 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2455 { 2456 struct iwl_mvm_delba_data notif = { 2457 .baid = baid, 2458 }; 2459 2460 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2461 ¬if, sizeof(notif)); 2462 }; 2463 2464 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2465 struct iwl_mvm_baid_data *data) 2466 { 2467 int i; 2468 2469 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2470 2471 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2472 int j; 2473 struct iwl_mvm_reorder_buffer *reorder_buf = 2474 &data->reorder_buf[i]; 2475 struct iwl_mvm_reorder_buf_entry *entries = 2476 &data->entries[i * data->entries_per_queue]; 2477 2478 spin_lock_bh(&reorder_buf->lock); 2479 if (likely(!reorder_buf->num_stored)) { 2480 spin_unlock_bh(&reorder_buf->lock); 2481 continue; 2482 } 2483 2484 /* 2485 * This shouldn't happen in regular DELBA since the internal 2486 * delBA notification should trigger a release of all frames in 2487 * the reorder buffer. 2488 */ 2489 WARN_ON(1); 2490 2491 for (j = 0; j < reorder_buf->buf_size; j++) 2492 __skb_queue_purge(&entries[j].e.frames); 2493 /* 2494 * Prevent timer re-arm. This prevents a very far fetched case 2495 * where we timed out on the notification. There may be prior 2496 * RX frames pending in the RX queue before the notification 2497 * that might get processed between now and the actual deletion 2498 * and we would re-arm the timer although we are deleting the 2499 * reorder buffer. 2500 */ 2501 reorder_buf->removed = true; 2502 spin_unlock_bh(&reorder_buf->lock); 2503 del_timer_sync(&reorder_buf->reorder_timer); 2504 } 2505 } 2506 2507 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2508 struct iwl_mvm_baid_data *data, 2509 u16 ssn, u16 buf_size) 2510 { 2511 int i; 2512 2513 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2514 struct iwl_mvm_reorder_buffer *reorder_buf = 2515 &data->reorder_buf[i]; 2516 struct iwl_mvm_reorder_buf_entry *entries = 2517 &data->entries[i * data->entries_per_queue]; 2518 int j; 2519 2520 reorder_buf->num_stored = 0; 2521 reorder_buf->head_sn = ssn; 2522 reorder_buf->buf_size = buf_size; 2523 /* rx reorder timer */ 2524 timer_setup(&reorder_buf->reorder_timer, 2525 iwl_mvm_reorder_timer_expired, 0); 2526 spin_lock_init(&reorder_buf->lock); 2527 reorder_buf->mvm = mvm; 2528 reorder_buf->queue = i; 2529 reorder_buf->valid = false; 2530 for (j = 0; j < reorder_buf->buf_size; j++) 2531 __skb_queue_head_init(&entries[j].e.frames); 2532 } 2533 } 2534 2535 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2536 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2537 { 2538 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2539 struct iwl_mvm_add_sta_cmd cmd = {}; 2540 struct iwl_mvm_baid_data *baid_data = NULL; 2541 int ret; 2542 u32 status; 2543 2544 lockdep_assert_held(&mvm->mutex); 2545 2546 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2547 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2548 return -ENOSPC; 2549 } 2550 2551 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2552 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2553 2554 /* sparse doesn't like the __align() so don't check */ 2555 #ifndef __CHECKER__ 2556 /* 2557 * The division below will be OK if either the cache line size 2558 * can be divided by the entry size (ALIGN will round up) or if 2559 * if the entry size can be divided by the cache line size, in 2560 * which case the ALIGN() will do nothing. 2561 */ 2562 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2563 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2564 #endif 2565 2566 /* 2567 * Upward align the reorder buffer size to fill an entire cache 2568 * line for each queue, to avoid sharing cache lines between 2569 * different queues. 2570 */ 2571 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2572 2573 /* 2574 * Allocate here so if allocation fails we can bail out early 2575 * before starting the BA session in the firmware 2576 */ 2577 baid_data = kzalloc(sizeof(*baid_data) + 2578 mvm->trans->num_rx_queues * 2579 reorder_buf_size, 2580 GFP_KERNEL); 2581 if (!baid_data) 2582 return -ENOMEM; 2583 2584 /* 2585 * This division is why we need the above BUILD_BUG_ON(), 2586 * if that doesn't hold then this will not be right. 2587 */ 2588 baid_data->entries_per_queue = 2589 reorder_buf_size / sizeof(baid_data->entries[0]); 2590 } 2591 2592 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2593 cmd.sta_id = mvm_sta->sta_id; 2594 cmd.add_modify = STA_MODE_MODIFY; 2595 if (start) { 2596 cmd.add_immediate_ba_tid = (u8) tid; 2597 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2598 cmd.rx_ba_window = cpu_to_le16(buf_size); 2599 } else { 2600 cmd.remove_immediate_ba_tid = (u8) tid; 2601 } 2602 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2603 STA_MODIFY_REMOVE_BA_TID; 2604 2605 status = ADD_STA_SUCCESS; 2606 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2607 iwl_mvm_add_sta_cmd_size(mvm), 2608 &cmd, &status); 2609 if (ret) 2610 goto out_free; 2611 2612 switch (status & IWL_ADD_STA_STATUS_MASK) { 2613 case ADD_STA_SUCCESS: 2614 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2615 start ? "start" : "stopp"); 2616 break; 2617 case ADD_STA_IMMEDIATE_BA_FAILURE: 2618 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2619 ret = -ENOSPC; 2620 break; 2621 default: 2622 ret = -EIO; 2623 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2624 start ? "start" : "stopp", status); 2625 break; 2626 } 2627 2628 if (ret) 2629 goto out_free; 2630 2631 if (start) { 2632 u8 baid; 2633 2634 mvm->rx_ba_sessions++; 2635 2636 if (!iwl_mvm_has_new_rx_api(mvm)) 2637 return 0; 2638 2639 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2640 ret = -EINVAL; 2641 goto out_free; 2642 } 2643 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2644 IWL_ADD_STA_BAID_SHIFT); 2645 baid_data->baid = baid; 2646 baid_data->timeout = timeout; 2647 baid_data->last_rx = jiffies; 2648 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2649 timer_setup(&baid_data->session_timer, 2650 iwl_mvm_rx_agg_session_expired, 0); 2651 baid_data->mvm = mvm; 2652 baid_data->tid = tid; 2653 baid_data->sta_id = mvm_sta->sta_id; 2654 2655 mvm_sta->tid_to_baid[tid] = baid; 2656 if (timeout) 2657 mod_timer(&baid_data->session_timer, 2658 TU_TO_EXP_TIME(timeout * 2)); 2659 2660 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2661 /* 2662 * protect the BA data with RCU to cover a case where our 2663 * internal RX sync mechanism will timeout (not that it's 2664 * supposed to happen) and we will free the session data while 2665 * RX is being processed in parallel 2666 */ 2667 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2668 mvm_sta->sta_id, tid, baid); 2669 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2670 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2671 } else { 2672 u8 baid = mvm_sta->tid_to_baid[tid]; 2673 2674 if (mvm->rx_ba_sessions > 0) 2675 /* check that restart flow didn't zero the counter */ 2676 mvm->rx_ba_sessions--; 2677 if (!iwl_mvm_has_new_rx_api(mvm)) 2678 return 0; 2679 2680 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2681 return -EINVAL; 2682 2683 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2684 if (WARN_ON(!baid_data)) 2685 return -EINVAL; 2686 2687 /* synchronize all rx queues so we can safely delete */ 2688 iwl_mvm_free_reorder(mvm, baid_data); 2689 del_timer_sync(&baid_data->session_timer); 2690 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2691 kfree_rcu(baid_data, rcu_head); 2692 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2693 } 2694 return 0; 2695 2696 out_free: 2697 kfree(baid_data); 2698 return ret; 2699 } 2700 2701 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2702 int tid, u8 queue, bool start) 2703 { 2704 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2705 struct iwl_mvm_add_sta_cmd cmd = {}; 2706 int ret; 2707 u32 status; 2708 2709 lockdep_assert_held(&mvm->mutex); 2710 2711 if (start) { 2712 mvm_sta->tfd_queue_msk |= BIT(queue); 2713 mvm_sta->tid_disable_agg &= ~BIT(tid); 2714 } else { 2715 /* In DQA-mode the queue isn't removed on agg termination */ 2716 mvm_sta->tid_disable_agg |= BIT(tid); 2717 } 2718 2719 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2720 cmd.sta_id = mvm_sta->sta_id; 2721 cmd.add_modify = STA_MODE_MODIFY; 2722 if (!iwl_mvm_has_new_tx_api(mvm)) 2723 cmd.modify_mask = STA_MODIFY_QUEUES; 2724 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2725 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2726 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2727 2728 status = ADD_STA_SUCCESS; 2729 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2730 iwl_mvm_add_sta_cmd_size(mvm), 2731 &cmd, &status); 2732 if (ret) 2733 return ret; 2734 2735 switch (status & IWL_ADD_STA_STATUS_MASK) { 2736 case ADD_STA_SUCCESS: 2737 break; 2738 default: 2739 ret = -EIO; 2740 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2741 start ? "start" : "stopp", status); 2742 break; 2743 } 2744 2745 return ret; 2746 } 2747 2748 const u8 tid_to_mac80211_ac[] = { 2749 IEEE80211_AC_BE, 2750 IEEE80211_AC_BK, 2751 IEEE80211_AC_BK, 2752 IEEE80211_AC_BE, 2753 IEEE80211_AC_VI, 2754 IEEE80211_AC_VI, 2755 IEEE80211_AC_VO, 2756 IEEE80211_AC_VO, 2757 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2758 }; 2759 2760 static const u8 tid_to_ucode_ac[] = { 2761 AC_BE, 2762 AC_BK, 2763 AC_BK, 2764 AC_BE, 2765 AC_VI, 2766 AC_VI, 2767 AC_VO, 2768 AC_VO, 2769 }; 2770 2771 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2772 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2773 { 2774 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2775 struct iwl_mvm_tid_data *tid_data; 2776 u16 normalized_ssn; 2777 u16 txq_id; 2778 int ret; 2779 2780 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2781 return -EINVAL; 2782 2783 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2784 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2785 IWL_ERR(mvm, 2786 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2787 mvmsta->tid_data[tid].state); 2788 return -ENXIO; 2789 } 2790 2791 lockdep_assert_held(&mvm->mutex); 2792 2793 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2794 iwl_mvm_has_new_tx_api(mvm)) { 2795 u8 ac = tid_to_mac80211_ac[tid]; 2796 2797 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2798 if (ret) 2799 return ret; 2800 } 2801 2802 spin_lock_bh(&mvmsta->lock); 2803 2804 /* 2805 * Note the possible cases: 2806 * 1. An enabled TXQ - TXQ needs to become agg'ed 2807 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2808 * it as reserved 2809 */ 2810 txq_id = mvmsta->tid_data[tid].txq_id; 2811 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2812 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2813 IWL_MVM_DQA_MIN_DATA_QUEUE, 2814 IWL_MVM_DQA_MAX_DATA_QUEUE); 2815 if (ret < 0) { 2816 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2817 goto out; 2818 } 2819 2820 txq_id = ret; 2821 2822 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2823 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2824 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2825 ret = -ENXIO; 2826 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2827 tid, IWL_MAX_HW_QUEUES - 1); 2828 goto out; 2829 2830 } else if (unlikely(mvm->queue_info[txq_id].status == 2831 IWL_MVM_QUEUE_SHARED)) { 2832 ret = -ENXIO; 2833 IWL_DEBUG_TX_QUEUES(mvm, 2834 "Can't start tid %d agg on shared queue!\n", 2835 tid); 2836 goto out; 2837 } 2838 2839 IWL_DEBUG_TX_QUEUES(mvm, 2840 "AGG for tid %d will be on queue #%d\n", 2841 tid, txq_id); 2842 2843 tid_data = &mvmsta->tid_data[tid]; 2844 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2845 tid_data->txq_id = txq_id; 2846 *ssn = tid_data->ssn; 2847 2848 IWL_DEBUG_TX_QUEUES(mvm, 2849 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2850 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2851 tid_data->next_reclaimed); 2852 2853 /* 2854 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2855 * to align the wrap around of ssn so we compare relevant values. 