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->deflink.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->deflink.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->deflink.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->deflink.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->deflink.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->deflink.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->deflink.he_6ghz_capa.capa, 151 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 152 agg_size = le16_get_bits(sta->deflink.he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 154 } else if (sta->deflink.vht_cap.vht_supported) { 155 agg_size = sta->deflink.vht_cap.cap & 156 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 157 agg_size >>= 158 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 159 } else if (sta->deflink.ht_cap.ht_supported) { 160 agg_size = sta->deflink.ht_cap.ampdu_factor; 161 } 162 163 /* D6.0 10.12.2 A-MPDU length limit rules 164 * A STA indicates the maximum length of the A-MPDU preEOF padding 165 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 166 * Exponent field in its HT Capabilities, VHT Capabilities, 167 * and HE 6 GHz Band Capabilities elements (if present) and the 168 * Maximum AMPDU Length Exponent Extension field in its HE 169 * Capabilities element 170 */ 171 if (sta->deflink.he_cap.has_he) 172 agg_size += u8_get_bits(sta->deflink.he_cap.he_cap_elem.mac_cap_info[3], 173 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 174 175 /* Limit to max A-MPDU supported by FW */ 176 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 177 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 178 STA_FLG_MAX_AGG_SIZE_SHIFT); 179 180 add_sta_cmd.station_flags |= 181 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 182 add_sta_cmd.station_flags |= 183 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 184 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 185 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 186 187 if (sta->wme) { 188 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 189 190 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 191 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 192 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 193 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 194 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 195 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 196 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 197 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 198 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 199 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 200 } 201 202 status = ADD_STA_SUCCESS; 203 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 204 iwl_mvm_add_sta_cmd_size(mvm), 205 &add_sta_cmd, &status); 206 if (ret) 207 return ret; 208 209 switch (status & IWL_ADD_STA_STATUS_MASK) { 210 case ADD_STA_SUCCESS: 211 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 212 break; 213 default: 214 ret = -EIO; 215 IWL_ERR(mvm, "ADD_STA failed\n"); 216 break; 217 } 218 219 return ret; 220 } 221 222 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 223 { 224 struct iwl_mvm_baid_data *data = 225 from_timer(data, t, session_timer); 226 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 227 struct iwl_mvm_baid_data *ba_data; 228 struct ieee80211_sta *sta; 229 struct iwl_mvm_sta *mvm_sta; 230 unsigned long timeout; 231 232 rcu_read_lock(); 233 234 ba_data = rcu_dereference(*rcu_ptr); 235 236 if (WARN_ON(!ba_data)) 237 goto unlock; 238 239 if (!ba_data->timeout) 240 goto unlock; 241 242 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 243 if (time_is_after_jiffies(timeout)) { 244 mod_timer(&ba_data->session_timer, timeout); 245 goto unlock; 246 } 247 248 /* Timer expired */ 249 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 250 251 /* 252 * sta should be valid unless the following happens: 253 * The firmware asserts which triggers a reconfig flow, but 254 * the reconfig fails before we set the pointer to sta into 255 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 256 * A-MDPU and hence the timer continues to run. Then, the 257 * timer expires and sta is NULL. 258 */ 259 if (!sta) 260 goto unlock; 261 262 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 263 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 264 sta->addr, ba_data->tid); 265 unlock: 266 rcu_read_unlock(); 267 } 268 269 /* Disable aggregations for a bitmap of TIDs for a given station */ 270 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 271 unsigned long disable_agg_tids, 272 bool remove_queue) 273 { 274 struct iwl_mvm_add_sta_cmd cmd = {}; 275 struct ieee80211_sta *sta; 276 struct iwl_mvm_sta *mvmsta; 277 u32 status; 278 u8 sta_id; 279 280 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 281 return -EINVAL; 282 283 sta_id = mvm->queue_info[queue].ra_sta_id; 284 285 rcu_read_lock(); 286 287 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 288 289 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 290 rcu_read_unlock(); 291 return -EINVAL; 292 } 293 294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 295 296 mvmsta->tid_disable_agg |= disable_agg_tids; 297 298 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 299 cmd.sta_id = mvmsta->sta_id; 300 cmd.add_modify = STA_MODE_MODIFY; 301 cmd.modify_mask = STA_MODIFY_QUEUES; 302 if (disable_agg_tids) 303 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 304 if (remove_queue) 305 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 306 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 307 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 308 309 rcu_read_unlock(); 310 311 /* Notify FW of queue removal from the STA queues */ 312 status = ADD_STA_SUCCESS; 313 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 314 iwl_mvm_add_sta_cmd_size(mvm), 315 &cmd, &status); 316 } 317 318 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 319 u16 *queueptr, u8 tid) 320 { 321 int queue = *queueptr; 322 struct iwl_scd_txq_cfg_cmd cmd = { 323 .scd_queue = queue, 324 .action = SCD_CFG_DISABLE_QUEUE, 325 }; 326 int ret; 327 328 lockdep_assert_held(&mvm->mutex); 329 330 if (iwl_mvm_has_new_tx_api(mvm)) { 331 if (mvm->sta_remove_requires_queue_remove) { 332 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 333 SCD_QUEUE_CONFIG_CMD); 334 struct iwl_scd_queue_cfg_cmd remove_cmd = { 335 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 336 .u.remove.queue = cpu_to_le32(queue), 337 }; 338 339 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 340 sizeof(remove_cmd), 341 &remove_cmd); 342 } else { 343 ret = 0; 344 } 345 346 iwl_trans_txq_free(mvm->trans, queue); 347 *queueptr = IWL_MVM_INVALID_QUEUE; 348 349 return ret; 350 } 351 352 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 353 return 0; 354 355 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 356 357 cmd.action = mvm->queue_info[queue].tid_bitmap ? 358 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 359 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 360 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 361 362 IWL_DEBUG_TX_QUEUES(mvm, 363 "Disabling TXQ #%d tids=0x%x\n", 364 queue, 365 mvm->queue_info[queue].tid_bitmap); 366 367 /* If the queue is still enabled - nothing left to do in this func */ 368 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 369 return 0; 370 371 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 372 cmd.tid = mvm->queue_info[queue].txq_tid; 373 374 /* Make sure queue info is correct even though we overwrite it */ 375 WARN(mvm->queue_info[queue].tid_bitmap, 376 "TXQ #%d info out-of-sync - tids=0x%x\n", 377 queue, mvm->queue_info[queue].tid_bitmap); 378 379 /* If we are here - the queue is freed and we can zero out these vals */ 380 mvm->queue_info[queue].tid_bitmap = 0; 381 382 if (sta) { 383 struct iwl_mvm_txq *mvmtxq = 384 iwl_mvm_txq_from_tid(sta, tid); 385 386 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 387 list_del_init(&mvmtxq->list); 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 list_del_init(&mvmtxq->list); 483 } 484 485 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 486 spin_unlock_bh(&mvmsta->lock); 487 488 rcu_read_unlock(); 489 490 /* 491 * The TX path may have been using this TXQ_ID from the tid_data, 492 * so make sure it's no longer running so that we can safely reuse 493 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 494 * above, but nothing guarantees we've stopped using them. Thus, 495 * without this, we could get to iwl_mvm_disable_txq() and remove 496 * the queue while still sending frames to it. 497 */ 498 synchronize_net(); 499 500 return disable_agg_tids; 501 } 502 503 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 504 struct ieee80211_sta *old_sta, 505 u8 new_sta_id) 506 { 507 struct iwl_mvm_sta *mvmsta; 508 u8 sta_id, tid; 509 unsigned long disable_agg_tids = 0; 510 bool same_sta; 511 u16 queue_tmp = queue; 512 int ret; 513 514 lockdep_assert_held(&mvm->mutex); 515 516 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 517 return -EINVAL; 518 519 sta_id = mvm->queue_info[queue].ra_sta_id; 520 tid = mvm->queue_info[queue].txq_tid; 521 522 same_sta = sta_id == new_sta_id; 523 524 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 525 if (WARN_ON(!mvmsta)) 526 return -EINVAL; 527 528 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 529 /* Disable the queue */ 530 if (disable_agg_tids) 531 iwl_mvm_invalidate_sta_queue(mvm, queue, 532 disable_agg_tids, false); 533 534 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid); 535 if (ret) { 536 IWL_ERR(mvm, 537 "Failed to free inactive queue %d (ret=%d)\n", 538 queue, ret); 539 540 return ret; 541 } 542 543 /* If TXQ is allocated to another STA, update removal in FW */ 544 if (!same_sta) 545 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 546 547 return 0; 548 } 549 550 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 551 unsigned long tfd_queue_mask, u8 ac) 552 { 553 int queue = 0; 554 u8 ac_to_queue[IEEE80211_NUM_ACS]; 555 int i; 556 557 /* 558 * This protects us against grabbing a queue that's being reconfigured 559 * by the inactivity checker. 560 */ 561 lockdep_assert_held(&mvm->mutex); 562 563 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 564 return -EINVAL; 565 566 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 567 568 /* See what ACs the existing queues for this STA have */ 569 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 570 /* Only DATA queues can be shared */ 571 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 572 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 573 continue; 574 575 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 576 } 577 578 /* 579 * The queue to share is chosen only from DATA queues as follows (in 580 * descending priority): 581 * 1. An AC_BE queue 582 * 2. Same AC queue 583 * 3. Highest AC queue that is lower than new AC 584 * 4. Any existing AC (there always is at least 1 DATA queue) 585 */ 586 587 /* Priority 1: An AC_BE queue */ 588 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 589 queue = ac_to_queue[IEEE80211_AC_BE]; 590 /* Priority 2: Same AC queue */ 591 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 592 queue = ac_to_queue[ac]; 593 /* Priority 3a: If new AC is VO and VI exists - use VI */ 594 else if (ac == IEEE80211_AC_VO && 595 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 596 queue = ac_to_queue[IEEE80211_AC_VI]; 597 /* Priority 3b: No BE so only AC less than the new one is BK */ 598 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 599 queue = ac_to_queue[IEEE80211_AC_BK]; 600 /* Priority 4a: No BE nor BK - use VI if exists */ 601 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 602 queue = ac_to_queue[IEEE80211_AC_VI]; 603 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 604 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 605 queue = ac_to_queue[IEEE80211_AC_VO]; 606 607 /* Make sure queue found (or not) is legal */ 608 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 609 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 610 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 611 IWL_ERR(mvm, "No DATA queues available to share\n"); 612 return -ENOSPC; 613 } 614 615 return queue; 616 } 617 618 /* Re-configure the SCD for a queue that has already been configured */ 619 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 620 int sta_id, int tid, int frame_limit, u16 ssn) 621 { 622 struct iwl_scd_txq_cfg_cmd cmd = { 623 .scd_queue = queue, 624 .action = SCD_CFG_ENABLE_QUEUE, 625 .window = frame_limit, 626 .sta_id = sta_id, 627 .ssn = cpu_to_le16(ssn), 628 .tx_fifo = fifo, 629 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 630 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 631 .tid = tid, 632 }; 633 int ret; 634 635 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 636 return -EINVAL; 637 638 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 639 "Trying to reconfig unallocated queue %d\n", queue)) 640 return -ENXIO; 641 642 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 643 644 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 645 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 646 queue, fifo, ret); 647 648 return ret; 649 } 650 651 /* 652 * If a given queue has a higher AC than the TID stream that is being compared 653 * to, the queue needs to be redirected to the lower AC. This function does that 654 * in such a case, otherwise - if no redirection required - it does nothing, 655 * unless the %force param is true. 656 */ 657 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 658 int ac, int ssn, unsigned int wdg_timeout, 659 bool force, struct iwl_mvm_txq *txq) 660 { 661 struct iwl_scd_txq_cfg_cmd cmd = { 662 .scd_queue = queue, 663 .action = SCD_CFG_DISABLE_QUEUE, 664 }; 665 bool shared_queue; 666 int ret; 667 668 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 669 return -EINVAL; 670 671 /* 672 * If the AC is lower than current one - FIFO needs to be redirected to 673 * the lowest one of the streams in the queue. Check if this is needed 674 * here. 675 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 676 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 677 * we need to check if the numerical value of X is LARGER than of Y. 678 */ 679 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 680 IWL_DEBUG_TX_QUEUES(mvm, 681 "No redirection needed on TXQ #%d\n", 682 queue); 683 return 0; 684 } 685 686 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 687 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 688 cmd.tid = mvm->queue_info[queue].txq_tid; 689 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 690 691 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 692 queue, iwl_mvm_ac_to_tx_fifo[ac]); 693 694 /* Stop the queue and wait for it to empty */ 695 txq->stopped = true; 696 697 