1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2021 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 #if defined(__FreeBSD__) 9 #include <linux/cache.h> 10 #endif 11 12 #include "mvm.h" 13 #include "sta.h" 14 #include "rs.h" 15 16 /* 17 * New version of ADD_STA_sta command added new fields at the end of the 18 * structure, so sending the size of the relevant API's structure is enough to 19 * support both API versions. 20 */ 21 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 22 { 23 if (iwl_mvm_has_new_rx_api(mvm) || 24 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 25 return sizeof(struct iwl_mvm_add_sta_cmd); 26 else 27 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 28 } 29 30 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 31 enum nl80211_iftype iftype) 32 { 33 int sta_id; 34 u32 reserved_ids = 0; 35 36 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 37 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 38 39 lockdep_assert_held(&mvm->mutex); 40 41 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 42 if (iftype != NL80211_IFTYPE_STATION) 43 reserved_ids = BIT(0); 44 45 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 46 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 47 if (BIT(sta_id) & reserved_ids) 48 continue; 49 50 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 51 lockdep_is_held(&mvm->mutex))) 52 return sta_id; 53 } 54 return IWL_MVM_INVALID_STA; 55 } 56 57 /* send station add/update command to firmware */ 58 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 59 bool update, unsigned int flags) 60 { 61 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 62 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 63 .sta_id = mvm_sta->sta_id, 64 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 65 .add_modify = update ? 1 : 0, 66 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 67 STA_FLG_MIMO_EN_MSK | 68 STA_FLG_RTS_MIMO_PROT), 69 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 70 }; 71 int ret; 72 u32 status; 73 u32 agg_size = 0, mpdu_dens = 0; 74 75 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 76 add_sta_cmd.station_type = mvm_sta->sta_type; 77 78 if (!update || (flags & STA_MODIFY_QUEUES)) { 79 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 80 81 if (!iwl_mvm_has_new_tx_api(mvm)) { 82 add_sta_cmd.tfd_queue_msk = 83 cpu_to_le32(mvm_sta->tfd_queue_msk); 84 85 if (flags & STA_MODIFY_QUEUES) 86 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 87 } else { 88 WARN_ON(flags & STA_MODIFY_QUEUES); 89 } 90 } 91 92 switch (sta->bandwidth) { 93 case IEEE80211_STA_RX_BW_160: 94 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 95 fallthrough; 96 case IEEE80211_STA_RX_BW_80: 97 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 98 fallthrough; 99 case IEEE80211_STA_RX_BW_40: 100 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 101 fallthrough; 102 case IEEE80211_STA_RX_BW_20: 103 if (sta->ht_cap.ht_supported) 104 add_sta_cmd.station_flags |= 105 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 106 break; 107 } 108 109 switch (sta->rx_nss) { 110 case 1: 111 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 112 break; 113 case 2: 114 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 115 break; 116 case 3 ... 8: 117 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 118 break; 119 } 120 121 switch (sta->smps_mode) { 122 case IEEE80211_SMPS_AUTOMATIC: 123 case IEEE80211_SMPS_NUM_MODES: 124 WARN_ON(1); 125 break; 126 case IEEE80211_SMPS_STATIC: 127 /* override NSS */ 128 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 129 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 130 break; 131 case IEEE80211_SMPS_DYNAMIC: 132 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 133 break; 134 case IEEE80211_SMPS_OFF: 135 /* nothing */ 136 break; 137 } 138 139 if (sta->ht_cap.ht_supported) { 140 add_sta_cmd.station_flags_msk |= 141 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 142 STA_FLG_AGG_MPDU_DENS_MSK); 143 144 mpdu_dens = sta->ht_cap.ampdu_density; 145 } 146 147 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 148 add_sta_cmd.station_flags_msk |= 149 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 150 STA_FLG_AGG_MPDU_DENS_MSK); 151 152 mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 154 agg_size = le16_get_bits(sta->he_6ghz_capa.capa, 155 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 156 } else 157 if (sta->vht_cap.vht_supported) { 158 agg_size = sta->vht_cap.cap & 159 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 160 agg_size >>= 161 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 162 } else if (sta->ht_cap.ht_supported) { 163 agg_size = sta->ht_cap.ampdu_factor; 164 } 165 166 /* D6.0 10.12.2 A-MPDU length limit rules 167 * A STA indicates the maximum length of the A-MPDU preEOF padding 168 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 169 * Exponent field in its HT Capabilities, VHT Capabilities, 170 * and HE 6 GHz Band Capabilities elements (if present) and the 171 * Maximum AMPDU Length Exponent Extension field in its HE 172 * Capabilities element 173 */ 174 if (sta->he_cap.has_he) 175 agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], 176 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 177 178 /* Limit to max A-MPDU supported by FW */ 179 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 180 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 181 STA_FLG_MAX_AGG_SIZE_SHIFT); 182 183 add_sta_cmd.station_flags |= 184 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 185 add_sta_cmd.station_flags |= 186 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 187 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 188 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 189 190 if (sta->wme) { 191 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 192 193 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 194 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 195 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 196 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 197 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 198 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 199 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 200 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 201 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 202 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 203 } 204 205 status = ADD_STA_SUCCESS; 206 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 207 iwl_mvm_add_sta_cmd_size(mvm), 208 &add_sta_cmd, &status); 209 if (ret) 210 return ret; 211 212 switch (status & IWL_ADD_STA_STATUS_MASK) { 213 case ADD_STA_SUCCESS: 214 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 215 break; 216 default: 217 ret = -EIO; 218 IWL_ERR(mvm, "ADD_STA failed\n"); 219 break; 220 } 221 222 return ret; 223 } 224 225 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 226 { 227 struct iwl_mvm_baid_data *data = 228 from_timer(data, t, session_timer); 229 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 230 struct iwl_mvm_baid_data *ba_data; 231 struct ieee80211_sta *sta; 232 struct iwl_mvm_sta *mvm_sta; 233 unsigned long timeout; 234 235 rcu_read_lock(); 236 237 ba_data = rcu_dereference(*rcu_ptr); 238 239 if (WARN_ON(!ba_data)) 240 goto unlock; 241 242 if (!ba_data->timeout) 243 goto unlock; 244 245 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 246 if (time_is_after_jiffies(timeout)) { 247 mod_timer(&ba_data->session_timer, timeout); 248 goto unlock; 249 } 250 251 /* Timer expired */ 252 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 253 254 /* 255 * sta should be valid unless the following happens: 256 * The firmware asserts which triggers a reconfig flow, but 257 * the reconfig fails before we set the pointer to sta into 258 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 259 * A-MDPU and hence the timer continues to run. Then, the 260 * timer expires and sta is NULL. 261 */ 262 if (!sta) 263 goto unlock; 264 265 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 266 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 267 sta->addr, ba_data->tid); 268 unlock: 269 rcu_read_unlock(); 270 } 271 272 /* Disable aggregations for a bitmap of TIDs for a given station */ 273 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 274 unsigned long disable_agg_tids, 275 bool remove_queue) 276 { 277 struct iwl_mvm_add_sta_cmd cmd = {}; 278 struct ieee80211_sta *sta; 279 struct iwl_mvm_sta *mvmsta; 280 u32 status; 281 u8 sta_id; 282 283 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 284 return -EINVAL; 285 286 sta_id = mvm->queue_info[queue].ra_sta_id; 287 288 rcu_read_lock(); 289 290 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 291 292 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 293 rcu_read_unlock(); 294 return -EINVAL; 295 } 296 297 mvmsta = iwl_mvm_sta_from_mac80211(sta); 298 299 mvmsta->tid_disable_agg |= disable_agg_tids; 300 301 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 302 cmd.sta_id = mvmsta->sta_id; 303 cmd.add_modify = STA_MODE_MODIFY; 304 cmd.modify_mask = STA_MODIFY_QUEUES; 305 if (disable_agg_tids) 306 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 307 if (remove_queue) 308 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 309 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 310 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 311 312 rcu_read_unlock(); 313 314 /* Notify FW of queue removal from the STA queues */ 315 status = ADD_STA_SUCCESS; 316 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 317 iwl_mvm_add_sta_cmd_size(mvm), 318 &cmd, &status); 319 } 320 321 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 322 u16 *queueptr, u8 tid, u8 flags) 323 { 324 int queue = *queueptr; 325 struct iwl_scd_txq_cfg_cmd cmd = { 326 .scd_queue = queue, 327 .action = SCD_CFG_DISABLE_QUEUE, 328 }; 329 int ret; 330 331 if (iwl_mvm_has_new_tx_api(mvm)) { 332 iwl_trans_txq_free(mvm->trans, queue); 333 *queueptr = IWL_MVM_INVALID_QUEUE; 334 335 return 0; 336 } 337 338 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 339 return 0; 340 341 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 342 343 cmd.action = mvm->queue_info[queue].tid_bitmap ? 344 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 345 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 346 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 347 348 IWL_DEBUG_TX_QUEUES(mvm, 349 "Disabling TXQ #%d tids=0x%x\n", 350 queue, 351 mvm->queue_info[queue].tid_bitmap); 352 353 /* If the queue is still enabled - nothing left to do in this func */ 354 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 355 return 0; 356 357 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 358 cmd.tid = mvm->queue_info[queue].txq_tid; 359 360 /* Make sure queue info is correct even though we overwrite it */ 361 WARN(mvm->queue_info[queue].tid_bitmap, 362 "TXQ #%d info out-of-sync - tids=0x%x\n", 363 queue, mvm->queue_info[queue].tid_bitmap); 364 365 /* If we are here - the queue is freed and we can zero out these vals */ 366 mvm->queue_info[queue].tid_bitmap = 0; 367 368 if (sta) { 369 struct iwl_mvm_txq *mvmtxq = 370 iwl_mvm_txq_from_tid(sta, tid); 371 372 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 373 } 374 375 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 376 mvm->queue_info[queue].reserved = false; 377 378 iwl_trans_txq_disable(mvm->trans, queue, false); 379 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 380 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 381 382 if (ret) 383 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 384 queue, ret); 385 return ret; 386 } 387 388 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 389 { 390 struct ieee80211_sta *sta; 391 struct iwl_mvm_sta *mvmsta; 392 unsigned long tid_bitmap; 393 unsigned long agg_tids = 0; 394 u8 sta_id; 395 int tid; 396 397 lockdep_assert_held(&mvm->mutex); 398 399 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 400 return -EINVAL; 401 402 sta_id = mvm->queue_info[queue].ra_sta_id; 403 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 404 405 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 406 lockdep_is_held(&mvm->mutex)); 407 408 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 409 return -EINVAL; 410 411 mvmsta = iwl_mvm_sta_from_mac80211(sta); 412 413 spin_lock_bh(&mvmsta->lock); 414 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 415 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 416 agg_tids |= BIT(tid); 417 } 418 spin_unlock_bh(&mvmsta->lock); 419 420 return agg_tids; 421 } 422 423 /* 424 * Remove a queue from a station's resources. 425 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 426 * doesn't disable the queue 427 */ 428 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 429 { 430 struct ieee80211_sta *sta; 431 struct iwl_mvm_sta *mvmsta; 432 unsigned long tid_bitmap; 433 unsigned long disable_agg_tids = 0; 434 u8 sta_id; 435 int tid; 436 437 lockdep_assert_held(&mvm->mutex); 438 439 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 440 return -EINVAL; 441 442 sta_id = mvm->queue_info[queue].ra_sta_id; 443 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 444 445 rcu_read_lock(); 446 447 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 448 449 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 450 rcu_read_unlock(); 451 return 0; 452 } 453 454 mvmsta = iwl_mvm_sta_from_mac80211(sta); 455 456 spin_lock_bh(&mvmsta->lock); 457 /* Unmap MAC queues and TIDs from this queue */ 458 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 459 struct iwl_mvm_txq *mvmtxq = 460 iwl_mvm_txq_from_tid(sta, tid); 461 462 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 463 disable_agg_tids |= BIT(tid); 464 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 465 466 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 467 } 468 469 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 470 spin_unlock_bh(&mvmsta->lock); 471 472 rcu_read_unlock(); 473 474 /* 475 * The TX path may have been using this TXQ_ID from the tid_data, 476 * so make sure it's no longer running so that we can safely reuse 477 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 478 * above, but nothing guarantees we've stopped using them. Thus, 479 * without this, we could get to iwl_mvm_disable_txq() and remove 480 * the queue while still sending frames to it. 481 */ 482 synchronize_net(); 483 484 return disable_agg_tids; 485 } 486 487 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 488 struct ieee80211_sta *old_sta, 489 u8 new_sta_id) 490 { 491 struct iwl_mvm_sta *mvmsta; 492 u8 sta_id, tid; 493 unsigned long disable_agg_tids = 0; 494 bool same_sta; 495 u16 queue_tmp = queue; 496 int ret; 497 498 lockdep_assert_held(&mvm->mutex); 499 500 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 501 return -EINVAL; 502 503 sta_id = mvm->queue_info[queue].ra_sta_id; 504 tid = mvm->queue_info[queue].txq_tid; 505 506 same_sta = sta_id == new_sta_id; 507 508 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 509 if (WARN_ON(!mvmsta)) 510 return -EINVAL; 511 512 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 513 /* Disable the queue */ 514 if (disable_agg_tids) 515 iwl_mvm_invalidate_sta_queue(mvm, queue, 516 disable_agg_tids, false); 517 518 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid, 0); 519 if (ret) { 520 IWL_ERR(mvm, 521 "Failed to free inactive queue %d (ret=%d)\n", 522 queue, ret); 523 524 return ret; 525 } 526 527 /* If TXQ is allocated to another STA, update removal in FW */ 528 if (!same_sta) 529 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 530 531 return 0; 532 } 533 534 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 535 unsigned long tfd_queue_mask, u8 ac) 536 { 537 int queue = 0; 538 u8 ac_to_queue[IEEE80211_NUM_ACS]; 539 int i; 540 541 /* 542 * This protects us against grabbing a queue that's being reconfigured 543 * by the inactivity checker. 