1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 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_MVM_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_MVM_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 if (link_sta->ht_cap.ht_supported) 64 mpdu_dens = link_sta->ht_cap.ampdu_density; 65 66 if (link_conf->chandef.chan->band == 67 NL80211_BAND_6GHZ) { 68 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 69 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 70 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 71 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 72 } else if (link_sta->vht_cap.vht_supported) { 73 agg_size = link_sta->vht_cap.cap & 74 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 75 agg_size >>= 76 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 77 } else if (link_sta->ht_cap.ht_supported) { 78 agg_size = link_sta->ht_cap.ampdu_factor; 79 } 80 81 /* D6.0 10.12.2 A-MPDU length limit rules 82 * A STA indicates the maximum length of the A-MPDU preEOF padding 83 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 84 * Exponent field in its HT Capabilities, VHT Capabilities, 85 * and HE 6 GHz Band Capabilities elements (if present) and the 86 * Maximum AMPDU Length Exponent Extension field in its HE 87 * Capabilities element 88 */ 89 if (link_sta->he_cap.has_he) 90 agg_size += 91 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 92 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 93 94 /* Limit to max A-MPDU supported by FW */ 95 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 96 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 97 STA_FLG_MAX_AGG_SIZE_SHIFT); 98 99 *_agg_size = agg_size; 100 return mpdu_dens; 101 } 102 103 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 104 { 105 u8 uapsd_acs = 0; 106 107 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 108 uapsd_acs |= BIT(AC_BK); 109 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 110 uapsd_acs |= BIT(AC_BE); 111 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 112 uapsd_acs |= BIT(AC_VI); 113 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 114 uapsd_acs |= BIT(AC_VO); 115 116 return uapsd_acs | uapsd_acs << 4; 117 } 118 119 /* send station add/update command to firmware */ 120 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 121 bool update, unsigned int flags) 122 { 123 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 124 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 125 .sta_id = mvm_sta->deflink.sta_id, 126 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 127 .add_modify = update ? 1 : 0, 128 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 129 STA_FLG_MIMO_EN_MSK | 130 STA_FLG_RTS_MIMO_PROT), 131 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 132 }; 133 int ret; 134 u32 status; 135 u32 agg_size = 0, mpdu_dens = 0; 136 137 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 138 add_sta_cmd.station_type = mvm_sta->sta_type; 139 140 if (!update || (flags & STA_MODIFY_QUEUES)) { 141 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 142 143 if (!iwl_mvm_has_new_tx_api(mvm)) { 144 add_sta_cmd.tfd_queue_msk = 145 cpu_to_le32(mvm_sta->tfd_queue_msk); 146 147 if (flags & STA_MODIFY_QUEUES) 148 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 149 } else { 150 WARN_ON(flags & STA_MODIFY_QUEUES); 151 } 152 } 153 154 switch (sta->deflink.bandwidth) { 155 case IEEE80211_STA_RX_BW_320: 156 case IEEE80211_STA_RX_BW_160: 157 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 158 fallthrough; 159 case IEEE80211_STA_RX_BW_80: 160 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 161 fallthrough; 162 case IEEE80211_STA_RX_BW_40: 163 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 164 fallthrough; 165 case IEEE80211_STA_RX_BW_20: 166 if (sta->deflink.ht_cap.ht_supported) 167 add_sta_cmd.station_flags |= 168 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 169 break; 170 } 171 172 switch (sta->deflink.rx_nss) { 173 case 1: 174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 175 break; 176 case 2: 177 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 178 break; 179 case 3 ... 8: 180 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 181 break; 182 } 183 184 switch (sta->deflink.smps_mode) { 185 case IEEE80211_SMPS_AUTOMATIC: 186 case IEEE80211_SMPS_NUM_MODES: 187 WARN_ON(1); 188 break; 189 case IEEE80211_SMPS_STATIC: 190 /* override NSS */ 191 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 192 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 193 break; 194 case IEEE80211_SMPS_DYNAMIC: 195 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 196 break; 197 case IEEE80211_SMPS_OFF: 198 /* nothing */ 199 break; 200 } 201 202 if (sta->deflink.ht_cap.ht_supported || 203 mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) 204 add_sta_cmd.station_flags_msk |= 205 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 206 STA_FLG_AGG_MPDU_DENS_MSK); 207 208 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 209 &mvm_sta->vif->bss_conf, 210 &agg_size); 211 add_sta_cmd.station_flags |= 212 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 213 add_sta_cmd.station_flags |= 214 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 215 216 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 217 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 218 219 if (sta->wme) { 220 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 221 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 222 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 223 } 224 225 status = ADD_STA_SUCCESS; 226 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 227 iwl_mvm_add_sta_cmd_size(mvm), 228 &add_sta_cmd, &status); 229 if (ret) 230 return ret; 231 232 switch (status & IWL_ADD_STA_STATUS_MASK) { 233 case ADD_STA_SUCCESS: 234 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 235 break; 236 default: 237 ret = -EIO; 238 IWL_ERR(mvm, "ADD_STA failed\n"); 239 break; 240 } 241 242 return ret; 243 } 244 245 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 246 { 247 struct iwl_mvm_baid_data *data = 248 from_timer(data, t, session_timer); 249 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 250 struct iwl_mvm_baid_data *ba_data; 251 struct ieee80211_sta *sta; 252 struct iwl_mvm_sta *mvm_sta; 253 unsigned long timeout; 254 255 rcu_read_lock(); 256 257 ba_data = rcu_dereference(*rcu_ptr); 258 259 if (WARN_ON(!ba_data)) 260 goto unlock; 261 262 if (!ba_data->timeout) 263 goto unlock; 264 265 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 266 if (time_is_after_jiffies(timeout)) { 267 mod_timer(&ba_data->session_timer, timeout); 268 goto unlock; 269 } 270 271 /* Timer expired */ 272 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 273 274 /* 275 * sta should be valid unless the following happens: 276 * The firmware asserts which triggers a reconfig flow, but 277 * the reconfig fails before we set the pointer to sta into 278 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 279 * A-MDPU and hence the timer continues to run. Then, the 280 * timer expires and sta is NULL. 281 */ 282 if (!sta) 283 goto unlock; 284 285 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 286 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 287 sta->addr, ba_data->tid); 288 unlock: 289 rcu_read_unlock(); 290 } 291 292 /* Disable aggregations for a bitmap of TIDs for a given station */ 293 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 294 unsigned long disable_agg_tids, 295 bool remove_queue) 296 { 297 struct iwl_mvm_add_sta_cmd cmd = {}; 298 struct ieee80211_sta *sta; 299 struct iwl_mvm_sta *mvmsta; 300 u32 status; 301 u8 sta_id; 302 303 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 304 return -EINVAL; 305 306 sta_id = mvm->queue_info[queue].ra_sta_id; 307 308 rcu_read_lock(); 309 310 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 311 312 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 313 rcu_read_unlock(); 314 return -EINVAL; 315 } 316 317 mvmsta = iwl_mvm_sta_from_mac80211(sta); 318 319 mvmsta->tid_disable_agg |= disable_agg_tids; 320 321 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 322 cmd.sta_id = mvmsta->deflink.sta_id; 323 cmd.add_modify = STA_MODE_MODIFY; 324 cmd.modify_mask = STA_MODIFY_QUEUES; 325 if (disable_agg_tids) 326 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 327 if (remove_queue) 328 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 329 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 330 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 331 332 rcu_read_unlock(); 333 334 /* Notify FW of queue removal from the STA queues */ 335 status = ADD_STA_SUCCESS; 336 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 337 iwl_mvm_add_sta_cmd_size(mvm), 338 &cmd, &status); 339 } 340 341 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 342 int sta_id, u16 *queueptr, u8 tid) 343 { 344 int queue = *queueptr; 345 struct iwl_scd_txq_cfg_cmd cmd = { 346 .scd_queue = queue, 347 .action = SCD_CFG_DISABLE_QUEUE, 348 }; 349 int ret; 350 351 lockdep_assert_held(&mvm->mutex); 352 353 if (iwl_mvm_has_new_tx_api(mvm)) { 354 if (mvm->sta_remove_requires_queue_remove) { 355 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 356 SCD_QUEUE_CONFIG_CMD); 357 struct iwl_scd_queue_cfg_cmd remove_cmd = { 358 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 359 .u.remove.tid = cpu_to_le32(tid), 360 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 361 }; 362 363 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 364 sizeof(remove_cmd), 365 &remove_cmd); 366 } else { 367 ret = 0; 368 } 369 370 iwl_trans_txq_free(mvm->trans, queue); 371 *queueptr = IWL_MVM_INVALID_QUEUE; 372 373 return ret; 374 } 375 376 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 377 return 0; 378 379 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 380 381 cmd.action = mvm->queue_info[queue].tid_bitmap ? 382 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 383 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 384 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 385 386 IWL_DEBUG_TX_QUEUES(mvm, 387 "Disabling TXQ #%d tids=0x%x\n", 388 queue, 389 mvm->queue_info[queue].tid_bitmap); 390 391 /* If the queue is still enabled - nothing left to do in this func */ 392 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 393 return 0; 394 395 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 396 cmd.tid = mvm->queue_info[queue].txq_tid; 397 398 /* Make sure queue info is correct even though we overwrite it */ 399 WARN(mvm->queue_info[queue].tid_bitmap, 400 "TXQ #%d info out-of-sync - tids=0x%x\n", 401 queue, mvm->queue_info[queue].tid_bitmap); 402 403 /* If we are here - the queue is freed and we can zero out these vals */ 404 mvm->queue_info[queue].tid_bitmap = 0; 405 406 if (sta) { 407 struct iwl_mvm_txq *mvmtxq = 408 iwl_mvm_txq_from_tid(sta, tid); 409 410 spin_lock_bh(&mvm->add_stream_lock); 411 list_del_init(&mvmtxq->list); 412 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 413 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 414 spin_unlock_bh(&mvm->add_stream_lock); 415 } 416 417 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 418 mvm->queue_info[queue].reserved = false; 419 420 iwl_trans_txq_disable(mvm->trans, queue, false); 421 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 422 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 423 424 if (ret) 425 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 426 queue, ret); 427 return ret; 428 } 429 430 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 431 { 432 struct ieee80211_sta *sta; 433 struct iwl_mvm_sta *mvmsta; 434 unsigned long tid_bitmap; 435 unsigned long agg_tids = 0; 436 u8 sta_id; 437 int tid; 438 439 lockdep_assert_held(&mvm->mutex); 440 441 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 442 return -EINVAL; 443 444 sta_id = mvm->queue_info[queue].ra_sta_id; 445 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 446 447 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 448 lockdep_is_held(&mvm->mutex)); 449 450 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 451 return -EINVAL; 452 453 mvmsta = iwl_mvm_sta_from_mac80211(sta); 454 455 spin_lock_bh(&mvmsta->lock); 456 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 457 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 458 agg_tids |= BIT(tid); 459 } 460 spin_unlock_bh(&mvmsta->lock); 461 462 return agg_tids; 463 } 464 465 /* 466 * Remove a queue from a station's resources. 