1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2025 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 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 28 { 29 int sta_id; 30 u32 reserved_ids = 0; 31 32 BUILD_BUG_ON(IWL_STATION_COUNT_MAX > 32); 33 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 34 35 lockdep_assert_held(&mvm->mutex); 36 37 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 38 if (iftype != NL80211_IFTYPE_STATION) 39 reserved_ids = BIT(0); 40 41 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 42 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 43 if (BIT(sta_id) & reserved_ids) 44 continue; 45 46 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 47 lockdep_is_held(&mvm->mutex))) 48 return sta_id; 49 } 50 return IWL_INVALID_STA; 51 } 52 53 /* Calculate the ampdu density and max size */ 54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 55 struct ieee80211_bss_conf *link_conf, 56 u32 *_agg_size) 57 { 58 u32 agg_size = 0, mpdu_dens = 0; 59 60 if (WARN_ON(!link_sta)) 61 return 0; 62 63 /* Note that we always use only legacy & highest supported PPDUs, so 64 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating 65 * the maximum A-MPDU size of various PPDU types in different bands, 66 * we only need to worry about the highest supported PPDU type here. 67 */ 68 69 if (link_sta->ht_cap.ht_supported) { 70 agg_size = link_sta->ht_cap.ampdu_factor; 71 mpdu_dens = link_sta->ht_cap.ampdu_density; 72 } 73 74 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) { 75 /* overwrite HT values on 6 GHz */ 76 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 77 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 78 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 79 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 80 } else if (link_sta->vht_cap.vht_supported) { 81 /* if VHT supported overwrite HT value */ 82 agg_size = u32_get_bits(link_sta->vht_cap.cap, 83 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); 84 } 85 86 /* D6.0 10.12.2 A-MPDU length limit rules 87 * A STA indicates the maximum length of the A-MPDU preEOF padding 88 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 89 * Exponent field in its HT Capabilities, VHT Capabilities, 90 * and HE 6 GHz Band Capabilities elements (if present) and the 91 * Maximum AMPDU Length Exponent Extension field in its HE 92 * Capabilities element 93 */ 94 if (link_sta->he_cap.has_he) 95 agg_size += 96 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 97 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 98 99 if (link_sta->eht_cap.has_eht) 100 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], 101 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); 102 103 /* Limit to max A-MPDU supported by FW */ 104 agg_size = min_t(u32, agg_size, 105 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); 106 107 *_agg_size = agg_size; 108 return mpdu_dens; 109 } 110 111 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 112 { 113 u8 uapsd_acs = 0; 114 115 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 116 uapsd_acs |= BIT(AC_BK); 117 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 118 uapsd_acs |= BIT(AC_BE); 119 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 120 uapsd_acs |= BIT(AC_VI); 121 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 122 uapsd_acs |= BIT(AC_VO); 123 124 return uapsd_acs | uapsd_acs << 4; 125 } 126 127 /* send station add/update command to firmware */ 128 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 129 bool update, unsigned int flags) 130 { 131 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 132 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 133 .sta_id = mvm_sta->deflink.sta_id, 134 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 135 .add_modify = update ? 1 : 0, 136 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 137 STA_FLG_MIMO_EN_MSK | 138 STA_FLG_RTS_MIMO_PROT), 139 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 140 }; 141 int ret; 142 u32 status; 143 u32 agg_size = 0, mpdu_dens = 0; 144 145 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 146 add_sta_cmd.station_type = mvm_sta->sta_type; 147 148 if (!update || (flags & STA_MODIFY_QUEUES)) { 149 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 150 151 if (!iwl_mvm_has_new_tx_api(mvm)) { 152 add_sta_cmd.tfd_queue_msk = 153 cpu_to_le32(mvm_sta->tfd_queue_msk); 154 155 if (flags & STA_MODIFY_QUEUES) 156 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 157 } else { 158 WARN_ON(flags & STA_MODIFY_QUEUES); 159 } 160 } 161 162 switch (sta->deflink.bandwidth) { 163 case IEEE80211_STA_RX_BW_320: 164 case IEEE80211_STA_RX_BW_160: 165 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 166 fallthrough; 167 case IEEE80211_STA_RX_BW_80: 168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 169 fallthrough; 170 case IEEE80211_STA_RX_BW_40: 171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 172 fallthrough; 173 case IEEE80211_STA_RX_BW_20: 174 if (sta->deflink.ht_cap.ht_supported) 175 add_sta_cmd.station_flags |= 176 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 177 break; 178 } 179 180 switch (sta->deflink.rx_nss) { 181 case 1: 182 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 183 break; 184 case 2: 185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 186 break; 187 case 3 ... 8: 188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 189 break; 190 } 191 192 switch (sta->deflink.smps_mode) { 193 case IEEE80211_SMPS_AUTOMATIC: 194 case IEEE80211_SMPS_NUM_MODES: 195 WARN_ON(1); 196 break; 197 case IEEE80211_SMPS_STATIC: 198 /* override NSS */ 199 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 200 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 201 break; 202 case IEEE80211_SMPS_DYNAMIC: 203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 204 break; 205 case IEEE80211_SMPS_OFF: 206 /* nothing */ 207 break; 208 } 209 210 if (sta->deflink.ht_cap.ht_supported || 211 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ) 212 add_sta_cmd.station_flags_msk |= 213 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 214 STA_FLG_AGG_MPDU_DENS_MSK); 215 216 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 217 &mvm_sta->vif->bss_conf, 218 &agg_size); 219 add_sta_cmd.station_flags |= 220 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 221 add_sta_cmd.station_flags |= 222 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 223 224 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 225 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 226 227 if (sta->wme) { 228 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 229 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 230 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 231 } 232 233 status = ADD_STA_SUCCESS; 234 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 235 iwl_mvm_add_sta_cmd_size(mvm), 236 &add_sta_cmd, &status); 237 if (ret) 238 return ret; 239 240 switch (status & IWL_ADD_STA_STATUS_MASK) { 241 case ADD_STA_SUCCESS: 242 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 243 break; 244 default: 245 ret = -EIO; 246 IWL_ERR(mvm, "ADD_STA failed\n"); 247 break; 248 } 249 250 return ret; 251 } 252 253 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 254 { 255 struct iwl_mvm_baid_data *data = 256 timer_container_of(data, t, session_timer); 257 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 258 struct iwl_mvm_baid_data *ba_data; 259 struct ieee80211_sta *sta; 260 struct iwl_mvm_sta *mvm_sta; 261 unsigned long timeout; 262 unsigned int sta_id; 263 264 rcu_read_lock(); 265 266 ba_data = rcu_dereference(*rcu_ptr); 267 268 if (WARN_ON(!ba_data)) 269 goto unlock; 270 271 if (!ba_data->timeout) 272 goto unlock; 273 274 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 275 if (time_is_after_jiffies(timeout)) { 276 mod_timer(&ba_data->session_timer, timeout); 277 goto unlock; 278 } 279 280 /* Timer expired */ 281 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 282 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 283 284 /* 285 * sta should be valid unless the following happens: 286 * The firmware asserts which triggers a reconfig flow, but 287 * the reconfig fails before we set the pointer to sta into 288 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 289 * A-MDPU and hence the timer continues to run. Then, the 290 * timer expires and sta is NULL. 291 */ 292 if (IS_ERR_OR_NULL(sta)) 293 goto unlock; 294 295 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 296 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 297 sta->addr, ba_data->tid); 298 unlock: 299 rcu_read_unlock(); 300 } 301 302 /* Disable aggregations for a bitmap of TIDs for a given station */ 303 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 304 unsigned long disable_agg_tids, 305 bool remove_queue) 306 { 307 struct iwl_mvm_add_sta_cmd cmd = {}; 308 struct ieee80211_sta *sta; 309 struct iwl_mvm_sta *mvmsta; 310 u32 status; 311 u8 sta_id; 312 313 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 314 return -EINVAL; 315 316 sta_id = mvm->queue_info[queue].ra_sta_id; 317 318 rcu_read_lock(); 319 320 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 321 322 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 323 rcu_read_unlock(); 324 return -EINVAL; 325 } 326 327 mvmsta = iwl_mvm_sta_from_mac80211(sta); 328 329 mvmsta->tid_disable_agg |= disable_agg_tids; 330 331 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 332 cmd.sta_id = mvmsta->deflink.sta_id; 333 cmd.add_modify = STA_MODE_MODIFY; 334 cmd.modify_mask = STA_MODIFY_QUEUES; 335 if (disable_agg_tids) 336 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 337 if (remove_queue) 338 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 339 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 340 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 341 342 rcu_read_unlock(); 343 344 /* Notify FW of queue removal from the STA queues */ 345 status = ADD_STA_SUCCESS; 346 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 347 iwl_mvm_add_sta_cmd_size(mvm), 348 &cmd, &status); 349 } 350 351 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 352 int sta_id, u16 *queueptr, u8 tid) 353 { 354 int queue = *queueptr; 355 struct iwl_scd_txq_cfg_cmd cmd = { 356 .scd_queue = queue, 357 .action = SCD_CFG_DISABLE_QUEUE, 358 }; 359 int ret; 360 361 lockdep_assert_held(&mvm->mutex); 362 363 if (iwl_mvm_has_new_tx_api(mvm)) { 364 if (mvm->sta_remove_requires_queue_remove) { 365 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 366 SCD_QUEUE_CONFIG_CMD); 367 struct iwl_scd_queue_cfg_cmd remove_cmd = { 368 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 369 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 370 }; 371 372 if (tid == IWL_MAX_TID_COUNT) 373 tid = IWL_MGMT_TID; 374 375 remove_cmd.u.remove.tid = cpu_to_le32(tid); 376 377 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 378 sizeof(remove_cmd), 379 &remove_cmd); 380 } else { 381 ret = 0; 382 } 383 384 iwl_trans_txq_free(mvm->trans, queue); 385 *queueptr = IWL_MVM_INVALID_QUEUE; 386 387 return ret; 388 } 389 390 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 391 return 0; 392 393 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 394 395 cmd.action = mvm->queue_info[queue].tid_bitmap ? 396 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 397 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 398 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 399 400 IWL_DEBUG_TX_QUEUES(mvm, 401 "Disabling TXQ #%d tids=0x%x\n", 402 queue, 403 mvm->queue_info[queue].tid_bitmap); 404 405 /* If the queue is still enabled - nothing left to do in this func */ 406 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 407 return 0; 408 409 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 410 cmd.tid = mvm->queue_info[queue].txq_tid; 411 412 /* Make sure queue info is correct even though we overwrite it */ 413 WARN(mvm->queue_info[queue].tid_bitmap, 414 "TXQ #%d info out-of-sync - tids=0x%x\n", 415 queue, mvm->queue_info[queue].tid_bitmap); 416 417 /* If we are here - the queue is freed and we can zero out these vals */ 418 mvm->queue_info[queue].tid_bitmap = 0; 419 420 if (sta) { 421 struct iwl_mvm_txq *mvmtxq = 422 iwl_mvm_txq_from_tid(sta, tid); 423 424 spin_lock_bh(&mvm->add_stream_lock); 425 list_del_init(&mvmtxq->list); 426 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 427 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 428 spin_unlock_bh(&mvm->add_stream_lock); 429 } 430 431 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 432 mvm->queue_info[queue].reserved = false; 433 434 iwl_trans_txq_disable(mvm->trans, queue, false); 435 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 436 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 437 438 if (ret) 439 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 440 queue, ret); 441 return ret; 442 } 443 444 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 445 { 446 struct ieee80211_sta *sta; 447 struct iwl_mvm_sta *mvmsta; 448 unsigned long tid_bitmap; 449 unsigned long agg_tids = 0; 450 u8 sta_id; 451 int tid; 452 453 lockdep_assert_held(&mvm->mutex); 454 455 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 456 return -EINVAL; 457 458 sta_id = mvm->queue_info[queue].ra_sta_id; 459 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 460 461 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 462 lockdep_is_held(&mvm->mutex)); 463 464 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 465 return -EINVAL; 466 467 mvmsta = iwl_mvm_sta_from_mac80211(sta); 468 469 spin_lock_bh(&mvmsta->lock); 470 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 471 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 472 agg_tids |= BIT(tid); 473 } 474 spin_unlock_bh(&mvmsta->lock); 475 476 return agg_tids; 477 } 478 479 /* 480 * Remove a queue from a station's resources. 481 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 482 * doesn't disable the queue 483 */ 484 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 485 { 486 struct ieee80211_sta *sta; 487 struct iwl_mvm_sta *mvmsta; 488 unsigned long tid_bitmap; 489 unsigned long disable_agg_tids = 0; 490 u8 sta_id; 491 int tid; 492 493 lockdep_assert_held(&mvm->mutex); 494 495 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 496 return -EINVAL; 497 498 sta_id = mvm->queue_info[queue].ra_sta_id; 499 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 500 501 rcu_read_lock(); 502 503 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 504 505 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 506 rcu_read_unlock(); 507 return 0; 508 } 509 510 mvmsta = iwl_mvm_sta_from_mac80211(sta); 511 512 spin_lock_bh(&mvmsta->lock); 513 /* Unmap MAC queues and TIDs from this queue */ 514 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 515 struct iwl_mvm_txq *mvmtxq = 516 iwl_mvm_txq_from_tid(sta, tid); 517 518 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 519 disable_agg_tids |= BIT(tid); 520 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 521 522 spin_lock_bh(&mvm->add_stream_lock); 523 list_del_init(&mvmtxq->list); 524 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 525 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 526 spin_unlock_bh(&mvm->add_stream_lock); 527 } 528 529 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 530 spin_unlock_bh(&mvmsta->lock); 531 532 rcu_read_unlock(); 533 534 /* 535 * The TX path may have been using this TXQ_ID from the tid_data, 536 * so make sure it's no longer running so that we can safely reuse 537 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 538 * above, but nothing guarantees we've stopped using them. Thus, 539 * without this, we could get to iwl_mvm_disable_txq() and remove 540 * the queue while still sending frames to it. 541 */ 542 synchronize_net(); 543 544 return disable_agg_tids; 545 } 546 547 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 548 struct ieee80211_sta *old_sta, 549 u8 new_sta_id) 550 { 551 struct iwl_mvm_sta *mvmsta; 552 u8 sta_id, tid; 553 unsigned long disable_agg_tids = 0; 554 bool same_sta; 555 u16 queue_tmp = queue; 556 int ret; 557 558 lockdep_assert_held(&mvm->mutex); 559 560 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 561 return -EINVAL; 562 563 sta_id = mvm->queue_info[queue].ra_sta_id; 564 tid = mvm->queue_info[queue].txq_tid; 565 566 same_sta = sta_id == new_sta_id; 567 568 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 569 if (WARN_ON(!mvmsta)) 570 return -EINVAL; 571 572 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 573 /* Disable the queue */ 574 if (disable_agg_tids) 575 iwl_mvm_invalidate_sta_queue(mvm, queue, 576 disable_agg_tids, false); 577 578 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 579 if (ret) { 580 IWL_ERR(mvm, 581 "Failed to free inactive queue %d (ret=%d)\n", 582 queue, ret); 583 584 return ret; 585 } 586 587 /* If TXQ is allocated to another STA, update removal in FW */ 588 if (!same_sta) 589 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 590 591 return 0; 592 } 593 594 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 595 unsigned long tfd_queue_mask, u8 ac) 596 { 597 int queue = 0; 598 u8 ac_to_queue[IEEE80211_NUM_ACS]; 599 int i; 600 601 /* 602 * This protects us against grabbing a queue that's being reconfigured 603 * by the inactivity checker. 