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 698 if (ret) { 699 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 700 queue); 701 ret = -EIO; 702 goto out; 703 } 704 705 /* Before redirecting the queue we need to de-activate it */ 706 iwl_trans_txq_disable(mvm->trans, queue, false); 707 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 708 if (ret) 709 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 710 ret); 711 712 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 713 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 714 715 /* Update the TID "owner" of the queue */ 716 mvm->queue_info[queue].txq_tid = tid; 717 718 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 719 720 /* Redirect to lower AC */ 721 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 722 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 723 724 /* Update AC marking of the queue */ 725 mvm->queue_info[queue].mac80211_ac = ac; 726 727 /* 728 * Mark queue as shared in transport if shared 729 * Note this has to be done after queue enablement because enablement 730 * can also set this value, and there is no indication there to shared 731 * queues 732 */ 733 if (shared_queue) 734 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 735 736 out: 737 /* Continue using the queue */ 738 txq->stopped = false; 739 740 return ret; 741 } 742 743 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 744 u8 minq, u8 maxq) 745 { 746 int i; 747 748 lockdep_assert_held(&mvm->mutex); 749 750 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 751 "max queue %d >= num_of_queues (%d)", maxq, 752 mvm->trans->trans_cfg->base_params->num_of_queues)) 753 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 754 755 /* This should not be hit with new TX path */ 756 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 757 return -ENOSPC; 758 759 /* Start by looking for a free queue */ 760 for (i = minq; i <= maxq; i++) 761 if (mvm->queue_info[i].tid_bitmap == 0 && 762 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 763 return i; 764 765 return -ENOSPC; 766 } 767 768 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 769 u8 sta_id, u8 tid, unsigned int timeout) 770 { 771 int queue, size; 772 773 if (tid == IWL_MAX_TID_COUNT) { 774 tid = IWL_MGMT_TID; 775 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 776 mvm->trans->cfg->min_txq_size); 777 } else { 778 struct ieee80211_sta *sta; 779 780 rcu_read_lock(); 781 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 782 783 /* this queue isn't used for traffic (cab_queue) */ 784 if (IS_ERR_OR_NULL(sta)) { 785 size = IWL_MGMT_QUEUE_SIZE; 786 } else if (sta->deflink.he_cap.has_he) { 787 /* support for 256 ba size */ 788 size = IWL_DEFAULT_QUEUE_SIZE_HE; 789 } else { 790 size = IWL_DEFAULT_QUEUE_SIZE; 791 } 792 793 rcu_read_unlock(); 794 } 795 796 /* take the min with bc tbl entries allowed */ 797 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 798 799 /* size needs to be power of 2 values for calculating read/write pointers */ 800 size = rounddown_pow_of_two(size); 801 802 do { 803 queue = iwl_trans_txq_alloc(mvm->trans, 0, BIT(sta_id), 804 tid, size, timeout); 805 806 if (queue < 0) 807 IWL_DEBUG_TX_QUEUES(mvm, 808 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 809 size, sta_id, tid, queue); 810 size /= 2; 811 } while (queue < 0 && size >= 16); 812 813 if (queue < 0) 814 return queue; 815 816 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 817 queue, sta_id, tid); 818 819 return queue; 820 } 821 822 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 823 struct ieee80211_sta *sta, u8 ac, 824 int tid) 825 { 826 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 827 struct iwl_mvm_txq *mvmtxq = 828 iwl_mvm_txq_from_tid(sta, tid); 829 unsigned int wdg_timeout = 830 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 831 int queue = -1; 832 833 lockdep_assert_held(&mvm->mutex); 834 835 IWL_DEBUG_TX_QUEUES(mvm, 836 "Allocating queue for sta %d on tid %d\n", 837 mvmsta->sta_id, tid); 838 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 839 if (queue < 0) 840 return queue; 841 842 mvmtxq->txq_id = queue; 843 mvm->tvqm_info[queue].txq_tid = tid; 844 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 845 846 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 847 848 spin_lock_bh(&mvmsta->lock); 849 mvmsta->tid_data[tid].txq_id = queue; 850 spin_unlock_bh(&mvmsta->lock); 851 852 return 0; 853 } 854 855 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 856 struct ieee80211_sta *sta, 857 int queue, u8 sta_id, u8 tid) 858 { 859 bool enable_queue = true; 860 861 /* Make sure this TID isn't already enabled */ 862 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 863 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 864 queue, tid); 865 return false; 866 } 867 868 /* Update mappings and refcounts */ 869 if (mvm->queue_info[queue].tid_bitmap) 870 enable_queue = false; 871 872 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 873 mvm->queue_info[queue].ra_sta_id = sta_id; 874 875 if (enable_queue) { 876 if (tid != IWL_MAX_TID_COUNT) 877 mvm->queue_info[queue].mac80211_ac = 878 tid_to_mac80211_ac[tid]; 879 else 880 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 881 882 mvm->queue_info[queue].txq_tid = tid; 883 } 884 885 if (sta) { 886 struct iwl_mvm_txq *mvmtxq = 887 iwl_mvm_txq_from_tid(sta, tid); 888 889 mvmtxq->txq_id = queue; 890 } 891 892 IWL_DEBUG_TX_QUEUES(mvm, 893 "Enabling TXQ #%d tids=0x%x\n", 894 queue, mvm->queue_info[queue].tid_bitmap); 895 896 return enable_queue; 897 } 898 899 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 900 int queue, u16 ssn, 901 const struct iwl_trans_txq_scd_cfg *cfg, 902 unsigned int wdg_timeout) 903 { 904 struct iwl_scd_txq_cfg_cmd cmd = { 905 .scd_queue = queue, 906 .action = SCD_CFG_ENABLE_QUEUE, 907 .window = cfg->frame_limit, 908 .sta_id = cfg->sta_id, 909 .ssn = cpu_to_le16(ssn), 910 .tx_fifo = cfg->fifo, 911 .aggregate = cfg->aggregate, 912 .tid = cfg->tid, 913 }; 914 bool inc_ssn; 915 916 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 917 return false; 918 919 /* Send the enabling command if we need to */ 920 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 921 return false; 922 923 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 924 NULL, wdg_timeout); 925 if (inc_ssn) 926 le16_add_cpu(&cmd.ssn, 1); 927 928 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 929 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 930 931 return inc_ssn; 932 } 933 934 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 935 { 936 struct iwl_scd_txq_cfg_cmd cmd = { 937 .scd_queue = queue, 938 .action = SCD_CFG_UPDATE_QUEUE_TID, 939 }; 940 int tid; 941 unsigned long tid_bitmap; 942 int ret; 943 944 lockdep_assert_held(&mvm->mutex); 945 946 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 947 return; 948 949 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 950 951 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 952 return; 953 954 /* Find any TID for queue */ 955 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 956 cmd.tid = tid; 957 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 958 959 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 960 if (ret) { 961 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 962 queue, ret); 963 return; 964 } 965 966 mvm->queue_info[queue].txq_tid = tid; 967 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 968 queue, tid); 969 } 970 971 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 972 { 973 struct ieee80211_sta *sta; 974 struct iwl_mvm_sta *mvmsta; 975 u8 sta_id; 976 int tid = -1; 977 unsigned long tid_bitmap; 978 unsigned int wdg_timeout; 979 int ssn; 980 int ret = true; 981 982 /* queue sharing is disabled on new TX path */ 983 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 984 return; 985 986 lockdep_assert_held(&mvm->mutex); 987 988 sta_id = mvm->queue_info[queue].ra_sta_id; 989 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 990 991 /* Find TID for queue, and make sure it is the only one on the queue */ 992 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 993 if (tid_bitmap != BIT(tid)) { 994 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 995 queue, tid_bitmap); 996 return; 997 } 998 999 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1000 tid); 1001 1002 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1003 lockdep_is_held(&mvm->mutex)); 1004 1005 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1006 return; 1007 1008 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1009 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1010 1011 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1012 1013 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1014 tid_to_mac80211_ac[tid], ssn, 1015 wdg_timeout, true, 1016 iwl_mvm_txq_from_tid(sta, tid)); 1017 if (ret) { 1018 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1019 return; 1020 } 1021 1022 /* If aggs should be turned back on - do it */ 1023 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1024 struct iwl_mvm_add_sta_cmd cmd = {0}; 1025 1026 mvmsta->tid_disable_agg &= ~BIT(tid); 1027 1028 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1029 cmd.sta_id = mvmsta->sta_id; 1030 cmd.add_modify = STA_MODE_MODIFY; 1031 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1032 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1033 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1034 1035 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1036 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1037 if (!ret) { 1038 IWL_DEBUG_TX_QUEUES(mvm, 1039 "TXQ #%d is now aggregated again\n", 1040 queue); 1041 1042 /* Mark queue intenally as aggregating again */ 1043 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1044 } 1045 } 1046 1047 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1048 } 1049 1050 /* 1051 * Remove inactive TIDs of a given queue. 1052 * If all queue TIDs are inactive - mark the queue as inactive 1053 * If only some the queue TIDs are inactive - unmap them from the queue 1054 * 1055 * Returns %true if all TIDs were removed and the queue could be reused. 1056 */ 1057 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1058 struct iwl_mvm_sta *mvmsta, int queue, 1059 unsigned long tid_bitmap, 1060 unsigned long *unshare_queues, 1061 unsigned long *changetid_queues) 1062 { 1063 unsigned int tid; 1064 1065 lockdep_assert_held(&mvmsta->lock); 1066 lockdep_assert_held(&mvm->mutex); 1067 1068 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1069 return false; 1070 1071 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1072 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1073 /* If some TFDs are still queued - don't mark TID as inactive */ 1074 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1075 tid_bitmap &= ~BIT(tid); 1076 1077 /* Don't mark as inactive any TID that has an active BA */ 1078 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1079 tid_bitmap &= ~BIT(tid); 1080 } 1081 1082 /* If all TIDs in the queue are inactive - return it can be reused */ 1083 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1084 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1085 return true; 1086 } 1087 1088 /* 1089 * If we are here, this is a shared queue and not all TIDs timed-out. 1090 * Remove the ones that did. 1091 */ 1092 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1093 u16 q_tid_bitmap; 1094 1095 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1096 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1097 1098 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1099 1100 /* 1101 * We need to take into account a situation in which a TXQ was 1102 * allocated to TID x, and then turned shared by adding TIDs y 1103 * and z. If TID x becomes inactive and is removed from the TXQ, 1104 * ownership must be given to one of the remaining TIDs. 1105 * This is mainly because if TID x continues - a new queue can't 1106 * be allocated for it as long as it is an owner of another TXQ. 1107 * 1108 * Mark this queue in the right bitmap, we'll send the command 1109 * to the firmware later. 1110 */ 1111 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1112 set_bit(queue, changetid_queues); 1113 1114 IWL_DEBUG_TX_QUEUES(mvm, 1115 "Removing inactive TID %d from shared Q:%d\n", 1116 tid, queue); 1117 } 1118 1119 IWL_DEBUG_TX_QUEUES(mvm, 1120 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1121 mvm->queue_info[queue].tid_bitmap); 1122 1123 /* 1124 * There may be different TIDs with the same mac queues, so make 1125 * sure all TIDs have existing corresponding mac queues enabled 1126 */ 1127 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1128 1129 /* If the queue is marked as shared - "unshare" it */ 1130 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1131 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1132 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1133 queue); 1134 set_bit(queue, unshare_queues); 1135 } 1136 1137 return false; 1138 } 1139 1140 /* 1141 * Check for inactivity - this includes checking if any queue 1142 * can be unshared and finding one (and only one) that can be 1143 * reused. 1144 * This function is also invoked as a sort of clean-up task, 1145 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1146 * 1147 * Returns the queue number, or -ENOSPC. 1148 */ 1149 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1150 { 1151 unsigned long now = jiffies; 1152 unsigned long unshare_queues = 0; 1153 unsigned long changetid_queues = 0; 1154 int i, ret, free_queue = -ENOSPC; 1155 struct ieee80211_sta *queue_owner = NULL; 1156 1157 lockdep_assert_held(&mvm->mutex); 1158 1159 if (iwl_mvm_has_new_tx_api(mvm)) 1160 return -ENOSPC; 1161 1162 rcu_read_lock(); 1163 1164 /* we skip the CMD queue below by starting at 1 */ 1165 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1166 1167 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1168 struct ieee80211_sta *sta; 1169 struct iwl_mvm_sta *mvmsta; 1170 u8 sta_id; 1171 int tid; 1172 unsigned long inactive_tid_bitmap = 0; 1173 unsigned long queue_tid_bitmap; 1174 1175 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1176 if (!queue_tid_bitmap) 1177 continue; 1178 1179 /* If TXQ isn't in active use anyway - nothing to do here... */ 1180 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1181 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1182 continue; 1183 1184 /* Check to see if there are inactive TIDs on this queue */ 1185 for_each_set_bit(tid, &queue_tid_bitmap, 1186 IWL_MAX_TID_COUNT + 1) { 1187 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1188 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1189 continue; 1190 1191 inactive_tid_bitmap |= BIT(tid); 1192 } 1193 1194 /* If all TIDs are active - finish check on this queue */ 1195 if (!inactive_tid_bitmap) 1196 continue; 1197 1198 /* 1199 * If we are here - the queue hadn't been served recently and is 1200 * in use 1201 */ 1202 1203 sta_id = mvm->queue_info[i].ra_sta_id; 1204 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1205 1206 /* 1207 * If the STA doesn't exist anymore, it isn't an error. It could 1208 * be that it was removed since getting the queues, and in this 1209 * case it should've inactivated its queues anyway. 