1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2025 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 #if defined(__FreeBSD__) 9 #include <linux/cache.h> 10 #endif 11 12 #include "mvm.h" 13 #include "sta.h" 14 #include "rs.h" 15 16 /* 17 * New version of ADD_STA_sta command added new fields at the end of the 18 * structure, so sending the size of the relevant API's structure is enough to 19 * support both API versions. 20 */ 21 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 22 { 23 if (iwl_mvm_has_new_rx_api(mvm) || 24 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 25 return sizeof(struct iwl_mvm_add_sta_cmd); 26 else 27 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 28 } 29 30 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 31 { 32 int sta_id; 33 u32 reserved_ids = 0; 34 35 BUILD_BUG_ON(IWL_STATION_COUNT_MAX > 32); 36 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 37 38 lockdep_assert_held(&mvm->mutex); 39 40 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 41 if (iftype != NL80211_IFTYPE_STATION) 42 reserved_ids = BIT(0); 43 44 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 45 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 46 if (BIT(sta_id) & reserved_ids) 47 continue; 48 49 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 50 lockdep_is_held(&mvm->mutex))) 51 return sta_id; 52 } 53 return IWL_INVALID_STA; 54 } 55 56 /* Calculate the ampdu density and max size */ 57 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 58 struct ieee80211_bss_conf *link_conf, 59 u32 *_agg_size) 60 { 61 u32 agg_size = 0, mpdu_dens = 0; 62 63 if (WARN_ON(!link_sta)) 64 return 0; 65 66 /* Note that we always use only legacy & highest supported PPDUs, so 67 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating 68 * the maximum A-MPDU size of various PPDU types in different bands, 69 * we only need to worry about the highest supported PPDU type here. 70 */ 71 72 if (link_sta->ht_cap.ht_supported) { 73 agg_size = link_sta->ht_cap.ampdu_factor; 74 mpdu_dens = link_sta->ht_cap.ampdu_density; 75 } 76 77 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) { 78 /* overwrite HT values on 6 GHz */ 79 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 80 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 81 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 82 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 83 } else if (link_sta->vht_cap.vht_supported) { 84 /* if VHT supported overwrite HT value */ 85 agg_size = u32_get_bits(link_sta->vht_cap.cap, 86 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); 87 } 88 89 /* D6.0 10.12.2 A-MPDU length limit rules 90 * A STA indicates the maximum length of the A-MPDU preEOF padding 91 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 92 * Exponent field in its HT Capabilities, VHT Capabilities, 93 * and HE 6 GHz Band Capabilities elements (if present) and the 94 * Maximum AMPDU Length Exponent Extension field in its HE 95 * Capabilities element 96 */ 97 if (link_sta->he_cap.has_he) 98 agg_size += 99 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 100 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 101 102 if (link_sta->eht_cap.has_eht) 103 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], 104 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); 105 106 /* Limit to max A-MPDU supported by FW */ 107 agg_size = min_t(u32, agg_size, 108 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); 109 110 *_agg_size = agg_size; 111 return mpdu_dens; 112 } 113 114 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 115 { 116 u8 uapsd_acs = 0; 117 118 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 119 uapsd_acs |= BIT(AC_BK); 120 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 121 uapsd_acs |= BIT(AC_BE); 122 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 123 uapsd_acs |= BIT(AC_VI); 124 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 125 uapsd_acs |= BIT(AC_VO); 126 127 return uapsd_acs | uapsd_acs << 4; 128 } 129 130 /* send station add/update command to firmware */ 131 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 132 bool update, unsigned int flags) 133 { 134 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 135 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 136 .sta_id = mvm_sta->deflink.sta_id, 137 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 138 .add_modify = update ? 1 : 0, 139 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 140 STA_FLG_MIMO_EN_MSK | 141 STA_FLG_RTS_MIMO_PROT), 142 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 143 }; 144 int ret; 145 u32 status; 146 u32 agg_size = 0, mpdu_dens = 0; 147 148 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 149 add_sta_cmd.station_type = mvm_sta->sta_type; 150 151 if (!update || (flags & STA_MODIFY_QUEUES)) { 152 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 153 154 if (!iwl_mvm_has_new_tx_api(mvm)) { 155 add_sta_cmd.tfd_queue_msk = 156 cpu_to_le32(mvm_sta->tfd_queue_msk); 157 158 if (flags & STA_MODIFY_QUEUES) 159 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 160 } else { 161 WARN_ON(flags & STA_MODIFY_QUEUES); 162 } 163 } 164 165 switch (sta->deflink.bandwidth) { 166 case IEEE80211_STA_RX_BW_320: 167 case IEEE80211_STA_RX_BW_160: 168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 169 fallthrough; 170 case IEEE80211_STA_RX_BW_80: 171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 172 fallthrough; 173 case IEEE80211_STA_RX_BW_40: 174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 175 fallthrough; 176 case IEEE80211_STA_RX_BW_20: 177 if (sta->deflink.ht_cap.ht_supported) 178 add_sta_cmd.station_flags |= 179 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 180 break; 181 } 182 183 switch (sta->deflink.rx_nss) { 184 case 1: 185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 186 break; 187 case 2: 188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 189 break; 190 case 3 ... 8: 191 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 192 break; 193 } 194 195 switch (sta->deflink.smps_mode) { 196 case IEEE80211_SMPS_AUTOMATIC: 197 case IEEE80211_SMPS_NUM_MODES: 198 WARN_ON(1); 199 break; 200 case IEEE80211_SMPS_STATIC: 201 /* override NSS */ 202 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 204 break; 205 case IEEE80211_SMPS_DYNAMIC: 206 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 207 break; 208 case IEEE80211_SMPS_OFF: 209 /* nothing */ 210 break; 211 } 212 213 if (sta->deflink.ht_cap.ht_supported || 214 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ) 215 add_sta_cmd.station_flags_msk |= 216 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 217 STA_FLG_AGG_MPDU_DENS_MSK); 218 219 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 220 &mvm_sta->vif->bss_conf, 221 &agg_size); 222 add_sta_cmd.station_flags |= 223 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 224 add_sta_cmd.station_flags |= 225 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 226 227 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 228 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 229 230 if (sta->wme) { 231 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 232 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 233 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 234 } 235 236 status = ADD_STA_SUCCESS; 237 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 238 iwl_mvm_add_sta_cmd_size(mvm), 239 &add_sta_cmd, &status); 240 if (ret) 241 return ret; 242 243 switch (status & IWL_ADD_STA_STATUS_MASK) { 244 case ADD_STA_SUCCESS: 245 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 246 break; 247 default: 248 ret = -EIO; 249 IWL_ERR(mvm, "ADD_STA failed\n"); 250 break; 251 } 252 253 return ret; 254 } 255 256 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 257 { 258 struct iwl_mvm_baid_data *data = 259 timer_container_of(data, t, session_timer); 260 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 261 struct iwl_mvm_baid_data *ba_data; 262 struct ieee80211_sta *sta; 263 struct iwl_mvm_sta *mvm_sta; 264 unsigned long timeout; 265 unsigned int sta_id; 266 267 rcu_read_lock(); 268 269 ba_data = rcu_dereference(*rcu_ptr); 270 271 if (WARN_ON(!ba_data)) 272 goto unlock; 273 274 if (!ba_data->timeout) 275 goto unlock; 276 277 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 278 if (time_is_after_jiffies(timeout)) { 279 mod_timer(&ba_data->session_timer, timeout); 280 goto unlock; 281 } 282 283 /* Timer expired */ 284 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 285 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 286 287 /* 288 * sta should be valid unless the following happens: 289 * The firmware asserts which triggers a reconfig flow, but 290 * the reconfig fails before we set the pointer to sta into 291 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 292 * A-MDPU and hence the timer continues to run. Then, the 293 * timer expires and sta is NULL. 294 */ 295 if (IS_ERR_OR_NULL(sta)) 296 goto unlock; 297 298 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 299 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 300 sta->addr, ba_data->tid); 301 unlock: 302 rcu_read_unlock(); 303 } 304 305 /* Disable aggregations for a bitmap of TIDs for a given station */ 306 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 307 unsigned long disable_agg_tids, 308 bool remove_queue) 309 { 310 struct iwl_mvm_add_sta_cmd cmd = {}; 311 struct ieee80211_sta *sta; 312 struct iwl_mvm_sta *mvmsta; 313 u32 status; 314 u8 sta_id; 315 316 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 317 return -EINVAL; 318 319 sta_id = mvm->queue_info[queue].ra_sta_id; 320 321 rcu_read_lock(); 322 323 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 324 325 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 326 rcu_read_unlock(); 327 return -EINVAL; 328 } 329 330 mvmsta = iwl_mvm_sta_from_mac80211(sta); 331 332 mvmsta->tid_disable_agg |= disable_agg_tids; 333 334 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 335 cmd.sta_id = mvmsta->deflink.sta_id; 336 cmd.add_modify = STA_MODE_MODIFY; 337 cmd.modify_mask = STA_MODIFY_QUEUES; 338 if (disable_agg_tids) 339 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 340 if (remove_queue) 341 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 342 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 343 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 344 345 rcu_read_unlock(); 346 347 /* Notify FW of queue removal from the STA queues */ 348 status = ADD_STA_SUCCESS; 349 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 350 iwl_mvm_add_sta_cmd_size(mvm), 351 &cmd, &status); 352 } 353 354 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 355 int sta_id, u16 *queueptr, u8 tid) 356 { 357 int queue = *queueptr; 358 struct iwl_scd_txq_cfg_cmd cmd = { 359 .scd_queue = queue, 360 .action = SCD_CFG_DISABLE_QUEUE, 361 }; 362 int ret; 363 364 lockdep_assert_held(&mvm->mutex); 365 366 if (iwl_mvm_has_new_tx_api(mvm)) { 367 if (mvm->sta_remove_requires_queue_remove) { 368 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 369 SCD_QUEUE_CONFIG_CMD); 370 struct iwl_scd_queue_cfg_cmd remove_cmd = { 371 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 372 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 373 }; 374 375 if (tid == IWL_MAX_TID_COUNT) 376 tid = IWL_MGMT_TID; 377 378 remove_cmd.u.remove.tid = cpu_to_le32(tid); 379 380 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 381 sizeof(remove_cmd), 382 &remove_cmd); 383 } else { 384 ret = 0; 385 } 386 387 iwl_trans_txq_free(mvm->trans, queue); 388 *queueptr = IWL_MVM_INVALID_QUEUE; 389 390 return ret; 391 } 392 393 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 394 return 0; 395 396 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 397 398 cmd.action = mvm->queue_info[queue].tid_bitmap ? 399 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 400 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 401 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 402 403 IWL_DEBUG_TX_QUEUES(mvm, 404 "Disabling TXQ #%d tids=0x%x\n", 405 queue, 406 mvm->queue_info[queue].tid_bitmap); 407 408 /* If the queue is still enabled - nothing left to do in this func */ 409 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 410 return 0; 411 412 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 413 cmd.tid = mvm->queue_info[queue].txq_tid; 414 415 /* Make sure queue info is correct even though we overwrite it */ 416 WARN(mvm->queue_info[queue].tid_bitmap, 417 "TXQ #%d info out-of-sync - tids=0x%x\n", 418 queue, mvm->queue_info[queue].tid_bitmap); 419 420 /* If we are here - the queue is freed and we can zero out these vals */ 421 mvm->queue_info[queue].tid_bitmap = 0; 422 423 if (sta) { 424 struct iwl_mvm_txq *mvmtxq = 425 iwl_mvm_txq_from_tid(sta, tid); 426 427 spin_lock_bh(&mvm->add_stream_lock); 428 list_del_init(&mvmtxq->list); 429 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 430 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 431 spin_unlock_bh(&mvm->add_stream_lock); 432 } 433 434 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 435 mvm->queue_info[queue].reserved = false; 436 437 iwl_trans_txq_disable(mvm->trans, queue, false); 438 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 439 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 440 441 if (ret) 442 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 443 queue, ret); 444 return ret; 445 } 446 447 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 448 { 449 struct ieee80211_sta *sta; 450 struct iwl_mvm_sta *mvmsta; 451 unsigned long tid_bitmap; 452 unsigned long agg_tids = 0; 453 u8 sta_id; 454 int tid; 455 456 lockdep_assert_held(&mvm->mutex); 457 458 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 459 return -EINVAL; 460 461 sta_id = mvm->queue_info[queue].ra_sta_id; 462 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 463 464 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 465 lockdep_is_held(&mvm->mutex)); 466 467 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 468 return -EINVAL; 469 470 mvmsta = iwl_mvm_sta_from_mac80211(sta); 471 472 spin_lock_bh(&mvmsta->lock); 473 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 474 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 475 agg_tids |= BIT(tid); 476 } 477 spin_unlock_bh(&mvmsta->lock); 478 479 return agg_tids; 480 } 481 482 /* 483 * Remove a queue from a station's resources. 484 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 485 * doesn't disable the queue 486 */ 487 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 488 { 489 struct ieee80211_sta *sta; 490 struct iwl_mvm_sta *mvmsta; 491 unsigned long tid_bitmap; 492 unsigned long disable_agg_tids = 0; 493 u8 sta_id; 494 int tid; 495 496 lockdep_assert_held(&mvm->mutex); 497 498 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 499 return -EINVAL; 500 501 sta_id = mvm->queue_info[queue].ra_sta_id; 502 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 503 504 rcu_read_lock(); 505 506 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 507 508 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 509 rcu_read_unlock(); 510 return 0; 511 } 512 513 mvmsta = iwl_mvm_sta_from_mac80211(sta); 514 515 spin_lock_bh(&mvmsta->lock); 516 /* Unmap MAC queues and TIDs from this queue */ 517 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 518 struct iwl_mvm_txq *mvmtxq = 519 iwl_mvm_txq_from_tid(sta, tid); 520 521 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 522 disable_agg_tids |= BIT(tid); 523 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 524 525 spin_lock_bh(&mvm->add_stream_lock); 526 list_del_init(&mvmtxq->list); 527 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 528 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 529 spin_unlock_bh(&mvm->add_stream_lock); 530 } 531 532 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 533 spin_unlock_bh(&mvmsta->lock); 534 535 rcu_read_unlock(); 536 537 /* 538 * The TX path may have been using this TXQ_ID from the tid_data, 539 * so make sure it's no longer running so that we can safely reuse 540 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 541 * above, but nothing guarantees we've stopped using them. Thus, 542 * without this, we could get to iwl_mvm_disable_txq() and remove 543 * the queue while still sending frames to it. 544 */ 545 synchronize_net(); 546 547 return disable_agg_tids; 548 } 549 550 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 551 struct ieee80211_sta *old_sta, 552 u8 new_sta_id) 553 { 554 struct iwl_mvm_sta *mvmsta; 555 u8 sta_id, tid; 556 unsigned long disable_agg_tids = 0; 557 bool same_sta; 558 u16 queue_tmp = queue; 559 int ret; 560 561 lockdep_assert_held(&mvm->mutex); 562 563 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 564 return -EINVAL; 565 566 sta_id = mvm->queue_info[queue].ra_sta_id; 567 tid = mvm->queue_info[queue].txq_tid; 568 569 same_sta = sta_id == new_sta_id; 570 571 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 572 if (WARN_ON(!mvmsta)) 573 return -EINVAL; 574 575 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 576 /* Disable the queue */ 577 if (disable_agg_tids) 578 iwl_mvm_invalidate_sta_queue(mvm, queue, 579 disable_agg_tids, false); 580 581 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 582 if (ret) { 583 IWL_ERR(mvm, 584 "Failed to free inactive queue %d (ret=%d)\n", 585 queue, ret); 586 587 return ret; 588 } 589 590 /* If TXQ is allocated to another STA, update removal in FW */ 591 if (!same_sta) 592 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 593 594 return 0; 595 } 596 597 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 598 unsigned long tfd_queue_mask, u8 ac) 599 { 600 int queue = 0; 601 u8 ac_to_queue[IEEE80211_NUM_ACS]; 602 int i; 603 604 /* 605 * This protects us against grabbing a queue that's being reconfigured 606 * by the inactivity checker. 