604 */ 605 lockdep_assert_held(&mvm->mutex); 606 607 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 608 return -EINVAL; 609 610 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 611 612 /* See what ACs the existing queues for this STA have */ 613 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 614 /* Only DATA queues can be shared */ 615 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 616 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 617 continue; 618 619 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 620 } 621 622 /* 623 * The queue to share is chosen only from DATA queues as follows (in 624 * descending priority): 625 * 1. An AC_BE queue 626 * 2. Same AC queue 627 * 3. Highest AC queue that is lower than new AC 628 * 4. Any existing AC (there always is at least 1 DATA queue) 629 */ 630 631 /* Priority 1: An AC_BE queue */ 632 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 633 queue = ac_to_queue[IEEE80211_AC_BE]; 634 /* Priority 2: Same AC queue */ 635 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 636 queue = ac_to_queue[ac]; 637 /* Priority 3a: If new AC is VO and VI exists - use VI */ 638 else if (ac == IEEE80211_AC_VO && 639 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 640 queue = ac_to_queue[IEEE80211_AC_VI]; 641 /* Priority 3b: No BE so only AC less than the new one is BK */ 642 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 643 queue = ac_to_queue[IEEE80211_AC_BK]; 644 /* Priority 4a: No BE nor BK - use VI if exists */ 645 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 646 queue = ac_to_queue[IEEE80211_AC_VI]; 647 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 648 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 649 queue = ac_to_queue[IEEE80211_AC_VO]; 650 651 /* Make sure queue found (or not) is legal */ 652 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 653 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 654 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 655 IWL_ERR(mvm, "No DATA queues available to share\n"); 656 return -ENOSPC; 657 } 658 659 return queue; 660 } 661 662 /* Re-configure the SCD for a queue that has already been configured */ 663 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 664 int sta_id, int tid, int frame_limit, u16 ssn) 665 { 666 struct iwl_scd_txq_cfg_cmd cmd = { 667 .scd_queue = queue, 668 .action = SCD_CFG_ENABLE_QUEUE, 669 .window = frame_limit, 670 .sta_id = sta_id, 671 .ssn = cpu_to_le16(ssn), 672 .tx_fifo = fifo, 673 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 674 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 675 .tid = tid, 676 }; 677 int ret; 678 679 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 680 return -EINVAL; 681 682 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 683 "Trying to reconfig unallocated queue %d\n", queue)) 684 return -ENXIO; 685 686 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 687 688 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 689 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 690 queue, fifo, ret); 691 692 return ret; 693 } 694 695 /* 696 * If a given queue has a higher AC than the TID stream that is being compared 697 * to, the queue needs to be redirected to the lower AC. This function does that 698 * in such a case, otherwise - if no redirection required - it does nothing, 699 * unless the %force param is true. 700 */ 701 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 702 int ac, int ssn, unsigned int wdg_timeout, 703 bool force, struct iwl_mvm_txq *txq) 704 { 705 struct iwl_scd_txq_cfg_cmd cmd = { 706 .scd_queue = queue, 707 .action = SCD_CFG_DISABLE_QUEUE, 708 }; 709 bool shared_queue; 710 int ret; 711 712 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 713 return -EINVAL; 714 715 /* 716 * If the AC is lower than current one - FIFO needs to be redirected to 717 * the lowest one of the streams in the queue. Check if this is needed 718 * here. 719 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 720 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 721 * we need to check if the numerical value of X is LARGER than of Y. 722 */ 723 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 724 IWL_DEBUG_TX_QUEUES(mvm, 725 "No redirection needed on TXQ #%d\n", 726 queue); 727 return 0; 728 } 729 730 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 731 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 732 cmd.tid = mvm->queue_info[queue].txq_tid; 733 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 734 735 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 736 queue, iwl_mvm_ac_to_tx_fifo[ac]); 737 738 /* Stop the queue and wait for it to empty */ 739 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 740 741 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 742 if (ret) { 743 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 744 queue); 745 ret = -EIO; 746 goto out; 747 } 748 749 /* Before redirecting the queue we need to de-activate it */ 750 iwl_trans_txq_disable(mvm->trans, queue, false); 751 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 752 if (ret) 753 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 754 ret); 755 756 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 757 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 758 759 /* Update the TID "owner" of the queue */ 760 mvm->queue_info[queue].txq_tid = tid; 761 762 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 763 764 /* Redirect to lower AC */ 765 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 766 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 767 768 /* Update AC marking of the queue */ 769 mvm->queue_info[queue].mac80211_ac = ac; 770 771 /* 772 * Mark queue as shared in transport if shared 773 * Note this has to be done after queue enablement because enablement 774 * can also set this value, and there is no indication there to shared 775 * queues 776 */ 777 if (shared_queue) 778 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 779 780 out: 781 /* Continue using the queue */ 782 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 783 784 return ret; 785 } 786 787 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 788 u8 minq, u8 maxq) 789 { 790 int i; 791 792 lockdep_assert_held(&mvm->mutex); 793 794 if (WARN(maxq >= mvm->trans->mac_cfg->base->num_of_queues, 795 "max queue %d >= num_of_queues (%d)", maxq, 796 mvm->trans->mac_cfg->base->num_of_queues)) 797 maxq = mvm->trans->mac_cfg->base->num_of_queues - 1; 798 799 /* This should not be hit with new TX path */ 800 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 801 return -ENOSPC; 802 803 /* Start by looking for a free queue */ 804 for (i = minq; i <= maxq; i++) 805 if (mvm->queue_info[i].tid_bitmap == 0 && 806 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 807 return i; 808 809 return -ENOSPC; 810 } 811 812 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 813 { 814 int max_size = IWL_DEFAULT_QUEUE_SIZE; 815 unsigned int link_id; 816 817 /* this queue isn't used for traffic (cab_queue) */ 818 if (!sta) 819 return IWL_MGMT_QUEUE_SIZE; 820 821 rcu_read_lock(); 822 823 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 824 struct ieee80211_link_sta *link = 825 rcu_dereference(sta->link[link_id]); 826 827 if (!link) 828 continue; 829 830 /* support for 512 ba size */ 831 if (link->eht_cap.has_eht && 832 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 833 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 834 835 /* support for 256 ba size */ 836 if (link->he_cap.has_he && 837 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 838 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 839 } 840 841 rcu_read_unlock(); 842 return max_size; 843 } 844 845 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 846 struct ieee80211_sta *sta, 847 u8 sta_id, u8 tid, unsigned int timeout) 848 { 849 int queue, size; 850 u32 sta_mask = 0; 851 852 if (tid == IWL_MAX_TID_COUNT) { 853 tid = IWL_MGMT_TID; 854 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 855 mvm->trans->mac_cfg->base->min_txq_size); 856 } else { 857 size = iwl_mvm_get_queue_size(sta); 858 } 859 860 if (sta) { 861 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 862 struct ieee80211_link_sta *link_sta; 863 unsigned int link_id; 864 865 rcu_read_lock(); 866 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) { 867 struct iwl_mvm_link_sta *link = 868 rcu_dereference_protected(mvmsta->link[link_id], 869 lockdep_is_held(&mvm->mutex)); 870 871 if (!link) 872 continue; 873 874 sta_mask |= BIT(link->sta_id); 875 } 876 rcu_read_unlock(); 877 } else { 878 sta_mask |= BIT(sta_id); 879 } 880 881 if (!sta_mask) 882 return -EINVAL; 883 884 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 885 tid, size, timeout); 886 887 if (queue >= 0) 888 IWL_DEBUG_TX_QUEUES(mvm, 889 "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 890 queue, sta_mask, tid); 891 892 return queue; 893 } 894 895 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 896 struct ieee80211_sta *sta, u8 ac, 897 int tid) 898 { 899 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 900 struct iwl_mvm_txq *mvmtxq = 901 iwl_mvm_txq_from_tid(sta, tid); 902 unsigned int wdg_timeout = 903 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 904 int queue = -1; 905 906 lockdep_assert_held(&mvm->mutex); 907 908 IWL_DEBUG_TX_QUEUES(mvm, 909 "Allocating queue for sta %d on tid %d\n", 910 mvmsta->deflink.sta_id, tid); 911 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 912 tid, wdg_timeout); 913 if (queue < 0) 914 return queue; 915 916 mvmtxq->txq_id = queue; 917 mvm->tvqm_info[queue].txq_tid = tid; 918 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 919 920 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 921 922 spin_lock_bh(&mvmsta->lock); 923 mvmsta->tid_data[tid].txq_id = queue; 924 spin_unlock_bh(&mvmsta->lock); 925 926 return 0; 927 } 928 929 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 930 struct ieee80211_sta *sta, 931 int queue, u8 sta_id, u8 tid) 932 { 933 bool enable_queue = true; 934 935 /* Make sure this TID isn't already enabled */ 936 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 937 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 938 queue, tid); 939 return false; 940 } 941 942 /* Update mappings and refcounts */ 943 if (mvm->queue_info[queue].tid_bitmap) 944 enable_queue = false; 945 946 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 947 mvm->queue_info[queue].ra_sta_id = sta_id; 948 949 if (enable_queue) { 950 if (tid != IWL_MAX_TID_COUNT) 951 mvm->queue_info[queue].mac80211_ac = 952 tid_to_mac80211_ac[tid]; 953 else 954 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 955 956 mvm->queue_info[queue].txq_tid = tid; 957 } 958 959 if (sta) { 960 struct iwl_mvm_txq *mvmtxq = 961 iwl_mvm_txq_from_tid(sta, tid); 962 963 mvmtxq->txq_id = queue; 964 } 965 966 IWL_DEBUG_TX_QUEUES(mvm, 967 "Enabling TXQ #%d tids=0x%x\n", 968 queue, mvm->queue_info[queue].tid_bitmap); 969 970 return enable_queue; 971 } 972 973 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 974 int queue, u16 ssn, 975 const struct iwl_trans_txq_scd_cfg *cfg, 976 unsigned int wdg_timeout) 977 { 978 struct iwl_scd_txq_cfg_cmd cmd = { 979 .scd_queue = queue, 980 .action = SCD_CFG_ENABLE_QUEUE, 981 .window = cfg->frame_limit, 982 .sta_id = cfg->sta_id, 983 .ssn = cpu_to_le16(ssn), 984 .tx_fifo = cfg->fifo, 985 .aggregate = cfg->aggregate, 986 .tid = cfg->tid, 987 }; 988 bool inc_ssn; 989 990 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 991 return false; 992 993 /* Send the enabling command if we need to */ 994 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 995 return false; 996 997 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 998 NULL, wdg_timeout); 999 if (inc_ssn) 1000 le16_add_cpu(&cmd.ssn, 1); 1001 1002 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1003 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1004 1005 return inc_ssn; 1006 } 1007 1008 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1009 { 1010 struct iwl_scd_txq_cfg_cmd cmd = { 1011 .scd_queue = queue, 1012 .action = SCD_CFG_UPDATE_QUEUE_TID, 1013 }; 1014 int tid; 1015 unsigned long tid_bitmap; 1016 int ret; 1017 1018 lockdep_assert_held(&mvm->mutex); 1019 1020 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1021 return; 1022 1023 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1024 1025 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1026 return; 1027 1028 /* Find any TID for queue */ 1029 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1030 cmd.tid = tid; 1031 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1032 1033 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1034 if (ret) { 1035 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1036 queue, ret); 1037 return; 1038 } 1039 1040 mvm->queue_info[queue].txq_tid = tid; 1041 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1042 queue, tid); 1043 } 1044 1045 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1046 { 1047 struct ieee80211_sta *sta; 1048 struct iwl_mvm_sta *mvmsta; 1049 u8 sta_id; 1050 int tid = -1; 1051 unsigned long tid_bitmap; 1052 unsigned int wdg_timeout; 1053 int ssn; 1054 int ret = true; 1055 1056 /* queue sharing is disabled on new TX path */ 1057 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1058 return; 1059 1060 lockdep_assert_held(&mvm->mutex); 1061 1062 sta_id = mvm->queue_info[queue].ra_sta_id; 1063 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1064 1065 /* Find TID for queue, and make sure it is the only one on the queue */ 1066 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1067 if (tid_bitmap != BIT(tid)) { 1068 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1069 queue, tid_bitmap); 1070 return; 1071 } 1072 1073 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1074 tid); 1075 1076 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1077 lockdep_is_held(&mvm->mutex)); 1078 1079 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1080 return; 1081 1082 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1083 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 1084 1085 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1086 1087 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1088 tid_to_mac80211_ac[tid], ssn, 1089 wdg_timeout, true, 1090 iwl_mvm_txq_from_tid(sta, tid)); 1091 if (ret) { 1092 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1093 return; 1094 } 1095 1096 /* If aggs should be turned back on - do it */ 1097 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1098 struct iwl_mvm_add_sta_cmd cmd = {0}; 1099 1100 mvmsta->tid_disable_agg &= ~BIT(tid); 1101 1102 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1103 cmd.sta_id = mvmsta->deflink.sta_id; 1104 cmd.add_modify = STA_MODE_MODIFY; 1105 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1106 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1107 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1108 1109 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1110 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1111 if (!ret) { 1112 IWL_DEBUG_TX_QUEUES(mvm, 1113 "TXQ #%d is now aggregated again\n", 1114 queue); 1115 1116 /* Mark queue intenally as aggregating again */ 1117 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1118 } 1119 } 1120 1121 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1122 } 1123 1124 /* 1125 * Remove inactive TIDs of a given queue. 