1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2/* 3 * Copyright (C) 2012-2015, 2018-2024 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 */ 18static 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 27int 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 */ 54u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 55 struct ieee80211_bss_conf *link_conf, 56 u32 *_agg_size) 57{ 58 u32 agg_size = 0, mpdu_dens = 0; 59 60 if (WARN_ON(!link_sta)) 61 return 0; 62 63 /* Note that we always use only legacy & highest supported PPDUs, so 64 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating 65 * the maximum A-MPDU size of various PPDU types in different bands, 66 * we only need to worry about the highest supported PPDU type here. 67 */ 68 69 if (link_sta->ht_cap.ht_supported) { 70 agg_size = link_sta->ht_cap.ampdu_factor; 71 mpdu_dens = link_sta->ht_cap.ampdu_density; 72 } 73 74 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) { 75 /* overwrite HT values on 6 GHz */ 76 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 77 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 78 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 79 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 80 } else if (link_sta->vht_cap.vht_supported) { 81 /* if VHT supported overwrite HT value */ 82 agg_size = u32_get_bits(link_sta->vht_cap.cap, 83 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); 84 } 85 86 /* D6.0 10.12.2 A-MPDU length limit rules 87 * A STA indicates the maximum length of the A-MPDU preEOF padding 88 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 89 * Exponent field in its HT Capabilities, VHT Capabilities, 90 * and HE 6 GHz Band Capabilities elements (if present) and the 91 * Maximum AMPDU Length Exponent Extension field in its HE 92 * Capabilities element 93 */ 94 if (link_sta->he_cap.has_he) 95 agg_size += 96 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 97 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 98 99 if (link_sta->eht_cap.has_eht) 100 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], 101 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); 102 103 /* Limit to max A-MPDU supported by FW */ 104 agg_size = min_t(u32, agg_size, 105 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); 106 107 *_agg_size = agg_size; 108 return mpdu_dens; 109} 110 111u8 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 */ 128int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 129 bool update, unsigned int flags) 130{ 131 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 132 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 133 .sta_id = mvm_sta->deflink.sta_id, 134 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 135 .add_modify = update ? 1 : 0, 136 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 137 STA_FLG_MIMO_EN_MSK | 138 STA_FLG_RTS_MIMO_PROT), 139 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 140 }; 141 int ret; 142 u32 status; 143 u32 agg_size = 0, mpdu_dens = 0; 144 145 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 146 add_sta_cmd.station_type = mvm_sta->sta_type; 147 148 if (!update || (flags & STA_MODIFY_QUEUES)) { 149 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 150 151 if (!iwl_mvm_has_new_tx_api(mvm)) { 152 add_sta_cmd.tfd_queue_msk = 153 cpu_to_le32(mvm_sta->tfd_queue_msk); 154 155 if (flags & STA_MODIFY_QUEUES) 156 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 157 } else { 158 WARN_ON(flags & STA_MODIFY_QUEUES); 159 } 160 } 161 162 switch (sta->deflink.bandwidth) { 163 case IEEE80211_STA_RX_BW_320: 164 case IEEE80211_STA_RX_BW_160: 165 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 166 fallthrough; 167 case IEEE80211_STA_RX_BW_80: 168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 169 fallthrough; 170 case IEEE80211_STA_RX_BW_40: 171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 172 fallthrough; 173 case IEEE80211_STA_RX_BW_20: 174 if (sta->deflink.ht_cap.ht_supported) 175 add_sta_cmd.station_flags |= 176 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 177 break; 178 } 179 180 switch (sta->deflink.rx_nss) { 181 case 1: 182 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 183 break; 184 case 2: 185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 186 break; 187 case 3 ... 8: 188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 189 break; 190 } 191 192 switch (sta->deflink.smps_mode) { 193 case IEEE80211_SMPS_AUTOMATIC: 194 case IEEE80211_SMPS_NUM_MODES: 195 WARN_ON(1); 196 break; 197 case IEEE80211_SMPS_STATIC: 198 /* override NSS */ 199 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 200 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 201 break; 202 case IEEE80211_SMPS_DYNAMIC: 203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 204 break; 205 case IEEE80211_SMPS_OFF: 206 /* nothing */ 207 break; 208 } 209 210 if (sta->deflink.ht_cap.ht_supported || 211 mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ) 212 add_sta_cmd.station_flags_msk |= 213 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 214 STA_FLG_AGG_MPDU_DENS_MSK); 215 216 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 217 &mvm_sta->vif->bss_conf, 218 &agg_size); 219 add_sta_cmd.station_flags |= 220 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 221 add_sta_cmd.station_flags |= 222 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 223 224 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 225 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 226 227 if (sta->wme) { 228 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 229 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 230 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 231 } 232 233 status = ADD_STA_SUCCESS; 234 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 235 iwl_mvm_add_sta_cmd_size(mvm), 236 &add_sta_cmd, &status); 237 if (ret) 238 return ret; 239 240 switch (status & IWL_ADD_STA_STATUS_MASK) { 241 case ADD_STA_SUCCESS: 242 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 243 break; 244 default: 245 ret = -EIO; 246 IWL_ERR(mvm, "ADD_STA failed\n"); 247 break; 248 } 249 250 return ret; 251} 252 253static 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); 298unlock: 299 rcu_read_unlock(); 300} 301 302/* Disable aggregations for a bitmap of TIDs for a given station */ 303static 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 351static 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 444static 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 */ 484static 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 547static 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 594static 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 */ 663static 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 */ 701static 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 780out: 781 /* Continue using the queue */ 782 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 783 784 return ret; 785} 786 787static 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 812static 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 845int 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 910static 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 944static 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 988static 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 1023static 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 1060static 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 */ 1146static 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 */ 1238static 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 1337static 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 1498out_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 1505int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm, 1506 struct ieee80211_txq *txq) 1507{ 1508 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1509 int ret = -EINVAL; 1510 1511 lockdep_assert_held(&mvm->mutex); 1512 1513 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) || 1514 !txq->sta) { 1515 return 0; 1516 } 1517 1518 if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) { 1519 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1520 ret = 0; 1521 } 1522 1523 local_bh_disable(); 1524 spin_lock(&mvm->add_stream_lock); 1525 if (!list_empty(&mvmtxq->list)) 1526 list_del_init(&mvmtxq->list); 1527 spin_unlock(&mvm->add_stream_lock); 1528 local_bh_enable(); 1529 1530 return ret; 1531} 1532 1533void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1534{ 1535 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1536 add_stream_wk); 1537 1538 mutex_lock(&mvm->mutex); 1539 1540 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1541 1542 while (!list_empty(&mvm->add_stream_txqs)) { 1543 struct iwl_mvm_txq *mvmtxq; 1544 struct ieee80211_txq *txq; 1545 u8 tid; 1546 1547 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1548 struct iwl_mvm_txq, list); 1549 1550 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1551 drv_priv); 1552 tid = txq->tid; 1553 if (tid == IEEE80211_NUM_TIDS) 1554 tid = IWL_MAX_TID_COUNT; 1555 1556 /* 1557 * We can't really do much here, but if this fails we can't 1558 * transmit anyway - so just don't transmit the frame etc. 1559 * and let them back up ... we've tried our best to allocate 1560 * a queue in the function itself. 1561 */ 1562 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1563 spin_lock_bh(&mvm->add_stream_lock); 1564 list_del_init(&mvmtxq->list); 1565 spin_unlock_bh(&mvm->add_stream_lock); 1566 continue; 1567 } 1568 1569 /* now we're ready, any remaining races/concurrency will be 1570 * handled in iwl_mvm_mac_itxq_xmit() 1571 */ 1572 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1573 1574 local_bh_disable(); 1575 spin_lock(&mvm->add_stream_lock); 1576 list_del_init(&mvmtxq->list); 1577 spin_unlock(&mvm->add_stream_lock); 1578 1579 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1580 local_bh_enable(); 1581 } 1582 1583 mutex_unlock(&mvm->mutex); 1584} 1585 1586static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1587 struct ieee80211_sta *sta, 1588 enum nl80211_iftype vif_type) 1589{ 1590 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1591 int queue; 1592 1593 /* queue reserving is disabled on new TX path */ 1594 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1595 return 0; 1596 1597 /* run the general cleanup/unsharing of queues */ 1598 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1599 1600 /* Make sure we have free resources for this STA */ 1601 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1602 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1603 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1604 IWL_MVM_QUEUE_FREE)) 1605 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1606 else 1607 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1608 IWL_MVM_DQA_MIN_DATA_QUEUE, 1609 IWL_MVM_DQA_MAX_DATA_QUEUE); 1610 if (queue < 0) { 1611 /* try again - this time kick out a queue if needed */ 1612 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1613 if (queue < 0) { 1614 IWL_ERR(mvm, "No available queues for new station\n"); 1615 return -ENOSPC; 1616 } 1617 } 1618 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1619 1620 mvmsta->reserved_queue = queue; 1621 1622 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1623 queue, mvmsta->deflink.sta_id); 1624 1625 return 0; 1626} 1627 1628/* 1629 * In DQA mode, after a HW restart the queues should be allocated as before, in 1630 * order to avoid race conditions when there are shared queues. This function 1631 * does the re-mapping and queue allocation. 1632 * 1633 * Note that re-enabling aggregations isn't done in this function. 