467 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 468 * doesn't disable the queue 469 */ 470 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 471 { 472 struct ieee80211_sta *sta; 473 struct iwl_mvm_sta *mvmsta; 474 unsigned long tid_bitmap; 475 unsigned long disable_agg_tids = 0; 476 u8 sta_id; 477 int tid; 478 479 lockdep_assert_held(&mvm->mutex); 480 481 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 482 return -EINVAL; 483 484 sta_id = mvm->queue_info[queue].ra_sta_id; 485 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 486 487 rcu_read_lock(); 488 489 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 490 491 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 492 rcu_read_unlock(); 493 return 0; 494 } 495 496 mvmsta = iwl_mvm_sta_from_mac80211(sta); 497 498 spin_lock_bh(&mvmsta->lock); 499 /* Unmap MAC queues and TIDs from this queue */ 500 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 501 struct iwl_mvm_txq *mvmtxq = 502 iwl_mvm_txq_from_tid(sta, tid); 503 504 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 505 disable_agg_tids |= BIT(tid); 506 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 507 508 spin_lock_bh(&mvm->add_stream_lock); 509 list_del_init(&mvmtxq->list); 510 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 511 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 512 spin_unlock_bh(&mvm->add_stream_lock); 513 } 514 515 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 516 spin_unlock_bh(&mvmsta->lock); 517 518 rcu_read_unlock(); 519 520 /* 521 * The TX path may have been using this TXQ_ID from the tid_data, 522 * so make sure it's no longer running so that we can safely reuse 523 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 524 * above, but nothing guarantees we've stopped using them. Thus, 525 * without this, we could get to iwl_mvm_disable_txq() and remove 526 * the queue while still sending frames to it. 527 */ 528 synchronize_net(); 529 530 return disable_agg_tids; 531 } 532 533 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 534 struct ieee80211_sta *old_sta, 535 u8 new_sta_id) 536 { 537 struct iwl_mvm_sta *mvmsta; 538 u8 sta_id, tid; 539 unsigned long disable_agg_tids = 0; 540 bool same_sta; 541 u16 queue_tmp = queue; 542 int ret; 543 544 lockdep_assert_held(&mvm->mutex); 545 546 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 547 return -EINVAL; 548 549 sta_id = mvm->queue_info[queue].ra_sta_id; 550 tid = mvm->queue_info[queue].txq_tid; 551 552 same_sta = sta_id == new_sta_id; 553 554 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 555 if (WARN_ON(!mvmsta)) 556 return -EINVAL; 557 558 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 559 /* Disable the queue */ 560 if (disable_agg_tids) 561 iwl_mvm_invalidate_sta_queue(mvm, queue, 562 disable_agg_tids, false); 563 564 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 565 if (ret) { 566 IWL_ERR(mvm, 567 "Failed to free inactive queue %d (ret=%d)\n", 568 queue, ret); 569 570 return ret; 571 } 572 573 /* If TXQ is allocated to another STA, update removal in FW */ 574 if (!same_sta) 575 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 576 577 return 0; 578 } 579 580 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 581 unsigned long tfd_queue_mask, u8 ac) 582 { 583 int queue = 0; 584 u8 ac_to_queue[IEEE80211_NUM_ACS]; 585 int i; 586 587 /* 588 * This protects us against grabbing a queue that's being reconfigured 589 * by the inactivity checker. 590 */ 591 lockdep_assert_held(&mvm->mutex); 592 593 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 594 return -EINVAL; 595 596 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 597 598 /* See what ACs the existing queues for this STA have */ 599 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 600 /* Only DATA queues can be shared */ 601 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 602 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 603 continue; 604 605 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 606 } 607 608 /* 609 * The queue to share is chosen only from DATA queues as follows (in 610 * descending priority): 611 * 1. An AC_BE queue 612 * 2. Same AC queue 613 * 3. Highest AC queue that is lower than new AC 614 * 4. Any existing AC (there always is at least 1 DATA queue) 615 */ 616 617 /* Priority 1: An AC_BE queue */ 618 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 619 queue = ac_to_queue[IEEE80211_AC_BE]; 620 /* Priority 2: Same AC queue */ 621 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 622 queue = ac_to_queue[ac]; 623 /* Priority 3a: If new AC is VO and VI exists - use VI */ 624 else if (ac == IEEE80211_AC_VO && 625 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 626 queue = ac_to_queue[IEEE80211_AC_VI]; 627 /* Priority 3b: No BE so only AC less than the new one is BK */ 628 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 629 queue = ac_to_queue[IEEE80211_AC_BK]; 630 /* Priority 4a: No BE nor BK - use VI if exists */ 631 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 632 queue = ac_to_queue[IEEE80211_AC_VI]; 633 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 634 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 635 queue = ac_to_queue[IEEE80211_AC_VO]; 636 637 /* Make sure queue found (or not) is legal */ 638 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 639 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 640 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 641 IWL_ERR(mvm, "No DATA queues available to share\n"); 642 return -ENOSPC; 643 } 644 645 return queue; 646 } 647 648 /* Re-configure the SCD for a queue that has already been configured */ 649 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 650 int sta_id, int tid, int frame_limit, u16 ssn) 651 { 652 struct iwl_scd_txq_cfg_cmd cmd = { 653 .scd_queue = queue, 654 .action = SCD_CFG_ENABLE_QUEUE, 655 .window = frame_limit, 656 .sta_id = sta_id, 657 .ssn = cpu_to_le16(ssn), 658 .tx_fifo = fifo, 659 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 660 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 661 .tid = tid, 662 }; 663 int ret; 664 665 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 666 return -EINVAL; 667 668 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 669 "Trying to reconfig unallocated queue %d\n", queue)) 670 return -ENXIO; 671 672 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 673 674 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 675 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 676 queue, fifo, ret); 677 678 return ret; 679 } 680 681 /* 682 * If a given queue has a higher AC than the TID stream that is being compared 683 * to, the queue needs to be redirected to the lower AC. This function does that 684 * in such a case, otherwise - if no redirection required - it does nothing, 685 * unless the %force param is true. 686 */ 687 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 688 int ac, int ssn, unsigned int wdg_timeout, 689 bool force, struct iwl_mvm_txq *txq) 690 { 691 struct iwl_scd_txq_cfg_cmd cmd = { 692 .scd_queue = queue, 693 .action = SCD_CFG_DISABLE_QUEUE, 694 }; 695 bool shared_queue; 696 int ret; 697 698 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 699 return -EINVAL; 700 701 /* 702 * If the AC is lower than current one - FIFO needs to be redirected to 703 * the lowest one of the streams in the queue. Check if this is needed 704 * here. 705 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 706 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 707 * we need to check if the numerical value of X is LARGER than of Y. 708 */ 709 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 710 IWL_DEBUG_TX_QUEUES(mvm, 711 "No redirection needed on TXQ #%d\n", 712 queue); 713 return 0; 714 } 715 716 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 717 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 718 cmd.tid = mvm->queue_info[queue].txq_tid; 719 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 720 721 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 722 queue, iwl_mvm_ac_to_tx_fifo[ac]); 723 724 /* Stop the queue and wait for it to empty */ 725 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 726 727 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 728 if (ret) { 729 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 730 queue); 731 ret = -EIO; 732 goto out; 733 } 734 735 /* Before redirecting the queue we need to de-activate it */ 736 iwl_trans_txq_disable(mvm->trans, queue, false); 737 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 738 if (ret) 739 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 740 ret); 741 742 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 743 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 744 745 /* Update the TID "owner" of the queue */ 746 mvm->queue_info[queue].txq_tid = tid; 747 748 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 749 750 /* Redirect to lower AC */ 751 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 752 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 753 754 /* Update AC marking of the queue */ 755 mvm->queue_info[queue].mac80211_ac = ac; 756 757 /* 758 * Mark queue as shared in transport if shared 759 * Note this has to be done after queue enablement because enablement 760 * can also set this value, and there is no indication there to shared 761 * queues 762 */ 763 if (shared_queue) 764 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 765 766 out: 767 /* Continue using the queue */ 768 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 769 770 return ret; 771 } 772 773 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 774 u8 minq, u8 maxq) 775 { 776 int i; 777 778 lockdep_assert_held(&mvm->mutex); 779 780 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 781 "max queue %d >= num_of_queues (%d)", maxq, 782 mvm->trans->trans_cfg->base_params->num_of_queues)) 783 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 784 785 /* This should not be hit with new TX path */ 786 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 787 return -ENOSPC; 788 789 /* Start by looking for a free queue */ 790 for (i = minq; i <= maxq; i++) 791 if (mvm->queue_info[i].tid_bitmap == 0 && 792 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 793 return i; 794 795 return -ENOSPC; 796 } 797 798 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 799 { 800 int max_size = IWL_DEFAULT_QUEUE_SIZE; 801 unsigned int link_id; 802 803 /* this queue isn't used for traffic (cab_queue) */ 804 if (!sta) 805 return IWL_MGMT_QUEUE_SIZE; 806 807 rcu_read_lock(); 808 809 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 810 struct ieee80211_link_sta *link = 811 rcu_dereference(sta->link[link_id]); 812 813 if (!link) 814 continue; 815 816 /* support for 1k ba size */ 817 if (link->eht_cap.has_eht && 818 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 819 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 820 821 /* support for 256 ba size */ 822 if (link->he_cap.has_he && 823 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 824 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 825 } 826 827 rcu_read_unlock(); 828 return max_size; 829 } 830 831 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 832 struct ieee80211_sta *sta, 833 u8 sta_id, u8 tid, unsigned int timeout) 834 { 835 int queue, size; 836 u32 sta_mask = 0; 837 838 if (tid == IWL_MAX_TID_COUNT) { 839 tid = IWL_MGMT_TID; 840 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 841 mvm->trans->cfg->min_txq_size); 842 } else { 843 size = iwl_mvm_get_queue_size(sta); 844 } 845 846 /* take the min with bc tbl entries allowed */ 847 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 848 849 /* size needs to be power of 2 values for calculating read/write pointers */ 850 size = rounddown_pow_of_two(size); 851 852 if (sta) { 853 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 854 unsigned int link_id; 855 856 for (link_id = 0; 857 link_id < ARRAY_SIZE(mvmsta->link); 858 link_id++) { 859 struct iwl_mvm_link_sta *link = 860 rcu_dereference_protected(mvmsta->link[link_id], 861 lockdep_is_held(&mvm->mutex)); 862 863 if (!link) 864 continue; 865 866 sta_mask |= BIT(link->sta_id); 867 } 868 } else { 869 sta_mask |= BIT(sta_id); 870 } 871 872 if (!sta_mask) 873 return -EINVAL; 874 875 do { 876 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 877 tid, size, timeout); 878 879 if (queue < 0) 880 IWL_DEBUG_TX_QUEUES(mvm, 881 "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n", 882 size, sta_mask, tid, queue); 883 size /= 2; 884 } while (queue < 0 && size >= 16); 885 886 if (queue < 0) 887 return queue; 888 889 IWL_DEBUG_TX_QUEUES(mvm, "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, false, false); 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, false, false); 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_MVM_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_MVM_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, false, false); 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 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1491 { 1492 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1493 add_stream_wk); 1494 1495 mutex_lock(&mvm->mutex); 1496 1497 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1498 1499 while (!list_empty(&mvm->add_stream_txqs)) { 1500 struct iwl_mvm_txq *mvmtxq; 1501 struct ieee80211_txq *txq; 1502 u8 tid; 1503 1504 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1505 struct iwl_mvm_txq, list); 1506 1507 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1508 drv_priv); 1509 tid = txq->tid; 1510 if (tid == IEEE80211_NUM_TIDS) 1511 tid = IWL_MAX_TID_COUNT; 1512 1513 /* 1514 * We can't really do much here, but if this fails we can't 1515 * transmit anyway - so just don't transmit the frame etc. 1516 * and let them back up ... we've tried our best to allocate 1517 * a queue in the function itself. 1518 */ 1519 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1520 spin_lock_bh(&mvm->add_stream_lock); 1521 list_del_init(&mvmtxq->list); 1522 spin_unlock_bh(&mvm->add_stream_lock); 1523 continue; 1524 } 1525 1526 /* now we're ready, any remaining races/concurrency will be 1527 * handled in iwl_mvm_mac_itxq_xmit() 1528 */ 1529 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1530 1531 local_bh_disable(); 1532 spin_lock(&mvm->add_stream_lock); 1533 list_del_init(&mvmtxq->list); 1534 spin_unlock(&mvm->add_stream_lock); 1535 1536 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1537 local_bh_enable(); 1538 } 1539 1540 mutex_unlock(&mvm->mutex); 1541 } 1542 1543 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1544 struct ieee80211_sta *sta, 1545 enum nl80211_iftype vif_type) 1546 { 1547 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1548 int queue; 1549 1550 /* queue reserving is disabled on new TX path */ 1551 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1552 return 0; 1553 1554 /* run the general cleanup/unsharing of queues */ 1555 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1556 1557 /* Make sure we have free resources for this STA */ 1558 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1559 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1560 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1561 IWL_MVM_QUEUE_FREE)) 1562 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1563 else 1564 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1565 IWL_MVM_DQA_MIN_DATA_QUEUE, 1566 IWL_MVM_DQA_MAX_DATA_QUEUE); 1567 if (queue < 0) { 1568 /* try again - this time kick out a queue if needed */ 1569 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1570 if (queue < 0) { 1571 IWL_ERR(mvm, "No available queues for new station\n"); 1572 return -ENOSPC; 1573 } 1574 } 1575 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1576 1577 mvmsta->reserved_queue = queue; 1578 1579 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1580 queue, mvmsta->deflink.sta_id); 1581 1582 return 0; 1583 } 1584 1585 /* 1586 * In DQA mode, after a HW restart the queues should be allocated as before, in 1587 * order to avoid race conditions when there are shared queues. This function 1588 * does the re-mapping and queue allocation. 