544 */ 545 lockdep_assert_held(&mvm->mutex); 546 547 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 548 return -EINVAL; 549 550 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 551 552 /* See what ACs the existing queues for this STA have */ 553 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 554 /* Only DATA queues can be shared */ 555 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 556 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 557 continue; 558 559 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 560 } 561 562 /* 563 * The queue to share is chosen only from DATA queues as follows (in 564 * descending priority): 565 * 1. An AC_BE queue 566 * 2. Same AC queue 567 * 3. Highest AC queue that is lower than new AC 568 * 4. Any existing AC (there always is at least 1 DATA queue) 569 */ 570 571 /* Priority 1: An AC_BE queue */ 572 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 573 queue = ac_to_queue[IEEE80211_AC_BE]; 574 /* Priority 2: Same AC queue */ 575 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 576 queue = ac_to_queue[ac]; 577 /* Priority 3a: If new AC is VO and VI exists - use VI */ 578 else if (ac == IEEE80211_AC_VO && 579 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 580 queue = ac_to_queue[IEEE80211_AC_VI]; 581 /* Priority 3b: No BE so only AC less than the new one is BK */ 582 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 583 queue = ac_to_queue[IEEE80211_AC_BK]; 584 /* Priority 4a: No BE nor BK - use VI if exists */ 585 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 586 queue = ac_to_queue[IEEE80211_AC_VI]; 587 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 588 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 589 queue = ac_to_queue[IEEE80211_AC_VO]; 590 591 /* Make sure queue found (or not) is legal */ 592 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 593 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 594 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 595 IWL_ERR(mvm, "No DATA queues available to share\n"); 596 return -ENOSPC; 597 } 598 599 return queue; 600 } 601 602 /* 603 * If a given queue has a higher AC than the TID stream that is being compared 604 * to, the queue needs to be redirected to the lower AC. This function does that 605 * in such a case, otherwise - if no redirection required - it does nothing, 606 * unless the %force param is true. 607 */ 608 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 609 int ac, int ssn, unsigned int wdg_timeout, 610 bool force, struct iwl_mvm_txq *txq) 611 { 612 struct iwl_scd_txq_cfg_cmd cmd = { 613 .scd_queue = queue, 614 .action = SCD_CFG_DISABLE_QUEUE, 615 }; 616 bool shared_queue; 617 int ret; 618 619 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 620 return -EINVAL; 621 622 /* 623 * If the AC is lower than current one - FIFO needs to be redirected to 624 * the lowest one of the streams in the queue. Check if this is needed 625 * here. 626 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 627 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 628 * we need to check if the numerical value of X is LARGER than of Y. 629 */ 630 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 631 IWL_DEBUG_TX_QUEUES(mvm, 632 "No redirection needed on TXQ #%d\n", 633 queue); 634 return 0; 635 } 636 637 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 638 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 639 cmd.tid = mvm->queue_info[queue].txq_tid; 640 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 641 642 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 643 queue, iwl_mvm_ac_to_tx_fifo[ac]); 644 645 /* Stop the queue and wait for it to empty */ 646 txq->stopped = true; 647 648 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 649 if (ret) { 650 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 651 queue); 652 ret = -EIO; 653 goto out; 654 } 655 656 /* Before redirecting the queue we need to de-activate it */ 657 iwl_trans_txq_disable(mvm->trans, queue, false); 658 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 659 if (ret) 660 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 661 ret); 662 663 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 664 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 665 666 /* Update the TID "owner" of the queue */ 667 mvm->queue_info[queue].txq_tid = tid; 668 669 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 670 671 /* Redirect to lower AC */ 672 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 673 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 674 675 /* Update AC marking of the queue */ 676 mvm->queue_info[queue].mac80211_ac = ac; 677 678 /* 679 * Mark queue as shared in transport if shared 680 * Note this has to be done after queue enablement because enablement 681 * can also set this value, and there is no indication there to shared 682 * queues 683 */ 684 if (shared_queue) 685 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 686 687 out: 688 /* Continue using the queue */ 689 txq->stopped = false; 690 691 return ret; 692 } 693 694 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 695 u8 minq, u8 maxq) 696 { 697 int i; 698 699 lockdep_assert_held(&mvm->mutex); 700 701 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 702 "max queue %d >= num_of_queues (%d)", maxq, 703 mvm->trans->trans_cfg->base_params->num_of_queues)) 704 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 705 706 /* This should not be hit with new TX path */ 707 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 708 return -ENOSPC; 709 710 /* Start by looking for a free queue */ 711 for (i = minq; i <= maxq; i++) 712 if (mvm->queue_info[i].tid_bitmap == 0 && 713 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 714 return i; 715 716 return -ENOSPC; 717 } 718 719 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 720 u8 sta_id, u8 tid, unsigned int timeout) 721 { 722 int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, 723 mvm->trans->cfg->min_256_ba_txq_size); 724 725 if (tid == IWL_MAX_TID_COUNT) { 726 tid = IWL_MGMT_TID; 727 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 728 mvm->trans->cfg->min_txq_size); 729 } 730 731 do { 732 __le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); 733 734 queue = iwl_trans_txq_alloc(mvm->trans, enable, 735 sta_id, tid, SCD_QUEUE_CFG, 736 size, timeout); 737 738 if (queue < 0) 739 IWL_DEBUG_TX_QUEUES(mvm, 740 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 741 size, sta_id, tid, queue); 742 size /= 2; 743 } while (queue < 0 && size >= 16); 744 745 if (queue < 0) 746 return queue; 747 748 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 749 queue, sta_id, tid); 750 751 return queue; 752 } 753 754 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 755 struct ieee80211_sta *sta, u8 ac, 756 int tid) 757 { 758 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 759 struct iwl_mvm_txq *mvmtxq = 760 iwl_mvm_txq_from_tid(sta, tid); 761 unsigned int wdg_timeout = 762 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 763 int queue = -1; 764 765 lockdep_assert_held(&mvm->mutex); 766 767 IWL_DEBUG_TX_QUEUES(mvm, 768 "Allocating queue for sta %d on tid %d\n", 769 mvmsta->sta_id, tid); 770 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 771 if (queue < 0) 772 return queue; 773 774 mvmtxq->txq_id = queue; 775 mvm->tvqm_info[queue].txq_tid = tid; 776 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 777 778 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 779 780 spin_lock_bh(&mvmsta->lock); 781 mvmsta->tid_data[tid].txq_id = queue; 782 spin_unlock_bh(&mvmsta->lock); 783 784 return 0; 785 } 786 787 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 788 struct ieee80211_sta *sta, 789 int queue, u8 sta_id, u8 tid) 790 { 791 bool enable_queue = true; 792 793 /* Make sure this TID isn't already enabled */ 794 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 795 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 796 queue, tid); 797 return false; 798 } 799 800 /* Update mappings and refcounts */ 801 if (mvm->queue_info[queue].tid_bitmap) 802 enable_queue = false; 803 804 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 805 mvm->queue_info[queue].ra_sta_id = sta_id; 806 807 if (enable_queue) { 808 if (tid != IWL_MAX_TID_COUNT) 809 mvm->queue_info[queue].mac80211_ac = 810 tid_to_mac80211_ac[tid]; 811 else 812 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 813 814 mvm->queue_info[queue].txq_tid = tid; 815 } 816 817 if (sta) { 818 struct iwl_mvm_txq *mvmtxq = 819 iwl_mvm_txq_from_tid(sta, tid); 820 821 mvmtxq->txq_id = queue; 822 } 823 824 IWL_DEBUG_TX_QUEUES(mvm, 825 "Enabling TXQ #%d tids=0x%x\n", 826 queue, mvm->queue_info[queue].tid_bitmap); 827 828 return enable_queue; 829 } 830 831 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 832 int queue, u16 ssn, 833 const struct iwl_trans_txq_scd_cfg *cfg, 834 unsigned int wdg_timeout) 835 { 836 struct iwl_scd_txq_cfg_cmd cmd = { 837 .scd_queue = queue, 838 .action = SCD_CFG_ENABLE_QUEUE, 839 .window = cfg->frame_limit, 840 .sta_id = cfg->sta_id, 841 .ssn = cpu_to_le16(ssn), 842 .tx_fifo = cfg->fifo, 843 .aggregate = cfg->aggregate, 844 .tid = cfg->tid, 845 }; 846 bool inc_ssn; 847 848 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 849 return false; 850 851 /* Send the enabling command if we need to */ 852 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 853 return false; 854 855 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 856 NULL, wdg_timeout); 857 if (inc_ssn) 858 le16_add_cpu(&cmd.ssn, 1); 859 860 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 861 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 862 863 return inc_ssn; 864 } 865 866 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 867 { 868 struct iwl_scd_txq_cfg_cmd cmd = { 869 .scd_queue = queue, 870 .action = SCD_CFG_UPDATE_QUEUE_TID, 871 }; 872 int tid; 873 unsigned long tid_bitmap; 874 int ret; 875 876 lockdep_assert_held(&mvm->mutex); 877 878 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 879 return; 880 881 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 882 883 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 884 return; 885 886 /* Find any TID for queue */ 887 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 888 cmd.tid = tid; 889 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 890 891 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 892 if (ret) { 893 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 894 queue, ret); 895 return; 896 } 897 898 mvm->queue_info[queue].txq_tid = tid; 899 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 900 queue, tid); 901 } 902 903 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 904 { 905 struct ieee80211_sta *sta; 906 struct iwl_mvm_sta *mvmsta; 907 u8 sta_id; 908 int tid = -1; 909 unsigned long tid_bitmap; 910 unsigned int wdg_timeout; 911 int ssn; 912 int ret = true; 913 914 /* queue sharing is disabled on new TX path */ 915 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 916 return; 917 918 lockdep_assert_held(&mvm->mutex); 919 920 sta_id = mvm->queue_info[queue].ra_sta_id; 921 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 922 923 /* Find TID for queue, and make sure it is the only one on the queue */ 924 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 925 if (tid_bitmap != BIT(tid)) { 926 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 927 queue, tid_bitmap); 928 return; 929 } 930 931 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 932 tid); 933 934 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 935 lockdep_is_held(&mvm->mutex)); 936 937 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 938 return; 939 940 mvmsta = iwl_mvm_sta_from_mac80211(sta); 941 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 942 943 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 944 945 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 946 tid_to_mac80211_ac[tid], ssn, 947 wdg_timeout, true, 948 iwl_mvm_txq_from_tid(sta, tid)); 949 if (ret) { 950 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 951 return; 952 } 953 954 /* If aggs should be turned back on - do it */ 955 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 956 struct iwl_mvm_add_sta_cmd cmd = {0}; 957 958 mvmsta->tid_disable_agg &= ~BIT(tid); 959 960 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 961 cmd.sta_id = mvmsta->sta_id; 962 cmd.add_modify = STA_MODE_MODIFY; 963 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 964 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 965 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 966 967 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 968 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 969 if (!ret) { 970 IWL_DEBUG_TX_QUEUES(mvm, 971 "TXQ #%d is now aggregated again\n", 972 queue); 973 974 /* Mark queue intenally as aggregating again */ 975 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 976 } 977 } 978 979 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 980 } 981 982 /* 983 * Remove inactive TIDs of a given queue. 984 * If all queue TIDs are inactive - mark the queue as inactive 985 * If only some the queue TIDs are inactive - unmap them from the queue 986 * 987 * Returns %true if all TIDs were removed and the queue could be reused. 