1634 */ 1635void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1636 struct ieee80211_sta *sta) 1637{ 1638 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1639 unsigned int wdg = 1640 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1641 int i; 1642 struct iwl_trans_txq_scd_cfg cfg = { 1643 .sta_id = mvm_sta->deflink.sta_id, 1644 .frame_limit = IWL_FRAME_LIMIT, 1645 }; 1646 1647 /* Make sure reserved queue is still marked as such (if allocated) */ 1648 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1649 mvm->queue_info[mvm_sta->reserved_queue].status = 1650 IWL_MVM_QUEUE_RESERVED; 1651 1652 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1653 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1654 int txq_id = tid_data->txq_id; 1655 int ac; 1656 1657 if (txq_id == IWL_MVM_INVALID_QUEUE) 1658 continue; 1659 1660 ac = tid_to_mac80211_ac[i]; 1661 1662 if (iwl_mvm_has_new_tx_api(mvm)) { 1663 IWL_DEBUG_TX_QUEUES(mvm, 1664 "Re-mapping sta %d tid %d\n", 1665 mvm_sta->deflink.sta_id, i); 1666 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1667 mvm_sta->deflink.sta_id, 1668 i, wdg); 1669 /* 1670 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1671 * to try again later, we have no other good way of 1672 * failing here 1673 */ 1674 if (txq_id < 0) 1675 txq_id = IWL_MVM_INVALID_QUEUE; 1676 tid_data->txq_id = txq_id; 1677 1678 /* 1679 * Since we don't set the seq number after reset, and HW 1680 * sets it now, FW reset will cause the seq num to start 1681 * at 0 again, so driver will need to update it 1682 * internally as well, so it keeps in sync with real val 1683 */ 1684 tid_data->seq_number = 0; 1685 } else { 1686 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1687 1688 cfg.tid = i; 1689 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1690 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1691 txq_id == 1692 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1693 1694 IWL_DEBUG_TX_QUEUES(mvm, 1695 "Re-mapping sta %d tid %d to queue %d\n", 1696 mvm_sta->deflink.sta_id, i, 1697 txq_id); 1698 1699 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1700 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1701 } 1702 } 1703} 1704 1705static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1706 struct iwl_mvm_int_sta *sta, 1707 const u8 *addr, 1708 u16 mac_id, u16 color) 1709{ 1710 struct iwl_mvm_add_sta_cmd cmd; 1711 int ret; 1712 u32 status = ADD_STA_SUCCESS; 1713 1714 lockdep_assert_held(&mvm->mutex); 1715 1716 memset(&cmd, 0, sizeof(cmd)); 1717 cmd.sta_id = sta->sta_id; 1718 1719 if (iwl_mvm_has_new_station_api(mvm->fw) && 1720 sta->type == IWL_STA_AUX_ACTIVITY) 1721 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1722 else 1723 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1724 color)); 1725 1726 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1727 cmd.station_type = sta->type; 1728 1729 if (!iwl_mvm_has_new_tx_api(mvm)) 1730 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1731 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1732 1733 if (addr) 1734 memcpy(cmd.addr, addr, ETH_ALEN); 1735 1736 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1737 iwl_mvm_add_sta_cmd_size(mvm), 1738 &cmd, &status); 1739 if (ret) 1740 return ret; 1741 1742 switch (status & IWL_ADD_STA_STATUS_MASK) { 1743 case ADD_STA_SUCCESS: 1744 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1745 return 0; 1746 default: 1747 ret = -EIO; 1748 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1749 status); 1750 break; 1751 } 1752 return ret; 1753} 1754 1755/* Initialize driver data of a new sta */ 1756int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1757 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1758{ 1759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1760 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1761 struct iwl_mvm_rxq_dup_data *dup_data; 1762 int i, ret = 0; 1763 1764 lockdep_assert_held(&mvm->mutex); 1765 1766 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1767 mvmvif->color); 1768 mvm_sta->vif = vif; 1769 1770 /* for MLD sta_id(s) should be allocated for each link before calling 1771 * this function 1772 */ 1773 if (!mvm->mld_api_is_used) { 1774 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1775 return -EINVAL; 1776 1777 mvm_sta->deflink.sta_id = sta_id; 1778 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1779 1780 if (!mvm->trans->trans_cfg->gen2) 1781 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1782 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1783 else 1784 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1785 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1786 } 1787 1788 mvm_sta->tt_tx_protection = false; 1789 mvm_sta->sta_type = sta_type; 1790 1791 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1792 1793 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1794 /* 1795 * Mark all queues for this STA as unallocated and defer TX 1796 * frames until the queue is allocated 1797 */ 1798 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1799 } 1800 1801 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1802 struct iwl_mvm_txq *mvmtxq = 1803 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1804 1805 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1806 INIT_LIST_HEAD(&mvmtxq->list); 1807 atomic_set(&mvmtxq->tx_request, 0); 1808 } 1809 1810 if (iwl_mvm_has_new_rx_api(mvm)) { 1811 int q; 1812 1813 dup_data = kcalloc(mvm->trans->num_rx_queues, 1814 sizeof(*dup_data), GFP_KERNEL); 1815 if (!dup_data) 1816 return -ENOMEM; 1817 /* 1818 * Initialize all the last_seq values to 0xffff which can never 1819 * compare equal to the frame's seq_ctrl in the check in 1820 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1821 * number and fragmented packets don't reach that function. 1822 * 1823 * This thus allows receiving a packet with seqno 0 and the 1824 * retry bit set as the very first packet on a new TID. 1825 */ 1826 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1827 memset(dup_data[q].last_seq, 0xff, 1828 sizeof(dup_data[q].last_seq)); 1829 mvm_sta->dup_data = dup_data; 1830 } 1831 1832 if (!iwl_mvm_has_new_tx_api(mvm)) { 1833 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1834 ieee80211_vif_type_p2p(vif)); 1835 if (ret) 1836 return ret; 1837 } 1838 1839 /* 1840 * if rs is registered with mac80211, then "add station" will be handled 1841 * via the corresponding ops, otherwise need to notify rate scaling here 1842 */ 1843 if (iwl_mvm_has_tlc_offload(mvm)) 1844 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1845 else 1846 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1847 1848 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1849 1850 return 0; 1851} 1852 1853int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1854 struct ieee80211_vif *vif, 1855 struct ieee80211_sta *sta) 1856{ 1857 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1858 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1859 int ret, sta_id; 1860 bool sta_update = false; 1861 unsigned int sta_flags = 0; 1862 1863 lockdep_assert_held(&mvm->mutex); 1864 1865 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1866 sta_id = iwl_mvm_find_free_sta_id(mvm, 1867 ieee80211_vif_type_p2p(vif)); 1868 else 1869 sta_id = mvm_sta->deflink.sta_id; 1870 1871 if (sta_id == IWL_MVM_INVALID_STA) 1872 return -ENOSPC; 1873 1874 spin_lock_init(&mvm_sta->lock); 1875 1876 /* if this is a HW restart re-alloc existing queues */ 1877 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1878 struct iwl_mvm_int_sta tmp_sta = { 1879 .sta_id = sta_id, 1880 .type = mvm_sta->sta_type, 1881 }; 1882 1883 /* First add an empty station since allocating 1884 * a queue requires a valid station 1885 */ 1886 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1887 mvmvif->id, mvmvif->color); 1888 if (ret) 1889 goto err; 1890 1891 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1892 sta_update = true; 1893 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1894 goto update_fw; 1895 } 1896 1897 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1898 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1899 if (ret) 1900 goto err; 1901 1902update_fw: 1903 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1904 if (ret) 1905 goto err; 1906 1907 if (vif->type == NL80211_IFTYPE_STATION) { 1908 if (!sta->tdls) { 1909 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1910 mvmvif->deflink.ap_sta_id = sta_id; 1911 } else { 1912 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1913 } 1914 } 1915 1916 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1917 1918 return 0; 1919 1920err: 1921 return ret; 1922} 1923 1924int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1925 bool drain) 1926{ 1927 struct iwl_mvm_add_sta_cmd cmd = {}; 1928 int ret; 1929 u32 status; 1930 1931 lockdep_assert_held(&mvm->mutex); 1932 1933 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1934 cmd.sta_id = mvmsta->deflink.sta_id; 1935 cmd.add_modify = STA_MODE_MODIFY; 1936 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1937 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1938 1939 status = ADD_STA_SUCCESS; 1940 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1941 iwl_mvm_add_sta_cmd_size(mvm), 1942 &cmd, &status); 1943 if (ret) 1944 return ret; 1945 1946 switch (status & IWL_ADD_STA_STATUS_MASK) { 1947 case ADD_STA_SUCCESS: 1948 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1949 mvmsta->deflink.sta_id); 1950 break; 1951 default: 1952 ret = -EIO; 1953 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1954 mvmsta->deflink.sta_id); 1955 break; 1956 } 1957 1958 return ret; 1959} 1960 1961/* 1962 * Remove a station from the FW table. Before sending the command to remove 1963 * the station validate that the station is indeed known to the driver (sanity 1964 * only). 1965 */ 1966static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1967{ 1968 struct ieee80211_sta *sta; 1969 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1970 .sta_id = sta_id, 1971 }; 1972 int ret; 1973 1974 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1975 lockdep_is_held(&mvm->mutex)); 1976 1977 /* Note: internal stations are marked as error values */ 1978 if (!sta) { 1979 IWL_ERR(mvm, "Invalid station id\n"); 1980 return -EINVAL; 1981 } 1982 1983 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1984 sizeof(rm_sta_cmd), &rm_sta_cmd); 1985 if (ret) { 1986 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1987 return ret; 1988 } 1989 1990 return 0; 1991} 1992 1993static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1994 struct ieee80211_vif *vif, 1995 struct ieee80211_sta *sta) 1996{ 1997 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1998 int i; 1999 2000 lockdep_assert_held(&mvm->mutex); 2001 2002 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2003 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 2004 continue; 2005 2006 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 2007 &mvm_sta->tid_data[i].txq_id, i); 2008 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 2009 } 2010 2011 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 2012 struct iwl_mvm_txq *mvmtxq = 2013 iwl_mvm_txq_from_mac80211(sta->txq[i]); 2014 2015 spin_lock_bh(&mvm->add_stream_lock); 2016 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 2017 list_del_init(&mvmtxq->list); 2018 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 2019 spin_unlock_bh(&mvm->add_stream_lock); 2020 } 2021} 2022 2023int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 2024 struct iwl_mvm_sta *mvm_sta) 2025{ 2026 int i; 2027 2028 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2029 u16 txq_id; 2030 int ret; 2031 2032 spin_lock_bh(&mvm_sta->lock); 2033 txq_id = mvm_sta->tid_data[i].txq_id; 2034 spin_unlock_bh(&mvm_sta->lock); 2035 2036 if (txq_id == IWL_MVM_INVALID_QUEUE) 2037 continue; 2038 2039 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2040 if (ret) 2041 return ret; 2042 } 2043 2044 return 0; 2045} 2046 2047/* Execute the common part for both MLD and non-MLD modes. 