1589 * 1590 * Note that re-enabling aggregations isn't done in this function. 1591 */ 1592 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1593 struct ieee80211_sta *sta) 1594 { 1595 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1596 unsigned int wdg = 1597 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1598 int i; 1599 struct iwl_trans_txq_scd_cfg cfg = { 1600 .sta_id = mvm_sta->deflink.sta_id, 1601 .frame_limit = IWL_FRAME_LIMIT, 1602 }; 1603 1604 /* Make sure reserved queue is still marked as such (if allocated) */ 1605 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1606 mvm->queue_info[mvm_sta->reserved_queue].status = 1607 IWL_MVM_QUEUE_RESERVED; 1608 1609 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1610 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1611 int txq_id = tid_data->txq_id; 1612 int ac; 1613 1614 if (txq_id == IWL_MVM_INVALID_QUEUE) 1615 continue; 1616 1617 ac = tid_to_mac80211_ac[i]; 1618 1619 if (iwl_mvm_has_new_tx_api(mvm)) { 1620 IWL_DEBUG_TX_QUEUES(mvm, 1621 "Re-mapping sta %d tid %d\n", 1622 mvm_sta->deflink.sta_id, i); 1623 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1624 mvm_sta->deflink.sta_id, 1625 i, wdg); 1626 /* 1627 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1628 * to try again later, we have no other good way of 1629 * failing here 1630 */ 1631 if (txq_id < 0) 1632 txq_id = IWL_MVM_INVALID_QUEUE; 1633 tid_data->txq_id = txq_id; 1634 1635 /* 1636 * Since we don't set the seq number after reset, and HW 1637 * sets it now, FW reset will cause the seq num to start 1638 * at 0 again, so driver will need to update it 1639 * internally as well, so it keeps in sync with real val 1640 */ 1641 tid_data->seq_number = 0; 1642 } else { 1643 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1644 1645 cfg.tid = i; 1646 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1647 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1648 txq_id == 1649 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1650 1651 IWL_DEBUG_TX_QUEUES(mvm, 1652 "Re-mapping sta %d tid %d to queue %d\n", 1653 mvm_sta->deflink.sta_id, i, 1654 txq_id); 1655 1656 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1657 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1658 } 1659 } 1660 } 1661 1662 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1663 struct iwl_mvm_int_sta *sta, 1664 const u8 *addr, 1665 u16 mac_id, u16 color) 1666 { 1667 struct iwl_mvm_add_sta_cmd cmd; 1668 int ret; 1669 u32 status = ADD_STA_SUCCESS; 1670 1671 lockdep_assert_held(&mvm->mutex); 1672 1673 memset(&cmd, 0, sizeof(cmd)); 1674 cmd.sta_id = sta->sta_id; 1675 1676 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1677 sta->type == IWL_STA_AUX_ACTIVITY) 1678 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1679 else 1680 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1681 color)); 1682 1683 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1684 cmd.station_type = sta->type; 1685 1686 if (!iwl_mvm_has_new_tx_api(mvm)) 1687 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1688 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1689 1690 if (addr) 1691 memcpy(cmd.addr, addr, ETH_ALEN); 1692 1693 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1694 iwl_mvm_add_sta_cmd_size(mvm), 1695 &cmd, &status); 1696 if (ret) 1697 return ret; 1698 1699 switch (status & IWL_ADD_STA_STATUS_MASK) { 1700 case ADD_STA_SUCCESS: 1701 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1702 return 0; 1703 default: 1704 ret = -EIO; 1705 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1706 status); 1707 break; 1708 } 1709 return ret; 1710 } 1711 1712 /* Initialize driver data of a new sta */ 1713 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1714 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1715 { 1716 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1717 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1718 struct iwl_mvm_rxq_dup_data *dup_data; 1719 int i, ret = 0; 1720 1721 lockdep_assert_held(&mvm->mutex); 1722 1723 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1724 mvmvif->color); 1725 mvm_sta->vif = vif; 1726 1727 /* for MLD sta_id(s) should be allocated for each link before calling 1728 * this function 1729 */ 1730 if (!mvm->mld_api_is_used) { 1731 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1732 return -EINVAL; 1733 1734 mvm_sta->deflink.sta_id = sta_id; 1735 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1736 1737 if (!mvm->trans->trans_cfg->gen2) 1738 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1739 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1740 else 1741 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1742 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1743 } 1744 1745 mvm_sta->tt_tx_protection = false; 1746 mvm_sta->sta_type = sta_type; 1747 1748 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1749 1750 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1751 /* 1752 * Mark all queues for this STA as unallocated and defer TX 1753 * frames until the queue is allocated 1754 */ 1755 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1756 } 1757 1758 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1759 struct iwl_mvm_txq *mvmtxq = 1760 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1761 1762 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1763 INIT_LIST_HEAD(&mvmtxq->list); 1764 atomic_set(&mvmtxq->tx_request, 0); 1765 } 1766 1767 if (iwl_mvm_has_new_rx_api(mvm)) { 1768 int q; 1769 1770 dup_data = kcalloc(mvm->trans->num_rx_queues, 1771 sizeof(*dup_data), GFP_KERNEL); 1772 if (!dup_data) 1773 return -ENOMEM; 1774 /* 1775 * Initialize all the last_seq values to 0xffff which can never 1776 * compare equal to the frame's seq_ctrl in the check in 1777 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1778 * number and fragmented packets don't reach that function. 1779 * 1780 * This thus allows receiving a packet with seqno 0 and the 1781 * retry bit set as the very first packet on a new TID. 1782 */ 1783 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1784 memset(dup_data[q].last_seq, 0xff, 1785 sizeof(dup_data[q].last_seq)); 1786 mvm_sta->dup_data = dup_data; 1787 } 1788 1789 if (!iwl_mvm_has_new_tx_api(mvm)) { 1790 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1791 ieee80211_vif_type_p2p(vif)); 1792 if (ret) 1793 return ret; 1794 } 1795 1796 /* 1797 * if rs is registered with mac80211, then "add station" will be handled 1798 * via the corresponding ops, otherwise need to notify rate scaling here 1799 */ 1800 if (iwl_mvm_has_tlc_offload(mvm)) 1801 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1802 else 1803 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1804 1805 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1806 1807 return 0; 1808 } 1809 1810 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1811 struct ieee80211_vif *vif, 1812 struct ieee80211_sta *sta) 1813 { 1814 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1815 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1816 int ret, sta_id; 1817 bool sta_update = false; 1818 unsigned int sta_flags = 0; 1819 1820 lockdep_assert_held(&mvm->mutex); 1821 1822 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1823 sta_id = iwl_mvm_find_free_sta_id(mvm, 1824 ieee80211_vif_type_p2p(vif)); 1825 else 1826 sta_id = mvm_sta->deflink.sta_id; 1827 1828 if (sta_id == IWL_MVM_INVALID_STA) 1829 return -ENOSPC; 1830 1831 spin_lock_init(&mvm_sta->lock); 1832 1833 /* if this is a HW restart re-alloc existing queues */ 1834 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1835 struct iwl_mvm_int_sta tmp_sta = { 1836 .sta_id = sta_id, 1837 .type = mvm_sta->sta_type, 1838 }; 1839 1840 /* First add an empty station since allocating 1841 * a queue requires a valid station 1842 */ 1843 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1844 mvmvif->id, mvmvif->color); 1845 if (ret) 1846 goto err; 1847 1848 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1849 sta_update = true; 1850 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1851 goto update_fw; 1852 } 1853 1854 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1855 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1856 1857 update_fw: 1858 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1859 if (ret) 1860 goto err; 1861 1862 if (vif->type == NL80211_IFTYPE_STATION) { 1863 if (!sta->tdls) { 1864 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1865 mvmvif->deflink.ap_sta_id = sta_id; 1866 } else { 1867 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1868 } 1869 } 1870 1871 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1872 1873 return 0; 1874 1875 err: 1876 return ret; 1877 } 1878 1879 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1880 bool drain) 1881 { 1882 struct iwl_mvm_add_sta_cmd cmd = {}; 1883 int ret; 1884 u32 status; 1885 1886 lockdep_assert_held(&mvm->mutex); 1887 1888 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1889 cmd.sta_id = mvmsta->deflink.sta_id; 1890 cmd.add_modify = STA_MODE_MODIFY; 1891 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1892 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1893 1894 status = ADD_STA_SUCCESS; 1895 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1896 iwl_mvm_add_sta_cmd_size(mvm), 1897 &cmd, &status); 1898 if (ret) 1899 return ret; 1900 1901 switch (status & IWL_ADD_STA_STATUS_MASK) { 1902 case ADD_STA_SUCCESS: 1903 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1904 mvmsta->deflink.sta_id); 1905 break; 1906 default: 1907 ret = -EIO; 1908 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1909 mvmsta->deflink.sta_id); 1910 break; 1911 } 1912 1913 return ret; 1914 } 1915 1916 /* 1917 * Remove a station from the FW table. Before sending the command to remove 1918 * the station validate that the station is indeed known to the driver (sanity 1919 * only). 1920 */ 1921 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1922 { 1923 struct ieee80211_sta *sta; 1924 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1925 .sta_id = sta_id, 1926 }; 1927 int ret; 1928 1929 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1930 lockdep_is_held(&mvm->mutex)); 1931 1932 /* Note: internal stations are marked as error values */ 1933 if (!sta) { 1934 IWL_ERR(mvm, "Invalid station id\n"); 1935 return -EINVAL; 1936 } 1937 1938 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1939 sizeof(rm_sta_cmd), &rm_sta_cmd); 1940 if (ret) { 1941 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1942 return ret; 1943 } 1944 1945 return 0; 1946 } 1947 1948 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1949 struct ieee80211_vif *vif, 1950 struct ieee80211_sta *sta) 1951 { 1952 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1953 int i; 1954 1955 lockdep_assert_held(&mvm->mutex); 1956 1957 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1958 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1959 continue; 1960 1961 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 1962 &mvm_sta->tid_data[i].txq_id, i); 1963 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1964 } 1965 1966 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1967 struct iwl_mvm_txq *mvmtxq = 1968 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1969 1970 spin_lock_bh(&mvm->add_stream_lock); 1971 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1972 list_del_init(&mvmtxq->list); 1973 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1974 spin_unlock_bh(&mvm->add_stream_lock); 1975 } 1976 } 1977 1978 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1979 struct iwl_mvm_sta *mvm_sta) 1980 { 1981 int i; 1982 1983 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1984 u16 txq_id; 1985 int ret; 1986 1987 spin_lock_bh(&mvm_sta->lock); 1988 txq_id = mvm_sta->tid_data[i].txq_id; 1989 spin_unlock_bh(&mvm_sta->lock); 1990 1991 if (txq_id == IWL_MVM_INVALID_QUEUE) 1992 continue; 1993 1994 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1995 if (ret) 1996 return ret; 1997 } 1998 1999 return 0; 2000 } 2001 2002 /* Execute the common part for both MLD and non-MLD modes. 2003 * Returns if we're done with removing the station, either 2004 * with error or success 2005 */ 2006 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2007 struct ieee80211_sta *sta, 2008 struct ieee80211_link_sta *link_sta, int *ret) 2009 { 2010 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2011 struct iwl_mvm_vif_link_info *mvm_link = 2012 mvmvif->link[link_sta->link_id]; 2013 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2014 struct iwl_mvm_link_sta *mvm_link_sta; 2015 u8 sta_id; 2016 2017 lockdep_assert_held(&mvm->mutex); 2018 2019 mvm_link_sta = 2020 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2021 lockdep_is_held(&mvm->mutex)); 2022 sta_id = mvm_link_sta->sta_id; 2023 2024 /* If there is a TXQ still marked as reserved - free it */ 2025 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2026 u8 reserved_txq = mvm_sta->reserved_queue; 2027 enum iwl_mvm_queue_status *status; 2028 2029 /* 2030 * If no traffic has gone through the reserved TXQ - it 2031 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2032 * should be manually marked as free again 2033 */ 2034 status = &mvm->queue_info[reserved_txq].status; 2035 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2036 (*status != IWL_MVM_QUEUE_FREE), 2037 "sta_id %d reserved txq %d status %d", 2038 sta_id, reserved_txq, *status)) { 2039 *ret = -EINVAL; 2040 return true; 2041 } 2042 2043 *status = IWL_MVM_QUEUE_FREE; 2044 } 2045 2046 if (vif->type == NL80211_IFTYPE_STATION) { 2047 /* if associated - we can't remove the AP STA now */ 2048 if (vif->cfg.assoc) 2049 return true; 2050 2051 /* first remove remaining keys */ 2052 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2053 2054 /* unassoc - go ahead - remove the AP STA now */ 2055 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2056 } 2057 2058 /* 2059 * This shouldn't happen - the TDLS channel switch should be canceled 2060 * before the STA is removed. 