1126 * If all queue TIDs are inactive - mark the queue as inactive 1127 * If only some the queue TIDs are inactive - unmap them from the queue 1128 * 1129 * Returns %true if all TIDs were removed and the queue could be reused. 1130 */ 1131 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1132 struct iwl_mvm_sta *mvmsta, int queue, 1133 unsigned long tid_bitmap, 1134 unsigned long *unshare_queues, 1135 unsigned long *changetid_queues) 1136 { 1137 unsigned int tid; 1138 1139 lockdep_assert_held(&mvmsta->lock); 1140 lockdep_assert_held(&mvm->mutex); 1141 1142 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1143 return false; 1144 1145 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1146 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1147 /* If some TFDs are still queued - don't mark TID as inactive */ 1148 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1149 tid_bitmap &= ~BIT(tid); 1150 1151 /* Don't mark as inactive any TID that has an active BA */ 1152 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1153 tid_bitmap &= ~BIT(tid); 1154 } 1155 1156 /* If all TIDs in the queue are inactive - return it can be reused */ 1157 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1158 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1159 return true; 1160 } 1161 1162 /* 1163 * If we are here, this is a shared queue and not all TIDs timed-out. 1164 * Remove the ones that did. 1165 */ 1166 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1167 u16 q_tid_bitmap; 1168 1169 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1170 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1171 1172 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1173 1174 /* 1175 * We need to take into account a situation in which a TXQ was 1176 * allocated to TID x, and then turned shared by adding TIDs y 1177 * and z. If TID x becomes inactive and is removed from the TXQ, 1178 * ownership must be given to one of the remaining TIDs. 1179 * This is mainly because if TID x continues - a new queue can't 1180 * be allocated for it as long as it is an owner of another TXQ. 1181 * 1182 * Mark this queue in the right bitmap, we'll send the command 1183 * to the firmware later. 1184 */ 1185 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1186 set_bit(queue, changetid_queues); 1187 1188 IWL_DEBUG_TX_QUEUES(mvm, 1189 "Removing inactive TID %d from shared Q:%d\n", 1190 tid, queue); 1191 } 1192 1193 IWL_DEBUG_TX_QUEUES(mvm, 1194 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1195 mvm->queue_info[queue].tid_bitmap); 1196 1197 /* 1198 * There may be different TIDs with the same mac queues, so make 1199 * sure all TIDs have existing corresponding mac queues enabled 1200 */ 1201 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1202 1203 /* If the queue is marked as shared - "unshare" it */ 1204 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1205 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1206 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1207 queue); 1208 set_bit(queue, unshare_queues); 1209 } 1210 1211 return false; 1212 } 1213 1214 /* 1215 * Check for inactivity - this includes checking if any queue 1216 * can be unshared and finding one (and only one) that can be 1217 * reused. 1218 * This function is also invoked as a sort of clean-up task, 1219 * in which case @alloc_for_sta is IWL_INVALID_STA. 1220 * 1221 * Returns the queue number, or -ENOSPC. 1222 */ 1223 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1224 { 1225 unsigned long now = jiffies; 1226 unsigned long unshare_queues = 0; 1227 unsigned long changetid_queues = 0; 1228 int i, ret, free_queue = -ENOSPC; 1229 struct ieee80211_sta *queue_owner = NULL; 1230 1231 lockdep_assert_held(&mvm->mutex); 1232 1233 if (iwl_mvm_has_new_tx_api(mvm)) 1234 return -ENOSPC; 1235 1236 rcu_read_lock(); 1237 1238 /* we skip the CMD queue below by starting at 1 */ 1239 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1240 1241 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1242 struct ieee80211_sta *sta; 1243 struct iwl_mvm_sta *mvmsta; 1244 u8 sta_id; 1245 int tid; 1246 unsigned long inactive_tid_bitmap = 0; 1247 unsigned long queue_tid_bitmap; 1248 1249 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1250 if (!queue_tid_bitmap) 1251 continue; 1252 1253 /* If TXQ isn't in active use anyway - nothing to do here... */ 1254 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1255 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1256 continue; 1257 1258 /* Check to see if there are inactive TIDs on this queue */ 1259 for_each_set_bit(tid, &queue_tid_bitmap, 1260 IWL_MAX_TID_COUNT + 1) { 1261 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1262 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1263 continue; 1264 1265 inactive_tid_bitmap |= BIT(tid); 1266 } 1267 1268 /* If all TIDs are active - finish check on this queue */ 1269 if (!inactive_tid_bitmap) 1270 continue; 1271 1272 /* 1273 * If we are here - the queue hadn't been served recently and is 1274 * in use 1275 */ 1276 1277 sta_id = mvm->queue_info[i].ra_sta_id; 1278 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1279 1280 /* 1281 * If the STA doesn't exist anymore, it isn't an error. It could 1282 * be that it was removed since getting the queues, and in this 1283 * case it should've inactivated its queues anyway. 1284 */ 1285 if (IS_ERR_OR_NULL(sta)) 1286 continue; 1287 1288 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1289 1290 spin_lock_bh(&mvmsta->lock); 1291 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1292 inactive_tid_bitmap, 1293 &unshare_queues, 1294 &changetid_queues); 1295 if (ret && free_queue < 0) { 1296 queue_owner = sta; 1297 free_queue = i; 1298 } 1299 /* only unlock sta lock - we still need the queue info lock */ 1300 spin_unlock_bh(&mvmsta->lock); 1301 } 1302 1303 1304 /* Reconfigure queues requiring reconfiguation */ 1305 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1306 iwl_mvm_unshare_queue(mvm, i); 1307 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1308 iwl_mvm_change_queue_tid(mvm, i); 1309 1310 rcu_read_unlock(); 1311 1312 if (free_queue >= 0 && alloc_for_sta != IWL_INVALID_STA) { 1313 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1314 alloc_for_sta); 1315 if (ret) 1316 return ret; 1317 } 1318 1319 return free_queue; 1320 } 1321 1322 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1323 struct ieee80211_sta *sta, u8 ac, int tid) 1324 { 1325 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1326 struct iwl_trans_txq_scd_cfg cfg = { 1327 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1328 .sta_id = mvmsta->deflink.sta_id, 1329 .tid = tid, 1330 .frame_limit = IWL_FRAME_LIMIT, 1331 }; 1332 unsigned int wdg_timeout = 1333 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 1334 int queue = -1; 1335 u16 queue_tmp; 1336 unsigned long disable_agg_tids = 0; 1337 enum iwl_mvm_agg_state queue_state; 1338 bool shared_queue = false, inc_ssn; 1339 int ssn; 1340 unsigned long tfd_queue_mask; 1341 int ret; 1342 1343 lockdep_assert_held(&mvm->mutex); 1344 1345 if (iwl_mvm_has_new_tx_api(mvm)) 1346 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1347 1348 spin_lock_bh(&mvmsta->lock); 1349 tfd_queue_mask = mvmsta->tfd_queue_msk; 1350 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1351 spin_unlock_bh(&mvmsta->lock); 1352 1353 if (tid == IWL_MAX_TID_COUNT) { 1354 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1355 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1356 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1357 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1358 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1359 queue); 1360 1361 /* If no such queue is found, we'll use a DATA queue instead */ 1362 } 1363 1364 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1365 (mvm->queue_info[mvmsta->reserved_queue].status == 1366 IWL_MVM_QUEUE_RESERVED)) { 1367 queue = mvmsta->reserved_queue; 1368 mvm->queue_info[queue].reserved = true; 1369 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1370 } 1371 1372 if (queue < 0) 1373 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1374 IWL_MVM_DQA_MIN_DATA_QUEUE, 1375 IWL_MVM_DQA_MAX_DATA_QUEUE); 1376 if (queue < 0) { 1377 /* try harder - perhaps kill an inactive queue */ 1378 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1379 } 1380 1381 /* No free queue - we'll have to share */ 1382 if (queue <= 0) { 1383 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1384 if (queue > 0) { 1385 shared_queue = true; 1386 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1387 } 1388 } 1389 1390 /* 1391 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1392 * to make sure no one else takes it. 1393 * This will allow avoiding re-acquiring the lock at the end of the 1394 * configuration. On error we'll mark it back as free. 1395 */ 1396 if (queue > 0 && !shared_queue) 1397 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1398 1399 /* This shouldn't happen - out of queues */ 1400 if (WARN_ON(queue <= 0)) { 1401 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1402 tid, cfg.sta_id); 1403 return queue; 1404 } 1405 1406 /* 1407 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1408 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1409 * as aggregatable. 1410 * Mark all DATA queues as allowing to be aggregated at some point 1411 */ 1412 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1413 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1414 1415 IWL_DEBUG_TX_QUEUES(mvm, 1416 "Allocating %squeue #%d to sta %d on tid %d\n", 1417 shared_queue ? "shared " : "", queue, 1418 mvmsta->deflink.sta_id, tid); 1419 1420 if (shared_queue) { 1421 /* Disable any open aggs on this queue */ 1422 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1423 1424 if (disable_agg_tids) { 1425 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1426 queue); 1427 iwl_mvm_invalidate_sta_queue(mvm, queue, 1428 disable_agg_tids, false); 1429 } 1430 } 1431 1432 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1433 1434 /* 1435 * Mark queue as shared in transport if shared 1436 * Note this has to be done after queue enablement because enablement 1437 * can also set this value, and there is no indication there to shared 1438 * queues 1439 */ 1440 if (shared_queue) 1441 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1442 1443 spin_lock_bh(&mvmsta->lock); 1444 /* 1445 * This looks racy, but it is not. We have only one packet for 1446 * this ra/tid in our Tx path since we stop the Qdisc when we 1447 * need to allocate a new TFD queue. 1448 */ 1449 if (inc_ssn) { 1450 mvmsta->tid_data[tid].seq_number += 0x10; 1451 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1452 } 1453 mvmsta->tid_data[tid].txq_id = queue; 1454 mvmsta->tfd_queue_msk |= BIT(queue); 1455 queue_state = mvmsta->tid_data[tid].state; 1456 1457 if (mvmsta->reserved_queue == queue) 1458 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1459 spin_unlock_bh(&mvmsta->lock); 1460 1461 if (!shared_queue) { 1462 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1463 if (ret) 1464 goto out_err; 1465 1466 /* If we need to re-enable aggregations... */ 1467 if (queue_state == IWL_AGG_ON) { 1468 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1469 if (ret) 1470 goto out_err; 1471 } 1472 } else { 1473 /* Redirect queue, if needed */ 1474 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1475 wdg_timeout, false, 1476 iwl_mvm_txq_from_tid(sta, tid)); 1477 if (ret) 1478 goto out_err; 1479 } 1480 1481 return 0; 1482 1483 out_err: 1484 queue_tmp = queue; 1485 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1486 1487 return ret; 1488 } 1489 1490 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm, 1491 struct ieee80211_txq *txq) 1492 { 1493 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1494 int ret = -EINVAL; 1495 1496 lockdep_assert_held(&mvm->mutex); 1497 1498 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) || 1499 !txq->sta) { 1500 return 0; 1501 } 1502 1503 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) { 1504 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1505 ret = 0; 1506 } 1507 1508 local_bh_disable(); 1509 spin_lock(&mvm->add_stream_lock); 1510 if (!list_empty(&mvmtxq->list)) 1511 list_del_init(&mvmtxq->list); 1512 spin_unlock(&mvm->add_stream_lock); 1513 local_bh_enable(); 1514 1515 return ret; 1516 } 1517 1518 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1519 { 1520 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1521 add_stream_wk); 1522 1523 guard(mvm)(mvm); 1524 1525 /* will reschedule to run after restart */ 1526 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) || 1527 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1528 return; 1529 1530 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA); 1531 1532 while (!list_empty(&mvm->add_stream_txqs)) { 1533 struct iwl_mvm_txq *mvmtxq; 1534 struct ieee80211_txq *txq; 1535 u8 tid; 1536 1537 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1538 struct iwl_mvm_txq, list); 1539 1540 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1541 drv_priv); 1542 tid = txq->tid; 1543 if (tid == IEEE80211_NUM_TIDS) 1544 tid = IWL_MAX_TID_COUNT; 1545 1546 /* 1547 * We can't really do much here, but if this fails we can't 1548 * transmit anyway - so just don't transmit the frame etc. 1549 * and let them back up ... we've tried our best to allocate 1550 * a queue in the function itself. 1551 */ 1552 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1553 spin_lock_bh(&mvm->add_stream_lock); 1554 list_del_init(&mvmtxq->list); 1555 spin_unlock_bh(&mvm->add_stream_lock); 1556 continue; 1557 } 1558 1559 /* now we're ready, any remaining races/concurrency will be 1560 * handled in iwl_mvm_mac_itxq_xmit() 1561 */ 1562 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1563 1564 local_bh_disable(); 1565 spin_lock(&mvm->add_stream_lock); 1566 list_del_init(&mvmtxq->list); 1567 spin_unlock(&mvm->add_stream_lock); 1568 1569 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1570 local_bh_enable(); 1571 } 1572 } 1573 1574 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1575 struct ieee80211_sta *sta, 1576 enum nl80211_iftype vif_type) 1577 { 1578 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1579 int queue; 1580 1581 /* queue reserving is disabled on new TX path */ 1582 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1583 return 0; 1584 1585 /* run the general cleanup/unsharing of queues */ 1586 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA); 1587 1588 /* Make sure we have free resources for this STA */ 1589 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1590 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1591 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1592 IWL_MVM_QUEUE_FREE)) 1593 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1594 else 1595 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1596 IWL_MVM_DQA_MIN_DATA_QUEUE, 1597 IWL_MVM_DQA_MAX_DATA_QUEUE); 1598 if (queue < 0) { 1599 /* try again - this time kick out a queue if needed */ 1600 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1601 if (queue < 0) { 1602 IWL_ERR(mvm, "No available queues for new station\n"); 1603 return -ENOSPC; 1604 } 1605 } 1606 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1607 1608 mvmsta->reserved_queue = queue; 1609 1610 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1611 queue, mvmsta->deflink.sta_id); 1612 1613 return 0; 1614 } 1615 1616 /* 1617 * In DQA mode, after a HW restart the queues should be allocated as before, in 1618 * order to avoid race conditions when there are shared queues. This function 1619 * does the re-mapping and queue allocation. 1620 * 1621 * Note that re-enabling aggregations isn't done in this function. 