1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 28 { 29 int sta_id; 30 u32 reserved_ids = 0; 31 32 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 33 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 34 35 lockdep_assert_held(&mvm->mutex); 36 37 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 38 if (iftype != NL80211_IFTYPE_STATION) 39 reserved_ids = BIT(0); 40 41 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 42 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 43 if (BIT(sta_id) & reserved_ids) 44 continue; 45 46 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 47 lockdep_is_held(&mvm->mutex))) 48 return sta_id; 49 } 50 return IWL_MVM_INVALID_STA; 51 } 52 53 /* Calculate the ampdu density and max size */ 54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 55 struct ieee80211_bss_conf *link_conf, 56 u32 *_agg_size) 57 { 58 u32 agg_size = 0, mpdu_dens = 0; 59 60 if (WARN_ON(!link_sta)) 61 return 0; 62 63 if (link_sta->ht_cap.ht_supported) 64 mpdu_dens = link_sta->ht_cap.ampdu_density; 65 66 if (link_conf->chandef.chan->band == 67 NL80211_BAND_6GHZ) { 68 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 69 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 70 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 71 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 72 } else if (link_sta->vht_cap.vht_supported) { 73 agg_size = link_sta->vht_cap.cap & 74 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 75 agg_size >>= 76 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 77 } else if (link_sta->ht_cap.ht_supported) { 78 agg_size = link_sta->ht_cap.ampdu_factor; 79 } 80 81 /* D6.0 10.12.2 A-MPDU length limit rules 82 * A STA indicates the maximum length of the A-MPDU preEOF padding 83 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 84 * Exponent field in its HT Capabilities, VHT Capabilities, 85 * and HE 6 GHz Band Capabilities elements (if present) and the 86 * Maximum AMPDU Length Exponent Extension field in its HE 87 * Capabilities element 88 */ 89 if (link_sta->he_cap.has_he) 90 agg_size += 91 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 92 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 93 94 /* Limit to max A-MPDU supported by FW */ 95 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 96 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 97 STA_FLG_MAX_AGG_SIZE_SHIFT); 98 99 *_agg_size = agg_size; 100 return mpdu_dens; 101 } 102 103 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 104 { 105 u8 uapsd_acs = 0; 106 107 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 108 uapsd_acs |= BIT(AC_BK); 109 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 110 uapsd_acs |= BIT(AC_BE); 111 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 112 uapsd_acs |= BIT(AC_VI); 113 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 114 uapsd_acs |= BIT(AC_VO); 115 116 return uapsd_acs | uapsd_acs << 4; 117 } 118 119 /* send station add/update command to firmware */ 120 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 121 bool update, unsigned int flags) 122 { 123 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 124 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 125 .sta_id = mvm_sta->deflink.sta_id, 126 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 127 .add_modify = update ? 1 : 0, 128 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 129 STA_FLG_MIMO_EN_MSK | 130 STA_FLG_RTS_MIMO_PROT), 131 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 132 }; 133 int ret; 134 u32 status; 135 u32 agg_size = 0, mpdu_dens = 0; 136 137 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 138 add_sta_cmd.station_type = mvm_sta->sta_type; 139 140 if (!update || (flags & STA_MODIFY_QUEUES)) { 141 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 142 143 if (!iwl_mvm_has_new_tx_api(mvm)) { 144 add_sta_cmd.tfd_queue_msk = 145 cpu_to_le32(mvm_sta->tfd_queue_msk); 146 147 if (flags & STA_MODIFY_QUEUES) 148 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 149 } else { 150 WARN_ON(flags & STA_MODIFY_QUEUES); 151 } 152 } 153 154 switch (sta->deflink.bandwidth) { 155 case IEEE80211_STA_RX_BW_320: 156 case IEEE80211_STA_RX_BW_160: 157 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 158 fallthrough; 159 case IEEE80211_STA_RX_BW_80: 160 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 161 fallthrough; 162 case IEEE80211_STA_RX_BW_40: 163 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 164 fallthrough; 165 case IEEE80211_STA_RX_BW_20: 166 if (sta->deflink.ht_cap.ht_supported) 167 add_sta_cmd.station_flags |= 168 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 169 break; 170 } 171 172 switch (sta->deflink.rx_nss) { 173 case 1: 174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 175 break; 176 case 2: 177 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 178 break; 179 case 3 ... 8: 180 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 181 break; 182 } 183 184 switch (sta->deflink.smps_mode) { 185 case IEEE80211_SMPS_AUTOMATIC: 186 case IEEE80211_SMPS_NUM_MODES: 187 WARN_ON(1); 188 break; 189 case IEEE80211_SMPS_STATIC: 190 /* override NSS */ 191 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 192 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 193 break; 194 case IEEE80211_SMPS_DYNAMIC: 195 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 196 break; 197 case IEEE80211_SMPS_OFF: 198 /* nothing */ 199 break; 200 } 201 202 if (sta->deflink.ht_cap.ht_supported || 203 mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) 204 add_sta_cmd.station_flags_msk |= 205 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 206 STA_FLG_AGG_MPDU_DENS_MSK); 207 208 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 209 &mvm_sta->vif->bss_conf, 210 &agg_size); 211 add_sta_cmd.station_flags |= 212 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 213 add_sta_cmd.station_flags |= 214 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 215 216 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 217 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 218 219 if (sta->wme) { 220 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 221 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 222 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 223 } 224 225 status = ADD_STA_SUCCESS; 226 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 227 iwl_mvm_add_sta_cmd_size(mvm), 228 &add_sta_cmd, &status); 229 if (ret) 230 return ret; 231 232 switch (status & IWL_ADD_STA_STATUS_MASK) { 233 case ADD_STA_SUCCESS: 234 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 235 break; 236 default: 237 ret = -EIO; 238 IWL_ERR(mvm, "ADD_STA failed\n"); 239 break; 240 } 241 242 return ret; 243 } 244 245 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 246 { 247 struct iwl_mvm_baid_data *data = 248 from_timer(data, t, session_timer); 249 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 250 struct iwl_mvm_baid_data *ba_data; 251 struct ieee80211_sta *sta; 252 struct iwl_mvm_sta *mvm_sta; 253 unsigned long timeout; 254 unsigned int sta_id; 255 256 rcu_read_lock(); 257 258 ba_data = rcu_dereference(*rcu_ptr); 259 260 if (WARN_ON(!ba_data)) 261 goto unlock; 262 263 if (!ba_data->timeout) 264 goto unlock; 265 266 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 267 if (time_is_after_jiffies(timeout)) { 268 mod_timer(&ba_data->session_timer, timeout); 269 goto unlock; 270 } 271 272 /* Timer expired */ 273 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 274 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 275 276 /* 277 * sta should be valid unless the following happens: 278 * The firmware asserts which triggers a reconfig flow, but 279 * the reconfig fails before we set the pointer to sta into 280 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 281 * A-MDPU and hence the timer continues to run. Then, the 282 * timer expires and sta is NULL. 283 */ 284 if (!sta) 285 goto unlock; 286 287 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 288 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 289 sta->addr, ba_data->tid); 290 unlock: 291 rcu_read_unlock(); 292 } 293 294 /* Disable aggregations for a bitmap of TIDs for a given station */ 295 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 296 unsigned long disable_agg_tids, 297 bool remove_queue) 298 { 299 struct iwl_mvm_add_sta_cmd cmd = {}; 300 struct ieee80211_sta *sta; 301 struct iwl_mvm_sta *mvmsta; 302 u32 status; 303 u8 sta_id; 304 305 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 306 return -EINVAL; 307 308 sta_id = mvm->queue_info[queue].ra_sta_id; 309 310 rcu_read_lock(); 311 312 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 313 314 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 315 rcu_read_unlock(); 316 return -EINVAL; 317 } 318 319 mvmsta = iwl_mvm_sta_from_mac80211(sta); 320 321 mvmsta->tid_disable_agg |= disable_agg_tids; 322 323 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 324 cmd.sta_id = mvmsta->deflink.sta_id; 325 cmd.add_modify = STA_MODE_MODIFY; 326 cmd.modify_mask = STA_MODIFY_QUEUES; 327 if (disable_agg_tids) 328 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 329 if (remove_queue) 330 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 331 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 332 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 333 334 rcu_read_unlock(); 335 336 /* Notify FW of queue removal from the STA queues */ 337 status = ADD_STA_SUCCESS; 338 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 339 iwl_mvm_add_sta_cmd_size(mvm), 340 &cmd, &status); 341 } 342 343 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 344 int sta_id, u16 *queueptr, u8 tid) 345 { 346 int queue = *queueptr; 347 struct iwl_scd_txq_cfg_cmd cmd = { 348 .scd_queue = queue, 349 .action = SCD_CFG_DISABLE_QUEUE, 350 }; 351 int ret; 352 353 lockdep_assert_held(&mvm->mutex); 354 355 if (iwl_mvm_has_new_tx_api(mvm)) { 356 if (mvm->sta_remove_requires_queue_remove) { 357 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 358 SCD_QUEUE_CONFIG_CMD); 359 struct iwl_scd_queue_cfg_cmd remove_cmd = { 360 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 361 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 362 }; 363 364 if (tid == IWL_MAX_TID_COUNT) 365 tid = IWL_MGMT_TID; 366 367 remove_cmd.u.remove.tid = cpu_to_le32(tid); 368 369 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 370 sizeof(remove_cmd), 371 &remove_cmd); 372 } else { 373 ret = 0; 374 } 375 376 iwl_trans_txq_free(mvm->trans, queue); 377 *queueptr = IWL_MVM_INVALID_QUEUE; 378 379 return ret; 380 } 381 382 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 383 return 0; 384 385 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 386 387 cmd.action = mvm->queue_info[queue].tid_bitmap ? 388 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 389 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 390 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 391 392 IWL_DEBUG_TX_QUEUES(mvm, 393 "Disabling TXQ #%d tids=0x%x\n", 394 queue, 395 mvm->queue_info[queue].tid_bitmap); 396 397 /* If the queue is still enabled - nothing left to do in this func */ 398 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 399 return 0; 400 401 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 402 cmd.tid = mvm->queue_info[queue].txq_tid; 403 404 /* Make sure queue info is correct even though we overwrite it */ 405 WARN(mvm->queue_info[queue].tid_bitmap, 406 "TXQ #%d info out-of-sync - tids=0x%x\n", 407 queue, mvm->queue_info[queue].tid_bitmap); 408 409 /* If we are here - the queue is freed and we can zero out these vals */ 410 mvm->queue_info[queue].tid_bitmap = 0; 411 412 if (sta) { 413 struct iwl_mvm_txq *mvmtxq = 414 iwl_mvm_txq_from_tid(sta, tid); 415 416 spin_lock_bh(&mvm->add_stream_lock); 417 list_del_init(&mvmtxq->list); 418 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 419 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 420 spin_unlock_bh(&mvm->add_stream_lock); 421 } 422 423 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 424 mvm->queue_info[queue].reserved = false; 425 426 iwl_trans_txq_disable(mvm->trans, queue, false); 427 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 428 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 429 430 if (ret) 431 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 432 queue, ret); 433 return ret; 434 } 435 436 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 437 { 438 struct ieee80211_sta *sta; 439 struct iwl_mvm_sta *mvmsta; 440 unsigned long tid_bitmap; 441 unsigned long agg_tids = 0; 442 u8 sta_id; 443 int tid; 444 445 lockdep_assert_held(&mvm->mutex); 446 447 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 448 return -EINVAL; 449 450 sta_id = mvm->queue_info[queue].ra_sta_id; 451 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 452 453 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 454 lockdep_is_held(&mvm->mutex)); 455 456 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 457 return -EINVAL; 458 459 mvmsta = iwl_mvm_sta_from_mac80211(sta); 460 461 spin_lock_bh(&mvmsta->lock); 462 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 463 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 464 agg_tids |= BIT(tid); 465 } 466 spin_unlock_bh(&mvmsta->lock); 467 468 return agg_tids; 469 } 470 471 /* 472 * Remove a queue from a station's resources. 