2061 */ 2062 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2063 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2064 cancel_delayed_work(&mvm->tdls_cs.dwork); 2065 } 2066 2067 /* 2068 * Make sure that the tx response code sees the station as -EBUSY and 2069 * calls the drain worker. 2070 */ 2071 spin_lock_bh(&mvm_sta->lock); 2072 spin_unlock_bh(&mvm_sta->lock); 2073 2074 return false; 2075 } 2076 2077 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2078 struct ieee80211_vif *vif, 2079 struct ieee80211_sta *sta) 2080 { 2081 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2082 int ret; 2083 2084 lockdep_assert_held(&mvm->mutex); 2085 2086 if (iwl_mvm_has_new_rx_api(mvm)) 2087 kfree(mvm_sta->dup_data); 2088 2089 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2090 if (ret) 2091 return ret; 2092 2093 /* flush its queues here since we are freeing mvm_sta */ 2094 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 2095 if (ret) 2096 return ret; 2097 if (iwl_mvm_has_new_tx_api(mvm)) { 2098 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2099 } else { 2100 u32 q_mask = mvm_sta->tfd_queue_msk; 2101 2102 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2103 q_mask); 2104 } 2105 if (ret) 2106 return ret; 2107 2108 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2109 2110 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2111 2112 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2113 return ret; 2114 2115 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2116 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2117 2118 return ret; 2119 } 2120 2121 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2122 struct ieee80211_vif *vif, 2123 u8 sta_id) 2124 { 2125 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2126 2127 lockdep_assert_held(&mvm->mutex); 2128 2129 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2130 return ret; 2131 } 2132 2133 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2134 struct iwl_mvm_int_sta *sta, 2135 u32 qmask, enum nl80211_iftype iftype, 2136 u8 type) 2137 { 2138 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2139 sta->sta_id == IWL_MVM_INVALID_STA) { 2140 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2141 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2142 return -ENOSPC; 2143 } 2144 2145 sta->tfd_queue_msk = qmask; 2146 sta->type = type; 2147 2148 /* put a non-NULL value so iterating over the stations won't stop */ 2149 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2150 return 0; 2151 } 2152 2153 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2154 { 2155 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2156 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2157 sta->sta_id = IWL_MVM_INVALID_STA; 2158 } 2159 2160 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2161 u8 sta_id, u8 fifo) 2162 { 2163 unsigned int wdg_timeout = 2164 mvm->trans->trans_cfg->base_params->wd_timeout; 2165 struct iwl_trans_txq_scd_cfg cfg = { 2166 .fifo = fifo, 2167 .sta_id = sta_id, 2168 .tid = IWL_MAX_TID_COUNT, 2169 .aggregate = false, 2170 .frame_limit = IWL_FRAME_LIMIT, 2171 }; 2172 2173 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2174 2175 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2176 } 2177 2178 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2179 { 2180 unsigned int wdg_timeout = 2181 mvm->trans->trans_cfg->base_params->wd_timeout; 2182 2183 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2184 2185 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2186 wdg_timeout); 2187 } 2188 2189 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2190 int maccolor, u8 *addr, 2191 struct iwl_mvm_int_sta *sta, 2192 u16 *queue, int fifo) 2193 { 2194 int ret; 2195 2196 /* Map queue to fifo - needs to happen before adding station */ 2197 if (!iwl_mvm_has_new_tx_api(mvm)) 2198 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2199 2200 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2201 if (ret) { 2202 if (!iwl_mvm_has_new_tx_api(mvm)) 2203 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2204 IWL_MAX_TID_COUNT); 2205 return ret; 2206 } 2207 2208 /* 2209 * For 22000 firmware and on we cannot add queue to a station unknown 2210 * to firmware so enable queue here - after the station was added 2211 */ 2212 if (iwl_mvm_has_new_tx_api(mvm)) { 2213 int txq; 2214 2215 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2216 if (txq < 0) { 2217 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2218 return txq; 2219 } 2220 2221 *queue = txq; 2222 } 2223 2224 return 0; 2225 } 2226 2227 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2228 { 2229 int ret; 2230 2231 lockdep_assert_held(&mvm->mutex); 2232 2233 /* Allocate aux station and assign to it the aux queue */ 2234 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2235 NL80211_IFTYPE_UNSPECIFIED, 2236 IWL_STA_AUX_ACTIVITY); 2237 if (ret) 2238 return ret; 2239 2240 /* 2241 * In CDB NICs we need to specify which lmac to use for aux activity 2242 * using the mac_id argument place to send lmac_id to the function 2243 */ 2244 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2245 &mvm->aux_sta, &mvm->aux_queue, 2246 IWL_MVM_TX_FIFO_MCAST); 2247 if (ret) { 2248 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2249 return ret; 2250 } 2251 2252 return 0; 2253 } 2254 2255 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2256 { 2257 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2258 2259 lockdep_assert_held(&mvm->mutex); 2260 2261 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2262 NULL, &mvm->snif_sta, 2263 &mvm->snif_queue, 2264 IWL_MVM_TX_FIFO_BE); 2265 } 2266 2267 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2268 { 2269 int ret; 2270 2271 lockdep_assert_held(&mvm->mutex); 2272 2273 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2274 return -EINVAL; 2275 2276 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2277 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2278 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2279 if (ret) 2280 IWL_WARN(mvm, "Failed sending remove station\n"); 2281 2282 return ret; 2283 } 2284 2285 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2286 { 2287 int ret; 2288 2289 lockdep_assert_held(&mvm->mutex); 2290 2291 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2292 return -EINVAL; 2293 2294 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2295 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2296 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2297 if (ret) 2298 IWL_WARN(mvm, "Failed sending remove station\n"); 2299 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2300 2301 return ret; 2302 } 2303 2304 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2305 { 2306 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2307 } 2308 2309 /* 2310 * Send the add station command for the vif's broadcast station. 2311 * Assumes that the station was already allocated. 2312 * 2313 * @mvm: the mvm component 2314 * @vif: the interface to which the broadcast station is added 2315 * @bsta: the broadcast station to add. 2316 */ 2317 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2318 { 2319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2320 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2321 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2322 const u8 *baddr = _baddr; 2323 int queue; 2324 int ret; 2325 unsigned int wdg_timeout = 2326 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2327 struct iwl_trans_txq_scd_cfg cfg = { 2328 .fifo = IWL_MVM_TX_FIFO_VO, 2329 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2330 .tid = IWL_MAX_TID_COUNT, 2331 .aggregate = false, 2332 .frame_limit = IWL_FRAME_LIMIT, 2333 }; 2334 2335 lockdep_assert_held(&mvm->mutex); 2336 2337 if (!iwl_mvm_has_new_tx_api(mvm)) { 2338 if (vif->type == NL80211_IFTYPE_AP || 2339 vif->type == NL80211_IFTYPE_ADHOC) { 2340 queue = mvm->probe_queue; 2341 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2342 queue = mvm->p2p_dev_queue; 2343 } else { 2344 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2345 return -EINVAL; 2346 } 2347 2348 bsta->tfd_queue_msk |= BIT(queue); 2349 2350 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2351 } 2352 2353 if (vif->type == NL80211_IFTYPE_ADHOC) 2354 baddr = vif->bss_conf.bssid; 2355 2356 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2357 return -ENOSPC; 2358 2359 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2360 mvmvif->id, mvmvif->color); 2361 if (ret) 2362 return ret; 2363 2364 /* 2365 * For 22000 firmware and on we cannot add queue to a station unknown 2366 * to firmware so enable queue here - after the station was added 2367 */ 2368 if (iwl_mvm_has_new_tx_api(mvm)) { 2369 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2370 IWL_MAX_TID_COUNT, 2371 wdg_timeout); 2372 if (queue < 0) { 2373 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2374 return queue; 2375 } 2376 2377 if (vif->type == NL80211_IFTYPE_AP || 2378 vif->type == NL80211_IFTYPE_ADHOC) { 2379 /* for queue management */ 2380 mvm->probe_queue = queue; 2381 /* for use in TX */ 2382 mvmvif->deflink.mgmt_queue = queue; 2383 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2384 mvm->p2p_dev_queue = queue; 2385 } 2386 } else if (vif->type == NL80211_IFTYPE_AP || 2387 vif->type == NL80211_IFTYPE_ADHOC) { 2388 /* set it for use in TX */ 2389 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2390 } 2391 2392 return 0; 2393 } 2394 2395 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2396 struct ieee80211_vif *vif) 2397 { 2398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2399 u16 *queueptr, queue; 2400 2401 lockdep_assert_held(&mvm->mutex); 2402 2403 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.bcast_sta, true); 2404 2405 switch (vif->type) { 2406 case NL80211_IFTYPE_AP: 2407 case NL80211_IFTYPE_ADHOC: 2408 queueptr = &mvm->probe_queue; 2409 break; 2410 case NL80211_IFTYPE_P2P_DEVICE: 2411 queueptr = &mvm->p2p_dev_queue; 2412 break; 2413 default: 2414 WARN(1, "Can't free bcast queue on vif type %d\n", 2415 vif->type); 2416 return; 2417 } 2418 2419 queue = *queueptr; 2420 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2421 queueptr, IWL_MAX_TID_COUNT); 2422 2423 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2424 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2425 2426 if (iwl_mvm_has_new_tx_api(mvm)) 2427 return; 2428 2429 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2430 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2431 } 2432 2433 /* Send the FW a request to remove the station from it's internal data 2434 * structures, but DO NOT remove the entry from the local data structures. */ 2435 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2436 { 2437 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2438 int ret; 2439 2440 lockdep_assert_held(&mvm->mutex); 2441 2442 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2443 2444 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2445 if (ret) 2446 IWL_WARN(mvm, "Failed sending remove station\n"); 2447 return ret; 2448 } 2449 2450 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2451 { 2452 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2453 2454 lockdep_assert_held(&mvm->mutex); 2455 2456 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2457 ieee80211_vif_type_p2p(vif), 2458 IWL_STA_GENERAL_PURPOSE); 2459 } 2460 2461 /* Allocate a new station entry for the broadcast station to the given vif, 2462 * and send it to the FW. 2463 * Note that each P2P mac should have its own broadcast station. 2464 * 2465 * @mvm: the mvm component 2466 * @vif: the interface to which the broadcast station is added 2467 * @bsta: the broadcast station to add. */ 2468 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2469 { 2470 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2471 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2472 int ret; 2473 2474 lockdep_assert_held(&mvm->mutex); 2475 2476 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2477 if (ret) 2478 return ret; 2479 2480 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2481 2482 if (ret) 2483 iwl_mvm_dealloc_int_sta(mvm, bsta); 2484 2485 return ret; 2486 } 2487 2488 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2489 { 2490 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2491 2492 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2493 } 2494 2495 /* 2496 * Send the FW a request to remove the station from it's internal data 2497 * structures, and in addition remove it from the local data structure. 2498 */ 2499 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2500 { 2501 int ret; 2502 2503 lockdep_assert_held(&mvm->mutex); 2504 2505 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2506 2507 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2508 2509 return ret; 2510 } 2511 2512 /* 2513 * Allocate a new station entry for the multicast station to the given vif, 2514 * and send it to the FW. 2515 * Note that each AP/GO mac should have its own multicast station. 