1622 */ 1623 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1624 struct ieee80211_sta *sta) 1625 { 1626 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1627 unsigned int wdg = 1628 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif); 1629 int i; 1630 struct iwl_trans_txq_scd_cfg cfg = { 1631 .sta_id = mvm_sta->deflink.sta_id, 1632 .frame_limit = IWL_FRAME_LIMIT, 1633 }; 1634 1635 /* Make sure reserved queue is still marked as such (if allocated) */ 1636 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1637 mvm->queue_info[mvm_sta->reserved_queue].status = 1638 IWL_MVM_QUEUE_RESERVED; 1639 1640 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1641 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1642 int txq_id = tid_data->txq_id; 1643 int ac; 1644 1645 if (txq_id == IWL_MVM_INVALID_QUEUE) 1646 continue; 1647 1648 ac = tid_to_mac80211_ac[i]; 1649 1650 if (iwl_mvm_has_new_tx_api(mvm)) { 1651 IWL_DEBUG_TX_QUEUES(mvm, 1652 "Re-mapping sta %d tid %d\n", 1653 mvm_sta->deflink.sta_id, i); 1654 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1655 mvm_sta->deflink.sta_id, 1656 i, wdg); 1657 /* 1658 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1659 * to try again later, we have no other good way of 1660 * failing here 1661 */ 1662 if (txq_id < 0) 1663 txq_id = IWL_MVM_INVALID_QUEUE; 1664 tid_data->txq_id = txq_id; 1665 1666 /* 1667 * Since we don't set the seq number after reset, and HW 1668 * sets it now, FW reset will cause the seq num to start 1669 * at 0 again, so driver will need to update it 1670 * internally as well, so it keeps in sync with real val 1671 */ 1672 tid_data->seq_number = 0; 1673 } else { 1674 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1675 1676 cfg.tid = i; 1677 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1678 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1679 txq_id == 1680 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1681 1682 IWL_DEBUG_TX_QUEUES(mvm, 1683 "Re-mapping sta %d tid %d to queue %d\n", 1684 mvm_sta->deflink.sta_id, i, 1685 txq_id); 1686 1687 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1688 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1689 } 1690 } 1691 } 1692 1693 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1694 struct iwl_mvm_int_sta *sta, 1695 const u8 *addr, 1696 u16 mac_id, u16 color) 1697 { 1698 struct iwl_mvm_add_sta_cmd cmd; 1699 int ret; 1700 u32 status = ADD_STA_SUCCESS; 1701 1702 lockdep_assert_held(&mvm->mutex); 1703 1704 memset(&cmd, 0, sizeof(cmd)); 1705 cmd.sta_id = sta->sta_id; 1706 1707 if (iwl_mvm_has_new_station_api(mvm->fw) && 1708 sta->type == IWL_STA_AUX_ACTIVITY) 1709 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1710 else 1711 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1712 color)); 1713 1714 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1715 cmd.station_type = sta->type; 1716 1717 if (!iwl_mvm_has_new_tx_api(mvm)) 1718 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1719 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1720 1721 if (addr) 1722 memcpy(cmd.addr, addr, ETH_ALEN); 1723 1724 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1725 iwl_mvm_add_sta_cmd_size(mvm), 1726 &cmd, &status); 1727 if (ret) 1728 return ret; 1729 1730 switch (status & IWL_ADD_STA_STATUS_MASK) { 1731 case ADD_STA_SUCCESS: 1732 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1733 return 0; 1734 default: 1735 ret = -EIO; 1736 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1737 status); 1738 break; 1739 } 1740 return ret; 1741 } 1742 1743 /* Initialize driver data of a new sta */ 1744 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1745 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1746 { 1747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1748 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1749 struct iwl_mvm_rxq_dup_data *dup_data; 1750 int i, ret = 0; 1751 1752 lockdep_assert_held(&mvm->mutex); 1753 1754 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1755 mvmvif->color); 1756 mvm_sta->vif = vif; 1757 1758 /* for MLD sta_id(s) should be allocated for each link before calling 1759 * this function 1760 */ 1761 if (!mvm->mld_api_is_used) { 1762 if (WARN_ON(sta_id == IWL_INVALID_STA)) 1763 return -EINVAL; 1764 1765 mvm_sta->deflink.sta_id = sta_id; 1766 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1767 1768 if (!mvm->trans->mac_cfg->gen2) 1769 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1770 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1771 else 1772 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1773 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1774 } 1775 1776 mvm_sta->tt_tx_protection = false; 1777 mvm_sta->sta_type = sta_type; 1778 1779 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1780 1781 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1782 /* 1783 * Mark all queues for this STA as unallocated and defer TX 1784 * frames until the queue is allocated 1785 */ 1786 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1787 } 1788 1789 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1790 struct iwl_mvm_txq *mvmtxq = 1791 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1792 1793 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1794 INIT_LIST_HEAD(&mvmtxq->list); 1795 atomic_set(&mvmtxq->tx_request, 0); 1796 } 1797 1798 if (iwl_mvm_has_new_rx_api(mvm)) { 1799 int q; 1800 1801 dup_data = kcalloc(mvm->trans->info.num_rxqs, 1802 sizeof(*dup_data), GFP_KERNEL); 1803 if (!dup_data) 1804 return -ENOMEM; 1805 /* 1806 * Initialize all the last_seq values to 0xffff which can never 1807 * compare equal to the frame's seq_ctrl in the check in 1808 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1809 * number and fragmented packets don't reach that function. 1810 * 1811 * This thus allows receiving a packet with seqno 0 and the 1812 * retry bit set as the very first packet on a new TID. 1813 */ 1814 for (q = 0; q < mvm->trans->info.num_rxqs; q++) 1815 memset(dup_data[q].last_seq, 0xff, 1816 sizeof(dup_data[q].last_seq)); 1817 mvm_sta->dup_data = dup_data; 1818 } 1819 1820 if (!iwl_mvm_has_new_tx_api(mvm)) { 1821 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1822 ieee80211_vif_type_p2p(vif)); 1823 if (ret) 1824 return ret; 1825 } 1826 1827 /* 1828 * if rs is registered with mac80211, then "add station" will be handled 1829 * via the corresponding ops, otherwise need to notify rate scaling here 1830 */ 1831 if (iwl_mvm_has_tlc_offload(mvm)) 1832 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1833 else 1834 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1835 1836 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1837 1838 return 0; 1839 } 1840 1841 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1842 struct ieee80211_vif *vif, 1843 struct ieee80211_sta *sta) 1844 { 1845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1846 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1847 int ret, sta_id; 1848 bool sta_update = false; 1849 unsigned int sta_flags = 0; 1850 1851 lockdep_assert_held(&mvm->mutex); 1852 1853 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1854 sta_id = iwl_mvm_find_free_sta_id(mvm, 1855 ieee80211_vif_type_p2p(vif)); 1856 else 1857 sta_id = mvm_sta->deflink.sta_id; 1858 1859 if (sta_id == IWL_INVALID_STA) 1860 return -ENOSPC; 1861 1862 spin_lock_init(&mvm_sta->lock); 1863 1864 /* if this is a HW restart re-alloc existing queues */ 1865 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1866 struct iwl_mvm_int_sta tmp_sta = { 1867 .sta_id = sta_id, 1868 .type = mvm_sta->sta_type, 1869 }; 1870 1871 /* First add an empty station since allocating 1872 * a queue requires a valid station 1873 */ 1874 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1875 mvmvif->id, mvmvif->color); 1876 if (ret) 1877 goto err; 1878 1879 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1880 sta_update = true; 1881 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1882 goto update_fw; 1883 } 1884 1885 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1886 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1887 if (ret) 1888 goto err; 1889 1890 update_fw: 1891 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1892 if (ret) 1893 goto err; 1894 1895 if (vif->type == NL80211_IFTYPE_STATION) { 1896 if (!sta->tdls) { 1897 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_INVALID_STA); 1898 mvmvif->deflink.ap_sta_id = sta_id; 1899 } else { 1900 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_INVALID_STA); 1901 } 1902 } 1903 1904 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1905 1906 return 0; 1907 1908 err: 1909 return ret; 1910 } 1911 1912 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1913 bool drain) 1914 { 1915 struct iwl_mvm_add_sta_cmd cmd = {}; 1916 int ret; 1917 u32 status; 1918 1919 lockdep_assert_held(&mvm->mutex); 1920 1921 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1922 cmd.sta_id = mvmsta->deflink.sta_id; 1923 cmd.add_modify = STA_MODE_MODIFY; 1924 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1925 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1926 1927 status = ADD_STA_SUCCESS; 1928 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1929 iwl_mvm_add_sta_cmd_size(mvm), 1930 &cmd, &status); 1931 if (ret) 1932 return ret; 1933 1934 switch (status & IWL_ADD_STA_STATUS_MASK) { 1935 case ADD_STA_SUCCESS: 1936 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1937 mvmsta->deflink.sta_id); 1938 break; 1939 default: 1940 ret = -EIO; 1941 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1942 mvmsta->deflink.sta_id); 1943 break; 1944 } 1945 1946 return ret; 1947 } 1948 1949 /* 1950 * Remove a station from the FW table. Before sending the command to remove 1951 * the station validate that the station is indeed known to the driver (sanity 1952 * only). 1953 */ 1954 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1955 { 1956 struct ieee80211_sta *sta; 1957 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1958 .sta_id = sta_id, 1959 }; 1960 int ret; 1961 1962 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1963 lockdep_is_held(&mvm->mutex)); 1964 1965 /* Note: internal stations are marked as error values */ 1966 if (!sta) { 1967 IWL_ERR(mvm, "Invalid station id\n"); 1968 return -EINVAL; 1969 } 1970 1971 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1972 sizeof(rm_sta_cmd), &rm_sta_cmd); 1973 if (ret) { 1974 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1975 return ret; 1976 } 1977 1978 return 0; 1979 } 1980 1981 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1982 struct ieee80211_vif *vif, 1983 struct ieee80211_sta *sta) 1984 { 1985 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1986 int i; 1987 1988 lockdep_assert_held(&mvm->mutex); 1989 1990 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1991 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1992 continue; 1993 1994 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 1995 &mvm_sta->tid_data[i].txq_id, i); 1996 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1997 } 1998 1999 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 2000 struct iwl_mvm_txq *mvmtxq = 2001 iwl_mvm_txq_from_mac80211(sta->txq[i]); 2002 2003 spin_lock_bh(&mvm->add_stream_lock); 2004 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 2005 list_del_init(&mvmtxq->list); 2006 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 2007 spin_unlock_bh(&mvm->add_stream_lock); 2008 } 2009 } 2010 2011 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 2012 struct iwl_mvm_sta *mvm_sta) 2013 { 2014 int i; 2015 2016 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2017 u16 txq_id; 2018 int ret; 2019 2020 spin_lock_bh(&mvm_sta->lock); 2021 txq_id = mvm_sta->tid_data[i].txq_id; 2022 spin_unlock_bh(&mvm_sta->lock); 2023 2024 if (txq_id == IWL_MVM_INVALID_QUEUE) 2025 continue; 2026 2027 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2028 if (ret) 2029 return ret; 2030 } 2031 2032 return 0; 2033 } 2034 2035 /* Execute the common part for both MLD and non-MLD modes. 2036 * Returns if we're done with removing the station, either 2037 * with error or success 2038 */ 2039 void iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2040 struct ieee80211_sta *sta, 2041 struct ieee80211_link_sta *link_sta) 2042 { 2043 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2044 struct iwl_mvm_vif_link_info *mvm_link = 2045 mvmvif->link[link_sta->link_id]; 2046 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2047 struct iwl_mvm_link_sta *mvm_link_sta; 2048 u8 sta_id; 2049 2050 lockdep_assert_held(&mvm->mutex); 2051 2052 mvm_link_sta = 2053 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2054 lockdep_is_held(&mvm->mutex)); 2055 sta_id = mvm_link_sta->sta_id; 2056 2057 if (vif->type == NL80211_IFTYPE_STATION && 2058 mvm_link->ap_sta_id == sta_id) { 2059 /* first remove remaining keys */ 2060 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 2061 link_sta->link_id); 2062 2063 mvm_link->ap_sta_id = IWL_INVALID_STA; 2064 } 2065 2066 /* 2067 * This shouldn't happen - the TDLS channel switch should be canceled 2068 * before the STA is removed. 2069 */ 2070 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2071 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA; 2072 cancel_delayed_work(&mvm->tdls_cs.dwork); 2073 } 2074 } 2075 2076 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2077 struct ieee80211_vif *vif, 2078 struct ieee80211_sta *sta) 2079 { 2080 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2081 int ret; 2082 2083 lockdep_assert_held(&mvm->mutex); 2084 2085 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2086 if (ret) 2087 return ret; 2088 2089 /* flush its queues here since we are freeing mvm_sta */ 2090 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id, 2091 mvm_sta->tfd_queue_msk); 2092 if (ret) 2093 return ret; 2094 if (iwl_mvm_has_new_tx_api(mvm)) { 2095 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2096 } else { 2097 u32 q_mask = mvm_sta->tfd_queue_msk; 2098 2099 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2100 q_mask); 2101 } 2102 if (ret) 2103 return ret; 2104 2105 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2106 2107 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2108 2109 /* If there is a TXQ still marked as reserved - free it */ 2110 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2111 u8 reserved_txq = mvm_sta->reserved_queue; 2112 enum iwl_mvm_queue_status *status; 2113 2114 /* 2115 * If no traffic has gone through the reserved TXQ - it 2116 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2117 * should be manually marked as free again 2118 */ 2119 status = &mvm->queue_info[reserved_txq].status; 2120 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2121 (*status != IWL_MVM_QUEUE_FREE), 2122 "sta_id %d reserved txq %d status %d", 2123 mvm_sta->deflink.sta_id, reserved_txq, *status)) 2124 return -EINVAL; 2125 2126 *status = IWL_MVM_QUEUE_FREE; 2127 } 2128 2129 iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink); 2130 2131 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2132 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2133 2134 return ret; 2135 } 2136 2137 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2138 struct ieee80211_vif *vif, 2139 u8 sta_id) 2140 { 2141 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2142 2143 lockdep_assert_held(&mvm->mutex); 2144 2145 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2146 return ret; 2147 } 2148 2149 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2150 struct iwl_mvm_int_sta *sta, 2151 u32 qmask, enum nl80211_iftype iftype, 2152 u8 type) 2153 { 2154 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2155 sta->sta_id == IWL_INVALID_STA) { 2156 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2157 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA)) 2158 return -ENOSPC; 2159 } 2160 2161 sta->tfd_queue_msk = qmask; 2162 sta->type = type; 2163 2164 /* put a non-NULL value so iterating over the stations won't stop */ 2165 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2166 return 0; 2167 } 2168 2169 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2170 { 2171 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2172 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2173 sta->sta_id = IWL_INVALID_STA; 