2856 */ 2857 normalized_ssn = tid_data->ssn; 2858 if (mvm->trans->trans_cfg->gen2) 2859 normalized_ssn &= 0xff; 2860 2861 if (normalized_ssn == tid_data->next_reclaimed) { 2862 tid_data->state = IWL_AGG_STARTING; 2863 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 2864 } else { 2865 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2866 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 2867 } 2868 2869 out: 2870 spin_unlock_bh(&mvmsta->lock); 2871 2872 return ret; 2873 } 2874 2875 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2876 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2877 bool amsdu) 2878 { 2879 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2880 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2881 unsigned int wdg_timeout = 2882 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2883 int queue, ret; 2884 bool alloc_queue = true; 2885 enum iwl_mvm_queue_status queue_status; 2886 u16 ssn; 2887 2888 struct iwl_trans_txq_scd_cfg cfg = { 2889 .sta_id = mvmsta->sta_id, 2890 .tid = tid, 2891 .frame_limit = buf_size, 2892 .aggregate = true, 2893 }; 2894 2895 /* 2896 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2897 * manager, so this function should never be called in this case. 2898 */ 2899 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2900 return -EINVAL; 2901 2902 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2903 != IWL_MAX_TID_COUNT); 2904 2905 spin_lock_bh(&mvmsta->lock); 2906 ssn = tid_data->ssn; 2907 queue = tid_data->txq_id; 2908 tid_data->state = IWL_AGG_ON; 2909 mvmsta->agg_tids |= BIT(tid); 2910 tid_data->ssn = 0xffff; 2911 tid_data->amsdu_in_ampdu_allowed = amsdu; 2912 spin_unlock_bh(&mvmsta->lock); 2913 2914 if (iwl_mvm_has_new_tx_api(mvm)) { 2915 /* 2916 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2917 * would have failed, so if we are here there is no need to 2918 * allocate a queue. 2919 * However, if aggregation size is different than the default 2920 * size, the scheduler should be reconfigured. 2921 * We cannot do this with the new TX API, so return unsupported 2922 * for now, until it will be offloaded to firmware.. 2923 * Note that if SCD default value changes - this condition 2924 * should be updated as well. 2925 */ 2926 if (buf_size < IWL_FRAME_LIMIT) 2927 return -ENOTSUPP; 2928 2929 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2930 if (ret) 2931 return -EIO; 2932 goto out; 2933 } 2934 2935 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2936 2937 queue_status = mvm->queue_info[queue].status; 2938 2939 /* Maybe there is no need to even alloc a queue... */ 2940 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2941 alloc_queue = false; 2942 2943 /* 2944 * Only reconfig the SCD for the queue if the window size has 2945 * changed from current (become smaller) 2946 */ 2947 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2948 /* 2949 * If reconfiguring an existing queue, it first must be 2950 * drained 2951 */ 2952 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2953 BIT(queue)); 2954 if (ret) { 2955 IWL_ERR(mvm, 2956 "Error draining queue before reconfig\n"); 2957 return ret; 2958 } 2959 2960 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2961 mvmsta->sta_id, tid, 2962 buf_size, ssn); 2963 if (ret) { 2964 IWL_ERR(mvm, 2965 "Error reconfiguring TXQ #%d\n", queue); 2966 return ret; 2967 } 2968 } 2969 2970 if (alloc_queue) 2971 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 2972 &cfg, wdg_timeout); 2973 2974 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2975 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2976 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2977 if (ret) 2978 return -EIO; 2979 } 2980 2981 /* No need to mark as reserved */ 2982 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2983 2984 out: 2985 /* 2986 * Even though in theory the peer could have different 2987 * aggregation reorder buffer sizes for different sessions, 2988 * our ucode doesn't allow for that and has a global limit 2989 * for each station. Therefore, use the minimum of all the 2990 * aggregation sessions and our default value. 2991 */ 2992 mvmsta->max_agg_bufsize = 2993 min(mvmsta->max_agg_bufsize, buf_size); 2994 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2995 2996 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2997 sta->addr, tid); 2998 2999 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3000 } 3001 3002 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3003 struct iwl_mvm_sta *mvmsta, 3004 struct iwl_mvm_tid_data *tid_data) 3005 { 3006 u16 txq_id = tid_data->txq_id; 3007 3008 lockdep_assert_held(&mvm->mutex); 3009 3010 if (iwl_mvm_has_new_tx_api(mvm)) 3011 return; 3012 3013 /* 3014 * The TXQ is marked as reserved only if no traffic came through yet 3015 * This means no traffic has been sent on this TID (agg'd or not), so 3016 * we no longer have use for the queue. Since it hasn't even been 3017 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3018 * free. 3019 */ 3020 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3021 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3022 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3023 } 3024 } 3025 3026 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3027 struct ieee80211_sta *sta, u16 tid) 3028 { 3029 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3030 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3031 u16 txq_id; 3032 int err; 3033 3034 /* 3035 * If mac80211 is cleaning its state, then say that we finished since 3036 * our state has been cleared anyway. 