1210 */ 1211 if (IS_ERR_OR_NULL(sta)) 1212 continue; 1213 1214 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1215 1216 spin_lock_bh(&mvmsta->lock); 1217 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1218 inactive_tid_bitmap, 1219 &unshare_queues, 1220 &changetid_queues); 1221 if (ret && free_queue < 0) { 1222 queue_owner = sta; 1223 free_queue = i; 1224 } 1225 /* only unlock sta lock - we still need the queue info lock */ 1226 spin_unlock_bh(&mvmsta->lock); 1227 } 1228 1229 1230 /* Reconfigure queues requiring reconfiguation */ 1231 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1232 iwl_mvm_unshare_queue(mvm, i); 1233 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1234 iwl_mvm_change_queue_tid(mvm, i); 1235 1236 rcu_read_unlock(); 1237 1238 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1239 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1240 alloc_for_sta); 1241 if (ret) 1242 return ret; 1243 } 1244 1245 return free_queue; 1246 } 1247 1248 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1249 struct ieee80211_sta *sta, u8 ac, int tid) 1250 { 1251 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1252 struct iwl_trans_txq_scd_cfg cfg = { 1253 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1254 .sta_id = mvmsta->sta_id, 1255 .tid = tid, 1256 .frame_limit = IWL_FRAME_LIMIT, 1257 }; 1258 unsigned int wdg_timeout = 1259 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1260 int queue = -1; 1261 u16 queue_tmp; 1262 unsigned long disable_agg_tids = 0; 1263 enum iwl_mvm_agg_state queue_state; 1264 bool shared_queue = false, inc_ssn; 1265 int ssn; 1266 unsigned long tfd_queue_mask; 1267 int ret; 1268 1269 lockdep_assert_held(&mvm->mutex); 1270 1271 if (iwl_mvm_has_new_tx_api(mvm)) 1272 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1273 1274 spin_lock_bh(&mvmsta->lock); 1275 tfd_queue_mask = mvmsta->tfd_queue_msk; 1276 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1277 spin_unlock_bh(&mvmsta->lock); 1278 1279 if (tid == IWL_MAX_TID_COUNT) { 1280 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1281 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1282 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1283 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1284 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1285 queue); 1286 1287 /* If no such queue is found, we'll use a DATA queue instead */ 1288 } 1289 1290 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1291 (mvm->queue_info[mvmsta->reserved_queue].status == 1292 IWL_MVM_QUEUE_RESERVED)) { 1293 queue = mvmsta->reserved_queue; 1294 mvm->queue_info[queue].reserved = true; 1295 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1296 } 1297 1298 if (queue < 0) 1299 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1300 IWL_MVM_DQA_MIN_DATA_QUEUE, 1301 IWL_MVM_DQA_MAX_DATA_QUEUE); 1302 if (queue < 0) { 1303 /* try harder - perhaps kill an inactive queue */ 1304 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1305 } 1306 1307 /* No free queue - we'll have to share */ 1308 if (queue <= 0) { 1309 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1310 if (queue > 0) { 1311 shared_queue = true; 1312 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1313 } 1314 } 1315 1316 /* 1317 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1318 * to make sure no one else takes it. 1319 * This will allow avoiding re-acquiring the lock at the end of the 1320 * configuration. On error we'll mark it back as free. 1321 */ 1322 if (queue > 0 && !shared_queue) 1323 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1324 1325 /* This shouldn't happen - out of queues */ 1326 if (WARN_ON(queue <= 0)) { 1327 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1328 tid, cfg.sta_id); 1329 return queue; 1330 } 1331 1332 /* 1333 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1334 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1335 * as aggregatable. 1336 * Mark all DATA queues as allowing to be aggregated at some point 1337 */ 1338 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1339 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1340 1341 IWL_DEBUG_TX_QUEUES(mvm, 1342 "Allocating %squeue #%d to sta %d on tid %d\n", 1343 shared_queue ? "shared " : "", queue, 1344 mvmsta->sta_id, tid); 1345 1346 if (shared_queue) { 1347 /* Disable any open aggs on this queue */ 1348 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1349 1350 if (disable_agg_tids) { 1351 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1352 queue); 1353 iwl_mvm_invalidate_sta_queue(mvm, queue, 1354 disable_agg_tids, false); 1355 } 1356 } 1357 1358 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1359 1360 /* 1361 * Mark queue as shared in transport if shared 1362 * Note this has to be done after queue enablement because enablement 1363 * can also set this value, and there is no indication there to shared 1364 * queues 1365 */ 1366 if (shared_queue) 1367 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1368 1369 spin_lock_bh(&mvmsta->lock); 1370 /* 1371 * This looks racy, but it is not. We have only one packet for 1372 * this ra/tid in our Tx path since we stop the Qdisc when we 1373 * need to allocate a new TFD queue. 1374 */ 1375 if (inc_ssn) { 1376 mvmsta->tid_data[tid].seq_number += 0x10; 1377 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1378 } 1379 mvmsta->tid_data[tid].txq_id = queue; 1380 mvmsta->tfd_queue_msk |= BIT(queue); 1381 queue_state = mvmsta->tid_data[tid].state; 1382 1383 if (mvmsta->reserved_queue == queue) 1384 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1385 spin_unlock_bh(&mvmsta->lock); 1386 1387 if (!shared_queue) { 1388 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1389 if (ret) 1390 goto out_err; 1391 1392 /* If we need to re-enable aggregations... */ 1393 if (queue_state == IWL_AGG_ON) { 1394 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1395 if (ret) 1396 goto out_err; 1397 } 1398 } else { 1399 /* Redirect queue, if needed */ 1400 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1401 wdg_timeout, false, 1402 iwl_mvm_txq_from_tid(sta, tid)); 1403 if (ret) 1404 goto out_err; 1405 } 1406 1407 return 0; 1408 1409 out_err: 1410 queue_tmp = queue; 1411 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid); 1412 1413 return ret; 1414 } 1415 1416 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1417 { 1418 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1419 add_stream_wk); 1420 1421 mutex_lock(&mvm->mutex); 1422 1423 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1424 1425 while (!list_empty(&mvm->add_stream_txqs)) { 1426 struct iwl_mvm_txq *mvmtxq; 1427 struct ieee80211_txq *txq; 1428 u8 tid; 1429 1430 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1431 struct iwl_mvm_txq, list); 1432 1433 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1434 drv_priv); 1435 tid = txq->tid; 1436 if (tid == IEEE80211_NUM_TIDS) 1437 tid = IWL_MAX_TID_COUNT; 1438 1439 /* 1440 * We can't really do much here, but if this fails we can't 1441 * transmit anyway - so just don't transmit the frame etc. 1442 * and let them back up ... we've tried our best to allocate 1443 * a queue in the function itself. 1444 */ 1445 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1446 list_del_init(&mvmtxq->list); 1447 continue; 1448 } 1449 1450 list_del_init(&mvmtxq->list); 1451 local_bh_disable(); 1452 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1453 local_bh_enable(); 1454 } 1455 1456 mutex_unlock(&mvm->mutex); 1457 } 1458 1459 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1460 struct ieee80211_sta *sta, 1461 enum nl80211_iftype vif_type) 1462 { 1463 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1464 int queue; 1465 1466 /* queue reserving is disabled on new TX path */ 1467 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1468 return 0; 1469 1470 /* run the general cleanup/unsharing of queues */ 1471 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1472 1473 /* Make sure we have free resources for this STA */ 1474 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1475 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1476 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1477 IWL_MVM_QUEUE_FREE)) 1478 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1479 else 1480 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1481 IWL_MVM_DQA_MIN_DATA_QUEUE, 1482 IWL_MVM_DQA_MAX_DATA_QUEUE); 1483 if (queue < 0) { 1484 /* try again - this time kick out a queue if needed */ 1485 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1486 if (queue < 0) { 1487 IWL_ERR(mvm, "No available queues for new station\n"); 1488 return -ENOSPC; 1489 } 1490 } 1491 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1492 1493 mvmsta->reserved_queue = queue; 1494 1495 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1496 queue, mvmsta->sta_id); 1497 1498 return 0; 1499 } 1500 1501 /* 1502 * In DQA mode, after a HW restart the queues should be allocated as before, in 1503 * order to avoid race conditions when there are shared queues. This function 1504 * does the re-mapping and queue allocation. 1505 * 1506 * Note that re-enabling aggregations isn't done in this function. 1507 */ 1508 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1509 struct ieee80211_sta *sta) 1510 { 1511 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1512 unsigned int wdg = 1513 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1514 int i; 1515 struct iwl_trans_txq_scd_cfg cfg = { 1516 .sta_id = mvm_sta->sta_id, 1517 .frame_limit = IWL_FRAME_LIMIT, 1518 }; 1519 1520 /* Make sure reserved queue is still marked as such (if allocated) */ 1521 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1522 mvm->queue_info[mvm_sta->reserved_queue].status = 1523 IWL_MVM_QUEUE_RESERVED; 1524 1525 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1526 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1527 int txq_id = tid_data->txq_id; 1528 int ac; 1529 1530 if (txq_id == IWL_MVM_INVALID_QUEUE) 1531 continue; 1532 1533 ac = tid_to_mac80211_ac[i]; 1534 1535 if (iwl_mvm_has_new_tx_api(mvm)) { 1536 IWL_DEBUG_TX_QUEUES(mvm, 1537 "Re-mapping sta %d tid %d\n", 1538 mvm_sta->sta_id, i); 1539 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1540 i, wdg); 1541 /* 1542 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1543 * to try again later, we have no other good way of 1544 * failing here 1545 */ 1546 if (txq_id < 0) 1547 txq_id = IWL_MVM_INVALID_QUEUE; 1548 tid_data->txq_id = txq_id; 1549 1550 /* 1551 * Since we don't set the seq number after reset, and HW 1552 * sets it now, FW reset will cause the seq num to start 1553 * at 0 again, so driver will need to update it 1554 * internally as well, so it keeps in sync with real val 1555 */ 1556 tid_data->seq_number = 0; 1557 } else { 1558 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1559 1560 cfg.tid = i; 1561 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1562 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1563 txq_id == 1564 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1565 1566 IWL_DEBUG_TX_QUEUES(mvm, 1567 "Re-mapping sta %d tid %d to queue %d\n", 1568 mvm_sta->sta_id, i, txq_id); 1569 1570 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1571 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1572 } 1573 } 1574 } 1575 1576 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1577 struct iwl_mvm_int_sta *sta, 1578 const u8 *addr, 1579 u16 mac_id, u16 color) 1580 { 1581 struct iwl_mvm_add_sta_cmd cmd; 1582 int ret; 1583 u32 status = ADD_STA_SUCCESS; 1584 1585 lockdep_assert_held(&mvm->mutex); 1586 1587 memset(&cmd, 0, sizeof(cmd)); 1588 cmd.sta_id = sta->sta_id; 1589 1590 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1591 sta->type == IWL_STA_AUX_ACTIVITY) 1592 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1593 else 1594 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1595 color)); 1596 1597 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1598 cmd.station_type = sta->type; 1599 1600 if (!iwl_mvm_has_new_tx_api(mvm)) 1601 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1602 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1603 1604 if (addr) 1605 memcpy(cmd.addr, addr, ETH_ALEN); 1606 1607 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1608 iwl_mvm_add_sta_cmd_size(mvm), 1609 &cmd, &status); 1610 if (ret) 1611 return ret; 1612 1613 switch (status & IWL_ADD_STA_STATUS_MASK) { 1614 case ADD_STA_SUCCESS: 1615 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1616 return 0; 1617 default: 1618 ret = -EIO; 1619 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1620 status); 1621 break; 1622 } 1623 return ret; 1624 } 1625 1626 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1627 struct ieee80211_vif *vif, 1628 struct ieee80211_sta *sta) 1629 { 1630 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1631 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1632 struct iwl_mvm_rxq_dup_data *dup_data; 1633 int i, ret, sta_id; 1634 bool sta_update = false; 1635 unsigned int sta_flags = 0; 1636 1637 lockdep_assert_held(&mvm->mutex); 1638 1639 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1640 sta_id = iwl_mvm_find_free_sta_id(mvm, 1641 ieee80211_vif_type_p2p(vif)); 1642 else 1643 sta_id = mvm_sta->sta_id; 1644 1645 if (sta_id == IWL_MVM_INVALID_STA) 1646 return -ENOSPC; 1647 1648 spin_lock_init(&mvm_sta->lock); 1649 1650 /* if this is a HW restart re-alloc existing queues */ 1651 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1652 struct iwl_mvm_int_sta tmp_sta = { 1653 .sta_id = sta_id, 1654 .type = mvm_sta->sta_type, 1655 }; 1656 1657 /* 1658 * First add an empty station since allocating 1659 * a queue requires a valid station 1660 */ 1661 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1662 mvmvif->id, mvmvif->color); 1663 if (ret) 1664 goto err; 1665 1666 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1667 sta_update = true; 1668 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1669 goto update_fw; 1670 } 1671 1672 mvm_sta->sta_id = sta_id; 1673 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1674 mvmvif->color); 1675 mvm_sta->vif = vif; 1676 if (!mvm->trans->trans_cfg->gen2) 1677 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1678 else 1679 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1680 mvm_sta->tx_protection = 0; 1681 mvm_sta->tt_tx_protection = false; 1682 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1683 1684 /* HW restart, don't assume the memory has been zeroed */ 1685 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1686 mvm_sta->tfd_queue_msk = 0; 1687 1688 /* for HW restart - reset everything but the sequence number */ 1689 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1690 u16 seq = mvm_sta->tid_data[i].seq_number; 1691 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1692 mvm_sta->tid_data[i].seq_number = seq; 1693 1694 /* 1695 * Mark all queues for this STA as unallocated and defer TX 1696 * frames until the queue is allocated 1697 */ 1698 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1699 } 1700 1701 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1702 struct iwl_mvm_txq *mvmtxq = 1703 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1704 1705 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1706 INIT_LIST_HEAD(&mvmtxq->list); 1707 atomic_set(&mvmtxq->tx_request, 0); 1708 } 1709 1710 mvm_sta->agg_tids = 0; 1711 1712 if (iwl_mvm_has_new_rx_api(mvm) && 1713 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1714 int q; 1715 1716 dup_data = kcalloc(mvm->trans->num_rx_queues, 1717 sizeof(*dup_data), GFP_KERNEL); 1718 if (!dup_data) 1719 return -ENOMEM; 1720 /* 1721 * Initialize all the last_seq values to 0xffff which can never 1722 * compare equal to the frame's seq_ctrl in the check in 1723 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1724 * number and fragmented packets don't reach that function. 