2174 } 2175 2176 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2177 u8 sta_id, u8 fifo) 2178 { 2179 unsigned int wdg_timeout = 2180 mvm->trans->mac_cfg->base->wd_timeout; 2181 struct iwl_trans_txq_scd_cfg cfg = { 2182 .fifo = fifo, 2183 .sta_id = sta_id, 2184 .tid = IWL_MAX_TID_COUNT, 2185 .aggregate = false, 2186 .frame_limit = IWL_FRAME_LIMIT, 2187 }; 2188 2189 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2190 2191 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2192 } 2193 2194 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2195 { 2196 unsigned int wdg_timeout = 2197 mvm->trans->mac_cfg->base->wd_timeout; 2198 2199 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2200 2201 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2202 wdg_timeout); 2203 } 2204 2205 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2206 int maccolor, u8 *addr, 2207 struct iwl_mvm_int_sta *sta, 2208 u16 *queue, int fifo) 2209 { 2210 int ret; 2211 2212 /* Map queue to fifo - needs to happen before adding station */ 2213 if (!iwl_mvm_has_new_tx_api(mvm)) 2214 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2215 2216 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2217 if (ret) { 2218 if (!iwl_mvm_has_new_tx_api(mvm)) 2219 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2220 IWL_MAX_TID_COUNT); 2221 return ret; 2222 } 2223 2224 /* 2225 * For 22000 firmware and on we cannot add queue to a station unknown 2226 * to firmware so enable queue here - after the station was added 2227 */ 2228 if (iwl_mvm_has_new_tx_api(mvm)) { 2229 int txq; 2230 2231 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2232 if (txq < 0) { 2233 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2234 return txq; 2235 } 2236 2237 *queue = txq; 2238 } 2239 2240 return 0; 2241 } 2242 2243 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2244 { 2245 int ret; 2246 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2247 BIT(mvm->aux_queue); 2248 2249 lockdep_assert_held(&mvm->mutex); 2250 2251 /* Allocate aux station and assign to it the aux queue */ 2252 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2253 NL80211_IFTYPE_UNSPECIFIED, 2254 IWL_STA_AUX_ACTIVITY); 2255 if (ret) 2256 return ret; 2257 2258 /* 2259 * In CDB NICs we need to specify which lmac to use for aux activity 2260 * using the mac_id argument place to send lmac_id to the function 2261 */ 2262 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2263 &mvm->aux_sta, &mvm->aux_queue, 2264 IWL_MVM_TX_FIFO_MCAST); 2265 if (ret) { 2266 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2267 return ret; 2268 } 2269 2270 return 0; 2271 } 2272 2273 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2274 { 2275 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2276 2277 lockdep_assert_held(&mvm->mutex); 2278 2279 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2280 NULL, &mvm->snif_sta, 2281 &mvm->snif_queue, 2282 IWL_MVM_TX_FIFO_BE); 2283 } 2284 2285 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2286 { 2287 int ret; 2288 2289 lockdep_assert_held(&mvm->mutex); 2290 2291 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA)) 2292 return -EINVAL; 2293 2294 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2295 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2296 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2297 if (ret) 2298 IWL_WARN(mvm, "Failed sending remove station\n"); 2299 2300 return ret; 2301 } 2302 2303 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2304 { 2305 int ret; 2306 2307 lockdep_assert_held(&mvm->mutex); 2308 2309 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA)) 2310 return -EINVAL; 2311 2312 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2313 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2314 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2315 if (ret) 2316 IWL_WARN(mvm, "Failed sending remove station\n"); 2317 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2318 2319 return ret; 2320 } 2321 2322 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2323 { 2324 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2325 } 2326 2327 /* 2328 * Send the add station command for the vif's broadcast station. 2329 * Assumes that the station was already allocated. 2330 * 2331 * @mvm: the mvm component 2332 * @vif: the interface to which the broadcast station is added 2333 * @bsta: the broadcast station to add. 2334 */ 2335 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2336 { 2337 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2338 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2339 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2340 const u8 *baddr = _baddr; 2341 int queue; 2342 int ret; 2343 unsigned int wdg_timeout = 2344 iwl_mvm_get_wd_timeout(mvm, vif); 2345 struct iwl_trans_txq_scd_cfg cfg = { 2346 .fifo = IWL_MVM_TX_FIFO_VO, 2347 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2348 .tid = IWL_MAX_TID_COUNT, 2349 .aggregate = false, 2350 .frame_limit = IWL_FRAME_LIMIT, 2351 }; 2352 2353 lockdep_assert_held(&mvm->mutex); 2354 2355 if (!iwl_mvm_has_new_tx_api(mvm)) { 2356 if (vif->type == NL80211_IFTYPE_AP || 2357 vif->type == NL80211_IFTYPE_ADHOC) { 2358 queue = mvm->probe_queue; 2359 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2360 queue = mvm->p2p_dev_queue; 2361 } else { 2362 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2363 return -EINVAL; 2364 } 2365 2366 bsta->tfd_queue_msk |= BIT(queue); 2367 2368 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2369 } 2370 2371 if (vif->type == NL80211_IFTYPE_ADHOC) 2372 baddr = vif->bss_conf.bssid; 2373 2374 if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA)) 2375 return -ENOSPC; 2376 2377 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2378 mvmvif->id, mvmvif->color); 2379 if (ret) 2380 return ret; 2381 2382 /* 2383 * For 22000 firmware and on we cannot add queue to a station unknown 2384 * to firmware so enable queue here - after the station was added 2385 */ 2386 if (iwl_mvm_has_new_tx_api(mvm)) { 2387 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2388 IWL_MAX_TID_COUNT, 2389 wdg_timeout); 2390 if (queue < 0) { 2391 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2392 return queue; 2393 } 2394 2395 if (vif->type == NL80211_IFTYPE_AP || 2396 vif->type == NL80211_IFTYPE_ADHOC) { 2397 /* for queue management */ 2398 mvm->probe_queue = queue; 2399 /* for use in TX */ 2400 mvmvif->deflink.mgmt_queue = queue; 2401 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2402 mvm->p2p_dev_queue = queue; 2403 } 2404 } else if (vif->type == NL80211_IFTYPE_AP || 2405 vif->type == NL80211_IFTYPE_ADHOC) { 2406 /* set it for use in TX */ 2407 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2408 } 2409 2410 return 0; 2411 } 2412 2413 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2414 struct ieee80211_vif *vif) 2415 { 2416 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2417 u16 *queueptr, queue; 2418 2419 lockdep_assert_held(&mvm->mutex); 2420 2421 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, 2422 mvmvif->deflink.bcast_sta.tfd_queue_msk); 2423 2424 switch (vif->type) { 2425 case NL80211_IFTYPE_AP: 2426 case NL80211_IFTYPE_ADHOC: 2427 queueptr = &mvm->probe_queue; 2428 break; 2429 case NL80211_IFTYPE_P2P_DEVICE: 2430 queueptr = &mvm->p2p_dev_queue; 2431 break; 2432 default: 2433 WARN(1, "Can't free bcast queue on vif type %d\n", 2434 vif->type); 2435 return; 2436 } 2437 2438 queue = *queueptr; 2439 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2440 queueptr, IWL_MAX_TID_COUNT); 2441 2442 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2443 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2444 2445 if (iwl_mvm_has_new_tx_api(mvm)) 2446 return; 2447 2448 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2449 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2450 } 2451 2452 /* Send the FW a request to remove the station from its internal data 2453 * structures, but DO NOT remove the entry from the local data structures. */ 2454 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2455 { 2456 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2457 int ret; 2458 2459 lockdep_assert_held(&mvm->mutex); 2460 2461 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2462 2463 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2464 if (ret) 2465 IWL_WARN(mvm, "Failed sending remove station\n"); 2466 return ret; 2467 } 2468 2469 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2470 { 2471 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2472 2473 lockdep_assert_held(&mvm->mutex); 2474 2475 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2476 ieee80211_vif_type_p2p(vif), 2477 IWL_STA_GENERAL_PURPOSE); 2478 } 2479 2480 /* Allocate a new station entry for the broadcast station to the given vif, 2481 * and send it to the FW. 2482 * Note that each P2P mac should have its own broadcast station. 2483 * 2484 * @mvm: the mvm component 2485 * @vif: the interface to which the broadcast station is added 2486 * @bsta: the broadcast station to add. */ 2487 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2488 { 2489 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2490 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2491 int ret; 2492 2493 lockdep_assert_held(&mvm->mutex); 2494 2495 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2496 if (ret) 2497 return ret; 2498 2499 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2500 2501 if (ret) 2502 iwl_mvm_dealloc_int_sta(mvm, bsta); 2503 2504 return ret; 2505 } 2506 2507 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2508 { 2509 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2510 2511 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2512 } 2513 2514 /* 2515 * Send the FW a request to remove the station from its internal data 2516 * structures, and in addition remove it from the local data structure. 2517 */ 2518 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2519 { 2520 int ret; 2521 2522 lockdep_assert_held(&mvm->mutex); 2523 2524 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2525 2526 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2527 2528 return ret; 2529 } 2530 2531 /* 2532 * Allocate a new station entry for the multicast station to the given vif, 2533 * and send it to the FW. 2534 * Note that each AP/GO mac should have its own multicast station. 2535 * 2536 * @mvm: the mvm component 2537 * @vif: the interface to which the multicast station is added 2538 */ 2539 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2540 { 2541 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2542 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2543 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2544 const u8 *maddr = _maddr; 2545 struct iwl_trans_txq_scd_cfg cfg = { 2546 .fifo = vif->type == NL80211_IFTYPE_AP ? 2547 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2548 .sta_id = msta->sta_id, 2549 .tid = 0, 2550 .aggregate = false, 2551 .frame_limit = IWL_FRAME_LIMIT, 2552 }; 2553 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif); 2554 int ret; 2555 2556 lockdep_assert_held(&mvm->mutex); 2557 2558 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2559 vif->type != NL80211_IFTYPE_ADHOC)) 2560 return -EOPNOTSUPP; 2561 2562 /* 2563 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2564 * invalid, so make sure we use the queue we want. 2565 * Note that this is done here as we want to avoid making DQA 2566 * changes in mac80211 layer. 2567 */ 2568 if (vif->type == NL80211_IFTYPE_ADHOC) 2569 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2570 2571 /* 2572 * While in previous FWs we had to exclude cab queue from TFD queue 2573 * mask, now it is needed as any other queue. 2574 */ 2575 if (!iwl_mvm_has_new_tx_api(mvm) && 2576 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2577 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2578 &cfg, 2579 timeout); 2580 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2581 } 2582 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2583 mvmvif->id, mvmvif->color); 2584 if (ret) 2585 goto err; 2586 2587 /* 2588 * Enable cab queue after the ADD_STA command is sent. 2589 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2590 * command with unknown station id, and for FW that doesn't support 2591 * station API since the cab queue is not included in the 2592 * tfd_queue_mask. 2593 */ 2594 if (iwl_mvm_has_new_tx_api(mvm)) { 2595 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2596 0, timeout); 2597 if (queue < 0) { 2598 ret = queue; 2599 goto err; 2600 } 2601 mvmvif->deflink.cab_queue = queue; 2602 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2603 IWL_UCODE_TLV_API_STA_TYPE)) 2604 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2605 &cfg, 2606 timeout); 2607 2608 return 0; 2609 err: 2610 iwl_mvm_dealloc_int_sta(mvm, msta); 2611 return ret; 2612 } 2613 2614 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2615 struct ieee80211_key_conf *keyconf, 2616 bool mcast) 2617 { 2618 union { 2619 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2620 struct iwl_mvm_add_sta_key_cmd cmd; 2621 } u = {}; 2622 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2623 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2624 __le16 key_flags; 2625 int ret, size; 2626 u32 status; 2627 2628 /* This is a valid situation for GTK removal */ 2629 if (sta_id == IWL_INVALID_STA) 2630 return 0; 2631 2632 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2633 STA_KEY_FLG_KEYID_MSK); 2634 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2635 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2636 2637 if (mcast) 2638 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2639 2640 /* 2641 * The fields assigned here are in the same location at the start 2642 * of the command, so we can do this union trick. 2643 */ 2644 u.cmd.common.key_flags = key_flags; 2645 u.cmd.common.key_offset = keyconf->hw_key_idx; 2646 u.cmd.common.sta_id = sta_id; 2647 2648 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2649 2650 status = ADD_STA_SUCCESS; 2651 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2652 &status); 2653 2654 switch (status) { 2655 case ADD_STA_SUCCESS: 2656 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2657 break; 2658 default: 2659 ret = -EIO; 2660 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2661 break; 2662 } 2663 2664 return ret; 2665 } 2666 2667 /* 2668 * Send the FW a request to remove the station from its internal data 2669 * structures, and in addition remove it from the local data structure. 2670 */ 2671 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2672 { 2673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2674 int ret; 2675 2676 lockdep_assert_held(&mvm->mutex); 2677 2678 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id, 2679 mvmvif->deflink.mcast_sta.tfd_queue_msk); 2680 2681 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2682 &mvmvif->deflink.cab_queue, 0); 2683 2684 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2685 if (ret) 2686 IWL_WARN(mvm, "Failed sending remove station\n"); 2687 2688 return ret; 2689 } 2690 2691 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2692 { 2693 struct iwl_mvm_delba_data notif = { 2694 .baid = baid, 2695 }; 2696 2697 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2698 ¬if, sizeof(notif)); 2699 }; 2700 2701 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2702 struct iwl_mvm_baid_data *data) 2703 { 2704 int i; 2705 2706 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2707 2708 for (i = 0; i < mvm->trans->info.num_rxqs; i++) { 2709 int j; 2710 struct iwl_mvm_reorder_buffer *reorder_buf = 2711 &data->reorder_buf[i]; 2712 struct iwl_mvm_reorder_buf_entry *entries = 2713 &data->entries[i * data->entries_per_queue]; 2714 2715 spin_lock_bh(&reorder_buf->lock); 2716 if (likely(!reorder_buf->num_stored)) { 2717 spin_unlock_bh(&reorder_buf->lock); 2718 continue; 2719 } 2720 2721 /* 2722 * This shouldn't happen in regular DELBA since the internal 2723 * delBA notification should trigger a release of all frames in 2724 * the reorder buffer. 