2048 * Returns if we're done with removing the station, either 2049 * with error or success 2050 */ 2051bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2052 struct ieee80211_sta *sta, 2053 struct ieee80211_link_sta *link_sta, int *ret) 2054{ 2055 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2056 struct iwl_mvm_vif_link_info *mvm_link = 2057 mvmvif->link[link_sta->link_id]; 2058 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2059 struct iwl_mvm_link_sta *mvm_link_sta; 2060 u8 sta_id; 2061 2062 lockdep_assert_held(&mvm->mutex); 2063 2064 mvm_link_sta = 2065 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2066 lockdep_is_held(&mvm->mutex)); 2067 sta_id = mvm_link_sta->sta_id; 2068 2069 /* If there is a TXQ still marked as reserved - free it */ 2070 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2071 u8 reserved_txq = mvm_sta->reserved_queue; 2072 enum iwl_mvm_queue_status *status; 2073 2074 /* 2075 * If no traffic has gone through the reserved TXQ - it 2076 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2077 * should be manually marked as free again 2078 */ 2079 status = &mvm->queue_info[reserved_txq].status; 2080 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2081 (*status != IWL_MVM_QUEUE_FREE), 2082 "sta_id %d reserved txq %d status %d", 2083 sta_id, reserved_txq, *status)) { 2084 *ret = -EINVAL; 2085 return true; 2086 } 2087 2088 *status = IWL_MVM_QUEUE_FREE; 2089 } 2090 2091 if (vif->type == NL80211_IFTYPE_STATION && 2092 mvm_link->ap_sta_id == sta_id) { 2093 /* if associated - we can't remove the AP STA now */ 2094 if (vif->cfg.assoc) 2095 return true; 2096 2097 /* first remove remaining keys */ 2098 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2099 2100 /* unassoc - go ahead - remove the AP STA now */ 2101 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2102 } 2103 2104 /* 2105 * This shouldn't happen - the TDLS channel switch should be canceled 2106 * before the STA is removed. 2107 */ 2108 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2109 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2110 cancel_delayed_work(&mvm->tdls_cs.dwork); 2111 } 2112 2113 return false; 2114} 2115 2116int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2117 struct ieee80211_vif *vif, 2118 struct ieee80211_sta *sta) 2119{ 2120 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2121 int ret; 2122 2123 lockdep_assert_held(&mvm->mutex); 2124 2125 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2126 if (ret) 2127 return ret; 2128 2129 /* flush its queues here since we are freeing mvm_sta */ 2130 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id, 2131 mvm_sta->tfd_queue_msk); 2132 if (ret) 2133 return ret; 2134 if (iwl_mvm_has_new_tx_api(mvm)) { 2135 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2136 } else { 2137 u32 q_mask = mvm_sta->tfd_queue_msk; 2138 2139 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2140 q_mask); 2141 } 2142 if (ret) 2143 return ret; 2144 2145 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2146 2147 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2148 2149 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2150 return ret; 2151 2152 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2153 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2154 2155 return ret; 2156} 2157 2158int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2159 struct ieee80211_vif *vif, 2160 u8 sta_id) 2161{ 2162 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2163 2164 lockdep_assert_held(&mvm->mutex); 2165 2166 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2167 return ret; 2168} 2169 2170int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2171 struct iwl_mvm_int_sta *sta, 2172 u32 qmask, enum nl80211_iftype iftype, 2173 u8 type) 2174{ 2175 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2176 sta->sta_id == IWL_MVM_INVALID_STA) { 2177 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2178 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2179 return -ENOSPC; 2180 } 2181 2182 sta->tfd_queue_msk = qmask; 2183 sta->type = type; 2184 2185 /* put a non-NULL value so iterating over the stations won't stop */ 2186 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2187 return 0; 2188} 2189 2190void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2191{ 2192 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2193 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2194 sta->sta_id = IWL_MVM_INVALID_STA; 2195} 2196 2197static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2198 u8 sta_id, u8 fifo) 2199{ 2200 unsigned int wdg_timeout = 2201 mvm->trans->trans_cfg->base_params->wd_timeout; 2202 struct iwl_trans_txq_scd_cfg cfg = { 2203 .fifo = fifo, 2204 .sta_id = sta_id, 2205 .tid = IWL_MAX_TID_COUNT, 2206 .aggregate = false, 2207 .frame_limit = IWL_FRAME_LIMIT, 2208 }; 2209 2210 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2211 2212 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2213} 2214 2215static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2216{ 2217 unsigned int wdg_timeout = 2218 mvm->trans->trans_cfg->base_params->wd_timeout; 2219 2220 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2221 2222 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2223 wdg_timeout); 2224} 2225 2226static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2227 int maccolor, u8 *addr, 2228 struct iwl_mvm_int_sta *sta, 2229 u16 *queue, int fifo) 2230{ 2231 int ret; 2232 2233 /* Map queue to fifo - needs to happen before adding station */ 2234 if (!iwl_mvm_has_new_tx_api(mvm)) 2235 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2236 2237 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2238 if (ret) { 2239 if (!iwl_mvm_has_new_tx_api(mvm)) 2240 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2241 IWL_MAX_TID_COUNT); 2242 return ret; 2243 } 2244 2245 /* 2246 * For 22000 firmware and on we cannot add queue to a station unknown 2247 * to firmware so enable queue here - after the station was added 2248 */ 2249 if (iwl_mvm_has_new_tx_api(mvm)) { 2250 int txq; 2251 2252 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2253 if (txq < 0) { 2254 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2255 return txq; 2256 } 2257 2258 *queue = txq; 2259 } 2260 2261 return 0; 2262} 2263 2264int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2265{ 2266 int ret; 2267 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2268 BIT(mvm->aux_queue); 2269 2270 lockdep_assert_held(&mvm->mutex); 2271 2272 /* Allocate aux station and assign to it the aux queue */ 2273 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2274 NL80211_IFTYPE_UNSPECIFIED, 2275 IWL_STA_AUX_ACTIVITY); 2276 if (ret) 2277 return ret; 2278 2279 /* 2280 * In CDB NICs we need to specify which lmac to use for aux activity 2281 * using the mac_id argument place to send lmac_id to the function 2282 */ 2283 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2284 &mvm->aux_sta, &mvm->aux_queue, 2285 IWL_MVM_TX_FIFO_MCAST); 2286 if (ret) { 2287 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2288 return ret; 2289 } 2290 2291 return 0; 2292} 2293 2294int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2295{ 2296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2297 2298 lockdep_assert_held(&mvm->mutex); 2299 2300 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2301 NULL, &mvm->snif_sta, 2302 &mvm->snif_queue, 2303 IWL_MVM_TX_FIFO_BE); 2304} 2305 2306int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2307{ 2308 int ret; 2309 2310 lockdep_assert_held(&mvm->mutex); 2311 2312 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2313 return -EINVAL; 2314 2315 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2316 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2317 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2318 if (ret) 2319 IWL_WARN(mvm, "Failed sending remove station\n"); 2320 2321 return ret; 2322} 2323 2324int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2325{ 2326 int ret; 2327 2328 lockdep_assert_held(&mvm->mutex); 2329 2330 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2331 return -EINVAL; 2332 2333 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2334 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2335 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2336 if (ret) 2337 IWL_WARN(mvm, "Failed sending remove station\n"); 2338 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2339 2340 return ret; 2341} 2342 2343void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2344{ 2345 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2346} 2347 2348/* 2349 * Send the add station command for the vif's broadcast station. 2350 * Assumes that the station was already allocated. 2351 * 2352 * @mvm: the mvm component 2353 * @vif: the interface to which the broadcast station is added 2354 * @bsta: the broadcast station to add. 2355 */ 2356int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2357{ 2358 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2359 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2360 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2361 const u8 *baddr = _baddr; 2362 int queue; 2363 int ret; 2364 unsigned int wdg_timeout = 2365 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2366 struct iwl_trans_txq_scd_cfg cfg = { 2367 .fifo = IWL_MVM_TX_FIFO_VO, 2368 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2369 .tid = IWL_MAX_TID_COUNT, 2370 .aggregate = false, 2371 .frame_limit = IWL_FRAME_LIMIT, 2372 }; 2373 2374 lockdep_assert_held(&mvm->mutex); 2375 2376 if (!iwl_mvm_has_new_tx_api(mvm)) { 2377 if (vif->type == NL80211_IFTYPE_AP || 2378 vif->type == NL80211_IFTYPE_ADHOC) { 2379 queue = mvm->probe_queue; 2380 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2381 queue = mvm->p2p_dev_queue; 2382 } else { 2383 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2384 return -EINVAL; 2385 } 2386 2387 bsta->tfd_queue_msk |= BIT(queue); 2388 2389 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2390 } 2391 2392 if (vif->type == NL80211_IFTYPE_ADHOC) 2393 baddr = vif->bss_conf.bssid; 2394 2395 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2396 return -ENOSPC; 2397 2398 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2399 mvmvif->id, mvmvif->color); 2400 if (ret) 2401 return ret; 2402 2403 /* 2404 * For 22000 firmware and on we cannot add queue to a station unknown 2405 * to firmware so enable queue here - after the station was added 2406 */ 2407 if (iwl_mvm_has_new_tx_api(mvm)) { 2408 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2409 IWL_MAX_TID_COUNT, 2410 wdg_timeout); 2411 if (queue < 0) { 2412 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2413 return queue; 2414 } 2415 2416 if (vif->type == NL80211_IFTYPE_AP || 2417 vif->type == NL80211_IFTYPE_ADHOC) { 2418 /* for queue management */ 2419 mvm->probe_queue = queue; 2420 /* for use in TX */ 2421 mvmvif->deflink.mgmt_queue = queue; 2422 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2423 mvm->p2p_dev_queue = queue; 2424 } 2425 } else if (vif->type == NL80211_IFTYPE_AP || 2426 vif->type == NL80211_IFTYPE_ADHOC) { 2427 /* set it for use in TX */ 2428 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2429 } 2430 2431 return 0; 2432} 2433 2434void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2435 struct ieee80211_vif *vif) 2436{ 2437 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2438 u16 *queueptr, queue; 2439 2440 lockdep_assert_held(&mvm->mutex); 2441 2442 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, 2443 mvmvif->deflink.bcast_sta.tfd_queue_msk); 2444 2445 switch (vif->type) { 2446 case NL80211_IFTYPE_AP: 2447 case NL80211_IFTYPE_ADHOC: 2448 queueptr = &mvm->probe_queue; 2449 break; 2450 case NL80211_IFTYPE_P2P_DEVICE: 2451 queueptr = &mvm->p2p_dev_queue; 2452 break; 2453 default: 2454 WARN(1, "Can't free bcast queue on vif type %d\n", 2455 vif->type); 2456 return; 2457 } 2458 2459 queue = *queueptr; 2460 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2461 queueptr, IWL_MAX_TID_COUNT); 2462 2463 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2464 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2465 2466 if (iwl_mvm_has_new_tx_api(mvm)) 2467 return; 2468 2469 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2470 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2471} 2472 2473/* Send the FW a request to remove the station from it's internal data 2474 * structures, but DO NOT remove the entry from the local data structures. */ 2475int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2476{ 2477 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2478 int ret; 2479 2480 lockdep_assert_held(&mvm->mutex); 2481 2482 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2483 2484 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2485 if (ret) 2486 IWL_WARN(mvm, "Failed sending remove station\n"); 2487 return ret; 2488} 2489 2490int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2491{ 2492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2493 2494 lockdep_assert_held(&mvm->mutex); 2495 2496 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2497 ieee80211_vif_type_p2p(vif), 2498 IWL_STA_GENERAL_PURPOSE); 2499} 2500 2501/* Allocate a new station entry for the broadcast station to the given vif, 2502 * and send it to the FW. 2503 * Note that each P2P mac should have its own broadcast station. 