1725 * 1726 * This thus allows receiving a packet with seqno 0 and the 1727 * retry bit set as the very first packet on a new TID. 1728 */ 1729 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1730 memset(dup_data[q].last_seq, 0xff, 1731 sizeof(dup_data[q].last_seq)); 1732 mvm_sta->dup_data = dup_data; 1733 } 1734 1735 if (!iwl_mvm_has_new_tx_api(mvm)) { 1736 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1737 ieee80211_vif_type_p2p(vif)); 1738 if (ret) 1739 goto err; 1740 } 1741 1742 /* 1743 * if rs is registered with mac80211, then "add station" will be handled 1744 * via the corresponding ops, otherwise need to notify rate scaling here 1745 */ 1746 if (iwl_mvm_has_tlc_offload(mvm)) 1747 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1748 else 1749 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1750 1751 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1752 1753 update_fw: 1754 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1755 if (ret) 1756 goto err; 1757 1758 if (vif->type == NL80211_IFTYPE_STATION) { 1759 if (!sta->tdls) { 1760 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1761 mvmvif->ap_sta_id = sta_id; 1762 } else { 1763 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1764 } 1765 } 1766 1767 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1768 1769 return 0; 1770 1771 err: 1772 return ret; 1773 } 1774 1775 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1776 bool drain) 1777 { 1778 struct iwl_mvm_add_sta_cmd cmd = {}; 1779 int ret; 1780 u32 status; 1781 1782 lockdep_assert_held(&mvm->mutex); 1783 1784 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1785 cmd.sta_id = mvmsta->sta_id; 1786 cmd.add_modify = STA_MODE_MODIFY; 1787 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1788 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1789 1790 status = ADD_STA_SUCCESS; 1791 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1792 iwl_mvm_add_sta_cmd_size(mvm), 1793 &cmd, &status); 1794 if (ret) 1795 return ret; 1796 1797 switch (status & IWL_ADD_STA_STATUS_MASK) { 1798 case ADD_STA_SUCCESS: 1799 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1800 mvmsta->sta_id); 1801 break; 1802 default: 1803 ret = -EIO; 1804 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1805 mvmsta->sta_id); 1806 break; 1807 } 1808 1809 return ret; 1810 } 1811 1812 /* 1813 * Remove a station from the FW table. Before sending the command to remove 1814 * the station validate that the station is indeed known to the driver (sanity 1815 * only). 1816 */ 1817 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1818 { 1819 struct ieee80211_sta *sta; 1820 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1821 .sta_id = sta_id, 1822 }; 1823 int ret; 1824 1825 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1826 lockdep_is_held(&mvm->mutex)); 1827 1828 /* Note: internal stations are marked as error values */ 1829 if (!sta) { 1830 IWL_ERR(mvm, "Invalid station id\n"); 1831 return -EINVAL; 1832 } 1833 1834 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1835 sizeof(rm_sta_cmd), &rm_sta_cmd); 1836 if (ret) { 1837 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1838 return ret; 1839 } 1840 1841 return 0; 1842 } 1843 1844 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1845 struct ieee80211_vif *vif, 1846 struct ieee80211_sta *sta) 1847 { 1848 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1849 int i; 1850 1851 lockdep_assert_held(&mvm->mutex); 1852 1853 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1854 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1855 continue; 1856 1857 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i); 1858 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1859 } 1860 1861 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1862 struct iwl_mvm_txq *mvmtxq = 1863 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1864 1865 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1866 list_del_init(&mvmtxq->list); 1867 } 1868 } 1869 1870 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1871 struct iwl_mvm_sta *mvm_sta) 1872 { 1873 int i; 1874 1875 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1876 u16 txq_id; 1877 int ret; 1878 1879 spin_lock_bh(&mvm_sta->lock); 1880 txq_id = mvm_sta->tid_data[i].txq_id; 1881 spin_unlock_bh(&mvm_sta->lock); 1882 1883 if (txq_id == IWL_MVM_INVALID_QUEUE) 1884 continue; 1885 1886 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1887 if (ret) 1888 return ret; 1889 } 1890 1891 return 0; 1892 } 1893 1894 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1895 struct ieee80211_vif *vif, 1896 struct ieee80211_sta *sta) 1897 { 1898 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1899 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1900 u8 sta_id = mvm_sta->sta_id; 1901 int ret; 1902 1903 lockdep_assert_held(&mvm->mutex); 1904 1905 if (iwl_mvm_has_new_rx_api(mvm)) 1906 kfree(mvm_sta->dup_data); 1907 1908 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1909 if (ret) 1910 return ret; 1911 1912 /* flush its queues here since we are freeing mvm_sta */ 1913 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1914 if (ret) 1915 return ret; 1916 if (iwl_mvm_has_new_tx_api(mvm)) { 1917 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1918 } else { 1919 u32 q_mask = mvm_sta->tfd_queue_msk; 1920 1921 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1922 q_mask); 1923 } 1924 if (ret) 1925 return ret; 1926 1927 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1928 1929 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1930 1931 /* If there is a TXQ still marked as reserved - free it */ 1932 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1933 u8 reserved_txq = mvm_sta->reserved_queue; 1934 enum iwl_mvm_queue_status *status; 1935 1936 /* 1937 * If no traffic has gone through the reserved TXQ - it 1938 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1939 * should be manually marked as free again 1940 */ 1941 status = &mvm->queue_info[reserved_txq].status; 1942 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1943 (*status != IWL_MVM_QUEUE_FREE), 1944 "sta_id %d reserved txq %d status %d", 1945 sta_id, reserved_txq, *status)) 1946 return -EINVAL; 1947 1948 *status = IWL_MVM_QUEUE_FREE; 1949 } 1950 1951 if (vif->type == NL80211_IFTYPE_STATION && 1952 mvmvif->ap_sta_id == sta_id) { 1953 /* if associated - we can't remove the AP STA now */ 1954 if (vif->cfg.assoc) 1955 return ret; 1956 1957 /* first remove remaining keys */ 1958 iwl_mvm_sec_key_remove_ap(mvm, vif); 1959 1960 /* unassoc - go ahead - remove the AP STA now */ 1961 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1962 } 1963 1964 /* 1965 * This shouldn't happen - the TDLS channel switch should be canceled 1966 * before the STA is removed. 1967 */ 1968 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1969 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1970 cancel_delayed_work(&mvm->tdls_cs.dwork); 1971 } 1972 1973 /* 1974 * Make sure that the tx response code sees the station as -EBUSY and 1975 * calls the drain worker. 1976 */ 1977 spin_lock_bh(&mvm_sta->lock); 1978 spin_unlock_bh(&mvm_sta->lock); 1979 1980 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1981 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1982 1983 return ret; 1984 } 1985 1986 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1987 struct ieee80211_vif *vif, 1988 u8 sta_id) 1989 { 1990 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1991 1992 lockdep_assert_held(&mvm->mutex); 1993 1994 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1995 return ret; 1996 } 1997 1998 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1999 struct iwl_mvm_int_sta *sta, 2000 u32 qmask, enum nl80211_iftype iftype, 2001 enum iwl_sta_type type) 2002 { 2003 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2004 sta->sta_id == IWL_MVM_INVALID_STA) { 2005 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2006 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2007 return -ENOSPC; 2008 } 2009 2010 sta->tfd_queue_msk = qmask; 2011 sta->type = type; 2012 2013 /* put a non-NULL value so iterating over the stations won't stop */ 2014 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2015 return 0; 2016 } 2017 2018 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2019 { 2020 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2021 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2022 sta->sta_id = IWL_MVM_INVALID_STA; 2023 } 2024 2025 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2026 u8 sta_id, u8 fifo) 2027 { 2028 unsigned int wdg_timeout = 2029 mvm->trans->trans_cfg->base_params->wd_timeout; 2030 struct iwl_trans_txq_scd_cfg cfg = { 2031 .fifo = fifo, 2032 .sta_id = sta_id, 2033 .tid = IWL_MAX_TID_COUNT, 2034 .aggregate = false, 2035 .frame_limit = IWL_FRAME_LIMIT, 2036 }; 2037 2038 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2039 2040 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2041 } 2042 2043 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2044 { 2045 unsigned int wdg_timeout = 2046 mvm->trans->trans_cfg->base_params->wd_timeout; 2047 2048 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2049 2050 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 2051 wdg_timeout); 2052 } 2053 2054 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2055 int maccolor, u8 *addr, 2056 struct iwl_mvm_int_sta *sta, 2057 u16 *queue, int fifo) 2058 { 2059 int ret; 2060 2061 /* Map queue to fifo - needs to happen before adding station */ 2062 if (!iwl_mvm_has_new_tx_api(mvm)) 2063 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2064 2065 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2066 if (ret) { 2067 if (!iwl_mvm_has_new_tx_api(mvm)) 2068 iwl_mvm_disable_txq(mvm, NULL, queue, 2069 IWL_MAX_TID_COUNT); 2070 return ret; 2071 } 2072 2073 /* 2074 * For 22000 firmware and on we cannot add queue to a station unknown 2075 * to firmware so enable queue here - after the station was added 2076 */ 2077 if (iwl_mvm_has_new_tx_api(mvm)) { 2078 int txq; 2079 2080 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2081 if (txq < 0) { 2082 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2083 return txq; 2084 } 2085 2086 *queue = txq; 2087 } 2088 2089 return 0; 2090 } 2091 2092 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2093 { 2094 int ret; 2095 2096 lockdep_assert_held(&mvm->mutex); 2097 2098 /* Allocate aux station and assign to it the aux queue */ 2099 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2100 NL80211_IFTYPE_UNSPECIFIED, 2101 IWL_STA_AUX_ACTIVITY); 2102 if (ret) 2103 return ret; 2104 2105 /* 2106 * In CDB NICs we need to specify which lmac to use for aux activity 2107 * using the mac_id argument place to send lmac_id to the function 2108 */ 2109 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2110 &mvm->aux_sta, &mvm->aux_queue, 2111 IWL_MVM_TX_FIFO_MCAST); 2112 if (ret) { 2113 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2114 return ret; 2115 } 2116 2117 return 0; 2118 } 2119 2120 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2121 { 2122 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2123 2124 lockdep_assert_held(&mvm->mutex); 2125 2126 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2127 NULL, &mvm->snif_sta, 2128 &mvm->snif_queue, 2129 IWL_MVM_TX_FIFO_BE); 2130 } 2131 2132 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2133 { 2134 int ret; 2135 2136 lockdep_assert_held(&mvm->mutex); 2137 2138 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2139 return -EINVAL; 2140 2141 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT); 2142 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2143 if (ret) 2144 IWL_WARN(mvm, "Failed sending remove station\n"); 2145 2146 return ret; 2147 } 2148 2149 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2150 { 2151 int ret; 2152 2153 lockdep_assert_held(&mvm->mutex); 2154 2155 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2156 return -EINVAL; 2157 2158 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT); 2159 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2160 if (ret) 2161 IWL_WARN(mvm, "Failed sending remove station\n"); 2162 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2163 2164 return ret; 2165 } 2166 2167 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2168 { 2169 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2170 } 2171 2172 /* 2173 * Send the add station command for the vif's broadcast station. 2174 * Assumes that the station was already allocated. 