1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 28 enum nl80211_iftype iftype) 29 { 30 int sta_id; 31 u32 reserved_ids = 0; 32 33 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 34 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 35 36 lockdep_assert_held(&mvm->mutex); 37 38 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 39 if (iftype != NL80211_IFTYPE_STATION) 40 reserved_ids = BIT(0); 41 42 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 43 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 44 if (BIT(sta_id) & reserved_ids) 45 continue; 46 47 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 48 lockdep_is_held(&mvm->mutex))) 49 return sta_id; 50 } 51 return IWL_MVM_INVALID_STA; 52 } 53 54 /* send station add/update command to firmware */ 55 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 56 bool update, unsigned int flags) 57 { 58 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 59 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 60 .sta_id = mvm_sta->sta_id, 61 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 62 .add_modify = update ? 1 : 0, 63 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 64 STA_FLG_MIMO_EN_MSK | 65 STA_FLG_RTS_MIMO_PROT), 66 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 67 }; 68 int ret; 69 u32 status; 70 u32 agg_size = 0, mpdu_dens = 0; 71 72 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 73 add_sta_cmd.station_type = mvm_sta->sta_type; 74 75 if (!update || (flags & STA_MODIFY_QUEUES)) { 76 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 77 78 if (!iwl_mvm_has_new_tx_api(mvm)) { 79 add_sta_cmd.tfd_queue_msk = 80 cpu_to_le32(mvm_sta->tfd_queue_msk); 81 82 if (flags & STA_MODIFY_QUEUES) 83 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 84 } else { 85 WARN_ON(flags & STA_MODIFY_QUEUES); 86 } 87 } 88 89 switch (sta->bandwidth) { 90 case IEEE80211_STA_RX_BW_320: 91 case IEEE80211_STA_RX_BW_160: 92 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 93 fallthrough; 94 case IEEE80211_STA_RX_BW_80: 95 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 96 fallthrough; 97 case IEEE80211_STA_RX_BW_40: 98 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 99 fallthrough; 100 case IEEE80211_STA_RX_BW_20: 101 if (sta->ht_cap.ht_supported) 102 add_sta_cmd.station_flags |= 103 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 104 break; 105 } 106 107 switch (sta->rx_nss) { 108 case 1: 109 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 110 break; 111 case 2: 112 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 113 break; 114 case 3 ... 8: 115 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 116 break; 117 } 118 119 switch (sta->smps_mode) { 120 case IEEE80211_SMPS_AUTOMATIC: 121 case IEEE80211_SMPS_NUM_MODES: 122 WARN_ON(1); 123 break; 124 case IEEE80211_SMPS_STATIC: 125 /* override NSS */ 126 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 127 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 128 break; 129 case IEEE80211_SMPS_DYNAMIC: 130 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 131 break; 132 case IEEE80211_SMPS_OFF: 133 /* nothing */ 134 break; 135 } 136 137 if (sta->ht_cap.ht_supported) { 138 add_sta_cmd.station_flags_msk |= 139 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 140 STA_FLG_AGG_MPDU_DENS_MSK); 141 142 mpdu_dens = sta->ht_cap.ampdu_density; 143 } 144 145 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 146 add_sta_cmd.station_flags_msk |= 147 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 148 STA_FLG_AGG_MPDU_DENS_MSK); 149 150 mpdu_dens = le16_get_bits(sta->he_6ghz_capa.capa, 151 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 152 agg_size = le16_get_bits(sta->he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 154 } else 155 if (sta->vht_cap.vht_supported) { 156 agg_size = sta->vht_cap.cap & 157 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 158 agg_size >>= 159 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 160 } else if (sta->ht_cap.ht_supported) { 161 agg_size = sta->ht_cap.ampdu_factor; 162 } 163 164 /* D6.0 10.12.2 A-MPDU length limit rules 165 * A STA indicates the maximum length of the A-MPDU preEOF padding 166 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 167 * Exponent field in its HT Capabilities, VHT Capabilities, 168 * and HE 6 GHz Band Capabilities elements (if present) and the 169 * Maximum AMPDU Length Exponent Extension field in its HE 170 * Capabilities element 171 */ 172 if (sta->he_cap.has_he) 173 agg_size += u8_get_bits(sta->he_cap.he_cap_elem.mac_cap_info[3], 174 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 175 176 /* Limit to max A-MPDU supported by FW */ 177 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 178 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 179 STA_FLG_MAX_AGG_SIZE_SHIFT); 180 181 add_sta_cmd.station_flags |= 182 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 183 add_sta_cmd.station_flags |= 184 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 185 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 186 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 187 188 if (sta->wme) { 189 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 190 191 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 192 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 193 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 194 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 195 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 196 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 197 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 198 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 199 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 200 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 201 } 202 203 status = ADD_STA_SUCCESS; 204 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 205 iwl_mvm_add_sta_cmd_size(mvm), 206 &add_sta_cmd, &status); 207 if (ret) 208 return ret; 209 210 switch (status & IWL_ADD_STA_STATUS_MASK) { 211 case ADD_STA_SUCCESS: 212 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 213 break; 214 default: 215 ret = -EIO; 216 IWL_ERR(mvm, "ADD_STA failed\n"); 217 break; 218 } 219 220 return ret; 221 } 222 223 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 224 { 225 struct iwl_mvm_baid_data *data = 226 from_timer(data, t, session_timer); 227 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 228 struct iwl_mvm_baid_data *ba_data; 229 struct ieee80211_sta *sta; 230 struct iwl_mvm_sta *mvm_sta; 231 unsigned long timeout; 232 233 rcu_read_lock(); 234 235 ba_data = rcu_dereference(*rcu_ptr); 236 237 if (WARN_ON(!ba_data)) 238 goto unlock; 239 240 if (!ba_data->timeout) 241 goto unlock; 242 243 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 244 if (time_is_after_jiffies(timeout)) { 245 mod_timer(&ba_data->session_timer, timeout); 246 goto unlock; 247 } 248 249 /* Timer expired */ 250 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 251 252 /* 253 * sta should be valid unless the following happens: 254 * The firmware asserts which triggers a reconfig flow, but 255 * the reconfig fails before we set the pointer to sta into 256 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 257 * A-MDPU and hence the timer continues to run. Then, the 258 * timer expires and sta is NULL. 259 */ 260 if (!sta) 261 goto unlock; 262 263 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 264 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 265 sta->addr, ba_data->tid); 266 unlock: 267 rcu_read_unlock(); 268 } 269 270 /* Disable aggregations for a bitmap of TIDs for a given station */ 271 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 272 unsigned long disable_agg_tids, 273 bool remove_queue) 274 { 275 struct iwl_mvm_add_sta_cmd cmd = {}; 276 struct ieee80211_sta *sta; 277 struct iwl_mvm_sta *mvmsta; 278 u32 status; 279 u8 sta_id; 280 281 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 282 return -EINVAL; 283 284 sta_id = mvm->queue_info[queue].ra_sta_id; 285 286 rcu_read_lock(); 287 288 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 289 290 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 291 rcu_read_unlock(); 292 return -EINVAL; 293 } 294 295 mvmsta = iwl_mvm_sta_from_mac80211(sta); 296 297 mvmsta->tid_disable_agg |= disable_agg_tids; 298 299 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 300 cmd.sta_id = mvmsta->sta_id; 301 cmd.add_modify = STA_MODE_MODIFY; 302 cmd.modify_mask = STA_MODIFY_QUEUES; 303 if (disable_agg_tids) 304 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 305 if (remove_queue) 306 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 307 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 308 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 309 310 rcu_read_unlock(); 311 312 /* Notify FW of queue removal from the STA queues */ 313 status = ADD_STA_SUCCESS; 314 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 315 iwl_mvm_add_sta_cmd_size(mvm), 316 &cmd, &status); 317 } 318 319 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 320 u16 *queueptr, u8 tid) 321 { 322 int queue = *queueptr; 323 struct iwl_scd_txq_cfg_cmd cmd = { 324 .scd_queue = queue, 325 .action = SCD_CFG_DISABLE_QUEUE, 326 }; 327 int ret; 328 329 lockdep_assert_held(&mvm->mutex); 330 331 if (iwl_mvm_has_new_tx_api(mvm)) { 332 if (mvm->sta_remove_requires_queue_remove) { 333 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 334 SCD_QUEUE_CONFIG_CMD); 335 struct iwl_scd_queue_cfg_cmd remove_cmd = { 336 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 337 .u.remove.queue = cpu_to_le32(queue), 338 }; 339 340 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 341 sizeof(remove_cmd), 342 &remove_cmd); 343 } else { 344 ret = 0; 345 } 346 347 iwl_trans_txq_free(mvm->trans, queue); 348 *queueptr = IWL_MVM_INVALID_QUEUE; 349 350 return ret; 351 } 352 353 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 354 return 0; 355 356 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 357 358 cmd.action = mvm->queue_info[queue].tid_bitmap ? 359 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 360 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 361 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 362 363 IWL_DEBUG_TX_QUEUES(mvm, 364 "Disabling TXQ #%d tids=0x%x\n", 365 queue, 366 mvm->queue_info[queue].tid_bitmap); 367 368 /* If the queue is still enabled - nothing left to do in this func */ 369 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 370 return 0; 371 372 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 373 cmd.tid = mvm->queue_info[queue].txq_tid; 374 375 /* Make sure queue info is correct even though we overwrite it */ 376 WARN(mvm->queue_info[queue].tid_bitmap, 377 "TXQ #%d info out-of-sync - tids=0x%x\n", 378 queue, mvm->queue_info[queue].tid_bitmap); 379 380 /* If we are here - the queue is freed and we can zero out these vals */ 381 mvm->queue_info[queue].tid_bitmap = 0; 382 383 if (sta) { 384 struct iwl_mvm_txq *mvmtxq = 385 iwl_mvm_txq_from_tid(sta, tid); 386 387 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 388 } 389 390 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 391 mvm->queue_info[queue].reserved = false; 392 393 iwl_trans_txq_disable(mvm->trans, queue, false); 394 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 395 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 396 397 if (ret) 398 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 399 queue, ret); 400 return ret; 401 } 402 403 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 404 { 405 struct ieee80211_sta *sta; 406 struct iwl_mvm_sta *mvmsta; 407 unsigned long tid_bitmap; 408 unsigned long agg_tids = 0; 409 u8 sta_id; 410 int tid; 411 412 lockdep_assert_held(&mvm->mutex); 413 414 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 415 return -EINVAL; 416 417 sta_id = mvm->queue_info[queue].ra_sta_id; 418 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 419 420 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 421 lockdep_is_held(&mvm->mutex)); 422 423 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 424 return -EINVAL; 425 426 mvmsta = iwl_mvm_sta_from_mac80211(sta); 427 428 spin_lock_bh(&mvmsta->lock); 429 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 430 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 431 agg_tids |= BIT(tid); 432 } 433 spin_unlock_bh(&mvmsta->lock); 434 435 return agg_tids; 436 } 437 438 /* 439 * Remove a queue from a station's resources. 440 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 441 * doesn't disable the queue 442 */ 443 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 444 { 445 struct ieee80211_sta *sta; 446 struct iwl_mvm_sta *mvmsta; 447 unsigned long tid_bitmap; 448 unsigned long disable_agg_tids = 0; 449 u8 sta_id; 450 int tid; 451 452 lockdep_assert_held(&mvm->mutex); 453 454 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 455 return -EINVAL; 456 457 sta_id = mvm->queue_info[queue].ra_sta_id; 458 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 459 460 rcu_read_lock(); 461 462 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 463 464 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 465 rcu_read_unlock(); 466 return 0; 467 } 468 469 mvmsta = iwl_mvm_sta_from_mac80211(sta); 470 471 spin_lock_bh(&mvmsta->lock); 472 /* Unmap MAC queues and TIDs from this queue */ 473 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 474 struct iwl_mvm_txq *mvmtxq = 475 iwl_mvm_txq_from_tid(sta, tid); 476 477 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 478 disable_agg_tids |= BIT(tid); 479 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 480 481 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 482 } 483 484 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 485 spin_unlock_bh(&mvmsta->lock); 486 487 rcu_read_unlock(); 488 489 /* 490 * The TX path may have been using this TXQ_ID from the tid_data, 491 * so make sure it's no longer running so that we can safely reuse 492 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 493 * above, but nothing guarantees we've stopped using them. Thus, 494 * without this, we could get to iwl_mvm_disable_txq() and remove 495 * the queue while still sending frames to it. 496 */ 497 synchronize_net(); 498 499 return disable_agg_tids; 500 } 501 502 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 503 struct ieee80211_sta *old_sta, 504 u8 new_sta_id) 505 { 506 struct iwl_mvm_sta *mvmsta; 507 u8 sta_id, tid; 508 unsigned long disable_agg_tids = 0; 509 bool same_sta; 510 u16 queue_tmp = queue; 511 int ret; 512 513 lockdep_assert_held(&mvm->mutex); 514 515 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 516 return -EINVAL; 517 518 sta_id = mvm->queue_info[queue].ra_sta_id; 519 tid = mvm->queue_info[queue].txq_tid; 520 521 same_sta = sta_id == new_sta_id; 522 523 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 524 if (WARN_ON(!mvmsta)) 525 return -EINVAL; 526 527 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 528 /* Disable the queue */ 529 if (disable_agg_tids) 530 iwl_mvm_invalidate_sta_queue(mvm, queue, 531 disable_agg_tids, false); 532 533 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid); 534 if (ret) { 535 IWL_ERR(mvm, 536 "Failed to free inactive queue %d (ret=%d)\n", 537 queue, ret); 538 539 return ret; 540 } 541 542 /* If TXQ is allocated to another STA, update removal in FW */ 543 if (!same_sta) 544 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 545 546 return 0; 547 } 548 549 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 550 unsigned long tfd_queue_mask, u8 ac) 551 { 552 int queue = 0; 553 u8 ac_to_queue[IEEE80211_NUM_ACS]; 554 int i; 555 556 /* 557 * This protects us against grabbing a queue that's being reconfigured 558 * by the inactivity checker. 