2504 * 2505 * @mvm: the mvm component 2506 * @vif: the interface to which the broadcast station is added 2507 * @bsta: the broadcast station to add. */ 2508int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2509{ 2510 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2511 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2512 int ret; 2513 2514 lockdep_assert_held(&mvm->mutex); 2515 2516 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2517 if (ret) 2518 return ret; 2519 2520 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2521 2522 if (ret) 2523 iwl_mvm_dealloc_int_sta(mvm, bsta); 2524 2525 return ret; 2526} 2527 2528void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2529{ 2530 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2531 2532 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2533} 2534 2535/* 2536 * Send the FW a request to remove the station from it's internal data 2537 * structures, and in addition remove it from the local data structure. 2538 */ 2539int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2540{ 2541 int ret; 2542 2543 lockdep_assert_held(&mvm->mutex); 2544 2545 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2546 2547 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2548 2549 return ret; 2550} 2551 2552/* 2553 * Allocate a new station entry for the multicast station to the given vif, 2554 * and send it to the FW. 2555 * Note that each AP/GO mac should have its own multicast station. 2556 * 2557 * @mvm: the mvm component 2558 * @vif: the interface to which the multicast station is added 2559 */ 2560int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2561{ 2562 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2563 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2564 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2565 const u8 *maddr = _maddr; 2566 struct iwl_trans_txq_scd_cfg cfg = { 2567 .fifo = vif->type == NL80211_IFTYPE_AP ? 2568 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2569 .sta_id = msta->sta_id, 2570 .tid = 0, 2571 .aggregate = false, 2572 .frame_limit = IWL_FRAME_LIMIT, 2573 }; 2574 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2575 int ret; 2576 2577 lockdep_assert_held(&mvm->mutex); 2578 2579 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2580 vif->type != NL80211_IFTYPE_ADHOC)) 2581 return -EOPNOTSUPP; 2582 2583 /* 2584 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2585 * invalid, so make sure we use the queue we want. 2586 * Note that this is done here as we want to avoid making DQA 2587 * changes in mac80211 layer. 2588 */ 2589 if (vif->type == NL80211_IFTYPE_ADHOC) 2590 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2591 2592 /* 2593 * While in previous FWs we had to exclude cab queue from TFD queue 2594 * mask, now it is needed as any other queue. 2595 */ 2596 if (!iwl_mvm_has_new_tx_api(mvm) && 2597 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2598 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2599 &cfg, 2600 timeout); 2601 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2602 } 2603 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2604 mvmvif->id, mvmvif->color); 2605 if (ret) 2606 goto err; 2607 2608 /* 2609 * Enable cab queue after the ADD_STA command is sent. 2610 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2611 * command with unknown station id, and for FW that doesn't support 2612 * station API since the cab queue is not included in the 2613 * tfd_queue_mask. 2614 */ 2615 if (iwl_mvm_has_new_tx_api(mvm)) { 2616 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2617 0, timeout); 2618 if (queue < 0) { 2619 ret = queue; 2620 goto err; 2621 } 2622 mvmvif->deflink.cab_queue = queue; 2623 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2624 IWL_UCODE_TLV_API_STA_TYPE)) 2625 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2626 &cfg, 2627 timeout); 2628 2629 return 0; 2630err: 2631 iwl_mvm_dealloc_int_sta(mvm, msta); 2632 return ret; 2633} 2634 2635static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2636 struct ieee80211_key_conf *keyconf, 2637 bool mcast) 2638{ 2639 union { 2640 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2641 struct iwl_mvm_add_sta_key_cmd cmd; 2642 } u = {}; 2643 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2644 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2645 __le16 key_flags; 2646 int ret, size; 2647 u32 status; 2648 2649 /* This is a valid situation for GTK removal */ 2650 if (sta_id == IWL_MVM_INVALID_STA) 2651 return 0; 2652 2653 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2654 STA_KEY_FLG_KEYID_MSK); 2655 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2656 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2657 2658 if (mcast) 2659 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2660 2661 /* 2662 * The fields assigned here are in the same location at the start 2663 * of the command, so we can do this union trick. 2664 */ 2665 u.cmd.common.key_flags = key_flags; 2666 u.cmd.common.key_offset = keyconf->hw_key_idx; 2667 u.cmd.common.sta_id = sta_id; 2668 2669 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2670 2671 status = ADD_STA_SUCCESS; 2672 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2673 &status); 2674 2675 switch (status) { 2676 case ADD_STA_SUCCESS: 2677 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2678 break; 2679 default: 2680 ret = -EIO; 2681 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2682 break; 2683 } 2684 2685 return ret; 2686} 2687 2688/* 2689 * Send the FW a request to remove the station from it's internal data 2690 * structures, and in addition remove it from the local data structure. 2691 */ 2692int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2693{ 2694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2695 int ret; 2696 2697 lockdep_assert_held(&mvm->mutex); 2698 2699 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id, 2700 mvmvif->deflink.mcast_sta.tfd_queue_msk); 2701 2702 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2703 &mvmvif->deflink.cab_queue, 0); 2704 2705 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2706 if (ret) 2707 IWL_WARN(mvm, "Failed sending remove station\n"); 2708 2709 return ret; 2710} 2711 2712static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2713{ 2714 struct iwl_mvm_delba_data notif = { 2715 .baid = baid, 2716 }; 2717 2718 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2719 ¬if, sizeof(notif)); 2720}; 2721 2722static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2723 struct iwl_mvm_baid_data *data) 2724{ 2725 int i; 2726 2727 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2728 2729 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2730 int j; 2731 struct iwl_mvm_reorder_buffer *reorder_buf = 2732 &data->reorder_buf[i]; 2733 struct iwl_mvm_reorder_buf_entry *entries = 2734 &data->entries[i * data->entries_per_queue]; 2735 2736 spin_lock_bh(&reorder_buf->lock); 2737 if (likely(!reorder_buf->num_stored)) { 2738 spin_unlock_bh(&reorder_buf->lock); 2739 continue; 2740 } 2741 2742 /* 2743 * This shouldn't happen in regular DELBA since the internal 2744 * delBA notification should trigger a release of all frames in 2745 * the reorder buffer. 2746 */ 2747 WARN_ON(1); 2748 2749 for (j = 0; j < reorder_buf->buf_size; j++) 2750 __skb_queue_purge(&entries[j].frames); 2751 2752 spin_unlock_bh(&reorder_buf->lock); 2753 } 2754} 2755 2756static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2757 struct iwl_mvm_baid_data *data, 2758 u16 ssn, u16 buf_size) 2759{ 2760 int i; 2761 2762 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2763 struct iwl_mvm_reorder_buffer *reorder_buf = 2764 &data->reorder_buf[i]; 2765 struct iwl_mvm_reorder_buf_entry *entries = 2766 &data->entries[i * data->entries_per_queue]; 2767 int j; 2768 2769 reorder_buf->num_stored = 0; 2770 reorder_buf->head_sn = ssn; 2771 reorder_buf->buf_size = buf_size; 2772 spin_lock_init(&reorder_buf->lock); 2773 reorder_buf->mvm = mvm; 2774 reorder_buf->queue = i; 2775 reorder_buf->valid = false; 2776 for (j = 0; j < reorder_buf->buf_size; j++) 2777 __skb_queue_head_init(&entries[j].frames); 2778 } 2779} 2780 2781static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2782 struct ieee80211_sta *sta, 2783 bool start, int tid, u16 ssn, 2784 u16 buf_size) 2785{ 2786 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2787 struct iwl_mvm_add_sta_cmd cmd = { 2788 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2789 .sta_id = mvm_sta->deflink.sta_id, 2790 .add_modify = STA_MODE_MODIFY, 2791 }; 2792 u32 status; 2793 int ret; 2794 2795 if (start) { 2796 cmd.add_immediate_ba_tid = tid; 2797 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2798 cmd.rx_ba_window = cpu_to_le16(buf_size); 2799 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2800 } else { 2801 cmd.remove_immediate_ba_tid = tid; 2802 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2803 } 2804 2805 status = ADD_STA_SUCCESS; 2806 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2807 iwl_mvm_add_sta_cmd_size(mvm), 2808 &cmd, &status); 2809 if (ret) 2810 return ret; 2811 2812 switch (status & IWL_ADD_STA_STATUS_MASK) { 2813 case ADD_STA_SUCCESS: 2814 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2815 start ? "start" : "stopp"); 2816 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2817 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2818 return -EINVAL; 2819 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2820 case ADD_STA_IMMEDIATE_BA_FAILURE: 2821 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2822 return -ENOSPC; 2823 default: 2824 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2825 start ? "start" : "stopp", status); 2826 return -EIO; 2827 } 2828} 2829 2830static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2831 struct ieee80211_sta *sta, 2832 bool start, int tid, u16 ssn, 2833 u16 buf_size, int baid) 2834{ 2835 struct iwl_rx_baid_cfg_cmd cmd = { 2836 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2837 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2838 }; 2839 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2840 int ret; 2841 2842 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2843 2844 if (start) { 2845 cmd.alloc.sta_id_mask = 