3037 */ 3038 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3039 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3040 return 0; 3041 } 3042 3043 spin_lock_bh(&mvmsta->lock); 3044 3045 txq_id = tid_data->txq_id; 3046 3047 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3048 mvmsta->sta_id, tid, txq_id, tid_data->state); 3049 3050 mvmsta->agg_tids &= ~BIT(tid); 3051 3052 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3053 3054 switch (tid_data->state) { 3055 case IWL_AGG_ON: 3056 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3057 3058 IWL_DEBUG_TX_QUEUES(mvm, 3059 "ssn = %d, next_recl = %d\n", 3060 tid_data->ssn, tid_data->next_reclaimed); 3061 3062 tid_data->ssn = 0xffff; 3063 tid_data->state = IWL_AGG_OFF; 3064 spin_unlock_bh(&mvmsta->lock); 3065 3066 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3067 3068 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3069 return 0; 3070 case IWL_AGG_STARTING: 3071 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3072 /* 3073 * The agg session has been stopped before it was set up. This 3074 * can happen when the AddBA timer times out for example. 3075 */ 3076 3077 /* No barriers since we are under mutex */ 3078 lockdep_assert_held(&mvm->mutex); 3079 3080 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3081 tid_data->state = IWL_AGG_OFF; 3082 err = 0; 3083 break; 3084 default: 3085 IWL_ERR(mvm, 3086 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3087 mvmsta->sta_id, tid, tid_data->state); 3088 IWL_ERR(mvm, 3089 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3090 err = -EINVAL; 3091 } 3092 3093 spin_unlock_bh(&mvmsta->lock); 3094 3095 return err; 3096 } 3097 3098 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3099 struct ieee80211_sta *sta, u16 tid) 3100 { 3101 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3102 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3103 u16 txq_id; 3104 enum iwl_mvm_agg_state old_state; 3105 3106 /* 3107 * First set the agg state to OFF to avoid calling 3108 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3109 */ 3110 spin_lock_bh(&mvmsta->lock); 3111 txq_id = tid_data->txq_id; 3112 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3113 mvmsta->sta_id, tid, txq_id, tid_data->state); 3114 old_state = tid_data->state; 3115 tid_data->state = IWL_AGG_OFF; 3116 mvmsta->agg_tids &= ~BIT(tid); 3117 spin_unlock_bh(&mvmsta->lock); 3118 3119 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3120 3121 if (old_state >= IWL_AGG_ON) { 3122 iwl_mvm_drain_sta(mvm, mvmsta, true); 3123 3124 if (iwl_mvm_has_new_tx_api(mvm)) { 3125 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3126 BIT(tid))) 3127 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3128 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3129 } else { 3130 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3131 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3132 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3133 } 3134 3135 iwl_mvm_drain_sta(mvm, mvmsta, false); 3136 3137 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3138 } 3139 3140 return 0; 3141 } 3142 3143 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3144 { 3145 int i, max = -1, max_offs = -1; 3146 3147 lockdep_assert_held(&mvm->mutex); 3148 3149 /* Pick the unused key offset with the highest 'deleted' 3150 * counter. Every time a key is deleted, all the counters 3151 * are incremented and the one that was just deleted is 3152 * reset to zero. Thus, the highest counter is the one 3153 * that was deleted longest ago. Pick that one. 3154 */ 3155 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3156 if (test_bit(i, mvm->fw_key_table)) 3157 continue; 3158 if (mvm->fw_key_deleted[i] > max) { 3159 max = mvm->fw_key_deleted[i]; 3160 max_offs = i; 3161 } 3162 } 3163 3164 if (max_offs < 0) 3165 return STA_KEY_IDX_INVALID; 3166 3167 return max_offs; 3168 } 3169 3170 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3171 struct ieee80211_vif *vif, 3172 struct ieee80211_sta *sta) 3173 { 3174 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3175 3176 if (sta) 3177 return iwl_mvm_sta_from_mac80211(sta); 3178 3179 /* 3180 * The device expects GTKs for station interfaces to be 3181 * installed as GTKs for the AP station. If we have no 3182 * station ID, then use AP's station ID. 3183 */ 3184 if (vif->type == NL80211_IFTYPE_STATION && 3185 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3186 u8 sta_id = mvmvif->ap_sta_id; 3187 3188 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3189 lockdep_is_held(&mvm->mutex)); 3190 3191 /* 3192 * It is possible that the 'sta' parameter is NULL, 3193 * for example when a GTK is removed - the sta_id will then 3194 * be the AP ID, and no station was passed by mac80211. 3195 */ 3196 if (IS_ERR_OR_NULL(sta)) 3197 return NULL; 3198 3199 return iwl_mvm_sta_from_mac80211(sta); 3200 } 3201 3202 return NULL; 3203 } 3204 3205 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3206 { 3207 int i; 3208 3209 for (i = len - 1; i >= 0; i--) { 3210 if (pn1[i] > pn2[i]) 3211 return 1; 3212 if (pn1[i] < pn2[i]) 3213 return -1; 3214 } 3215 3216 return 0; 3217 } 3218 3219 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3220 u32 sta_id, 3221 struct ieee80211_key_conf *key, bool mcast, 3222 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3223 u8 key_offset, bool mfp) 3224 { 3225 union { 3226 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3227 struct iwl_mvm_add_sta_key_cmd cmd; 3228 } u = {}; 3229 __le16 key_flags; 3230 int ret; 3231 u32 status; 3232 u16 keyidx; 3233 u64 pn = 0; 3234 int i, size; 3235 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3236 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3237 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3238 ADD_STA_KEY, 3239 new_api ? 