607 */ 608 lockdep_assert_held(&mvm->mutex); 609 610 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 611 return -EINVAL; 612 613 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 614 615 /* See what ACs the existing queues for this STA have */ 616 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 617 /* Only DATA queues can be shared */ 618 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 619 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 620 continue; 621 622 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 623 } 624 625 /* 626 * The queue to share is chosen only from DATA queues as follows (in 627 * descending priority): 628 * 1. An AC_BE queue 629 * 2. Same AC queue 630 * 3. Highest AC queue that is lower than new AC 631 * 4. Any existing AC (there always is at least 1 DATA queue) 632 */ 633 634 /* Priority 1: An AC_BE queue */ 635 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 636 queue = ac_to_queue[IEEE80211_AC_BE]; 637 /* Priority 2: Same AC queue */ 638 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 639 queue = ac_to_queue[ac]; 640 /* Priority 3a: If new AC is VO and VI exists - use VI */ 641 else if (ac == IEEE80211_AC_VO && 642 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 643 queue = ac_to_queue[IEEE80211_AC_VI]; 644 /* Priority 3b: No BE so only AC less than the new one is BK */ 645 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 646 queue = ac_to_queue[IEEE80211_AC_BK]; 647 /* Priority 4a: No BE nor BK - use VI if exists */ 648 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 649 queue = ac_to_queue[IEEE80211_AC_VI]; 650 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 651 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 652 queue = ac_to_queue[IEEE80211_AC_VO]; 653 654 /* Make sure queue found (or not) is legal */ 655 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 656 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 657 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 658 IWL_ERR(mvm, "No DATA queues available to share\n"); 659 return -ENOSPC; 660 } 661 662 return queue; 663 } 664 665 /* Re-configure the SCD for a queue that has already been configured */ 666 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 667 int sta_id, int tid, int frame_limit, u16 ssn) 668 { 669 struct iwl_scd_txq_cfg_cmd cmd = { 670 .scd_queue = queue, 671 .action = SCD_CFG_ENABLE_QUEUE, 672 .window = frame_limit, 673 .sta_id = sta_id, 674 .ssn = cpu_to_le16(ssn), 675 .tx_fifo = fifo, 676 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 677 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 678 .tid = tid, 679 }; 680 int ret; 681 682 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 683 return -EINVAL; 684 685 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 686 "Trying to reconfig unallocated queue %d\n", queue)) 687 return -ENXIO; 688 689 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 690 691 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 692 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 693 queue, fifo, ret); 694 695 return ret; 696 } 697 698 /* 699 * If a given queue has a higher AC than the TID stream that is being compared 700 * to, the queue needs to be redirected to the lower AC. This function does that 701 * in such a case, otherwise - if no redirection required - it does nothing, 702 * unless the %force param is true. 703 */ 704 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 705 int ac, int ssn, unsigned int wdg_timeout, 706 bool force, struct iwl_mvm_txq *txq) 707 { 708 struct iwl_scd_txq_cfg_cmd cmd = { 709 .scd_queue = queue, 710 .action = SCD_CFG_DISABLE_QUEUE, 711 }; 712 bool shared_queue; 713 int ret; 714 715 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 716 return -EINVAL; 717 718 /* 719 * If the AC is lower than current one - FIFO needs to be redirected to 720 * the lowest one of the streams in the queue. Check if this is needed 721 * here. 722 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 723 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 724 * we need to check if the numerical value of X is LARGER than of Y. 725 */ 726 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 727 IWL_DEBUG_TX_QUEUES(mvm, 728 "No redirection needed on TXQ #%d\n", 729 queue); 730 return 0; 731 } 732 733 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 734 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 735 cmd.tid = mvm->queue_info[queue].txq_tid; 736 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 737 738 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 739 queue, iwl_mvm_ac_to_tx_fifo[ac]); 740 741 /* Stop the queue and wait for it to empty */ 742 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 743 744 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 745 if (ret) { 746 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 747 queue); 748 ret = -EIO; 749 goto out; 750 } 751 752 /* Before redirecting the queue we need to de-activate it */ 753 iwl_trans_txq_disable(mvm->trans, queue, false); 754 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 755 if (ret) 756 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 757 ret); 758 759 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 760 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 761 762 /* Update the TID "owner" of the queue */ 763 mvm->queue_info[queue].txq_tid = tid; 764 765 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 766 767 /* Redirect to lower AC */ 768 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 769 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 770 771 /* Update AC marking of the queue */ 772 mvm->queue_info[queue].mac80211_ac = ac; 773 774 /* 775 * Mark queue as shared in transport if shared 776 * Note this has to be done after queue enablement because enablement 777 * can also set this value, and there is no indication there to shared 778 * queues 779 */ 780 if (shared_queue) 781 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 782 783 out: 784 /* Continue using the queue */ 785 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 786 787 return ret; 788 } 789 790 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 791 u8 minq, u8 maxq) 792 { 793 int i; 794 795 lockdep_assert_held(&mvm->mutex); 796 797 if (WARN(maxq >= mvm->trans->mac_cfg->base->num_of_queues, 798 "max queue %d >= num_of_queues (%d)", maxq, 799 mvm->trans->mac_cfg->base->num_of_queues)) 800 maxq = mvm->trans->mac_cfg->base->num_of_queues - 1; 801 802 /* This should not be hit with new TX path */ 803 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 804 return -ENOSPC; 805 806 /* Start by looking for a free queue */ 807 for (i = minq; i <= maxq; i++) 808 if (mvm->queue_info[i].tid_bitmap == 0 && 809 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 810 return i; 811 812 return -ENOSPC; 813 } 814 815 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 816 { 817 int max_size = IWL_DEFAULT_QUEUE_SIZE; 818 unsigned int link_id; 819 820 /* this queue isn't used for traffic (cab_queue) */ 821 if (!sta) 822 return IWL_MGMT_QUEUE_SIZE; 823 824 rcu_read_lock(); 825 826 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 827 struct ieee80211_link_sta *link = 828 rcu_dereference(sta->link[link_id]); 829 830 if (!link) 831 continue; 832 833 /* support for 512 ba size */ 834 if (link->eht_cap.has_eht && 835 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 836 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 837 838 /* support for 256 ba size */ 839 if (link->he_cap.has_he && 840 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 841 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 842 } 843 844 rcu_read_unlock(); 845 return max_size; 846 } 847 848 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 849 struct ieee80211_sta *sta, 850 u8 sta_id, u8 tid, unsigned int timeout) 851 { 852 int queue, size; 853 u32 sta_mask = 0; 854 855 if (tid == IWL_MAX_TID_COUNT) { 856 tid = IWL_MGMT_TID; 857 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 858 mvm->trans->mac_cfg->base->min_txq_size); 859 } else { 860 size = iwl_mvm_get_queue_size(sta); 861 } 862 863 if (sta) { 864 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 865 struct ieee80211_link_sta *link_sta; 866 unsigned int link_id; 867 868 rcu_read_lock(); 869 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) { 870 struct iwl_mvm_link_sta *link = 871 rcu_dereference_protected(mvmsta->link[link_id], 872 lockdep_is_held(&mvm->mutex)); 873 874 if (!link) 875 continue; 876 877 sta_mask |= BIT(link->sta_id); 878 } 879 rcu_read_unlock(); 880 } else { 881 sta_mask |= BIT(sta_id); 882 } 883 884 if (!sta_mask) 885 return -EINVAL; 886 887 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 888 tid, size, timeout); 889 890 if (queue >= 0) 891 IWL_DEBUG_TX_QUEUES(mvm, 892 "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 893 queue, sta_mask, tid); 894 895 return queue; 896 } 897 898 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 899 struct ieee80211_sta *sta, u8 ac, 900 int tid) 901 { 902 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 903 struct iwl_mvm_txq *mvmtxq = 904 iwl_mvm_txq_from_tid(sta, tid); 905 unsigned int wdg_timeout = 906 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 907 int queue = -1; 908 909 lockdep_assert_held(&mvm->mutex); 910 911 IWL_DEBUG_TX_QUEUES(mvm, 912 "Allocating queue for sta %d on tid %d\n", 913 mvmsta->deflink.sta_id, tid); 914 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 915 tid, wdg_timeout); 916 if (queue < 0) 917 return queue; 918 919 mvmtxq->txq_id = queue; 920 mvm->tvqm_info[queue].txq_tid = tid; 921 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 922 923 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 924 925 spin_lock_bh(&mvmsta->lock); 926 mvmsta->tid_data[tid].txq_id = queue; 927 spin_unlock_bh(&mvmsta->lock); 928 929 return 0; 930 } 931 932 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 933 struct ieee80211_sta *sta, 934 int queue, u8 sta_id, u8 tid) 935 { 936 bool enable_queue = true; 937 938 /* Make sure this TID isn't already enabled */ 939 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 940 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 941 queue, tid); 942 return false; 943 } 944 945 /* Update mappings and refcounts */ 946 if (mvm->queue_info[queue].tid_bitmap) 947 enable_queue = false; 948 949 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 950 mvm->queue_info[queue].ra_sta_id = sta_id; 951 952 if (enable_queue) { 953 if (tid != IWL_MAX_TID_COUNT) 954 mvm->queue_info[queue].mac80211_ac = 955 tid_to_mac80211_ac[tid]; 956 else 957 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 958 959 mvm->queue_info[queue].txq_tid = tid; 960 } 961 962 if (sta) { 963 struct iwl_mvm_txq *mvmtxq = 964 iwl_mvm_txq_from_tid(sta, tid); 965 966 mvmtxq->txq_id = queue; 967 } 968 969 IWL_DEBUG_TX_QUEUES(mvm, 970 "Enabling TXQ #%d tids=0x%x\n", 971 queue, mvm->queue_info[queue].tid_bitmap); 972 973 return enable_queue; 974 } 975 976 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 977 int queue, u16 ssn, 978 const struct iwl_trans_txq_scd_cfg *cfg, 979 unsigned int wdg_timeout) 980 { 981 struct iwl_scd_txq_cfg_cmd cmd = { 982 .scd_queue = queue, 983 .action = SCD_CFG_ENABLE_QUEUE, 984 .window = cfg->frame_limit, 985 .sta_id = cfg->sta_id, 986 .ssn = cpu_to_le16(ssn), 987 .tx_fifo = cfg->fifo, 988 .aggregate = cfg->aggregate, 989 .tid = cfg->tid, 990 }; 991 bool inc_ssn; 992 993 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 994 return false; 995 996 /* Send the enabling command if we need to */ 997 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 998 return false; 999 1000 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 1001 NULL, wdg_timeout); 1002 if (inc_ssn) 1003 le16_add_cpu(&cmd.ssn, 1); 1004 1005 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1006 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1007 1008 return inc_ssn; 1009 } 1010 1011 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1012 { 1013 struct iwl_scd_txq_cfg_cmd cmd = { 1014 .scd_queue = queue, 1015 .action = SCD_CFG_UPDATE_QUEUE_TID, 1016 }; 1017 int tid; 1018 unsigned long tid_bitmap; 1019 int ret; 1020 1021 lockdep_assert_held(&mvm->mutex); 1022 1023 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1024 return; 1025 1026 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1027 1028 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1029 return; 1030 1031 /* Find any TID for queue */ 1032 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1033 cmd.tid = tid; 1034 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1035 1036 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1037 if (ret) { 1038 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1039 queue, ret); 1040 return; 1041 } 1042 1043 mvm->queue_info[queue].txq_tid = tid; 1044 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1045 queue, tid); 1046 } 1047 1048 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1049 { 1050 struct ieee80211_sta *sta; 1051 struct iwl_mvm_sta *mvmsta; 1052 u8 sta_id; 1053 int tid = -1; 1054 unsigned long tid_bitmap; 1055 unsigned int wdg_timeout; 1056 int ssn; 1057 int ret = true; 1058 1059 /* queue sharing is disabled on new TX path */ 1060 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1061 return; 1062 1063 lockdep_assert_held(&mvm->mutex); 1064 1065 sta_id = mvm->queue_info[queue].ra_sta_id; 1066 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1067 1068 /* Find TID for queue, and make sure it is the only one on the queue */ 1069 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1070 if (tid_bitmap != BIT(tid)) { 1071 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1072 queue, tid_bitmap); 1073 return; 1074 } 1075 1076 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1077 tid); 1078 1079 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1080 lockdep_is_held(&mvm->mutex)); 1081 1082 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1083 return; 1084 1085 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1086 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 1087 1088 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1089 1090 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1091 tid_to_mac80211_ac[tid], ssn, 1092 wdg_timeout, true, 1093 iwl_mvm_txq_from_tid(sta, tid)); 1094 if (ret) { 1095 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1096 return; 1097 } 1098 1099 /* If aggs should be turned back on - do it */ 1100 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1101 struct iwl_mvm_add_sta_cmd cmd = {0}; 1102 1103 mvmsta->tid_disable_agg &= ~BIT(tid); 1104 1105 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1106 cmd.sta_id = mvmsta->deflink.sta_id; 1107 cmd.add_modify = STA_MODE_MODIFY; 1108 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1109 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1110 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1111 1112 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1113 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1114 if (!ret) { 1115 IWL_DEBUG_TX_QUEUES(mvm, 1116 "TXQ #%d is now aggregated again\n", 1117 queue); 1118 1119 /* Mark queue intenally as aggregating again */ 1120 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1121 } 1122 } 1123 1124 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1125 } 1126 1127 /* 1128 * Remove inactive TIDs of a given queue. 