2175 * 2176 * @mvm: the mvm component 2177 * @vif: the interface to which the broadcast station is added 2178 * @bsta: the broadcast station to add. 2179 */ 2180 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2181 { 2182 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2183 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2184 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2185 const u8 *baddr = _baddr; 2186 int queue; 2187 int ret; 2188 unsigned int wdg_timeout = 2189 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2190 struct iwl_trans_txq_scd_cfg cfg = { 2191 .fifo = IWL_MVM_TX_FIFO_VO, 2192 .sta_id = mvmvif->bcast_sta.sta_id, 2193 .tid = IWL_MAX_TID_COUNT, 2194 .aggregate = false, 2195 .frame_limit = IWL_FRAME_LIMIT, 2196 }; 2197 2198 lockdep_assert_held(&mvm->mutex); 2199 2200 if (!iwl_mvm_has_new_tx_api(mvm)) { 2201 if (vif->type == NL80211_IFTYPE_AP || 2202 vif->type == NL80211_IFTYPE_ADHOC) { 2203 queue = mvm->probe_queue; 2204 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2205 queue = mvm->p2p_dev_queue; 2206 } else { 2207 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2208 return -EINVAL; 2209 } 2210 2211 bsta->tfd_queue_msk |= BIT(queue); 2212 2213 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2214 } 2215 2216 if (vif->type == NL80211_IFTYPE_ADHOC) 2217 baddr = vif->bss_conf.bssid; 2218 2219 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2220 return -ENOSPC; 2221 2222 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2223 mvmvif->id, mvmvif->color); 2224 if (ret) 2225 return ret; 2226 2227 /* 2228 * For 22000 firmware and on we cannot add queue to a station unknown 2229 * to firmware so enable queue here - after the station was added 2230 */ 2231 if (iwl_mvm_has_new_tx_api(mvm)) { 2232 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2233 IWL_MAX_TID_COUNT, 2234 wdg_timeout); 2235 if (queue < 0) { 2236 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2237 return queue; 2238 } 2239 2240 if (vif->type == NL80211_IFTYPE_AP || 2241 vif->type == NL80211_IFTYPE_ADHOC) 2242 mvm->probe_queue = queue; 2243 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2244 mvm->p2p_dev_queue = queue; 2245 } 2246 2247 return 0; 2248 } 2249 2250 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2251 struct ieee80211_vif *vif) 2252 { 2253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2254 u16 *queueptr, queue; 2255 2256 lockdep_assert_held(&mvm->mutex); 2257 2258 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2259 2260 switch (vif->type) { 2261 case NL80211_IFTYPE_AP: 2262 case NL80211_IFTYPE_ADHOC: 2263 queueptr = &mvm->probe_queue; 2264 break; 2265 case NL80211_IFTYPE_P2P_DEVICE: 2266 queueptr = &mvm->p2p_dev_queue; 2267 break; 2268 default: 2269 WARN(1, "Can't free bcast queue on vif type %d\n", 2270 vif->type); 2271 return; 2272 } 2273 2274 queue = *queueptr; 2275 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT); 2276 if (iwl_mvm_has_new_tx_api(mvm)) 2277 return; 2278 2279 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2280 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2281 } 2282 2283 /* Send the FW a request to remove the station from it's internal data 2284 * structures, but DO NOT remove the entry from the local data structures. */ 2285 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2286 { 2287 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2288 int ret; 2289 2290 lockdep_assert_held(&mvm->mutex); 2291 2292 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2293 2294 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2295 if (ret) 2296 IWL_WARN(mvm, "Failed sending remove station\n"); 2297 return ret; 2298 } 2299 2300 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2301 { 2302 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2303 2304 lockdep_assert_held(&mvm->mutex); 2305 2306 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2307 ieee80211_vif_type_p2p(vif), 2308 IWL_STA_GENERAL_PURPOSE); 2309 } 2310 2311 /* Allocate a new station entry for the broadcast station to the given vif, 2312 * and send it to the FW. 2313 * Note that each P2P mac should have its own broadcast station. 2314 * 2315 * @mvm: the mvm component 2316 * @vif: the interface to which the broadcast station is added 2317 * @bsta: the broadcast station to add. */ 2318 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2319 { 2320 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2321 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2322 int ret; 2323 2324 lockdep_assert_held(&mvm->mutex); 2325 2326 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2327 if (ret) 2328 return ret; 2329 2330 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2331 2332 if (ret) 2333 iwl_mvm_dealloc_int_sta(mvm, bsta); 2334 2335 return ret; 2336 } 2337 2338 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2339 { 2340 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2341 2342 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2343 } 2344 2345 /* 2346 * Send the FW a request to remove the station from it's internal data 2347 * structures, and in addition remove it from the local data structure. 2348 */ 2349 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2350 { 2351 int ret; 2352 2353 lockdep_assert_held(&mvm->mutex); 2354 2355 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2356 2357 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2358 2359 return ret; 2360 } 2361 2362 /* 2363 * Allocate a new station entry for the multicast station to the given vif, 2364 * and send it to the FW. 2365 * Note that each AP/GO mac should have its own multicast station. 2366 * 2367 * @mvm: the mvm component 2368 * @vif: the interface to which the multicast station is added 2369 */ 2370 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2371 { 2372 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2373 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2374 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2375 const u8 *maddr = _maddr; 2376 struct iwl_trans_txq_scd_cfg cfg = { 2377 .fifo = vif->type == NL80211_IFTYPE_AP ? 2378 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2379 .sta_id = msta->sta_id, 2380 .tid = 0, 2381 .aggregate = false, 2382 .frame_limit = IWL_FRAME_LIMIT, 2383 }; 2384 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2385 int ret; 2386 2387 lockdep_assert_held(&mvm->mutex); 2388 2389 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2390 vif->type != NL80211_IFTYPE_ADHOC)) 2391 return -ENOTSUPP; 2392 2393 /* 2394 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2395 * invalid, so make sure we use the queue we want. 2396 * Note that this is done here as we want to avoid making DQA 2397 * changes in mac80211 layer. 2398 */ 2399 if (vif->type == NL80211_IFTYPE_ADHOC) 2400 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2401 2402 /* 2403 * While in previous FWs we had to exclude cab queue from TFD queue 2404 * mask, now it is needed as any other queue. 2405 */ 2406 if (!iwl_mvm_has_new_tx_api(mvm) && 2407 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2408 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2409 timeout); 2410 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2411 } 2412 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2413 mvmvif->id, mvmvif->color); 2414 if (ret) 2415 goto err; 2416 2417 /* 2418 * Enable cab queue after the ADD_STA command is sent. 2419 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2420 * command with unknown station id, and for FW that doesn't support 2421 * station API since the cab queue is not included in the 2422 * tfd_queue_mask. 2423 */ 2424 if (iwl_mvm_has_new_tx_api(mvm)) { 2425 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2426 0, 2427 timeout); 2428 if (queue < 0) { 2429 ret = queue; 2430 goto err; 2431 } 2432 mvmvif->cab_queue = queue; 2433 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2434 IWL_UCODE_TLV_API_STA_TYPE)) 2435 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2436 timeout); 2437 2438 return 0; 2439 err: 2440 iwl_mvm_dealloc_int_sta(mvm, msta); 2441 return ret; 2442 } 2443 2444 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2445 struct ieee80211_key_conf *keyconf, 2446 bool mcast) 2447 { 2448 union { 2449 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2450 struct iwl_mvm_add_sta_key_cmd cmd; 2451 } u = {}; 2452 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2453 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2454 __le16 key_flags; 2455 int ret, size; 2456 u32 status; 2457 2458 /* This is a valid situation for GTK removal */ 2459 if (sta_id == IWL_MVM_INVALID_STA) 2460 return 0; 2461 2462 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2463 STA_KEY_FLG_KEYID_MSK); 2464 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2465 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2466 2467 if (mcast) 2468 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2469 2470 /* 2471 * The fields assigned here are in the same location at the start 2472 * of the command, so we can do this union trick. 2473 */ 2474 u.cmd.common.key_flags = key_flags; 2475 u.cmd.common.key_offset = keyconf->hw_key_idx; 2476 u.cmd.common.sta_id = sta_id; 2477 2478 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2479 2480 status = ADD_STA_SUCCESS; 2481 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2482 &status); 2483 2484 switch (status) { 2485 case ADD_STA_SUCCESS: 2486 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2487 break; 2488 default: 2489 ret = -EIO; 2490 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2491 break; 2492 } 2493 2494 return ret; 2495 } 2496 2497 /* 2498 * Send the FW a request to remove the station from it's internal data 2499 * structures, and in addition remove it from the local data structure. 2500 */ 2501 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2502 { 2503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2504 int ret; 2505 2506 lockdep_assert_held(&mvm->mutex); 2507 2508 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2509 2510 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0); 2511 2512 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2513 if (ret) 2514 IWL_WARN(mvm, "Failed sending remove station\n"); 2515 2516 return ret; 2517 } 2518 2519 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2520 { 2521 struct iwl_mvm_delba_data notif = { 2522 .baid = baid, 2523 }; 2524 2525 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2526 ¬if, sizeof(notif)); 2527 }; 2528 2529 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2530 struct iwl_mvm_baid_data *data) 2531 { 2532 int i; 2533 2534 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2535 2536 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2537 int j; 2538 struct iwl_mvm_reorder_buffer *reorder_buf = 2539 &data->reorder_buf[i]; 2540 struct iwl_mvm_reorder_buf_entry *entries = 2541 &data->entries[i * data->entries_per_queue]; 2542 2543 spin_lock_bh(&reorder_buf->lock); 2544 if (likely(!reorder_buf->num_stored)) { 2545 spin_unlock_bh(&reorder_buf->lock); 2546 continue; 2547 } 2548 2549 /* 2550 * This shouldn't happen in regular DELBA since the internal 2551 * delBA notification should trigger a release of all frames in 2552 * the reorder buffer. 2553 */ 2554 WARN_ON(1); 2555 2556 for (j = 0; j < reorder_buf->buf_size; j++) 2557 __skb_queue_purge(&entries[j].e.frames); 2558 /* 2559 * Prevent timer re-arm. This prevents a very far fetched case 2560 * where we timed out on the notification. There may be prior 2561 * RX frames pending in the RX queue before the notification 2562 * that might get processed between now and the actual deletion 2563 * and we would re-arm the timer although we are deleting the 2564 * reorder buffer. 2565 */ 2566 reorder_buf->removed = true; 2567 spin_unlock_bh(&reorder_buf->lock); 2568 del_timer_sync(&reorder_buf->reorder_timer); 2569 } 2570 } 2571 2572 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2573 struct iwl_mvm_baid_data *data, 2574 u16 ssn, u16 buf_size) 2575 { 2576 int i; 2577 2578 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2579 struct iwl_mvm_reorder_buffer *reorder_buf = 2580 &data->reorder_buf[i]; 2581 struct iwl_mvm_reorder_buf_entry *entries = 2582 &data->entries[i * data->entries_per_queue]; 2583 int j; 2584 2585 reorder_buf->num_stored = 0; 2586 reorder_buf->head_sn = ssn; 2587 reorder_buf->buf_size = buf_size; 2588 /* rx reorder timer */ 2589 timer_setup(&reorder_buf->reorder_timer, 2590 iwl_mvm_reorder_timer_expired, 0); 2591 spin_lock_init(&reorder_buf->lock); 2592 reorder_buf->mvm = mvm; 2593 reorder_buf->queue = i; 2594 reorder_buf->valid = false; 2595 for (j = 0; j < reorder_buf->buf_size; j++) 2596 __skb_queue_head_init(&entries[j].e.frames); 2597 } 2598 } 2599 2600 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2601 struct iwl_mvm_sta *mvm_sta, 2602 bool start, int tid, u16 ssn, 2603 u16 buf_size) 2604 { 2605 struct iwl_mvm_add_sta_cmd cmd = { 2606 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2607 .sta_id = mvm_sta->sta_id, 2608 .add_modify = STA_MODE_MODIFY, 2609 }; 2610 u32 status; 2611 int ret; 2612 2613 if (start) { 2614 cmd.add_immediate_ba_tid = tid; 2615 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2616 cmd.rx_ba_window = cpu_to_le16(buf_size); 2617 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2618 } else { 2619 cmd.remove_immediate_ba_tid = tid; 2620 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2621 } 2622 2623 status = ADD_STA_SUCCESS; 2624 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2625 iwl_mvm_add_sta_cmd_size(mvm), 2626 &cmd, &status); 2627 if (ret) 2628 return ret; 2629 2630 switch (status & IWL_ADD_STA_STATUS_MASK) { 2631 case ADD_STA_SUCCESS: 2632 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2633 start ? "start" : "stopp"); 2634 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2635 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2636 return -EINVAL; 2637 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2638 case ADD_STA_IMMEDIATE_BA_FAILURE: 2639 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2640 return -ENOSPC; 2641 default: 2642 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2643 start ? "start" : "stopp", status); 2644 return -EIO; 2645 } 2646 } 2647 2648 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2649 struct iwl_mvm_sta *mvm_sta, 2650 bool start, int tid, u16 ssn, 2651 u16 buf_size, int baid) 2652 { 2653 struct iwl_rx_baid_cfg_cmd cmd = { 2654 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2655 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2656 }; 2657 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2658 int ret; 2659 2660 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2661 2662 if (start) { 2663 cmd.alloc.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2664 cmd.alloc.tid = tid; 2665 cmd.alloc.ssn = cpu_to_le16(ssn); 2666 cmd.alloc.win_size = cpu_to_le16(buf_size); 2667 baid = -EIO; 2668 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2669 cmd.remove_v1.baid = cpu_to_le32(baid); 2670 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2671 } else { 2672 cmd.remove.