2 : 1); 3240 3241 if (sta_id == IWL_MVM_INVALID_STA) 3242 return -EINVAL; 3243 3244 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3245 STA_KEY_FLG_KEYID_MSK; 3246 key_flags = cpu_to_le16(keyidx); 3247 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3248 3249 switch (key->cipher) { 3250 case WLAN_CIPHER_SUITE_TKIP: 3251 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3252 if (api_ver >= 2) { 3253 memcpy((void *)&u.cmd.tx_mic_key, 3254 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3255 IWL_MIC_KEY_SIZE); 3256 3257 memcpy((void *)&u.cmd.rx_mic_key, 3258 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3259 IWL_MIC_KEY_SIZE); 3260 pn = atomic64_read(&key->tx_pn); 3261 3262 } else { 3263 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3264 for (i = 0; i < 5; i++) 3265 u.cmd_v1.tkip_rx_ttak[i] = 3266 cpu_to_le16(tkip_p1k[i]); 3267 } 3268 memcpy(u.cmd.common.key, key->key, key->keylen); 3269 break; 3270 case WLAN_CIPHER_SUITE_CCMP: 3271 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3272 memcpy(u.cmd.common.key, key->key, key->keylen); 3273 if (api_ver >= 2) 3274 pn = atomic64_read(&key->tx_pn); 3275 break; 3276 case WLAN_CIPHER_SUITE_WEP104: 3277 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3278 fallthrough; 3279 case WLAN_CIPHER_SUITE_WEP40: 3280 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3281 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3282 break; 3283 case WLAN_CIPHER_SUITE_GCMP_256: 3284 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3285 fallthrough; 3286 case WLAN_CIPHER_SUITE_GCMP: 3287 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3288 memcpy(u.cmd.common.key, key->key, key->keylen); 3289 if (api_ver >= 2) 3290 pn = atomic64_read(&key->tx_pn); 3291 break; 3292 default: 3293 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3294 memcpy(u.cmd.common.key, key->key, key->keylen); 3295 } 3296 3297 if (mcast) 3298 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3299 if (mfp) 3300 key_flags |= cpu_to_le16(STA_KEY_MFP); 3301 3302 u.cmd.common.key_offset = key_offset; 3303 u.cmd.common.key_flags = key_flags; 3304 u.cmd.common.sta_id = sta_id; 3305 3306 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3307 i = 0; 3308 else 3309 i = -1; 3310 3311 for (; i < IEEE80211_NUM_TIDS; i++) { 3312 struct ieee80211_key_seq seq = {}; 3313 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3314 int rx_pn_len = 8; 3315 /* there's a hole at 2/3 in FW format depending on version */ 3316 int hole = api_ver >= 3 ? 0 : 2; 3317 3318 ieee80211_get_key_rx_seq(key, i, &seq); 3319 3320 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3321 rx_pn[0] = seq.tkip.iv16; 3322 rx_pn[1] = seq.tkip.iv16 >> 8; 3323 rx_pn[2 + hole] = seq.tkip.iv32; 3324 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3325 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3326 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3327 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3328 rx_pn = seq.hw.seq; 3329 rx_pn_len = seq.hw.seq_len; 3330 } else { 3331 rx_pn[0] = seq.ccmp.pn[0]; 3332 rx_pn[1] = seq.ccmp.pn[1]; 3333 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3334 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3335 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3336 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3337 } 3338 3339 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3340 rx_pn_len) > 0) 3341 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3342 rx_pn_len); 3343 } 3344 3345 if (api_ver >= 2) { 3346 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3347 size = sizeof(u.cmd); 3348 } else { 3349 size = sizeof(u.cmd_v1); 3350 } 3351 3352 status = ADD_STA_SUCCESS; 3353 if (cmd_flags & CMD_ASYNC) 3354 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3355 &u.cmd); 3356 else 3357 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3358 &u.cmd, &status); 3359 3360 switch (status) { 3361 case ADD_STA_SUCCESS: 3362 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3363 break; 3364 default: 3365 ret = -EIO; 3366 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3367 break; 3368 } 3369 3370 return ret; 3371 } 3372 3373 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3374 struct ieee80211_key_conf *keyconf, 3375 u8 sta_id, bool remove_key) 3376 { 3377 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3378 3379 /* verify the key details match the required command's expectations */ 3380 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3381 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3382 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3383 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3384 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3385 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3386 return -EINVAL; 3387 3388 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3389 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3390 return -EINVAL; 3391 3392 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3393 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3394 3395 if (remove_key) { 3396 /* This is a valid situation for IGTK */ 3397 if (sta_id == IWL_MVM_INVALID_STA) 3398 return 0; 3399 3400 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3401 } else { 3402 struct ieee80211_key_seq seq; 3403 const u8 *pn; 3404 3405 switch (keyconf->cipher) { 3406 case WLAN_CIPHER_SUITE_AES_CMAC: 3407 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3408 break; 3409 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3410 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3411 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3412 break; 3413 default: 3414 return -EINVAL; 3415 } 3416 3417 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3418 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3419 igtk_cmd.ctrl_flags |= 3420 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3421 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3422 pn = seq.aes_cmac.pn; 3423 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3424 ((u64) pn[4] << 8) | 3425 ((u64) pn[3] << 16) | 