1129 * If all queue TIDs are inactive - mark the queue as inactive 1130 * If only some the queue TIDs are inactive - unmap them from the queue 1131 * 1132 * Returns %true if all TIDs were removed and the queue could be reused. 1133 */ 1134 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1135 struct iwl_mvm_sta *mvmsta, int queue, 1136 unsigned long tid_bitmap, 1137 unsigned long *unshare_queues, 1138 unsigned long *changetid_queues) 1139 { 1140 unsigned int tid; 1141 1142 lockdep_assert_held(&mvmsta->lock); 1143 lockdep_assert_held(&mvm->mutex); 1144 1145 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1146 return false; 1147 1148 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1149 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1150 /* If some TFDs are still queued - don't mark TID as inactive */ 1151 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1152 tid_bitmap &= ~BIT(tid); 1153 1154 /* Don't mark as inactive any TID that has an active BA */ 1155 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1156 tid_bitmap &= ~BIT(tid); 1157 } 1158 1159 /* If all TIDs in the queue are inactive - return it can be reused */ 1160 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1161 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1162 return true; 1163 } 1164 1165 /* 1166 * If we are here, this is a shared queue and not all TIDs timed-out. 1167 * Remove the ones that did. 1168 */ 1169 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1170 u16 q_tid_bitmap; 1171 1172 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1173 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1174 1175 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1176 1177 /* 1178 * We need to take into account a situation in which a TXQ was 1179 * allocated to TID x, and then turned shared by adding TIDs y 1180 * and z. If TID x becomes inactive and is removed from the TXQ, 1181 * ownership must be given to one of the remaining TIDs. 1182 * This is mainly because if TID x continues - a new queue can't 1183 * be allocated for it as long as it is an owner of another TXQ. 1184 * 1185 * Mark this queue in the right bitmap, we'll send the command 1186 * to the firmware later. 1187 */ 1188 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1189 set_bit(queue, changetid_queues); 1190 1191 IWL_DEBUG_TX_QUEUES(mvm, 1192 "Removing inactive TID %d from shared Q:%d\n", 1193 tid, queue); 1194 } 1195 1196 IWL_DEBUG_TX_QUEUES(mvm, 1197 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1198 mvm->queue_info[queue].tid_bitmap); 1199 1200 /* 1201 * There may be different TIDs with the same mac queues, so make 1202 * sure all TIDs have existing corresponding mac queues enabled 1203 */ 1204 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1205 1206 /* If the queue is marked as shared - "unshare" it */ 1207 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1208 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1209 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1210 queue); 1211 set_bit(queue, unshare_queues); 1212 } 1213 1214 return false; 1215 } 1216 1217 /* 1218 * Check for inactivity - this includes checking if any queue 1219 * can be unshared and finding one (and only one) that can be 1220 * reused. 1221 * This function is also invoked as a sort of clean-up task, 1222 * in which case @alloc_for_sta is IWL_INVALID_STA. 1223 * 1224 * Returns the queue number, or -ENOSPC. 1225 */ 1226 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1227 { 1228 unsigned long now = jiffies; 1229 unsigned long unshare_queues = 0; 1230 unsigned long changetid_queues = 0; 1231 int i, ret, free_queue = -ENOSPC; 1232 struct ieee80211_sta *queue_owner = NULL; 1233 1234 lockdep_assert_held(&mvm->mutex); 1235 1236 if (iwl_mvm_has_new_tx_api(mvm)) 1237 return -ENOSPC; 1238 1239 rcu_read_lock(); 1240 1241 /* we skip the CMD queue below by starting at 1 */ 1242 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1243 1244 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1245 struct ieee80211_sta *sta; 1246 struct iwl_mvm_sta *mvmsta; 1247 u8 sta_id; 1248 int tid; 1249 unsigned long inactive_tid_bitmap = 0; 1250 unsigned long queue_tid_bitmap; 1251 1252 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1253 if (!queue_tid_bitmap) 1254 continue; 1255 1256 /* If TXQ isn't in active use anyway - nothing to do here... */ 1257 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1258 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1259 continue; 1260 1261 /* Check to see if there are inactive TIDs on this queue */ 1262 for_each_set_bit(tid, &queue_tid_bitmap, 1263 IWL_MAX_TID_COUNT + 1) { 1264 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1265 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1266 continue; 1267 1268 inactive_tid_bitmap |= BIT(tid); 1269 } 1270 1271 /* If all TIDs are active - finish check on this queue */ 1272 if (!inactive_tid_bitmap) 1273 continue; 1274 1275 /* 1276 * If we are here - the queue hadn't been served recently and is 1277 * in use 1278 */ 1279 1280 sta_id = mvm->queue_info[i].ra_sta_id; 1281 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1282 1283 /* 1284 * If the STA doesn't exist anymore, it isn't an error. It could 1285 * be that it was removed since getting the queues, and in this 1286 * case it should've inactivated its queues anyway. 1287 */ 1288 if (IS_ERR_OR_NULL(sta)) 1289 continue; 1290 1291 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1292 1293 spin_lock_bh(&mvmsta->lock); 1294 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1295 inactive_tid_bitmap, 1296 &unshare_queues, 1297 &changetid_queues); 1298 if (ret && free_queue < 0) { 1299 queue_owner = sta; 1300 free_queue = i; 1301 } 1302 /* only unlock sta lock - we still need the queue info lock */ 1303 spin_unlock_bh(&mvmsta->lock); 1304 } 1305 1306 1307 /* Reconfigure queues requiring reconfiguation */ 1308 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1309 iwl_mvm_unshare_queue(mvm, i); 1310 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1311 iwl_mvm_change_queue_tid(mvm, i); 1312 1313 rcu_read_unlock(); 1314 1315 if (free_queue >= 0 && alloc_for_sta != IWL_INVALID_STA) { 1316 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1317 alloc_for_sta); 1318 if (ret) 1319 return ret; 1320 } 1321 1322 return free_queue; 1323 } 1324 1325 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1326 struct ieee80211_sta *sta, u8 ac, int tid) 1327 { 1328 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1329 struct iwl_trans_txq_scd_cfg cfg = { 1330 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1331 .sta_id = mvmsta->deflink.sta_id, 1332 .tid = tid, 1333 .frame_limit = IWL_FRAME_LIMIT, 1334 }; 1335 unsigned int wdg_timeout = 1336 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif); 1337 int queue = -1; 1338 u16 queue_tmp; 1339 unsigned long disable_agg_tids = 0; 1340 enum iwl_mvm_agg_state queue_state; 1341 bool shared_queue = false, inc_ssn; 1342 int ssn; 1343 unsigned long tfd_queue_mask; 1344 int ret; 1345 1346 lockdep_assert_held(&mvm->mutex); 1347 1348 if (iwl_mvm_has_new_tx_api(mvm)) 1349 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1350 1351 spin_lock_bh(&mvmsta->lock); 1352 tfd_queue_mask = mvmsta->tfd_queue_msk; 1353 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1354 spin_unlock_bh(&mvmsta->lock); 1355 1356 if (tid == IWL_MAX_TID_COUNT) { 1357 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1358 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1359 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1360 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1361 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1362 queue); 1363 1364 /* If no such queue is found, we'll use a DATA queue instead */ 1365 } 1366 1367 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1368 (mvm->queue_info[mvmsta->reserved_queue].status == 1369 IWL_MVM_QUEUE_RESERVED)) { 1370 queue = mvmsta->reserved_queue; 1371 mvm->queue_info[queue].reserved = true; 1372 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1373 } 1374 1375 if (queue < 0) 1376 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1377 IWL_MVM_DQA_MIN_DATA_QUEUE, 1378 IWL_MVM_DQA_MAX_DATA_QUEUE); 1379 if (queue < 0) { 1380 /* try harder - perhaps kill an inactive queue */ 1381 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1382 } 1383 1384 /* No free queue - we'll have to share */ 1385 if (queue <= 0) { 1386 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1387 if (queue > 0) { 1388 shared_queue = true; 1389 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1390 } 1391 } 1392 1393 /* 1394 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1395 * to make sure no one else takes it. 1396 * This will allow avoiding re-acquiring the lock at the end of the 1397 * configuration. On error we'll mark it back as free. 1398 */ 1399 if (queue > 0 && !shared_queue) 1400 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1401 1402 /* This shouldn't happen - out of queues */ 1403 if (WARN_ON(queue <= 0)) { 1404 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1405 tid, cfg.sta_id); 1406 return queue; 1407 } 1408 1409 /* 1410 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1411 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1412 * as aggregatable. 1413 * Mark all DATA queues as allowing to be aggregated at some point 1414 */ 1415 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1416 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1417 1418 IWL_DEBUG_TX_QUEUES(mvm, 1419 "Allocating %squeue #%d to sta %d on tid %d\n", 1420 shared_queue ? "shared " : "", queue, 1421 mvmsta->deflink.sta_id, tid); 1422 1423 if (shared_queue) { 1424 /* Disable any open aggs on this queue */ 1425 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1426 1427 if (disable_agg_tids) { 1428 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1429 queue); 1430 iwl_mvm_invalidate_sta_queue(mvm, queue, 1431 disable_agg_tids, false); 1432 } 1433 } 1434 1435 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1436 1437 /* 1438 * Mark queue as shared in transport if shared 1439 * Note this has to be done after queue enablement because enablement 1440 * can also set this value, and there is no indication there to shared 1441 * queues 1442 */ 1443 if (shared_queue) 1444 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1445 1446 spin_lock_bh(&mvmsta->lock); 1447 /* 1448 * This looks racy, but it is not. We have only one packet for 1449 * this ra/tid in our Tx path since we stop the Qdisc when we 1450 * need to allocate a new TFD queue. 1451 */ 1452 if (inc_ssn) { 1453 mvmsta->tid_data[tid].seq_number += 0x10; 1454 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1455 } 1456 mvmsta->tid_data[tid].txq_id = queue; 1457 mvmsta->tfd_queue_msk |= BIT(queue); 1458 queue_state = mvmsta->tid_data[tid].state; 1459 1460 if (mvmsta->reserved_queue == queue) 1461 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1462 spin_unlock_bh(&mvmsta->lock); 1463 1464 if (!shared_queue) { 1465 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1466 if (ret) 1467 goto out_err; 1468 1469 /* If we need to re-enable aggregations... */ 1470 if (queue_state == IWL_AGG_ON) { 1471 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1472 if (ret) 1473 goto out_err; 1474 } 1475 } else { 1476 /* Redirect queue, if needed */ 1477 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1478 wdg_timeout, false, 1479 iwl_mvm_txq_from_tid(sta, tid)); 1480 if (ret) 1481 goto out_err; 1482 } 1483 1484 return 0; 1485 1486 out_err: 1487 queue_tmp = queue; 1488 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1489 1490 return ret; 1491 } 1492 1493 int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm, 1494 struct ieee80211_txq *txq) 1495 { 1496 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1497 int ret = -EINVAL; 1498 1499 lockdep_assert_held(&mvm->mutex); 1500 1501 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) || 1502 !txq->sta) { 1503 return 0; 1504 } 1505 1506 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) { 1507 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1508 ret = 0; 1509 } 1510 1511 local_bh_disable(); 1512 spin_lock(&mvm->add_stream_lock); 1513 if (!list_empty(&mvmtxq->list)) 1514 list_del_init(&mvmtxq->list); 1515 spin_unlock(&mvm->add_stream_lock); 1516 local_bh_enable(); 1517 1518 return ret; 1519 } 1520 1521 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1522 { 1523 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1524 add_stream_wk); 1525 1526 guard(mvm)(mvm); 1527 1528 /* will reschedule to run after restart */ 1529 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) || 1530 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1531 return; 1532 1533 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA); 1534 1535 while (!list_empty(&mvm->add_stream_txqs)) { 1536 struct iwl_mvm_txq *mvmtxq; 1537 struct ieee80211_txq *txq; 1538 u8 tid; 1539 1540 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1541 struct iwl_mvm_txq, list); 1542 1543 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1544 drv_priv); 1545 tid = txq->tid; 1546 if (tid == IEEE80211_NUM_TIDS) 1547 tid = IWL_MAX_TID_COUNT; 1548 1549 /* 1550 * We can't really do much here, but if this fails we can't 1551 * transmit anyway - so just don't transmit the frame etc. 1552 * and let them back up ... we've tried our best to allocate 1553 * a queue in the function itself. 1554 */ 1555 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1556 spin_lock_bh(&mvm->add_stream_lock); 1557 list_del_init(&mvmtxq->list); 1558 spin_unlock_bh(&mvm->add_stream_lock); 1559 continue; 1560 } 1561 1562 /* now we're ready, any remaining races/concurrency will be 1563 * handled in iwl_mvm_mac_itxq_xmit() 1564 */ 1565 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1566 1567 local_bh_disable(); 1568 spin_lock(&mvm->add_stream_lock); 1569 list_del_init(&mvmtxq->list); 1570 spin_unlock(&mvm->add_stream_lock); 1571 1572 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1573 local_bh_enable(); 1574 } 1575 } 1576 1577 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1578 struct ieee80211_sta *sta, 1579 enum nl80211_iftype vif_type) 1580 { 1581 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1582 int queue; 1583 1584 /* queue reserving is disabled on new TX path */ 1585 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1586 return 0; 1587 1588 /* run the general cleanup/unsharing of queues */ 1589 iwl_mvm_inactivity_check(mvm, IWL_INVALID_STA); 1590 1591 /* Make sure we have free resources for this STA */ 1592 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1593 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1594 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1595 IWL_MVM_QUEUE_FREE)) 1596 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1597 else 1598 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1599 IWL_MVM_DQA_MIN_DATA_QUEUE, 1600 IWL_MVM_DQA_MAX_DATA_QUEUE); 1601 if (queue < 0) { 1602 /* try again - this time kick out a queue if needed */ 1603 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1604 if (queue < 0) { 1605 IWL_ERR(mvm, "No available queues for new station\n"); 1606 return -ENOSPC; 1607 } 1608 } 1609 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1610 1611 mvmsta->reserved_queue = queue; 1612 1613 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1614 queue, mvmsta->deflink.sta_id); 1615 1616 return 0; 1617 } 1618 1619 /* 1620 * In DQA mode, after a HW restart the queues should be allocated as before, in 1621 * order to avoid race conditions when there are shared queues. This function 1622 * does the re-mapping and queue allocation. 1623 * 1624 * Note that re-enabling aggregations isn't done in this function. 