988 */ 989 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 990 struct iwl_mvm_sta *mvmsta, int queue, 991 unsigned long tid_bitmap, 992 unsigned long *unshare_queues, 993 unsigned long *changetid_queues) 994 { 995 int tid; 996 997 lockdep_assert_held(&mvmsta->lock); 998 lockdep_assert_held(&mvm->mutex); 999 1000 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1001 return false; 1002 1003 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1004 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1005 /* If some TFDs are still queued - don't mark TID as inactive */ 1006 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1007 tid_bitmap &= ~BIT(tid); 1008 1009 /* Don't mark as inactive any TID that has an active BA */ 1010 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1011 tid_bitmap &= ~BIT(tid); 1012 } 1013 1014 /* If all TIDs in the queue are inactive - return it can be reused */ 1015 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1016 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1017 return true; 1018 } 1019 1020 /* 1021 * If we are here, this is a shared queue and not all TIDs timed-out. 1022 * Remove the ones that did. 1023 */ 1024 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1025 u16 tid_bitmap; 1026 1027 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1028 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1029 1030 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1031 1032 /* 1033 * We need to take into account a situation in which a TXQ was 1034 * allocated to TID x, and then turned shared by adding TIDs y 1035 * and z. If TID x becomes inactive and is removed from the TXQ, 1036 * ownership must be given to one of the remaining TIDs. 1037 * This is mainly because if TID x continues - a new queue can't 1038 * be allocated for it as long as it is an owner of another TXQ. 1039 * 1040 * Mark this queue in the right bitmap, we'll send the command 1041 * to the firmware later. 1042 */ 1043 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1044 set_bit(queue, changetid_queues); 1045 1046 IWL_DEBUG_TX_QUEUES(mvm, 1047 "Removing inactive TID %d from shared Q:%d\n", 1048 tid, queue); 1049 } 1050 1051 IWL_DEBUG_TX_QUEUES(mvm, 1052 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1053 mvm->queue_info[queue].tid_bitmap); 1054 1055 /* 1056 * There may be different TIDs with the same mac queues, so make 1057 * sure all TIDs have existing corresponding mac queues enabled 1058 */ 1059 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1060 1061 /* If the queue is marked as shared - "unshare" it */ 1062 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1063 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1064 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1065 queue); 1066 set_bit(queue, unshare_queues); 1067 } 1068 1069 return false; 1070 } 1071 1072 /* 1073 * Check for inactivity - this includes checking if any queue 1074 * can be unshared and finding one (and only one) that can be 1075 * reused. 1076 * This function is also invoked as a sort of clean-up task, 1077 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1078 * 1079 * Returns the queue number, or -ENOSPC. 1080 */ 1081 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1082 { 1083 unsigned long now = jiffies; 1084 unsigned long unshare_queues = 0; 1085 unsigned long changetid_queues = 0; 1086 int i, ret, free_queue = -ENOSPC; 1087 struct ieee80211_sta *queue_owner = NULL; 1088 1089 lockdep_assert_held(&mvm->mutex); 1090 1091 if (iwl_mvm_has_new_tx_api(mvm)) 1092 return -ENOSPC; 1093 1094 rcu_read_lock(); 1095 1096 /* we skip the CMD queue below by starting at 1 */ 1097 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1098 1099 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1100 struct ieee80211_sta *sta; 1101 struct iwl_mvm_sta *mvmsta; 1102 u8 sta_id; 1103 int tid; 1104 unsigned long inactive_tid_bitmap = 0; 1105 unsigned long queue_tid_bitmap; 1106 1107 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1108 if (!queue_tid_bitmap) 1109 continue; 1110 1111 /* If TXQ isn't in active use anyway - nothing to do here... */ 1112 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1113 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1114 continue; 1115 1116 /* Check to see if there are inactive TIDs on this queue */ 1117 for_each_set_bit(tid, &queue_tid_bitmap, 1118 IWL_MAX_TID_COUNT + 1) { 1119 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1120 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1121 continue; 1122 1123 inactive_tid_bitmap |= BIT(tid); 1124 } 1125 1126 /* If all TIDs are active - finish check on this queue */ 1127 if (!inactive_tid_bitmap) 1128 continue; 1129 1130 /* 1131 * If we are here - the queue hadn't been served recently and is 1132 * in use 1133 */ 1134 1135 sta_id = mvm->queue_info[i].ra_sta_id; 1136 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1137 1138 /* 1139 * If the STA doesn't exist anymore, it isn't an error. It could 1140 * be that it was removed since getting the queues, and in this 1141 * case it should've inactivated its queues anyway. 1142 */ 1143 if (IS_ERR_OR_NULL(sta)) 1144 continue; 1145 1146 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1147 1148 spin_lock_bh(&mvmsta->lock); 1149 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1150 inactive_tid_bitmap, 1151 &unshare_queues, 1152 &changetid_queues); 1153 if (ret && free_queue < 0) { 1154 queue_owner = sta; 1155 free_queue = i; 1156 } 1157 /* only unlock sta lock - we still need the queue info lock */ 1158 spin_unlock_bh(&mvmsta->lock); 1159 } 1160 1161 1162 /* Reconfigure queues requiring reconfiguation */ 1163 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1164 iwl_mvm_unshare_queue(mvm, i); 1165 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1166 iwl_mvm_change_queue_tid(mvm, i); 1167 1168 rcu_read_unlock(); 1169 1170 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1171 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1172 alloc_for_sta); 1173 if (ret) 1174 return ret; 1175 } 1176 1177 return free_queue; 1178 } 1179 1180 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1181 struct ieee80211_sta *sta, u8 ac, int tid) 1182 { 1183 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1184 struct iwl_trans_txq_scd_cfg cfg = { 1185 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1186 .sta_id = mvmsta->sta_id, 1187 .tid = tid, 1188 .frame_limit = IWL_FRAME_LIMIT, 1189 }; 1190 unsigned int wdg_timeout = 1191 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1192 int queue = -1; 1193 u16 queue_tmp; 1194 unsigned long disable_agg_tids = 0; 1195 enum iwl_mvm_agg_state queue_state; 1196 bool shared_queue = false, inc_ssn; 1197 int ssn; 1198 unsigned long tfd_queue_mask; 1199 int ret; 1200 1201 lockdep_assert_held(&mvm->mutex); 1202 1203 if (iwl_mvm_has_new_tx_api(mvm)) 1204 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1205 1206 spin_lock_bh(&mvmsta->lock); 1207 tfd_queue_mask = mvmsta->tfd_queue_msk; 1208 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1209 spin_unlock_bh(&mvmsta->lock); 1210 1211 if (tid == IWL_MAX_TID_COUNT) { 1212 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1213 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1214 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1215 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1216 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1217 queue); 1218 1219 /* If no such queue is found, we'll use a DATA queue instead */ 1220 } 1221 1222 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1223 (mvm->queue_info[mvmsta->reserved_queue].status == 1224 IWL_MVM_QUEUE_RESERVED)) { 1225 queue = mvmsta->reserved_queue; 1226 mvm->queue_info[queue].reserved = true; 1227 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1228 } 1229 1230 if (queue < 0) 1231 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1232 IWL_MVM_DQA_MIN_DATA_QUEUE, 1233 IWL_MVM_DQA_MAX_DATA_QUEUE); 1234 if (queue < 0) { 1235 /* try harder - perhaps kill an inactive queue */ 1236 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1237 } 1238 1239 /* No free queue - we'll have to share */ 1240 if (queue <= 0) { 1241 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1242 if (queue > 0) { 1243 shared_queue = true; 1244 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1245 } 1246 } 1247 1248 /* 1249 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1250 * to make sure no one else takes it. 1251 * This will allow avoiding re-acquiring the lock at the end of the 1252 * configuration. On error we'll mark it back as free. 1253 */ 1254 if (queue > 0 && !shared_queue) 1255 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1256 1257 /* This shouldn't happen - out of queues */ 1258 if (WARN_ON(queue <= 0)) { 1259 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1260 tid, cfg.sta_id); 1261 return queue; 1262 } 1263 1264 /* 1265 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1266 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1267 * as aggregatable. 1268 * Mark all DATA queues as allowing to be aggregated at some point 1269 */ 1270 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1271 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1272 1273 IWL_DEBUG_TX_QUEUES(mvm, 1274 "Allocating %squeue #%d to sta %d on tid %d\n", 1275 shared_queue ? "shared " : "", queue, 1276 mvmsta->sta_id, tid); 1277 1278 if (shared_queue) { 1279 /* Disable any open aggs on this queue */ 1280 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1281 1282 if (disable_agg_tids) { 1283 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1284 queue); 1285 iwl_mvm_invalidate_sta_queue(mvm, queue, 1286 disable_agg_tids, false); 1287 } 1288 } 1289 1290 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1291 1292 /* 1293 * Mark queue as shared in transport if shared 1294 * Note this has to be done after queue enablement because enablement 1295 * can also set this value, and there is no indication there to shared 1296 * queues 1297 */ 1298 if (shared_queue) 1299 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1300 1301 spin_lock_bh(&mvmsta->lock); 1302 /* 1303 * This looks racy, but it is not. We have only one packet for 1304 * this ra/tid in our Tx path since we stop the Qdisc when we 1305 * need to allocate a new TFD queue. 1306 */ 1307 if (inc_ssn) { 1308 mvmsta->tid_data[tid].seq_number += 0x10; 1309 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1310 } 1311 mvmsta->tid_data[tid].txq_id = queue; 1312 mvmsta->tfd_queue_msk |= BIT(queue); 1313 queue_state = mvmsta->tid_data[tid].state; 1314 1315 if (mvmsta->reserved_queue == queue) 1316 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1317 spin_unlock_bh(&mvmsta->lock); 1318 1319 if (!shared_queue) { 1320 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1321 if (ret) 1322 goto out_err; 1323 1324 /* If we need to re-enable aggregations... */ 1325 if (queue_state == IWL_AGG_ON) { 1326 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1327 if (ret) 1328 goto out_err; 1329 } 1330 } else { 1331 /* Redirect queue, if needed */ 1332 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1333 wdg_timeout, false, 1334 iwl_mvm_txq_from_tid(sta, tid)); 1335 if (ret) 1336 goto out_err; 1337 } 1338 1339 return 0; 1340 1341 out_err: 1342 queue_tmp = queue; 1343 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid, 0); 1344 1345 return ret; 1346 } 1347 1348 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1349 { 1350 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1351 add_stream_wk); 1352 1353 mutex_lock(&mvm->mutex); 1354 1355 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1356 1357 while (!list_empty(&mvm->add_stream_txqs)) { 1358 struct iwl_mvm_txq *mvmtxq; 1359 struct ieee80211_txq *txq; 1360 u8 tid; 1361 1362 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1363 struct iwl_mvm_txq, list); 1364 1365 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1366 drv_priv); 1367 tid = txq->tid; 1368 if (tid == IEEE80211_NUM_TIDS) 1369 tid = IWL_MAX_TID_COUNT; 1370 1371 /* 1372 * We can't really do much here, but if this fails we can't 1373 * transmit anyway - so just don't transmit the frame etc. 1374 * and let them back up ... we've tried our best to allocate 1375 * a queue in the function itself. 1376 */ 1377 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1378 list_del_init(&mvmtxq->list); 1379 continue; 1380 } 1381 1382 list_del_init(&mvmtxq->list); 1383 local_bh_disable(); 1384 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1385 local_bh_enable(); 1386 } 1387 1388 mutex_unlock(&mvm->mutex); 1389 } 1390 1391 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1392 struct ieee80211_sta *sta, 1393 enum nl80211_iftype vif_type) 1394 { 1395 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1396 int queue; 1397 1398 /* queue reserving is disabled on new TX path */ 1399 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1400 return 0; 1401 1402 /* run the general cleanup/unsharing of queues */ 1403 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1404 1405 /* Make sure we have free resources for this STA */ 1406 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1407 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1408 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1409 IWL_MVM_QUEUE_FREE)) 1410 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1411 else 1412 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1413 IWL_MVM_DQA_MIN_DATA_QUEUE, 1414 IWL_MVM_DQA_MAX_DATA_QUEUE); 1415 if (queue < 0) { 1416 /* try again - this time kick out a queue if needed */ 1417 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1418 if (queue < 0) { 1419 IWL_ERR(mvm, "No available queues for new station\n"); 1420 return -ENOSPC; 1421 } 1422 } 1423 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1424 1425 mvmsta->reserved_queue = queue; 1426 1427 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1428 queue, mvmsta->sta_id); 1429 1430 return 0; 1431 } 1432 1433 /* 1434 * In DQA mode, after a HW restart the queues should be allocated as before, in 1435 * order to avoid race conditions when there are shared queues. This function 1436 * does the re-mapping and queue allocation. 1437 * 1438 * Note that re-enabling aggregations isn't done in this function. 