559 */ 560 lockdep_assert_held(&mvm->mutex); 561 562 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 563 return -EINVAL; 564 565 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 566 567 /* See what ACs the existing queues for this STA have */ 568 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 569 /* Only DATA queues can be shared */ 570 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 571 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 572 continue; 573 574 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 575 } 576 577 /* 578 * The queue to share is chosen only from DATA queues as follows (in 579 * descending priority): 580 * 1. An AC_BE queue 581 * 2. Same AC queue 582 * 3. Highest AC queue that is lower than new AC 583 * 4. Any existing AC (there always is at least 1 DATA queue) 584 */ 585 586 /* Priority 1: An AC_BE queue */ 587 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 588 queue = ac_to_queue[IEEE80211_AC_BE]; 589 /* Priority 2: Same AC queue */ 590 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 591 queue = ac_to_queue[ac]; 592 /* Priority 3a: If new AC is VO and VI exists - use VI */ 593 else if (ac == IEEE80211_AC_VO && 594 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 595 queue = ac_to_queue[IEEE80211_AC_VI]; 596 /* Priority 3b: No BE so only AC less than the new one is BK */ 597 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 598 queue = ac_to_queue[IEEE80211_AC_BK]; 599 /* Priority 4a: No BE nor BK - use VI if exists */ 600 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 601 queue = ac_to_queue[IEEE80211_AC_VI]; 602 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 603 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 604 queue = ac_to_queue[IEEE80211_AC_VO]; 605 606 /* Make sure queue found (or not) is legal */ 607 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 608 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 609 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 610 IWL_ERR(mvm, "No DATA queues available to share\n"); 611 return -ENOSPC; 612 } 613 614 return queue; 615 } 616 617 /* Re-configure the SCD for a queue that has already been configured */ 618 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 619 int sta_id, int tid, int frame_limit, u16 ssn) 620 { 621 struct iwl_scd_txq_cfg_cmd cmd = { 622 .scd_queue = queue, 623 .action = SCD_CFG_ENABLE_QUEUE, 624 .window = frame_limit, 625 .sta_id = sta_id, 626 .ssn = cpu_to_le16(ssn), 627 .tx_fifo = fifo, 628 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 629 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 630 .tid = tid, 631 }; 632 int ret; 633 634 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 635 return -EINVAL; 636 637 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 638 "Trying to reconfig unallocated queue %d\n", queue)) 639 return -ENXIO; 640 641 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 642 643 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 644 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 645 queue, fifo, ret); 646 647 return ret; 648 } 649 650 /* 651 * If a given queue has a higher AC than the TID stream that is being compared 652 * to, the queue needs to be redirected to the lower AC. This function does that 653 * in such a case, otherwise - if no redirection required - it does nothing, 654 * unless the %force param is true. 655 */ 656 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 657 int ac, int ssn, unsigned int wdg_timeout, 658 bool force, struct iwl_mvm_txq *txq) 659 { 660 struct iwl_scd_txq_cfg_cmd cmd = { 661 .scd_queue = queue, 662 .action = SCD_CFG_DISABLE_QUEUE, 663 }; 664 bool shared_queue; 665 int ret; 666 667 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 668 return -EINVAL; 669 670 /* 671 * If the AC is lower than current one - FIFO needs to be redirected to 672 * the lowest one of the streams in the queue. Check if this is needed 673 * here. 674 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 675 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 676 * we need to check if the numerical value of X is LARGER than of Y. 677 */ 678 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 679 IWL_DEBUG_TX_QUEUES(mvm, 680 "No redirection needed on TXQ #%d\n", 681 queue); 682 return 0; 683 } 684 685 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 686 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 687 cmd.tid = mvm->queue_info[queue].txq_tid; 688 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 689 690 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 691 queue, iwl_mvm_ac_to_tx_fifo[ac]); 692 693 /* Stop the queue and wait for it to empty */ 694 txq->stopped = true; 695 696 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 697 if (ret) { 698 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 699 queue); 700 ret = -EIO; 701 goto out; 702 } 703 704 /* Before redirecting the queue we need to de-activate it */ 705 iwl_trans_txq_disable(mvm->trans, queue, false); 706 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 707 if (ret) 708 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 709 ret); 710 711 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 712 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 713 714 /* Update the TID "owner" of the queue */ 715 mvm->queue_info[queue].txq_tid = tid; 716 717 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 718 719 /* Redirect to lower AC */ 720 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 721 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 722 723 /* Update AC marking of the queue */ 724 mvm->queue_info[queue].mac80211_ac = ac; 725 726 /* 727 * Mark queue as shared in transport if shared 728 * Note this has to be done after queue enablement because enablement 729 * can also set this value, and there is no indication there to shared 730 * queues 731 */ 732 if (shared_queue) 733 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 734 735 out: 736 /* Continue using the queue */ 737 txq->stopped = false; 738 739 return ret; 740 } 741 742 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 743 u8 minq, u8 maxq) 744 { 745 int i; 746 747 lockdep_assert_held(&mvm->mutex); 748 749 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 750 "max queue %d >= num_of_queues (%d)", maxq, 751 mvm->trans->trans_cfg->base_params->num_of_queues)) 752 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 753 754 /* This should not be hit with new TX path */ 755 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 756 return -ENOSPC; 757 758 /* Start by looking for a free queue */ 759 for (i = minq; i <= maxq; i++) 760 if (mvm->queue_info[i].tid_bitmap == 0 && 761 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 762 return i; 763 764 return -ENOSPC; 765 } 766 767 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 768 u8 sta_id, u8 tid, unsigned int timeout) 769 { 770 int queue, size; 771 772 if (tid == IWL_MAX_TID_COUNT) { 773 tid = IWL_MGMT_TID; 774 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 775 mvm->trans->cfg->min_txq_size); 776 } else { 777 struct ieee80211_sta *sta; 778 779 rcu_read_lock(); 780 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 781 782 /* this queue isn't used for traffic (cab_queue) */ 783 if (IS_ERR_OR_NULL(sta)) { 784 size = IWL_MGMT_QUEUE_SIZE; 785 } else if (sta->he_cap.has_he) { 786 /* support for 256 ba size */ 787 size = IWL_DEFAULT_QUEUE_SIZE_HE; 788 } else { 789 size = IWL_DEFAULT_QUEUE_SIZE; 790 } 791 792 rcu_read_unlock(); 793 } 794 795 /* take the min with bc tbl entries allowed */ 796 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 797 798 /* size needs to be power of 2 values for calculating read/write pointers */ 799 size = rounddown_pow_of_two(size); 800 801 do { 802 queue = iwl_trans_txq_alloc(mvm->trans, 0, BIT(sta_id), 803 tid, size, timeout); 804 805 if (queue < 0) 806 IWL_DEBUG_TX_QUEUES(mvm, 807 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 808 size, sta_id, tid, queue); 809 size /= 2; 810 } while (queue < 0 && size >= 16); 811 812 if (queue < 0) 813 return queue; 814 815 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 816 queue, sta_id, tid); 817 818 return queue; 819 } 820 821 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 822 struct ieee80211_sta *sta, u8 ac, 823 int tid) 824 { 825 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 826 struct iwl_mvm_txq *mvmtxq = 827 iwl_mvm_txq_from_tid(sta, tid); 828 unsigned int wdg_timeout = 829 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 830 int queue = -1; 831 832 lockdep_assert_held(&mvm->mutex); 833 834 IWL_DEBUG_TX_QUEUES(mvm, 835 "Allocating queue for sta %d on tid %d\n", 836 mvmsta->sta_id, tid); 837 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 838 if (queue < 0) 839 return queue; 840 841 mvmtxq->txq_id = queue; 842 mvm->tvqm_info[queue].txq_tid = tid; 843 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 844 845 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 846 847 spin_lock_bh(&mvmsta->lock); 848 mvmsta->tid_data[tid].txq_id = queue; 849 spin_unlock_bh(&mvmsta->lock); 850 851 return 0; 852 } 853 854 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 855 struct ieee80211_sta *sta, 856 int queue, u8 sta_id, u8 tid) 857 { 858 bool enable_queue = true; 859 860 /* Make sure this TID isn't already enabled */ 861 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 862 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 863 queue, tid); 864 return false; 865 } 866 867 /* Update mappings and refcounts */ 868 if (mvm->queue_info[queue].tid_bitmap) 869 enable_queue = false; 870 871 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 872 mvm->queue_info[queue].ra_sta_id = sta_id; 873 874 if (enable_queue) { 875 if (tid != IWL_MAX_TID_COUNT) 876 mvm->queue_info[queue].mac80211_ac = 877 tid_to_mac80211_ac[tid]; 878 else 879 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 880 881 mvm->queue_info[queue].txq_tid = tid; 882 } 883 884 if (sta) { 885 struct iwl_mvm_txq *mvmtxq = 886 iwl_mvm_txq_from_tid(sta, tid); 887 888 mvmtxq->txq_id = queue; 889 } 890 891 IWL_DEBUG_TX_QUEUES(mvm, 892 "Enabling TXQ #%d tids=0x%x\n", 893 queue, mvm->queue_info[queue].tid_bitmap); 894 895 return enable_queue; 896 } 897 898 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 899 int queue, u16 ssn, 900 const struct iwl_trans_txq_scd_cfg *cfg, 901 unsigned int wdg_timeout) 902 { 903 struct iwl_scd_txq_cfg_cmd cmd = { 904 .scd_queue = queue, 905 .action = SCD_CFG_ENABLE_QUEUE, 906 .window = cfg->frame_limit, 907 .sta_id = cfg->sta_id, 908 .ssn = cpu_to_le16(ssn), 909 .tx_fifo = cfg->fifo, 910 .aggregate = cfg->aggregate, 911 .tid = cfg->tid, 912 }; 913 bool inc_ssn; 914 915 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 916 return false; 917 918 /* Send the enabling command if we need to */ 919 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 920 return false; 921 922 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 923 NULL, wdg_timeout); 924 if (inc_ssn) 925 le16_add_cpu(&cmd.ssn, 1); 926 927 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 928 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 929 930 return inc_ssn; 931 } 932 933 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 934 { 935 struct iwl_scd_txq_cfg_cmd cmd = { 936 .scd_queue = queue, 937 .action = SCD_CFG_UPDATE_QUEUE_TID, 938 }; 939 int tid; 940 unsigned long tid_bitmap; 941 int ret; 942 943 lockdep_assert_held(&mvm->mutex); 944 945 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 946 return; 947 948 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 949 950 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 951 return; 952 953 /* Find any TID for queue */ 954 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 955 cmd.tid = tid; 956 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 957 958 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 959 if (ret) { 960 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 961 queue, ret); 962 return; 963 } 964 965 mvm->queue_info[queue].txq_tid = tid; 966 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 967 queue, tid); 968 } 969 970 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 971 { 972 struct ieee80211_sta *sta; 973 struct iwl_mvm_sta *mvmsta; 974 u8 sta_id; 975 int tid = -1; 976 unsigned long tid_bitmap; 977 unsigned int wdg_timeout; 978 int ssn; 979 int ret = true; 980 981 /* queue sharing is disabled on new TX path */ 982 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 983 return; 984 985 lockdep_assert_held(&mvm->mutex); 986 987 sta_id = mvm->queue_info[queue].ra_sta_id; 988 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 989 990 /* Find TID for queue, and make sure it is the only one on the queue */ 991 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 992 if (tid_bitmap != BIT(tid)) { 993 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 994 queue, tid_bitmap); 995 return; 996 } 997 998 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 999 tid); 1000 1001 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1002 lockdep_is_held(&mvm->mutex)); 1003 1004 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1005 return; 1006 1007 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1008 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1009 1010 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1011 1012 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1013 tid_to_mac80211_ac[tid], ssn, 1014 wdg_timeout, true, 1015 iwl_mvm_txq_from_tid(sta, tid)); 1016 if (ret) { 1017 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1018 return; 1019 } 1020 1021 /* If aggs should be turned back on - do it */ 1022 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1023 struct iwl_mvm_add_sta_cmd cmd = {0}; 1024 1025 mvmsta->tid_disable_agg &= ~BIT(tid); 1026 1027 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1028 cmd.sta_id = mvmsta->sta_id; 1029 cmd.add_modify = STA_MODE_MODIFY; 1030 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1031 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1032 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1033 1034 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1035 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1036 if (!ret) { 1037 IWL_DEBUG_TX_QUEUES(mvm, 1038 "TXQ #%d is now aggregated again\n", 1039 queue); 1040 1041 /* Mark queue intenally as aggregating again */ 1042 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1043 } 1044 } 1045 1046 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1047 } 1048 1049 /* 1050 * Remove inactive TIDs of a given queue. 1051 * If all queue TIDs are inactive - mark the queue as inactive 1052 * If only some the queue TIDs are inactive - unmap them from the queue 1053 * 1054 * Returns %true if all TIDs were removed and the queue could be reused. 