1625 */ 1626 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1627 struct ieee80211_sta *sta) 1628 { 1629 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1630 unsigned int wdg = 1631 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif); 1632 int i; 1633 struct iwl_trans_txq_scd_cfg cfg = { 1634 .sta_id = mvm_sta->deflink.sta_id, 1635 .frame_limit = IWL_FRAME_LIMIT, 1636 }; 1637 1638 /* Make sure reserved queue is still marked as such (if allocated) */ 1639 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1640 mvm->queue_info[mvm_sta->reserved_queue].status = 1641 IWL_MVM_QUEUE_RESERVED; 1642 1643 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1644 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1645 int txq_id = tid_data->txq_id; 1646 int ac; 1647 1648 if (txq_id == IWL_MVM_INVALID_QUEUE) 1649 continue; 1650 1651 ac = tid_to_mac80211_ac[i]; 1652 1653 if (iwl_mvm_has_new_tx_api(mvm)) { 1654 IWL_DEBUG_TX_QUEUES(mvm, 1655 "Re-mapping sta %d tid %d\n", 1656 mvm_sta->deflink.sta_id, i); 1657 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1658 mvm_sta->deflink.sta_id, 1659 i, wdg); 1660 /* 1661 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1662 * to try again later, we have no other good way of 1663 * failing here 1664 */ 1665 if (txq_id < 0) 1666 txq_id = IWL_MVM_INVALID_QUEUE; 1667 tid_data->txq_id = txq_id; 1668 1669 /* 1670 * Since we don't set the seq number after reset, and HW 1671 * sets it now, FW reset will cause the seq num to start 1672 * at 0 again, so driver will need to update it 1673 * internally as well, so it keeps in sync with real val 1674 */ 1675 tid_data->seq_number = 0; 1676 } else { 1677 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1678 1679 cfg.tid = i; 1680 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1681 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1682 txq_id == 1683 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1684 1685 IWL_DEBUG_TX_QUEUES(mvm, 1686 "Re-mapping sta %d tid %d to queue %d\n", 1687 mvm_sta->deflink.sta_id, i, 1688 txq_id); 1689 1690 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1691 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1692 } 1693 } 1694 } 1695 1696 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1697 struct iwl_mvm_int_sta *sta, 1698 const u8 *addr, 1699 u16 mac_id, u16 color) 1700 { 1701 struct iwl_mvm_add_sta_cmd cmd; 1702 int ret; 1703 u32 status = ADD_STA_SUCCESS; 1704 1705 lockdep_assert_held(&mvm->mutex); 1706 1707 memset(&cmd, 0, sizeof(cmd)); 1708 cmd.sta_id = sta->sta_id; 1709 1710 if (iwl_mvm_has_new_station_api(mvm->fw) && 1711 sta->type == IWL_STA_AUX_ACTIVITY) 1712 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1713 else 1714 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1715 color)); 1716 1717 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1718 cmd.station_type = sta->type; 1719 1720 if (!iwl_mvm_has_new_tx_api(mvm)) 1721 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1722 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1723 1724 if (addr) 1725 memcpy(cmd.addr, addr, ETH_ALEN); 1726 1727 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1728 iwl_mvm_add_sta_cmd_size(mvm), 1729 &cmd, &status); 1730 if (ret) 1731 return ret; 1732 1733 switch (status & IWL_ADD_STA_STATUS_MASK) { 1734 case ADD_STA_SUCCESS: 1735 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1736 return 0; 1737 default: 1738 ret = -EIO; 1739 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1740 status); 1741 break; 1742 } 1743 return ret; 1744 } 1745 1746 /* Initialize driver data of a new sta */ 1747 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1748 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1749 { 1750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1751 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1752 struct iwl_mvm_rxq_dup_data *dup_data; 1753 int i, ret = 0; 1754 1755 lockdep_assert_held(&mvm->mutex); 1756 1757 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1758 mvmvif->color); 1759 mvm_sta->vif = vif; 1760 1761 /* for MLD sta_id(s) should be allocated for each link before calling 1762 * this function 1763 */ 1764 if (!mvm->mld_api_is_used) { 1765 if (WARN_ON(sta_id == IWL_INVALID_STA)) 1766 return -EINVAL; 1767 1768 mvm_sta->deflink.sta_id = sta_id; 1769 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1770 1771 if (!mvm->trans->mac_cfg->gen2) 1772 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1773 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1774 else 1775 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1776 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1777 } 1778 1779 mvm_sta->tt_tx_protection = false; 1780 mvm_sta->sta_type = sta_type; 1781 1782 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1783 1784 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1785 /* 1786 * Mark all queues for this STA as unallocated and defer TX 1787 * frames until the queue is allocated 1788 */ 1789 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1790 } 1791 1792 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1793 struct iwl_mvm_txq *mvmtxq = 1794 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1795 1796 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1797 INIT_LIST_HEAD(&mvmtxq->list); 1798 atomic_set(&mvmtxq->tx_request, 0); 1799 } 1800 1801 if (iwl_mvm_has_new_rx_api(mvm)) { 1802 int q; 1803 1804 dup_data = kcalloc(mvm->trans->info.num_rxqs, 1805 sizeof(*dup_data), GFP_KERNEL); 1806 if (!dup_data) 1807 return -ENOMEM; 1808 /* 1809 * Initialize all the last_seq values to 0xffff which can never 1810 * compare equal to the frame's seq_ctrl in the check in 1811 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1812 * number and fragmented packets don't reach that function. 1813 * 1814 * This thus allows receiving a packet with seqno 0 and the 1815 * retry bit set as the very first packet on a new TID. 1816 */ 1817 for (q = 0; q < mvm->trans->info.num_rxqs; q++) 1818 memset(dup_data[q].last_seq, 0xff, 1819 sizeof(dup_data[q].last_seq)); 1820 mvm_sta->dup_data = dup_data; 1821 } 1822 1823 if (!iwl_mvm_has_new_tx_api(mvm)) { 1824 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1825 ieee80211_vif_type_p2p(vif)); 1826 if (ret) 1827 return ret; 1828 } 1829 1830 /* 1831 * if rs is registered with mac80211, then "add station" will be handled 1832 * via the corresponding ops, otherwise need to notify rate scaling here 1833 */ 1834 if (iwl_mvm_has_tlc_offload(mvm)) 1835 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1836 else 1837 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1838 1839 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1840 1841 /* MPDUs are counted only when EMLSR is possible */ 1842 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && 1843 !sta->tdls && ieee80211_vif_is_mld(vif)) { 1844 mvm_sta->mpdu_counters = 1845 kcalloc(mvm->trans->info.num_rxqs, 1846 sizeof(*mvm_sta->mpdu_counters), 1847 GFP_KERNEL); 1848 if (mvm_sta->mpdu_counters) 1849 for (int q = 0; q < mvm->trans->info.num_rxqs; q++) 1850 spin_lock_init(&mvm_sta->mpdu_counters[q].lock); 1851 } 1852 1853 return 0; 1854 } 1855 1856 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1857 struct ieee80211_vif *vif, 1858 struct ieee80211_sta *sta) 1859 { 1860 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1861 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1862 int ret, sta_id; 1863 bool sta_update = false; 1864 unsigned int sta_flags = 0; 1865 1866 lockdep_assert_held(&mvm->mutex); 1867 1868 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1869 sta_id = iwl_mvm_find_free_sta_id(mvm, 1870 ieee80211_vif_type_p2p(vif)); 1871 else 1872 sta_id = mvm_sta->deflink.sta_id; 1873 1874 if (sta_id == IWL_INVALID_STA) 1875 return -ENOSPC; 1876 1877 spin_lock_init(&mvm_sta->lock); 1878 1879 /* if this is a HW restart re-alloc existing queues */ 1880 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1881 struct iwl_mvm_int_sta tmp_sta = { 1882 .sta_id = sta_id, 1883 .type = mvm_sta->sta_type, 1884 }; 1885 1886 /* First add an empty station since allocating 1887 * a queue requires a valid station 1888 */ 1889 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1890 mvmvif->id, mvmvif->color); 1891 if (ret) 1892 goto err; 1893 1894 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1895 sta_update = true; 1896 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1897 goto update_fw; 1898 } 1899 1900 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1901 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1902 if (ret) 1903 goto err; 1904 1905 update_fw: 1906 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1907 if (ret) 1908 goto err; 1909 1910 if (vif->type == NL80211_IFTYPE_STATION) { 1911 if (!sta->tdls) { 1912 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_INVALID_STA); 1913 mvmvif->deflink.ap_sta_id = sta_id; 1914 } else { 1915 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_INVALID_STA); 1916 } 1917 } 1918 1919 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1920 1921 return 0; 1922 1923 err: 1924 return ret; 1925 } 1926 1927 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1928 bool drain) 1929 { 1930 struct iwl_mvm_add_sta_cmd cmd = {}; 1931 int ret; 1932 u32 status; 1933 1934 lockdep_assert_held(&mvm->mutex); 1935 1936 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1937 cmd.sta_id = mvmsta->deflink.sta_id; 1938 cmd.add_modify = STA_MODE_MODIFY; 1939 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1940 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1941 1942 status = ADD_STA_SUCCESS; 1943 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1944 iwl_mvm_add_sta_cmd_size(mvm), 1945 &cmd, &status); 1946 if (ret) 1947 return ret; 1948 1949 switch (status & IWL_ADD_STA_STATUS_MASK) { 1950 case ADD_STA_SUCCESS: 1951 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1952 mvmsta->deflink.sta_id); 1953 break; 1954 default: 1955 ret = -EIO; 1956 #if defined(__linux__) 1957 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1958 mvmsta->deflink.sta_id); 1959 #elif defined(__FreeBSD__) 1960 IWL_ERR(mvm, "Couldn't drain frames for staid %d, status %#x\n", 1961 mvmsta->deflink.sta_id, status); 1962 #endif 1963 break; 1964 } 1965 1966 return ret; 1967 } 1968 1969 /* 1970 * Remove a station from the FW table. Before sending the command to remove 1971 * the station validate that the station is indeed known to the driver (sanity 1972 * only). 1973 */ 1974 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1975 { 1976 struct ieee80211_sta *sta; 1977 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1978 .sta_id = sta_id, 1979 }; 1980 int ret; 1981 1982 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1983 lockdep_is_held(&mvm->mutex)); 1984 1985 /* Note: internal stations are marked as error values */ 1986 if (!sta) { 1987 IWL_ERR(mvm, "Invalid station id\n"); 1988 return -EINVAL; 1989 } 1990 1991 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1992 sizeof(rm_sta_cmd), &rm_sta_cmd); 1993 if (ret) { 1994 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1995 return ret; 1996 } 1997 1998 return 0; 1999 } 2000 2001 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 2002 struct ieee80211_vif *vif, 2003 struct ieee80211_sta *sta) 2004 { 2005 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2006 int i; 2007 2008 lockdep_assert_held(&mvm->mutex); 2009 2010 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2011 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 2012 continue; 2013 2014 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 2015 &mvm_sta->tid_data[i].txq_id, i); 2016 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 2017 } 2018 2019 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 2020 struct iwl_mvm_txq *mvmtxq = 2021 iwl_mvm_txq_from_mac80211(sta->txq[i]); 2022 2023 spin_lock_bh(&mvm->add_stream_lock); 2024 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 2025 list_del_init(&mvmtxq->list); 2026 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 2027 spin_unlock_bh(&mvm->add_stream_lock); 2028 } 2029 } 2030 2031 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 2032 struct iwl_mvm_sta *mvm_sta) 2033 { 2034 int i; 2035 2036 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2037 u16 txq_id; 2038 int ret; 2039 2040 spin_lock_bh(&mvm_sta->lock); 2041 txq_id = mvm_sta->tid_data[i].txq_id; 2042 spin_unlock_bh(&mvm_sta->lock); 2043 2044 if (txq_id == IWL_MVM_INVALID_QUEUE) 2045 continue; 2046 2047 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2048 if (ret) 2049 return ret; 2050 } 2051 2052 return 0; 2053 } 2054 2055 /* Execute the common part for both MLD and non-MLD modes. 2056 * Returns if we're done with removing the station, either 2057 * with error or success 2058 */ 2059 void iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2060 struct ieee80211_sta *sta, 2061 struct ieee80211_link_sta *link_sta) 2062 { 2063 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2064 struct iwl_mvm_vif_link_info *mvm_link = 2065 mvmvif->link[link_sta->link_id]; 2066 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2067 struct iwl_mvm_link_sta *mvm_link_sta; 2068 u8 sta_id; 2069 2070 lockdep_assert_held(&mvm->mutex); 2071 2072 mvm_link_sta = 2073 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2074 lockdep_is_held(&mvm->mutex)); 2075 sta_id = mvm_link_sta->sta_id; 2076 2077 if (vif->type == NL80211_IFTYPE_STATION && 2078 mvm_link->ap_sta_id == sta_id) { 2079 /* first remove remaining keys */ 2080 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 2081 link_sta->link_id); 2082 2083 mvm_link->ap_sta_id = IWL_INVALID_STA; 2084 } 2085 2086 /* 2087 * This shouldn't happen - the TDLS channel switch should be canceled 2088 * before the STA is removed. 2089 */ 2090 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2091 mvm->tdls_cs.peer.sta_id = IWL_INVALID_STA; 2092 cancel_delayed_work(&mvm->tdls_cs.dwork); 2093 } 2094 } 2095 2096 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2097 struct ieee80211_vif *vif, 2098 struct ieee80211_sta *sta) 2099 { 2100 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2101 int ret; 2102 2103 lockdep_assert_held(&mvm->mutex); 2104 2105 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2106 if (ret) 2107 return ret; 2108 2109 /* flush its queues here since we are freeing mvm_sta */ 2110 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id, 2111 mvm_sta->tfd_queue_msk); 2112 if (ret) 2113 return ret; 2114 if (iwl_mvm_has_new_tx_api(mvm)) { 2115 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2116 } else { 2117 u32 q_mask = mvm_sta->tfd_queue_msk; 2118 2119 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2120 q_mask); 2121 } 2122 if (ret) 2123 return ret; 2124 2125 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2126 2127 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2128 2129 /* If there is a TXQ still marked as reserved - free it */ 2130 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2131 u8 reserved_txq = mvm_sta->reserved_queue; 2132 enum iwl_mvm_queue_status *status; 2133 2134 /* 2135 * If no traffic has gone through the reserved TXQ - it 2136 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2137 * should be manually marked as free again 2138 */ 2139 status = &mvm->queue_info[reserved_txq].status; 2140 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2141 (*status != IWL_MVM_QUEUE_FREE), 2142 "sta_id %d reserved txq %d status %d", 2143 mvm_sta->deflink.sta_id, reserved_txq, *status)) 2144 return -EINVAL; 2145 2146 *status = IWL_MVM_QUEUE_FREE; 2147 } 2148 2149 iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink); 2150 2151 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2152 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2153 2154 return ret; 2155 } 2156 2157 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2158 struct ieee80211_vif *vif, 2159 u8 sta_id) 2160 { 2161 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2162 2163 lockdep_assert_held(&mvm->mutex); 2164 2165 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2166 return ret; 2167 } 2168 2169 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2170 struct iwl_mvm_int_sta *sta, 2171 u32 qmask, enum nl80211_iftype iftype, 2172 u8 type) 2173 { 2174 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2175 sta->sta_id == IWL_INVALID_STA) { 2176 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2177 if (WARN_ON_ONCE(sta->sta_id == IWL_INVALID_STA)) 2178 return -ENOSPC; 2179 } 2180 2181 sta->tfd_queue_msk = qmask; 2182 sta->type = type; 2183 2184 /* put a non-NULL value so iterating over the stations won't stop */ 2185 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2186 return 0; 2187 } 2188 2189 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2190 { 2191 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2192 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2193 sta->sta_id = IWL_INVALID_STA; 2194 } 2195 2196 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2197 u8 sta_id, u8 fifo) 2198 { 2199 unsigned int wdg_timeout = 2200 mvm->trans->mac_cfg->base->wd_timeout; 2201 struct iwl_trans_txq_scd_cfg cfg = { 2202 .fifo = fifo, 2203 .sta_id = sta_id, 2204 .tid = IWL_MAX_TID_COUNT, 2205 .aggregate = false, 2206 .frame_limit = IWL_FRAME_LIMIT, 2207 }; 2208 2209 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2210 2211 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2212 } 2213 2214 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2215 { 2216 unsigned