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2673 cmd.remove.tid = cpu_to_le32(tid); 2674 } 2675 2676 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2677 &cmd, &baid); 2678 if (ret) 2679 return ret; 2680 2681 if (!start) { 2682 /* ignore firmware baid on remove */ 2683 baid = 0; 2684 } 2685 2686 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2687 start ? "start" : "stopp"); 2688 2689 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2690 return -EINVAL; 2691 2692 return baid; 2693 } 2694 2695 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta, 2696 bool start, int tid, u16 ssn, u16 buf_size, 2697 int baid) 2698 { 2699 if (fw_has_capa(&mvm->fw->ucode_capa, 2700 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2701 return iwl_mvm_fw_baid_op_cmd(mvm, mvm_sta, start, 2702 tid, ssn, buf_size, baid); 2703 2704 return iwl_mvm_fw_baid_op_sta(mvm, mvm_sta, start, 2705 tid, ssn, buf_size); 2706 } 2707 2708 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2709 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2710 { 2711 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2712 struct iwl_mvm_baid_data *baid_data = NULL; 2713 int ret, baid; 2714 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2715 IWL_MAX_BAID_OLD; 2716 2717 lockdep_assert_held(&mvm->mutex); 2718 2719 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2720 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2721 return -ENOSPC; 2722 } 2723 2724 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2725 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2726 2727 /* sparse doesn't like the __align() so don't check */ 2728 #ifndef __CHECKER__ 2729 /* 2730 * The division below will be OK if either the cache line size 2731 * can be divided by the entry size (ALIGN will round up) or if 2732 * if the entry size can be divided by the cache line size, in 2733 * which case the ALIGN() will do nothing. 2734 */ 2735 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2736 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2737 #endif 2738 2739 /* 2740 * Upward align the reorder buffer size to fill an entire cache 2741 * line for each queue, to avoid sharing cache lines between 2742 * different queues. 2743 */ 2744 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2745 2746 /* 2747 * Allocate here so if allocation fails we can bail out early 2748 * before starting the BA session in the firmware 2749 */ 2750 baid_data = kzalloc(sizeof(*baid_data) + 2751 mvm->trans->num_rx_queues * 2752 reorder_buf_size, 2753 GFP_KERNEL); 2754 if (!baid_data) 2755 return -ENOMEM; 2756 2757 /* 2758 * This division is why we need the above BUILD_BUG_ON(), 2759 * if that doesn't hold then this will not be right. 2760 */ 2761 baid_data->entries_per_queue = 2762 reorder_buf_size / sizeof(baid_data->entries[0]); 2763 } 2764 2765 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2766 baid = mvm_sta->tid_to_baid[tid]; 2767 } else { 2768 /* we don't really need it in this case */ 2769 baid = -1; 2770 } 2771 2772 /* Don't send command to remove (start=0) BAID during restart */ 2773 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2774 baid = iwl_mvm_fw_baid_op(mvm, mvm_sta, start, tid, ssn, buf_size, 2775 baid); 2776 2777 if (baid < 0) { 2778 ret = baid; 2779 goto out_free; 2780 } 2781 2782 if (start) { 2783 mvm->rx_ba_sessions++; 2784 2785 if (!iwl_mvm_has_new_rx_api(mvm)) 2786 return 0; 2787 2788 baid_data->baid = baid; 2789 baid_data->timeout = timeout; 2790 baid_data->last_rx = jiffies; 2791 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2792 timer_setup(&baid_data->session_timer, 2793 iwl_mvm_rx_agg_session_expired, 0); 2794 baid_data->mvm = mvm; 2795 baid_data->tid = tid; 2796 baid_data->sta_id = mvm_sta->sta_id; 2797 2798 mvm_sta->tid_to_baid[tid] = baid; 2799 if (timeout) 2800 mod_timer(&baid_data->session_timer, 2801 TU_TO_EXP_TIME(timeout * 2)); 2802 2803 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2804 /* 2805 * protect the BA data with RCU to cover a case where our 2806 * internal RX sync mechanism will timeout (not that it's 2807 * supposed to happen) and we will free the session data while 2808 * RX is being processed in parallel 2809 */ 2810 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2811 mvm_sta->sta_id, tid, baid); 2812 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2813 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2814 } else { 2815 baid = mvm_sta->tid_to_baid[tid]; 2816 2817 if (mvm->rx_ba_sessions > 0) 2818 /* check that restart flow didn't zero the counter */ 2819 mvm->rx_ba_sessions--; 2820 if (!iwl_mvm_has_new_rx_api(mvm)) 2821 return 0; 2822 2823 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2824 return -EINVAL; 2825 2826 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2827 if (WARN_ON(!baid_data)) 2828 return -EINVAL; 2829 2830 /* synchronize all rx queues so we can safely delete */ 2831 iwl_mvm_free_reorder(mvm, baid_data); 2832 del_timer_sync(&baid_data->session_timer); 2833 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2834 kfree_rcu(baid_data, rcu_head); 2835 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2836 2837 /* 2838 * After we've deleted it, do another queue sync 2839 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2840 * running it won't find a new session in the old 2841 * BAID. It can find the NULL pointer for the BAID, 2842 * but we must not have it find a different session. 2843 */ 2844 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2845 true, NULL, 0); 2846 } 2847 return 0; 2848 2849 out_free: 2850 kfree(baid_data); 2851 return ret; 2852 } 2853 2854 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2855 int tid, u8 queue, bool start) 2856 { 2857 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2858 struct iwl_mvm_add_sta_cmd cmd = {}; 2859 int ret; 2860 u32 status; 2861 2862 lockdep_assert_held(&mvm->mutex); 2863 2864 if (start) { 2865 mvm_sta->tfd_queue_msk |= BIT(queue); 2866 mvm_sta->tid_disable_agg &= ~BIT(tid); 2867 } else { 2868 /* In DQA-mode the queue isn't removed on agg termination */ 2869 mvm_sta->tid_disable_agg |= BIT(tid); 2870 } 2871 2872 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2873 cmd.sta_id = mvm_sta->sta_id; 2874 cmd.add_modify = STA_MODE_MODIFY; 2875 if (!iwl_mvm_has_new_tx_api(mvm)) 2876 cmd.modify_mask = STA_MODIFY_QUEUES; 2877 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2878 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2879 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2880 2881 status = ADD_STA_SUCCESS; 2882 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2883 iwl_mvm_add_sta_cmd_size(mvm), 2884 &cmd, &status); 2885 if (ret) 2886 return ret; 2887 2888 switch (status & IWL_ADD_STA_STATUS_MASK) { 2889 case ADD_STA_SUCCESS: 2890 break; 2891 default: 2892 ret = -EIO; 2893 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2894 start ? "start" : "stopp", status); 2895 break; 2896 } 2897 2898 return ret; 2899 } 2900 2901 const u8 tid_to_mac80211_ac[] = { 2902 IEEE80211_AC_BE, 2903 IEEE80211_AC_BK, 2904 IEEE80211_AC_BK, 2905 IEEE80211_AC_BE, 2906 IEEE80211_AC_VI, 2907 IEEE80211_AC_VI, 2908 IEEE80211_AC_VO, 2909 IEEE80211_AC_VO, 2910 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2911 }; 2912 2913 static const u8 tid_to_ucode_ac[] = { 2914 AC_BE, 2915 AC_BK, 2916 AC_BK, 2917 AC_BE, 2918 AC_VI, 2919 AC_VI, 2920 AC_VO, 2921 AC_VO, 2922 }; 2923 2924 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2925 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2926 { 2927 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2928 struct iwl_mvm_tid_data *tid_data; 2929 u16 normalized_ssn; 2930 u16 txq_id; 2931 int ret; 2932 2933 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2934 return -EINVAL; 2935 2936 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2937 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2938 IWL_ERR(mvm, 2939 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2940 mvmsta->tid_data[tid].state); 2941 return -ENXIO; 2942 } 2943 2944 lockdep_assert_held(&mvm->mutex); 2945 2946 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2947 iwl_mvm_has_new_tx_api(mvm)) { 2948 u8 ac = tid_to_mac80211_ac[tid]; 2949 2950 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2951 if (ret) 2952 return ret; 2953 } 2954 2955 spin_lock_bh(&mvmsta->lock); 2956 2957 /* 2958 * Note the possible cases: 2959 * 1. An enabled TXQ - TXQ needs to become agg'ed 2960 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2961 * it as reserved 2962 */ 2963 txq_id = mvmsta->tid_data[tid].txq_id; 2964 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2965 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2966 IWL_MVM_DQA_MIN_DATA_QUEUE, 2967 IWL_MVM_DQA_MAX_DATA_QUEUE); 2968 if (ret < 0) { 2969 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2970 goto out; 2971 } 2972 2973 txq_id = ret; 2974 2975 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2976 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2977 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2978 ret = -ENXIO; 2979 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2980 tid, IWL_MAX_HW_QUEUES - 1); 2981 goto out; 2982 2983 } else if (unlikely(mvm->queue_info[txq_id].status == 2984 IWL_MVM_QUEUE_SHARED)) { 2985 ret = -ENXIO; 2986 IWL_DEBUG_TX_QUEUES(mvm, 2987 "Can't start tid %d agg on shared queue!\n", 2988 tid); 2989 goto out; 2990 } 2991 2992 IWL_DEBUG_TX_QUEUES(mvm, 2993 "AGG for tid %d will be on queue #%d\n", 2994 tid, txq_id); 2995 2996 tid_data = &mvmsta->tid_data[tid]; 2997 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2998 tid_data->txq_id = txq_id; 2999 *ssn = tid_data->ssn; 3000 3001 IWL_DEBUG_TX_QUEUES(mvm, 3002 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3003 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 3004 tid_data->next_reclaimed); 3005 3006 /* 3007 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3008 * to align the wrap around of ssn so we compare relevant values. 3009 */ 3010 normalized_ssn = tid_data->ssn; 3011 if (mvm->trans->trans_cfg->gen2) 3012 normalized_ssn &= 0xff; 3013 3014 if (normalized_ssn == tid_data->next_reclaimed) { 3015 tid_data->state = IWL_AGG_STARTING; 3016 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3017 } else { 3018 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3019 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3020 } 3021 3022 out: 3023 spin_unlock_bh(&mvmsta->lock); 3024 3025 return ret; 3026 } 3027 3028 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3029 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3030 bool amsdu) 3031 { 3032 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3033 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3034 unsigned int wdg_timeout = 3035 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3036 int queue, ret; 3037 bool alloc_queue = true; 3038 enum iwl_mvm_queue_status queue_status; 3039 u16 ssn; 3040 3041 struct iwl_trans_txq_scd_cfg cfg = { 3042 .sta_id = mvmsta->sta_id, 3043 .tid = tid, 3044 .frame_limit = buf_size, 3045 .aggregate = true, 3046 }; 3047 3048 /* 3049 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3050 * manager, so this function should never be called in this case. 3051 */ 3052 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3053 return -EINVAL; 3054 3055 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3056 != IWL_MAX_TID_COUNT); 3057 3058 spin_lock_bh(&mvmsta->lock); 3059 ssn = tid_data->ssn; 3060 queue = tid_data->txq_id; 3061 tid_data->state = IWL_AGG_ON; 3062 mvmsta->agg_tids |= BIT(tid); 3063 tid_data->ssn = 0xffff; 3064 tid_data->amsdu_in_ampdu_allowed = amsdu; 3065 spin_unlock_bh(&mvmsta->lock); 3066 3067 if (iwl_mvm_has_new_tx_api(mvm)) { 3068 /* 3069 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3070 * would have failed, so if we are here there is no need to 3071 * allocate a queue. 3072 * However, if aggregation size is different than the default 3073 * size, the scheduler should be reconfigured. 3074 * We cannot do this with the new TX API, so return unsupported 3075 * for now, until it will be offloaded to firmware.. 3076 * Note that if SCD default value changes - this condition 3077 * should be updated as well. 3078 */ 3079 if (buf_size < IWL_FRAME_LIMIT) 3080 return -ENOTSUPP; 3081 3082 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3083 if (ret) 3084 return -EIO; 3085 goto out; 3086 } 3087 3088 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3089 3090 queue_status = mvm->queue_info[queue].status; 3091 3092 /* Maybe there is no need to even alloc a queue... */ 3093 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3094 alloc_queue = false; 3095 3096 /* 3097 * Only reconfig the SCD for the queue if the window size has 3098 * changed from current (become smaller) 3099 */ 3100 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3101 /* 3102 * If reconfiguring an existing queue, it first must be 3103 * drained 3104 */ 3105 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3106 BIT(queue)); 3107 if (ret) { 3108 IWL_ERR(mvm, 3109 "Error draining queue before reconfig\n"); 3110 return ret; 3111 } 3112 3113 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3114 mvmsta->sta_id, tid, 3115 buf_size, ssn); 3116 if (ret) { 3117 IWL_ERR(mvm, 3118 "Error reconfiguring TXQ #%d\n", queue); 3119 return ret; 3120 } 3121 } 3122 3123 if (alloc_queue) 3124 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3125 &cfg, wdg_timeout); 3126 3127 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3128 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3129 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3130 if (ret) 3131 return -EIO; 3132 } 3133 3134 /* No need to mark as reserved */ 3135 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3136 3137 out: 3138 /* 3139 * Even though in theory the peer could have different 3140 * aggregation reorder buffer sizes for different sessions, 3141 * our ucode doesn't allow for that and has a global limit 3142 * for each station. Therefore, use the minimum of all the 3143 * aggregation sessions and our default value. 3144 */ 3145 mvmsta->max_agg_bufsize = 3146 min(mvmsta->max_agg_bufsize, buf_size); 3147 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3148 3149 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3150 sta->addr, tid); 3151 3152 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3153 } 3154 3155 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3156 struct iwl_mvm_sta *mvmsta, 3157 struct iwl_mvm_tid_data *tid_data) 3158 { 3159 u16 txq_id = tid_data->txq_id; 3160 3161 lockdep_assert_held(&mvm->mutex); 3162 3163 if (iwl_mvm_has_new_tx_api(mvm)) 3164 return; 3165 3166 /* 3167 * The TXQ is marked as reserved only if no traffic came through yet 3168 * This means no traffic has been sent on this TID (agg'd or not), so 3169 * we no longer have use for the queue. Since it hasn't even been 3170 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3171 * free. 3172 */ 3173 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3174 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3175 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3176 } 3177 } 3178 3179 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3180 struct ieee80211_sta *sta, u16 tid) 3181 { 3182 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3183 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3184 u16 txq_id; 3185 int err; 3186 3187 /* 3188 * If mac80211 is cleaning its state, then say that we finished since 3189 * our state has been cleared anyway. 