473 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 474 * doesn't disable the queue 475 */ 476 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 477 { 478 struct ieee80211_sta *sta; 479 struct iwl_mvm_sta *mvmsta; 480 unsigned long tid_bitmap; 481 unsigned long disable_agg_tids = 0; 482 u8 sta_id; 483 int tid; 484 485 lockdep_assert_held(&mvm->mutex); 486 487 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 488 return -EINVAL; 489 490 sta_id = mvm->queue_info[queue].ra_sta_id; 491 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 492 493 rcu_read_lock(); 494 495 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 496 497 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 498 rcu_read_unlock(); 499 return 0; 500 } 501 502 mvmsta = iwl_mvm_sta_from_mac80211(sta); 503 504 spin_lock_bh(&mvmsta->lock); 505 /* Unmap MAC queues and TIDs from this queue */ 506 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 507 struct iwl_mvm_txq *mvmtxq = 508 iwl_mvm_txq_from_tid(sta, tid); 509 510 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 511 disable_agg_tids |= BIT(tid); 512 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 513 514 spin_lock_bh(&mvm->add_stream_lock); 515 list_del_init(&mvmtxq->list); 516 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 517 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 518 spin_unlock_bh(&mvm->add_stream_lock); 519 } 520 521 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 522 spin_unlock_bh(&mvmsta->lock); 523 524 rcu_read_unlock(); 525 526 /* 527 * The TX path may have been using this TXQ_ID from the tid_data, 528 * so make sure it's no longer running so that we can safely reuse 529 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 530 * above, but nothing guarantees we've stopped using them. Thus, 531 * without this, we could get to iwl_mvm_disable_txq() and remove 532 * the queue while still sending frames to it. 533 */ 534 synchronize_net(); 535 536 return disable_agg_tids; 537 } 538 539 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 540 struct ieee80211_sta *old_sta, 541 u8 new_sta_id) 542 { 543 struct iwl_mvm_sta *mvmsta; 544 u8 sta_id, tid; 545 unsigned long disable_agg_tids = 0; 546 bool same_sta; 547 u16 queue_tmp = queue; 548 int ret; 549 550 lockdep_assert_held(&mvm->mutex); 551 552 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 553 return -EINVAL; 554 555 sta_id = mvm->queue_info[queue].ra_sta_id; 556 tid = mvm->queue_info[queue].txq_tid; 557 558 same_sta = sta_id == new_sta_id; 559 560 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 561 if (WARN_ON(!mvmsta)) 562 return -EINVAL; 563 564 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 565 /* Disable the queue */ 566 if (disable_agg_tids) 567 iwl_mvm_invalidate_sta_queue(mvm, queue, 568 disable_agg_tids, false); 569 570 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 571 if (ret) { 572 IWL_ERR(mvm, 573 "Failed to free inactive queue %d (ret=%d)\n", 574 queue, ret); 575 576 return ret; 577 } 578 579 /* If TXQ is allocated to another STA, update removal in FW */ 580 if (!same_sta) 581 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 582 583 return 0; 584 } 585 586 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 587 unsigned long tfd_queue_mask, u8 ac) 588 { 589 int queue = 0; 590 u8 ac_to_queue[IEEE80211_NUM_ACS]; 591 int i; 592 593 /* 594 * This protects us against grabbing a queue that's being reconfigured 595 * by the inactivity checker. 596 */ 597 lockdep_assert_held(&mvm->mutex); 598 599 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 600 return -EINVAL; 601 602 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 603 604 /* See what ACs the existing queues for this STA have */ 605 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 606 /* Only DATA queues can be shared */ 607 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 608 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 609 continue; 610 611 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 612 } 613 614 /* 615 * The queue to share is chosen only from DATA queues as follows (in 616 * descending priority): 617 * 1. An AC_BE queue 618 * 2. Same AC queue 619 * 3. Highest AC queue that is lower than new AC 620 * 4. Any existing AC (there always is at least 1 DATA queue) 621 */ 622 623 /* Priority 1: An AC_BE queue */ 624 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 625 queue = ac_to_queue[IEEE80211_AC_BE]; 626 /* Priority 2: Same AC queue */ 627 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 628 queue = ac_to_queue[ac]; 629 /* Priority 3a: If new AC is VO and VI exists - use VI */ 630 else if (ac == IEEE80211_AC_VO && 631 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 632 queue = ac_to_queue[IEEE80211_AC_VI]; 633 /* Priority 3b: No BE so only AC less than the new one is BK */ 634 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 635 queue = ac_to_queue[IEEE80211_AC_BK]; 636 /* Priority 4a: No BE nor BK - use VI if exists */ 637 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 638 queue = ac_to_queue[IEEE80211_AC_VI]; 639 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 640 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 641 queue = ac_to_queue[IEEE80211_AC_VO]; 642 643 /* Make sure queue found (or not) is legal */ 644 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 645 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 646 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 647 IWL_ERR(mvm, "No DATA queues available to share\n"); 648 return -ENOSPC; 649 } 650 651 return queue; 652 } 653 654 /* Re-configure the SCD for a queue that has already been configured */ 655 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 656 int sta_id, int tid, int frame_limit, u16 ssn) 657 { 658 struct iwl_scd_txq_cfg_cmd cmd = { 659 .scd_queue = queue, 660 .action = SCD_CFG_ENABLE_QUEUE, 661 .window = frame_limit, 662 .sta_id = sta_id, 663 .ssn = cpu_to_le16(ssn), 664 .tx_fifo = fifo, 665 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 666 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 667 .tid = tid, 668 }; 669 int ret; 670 671 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 672 return -EINVAL; 673 674 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 675 "Trying to reconfig unallocated queue %d\n", queue)) 676 return -ENXIO; 677 678 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 679 680 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 681 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 682 queue, fifo, ret); 683 684 return ret; 685 } 686 687 /* 688 * If a given queue has a higher AC than the TID stream that is being compared 689 * to, the queue needs to be redirected to the lower AC. This function does that 690 * in such a case, otherwise - if no redirection required - it does nothing, 691 * unless the %force param is true. 692 */ 693 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 694 int ac, int ssn, unsigned int wdg_timeout, 695 bool force, struct iwl_mvm_txq *txq) 696 { 697 struct iwl_scd_txq_cfg_cmd cmd = { 698 .scd_queue = queue, 699 .action = SCD_CFG_DISABLE_QUEUE, 700 }; 701 bool shared_queue; 702 int ret; 703 704 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 705 return -EINVAL; 706 707 /* 708 * If the AC is lower than current one - FIFO needs to be redirected to 709 * the lowest one of the streams in the queue. Check if this is needed 710 * here. 711 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 712 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 713 * we need to check if the numerical value of X is LARGER than of Y. 714 */ 715 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 716 IWL_DEBUG_TX_QUEUES(mvm, 717 "No redirection needed on TXQ #%d\n", 718 queue); 719 return 0; 720 } 721 722 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 723 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 724 cmd.tid = mvm->queue_info[queue].txq_tid; 725 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 726 727 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 728 queue, iwl_mvm_ac_to_tx_fifo[ac]); 729 730 /* Stop the queue and wait for it to empty */ 731 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 732 733 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 734 if (ret) { 735 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 736 queue); 737 ret = -EIO; 738 goto out; 739 } 740 741 /* Before redirecting the queue we need to de-activate it */ 742 iwl_trans_txq_disable(mvm->trans, queue, false); 743 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 744 if (ret) 745 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 746 ret); 747 748 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 749 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 750 751 /* Update the TID "owner" of the queue */ 752 mvm->queue_info[queue].txq_tid = tid; 753 754 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 755 756 /* Redirect to lower AC */ 757 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 758 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 759 760 /* Update AC marking of the queue */ 761 mvm->queue_info[queue].mac80211_ac = ac; 762 763 /* 764 * Mark queue as shared in transport if shared 765 * Note this has to be done after queue enablement because enablement 766 * can also set this value, and there is no indication there to shared 767 * queues 768 */ 769 if (shared_queue) 770 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 771 772 out: 773 /* Continue using the queue */ 774 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 775 776 return ret; 777 } 778 779 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 780 u8 minq, u8 maxq) 781 { 782 int i; 783 784 lockdep_assert_held(&mvm->mutex); 785 786 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 787 "max queue %d >= num_of_queues (%d)", maxq, 788 mvm->trans->trans_cfg->base_params->num_of_queues)) 789 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 790 791 /* This should not be hit with new TX path */ 792 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 793 return -ENOSPC; 794 795 /* Start by looking for a free queue */ 796 for (i = minq; i <= maxq; i++) 797 if (mvm->queue_info[i].tid_bitmap == 0 && 798 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 799 return i; 800 801 return -ENOSPC; 802 } 803 804 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 805 { 806 int max_size = IWL_DEFAULT_QUEUE_SIZE; 807 unsigned int link_id; 808 809 /* this queue isn't used for traffic (cab_queue) */ 810 if (!sta) 811 return IWL_MGMT_QUEUE_SIZE; 812 813 rcu_read_lock(); 814 815 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 816 struct ieee80211_link_sta *link = 817 rcu_dereference(sta->link[link_id]); 818 819 if (!link) 820 continue; 821 822 /* support for 1k ba size */ 823 if (link->eht_cap.has_eht && 824 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 825 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 826 827 /* support for 256 ba size */ 828 if (link->he_cap.has_he && 829 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 830 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 831 } 