int wdg_timeout = 2217 mvm->trans->mac_cfg->base->wd_timeout; 2218 2219 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2220 2221 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2222 wdg_timeout); 2223 } 2224 2225 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2226 int maccolor, u8 *addr, 2227 struct iwl_mvm_int_sta *sta, 2228 u16 *queue, int fifo) 2229 { 2230 int ret; 2231 2232 /* Map queue to fifo - needs to happen before adding station */ 2233 if (!iwl_mvm_has_new_tx_api(mvm)) 2234 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2235 2236 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2237 if (ret) { 2238 if (!iwl_mvm_has_new_tx_api(mvm)) 2239 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2240 IWL_MAX_TID_COUNT); 2241 return ret; 2242 } 2243 2244 /* 2245 * For 22000 firmware and on we cannot add queue to a station unknown 2246 * to firmware so enable queue here - after the station was added 2247 */ 2248 if (iwl_mvm_has_new_tx_api(mvm)) { 2249 int txq; 2250 2251 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2252 if (txq < 0) { 2253 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2254 return txq; 2255 } 2256 2257 *queue = txq; 2258 } 2259 2260 return 0; 2261 } 2262 2263 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2264 { 2265 int ret; 2266 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2267 BIT(mvm->aux_queue); 2268 2269 lockdep_assert_held(&mvm->mutex); 2270 2271 /* Allocate aux station and assign to it the aux queue */ 2272 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2273 NL80211_IFTYPE_UNSPECIFIED, 2274 IWL_STA_AUX_ACTIVITY); 2275 if (ret) 2276 return ret; 2277 2278 /* 2279 * In CDB NICs we need to specify which lmac to use for aux activity 2280 * using the mac_id argument place to send lmac_id to the function 2281 */ 2282 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2283 &mvm->aux_sta, &mvm->aux_queue, 2284 IWL_MVM_TX_FIFO_MCAST); 2285 if (ret) { 2286 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2287 return ret; 2288 } 2289 2290 return 0; 2291 } 2292 2293 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2294 { 2295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2296 2297 lockdep_assert_held(&mvm->mutex); 2298 2299 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2300 NULL, &mvm->snif_sta, 2301 &mvm->snif_queue, 2302 IWL_MVM_TX_FIFO_BE); 2303 } 2304 2305 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2306 { 2307 int ret; 2308 2309 lockdep_assert_held(&mvm->mutex); 2310 2311 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_INVALID_STA)) 2312 return -EINVAL; 2313 2314 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2315 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2316 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2317 if (ret) 2318 IWL_WARN(mvm, "Failed sending remove station\n"); 2319 2320 return ret; 2321 } 2322 2323 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2324 { 2325 int ret; 2326 2327 lockdep_assert_held(&mvm->mutex); 2328 2329 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_INVALID_STA)) 2330 return -EINVAL; 2331 2332 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2333 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2334 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2335 if (ret) 2336 IWL_WARN(mvm, "Failed sending remove station\n"); 2337 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2338 2339 return ret; 2340 } 2341 2342 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2343 { 2344 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2345 } 2346 2347 /* 2348 * Send the add station command for the vif's broadcast station. 2349 * Assumes that the station was already allocated. 2350 * 2351 * @mvm: the mvm component 2352 * @vif: the interface to which the broadcast station is added 2353 * @bsta: the broadcast station to add. 2354 */ 2355 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2356 { 2357 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2358 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2359 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2360 const u8 *baddr = _baddr; 2361 int queue; 2362 int ret; 2363 unsigned int wdg_timeout = 2364 iwl_mvm_get_wd_timeout(mvm, vif); 2365 struct iwl_trans_txq_scd_cfg cfg = { 2366 .fifo = IWL_MVM_TX_FIFO_VO, 2367 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2368 .tid = IWL_MAX_TID_COUNT, 2369 .aggregate = false, 2370 .frame_limit = IWL_FRAME_LIMIT, 2371 }; 2372 2373 lockdep_assert_held(&mvm->mutex); 2374 2375 if (!iwl_mvm_has_new_tx_api(mvm)) { 2376 if (vif->type == NL80211_IFTYPE_AP || 2377 vif->type == NL80211_IFTYPE_ADHOC) { 2378 queue = mvm->probe_queue; 2379 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2380 queue = mvm->p2p_dev_queue; 2381 } else { 2382 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2383 return -EINVAL; 2384 } 2385 2386 bsta->tfd_queue_msk |= BIT(queue); 2387 2388 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2389 } 2390 2391 if (vif->type == NL80211_IFTYPE_ADHOC) 2392 baddr = vif->bss_conf.bssid; 2393 2394 if (WARN_ON_ONCE(bsta->sta_id == IWL_INVALID_STA)) 2395 return -ENOSPC; 2396 2397 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2398 mvmvif->id, mvmvif->color); 2399 if (ret) 2400 return ret; 2401 2402 /* 2403 * For 22000 firmware and on we cannot add queue to a station unknown 2404 * to firmware so enable queue here - after the station was added 2405 */ 2406 if (iwl_mvm_has_new_tx_api(mvm)) { 2407 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2408 IWL_MAX_TID_COUNT, 2409 wdg_timeout); 2410 if (queue < 0) { 2411 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2412 return queue; 2413 } 2414 2415 if (vif->type == NL80211_IFTYPE_AP || 2416 vif->type == NL80211_IFTYPE_ADHOC) { 2417 /* for queue management */ 2418 mvm->probe_queue = queue; 2419 /* for use in TX */ 2420 mvmvif->deflink.mgmt_queue = queue; 2421 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2422 mvm->p2p_dev_queue = queue; 2423 } 2424 } else if (vif->type == NL80211_IFTYPE_AP || 2425 vif->type == NL80211_IFTYPE_ADHOC) { 2426 /* set it for use in TX */ 2427 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2428 } 2429 2430 return 0; 2431 } 2432 2433 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2434 struct ieee80211_vif *vif) 2435 { 2436 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2437 u16 *queueptr, queue; 2438 2439 lockdep_assert_held(&mvm->mutex); 2440 2441 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, 2442 mvmvif->deflink.bcast_sta.tfd_queue_msk); 2443 2444 switch (vif->type) { 2445 case NL80211_IFTYPE_AP: 2446 case NL80211_IFTYPE_ADHOC: 2447 queueptr = &mvm->probe_queue; 2448 break; 2449 case NL80211_IFTYPE_P2P_DEVICE: 2450 queueptr = &mvm->p2p_dev_queue; 2451 break; 2452 default: 2453 WARN(1, "Can't free bcast queue on vif type %d\n", 2454 vif->type); 2455 return; 2456 } 2457 2458 queue = *queueptr; 2459 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2460 queueptr, IWL_MAX_TID_COUNT); 2461 2462 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2463 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2464 2465 if (iwl_mvm_has_new_tx_api(mvm)) 2466 return; 2467 2468 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2469 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2470 } 2471 2472 /* Send the FW a request to remove the station from its internal data 2473 * structures, but DO NOT remove the entry from the local data structures. */ 2474 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2475 { 2476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2477 int ret; 2478 2479 lockdep_assert_held(&mvm->mutex); 2480 2481 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2482 2483 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2484 if (ret) 2485 IWL_WARN(mvm, "Failed sending remove station\n"); 2486 return ret; 2487 } 2488 2489 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2490 { 2491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2492 2493 lockdep_assert_held(&mvm->mutex); 2494 2495 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2496 ieee80211_vif_type_p2p(vif), 2497 IWL_STA_GENERAL_PURPOSE); 2498 } 2499 2500 /* Allocate a new station entry for the broadcast station to the given vif, 2501 * and send it to the FW. 2502 * Note that each P2P mac should have its own broadcast station. 2503 * 2504 * @mvm: the mvm component 2505 * @vif: the interface to which the broadcast station is added 2506 * @bsta: the broadcast station to add. */ 2507 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2508 { 2509 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2510 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2511 int ret; 2512 2513 lockdep_assert_held(&mvm->mutex); 2514 2515 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2516 if (ret) 2517 return ret; 2518 2519 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2520 2521 if (ret) 2522 iwl_mvm_dealloc_int_sta(mvm, bsta); 2523 2524 return ret; 2525 } 2526 2527 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2528 { 2529 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2530 2531 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2532 } 2533 2534 /* 2535 * Send the FW a request to remove the station from its internal data 2536 * structures, and in addition remove it from the local data structure. 2537 */ 2538 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2539 { 2540 int ret; 2541 2542 lockdep_assert_held(&mvm->mutex); 2543 2544 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2545 2546 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2547 2548 return ret; 2549 } 2550 2551 /* 2552 * Allocate a new station entry for the multicast station to the given vif, 2553 * and send it to the FW. 2554 * Note that each AP/GO mac should have its own multicast station. 2555 * 2556 * @mvm: the mvm component 2557 * @vif: the interface to which the multicast station is added 2558 */ 2559 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2560 { 2561 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2562 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2563 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2564 const u8 *maddr = _maddr; 2565 struct iwl_trans_txq_scd_cfg cfg = { 2566 .fifo = vif->type == NL80211_IFTYPE_AP ? 2567 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2568 .sta_id = msta->sta_id, 2569 .tid = 0, 2570 .aggregate = false, 2571 .frame_limit = IWL_FRAME_LIMIT, 2572 }; 2573 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif); 2574 int ret; 2575 2576 lockdep_assert_held(&mvm->mutex); 2577 2578 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2579 vif->type != NL80211_IFTYPE_ADHOC)) 2580 return -EOPNOTSUPP; 2581 2582 /* 2583 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2584 * invalid, so make sure we use the queue we want. 2585 * Note that this is done here as we want to avoid making DQA 2586 * changes in mac80211 layer. 2587 */ 2588 if (vif->type == NL80211_IFTYPE_ADHOC) 2589 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2590 2591 /* 2592 * While in previous FWs we had to exclude cab queue from TFD queue 2593 * mask, now it is needed as any other queue. 2594 */ 2595 if (!iwl_mvm_has_new_tx_api(mvm) && 2596 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2597 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2598 &cfg, 2599 timeout); 2600 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2601 } 2602 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2603 mvmvif->id, mvmvif->color); 2604 if (ret) 2605 goto err; 2606 2607 /* 2608 * Enable cab queue after the ADD_STA command is sent. 2609 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2610 * command with unknown station id, and for FW that doesn't support 2611 * station API since the cab queue is not included in the 2612 * tfd_queue_mask. 2613 */ 2614 if (iwl_mvm_has_new_tx_api(mvm)) { 2615 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2616 0, timeout); 2617 if (queue < 0) { 2618 ret = queue; 2619 goto err; 2620 } 2621 mvmvif->deflink.cab_queue = queue; 2622 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2623 IWL_UCODE_TLV_API_STA_TYPE)) 2624 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2625 &cfg, 2626 timeout); 2627 2628 return 0; 2629 err: 2630 iwl_mvm_dealloc_int_sta(mvm, msta); 2631 return ret; 2632 } 2633 2634 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2635 struct ieee80211_key_conf *keyconf, 2636 bool mcast) 2637 { 2638 union { 2639 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2640 struct iwl_mvm_add_sta_key_cmd cmd; 2641 } u = {}; 2642 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2643 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2644 __le16 key_flags; 2645 int ret, size; 2646 u32 status; 2647 2648 /* This is a valid situation for GTK removal */ 2649 if (sta_id == IWL_INVALID_STA) 2650 return 0; 2651 2652 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2653 STA_KEY_FLG_KEYID_MSK); 2654 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2655 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2656 2657 if (mcast) 2658 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2659 2660 /* 2661 * The fields assigned here are in the same location at the start 2662 * of the command, so we can do this union trick. 2663 */ 2664 u.cmd.common.key_flags = key_flags; 2665 u.cmd.common.key_offset = keyconf->hw_key_idx; 2666 u.cmd.common.sta_id = sta_id; 2667 2668 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2669 2670 status = ADD_STA_SUCCESS; 2671 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2672 &status); 2673 2674 switch (status) { 2675 case ADD_STA_SUCCESS: 2676 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2677 break; 2678 default: 2679 ret = -EIO; 2680 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2681 break; 2682 } 2683 2684 return ret; 2685 } 2686 2687 /* 2688 * Send the FW a request to remove the station from its internal data 2689 * structures, and in addition remove it from the local data structure. 2690 */ 2691 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2692 { 2693 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2694 int ret; 2695 2696 lockdep_assert_held(&mvm->mutex); 2697 2698 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id, 2699 mvmvif->deflink.mcast_sta.tfd_queue_msk); 2700 2701 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2702 &mvmvif->deflink.cab_queue, 0); 2703 2704 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2705 if (ret) 2706 IWL_WARN(mvm, "Failed sending remove station\n"); 2707 2708 return ret; 2709 } 2710 2711 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2712 { 2713 struct iwl_mvm_delba_data notif = { 2714 .baid = baid, 2715 }; 2716 2717 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2718 ¬if, sizeof(notif)); 2719 }; 2720 2721 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2722 struct iwl_mvm_baid_data *data) 2723 { 2724 int i; 2725 2726 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2727 2728 for (i = 0; i < mvm->trans->info.num_rxqs; i++) { 2729 int j; 2730 struct iwl_mvm_reorder_buffer *reorder_buf = 2731 &data->reorder_buf[i]; 2732 struct iwl_mvm_reorder_buf_entry *entries = 2733 &data->entries[i * data->entries_per_queue]; 2734 2735 spin_lock_bh(&reorder_buf->lock); 2736 if (likely(!reorder_buf->num_stored)) { 2737 spin_unlock_bh(&reorder_buf->lock); 2738 continue; 2739 } 2740 2741 /* 2742 * This shouldn't happen in regular DELBA since the internal 2743 * delBA notification should trigger a release of all frames in 2744 * the reorder buffer. 