3426 ((u64) pn[2] << 24) | 3427 ((u64) pn[1] << 32) | 3428 ((u64) pn[0] << 40)); 3429 } 3430 3431 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3432 remove_key ? "removing" : "installing", 3433 keyconf->keyidx >= 6 ? "B" : "", 3434 keyconf->keyidx, igtk_cmd.sta_id); 3435 3436 if (!iwl_mvm_has_new_rx_api(mvm)) { 3437 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3438 .ctrl_flags = igtk_cmd.ctrl_flags, 3439 .key_id = igtk_cmd.key_id, 3440 .sta_id = igtk_cmd.sta_id, 3441 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3442 }; 3443 3444 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3445 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3446 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3447 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3448 } 3449 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3450 sizeof(igtk_cmd), &igtk_cmd); 3451 } 3452 3453 3454 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3455 struct ieee80211_vif *vif, 3456 struct ieee80211_sta *sta) 3457 { 3458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3459 3460 if (sta) 3461 return sta->addr; 3462 3463 if (vif->type == NL80211_IFTYPE_STATION && 3464 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3465 u8 sta_id = mvmvif->ap_sta_id; 3466 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3467 lockdep_is_held(&mvm->mutex)); 3468 return sta->addr; 3469 } 3470 3471 3472 return NULL; 3473 } 3474 3475 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3476 struct ieee80211_vif *vif, 3477 struct ieee80211_sta *sta, 3478 struct ieee80211_key_conf *keyconf, 3479 u8 key_offset, 3480 bool mcast) 3481 { 3482 const u8 *addr; 3483 struct ieee80211_key_seq seq; 3484 u16 p1k[5]; 3485 u32 sta_id; 3486 bool mfp = false; 3487 3488 if (sta) { 3489 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3490 3491 sta_id = mvm_sta->sta_id; 3492 mfp = sta->mfp; 3493 } else if (vif->type == NL80211_IFTYPE_AP && 3494 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3495 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3496 3497 sta_id = mvmvif->mcast_sta.sta_id; 3498 } else { 3499 IWL_ERR(mvm, "Failed to find station id\n"); 3500 return -EINVAL; 3501 } 3502 3503 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3504 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3505 /* get phase 1 key from mac80211 */ 3506 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3507 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3508 3509 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3510 seq.tkip.iv32, p1k, 0, key_offset, 3511 mfp); 3512 } 3513 3514 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3515 0, NULL, 0, key_offset, mfp); 3516 } 3517 3518 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3519 struct ieee80211_vif *vif, 3520 struct ieee80211_sta *sta, 3521 struct ieee80211_key_conf *keyconf, 3522 u8 key_offset) 3523 { 3524 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3525 struct iwl_mvm_sta *mvm_sta; 3526 u8 sta_id = IWL_MVM_INVALID_STA; 3527 int ret; 3528 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3529 3530 lockdep_assert_held(&mvm->mutex); 3531 3532 if (vif->type != NL80211_IFTYPE_AP || 3533 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3534 /* Get the station id from the mvm local station table */ 3535 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3536 if (!mvm_sta) { 3537 IWL_ERR(mvm, "Failed to find station\n"); 3538 return -EINVAL; 3539 } 3540 sta_id = mvm_sta->sta_id; 3541 3542 /* 3543 * It is possible that the 'sta' parameter is NULL, and thus 3544 * there is a need to retrieve the sta from the local station 3545 * table. 3546 */ 3547 if (!sta) { 3548 sta = rcu_dereference_protected( 3549 mvm->fw_id_to_mac_id[sta_id], 3550 lockdep_is_held(&mvm->mutex)); 3551 if (IS_ERR_OR_NULL(sta)) { 3552 IWL_ERR(mvm, "Invalid station id\n"); 3553 return -EINVAL; 3554 } 3555 } 3556 3557 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3558 return -EINVAL; 3559 } else { 3560 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3561 3562 sta_id = mvmvif->mcast_sta.sta_id; 3563 } 3564 3565 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3566 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3567 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3568 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3569 goto end; 3570 } 3571 3572 /* If the key_offset is not pre-assigned, we need to find a 3573 * new offset to use. In normal cases, the offset is not 3574 * pre-assigned, but during HW_RESTART we want to reuse the 3575 * same indices, so we pass them when this function is called. 3576 * 3577 * In D3 entry, we need to hardcoded the indices (because the 3578 * firmware hardcodes the PTK offset to 0). In this case, we 3579 * need to make sure we don't overwrite the hw_key_idx in the 3580 * keyconf structure, because otherwise we cannot configure 3581 * the original ones back when resuming. 3582 */ 3583 if (key_offset == STA_KEY_IDX_INVALID) { 3584 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3585 if (key_offset == STA_KEY_IDX_INVALID) 3586 return -ENOSPC; 3587 keyconf->hw_key_idx = key_offset; 3588 } 3589 3590 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3591 if (ret) 3592 goto end; 3593 3594 /* 3595 * For WEP, the same key is used for multicast and unicast. Upload it 3596 * again, using the same key offset, and now pointing the other one 3597 * to the same key slot (offset). 