832 833 rcu_read_unlock(); 834 return max_size; 835 } 836 837 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 838 struct ieee80211_sta *sta, 839 u8 sta_id, u8 tid, unsigned int timeout) 840 { 841 int queue, size; 842 u32 sta_mask = 0; 843 844 if (tid == IWL_MAX_TID_COUNT) { 845 tid = IWL_MGMT_TID; 846 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 847 mvm->trans->cfg->min_txq_size); 848 } else { 849 size = iwl_mvm_get_queue_size(sta); 850 } 851 852 /* take the min with bc tbl entries allowed */ 853 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 854 855 /* size needs to be power of 2 values for calculating read/write pointers */ 856 size = rounddown_pow_of_two(size); 857 858 if (sta) { 859 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 860 unsigned int link_id; 861 862 for (link_id = 0; 863 link_id < ARRAY_SIZE(mvmsta->link); 864 link_id++) { 865 struct iwl_mvm_link_sta *link = 866 rcu_dereference_protected(mvmsta->link[link_id], 867 lockdep_is_held(&mvm->mutex)); 868 869 if (!link) 870 continue; 871 872 sta_mask |= BIT(link->sta_id); 873 } 874 } else { 875 sta_mask |= BIT(sta_id); 876 } 877 878 if (!sta_mask) 879 return -EINVAL; 880 881 do { 882 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 883 tid, size, timeout); 884 885 if (queue < 0) 886 IWL_DEBUG_TX_QUEUES(mvm, 887 "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n", 888 size, sta_mask, tid, queue); 889 size /= 2; 890 } while (queue < 0 && size >= 16); 891 892 if (queue < 0) 893 return queue; 894 895 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 896 queue, sta_mask, tid); 897 898 return queue; 899 } 900 901 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 902 struct ieee80211_sta *sta, u8 ac, 903 int tid) 904 { 905 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 906 struct iwl_mvm_txq *mvmtxq = 907 iwl_mvm_txq_from_tid(sta, tid); 908 unsigned int wdg_timeout = 909 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 910 int queue = -1; 911 912 lockdep_assert_held(&mvm->mutex); 913 914 IWL_DEBUG_TX_QUEUES(mvm, 915 "Allocating queue for sta %d on tid %d\n", 916 mvmsta->deflink.sta_id, tid); 917 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 918 tid, wdg_timeout); 919 if (queue < 0) 920 return queue; 921 922 mvmtxq->txq_id = queue; 923 mvm->tvqm_info[queue].txq_tid = tid; 924 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 925 926 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 927 928 spin_lock_bh(&mvmsta->lock); 929 mvmsta->tid_data[tid].txq_id = queue; 930 spin_unlock_bh(&mvmsta->lock); 931 932 return 0; 933 } 934 935 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 936 struct ieee80211_sta *sta, 937 int queue, u8 sta_id, u8 tid) 938 { 939 bool enable_queue = true; 940 941 /* Make sure this TID isn't already enabled */ 942 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 943 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 944 queue, tid); 945 return false; 946 } 947 948 /* Update mappings and refcounts */ 949 if (mvm->queue_info[queue].tid_bitmap) 950 enable_queue = false; 951 952 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 953 mvm->queue_info[queue].ra_sta_id = sta_id; 954 955 if (enable_queue) { 956 if (tid != IWL_MAX_TID_COUNT) 957 mvm->queue_info[queue].mac80211_ac = 958 tid_to_mac80211_ac[tid]; 959 else 960 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 961 962 mvm->queue_info[queue].txq_tid = tid; 963 } 964 965 if (sta) { 966 struct iwl_mvm_txq *mvmtxq = 967 iwl_mvm_txq_from_tid(sta, tid); 968 969 mvmtxq->txq_id = queue; 970 } 971 972 IWL_DEBUG_TX_QUEUES(mvm, 973 "Enabling TXQ #%d tids=0x%x\n", 974 queue, mvm->queue_info[queue].tid_bitmap); 975 976 return enable_queue; 977 } 978 979 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 980 int queue, u16 ssn, 981 const struct iwl_trans_txq_scd_cfg *cfg, 982 unsigned int wdg_timeout) 983 { 984 struct iwl_scd_txq_cfg_cmd cmd = { 985 .scd_queue = queue, 986 .action = SCD_CFG_ENABLE_QUEUE, 987 .window = cfg->frame_limit, 988 .sta_id = cfg->sta_id, 989 .ssn = cpu_to_le16(ssn), 990 .tx_fifo = cfg->fifo, 991 .aggregate = cfg->aggregate, 992 .tid = cfg->tid, 993 }; 994 bool inc_ssn; 995 996 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 997 return false; 998 999 /* Send the enabling command if we need to */ 1000 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 1001 return false; 1002 1003 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 1004 NULL, wdg_timeout); 1005 if (inc_ssn) 1006 le16_add_cpu(&cmd.ssn, 1); 1007 1008 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1009 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1010 1011 return inc_ssn; 1012 } 1013 1014 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1015 { 1016 struct iwl_scd_txq_cfg_cmd cmd = { 1017 .scd_queue = queue, 1018 .action = SCD_CFG_UPDATE_QUEUE_TID, 1019 }; 1020 int tid; 1021 unsigned long tid_bitmap; 1022 int ret; 1023 1024 lockdep_assert_held(&mvm->mutex); 1025 1026 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1027 return; 1028 1029 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1030 1031 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1032 return; 1033 1034 /* Find any TID for queue */ 1035 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1036 cmd.tid = tid; 1037 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1038 1039 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1040 if (ret) { 1041 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1042 queue, ret); 1043 return; 1044 } 1045 1046 mvm->queue_info[queue].txq_tid = tid; 1047 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1048 queue, tid); 1049 } 1050 1051 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1052 { 1053 struct ieee80211_sta *sta; 1054 struct iwl_mvm_sta *mvmsta; 1055 u8 sta_id; 1056 int tid = -1; 1057 unsigned long tid_bitmap; 1058 unsigned int wdg_timeout; 1059 int ssn; 1060 int ret = true; 1061 1062 /* queue sharing is disabled on new TX path */ 1063 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1064 return; 1065 1066 lockdep_assert_held(&mvm->mutex); 1067 1068 sta_id = mvm->queue_info[queue].ra_sta_id; 1069 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1070 1071 /* Find TID for queue, and make sure it is the only one on the queue */ 1072 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1073 if (tid_bitmap != BIT(tid)) { 1074 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1075 queue, tid_bitmap); 1076 return; 1077 } 1078 1079 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1080 tid); 1081 1082 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1083 lockdep_is_held(&mvm->mutex)); 1084 1085 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1086 return; 1087 1088 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1089 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1090 1091 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1092 1093 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1094 tid_to_mac80211_ac[tid], ssn, 1095 wdg_timeout, true, 1096 iwl_mvm_txq_from_tid(sta, tid)); 1097 if (ret) { 1098 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1099 return; 1100 } 1101 1102 /* If aggs should be turned back on - do it */ 1103 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1104 struct iwl_mvm_add_sta_cmd cmd = {0}; 1105 1106 mvmsta->tid_disable_agg &= ~BIT(tid); 1107 1108 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1109 cmd.sta_id = mvmsta->deflink.sta_id; 1110 cmd.add_modify = STA_MODE_MODIFY; 1111 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1112 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1113 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1114 1115 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1116 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1117 if (!ret) { 1118 IWL_DEBUG_TX_QUEUES(mvm, 1119 "TXQ #%d is now aggregated again\n", 1120 queue); 1121 1122 /* Mark queue intenally as aggregating again */ 1123 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1124 } 1125 } 1126 1127 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1128 } 1129 1130 /* 1131 * Remove inactive TIDs of a given queue. 1132 * If all queue TIDs are inactive - mark the queue as inactive 1133 * If only some the queue TIDs are inactive - unmap them from the queue 1134 * 1135 * Returns %true if all TIDs were removed and the queue could be reused. 1136 */ 1137 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1138 struct iwl_mvm_sta *mvmsta, int queue, 1139 unsigned long tid_bitmap, 1140 unsigned long *unshare_queues, 1141 unsigned long *changetid_queues) 1142 { 1143 unsigned int tid; 1144 1145 lockdep_assert_held(&mvmsta->lock); 1146 lockdep_assert_held(&mvm->mutex); 1147 1148 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1149 return false; 1150 1151 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1152 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1153 /* If some TFDs are still queued - don't mark TID as inactive */ 1154 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1155 tid_bitmap &= ~BIT(tid); 1156 1157 /* Don't mark as inactive any TID that has an active BA */ 1158 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1159 tid_bitmap &= ~BIT(tid); 1160 } 1161 1162 /* If all TIDs in the queue are inactive - return it can be reused */ 1163 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1164 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1165 return true; 1166 } 1167 1168 /* 1169 * If we are here, this is a shared queue and not all TIDs timed-out. 1170 * Remove the ones that did. 1171 */ 1172 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1173 u16 q_tid_bitmap; 1174 1175 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1176 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1177 1178 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1179 1180 /* 1181 * We need to take into account a situation in which a TXQ was 1182 * allocated to TID x, and then turned shared by adding TIDs y 1183 * and z. If TID x becomes inactive and is removed from the TXQ, 1184 * ownership must be given to one of the remaining TIDs. 1185 * This is mainly because if TID x continues - a new queue can't 1186 * be allocated for it as long as it is an owner of another TXQ. 1187 * 1188 * Mark this queue in the right bitmap, we'll send the command 1189 * to the firmware later. 1190 */ 1191 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1192 set_bit(queue, changetid_queues); 1193 1194 IWL_DEBUG_TX_QUEUES(mvm, 1195 "Removing inactive TID %d from shared Q:%d\n", 1196 tid, queue); 1197 } 1198 1199 IWL_DEBUG_TX_QUEUES(mvm, 1200 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1201 mvm->queue_info[queue].tid_bitmap); 1202 1203 /* 1204 * There may be different TIDs with the same mac queues, so make 1205 * sure all TIDs have existing corresponding mac queues enabled 1206 */ 1207 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1208 1209 /* If the queue is marked as shared - "unshare" it */ 1210 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1211 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1212 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1213 queue); 1214 set_bit(queue, unshare_queues); 1215 } 1216 1217 return false; 1218 } 1219 1220 /* 1221 * Check for inactivity - this includes checking if any queue 1222 * can be unshared and finding one (and only one) that can be 1223 * reused. 1224 * This function is also invoked as a sort of clean-up task, 1225 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1226 * 1227 * Returns the queue number, or -ENOSPC. 