2745 */ 2746 WARN_ON(1); 2747 2748 for (j = 0; j < data->buf_size; j++) 2749 __skb_queue_purge(&entries[j].frames); 2750 2751 spin_unlock_bh(&reorder_buf->lock); 2752 } 2753 } 2754 2755 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2756 struct iwl_mvm_baid_data *data, 2757 u16 ssn) 2758 { 2759 int i; 2760 2761 for (i = 0; i < mvm->trans->info.num_rxqs; i++) { 2762 struct iwl_mvm_reorder_buffer *reorder_buf = 2763 &data->reorder_buf[i]; 2764 struct iwl_mvm_reorder_buf_entry *entries = 2765 &data->entries[i * data->entries_per_queue]; 2766 int j; 2767 2768 reorder_buf->num_stored = 0; 2769 reorder_buf->head_sn = ssn; 2770 spin_lock_init(&reorder_buf->lock); 2771 reorder_buf->queue = i; 2772 reorder_buf->valid = false; 2773 for (j = 0; j < data->buf_size; j++) 2774 __skb_queue_head_init(&entries[j].frames); 2775 } 2776 } 2777 2778 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2779 struct ieee80211_sta *sta, 2780 bool start, int tid, u16 ssn, 2781 u16 buf_size) 2782 { 2783 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2784 struct iwl_mvm_add_sta_cmd cmd = { 2785 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2786 .sta_id = mvm_sta->deflink.sta_id, 2787 .add_modify = STA_MODE_MODIFY, 2788 }; 2789 u32 status; 2790 int ret; 2791 2792 if (start) { 2793 cmd.add_immediate_ba_tid = tid; 2794 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2795 cmd.rx_ba_window = cpu_to_le16(buf_size); 2796 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2797 } else { 2798 cmd.remove_immediate_ba_tid = tid; 2799 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2800 } 2801 2802 status = ADD_STA_SUCCESS; 2803 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2804 iwl_mvm_add_sta_cmd_size(mvm), 2805 &cmd, &status); 2806 if (ret) 2807 return ret; 2808 2809 switch (status & IWL_ADD_STA_STATUS_MASK) { 2810 case ADD_STA_SUCCESS: 2811 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2812 start ? "start" : "stopp"); 2813 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2814 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2815 return -EINVAL; 2816 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2817 case ADD_STA_IMMEDIATE_BA_FAILURE: 2818 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2819 return -ENOSPC; 2820 default: 2821 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2822 start ? "start" : "stopp", status); 2823 return -EIO; 2824 } 2825 } 2826 2827 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2828 struct ieee80211_sta *sta, 2829 bool start, int tid, u16 ssn, 2830 u16 buf_size, int baid) 2831 { 2832 struct iwl_rx_baid_cfg_cmd cmd = { 2833 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2834 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2835 }; 2836 struct iwl_host_cmd hcmd = { 2837 .id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD), 2838 .flags = CMD_SEND_IN_RFKILL, 2839 .len[0] = sizeof(cmd), 2840 .data[0] = &cmd, 2841 }; 2842 int ret; 2843 2844 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2845 2846 if (start) { 2847 cmd.alloc.sta_id_mask = 2848 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2849 cmd.alloc.tid = tid; 2850 cmd.alloc.ssn = cpu_to_le16(ssn); 2851 cmd.alloc.win_size = cpu_to_le16(buf_size); 2852 baid = -EIO; 2853 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) { 2854 cmd.remove_v1.baid = cpu_to_le32(baid); 2855 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2856 } else { 2857 cmd.remove.sta_id_mask = 2858 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2859 cmd.remove.tid = cpu_to_le32(tid); 2860 } 2861 2862 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid); 2863 if (ret) 2864 return ret; 2865 2866 if (!start) { 2867 /* ignore firmware baid on remove */ 2868 baid = 0; 2869 } 2870 2871 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2872 start ? "start" : "stopp"); 2873 2874 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2875 return -EINVAL; 2876 2877 return baid; 2878 } 2879 2880 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2881 bool start, int tid, u16 ssn, u16 buf_size, 2882 int baid) 2883 { 2884 if (fw_has_capa(&mvm->fw->ucode_capa, 2885 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2886 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2887 tid, ssn, buf_size, baid); 2888 2889 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2890 tid, ssn, buf_size); 2891 } 2892 2893 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2894 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2895 { 2896 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2897 struct iwl_mvm_baid_data *baid_data = NULL; 2898 int ret, baid; 2899 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2900 IWL_MAX_BAID_OLD; 2901 2902 lockdep_assert_held(&mvm->mutex); 2903 2904 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2905 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2906 return -ENOSPC; 2907 } 2908 2909 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2910 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2911 2912 /* sparse doesn't like the __align() so don't check */ 2913 #ifndef __CHECKER__ 2914 /* 2915 * The division below will be OK if either the cache line size 2916 * can be divided by the entry size (ALIGN will round up) or if 2917 * the entry size can be divided by the cache line size, in 2918 * which case the ALIGN() will do nothing. 2919 */ 2920 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2921 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2922 #endif 2923 2924 /* 2925 * Upward align the reorder buffer size to fill an entire cache 2926 * line for each queue, to avoid sharing cache lines between 2927 * different queues. 2928 */ 2929 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2930 2931 /* 2932 * Allocate here so if allocation fails we can bail out early 2933 * before starting the BA session in the firmware 2934 */ 2935 baid_data = kzalloc(sizeof(*baid_data) + 2936 mvm->trans->info.num_rxqs * 2937 reorder_buf_size, 2938 GFP_KERNEL); 2939 if (!baid_data) 2940 return -ENOMEM; 2941 2942 /* 2943 * This division is why we need the above BUILD_BUG_ON(), 2944 * if that doesn't hold then this will not be right. 2945 */ 2946 baid_data->entries_per_queue = 2947 reorder_buf_size / sizeof(baid_data->entries[0]); 2948 } 2949 2950 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2951 baid = mvm_sta->tid_to_baid[tid]; 2952 } else { 2953 /* we don't really need it in this case */ 2954 baid = -1; 2955 } 2956 2957 /* Don't send command to remove (start=0) BAID during restart */ 2958 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2959 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2960 baid); 2961 2962 if (baid < 0) { 2963 ret = baid; 2964 goto out_free; 2965 } 2966 2967 if (start) { 2968 mvm->rx_ba_sessions++; 2969 2970 if (!iwl_mvm_has_new_rx_api(mvm)) 2971 return 0; 2972 2973 baid_data->baid = baid; 2974 baid_data->timeout = timeout; 2975 baid_data->last_rx = jiffies; 2976 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2977 timer_setup(&baid_data->session_timer, 2978 iwl_mvm_rx_agg_session_expired, 0); 2979 baid_data->mvm = mvm; 2980 baid_data->tid = tid; 2981 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2982 baid_data->buf_size = buf_size; 2983 2984 mvm_sta->tid_to_baid[tid] = baid; 2985 if (timeout) 2986 mod_timer(&baid_data->session_timer, 2987 TU_TO_EXP_TIME(timeout * 2)); 2988 2989 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn); 2990 /* 2991 * protect the BA data with RCU to cover a case where our 2992 * internal RX sync mechanism will timeout (not that it's 2993 * supposed to happen) and we will free the session data while 2994 * RX is being processed in parallel 2995 */ 2996 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2997 mvm_sta->deflink.sta_id, tid, baid); 2998 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2999 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 3000 } else { 3001 baid = mvm_sta->tid_to_baid[tid]; 3002 3003 if (mvm->rx_ba_sessions > 0) 3004 /* check that restart flow didn't zero the counter */ 3005 mvm->rx_ba_sessions--; 3006 if (!iwl_mvm_has_new_rx_api(mvm)) 3007 return 0; 3008 3009 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 3010 return -EINVAL; 3011 3012 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 3013 if (WARN_ON(!baid_data)) 3014 return -EINVAL; 3015 3016 /* synchronize all rx queues so we can safely delete */ 3017 iwl_mvm_free_reorder(mvm, baid_data); 3018 timer_shutdown_sync(&baid_data->session_timer); 3019 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 3020 kfree_rcu(baid_data, rcu_head); 3021 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 3022 } 3023 return 0; 3024 3025 out_free: 3026 kfree(baid_data); 3027 return ret; 3028 } 3029 3030 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3031 int tid, u8 queue, bool start) 3032 { 3033 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3034 struct iwl_mvm_add_sta_cmd cmd = {}; 3035 int ret; 3036 u32 status; 3037 3038 lockdep_assert_held(&mvm->mutex); 3039 3040 if (start) { 3041 mvm_sta->tfd_queue_msk |= BIT(queue); 3042 mvm_sta->tid_disable_agg &= ~BIT(tid); 3043 } else { 3044 /* In DQA-mode the queue isn't removed on agg termination */ 3045 mvm_sta->tid_disable_agg |= BIT(tid); 3046 } 3047 3048 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3049 cmd.sta_id = mvm_sta->deflink.sta_id; 3050 cmd.add_modify = STA_MODE_MODIFY; 3051 if (!iwl_mvm_has_new_tx_api(mvm)) 3052 cmd.modify_mask = STA_MODIFY_QUEUES; 3053 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3054 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3055 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3056 3057 status = ADD_STA_SUCCESS; 3058 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3059 iwl_mvm_add_sta_cmd_size(mvm), 3060 &cmd, &status); 3061 if (ret) 3062 return ret; 3063 3064 switch (status & IWL_ADD_STA_STATUS_MASK) { 3065 case ADD_STA_SUCCESS: 3066 break; 3067 default: 3068 ret = -EIO; 3069 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3070 start ? "start" : "stopp", status); 3071 break; 3072 } 3073 3074 return ret; 3075 } 3076 3077 const u8 tid_to_mac80211_ac[] = { 3078 IEEE80211_AC_BE, 3079 IEEE80211_AC_BK, 3080 IEEE80211_AC_BK, 3081 IEEE80211_AC_BE, 3082 IEEE80211_AC_VI, 3083 IEEE80211_AC_VI, 3084 IEEE80211_AC_VO, 3085 IEEE80211_AC_VO, 3086 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3087 }; 3088 3089 static const u8 tid_to_ucode_ac[] = { 3090 AC_BE, 3091 AC_BK, 3092 AC_BK, 3093 AC_BE, 3094 AC_VI, 3095 AC_VI, 3096 AC_VO, 3097 AC_VO, 3098 }; 3099 3100 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3101 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3102 { 3103 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3104 struct iwl_mvm_tid_data *tid_data; 3105 u16 normalized_ssn; 3106 u16 txq_id; 3107 int ret; 3108 3109 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3110 return -EINVAL; 3111 3112 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3113 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3114 IWL_ERR(mvm, 3115 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3116 mvmsta->tid_data[tid].state); 3117 return -ENXIO; 3118 } 3119 3120 lockdep_assert_held(&mvm->mutex); 3121 3122 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3123 iwl_mvm_has_new_tx_api(mvm)) { 3124 u8 ac = tid_to_mac80211_ac[tid]; 3125 3126 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3127 if (ret) 3128 return ret; 3129 } 3130 3131 spin_lock_bh(&mvmsta->lock); 3132 3133 /* 3134 * Note the possible cases: 3135 * 1. An enabled TXQ - TXQ needs to become agg'ed 3136 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3137 * it as reserved 3138 */ 3139 txq_id = mvmsta->tid_data[tid].txq_id; 3140 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3141 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3142 IWL_MVM_DQA_MIN_DATA_QUEUE, 3143 IWL_MVM_DQA_MAX_DATA_QUEUE); 3144 if (ret < 0) { 3145 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3146 goto out; 3147 } 3148 3149 txq_id = ret; 3150 3151 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3152 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3153 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3154 ret = -ENXIO; 3155 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3156 tid, IWL_MAX_HW_QUEUES - 1); 3157 goto out; 3158 3159 } else if (unlikely(mvm->queue_info[txq_id].status == 3160 IWL_MVM_QUEUE_SHARED)) { 3161 ret = -ENXIO; 3162 IWL_DEBUG_TX_QUEUES(mvm, 3163 "Can't start tid %d agg on shared queue!\n", 3164 tid); 3165 goto out; 3166 } 3167 3168 IWL_DEBUG_TX_QUEUES(mvm, 3169 "AGG for tid %d will be on queue #%d\n", 3170 tid, txq_id); 3171 3172 tid_data = &mvmsta->tid_data[tid]; 3173 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3174 tid_data->txq_id = txq_id; 3175 *ssn = tid_data->ssn; 3176 3177 IWL_DEBUG_TX_QUEUES(mvm, 3178 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3179 mvmsta->deflink.sta_id, tid, txq_id, 3180 tid_data->ssn, 3181 tid_data->next_reclaimed); 3182 3183 /* 3184 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3185 * to align the wrap around of ssn so we compare relevant values. 3186 */ 3187 normalized_ssn = tid_data->ssn; 3188 if (mvm->trans->mac_cfg->gen2) 3189 normalized_ssn &= 0xff; 3190 3191 if (normalized_ssn == tid_data->next_reclaimed) { 3192 tid_data->state = IWL_AGG_STARTING; 3193 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3194 } else { 3195 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3196 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3197 } 3198 3199 out: 3200 spin_unlock_bh(&mvmsta->lock); 3201 3202 return ret; 3203 } 3204 3205 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3206 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3207 bool amsdu) 3208 { 3209 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3210 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3211 unsigned int wdg_timeout = 3212 iwl_mvm_get_wd_timeout(mvm, vif); 3213 int queue, ret; 3214 bool alloc_queue = true; 3215 enum iwl_mvm_queue_status queue_status; 3216 u16 ssn; 3217 3218 struct iwl_trans_txq_scd_cfg cfg = { 3219 .sta_id = mvmsta->deflink.sta_id, 3220 .tid = tid, 3221 .frame_limit = buf_size, 3222 .aggregate = true, 3223 }; 3224 3225 /* 3226 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3227 * manager, so this function should never be called in this case. 3228 */ 3229 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3230 return -EINVAL; 3231 3232 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3233 != IWL_MAX_TID_COUNT); 3234 3235 spin_lock_bh(&mvmsta->lock); 3236 ssn = tid_data->ssn; 3237 queue = tid_data->txq_id; 3238 tid_data->state = IWL_AGG_ON; 3239 mvmsta->agg_tids |= BIT(tid); 3240 tid_data->ssn = 0xffff; 3241 tid_data->amsdu_in_ampdu_allowed = amsdu; 3242 spin_unlock_bh(&mvmsta->lock); 3243 3244 if (iwl_mvm_has_new_tx_api(mvm)) { 3245 /* 3246 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3247 * would have failed, so if we are here there is no need to 3248 * allocate a queue. 3249 * However, if aggregation size is different than the default 3250 * size, the scheduler should be reconfigured. 3251 * We cannot do this with the new TX API, so return unsupported 3252 * for now, until it will be offloaded to firmware.. 3253 * Note that if SCD default value changes - this condition 3254 * should be updated as well. 3255 */ 3256 if (buf_size < IWL_FRAME_LIMIT) 3257 return -EOPNOTSUPP; 3258 3259 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3260 if (ret) 3261 return -EIO; 3262 goto out; 3263 } 3264 3265 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3266 3267 queue_status = mvm->queue_info[queue].status; 3268 3269 /* Maybe there is no need to even alloc a queue... */ 3270 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3271 alloc_queue = false; 3272 3273 /* 3274 * Only reconfig the SCD for the queue if the window size has 3275 * changed from current (become smaller) 3276 */ 3277 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3278 /* 3279 * If reconfiguring an existing queue, it first must be 3280 * drained 3281 */ 3282 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3283 BIT(queue)); 3284 if (ret) { 3285 IWL_ERR(mvm, 3286 "Error draining queue before reconfig\n"); 3287 return ret; 3288 } 3289 3290 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3291 mvmsta->deflink.sta_id, tid, 3292 buf_size, ssn); 3293 if (ret) { 3294 IWL_ERR(mvm, 3295 "Error reconfiguring TXQ #%d\n", queue); 3296 return ret; 3297 } 3298 } 3299 3300 if (alloc_queue) 3301 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3302 &cfg, wdg_timeout); 3303 3304 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3305 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3306 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3307 if (ret) 3308 return -EIO; 3309 } 3310 3311 /* No need to mark as reserved */ 3312 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3313 3314 out: 3315 /* 3316 * Even though in theory the peer could have different 3317 * aggregation reorder buffer sizes for different sessions, 3318 * our ucode doesn't allow for that and has a global limit 3319 * for each station. Therefore, use the minimum of all the 3320 * aggregation sessions and our default value. 