1439 */ 1440 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1441 struct ieee80211_sta *sta) 1442 { 1443 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1444 unsigned int wdg = 1445 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1446 int i; 1447 struct iwl_trans_txq_scd_cfg cfg = { 1448 .sta_id = mvm_sta->sta_id, 1449 .frame_limit = IWL_FRAME_LIMIT, 1450 }; 1451 1452 /* Make sure reserved queue is still marked as such (if allocated) */ 1453 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1454 mvm->queue_info[mvm_sta->reserved_queue].status = 1455 IWL_MVM_QUEUE_RESERVED; 1456 1457 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1458 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1459 int txq_id = tid_data->txq_id; 1460 int ac; 1461 1462 if (txq_id == IWL_MVM_INVALID_QUEUE) 1463 continue; 1464 1465 ac = tid_to_mac80211_ac[i]; 1466 1467 if (iwl_mvm_has_new_tx_api(mvm)) { 1468 IWL_DEBUG_TX_QUEUES(mvm, 1469 "Re-mapping sta %d tid %d\n", 1470 mvm_sta->sta_id, i); 1471 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1472 i, wdg); 1473 /* 1474 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1475 * to try again later, we have no other good way of 1476 * failing here 1477 */ 1478 if (txq_id < 0) 1479 txq_id = IWL_MVM_INVALID_QUEUE; 1480 tid_data->txq_id = txq_id; 1481 1482 /* 1483 * Since we don't set the seq number after reset, and HW 1484 * sets it now, FW reset will cause the seq num to start 1485 * at 0 again, so driver will need to update it 1486 * internally as well, so it keeps in sync with real val 1487 */ 1488 tid_data->seq_number = 0; 1489 } else { 1490 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1491 1492 cfg.tid = i; 1493 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1494 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1495 txq_id == 1496 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1497 1498 IWL_DEBUG_TX_QUEUES(mvm, 1499 "Re-mapping sta %d tid %d to queue %d\n", 1500 mvm_sta->sta_id, i, txq_id); 1501 1502 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1503 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1504 } 1505 } 1506 } 1507 1508 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1509 struct iwl_mvm_int_sta *sta, 1510 const u8 *addr, 1511 u16 mac_id, u16 color) 1512 { 1513 struct iwl_mvm_add_sta_cmd cmd; 1514 int ret; 1515 u32 status = ADD_STA_SUCCESS; 1516 1517 lockdep_assert_held(&mvm->mutex); 1518 1519 memset(&cmd, 0, sizeof(cmd)); 1520 cmd.sta_id = sta->sta_id; 1521 1522 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 1523 0) >= 12 && 1524 sta->type == IWL_STA_AUX_ACTIVITY) 1525 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1526 else 1527 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1528 color)); 1529 1530 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1531 cmd.station_type = sta->type; 1532 1533 if (!iwl_mvm_has_new_tx_api(mvm)) 1534 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1535 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1536 1537 if (addr) 1538 memcpy(cmd.addr, addr, ETH_ALEN); 1539 1540 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1541 iwl_mvm_add_sta_cmd_size(mvm), 1542 &cmd, &status); 1543 if (ret) 1544 return ret; 1545 1546 switch (status & IWL_ADD_STA_STATUS_MASK) { 1547 case ADD_STA_SUCCESS: 1548 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1549 return 0; 1550 default: 1551 ret = -EIO; 1552 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1553 status); 1554 break; 1555 } 1556 return ret; 1557 } 1558 1559 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1560 struct ieee80211_vif *vif, 1561 struct ieee80211_sta *sta) 1562 { 1563 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1564 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1565 struct iwl_mvm_rxq_dup_data *dup_data; 1566 int i, ret, sta_id; 1567 bool sta_update = false; 1568 unsigned int sta_flags = 0; 1569 1570 lockdep_assert_held(&mvm->mutex); 1571 1572 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1573 sta_id = iwl_mvm_find_free_sta_id(mvm, 1574 ieee80211_vif_type_p2p(vif)); 1575 else 1576 sta_id = mvm_sta->sta_id; 1577 1578 if (sta_id == IWL_MVM_INVALID_STA) 1579 return -ENOSPC; 1580 1581 spin_lock_init(&mvm_sta->lock); 1582 1583 /* if this is a HW restart re-alloc existing queues */ 1584 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1585 struct iwl_mvm_int_sta tmp_sta = { 1586 .sta_id = sta_id, 1587 .type = mvm_sta->sta_type, 1588 }; 1589 1590 /* 1591 * First add an empty station since allocating 1592 * a queue requires a valid station 1593 */ 1594 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1595 mvmvif->id, mvmvif->color); 1596 if (ret) 1597 goto err; 1598 1599 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1600 sta_update = true; 1601 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1602 goto update_fw; 1603 } 1604 1605 mvm_sta->sta_id = sta_id; 1606 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1607 mvmvif->color); 1608 mvm_sta->vif = vif; 1609 if (!mvm->trans->trans_cfg->gen2) 1610 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1611 else 1612 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1613 mvm_sta->tx_protection = 0; 1614 mvm_sta->tt_tx_protection = false; 1615 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1616 1617 /* HW restart, don't assume the memory has been zeroed */ 1618 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1619 mvm_sta->tfd_queue_msk = 0; 1620 1621 /* for HW restart - reset everything but the sequence number */ 1622 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1623 u16 seq = mvm_sta->tid_data[i].seq_number; 1624 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1625 mvm_sta->tid_data[i].seq_number = seq; 1626 1627 /* 1628 * Mark all queues for this STA as unallocated and defer TX 1629 * frames until the queue is allocated 1630 */ 1631 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1632 } 1633 1634 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1635 struct iwl_mvm_txq *mvmtxq = 1636 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1637 1638 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1639 INIT_LIST_HEAD(&mvmtxq->list); 1640 atomic_set(&mvmtxq->tx_request, 0); 1641 } 1642 1643 mvm_sta->agg_tids = 0; 1644 1645 if (iwl_mvm_has_new_rx_api(mvm) && 1646 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1647 int q; 1648 1649 dup_data = kcalloc(mvm->trans->num_rx_queues, 1650 sizeof(*dup_data), GFP_KERNEL); 1651 if (!dup_data) 1652 return -ENOMEM; 1653 /* 1654 * Initialize all the last_seq values to 0xffff which can never 1655 * compare equal to the frame's seq_ctrl in the check in 1656 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1657 * number and fragmented packets don't reach that function. 1658 * 1659 * This thus allows receiving a packet with seqno 0 and the 1660 * retry bit set as the very first packet on a new TID. 1661 */ 1662 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1663 memset(dup_data[q].last_seq, 0xff, 1664 sizeof(dup_data[q].last_seq)); 1665 mvm_sta->dup_data = dup_data; 1666 } 1667 1668 if (!iwl_mvm_has_new_tx_api(mvm)) { 1669 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1670 ieee80211_vif_type_p2p(vif)); 1671 if (ret) 1672 goto err; 1673 } 1674 1675 /* 1676 * if rs is registered with mac80211, then "add station" will be handled 1677 * via the corresponding ops, otherwise need to notify rate scaling here 1678 */ 1679 if (iwl_mvm_has_tlc_offload(mvm)) 1680 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1681 else 1682 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1683 1684 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1685 1686 update_fw: 1687 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1688 if (ret) 1689 goto err; 1690 1691 if (vif->type == NL80211_IFTYPE_STATION) { 1692 if (!sta->tdls) { 1693 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1694 mvmvif->ap_sta_id = sta_id; 1695 } else { 1696 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1697 } 1698 } 1699 1700 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1701 1702 return 0; 1703 1704 err: 1705 return ret; 1706 } 1707 1708 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1709 bool drain) 1710 { 1711 struct iwl_mvm_add_sta_cmd cmd = {}; 1712 int ret; 1713 u32 status; 1714 1715 lockdep_assert_held(&mvm->mutex); 1716 1717 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1718 cmd.sta_id = mvmsta->sta_id; 1719 cmd.add_modify = STA_MODE_MODIFY; 1720 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1721 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1722 1723 status = ADD_STA_SUCCESS; 1724 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1725 iwl_mvm_add_sta_cmd_size(mvm), 1726 &cmd, &status); 1727 if (ret) 1728 return ret; 1729 1730 switch (status & IWL_ADD_STA_STATUS_MASK) { 1731 case ADD_STA_SUCCESS: 1732 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1733 mvmsta->sta_id); 1734 break; 1735 default: 1736 ret = -EIO; 1737 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1738 mvmsta->sta_id); 1739 break; 1740 } 1741 1742 return ret; 1743 } 1744 1745 /* 1746 * Remove a station from the FW table. Before sending the command to remove 1747 * the station validate that the station is indeed known to the driver (sanity 1748 * only). 1749 */ 1750 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1751 { 1752 struct ieee80211_sta *sta; 1753 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1754 .sta_id = sta_id, 1755 }; 1756 int ret; 1757 1758 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1759 lockdep_is_held(&mvm->mutex)); 1760 1761 /* Note: internal stations are marked as error values */ 1762 if (!sta) { 1763 IWL_ERR(mvm, "Invalid station id\n"); 1764 return -EINVAL; 1765 } 1766 1767 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1768 sizeof(rm_sta_cmd), &rm_sta_cmd); 1769 if (ret) { 1770 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1771 return ret; 1772 } 1773 1774 return 0; 1775 } 1776 1777 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1778 struct ieee80211_vif *vif, 1779 struct ieee80211_sta *sta) 1780 { 1781 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1782 int i; 1783 1784 lockdep_assert_held(&mvm->mutex); 1785 1786 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1787 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1788 continue; 1789 1790 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i, 1791 0); 1792 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1793 } 1794 1795 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1796 struct iwl_mvm_txq *mvmtxq = 1797 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1798 1799 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1800 } 1801 } 1802 1803 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1804 struct iwl_mvm_sta *mvm_sta) 1805 { 1806 int i; 1807 1808 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1809 u16 txq_id; 1810 int ret; 1811 1812 spin_lock_bh(&mvm_sta->lock); 1813 txq_id = mvm_sta->tid_data[i].txq_id; 1814 spin_unlock_bh(&mvm_sta->lock); 1815 1816 if (txq_id == IWL_MVM_INVALID_QUEUE) 1817 continue; 1818 1819 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1820 if (ret) 1821 return ret; 1822 } 1823 1824 return 0; 1825 } 1826 1827 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1828 struct ieee80211_vif *vif, 1829 struct ieee80211_sta *sta) 1830 { 1831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1832 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1833 u8 sta_id = mvm_sta->sta_id; 1834 int ret; 1835 1836 lockdep_assert_held(&mvm->mutex); 1837 1838 if (iwl_mvm_has_new_rx_api(mvm)) 1839 kfree(mvm_sta->dup_data); 1840 1841 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1842 if (ret) 1843 return ret; 1844 1845 /* flush its queues here since we are freeing mvm_sta */ 1846 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1847 if (ret) 1848 return ret; 1849 if (iwl_mvm_has_new_tx_api(mvm)) { 1850 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1851 } else { 1852 u32 q_mask = mvm_sta->tfd_queue_msk; 1853 1854 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1855 q_mask); 1856 } 1857 if (ret) 1858 return ret; 1859 1860 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1861 1862 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1863 1864 /* If there is a TXQ still marked as reserved - free it */ 1865 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1866 u8 reserved_txq = mvm_sta->reserved_queue; 1867 enum iwl_mvm_queue_status *status; 1868 1869 /* 1870 * If no traffic has gone through the reserved TXQ - it 1871 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1872 * should be manually marked as free again 1873 */ 1874 status = &mvm->queue_info[reserved_txq].status; 1875 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1876 (*status != IWL_MVM_QUEUE_FREE), 1877 "sta_id %d reserved txq %d status %d", 1878 sta_id, reserved_txq, *status)) 1879 return -EINVAL; 1880 1881 *status = IWL_MVM_QUEUE_FREE; 1882 } 1883 1884 if (vif->type == NL80211_IFTYPE_STATION && 1885 mvmvif->ap_sta_id == sta_id) { 1886 /* if associated - we can't remove the AP STA now */ 1887 if (vif->bss_conf.assoc) 1888 return ret; 1889 1890 /* unassoc - go ahead - remove the AP STA now */ 1891 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1892 } 1893 1894 /* 1895 * This shouldn't happen - the TDLS channel switch should be canceled 1896 * before the STA is removed. 1897 */ 1898 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1899 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1900 cancel_delayed_work(&mvm->tdls_cs.dwork); 1901 } 1902 1903 /* 1904 * Make sure that the tx response code sees the station as -EBUSY and 1905 * calls the drain worker. 1906 */ 1907 spin_lock_bh(&mvm_sta->lock); 1908 spin_unlock_bh(&mvm_sta->lock); 1909 1910 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1911 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1912 1913 return ret; 1914 } 1915 1916 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1917 struct ieee80211_vif *vif, 1918 u8 sta_id) 1919 { 1920 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1921 1922 lockdep_assert_held(&mvm->mutex); 1923 1924 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1925 return ret; 1926 } 1927 1928 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1929 struct iwl_mvm_int_sta *sta, 1930 u32 qmask, enum nl80211_iftype iftype, 1931 enum iwl_sta_type type) 1932 { 1933 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1934 sta->sta_id == IWL_MVM_INVALID_STA) { 1935 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1936 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1937 return -ENOSPC; 1938 } 1939 1940 sta->tfd_queue_msk = qmask; 1941 sta->type = type; 1942 1943 /* put a non-NULL value so iterating over the stations won't stop */ 1944 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1945 return 0; 1946 } 1947 1948 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1949 { 1950 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1951 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1952 sta->sta_id = IWL_MVM_INVALID_STA; 1953 } 1954 1955 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 1956 u8 sta_id, u8 fifo) 1957 { 1958 unsigned int wdg_timeout = 1959 mvm->trans->trans_cfg->base_params->wd_timeout; 1960 struct iwl_trans_txq_scd_cfg cfg = { 1961 .fifo = fifo, 1962 .sta_id = sta_id, 1963 .tid = IWL_MAX_TID_COUNT, 1964 .aggregate = false, 1965 .frame_limit = IWL_FRAME_LIMIT, 1966 }; 1967 1968 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 1969 1970 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 1971 } 1972 1973 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 1974 { 1975 unsigned int wdg_timeout = 1976 mvm->trans->trans_cfg->base_params->wd_timeout; 1977 1978 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 1979 1980 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 1981 wdg_timeout); 1982 } 1983 1984 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 1985 int maccolor, u8 *addr, 1986 struct iwl_mvm_int_sta *sta, 1987 u16 *queue, int fifo) 1988 { 1989 int ret; 1990 1991 /* Map queue to fifo - needs to happen before adding station */ 1992 if (!iwl_mvm_has_new_tx_api(mvm)) 1993 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 1994 1995 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 1996 if (ret) { 1997 if (!iwl_mvm_has_new_tx_api(mvm)) 1998 iwl_mvm_disable_txq(mvm, NULL, queue, 1999 IWL_MAX_TID_COUNT, 0); 2000 return ret; 2001 } 2002 2003 /* 2004 * For 22000 firmware and on we cannot add