1228 */ 1229 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1230 { 1231 unsigned long now = jiffies; 1232 unsigned long unshare_queues = 0; 1233 unsigned long changetid_queues = 0; 1234 int i, ret, free_queue = -ENOSPC; 1235 struct ieee80211_sta *queue_owner = NULL; 1236 1237 lockdep_assert_held(&mvm->mutex); 1238 1239 if (iwl_mvm_has_new_tx_api(mvm)) 1240 return -ENOSPC; 1241 1242 rcu_read_lock(); 1243 1244 /* we skip the CMD queue below by starting at 1 */ 1245 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1246 1247 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1248 struct ieee80211_sta *sta; 1249 struct iwl_mvm_sta *mvmsta; 1250 u8 sta_id; 1251 int tid; 1252 unsigned long inactive_tid_bitmap = 0; 1253 unsigned long queue_tid_bitmap; 1254 1255 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1256 if (!queue_tid_bitmap) 1257 continue; 1258 1259 /* If TXQ isn't in active use anyway - nothing to do here... */ 1260 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1261 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1262 continue; 1263 1264 /* Check to see if there are inactive TIDs on this queue */ 1265 for_each_set_bit(tid, &queue_tid_bitmap, 1266 IWL_MAX_TID_COUNT + 1) { 1267 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1268 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1269 continue; 1270 1271 inactive_tid_bitmap |= BIT(tid); 1272 } 1273 1274 /* If all TIDs are active - finish check on this queue */ 1275 if (!inactive_tid_bitmap) 1276 continue; 1277 1278 /* 1279 * If we are here - the queue hadn't been served recently and is 1280 * in use 1281 */ 1282 1283 sta_id = mvm->queue_info[i].ra_sta_id; 1284 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1285 1286 /* 1287 * If the STA doesn't exist anymore, it isn't an error. It could 1288 * be that it was removed since getting the queues, and in this 1289 * case it should've inactivated its queues anyway. 1290 */ 1291 if (IS_ERR_OR_NULL(sta)) 1292 continue; 1293 1294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1295 1296 spin_lock_bh(&mvmsta->lock); 1297 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1298 inactive_tid_bitmap, 1299 &unshare_queues, 1300 &changetid_queues); 1301 if (ret && free_queue < 0) { 1302 queue_owner = sta; 1303 free_queue = i; 1304 } 1305 /* only unlock sta lock - we still need the queue info lock */ 1306 spin_unlock_bh(&mvmsta->lock); 1307 } 1308 1309 1310 /* Reconfigure queues requiring reconfiguation */ 1311 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1312 iwl_mvm_unshare_queue(mvm, i); 1313 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1314 iwl_mvm_change_queue_tid(mvm, i); 1315 1316 rcu_read_unlock(); 1317 1318 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1319 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1320 alloc_for_sta); 1321 if (ret) 1322 return ret; 1323 } 1324 1325 return free_queue; 1326 } 1327 1328 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1329 struct ieee80211_sta *sta, u8 ac, int tid) 1330 { 1331 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1332 struct iwl_trans_txq_scd_cfg cfg = { 1333 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1334 .sta_id = mvmsta->deflink.sta_id, 1335 .tid = tid, 1336 .frame_limit = IWL_FRAME_LIMIT, 1337 }; 1338 unsigned int wdg_timeout = 1339 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1340 int queue = -1; 1341 u16 queue_tmp; 1342 unsigned long disable_agg_tids = 0; 1343 enum iwl_mvm_agg_state queue_state; 1344 bool shared_queue = false, inc_ssn; 1345 int ssn; 1346 unsigned long tfd_queue_mask; 1347 int ret; 1348 1349 lockdep_assert_held(&mvm->mutex); 1350 1351 if (iwl_mvm_has_new_tx_api(mvm)) 1352 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1353 1354 spin_lock_bh(&mvmsta->lock); 1355 tfd_queue_mask = mvmsta->tfd_queue_msk; 1356 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1357 spin_unlock_bh(&mvmsta->lock); 1358 1359 if (tid == IWL_MAX_TID_COUNT) { 1360 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1361 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1362 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1363 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1364 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1365 queue); 1366 1367 /* If no such queue is found, we'll use a DATA queue instead */ 1368 } 1369 1370 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1371 (mvm->queue_info[mvmsta->reserved_queue].status == 1372 IWL_MVM_QUEUE_RESERVED)) { 1373 queue = mvmsta->reserved_queue; 1374 mvm->queue_info[queue].reserved = true; 1375 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1376 } 1377 1378 if (queue < 0) 1379 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1380 IWL_MVM_DQA_MIN_DATA_QUEUE, 1381 IWL_MVM_DQA_MAX_DATA_QUEUE); 1382 if (queue < 0) { 1383 /* try harder - perhaps kill an inactive queue */ 1384 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1385 } 1386 1387 /* No free queue - we'll have to share */ 1388 if (queue <= 0) { 1389 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1390 if (queue > 0) { 1391 shared_queue = true; 1392 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1393 } 1394 } 1395 1396 /* 1397 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1398 * to make sure no one else takes it. 1399 * This will allow avoiding re-acquiring the lock at the end of the 1400 * configuration. On error we'll mark it back as free. 1401 */ 1402 if (queue > 0 && !shared_queue) 1403 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1404 1405 /* This shouldn't happen - out of queues */ 1406 if (WARN_ON(queue <= 0)) { 1407 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1408 tid, cfg.sta_id); 1409 return queue; 1410 } 1411 1412 /* 1413 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1414 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1415 * as aggregatable. 1416 * Mark all DATA queues as allowing to be aggregated at some point 1417 */ 1418 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1419 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1420 1421 IWL_DEBUG_TX_QUEUES(mvm, 1422 "Allocating %squeue #%d to sta %d on tid %d\n", 1423 shared_queue ? "shared " : "", queue, 1424 mvmsta->deflink.sta_id, tid); 1425 1426 if (shared_queue) { 1427 /* Disable any open aggs on this queue */ 1428 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1429 1430 if (disable_agg_tids) { 1431 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1432 queue); 1433 iwl_mvm_invalidate_sta_queue(mvm, queue, 1434 disable_agg_tids, false); 1435 } 1436 } 1437 1438 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1439 1440 /* 1441 * Mark queue as shared in transport if shared 1442 * Note this has to be done after queue enablement because enablement 1443 * can also set this value, and there is no indication there to shared 1444 * queues 1445 */ 1446 if (shared_queue) 1447 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1448 1449 spin_lock_bh(&mvmsta->lock); 1450 /* 1451 * This looks racy, but it is not. We have only one packet for 1452 * this ra/tid in our Tx path since we stop the Qdisc when we 1453 * need to allocate a new TFD queue. 1454 */ 1455 if (inc_ssn) { 1456 mvmsta->tid_data[tid].seq_number += 0x10; 1457 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1458 } 1459 mvmsta->tid_data[tid].txq_id = queue; 1460 mvmsta->tfd_queue_msk |= BIT(queue); 1461 queue_state = mvmsta->tid_data[tid].state; 1462 1463 if (mvmsta->reserved_queue == queue) 1464 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1465 spin_unlock_bh(&mvmsta->lock); 1466 1467 if (!shared_queue) { 1468 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1469 if (ret) 1470 goto out_err; 1471 1472 /* If we need to re-enable aggregations... */ 1473 if (queue_state == IWL_AGG_ON) { 1474 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1475 if (ret) 1476 goto out_err; 1477 } 1478 } else { 1479 /* Redirect queue, if needed */ 1480 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1481 wdg_timeout, false, 1482 iwl_mvm_txq_from_tid(sta, tid)); 1483 if (ret) 1484 goto out_err; 1485 } 1486 1487 return 0; 1488 1489 out_err: 1490 queue_tmp = queue; 1491 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1492 1493 return ret; 1494 } 1495 1496 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1497 { 1498 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1499 add_stream_wk); 1500 1501 mutex_lock(&mvm->mutex); 1502 1503 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1504 1505 while (!list_empty(&mvm->add_stream_txqs)) { 1506 struct iwl_mvm_txq *mvmtxq; 1507 struct ieee80211_txq *txq; 1508 u8 tid; 1509 1510 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1511 struct iwl_mvm_txq, list); 1512 1513 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1514 drv_priv); 1515 tid = txq->tid; 1516 if (tid == IEEE80211_NUM_TIDS) 1517 tid = IWL_MAX_TID_COUNT; 1518 1519 /* 1520 * We can't really do much here, but if this fails we can't 1521 * transmit anyway - so just don't transmit the frame etc. 1522 * and let them back up ... we've tried our best to allocate 1523 * a queue in the function itself. 1524 */ 1525 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1526 spin_lock_bh(&mvm->add_stream_lock); 1527 list_del_init(&mvmtxq->list); 1528 spin_unlock_bh(&mvm->add_stream_lock); 1529 continue; 1530 } 1531 1532 /* now we're ready, any remaining races/concurrency will be 1533 * handled in iwl_mvm_mac_itxq_xmit() 1534 */ 1535 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1536 1537 local_bh_disable(); 1538 spin_lock(&mvm->add_stream_lock); 1539 list_del_init(&mvmtxq->list); 1540 spin_unlock(&mvm->add_stream_lock); 1541 1542 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1543 local_bh_enable(); 1544 } 1545 1546 mutex_unlock(&mvm->mutex); 1547 } 1548 1549 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1550 struct ieee80211_sta *sta, 1551 enum nl80211_iftype vif_type) 1552 { 1553 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1554 int queue; 1555 1556 /* queue reserving is disabled on new TX path */ 1557 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1558 return 0; 1559 1560 /* run the general cleanup/unsharing of queues */ 1561 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1562 1563 /* Make sure we have free resources for this STA */ 1564 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1565 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1566 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1567 IWL_MVM_QUEUE_FREE)) 1568 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1569 else 1570 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1571 IWL_MVM_DQA_MIN_DATA_QUEUE, 1572 IWL_MVM_DQA_MAX_DATA_QUEUE); 1573 if (queue < 0) { 1574 /* try again - this time kick out a queue if needed */ 1575 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1576 if (queue < 0) { 1577 IWL_ERR(mvm, "No available queues for new station\n"); 1578 return -ENOSPC; 1579 } 1580 } 1581 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1582 1583 mvmsta->reserved_queue = queue; 1584 1585 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1586 queue, mvmsta->deflink.sta_id); 1587 1588 return 0; 1589 } 1590 1591 /* 1592 * In DQA mode, after a HW restart the queues should be allocated as before, in 1593 * order to avoid race conditions when there are shared queues. This function 1594 * does the re-mapping and queue allocation. 1595 * 1596 * Note that re-enabling aggregations isn't done in this function. 