2846 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2847 cmd.alloc.tid = tid; 2848 cmd.alloc.ssn = cpu_to_le16(ssn); 2849 cmd.alloc.win_size = cpu_to_le16(buf_size); 2850 baid = -EIO; 2851 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2852 cmd.remove_v1.baid = cpu_to_le32(baid); 2853 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2854 } else { 2855 cmd.remove.sta_id_mask = 2856 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2857 cmd.remove.tid = cpu_to_le32(tid); 2858 } 2859 2860 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2861 &cmd, &baid); 2862 if (ret) 2863 return ret; 2864 2865 if (!start) { 2866 /* ignore firmware baid on remove */ 2867 baid = 0; 2868 } 2869 2870 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2871 start ? "start" : "stopp"); 2872 2873 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2874 return -EINVAL; 2875 2876 return baid; 2877} 2878 2879static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2880 bool start, int tid, u16 ssn, u16 buf_size, 2881 int baid) 2882{ 2883 if (fw_has_capa(&mvm->fw->ucode_capa, 2884 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2885 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2886 tid, ssn, buf_size, baid); 2887 2888 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2889 tid, ssn, buf_size); 2890} 2891 2892int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2893 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2894{ 2895 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2896 struct iwl_mvm_baid_data *baid_data = NULL; 2897 int ret, baid; 2898 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2899 IWL_MAX_BAID_OLD; 2900 2901 lockdep_assert_held(&mvm->mutex); 2902 2903 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2904 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2905 return -ENOSPC; 2906 } 2907 2908 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2909 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2910 2911 /* sparse doesn't like the __align() so don't check */ 2912#ifndef __CHECKER__ 2913 /* 2914 * The division below will be OK if either the cache line size 2915 * can be divided by the entry size (ALIGN will round up) or if 2916 * if the entry size can be divided by the cache line size, in 2917 * which case the ALIGN() will do nothing. 2918 */ 2919 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2920 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2921#endif 2922 2923 /* 2924 * Upward align the reorder buffer size to fill an entire cache 2925 * line for each queue, to avoid sharing cache lines between 2926 * different queues. 2927 */ 2928 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2929 2930 /* 2931 * Allocate here so if allocation fails we can bail out early 2932 * before starting the BA session in the firmware 2933 */ 2934 baid_data = kzalloc(sizeof(*baid_data) + 2935 mvm->trans->num_rx_queues * 2936 reorder_buf_size, 2937 GFP_KERNEL); 2938 if (!baid_data) 2939 return -ENOMEM; 2940 2941 /* 2942 * This division is why we need the above BUILD_BUG_ON(), 2943 * if that doesn't hold then this will not be right. 2944 */ 2945 baid_data->entries_per_queue = 2946 reorder_buf_size / sizeof(baid_data->entries[0]); 2947 } 2948 2949 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2950 baid = mvm_sta->tid_to_baid[tid]; 2951 } else { 2952 /* we don't really need it in this case */ 2953 baid = -1; 2954 } 2955 2956 /* Don't send command to remove (start=0) BAID during restart */ 2957 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2958 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2959 baid); 2960 2961 if (baid < 0) { 2962 ret = baid; 2963 goto out_free; 2964 } 2965 2966 if (start) { 2967 mvm->rx_ba_sessions++; 2968 2969 if (!iwl_mvm_has_new_rx_api(mvm)) 2970 return 0; 2971 2972 baid_data->baid = baid; 2973 baid_data->timeout = timeout; 2974 baid_data->last_rx = jiffies; 2975 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2976 timer_setup(&baid_data->session_timer, 2977 iwl_mvm_rx_agg_session_expired, 0); 2978 baid_data->mvm = mvm; 2979 baid_data->tid = tid; 2980 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2981 2982 mvm_sta->tid_to_baid[tid] = baid; 2983 if (timeout) 2984 mod_timer(&baid_data->session_timer, 2985 TU_TO_EXP_TIME(timeout * 2)); 2986 2987 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2988 /* 2989 * protect the BA data with RCU to cover a case where our 2990 * internal RX sync mechanism will timeout (not that it's 2991 * supposed to happen) and we will free the session data while 2992 * RX is being processed in parallel 2993 */ 2994 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2995 mvm_sta->deflink.sta_id, tid, baid); 2996 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2997 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2998 } else { 2999 baid = mvm_sta->tid_to_baid[tid]; 3000 3001 if (mvm->rx_ba_sessions > 0) 3002 /* check that restart flow didn't zero the counter */ 3003 mvm->rx_ba_sessions--; 3004 if (!iwl_mvm_has_new_rx_api(mvm)) 3005 return 0; 3006 3007 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 3008 return -EINVAL; 3009 3010 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 3011 if (WARN_ON(!baid_data)) 3012 return -EINVAL; 3013 3014 /* synchronize all rx queues so we can safely delete */ 3015 iwl_mvm_free_reorder(mvm, baid_data); 3016 timer_shutdown_sync(&baid_data->session_timer); 3017 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 3018 kfree_rcu(baid_data, rcu_head); 3019 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 3020 } 3021 return 0; 3022 3023out_free: 3024 kfree(baid_data); 3025 return ret; 3026} 3027 3028int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3029 int tid, u8 queue, bool start) 3030{ 3031 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3032 struct iwl_mvm_add_sta_cmd cmd = {}; 3033 int ret; 3034 u32 status; 3035 3036 lockdep_assert_held(&mvm->mutex); 3037 3038 if (start) { 3039 mvm_sta->tfd_queue_msk |= BIT(queue); 3040 mvm_sta->tid_disable_agg &= ~BIT(tid); 3041 } else { 3042 /* In DQA-mode the queue isn't removed on agg termination */ 3043 mvm_sta->tid_disable_agg |= BIT(tid); 3044 } 3045 3046 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3047 cmd.sta_id = mvm_sta->deflink.sta_id; 3048 cmd.add_modify = STA_MODE_MODIFY; 3049 if (!iwl_mvm_has_new_tx_api(mvm)) 3050 cmd.modify_mask = STA_MODIFY_QUEUES; 3051 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3052 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3053 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3054 3055 status = ADD_STA_SUCCESS; 3056 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3057 iwl_mvm_add_sta_cmd_size(mvm), 3058 &cmd, &status); 3059 if (ret) 3060 return ret; 3061 3062 switch (status & IWL_ADD_STA_STATUS_MASK) { 3063 case ADD_STA_SUCCESS: 3064 break; 3065 default: 3066 ret = -EIO; 3067 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3068 start ? "start" : "stopp", status); 3069 break; 3070 } 3071 3072 return ret; 3073} 3074 3075const u8 tid_to_mac80211_ac[] = { 3076 IEEE80211_AC_BE, 3077 IEEE80211_AC_BK, 3078 IEEE80211_AC_BK, 3079 IEEE80211_AC_BE, 3080 IEEE80211_AC_VI, 3081 IEEE80211_AC_VI, 3082 IEEE80211_AC_VO, 3083 IEEE80211_AC_VO, 3084 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3085}; 3086 3087static const u8 tid_to_ucode_ac[] = { 3088 AC_BE, 3089 AC_BK, 3090 AC_BK, 3091 AC_BE, 3092 AC_VI, 3093 AC_VI, 3094 AC_VO, 3095 AC_VO, 3096}; 3097 3098int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3099 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3100{ 3101 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3102 struct iwl_mvm_tid_data *tid_data; 3103 u16 normalized_ssn; 3104 u16 txq_id; 3105 int ret; 3106 3107 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3108 return -EINVAL; 3109 3110 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3111 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3112 IWL_ERR(mvm, 3113 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3114 mvmsta->tid_data[tid].state); 3115 return -ENXIO; 3116 } 3117 3118 lockdep_assert_held(&mvm->mutex); 3119 3120 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3121 iwl_mvm_has_new_tx_api(mvm)) { 3122 u8 ac = tid_to_mac80211_ac[tid]; 3123 3124 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3125 if (ret) 3126 return ret; 3127 } 3128 3129 spin_lock_bh(&mvmsta->lock); 3130 3131 /* 3132 * Note the possible cases: 3133 * 1. An enabled TXQ - TXQ needs to become agg'ed 3134 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3135 * it as reserved 3136 */ 3137 txq_id = mvmsta->tid_data[tid].txq_id; 3138 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3139 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3140 IWL_MVM_DQA_MIN_DATA_QUEUE, 3141 IWL_MVM_DQA_MAX_DATA_QUEUE); 3142 if (ret < 0) { 3143 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3144 goto out; 3145 } 3146 3147 txq_id = ret; 3148 3149 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3150 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3151 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3152 ret = -ENXIO; 3153 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3154 tid, IWL_MAX_HW_QUEUES - 1); 3155 goto out; 3156 3157 } else if (unlikely(mvm->queue_info[txq_id].status == 3158 IWL_MVM_QUEUE_SHARED)) { 3159 ret = -ENXIO; 3160 IWL_DEBUG_TX_QUEUES(mvm, 3161 "Can't start tid %d agg on shared queue!\n", 3162 tid); 3163 goto out; 3164 } 3165 3166 IWL_DEBUG_TX_QUEUES(mvm, 3167 "AGG for tid %d will be on queue #%d\n", 3168 tid, txq_id); 3169 3170 tid_data = &mvmsta->tid_data[tid]; 3171 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3172 tid_data->txq_id = txq_id; 3173 *ssn = tid_data->ssn; 3174 3175 IWL_DEBUG_TX_QUEUES(mvm, 3176 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3177 mvmsta->deflink.sta_id, tid, txq_id, 3178 tid_data->ssn, 3179 tid_data->next_reclaimed); 3180 3181 /* 3182 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3183 * to align the wrap around of ssn so we compare relevant values. 3184 */ 3185 normalized_ssn = tid_data->ssn; 3186 if (mvm->trans->trans_cfg->gen2) 3187 normalized_ssn &= 0xff; 3188 3189 if (normalized_ssn == tid_data->next_reclaimed) { 3190 tid_data->state = IWL_AGG_STARTING; 3191 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3192 } else { 3193 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3194 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3195 } 3196 3197out: 3198 spin_unlock_bh(&mvmsta->lock); 3199 3200 return ret; 3201} 3202 3203int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3204 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3205 bool amsdu) 3206{ 3207 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3208 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3209 unsigned int wdg_timeout = 3210 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3211 int queue, ret; 3212 bool alloc_queue = true; 3213 enum iwl_mvm_queue_status queue_status; 3214 u16 ssn; 3215 3216 struct iwl_trans_txq_scd_cfg cfg = { 3217 .sta_id = mvmsta->deflink.sta_id, 3218 .tid = tid, 3219 .frame_limit = buf_size, 3220 .aggregate = true, 3221 }; 3222 3223 /* 3224 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3225 * manager, so this function should never be called in this case. 3226 */ 3227 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3228 return -EINVAL; 3229 3230 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3231 != IWL_MAX_TID_COUNT); 3232 3233 spin_lock_bh(&mvmsta->lock); 3234 ssn = tid_data->ssn; 3235 queue = tid_data->txq_id; 3236 tid_data->state = IWL_AGG_ON; 3237 mvmsta->agg_tids |= BIT(tid); 3238 tid_data->ssn = 0xffff; 3239 tid_data->amsdu_in_ampdu_allowed = amsdu; 3240 spin_unlock_bh(&mvmsta->lock); 3241 3242 if (iwl_mvm_has_new_tx_api(mvm)) { 3243 /* 3244 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3245 * would have failed, so if we are here there is no need to 3246 * allocate a queue. 