2516 * 2517 * @mvm: the mvm component 2518 * @vif: the interface to which the multicast station is added 2519 */ 2520 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2521 { 2522 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2523 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2524 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2525 const u8 *maddr = _maddr; 2526 struct iwl_trans_txq_scd_cfg cfg = { 2527 .fifo = vif->type == NL80211_IFTYPE_AP ? 2528 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2529 .sta_id = msta->sta_id, 2530 .tid = 0, 2531 .aggregate = false, 2532 .frame_limit = IWL_FRAME_LIMIT, 2533 }; 2534 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2535 int ret; 2536 2537 lockdep_assert_held(&mvm->mutex); 2538 2539 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2540 vif->type != NL80211_IFTYPE_ADHOC)) 2541 return -ENOTSUPP; 2542 2543 /* 2544 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2545 * invalid, so make sure we use the queue we want. 2546 * Note that this is done here as we want to avoid making DQA 2547 * changes in mac80211 layer. 2548 */ 2549 if (vif->type == NL80211_IFTYPE_ADHOC) 2550 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2551 2552 /* 2553 * While in previous FWs we had to exclude cab queue from TFD queue 2554 * mask, now it is needed as any other queue. 2555 */ 2556 if (!iwl_mvm_has_new_tx_api(mvm) && 2557 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2558 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2559 &cfg, 2560 timeout); 2561 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2562 } 2563 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2564 mvmvif->id, mvmvif->color); 2565 if (ret) 2566 goto err; 2567 2568 /* 2569 * Enable cab queue after the ADD_STA command is sent. 2570 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2571 * command with unknown station id, and for FW that doesn't support 2572 * station API since the cab queue is not included in the 2573 * tfd_queue_mask. 2574 */ 2575 if (iwl_mvm_has_new_tx_api(mvm)) { 2576 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2577 0, timeout); 2578 if (queue < 0) { 2579 ret = queue; 2580 goto err; 2581 } 2582 mvmvif->deflink.cab_queue = queue; 2583 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2584 IWL_UCODE_TLV_API_STA_TYPE)) 2585 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2586 &cfg, 2587 timeout); 2588 2589 return 0; 2590 err: 2591 iwl_mvm_dealloc_int_sta(mvm, msta); 2592 return ret; 2593 } 2594 2595 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2596 struct ieee80211_key_conf *keyconf, 2597 bool mcast) 2598 { 2599 union { 2600 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2601 struct iwl_mvm_add_sta_key_cmd cmd; 2602 } u = {}; 2603 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2604 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2605 __le16 key_flags; 2606 int ret, size; 2607 u32 status; 2608 2609 /* This is a valid situation for GTK removal */ 2610 if (sta_id == IWL_MVM_INVALID_STA) 2611 return 0; 2612 2613 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2614 STA_KEY_FLG_KEYID_MSK); 2615 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2616 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2617 2618 if (mcast) 2619 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2620 2621 /* 2622 * The fields assigned here are in the same location at the start 2623 * of the command, so we can do this union trick. 2624 */ 2625 u.cmd.common.key_flags = key_flags; 2626 u.cmd.common.key_offset = keyconf->hw_key_idx; 2627 u.cmd.common.sta_id = sta_id; 2628 2629 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2630 2631 status = ADD_STA_SUCCESS; 2632 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2633 &status); 2634 2635 switch (status) { 2636 case ADD_STA_SUCCESS: 2637 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2638 break; 2639 default: 2640 ret = -EIO; 2641 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2642 break; 2643 } 2644 2645 return ret; 2646 } 2647 2648 /* 2649 * Send the FW a request to remove the station from it's internal data 2650 * structures, and in addition remove it from the local data structure. 2651 */ 2652 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2653 { 2654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2655 int ret; 2656 2657 lockdep_assert_held(&mvm->mutex); 2658 2659 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.mcast_sta, true); 2660 2661 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2662 &mvmvif->deflink.cab_queue, 0); 2663 2664 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2665 if (ret) 2666 IWL_WARN(mvm, "Failed sending remove station\n"); 2667 2668 return ret; 2669 } 2670 2671 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2672 { 2673 struct iwl_mvm_delba_data notif = { 2674 .baid = baid, 2675 }; 2676 2677 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2678 ¬if, sizeof(notif)); 2679 }; 2680 2681 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2682 struct iwl_mvm_baid_data *data) 2683 { 2684 int i; 2685 2686 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2687 2688 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2689 int j; 2690 struct iwl_mvm_reorder_buffer *reorder_buf = 2691 &data->reorder_buf[i]; 2692 struct iwl_mvm_reorder_buf_entry *entries = 2693 &data->entries[i * data->entries_per_queue]; 2694 2695 spin_lock_bh(&reorder_buf->lock); 2696 if (likely(!reorder_buf->num_stored)) { 2697 spin_unlock_bh(&reorder_buf->lock); 2698 continue; 2699 } 2700 2701 /* 2702 * This shouldn't happen in regular DELBA since the internal 2703 * delBA notification should trigger a release of all frames in 2704 * the reorder buffer. 2705 */ 2706 WARN_ON(1); 2707 2708 for (j = 0; j < reorder_buf->buf_size; j++) 2709 __skb_queue_purge(&entries[j].e.frames); 2710 /* 2711 * Prevent timer re-arm. This prevents a very far fetched case 2712 * where we timed out on the notification. There may be prior 2713 * RX frames pending in the RX queue before the notification 2714 * that might get processed between now and the actual deletion 2715 * and we would re-arm the timer although we are deleting the 2716 * reorder buffer. 2717 */ 2718 reorder_buf->removed = true; 2719 spin_unlock_bh(&reorder_buf->lock); 2720 del_timer_sync(&reorder_buf->reorder_timer); 2721 } 2722 } 2723 2724 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2725 struct iwl_mvm_baid_data *data, 2726 u16 ssn, u16 buf_size) 2727 { 2728 int i; 2729 2730 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2731 struct iwl_mvm_reorder_buffer *reorder_buf = 2732 &data->reorder_buf[i]; 2733 struct iwl_mvm_reorder_buf_entry *entries = 2734 &data->entries[i * data->entries_per_queue]; 2735 int j; 2736 2737 reorder_buf->num_stored = 0; 2738 reorder_buf->head_sn = ssn; 2739 reorder_buf->buf_size = buf_size; 2740 /* rx reorder timer */ 2741 timer_setup(&reorder_buf->reorder_timer, 2742 iwl_mvm_reorder_timer_expired, 0); 2743 spin_lock_init(&reorder_buf->lock); 2744 reorder_buf->mvm = mvm; 2745 reorder_buf->queue = i; 2746 reorder_buf->valid = false; 2747 for (j = 0; j < reorder_buf->buf_size; j++) 2748 __skb_queue_head_init(&entries[j].e.frames); 2749 } 2750 } 2751 2752 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2753 struct iwl_mvm_sta *mvm_sta, 2754 bool start, int tid, u16 ssn, 2755 u16 buf_size) 2756 { 2757 struct iwl_mvm_add_sta_cmd cmd = { 2758 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2759 .sta_id = mvm_sta->deflink.sta_id, 2760 .add_modify = STA_MODE_MODIFY, 2761 }; 2762 u32 status; 2763 int ret; 2764 2765 if (start) { 2766 cmd.add_immediate_ba_tid = tid; 2767 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2768 cmd.rx_ba_window = cpu_to_le16(buf_size); 2769 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2770 } else { 2771 cmd.remove_immediate_ba_tid = tid; 2772 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2773 } 2774 2775 status = ADD_STA_SUCCESS; 2776 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2777 iwl_mvm_add_sta_cmd_size(mvm), 2778 &cmd, &status); 2779 if (ret) 2780 return ret; 2781 2782 switch (status & IWL_ADD_STA_STATUS_MASK) { 2783 case ADD_STA_SUCCESS: 2784 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2785 start ? "start" : "stopp"); 2786 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2787 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2788 return -EINVAL; 2789 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2790 case ADD_STA_IMMEDIATE_BA_FAILURE: 2791 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2792 return -ENOSPC; 2793 default: 2794 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2795 start ? "start" : "stopp", status); 2796 return -EIO; 2797 } 2798 } 2799 2800 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2801 struct iwl_mvm_sta *mvm_sta, 2802 bool start, int tid, u16 ssn, 2803 u16 buf_size, int baid) 2804 { 2805 struct iwl_rx_baid_cfg_cmd cmd = { 2806 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2807 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2808 }; 2809 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2810 int ret; 2811 2812 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2813 2814 if (start) { 2815 cmd.alloc.sta_id_mask = 2816 cpu_to_le32(BIT(mvm_sta->deflink.sta_id)); 2817 cmd.alloc.tid = tid; 2818 cmd.alloc.ssn = cpu_to_le16(ssn); 2819 cmd.alloc.win_size = cpu_to_le16(buf_size); 2820 baid = -EIO; 2821 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2822 cmd.remove_v1.baid = cpu_to_le32(baid); 2823 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2824 } else { 2825 cmd.remove.sta_id_mask = 2826 cpu_to_le32(BIT(mvm_sta->deflink.sta_id)); 2827 cmd.remove.tid = cpu_to_le32(tid); 2828 } 2829 2830 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2831 &cmd, &baid); 2832 if (ret) 2833 return ret; 2834 2835 if (!start) { 2836 /* ignore firmware baid on remove */ 2837 baid = 0; 2838 } 2839 2840 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2841 start ? "start" : "stopp"); 2842 2843 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2844 return -EINVAL; 2845 2846 return baid; 2847 } 2848 2849 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta, 2850 bool start, int tid, u16 ssn, u16 buf_size, 2851 int baid) 2852 { 2853 if (fw_has_capa(&mvm->fw->ucode_capa, 2854 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2855 return iwl_mvm_fw_baid_op_cmd(mvm, mvm_sta, start, 2856 tid, ssn, buf_size, baid); 2857 2858 return iwl_mvm_fw_baid_op_sta(mvm, mvm_sta, start, 2859 tid, ssn, buf_size); 2860 } 2861 2862 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2863 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2864 { 2865 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2866 struct iwl_mvm_baid_data *baid_data = NULL; 2867 int ret, baid; 2868 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2869 IWL_MAX_BAID_OLD; 2870 2871 lockdep_assert_held(&mvm->mutex); 2872 2873 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2874 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2875 return -ENOSPC; 2876 } 2877 2878 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2879 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2880 2881 /* sparse doesn't like the __align() so don't check */ 2882 #ifndef __CHECKER__ 2883 /* 2884 * The division below will be OK if either the cache line size 2885 * can be divided by the entry size (ALIGN will round up) or if 2886 * if the entry size can be divided by the cache line size, in 2887 * which case the ALIGN() will do nothing. 2888 */ 2889 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2890 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2891 #endif 2892 2893 /* 2894 * Upward align the reorder buffer size to fill an entire cache 2895 * line for each queue, to avoid sharing cache lines between 2896 * different queues. 2897 */ 2898 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2899 2900 /* 2901 * Allocate here so if allocation fails we can bail out early 2902 * before starting the BA session in the firmware 2903 */ 2904 baid_data = kzalloc(sizeof(*baid_data) + 2905 mvm->trans->num_rx_queues * 2906 reorder_buf_size, 2907 GFP_KERNEL); 2908 if (!baid_data) 2909 return -ENOMEM; 2910 2911 /* 2912 * This division is why we need the above BUILD_BUG_ON(), 2913 * if that doesn't hold then this will not be right. 2914 */ 2915 baid_data->entries_per_queue = 2916 reorder_buf_size / sizeof(baid_data->entries[0]); 2917 } 2918 2919 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2920 baid = mvm_sta->tid_to_baid[tid]; 2921 } else { 2922 /* we don't really need it in this case */ 2923 baid = -1; 2924 } 2925 2926 /* Don't send command to remove (start=0) BAID during restart */ 2927 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2928 baid = iwl_mvm_fw_baid_op(mvm, mvm_sta, start, tid, ssn, buf_size, 2929 baid); 2930 2931 if (baid < 0) { 2932 ret = baid; 2933 goto out_free; 2934 } 2935 2936 if (start) { 2937 mvm->rx_ba_sessions++; 2938 2939 if (!iwl_mvm_has_new_rx_api(mvm)) 2940 return 0; 2941 2942 baid_data->baid = baid; 2943 baid_data->timeout = timeout; 2944 baid_data->last_rx = jiffies; 2945 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2946 timer_setup(&baid_data->session_timer, 2947 iwl_mvm_rx_agg_session_expired, 0); 2948 baid_data->mvm = mvm; 2949 baid_data->tid = tid; 2950 baid_data->sta_id = mvm_sta->deflink.sta_id; 2951 2952 mvm_sta->tid_to_baid[tid] = baid; 2953 if (timeout) 2954 mod_timer(&baid_data->session_timer, 2955 TU_TO_EXP_TIME(timeout * 2)); 2956 2957 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2958 /* 2959 * protect the BA data with RCU to cover a case where our 2960 * internal RX sync mechanism will timeout (not that it's 2961 * supposed to happen) and we will free the session data while 2962 * RX is being processed in parallel 2963 */ 2964 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2965 mvm_sta->deflink.sta_id, tid, baid); 2966 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2967 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2968 } else { 2969 baid = mvm_sta->tid_to_baid[tid]; 2970 2971 if (mvm->rx_ba_sessions > 0) 2972 /* check that restart flow didn't zero the counter */ 2973 mvm->rx_ba_sessions--; 2974 if (!iwl_mvm_has_new_rx_api(mvm)) 2975 return 0; 2976 2977 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2978 return -EINVAL; 2979 2980 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2981 if (WARN_ON(!baid_data)) 2982 return -EINVAL; 2983 2984 /* synchronize all rx queues so we can safely delete */ 2985 iwl_mvm_free_reorder(mvm, baid_data); 2986 timer_shutdown_sync(&baid_data->session_timer); 2987 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2988 kfree_rcu(baid_data, rcu_head); 2989 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2990 2991 /* 2992 * After we've deleted it, do another queue sync 2993 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2994 * running it won't find a new session in the old 2995 * BAID. It can find the NULL pointer for the BAID, 2996 * but we must not have it find a different session. 