1055 */ 1056 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1057 struct iwl_mvm_sta *mvmsta, int queue, 1058 unsigned long tid_bitmap, 1059 unsigned long *unshare_queues, 1060 unsigned long *changetid_queues) 1061 { 1062 int tid; 1063 1064 lockdep_assert_held(&mvmsta->lock); 1065 lockdep_assert_held(&mvm->mutex); 1066 1067 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1068 return false; 1069 1070 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1071 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1072 /* If some TFDs are still queued - don't mark TID as inactive */ 1073 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1074 tid_bitmap &= ~BIT(tid); 1075 1076 /* Don't mark as inactive any TID that has an active BA */ 1077 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1078 tid_bitmap &= ~BIT(tid); 1079 } 1080 1081 /* If all TIDs in the queue are inactive - return it can be reused */ 1082 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1083 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1084 return true; 1085 } 1086 1087 /* 1088 * If we are here, this is a shared queue and not all TIDs timed-out. 1089 * Remove the ones that did. 1090 */ 1091 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1092 u16 q_tid_bitmap; 1093 1094 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1095 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1096 1097 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1098 1099 /* 1100 * We need to take into account a situation in which a TXQ was 1101 * allocated to TID x, and then turned shared by adding TIDs y 1102 * and z. If TID x becomes inactive and is removed from the TXQ, 1103 * ownership must be given to one of the remaining TIDs. 1104 * This is mainly because if TID x continues - a new queue can't 1105 * be allocated for it as long as it is an owner of another TXQ. 1106 * 1107 * Mark this queue in the right bitmap, we'll send the command 1108 * to the firmware later. 1109 */ 1110 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1111 set_bit(queue, changetid_queues); 1112 1113 IWL_DEBUG_TX_QUEUES(mvm, 1114 "Removing inactive TID %d from shared Q:%d\n", 1115 tid, queue); 1116 } 1117 1118 IWL_DEBUG_TX_QUEUES(mvm, 1119 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1120 mvm->queue_info[queue].tid_bitmap); 1121 1122 /* 1123 * There may be different TIDs with the same mac queues, so make 1124 * sure all TIDs have existing corresponding mac queues enabled 1125 */ 1126 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1127 1128 /* If the queue is marked as shared - "unshare" it */ 1129 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1130 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1131 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1132 queue); 1133 set_bit(queue, unshare_queues); 1134 } 1135 1136 return false; 1137 } 1138 1139 /* 1140 * Check for inactivity - this includes checking if any queue 1141 * can be unshared and finding one (and only one) that can be 1142 * reused. 1143 * This function is also invoked as a sort of clean-up task, 1144 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1145 * 1146 * Returns the queue number, or -ENOSPC. 1147 */ 1148 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1149 { 1150 unsigned long now = jiffies; 1151 unsigned long unshare_queues = 0; 1152 unsigned long changetid_queues = 0; 1153 int i, ret, free_queue = -ENOSPC; 1154 struct ieee80211_sta *queue_owner = NULL; 1155 1156 lockdep_assert_held(&mvm->mutex); 1157 1158 if (iwl_mvm_has_new_tx_api(mvm)) 1159 return -ENOSPC; 1160 1161 rcu_read_lock(); 1162 1163 /* we skip the CMD queue below by starting at 1 */ 1164 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1165 1166 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1167 struct ieee80211_sta *sta; 1168 struct iwl_mvm_sta *mvmsta; 1169 u8 sta_id; 1170 int tid; 1171 unsigned long inactive_tid_bitmap = 0; 1172 unsigned long queue_tid_bitmap; 1173 1174 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1175 if (!queue_tid_bitmap) 1176 continue; 1177 1178 /* If TXQ isn't in active use anyway - nothing to do here... */ 1179 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1180 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1181 continue; 1182 1183 /* Check to see if there are inactive TIDs on this queue */ 1184 for_each_set_bit(tid, &queue_tid_bitmap, 1185 IWL_MAX_TID_COUNT + 1) { 1186 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1187 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1188 continue; 1189 1190 inactive_tid_bitmap |= BIT(tid); 1191 } 1192 1193 /* If all TIDs are active - finish check on this queue */ 1194 if (!inactive_tid_bitmap) 1195 continue; 1196 1197 /* 1198 * If we are here - the queue hadn't been served recently and is 1199 * in use 1200 */ 1201 1202 sta_id = mvm->queue_info[i].ra_sta_id; 1203 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1204 1205 /* 1206 * If the STA doesn't exist anymore, it isn't an error. It could 1207 * be that it was removed since getting the queues, and in this 1208 * case it should've inactivated its queues anyway. 1209 */ 1210 if (IS_ERR_OR_NULL(sta)) 1211 continue; 1212 1213 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1214 1215 spin_lock_bh(&mvmsta->lock); 1216 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1217 inactive_tid_bitmap, 1218 &unshare_queues, 1219 &changetid_queues); 1220 if (ret && free_queue < 0) { 1221 queue_owner = sta; 1222 free_queue = i; 1223 } 1224 /* only unlock sta lock - we still need the queue info lock */ 1225 spin_unlock_bh(&mvmsta->lock); 1226 } 1227 1228 1229 /* Reconfigure queues requiring reconfiguation */ 1230 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1231 iwl_mvm_unshare_queue(mvm, i); 1232 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1233 iwl_mvm_change_queue_tid(mvm, i); 1234 1235 rcu_read_unlock(); 1236 1237 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1238 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1239 alloc_for_sta); 1240 if (ret) 1241 return ret; 1242 } 1243 1244 return free_queue; 1245 } 1246 1247 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1248 struct ieee80211_sta *sta, u8 ac, int tid) 1249 { 1250 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1251 struct iwl_trans_txq_scd_cfg cfg = { 1252 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1253 .sta_id = mvmsta->sta_id, 1254 .tid = tid, 1255 .frame_limit = IWL_FRAME_LIMIT, 1256 }; 1257 unsigned int wdg_timeout = 1258 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1259 int queue = -1; 1260 u16 queue_tmp; 1261 unsigned long disable_agg_tids = 0; 1262 enum iwl_mvm_agg_state queue_state; 1263 bool shared_queue = false, inc_ssn; 1264 int ssn; 1265 unsigned long tfd_queue_mask; 1266 int ret; 1267 1268 lockdep_assert_held(&mvm->mutex); 1269 1270 if (iwl_mvm_has_new_tx_api(mvm)) 1271 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1272 1273 spin_lock_bh(&mvmsta->lock); 1274 tfd_queue_mask = mvmsta->tfd_queue_msk; 1275 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1276 spin_unlock_bh(&mvmsta->lock); 1277 1278 if (tid == IWL_MAX_TID_COUNT) { 1279 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1280 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1281 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1282 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1283 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1284 queue); 1285 1286 /* If no such queue is found, we'll use a DATA queue instead */ 1287 } 1288 1289 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1290 (mvm->queue_info[mvmsta->reserved_queue].status == 1291 IWL_MVM_QUEUE_RESERVED)) { 1292 queue = mvmsta->reserved_queue; 1293 mvm->queue_info[queue].reserved = true; 1294 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1295 } 1296 1297 if (queue < 0) 1298 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1299 IWL_MVM_DQA_MIN_DATA_QUEUE, 1300 IWL_MVM_DQA_MAX_DATA_QUEUE); 1301 if (queue < 0) { 1302 /* try harder - perhaps kill an inactive queue */ 1303 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1304 } 1305 1306 /* No free queue - we'll have to share */ 1307 if (queue <= 0) { 1308 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1309 if (queue > 0) { 1310 shared_queue = true; 1311 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1312 } 1313 } 1314 1315 /* 1316 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1317 * to make sure no one else takes it. 1318 * This will allow avoiding re-acquiring the lock at the end of the 1319 * configuration. On error we'll mark it back as free. 1320 */ 1321 if (queue > 0 && !shared_queue) 1322 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1323 1324 /* This shouldn't happen - out of queues */ 1325 if (WARN_ON(queue <= 0)) { 1326 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1327 tid, cfg.sta_id); 1328 return queue; 1329 } 1330 1331 /* 1332 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1333 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1334 * as aggregatable. 1335 * Mark all DATA queues as allowing to be aggregated at some point 1336 */ 1337 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1338 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1339 1340 IWL_DEBUG_TX_QUEUES(mvm, 1341 "Allocating %squeue #%d to sta %d on tid %d\n", 1342 shared_queue ? "shared " : "", queue, 1343 mvmsta->sta_id, tid); 1344 1345 if (shared_queue) { 1346 /* Disable any open aggs on this queue */ 1347 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1348 1349 if (disable_agg_tids) { 1350 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1351 queue); 1352 iwl_mvm_invalidate_sta_queue(mvm, queue, 1353 disable_agg_tids, false); 1354 } 1355 } 1356 1357 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1358 1359 /* 1360 * Mark queue as shared in transport if shared 1361 * Note this has to be done after queue enablement because enablement 1362 * can also set this value, and there is no indication there to shared 1363 * queues 1364 */ 1365 if (shared_queue) 1366 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1367 1368 spin_lock_bh(&mvmsta->lock); 1369 /* 1370 * This looks racy, but it is not. We have only one packet for 1371 * this ra/tid in our Tx path since we stop the Qdisc when we 1372 * need to allocate a new TFD queue. 1373 */ 1374 if (inc_ssn) { 1375 mvmsta->tid_data[tid].seq_number += 0x10; 1376 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1377 } 1378 mvmsta->tid_data[tid].txq_id = queue; 1379 mvmsta->tfd_queue_msk |= BIT(queue); 1380 queue_state = mvmsta->tid_data[tid].state; 1381 1382 if (mvmsta->reserved_queue == queue) 1383 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1384 spin_unlock_bh(&mvmsta->lock); 1385 1386 if (!shared_queue) { 1387 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1388 if (ret) 1389 goto out_err; 1390 1391 /* If we need to re-enable aggregations... */ 1392 if (queue_state == IWL_AGG_ON) { 1393 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1394 if (ret) 1395 goto out_err; 1396 } 1397 } else { 1398 /* Redirect queue, if needed */ 1399 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1400 wdg_timeout, false, 1401 iwl_mvm_txq_from_tid(sta, tid)); 1402 if (ret) 1403 goto out_err; 1404 } 1405 1406 return 0; 1407 1408 out_err: 1409 queue_tmp = queue; 1410 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid); 1411 1412 return ret; 1413 } 1414 1415 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1416 { 1417 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1418 add_stream_wk); 1419 1420 mutex_lock(&mvm->mutex); 1421 1422 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1423 1424 while (!list_empty(&mvm->add_stream_txqs)) { 1425 struct iwl_mvm_txq *mvmtxq; 1426 struct ieee80211_txq *txq; 1427 u8 tid; 1428 1429 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1430 struct iwl_mvm_txq, list); 1431 1432 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1433 drv_priv); 1434 tid = txq->tid; 1435 if (tid == IEEE80211_NUM_TIDS) 1436 tid = IWL_MAX_TID_COUNT; 1437 1438 /* 1439 * We can't really do much here, but if this fails we can't 1440 * transmit anyway - so just don't transmit the frame etc. 1441 * and let them back up ... we've tried our best to allocate 1442 * a queue in the function itself. 1443 */ 1444 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1445 list_del_init(&mvmtxq->list); 1446 continue; 1447 } 1448 1449 list_del_init(&mvmtxq->list); 1450 local_bh_disable(); 1451 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1452 local_bh_enable(); 1453 } 1454 1455 mutex_unlock(&mvm->mutex); 1456 } 1457 1458 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1459 struct ieee80211_sta *sta, 1460 enum nl80211_iftype vif_type) 1461 { 1462 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1463 int queue; 1464 1465 /* queue reserving is disabled on new TX path */ 1466 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1467 return 0; 1468 1469 /* run the general cleanup/unsharing of queues */ 1470 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1471 1472 /* Make sure we have free resources for this STA */ 1473 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1474 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1475 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1476 IWL_MVM_QUEUE_FREE)) 1477 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1478 else 1479 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1480 IWL_MVM_DQA_MIN_DATA_QUEUE, 1481 IWL_MVM_DQA_MAX_DATA_QUEUE); 1482 if (queue < 0) { 1483 /* try again - this time kick out a queue if needed */ 1484 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1485 if (queue < 0) { 1486 IWL_ERR(mvm, "No available queues for new station\n"); 1487 return -ENOSPC; 1488 } 1489 } 1490 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1491 1492 mvmsta->reserved_queue = queue; 1493 1494 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1495 queue, mvmsta->sta_id); 1496 1497 return 0; 1498 } 1499 1500 /* 1501 * In DQA mode, after a HW restart the queues should be allocated as before, in 1502 * order to avoid race conditions when there are shared queues. This function 1503 * does the re-mapping and queue allocation. 1504 * 1505 * Note that re-enabling aggregations isn't done in this function. 