queue to a station unknown 2005 * to firmware so enable queue here - after the station was added 2006 */ 2007 if (iwl_mvm_has_new_tx_api(mvm)) { 2008 int txq; 2009 2010 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2011 if (txq < 0) { 2012 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2013 return txq; 2014 } 2015 2016 *queue = txq; 2017 } 2018 2019 return 0; 2020 } 2021 2022 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2023 { 2024 int ret; 2025 2026 lockdep_assert_held(&mvm->mutex); 2027 2028 /* Allocate aux station and assign to it the aux queue */ 2029 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2030 NL80211_IFTYPE_UNSPECIFIED, 2031 IWL_STA_AUX_ACTIVITY); 2032 if (ret) 2033 return ret; 2034 2035 /* 2036 * In CDB NICs we need to specify which lmac to use for aux activity 2037 * using the mac_id argument place to send lmac_id to the function 2038 */ 2039 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2040 &mvm->aux_sta, &mvm->aux_queue, 2041 IWL_MVM_TX_FIFO_MCAST); 2042 if (ret) { 2043 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2044 return ret; 2045 } 2046 2047 return 0; 2048 } 2049 2050 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2051 { 2052 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2053 2054 lockdep_assert_held(&mvm->mutex); 2055 2056 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2057 NULL, &mvm->snif_sta, 2058 &mvm->snif_queue, 2059 IWL_MVM_TX_FIFO_BE); 2060 } 2061 2062 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2063 { 2064 int ret; 2065 2066 lockdep_assert_held(&mvm->mutex); 2067 2068 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2069 return -EINVAL; 2070 2071 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT, 0); 2072 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2073 if (ret) 2074 IWL_WARN(mvm, "Failed sending remove station\n"); 2075 2076 return ret; 2077 } 2078 2079 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2080 { 2081 int ret; 2082 2083 lockdep_assert_held(&mvm->mutex); 2084 2085 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2086 return -EINVAL; 2087 2088 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT, 0); 2089 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2090 if (ret) 2091 IWL_WARN(mvm, "Failed sending remove station\n"); 2092 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2093 2094 return ret; 2095 } 2096 2097 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2098 { 2099 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2100 } 2101 2102 /* 2103 * Send the add station command for the vif's broadcast station. 2104 * Assumes that the station was already allocated. 2105 * 2106 * @mvm: the mvm component 2107 * @vif: the interface to which the broadcast station is added 2108 * @bsta: the broadcast station to add. 2109 */ 2110 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2111 { 2112 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2113 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2114 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2115 const u8 *baddr = _baddr; 2116 int queue; 2117 int ret; 2118 unsigned int wdg_timeout = 2119 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2120 struct iwl_trans_txq_scd_cfg cfg = { 2121 .fifo = IWL_MVM_TX_FIFO_VO, 2122 .sta_id = mvmvif->bcast_sta.sta_id, 2123 .tid = IWL_MAX_TID_COUNT, 2124 .aggregate = false, 2125 .frame_limit = IWL_FRAME_LIMIT, 2126 }; 2127 2128 lockdep_assert_held(&mvm->mutex); 2129 2130 if (!iwl_mvm_has_new_tx_api(mvm)) { 2131 if (vif->type == NL80211_IFTYPE_AP || 2132 vif->type == NL80211_IFTYPE_ADHOC) { 2133 queue = mvm->probe_queue; 2134 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2135 queue = mvm->p2p_dev_queue; 2136 } else { 2137 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2138 return -EINVAL; 2139 } 2140 2141 bsta->tfd_queue_msk |= BIT(queue); 2142 2143 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2144 } 2145 2146 if (vif->type == NL80211_IFTYPE_ADHOC) 2147 baddr = vif->bss_conf.bssid; 2148 2149 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2150 return -ENOSPC; 2151 2152 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2153 mvmvif->id, mvmvif->color); 2154 if (ret) 2155 return ret; 2156 2157 /* 2158 * For 22000 firmware and on we cannot add queue to a station unknown 2159 * to firmware so enable queue here - after the station was added 2160 */ 2161 if (iwl_mvm_has_new_tx_api(mvm)) { 2162 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2163 IWL_MAX_TID_COUNT, 2164 wdg_timeout); 2165 if (queue < 0) { 2166 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2167 return queue; 2168 } 2169 2170 if (vif->type == NL80211_IFTYPE_AP || 2171 vif->type == NL80211_IFTYPE_ADHOC) 2172 mvm->probe_queue = queue; 2173 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2174 mvm->p2p_dev_queue = queue; 2175 } 2176 2177 return 0; 2178 } 2179 2180 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2181 struct ieee80211_vif *vif) 2182 { 2183 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2184 u16 *queueptr, queue; 2185 2186 lockdep_assert_held(&mvm->mutex); 2187 2188 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2189 2190 switch (vif->type) { 2191 case NL80211_IFTYPE_AP: 2192 case NL80211_IFTYPE_ADHOC: 2193 queueptr = &mvm->probe_queue; 2194 break; 2195 case NL80211_IFTYPE_P2P_DEVICE: 2196 queueptr = &mvm->p2p_dev_queue; 2197 break; 2198 default: 2199 WARN(1, "Can't free bcast queue on vif type %d\n", 2200 vif->type); 2201 return; 2202 } 2203 2204 queue = *queueptr; 2205 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT, 0); 2206 if (iwl_mvm_has_new_tx_api(mvm)) 2207 return; 2208 2209 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2210 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2211 } 2212 2213 /* Send the FW a request to remove the station from it's internal data 2214 * structures, but DO NOT remove the entry from the local data structures. */ 2215 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2216 { 2217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2218 int ret; 2219 2220 lockdep_assert_held(&mvm->mutex); 2221 2222 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2223 2224 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2225 if (ret) 2226 IWL_WARN(mvm, "Failed sending remove station\n"); 2227 return ret; 2228 } 2229 2230 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2231 { 2232 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2233 2234 lockdep_assert_held(&mvm->mutex); 2235 2236 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2237 ieee80211_vif_type_p2p(vif), 2238 IWL_STA_GENERAL_PURPOSE); 2239 } 2240 2241 /* Allocate a new station entry for the broadcast station to the given vif, 2242 * and send it to the FW. 2243 * Note that each P2P mac should have its own broadcast station. 2244 * 2245 * @mvm: the mvm component 2246 * @vif: the interface to which the broadcast station is added 2247 * @bsta: the broadcast station to add. */ 2248 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2249 { 2250 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2251 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2252 int ret; 2253 2254 lockdep_assert_held(&mvm->mutex); 2255 2256 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2257 if (ret) 2258 return ret; 2259 2260 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2261 2262 if (ret) 2263 iwl_mvm_dealloc_int_sta(mvm, bsta); 2264 2265 return ret; 2266 } 2267 2268 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2269 { 2270 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2271 2272 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2273 } 2274 2275 /* 2276 * Send the FW a request to remove the station from it's internal data 2277 * structures, and in addition remove it from the local data structure. 2278 */ 2279 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2280 { 2281 int ret; 2282 2283 lockdep_assert_held(&mvm->mutex); 2284 2285 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2286 2287 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2288 2289 return ret; 2290 } 2291 2292 /* 2293 * Allocate a new station entry for the multicast station to the given vif, 2294 * and send it to the FW. 2295 * Note that each AP/GO mac should have its own multicast station. 2296 * 2297 * @mvm: the mvm component 2298 * @vif: the interface to which the multicast station is added 2299 */ 2300 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2301 { 2302 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2303 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2304 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2305 const u8 *maddr = _maddr; 2306 struct iwl_trans_txq_scd_cfg cfg = { 2307 .fifo = vif->type == NL80211_IFTYPE_AP ? 2308 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2309 .sta_id = msta->sta_id, 2310 .tid = 0, 2311 .aggregate = false, 2312 .frame_limit = IWL_FRAME_LIMIT, 2313 }; 2314 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2315 int ret; 2316 2317 lockdep_assert_held(&mvm->mutex); 2318 2319 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2320 vif->type != NL80211_IFTYPE_ADHOC)) 2321 return -ENOTSUPP; 2322 2323 /* 2324 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2325 * invalid, so make sure we use the queue we want. 2326 * Note that this is done here as we want to avoid making DQA 2327 * changes in mac80211 layer. 2328 */ 2329 if (vif->type == NL80211_IFTYPE_ADHOC) 2330 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2331 2332 /* 2333 * While in previous FWs we had to exclude cab queue from TFD queue 2334 * mask, now it is needed as any other queue. 2335 */ 2336 if (!iwl_mvm_has_new_tx_api(mvm) && 2337 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2338 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2339 timeout); 2340 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2341 } 2342 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2343 mvmvif->id, mvmvif->color); 2344 if (ret) 2345 goto err; 2346 2347 /* 2348 * Enable cab queue after the ADD_STA command is sent. 2349 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2350 * command with unknown station id, and for FW that doesn't support 2351 * station API since the cab queue is not included in the 2352 * tfd_queue_mask. 2353 */ 2354 if (iwl_mvm_has_new_tx_api(mvm)) { 2355 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2356 0, 2357 timeout); 2358 if (queue < 0) { 2359 ret = queue; 2360 goto err; 2361 } 2362 mvmvif->cab_queue = queue; 2363 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2364 IWL_UCODE_TLV_API_STA_TYPE)) 2365 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2366 timeout); 2367 2368 return 0; 2369 err: 2370 iwl_mvm_dealloc_int_sta(mvm, msta); 2371 return ret; 2372 } 2373 2374 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2375 struct ieee80211_key_conf *keyconf, 2376 bool mcast) 2377 { 2378 union { 2379 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2380 struct iwl_mvm_add_sta_key_cmd cmd; 2381 } u = {}; 2382 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2383 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2384 __le16 key_flags; 2385 int ret, size; 2386 u32 status; 2387 2388 /* This is a valid situation for GTK removal */ 2389 if (sta_id == IWL_MVM_INVALID_STA) 2390 return 0; 2391 2392 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2393 STA_KEY_FLG_KEYID_MSK); 2394 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2395 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2396 2397 if (mcast) 2398 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2399 2400 /* 2401 * The fields assigned here are in the same location at the start 2402 * of the command, so we can do this union trick. 2403 */ 2404 u.cmd.common.key_flags = key_flags; 2405 u.cmd.common.key_offset = keyconf->hw_key_idx; 2406 u.cmd.common.sta_id = sta_id; 2407 2408 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2409 2410 status = ADD_STA_SUCCESS; 2411 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2412 &status); 2413 2414 switch (status) { 2415 case ADD_STA_SUCCESS: 2416 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2417 break; 2418 default: 2419 ret = -EIO; 2420 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2421 break; 2422 } 2423 2424 return ret; 2425 } 2426 2427 /* 2428 * Send the FW a request to remove the station from it's internal data 2429 * structures, and in addition remove it from the local data structure. 2430 */ 2431 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2432 { 2433 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2434 int ret; 2435 2436 lockdep_assert_held(&mvm->mutex); 2437 2438 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2439 2440 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0, 0); 2441 2442 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2443 if (ret) 2444 IWL_WARN(mvm, "Failed sending remove station\n"); 2445 2446 return ret; 2447 } 2448 2449 #define IWL_MAX_RX_BA_SESSIONS 16 2450 2451 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2452 { 2453 struct iwl_mvm_delba_data notif = { 2454 .baid = baid, 2455 }; 2456 2457 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2458 ¬if, sizeof(notif)); 2459 }; 2460 2461 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2462 struct iwl_mvm_baid_data *data) 2463 { 2464 int i; 2465 2466 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2467 2468 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2469 int j; 2470 struct iwl_mvm_reorder_buffer *reorder_buf = 2471 &data->reorder_buf[i]; 2472 struct iwl_mvm_reorder_buf_entry *entries = 2473 &data->entries[i * data->entries_per_queue]; 2474 2475 spin_lock_bh(&reorder_buf->lock); 2476 if (likely(!reorder_buf->num_stored)) { 2477 spin_unlock_bh(&reorder_buf->lock); 2478 continue; 2479 } 2480 2481 /* 2482 * This shouldn't happen in regular DELBA since the internal 2483 * delBA notification should trigger a release of all frames in 2484 * the reorder buffer. 2485 */ 2486 WARN_ON(1); 2487 2488 for (j = 0; j < reorder_buf->buf_size; j++) 2489 __skb_queue_purge(&entries[j].e.frames); 2490 /* 2491 * Prevent timer re-arm. This prevents a very far fetched case 2492 * where we timed out on the notification. There may be prior 2493 * RX frames pending in the RX queue before the notification 2494 * that might get processed between now and the actual deletion 2495 * and we would re-arm the timer although we are deleting the 2496 * reorder buffer. 