2997 */ 2998 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2999 true, NULL, 0); 3000 } 3001 return 0; 3002 3003 out_free: 3004 kfree(baid_data); 3005 return ret; 3006 } 3007 3008 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3009 int tid, u8 queue, bool start) 3010 { 3011 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3012 struct iwl_mvm_add_sta_cmd cmd = {}; 3013 int ret; 3014 u32 status; 3015 3016 lockdep_assert_held(&mvm->mutex); 3017 3018 if (start) { 3019 mvm_sta->tfd_queue_msk |= BIT(queue); 3020 mvm_sta->tid_disable_agg &= ~BIT(tid); 3021 } else { 3022 /* In DQA-mode the queue isn't removed on agg termination */ 3023 mvm_sta->tid_disable_agg |= BIT(tid); 3024 } 3025 3026 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3027 cmd.sta_id = mvm_sta->deflink.sta_id; 3028 cmd.add_modify = STA_MODE_MODIFY; 3029 if (!iwl_mvm_has_new_tx_api(mvm)) 3030 cmd.modify_mask = STA_MODIFY_QUEUES; 3031 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3032 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3033 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3034 3035 status = ADD_STA_SUCCESS; 3036 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3037 iwl_mvm_add_sta_cmd_size(mvm), 3038 &cmd, &status); 3039 if (ret) 3040 return ret; 3041 3042 switch (status & IWL_ADD_STA_STATUS_MASK) { 3043 case ADD_STA_SUCCESS: 3044 break; 3045 default: 3046 ret = -EIO; 3047 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3048 start ? "start" : "stopp", status); 3049 break; 3050 } 3051 3052 return ret; 3053 } 3054 3055 const u8 tid_to_mac80211_ac[] = { 3056 IEEE80211_AC_BE, 3057 IEEE80211_AC_BK, 3058 IEEE80211_AC_BK, 3059 IEEE80211_AC_BE, 3060 IEEE80211_AC_VI, 3061 IEEE80211_AC_VI, 3062 IEEE80211_AC_VO, 3063 IEEE80211_AC_VO, 3064 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3065 }; 3066 3067 static const u8 tid_to_ucode_ac[] = { 3068 AC_BE, 3069 AC_BK, 3070 AC_BK, 3071 AC_BE, 3072 AC_VI, 3073 AC_VI, 3074 AC_VO, 3075 AC_VO, 3076 }; 3077 3078 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3079 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3080 { 3081 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3082 struct iwl_mvm_tid_data *tid_data; 3083 u16 normalized_ssn; 3084 u16 txq_id; 3085 int ret; 3086 3087 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3088 return -EINVAL; 3089 3090 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3091 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3092 IWL_ERR(mvm, 3093 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3094 mvmsta->tid_data[tid].state); 3095 return -ENXIO; 3096 } 3097 3098 lockdep_assert_held(&mvm->mutex); 3099 3100 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3101 iwl_mvm_has_new_tx_api(mvm)) { 3102 u8 ac = tid_to_mac80211_ac[tid]; 3103 3104 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3105 if (ret) 3106 return ret; 3107 } 3108 3109 spin_lock_bh(&mvmsta->lock); 3110 3111 /* 3112 * Note the possible cases: 3113 * 1. An enabled TXQ - TXQ needs to become agg'ed 3114 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3115 * it as reserved 3116 */ 3117 txq_id = mvmsta->tid_data[tid].txq_id; 3118 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3119 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3120 IWL_MVM_DQA_MIN_DATA_QUEUE, 3121 IWL_MVM_DQA_MAX_DATA_QUEUE); 3122 if (ret < 0) { 3123 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3124 goto out; 3125 } 3126 3127 txq_id = ret; 3128 3129 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3130 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3131 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3132 ret = -ENXIO; 3133 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3134 tid, IWL_MAX_HW_QUEUES - 1); 3135 goto out; 3136 3137 } else if (unlikely(mvm->queue_info[txq_id].status == 3138 IWL_MVM_QUEUE_SHARED)) { 3139 ret = -ENXIO; 3140 IWL_DEBUG_TX_QUEUES(mvm, 3141 "Can't start tid %d agg on shared queue!\n", 3142 tid); 3143 goto out; 3144 } 3145 3146 IWL_DEBUG_TX_QUEUES(mvm, 3147 "AGG for tid %d will be on queue #%d\n", 3148 tid, txq_id); 3149 3150 tid_data = &mvmsta->tid_data[tid]; 3151 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3152 tid_data->txq_id = txq_id; 3153 *ssn = tid_data->ssn; 3154 3155 IWL_DEBUG_TX_QUEUES(mvm, 3156 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3157 mvmsta->deflink.sta_id, tid, txq_id, 3158 tid_data->ssn, 3159 tid_data->next_reclaimed); 3160 3161 /* 3162 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3163 * to align the wrap around of ssn so we compare relevant values. 3164 */ 3165 normalized_ssn = tid_data->ssn; 3166 if (mvm->trans->trans_cfg->gen2) 3167 normalized_ssn &= 0xff; 3168 3169 if (normalized_ssn == tid_data->next_reclaimed) { 3170 tid_data->state = IWL_AGG_STARTING; 3171 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3172 } else { 3173 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3174 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3175 } 3176 3177 out: 3178 spin_unlock_bh(&mvmsta->lock); 3179 3180 return ret; 3181 } 3182 3183 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3184 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3185 bool amsdu) 3186 { 3187 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3188 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3189 unsigned int wdg_timeout = 3190 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3191 int queue, ret; 3192 bool alloc_queue = true; 3193 enum iwl_mvm_queue_status queue_status; 3194 u16 ssn; 3195 3196 struct iwl_trans_txq_scd_cfg cfg = { 3197 .sta_id = mvmsta->deflink.sta_id, 3198 .tid = tid, 3199 .frame_limit = buf_size, 3200 .aggregate = true, 3201 }; 3202 3203 /* 3204 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3205 * manager, so this function should never be called in this case. 3206 */ 3207 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3208 return -EINVAL; 3209 3210 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3211 != IWL_MAX_TID_COUNT); 3212 3213 spin_lock_bh(&mvmsta->lock); 3214 ssn = tid_data->ssn; 3215 queue = tid_data->txq_id; 3216 tid_data->state = IWL_AGG_ON; 3217 mvmsta->agg_tids |= BIT(tid); 3218 tid_data->ssn = 0xffff; 3219 tid_data->amsdu_in_ampdu_allowed = amsdu; 3220 spin_unlock_bh(&mvmsta->lock); 3221 3222 if (iwl_mvm_has_new_tx_api(mvm)) { 3223 /* 3224 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3225 * would have failed, so if we are here there is no need to 3226 * allocate a queue. 3227 * However, if aggregation size is different than the default 3228 * size, the scheduler should be reconfigured. 3229 * We cannot do this with the new TX API, so return unsupported 3230 * for now, until it will be offloaded to firmware.. 3231 * Note that if SCD default value changes - this condition 3232 * should be updated as well. 3233 */ 3234 if (buf_size < IWL_FRAME_LIMIT) 3235 return -ENOTSUPP; 3236 3237 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3238 if (ret) 3239 return -EIO; 3240 goto out; 3241 } 3242 3243 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3244 3245 queue_status = mvm->queue_info[queue].status; 3246 3247 /* Maybe there is no need to even alloc a queue... */ 3248 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3249 alloc_queue = false; 3250 3251 /* 3252 * Only reconfig the SCD for the queue if the window size has 3253 * changed from current (become smaller) 3254 */ 3255 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3256 /* 3257 * If reconfiguring an existing queue, it first must be 3258 * drained 3259 */ 3260 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3261 BIT(queue)); 3262 if (ret) { 3263 IWL_ERR(mvm, 3264 "Error draining queue before reconfig\n"); 3265 return ret; 3266 } 3267 3268 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3269 mvmsta->deflink.sta_id, tid, 3270 buf_size, ssn); 3271 if (ret) { 3272 IWL_ERR(mvm, 3273 "Error reconfiguring TXQ #%d\n", queue); 3274 return ret; 3275 } 3276 } 3277 3278 if (alloc_queue) 3279 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3280 &cfg, wdg_timeout); 3281 3282 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3283 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3284 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3285 if (ret) 3286 return -EIO; 3287 } 3288 3289 /* No need to mark as reserved */ 3290 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3291 3292 out: 3293 /* 3294 * Even though in theory the peer could have different 3295 * aggregation reorder buffer sizes for different sessions, 3296 * our ucode doesn't allow for that and has a global limit 3297 * for each station. Therefore, use the minimum of all the 3298 * aggregation sessions and our default value. 3299 */ 3300 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3301 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3302 buf_size); 3303 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3304 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3305 3306 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3307 sta->addr, tid); 3308 3309 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3310 } 3311 3312 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3313 struct iwl_mvm_sta *mvmsta, 3314 struct iwl_mvm_tid_data *tid_data) 3315 { 3316 u16 txq_id = tid_data->txq_id; 3317 3318 lockdep_assert_held(&mvm->mutex); 3319 3320 if (iwl_mvm_has_new_tx_api(mvm)) 3321 return; 3322 3323 /* 3324 * The TXQ is marked as reserved only if no traffic came through yet 3325 * This means no traffic has been sent on this TID (agg'd or not), so 3326 * we no longer have use for the queue. Since it hasn't even been 3327 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3328 * free. 3329 */ 3330 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3331 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3332 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3333 } 3334 } 3335 3336 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3337 struct ieee80211_sta *sta, u16 tid) 3338 { 3339 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3340 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3341 u16 txq_id; 3342 int err; 3343 3344 /* 3345 * If mac80211 is cleaning its state, then say that we finished since 3346 * our state has been cleared anyway. 3347 */ 3348 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3349 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3350 return 0; 3351 } 3352 3353 spin_lock_bh(&mvmsta->lock); 3354 3355 txq_id = tid_data->txq_id; 3356 3357 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3358 mvmsta->deflink.sta_id, tid, txq_id, 3359 tid_data->state); 3360 3361 mvmsta->agg_tids &= ~BIT(tid); 3362 3363 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3364 3365 switch (tid_data->state) { 3366 case IWL_AGG_ON: 3367 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3368 3369 IWL_DEBUG_TX_QUEUES(mvm, 3370 "ssn = %d, next_recl = %d\n", 3371 tid_data->ssn, tid_data->next_reclaimed); 3372 3373 tid_data->ssn = 0xffff; 3374 tid_data->state = IWL_AGG_OFF; 3375 spin_unlock_bh(&mvmsta->lock); 3376 3377 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3378 3379 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3380 return 0; 3381 case IWL_AGG_STARTING: 3382 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3383 /* 3384 * The agg session has been stopped before it was set up. This 3385 * can happen when the AddBA timer times out for example. 