1506 */ 1507 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1508 struct ieee80211_sta *sta) 1509 { 1510 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1511 unsigned int wdg = 1512 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1513 int i; 1514 struct iwl_trans_txq_scd_cfg cfg = { 1515 .sta_id = mvm_sta->sta_id, 1516 .frame_limit = IWL_FRAME_LIMIT, 1517 }; 1518 1519 /* Make sure reserved queue is still marked as such (if allocated) */ 1520 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1521 mvm->queue_info[mvm_sta->reserved_queue].status = 1522 IWL_MVM_QUEUE_RESERVED; 1523 1524 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1525 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1526 int txq_id = tid_data->txq_id; 1527 int ac; 1528 1529 if (txq_id == IWL_MVM_INVALID_QUEUE) 1530 continue; 1531 1532 ac = tid_to_mac80211_ac[i]; 1533 1534 if (iwl_mvm_has_new_tx_api(mvm)) { 1535 IWL_DEBUG_TX_QUEUES(mvm, 1536 "Re-mapping sta %d tid %d\n", 1537 mvm_sta->sta_id, i); 1538 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1539 i, wdg); 1540 /* 1541 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1542 * to try again later, we have no other good way of 1543 * failing here 1544 */ 1545 if (txq_id < 0) 1546 txq_id = IWL_MVM_INVALID_QUEUE; 1547 tid_data->txq_id = txq_id; 1548 1549 /* 1550 * Since we don't set the seq number after reset, and HW 1551 * sets it now, FW reset will cause the seq num to start 1552 * at 0 again, so driver will need to update it 1553 * internally as well, so it keeps in sync with real val 1554 */ 1555 tid_data->seq_number = 0; 1556 } else { 1557 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1558 1559 cfg.tid = i; 1560 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1561 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1562 txq_id == 1563 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1564 1565 IWL_DEBUG_TX_QUEUES(mvm, 1566 "Re-mapping sta %d tid %d to queue %d\n", 1567 mvm_sta->sta_id, i, txq_id); 1568 1569 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1570 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1571 } 1572 } 1573 } 1574 1575 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1576 struct iwl_mvm_int_sta *sta, 1577 const u8 *addr, 1578 u16 mac_id, u16 color) 1579 { 1580 struct iwl_mvm_add_sta_cmd cmd; 1581 int ret; 1582 u32 status = ADD_STA_SUCCESS; 1583 1584 lockdep_assert_held(&mvm->mutex); 1585 1586 memset(&cmd, 0, sizeof(cmd)); 1587 cmd.sta_id = sta->sta_id; 1588 1589 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1590 sta->type == IWL_STA_AUX_ACTIVITY) 1591 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1592 else 1593 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1594 color)); 1595 1596 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1597 cmd.station_type = sta->type; 1598 1599 if (!iwl_mvm_has_new_tx_api(mvm)) 1600 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1601 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1602 1603 if (addr) 1604 memcpy(cmd.addr, addr, ETH_ALEN); 1605 1606 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1607 iwl_mvm_add_sta_cmd_size(mvm), 1608 &cmd, &status); 1609 if (ret) 1610 return ret; 1611 1612 switch (status & IWL_ADD_STA_STATUS_MASK) { 1613 case ADD_STA_SUCCESS: 1614 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1615 return 0; 1616 default: 1617 ret = -EIO; 1618 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1619 status); 1620 break; 1621 } 1622 return ret; 1623 } 1624 1625 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1626 struct ieee80211_vif *vif, 1627 struct ieee80211_sta *sta) 1628 { 1629 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1630 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1631 struct iwl_mvm_rxq_dup_data *dup_data; 1632 int i, ret, sta_id; 1633 bool sta_update = false; 1634 unsigned int sta_flags = 0; 1635 1636 lockdep_assert_held(&mvm->mutex); 1637 1638 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1639 sta_id = iwl_mvm_find_free_sta_id(mvm, 1640 ieee80211_vif_type_p2p(vif)); 1641 else 1642 sta_id = mvm_sta->sta_id; 1643 1644 if (sta_id == IWL_MVM_INVALID_STA) 1645 return -ENOSPC; 1646 1647 spin_lock_init(&mvm_sta->lock); 1648 1649 /* if this is a HW restart re-alloc existing queues */ 1650 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1651 struct iwl_mvm_int_sta tmp_sta = { 1652 .sta_id = sta_id, 1653 .type = mvm_sta->sta_type, 1654 }; 1655 1656 /* 1657 * First add an empty station since allocating 1658 * a queue requires a valid station 1659 */ 1660 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1661 mvmvif->id, mvmvif->color); 1662 if (ret) 1663 goto err; 1664 1665 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1666 sta_update = true; 1667 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1668 goto update_fw; 1669 } 1670 1671 mvm_sta->sta_id = sta_id; 1672 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1673 mvmvif->color); 1674 mvm_sta->vif = vif; 1675 if (!mvm->trans->trans_cfg->gen2) 1676 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1677 else 1678 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1679 mvm_sta->tx_protection = 0; 1680 mvm_sta->tt_tx_protection = false; 1681 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1682 1683 /* HW restart, don't assume the memory has been zeroed */ 1684 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1685 mvm_sta->tfd_queue_msk = 0; 1686 1687 /* for HW restart - reset everything but the sequence number */ 1688 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1689 u16 seq = mvm_sta->tid_data[i].seq_number; 1690 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1691 mvm_sta->tid_data[i].seq_number = seq; 1692 1693 /* 1694 * Mark all queues for this STA as unallocated and defer TX 1695 * frames until the queue is allocated 1696 */ 1697 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1698 } 1699 1700 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1701 struct iwl_mvm_txq *mvmtxq = 1702 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1703 1704 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1705 INIT_LIST_HEAD(&mvmtxq->list); 1706 atomic_set(&mvmtxq->tx_request, 0); 1707 } 1708 1709 mvm_sta->agg_tids = 0; 1710 1711 if (iwl_mvm_has_new_rx_api(mvm) && 1712 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1713 int q; 1714 1715 dup_data = kcalloc(mvm->trans->num_rx_queues, 1716 sizeof(*dup_data), GFP_KERNEL); 1717 if (!dup_data) 1718 return -ENOMEM; 1719 /* 1720 * Initialize all the last_seq values to 0xffff which can never 1721 * compare equal to the frame's seq_ctrl in the check in 1722 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1723 * number and fragmented packets don't reach that function. 1724 * 1725 * This thus allows receiving a packet with seqno 0 and the 1726 * retry bit set as the very first packet on a new TID. 1727 */ 1728 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1729 memset(dup_data[q].last_seq, 0xff, 1730 sizeof(dup_data[q].last_seq)); 1731 mvm_sta->dup_data = dup_data; 1732 } 1733 1734 if (!iwl_mvm_has_new_tx_api(mvm)) { 1735 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1736 ieee80211_vif_type_p2p(vif)); 1737 if (ret) 1738 goto err; 1739 } 1740 1741 /* 1742 * if rs is registered with mac80211, then "add station" will be handled 1743 * via the corresponding ops, otherwise need to notify rate scaling here 1744 */ 1745 if (iwl_mvm_has_tlc_offload(mvm)) 1746 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1747 else 1748 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1749 1750 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1751 1752 update_fw: 1753 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1754 if (ret) 1755 goto err; 1756 1757 if (vif->type == NL80211_IFTYPE_STATION) { 1758 if (!sta->tdls) { 1759 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1760 mvmvif->ap_sta_id = sta_id; 1761 } else { 1762 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1763 } 1764 } 1765 1766 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1767 1768 return 0; 1769 1770 err: 1771 return ret; 1772 } 1773 1774 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1775 bool drain) 1776 { 1777 struct iwl_mvm_add_sta_cmd cmd = {}; 1778 int ret; 1779 u32 status; 1780 1781 lockdep_assert_held(&mvm->mutex); 1782 1783 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1784 cmd.sta_id = mvmsta->sta_id; 1785 cmd.add_modify = STA_MODE_MODIFY; 1786 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1787 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1788 1789 status = ADD_STA_SUCCESS; 1790 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1791 iwl_mvm_add_sta_cmd_size(mvm), 1792 &cmd, &status); 1793 if (ret) 1794 return ret; 1795 1796 switch (status & IWL_ADD_STA_STATUS_MASK) { 1797 case ADD_STA_SUCCESS: 1798 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1799 mvmsta->sta_id); 1800 break; 1801 default: 1802 ret = -EIO; 1803 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1804 mvmsta->sta_id); 1805 break; 1806 } 1807 1808 return ret; 1809 } 1810 1811 /* 1812 * Remove a station from the FW table. Before sending the command to remove 1813 * the station validate that the station is indeed known to the driver (sanity 1814 * only). 1815 */ 1816 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1817 { 1818 struct ieee80211_sta *sta; 1819 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1820 .sta_id = sta_id, 1821 }; 1822 int ret; 1823 1824 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1825 lockdep_is_held(&mvm->mutex)); 1826 1827 /* Note: internal stations are marked as error values */ 1828 if (!sta) { 1829 IWL_ERR(mvm, "Invalid station id\n"); 1830 return -EINVAL; 1831 } 1832 1833 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1834 sizeof(rm_sta_cmd), &rm_sta_cmd); 1835 if (ret) { 1836 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1837 return ret; 1838 } 1839 1840 return 0; 1841 } 1842 1843 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1844 struct ieee80211_vif *vif, 1845 struct ieee80211_sta *sta) 1846 { 1847 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1848 int i; 1849 1850 lockdep_assert_held(&mvm->mutex); 1851 1852 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1853 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1854 continue; 1855 1856 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i); 1857 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1858 } 1859 1860 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1861 struct iwl_mvm_txq *mvmtxq = 1862 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1863 1864 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1865 } 1866 } 1867 1868 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1869 struct iwl_mvm_sta *mvm_sta) 1870 { 1871 int i; 1872 1873 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1874 u16 txq_id; 1875 int ret; 1876 1877 spin_lock_bh(&mvm_sta->lock); 1878 txq_id = mvm_sta->tid_data[i].txq_id; 1879 spin_unlock_bh(&mvm_sta->lock); 1880 1881 if (txq_id == IWL_MVM_INVALID_QUEUE) 1882 continue; 1883 1884 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1885 if (ret) 1886 return ret; 1887 } 1888 1889 return 0; 1890 } 1891 1892 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1893 struct ieee80211_vif *vif, 1894 struct ieee80211_sta *sta) 1895 { 1896 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1897 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1898 u8 sta_id = mvm_sta->sta_id; 1899 int ret; 1900 1901 lockdep_assert_held(&mvm->mutex); 1902 1903 if (iwl_mvm_has_new_rx_api(mvm)) 1904 kfree(mvm_sta->dup_data); 1905 1906 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1907 if (ret) 1908 return ret; 1909 1910 /* flush its queues here since we are freeing mvm_sta */ 1911 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1912 if (ret) 1913 return ret; 1914 if (iwl_mvm_has_new_tx_api(mvm)) { 1915 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1916 } else { 1917 u32 q_mask = mvm_sta->tfd_queue_msk; 1918 1919 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1920 q_mask); 1921 } 1922 if (ret) 1923 return ret; 1924 1925 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1926 1927 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1928 1929 /* If there is a TXQ still marked as reserved - free it */ 1930 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1931 u8 reserved_txq = mvm_sta->reserved_queue; 1932 enum iwl_mvm_queue_status *status; 1933 1934 /* 1935 * If no traffic has gone through the reserved TXQ - it 1936 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1937 * should be manually marked as free again 1938 */ 1939 status = &mvm->queue_info[reserved_txq].status; 1940 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1941 (*status != IWL_MVM_QUEUE_FREE), 1942 "sta_id %d reserved txq %d status %d", 1943 sta_id, reserved_txq, *status)) 1944 return -EINVAL; 1945 1946 *status = IWL_MVM_QUEUE_FREE; 1947 } 1948 1949 if (vif->type == NL80211_IFTYPE_STATION && 1950 mvmvif->ap_sta_id == sta_id) { 1951 /* if associated - we can't remove the AP STA now */ 1952 if (vif->bss_conf.assoc) 1953 return ret; 1954 1955 /* unassoc - go ahead - remove the AP STA now */ 1956 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1957 } 1958 1959 /* 1960 * This shouldn't happen - the TDLS channel switch should be canceled 1961 * before the STA is removed. 1962 */ 1963 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1964 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1965 cancel_delayed_work(&mvm->tdls_cs.dwork); 1966 } 1967 1968 /* 1969 * Make sure that the tx response code sees the station as -EBUSY and 1970 * calls the drain worker. 1971 */ 1972 spin_lock_bh(&mvm_sta->lock); 1973 spin_unlock_bh(&mvm_sta->lock); 1974 1975 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1976 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1977 1978 return ret; 1979 } 1980 1981 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1982 struct ieee80211_vif *vif, 1983 u8 sta_id) 1984 { 1985 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1986 1987 lockdep_assert_held(&mvm->mutex); 1988 1989 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1990 return ret; 1991 } 1992 1993 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1994 struct iwl_mvm_int_sta *sta, 1995 u32 qmask, enum nl80211_iftype iftype, 1996 enum iwl_sta_type type) 1997 { 1998 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1999 sta->sta_id == IWL_MVM_INVALID_STA) { 2000 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2001 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2002 return -ENOSPC; 2003 } 2004 2005 sta->tfd_queue_msk = qmask; 2006 sta->type = type; 2007 2008 /* put a non-NULL value so iterating over the stations won't stop */ 2009 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2010 return 0; 2011 } 2012 2013 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2014 { 2015 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2016 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2017 sta->sta_id = IWL_MVM_INVALID_STA; 2018 } 2019 2020 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2021 u8 sta_id, u8 fifo) 2022 { 2023 unsigned int wdg_timeout = 2024 mvm->trans->trans_cfg->base_params->wd_timeout; 2025 struct iwl_trans_txq_scd_cfg cfg = { 2026 .fifo = fifo, 2027 .sta_id = sta_id, 2028 .tid = IWL_MAX_TID_COUNT, 2029 .aggregate = false, 2030 .frame_limit = IWL_FRAME_LIMIT, 2031 }; 2032 2033 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2034 2035 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2036 } 2037 2038 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2039 { 2040 unsigned int wdg_timeout = 2041 mvm->trans->trans_cfg->base_params->wd_timeout; 2042 2043 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2044 2045 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 2046 wdg_timeout); 2047 } 2048 2049 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2050 int maccolor, u8 *addr, 2051 struct iwl_mvm_int_sta *sta, 2052 u16 *queue, int fifo) 2053 { 2054 int ret; 2055 2056 /* Map queue to fifo - needs to happen before adding station */ 2057 if (!iwl_mvm_has_new_tx_api(mvm)) 2058 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2059 2060 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2061 if (ret) { 2062 if (!iwl_mvm_has_new_tx_api(mvm)) 2063 iwl_mvm_disable_txq(mvm, NULL, queue, 2064 IWL_MAX_TID_COUNT); 2065 return ret; 2066 } 2067 2068 /* 2069 * For 22000 firmware and on we cannot add queue to a station unknown 2070 * to firmware so enable queue here - after the station was added 2071 */ 2072 if (iwl_mvm_has_new_tx_api(mvm)) { 2073 int txq; 2074 2075 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2076 if (txq < 0) { 2077 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2078 return txq; 2079 } 2080 2081 *queue = txq; 2082 } 2083 2084 return 0; 2085 } 2086 2087 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2088 { 2089 int ret; 2090 2091 lockdep_assert_held(&mvm->mutex); 2092 2093 /* Allocate aux station and assign to it the aux queue */ 2094 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2095 NL80211_IFTYPE_UNSPECIFIED, 2096 IWL_STA_AUX_ACTIVITY); 2097 if (ret) 2098 return ret; 2099 2100 /* 2101 * In CDB NICs we need to specify which lmac to use for aux activity 2102 * using the mac_id argument place to send lmac_id to the function 2103 */ 2104 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2105 &mvm->aux_sta, &mvm->aux_queue, 2106 IWL_MVM_TX_FIFO_MCAST); 2107 if (ret) { 2108 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2109 return ret; 2110 } 2111 2112 return 0; 2113 } 2114 2115 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2116 { 2117 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2118 2119 lockdep_assert_held(&mvm->mutex); 2120 2121 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2122 NULL, &mvm->snif_sta, 2123 &mvm->snif_queue, 2124 IWL_MVM_TX_FIFO_BE); 2125 } 2126 2127 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2128 { 2129 int ret; 2130 2131 lockdep_assert_held(&mvm->mutex); 2132 2133 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2134 return -EINVAL; 2135 2136 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT); 2137 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2138 if (ret) 2139 IWL_WARN(mvm, "Failed sending remove station\n"); 2140 2141 return ret; 2142 } 2143 2144 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2145 { 2146 int ret; 2147 2148 lockdep_assert_held(&mvm->mutex); 2149 2150 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2151 return -EINVAL; 2152 2153 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT); 2154 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2155 if (ret) 2156 IWL_WARN(mvm, "Failed sending remove station\n"); 2157 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2158 2159 return ret; 2160 } 2161 2162 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2163 { 2164 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2165 } 2166 2167 /* 2168 * Send the add station command for the vif's broadcast station. 