3598 * If this fails, remove the original as well. 3599 */ 3600 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3601 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3602 sta) { 3603 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3604 key_offset, !mcast); 3605 if (ret) { 3606 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3607 goto end; 3608 } 3609 } 3610 3611 __set_bit(key_offset, mvm->fw_key_table); 3612 3613 end: 3614 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3615 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3616 sta ? sta->addr : zero_addr, ret); 3617 return ret; 3618 } 3619 3620 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3621 struct ieee80211_vif *vif, 3622 struct ieee80211_sta *sta, 3623 struct ieee80211_key_conf *keyconf) 3624 { 3625 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3626 struct iwl_mvm_sta *mvm_sta; 3627 u8 sta_id = IWL_MVM_INVALID_STA; 3628 int ret, i; 3629 3630 lockdep_assert_held(&mvm->mutex); 3631 3632 /* Get the station from the mvm local station table */ 3633 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3634 if (mvm_sta) 3635 sta_id = mvm_sta->sta_id; 3636 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3637 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3638 3639 3640 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3641 keyconf->keyidx, sta_id); 3642 3643 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3644 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3645 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3646 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3647 3648 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3649 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3650 keyconf->hw_key_idx); 3651 return -ENOENT; 3652 } 3653 3654 /* track which key was deleted last */ 3655 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3656 if (mvm->fw_key_deleted[i] < U8_MAX) 3657 mvm->fw_key_deleted[i]++; 3658 } 3659 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3660 3661 if (sta && !mvm_sta) { 3662 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3663 return 0; 3664 } 3665 3666 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3667 if (ret) 3668 return ret; 3669 3670 /* delete WEP key twice to get rid of (now useless) offset */ 3671 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3672 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3673 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3674 3675 return ret; 3676 } 3677 3678 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3679 struct ieee80211_vif *vif, 3680 struct ieee80211_key_conf *keyconf, 3681 struct ieee80211_sta *sta, u32 iv32, 3682 u16 *phase1key) 3683 { 3684 struct iwl_mvm_sta *mvm_sta; 3685 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3686 bool mfp = sta ? sta->mfp : false; 3687 3688 rcu_read_lock(); 3689 3690 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3691 if (WARN_ON_ONCE(!mvm_sta)) 3692 goto unlock; 3693 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3694 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3695 mfp); 3696 3697 unlock: 3698 rcu_read_unlock(); 3699 } 3700 3701 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3702 struct ieee80211_sta *sta) 3703 { 3704 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3705 struct iwl_mvm_add_sta_cmd cmd = { 3706 .add_modify = STA_MODE_MODIFY, 3707 .sta_id = mvmsta->sta_id, 3708 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3709 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3710 }; 3711 int ret; 3712 3713 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3714 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3715 if (ret) 3716 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3717 } 3718 3719 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3720 struct ieee80211_sta *sta, 3721 enum ieee80211_frame_release_type reason, 3722 u16 cnt, u16 tids, bool more_data, 3723 bool single_sta_queue) 3724 { 3725 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3726 struct iwl_mvm_add_sta_cmd cmd = { 3727 .add_modify = STA_MODE_MODIFY, 3728 .sta_id = mvmsta->sta_id, 3729 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3730 .sleep_tx_count = cpu_to_le16(cnt), 3731 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3732 }; 3733 int tid, ret; 3734 unsigned long _tids = tids; 3735 3736 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3737 * Note that this field is reserved and unused by firmware not 3738 * supporting GO uAPSD, so it's safe to always do this. 3739 */ 3740 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3741 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3742 3743 /* If we're releasing frames from aggregation or dqa queues then check 3744 * if all the queues that we're releasing frames from, combined, have: 3745 * - more frames than the service period, in which case more_data 3746 * needs to be set 3747 * - fewer than 'cnt' frames, in which case we need to adjust the 3748 * firmware command (but do that unconditionally) 3749 */ 3750 if (single_sta_queue) { 3751 int remaining = cnt; 3752 int sleep_tx_count; 3753 3754 spin_lock_bh(&mvmsta->lock); 3755 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3756 struct iwl_mvm_tid_data *tid_data; 3757 u16 n_queued; 3758 3759 tid_data = &mvmsta->tid_data[tid]; 3760 3761 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3762 if (n_queued > remaining) { 3763 more_data = true; 3764 remaining = 0; 3765 break; 3766 } 3767 remaining -= n_queued; 3768 } 3769 sleep_tx_count = cnt - remaining; 3770 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3771 mvmsta->sleep_tx_count = sleep_tx_count; 3772 spin_unlock_bh(&mvmsta->lock); 3773 3774 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3775 if (WARN_ON(cnt - remaining == 0)) { 3776 ieee80211_sta_eosp(sta); 3777 return; 3778 } 3779 } 3780 3781 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3782 if (more_data) 3783 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3784 3785 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3786 mvmsta->next_status_eosp = true; 3787 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3788 } else { 3789 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3790 } 3791 3792 /* block the Tx queues until the FW updated the sleep Tx count */ 3793 iwl_trans_block_txq_ptrs(mvm->trans, true); 3794 3795 