2725 */ 2726 WARN_ON(1); 2727 2728 for (j = 0; j < data->buf_size; j++) 2729 __skb_queue_purge(&entries[j].frames); 2730 2731 spin_unlock_bh(&reorder_buf->lock); 2732 } 2733 } 2734 2735 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2736 struct iwl_mvm_baid_data *data, 2737 u16 ssn) 2738 { 2739 int i; 2740 2741 for (i = 0; i < mvm->trans->info.num_rxqs; i++) { 2742 struct iwl_mvm_reorder_buffer *reorder_buf = 2743 &data->reorder_buf[i]; 2744 struct iwl_mvm_reorder_buf_entry *entries = 2745 &data->entries[i * data->entries_per_queue]; 2746 int j; 2747 2748 reorder_buf->num_stored = 0; 2749 reorder_buf->head_sn = ssn; 2750 spin_lock_init(&reorder_buf->lock); 2751 reorder_buf->queue = i; 2752 reorder_buf->valid = false; 2753 for (j = 0; j < data->buf_size; j++) 2754 __skb_queue_head_init(&entries[j].frames); 2755 } 2756 } 2757 2758 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2759 struct ieee80211_sta *sta, 2760 bool start, int tid, u16 ssn, 2761 u16 buf_size) 2762 { 2763 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2764 struct iwl_mvm_add_sta_cmd cmd = { 2765 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2766 .sta_id = mvm_sta->deflink.sta_id, 2767 .add_modify = STA_MODE_MODIFY, 2768 }; 2769 u32 status; 2770 int ret; 2771 2772 if (start) { 2773 cmd.add_immediate_ba_tid = tid; 2774 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2775 cmd.rx_ba_window = cpu_to_le16(buf_size); 2776 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2777 } else { 2778 cmd.remove_immediate_ba_tid = tid; 2779 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2780 } 2781 2782 status = ADD_STA_SUCCESS; 2783 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2784 iwl_mvm_add_sta_cmd_size(mvm), 2785 &cmd, &status); 2786 if (ret) 2787 return ret; 2788 2789 switch (status & IWL_ADD_STA_STATUS_MASK) { 2790 case ADD_STA_SUCCESS: 2791 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2792 start ? "start" : "stopp"); 2793 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2794 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2795 return -EINVAL; 2796 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2797 case ADD_STA_IMMEDIATE_BA_FAILURE: 2798 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2799 return -ENOSPC; 2800 default: 2801 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2802 start ? "start" : "stopp", status); 2803 return -EIO; 2804 } 2805 } 2806 2807 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2808 struct ieee80211_sta *sta, 2809 bool start, int tid, u16 ssn, 2810 u16 buf_size, int baid) 2811 { 2812 struct iwl_rx_baid_cfg_cmd cmd = { 2813 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2814 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2815 }; 2816 struct iwl_host_cmd hcmd = { 2817 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD), 2818 .flags = CMD_SEND_IN_RFKILL, 2819 .len[0] = sizeof(cmd), 2820 .data[0] = &cmd, 2821 }; 2822 int ret; 2823 2824 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2825 2826 if (start) { 2827 cmd.alloc.sta_id_mask = 2828 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2829 cmd.alloc.tid = tid; 2830 cmd.alloc.ssn = cpu_to_le16(ssn); 2831 cmd.alloc.win_size = cpu_to_le16(buf_size); 2832 baid = -EIO; 2833 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) { 2834 cmd.remove_v1.baid = cpu_to_le32(baid); 2835 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2836 } else { 2837 cmd.remove.sta_id_mask = 2838 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2839 cmd.remove.tid = cpu_to_le32(tid); 2840 } 2841 2842 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid); 2843 if (ret) 2844 return ret; 2845 2846 if (!start) { 2847 /* ignore firmware baid on remove */ 2848 baid = 0; 2849 } 2850 2851 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2852 start ? "start" : "stopp"); 2853 2854 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2855 return -EINVAL; 2856 2857 return baid; 2858 } 2859 2860 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2861 bool start, int tid, u16 ssn, u16 buf_size, 2862 int baid) 2863 { 2864 if (fw_has_capa(&mvm->fw->ucode_capa, 2865 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2866 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2867 tid, ssn, buf_size, baid); 2868 2869 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2870 tid, ssn, buf_size); 2871 } 2872 2873 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2874 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2875 { 2876 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2877 struct iwl_mvm_baid_data *baid_data = NULL; 2878 int ret, baid; 2879 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2880 IWL_MAX_BAID_OLD; 2881 2882 lockdep_assert_held(&mvm->mutex); 2883 2884 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2885 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2886 return -ENOSPC; 2887 } 2888 2889 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2890 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2891 2892 /* sparse doesn't like the __align() so don't check */ 2893 #ifndef __CHECKER__ 2894 /* 2895 * The division below will be OK if either the cache line size 2896 * can be divided by the entry size (ALIGN will round up) or if 2897 * the entry size can be divided by the cache line size, in 2898 * which case the ALIGN() will do nothing. 2899 */ 2900 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2901 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2902 #endif 2903 2904 /* 2905 * Upward align the reorder buffer size to fill an entire cache 2906 * line for each queue, to avoid sharing cache lines between 2907 * different queues. 2908 */ 2909 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2910 2911 /* 2912 * Allocate here so if allocation fails we can bail out early 2913 * before starting the BA session in the firmware 2914 */ 2915 baid_data = kzalloc(sizeof(*baid_data) + 2916 mvm->trans->info.num_rxqs * 2917 reorder_buf_size, 2918 GFP_KERNEL); 2919 if (!baid_data) 2920 return -ENOMEM; 2921 2922 /* 2923 * This division is why we need the above BUILD_BUG_ON(), 2924 * if that doesn't hold then this will not be right. 2925 */ 2926 baid_data->entries_per_queue = 2927 reorder_buf_size / sizeof(baid_data->entries[0]); 2928 } 2929 2930 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2931 baid = mvm_sta->tid_to_baid[tid]; 2932 } else { 2933 /* we don't really need it in this case */ 2934 baid = -1; 2935 } 2936 2937 /* Don't send command to remove (start=0) BAID during restart */ 2938 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2939 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2940 baid); 2941 2942 if (baid < 0) { 2943 ret = baid; 2944 goto out_free; 2945 } 2946 2947 if (start) { 2948 mvm->rx_ba_sessions++; 2949 2950 if (!iwl_mvm_has_new_rx_api(mvm)) 2951 return 0; 2952 2953 baid_data->baid = baid; 2954 baid_data->timeout = timeout; 2955 baid_data->last_rx = jiffies; 2956 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2957 timer_setup(&baid_data->session_timer, 2958 iwl_mvm_rx_agg_session_expired, 0); 2959 baid_data->mvm = mvm; 2960 baid_data->tid = tid; 2961 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2962 baid_data->buf_size = buf_size; 2963 2964 mvm_sta->tid_to_baid[tid] = baid; 2965 if (timeout) 2966 mod_timer(&baid_data->session_timer, 2967 TU_TO_EXP_TIME(timeout * 2)); 2968 2969 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn); 2970 /* 2971 * protect the BA data with RCU to cover a case where our 2972 * internal RX sync mechanism will timeout (not that it's 2973 * supposed to happen) and we will free the session data while 2974 * RX is being processed in parallel 2975 */ 2976 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2977 mvm_sta->deflink.sta_id, tid, baid); 2978 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2979 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2980 } else { 2981 baid = mvm_sta->tid_to_baid[tid]; 2982 2983 if (mvm->rx_ba_sessions > 0) 2984 /* check that restart flow didn't zero the counter */ 2985 mvm->rx_ba_sessions--; 2986 if (!iwl_mvm_has_new_rx_api(mvm)) 2987 return 0; 2988 2989 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2990 return -EINVAL; 2991 2992 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2993 if (WARN_ON(!baid_data)) 2994 return -EINVAL; 2995 2996 /* synchronize all rx queues so we can safely delete */ 2997 iwl_mvm_free_reorder(mvm, baid_data); 2998 timer_shutdown_sync(&baid_data->session_timer); 2999 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 3000 kfree_rcu(baid_data, rcu_head); 3001 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 3002 } 3003 return 0; 3004 3005 out_free: 3006 kfree(baid_data); 3007 return ret; 3008 } 3009 3010 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3011 int tid, u8 queue, bool start) 3012 { 3013 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3014 struct iwl_mvm_add_sta_cmd cmd = {}; 3015 int ret; 3016 u32 status; 3017 3018 lockdep_assert_held(&mvm->mutex); 3019 3020 if (start) { 3021 mvm_sta->tfd_queue_msk |= BIT(queue); 3022 mvm_sta->tid_disable_agg &= ~BIT(tid); 3023 } else { 3024 /* In DQA-mode the queue isn't removed on agg termination */ 3025 mvm_sta->tid_disable_agg |= BIT(tid); 3026 } 3027 3028 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3029 cmd.sta_id = mvm_sta->deflink.sta_id; 3030 cmd.add_modify = STA_MODE_MODIFY; 3031 if (!iwl_mvm_has_new_tx_api(mvm)) 3032 cmd.modify_mask = STA_MODIFY_QUEUES; 3033 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3034 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3035 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3036 3037 status = ADD_STA_SUCCESS; 3038 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3039 iwl_mvm_add_sta_cmd_size(mvm), 3040 &cmd, &status); 3041 if (ret) 3042 return ret; 3043 3044 switch (status & IWL_ADD_STA_STATUS_MASK) { 3045 case ADD_STA_SUCCESS: 3046 break; 3047 default: 3048 ret = -EIO; 3049 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3050 start ? "start" : "stopp", status); 3051 break; 3052 } 3053 3054 return ret; 3055 } 3056 3057 const u8 tid_to_mac80211_ac[] = { 3058 IEEE80211_AC_BE, 3059 IEEE80211_AC_BK, 3060 IEEE80211_AC_BK, 3061 IEEE80211_AC_BE, 3062 IEEE80211_AC_VI, 3063 IEEE80211_AC_VI, 3064 IEEE80211_AC_VO, 3065 IEEE80211_AC_VO, 3066 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3067 }; 3068 3069 static const u8 tid_to_ucode_ac[] = { 3070 AC_BE, 3071 AC_BK, 3072 AC_BK, 3073 AC_BE, 3074 AC_VI, 3075 AC_VI, 3076 AC_VO, 3077 AC_VO, 3078 }; 3079 3080 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3081 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3082 { 3083 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3084 struct iwl_mvm_tid_data *tid_data; 3085 u16 normalized_ssn; 3086 u16 txq_id; 3087 int ret; 3088 3089 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3090 return -EINVAL; 3091 3092 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3093 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3094 IWL_ERR(mvm, 3095 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3096 mvmsta->tid_data[tid].state); 3097 return -ENXIO; 3098 } 3099 3100 lockdep_assert_held(&mvm->mutex); 3101 3102 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3103 iwl_mvm_has_new_tx_api(mvm)) { 3104 u8 ac = tid_to_mac80211_ac[tid]; 3105 3106 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3107 if (ret) 3108 return ret; 3109 } 3110 3111 spin_lock_bh(&mvmsta->lock); 3112 3113 /* 3114 * Note the possible cases: 3115 * 1. An enabled TXQ - TXQ needs to become agg'ed 3116 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3117 * it as reserved 3118 */ 3119 txq_id = mvmsta->tid_data[tid].txq_id; 3120 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3121 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3122 IWL_MVM_DQA_MIN_DATA_QUEUE, 3123 IWL_MVM_DQA_MAX_DATA_QUEUE); 3124 if (ret < 0) { 3125 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3126 goto out; 3127 } 3128 3129 txq_id = ret; 3130 3131 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3132 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3133 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3134 ret = -ENXIO; 3135 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3136 tid, IWL_MAX_HW_QUEUES - 1); 3137 goto out; 3138 3139 } else if (unlikely(mvm->queue_info[txq_id].status == 3140 IWL_MVM_QUEUE_SHARED)) { 3141 ret = -ENXIO; 3142 IWL_DEBUG_TX_QUEUES(mvm, 3143 "Can't start tid %d agg on shared queue!\n", 3144 tid); 3145 goto out; 3146 } 3147 3148 IWL_DEBUG_TX_QUEUES(mvm, 3149 "AGG for tid %d will be on queue #%d\n", 3150 tid, txq_id); 3151 3152 tid_data = &mvmsta->tid_data[tid]; 3153 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3154 tid_data->txq_id = txq_id; 3155 *ssn = tid_data->ssn; 3156 3157 IWL_DEBUG_TX_QUEUES(mvm, 3158 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3159 mvmsta->deflink.sta_id, tid, txq_id, 3160 tid_data->ssn, 3161 tid_data->next_reclaimed); 3162 3163 /* 3164 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3165 * to align the wrap around of ssn so we compare relevant values. 3166 */ 3167 normalized_ssn = tid_data->ssn; 3168 if (mvm->trans->mac_cfg->gen2) 3169 normalized_ssn &= 0xff; 3170 3171 if (normalized_ssn == tid_data->next_reclaimed) { 3172 tid_data->state = IWL_AGG_STARTING; 3173 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3174 } else { 3175 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3176 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3177 } 3178 3179 out: 3180 spin_unlock_bh(&mvmsta->lock); 3181 3182 return ret; 3183 } 3184 3185 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3186 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3187 bool amsdu) 3188 { 3189 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3190 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3191 unsigned int wdg_timeout = 3192 iwl_mvm_get_wd_timeout(mvm, vif); 3193 int queue, ret; 3194 bool alloc_queue = true; 3195 enum iwl_mvm_queue_status queue_status; 3196 u16 ssn; 3197 3198 struct iwl_trans_txq_scd_cfg cfg = { 3199 .sta_id = mvmsta->deflink.sta_id, 3200 .tid = tid, 3201 .frame_limit = buf_size, 3202 .aggregate = true, 3203 }; 3204 3205 /* 3206 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3207 * manager, so this function should never be called in this case. 3208 */ 3209 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3210 return -EINVAL; 3211 3212 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3213 != IWL_MAX_TID_COUNT); 3214 3215 spin_lock_bh(&mvmsta->lock); 3216 ssn = tid_data->ssn; 3217 queue = tid_data->txq_id; 3218 tid_data->state = IWL_AGG_ON; 3219 mvmsta->agg_tids |= BIT(tid); 3220 tid_data->ssn = 0xffff; 3221 tid_data->amsdu_in_ampdu_allowed = amsdu; 3222 spin_unlock_bh(&mvmsta->lock); 3223 3224 if (iwl_mvm_has_new_tx_api(mvm)) { 3225 /* 3226 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3227 * would have failed, so if we are here there is no need to 3228 * allocate a queue. 3229 * However, if aggregation size is different than the default 3230 * size, the scheduler should be reconfigured. 3231 * We cannot do this with the new TX API, so return unsupported 3232 * for now, until it will be offloaded to firmware.. 3233 * Note that if SCD default value changes - this condition 3234 * should be updated as well. 3235 */ 3236 if (buf_size < IWL_FRAME_LIMIT) 3237 return -EOPNOTSUPP; 3238 3239 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3240 if (ret) 3241 return -EIO; 3242 goto out; 3243 } 3244 3245 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3246 3247 queue_status = mvm->queue_info[queue].status; 3248 3249 /* Maybe there is no need to even alloc a queue... */ 3250 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3251 alloc_queue = false; 3252 3253 /* 3254 * Only reconfig the SCD for the queue if the window size has 3255 * changed from current (become smaller) 3256 */ 3257 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3258 /* 3259 * If reconfiguring an existing queue, it first must be 3260 * drained 3261 */ 3262 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3263 BIT(queue)); 3264 if (ret) { 3265 IWL_ERR(mvm, 3266 "Error draining queue before reconfig\n"); 3267 return ret; 3268 } 3269 3270 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3271 mvmsta->deflink.sta_id, tid, 3272 buf_size, ssn); 3273 if (ret) { 3274 IWL_ERR(mvm, 3275 "Error reconfiguring TXQ #%d\n", queue); 3276 return ret; 3277 } 3278 } 3279 3280 if (alloc_queue) 3281 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3282 &cfg, wdg_timeout); 3283 3284 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3285 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3286 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3287 if (ret) 3288 return -EIO; 3289 } 3290 3291 /* No need to mark as reserved */ 3292 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3293 3294 out: 3295 /* 3296 * Even though in theory the peer could have different 3297 * aggregation reorder buffer sizes for different sessions, 3298 * our ucode doesn't allow for that and has a global limit 3299 * for each station. Therefore, use the minimum of all the 3300 * aggregation sessions and our default value. 