2169 * Assumes that the station was already allocated. 2170 * 2171 * @mvm: the mvm component 2172 * @vif: the interface to which the broadcast station is added 2173 * @bsta: the broadcast station to add. 2174 */ 2175 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2176 { 2177 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2178 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2179 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2180 const u8 *baddr = _baddr; 2181 int queue; 2182 int ret; 2183 unsigned int wdg_timeout = 2184 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2185 struct iwl_trans_txq_scd_cfg cfg = { 2186 .fifo = IWL_MVM_TX_FIFO_VO, 2187 .sta_id = mvmvif->bcast_sta.sta_id, 2188 .tid = IWL_MAX_TID_COUNT, 2189 .aggregate = false, 2190 .frame_limit = IWL_FRAME_LIMIT, 2191 }; 2192 2193 lockdep_assert_held(&mvm->mutex); 2194 2195 if (!iwl_mvm_has_new_tx_api(mvm)) { 2196 if (vif->type == NL80211_IFTYPE_AP || 2197 vif->type == NL80211_IFTYPE_ADHOC) { 2198 queue = mvm->probe_queue; 2199 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2200 queue = mvm->p2p_dev_queue; 2201 } else { 2202 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2203 return -EINVAL; 2204 } 2205 2206 bsta->tfd_queue_msk |= BIT(queue); 2207 2208 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2209 } 2210 2211 if (vif->type == NL80211_IFTYPE_ADHOC) 2212 baddr = vif->bss_conf.bssid; 2213 2214 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2215 return -ENOSPC; 2216 2217 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2218 mvmvif->id, mvmvif->color); 2219 if (ret) 2220 return ret; 2221 2222 /* 2223 * For 22000 firmware and on we cannot add queue to a station unknown 2224 * to firmware so enable queue here - after the station was added 2225 */ 2226 if (iwl_mvm_has_new_tx_api(mvm)) { 2227 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2228 IWL_MAX_TID_COUNT, 2229 wdg_timeout); 2230 if (queue < 0) { 2231 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2232 return queue; 2233 } 2234 2235 if (vif->type == NL80211_IFTYPE_AP || 2236 vif->type == NL80211_IFTYPE_ADHOC) 2237 mvm->probe_queue = queue; 2238 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2239 mvm->p2p_dev_queue = queue; 2240 } 2241 2242 return 0; 2243 } 2244 2245 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2246 struct ieee80211_vif *vif) 2247 { 2248 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2249 u16 *queueptr, queue; 2250 2251 lockdep_assert_held(&mvm->mutex); 2252 2253 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2254 2255 switch (vif->type) { 2256 case NL80211_IFTYPE_AP: 2257 case NL80211_IFTYPE_ADHOC: 2258 queueptr = &mvm->probe_queue; 2259 break; 2260 case NL80211_IFTYPE_P2P_DEVICE: 2261 queueptr = &mvm->p2p_dev_queue; 2262 break; 2263 default: 2264 WARN(1, "Can't free bcast queue on vif type %d\n", 2265 vif->type); 2266 return; 2267 } 2268 2269 queue = *queueptr; 2270 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT); 2271 if (iwl_mvm_has_new_tx_api(mvm)) 2272 return; 2273 2274 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2275 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2276 } 2277 2278 /* Send the FW a request to remove the station from it's internal data 2279 * structures, but DO NOT remove the entry from the local data structures. */ 2280 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2281 { 2282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2283 int ret; 2284 2285 lockdep_assert_held(&mvm->mutex); 2286 2287 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2288 2289 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2290 if (ret) 2291 IWL_WARN(mvm, "Failed sending remove station\n"); 2292 return ret; 2293 } 2294 2295 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2296 { 2297 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2298 2299 lockdep_assert_held(&mvm->mutex); 2300 2301 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2302 ieee80211_vif_type_p2p(vif), 2303 IWL_STA_GENERAL_PURPOSE); 2304 } 2305 2306 /* Allocate a new station entry for the broadcast station to the given vif, 2307 * and send it to the FW. 2308 * Note that each P2P mac should have its own broadcast station. 2309 * 2310 * @mvm: the mvm component 2311 * @vif: the interface to which the broadcast station is added 2312 * @bsta: the broadcast station to add. */ 2313 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2314 { 2315 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2316 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2317 int ret; 2318 2319 lockdep_assert_held(&mvm->mutex); 2320 2321 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2322 if (ret) 2323 return ret; 2324 2325 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2326 2327 if (ret) 2328 iwl_mvm_dealloc_int_sta(mvm, bsta); 2329 2330 return ret; 2331 } 2332 2333 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2334 { 2335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2336 2337 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2338 } 2339 2340 /* 2341 * Send the FW a request to remove the station from it's internal data 2342 * structures, and in addition remove it from the local data structure. 2343 */ 2344 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2345 { 2346 int ret; 2347 2348 lockdep_assert_held(&mvm->mutex); 2349 2350 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2351 2352 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2353 2354 return ret; 2355 } 2356 2357 /* 2358 * Allocate a new station entry for the multicast station to the given vif, 2359 * and send it to the FW. 2360 * Note that each AP/GO mac should have its own multicast station. 2361 * 2362 * @mvm: the mvm component 2363 * @vif: the interface to which the multicast station is added 2364 */ 2365 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2366 { 2367 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2368 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2369 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2370 const u8 *maddr = _maddr; 2371 struct iwl_trans_txq_scd_cfg cfg = { 2372 .fifo = vif->type == NL80211_IFTYPE_AP ? 2373 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2374 .sta_id = msta->sta_id, 2375 .tid = 0, 2376 .aggregate = false, 2377 .frame_limit = IWL_FRAME_LIMIT, 2378 }; 2379 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2380 int ret; 2381 2382 lockdep_assert_held(&mvm->mutex); 2383 2384 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2385 vif->type != NL80211_IFTYPE_ADHOC)) 2386 return -ENOTSUPP; 2387 2388 /* 2389 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2390 * invalid, so make sure we use the queue we want. 2391 * Note that this is done here as we want to avoid making DQA 2392 * changes in mac80211 layer. 2393 */ 2394 if (vif->type == NL80211_IFTYPE_ADHOC) 2395 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2396 2397 /* 2398 * While in previous FWs we had to exclude cab queue from TFD queue 2399 * mask, now it is needed as any other queue. 2400 */ 2401 if (!iwl_mvm_has_new_tx_api(mvm) && 2402 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2403 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2404 timeout); 2405 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2406 } 2407 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2408 mvmvif->id, mvmvif->color); 2409 if (ret) 2410 goto err; 2411 2412 /* 2413 * Enable cab queue after the ADD_STA command is sent. 2414 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2415 * command with unknown station id, and for FW that doesn't support 2416 * station API since the cab queue is not included in the 2417 * tfd_queue_mask. 2418 */ 2419 if (iwl_mvm_has_new_tx_api(mvm)) { 2420 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2421 0, 2422 timeout); 2423 if (queue < 0) { 2424 ret = queue; 2425 goto err; 2426 } 2427 mvmvif->cab_queue = queue; 2428 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2429 IWL_UCODE_TLV_API_STA_TYPE)) 2430 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2431 timeout); 2432 2433 return 0; 2434 err: 2435 iwl_mvm_dealloc_int_sta(mvm, msta); 2436 return ret; 2437 } 2438 2439 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2440 struct ieee80211_key_conf *keyconf, 2441 bool mcast) 2442 { 2443 union { 2444 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2445 struct iwl_mvm_add_sta_key_cmd cmd; 2446 } u = {}; 2447 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2448 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2449 __le16 key_flags; 2450 int ret, size; 2451 u32 status; 2452 2453 /* This is a valid situation for GTK removal */ 2454 if (sta_id == IWL_MVM_INVALID_STA) 2455 return 0; 2456 2457 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2458 STA_KEY_FLG_KEYID_MSK); 2459 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2460 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2461 2462 if (mcast) 2463 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2464 2465 /* 2466 * The fields assigned here are in the same location at the start 2467 * of the command, so we can do this union trick. 2468 */ 2469 u.cmd.common.key_flags = key_flags; 2470 u.cmd.common.key_offset = keyconf->hw_key_idx; 2471 u.cmd.common.sta_id = sta_id; 2472 2473 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2474 2475 status = ADD_STA_SUCCESS; 2476 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2477 &status); 2478 2479 switch (status) { 2480 case ADD_STA_SUCCESS: 2481 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2482 break; 2483 default: 2484 ret = -EIO; 2485 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2486 break; 2487 } 2488 2489 return ret; 2490 } 2491 2492 /* 2493 * Send the FW a request to remove the station from it's internal data 2494 * structures, and in addition remove it from the local data structure. 2495 */ 2496 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2497 { 2498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2499 int ret; 2500 2501 lockdep_assert_held(&mvm->mutex); 2502 2503 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2504 2505 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0); 2506 2507 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2508 if (ret) 2509 IWL_WARN(mvm, "Failed sending remove station\n"); 2510 2511 return ret; 2512 } 2513 2514 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2515 { 2516 struct iwl_mvm_delba_data notif = { 2517 .baid = baid, 2518 }; 2519 2520 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2521 ¬if, sizeof(notif)); 2522 }; 2523 2524 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2525 struct iwl_mvm_baid_data *data) 2526 { 2527 int i; 2528 2529 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2530 2531 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2532 int j; 2533 struct iwl_mvm_reorder_buffer *reorder_buf = 2534 &data->reorder_buf[i]; 2535 struct iwl_mvm_reorder_buf_entry *entries = 2536 &data->entries[i * data->entries_per_queue]; 2537 2538 spin_lock_bh(&reorder_buf->lock); 2539 if (likely(!reorder_buf->num_stored)) { 2540 spin_unlock_bh(&reorder_buf->lock); 2541 continue; 2542 } 2543 2544 /* 2545 * This shouldn't happen in regular DELBA since the internal 2546 * delBA notification should trigger a release of all frames in 2547 * the reorder buffer. 2548 */ 2549 WARN_ON(1); 2550 2551 for (j = 0; j < reorder_buf->buf_size; j++) 2552 __skb_queue_purge(&entries[j].e.frames); 2553 /* 2554 * Prevent timer re-arm. This prevents a very far fetched case 2555 * where we timed out on the notification. There may be prior 2556 * RX frames pending in the RX queue before the notification 2557 * that might get processed between now and the actual deletion 2558 * and we would re-arm the timer although we are deleting the 2559 * reorder buffer. 2560 */ 2561 reorder_buf->removed = true; 2562 spin_unlock_bh(&reorder_buf->lock); 2563 del_timer_sync(&reorder_buf->reorder_timer); 2564 } 2565 } 2566 2567 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2568 struct iwl_mvm_baid_data *data, 2569 u16 ssn, u16 buf_size) 2570 { 2571 int i; 2572 2573 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2574 struct iwl_mvm_reorder_buffer *reorder_buf = 2575 &data->reorder_buf[i]; 2576 struct iwl_mvm_reorder_buf_entry *entries = 2577 &data->entries[i * data->entries_per_queue]; 2578 int j; 2579 2580 reorder_buf->num_stored = 0; 2581 reorder_buf->head_sn = ssn; 2582 reorder_buf->buf_size = buf_size; 2583 /* rx reorder timer */ 2584 timer_setup(&reorder_buf->reorder_timer, 2585 iwl_mvm_reorder_timer_expired, 0); 2586 spin_lock_init(&reorder_buf->lock); 2587 reorder_buf->mvm = mvm; 2588 reorder_buf->queue = i; 2589 reorder_buf->valid = false; 2590 for (j = 0; j < reorder_buf->buf_size; j++) 2591 __skb_queue_head_init(&entries[j].e.frames); 2592 } 2593 } 2594 2595 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2596 struct iwl_mvm_sta *mvm_sta, 2597 bool start, int tid, u16 ssn, 2598 u16 buf_size) 2599 { 2600 struct iwl_mvm_add_sta_cmd cmd = { 2601 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2602 .sta_id = mvm_sta->sta_id, 2603 .add_modify = STA_MODE_MODIFY, 2604 }; 2605 u32 status; 2606 int ret; 2607 2608 if (start) { 2609 cmd.add_immediate_ba_tid = tid; 2610 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2611 cmd.rx_ba_window = cpu_to_le16(buf_size); 2612 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2613 } else { 2614 cmd.remove_immediate_ba_tid = tid; 2615 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2616 } 2617 2618 status = ADD_STA_SUCCESS; 2619 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2620 iwl_mvm_add_sta_cmd_size(mvm), 2621 &cmd, &status); 2622 if (ret) 2623 return ret; 2624 2625 switch (status & IWL_ADD_STA_STATUS_MASK) { 2626 case ADD_STA_SUCCESS: 2627 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2628 start ? "start" : "stopp"); 2629 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2630 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2631 return -EINVAL; 2632 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2633 case ADD_STA_IMMEDIATE_BA_FAILURE: 2634 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2635 return -ENOSPC; 2636 default: 2637 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2638 start ? "start" : "stopp", status); 2639 return -EIO; 2640 } 2641 } 2642 2643 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2644 struct iwl_mvm_sta *mvm_sta, 2645 bool start, int tid, u16 ssn, 2646 u16 buf_size, int baid) 2647 { 2648 struct iwl_rx_baid_cfg_cmd cmd = { 2649 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2650 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2651 }; 2652 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2653 int ret; 2654 2655 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2656 2657 if (start) { 2658 cmd.alloc.