1597 */ 1598 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1599 struct ieee80211_sta *sta) 1600 { 1601 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1602 unsigned int wdg = 1603 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1604 int i; 1605 struct iwl_trans_txq_scd_cfg cfg = { 1606 .sta_id = mvm_sta->deflink.sta_id, 1607 .frame_limit = IWL_FRAME_LIMIT, 1608 }; 1609 1610 /* Make sure reserved queue is still marked as such (if allocated) */ 1611 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1612 mvm->queue_info[mvm_sta->reserved_queue].status = 1613 IWL_MVM_QUEUE_RESERVED; 1614 1615 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1616 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1617 int txq_id = tid_data->txq_id; 1618 int ac; 1619 1620 if (txq_id == IWL_MVM_INVALID_QUEUE) 1621 continue; 1622 1623 ac = tid_to_mac80211_ac[i]; 1624 1625 if (iwl_mvm_has_new_tx_api(mvm)) { 1626 IWL_DEBUG_TX_QUEUES(mvm, 1627 "Re-mapping sta %d tid %d\n", 1628 mvm_sta->deflink.sta_id, i); 1629 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1630 mvm_sta->deflink.sta_id, 1631 i, wdg); 1632 /* 1633 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1634 * to try again later, we have no other good way of 1635 * failing here 1636 */ 1637 if (txq_id < 0) 1638 txq_id = IWL_MVM_INVALID_QUEUE; 1639 tid_data->txq_id = txq_id; 1640 1641 /* 1642 * Since we don't set the seq number after reset, and HW 1643 * sets it now, FW reset will cause the seq num to start 1644 * at 0 again, so driver will need to update it 1645 * internally as well, so it keeps in sync with real val 1646 */ 1647 tid_data->seq_number = 0; 1648 } else { 1649 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1650 1651 cfg.tid = i; 1652 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1653 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1654 txq_id == 1655 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1656 1657 IWL_DEBUG_TX_QUEUES(mvm, 1658 "Re-mapping sta %d tid %d to queue %d\n", 1659 mvm_sta->deflink.sta_id, i, 1660 txq_id); 1661 1662 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1663 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1664 } 1665 } 1666 } 1667 1668 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1669 struct iwl_mvm_int_sta *sta, 1670 const u8 *addr, 1671 u16 mac_id, u16 color) 1672 { 1673 struct iwl_mvm_add_sta_cmd cmd; 1674 int ret; 1675 u32 status = ADD_STA_SUCCESS; 1676 1677 lockdep_assert_held(&mvm->mutex); 1678 1679 memset(&cmd, 0, sizeof(cmd)); 1680 cmd.sta_id = sta->sta_id; 1681 1682 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1683 sta->type == IWL_STA_AUX_ACTIVITY) 1684 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1685 else 1686 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1687 color)); 1688 1689 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1690 cmd.station_type = sta->type; 1691 1692 if (!iwl_mvm_has_new_tx_api(mvm)) 1693 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1694 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1695 1696 if (addr) 1697 memcpy(cmd.addr, addr, ETH_ALEN); 1698 1699 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1700 iwl_mvm_add_sta_cmd_size(mvm), 1701 &cmd, &status); 1702 if (ret) 1703 return ret; 1704 1705 switch (status & IWL_ADD_STA_STATUS_MASK) { 1706 case ADD_STA_SUCCESS: 1707 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1708 return 0; 1709 default: 1710 ret = -EIO; 1711 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1712 status); 1713 break; 1714 } 1715 return ret; 1716 } 1717 1718 /* Initialize driver data of a new sta */ 1719 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1720 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1721 { 1722 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1723 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1724 struct iwl_mvm_rxq_dup_data *dup_data; 1725 int i, ret = 0; 1726 1727 lockdep_assert_held(&mvm->mutex); 1728 1729 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1730 mvmvif->color); 1731 mvm_sta->vif = vif; 1732 1733 /* for MLD sta_id(s) should be allocated for each link before calling 1734 * this function 1735 */ 1736 if (!mvm->mld_api_is_used) { 1737 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1738 return -EINVAL; 1739 1740 mvm_sta->deflink.sta_id = sta_id; 1741 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1742 1743 if (!mvm->trans->trans_cfg->gen2) 1744 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1745 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1746 else 1747 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1748 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1749 } 1750 1751 mvm_sta->tt_tx_protection = false; 1752 mvm_sta->sta_type = sta_type; 1753 1754 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1755 1756 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1757 /* 1758 * Mark all queues for this STA as unallocated and defer TX 1759 * frames until the queue is allocated 1760 */ 1761 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1762 } 1763 1764 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1765 struct iwl_mvm_txq *mvmtxq = 1766 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1767 1768 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1769 INIT_LIST_HEAD(&mvmtxq->list); 1770 atomic_set(&mvmtxq->tx_request, 0); 1771 } 1772 1773 if (iwl_mvm_has_new_rx_api(mvm)) { 1774 int q; 1775 1776 dup_data = kcalloc(mvm->trans->num_rx_queues, 1777 sizeof(*dup_data), GFP_KERNEL); 1778 if (!dup_data) 1779 return -ENOMEM; 1780 /* 1781 * Initialize all the last_seq values to 0xffff which can never 1782 * compare equal to the frame's seq_ctrl in the check in 1783 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1784 * number and fragmented packets don't reach that function. 1785 * 1786 * This thus allows receiving a packet with seqno 0 and the 1787 * retry bit set as the very first packet on a new TID. 1788 */ 1789 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1790 memset(dup_data[q].last_seq, 0xff, 1791 sizeof(dup_data[q].last_seq)); 1792 mvm_sta->dup_data = dup_data; 1793 } 1794 1795 if (!iwl_mvm_has_new_tx_api(mvm)) { 1796 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1797 ieee80211_vif_type_p2p(vif)); 1798 if (ret) 1799 return ret; 1800 } 1801 1802 /* 1803 * if rs is registered with mac80211, then "add station" will be handled 1804 * via the corresponding ops, otherwise need to notify rate scaling here 1805 */ 1806 if (iwl_mvm_has_tlc_offload(mvm)) 1807 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1808 else 1809 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1810 1811 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1812 1813 return 0; 1814 } 1815 1816 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1817 struct ieee80211_vif *vif, 1818 struct ieee80211_sta *sta) 1819 { 1820 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1821 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1822 int ret, sta_id; 1823 bool sta_update = false; 1824 unsigned int sta_flags = 0; 1825 1826 lockdep_assert_held(&mvm->mutex); 1827 1828 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1829 sta_id = iwl_mvm_find_free_sta_id(mvm, 1830 ieee80211_vif_type_p2p(vif)); 1831 else 1832 sta_id = mvm_sta->deflink.sta_id; 1833 1834 if (sta_id == IWL_MVM_INVALID_STA) 1835 return -ENOSPC; 1836 1837 spin_lock_init(&mvm_sta->lock); 1838 1839 /* if this is a HW restart re-alloc existing queues */ 1840 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1841 struct iwl_mvm_int_sta tmp_sta = { 1842 .sta_id = sta_id, 1843 .type = mvm_sta->sta_type, 1844 }; 1845 1846 /* First add an empty station since allocating 1847 * a queue requires a valid station 1848 */ 1849 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1850 mvmvif->id, mvmvif->color); 1851 if (ret) 1852 goto err; 1853 1854 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1855 sta_update = true; 1856 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1857 goto update_fw; 1858 } 1859 1860 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1861 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1862 1863 update_fw: 1864 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1865 if (ret) 1866 goto err; 1867 1868 if (vif->type == NL80211_IFTYPE_STATION) { 1869 if (!sta->tdls) { 1870 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1871 mvmvif->deflink.ap_sta_id = sta_id; 1872 } else { 1873 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1874 } 1875 } 1876 1877 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1878 1879 return 0; 1880 1881 err: 1882 return ret; 1883 } 1884 1885 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1886 bool drain) 1887 { 1888 struct iwl_mvm_add_sta_cmd cmd = {}; 1889 int ret; 1890 u32 status; 1891 1892 lockdep_assert_held(&mvm->mutex); 1893 1894 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1895 cmd.sta_id = mvmsta->deflink.sta_id; 1896 cmd.add_modify = STA_MODE_MODIFY; 1897 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1898 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1899 1900 status = ADD_STA_SUCCESS; 1901 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1902 iwl_mvm_add_sta_cmd_size(mvm), 1903 &cmd, &status); 1904 if (ret) 1905 return ret; 1906 1907 switch (status & IWL_ADD_STA_STATUS_MASK) { 1908 case ADD_STA_SUCCESS: 1909 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1910 mvmsta->deflink.sta_id); 1911 break; 1912 default: 1913 ret = -EIO; 1914 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1915 mvmsta->deflink.sta_id); 1916 break; 1917 } 1918 1919 return ret; 1920 } 1921 1922 /* 1923 * Remove a station from the FW table. Before sending the command to remove 1924 * the station validate that the station is indeed known to the driver (sanity 1925 * only). 1926 */ 1927 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1928 { 1929 struct ieee80211_sta *sta; 1930 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1931 .sta_id = sta_id, 1932 }; 1933 int ret; 1934 1935 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1936 lockdep_is_held(&mvm->mutex)); 1937 1938 /* Note: internal stations are marked as error values */ 1939 if (!sta) { 1940 IWL_ERR(mvm, "Invalid station id\n"); 1941 return -EINVAL; 1942 } 1943 1944 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1945 sizeof(rm_sta_cmd), &rm_sta_cmd); 1946 if (ret) { 1947 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1948 return ret; 1949 } 1950 1951 return 0; 1952 } 1953 1954 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1955 struct ieee80211_vif *vif, 1956 struct ieee80211_sta *sta) 1957 { 1958 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1959 int i; 1960 1961 lockdep_assert_held(&mvm->mutex); 1962 1963 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1964 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1965 continue; 1966 1967 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 1968 &mvm_sta->tid_data[i].txq_id, i); 1969 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1970 } 1971 1972 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1973 struct iwl_mvm_txq *mvmtxq = 1974 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1975 1976 spin_lock_bh(&mvm->add_stream_lock); 1977 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1978 list_del_init(&mvmtxq->list); 1979 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1980 spin_unlock_bh(&mvm->add_stream_lock); 1981 } 1982 } 1983 1984 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1985 struct iwl_mvm_sta *mvm_sta) 1986 { 1987 int i; 1988 1989 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1990 u16 txq_id; 1991 int ret; 1992 1993 spin_lock_bh(&mvm_sta->lock); 1994 txq_id = mvm_sta->tid_data[i].txq_id; 1995 spin_unlock_bh(&mvm_sta->lock); 1996 1997 if (txq_id == IWL_MVM_INVALID_QUEUE) 1998 continue; 1999 2000 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2001 if (ret) 2002 return ret; 2003 } 2004 2005 return 0; 2006 } 2007 2008 /* Execute the common part for both MLD and non-MLD modes. 2009 * Returns if we're done with removing the station, either 2010 * with error or success 2011 */ 2012 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2013 struct ieee80211_sta *sta, 2014 struct ieee80211_link_sta *link_sta, int *ret) 2015 { 2016 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2017 struct iwl_mvm_vif_link_info *mvm_link = 2018 mvmvif->link[link_sta->link_id]; 2019 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2020 struct iwl_mvm_link_sta *mvm_link_sta; 2021 u8 sta_id; 2022 2023 lockdep_assert_held(&mvm->mutex); 2024 2025 mvm_link_sta = 2026 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2027 lockdep_is_held(&mvm->mutex)); 2028 sta_id = mvm_link_sta->sta_id; 2029 2030 /* If there is a TXQ still marked as reserved - free it */ 2031 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2032 u8 reserved_txq = mvm_sta->reserved_queue; 2033 enum iwl_mvm_queue_status *status; 2034 2035 /* 2036 * If no traffic has gone through the reserved TXQ - it 2037 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2038 * should be manually marked as free again 2039 */ 2040 status = &mvm->queue_info[reserved_txq].status; 2041 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2042 (*status != IWL_MVM_QUEUE_FREE), 2043 "sta_id %d reserved txq %d status %d", 2044 sta_id, reserved_txq, *status)) { 2045 *ret = -EINVAL; 2046 return true; 2047 } 2048 2049 *status = IWL_MVM_QUEUE_FREE; 2050 } 2051 2052 if (vif->type == NL80211_IFTYPE_STATION) { 2053 /* if associated - we can't remove the AP STA now */ 2054 if (vif->cfg.assoc) 2055 return true; 2056 2057 /* first remove remaining keys */ 2058 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2059 2060 /* unassoc - go ahead - remove the AP STA now */ 2061 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2062 } 2063 2064 /* 2065 * This shouldn't happen - the TDLS channel switch should be canceled 2066 * before the STA is removed. 