3190 */ 3191 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3192 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3193 return 0; 3194 } 3195 3196 spin_lock_bh(&mvmsta->lock); 3197 3198 txq_id = tid_data->txq_id; 3199 3200 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3201 mvmsta->sta_id, tid, txq_id, tid_data->state); 3202 3203 mvmsta->agg_tids &= ~BIT(tid); 3204 3205 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3206 3207 switch (tid_data->state) { 3208 case IWL_AGG_ON: 3209 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3210 3211 IWL_DEBUG_TX_QUEUES(mvm, 3212 "ssn = %d, next_recl = %d\n", 3213 tid_data->ssn, tid_data->next_reclaimed); 3214 3215 tid_data->ssn = 0xffff; 3216 tid_data->state = IWL_AGG_OFF; 3217 spin_unlock_bh(&mvmsta->lock); 3218 3219 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3220 3221 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3222 return 0; 3223 case IWL_AGG_STARTING: 3224 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3225 /* 3226 * The agg session has been stopped before it was set up. This 3227 * can happen when the AddBA timer times out for example. 3228 */ 3229 3230 /* No barriers since we are under mutex */ 3231 lockdep_assert_held(&mvm->mutex); 3232 3233 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3234 tid_data->state = IWL_AGG_OFF; 3235 err = 0; 3236 break; 3237 default: 3238 IWL_ERR(mvm, 3239 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3240 mvmsta->sta_id, tid, tid_data->state); 3241 IWL_ERR(mvm, 3242 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3243 err = -EINVAL; 3244 } 3245 3246 spin_unlock_bh(&mvmsta->lock); 3247 3248 return err; 3249 } 3250 3251 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3252 struct ieee80211_sta *sta, u16 tid) 3253 { 3254 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3255 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3256 u16 txq_id; 3257 enum iwl_mvm_agg_state old_state; 3258 3259 /* 3260 * First set the agg state to OFF to avoid calling 3261 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3262 */ 3263 spin_lock_bh(&mvmsta->lock); 3264 txq_id = tid_data->txq_id; 3265 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3266 mvmsta->sta_id, tid, txq_id, tid_data->state); 3267 old_state = tid_data->state; 3268 tid_data->state = IWL_AGG_OFF; 3269 mvmsta->agg_tids &= ~BIT(tid); 3270 spin_unlock_bh(&mvmsta->lock); 3271 3272 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3273 3274 if (old_state >= IWL_AGG_ON) { 3275 iwl_mvm_drain_sta(mvm, mvmsta, true); 3276 3277 if (iwl_mvm_has_new_tx_api(mvm)) { 3278 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3279 BIT(tid))) 3280 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3281 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3282 } else { 3283 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3284 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3285 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3286 } 3287 3288 iwl_mvm_drain_sta(mvm, mvmsta, false); 3289 3290 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3291 } 3292 3293 return 0; 3294 } 3295 3296 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3297 { 3298 int i, max = -1, max_offs = -1; 3299 3300 lockdep_assert_held(&mvm->mutex); 3301 3302 /* Pick the unused key offset with the highest 'deleted' 3303 * counter. Every time a key is deleted, all the counters 3304 * are incremented and the one that was just deleted is 3305 * reset to zero. Thus, the highest counter is the one 3306 * that was deleted longest ago. Pick that one. 3307 */ 3308 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3309 if (test_bit(i, mvm->fw_key_table)) 3310 continue; 3311 if (mvm->fw_key_deleted[i] > max) { 3312 max = mvm->fw_key_deleted[i]; 3313 max_offs = i; 3314 } 3315 } 3316 3317 if (max_offs < 0) 3318 return STA_KEY_IDX_INVALID; 3319 3320 return max_offs; 3321 } 3322 3323 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3324 struct ieee80211_vif *vif, 3325 struct ieee80211_sta *sta) 3326 { 3327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3328 3329 if (sta) 3330 return iwl_mvm_sta_from_mac80211(sta); 3331 3332 /* 3333 * The device expects GTKs for station interfaces to be 3334 * installed as GTKs for the AP station. If we have no 3335 * station ID, then use AP's station ID. 3336 */ 3337 if (vif->type == NL80211_IFTYPE_STATION && 3338 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3339 u8 sta_id = mvmvif->ap_sta_id; 3340 3341 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3342 lockdep_is_held(&mvm->mutex)); 3343 3344 /* 3345 * It is possible that the 'sta' parameter is NULL, 3346 * for example when a GTK is removed - the sta_id will then 3347 * be the AP ID, and no station was passed by mac80211. 3348 */ 3349 if (IS_ERR_OR_NULL(sta)) 3350 return NULL; 3351 3352 return iwl_mvm_sta_from_mac80211(sta); 3353 } 3354 3355 return NULL; 3356 } 3357 3358 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3359 { 3360 int i; 3361 3362 for (i = len - 1; i >= 0; i--) { 3363 if (pn1[i] > pn2[i]) 3364 return 1; 3365 if (pn1[i] < pn2[i]) 3366 return -1; 3367 } 3368 3369 return 0; 3370 } 3371 3372 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3373 u32 sta_id, 3374 struct ieee80211_key_conf *key, bool mcast, 3375 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3376 u8 key_offset, bool mfp) 3377 { 3378 union { 3379 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3380 struct iwl_mvm_add_sta_key_cmd cmd; 3381 } u = {}; 3382 __le16 key_flags; 3383 int ret; 3384 u32 status; 3385 u16 keyidx; 3386 u64 pn = 0; 3387 int i, size; 3388 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3389 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3390 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3391 new_api ? 2 : 1); 3392 3393 if (sta_id == IWL_MVM_INVALID_STA) 3394 return -EINVAL; 3395 3396 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3397 STA_KEY_FLG_KEYID_MSK; 3398 key_flags = cpu_to_le16(keyidx); 3399 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3400 3401 switch (key->cipher) { 3402 case WLAN_CIPHER_SUITE_TKIP: 3403 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3404 if (api_ver >= 2) { 3405 memcpy((void *)&u.cmd.tx_mic_key, 3406 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3407 IWL_MIC_KEY_SIZE); 3408 3409 memcpy((void *)&u.cmd.rx_mic_key, 3410 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3411 IWL_MIC_KEY_SIZE); 3412 pn = atomic64_read(&key->tx_pn); 3413 3414 } else { 3415 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3416 for (i = 0; i < 5; i++) 3417 u.cmd_v1.tkip_rx_ttak[i] = 3418 cpu_to_le16(tkip_p1k[i]); 3419 } 3420 memcpy(u.cmd.common.key, key->key, key->keylen); 3421 break; 3422 case WLAN_CIPHER_SUITE_CCMP: 3423 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3424 memcpy(u.cmd.common.key, key->key, key->keylen); 3425 if (api_ver >= 2) 3426 pn = atomic64_read(&key->tx_pn); 3427 break; 3428 case WLAN_CIPHER_SUITE_WEP104: 3429 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3430 fallthrough; 3431 case WLAN_CIPHER_SUITE_WEP40: 3432 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3433 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3434 break; 3435 case WLAN_CIPHER_SUITE_GCMP_256: 3436 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3437 fallthrough; 3438 case WLAN_CIPHER_SUITE_GCMP: 3439 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3440 memcpy(u.cmd.common.key, key->key, key->keylen); 3441 if (api_ver >= 2) 3442 pn = atomic64_read(&key->tx_pn); 3443 break; 3444 default: 3445 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3446 memcpy(u.cmd.common.key, key->key, key->keylen); 3447 } 3448 3449 if (mcast) 3450 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3451 if (mfp) 3452 key_flags |= cpu_to_le16(STA_KEY_MFP); 3453 3454 u.cmd.common.key_offset = key_offset; 3455 u.cmd.common.key_flags = key_flags; 3456 u.cmd.common.sta_id = sta_id; 3457 3458 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3459 i = 0; 3460 else 3461 i = -1; 3462 3463 for (; i < IEEE80211_NUM_TIDS; i++) { 3464 struct ieee80211_key_seq seq = {}; 3465 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3466 int rx_pn_len = 8; 3467 /* there's a hole at 2/3 in FW format depending on version */ 3468 int hole = api_ver >= 3 ? 0 : 2; 3469 3470 ieee80211_get_key_rx_seq(key, i, &seq); 3471 3472 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3473 rx_pn[0] = seq.tkip.iv16; 3474 rx_pn[1] = seq.tkip.iv16 >> 8; 3475 rx_pn[2 + hole] = seq.tkip.iv32; 3476 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3477 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3478 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3479 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3480 rx_pn = seq.hw.seq; 3481 rx_pn_len = seq.hw.seq_len; 3482 } else { 3483 rx_pn[0] = seq.ccmp.pn[0]; 3484 rx_pn[1] = seq.ccmp.pn[1]; 3485 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3486 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3487 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3488 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3489 } 3490 3491 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3492 rx_pn_len) > 0) 3493 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3494 rx_pn_len); 3495 } 3496 3497 if (api_ver >= 2) { 3498 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3499 size = sizeof(u.cmd); 3500 } else { 3501 size = sizeof(u.cmd_v1); 3502 } 3503 3504 status = ADD_STA_SUCCESS; 3505 if (cmd_flags & CMD_ASYNC) 3506 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3507 &u.cmd); 3508 else 3509 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3510 &u.cmd, &status); 3511 3512 switch (status) { 3513 case ADD_STA_SUCCESS: 3514 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3515 break; 3516 default: 3517 ret = -EIO; 3518 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3519 break; 3520 } 3521 3522 return ret; 3523 } 3524 3525 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3526 struct ieee80211_key_conf *keyconf, 3527 u8 sta_id, bool remove_key) 3528 { 3529 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3530 3531 /* verify the key details match the required command's expectations */ 3532 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3533 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3534 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3535 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3536 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3537 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3538 return -EINVAL; 3539 3540 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3541 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3542 return -EINVAL; 3543 3544 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3545 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3546 3547 if (remove_key) { 3548 /* This is a valid situation for IGTK */ 3549 if (sta_id == IWL_MVM_INVALID_STA) 3550 return 0; 3551 3552 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3553 } else { 3554 struct ieee80211_key_seq seq; 3555 const u8 *pn; 3556 3557 switch (keyconf->cipher) { 3558 case WLAN_CIPHER_SUITE_AES_CMAC: 3559 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3560 break; 3561 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3562 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3563 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3564 break; 3565 default: 3566 return -EINVAL; 3567 } 3568 3569 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3570 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3571 igtk_cmd.ctrl_flags |= 3572 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3573 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3574 pn = seq.aes_cmac.pn; 3575 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3576 ((u64) pn[4] << 8) | 3577 ((u64) pn[3] << 16) | 3578 ((u64) pn[2] << 24) | 3579 ((u64) pn[1] << 32) | 3580 ((u64) pn[0] << 40)); 3581 } 3582 3583 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3584 remove_key ? "removing" : "installing", 3585 keyconf->keyidx >= 6 ? "B" : "", 3586 keyconf->keyidx, igtk_cmd.sta_id); 3587 3588 if (!iwl_mvm_has_new_rx_api(mvm)) { 3589 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3590 .ctrl_flags = igtk_cmd.ctrl_flags, 3591 .key_id = igtk_cmd.key_id, 3592 .sta_id = igtk_cmd.sta_id, 3593 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3594 }; 3595 3596 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3597 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3598 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3599 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3600 } 3601 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3602 sizeof(igtk_cmd), &igtk_cmd); 3603 } 3604 3605 3606 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3607 struct ieee80211_vif *vif, 3608 struct ieee80211_sta *sta) 3609 { 3610 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3611 3612 if (sta) 3613 return sta->addr; 3614 3615 if (vif->type == NL80211_IFTYPE_STATION && 3616 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3617 u8 sta_id = mvmvif->ap_sta_id; 3618 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3619 lockdep_is_held(&mvm->mutex)); 3620 return sta->addr; 3621 } 3622 3623 3624 return NULL; 3625 } 3626 3627 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3628 struct ieee80211_vif *vif, 3629 struct ieee80211_sta *sta, 3630 struct ieee80211_key_conf *keyconf, 3631 u8 key_offset, 3632 bool mcast) 3633 { 3634 const u8 *addr; 3635 struct ieee80211_key_seq seq; 3636 u16 p1k[5]; 3637 u32 sta_id; 3638 bool mfp = false; 3639 3640 if (sta) { 3641 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3642 3643 sta_id = mvm_sta->sta_id; 3644 mfp = sta->mfp; 3645 } else if (vif->type == NL80211_IFTYPE_AP && 3646 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3647 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3648 3649 sta_id = mvmvif->mcast_sta.sta_id; 3650 } else { 3651 IWL_ERR(mvm, "Failed to find station id\n"); 3652 return -EINVAL; 3653 } 3654 3655 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3656 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3657 /* get phase 1 key from mac80211 */ 3658 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3659 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3660 3661 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3662 seq.tkip.iv32, p1k, 0, key_offset, 3663 mfp); 3664 } 3665 3666 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3667 0, NULL, 0, key_offset, mfp); 3668 } 3669 3670 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3671 struct ieee80211_vif *vif, 3672 struct ieee80211_sta *sta, 3673 struct ieee80211_key_conf *keyconf, 3674 u8 key_offset) 3675 { 3676 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3677 struct iwl_mvm_sta *mvm_sta; 3678 u8 sta_id = IWL_MVM_INVALID_STA; 3679 int ret; 3680 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3681 3682 lockdep_assert_held(&mvm->mutex); 3683 3684 if (vif->type != NL80211_IFTYPE_AP || 3685 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3686 /* Get the station id from the mvm local station table */ 3687 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3688 if (!mvm_sta) { 3689 IWL_ERR(mvm, "Failed to find station\n"); 3690 return -EINVAL; 3691 } 3692 sta_id = mvm_sta->sta_id; 3693 3694 /* 3695 * It is possible that the 'sta' parameter is NULL, and thus 3696 * there is a need to retrieve the sta from the local station 3697 * table. 