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2659 cmd.alloc.tid = tid; 2660 cmd.alloc.ssn = cpu_to_le16(ssn); 2661 cmd.alloc.win_size = cpu_to_le16(buf_size); 2662 baid = -EIO; 2663 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2664 cmd.remove_v1.baid = cpu_to_le32(baid); 2665 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2666 } else { 2667 cmd.remove.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2668 cmd.remove.tid = cpu_to_le32(tid); 2669 } 2670 2671 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2672 &cmd, &baid); 2673 if (ret) 2674 return ret; 2675 2676 if (!start) { 2677 /* ignore firmware baid on remove */ 2678 baid = 0; 2679 } 2680 2681 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2682 start ? "start" : "stopp"); 2683 2684 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2685 return -EINVAL; 2686 2687 return baid; 2688 } 2689 2690 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta, 2691 bool start, int tid, u16 ssn, u16 buf_size, 2692 int baid) 2693 { 2694 if (fw_has_capa(&mvm->fw->ucode_capa, 2695 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2696 return iwl_mvm_fw_baid_op_cmd(mvm, mvm_sta, start, 2697 tid, ssn, buf_size, baid); 2698 2699 return iwl_mvm_fw_baid_op_sta(mvm, mvm_sta, start, 2700 tid, ssn, buf_size); 2701 } 2702 2703 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2704 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2705 { 2706 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2707 struct iwl_mvm_baid_data *baid_data = NULL; 2708 int ret, baid; 2709 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2710 IWL_MAX_BAID_OLD; 2711 2712 lockdep_assert_held(&mvm->mutex); 2713 2714 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2715 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2716 return -ENOSPC; 2717 } 2718 2719 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2720 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2721 2722 /* sparse doesn't like the __align() so don't check */ 2723 #ifndef __CHECKER__ 2724 /* 2725 * The division below will be OK if either the cache line size 2726 * can be divided by the entry size (ALIGN will round up) or if 2727 * if the entry size can be divided by the cache line size, in 2728 * which case the ALIGN() will do nothing. 2729 */ 2730 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2731 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2732 #endif 2733 2734 /* 2735 * Upward align the reorder buffer size to fill an entire cache 2736 * line for each queue, to avoid sharing cache lines between 2737 * different queues. 2738 */ 2739 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2740 2741 /* 2742 * Allocate here so if allocation fails we can bail out early 2743 * before starting the BA session in the firmware 2744 */ 2745 baid_data = kzalloc(sizeof(*baid_data) + 2746 mvm->trans->num_rx_queues * 2747 reorder_buf_size, 2748 GFP_KERNEL); 2749 if (!baid_data) 2750 return -ENOMEM; 2751 2752 /* 2753 * This division is why we need the above BUILD_BUG_ON(), 2754 * if that doesn't hold then this will not be right. 2755 */ 2756 baid_data->entries_per_queue = 2757 reorder_buf_size / sizeof(baid_data->entries[0]); 2758 } 2759 2760 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2761 baid = mvm_sta->tid_to_baid[tid]; 2762 } else { 2763 /* we don't really need it in this case */ 2764 baid = -1; 2765 } 2766 2767 /* Don't send command to remove (start=0) BAID during restart */ 2768 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2769 baid = iwl_mvm_fw_baid_op(mvm, mvm_sta, start, tid, ssn, buf_size, 2770 baid); 2771 2772 if (baid < 0) { 2773 ret = baid; 2774 goto out_free; 2775 } 2776 2777 if (start) { 2778 mvm->rx_ba_sessions++; 2779 2780 if (!iwl_mvm_has_new_rx_api(mvm)) 2781 return 0; 2782 2783 baid_data->baid = baid; 2784 baid_data->timeout = timeout; 2785 baid_data->last_rx = jiffies; 2786 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2787 timer_setup(&baid_data->session_timer, 2788 iwl_mvm_rx_agg_session_expired, 0); 2789 baid_data->mvm = mvm; 2790 baid_data->tid = tid; 2791 baid_data->sta_id = mvm_sta->sta_id; 2792 2793 mvm_sta->tid_to_baid[tid] = baid; 2794 if (timeout) 2795 mod_timer(&baid_data->session_timer, 2796 TU_TO_EXP_TIME(timeout * 2)); 2797 2798 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2799 /* 2800 * protect the BA data with RCU to cover a case where our 2801 * internal RX sync mechanism will timeout (not that it's 2802 * supposed to happen) and we will free the session data while 2803 * RX is being processed in parallel 2804 */ 2805 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2806 mvm_sta->sta_id, tid, baid); 2807 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2808 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2809 } else { 2810 baid = mvm_sta->tid_to_baid[tid]; 2811 2812 if (mvm->rx_ba_sessions > 0) 2813 /* check that restart flow didn't zero the counter */ 2814 mvm->rx_ba_sessions--; 2815 if (!iwl_mvm_has_new_rx_api(mvm)) 2816 return 0; 2817 2818 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2819 return -EINVAL; 2820 2821 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2822 if (WARN_ON(!baid_data)) 2823 return -EINVAL; 2824 2825 /* synchronize all rx queues so we can safely delete */ 2826 iwl_mvm_free_reorder(mvm, baid_data); 2827 del_timer_sync(&baid_data->session_timer); 2828 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2829 kfree_rcu(baid_data, rcu_head); 2830 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2831 2832 /* 2833 * After we've deleted it, do another queue sync 2834 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2835 * running it won't find a new session in the old 2836 * BAID. It can find the NULL pointer for the BAID, 2837 * but we must not have it find a different session. 2838 */ 2839 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2840 true, NULL, 0); 2841 } 2842 return 0; 2843 2844 out_free: 2845 kfree(baid_data); 2846 return ret; 2847 } 2848 2849 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2850 int tid, u8 queue, bool start) 2851 { 2852 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2853 struct iwl_mvm_add_sta_cmd cmd = {}; 2854 int ret; 2855 u32 status; 2856 2857 lockdep_assert_held(&mvm->mutex); 2858 2859 if (start) { 2860 mvm_sta->tfd_queue_msk |= BIT(queue); 2861 mvm_sta->tid_disable_agg &= ~BIT(tid); 2862 } else { 2863 /* In DQA-mode the queue isn't removed on agg termination */ 2864 mvm_sta->tid_disable_agg |= BIT(tid); 2865 } 2866 2867 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2868 cmd.sta_id = mvm_sta->sta_id; 2869 cmd.add_modify = STA_MODE_MODIFY; 2870 if (!iwl_mvm_has_new_tx_api(mvm)) 2871 cmd.modify_mask = STA_MODIFY_QUEUES; 2872 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2873 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2874 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2875 2876 status = ADD_STA_SUCCESS; 2877 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2878 iwl_mvm_add_sta_cmd_size(mvm), 2879 &cmd, &status); 2880 if (ret) 2881 return ret; 2882 2883 switch (status & IWL_ADD_STA_STATUS_MASK) { 2884 case ADD_STA_SUCCESS: 2885 break; 2886 default: 2887 ret = -EIO; 2888 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2889 start ? "start" : "stopp", status); 2890 break; 2891 } 2892 2893 return ret; 2894 } 2895 2896 const u8 tid_to_mac80211_ac[] = { 2897 IEEE80211_AC_BE, 2898 IEEE80211_AC_BK, 2899 IEEE80211_AC_BK, 2900 IEEE80211_AC_BE, 2901 IEEE80211_AC_VI, 2902 IEEE80211_AC_VI, 2903 IEEE80211_AC_VO, 2904 IEEE80211_AC_VO, 2905 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2906 }; 2907 2908 static const u8 tid_to_ucode_ac[] = { 2909 AC_BE, 2910 AC_BK, 2911 AC_BK, 2912 AC_BE, 2913 AC_VI, 2914 AC_VI, 2915 AC_VO, 2916 AC_VO, 2917 }; 2918 2919 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2920 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2921 { 2922 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2923 struct iwl_mvm_tid_data *tid_data; 2924 u16 normalized_ssn; 2925 u16 txq_id; 2926 int ret; 2927 2928 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2929 return -EINVAL; 2930 2931 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2932 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2933 IWL_ERR(mvm, 2934 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2935 mvmsta->tid_data[tid].state); 2936 return -ENXIO; 2937 } 2938 2939 lockdep_assert_held(&mvm->mutex); 2940 2941 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2942 iwl_mvm_has_new_tx_api(mvm)) { 2943 u8 ac = tid_to_mac80211_ac[tid]; 2944 2945 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2946 if (ret) 2947 return ret; 2948 } 2949 2950 spin_lock_bh(&mvmsta->lock); 2951 2952 /* 2953 * Note the possible cases: 2954 * 1. An enabled TXQ - TXQ needs to become agg'ed 2955 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2956 * it as reserved 2957 */ 2958 txq_id = mvmsta->tid_data[tid].txq_id; 2959 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2960 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2961 IWL_MVM_DQA_MIN_DATA_QUEUE, 2962 IWL_MVM_DQA_MAX_DATA_QUEUE); 2963 if (ret < 0) { 2964 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2965 goto out; 2966 } 2967 2968 txq_id = ret; 2969 2970 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2971 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2972 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2973 ret = -ENXIO; 2974 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2975 tid, IWL_MAX_HW_QUEUES - 1); 2976 goto out; 2977 2978 } else if (unlikely(mvm->queue_info[txq_id].status == 2979 IWL_MVM_QUEUE_SHARED)) { 2980 ret = -ENXIO; 2981 IWL_DEBUG_TX_QUEUES(mvm, 2982 "Can't start tid %d agg on shared queue!\n", 2983 tid); 2984 goto out; 2985 } 2986 2987 IWL_DEBUG_TX_QUEUES(mvm, 2988 "AGG for tid %d will be on queue #%d\n", 2989 tid, txq_id); 2990 2991 tid_data = &mvmsta->tid_data[tid]; 2992 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2993 tid_data->txq_id = txq_id; 2994 *ssn = tid_data->ssn; 2995 2996 IWL_DEBUG_TX_QUEUES(mvm, 2997 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2998 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2999 tid_data->next_reclaimed); 3000 3001 /* 3002 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3003 * to align the wrap around of ssn so we compare relevant values. 3004 */ 3005 normalized_ssn = tid_data->ssn; 3006 if (mvm->trans->trans_cfg->gen2) 3007 normalized_ssn &= 0xff; 3008 3009 if (normalized_ssn == tid_data->next_reclaimed) { 3010 tid_data->state = IWL_AGG_STARTING; 3011 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3012 } else { 3013 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3014 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3015 } 3016 3017 out: 3018 spin_unlock_bh(&mvmsta->lock); 3019 3020 return ret; 3021 } 3022 3023 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3024 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3025 bool amsdu) 3026 { 3027 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3028 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3029 unsigned int wdg_timeout = 3030 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3031 int queue, ret; 3032 bool alloc_queue = true; 3033 enum iwl_mvm_queue_status queue_status; 3034 u16 ssn; 3035 3036 struct iwl_trans_txq_scd_cfg cfg = { 3037 .sta_id = mvmsta->sta_id, 3038 .tid = tid, 3039 .frame_limit = buf_size, 3040 .aggregate = true, 3041 }; 3042 3043 /* 3044 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3045 * manager, so this function should never be called in this case. 3046 */ 3047 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3048 return -EINVAL; 3049 3050 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3051 != IWL_MAX_TID_COUNT); 3052 3053 spin_lock_bh(&mvmsta->lock); 3054 ssn = tid_data->ssn; 3055 queue = tid_data->txq_id; 3056 tid_data->state = IWL_AGG_ON; 3057 mvmsta->agg_tids |= BIT(tid); 3058 tid_data->ssn = 0xffff; 3059 tid_data->amsdu_in_ampdu_allowed = amsdu; 3060 spin_unlock_bh(&mvmsta->lock); 3061 3062 if (iwl_mvm_has_new_tx_api(mvm)) { 3063 /* 3064 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3065 * would have failed, so if we are here there is no need to 3066 * allocate a queue. 3067 * However, if aggregation size is different than the default 3068 * size, the scheduler should be reconfigured. 3069 * We cannot do this with the new TX API, so return unsupported 3070 * for now, until it will be offloaded to firmware.. 3071 * Note that if SCD default value changes - this condition 3072 * should be updated as well. 3073 */ 3074 if (buf_size < IWL_FRAME_LIMIT) 3075 return -ENOTSUPP; 3076 3077 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3078 if (ret) 3079 return -EIO; 3080 goto out; 3081 } 3082 3083 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3084 3085 queue_status = mvm->queue_info[queue].status; 3086 3087 /* Maybe there is no need to even alloc a queue... */ 3088 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3089 alloc_queue = false; 3090 3091 /* 3092 * Only reconfig the SCD for the queue if the window size has 3093 * changed from current (become smaller) 3094 */ 3095 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3096 /* 3097 * If reconfiguring an existing queue, it first must be 3098 * drained 3099 */ 3100 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3101 BIT(queue)); 3102 if (ret) { 3103 IWL_ERR(mvm, 3104 "Error draining queue before reconfig\n"); 3105 return ret; 3106 } 3107 3108 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3109 mvmsta->sta_id, tid, 3110 buf_size, ssn); 3111 if (ret) { 3112 IWL_ERR(mvm, 3113 "Error reconfiguring TXQ #%d\n", queue); 3114 return ret; 3115 } 3116 } 3117 3118 if (alloc_queue) 3119 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3120 &cfg, wdg_timeout); 3121 3122 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3123 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3124 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3125 if (ret) 3126 return -EIO; 3127 } 3128 3129 /* No need to mark as reserved */ 3130 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3131 3132 out: 3133 /* 3134 * Even though in theory the peer could have different 3135 * aggregation reorder buffer sizes for different sessions, 3136 * our ucode doesn't allow for that and has a global limit 3137 * for each station. Therefore, use the minimum of all the 3138 * aggregation sessions and our default value. 