3247 * However, if aggregation size is different than the default 3248 * size, the scheduler should be reconfigured. 3249 * We cannot do this with the new TX API, so return unsupported 3250 * for now, until it will be offloaded to firmware.. 3251 * Note that if SCD default value changes - this condition 3252 * should be updated as well. 3253 */ 3254 if (buf_size < IWL_FRAME_LIMIT) 3255 return -EOPNOTSUPP; 3256 3257 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3258 if (ret) 3259 return -EIO; 3260 goto out; 3261 } 3262 3263 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3264 3265 queue_status = mvm->queue_info[queue].status; 3266 3267 /* Maybe there is no need to even alloc a queue... */ 3268 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3269 alloc_queue = false; 3270 3271 /* 3272 * Only reconfig the SCD for the queue if the window size has 3273 * changed from current (become smaller) 3274 */ 3275 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3276 /* 3277 * If reconfiguring an existing queue, it first must be 3278 * drained 3279 */ 3280 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3281 BIT(queue)); 3282 if (ret) { 3283 IWL_ERR(mvm, 3284 "Error draining queue before reconfig\n"); 3285 return ret; 3286 } 3287 3288 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3289 mvmsta->deflink.sta_id, tid, 3290 buf_size, ssn); 3291 if (ret) { 3292 IWL_ERR(mvm, 3293 "Error reconfiguring TXQ #%d\n", queue); 3294 return ret; 3295 } 3296 } 3297 3298 if (alloc_queue) 3299 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3300 &cfg, wdg_timeout); 3301 3302 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3303 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3304 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3305 if (ret) 3306 return -EIO; 3307 } 3308 3309 /* No need to mark as reserved */ 3310 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3311 3312out: 3313 /* 3314 * Even though in theory the peer could have different 3315 * aggregation reorder buffer sizes for different sessions, 3316 * our ucode doesn't allow for that and has a global limit 3317 * for each station. Therefore, use the minimum of all the 3318 * aggregation sessions and our default value. 3319 */ 3320 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3321 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3322 buf_size); 3323 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3324 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3325 3326 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3327 sta->addr, tid); 3328 3329 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3330} 3331 3332static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3333 struct iwl_mvm_sta *mvmsta, 3334 struct iwl_mvm_tid_data *tid_data) 3335{ 3336 u16 txq_id = tid_data->txq_id; 3337 3338 lockdep_assert_held(&mvm->mutex); 3339 3340 if (iwl_mvm_has_new_tx_api(mvm)) 3341 return; 3342 3343 /* 3344 * The TXQ is marked as reserved only if no traffic came through yet 3345 * This means no traffic has been sent on this TID (agg'd or not), so 3346 * we no longer have use for the queue. Since it hasn't even been 3347 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3348 * free. 3349 */ 3350 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3351 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3352 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3353 } 3354} 3355 3356int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3357 struct ieee80211_sta *sta, u16 tid) 3358{ 3359 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3360 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3361 u16 txq_id; 3362 int err; 3363 3364 /* 3365 * If mac80211 is cleaning its state, then say that we finished since 3366 * our state has been cleared anyway. 3367 */ 3368 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3369 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3370 return 0; 3371 } 3372 3373 spin_lock_bh(&mvmsta->lock); 3374 3375 txq_id = tid_data->txq_id; 3376 3377 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3378 mvmsta->deflink.sta_id, tid, txq_id, 3379 tid_data->state); 3380 3381 mvmsta->agg_tids &= ~BIT(tid); 3382 3383 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3384 3385 switch (tid_data->state) { 3386 case IWL_AGG_ON: 3387 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3388 3389 IWL_DEBUG_TX_QUEUES(mvm, 3390 "ssn = %d, next_recl = %d\n", 3391 tid_data->ssn, tid_data->next_reclaimed); 3392 3393 tid_data->ssn = 0xffff; 3394 tid_data->state = IWL_AGG_OFF; 3395 spin_unlock_bh(&mvmsta->lock); 3396 3397 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3398 3399 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3400 return 0; 3401 case IWL_AGG_STARTING: 3402 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3403 /* 3404 * The agg session has been stopped before it was set up. This 3405 * can happen when the AddBA timer times out for example. 3406 */ 3407 3408 /* No barriers since we are under mutex */ 3409 lockdep_assert_held(&mvm->mutex); 3410 3411 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3412 tid_data->state = IWL_AGG_OFF; 3413 err = 0; 3414 break; 3415 default: 3416 IWL_ERR(mvm, 3417 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3418 mvmsta->deflink.sta_id, tid, tid_data->state); 3419 IWL_ERR(mvm, 3420 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3421 err = -EINVAL; 3422 } 3423 3424 spin_unlock_bh(&mvmsta->lock); 3425 3426 return err; 3427} 3428 3429int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3430 struct ieee80211_sta *sta, u16 tid) 3431{ 3432 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3433 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3434 u16 txq_id; 3435 enum iwl_mvm_agg_state old_state; 3436 3437 /* 3438 * First set the agg state to OFF to avoid calling 3439 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3440 */ 3441 spin_lock_bh(&mvmsta->lock); 3442 txq_id = tid_data->txq_id; 3443 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3444 mvmsta->deflink.sta_id, tid, txq_id, 3445 tid_data->state); 3446 old_state = tid_data->state; 3447 tid_data->state = IWL_AGG_OFF; 3448 mvmsta->agg_tids &= ~BIT(tid); 3449 spin_unlock_bh(&mvmsta->lock); 3450 3451 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3452 3453 if (old_state >= IWL_AGG_ON) { 3454 iwl_mvm_drain_sta(mvm, mvmsta, true); 3455 3456 if (iwl_mvm_has_new_tx_api(mvm)) { 3457 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3458 BIT(tid))) 3459 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3460 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3461 } else { 3462 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3463 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3464 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3465 } 3466 3467 iwl_mvm_drain_sta(mvm, mvmsta, false); 3468 3469 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3470 } 3471 3472 return 0; 3473} 3474 3475static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3476{ 3477 int i, max = -1, max_offs = -1; 3478 3479 lockdep_assert_held(&mvm->mutex); 3480 3481 /* Pick the unused key offset with the highest 'deleted' 3482 * counter. Every time a key is deleted, all the counters 3483 * are incremented and the one that was just deleted is 3484 * reset to zero. Thus, the highest counter is the one 3485 * that was deleted longest ago. Pick that one. 3486 */ 3487 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3488 if (test_bit(i, mvm->fw_key_table)) 3489 continue; 3490 if (mvm->fw_key_deleted[i] > max) { 3491 max = mvm->fw_key_deleted[i]; 3492 max_offs = i; 3493 } 3494 } 3495 3496 if (max_offs < 0) 3497 return STA_KEY_IDX_INVALID; 3498 3499 return max_offs; 3500} 3501 3502static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3503 struct ieee80211_vif *vif, 3504 struct ieee80211_sta *sta) 3505{ 3506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3507 3508 if (sta) 3509 return iwl_mvm_sta_from_mac80211(sta); 3510 3511 /* 3512 * The device expects GTKs for station interfaces to be 3513 * installed as GTKs for the AP station. If we have no 3514 * station ID, then use AP's station ID. 3515 */ 3516 if (vif->type == NL80211_IFTYPE_STATION && 3517 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3518 u8 sta_id = mvmvif->deflink.ap_sta_id; 3519 3520 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3521 lockdep_is_held(&mvm->mutex)); 3522 3523 /* 3524 * It is possible that the 'sta' parameter is NULL, 3525 * for example when a GTK is removed - the sta_id will then 3526 * be the AP ID, and no station was passed by mac80211. 3527 */ 3528 if (IS_ERR_OR_NULL(sta)) 3529 return NULL; 3530 3531 return iwl_mvm_sta_from_mac80211(sta); 3532 } 3533 3534 return NULL; 3535} 3536 3537static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3538{ 3539 int i; 3540 3541 for (i = len - 1; i >= 0; i--) { 3542 if (pn1[i] > pn2[i]) 3543 return 1; 3544 if (pn1[i] < pn2[i]) 3545 return -1; 3546 } 3547 3548 return 0; 3549} 3550 3551static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3552 u32 sta_id, 3553 struct ieee80211_key_conf *key, bool mcast, 3554 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3555 u8 key_offset, bool mfp) 3556{ 3557 union { 3558 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3559 struct iwl_mvm_add_sta_key_cmd cmd; 3560 } u = {}; 3561 __le16 key_flags; 3562 int ret; 3563 u32 status; 3564 u16 keyidx; 3565 u64 pn = 0; 3566 int i, size; 3567 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3568 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3569 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3570 new_api ? 2 : 1); 3571 3572 if (sta_id == IWL_MVM_INVALID_STA) 3573 return -EINVAL; 3574 3575 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3576 STA_KEY_FLG_KEYID_MSK; 3577 key_flags = cpu_to_le16(keyidx); 3578 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3579 3580 if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU) 3581 key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP); 3582 3583 switch (key->cipher) { 3584 case WLAN_CIPHER_SUITE_TKIP: 3585 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3586 if (api_ver >= 2) { 3587 memcpy((void *)&u.cmd.tx_mic_key, 3588 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3589 IWL_MIC_KEY_SIZE); 3590 3591 memcpy((void *)&u.cmd.rx_mic_key, 3592 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3593 IWL_MIC_KEY_SIZE); 3594 pn = atomic64_read(&key->tx_pn); 3595 3596 } else { 3597 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3598 for (i = 0; i < 5; i++) 3599 u.cmd_v1.tkip_rx_ttak[i] = 3600 cpu_to_le16(tkip_p1k[i]); 3601 } 3602 memcpy(u.cmd.common.key, key->key, key->keylen); 3603 break; 3604 case WLAN_CIPHER_SUITE_CCMP: 3605 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3606 memcpy(u.cmd.common.key, key->key, key->keylen); 3607 if (api_ver >= 2) 3608 pn = atomic64_read(&key->tx_pn); 3609 break; 3610 case WLAN_CIPHER_SUITE_WEP104: 3611 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3612 fallthrough; 3613 case WLAN_CIPHER_SUITE_WEP40: 3614 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3615 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3616 break; 3617 case WLAN_CIPHER_SUITE_GCMP_256: 3618 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3619 fallthrough; 3620 case WLAN_CIPHER_SUITE_GCMP: 3621 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3622 memcpy(u.cmd.common.key, key->key, key->keylen); 3623 if (api_ver >= 2) 3624 pn = atomic64_read(&key->tx_pn); 3625 break; 3626 default: 3627 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3628 memcpy(u.cmd.common.key, key->key, key->keylen); 3629 } 3630 3631 if (mcast) 3632 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3633 if (mfp) 3634 key_flags |= cpu_to_le16(STA_KEY_MFP); 3635 3636 u.cmd.common.key_offset = key_offset; 3637 u.cmd.common.key_flags = key_flags; 3638 u.cmd.common.sta_id = sta_id; 3639 3640 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3641 i = 0; 3642 else 3643 i = -1; 3644 3645 for (; i < IEEE80211_NUM_TIDS; i++) { 3646 struct ieee80211_key_seq seq = {}; 3647 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3648 int rx_pn_len = 8; 3649 /* there's a hole at 2/3 in FW format depending on version */ 3650 int hole = api_ver >= 3 ? 