3698 */ 3699 if (!sta) { 3700 sta = rcu_dereference_protected( 3701 mvm->fw_id_to_mac_id[sta_id], 3702 lockdep_is_held(&mvm->mutex)); 3703 if (IS_ERR_OR_NULL(sta)) { 3704 IWL_ERR(mvm, "Invalid station id\n"); 3705 return -EINVAL; 3706 } 3707 } 3708 3709 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3710 return -EINVAL; 3711 } else { 3712 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3713 3714 sta_id = mvmvif->mcast_sta.sta_id; 3715 } 3716 3717 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3718 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3719 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3720 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3721 goto end; 3722 } 3723 3724 /* If the key_offset is not pre-assigned, we need to find a 3725 * new offset to use. In normal cases, the offset is not 3726 * pre-assigned, but during HW_RESTART we want to reuse the 3727 * same indices, so we pass them when this function is called. 3728 * 3729 * In D3 entry, we need to hardcoded the indices (because the 3730 * firmware hardcodes the PTK offset to 0). In this case, we 3731 * need to make sure we don't overwrite the hw_key_idx in the 3732 * keyconf structure, because otherwise we cannot configure 3733 * the original ones back when resuming. 3734 */ 3735 if (key_offset == STA_KEY_IDX_INVALID) { 3736 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3737 if (key_offset == STA_KEY_IDX_INVALID) 3738 return -ENOSPC; 3739 keyconf->hw_key_idx = key_offset; 3740 } 3741 3742 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3743 if (ret) 3744 goto end; 3745 3746 /* 3747 * For WEP, the same key is used for multicast and unicast. Upload it 3748 * again, using the same key offset, and now pointing the other one 3749 * to the same key slot (offset). 3750 * If this fails, remove the original as well. 3751 */ 3752 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3753 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3754 sta) { 3755 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3756 key_offset, !mcast); 3757 if (ret) { 3758 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3759 goto end; 3760 } 3761 } 3762 3763 __set_bit(key_offset, mvm->fw_key_table); 3764 3765 end: 3766 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3767 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3768 sta ? sta->addr : zero_addr, ret); 3769 return ret; 3770 } 3771 3772 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3773 struct ieee80211_vif *vif, 3774 struct ieee80211_sta *sta, 3775 struct ieee80211_key_conf *keyconf) 3776 { 3777 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3778 struct iwl_mvm_sta *mvm_sta; 3779 u8 sta_id = IWL_MVM_INVALID_STA; 3780 int ret, i; 3781 3782 lockdep_assert_held(&mvm->mutex); 3783 3784 /* Get the station from the mvm local station table */ 3785 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3786 if (mvm_sta) 3787 sta_id = mvm_sta->sta_id; 3788 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3789 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3790 3791 3792 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3793 keyconf->keyidx, sta_id); 3794 3795 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3796 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3797 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3798 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3799 3800 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3801 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3802 keyconf->hw_key_idx); 3803 return -ENOENT; 3804 } 3805 3806 /* track which key was deleted last */ 3807 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3808 if (mvm->fw_key_deleted[i] < U8_MAX) 3809 mvm->fw_key_deleted[i]++; 3810 } 3811 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3812 3813 if (sta && !mvm_sta) { 3814 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3815 return 0; 3816 } 3817 3818 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3819 if (ret) 3820 return ret; 3821 3822 /* delete WEP key twice to get rid of (now useless) offset */ 3823 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3824 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3825 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3826 3827 return ret; 3828 } 3829 3830 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3831 struct ieee80211_vif *vif, 3832 struct ieee80211_key_conf *keyconf, 3833 struct ieee80211_sta *sta, u32 iv32, 3834 u16 *phase1key) 3835 { 3836 struct iwl_mvm_sta *mvm_sta; 3837 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3838 bool mfp = sta ? sta->mfp : false; 3839 3840 rcu_read_lock(); 3841 3842 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3843 if (WARN_ON_ONCE(!mvm_sta)) 3844 goto unlock; 3845 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3846 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3847 mfp); 3848 3849 unlock: 3850 rcu_read_unlock(); 3851 } 3852 3853 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3854 struct ieee80211_sta *sta) 3855 { 3856 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3857 struct iwl_mvm_add_sta_cmd cmd = { 3858 .add_modify = STA_MODE_MODIFY, 3859 .sta_id = mvmsta->sta_id, 3860 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3861 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3862 }; 3863 int ret; 3864 3865 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3866 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3867 if (ret) 3868 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3869 } 3870 3871 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3872 struct ieee80211_sta *sta, 3873 enum ieee80211_frame_release_type reason, 3874 u16 cnt, u16 tids, bool more_data, 3875 bool single_sta_queue) 3876 { 3877 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3878 struct iwl_mvm_add_sta_cmd cmd = { 3879 .add_modify = STA_MODE_MODIFY, 3880 .sta_id = mvmsta->sta_id, 3881 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3882 .sleep_tx_count = cpu_to_le16(cnt), 3883 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3884 }; 3885 int tid, ret; 3886 unsigned long _tids = tids; 3887 3888 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3889 * Note that this field is reserved and unused by firmware not 3890 * supporting GO uAPSD, so it's safe to always do this. 3891 */ 3892 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3893 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3894 3895 /* If we're releasing frames from aggregation or dqa queues then check 3896 * if all the queues that we're releasing frames from, combined, have: 3897 * - more frames than the service period, in which case more_data 3898 * needs to be set 3899 * - fewer than 'cnt' frames, in which case we need to adjust the 3900 * firmware command (but do that unconditionally) 3901 */ 3902 if (single_sta_queue) { 3903 int remaining = cnt; 3904 int sleep_tx_count; 3905 3906 spin_lock_bh(&mvmsta->lock); 3907 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3908 struct iwl_mvm_tid_data *tid_data; 3909 u16 n_queued; 3910 3911 tid_data = &mvmsta->tid_data[tid]; 3912 3913 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3914 if (n_queued > remaining) { 3915 more_data = true; 3916 remaining = 0; 3917 break; 3918 } 3919 remaining -= n_queued; 3920 } 3921 sleep_tx_count = cnt - remaining; 3922 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3923 mvmsta->sleep_tx_count = sleep_tx_count; 3924 spin_unlock_bh(&mvmsta->lock); 3925 3926 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3927 if (WARN_ON(cnt - remaining == 0)) { 3928 ieee80211_sta_eosp(sta); 3929 return; 3930 } 3931 } 3932 3933 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3934 if (more_data) 3935 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3936 3937 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3938 mvmsta->next_status_eosp = true; 3939 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3940 } else { 3941 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3942 } 3943 3944 /* block the Tx queues until the FW updated the sleep Tx count */ 3945 iwl_trans_block_txq_ptrs(mvm->trans, true); 3946 3947 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3948 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3949 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3950 if (ret) 3951 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3952 } 3953 3954 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3955 struct iwl_rx_cmd_buffer *rxb) 3956 { 3957 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3958 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3959 struct ieee80211_sta *sta; 3960 u32 sta_id = le32_to_cpu(notif->sta_id); 3961 3962 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3963 return; 3964 3965 rcu_read_lock(); 3966 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3967 if (!IS_ERR_OR_NULL(sta)) 3968 ieee80211_sta_eosp(sta); 3969 rcu_read_unlock(); 3970 } 3971 3972 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3973 struct iwl_mvm_sta *mvmsta, bool disable) 3974 { 3975 struct iwl_mvm_add_sta_cmd cmd = { 3976 .add_modify = STA_MODE_MODIFY, 3977 .sta_id = mvmsta->sta_id, 3978 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3979 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3980 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3981 }; 3982 int ret; 3983 3984 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3985 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3986 if (ret) 3987 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3988 } 3989 3990 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3991 struct ieee80211_sta *sta, 3992 bool disable) 3993 { 3994 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3995 3996 spin_lock_bh(&mvm_sta->lock); 3997 3998 if (mvm_sta->disable_tx == disable) { 3999 spin_unlock_bh(&mvm_sta->lock); 4000 return; 4001 } 4002 4003 mvm_sta->disable_tx = disable; 4004 4005 /* 4006 * If sta PS state is handled by mac80211, tell it to start/stop 4007 * queuing tx for this station. 4008 */ 4009 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4010 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4011 4012 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4013 4014 spin_unlock_bh(&mvm_sta->lock); 4015 } 4016 4017 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4018 struct iwl_mvm_vif *mvmvif, 4019 struct iwl_mvm_int_sta *sta, 4020 bool disable) 4021 { 4022 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4023 struct iwl_mvm_add_sta_cmd cmd = { 4024 .add_modify = STA_MODE_MODIFY, 4025 .sta_id = sta->sta_id, 4026 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4027 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4028 .mac_id_n_color = cpu_to_le32(id), 4029 }; 4030 int ret; 4031 4032 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4033 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4034 if (ret) 4035 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4036 } 4037 4038 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4039 struct iwl_mvm_vif *mvmvif, 4040 bool disable) 4041 { 4042 struct ieee80211_sta *sta; 4043 struct iwl_mvm_sta *mvm_sta; 4044 int i; 4045 4046 rcu_read_lock(); 4047 4048 /* Block/unblock all the stations of the given mvmvif */ 4049 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4050 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4051 if (IS_ERR_OR_NULL(sta)) 4052 continue; 4053 4054 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4055 if (mvm_sta->mac_id_n_color != 4056 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4057 continue; 4058 4059 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4060 } 4061 4062 rcu_read_unlock(); 4063 4064 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4065 return; 4066 4067 /* Need to block/unblock also multicast station */ 4068 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4069 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4070 &mvmvif->mcast_sta, disable); 4071 4072 /* 4073 * Only unblock the broadcast station (FW blocks it for immediate 4074 * quiet, not the driver) 4075 */ 4076 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4077 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4078 &mvmvif->bcast_sta, disable); 4079 } 4080 4081 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4082 { 4083 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4084 struct iwl_mvm_sta *mvmsta; 4085 4086 rcu_read_lock(); 4087 4088 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 4089 4090 if (mvmsta) 4091 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4092 4093 rcu_read_unlock(); 4094 } 4095 4096 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4097 { 4098 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4099 4100 /* 4101 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4102 * to align the wrap around of ssn so we compare relevant values. 4103 */ 4104 if (mvm->trans->trans_cfg->gen2) 4105 sn &= 0xff; 4106 4107 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4108 } 4109 4110 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4111 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4112 u8 *key, u32 key_len) 4113 { 4114 int ret; 4115 u16 queue; 4116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4117 struct ieee80211_key_conf *keyconf; 4118 4119 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4120 NL80211_IFTYPE_UNSPECIFIED, 4121 IWL_STA_LINK); 4122 if (ret) 4123 return ret; 4124 4125 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4126 addr, sta, &queue, 4127 IWL_MVM_TX_FIFO_BE); 4128 if (ret) 4129 goto out; 4130 4131 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4132 if (!keyconf) { 4133 ret = -ENOBUFS; 4134 goto out; 4135 } 4136 4137 keyconf->cipher = cipher; 4138 memcpy(keyconf->key, key, key_len); 4139 keyconf->keylen = key_len; 4140 4141 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4142 0, NULL, 0, 0, true); 4143 kfree(keyconf); 4144 return 0; 4145 out: 4146 iwl_mvm_dealloc_int_sta(mvm, sta); 4147 return ret; 4148 } 4149 4150 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4151 struct ieee80211_vif *vif, 4152 u32 mac_id) 4153 { 4154 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4155 .mac_id = cpu_to_le32(mac_id), 4156 }; 4157 int ret; 4158 4159 ret = iwl_mvm_send_cmd_pdu(mvm, 4160 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4161 CMD_ASYNC, 4162 sizeof(cancel_channel_switch_cmd), 4163 &cancel_channel_switch_cmd); 4164 if (ret) 4165 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4166 } 4167