3139 */ 3140 mvmsta->max_agg_bufsize = 3141 min(mvmsta->max_agg_bufsize, buf_size); 3142 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3143 3144 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3145 sta->addr, tid); 3146 3147 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3148 } 3149 3150 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3151 struct iwl_mvm_sta *mvmsta, 3152 struct iwl_mvm_tid_data *tid_data) 3153 { 3154 u16 txq_id = tid_data->txq_id; 3155 3156 lockdep_assert_held(&mvm->mutex); 3157 3158 if (iwl_mvm_has_new_tx_api(mvm)) 3159 return; 3160 3161 /* 3162 * The TXQ is marked as reserved only if no traffic came through yet 3163 * This means no traffic has been sent on this TID (agg'd or not), so 3164 * we no longer have use for the queue. Since it hasn't even been 3165 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3166 * free. 3167 */ 3168 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3169 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3170 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3171 } 3172 } 3173 3174 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3175 struct ieee80211_sta *sta, u16 tid) 3176 { 3177 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3178 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3179 u16 txq_id; 3180 int err; 3181 3182 /* 3183 * If mac80211 is cleaning its state, then say that we finished since 3184 * our state has been cleared anyway. 3185 */ 3186 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3187 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3188 return 0; 3189 } 3190 3191 spin_lock_bh(&mvmsta->lock); 3192 3193 txq_id = tid_data->txq_id; 3194 3195 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3196 mvmsta->sta_id, tid, txq_id, tid_data->state); 3197 3198 mvmsta->agg_tids &= ~BIT(tid); 3199 3200 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3201 3202 switch (tid_data->state) { 3203 case IWL_AGG_ON: 3204 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3205 3206 IWL_DEBUG_TX_QUEUES(mvm, 3207 "ssn = %d, next_recl = %d\n", 3208 tid_data->ssn, tid_data->next_reclaimed); 3209 3210 tid_data->ssn = 0xffff; 3211 tid_data->state = IWL_AGG_OFF; 3212 spin_unlock_bh(&mvmsta->lock); 3213 3214 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3215 3216 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3217 return 0; 3218 case IWL_AGG_STARTING: 3219 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3220 /* 3221 * The agg session has been stopped before it was set up. This 3222 * can happen when the AddBA timer times out for example. 3223 */ 3224 3225 /* No barriers since we are under mutex */ 3226 lockdep_assert_held(&mvm->mutex); 3227 3228 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3229 tid_data->state = IWL_AGG_OFF; 3230 err = 0; 3231 break; 3232 default: 3233 IWL_ERR(mvm, 3234 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3235 mvmsta->sta_id, tid, tid_data->state); 3236 IWL_ERR(mvm, 3237 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3238 err = -EINVAL; 3239 } 3240 3241 spin_unlock_bh(&mvmsta->lock); 3242 3243 return err; 3244 } 3245 3246 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3247 struct ieee80211_sta *sta, u16 tid) 3248 { 3249 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3250 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3251 u16 txq_id; 3252 enum iwl_mvm_agg_state old_state; 3253 3254 /* 3255 * First set the agg state to OFF to avoid calling 3256 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3257 */ 3258 spin_lock_bh(&mvmsta->lock); 3259 txq_id = tid_data->txq_id; 3260 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3261 mvmsta->sta_id, tid, txq_id, tid_data->state); 3262 old_state = tid_data->state; 3263 tid_data->state = IWL_AGG_OFF; 3264 mvmsta->agg_tids &= ~BIT(tid); 3265 spin_unlock_bh(&mvmsta->lock); 3266 3267 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3268 3269 if (old_state >= IWL_AGG_ON) { 3270 iwl_mvm_drain_sta(mvm, mvmsta, true); 3271 3272 if (iwl_mvm_has_new_tx_api(mvm)) { 3273 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3274 BIT(tid))) 3275 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3276 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3277 } else { 3278 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3279 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3280 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3281 } 3282 3283 iwl_mvm_drain_sta(mvm, mvmsta, false); 3284 3285 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3286 } 3287 3288 return 0; 3289 } 3290 3291 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3292 { 3293 int i, max = -1, max_offs = -1; 3294 3295 lockdep_assert_held(&mvm->mutex); 3296 3297 /* Pick the unused key offset with the highest 'deleted' 3298 * counter. Every time a key is deleted, all the counters 3299 * are incremented and the one that was just deleted is 3300 * reset to zero. Thus, the highest counter is the one 3301 * that was deleted longest ago. Pick that one. 3302 */ 3303 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3304 if (test_bit(i, mvm->fw_key_table)) 3305 continue; 3306 if (mvm->fw_key_deleted[i] > max) { 3307 max = mvm->fw_key_deleted[i]; 3308 max_offs = i; 3309 } 3310 } 3311 3312 if (max_offs < 0) 3313 return STA_KEY_IDX_INVALID; 3314 3315 return max_offs; 3316 } 3317 3318 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3319 struct ieee80211_vif *vif, 3320 struct ieee80211_sta *sta) 3321 { 3322 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3323 3324 if (sta) 3325 return iwl_mvm_sta_from_mac80211(sta); 3326 3327 /* 3328 * The device expects GTKs for station interfaces to be 3329 * installed as GTKs for the AP station. If we have no 3330 * station ID, then use AP's station ID. 3331 */ 3332 if (vif->type == NL80211_IFTYPE_STATION && 3333 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3334 u8 sta_id = mvmvif->ap_sta_id; 3335 3336 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3337 lockdep_is_held(&mvm->mutex)); 3338 3339 /* 3340 * It is possible that the 'sta' parameter is NULL, 3341 * for example when a GTK is removed - the sta_id will then 3342 * be the AP ID, and no station was passed by mac80211. 3343 */ 3344 if (IS_ERR_OR_NULL(sta)) 3345 return NULL; 3346 3347 return iwl_mvm_sta_from_mac80211(sta); 3348 } 3349 3350 return NULL; 3351 } 3352 3353 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3354 { 3355 int i; 3356 3357 for (i = len - 1; i >= 0; i--) { 3358 if (pn1[i] > pn2[i]) 3359 return 1; 3360 if (pn1[i] < pn2[i]) 3361 return -1; 3362 } 3363 3364 return 0; 3365 } 3366 3367 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3368 u32 sta_id, 3369 struct ieee80211_key_conf *key, bool mcast, 3370 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3371 u8 key_offset, bool mfp) 3372 { 3373 union { 3374 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3375 struct iwl_mvm_add_sta_key_cmd cmd; 3376 } u = {}; 3377 __le16 key_flags; 3378 int ret; 3379 u32 status; 3380 u16 keyidx; 3381 u64 pn = 0; 3382 int i, size; 3383 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3384 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3385 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3386 new_api ? 2 : 1); 3387 3388 if (sta_id == IWL_MVM_INVALID_STA) 3389 return -EINVAL; 3390 3391 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3392 STA_KEY_FLG_KEYID_MSK; 3393 key_flags = cpu_to_le16(keyidx); 3394 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3395 3396 switch (key->cipher) { 3397 case WLAN_CIPHER_SUITE_TKIP: 3398 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3399 if (api_ver >= 2) { 3400 memcpy((void *)&u.cmd.tx_mic_key, 3401 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3402 IWL_MIC_KEY_SIZE); 3403 3404 memcpy((void *)&u.cmd.rx_mic_key, 3405 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3406 IWL_MIC_KEY_SIZE); 3407 pn = atomic64_read(&key->tx_pn); 3408 3409 } else { 3410 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3411 for (i = 0; i < 5; i++) 3412 u.cmd_v1.tkip_rx_ttak[i] = 3413 cpu_to_le16(tkip_p1k[i]); 3414 } 3415 memcpy(u.cmd.common.key, key->key, key->keylen); 3416 break; 3417 case WLAN_CIPHER_SUITE_CCMP: 3418 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3419 memcpy(u.cmd.common.key, key->key, key->keylen); 3420 if (api_ver >= 2) 3421 pn = atomic64_read(&key->tx_pn); 3422 break; 3423 case WLAN_CIPHER_SUITE_WEP104: 3424 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3425 fallthrough; 3426 case WLAN_CIPHER_SUITE_WEP40: 3427 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3428 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3429 break; 3430 case WLAN_CIPHER_SUITE_GCMP_256: 3431 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3432 fallthrough; 3433 case WLAN_CIPHER_SUITE_GCMP: 3434 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3435 memcpy(u.cmd.common.key, key->key, key->keylen); 3436 if (api_ver >= 2) 3437 pn = atomic64_read(&key->tx_pn); 3438 break; 3439 default: 3440 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3441 memcpy(u.cmd.common.key, key->key, key->keylen); 3442 } 3443 3444 if (mcast) 3445 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3446 if (mfp) 3447 key_flags |= cpu_to_le16(STA_KEY_MFP); 3448 3449 u.cmd.common.key_offset = key_offset; 3450 u.cmd.common.key_flags = key_flags; 3451 u.cmd.common.sta_id = sta_id; 3452 3453 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3454 i = 0; 3455 else 3456 i = -1; 3457 3458 for (; i < IEEE80211_NUM_TIDS; i++) { 3459 struct ieee80211_key_seq seq = {}; 3460 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3461 int rx_pn_len = 8; 3462 /* there's a hole at 2/3 in FW format depending on version */ 3463 int hole = api_ver >= 3 ? 0 : 2; 3464 3465 ieee80211_get_key_rx_seq(key, i, &seq); 3466 3467 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3468 rx_pn[0] = seq.tkip.iv16; 3469 rx_pn[1] = seq.tkip.iv16 >> 8; 3470 rx_pn[2 + hole] = seq.tkip.iv32; 3471 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3472 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3473 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3474 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3475 rx_pn = seq.hw.seq; 3476 rx_pn_len = seq.hw.seq_len; 3477 } else { 3478 rx_pn[0] = seq.ccmp.pn[0]; 3479 rx_pn[1] = seq.ccmp.pn[1]; 3480 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3481 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3482 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3483 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3484 } 3485 3486 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3487 rx_pn_len) > 0) 3488 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3489 rx_pn_len); 3490 } 3491 3492 if (api_ver >= 2) { 3493 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3494 size = sizeof(u.cmd); 3495 } else { 3496 size = sizeof(u.cmd_v1); 3497 } 3498 3499 status = ADD_STA_SUCCESS; 3500 if (cmd_flags & CMD_ASYNC) 3501 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3502 &u.cmd); 3503 else 3504 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3505 &u.cmd, &status); 3506 3507 switch (status) { 3508 case ADD_STA_SUCCESS: 3509 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3510 break; 3511 default: 3512 ret = -EIO; 3513 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3514 break; 3515 } 3516 3517 return ret; 3518 } 3519 3520 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3521 struct ieee80211_key_conf *keyconf, 3522 u8 sta_id, bool remove_key) 3523 { 3524 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3525 3526 /* verify the key details match the required command's expectations */ 3527 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3528 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3529 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3530 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3531 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3532 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3533 return -EINVAL; 3534 3535 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3536 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3537 return -EINVAL; 3538 3539 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3540 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3541 3542 if (remove_key) { 3543 /* This is a valid situation for IGTK */ 3544 if (sta_id == IWL_MVM_INVALID_STA) 3545 return 0; 3546 3547 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3548 } else { 3549 struct ieee80211_key_seq seq; 3550 const u8 *pn; 3551 3552 switch (keyconf->cipher) { 3553 case WLAN_CIPHER_SUITE_AES_CMAC: 3554 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3555 break; 3556 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3557 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3558 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3559 break; 3560 default: 3561 return -EINVAL; 3562 } 3563 3564 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3565 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3566 igtk_cmd.ctrl_flags |= 3567 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3568 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3569 pn = seq.aes_cmac.pn; 3570 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3571 ((u64) pn[4] << 8) | 3572 ((u64) pn[3] << 16) | 3573 ((u64) pn[2] << 24) | 3574 ((u64) pn[1] << 32) | 3575 ((u64) pn[0] << 40)); 3576 } 3577 3578 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3579 remove_key ? "removing" : "installing", 3580 keyconf->keyidx >= 6 ? "B" : "", 3581 keyconf->keyidx, igtk_cmd.sta_id); 3582 3583 if (!iwl_mvm_has_new_rx_api(mvm)) { 3584 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3585 .ctrl_flags = igtk_cmd.ctrl_flags, 3586 .key_id = igtk_cmd.key_id, 3587 .sta_id = igtk_cmd.sta_id, 3588 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3589 }; 3590 3591 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3592 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3593 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3594 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3595 } 3596 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3597 sizeof(igtk_cmd), &igtk_cmd); 3598 } 3599 3600 3601 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3602 struct ieee80211_vif *vif, 3603 struct ieee80211_sta *sta) 3604 { 3605 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3606 3607 if (sta) 3608 return sta->addr; 3609 3610 if (vif->type == NL80211_IFTYPE_STATION && 3611 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3612 u8 sta_id = mvmvif->ap_sta_id; 3613 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3614 lockdep_is_held(&mvm->mutex)); 3615 return sta->addr; 3616 } 3617 3618 3619 return NULL; 3620 } 3621 3622 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3623 struct ieee80211_vif *vif, 3624 struct ieee80211_sta *sta, 3625 struct ieee80211_key_conf *keyconf, 3626 u8 key_offset, 3627 bool mcast) 3628 { 3629 const u8 *addr; 3630 struct ieee80211_key_seq seq; 3631 u16 p1k[5]; 3632 u32 sta_id; 3633 bool mfp = false; 3634 3635 if (sta) { 3636 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3637 3638 sta_id = mvm_sta->sta_id; 3639 mfp = sta->mfp; 3640 } else if (vif->type == NL80211_IFTYPE_AP && 3641 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3642 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3643 3644 sta_id = mvmvif->mcast_sta.sta_id; 3645 } else { 3646 IWL_ERR(mvm, "Failed to find station id\n"); 3647 return -EINVAL; 3648 } 3649 3650 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3651 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3652 /* get phase 1 key from mac80211 */ 3653 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3654 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3655 3656 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3657 seq.tkip.iv32, p1k, 0, key_offset, 3658 mfp); 3659 } 3660 3661 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3662 0, NULL, 0, key_offset, mfp); 3663 } 3664 3665 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3666 struct ieee80211_vif *vif, 3667 struct ieee80211_sta *sta, 3668 struct ieee80211_key_conf *keyconf, 3669 u8 key_offset) 3670 { 3671 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3672 struct iwl_mvm_sta *mvm_sta; 3673 u8 sta_id = IWL_MVM_INVALID_STA; 3674 int ret; 3675 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3676 3677 lockdep_assert_held(&mvm->mutex); 3678 3679 if (vif->type != NL80211_IFTYPE_AP || 3680 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3681 /* Get the station id from the mvm local station table */ 3682 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3683 if (!mvm_sta) { 3684 IWL_ERR(mvm, "Failed to find station\n"); 3685 return -EINVAL; 3686 } 3687 sta_id = mvm_sta->sta_id; 3688 3689 /* 3690 * It is possible that the 'sta' parameter is NULL, and thus 3691 * there is a need to retrieve the sta from the local station 3692 * table. 