3301 */ 3302 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3303 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3304 buf_size); 3305 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3306 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3307 3308 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3309 sta->addr, tid); 3310 3311 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3312 } 3313 3314 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3315 struct iwl_mvm_sta *mvmsta, 3316 struct iwl_mvm_tid_data *tid_data) 3317 { 3318 u16 txq_id = tid_data->txq_id; 3319 3320 lockdep_assert_held(&mvm->mutex); 3321 3322 if (iwl_mvm_has_new_tx_api(mvm)) 3323 return; 3324 3325 /* 3326 * The TXQ is marked as reserved only if no traffic came through yet 3327 * This means no traffic has been sent on this TID (agg'd or not), so 3328 * we no longer have use for the queue. Since it hasn't even been 3329 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3330 * free. 3331 */ 3332 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3333 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3334 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3335 } 3336 } 3337 3338 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3339 struct ieee80211_sta *sta, u16 tid) 3340 { 3341 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3342 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3343 u16 txq_id; 3344 int err; 3345 3346 /* 3347 * If mac80211 is cleaning its state, then say that we finished since 3348 * our state has been cleared anyway. 3349 */ 3350 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3351 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3352 return 0; 3353 } 3354 3355 spin_lock_bh(&mvmsta->lock); 3356 3357 txq_id = tid_data->txq_id; 3358 3359 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3360 mvmsta->deflink.sta_id, tid, txq_id, 3361 tid_data->state); 3362 3363 mvmsta->agg_tids &= ~BIT(tid); 3364 3365 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3366 3367 switch (tid_data->state) { 3368 case IWL_AGG_ON: 3369 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3370 3371 IWL_DEBUG_TX_QUEUES(mvm, 3372 "ssn = %d, next_recl = %d\n", 3373 tid_data->ssn, tid_data->next_reclaimed); 3374 3375 tid_data->ssn = 0xffff; 3376 tid_data->state = IWL_AGG_OFF; 3377 spin_unlock_bh(&mvmsta->lock); 3378 3379 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3380 3381 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3382 return 0; 3383 case IWL_AGG_STARTING: 3384 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3385 /* 3386 * The agg session has been stopped before it was set up. This 3387 * can happen when the AddBA timer times out for example. 3388 */ 3389 3390 /* No barriers since we are under mutex */ 3391 lockdep_assert_held(&mvm->mutex); 3392 3393 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3394 tid_data->state = IWL_AGG_OFF; 3395 err = 0; 3396 break; 3397 default: 3398 IWL_ERR(mvm, 3399 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3400 mvmsta->deflink.sta_id, tid, tid_data->state); 3401 IWL_ERR(mvm, 3402 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3403 err = -EINVAL; 3404 } 3405 3406 spin_unlock_bh(&mvmsta->lock); 3407 3408 return err; 3409 } 3410 3411 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3412 struct ieee80211_sta *sta, u16 tid) 3413 { 3414 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3415 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3416 u16 txq_id; 3417 enum iwl_mvm_agg_state old_state; 3418 3419 /* 3420 * First set the agg state to OFF to avoid calling 3421 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3422 */ 3423 spin_lock_bh(&mvmsta->lock); 3424 txq_id = tid_data->txq_id; 3425 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3426 mvmsta->deflink.sta_id, tid, txq_id, 3427 tid_data->state); 3428 old_state = tid_data->state; 3429 tid_data->state = IWL_AGG_OFF; 3430 mvmsta->agg_tids &= ~BIT(tid); 3431 spin_unlock_bh(&mvmsta->lock); 3432 3433 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3434 3435 if (old_state >= IWL_AGG_ON) { 3436 iwl_mvm_drain_sta(mvm, mvmsta, true); 3437 3438 if (iwl_mvm_has_new_tx_api(mvm)) { 3439 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3440 BIT(tid))) 3441 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3442 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3443 } else { 3444 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3445 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3446 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3447 } 3448 3449 iwl_mvm_drain_sta(mvm, mvmsta, false); 3450 3451 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3452 } 3453 3454 return 0; 3455 } 3456 3457 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3458 { 3459 int i, max = -1, max_offs = -1; 3460 3461 lockdep_assert_held(&mvm->mutex); 3462 3463 /* Pick the unused key offset with the highest 'deleted' 3464 * counter. Every time a key is deleted, all the counters 3465 * are incremented and the one that was just deleted is 3466 * reset to zero. Thus, the highest counter is the one 3467 * that was deleted longest ago. Pick that one. 3468 */ 3469 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3470 if (test_bit(i, mvm->fw_key_table)) 3471 continue; 3472 if (mvm->fw_key_deleted[i] > max) { 3473 max = mvm->fw_key_deleted[i]; 3474 max_offs = i; 3475 } 3476 } 3477 3478 if (max_offs < 0) 3479 return STA_KEY_IDX_INVALID; 3480 3481 return max_offs; 3482 } 3483 3484 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3485 struct ieee80211_vif *vif, 3486 struct ieee80211_sta *sta) 3487 { 3488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3489 3490 if (sta) 3491 return iwl_mvm_sta_from_mac80211(sta); 3492 3493 /* 3494 * The device expects GTKs for station interfaces to be 3495 * installed as GTKs for the AP station. If we have no 3496 * station ID, then use AP's station ID. 3497 */ 3498 if (vif->type == NL80211_IFTYPE_STATION && 3499 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) { 3500 u8 sta_id = mvmvif->deflink.ap_sta_id; 3501 3502 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3503 lockdep_is_held(&mvm->mutex)); 3504 3505 /* 3506 * It is possible that the 'sta' parameter is NULL, 3507 * for example when a GTK is removed - the sta_id will then 3508 * be the AP ID, and no station was passed by mac80211. 3509 */ 3510 if (IS_ERR_OR_NULL(sta)) 3511 return NULL; 3512 3513 return iwl_mvm_sta_from_mac80211(sta); 3514 } 3515 3516 return NULL; 3517 } 3518 3519 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3520 { 3521 int i; 3522 3523 for (i = len - 1; i >= 0; i--) { 3524 if (pn1[i] > pn2[i]) 3525 return 1; 3526 if (pn1[i] < pn2[i]) 3527 return -1; 3528 } 3529 3530 return 0; 3531 } 3532 3533 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3534 u32 sta_id, 3535 struct ieee80211_key_conf *key, bool mcast, 3536 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3537 u8 key_offset, bool mfp) 3538 { 3539 union { 3540 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3541 struct iwl_mvm_add_sta_key_cmd cmd; 3542 } u = {}; 3543 __le16 key_flags; 3544 int ret; 3545 u32 status; 3546 u16 keyidx; 3547 u64 pn = 0; 3548 int i, size; 3549 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3550 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3551 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3552 new_api ? 2 : 1); 3553 3554 if (sta_id == IWL_INVALID_STA) 3555 return -EINVAL; 3556 3557 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3558 STA_KEY_FLG_KEYID_MSK; 3559 key_flags = cpu_to_le16(keyidx); 3560 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3561 3562 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU) 3563 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP); 3564 3565 switch (key->cipher) { 3566 case WLAN_CIPHER_SUITE_TKIP: 3567 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3568 if (api_ver >= 2) { 3569 memcpy((void *)&u.cmd.tx_mic_key, 3570 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3571 IWL_MIC_KEY_SIZE); 3572 3573 memcpy((void *)&u.cmd.rx_mic_key, 3574 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3575 IWL_MIC_KEY_SIZE); 3576 pn = atomic64_read(&key->tx_pn); 3577 3578 } else { 3579 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3580 for (i = 0; i < 5; i++) 3581 u.cmd_v1.tkip_rx_ttak[i] = 3582 cpu_to_le16(tkip_p1k[i]); 3583 } 3584 memcpy(u.cmd.common.key, key->key, key->keylen); 3585 break; 3586 case WLAN_CIPHER_SUITE_CCMP: 3587 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3588 memcpy(u.cmd.common.key, key->key, key->keylen); 3589 if (api_ver >= 2) 3590 pn = atomic64_read(&key->tx_pn); 3591 break; 3592 case WLAN_CIPHER_SUITE_WEP104: 3593 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3594 fallthrough; 3595 case WLAN_CIPHER_SUITE_WEP40: 3596 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3597 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3598 break; 3599 case WLAN_CIPHER_SUITE_GCMP_256: 3600 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3601 fallthrough; 3602 case WLAN_CIPHER_SUITE_GCMP: 3603 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3604 memcpy(u.cmd.common.key, key->key, key->keylen); 3605 if (api_ver >= 2) 3606 pn = atomic64_read(&key->tx_pn); 3607 break; 3608 default: 3609 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3610 memcpy(u.cmd.common.key, key->key, key->keylen); 3611 } 3612 3613 if (mcast) 3614 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3615 if (mfp) 3616 key_flags |= cpu_to_le16(STA_KEY_MFP); 3617 3618 u.cmd.common.key_offset = key_offset; 3619 u.cmd.common.key_flags = key_flags; 3620 u.cmd.common.sta_id = sta_id; 3621 3622 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3623 i = 0; 3624 else 3625 i = -1; 3626 3627 for (; i < IEEE80211_NUM_TIDS; i++) { 3628 struct ieee80211_key_seq seq = {}; 3629 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3630 int rx_pn_len = 8; 3631 /* there's a hole at 2/3 in FW format depending on version */ 3632 int hole = api_ver >= 3 ? 0 : 2; 3633 3634 ieee80211_get_key_rx_seq(key, i, &seq); 3635 3636 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3637 rx_pn[0] = seq.tkip.iv16; 3638 rx_pn[1] = seq.tkip.iv16 >> 8; 3639 rx_pn[2 + hole] = seq.tkip.iv32; 3640 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3641 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3642 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3643 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3644 rx_pn = seq.hw.seq; 3645 rx_pn_len = seq.hw.seq_len; 3646 } else { 3647 rx_pn[0] = seq.ccmp.pn[0]; 3648 rx_pn[1] = seq.ccmp.pn[1]; 3649 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3650 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3651 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3652 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3653 } 3654 3655 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3656 rx_pn_len) > 0) 3657 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3658 rx_pn_len); 3659 } 3660 3661 if (api_ver >= 2) { 3662 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3663 size = sizeof(u.cmd); 3664 } else { 3665 size = sizeof(u.cmd_v1); 3666 } 3667 3668 status = ADD_STA_SUCCESS; 3669 if (cmd_flags & CMD_ASYNC) 3670 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3671 &u.cmd); 3672 else 3673 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3674 &u.cmd, &status); 3675 3676 switch (status) { 3677 case ADD_STA_SUCCESS: 3678 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3679 break; 3680 default: 3681 ret = -EIO; 3682 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3683 break; 3684 } 3685 3686 return ret; 3687 } 3688 3689 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3690 struct ieee80211_key_conf *keyconf, 3691 u8 sta_id, bool remove_key) 3692 { 3693 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3694 3695 /* verify the key details match the required command's expectations */ 3696 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3697 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3698 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3699 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3700 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3701 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3702 return -EINVAL; 3703 3704 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3705 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3706 return -EINVAL; 3707 3708 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3709 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3710 3711 if (remove_key) { 3712 /* This is a valid situation for IGTK */ 3713 if (sta_id == IWL_INVALID_STA) 3714 return 0; 3715 3716 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3717 } else { 3718 struct ieee80211_key_seq seq; 3719 const u8 *pn; 3720 3721 switch (keyconf->cipher) { 3722 case WLAN_CIPHER_SUITE_AES_CMAC: 3723 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3724 break; 3725 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3726 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3727 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3728 break; 3729 default: 3730 return -EINVAL; 3731 } 3732 3733 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3734 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3735 igtk_cmd.ctrl_flags |= 3736 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3737 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3738 pn = seq.aes_cmac.pn; 3739 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3740 ((u64) pn[4] << 8) | 3741 ((u64) pn[3] << 16) | 3742 ((u64) pn[2] << 24) | 3743 ((u64) pn[1] << 32) | 3744 ((u64) pn[0] << 40)); 3745 } 3746 3747 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3748 remove_key ? "removing" : "installing", 3749 keyconf->keyidx >= 6 ? "B" : "", 3750 keyconf->keyidx, igtk_cmd.sta_id); 3751 3752 if (!iwl_mvm_has_new_rx_api(mvm)) { 3753 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3754 .ctrl_flags = igtk_cmd.ctrl_flags, 3755 .key_id = igtk_cmd.key_id, 3756 .sta_id = igtk_cmd.sta_id, 3757 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3758 }; 3759 3760 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3761 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3762 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3763 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3764 } 3765 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3766 sizeof(igtk_cmd), &igtk_cmd); 3767 } 3768 3769 3770 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3771 struct ieee80211_vif *vif, 3772 struct ieee80211_sta *sta) 3773 { 3774 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3775 3776 if (sta) 3777 return sta->addr; 3778 3779 if (vif->type == NL80211_IFTYPE_STATION && 3780 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) { 3781 u8 sta_id = mvmvif->deflink.ap_sta_id; 3782 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3783 lockdep_is_held(&mvm->mutex)); 3784 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3785 return NULL; 3786 3787 return sta->addr; 3788 } 3789 3790 3791 return NULL; 3792 } 3793 3794 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3795 struct ieee80211_vif *vif, 3796 struct ieee80211_sta *sta, 3797 struct ieee80211_key_conf *keyconf, 3798 u8 key_offset, 3799 bool mcast) 3800 { 3801 const u8 *addr; 3802 struct ieee80211_key_seq seq; 3803 u16 p1k[5]; 3804 u32 sta_id; 3805 bool mfp = false; 3806 3807 if (sta) { 3808 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3809 3810 sta_id = mvm_sta->deflink.sta_id; 3811 mfp = sta->mfp; 3812 } else if (vif->type == NL80211_IFTYPE_AP && 3813 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3814 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3815 3816 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3817 } else { 3818 IWL_ERR(mvm, "Failed to find station id\n"); 3819 return -EINVAL; 3820 } 3821 3822 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3823 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3824 if (!addr) { 3825 IWL_ERR(mvm, "Failed to find mac address\n"); 3826 return -EINVAL; 3827 } 3828 3829 /* get phase 1 key from mac80211 */ 3830 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3831 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3832 3833 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3834 seq.tkip.iv32, p1k, 0, key_offset, 3835 mfp); 3836 } 3837 3838 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3839 0, NULL, 0, key_offset, mfp); 3840 } 3841 3842 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3843 struct ieee80211_vif *vif, 3844 struct ieee80211_sta *sta, 3845 struct ieee80211_key_conf *keyconf, 3846 u8 key_offset) 3847 { 3848 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3849 struct iwl_mvm_sta *mvm_sta; 3850 u8 sta_id = IWL_INVALID_STA; 3851 int ret; 3852 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3853 3854 lockdep_assert_held(&mvm->mutex); 3855 3856 if (vif->type != NL80211_IFTYPE_AP || 3857 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3858 /* Get the station id from the mvm local station table */ 3859 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3860 if (!mvm_sta) { 3861 IWL_ERR(mvm, "Failed to find station\n"); 3862 return -EINVAL; 3863 } 3864 sta_id = mvm_sta->deflink.sta_id; 3865 3866 /* 3867 * It is possible that the 'sta' parameter is NULL, and thus 3868 * there is a need to retrieve the sta from the local station 3869 * table. 