3386 */ 3387 3388 /* No barriers since we are under mutex */ 3389 lockdep_assert_held(&mvm->mutex); 3390 3391 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3392 tid_data->state = IWL_AGG_OFF; 3393 err = 0; 3394 break; 3395 default: 3396 IWL_ERR(mvm, 3397 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3398 mvmsta->deflink.sta_id, tid, tid_data->state); 3399 IWL_ERR(mvm, 3400 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3401 err = -EINVAL; 3402 } 3403 3404 spin_unlock_bh(&mvmsta->lock); 3405 3406 return err; 3407 } 3408 3409 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3410 struct ieee80211_sta *sta, u16 tid) 3411 { 3412 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3413 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3414 u16 txq_id; 3415 enum iwl_mvm_agg_state old_state; 3416 3417 /* 3418 * First set the agg state to OFF to avoid calling 3419 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3420 */ 3421 spin_lock_bh(&mvmsta->lock); 3422 txq_id = tid_data->txq_id; 3423 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3424 mvmsta->deflink.sta_id, tid, txq_id, 3425 tid_data->state); 3426 old_state = tid_data->state; 3427 tid_data->state = IWL_AGG_OFF; 3428 mvmsta->agg_tids &= ~BIT(tid); 3429 spin_unlock_bh(&mvmsta->lock); 3430 3431 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3432 3433 if (old_state >= IWL_AGG_ON) { 3434 iwl_mvm_drain_sta(mvm, mvmsta, true); 3435 3436 if (iwl_mvm_has_new_tx_api(mvm)) { 3437 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3438 BIT(tid))) 3439 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3440 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3441 } else { 3442 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3443 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3444 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3445 } 3446 3447 iwl_mvm_drain_sta(mvm, mvmsta, false); 3448 3449 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3450 } 3451 3452 return 0; 3453 } 3454 3455 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3456 { 3457 int i, max = -1, max_offs = -1; 3458 3459 lockdep_assert_held(&mvm->mutex); 3460 3461 /* Pick the unused key offset with the highest 'deleted' 3462 * counter. Every time a key is deleted, all the counters 3463 * are incremented and the one that was just deleted is 3464 * reset to zero. Thus, the highest counter is the one 3465 * that was deleted longest ago. Pick that one. 3466 */ 3467 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3468 if (test_bit(i, mvm->fw_key_table)) 3469 continue; 3470 if (mvm->fw_key_deleted[i] > max) { 3471 max = mvm->fw_key_deleted[i]; 3472 max_offs = i; 3473 } 3474 } 3475 3476 if (max_offs < 0) 3477 return STA_KEY_IDX_INVALID; 3478 3479 return max_offs; 3480 } 3481 3482 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3483 struct ieee80211_vif *vif, 3484 struct ieee80211_sta *sta) 3485 { 3486 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3487 3488 if (sta) 3489 return iwl_mvm_sta_from_mac80211(sta); 3490 3491 /* 3492 * The device expects GTKs for station interfaces to be 3493 * installed as GTKs for the AP station. If we have no 3494 * station ID, then use AP's station ID. 3495 */ 3496 if (vif->type == NL80211_IFTYPE_STATION && 3497 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3498 u8 sta_id = mvmvif->deflink.ap_sta_id; 3499 3500 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3501 lockdep_is_held(&mvm->mutex)); 3502 3503 /* 3504 * It is possible that the 'sta' parameter is NULL, 3505 * for example when a GTK is removed - the sta_id will then 3506 * be the AP ID, and no station was passed by mac80211. 3507 */ 3508 if (IS_ERR_OR_NULL(sta)) 3509 return NULL; 3510 3511 return iwl_mvm_sta_from_mac80211(sta); 3512 } 3513 3514 return NULL; 3515 } 3516 3517 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3518 { 3519 int i; 3520 3521 for (i = len - 1; i >= 0; i--) { 3522 if (pn1[i] > pn2[i]) 3523 return 1; 3524 if (pn1[i] < pn2[i]) 3525 return -1; 3526 } 3527 3528 return 0; 3529 } 3530 3531 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3532 u32 sta_id, 3533 struct ieee80211_key_conf *key, bool mcast, 3534 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3535 u8 key_offset, bool mfp) 3536 { 3537 union { 3538 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3539 struct iwl_mvm_add_sta_key_cmd cmd; 3540 } u = {}; 3541 __le16 key_flags; 3542 int ret; 3543 u32 status; 3544 u16 keyidx; 3545 u64 pn = 0; 3546 int i, size; 3547 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3548 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3549 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3550 new_api ? 2 : 1); 3551 3552 if (sta_id == IWL_MVM_INVALID_STA) 3553 return -EINVAL; 3554 3555 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3556 STA_KEY_FLG_KEYID_MSK; 3557 key_flags = cpu_to_le16(keyidx); 3558 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3559 3560 switch (key->cipher) { 3561 case WLAN_CIPHER_SUITE_TKIP: 3562 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3563 if (api_ver >= 2) { 3564 memcpy((void *)&u.cmd.tx_mic_key, 3565 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3566 IWL_MIC_KEY_SIZE); 3567 3568 memcpy((void *)&u.cmd.rx_mic_key, 3569 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3570 IWL_MIC_KEY_SIZE); 3571 pn = atomic64_read(&key->tx_pn); 3572 3573 } else { 3574 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3575 for (i = 0; i < 5; i++) 3576 u.cmd_v1.tkip_rx_ttak[i] = 3577 cpu_to_le16(tkip_p1k[i]); 3578 } 3579 memcpy(u.cmd.common.key, key->key, key->keylen); 3580 break; 3581 case WLAN_CIPHER_SUITE_CCMP: 3582 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3583 memcpy(u.cmd.common.key, key->key, key->keylen); 3584 if (api_ver >= 2) 3585 pn = atomic64_read(&key->tx_pn); 3586 break; 3587 case WLAN_CIPHER_SUITE_WEP104: 3588 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3589 fallthrough; 3590 case WLAN_CIPHER_SUITE_WEP40: 3591 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3592 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3593 break; 3594 case WLAN_CIPHER_SUITE_GCMP_256: 3595 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3596 fallthrough; 3597 case WLAN_CIPHER_SUITE_GCMP: 3598 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3599 memcpy(u.cmd.common.key, key->key, key->keylen); 3600 if (api_ver >= 2) 3601 pn = atomic64_read(&key->tx_pn); 3602 break; 3603 default: 3604 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3605 memcpy(u.cmd.common.key, key->key, key->keylen); 3606 } 3607 3608 if (mcast) 3609 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3610 if (mfp) 3611 key_flags |= cpu_to_le16(STA_KEY_MFP); 3612 3613 u.cmd.common.key_offset = key_offset; 3614 u.cmd.common.key_flags = key_flags; 3615 u.cmd.common.sta_id = sta_id; 3616 3617 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3618 i = 0; 3619 else 3620 i = -1; 3621 3622 for (; i < IEEE80211_NUM_TIDS; i++) { 3623 struct ieee80211_key_seq seq = {}; 3624 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3625 int rx_pn_len = 8; 3626 /* there's a hole at 2/3 in FW format depending on version */ 3627 int hole = api_ver >= 3 ? 0 : 2; 3628 3629 ieee80211_get_key_rx_seq(key, i, &seq); 3630 3631 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3632 rx_pn[0] = seq.tkip.iv16; 3633 rx_pn[1] = seq.tkip.iv16 >> 8; 3634 rx_pn[2 + hole] = seq.tkip.iv32; 3635 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3636 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3637 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3638 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3639 rx_pn = seq.hw.seq; 3640 rx_pn_len = seq.hw.seq_len; 3641 } else { 3642 rx_pn[0] = seq.ccmp.pn[0]; 3643 rx_pn[1] = seq.ccmp.pn[1]; 3644 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3645 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3646 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3647 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3648 } 3649 3650 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3651 rx_pn_len) > 0) 3652 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3653 rx_pn_len); 3654 } 3655 3656 if (api_ver >= 2) { 3657 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3658 size = sizeof(u.cmd); 3659 } else { 3660 size = sizeof(u.cmd_v1); 3661 } 3662 3663 status = ADD_STA_SUCCESS; 3664 if (cmd_flags & CMD_ASYNC) 3665 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3666 &u.cmd); 3667 else 3668 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3669 &u.cmd, &status); 3670 3671 switch (status) { 3672 case ADD_STA_SUCCESS: 3673 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3674 break; 3675 default: 3676 ret = -EIO; 3677 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3678 break; 3679 } 3680 3681 return ret; 3682 } 3683 3684 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3685 struct ieee80211_key_conf *keyconf, 3686 u8 sta_id, bool remove_key) 3687 { 3688 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3689 3690 /* verify the key details match the required command's expectations */ 3691 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3692 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3693 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3694 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3695 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3696 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3697 return -EINVAL; 3698 3699 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3700 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3701 return -EINVAL; 3702 3703 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3704 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3705 3706 if (remove_key) { 3707 /* This is a valid situation for IGTK */ 3708 if (sta_id == IWL_MVM_INVALID_STA) 3709 return 0; 3710 3711 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3712 } else { 3713 struct ieee80211_key_seq seq; 3714 const u8 *pn; 3715 3716 switch (keyconf->cipher) { 3717 case WLAN_CIPHER_SUITE_AES_CMAC: 3718 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3719 break; 3720 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3721 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3722 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3723 break; 3724 default: 3725 return -EINVAL; 3726 } 3727 3728 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3729 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3730 igtk_cmd.ctrl_flags |= 3731 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3732 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3733 pn = seq.aes_cmac.pn; 3734 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3735 ((u64) pn[4] << 8) | 3736 ((u64) pn[3] << 16) | 3737 ((u64) pn[2] << 24) | 3738 ((u64) pn[1] << 32) | 3739 ((u64) pn[0] << 40)); 3740 } 3741 3742 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3743 remove_key ? "removing" : "installing", 3744 keyconf->keyidx >= 6 ? "B" : "", 3745 keyconf->keyidx, igtk_cmd.sta_id); 3746 3747 if (!iwl_mvm_has_new_rx_api(mvm)) { 3748 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3749 .ctrl_flags = igtk_cmd.ctrl_flags, 3750 .key_id = igtk_cmd.key_id, 3751 .sta_id = igtk_cmd.sta_id, 3752 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3753 }; 3754 3755 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3756 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3757 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3758 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3759 } 3760 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3761 sizeof(igtk_cmd), &igtk_cmd); 3762 } 3763 3764 3765 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3766 struct ieee80211_vif *vif, 3767 struct ieee80211_sta *sta) 3768 { 3769 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3770 3771 if (sta) 3772 return sta->addr; 3773 3774 if (vif->type == NL80211_IFTYPE_STATION && 3775 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3776 u8 sta_id = mvmvif->deflink.ap_sta_id; 3777 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3778 lockdep_is_held(&mvm->mutex)); 3779 return sta->addr; 3780 } 3781 3782 3783 return NULL; 3784 } 3785 3786 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3787 struct ieee80211_vif *vif, 3788 struct ieee80211_sta *sta, 3789 struct ieee80211_key_conf *keyconf, 3790 u8 key_offset, 3791 bool mcast) 3792 { 3793 const u8 *addr; 3794 struct ieee80211_key_seq seq; 3795 u16 p1k[5]; 3796 u32 sta_id; 3797 bool mfp = false; 3798 3799 if (sta) { 3800 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3801 3802 sta_id = mvm_sta->deflink.sta_id; 3803 mfp = sta->mfp; 3804 } else if (vif->type == NL80211_IFTYPE_AP && 3805 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3806 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3807 3808 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3809 } else { 3810 IWL_ERR(mvm, "Failed to find station id\n"); 3811 return -EINVAL; 3812 } 3813 3814 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3815 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3816 /* get phase 1 key from mac80211 */ 3817 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3818 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3819 3820 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3821 seq.tkip.iv32, p1k, 0, key_offset, 3822 mfp); 3823 } 3824 3825 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3826 0, NULL, 0, key_offset, mfp); 3827 } 3828 3829 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3830 struct ieee80211_vif *vif, 3831 struct ieee80211_sta *sta, 3832 struct ieee80211_key_conf *keyconf, 3833 u8 key_offset) 3834 { 3835 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3836 struct iwl_mvm_sta *mvm_sta; 3837 u8 sta_id = IWL_MVM_INVALID_STA; 3838 int ret; 3839 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3840 3841 lockdep_assert_held(&mvm->mutex); 3842 3843 if (vif->type != NL80211_IFTYPE_AP || 3844 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3845 /* Get the station id from the mvm local station table */ 3846 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3847 if (!mvm_sta) { 3848 IWL_ERR(mvm, "Failed to find station\n"); 3849 return -EINVAL; 3850 } 3851 sta_id = mvm_sta->deflink.sta_id; 3852 3853 /* 3854 * It is possible that the 'sta' parameter is NULL, and thus 3855 * there is a need to retrieve the sta from the local station 3856 * table. 3857 */ 3858 if (!sta) { 3859 sta = rcu_dereference_protected( 3860 mvm->fw_id_to_mac_id[sta_id], 3861 lockdep_is_held(&mvm->mutex)); 3862 if (IS_ERR_OR_NULL(sta)) { 3863 IWL_ERR(mvm, "Invalid station id\n"); 3864 return -EINVAL; 3865 } 3866 } 3867 3868 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3869 return -EINVAL; 3870 } else { 3871 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3872 3873 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3874 } 3875 3876 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3877 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3878 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3879 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3880 goto end; 3881 } 3882 3883 /* If the key_offset is not pre-assigned, we need to find a 3884 * new offset to use. In normal cases, the offset is not 3885 * pre-assigned, but during HW_RESTART we want to reuse the 3886 * same indices, so we pass them when this function is called. 