3693 */ 3694 if (!sta) { 3695 sta = rcu_dereference_protected( 3696 mvm->fw_id_to_mac_id[sta_id], 3697 lockdep_is_held(&mvm->mutex)); 3698 if (IS_ERR_OR_NULL(sta)) { 3699 IWL_ERR(mvm, "Invalid station id\n"); 3700 return -EINVAL; 3701 } 3702 } 3703 3704 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3705 return -EINVAL; 3706 } else { 3707 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3708 3709 sta_id = mvmvif->mcast_sta.sta_id; 3710 } 3711 3712 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3713 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3714 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3715 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3716 goto end; 3717 } 3718 3719 /* If the key_offset is not pre-assigned, we need to find a 3720 * new offset to use. In normal cases, the offset is not 3721 * pre-assigned, but during HW_RESTART we want to reuse the 3722 * same indices, so we pass them when this function is called. 3723 * 3724 * In D3 entry, we need to hardcoded the indices (because the 3725 * firmware hardcodes the PTK offset to 0). In this case, we 3726 * need to make sure we don't overwrite the hw_key_idx in the 3727 * keyconf structure, because otherwise we cannot configure 3728 * the original ones back when resuming. 3729 */ 3730 if (key_offset == STA_KEY_IDX_INVALID) { 3731 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3732 if (key_offset == STA_KEY_IDX_INVALID) 3733 return -ENOSPC; 3734 keyconf->hw_key_idx = key_offset; 3735 } 3736 3737 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3738 if (ret) 3739 goto end; 3740 3741 /* 3742 * For WEP, the same key is used for multicast and unicast. Upload it 3743 * again, using the same key offset, and now pointing the other one 3744 * to the same key slot (offset). 3745 * If this fails, remove the original as well. 3746 */ 3747 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3748 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3749 sta) { 3750 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3751 key_offset, !mcast); 3752 if (ret) { 3753 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3754 goto end; 3755 } 3756 } 3757 3758 __set_bit(key_offset, mvm->fw_key_table); 3759 3760 end: 3761 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3762 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3763 sta ? sta->addr : zero_addr, ret); 3764 return ret; 3765 } 3766 3767 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3768 struct ieee80211_vif *vif, 3769 struct ieee80211_sta *sta, 3770 struct ieee80211_key_conf *keyconf) 3771 { 3772 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3773 struct iwl_mvm_sta *mvm_sta; 3774 u8 sta_id = IWL_MVM_INVALID_STA; 3775 int ret, i; 3776 3777 lockdep_assert_held(&mvm->mutex); 3778 3779 /* Get the station from the mvm local station table */ 3780 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3781 if (mvm_sta) 3782 sta_id = mvm_sta->sta_id; 3783 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3784 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3785 3786 3787 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3788 keyconf->keyidx, sta_id); 3789 3790 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3791 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3792 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3793 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3794 3795 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3796 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3797 keyconf->hw_key_idx); 3798 return -ENOENT; 3799 } 3800 3801 /* track which key was deleted last */ 3802 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3803 if (mvm->fw_key_deleted[i] < U8_MAX) 3804 mvm->fw_key_deleted[i]++; 3805 } 3806 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3807 3808 if (sta && !mvm_sta) { 3809 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3810 return 0; 3811 } 3812 3813 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3814 if (ret) 3815 return ret; 3816 3817 /* delete WEP key twice to get rid of (now useless) offset */ 3818 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3819 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3820 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3821 3822 return ret; 3823 } 3824 3825 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3826 struct ieee80211_vif *vif, 3827 struct ieee80211_key_conf *keyconf, 3828 struct ieee80211_sta *sta, u32 iv32, 3829 u16 *phase1key) 3830 { 3831 struct iwl_mvm_sta *mvm_sta; 3832 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3833 bool mfp = sta ? sta->mfp : false; 3834 3835 rcu_read_lock(); 3836 3837 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3838 if (WARN_ON_ONCE(!mvm_sta)) 3839 goto unlock; 3840 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3841 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3842 mfp); 3843 3844 unlock: 3845 rcu_read_unlock(); 3846 } 3847 3848 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3849 struct ieee80211_sta *sta) 3850 { 3851 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3852 struct iwl_mvm_add_sta_cmd cmd = { 3853 .add_modify = STA_MODE_MODIFY, 3854 .sta_id = mvmsta->sta_id, 3855 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3856 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3857 }; 3858 int ret; 3859 3860 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3861 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3862 if (ret) 3863 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3864 } 3865 3866 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3867 struct ieee80211_sta *sta, 3868 enum ieee80211_frame_release_type reason, 3869 u16 cnt, u16 tids, bool more_data, 3870 bool single_sta_queue) 3871 { 3872 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3873 struct iwl_mvm_add_sta_cmd cmd = { 3874 .add_modify = STA_MODE_MODIFY, 3875 .sta_id = mvmsta->sta_id, 3876 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3877 .sleep_tx_count = cpu_to_le16(cnt), 3878 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3879 }; 3880 int tid, ret; 3881 unsigned long _tids = tids; 3882 3883 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3884 * Note that this field is reserved and unused by firmware not 3885 * supporting GO uAPSD, so it's safe to always do this. 3886 */ 3887 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3888 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3889 3890 /* If we're releasing frames from aggregation or dqa queues then check 3891 * if all the queues that we're releasing frames from, combined, have: 3892 * - more frames than the service period, in which case more_data 3893 * needs to be set 3894 * - fewer than 'cnt' frames, in which case we need to adjust the 3895 * firmware command (but do that unconditionally) 3896 */ 3897 if (single_sta_queue) { 3898 int remaining = cnt; 3899 int sleep_tx_count; 3900 3901 spin_lock_bh(&mvmsta->lock); 3902 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3903 struct iwl_mvm_tid_data *tid_data; 3904 u16 n_queued; 3905 3906 tid_data = &mvmsta->tid_data[tid]; 3907 3908 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3909 if (n_queued > remaining) { 3910 more_data = true; 3911 remaining = 0; 3912 break; 3913 } 3914 remaining -= n_queued; 3915 } 3916 sleep_tx_count = cnt - remaining; 3917 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3918 mvmsta->sleep_tx_count = sleep_tx_count; 3919 spin_unlock_bh(&mvmsta->lock); 3920 3921 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3922 if (WARN_ON(cnt - remaining == 0)) { 3923 ieee80211_sta_eosp(sta); 3924 return; 3925 } 3926 } 3927 3928 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3929 if (more_data) 3930 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3931 3932 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3933 mvmsta->next_status_eosp = true; 3934 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3935 } else { 3936 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3937 } 3938 3939 /* block the Tx queues until the FW updated the sleep Tx count */ 3940 iwl_trans_block_txq_ptrs(mvm->trans, true); 3941 3942 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3943 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3944 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3945 if (ret) 3946 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3947 } 3948 3949 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3950 struct iwl_rx_cmd_buffer *rxb) 3951 { 3952 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3953 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3954 struct ieee80211_sta *sta; 3955 u32 sta_id = le32_to_cpu(notif->sta_id); 3956 3957 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3958 return; 3959 3960 rcu_read_lock(); 3961 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3962 if (!IS_ERR_OR_NULL(sta)) 3963 ieee80211_sta_eosp(sta); 3964 rcu_read_unlock(); 3965 } 3966 3967 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3968 struct iwl_mvm_sta *mvmsta, bool disable) 3969 { 3970 struct iwl_mvm_add_sta_cmd cmd = { 3971 .add_modify = STA_MODE_MODIFY, 3972 .sta_id = mvmsta->sta_id, 3973 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3974 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3975 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3976 }; 3977 int ret; 3978 3979 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3980 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3981 if (ret) 3982 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3983 } 3984 3985 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3986 struct ieee80211_sta *sta, 3987 bool disable) 3988 { 3989 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3990 3991 spin_lock_bh(&mvm_sta->lock); 3992 3993 if (mvm_sta->disable_tx == disable) { 3994 spin_unlock_bh(&mvm_sta->lock); 3995 return; 3996 } 3997 3998 mvm_sta->disable_tx = disable; 3999 4000 /* 4001 * If sta PS state is handled by mac80211, tell it to start/stop 4002 * queuing tx for this station. 4003 */ 4004 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4005 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4006 4007 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4008 4009 spin_unlock_bh(&mvm_sta->lock); 4010 } 4011 4012 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4013 struct iwl_mvm_vif *mvmvif, 4014 struct iwl_mvm_int_sta *sta, 4015 bool disable) 4016 { 4017 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4018 struct iwl_mvm_add_sta_cmd cmd = { 4019 .add_modify = STA_MODE_MODIFY, 4020 .sta_id = sta->sta_id, 4021 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4022 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4023 .mac_id_n_color = cpu_to_le32(id), 4024 }; 4025 int ret; 4026 4027 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4028 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4029 if (ret) 4030 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4031 } 4032 4033 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4034 struct iwl_mvm_vif *mvmvif, 4035 bool disable) 4036 { 4037 struct ieee80211_sta *sta; 4038 struct iwl_mvm_sta *mvm_sta; 4039 int i; 4040 4041 rcu_read_lock(); 4042 4043 /* Block/unblock all the stations of the given mvmvif */ 4044 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4045 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4046 if (IS_ERR_OR_NULL(sta)) 4047 continue; 4048 4049 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4050 if (mvm_sta->mac_id_n_color != 4051 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4052 continue; 4053 4054 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4055 } 4056 4057 rcu_read_unlock(); 4058 4059 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4060 return; 4061 4062 /* Need to block/unblock also multicast station */ 4063 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4064 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4065 &mvmvif->mcast_sta, disable); 4066 4067 /* 4068 * Only unblock the broadcast station (FW blocks it for immediate 4069 * quiet, not the driver) 4070 */ 4071 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4072 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4073 &mvmvif->bcast_sta, disable); 4074 } 4075 4076 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4077 { 4078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4079 struct iwl_mvm_sta *mvmsta; 4080 4081 rcu_read_lock(); 4082 4083 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 4084 4085 if (mvmsta) 4086 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4087 4088 rcu_read_unlock(); 4089 } 4090 4091 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4092 { 4093 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4094 4095 /* 4096 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4097 * to align the wrap around of ssn so we compare relevant values. 4098 */ 4099 if (mvm->trans->trans_cfg->gen2) 4100 sn &= 0xff; 4101 4102 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4103 } 4104 4105 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4106 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4107 u8 *key, u32 key_len) 4108 { 4109 int ret; 4110 u16 queue; 4111 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4112 struct ieee80211_key_conf *keyconf; 4113 4114 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4115 NL80211_IFTYPE_UNSPECIFIED, 4116 IWL_STA_LINK); 4117 if (ret) 4118 return ret; 4119 4120 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4121 addr, sta, &queue, 4122 IWL_MVM_TX_FIFO_BE); 4123 if (ret) 4124 goto out; 4125 4126 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4127 if (!keyconf) { 4128 ret = -ENOBUFS; 4129 goto out; 4130 } 4131 4132 keyconf->cipher = cipher; 4133 memcpy(keyconf->key, key, key_len); 4134 keyconf->keylen = key_len; 4135 4136 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4137 0, NULL, 0, 0, true); 4138 kfree(keyconf); 4139 return 0; 4140 out: 4141 iwl_mvm_dealloc_int_sta(mvm, sta); 4142 return ret; 4143 } 4144 4145 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4146 struct ieee80211_vif *vif, 4147 u32 mac_id) 4148 { 4149 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4150 .mac_id = cpu_to_le32(mac_id), 4151 }; 4152 int ret; 4153 4154 ret = iwl_mvm_send_cmd_pdu(mvm, 4155 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4156 CMD_ASYNC, 4157 sizeof(cancel_channel_switch_cmd), 4158 &cancel_channel_switch_cmd); 4159 if (ret) 4160 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4161 } 4162