2497 */ 2498 reorder_buf->removed = true; 2499 spin_unlock_bh(&reorder_buf->lock); 2500 del_timer_sync(&reorder_buf->reorder_timer); 2501 } 2502 } 2503 2504 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2505 struct iwl_mvm_baid_data *data, 2506 u16 ssn, u16 buf_size) 2507 { 2508 int i; 2509 2510 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2511 struct iwl_mvm_reorder_buffer *reorder_buf = 2512 &data->reorder_buf[i]; 2513 struct iwl_mvm_reorder_buf_entry *entries = 2514 &data->entries[i * data->entries_per_queue]; 2515 int j; 2516 2517 reorder_buf->num_stored = 0; 2518 reorder_buf->head_sn = ssn; 2519 reorder_buf->buf_size = buf_size; 2520 /* rx reorder timer */ 2521 timer_setup(&reorder_buf->reorder_timer, 2522 iwl_mvm_reorder_timer_expired, 0); 2523 spin_lock_init(&reorder_buf->lock); 2524 reorder_buf->mvm = mvm; 2525 reorder_buf->queue = i; 2526 reorder_buf->valid = false; 2527 for (j = 0; j < reorder_buf->buf_size; j++) 2528 __skb_queue_head_init(&entries[j].e.frames); 2529 } 2530 } 2531 2532 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2533 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2534 { 2535 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2536 struct iwl_mvm_add_sta_cmd cmd = {}; 2537 struct iwl_mvm_baid_data *baid_data = NULL; 2538 int ret; 2539 u32 status; 2540 2541 lockdep_assert_held(&mvm->mutex); 2542 2543 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2544 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2545 return -ENOSPC; 2546 } 2547 2548 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2549 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2550 2551 /* sparse doesn't like the __align() so don't check */ 2552 #ifndef __CHECKER__ 2553 /* 2554 * The division below will be OK if either the cache line size 2555 * can be divided by the entry size (ALIGN will round up) or if 2556 * if the entry size can be divided by the cache line size, in 2557 * which case the ALIGN() will do nothing. 2558 */ 2559 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2560 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2561 #endif 2562 2563 /* 2564 * Upward align the reorder buffer size to fill an entire cache 2565 * line for each queue, to avoid sharing cache lines between 2566 * different queues. 2567 */ 2568 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2569 2570 /* 2571 * Allocate here so if allocation fails we can bail out early 2572 * before starting the BA session in the firmware 2573 */ 2574 baid_data = kzalloc(sizeof(*baid_data) + 2575 mvm->trans->num_rx_queues * 2576 reorder_buf_size, 2577 GFP_KERNEL); 2578 if (!baid_data) 2579 return -ENOMEM; 2580 2581 /* 2582 * This division is why we need the above BUILD_BUG_ON(), 2583 * if that doesn't hold then this will not be right. 2584 */ 2585 baid_data->entries_per_queue = 2586 reorder_buf_size / sizeof(baid_data->entries[0]); 2587 } 2588 2589 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2590 cmd.sta_id = mvm_sta->sta_id; 2591 cmd.add_modify = STA_MODE_MODIFY; 2592 if (start) { 2593 cmd.add_immediate_ba_tid = (u8) tid; 2594 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2595 cmd.rx_ba_window = cpu_to_le16(buf_size); 2596 } else { 2597 cmd.remove_immediate_ba_tid = (u8) tid; 2598 } 2599 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2600 STA_MODIFY_REMOVE_BA_TID; 2601 2602 status = ADD_STA_SUCCESS; 2603 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2604 iwl_mvm_add_sta_cmd_size(mvm), 2605 &cmd, &status); 2606 if (ret) 2607 goto out_free; 2608 2609 switch (status & IWL_ADD_STA_STATUS_MASK) { 2610 case ADD_STA_SUCCESS: 2611 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2612 start ? "start" : "stopp"); 2613 break; 2614 case ADD_STA_IMMEDIATE_BA_FAILURE: 2615 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2616 ret = -ENOSPC; 2617 break; 2618 default: 2619 ret = -EIO; 2620 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2621 start ? "start" : "stopp", status); 2622 break; 2623 } 2624 2625 if (ret) 2626 goto out_free; 2627 2628 if (start) { 2629 u8 baid; 2630 2631 mvm->rx_ba_sessions++; 2632 2633 if (!iwl_mvm_has_new_rx_api(mvm)) 2634 return 0; 2635 2636 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2637 ret = -EINVAL; 2638 goto out_free; 2639 } 2640 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2641 IWL_ADD_STA_BAID_SHIFT); 2642 baid_data->baid = baid; 2643 baid_data->timeout = timeout; 2644 baid_data->last_rx = jiffies; 2645 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2646 timer_setup(&baid_data->session_timer, 2647 iwl_mvm_rx_agg_session_expired, 0); 2648 baid_data->mvm = mvm; 2649 baid_data->tid = tid; 2650 baid_data->sta_id = mvm_sta->sta_id; 2651 2652 mvm_sta->tid_to_baid[tid] = baid; 2653 if (timeout) 2654 mod_timer(&baid_data->session_timer, 2655 TU_TO_EXP_TIME(timeout * 2)); 2656 2657 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2658 /* 2659 * protect the BA data with RCU to cover a case where our 2660 * internal RX sync mechanism will timeout (not that it's 2661 * supposed to happen) and we will free the session data while 2662 * RX is being processed in parallel 2663 */ 2664 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2665 mvm_sta->sta_id, tid, baid); 2666 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2667 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2668 } else { 2669 u8 baid = mvm_sta->tid_to_baid[tid]; 2670 2671 if (mvm->rx_ba_sessions > 0) 2672 /* check that restart flow didn't zero the counter */ 2673 mvm->rx_ba_sessions--; 2674 if (!iwl_mvm_has_new_rx_api(mvm)) 2675 return 0; 2676 2677 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2678 return -EINVAL; 2679 2680 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2681 if (WARN_ON(!baid_data)) 2682 return -EINVAL; 2683 2684 /* synchronize all rx queues so we can safely delete */ 2685 iwl_mvm_free_reorder(mvm, baid_data); 2686 del_timer_sync(&baid_data->session_timer); 2687 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2688 kfree_rcu(baid_data, rcu_head); 2689 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2690 } 2691 return 0; 2692 2693 out_free: 2694 kfree(baid_data); 2695 return ret; 2696 } 2697 2698 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2699 int tid, u8 queue, bool start) 2700 { 2701 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2702 struct iwl_mvm_add_sta_cmd cmd = {}; 2703 int ret; 2704 u32 status; 2705 2706 lockdep_assert_held(&mvm->mutex); 2707 2708 if (start) { 2709 mvm_sta->tfd_queue_msk |= BIT(queue); 2710 mvm_sta->tid_disable_agg &= ~BIT(tid); 2711 } else { 2712 /* In DQA-mode the queue isn't removed on agg termination */ 2713 mvm_sta->tid_disable_agg |= BIT(tid); 2714 } 2715 2716 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2717 cmd.sta_id = mvm_sta->sta_id; 2718 cmd.add_modify = STA_MODE_MODIFY; 2719 if (!iwl_mvm_has_new_tx_api(mvm)) 2720 cmd.modify_mask = STA_MODIFY_QUEUES; 2721 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2722 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2723 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2724 2725 status = ADD_STA_SUCCESS; 2726 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2727 iwl_mvm_add_sta_cmd_size(mvm), 2728 &cmd, &status); 2729 if (ret) 2730 return ret; 2731 2732 switch (status & IWL_ADD_STA_STATUS_MASK) { 2733 case ADD_STA_SUCCESS: 2734 break; 2735 default: 2736 ret = -EIO; 2737 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2738 start ? "start" : "stopp", status); 2739 break; 2740 } 2741 2742 return ret; 2743 } 2744 2745 const u8 tid_to_mac80211_ac[] = { 2746 IEEE80211_AC_BE, 2747 IEEE80211_AC_BK, 2748 IEEE80211_AC_BK, 2749 IEEE80211_AC_BE, 2750 IEEE80211_AC_VI, 2751 IEEE80211_AC_VI, 2752 IEEE80211_AC_VO, 2753 IEEE80211_AC_VO, 2754 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2755 }; 2756 2757 static const u8 tid_to_ucode_ac[] = { 2758 AC_BE, 2759 AC_BK, 2760 AC_BK, 2761 AC_BE, 2762 AC_VI, 2763 AC_VI, 2764 AC_VO, 2765 AC_VO, 2766 }; 2767 2768 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2769 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2770 { 2771 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2772 struct iwl_mvm_tid_data *tid_data; 2773 u16 normalized_ssn; 2774 u16 txq_id; 2775 int ret; 2776 2777 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2778 return -EINVAL; 2779 2780 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2781 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2782 IWL_ERR(mvm, 2783 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2784 mvmsta->tid_data[tid].state); 2785 return -ENXIO; 2786 } 2787 2788 lockdep_assert_held(&mvm->mutex); 2789 2790 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2791 iwl_mvm_has_new_tx_api(mvm)) { 2792 u8 ac = tid_to_mac80211_ac[tid]; 2793 2794 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2795 if (ret) 2796 return ret; 2797 } 2798 2799 spin_lock_bh(&mvmsta->lock); 2800 2801 /* 2802 * Note the possible cases: 2803 * 1. An enabled TXQ - TXQ needs to become agg'ed 2804 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2805 * it as reserved 2806 */ 2807 txq_id = mvmsta->tid_data[tid].txq_id; 2808 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2809 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2810 IWL_MVM_DQA_MIN_DATA_QUEUE, 2811 IWL_MVM_DQA_MAX_DATA_QUEUE); 2812 if (ret < 0) { 2813 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2814 goto out; 2815 } 2816 2817 txq_id = ret; 2818 2819 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2820 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2821 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2822 ret = -ENXIO; 2823 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2824 tid, IWL_MAX_HW_QUEUES - 1); 2825 goto out; 2826 2827 } else if (unlikely(mvm->queue_info[txq_id].status == 2828 IWL_MVM_QUEUE_SHARED)) { 2829 ret = -ENXIO; 2830 IWL_DEBUG_TX_QUEUES(mvm, 2831 "Can't start tid %d agg on shared queue!\n", 2832 tid); 2833 goto out; 2834 } 2835 2836 IWL_DEBUG_TX_QUEUES(mvm, 2837 "AGG for tid %d will be on queue #%d\n", 2838 tid, txq_id); 2839 2840 tid_data = &mvmsta->tid_data[tid]; 2841 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2842 tid_data->txq_id = txq_id; 2843 *ssn = tid_data->ssn; 2844 2845 IWL_DEBUG_TX_QUEUES(mvm, 2846 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2847 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2848 tid_data->next_reclaimed); 2849 2850 /* 2851 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2852 * to align the wrap around of ssn so we compare relevant values. 2853 */ 2854 normalized_ssn = tid_data->ssn; 2855 if (mvm->trans->trans_cfg->gen2) 2856 normalized_ssn &= 0xff; 2857 2858 if (normalized_ssn == tid_data->next_reclaimed) { 2859 tid_data->state = IWL_AGG_STARTING; 2860 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 2861 } else { 2862 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2863 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 2864 } 2865 2866 out: 2867 spin_unlock_bh(&mvmsta->lock); 2868 2869 return ret; 2870 } 2871 2872 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2873 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2874 bool amsdu) 2875 { 2876 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2877 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2878 unsigned int wdg_timeout = 2879 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2880 int queue, ret; 2881 bool alloc_queue = true; 2882 enum iwl_mvm_queue_status queue_status; 2883 u16 ssn; 2884 2885 struct iwl_trans_txq_scd_cfg cfg = { 2886 .sta_id = mvmsta->sta_id, 2887 .tid = tid, 2888 .frame_limit = buf_size, 2889 .aggregate = true, 2890 }; 2891 2892 /* 2893 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2894 * manager, so this function should never be called in this case. 2895 */ 2896 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2897 return -EINVAL; 2898 2899 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2900 != IWL_MAX_TID_COUNT); 2901 2902 spin_lock_bh(&mvmsta->lock); 2903 ssn = tid_data->ssn; 2904 queue = tid_data->txq_id; 2905 tid_data->state = IWL_AGG_ON; 2906 mvmsta->agg_tids |= BIT(tid); 2907 tid_data->ssn = 0xffff; 2908 tid_data->amsdu_in_ampdu_allowed = amsdu; 2909 spin_unlock_bh(&mvmsta->lock); 2910 2911 if (iwl_mvm_has_new_tx_api(mvm)) { 2912 /* 2913 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2914 * would have failed, so if we are here there is no need to 2915 * allocate a queue. 2916 * However, if aggregation size is different than the default 2917 * size, the scheduler should be reconfigured. 2918 * We cannot do this with the new TX API, so return unsupported 2919 * for now, until it will be offloaded to firmware.. 2920 * Note that if SCD default value changes - this condition 2921 * should be updated as well. 2922 */ 2923 if (buf_size < IWL_FRAME_LIMIT) 2924 return -ENOTSUPP; 2925 2926 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2927 if (ret) 2928 return -EIO; 2929 goto out; 2930 } 2931 2932 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2933 2934 queue_status = mvm->queue_info[queue].status; 2935 2936 /* Maybe there is no need to even alloc a queue... */ 2937 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2938 alloc_queue = false; 2939 2940 /* 2941 * Only reconfig the SCD for the queue if the window size has 2942 * changed from current (become smaller) 2943 */ 2944 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2945 /* 2946 * If reconfiguring an existing queue, it first must be 2947 * drained 2948 */ 2949 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2950 BIT(queue)); 2951 if (ret) { 2952 IWL_ERR(mvm, 2953 "Error draining queue before reconfig\n"); 2954 return ret; 2955 } 2956 2957 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2958 mvmsta->sta_id, tid, 2959 buf_size, ssn); 2960 if (ret) { 2961 IWL_ERR(mvm, 2962 "Error reconfiguring TXQ #%d\n", queue); 2963 return ret; 2964 } 2965 } 2966 2967 if (alloc_queue) 2968 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 2969 &cfg, wdg_timeout); 2970 2971 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2972 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2973 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2974 if (ret) 2975 return -EIO; 2976 } 2977 2978 /* No need to mark as reserved */ 2979 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2980 2981 out: 2982 /* 2983 * Even though in theory the peer could have different 2984 * aggregation reorder buffer sizes for different sessions, 2985 * our ucode doesn't allow for that and has a global limit 2986 * for each station. Therefore, use the minimum of all the 2987 * aggregation sessions and our default value. 2988 */ 2989 mvmsta->max_agg_bufsize = 2990 min(mvmsta->max_agg_bufsize, buf_size); 2991 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2992 2993 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2994 sta->addr, tid); 2995 2996 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 2997 } 2998 2999 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3000 struct iwl_mvm_sta *mvmsta, 3001 struct iwl_mvm_tid_data *tid_data) 3002 { 3003 u16 txq_id = tid_data->txq_id; 3004 3005 lockdep_assert_held(&mvm->mutex); 3006 3007 if (iwl_mvm_has_new_tx_api(mvm)) 3008 return; 3009 3010 /* 3011 * The TXQ is marked as reserved only if no traffic came through yet 3012 * This means no traffic has been sent on this TID (agg'd or not), so 3013 * we no longer have use for the queue. Since it hasn't even been 3014 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3015 * free. 3016 */ 3017 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3018 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3019 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3020 } 3021 } 3022 3023 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3024 struct ieee80211_sta *sta, u16 tid) 3025 { 3026 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3027 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3028 u16 txq_id; 3029 int err; 3030 3031 /* 3032 * If mac80211 is cleaning its state, then say that we finished since 3033 * our state has been cleared anyway. 