0 : 2; 3651 3652 ieee80211_get_key_rx_seq(key, i, &seq); 3653 3654 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3655 rx_pn[0] = seq.tkip.iv16; 3656 rx_pn[1] = seq.tkip.iv16 >> 8; 3657 rx_pn[2 + hole] = seq.tkip.iv32; 3658 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3659 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3660 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3661 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3662 rx_pn = seq.hw.seq; 3663 rx_pn_len = seq.hw.seq_len; 3664 } else { 3665 rx_pn[0] = seq.ccmp.pn[0]; 3666 rx_pn[1] = seq.ccmp.pn[1]; 3667 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3668 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3669 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3670 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3671 } 3672 3673 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3674 rx_pn_len) > 0) 3675 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3676 rx_pn_len); 3677 } 3678 3679 if (api_ver >= 2) { 3680 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3681 size = sizeof(u.cmd); 3682 } else { 3683 size = sizeof(u.cmd_v1); 3684 } 3685 3686 status = ADD_STA_SUCCESS; 3687 if (cmd_flags & CMD_ASYNC) 3688 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3689 &u.cmd); 3690 else 3691 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3692 &u.cmd, &status); 3693 3694 switch (status) { 3695 case ADD_STA_SUCCESS: 3696 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3697 break; 3698 default: 3699 ret = -EIO; 3700 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3701 break; 3702 } 3703 3704 return ret; 3705} 3706 3707static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3708 struct ieee80211_key_conf *keyconf, 3709 u8 sta_id, bool remove_key) 3710{ 3711 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3712 3713 /* verify the key details match the required command's expectations */ 3714 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3715 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3716 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3717 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3718 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3719 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3720 return -EINVAL; 3721 3722 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3723 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3724 return -EINVAL; 3725 3726 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3727 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3728 3729 if (remove_key) { 3730 /* This is a valid situation for IGTK */ 3731 if (sta_id == IWL_MVM_INVALID_STA) 3732 return 0; 3733 3734 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3735 } else { 3736 struct ieee80211_key_seq seq; 3737 const u8 *pn; 3738 3739 switch (keyconf->cipher) { 3740 case WLAN_CIPHER_SUITE_AES_CMAC: 3741 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3742 break; 3743 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3744 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3745 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3746 break; 3747 default: 3748 return -EINVAL; 3749 } 3750 3751 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3752 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3753 igtk_cmd.ctrl_flags |= 3754 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3755 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3756 pn = seq.aes_cmac.pn; 3757 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3758 ((u64) pn[4] << 8) | 3759 ((u64) pn[3] << 16) | 3760 ((u64) pn[2] << 24) | 3761 ((u64) pn[1] << 32) | 3762 ((u64) pn[0] << 40)); 3763 } 3764 3765 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3766 remove_key ? "removing" : "installing", 3767 keyconf->keyidx >= 6 ? "B" : "", 3768 keyconf->keyidx, igtk_cmd.sta_id); 3769 3770 if (!iwl_mvm_has_new_rx_api(mvm)) { 3771 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3772 .ctrl_flags = igtk_cmd.ctrl_flags, 3773 .key_id = igtk_cmd.key_id, 3774 .sta_id = igtk_cmd.sta_id, 3775 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3776 }; 3777 3778 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3779 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3780 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3781 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3782 } 3783 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3784 sizeof(igtk_cmd), &igtk_cmd); 3785} 3786 3787 3788static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3789 struct ieee80211_vif *vif, 3790 struct ieee80211_sta *sta) 3791{ 3792 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3793 3794 if (sta) 3795 return sta->addr; 3796 3797 if (vif->type == NL80211_IFTYPE_STATION && 3798 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3799 u8 sta_id = mvmvif->deflink.ap_sta_id; 3800 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3801 lockdep_is_held(&mvm->mutex)); 3802 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3803 return NULL; 3804 3805 return sta->addr; 3806 } 3807 3808 3809 return NULL; 3810} 3811 3812static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3813 struct ieee80211_vif *vif, 3814 struct ieee80211_sta *sta, 3815 struct ieee80211_key_conf *keyconf, 3816 u8 key_offset, 3817 bool mcast) 3818{ 3819 const u8 *addr; 3820 struct ieee80211_key_seq seq; 3821 u16 p1k[5]; 3822 u32 sta_id; 3823 bool mfp = false; 3824 3825 if (sta) { 3826 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3827 3828 sta_id = mvm_sta->deflink.sta_id; 3829 mfp = sta->mfp; 3830 } else if (vif->type == NL80211_IFTYPE_AP && 3831 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3832 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3833 3834 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3835 } else { 3836 IWL_ERR(mvm, "Failed to find station id\n"); 3837 return -EINVAL; 3838 } 3839 3840 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3841 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3842 if (!addr) { 3843 IWL_ERR(mvm, "Failed to find mac address\n"); 3844 return -EINVAL; 3845 } 3846 3847 /* get phase 1 key from mac80211 */ 3848 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3849 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3850 3851 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3852 seq.tkip.iv32, p1k, 0, key_offset, 3853 mfp); 3854 } 3855 3856 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3857 0, NULL, 0, key_offset, mfp); 3858} 3859 3860int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3861 struct ieee80211_vif *vif, 3862 struct ieee80211_sta *sta, 3863 struct ieee80211_key_conf *keyconf, 3864 u8 key_offset) 3865{ 3866 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3867 struct iwl_mvm_sta *mvm_sta; 3868 u8 sta_id = IWL_MVM_INVALID_STA; 3869 int ret; 3870 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3871 3872 lockdep_assert_held(&mvm->mutex); 3873 3874 if (vif->type != NL80211_IFTYPE_AP || 3875 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3876 /* Get the station id from the mvm local station table */ 3877 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3878 if (!mvm_sta) { 3879 IWL_ERR(mvm, "Failed to find station\n"); 3880 return -EINVAL; 3881 } 3882 sta_id = mvm_sta->deflink.sta_id; 3883 3884 /* 3885 * It is possible that the 'sta' parameter is NULL, and thus 3886 * there is a need to retrieve the sta from the local station 3887 * table. 3888 */ 3889 if (!sta) { 3890 sta = rcu_dereference_protected( 3891 mvm->fw_id_to_mac_id[sta_id], 3892 lockdep_is_held(&mvm->mutex)); 3893 if (IS_ERR_OR_NULL(sta)) { 3894 IWL_ERR(mvm, "Invalid station id\n"); 3895 return -EINVAL; 3896 } 3897 } 3898 3899 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3900 return -EINVAL; 3901 } else { 3902 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3903 3904 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3905 } 3906 3907 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3908 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3909 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3910 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3911 goto end; 3912 } 3913 3914 /* If the key_offset is not pre-assigned, we need to find a 3915 * new offset to use. In normal cases, the offset is not 3916 * pre-assigned, but during HW_RESTART we want to reuse the 3917 * same indices, so we pass them when this function is called. 3918 * 3919 * In D3 entry, we need to hardcoded the indices (because the 3920 * firmware hardcodes the PTK offset to 0). In this case, we 3921 * need to make sure we don't overwrite the hw_key_idx in the 3922 * keyconf structure, because otherwise we cannot configure 3923 * the original ones back when resuming. 3924 */ 3925 if (key_offset == STA_KEY_IDX_INVALID) { 3926 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3927 if (key_offset == STA_KEY_IDX_INVALID) 3928 return -ENOSPC; 3929 keyconf->hw_key_idx = key_offset; 3930 } 3931 3932 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3933 if (ret) 3934 goto end; 3935 3936 /* 3937 * For WEP, the same key is used for multicast and unicast. Upload it 3938 * again, using the same key offset, and now pointing the other one 3939 * to the same key slot (offset). 3940 * If this fails, remove the original as well. 3941 */ 3942 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3943 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3944 sta) { 3945 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3946 key_offset, !mcast); 3947 if (ret) { 3948 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3949 goto end; 3950 } 3951 } 3952 3953 __set_bit(key_offset, mvm->fw_key_table); 3954 3955end: 3956 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3957 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3958 sta ? sta->addr : zero_addr, ret); 3959 return ret; 3960} 3961 3962int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3963 struct ieee80211_vif *vif, 3964 struct ieee80211_sta *sta, 3965 struct ieee80211_key_conf *keyconf) 3966{ 3967 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3968 struct iwl_mvm_sta *mvm_sta; 3969 u8 sta_id = IWL_MVM_INVALID_STA; 3970 int ret, i; 3971 3972 lockdep_assert_held(&mvm->mutex); 3973 3974 /* Get the station from the mvm local station table */ 3975 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3976 if (mvm_sta) 3977 sta_id = mvm_sta->deflink.sta_id; 3978 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3979 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3980 3981 3982 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3983 keyconf->keyidx, sta_id); 3984 3985 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3986 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3987 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3988 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3989 3990 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3991 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3992 keyconf->hw_key_idx); 3993 return -ENOENT; 3994 } 3995 3996 /* track which key was deleted last */ 3997 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3998 if (mvm->fw_key_deleted[i] < U8_MAX) 3999 mvm->fw_key_deleted[i]++; 4000 } 4001 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 4002 4003 if (sta && !mvm_sta) { 4004 