2067 */ 2068 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2069 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2070 cancel_delayed_work(&mvm->tdls_cs.dwork); 2071 } 2072 2073 /* 2074 * Make sure that the tx response code sees the station as -EBUSY and 2075 * calls the drain worker. 2076 */ 2077 spin_lock_bh(&mvm_sta->lock); 2078 spin_unlock_bh(&mvm_sta->lock); 2079 2080 return false; 2081 } 2082 2083 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2084 struct ieee80211_vif *vif, 2085 struct ieee80211_sta *sta) 2086 { 2087 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2088 int ret; 2089 2090 lockdep_assert_held(&mvm->mutex); 2091 2092 if (iwl_mvm_has_new_rx_api(mvm)) 2093 kfree(mvm_sta->dup_data); 2094 2095 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2096 if (ret) 2097 return ret; 2098 2099 /* flush its queues here since we are freeing mvm_sta */ 2100 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 2101 if (ret) 2102 return ret; 2103 if (iwl_mvm_has_new_tx_api(mvm)) { 2104 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2105 } else { 2106 u32 q_mask = mvm_sta->tfd_queue_msk; 2107 2108 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2109 q_mask); 2110 } 2111 if (ret) 2112 return ret; 2113 2114 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2115 2116 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2117 2118 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2119 return ret; 2120 2121 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2122 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2123 2124 return ret; 2125 } 2126 2127 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2128 struct ieee80211_vif *vif, 2129 u8 sta_id) 2130 { 2131 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2132 2133 lockdep_assert_held(&mvm->mutex); 2134 2135 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2136 return ret; 2137 } 2138 2139 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2140 struct iwl_mvm_int_sta *sta, 2141 u32 qmask, enum nl80211_iftype iftype, 2142 u8 type) 2143 { 2144 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2145 sta->sta_id == IWL_MVM_INVALID_STA) { 2146 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2147 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2148 return -ENOSPC; 2149 } 2150 2151 sta->tfd_queue_msk = qmask; 2152 sta->type = type; 2153 2154 /* put a non-NULL value so iterating over the stations won't stop */ 2155 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2156 return 0; 2157 } 2158 2159 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2160 { 2161 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2162 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2163 sta->sta_id = IWL_MVM_INVALID_STA; 2164 } 2165 2166 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2167 u8 sta_id, u8 fifo) 2168 { 2169 unsigned int wdg_timeout = 2170 mvm->trans->trans_cfg->base_params->wd_timeout; 2171 struct iwl_trans_txq_scd_cfg cfg = { 2172 .fifo = fifo, 2173 .sta_id = sta_id, 2174 .tid = IWL_MAX_TID_COUNT, 2175 .aggregate = false, 2176 .frame_limit = IWL_FRAME_LIMIT, 2177 }; 2178 2179 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2180 2181 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2182 } 2183 2184 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2185 { 2186 unsigned int wdg_timeout = 2187 mvm->trans->trans_cfg->base_params->wd_timeout; 2188 2189 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2190 2191 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2192 wdg_timeout); 2193 } 2194 2195 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2196 int maccolor, u8 *addr, 2197 struct iwl_mvm_int_sta *sta, 2198 u16 *queue, int fifo) 2199 { 2200 int ret; 2201 2202 /* Map queue to fifo - needs to happen before adding station */ 2203 if (!iwl_mvm_has_new_tx_api(mvm)) 2204 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2205 2206 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2207 if (ret) { 2208 if (!iwl_mvm_has_new_tx_api(mvm)) 2209 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2210 IWL_MAX_TID_COUNT); 2211 return ret; 2212 } 2213 2214 /* 2215 * For 22000 firmware and on we cannot add queue to a station unknown 2216 * to firmware so enable queue here - after the station was added 2217 */ 2218 if (iwl_mvm_has_new_tx_api(mvm)) { 2219 int txq; 2220 2221 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2222 if (txq < 0) { 2223 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2224 return txq; 2225 } 2226 2227 *queue = txq; 2228 } 2229 2230 return 0; 2231 } 2232 2233 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2234 { 2235 int ret; 2236 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2237 BIT(mvm->aux_queue); 2238 2239 lockdep_assert_held(&mvm->mutex); 2240 2241 /* Allocate aux station and assign to it the aux queue */ 2242 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2243 NL80211_IFTYPE_UNSPECIFIED, 2244 IWL_STA_AUX_ACTIVITY); 2245 if (ret) 2246 return ret; 2247 2248 /* 2249 * In CDB NICs we need to specify which lmac to use for aux activity 2250 * using the mac_id argument place to send lmac_id to the function 2251 */ 2252 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2253 &mvm->aux_sta, &mvm->aux_queue, 2254 IWL_MVM_TX_FIFO_MCAST); 2255 if (ret) { 2256 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2257 return ret; 2258 } 2259 2260 return 0; 2261 } 2262 2263 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2264 { 2265 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2266 2267 lockdep_assert_held(&mvm->mutex); 2268 2269 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2270 NULL, &mvm->snif_sta, 2271 &mvm->snif_queue, 2272 IWL_MVM_TX_FIFO_BE); 2273 } 2274 2275 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2276 { 2277 int ret; 2278 2279 lockdep_assert_held(&mvm->mutex); 2280 2281 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2282 return -EINVAL; 2283 2284 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2285 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2286 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2287 if (ret) 2288 IWL_WARN(mvm, "Failed sending remove station\n"); 2289 2290 return ret; 2291 } 2292 2293 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2294 { 2295 int ret; 2296 2297 lockdep_assert_held(&mvm->mutex); 2298 2299 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2300 return -EINVAL; 2301 2302 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2303 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2304 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2305 if (ret) 2306 IWL_WARN(mvm, "Failed sending remove station\n"); 2307 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2308 2309 return ret; 2310 } 2311 2312 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2313 { 2314 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2315 } 2316 2317 /* 2318 * Send the add station command for the vif's broadcast station. 2319 * Assumes that the station was already allocated. 2320 * 2321 * @mvm: the mvm component 2322 * @vif: the interface to which the broadcast station is added 2323 * @bsta: the broadcast station to add. 2324 */ 2325 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2326 { 2327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2328 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2329 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2330 const u8 *baddr = _baddr; 2331 int queue; 2332 int ret; 2333 unsigned int wdg_timeout = 2334 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2335 struct iwl_trans_txq_scd_cfg cfg = { 2336 .fifo = IWL_MVM_TX_FIFO_VO, 2337 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2338 .tid = IWL_MAX_TID_COUNT, 2339 .aggregate = false, 2340 .frame_limit = IWL_FRAME_LIMIT, 2341 }; 2342 2343 lockdep_assert_held(&mvm->mutex); 2344 2345 if (!iwl_mvm_has_new_tx_api(mvm)) { 2346 if (vif->type == NL80211_IFTYPE_AP || 2347 vif->type == NL80211_IFTYPE_ADHOC) { 2348 queue = mvm->probe_queue; 2349 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2350 queue = mvm->p2p_dev_queue; 2351 } else { 2352 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2353 return -EINVAL; 2354 } 2355 2356 bsta->tfd_queue_msk |= BIT(queue); 2357 2358 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2359 } 2360 2361 if (vif->type == NL80211_IFTYPE_ADHOC) 2362 baddr = vif->bss_conf.bssid; 2363 2364 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2365 return -ENOSPC; 2366 2367 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2368 mvmvif->id, mvmvif->color); 2369 if (ret) 2370 return ret; 2371 2372 /* 2373 * For 22000 firmware and on we cannot add queue to a station unknown 2374 * to firmware so enable queue here - after the station was added 2375 */ 2376 if (iwl_mvm_has_new_tx_api(mvm)) { 2377 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2378 IWL_MAX_TID_COUNT, 2379 wdg_timeout); 2380 if (queue < 0) { 2381 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2382 return queue; 2383 } 2384 2385 if (vif->type == NL80211_IFTYPE_AP || 2386 vif->type == NL80211_IFTYPE_ADHOC) { 2387 /* for queue management */ 2388 mvm->probe_queue = queue; 2389 /* for use in TX */ 2390 mvmvif->deflink.mgmt_queue = queue; 2391 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2392 mvm->p2p_dev_queue = queue; 2393 } 2394 } else if (vif->type == NL80211_IFTYPE_AP || 2395 vif->type == NL80211_IFTYPE_ADHOC) { 2396 /* set it for use in TX */ 2397 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2398 } 2399 2400 return 0; 2401 } 2402 2403 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2404 struct ieee80211_vif *vif) 2405 { 2406 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2407 u16 *queueptr, queue; 2408 2409 lockdep_assert_held(&mvm->mutex); 2410 2411 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.bcast_sta, true); 2412 2413 switch (vif->type) { 2414 case NL80211_IFTYPE_AP: 2415 case NL80211_IFTYPE_ADHOC: 2416 queueptr = &mvm->probe_queue; 2417 break; 2418 case NL80211_IFTYPE_P2P_DEVICE: 2419 queueptr = &mvm->p2p_dev_queue; 2420 break; 2421 default: 2422 WARN(1, "Can't free bcast queue on vif type %d\n", 2423 vif->type); 2424 return; 2425 } 2426 2427 queue = *queueptr; 2428 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2429 queueptr, IWL_MAX_TID_COUNT); 2430 2431 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2432 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2433 2434 if (iwl_mvm_has_new_tx_api(mvm)) 2435 return; 2436 2437 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2438 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2439 } 2440 2441 /* Send the FW a request to remove the station from it's internal data 2442 * structures, but DO NOT remove the entry from the local data structures. */ 2443 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2444 { 2445 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2446 int ret; 2447 2448 lockdep_assert_held(&mvm->mutex); 2449 2450 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2451 2452 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2453 if (ret) 2454 IWL_WARN(mvm, "Failed sending remove station\n"); 2455 return ret; 2456 } 2457 2458 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2459 { 2460 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2461 2462 lockdep_assert_held(&mvm->mutex); 2463 2464 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2465 ieee80211_vif_type_p2p(vif), 2466 IWL_STA_GENERAL_PURPOSE); 2467 } 2468 2469 /* Allocate a new station entry for the broadcast station to the given vif, 2470 * and send it to the FW. 2471 * Note that each P2P mac should have its own broadcast station. 