3034 */ 3035 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3036 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3037 return 0; 3038 } 3039 3040 spin_lock_bh(&mvmsta->lock); 3041 3042 txq_id = tid_data->txq_id; 3043 3044 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3045 mvmsta->sta_id, tid, txq_id, tid_data->state); 3046 3047 mvmsta->agg_tids &= ~BIT(tid); 3048 3049 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3050 3051 switch (tid_data->state) { 3052 case IWL_AGG_ON: 3053 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3054 3055 IWL_DEBUG_TX_QUEUES(mvm, 3056 "ssn = %d, next_recl = %d\n", 3057 tid_data->ssn, tid_data->next_reclaimed); 3058 3059 tid_data->ssn = 0xffff; 3060 tid_data->state = IWL_AGG_OFF; 3061 spin_unlock_bh(&mvmsta->lock); 3062 3063 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3064 3065 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3066 return 0; 3067 case IWL_AGG_STARTING: 3068 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3069 /* 3070 * The agg session has been stopped before it was set up. This 3071 * can happen when the AddBA timer times out for example. 3072 */ 3073 3074 /* No barriers since we are under mutex */ 3075 lockdep_assert_held(&mvm->mutex); 3076 3077 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3078 tid_data->state = IWL_AGG_OFF; 3079 err = 0; 3080 break; 3081 default: 3082 IWL_ERR(mvm, 3083 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3084 mvmsta->sta_id, tid, tid_data->state); 3085 IWL_ERR(mvm, 3086 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3087 err = -EINVAL; 3088 } 3089 3090 spin_unlock_bh(&mvmsta->lock); 3091 3092 return err; 3093 } 3094 3095 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3096 struct ieee80211_sta *sta, u16 tid) 3097 { 3098 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3099 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3100 u16 txq_id; 3101 enum iwl_mvm_agg_state old_state; 3102 3103 /* 3104 * First set the agg state to OFF to avoid calling 3105 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3106 */ 3107 spin_lock_bh(&mvmsta->lock); 3108 txq_id = tid_data->txq_id; 3109 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3110 mvmsta->sta_id, tid, txq_id, tid_data->state); 3111 old_state = tid_data->state; 3112 tid_data->state = IWL_AGG_OFF; 3113 mvmsta->agg_tids &= ~BIT(tid); 3114 spin_unlock_bh(&mvmsta->lock); 3115 3116 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3117 3118 if (old_state >= IWL_AGG_ON) { 3119 iwl_mvm_drain_sta(mvm, mvmsta, true); 3120 3121 if (iwl_mvm_has_new_tx_api(mvm)) { 3122 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3123 BIT(tid))) 3124 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3125 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3126 } else { 3127 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3128 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3129 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3130 } 3131 3132 iwl_mvm_drain_sta(mvm, mvmsta, false); 3133 3134 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3135 } 3136 3137 return 0; 3138 } 3139 3140 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3141 { 3142 int i, max = -1, max_offs = -1; 3143 3144 lockdep_assert_held(&mvm->mutex); 3145 3146 /* Pick the unused key offset with the highest 'deleted' 3147 * counter. Every time a key is deleted, all the counters 3148 * are incremented and the one that was just deleted is 3149 * reset to zero. Thus, the highest counter is the one 3150 * that was deleted longest ago. Pick that one. 3151 */ 3152 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3153 if (test_bit(i, mvm->fw_key_table)) 3154 continue; 3155 if (mvm->fw_key_deleted[i] > max) { 3156 max = mvm->fw_key_deleted[i]; 3157 max_offs = i; 3158 } 3159 } 3160 3161 if (max_offs < 0) 3162 return STA_KEY_IDX_INVALID; 3163 3164 return max_offs; 3165 } 3166 3167 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3168 struct ieee80211_vif *vif, 3169 struct ieee80211_sta *sta) 3170 { 3171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3172 3173 if (sta) 3174 return iwl_mvm_sta_from_mac80211(sta); 3175 3176 /* 3177 * The device expects GTKs for station interfaces to be 3178 * installed as GTKs for the AP station. If we have no 3179 * station ID, then use AP's station ID. 3180 */ 3181 if (vif->type == NL80211_IFTYPE_STATION && 3182 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3183 u8 sta_id = mvmvif->ap_sta_id; 3184 3185 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3186 lockdep_is_held(&mvm->mutex)); 3187 3188 /* 3189 * It is possible that the 'sta' parameter is NULL, 3190 * for example when a GTK is removed - the sta_id will then 3191 * be the AP ID, and no station was passed by mac80211. 3192 */ 3193 if (IS_ERR_OR_NULL(sta)) 3194 return NULL; 3195 3196 return iwl_mvm_sta_from_mac80211(sta); 3197 } 3198 3199 return NULL; 3200 } 3201 3202 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3203 { 3204 int i; 3205 3206 for (i = len - 1; i >= 0; i--) { 3207 if (pn1[i] > pn2[i]) 3208 return 1; 3209 if (pn1[i] < pn2[i]) 3210 return -1; 3211 } 3212 3213 return 0; 3214 } 3215 3216 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3217 u32 sta_id, 3218 struct ieee80211_key_conf *key, bool mcast, 3219 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3220 u8 key_offset, bool mfp) 3221 { 3222 union { 3223 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3224 struct iwl_mvm_add_sta_key_cmd cmd; 3225 } u = {}; 3226 __le16 key_flags; 3227 int ret; 3228 u32 status; 3229 u16 keyidx; 3230 u64 pn = 0; 3231 int i, size; 3232 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3233 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3234 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3235 ADD_STA_KEY, 3236 new_api ? 2 : 1); 3237 3238 if (sta_id == IWL_MVM_INVALID_STA) 3239 return -EINVAL; 3240 3241 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3242 STA_KEY_FLG_KEYID_MSK; 3243 key_flags = cpu_to_le16(keyidx); 3244 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3245 3246 switch (key->cipher) { 3247 case WLAN_CIPHER_SUITE_TKIP: 3248 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3249 if (api_ver >= 2) { 3250 memcpy((void *)&u.cmd.tx_mic_key, 3251 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3252 IWL_MIC_KEY_SIZE); 3253 3254 memcpy((void *)&u.cmd.rx_mic_key, 3255 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3256 IWL_MIC_KEY_SIZE); 3257 pn = atomic64_read(&key->tx_pn); 3258 3259 } else { 3260 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3261 for (i = 0; i < 5; i++) 3262 u.cmd_v1.tkip_rx_ttak[i] = 3263 cpu_to_le16(tkip_p1k[i]); 3264 } 3265 memcpy(u.cmd.common.key, key->key, key->keylen); 3266 break; 3267 case WLAN_CIPHER_SUITE_CCMP: 3268 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3269 memcpy(u.cmd.common.key, key->key, key->keylen); 3270 if (api_ver >= 2) 3271 pn = atomic64_read(&key->tx_pn); 3272 break; 3273 case WLAN_CIPHER_SUITE_WEP104: 3274 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3275 fallthrough; 3276 case WLAN_CIPHER_SUITE_WEP40: 3277 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3278 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3279 break; 3280 case WLAN_CIPHER_SUITE_GCMP_256: 3281 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3282 fallthrough; 3283 case WLAN_CIPHER_SUITE_GCMP: 3284 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3285 memcpy(u.cmd.common.key, key->key, key->keylen); 3286 if (api_ver >= 2) 3287 pn = atomic64_read(&key->tx_pn); 3288 break; 3289 default: 3290 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3291 memcpy(u.cmd.common.key, key->key, key->keylen); 3292 } 3293 3294 if (mcast) 3295 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3296 if (mfp) 3297 key_flags |= cpu_to_le16(STA_KEY_MFP); 3298 3299 u.cmd.common.key_offset = key_offset; 3300 u.cmd.common.key_flags = key_flags; 3301 u.cmd.common.sta_id = sta_id; 3302 3303 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3304 i = 0; 3305 else 3306 i = -1; 3307 3308 for (; i < IEEE80211_NUM_TIDS; i++) { 3309 struct ieee80211_key_seq seq = {}; 3310 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3311 int rx_pn_len = 8; 3312 /* there's a hole at 2/3 in FW format depending on version */ 3313 int hole = api_ver >= 3 ? 0 : 2; 3314 3315 ieee80211_get_key_rx_seq(key, i, &seq); 3316 3317 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3318 rx_pn[0] = seq.tkip.iv16; 3319 rx_pn[1] = seq.tkip.iv16 >> 8; 3320 rx_pn[2 + hole] = seq.tkip.iv32; 3321 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3322 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3323 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3324 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3325 rx_pn = seq.hw.seq; 3326 rx_pn_len = seq.hw.seq_len; 3327 } else { 3328 rx_pn[0] = seq.ccmp.pn[0]; 3329 rx_pn[1] = seq.ccmp.pn[1]; 3330 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3331 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3332 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3333 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3334 } 3335 3336 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3337 rx_pn_len) > 0) 3338 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3339 rx_pn_len); 3340 } 3341 3342 if (api_ver >= 2) { 3343 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3344 size = sizeof(u.cmd); 3345 } else { 3346 size = sizeof(u.cmd_v1); 3347 } 3348 3349 status = ADD_STA_SUCCESS; 3350 if (cmd_flags & CMD_ASYNC) 3351 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3352 &u.cmd); 3353 else 3354 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3355 &u.cmd, &status); 3356 3357 switch (status) { 3358 case ADD_STA_SUCCESS: 3359 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3360 break; 3361 default: 3362 ret = -EIO; 3363 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3364 break; 3365 } 3366 3367 return ret; 3368 } 3369 3370 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3371 struct ieee80211_key_conf *keyconf, 3372 u8 sta_id, bool remove_key) 3373 { 3374 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3375 3376 /* verify the key details match the required command's expectations */ 3377 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3378 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3379 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3380 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3381 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3382 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3383 return -EINVAL; 3384 3385 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3386 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3387 return -EINVAL; 3388 3389 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3390 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3391 3392 if (remove_key) { 3393 /* This is a valid situation for IGTK */ 3394 if (sta_id == IWL_MVM_INVALID_STA) 3395 return 0; 3396 3397 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3398 } else { 3399 struct ieee80211_key_seq seq; 3400 const u8 *pn; 3401 3402 switch (keyconf->cipher) { 3403 case WLAN_CIPHER_SUITE_AES_CMAC: 3404 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3405 break; 3406 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3407 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3408 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3409 break; 3410 default: 3411 return -EINVAL; 3412 } 3413 3414 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3415 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3416 igtk_cmd.ctrl_flags |= 3417 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3418 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3419 pn = seq.aes_cmac.pn; 3420 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3421 ((u64) pn[4] << 8) | 3422 ((u64) pn[3] << 16) | 3423 ((u64) pn[2] << 24) | 3424 ((u64) pn[1] << 32) | 3425 ((u64) pn[0] << 40)); 3426 } 3427 3428 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3429 remove_key ? "removing" : "installing", 3430 keyconf->keyidx >= 6 ? "B" : "", 3431 keyconf->keyidx, igtk_cmd.sta_id); 3432 3433 if (!iwl_mvm_has_new_rx_api(mvm)) { 3434 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3435 .ctrl_flags = igtk_cmd.ctrl_flags, 3436 .key_id = igtk_cmd.key_id, 3437 .sta_id = igtk_cmd.sta_id, 3438 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3439 }; 3440 3441 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3442 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3443 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3444 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3445 } 3446 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3447 sizeof(igtk_cmd), &igtk_cmd); 3448 } 3449 3450 3451 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3452 struct ieee80211_vif *vif, 3453 struct ieee80211_sta *sta) 3454 { 3455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3456 3457 if (sta) 3458 return sta->addr; 3459 3460 if (vif->type == NL80211_IFTYPE_STATION && 3461 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3462 u8 sta_id = mvmvif->ap_sta_id; 3463 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3464 lockdep_is_held(&mvm->mutex)); 3465 return sta->addr; 3466 } 3467 3468 3469 return NULL; 3470 } 3471 3472 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3473 struct ieee80211_vif *vif, 3474 struct ieee80211_sta *sta, 3475 struct ieee80211_key_conf *keyconf, 3476 u8 key_offset, 3477 bool mcast) 3478 { 3479 const u8 *addr; 3480 struct ieee80211_key_seq seq; 3481 u16 p1k[5]; 3482 u32 sta_id; 3483 bool mfp = false; 3484 3485 if (sta) { 3486 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3487 3488 sta_id = mvm_sta->sta_id; 3489 mfp = sta->mfp; 3490 } else if (vif->type == NL80211_IFTYPE_AP && 3491 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3493 3494 sta_id = mvmvif->mcast_sta.sta_id; 3495 } else { 3496 IWL_ERR(mvm, "Failed to find station id\n"); 3497 return -EINVAL; 3498 } 3499 3500 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3501 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3502 /* get phase 1 key from mac80211 */ 3503 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3504 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3505 3506 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3507 seq.tkip.iv32, p1k, 0, key_offset, 3508 mfp); 3509 } 3510 3511 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3512 0, NULL, 0, key_offset, mfp); 3513 } 3514 3515 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3516 struct ieee80211_vif *vif, 3517 struct ieee80211_sta *sta, 3518 struct ieee80211_key_conf *keyconf, 3519 u8 key_offset) 3520 { 3521 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3522 struct iwl_mvm_sta *mvm_sta; 3523 u8 sta_id = IWL_MVM_INVALID_STA; 3524 int ret; 3525 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3526 3527 lockdep_assert_held(&mvm->mutex); 3528 3529 if (vif->type != NL80211_IFTYPE_AP || 3530 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3531 /* Get the station id from the mvm local station table */ 3532 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3533 if (!mvm_sta) { 3534 IWL_ERR(mvm, "Failed to find station\n"); 3535 return -EINVAL; 3536 } 3537 sta_id = mvm_sta->sta_id; 3538 3539 /* 3540 * It is possible that the 'sta' parameter is NULL, and thus 3541 * there is a need to retrieve the sta from the local station 3542 * table. 