3321 */ 3322 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3323 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3324 buf_size); 3325 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3326 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3327 3328 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3329 sta->addr, tid); 3330 3331 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3332 } 3333 3334 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3335 struct iwl_mvm_sta *mvmsta, 3336 struct iwl_mvm_tid_data *tid_data) 3337 { 3338 u16 txq_id = tid_data->txq_id; 3339 3340 lockdep_assert_held(&mvm->mutex); 3341 3342 if (iwl_mvm_has_new_tx_api(mvm)) 3343 return; 3344 3345 /* 3346 * The TXQ is marked as reserved only if no traffic came through yet 3347 * This means no traffic has been sent on this TID (agg'd or not), so 3348 * we no longer have use for the queue. Since it hasn't even been 3349 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3350 * free. 3351 */ 3352 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3353 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3354 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3355 } 3356 } 3357 3358 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3359 struct ieee80211_sta *sta, u16 tid) 3360 { 3361 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3362 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3363 u16 txq_id; 3364 int err; 3365 3366 /* 3367 * If mac80211 is cleaning its state, then say that we finished since 3368 * our state has been cleared anyway. 3369 */ 3370 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3371 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3372 return 0; 3373 } 3374 3375 spin_lock_bh(&mvmsta->lock); 3376 3377 txq_id = tid_data->txq_id; 3378 3379 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3380 mvmsta->deflink.sta_id, tid, txq_id, 3381 tid_data->state); 3382 3383 mvmsta->agg_tids &= ~BIT(tid); 3384 3385 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3386 3387 switch (tid_data->state) { 3388 case IWL_AGG_ON: 3389 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3390 3391 IWL_DEBUG_TX_QUEUES(mvm, 3392 "ssn = %d, next_recl = %d\n", 3393 tid_data->ssn, tid_data->next_reclaimed); 3394 3395 tid_data->ssn = 0xffff; 3396 tid_data->state = IWL_AGG_OFF; 3397 spin_unlock_bh(&mvmsta->lock); 3398 3399 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3400 3401 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3402 return 0; 3403 case IWL_AGG_STARTING: 3404 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3405 /* 3406 * The agg session has been stopped before it was set up. This 3407 * can happen when the AddBA timer times out for example. 3408 */ 3409 3410 /* No barriers since we are under mutex */ 3411 lockdep_assert_held(&mvm->mutex); 3412 3413 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3414 tid_data->state = IWL_AGG_OFF; 3415 err = 0; 3416 break; 3417 default: 3418 IWL_ERR(mvm, 3419 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3420 mvmsta->deflink.sta_id, tid, tid_data->state); 3421 IWL_ERR(mvm, 3422 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3423 err = -EINVAL; 3424 } 3425 3426 spin_unlock_bh(&mvmsta->lock); 3427 3428 return err; 3429 } 3430 3431 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3432 struct ieee80211_sta *sta, u16 tid) 3433 { 3434 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3435 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3436 u16 txq_id; 3437 enum iwl_mvm_agg_state old_state; 3438 3439 /* 3440 * First set the agg state to OFF to avoid calling 3441 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3442 */ 3443 spin_lock_bh(&mvmsta->lock); 3444 txq_id = tid_data->txq_id; 3445 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3446 mvmsta->deflink.sta_id, tid, txq_id, 3447 tid_data->state); 3448 old_state = tid_data->state; 3449 tid_data->state = IWL_AGG_OFF; 3450 mvmsta->agg_tids &= ~BIT(tid); 3451 spin_unlock_bh(&mvmsta->lock); 3452 3453 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3454 3455 if (old_state >= IWL_AGG_ON) { 3456 iwl_mvm_drain_sta(mvm, mvmsta, true); 3457 3458 if (iwl_mvm_has_new_tx_api(mvm)) { 3459 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3460 BIT(tid))) 3461 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3462 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3463 } else { 3464 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3465 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3466 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3467 } 3468 3469 iwl_mvm_drain_sta(mvm, mvmsta, false); 3470 3471 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3472 } 3473 3474 return 0; 3475 } 3476 3477 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3478 { 3479 int i, max = -1, max_offs = -1; 3480 3481 lockdep_assert_held(&mvm->mutex); 3482 3483 /* Pick the unused key offset with the highest 'deleted' 3484 * counter. Every time a key is deleted, all the counters 3485 * are incremented and the one that was just deleted is 3486 * reset to zero. Thus, the highest counter is the one 3487 * that was deleted longest ago. Pick that one. 3488 */ 3489 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3490 if (test_bit(i, mvm->fw_key_table)) 3491 continue; 3492 if (mvm->fw_key_deleted[i] > max) { 3493 max = mvm->fw_key_deleted[i]; 3494 max_offs = i; 3495 } 3496 } 3497 3498 if (max_offs < 0) 3499 return STA_KEY_IDX_INVALID; 3500 3501 return max_offs; 3502 } 3503 3504 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3505 struct ieee80211_vif *vif, 3506 struct ieee80211_sta *sta) 3507 { 3508 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3509 3510 if (sta) 3511 return iwl_mvm_sta_from_mac80211(sta); 3512 3513 /* 3514 * The device expects GTKs for station interfaces to be 3515 * installed as GTKs for the AP station. If we have no 3516 * station ID, then use AP's station ID. 3517 */ 3518 if (vif->type == NL80211_IFTYPE_STATION && 3519 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) { 3520 u8 sta_id = mvmvif->deflink.ap_sta_id; 3521 3522 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3523 lockdep_is_held(&mvm->mutex)); 3524 3525 /* 3526 * It is possible that the 'sta' parameter is NULL, 3527 * for example when a GTK is removed - the sta_id will then 3528 * be the AP ID, and no station was passed by mac80211. 3529 */ 3530 if (IS_ERR_OR_NULL(sta)) 3531 return NULL; 3532 3533 return iwl_mvm_sta_from_mac80211(sta); 3534 } 3535 3536 return NULL; 3537 } 3538 3539 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3540 { 3541 int i; 3542 3543 for (i = len - 1; i >= 0; i--) { 3544 if (pn1[i] > pn2[i]) 3545 return 1; 3546 if (pn1[i] < pn2[i]) 3547 return -1; 3548 } 3549 3550 return 0; 3551 } 3552 3553 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3554 u32 sta_id, 3555 struct ieee80211_key_conf *key, bool mcast, 3556 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3557 u8 key_offset, bool mfp) 3558 { 3559 union { 3560 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3561 struct iwl_mvm_add_sta_key_cmd cmd; 3562 } u = {}; 3563 __le16 key_flags; 3564 int ret; 3565 u32 status; 3566 u16 keyidx; 3567 u64 pn = 0; 3568 int i, size; 3569 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3570 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3571 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3572 new_api ? 2 : 1); 3573 3574 if (sta_id == IWL_INVALID_STA) 3575 return -EINVAL; 3576 3577 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3578 STA_KEY_FLG_KEYID_MSK; 3579 key_flags = cpu_to_le16(keyidx); 3580 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3581 3582 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU) 3583 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP); 3584 3585 switch (key->cipher) { 3586 case WLAN_CIPHER_SUITE_TKIP: 3587 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3588 if (api_ver >= 2) { 3589 memcpy((void *)&u.cmd.tx_mic_key, 3590 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3591 IWL_MIC_KEY_SIZE); 3592 3593 memcpy((void *)&u.cmd.rx_mic_key, 3594 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3595 IWL_MIC_KEY_SIZE); 3596 pn = atomic64_read(&key->tx_pn); 3597 3598 } else { 3599 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3600 for (i = 0; i < 5; i++) 3601 u.cmd_v1.tkip_rx_ttak[i] = 3602 cpu_to_le16(tkip_p1k[i]); 3603 } 3604 memcpy(u.cmd.common.key, key->key, key->keylen); 3605 break; 3606 case WLAN_CIPHER_SUITE_CCMP: 3607 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3608 memcpy(u.cmd.common.key, key->key, key->keylen); 3609 if (api_ver >= 2) 3610 pn = atomic64_read(&key->tx_pn); 3611 break; 3612 case WLAN_CIPHER_SUITE_WEP104: 3613 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3614 fallthrough; 3615 case WLAN_CIPHER_SUITE_WEP40: 3616 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3617 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3618 break; 3619 case WLAN_CIPHER_SUITE_GCMP_256: 3620 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3621 fallthrough; 3622 case WLAN_CIPHER_SUITE_GCMP: 3623 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3624 memcpy(u.cmd.common.key, key->key, key->keylen); 3625 if (api_ver >= 2) 3626 pn = atomic64_read(&key->tx_pn); 3627 break; 3628 default: 3629 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3630 memcpy(u.cmd.common.key, key->key, key->keylen); 3631 } 3632 3633 if (mcast) 3634 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3635 if (mfp) 3636 key_flags |= cpu_to_le16(STA_KEY_MFP); 3637 3638 u.cmd.common.key_offset = key_offset; 3639 u.cmd.common.key_flags = key_flags; 3640 u.cmd.common.sta_id = sta_id; 3641 3642 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3643 i = 0; 3644 else 3645 i = -1; 3646 3647 for (; i < IEEE80211_NUM_TIDS; i++) { 3648 struct ieee80211_key_seq seq = {}; 3649 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3650 int rx_pn_len = 8; 3651 /* there's a hole at 2/3 in FW format depending on version */ 3652 int hole = api_ver >= 3 ? 0 : 2; 3653 3654 ieee80211_get_key_rx_seq(key, i, &seq); 3655 3656 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3657 rx_pn[0] = seq.tkip.iv16; 3658 rx_pn[1] = seq.tkip.iv16 >> 8; 3659 rx_pn[2 + hole] = seq.tkip.iv32; 3660 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3661 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3662 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3663 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3664 rx_pn = seq.hw.seq; 3665 rx_pn_len = seq.hw.seq_len; 3666 } else { 3667 rx_pn[0] = seq.ccmp.pn[0]; 3668 rx_pn[1] = seq.ccmp.pn[1]; 3669 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3670 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3671 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3672 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3673 } 3674 3675 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3676 rx_pn_len) > 0) 3677 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3678 rx_pn_len); 3679 } 3680 3681 if (api_ver >= 2) { 3682 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3683 size = sizeof(u.cmd); 3684 } else { 3685 size = sizeof(u.cmd_v1); 3686 } 3687 3688 status = ADD_STA_SUCCESS; 3689 if (cmd_flags & CMD_ASYNC) 3690 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3691 &u.cmd); 3692 else 3693 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3694 &u.cmd, &status); 3695 3696 switch (status) { 3697 case ADD_STA_SUCCESS: 3698 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3699 break; 3700 default: 3701 ret = -EIO; 3702 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3703 break; 3704 } 3705 3706 return ret; 3707 } 3708 3709 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3710 struct ieee80211_key_conf *keyconf, 3711 u8 sta_id, bool remove_key) 3712 { 3713 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3714 3715 /* verify the key details match the required command's expectations */ 3716 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3717 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3718 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3719 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3720 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3721 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3722 return -EINVAL; 3723 3724 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3725 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3726 return -EINVAL; 3727 3728 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3729 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3730 3731 if (remove_key) { 3732 /* This is a valid situation for IGTK */ 3733 if (sta_id == IWL_INVALID_STA) 3734 return 0; 3735 3736 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3737 } else { 3738 struct ieee80211_key_seq seq; 3739 const u8 *pn; 3740 3741 switch (keyconf->cipher) { 3742 case WLAN_CIPHER_SUITE_AES_CMAC: 3743 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3744 break; 3745 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3746 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3747 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3748 break; 3749 default: 3750 return -EINVAL; 3751 } 3752 3753 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3754 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3755 igtk_cmd.ctrl_flags |= 3756 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3757 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3758 pn = seq.aes_cmac.pn; 3759 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3760 ((u64) pn[4] << 8) | 3761 ((u64) pn[3] << 16) | 3762 ((u64) pn[2] << 24) | 3763 ((u64) pn[1] << 32) | 3764 ((u64) pn[0] << 40)); 3765 } 3766 3767 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3768 remove_key ? "removing" : "installing", 3769 keyconf->keyidx >= 6 ? "B" : "", 3770 keyconf->keyidx, igtk_cmd.sta_id); 3771 3772 if (!iwl_mvm_has_new_rx_api(mvm)) { 3773 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3774 .ctrl_flags = igtk_cmd.ctrl_flags, 3775 .key_id = igtk_cmd.key_id, 3776 .sta_id = igtk_cmd.sta_id, 3777 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3778 }; 3779 3780 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3781 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3782 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3783 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3784 } 3785 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3786 sizeof(igtk_cmd), &igtk_cmd); 3787 } 3788 3789 3790 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3791 struct ieee80211_vif *vif, 3792 struct ieee80211_sta *sta) 3793 { 3794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3795 3796 if (sta) 3797 return sta->addr; 3798 3799 if (vif->type == NL80211_IFTYPE_STATION && 3800 mvmvif->deflink.ap_sta_id != IWL_INVALID_STA) { 3801 u8 sta_id = mvmvif->deflink.ap_sta_id; 3802 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3803 lockdep_is_held(&mvm->mutex)); 3804 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3805 return NULL; 3806 3807 return sta->addr; 3808 } 3809 3810 3811 return NULL; 3812 } 3813 3814 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3815 struct ieee80211_vif *vif, 3816 struct ieee80211_sta *sta, 3817 struct ieee80211_key_conf *keyconf, 3818 u8 key_offset, 3819 bool mcast) 3820 { 3821 const u8 *addr; 3822 struct ieee80211_key_seq seq; 3823 u16 p1k[5]; 3824 u32 sta_id; 3825 bool mfp = false; 3826 3827 if (sta) { 3828 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3829 3830 sta_id = mvm_sta->deflink.sta_id; 3831 mfp = sta->mfp; 3832 } else if (vif->type == NL80211_IFTYPE_AP && 3833 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3834 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3835 3836 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3837 } else { 3838 IWL_ERR(mvm, "Failed to find station id\n"); 3839 return -EINVAL; 3840 } 3841 3842 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3843 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3844 if (!addr) { 3845 IWL_ERR(mvm, "Failed to find mac address\n"); 3846 return -EINVAL; 3847 } 3848 3849 /* get phase 1 key from mac80211 */ 3850 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3851 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3852 3853 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3854 seq.tkip.iv32, p1k, 0, key_offset, 3855 mfp); 3856 } 3857 3858 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3859 0, NULL, 0, key_offset, mfp); 3860 } 3861 3862 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3863 struct ieee80211_vif *vif, 3864 struct ieee80211_sta *sta, 3865 struct ieee80211_key_conf *keyconf, 3866 u8 key_offset) 3867 { 3868 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3869 struct iwl_mvm_sta *mvm_sta; 3870 u8 sta_id = IWL_INVALID_STA; 3871 int ret; 3872 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3873 3874 lockdep_assert_held(&mvm->mutex); 3875 3876 if (vif->type != NL80211_IFTYPE_AP || 3877 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3878 /* Get the station id from the mvm local station table */ 3879 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3880 if (!mvm_sta) { 3881 IWL_ERR(mvm, "Failed to find station\n"); 3882 return -EINVAL; 3883 } 3884 sta_id = mvm_sta->deflink.sta_id; 3885 3886 /* 3887 * It is possible that the 'sta' parameter is NULL, and thus 3888 * there is a need to retrieve the sta from the local station 3889 * table. 