2472 * 2473 * @mvm: the mvm component 2474 * @vif: the interface to which the broadcast station is added 2475 * @bsta: the broadcast station to add. */ 2476 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2477 { 2478 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2479 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2480 int ret; 2481 2482 lockdep_assert_held(&mvm->mutex); 2483 2484 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2485 if (ret) 2486 return ret; 2487 2488 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2489 2490 if (ret) 2491 iwl_mvm_dealloc_int_sta(mvm, bsta); 2492 2493 return ret; 2494 } 2495 2496 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2497 { 2498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2499 2500 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2501 } 2502 2503 /* 2504 * Send the FW a request to remove the station from it's internal data 2505 * structures, and in addition remove it from the local data structure. 2506 */ 2507 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2508 { 2509 int ret; 2510 2511 lockdep_assert_held(&mvm->mutex); 2512 2513 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2514 2515 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2516 2517 return ret; 2518 } 2519 2520 /* 2521 * Allocate a new station entry for the multicast station to the given vif, 2522 * and send it to the FW. 2523 * Note that each AP/GO mac should have its own multicast station. 2524 * 2525 * @mvm: the mvm component 2526 * @vif: the interface to which the multicast station is added 2527 */ 2528 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2529 { 2530 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2531 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2532 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2533 const u8 *maddr = _maddr; 2534 struct iwl_trans_txq_scd_cfg cfg = { 2535 .fifo = vif->type == NL80211_IFTYPE_AP ? 2536 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2537 .sta_id = msta->sta_id, 2538 .tid = 0, 2539 .aggregate = false, 2540 .frame_limit = IWL_FRAME_LIMIT, 2541 }; 2542 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2543 int ret; 2544 2545 lockdep_assert_held(&mvm->mutex); 2546 2547 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2548 vif->type != NL80211_IFTYPE_ADHOC)) 2549 return -ENOTSUPP; 2550 2551 /* 2552 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2553 * invalid, so make sure we use the queue we want. 2554 * Note that this is done here as we want to avoid making DQA 2555 * changes in mac80211 layer. 2556 */ 2557 if (vif->type == NL80211_IFTYPE_ADHOC) 2558 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2559 2560 /* 2561 * While in previous FWs we had to exclude cab queue from TFD queue 2562 * mask, now it is needed as any other queue. 2563 */ 2564 if (!iwl_mvm_has_new_tx_api(mvm) && 2565 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2566 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2567 &cfg, 2568 timeout); 2569 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2570 } 2571 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2572 mvmvif->id, mvmvif->color); 2573 if (ret) 2574 goto err; 2575 2576 /* 2577 * Enable cab queue after the ADD_STA command is sent. 2578 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2579 * command with unknown station id, and for FW that doesn't support 2580 * station API since the cab queue is not included in the 2581 * tfd_queue_mask. 2582 */ 2583 if (iwl_mvm_has_new_tx_api(mvm)) { 2584 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2585 0, timeout); 2586 if (queue < 0) { 2587 ret = queue; 2588 goto err; 2589 } 2590 mvmvif->deflink.cab_queue = queue; 2591 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2592 IWL_UCODE_TLV_API_STA_TYPE)) 2593 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2594 &cfg, 2595 timeout); 2596 2597 return 0; 2598 err: 2599 iwl_mvm_dealloc_int_sta(mvm, msta); 2600 return ret; 2601 } 2602 2603 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2604 struct ieee80211_key_conf *keyconf, 2605 bool mcast) 2606 { 2607 union { 2608 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2609 struct iwl_mvm_add_sta_key_cmd cmd; 2610 } u = {}; 2611 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2612 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2613 __le16 key_flags; 2614 int ret, size; 2615 u32 status; 2616 2617 /* This is a valid situation for GTK removal */ 2618 if (sta_id == IWL_MVM_INVALID_STA) 2619 return 0; 2620 2621 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2622 STA_KEY_FLG_KEYID_MSK); 2623 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2624 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2625 2626 if (mcast) 2627 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2628 2629 /* 2630 * The fields assigned here are in the same location at the start 2631 * of the command, so we can do this union trick. 2632 */ 2633 u.cmd.common.key_flags = key_flags; 2634 u.cmd.common.key_offset = keyconf->hw_key_idx; 2635 u.cmd.common.sta_id = sta_id; 2636 2637 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2638 2639 status = ADD_STA_SUCCESS; 2640 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2641 &status); 2642 2643 switch (status) { 2644 case ADD_STA_SUCCESS: 2645 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2646 break; 2647 default: 2648 ret = -EIO; 2649 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2650 break; 2651 } 2652 2653 return ret; 2654 } 2655 2656 /* 2657 * Send the FW a request to remove the station from it's internal data 2658 * structures, and in addition remove it from the local data structure. 2659 */ 2660 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2661 { 2662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2663 int ret; 2664 2665 lockdep_assert_held(&mvm->mutex); 2666 2667 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.mcast_sta, true); 2668 2669 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2670 &mvmvif->deflink.cab_queue, 0); 2671 2672 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2673 if (ret) 2674 IWL_WARN(mvm, "Failed sending remove station\n"); 2675 2676 return ret; 2677 } 2678 2679 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2680 { 2681 struct iwl_mvm_delba_data notif = { 2682 .baid = baid, 2683 }; 2684 2685 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2686 ¬if, sizeof(notif)); 2687 }; 2688 2689 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2690 struct iwl_mvm_baid_data *data) 2691 { 2692 int i; 2693 2694 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2695 2696 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2697 int j; 2698 struct iwl_mvm_reorder_buffer *reorder_buf = 2699 &data->reorder_buf[i]; 2700 struct iwl_mvm_reorder_buf_entry *entries = 2701 &data->entries[i * data->entries_per_queue]; 2702 2703 spin_lock_bh(&reorder_buf->lock); 2704 if (likely(!reorder_buf->num_stored)) { 2705 spin_unlock_bh(&reorder_buf->lock); 2706 continue; 2707 } 2708 2709 /* 2710 * This shouldn't happen in regular DELBA since the internal 2711 * delBA notification should trigger a release of all frames in 2712 * the reorder buffer. 2713 */ 2714 WARN_ON(1); 2715 2716 for (j = 0; j < reorder_buf->buf_size; j++) 2717 __skb_queue_purge(&entries[j].e.frames); 2718 /* 2719 * Prevent timer re-arm. This prevents a very far fetched case 2720 * where we timed out on the notification. There may be prior 2721 * RX frames pending in the RX queue before the notification 2722 * that might get processed between now and the actual deletion 2723 * and we would re-arm the timer although we are deleting the 2724 * reorder buffer. 2725 */ 2726 reorder_buf->removed = true; 2727 spin_unlock_bh(&reorder_buf->lock); 2728 del_timer_sync(&reorder_buf->reorder_timer); 2729 } 2730 } 2731 2732 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2733 struct iwl_mvm_baid_data *data, 2734 u16 ssn, u16 buf_size) 2735 { 2736 int i; 2737 2738 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2739 struct iwl_mvm_reorder_buffer *reorder_buf = 2740 &data->reorder_buf[i]; 2741 struct iwl_mvm_reorder_buf_entry *entries = 2742 &data->entries[i * data->entries_per_queue]; 2743 int j; 2744 2745 reorder_buf->num_stored = 0; 2746 reorder_buf->head_sn = ssn; 2747 reorder_buf->buf_size = buf_size; 2748 /* rx reorder timer */ 2749 timer_setup(&reorder_buf->reorder_timer, 2750 iwl_mvm_reorder_timer_expired, 0); 2751 spin_lock_init(&reorder_buf->lock); 2752 reorder_buf->mvm = mvm; 2753 reorder_buf->queue = i; 2754 reorder_buf->valid = false; 2755 for (j = 0; j < reorder_buf->buf_size; j++) 2756 __skb_queue_head_init(&entries[j].e.frames); 2757 } 2758 } 2759 2760 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2761 struct ieee80211_sta *sta, 2762 bool start, int tid, u16 ssn, 2763 u16 buf_size) 2764 { 2765 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2766 struct iwl_mvm_add_sta_cmd cmd = { 2767 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2768 .sta_id = mvm_sta->deflink.sta_id, 2769 .add_modify = STA_MODE_MODIFY, 2770 }; 2771 u32 status; 2772 int ret; 2773 2774 if (start) { 2775 cmd.add_immediate_ba_tid = tid; 2776 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2777 cmd.rx_ba_window = cpu_to_le16(buf_size); 2778 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2779 } else { 2780 cmd.remove_immediate_ba_tid = tid; 2781 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2782 } 2783 2784 status = ADD_STA_SUCCESS; 2785 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2786 iwl_mvm_add_sta_cmd_size(mvm), 2787 &cmd, &status); 2788 if (ret) 2789 return ret; 2790 2791 switch (status & IWL_ADD_STA_STATUS_MASK) { 2792 case ADD_STA_SUCCESS: 2793 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2794 start ? "start" : "stopp"); 2795 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2796 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2797 return -EINVAL; 2798 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2799 case ADD_STA_IMMEDIATE_BA_FAILURE: 2800 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2801 return -ENOSPC; 2802 default: 2803 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2804 start ? "start" : "stopp", status); 2805 return -EIO; 2806 } 2807 } 2808 2809 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2810 struct ieee80211_sta *sta, 2811 bool start, int tid, u16 ssn, 2812 u16 buf_size, int baid) 2813 { 2814 struct iwl_rx_baid_cfg_cmd cmd = { 2815 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2816 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2817 }; 2818 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2819 int ret; 2820 2821 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2822 2823 if (start) { 2824 cmd.alloc.sta_id_mask = 2825 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2826 cmd.alloc.tid = tid; 2827 cmd.alloc.ssn = cpu_to_le16(ssn); 2828 cmd.alloc.win_size = cpu_to_le16(buf_size); 2829 baid = -EIO; 2830 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2831 cmd.remove_v1.baid = cpu_to_le32(baid); 2832 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2833 } else { 2834 cmd.remove.sta_id_mask = 2835 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2836 cmd.remove.tid = cpu_to_le32(tid); 2837 } 2838 2839 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2840 &cmd, &baid); 2841 if (ret) 2842 return ret; 2843 2844 if (!start) { 2845 /* ignore firmware baid on remove */ 2846 baid = 0; 2847 } 2848 2849 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2850 start ? "start" : "stopp"); 2851 2852 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2853 return -EINVAL; 2854 2855 return baid; 2856 } 2857 2858 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2859 bool start, int tid, u16 ssn, u16 buf_size, 2860 int baid) 2861 { 2862 if (fw_has_capa(&mvm->fw->ucode_capa, 2863 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2864 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2865 tid, ssn, buf_size, baid); 2866 2867 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2868 tid, ssn, buf_size); 2869 } 2870 2871 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2872 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2873 { 2874 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2875 struct iwl_mvm_baid_data *baid_data = NULL; 2876 int ret, baid; 2877 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2878 IWL_MAX_BAID_OLD; 2879 2880 lockdep_assert_held(&mvm->mutex); 2881 2882 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2883 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2884 return -ENOSPC; 2885 } 2886 2887 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2888 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2889 2890 /* sparse doesn't like the __align() so don't check */ 2891 #ifndef __CHECKER__ 2892 /* 2893 * The division below will be OK if either the cache line size 2894 * can be divided by the entry size (ALIGN will round up) or if 2895 * if the entry size can be divided by the cache line size, in 2896 * which case the ALIGN() will do nothing. 