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