3890 */ 3891 if (!sta) { 3892 sta = rcu_dereference_protected( 3893 mvm->fw_id_to_mac_id[sta_id], 3894 lockdep_is_held(&mvm->mutex)); 3895 if (IS_ERR_OR_NULL(sta)) { 3896 IWL_ERR(mvm, "Invalid station id\n"); 3897 return -EINVAL; 3898 } 3899 } 3900 3901 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3902 return -EINVAL; 3903 } else { 3904 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3905 3906 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3907 } 3908 3909 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3910 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3911 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3912 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3913 goto end; 3914 } 3915 3916 /* If the key_offset is not pre-assigned, we need to find a 3917 * new offset to use. In normal cases, the offset is not 3918 * pre-assigned, but during HW_RESTART we want to reuse the 3919 * same indices, so we pass them when this function is called. 3920 * 3921 * In D3 entry, we need to hardcoded the indices (because the 3922 * firmware hardcodes the PTK offset to 0). In this case, we 3923 * need to make sure we don't overwrite the hw_key_idx in the 3924 * keyconf structure, because otherwise we cannot configure 3925 * the original ones back when resuming. 3926 */ 3927 if (key_offset == STA_KEY_IDX_INVALID) { 3928 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3929 if (key_offset == STA_KEY_IDX_INVALID) 3930 return -ENOSPC; 3931 keyconf->hw_key_idx = key_offset; 3932 } 3933 3934 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3935 if (ret) 3936 goto end; 3937 3938 /* 3939 * For WEP, the same key is used for multicast and unicast. Upload it 3940 * again, using the same key offset, and now pointing the other one 3941 * to the same key slot (offset). 3942 * If this fails, remove the original as well. 3943 */ 3944 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3945 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3946 sta) { 3947 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3948 key_offset, !mcast); 3949 if (ret) { 3950 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3951 goto end; 3952 } 3953 } 3954 3955 __set_bit(key_offset, mvm->fw_key_table); 3956 3957 end: 3958 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3959 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3960 sta ? sta->addr : zero_addr, ret); 3961 return ret; 3962 } 3963 3964 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3965 struct ieee80211_vif *vif, 3966 struct ieee80211_sta *sta, 3967 struct ieee80211_key_conf *keyconf) 3968 { 3969 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3970 struct iwl_mvm_sta *mvm_sta; 3971 u8 sta_id = IWL_INVALID_STA; 3972 int ret, i; 3973 3974 lockdep_assert_held(&mvm->mutex); 3975 3976 /* Get the station from the mvm local station table */ 3977 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3978 if (mvm_sta) 3979 sta_id = mvm_sta->deflink.sta_id; 3980 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3981 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3982 3983 3984 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3985 keyconf->keyidx, sta_id); 3986 3987 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3988 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3989 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3990 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3991 3992 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3993 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3994 keyconf->hw_key_idx); 3995 return -ENOENT; 3996 } 3997 3998 /* track which key was deleted last */ 3999 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 4000 if (mvm->fw_key_deleted[i] < U8_MAX) 4001 mvm->fw_key_deleted[i]++; 4002 } 4003 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 4004 4005 if (sta && !mvm_sta) { 4006 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 4007 return 0; 4008 } 4009 4010 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 4011 if (ret) 4012 return ret; 4013 4014 /* delete WEP key twice to get rid of (now useless) offset */ 4015 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 4016 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 4017 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 4018 4019 return ret; 4020 } 4021 4022 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 4023 struct ieee80211_vif *vif, 4024 struct ieee80211_key_conf *keyconf, 4025 struct ieee80211_sta *sta, u32 iv32, 4026 u16 *phase1key) 4027 { 4028 struct iwl_mvm_sta *mvm_sta; 4029 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4030 bool mfp = sta ? sta->mfp : false; 4031 4032 rcu_read_lock(); 4033 4034 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4035 if (WARN_ON_ONCE(!mvm_sta)) 4036 goto unlock; 4037 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4038 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4039 mfp); 4040 4041 unlock: 4042 rcu_read_unlock(); 4043 } 4044 4045 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4046 struct ieee80211_sta *sta) 4047 { 4048 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4049 struct iwl_mvm_add_sta_cmd cmd = { 4050 .add_modify = STA_MODE_MODIFY, 4051 .sta_id = mvmsta->deflink.sta_id, 4052 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4053 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4054 }; 4055 int ret; 4056 4057 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4058 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4059 if (ret) 4060 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4061 } 4062 4063 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4064 struct ieee80211_sta *sta, 4065 enum ieee80211_frame_release_type reason, 4066 u16 cnt, u16 tids, bool more_data, 4067 bool single_sta_queue) 4068 { 4069 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4070 struct iwl_mvm_add_sta_cmd cmd = { 4071 .add_modify = STA_MODE_MODIFY, 4072 .sta_id = mvmsta->deflink.sta_id, 4073 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4074 .sleep_tx_count = cpu_to_le16(cnt), 4075 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4076 }; 4077 int tid, ret; 4078 unsigned long _tids = tids; 4079 4080 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4081 * Note that this field is reserved and unused by firmware not 4082 * supporting GO uAPSD, so it's safe to always do this. 4083 */ 4084 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4085 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4086 4087 /* If we're releasing frames from aggregation or dqa queues then check 4088 * if all the queues that we're releasing frames from, combined, have: 4089 * - more frames than the service period, in which case more_data 4090 * needs to be set 4091 * - fewer than 'cnt' frames, in which case we need to adjust the 4092 * firmware command (but do that unconditionally) 4093 */ 4094 if (single_sta_queue) { 4095 int remaining = cnt; 4096 int sleep_tx_count; 4097 4098 spin_lock_bh(&mvmsta->lock); 4099 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4100 struct iwl_mvm_tid_data *tid_data; 4101 u16 n_queued; 4102 4103 tid_data = &mvmsta->tid_data[tid]; 4104 4105 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4106 if (n_queued > remaining) { 4107 more_data = true; 4108 remaining = 0; 4109 break; 4110 } 4111 remaining -= n_queued; 4112 } 4113 sleep_tx_count = cnt - remaining; 4114 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4115 mvmsta->sleep_tx_count = sleep_tx_count; 4116 spin_unlock_bh(&mvmsta->lock); 4117 4118 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4119 if (WARN_ON(cnt - remaining == 0)) { 4120 ieee80211_sta_eosp(sta); 4121 return; 4122 } 4123 } 4124 4125 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4126 if (more_data) 4127 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4128 4129 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4130 mvmsta->next_status_eosp = true; 4131 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4132 } else { 4133 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4134 } 4135 4136 /* block the Tx queues until the FW updated the sleep Tx count */ 4137 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4138 CMD_ASYNC | CMD_BLOCK_TXQS, 4139 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4140 if (ret) 4141 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4142 } 4143 4144 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4145 struct iwl_rx_cmd_buffer *rxb) 4146 { 4147 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4148 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4149 struct ieee80211_sta *sta; 4150 u32 sta_id = le32_to_cpu(notif->sta_id); 4151 4152 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4153 return; 4154 4155 rcu_read_lock(); 4156 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4157 if (!IS_ERR_OR_NULL(sta)) 4158 ieee80211_sta_eosp(sta); 4159 rcu_read_unlock(); 4160 } 4161 4162 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4163 struct iwl_mvm_sta *mvmsta, 4164 bool disable) 4165 { 4166 struct iwl_mvm_add_sta_cmd cmd = { 4167 .add_modify = STA_MODE_MODIFY, 4168 .sta_id = mvmsta->deflink.sta_id, 4169 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4170 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4171 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4172 }; 4173 int ret; 4174 4175 if (mvm->mld_api_is_used) { 4176 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4177 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4178 return; 4179 } 4180 4181 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4182 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4183 if (ret) 4184 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4185 } 4186 4187 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4188 struct ieee80211_sta *sta, 4189 bool disable) 4190 { 4191 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4192 4193 if (mvm->mld_api_is_used) { 4194 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4195 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4196 return; 4197 } 4198 4199 spin_lock_bh(&mvm_sta->lock); 4200 4201 if (mvm_sta->disable_tx == disable) { 4202 spin_unlock_bh(&mvm_sta->lock); 4203 return; 4204 } 4205 4206 mvm_sta->disable_tx = disable; 4207 4208 /* 4209 * If sta PS state is handled by mac80211, tell it to start/stop 4210 * queuing tx for this station. 4211 */ 4212 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4213 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4214 4215 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4216 4217 spin_unlock_bh(&mvm_sta->lock); 4218 } 4219 4220 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4221 struct iwl_mvm_vif *mvmvif, 4222 struct iwl_mvm_int_sta *sta, 4223 bool disable) 4224 { 4225 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4226 struct iwl_mvm_add_sta_cmd cmd = { 4227 .add_modify = STA_MODE_MODIFY, 4228 .sta_id = sta->sta_id, 4229 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4230 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4231 .mac_id_n_color = cpu_to_le32(id), 4232 }; 4233 int ret; 4234 4235 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4236 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4237 if (ret) 4238 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4239 } 4240 4241 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4242 struct iwl_mvm_vif *mvmvif, 4243 bool disable) 4244 { 4245 struct ieee80211_sta *sta; 4246 struct iwl_mvm_sta *mvm_sta; 4247 int i; 4248 4249 if (mvm->mld_api_is_used) { 4250 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4251 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, 4252 disable); 4253 return; 4254 } 4255 4256 rcu_read_lock(); 4257 4258 /* Block/unblock all the stations of the given mvmvif */ 4259 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4260 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4261 if (IS_ERR_OR_NULL(sta)) 4262 continue; 4263 4264 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4265 if (mvm_sta->mac_id_n_color != 4266 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4267 continue; 4268 4269 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4270 } 4271 4272 rcu_read_unlock(); 4273 4274 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4275 return; 4276 4277 /* Need to block/unblock also multicast station */ 4278 if (mvmvif->deflink.mcast_sta.sta_id != IWL_INVALID_STA) 4279 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4280 &mvmvif->deflink.mcast_sta, 4281 disable); 4282 4283 /* 4284 * Only unblock the broadcast station (FW blocks it for immediate 4285 * quiet, not the driver) 4286 */ 4287 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_INVALID_STA) 4288 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4289 &mvmvif->deflink.bcast_sta, 4290 disable); 4291 } 4292 4293 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4294 { 4295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4296 struct iwl_mvm_sta *mvmsta; 4297 4298 rcu_read_lock(); 4299 4300 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4301 4302 if (mvmsta) 4303 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4304 4305 rcu_read_unlock(); 4306 } 4307 4308 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4309 { 4310 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4311 4312 /* 4313 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4314 * to align the wrap around of ssn so we compare relevant values. 4315 */ 4316 if (mvm->trans->mac_cfg->gen2) 4317 sn &= 0xff; 4318 4319 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4320 } 4321 4322 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4323 struct ieee80211_vif *vif, 4324 u32 id) 4325 { 4326 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4327 .id = cpu_to_le32(id), 4328 }; 4329 int ret; 4330 4331 ret = iwl_mvm_send_cmd_pdu(mvm, 4332 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4333 CMD_ASYNC, 4334 sizeof(cancel_channel_switch_cmd), 4335 &cancel_channel_switch_cmd); 4336 if (ret) 4337 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4338 } 4339 4340 static int iwl_mvm_fw_sta_id_to_fw_link_id(struct iwl_mvm_vif *mvmvif, 4341 u8 fw_sta_id) 4342 { 4343 struct ieee80211_link_sta *link_sta = 4344 rcu_dereference(mvmvif->mvm->fw_id_to_link_sta[fw_sta_id]); 4345 struct iwl_mvm_vif_link_info *link; 4346 4347 if (WARN_ON_ONCE(!link_sta)) 4348 return -EINVAL; 4349 4350 link = mvmvif->link[link_sta->link_id]; 4351 4352 if (WARN_ON_ONCE(!link)) 4353 return -EINVAL; 4354 4355 return link->fw_link_id; 4356 } 4357 4358 #define IWL_MVM_TPT_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ) 4359 4360 void iwl_mvm_count_mpdu(struct iwl_mvm_sta *mvm_sta, u8 fw_sta_id, u32 count, 4361 bool tx, int queue) 4362 { 4363 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvm_sta->vif); 4364 struct iwl_mvm *mvm = mvmvif->mvm; 4365 struct iwl_mvm_tpt_counter *queue_counter; 4366 struct iwl_mvm_mpdu_counter *link_counter; 4367 u32 total_mpdus = 0; 4368 int fw_link_id; 4369 4370 /* Count only for a BSS sta, and only when EMLSR is possible */ 4371 if (!mvm_sta->mpdu_counters) 4372 return; 4373 4374 /* Map sta id to link id */ 4375 fw_link_id = iwl_mvm_fw_sta_id_to_fw_link_id(mvmvif, fw_sta_id); 4376 if (fw_link_id < 0) 4377 return; 4378 4379 queue_counter = &mvm_sta->mpdu_counters[queue]; 4380 link_counter = &queue_counter->per_link[fw_link_id]; 4381 4382 spin_lock_bh(&queue_counter->lock); 4383 4384 if (tx) 4385 link_counter->tx += count; 4386 else 4387 link_counter->rx += count; 4388 4389 /* 4390 * When not in EMLSR, the window and the decision to enter EMLSR are 4391 * handled during counting, when in EMLSR - in the statistics flow 4392 */ 4393 if (mvmvif->esr_active) 4394 goto out; 4395 4396 if (time_is_before_jiffies(queue_counter->window_start + 4397 IWL_MVM_TPT_COUNT_WINDOW)) { 4398 memset(queue_counter->per_link, 0, 4399 sizeof(queue_counter->per_link)); 4400 queue_counter->window_start = jiffies; 4401 4402 IWL_DEBUG_INFO(mvm, "MPDU counters are cleared\n"); 4403 } 4404 4405 for (int i = 0; i < IWL_FW_MAX_LINK_ID; i++) 4406 total_mpdus += tx ? queue_counter->per_link[i].tx : 4407 queue_counter->per_link[i].rx; 4408 4409 if (total_mpdus > IWL_MVM_ENTER_ESR_TPT_THRESH) 4410 wiphy_work_queue(mvmvif->mvm->hw->wiphy, 4411 &mvmvif->unblock_esr_tpt_wk); 4412 4413 out: 4414 spin_unlock_bh(&queue_counter->lock); 4415 } 4416