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3796 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3797 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3798 if (ret) 3799 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3800 } 3801 3802 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3803 struct iwl_rx_cmd_buffer *rxb) 3804 { 3805 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3806 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3807 struct ieee80211_sta *sta; 3808 u32 sta_id = le32_to_cpu(notif->sta_id); 3809 3810 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3811 return; 3812 3813 rcu_read_lock(); 3814 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3815 if (!IS_ERR_OR_NULL(sta)) 3816 ieee80211_sta_eosp(sta); 3817 rcu_read_unlock(); 3818 } 3819 3820 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3821 struct iwl_mvm_sta *mvmsta, bool disable) 3822 { 3823 struct iwl_mvm_add_sta_cmd cmd = { 3824 .add_modify = STA_MODE_MODIFY, 3825 .sta_id = mvmsta->sta_id, 3826 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3827 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3828 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3829 }; 3830 int ret; 3831 3832 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3833 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3834 if (ret) 3835 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3836 } 3837 3838 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3839 struct ieee80211_sta *sta, 3840 bool disable) 3841 { 3842 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3843 3844 spin_lock_bh(&mvm_sta->lock); 3845 3846 if (mvm_sta->disable_tx == disable) { 3847 spin_unlock_bh(&mvm_sta->lock); 3848 return; 3849 } 3850 3851 mvm_sta->disable_tx = disable; 3852 3853 /* 3854 * If sta PS state is handled by mac80211, tell it to start/stop 3855 * queuing tx for this station. 3856 */ 3857 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 3858 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3859 3860 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3861 3862 spin_unlock_bh(&mvm_sta->lock); 3863 } 3864 3865 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3866 struct iwl_mvm_vif *mvmvif, 3867 struct iwl_mvm_int_sta *sta, 3868 bool disable) 3869 { 3870 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3871 struct iwl_mvm_add_sta_cmd cmd = { 3872 .add_modify = STA_MODE_MODIFY, 3873 .sta_id = sta->sta_id, 3874 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3875 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3876 .mac_id_n_color = cpu_to_le32(id), 3877 }; 3878 int ret; 3879 3880 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3881 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3882 if (ret) 3883 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3884 } 3885 3886 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3887 struct iwl_mvm_vif *mvmvif, 3888 bool disable) 3889 { 3890 struct ieee80211_sta *sta; 3891 struct iwl_mvm_sta *mvm_sta; 3892 int i; 3893 3894 rcu_read_lock(); 3895 3896 /* Block/unblock all the stations of the given mvmvif */ 3897 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 3898 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 3899 if (IS_ERR_OR_NULL(sta)) 3900 continue; 3901 3902 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3903 if (mvm_sta->mac_id_n_color != 3904 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3905 continue; 3906 3907 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3908 } 3909 3910 rcu_read_unlock(); 3911 3912 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3913 return; 3914 3915 /* Need to block/unblock also multicast station */ 3916 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3917 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3918 &mvmvif->mcast_sta, disable); 3919 3920 /* 3921 * Only unblock the broadcast station (FW blocks it for immediate 3922 * quiet, not the driver) 3923 */ 3924 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3925 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3926 &mvmvif->bcast_sta, disable); 3927 } 3928 3929 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3930 { 3931 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3932 struct iwl_mvm_sta *mvmsta; 3933 3934 rcu_read_lock(); 3935 3936 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3937 3938 if (!WARN_ON(!mvmsta)) 3939 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3940 3941 rcu_read_unlock(); 3942 } 3943 3944 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3945 { 3946 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3947 3948 /* 3949 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3950 * to align the wrap around of ssn so we compare relevant values. 3951 */ 3952 if (mvm->trans->trans_cfg->gen2) 3953 sn &= 0xff; 3954 3955 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3956 } 3957 3958 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3959 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 3960 u8 *key, u32 key_len) 3961 { 3962 int ret; 3963 u16 queue; 3964 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3965 struct ieee80211_key_conf *keyconf; 3966 3967 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 3968 NL80211_IFTYPE_UNSPECIFIED, 3969 IWL_STA_LINK); 3970 if (ret) 3971 return ret; 3972 3973 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 3974 addr, sta, &queue, 3975 IWL_MVM_TX_FIFO_BE); 3976 if (ret) 3977 goto out; 3978 3979 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 3980 if (!keyconf) { 3981 ret = -ENOBUFS; 3982 goto out; 3983 } 3984 3985 keyconf->cipher = cipher; 3986 memcpy(keyconf->key, key, key_len); 3987 keyconf->keylen = key_len; 3988 3989 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 3990 0, NULL, 0, 0, true); 3991 kfree(keyconf); 3992 return 0; 3993 out: 3994 iwl_mvm_dealloc_int_sta(mvm, sta); 3995 return ret; 3996 } 3997