3543 */ 3544 if (!sta) { 3545 sta = rcu_dereference_protected( 3546 mvm->fw_id_to_mac_id[sta_id], 3547 lockdep_is_held(&mvm->mutex)); 3548 if (IS_ERR_OR_NULL(sta)) { 3549 IWL_ERR(mvm, "Invalid station id\n"); 3550 return -EINVAL; 3551 } 3552 } 3553 3554 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3555 return -EINVAL; 3556 } else { 3557 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3558 3559 sta_id = mvmvif->mcast_sta.sta_id; 3560 } 3561 3562 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3563 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3564 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3565 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3566 goto end; 3567 } 3568 3569 /* If the key_offset is not pre-assigned, we need to find a 3570 * new offset to use. In normal cases, the offset is not 3571 * pre-assigned, but during HW_RESTART we want to reuse the 3572 * same indices, so we pass them when this function is called. 3573 * 3574 * In D3 entry, we need to hardcoded the indices (because the 3575 * firmware hardcodes the PTK offset to 0). In this case, we 3576 * need to make sure we don't overwrite the hw_key_idx in the 3577 * keyconf structure, because otherwise we cannot configure 3578 * the original ones back when resuming. 3579 */ 3580 if (key_offset == STA_KEY_IDX_INVALID) { 3581 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3582 if (key_offset == STA_KEY_IDX_INVALID) 3583 return -ENOSPC; 3584 keyconf->hw_key_idx = key_offset; 3585 } 3586 3587 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3588 if (ret) 3589 goto end; 3590 3591 /* 3592 * For WEP, the same key is used for multicast and unicast. Upload it 3593 * again, using the same key offset, and now pointing the other one 3594 * to the same key slot (offset). 3595 * If this fails, remove the original as well. 3596 */ 3597 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3598 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3599 sta) { 3600 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3601 key_offset, !mcast); 3602 if (ret) { 3603 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3604 goto end; 3605 } 3606 } 3607 3608 __set_bit(key_offset, mvm->fw_key_table); 3609 3610 end: 3611 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3612 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3613 sta ? sta->addr : zero_addr, ret); 3614 return ret; 3615 } 3616 3617 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3618 struct ieee80211_vif *vif, 3619 struct ieee80211_sta *sta, 3620 struct ieee80211_key_conf *keyconf) 3621 { 3622 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3623 struct iwl_mvm_sta *mvm_sta; 3624 u8 sta_id = IWL_MVM_INVALID_STA; 3625 int ret, i; 3626 3627 lockdep_assert_held(&mvm->mutex); 3628 3629 /* Get the station from the mvm local station table */ 3630 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3631 if (mvm_sta) 3632 sta_id = mvm_sta->sta_id; 3633 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3634 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3635 3636 3637 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3638 keyconf->keyidx, sta_id); 3639 3640 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3641 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3642 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3643 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3644 3645 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3646 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3647 keyconf->hw_key_idx); 3648 return -ENOENT; 3649 } 3650 3651 /* track which key was deleted last */ 3652 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3653 if (mvm->fw_key_deleted[i] < U8_MAX) 3654 mvm->fw_key_deleted[i]++; 3655 } 3656 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3657 3658 if (sta && !mvm_sta) { 3659 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3660 return 0; 3661 } 3662 3663 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3664 if (ret) 3665 return ret; 3666 3667 /* delete WEP key twice to get rid of (now useless) offset */ 3668 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3669 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3670 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3671 3672 return ret; 3673 } 3674 3675 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3676 struct ieee80211_vif *vif, 3677 struct ieee80211_key_conf *keyconf, 3678 struct ieee80211_sta *sta, u32 iv32, 3679 u16 *phase1key) 3680 { 3681 struct iwl_mvm_sta *mvm_sta; 3682 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3683 bool mfp = sta ? sta->mfp : false; 3684 3685 rcu_read_lock(); 3686 3687 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3688 if (WARN_ON_ONCE(!mvm_sta)) 3689 goto unlock; 3690 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3691 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3692 mfp); 3693 3694 unlock: 3695 rcu_read_unlock(); 3696 } 3697 3698 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3699 struct ieee80211_sta *sta) 3700 { 3701 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3702 struct iwl_mvm_add_sta_cmd cmd = { 3703 .add_modify = STA_MODE_MODIFY, 3704 .sta_id = mvmsta->sta_id, 3705 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3706 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3707 }; 3708 int ret; 3709 3710 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3711 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3712 if (ret) 3713 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3714 } 3715 3716 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3717 struct ieee80211_sta *sta, 3718 enum ieee80211_frame_release_type reason, 3719 u16 cnt, u16 tids, bool more_data, 3720 bool single_sta_queue) 3721 { 3722 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3723 struct iwl_mvm_add_sta_cmd cmd = { 3724 .add_modify = STA_MODE_MODIFY, 3725 .sta_id = mvmsta->sta_id, 3726 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3727 .sleep_tx_count = cpu_to_le16(cnt), 3728 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3729 }; 3730 int tid, ret; 3731 unsigned long _tids = tids; 3732 3733 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3734 * Note that this field is reserved and unused by firmware not 3735 * supporting GO uAPSD, so it's safe to always do this. 3736 */ 3737 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3738 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3739 3740 /* If we're releasing frames from aggregation or dqa queues then check 3741 * if all the queues that we're releasing frames from, combined, have: 3742 * - more frames than the service period, in which case more_data 3743 * needs to be set 3744 * - fewer than 'cnt' frames, in which case we need to adjust the 3745 * firmware command (but do that unconditionally) 3746 */ 3747 if (single_sta_queue) { 3748 int remaining = cnt; 3749 int sleep_tx_count; 3750 3751 spin_lock_bh(&mvmsta->lock); 3752 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3753 struct iwl_mvm_tid_data *tid_data; 3754 u16 n_queued; 3755 3756 tid_data = &mvmsta->tid_data[tid]; 3757 3758 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3759 if (n_queued > remaining) { 3760 more_data = true; 3761 remaining = 0; 3762 break; 3763 } 3764 remaining -= n_queued; 3765 } 3766 sleep_tx_count = cnt - remaining; 3767 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3768 mvmsta->sleep_tx_count = sleep_tx_count; 3769 spin_unlock_bh(&mvmsta->lock); 3770 3771 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3772 if (WARN_ON(cnt - remaining == 0)) { 3773 ieee80211_sta_eosp(sta); 3774 return; 3775 } 3776 } 3777 3778 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3779 if (more_data) 3780 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3781 3782 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3783 mvmsta->next_status_eosp = true; 3784 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3785 } else { 3786 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3787 } 3788 3789 /* block the Tx queues until the FW updated the sleep Tx count */ 3790 iwl_trans_block_txq_ptrs(mvm->trans, true); 3791 3792 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3793 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3794 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3795 if (ret) 3796 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3797 } 3798 3799 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3800 struct iwl_rx_cmd_buffer *rxb) 3801 { 3802 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3803 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3804 struct ieee80211_sta *sta; 3805 u32 sta_id = le32_to_cpu(notif->sta_id); 3806 3807 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3808 return; 3809 3810 rcu_read_lock(); 3811 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3812 if (!IS_ERR_OR_NULL(sta)) 3813 ieee80211_sta_eosp(sta); 3814 rcu_read_unlock(); 3815 } 3816 3817 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3818 struct iwl_mvm_sta *mvmsta, bool disable) 3819 { 3820 struct iwl_mvm_add_sta_cmd cmd = { 3821 .add_modify = STA_MODE_MODIFY, 3822 .sta_id = mvmsta->sta_id, 3823 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3824 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3825 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3826 }; 3827 int ret; 3828 3829 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3830 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3831 if (ret) 3832 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3833 } 3834 3835 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3836 struct ieee80211_sta *sta, 3837 bool disable) 3838 { 3839 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3840 3841 spin_lock_bh(&mvm_sta->lock); 3842 3843 if (mvm_sta->disable_tx == disable) { 3844 spin_unlock_bh(&mvm_sta->lock); 3845 return; 3846 } 3847 3848 mvm_sta->disable_tx = disable; 3849 3850 /* 3851 * If sta PS state is handled by mac80211, tell it to start/stop 3852 * queuing tx for this station. 3853 */ 3854 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 3855 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3856 3857 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3858 3859 spin_unlock_bh(&mvm_sta->lock); 3860 } 3861 3862 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3863 struct iwl_mvm_vif *mvmvif, 3864 struct iwl_mvm_int_sta *sta, 3865 bool disable) 3866 { 3867 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3868 struct iwl_mvm_add_sta_cmd cmd = { 3869 .add_modify = STA_MODE_MODIFY, 3870 .sta_id = sta->sta_id, 3871 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3872 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3873 .mac_id_n_color = cpu_to_le32(id), 3874 }; 3875 int ret; 3876 3877 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3878 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3879 if (ret) 3880 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3881 } 3882 3883 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3884 struct iwl_mvm_vif *mvmvif, 3885 bool disable) 3886 { 3887 struct ieee80211_sta *sta; 3888 struct iwl_mvm_sta *mvm_sta; 3889 int i; 3890 3891 rcu_read_lock(); 3892 3893 /* Block/unblock all the stations of the given mvmvif */ 3894 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 3895 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 3896 if (IS_ERR_OR_NULL(sta)) 3897 continue; 3898 3899 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3900 if (mvm_sta->mac_id_n_color != 3901 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3902 continue; 3903 3904 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3905 } 3906 3907 rcu_read_unlock(); 3908 3909 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3910 return; 3911 3912 /* Need to block/unblock also multicast station */ 3913 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3914 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3915 &mvmvif->mcast_sta, disable); 3916 3917 /* 3918 * Only unblock the broadcast station (FW blocks it for immediate 3919 * quiet, not the driver) 3920 */ 3921 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3922 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3923 &mvmvif->bcast_sta, disable); 3924 } 3925 3926 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3927 { 3928 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3929 struct iwl_mvm_sta *mvmsta; 3930 3931 rcu_read_lock(); 3932 3933 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3934 3935 if (!WARN_ON(!mvmsta)) 3936 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3937 3938 rcu_read_unlock(); 3939 } 3940 3941 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3942 { 3943 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3944 3945 /* 3946 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3947 * to align the wrap around of ssn so we compare relevant values. 3948 */ 3949 if (mvm->trans->trans_cfg->gen2) 3950 sn &= 0xff; 3951 3952 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3953 } 3954 3955 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3956 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 3957 u8 *key, u32 key_len) 3958 { 3959 int ret; 3960 u16 queue; 3961 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3962 struct ieee80211_key_conf *keyconf; 3963 3964 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 3965 NL80211_IFTYPE_UNSPECIFIED, 3966 IWL_STA_LINK); 3967 if (ret) 3968 return ret; 3969 3970 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 3971 addr, sta, &queue, 3972 IWL_MVM_TX_FIFO_BE); 3973 if (ret) 3974 goto out; 3975 3976 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 3977 if (!keyconf) { 3978 ret = -ENOBUFS; 3979 goto out; 3980 } 3981 3982 keyconf->cipher = cipher; 3983 memcpy(keyconf->key, key, key_len); 3984 keyconf->keylen = key_len; 3985 3986 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 3987 0, NULL, 0, 0, true); 3988 kfree(keyconf); 3989 return 0; 3990 out: 3991 iwl_mvm_dealloc_int_sta(mvm, sta); 3992 return ret; 3993 } 3994