3887 * 3888 * In D3 entry, we need to hardcoded the indices (because the 3889 * firmware hardcodes the PTK offset to 0). In this case, we 3890 * need to make sure we don't overwrite the hw_key_idx in the 3891 * keyconf structure, because otherwise we cannot configure 3892 * the original ones back when resuming. 3893 */ 3894 if (key_offset == STA_KEY_IDX_INVALID) { 3895 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3896 if (key_offset == STA_KEY_IDX_INVALID) 3897 return -ENOSPC; 3898 keyconf->hw_key_idx = key_offset; 3899 } 3900 3901 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3902 if (ret) 3903 goto end; 3904 3905 /* 3906 * For WEP, the same key is used for multicast and unicast. Upload it 3907 * again, using the same key offset, and now pointing the other one 3908 * to the same key slot (offset). 3909 * If this fails, remove the original as well. 3910 */ 3911 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3912 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3913 sta) { 3914 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3915 key_offset, !mcast); 3916 if (ret) { 3917 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3918 goto end; 3919 } 3920 } 3921 3922 __set_bit(key_offset, mvm->fw_key_table); 3923 3924 end: 3925 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3926 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3927 sta ? sta->addr : zero_addr, ret); 3928 return ret; 3929 } 3930 3931 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3932 struct ieee80211_vif *vif, 3933 struct ieee80211_sta *sta, 3934 struct ieee80211_key_conf *keyconf) 3935 { 3936 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3937 struct iwl_mvm_sta *mvm_sta; 3938 u8 sta_id = IWL_MVM_INVALID_STA; 3939 int ret, i; 3940 3941 lockdep_assert_held(&mvm->mutex); 3942 3943 /* Get the station from the mvm local station table */ 3944 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3945 if (mvm_sta) 3946 sta_id = mvm_sta->deflink.sta_id; 3947 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3948 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3949 3950 3951 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3952 keyconf->keyidx, sta_id); 3953 3954 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3955 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3956 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3957 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3958 3959 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3960 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3961 keyconf->hw_key_idx); 3962 return -ENOENT; 3963 } 3964 3965 /* track which key was deleted last */ 3966 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3967 if (mvm->fw_key_deleted[i] < U8_MAX) 3968 mvm->fw_key_deleted[i]++; 3969 } 3970 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3971 3972 if (sta && !mvm_sta) { 3973 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3974 return 0; 3975 } 3976 3977 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3978 if (ret) 3979 return ret; 3980 3981 /* delete WEP key twice to get rid of (now useless) offset */ 3982 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3983 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3984 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3985 3986 return ret; 3987 } 3988 3989 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3990 struct ieee80211_vif *vif, 3991 struct ieee80211_key_conf *keyconf, 3992 struct ieee80211_sta *sta, u32 iv32, 3993 u16 *phase1key) 3994 { 3995 struct iwl_mvm_sta *mvm_sta; 3996 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3997 bool mfp = sta ? sta->mfp : false; 3998 3999 rcu_read_lock(); 4000 4001 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4002 if (WARN_ON_ONCE(!mvm_sta)) 4003 goto unlock; 4004 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4005 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4006 mfp); 4007 4008 unlock: 4009 rcu_read_unlock(); 4010 } 4011 4012 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4013 struct ieee80211_sta *sta) 4014 { 4015 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4016 struct iwl_mvm_add_sta_cmd cmd = { 4017 .add_modify = STA_MODE_MODIFY, 4018 .sta_id = mvmsta->deflink.sta_id, 4019 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4020 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4021 }; 4022 int ret; 4023 4024 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4025 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4026 if (ret) 4027 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4028 } 4029 4030 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4031 struct ieee80211_sta *sta, 4032 enum ieee80211_frame_release_type reason, 4033 u16 cnt, u16 tids, bool more_data, 4034 bool single_sta_queue) 4035 { 4036 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4037 struct iwl_mvm_add_sta_cmd cmd = { 4038 .add_modify = STA_MODE_MODIFY, 4039 .sta_id = mvmsta->deflink.sta_id, 4040 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4041 .sleep_tx_count = cpu_to_le16(cnt), 4042 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4043 }; 4044 int tid, ret; 4045 unsigned long _tids = tids; 4046 4047 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4048 * Note that this field is reserved and unused by firmware not 4049 * supporting GO uAPSD, so it's safe to always do this. 4050 */ 4051 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4052 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4053 4054 /* If we're releasing frames from aggregation or dqa queues then check 4055 * if all the queues that we're releasing frames from, combined, have: 4056 * - more frames than the service period, in which case more_data 4057 * needs to be set 4058 * - fewer than 'cnt' frames, in which case we need to adjust the 4059 * firmware command (but do that unconditionally) 4060 */ 4061 if (single_sta_queue) { 4062 int remaining = cnt; 4063 int sleep_tx_count; 4064 4065 spin_lock_bh(&mvmsta->lock); 4066 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4067 struct iwl_mvm_tid_data *tid_data; 4068 u16 n_queued; 4069 4070 tid_data = &mvmsta->tid_data[tid]; 4071 4072 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4073 if (n_queued > remaining) { 4074 more_data = true; 4075 remaining = 0; 4076 break; 4077 } 4078 remaining -= n_queued; 4079 } 4080 sleep_tx_count = cnt - remaining; 4081 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4082 mvmsta->sleep_tx_count = sleep_tx_count; 4083 spin_unlock_bh(&mvmsta->lock); 4084 4085 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4086 if (WARN_ON(cnt - remaining == 0)) { 4087 ieee80211_sta_eosp(sta); 4088 return; 4089 } 4090 } 4091 4092 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4093 if (more_data) 4094 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4095 4096 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4097 mvmsta->next_status_eosp = true; 4098 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4099 } else { 4100 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4101 } 4102 4103 /* block the Tx queues until the FW updated the sleep Tx count */ 4104 iwl_trans_block_txq_ptrs(mvm->trans, true); 4105 4106 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4107 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 4108 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4109 if (ret) 4110 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4111 } 4112 4113 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4114 struct iwl_rx_cmd_buffer *rxb) 4115 { 4116 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4117 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4118 struct ieee80211_sta *sta; 4119 u32 sta_id = le32_to_cpu(notif->sta_id); 4120 4121 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4122 return; 4123 4124 rcu_read_lock(); 4125 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4126 if (!IS_ERR_OR_NULL(sta)) 4127 ieee80211_sta_eosp(sta); 4128 rcu_read_unlock(); 4129 } 4130 4131 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4132 struct iwl_mvm_sta *mvmsta, 4133 bool disable) 4134 { 4135 struct iwl_mvm_add_sta_cmd cmd = { 4136 .add_modify = STA_MODE_MODIFY, 4137 .sta_id = mvmsta->deflink.sta_id, 4138 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4139 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4140 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4141 }; 4142 int ret; 4143 4144 if (mvm->mld_api_is_used) { 4145 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4146 return; 4147 } 4148 4149 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4150 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4151 if (ret) 4152 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4153 } 4154 4155 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4156 struct ieee80211_sta *sta, 4157 bool disable) 4158 { 4159 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4160 4161 if (mvm->mld_api_is_used) { 4162 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4163 return; 4164 } 4165 4166 spin_lock_bh(&mvm_sta->lock); 4167 4168 if (mvm_sta->disable_tx == disable) { 4169 spin_unlock_bh(&mvm_sta->lock); 4170 return; 4171 } 4172 4173 mvm_sta->disable_tx = disable; 4174 4175 /* 4176 * If sta PS state is handled by mac80211, tell it to start/stop 4177 * queuing tx for this station. 4178 */ 4179 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4180 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4181 4182 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4183 4184 spin_unlock_bh(&mvm_sta->lock); 4185 } 4186 4187 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4188 struct iwl_mvm_vif *mvmvif, 4189 struct iwl_mvm_int_sta *sta, 4190 bool disable) 4191 { 4192 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4193 struct iwl_mvm_add_sta_cmd cmd = { 4194 .add_modify = STA_MODE_MODIFY, 4195 .sta_id = sta->sta_id, 4196 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4197 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4198 .mac_id_n_color = cpu_to_le32(id), 4199 }; 4200 int ret; 4201 4202 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4203 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4204 if (ret) 4205 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4206 } 4207 4208 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4209 struct iwl_mvm_vif *mvmvif, 4210 bool disable) 4211 { 4212 struct ieee80211_sta *sta; 4213 struct iwl_mvm_sta *mvm_sta; 4214 int i; 4215 4216 if (mvm->mld_api_is_used) { 4217 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable); 4218 return; 4219 } 4220 4221 rcu_read_lock(); 4222 4223 /* Block/unblock all the stations of the given mvmvif */ 4224 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4225 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4226 if (IS_ERR_OR_NULL(sta)) 4227 continue; 4228 4229 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4230 if (mvm_sta->mac_id_n_color != 4231 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4232 continue; 4233 4234 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4235 } 4236 4237 rcu_read_unlock(); 4238 4239 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4240 return; 4241 4242 /* Need to block/unblock also multicast station */ 4243 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4244 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4245 &mvmvif->deflink.mcast_sta, 4246 disable); 4247 4248 /* 4249 * Only unblock the broadcast station (FW blocks it for immediate 4250 * quiet, not the driver) 4251 */ 4252 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4253 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4254 &mvmvif->deflink.bcast_sta, 4255 disable); 4256 } 4257 4258 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4259 { 4260 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4261 struct iwl_mvm_sta *mvmsta; 4262 4263 rcu_read_lock(); 4264 4265 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4266 4267 if (mvmsta) 4268 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4269 4270 rcu_read_unlock(); 4271 } 4272 4273 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4274 { 4275 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4276 4277 /* 4278 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4279 * to align the wrap around of ssn so we compare relevant values. 4280 */ 4281 if (mvm->trans->trans_cfg->gen2) 4282 sn &= 0xff; 4283 4284 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4285 } 4286 4287 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4288 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4289 u8 *key, u32 key_len) 4290 { 4291 int ret; 4292 u16 queue; 4293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4294 struct ieee80211_key_conf *keyconf; 4295 4296 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4297 NL80211_IFTYPE_UNSPECIFIED, 4298 IWL_STA_LINK); 4299 if (ret) 4300 return ret; 4301 4302 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4303 addr, sta, &queue, 4304 IWL_MVM_TX_FIFO_BE); 4305 if (ret) 4306 goto out; 4307 4308 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4309 if (!keyconf) { 4310 ret = -ENOBUFS; 4311 goto out; 4312 } 4313 4314 keyconf->cipher = cipher; 4315 memcpy(keyconf->key, key, key_len); 4316 keyconf->keylen = key_len; 4317 4318 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4319 0, NULL, 0, 0, true); 4320 kfree(keyconf); 4321 return 0; 4322 out: 4323 iwl_mvm_dealloc_int_sta(mvm, sta); 4324 return ret; 4325 } 4326 4327 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4328 struct ieee80211_vif *vif, 4329 u32 mac_id) 4330 { 4331 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4332 .mac_id = cpu_to_le32(mac_id), 4333 }; 4334 int ret; 4335 4336 ret = iwl_mvm_send_cmd_pdu(mvm, 4337 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4338 CMD_ASYNC, 4339 sizeof(cancel_channel_switch_cmd), 4340 &cancel_channel_switch_cmd); 4341 if (ret) 4342 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4343 } 4344