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 4005 return 0; 4006 } 4007 4008 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 4009 if (ret) 4010 return ret; 4011 4012 /* delete WEP key twice to get rid of (now useless) offset */ 4013 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 4014 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 4015 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 4016 4017 return ret; 4018} 4019 4020void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 4021 struct ieee80211_vif *vif, 4022 struct ieee80211_key_conf *keyconf, 4023 struct ieee80211_sta *sta, u32 iv32, 4024 u16 *phase1key) 4025{ 4026 struct iwl_mvm_sta *mvm_sta; 4027 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4028 bool mfp = sta ? sta->mfp : false; 4029 4030 rcu_read_lock(); 4031 4032 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4033 if (WARN_ON_ONCE(!mvm_sta)) 4034 goto unlock; 4035 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4036 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4037 mfp); 4038 4039 unlock: 4040 rcu_read_unlock(); 4041} 4042 4043void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4044 struct ieee80211_sta *sta) 4045{ 4046 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4047 struct iwl_mvm_add_sta_cmd cmd = { 4048 .add_modify = STA_MODE_MODIFY, 4049 .sta_id = mvmsta->deflink.sta_id, 4050 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4051 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4052 }; 4053 int ret; 4054 4055 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4056 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4057 if (ret) 4058 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4059} 4060 4061void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4062 struct ieee80211_sta *sta, 4063 enum ieee80211_frame_release_type reason, 4064 u16 cnt, u16 tids, bool more_data, 4065 bool single_sta_queue) 4066{ 4067 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4068 struct iwl_mvm_add_sta_cmd cmd = { 4069 .add_modify = STA_MODE_MODIFY, 4070 .sta_id = mvmsta->deflink.sta_id, 4071 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4072 .sleep_tx_count = cpu_to_le16(cnt), 4073 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4074 }; 4075 int tid, ret; 4076 unsigned long _tids = tids; 4077 4078 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4079 * Note that this field is reserved and unused by firmware not 4080 * supporting GO uAPSD, so it's safe to always do this. 4081 */ 4082 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4083 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4084 4085 /* If we're releasing frames from aggregation or dqa queues then check 4086 * if all the queues that we're releasing frames from, combined, have: 4087 * - more frames than the service period, in which case more_data 4088 * needs to be set 4089 * - fewer than 'cnt' frames, in which case we need to adjust the 4090 * firmware command (but do that unconditionally) 4091 */ 4092 if (single_sta_queue) { 4093 int remaining = cnt; 4094 int sleep_tx_count; 4095 4096 spin_lock_bh(&mvmsta->lock); 4097 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4098 struct iwl_mvm_tid_data *tid_data; 4099 u16 n_queued; 4100 4101 tid_data = &mvmsta->tid_data[tid]; 4102 4103 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4104 if (n_queued > remaining) { 4105 more_data = true; 4106 remaining = 0; 4107 break; 4108 } 4109 remaining -= n_queued; 4110 } 4111 sleep_tx_count = cnt - remaining; 4112 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4113 mvmsta->sleep_tx_count = sleep_tx_count; 4114 spin_unlock_bh(&mvmsta->lock); 4115 4116 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4117 if (WARN_ON(cnt - remaining == 0)) { 4118 ieee80211_sta_eosp(sta); 4119 return; 4120 } 4121 } 4122 4123 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4124 if (more_data) 4125 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4126 4127 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4128 mvmsta->next_status_eosp = true; 4129 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4130 } else { 4131 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4132 } 4133 4134 /* block the Tx queues until the FW updated the sleep Tx count */ 4135 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4136 CMD_ASYNC | CMD_BLOCK_TXQS, 4137 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4138 if (ret) 4139 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4140} 4141 4142void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4143 struct iwl_rx_cmd_buffer *rxb) 4144{ 4145 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4146 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4147 struct ieee80211_sta *sta; 4148 u32 sta_id = le32_to_cpu(notif->sta_id); 4149 4150 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4151 return; 4152 4153 rcu_read_lock(); 4154 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4155 if (!IS_ERR_OR_NULL(sta)) 4156 ieee80211_sta_eosp(sta); 4157 rcu_read_unlock(); 4158} 4159 4160void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4161 struct iwl_mvm_sta *mvmsta, 4162 bool disable) 4163{ 4164 struct iwl_mvm_add_sta_cmd cmd = { 4165 .add_modify = STA_MODE_MODIFY, 4166 .sta_id = mvmsta->deflink.sta_id, 4167 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4168 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4169 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4170 }; 4171 int ret; 4172 4173 if (mvm->mld_api_is_used) { 4174 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4175 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4176 return; 4177 } 4178 4179 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4180 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4181 if (ret) 4182 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4183} 4184 4185void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4186 struct ieee80211_sta *sta, 4187 bool disable) 4188{ 4189 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4190 4191 if (mvm->mld_api_is_used) { 4192 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4193 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4194 return; 4195 } 4196 4197 spin_lock_bh(&mvm_sta->lock); 4198 4199 if (mvm_sta->disable_tx == disable) { 4200 spin_unlock_bh(&mvm_sta->lock); 4201 return; 4202 } 4203 4204 mvm_sta->disable_tx = disable; 4205 4206 /* 4207 * If sta PS state is handled by mac80211, tell it to start/stop 4208 * queuing tx for this station. 4209 */ 4210 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4211 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4212 4213 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4214 4215 spin_unlock_bh(&mvm_sta->lock); 4216} 4217 4218static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4219 struct iwl_mvm_vif *mvmvif, 4220 struct iwl_mvm_int_sta *sta, 4221 bool disable) 4222{ 4223 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4224 struct iwl_mvm_add_sta_cmd cmd = { 4225 .add_modify = STA_MODE_MODIFY, 4226 .sta_id = sta->sta_id, 4227 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4228 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4229 .mac_id_n_color = cpu_to_le32(id), 4230 }; 4231 int ret; 4232 4233 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4234 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4235 if (ret) 4236 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4237} 4238 4239void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4240 struct iwl_mvm_vif *mvmvif, 4241 bool disable) 4242{ 4243 struct ieee80211_sta *sta; 4244 struct iwl_mvm_sta *mvm_sta; 4245 int i; 4246 4247 if (mvm->mld_api_is_used) { 4248 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4249 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, 4250 disable); 4251 return; 4252 } 4253 4254 rcu_read_lock(); 4255 4256 /* Block/unblock all the stations of the given mvmvif */ 4257 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4258 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4259 if (IS_ERR_OR_NULL(sta)) 4260 continue; 4261 4262 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4263 if (mvm_sta->mac_id_n_color != 4264 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4265 continue; 4266 4267 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4268 } 4269 4270 rcu_read_unlock(); 4271 4272 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4273 return; 4274 4275 /* Need to block/unblock also multicast station */ 4276 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4277 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4278 &mvmvif->deflink.mcast_sta, 4279 disable); 4280 4281 /* 4282 * Only unblock the broadcast station (FW blocks it for immediate 4283 * quiet, not the driver) 4284 */ 4285 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4286 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4287 &mvmvif->deflink.bcast_sta, 4288 disable); 4289} 4290 4291void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4292{ 4293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4294 struct iwl_mvm_sta *mvmsta; 4295 4296 rcu_read_lock(); 4297 4298 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4299 4300 if (mvmsta) 4301 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4302 4303 rcu_read_unlock(); 4304} 4305 4306u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4307{ 4308 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4309 4310 /* 4311 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4312 * to align the wrap around of ssn so we compare relevant values. 4313 */ 4314 if (mvm->trans->trans_cfg->gen2) 4315 sn &= 0xff; 4316 4317 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4318} 4319 4320int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4321 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4322 u8 *key, u32 key_len, 4323 struct ieee80211_key_conf *keyconf) 4324{ 4325 int ret; 4326 u16 queue; 4327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4328 unsigned int wdg_timeout = 4329 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 4330 bool mld = iwl_mvm_has_mld_api(mvm->fw); 4331 u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK; 4332 4333 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4334 NL80211_IFTYPE_UNSPECIFIED, type); 4335 if (ret) 4336 return ret; 4337 4338 if (mld) 4339 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr, 4340 mvmvif->deflink.fw_link_id, 4341 &queue, 4342 IWL_MAX_TID_COUNT, 4343 &wdg_timeout); 4344 else 4345 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, 4346 mvmvif->color, addr, sta, 4347 &queue, 4348 IWL_MVM_TX_FIFO_BE); 4349 if (ret) 4350 goto out; 4351 4352 keyconf->cipher = cipher; 4353 memcpy(keyconf->key, key, key_len); 4354 keyconf->keylen = key_len; 4355 keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE; 4356 4357 if (mld) { 4358 /* The MFP flag is set according to the station mfp field. Since 4359 * we don't have a station, set it manually. 4360 */ 4361 u32 key_flags = 4362 iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) | 4363 IWL_SEC_KEY_FLAG_MFP; 4364 u32 sta_mask = BIT(sta->sta_id); 4365 4366 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf); 4367 } else { 4368 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4369 0, NULL, 0, 0, true); 4370 } 4371 4372out: 4373 if (ret) 4374 iwl_mvm_dealloc_int_sta(mvm, sta); 4375 return ret; 4376} 4377 4378void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4379 struct ieee80211_vif *vif, 4380 u32 id) 4381{ 4382 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4383 .id = cpu_to_le32(id), 4384 }; 4385 int ret; 4386 4387 ret = iwl_mvm_send_cmd_pdu(mvm, 4388 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4389 CMD_ASYNC, 4390 sizeof(cancel_channel_switch_cmd), 4391 &cancel_channel_switch_cmd); 4392 if (ret) 4393 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4394} 4395