3870 */ 3871 if (!sta) { 3872 sta = rcu_dereference_protected( 3873 mvm->fw_id_to_mac_id[sta_id], 3874 lockdep_is_held(&mvm->mutex)); 3875 if (IS_ERR_OR_NULL(sta)) { 3876 IWL_ERR(mvm, "Invalid station id\n"); 3877 return -EINVAL; 3878 } 3879 } 3880 3881 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3882 return -EINVAL; 3883 } else { 3884 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3885 3886 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3887 } 3888 3889 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3890 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3891 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3892 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3893 goto end; 3894 } 3895 3896 /* If the key_offset is not pre-assigned, we need to find a 3897 * new offset to use. In normal cases, the offset is not 3898 * pre-assigned, but during HW_RESTART we want to reuse the 3899 * same indices, so we pass them when this function is called. 3900 * 3901 * In D3 entry, we need to hardcoded the indices (because the 3902 * firmware hardcodes the PTK offset to 0). In this case, we 3903 * need to make sure we don't overwrite the hw_key_idx in the 3904 * keyconf structure, because otherwise we cannot configure 3905 * the original ones back when resuming. 3906 */ 3907 if (key_offset == STA_KEY_IDX_INVALID) { 3908 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3909 if (key_offset == STA_KEY_IDX_INVALID) 3910 return -ENOSPC; 3911 keyconf->hw_key_idx = key_offset; 3912 } 3913 3914 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3915 if (ret) 3916 goto end; 3917 3918 /* 3919 * For WEP, the same key is used for multicast and unicast. Upload it 3920 * again, using the same key offset, and now pointing the other one 3921 * to the same key slot (offset). 3922 * If this fails, remove the original as well. 3923 */ 3924 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3925 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3926 sta) { 3927 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3928 key_offset, !mcast); 3929 if (ret) { 3930 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3931 goto end; 3932 } 3933 } 3934 3935 __set_bit(key_offset, mvm->fw_key_table); 3936 3937 end: 3938 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3939 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3940 sta ? sta->addr : zero_addr, ret); 3941 return ret; 3942 } 3943 3944 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3945 struct ieee80211_vif *vif, 3946 struct ieee80211_sta *sta, 3947 struct ieee80211_key_conf *keyconf) 3948 { 3949 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3950 struct iwl_mvm_sta *mvm_sta; 3951 u8 sta_id = IWL_INVALID_STA; 3952 int ret, i; 3953 3954 lockdep_assert_held(&mvm->mutex); 3955 3956 /* Get the station from the mvm local station table */ 3957 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3958 if (mvm_sta) 3959 sta_id = mvm_sta->deflink.sta_id; 3960 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3961 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3962 3963 3964 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3965 keyconf->keyidx, sta_id); 3966 3967 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3968 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3969 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3970 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3971 3972 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3973 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3974 keyconf->hw_key_idx); 3975 return -ENOENT; 3976 } 3977 3978 /* track which key was deleted last */ 3979 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3980 if (mvm->fw_key_deleted[i] < U8_MAX) 3981 mvm->fw_key_deleted[i]++; 3982 } 3983 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3984 3985 if (sta && !mvm_sta) { 3986 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3987 return 0; 3988 } 3989 3990 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3991 if (ret) 3992 return ret; 3993 3994 /* delete WEP key twice to get rid of (now useless) offset */ 3995 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3996 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3997 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3998 3999 return ret; 4000 } 4001 4002 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 4003 struct ieee80211_vif *vif, 4004 struct ieee80211_key_conf *keyconf, 4005 struct ieee80211_sta *sta, u32 iv32, 4006 u16 *phase1key) 4007 { 4008 struct iwl_mvm_sta *mvm_sta; 4009 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4010 bool mfp = sta ? sta->mfp : false; 4011 4012 rcu_read_lock(); 4013 4014 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4015 if (WARN_ON_ONCE(!mvm_sta)) 4016 goto unlock; 4017 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4018 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4019 mfp); 4020 4021 unlock: 4022 rcu_read_unlock(); 4023 } 4024 4025 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4026 struct ieee80211_sta *sta) 4027 { 4028 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4029 struct iwl_mvm_add_sta_cmd cmd = { 4030 .add_modify = STA_MODE_MODIFY, 4031 .sta_id = mvmsta->deflink.sta_id, 4032 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4033 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4034 }; 4035 int ret; 4036 4037 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4038 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4039 if (ret) 4040 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4041 } 4042 4043 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4044 struct ieee80211_sta *sta, 4045 enum ieee80211_frame_release_type reason, 4046 u16 cnt, u16 tids, bool more_data, 4047 bool single_sta_queue) 4048 { 4049 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4050 struct iwl_mvm_add_sta_cmd cmd = { 4051 .add_modify = STA_MODE_MODIFY, 4052 .sta_id = mvmsta->deflink.sta_id, 4053 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4054 .sleep_tx_count = cpu_to_le16(cnt), 4055 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4056 }; 4057 int tid, ret; 4058 unsigned long _tids = tids; 4059 4060 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4061 * Note that this field is reserved and unused by firmware not 4062 * supporting GO uAPSD, so it's safe to always do this. 4063 */ 4064 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4065 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4066 4067 /* If we're releasing frames from aggregation or dqa queues then check 4068 * if all the queues that we're releasing frames from, combined, have: 4069 * - more frames than the service period, in which case more_data 4070 * needs to be set 4071 * - fewer than 'cnt' frames, in which case we need to adjust the 4072 * firmware command (but do that unconditionally) 4073 */ 4074 if (single_sta_queue) { 4075 int remaining = cnt; 4076 int sleep_tx_count; 4077 4078 spin_lock_bh(&mvmsta->lock); 4079 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4080 struct iwl_mvm_tid_data *tid_data; 4081 u16 n_queued; 4082 4083 tid_data = &mvmsta->tid_data[tid]; 4084 4085 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4086 if (n_queued > remaining) { 4087 more_data = true; 4088 remaining = 0; 4089 break; 4090 } 4091 remaining -= n_queued; 4092 } 4093 sleep_tx_count = cnt - remaining; 4094 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4095 mvmsta->sleep_tx_count = sleep_tx_count; 4096 spin_unlock_bh(&mvmsta->lock); 4097 4098 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4099 if (WARN_ON(cnt - remaining == 0)) { 4100 ieee80211_sta_eosp(sta); 4101 return; 4102 } 4103 } 4104 4105 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4106 if (more_data) 4107 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4108 4109 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4110 mvmsta->next_status_eosp = true; 4111 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4112 } else { 4113 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4114 } 4115 4116 /* block the Tx queues until the FW updated the sleep Tx count */ 4117 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4118 CMD_ASYNC | CMD_BLOCK_TXQS, 4119 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4120 if (ret) 4121 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4122 } 4123 4124 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4125 struct iwl_rx_cmd_buffer *rxb) 4126 { 4127 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4128 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4129 struct ieee80211_sta *sta; 4130 u32 sta_id = le32_to_cpu(notif->sta_id); 4131 4132 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4133 return; 4134 4135 rcu_read_lock(); 4136 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4137 if (!IS_ERR_OR_NULL(sta)) 4138 ieee80211_sta_eosp(sta); 4139 rcu_read_unlock(); 4140 } 4141 4142 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4143 struct iwl_mvm_sta *mvmsta, 4144 bool disable) 4145 { 4146 struct iwl_mvm_add_sta_cmd cmd = { 4147 .add_modify = STA_MODE_MODIFY, 4148 .sta_id = mvmsta->deflink.sta_id, 4149 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4150 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4151 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4152 }; 4153 int ret; 4154 4155 if (mvm->mld_api_is_used) { 4156 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4157 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4158 return; 4159 } 4160 4161 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4162 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4163 if (ret) 4164 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4165 } 4166 4167 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4168 struct ieee80211_sta *sta, 4169 bool disable) 4170 { 4171 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4172 4173 if (mvm->mld_api_is_used) { 4174 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4175 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4176 return; 4177 } 4178 4179 spin_lock_bh(&mvm_sta->lock); 4180 4181 if (mvm_sta->disable_tx == disable) { 4182 spin_unlock_bh(&mvm_sta->lock); 4183 return; 4184 } 4185 4186 mvm_sta->disable_tx = disable; 4187 4188 /* 4189 * If sta PS state is handled by mac80211, tell it to start/stop 4190 * queuing tx for this station. 4191 */ 4192 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4193 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4194 4195 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4196 4197 spin_unlock_bh(&mvm_sta->lock); 4198 } 4199 4200 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4201 struct iwl_mvm_vif *mvmvif, 4202 struct iwl_mvm_int_sta *sta, 4203 bool disable) 4204 { 4205 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4206 struct iwl_mvm_add_sta_cmd cmd = { 4207 .add_modify = STA_MODE_MODIFY, 4208 .sta_id = sta->sta_id, 4209 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4210 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4211 .mac_id_n_color = cpu_to_le32(id), 4212 }; 4213 int ret; 4214 4215 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4216 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4217 if (ret) 4218 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4219 } 4220 4221 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4222 struct iwl_mvm_vif *mvmvif, 4223 bool disable) 4224 { 4225 struct ieee80211_sta *sta; 4226 struct iwl_mvm_sta *mvm_sta; 4227 int i; 4228 4229 if (mvm->mld_api_is_used) { 4230 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4231 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, 4232 disable); 4233 return; 4234 } 4235 4236 rcu_read_lock(); 4237 4238 /* Block/unblock all the stations of the given mvmvif */ 4239 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4240 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4241 if (IS_ERR_OR_NULL(sta)) 4242 continue; 4243 4244 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4245 if (mvm_sta->mac_id_n_color != 4246 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4247 continue; 4248 4249 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4250 } 4251 4252 rcu_read_unlock(); 4253 4254 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4255 return; 4256 4257 /* Need to block/unblock also multicast station */ 4258 if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA) 4259 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4260 &mvmvif->deflink.mcast_sta, 4261 disable); 4262 4263 /* 4264 * Only unblock the broadcast station (FW blocks it for immediate 4265 * quiet, not the driver) 4266 */ 4267 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA) 4268 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4269 &mvmvif->deflink.bcast_sta, 4270 disable); 4271 } 4272 4273 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4274 { 4275 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4276 struct iwl_mvm_sta *mvmsta; 4277 4278 rcu_read_lock(); 4279 4280 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4281 4282 if (mvmsta) 4283 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4284 4285 rcu_read_unlock(); 4286 } 4287 4288 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4289 { 4290 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4291 4292 /* 4293 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4294 * to align the wrap around of ssn so we compare relevant values. 4295 */ 4296 if (mvm->trans->mac_cfg->gen2) 4297 sn &= 0xff; 4298 4299 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4300 } 4301 4302 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4303 struct ieee80211_vif *vif, 4304 u32 id) 4305 { 4306 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4307 .id = cpu_to_le32(id), 4308 }; 4309 int ret; 4310 4311 ret = iwl_mvm_send_cmd_pdu(mvm, 4312 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4313 CMD_ASYNC, 4314 sizeof(cancel_channel_switch_cmd), 4315 &cancel_channel_switch_cmd); 4316 if (ret) 4317 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4318 } 4319