2897 */ 2898 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2899 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2900 #endif 2901 2902 /* 2903 * Upward align the reorder buffer size to fill an entire cache 2904 * line for each queue, to avoid sharing cache lines between 2905 * different queues. 2906 */ 2907 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2908 2909 /* 2910 * Allocate here so if allocation fails we can bail out early 2911 * before starting the BA session in the firmware 2912 */ 2913 baid_data = kzalloc(sizeof(*baid_data) + 2914 mvm->trans->num_rx_queues * 2915 reorder_buf_size, 2916 GFP_KERNEL); 2917 if (!baid_data) 2918 return -ENOMEM; 2919 2920 /* 2921 * This division is why we need the above BUILD_BUG_ON(), 2922 * if that doesn't hold then this will not be right. 2923 */ 2924 baid_data->entries_per_queue = 2925 reorder_buf_size / sizeof(baid_data->entries[0]); 2926 } 2927 2928 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2929 baid = mvm_sta->tid_to_baid[tid]; 2930 } else { 2931 /* we don't really need it in this case */ 2932 baid = -1; 2933 } 2934 2935 /* Don't send command to remove (start=0) BAID during restart */ 2936 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2937 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2938 baid); 2939 2940 if (baid < 0) { 2941 ret = baid; 2942 goto out_free; 2943 } 2944 2945 if (start) { 2946 mvm->rx_ba_sessions++; 2947 2948 if (!iwl_mvm_has_new_rx_api(mvm)) 2949 return 0; 2950 2951 baid_data->baid = baid; 2952 baid_data->timeout = timeout; 2953 baid_data->last_rx = jiffies; 2954 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2955 timer_setup(&baid_data->session_timer, 2956 iwl_mvm_rx_agg_session_expired, 0); 2957 baid_data->mvm = mvm; 2958 baid_data->tid = tid; 2959 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2960 2961 mvm_sta->tid_to_baid[tid] = baid; 2962 if (timeout) 2963 mod_timer(&baid_data->session_timer, 2964 TU_TO_EXP_TIME(timeout * 2)); 2965 2966 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2967 /* 2968 * protect the BA data with RCU to cover a case where our 2969 * internal RX sync mechanism will timeout (not that it's 2970 * supposed to happen) and we will free the session data while 2971 * RX is being processed in parallel 2972 */ 2973 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2974 mvm_sta->deflink.sta_id, tid, baid); 2975 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2976 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2977 } else { 2978 baid = mvm_sta->tid_to_baid[tid]; 2979 2980 if (mvm->rx_ba_sessions > 0) 2981 /* check that restart flow didn't zero the counter */ 2982 mvm->rx_ba_sessions--; 2983 if (!iwl_mvm_has_new_rx_api(mvm)) 2984 return 0; 2985 2986 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2987 return -EINVAL; 2988 2989 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2990 if (WARN_ON(!baid_data)) 2991 return -EINVAL; 2992 2993 /* synchronize all rx queues so we can safely delete */ 2994 iwl_mvm_free_reorder(mvm, baid_data); 2995 timer_shutdown_sync(&baid_data->session_timer); 2996 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2997 kfree_rcu(baid_data, rcu_head); 2998 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2999 3000 /* 3001 * After we've deleted it, do another queue sync 3002 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 3003 * running it won't find a new session in the old 3004 * BAID. It can find the NULL pointer for the BAID, 3005 * but we must not have it find a different session. 3006 */ 3007 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 3008 true, NULL, 0); 3009 } 3010 return 0; 3011 3012 out_free: 3013 kfree(baid_data); 3014 return ret; 3015 } 3016 3017 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3018 int tid, u8 queue, bool start) 3019 { 3020 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3021 struct iwl_mvm_add_sta_cmd cmd = {}; 3022 int ret; 3023 u32 status; 3024 3025 lockdep_assert_held(&mvm->mutex); 3026 3027 if (start) { 3028 mvm_sta->tfd_queue_msk |= BIT(queue); 3029 mvm_sta->tid_disable_agg &= ~BIT(tid); 3030 } else { 3031 /* In DQA-mode the queue isn't removed on agg termination */ 3032 mvm_sta->tid_disable_agg |= BIT(tid); 3033 } 3034 3035 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3036 cmd.sta_id = mvm_sta->deflink.sta_id; 3037 cmd.add_modify = STA_MODE_MODIFY; 3038 if (!iwl_mvm_has_new_tx_api(mvm)) 3039 cmd.modify_mask = STA_MODIFY_QUEUES; 3040 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3041 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3042 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3043 3044 status = ADD_STA_SUCCESS; 3045 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3046 iwl_mvm_add_sta_cmd_size(mvm), 3047 &cmd, &status); 3048 if (ret) 3049 return ret; 3050 3051 switch (status & IWL_ADD_STA_STATUS_MASK) { 3052 case ADD_STA_SUCCESS: 3053 break; 3054 default: 3055 ret = -EIO; 3056 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3057 start ? "start" : "stopp", status); 3058 break; 3059 } 3060 3061 return ret; 3062 } 3063 3064 const u8 tid_to_mac80211_ac[] = { 3065 IEEE80211_AC_BE, 3066 IEEE80211_AC_BK, 3067 IEEE80211_AC_BK, 3068 IEEE80211_AC_BE, 3069 IEEE80211_AC_VI, 3070 IEEE80211_AC_VI, 3071 IEEE80211_AC_VO, 3072 IEEE80211_AC_VO, 3073 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3074 }; 3075 3076 static const u8 tid_to_ucode_ac[] = { 3077 AC_BE, 3078 AC_BK, 3079 AC_BK, 3080 AC_BE, 3081 AC_VI, 3082 AC_VI, 3083 AC_VO, 3084 AC_VO, 3085 }; 3086 3087 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3088 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3089 { 3090 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3091 struct iwl_mvm_tid_data *tid_data; 3092 u16 normalized_ssn; 3093 u16 txq_id; 3094 int ret; 3095 3096 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3097 return -EINVAL; 3098 3099 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3100 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3101 IWL_ERR(mvm, 3102 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3103 mvmsta->tid_data[tid].state); 3104 return -ENXIO; 3105 } 3106 3107 lockdep_assert_held(&mvm->mutex); 3108 3109 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3110 iwl_mvm_has_new_tx_api(mvm)) { 3111 u8 ac = tid_to_mac80211_ac[tid]; 3112 3113 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3114 if (ret) 3115 return ret; 3116 } 3117 3118 spin_lock_bh(&mvmsta->lock); 3119 3120 /* 3121 * Note the possible cases: 3122 * 1. An enabled TXQ - TXQ needs to become agg'ed 3123 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3124 * it as reserved 3125 */ 3126 txq_id = mvmsta->tid_data[tid].txq_id; 3127 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3128 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3129 IWL_MVM_DQA_MIN_DATA_QUEUE, 3130 IWL_MVM_DQA_MAX_DATA_QUEUE); 3131 if (ret < 0) { 3132 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3133 goto out; 3134 } 3135 3136 txq_id = ret; 3137 3138 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3139 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3140 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3141 ret = -ENXIO; 3142 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3143 tid, IWL_MAX_HW_QUEUES - 1); 3144 goto out; 3145 3146 } else if (unlikely(mvm->queue_info[txq_id].status == 3147 IWL_MVM_QUEUE_SHARED)) { 3148 ret = -ENXIO; 3149 IWL_DEBUG_TX_QUEUES(mvm, 3150 "Can't start tid %d agg on shared queue!\n", 3151 tid); 3152 goto out; 3153 } 3154 3155 IWL_DEBUG_TX_QUEUES(mvm, 3156 "AGG for tid %d will be on queue #%d\n", 3157 tid, txq_id); 3158 3159 tid_data = &mvmsta->tid_data[tid]; 3160 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3161 tid_data->txq_id = txq_id; 3162 *ssn = tid_data->ssn; 3163 3164 IWL_DEBUG_TX_QUEUES(mvm, 3165 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3166 mvmsta->deflink.sta_id, tid, txq_id, 3167 tid_data->ssn, 3168 tid_data->next_reclaimed); 3169 3170 /* 3171 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3172 * to align the wrap around of ssn so we compare relevant values. 3173 */ 3174 normalized_ssn = tid_data->ssn; 3175 if (mvm->trans->trans_cfg->gen2) 3176 normalized_ssn &= 0xff; 3177 3178 if (normalized_ssn == tid_data->next_reclaimed) { 3179 tid_data->state = IWL_AGG_STARTING; 3180 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3181 } else { 3182 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3183 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3184 } 3185 3186 out: 3187 spin_unlock_bh(&mvmsta->lock); 3188 3189 return ret; 3190 } 3191 3192 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3193 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3194 bool amsdu) 3195 { 3196 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3197 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3198 unsigned int wdg_timeout = 3199 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3200 int queue, ret; 3201 bool alloc_queue = true; 3202 enum iwl_mvm_queue_status queue_status; 3203 u16 ssn; 3204 3205 struct iwl_trans_txq_scd_cfg cfg = { 3206 .sta_id = mvmsta->deflink.sta_id, 3207 .tid = tid, 3208 .frame_limit = buf_size, 3209 .aggregate = true, 3210 }; 3211 3212 /* 3213 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3214 * manager, so this function should never be called in this case. 3215 */ 3216 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3217 return -EINVAL; 3218 3219 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3220 != IWL_MAX_TID_COUNT); 3221 3222 spin_lock_bh(&mvmsta->lock); 3223 ssn = tid_data->ssn; 3224 queue = tid_data->txq_id; 3225 tid_data->state = IWL_AGG_ON; 3226 mvmsta->agg_tids |= BIT(tid); 3227 tid_data->ssn = 0xffff; 3228 tid_data->amsdu_in_ampdu_allowed = amsdu; 3229 spin_unlock_bh(&mvmsta->lock); 3230 3231 if (iwl_mvm_has_new_tx_api(mvm)) { 3232 /* 3233 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3234 * would have failed, so if we are here there is no need to 3235 * allocate a queue. 3236 * However, if aggregation size is different than the default 3237 * size, the scheduler should be reconfigured. 3238 * We cannot do this with the new TX API, so return unsupported 3239 * for now, until it will be offloaded to firmware.. 3240 * Note that if SCD default value changes - this condition 3241 * should be updated as well. 3242 */ 3243 if (buf_size < IWL_FRAME_LIMIT) 3244 return -ENOTSUPP; 3245 3246 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3247 if (ret) 3248 return -EIO; 3249 goto out; 3250 } 3251 3252 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3253 3254 queue_status = mvm->queue_info[queue].status; 3255 3256 /* Maybe there is no need to even alloc a queue... */ 3257 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3258 alloc_queue = false; 3259 3260 /* 3261 * Only reconfig the SCD for the queue if the window size has 3262 * changed from current (become smaller) 3263 */ 3264 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3265 /* 3266 * If reconfiguring an existing queue, it first must be 3267 * drained 3268 */ 3269 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3270 BIT(queue)); 3271 if (ret) { 3272 IWL_ERR(mvm, 3273 "Error draining queue before reconfig\n"); 3274 return ret; 3275 } 3276 3277 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3278 mvmsta->deflink.sta_id, tid, 3279 buf_size, ssn); 3280 if (ret) { 3281 IWL_ERR(mvm, 3282 "Error reconfiguring TXQ #%d\n", queue); 3283 return ret; 3284 } 3285 } 3286 3287 if (alloc_queue) 3288 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3289 &cfg, wdg_timeout); 3290 3291 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3292 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3293 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3294 if (ret) 3295 return -EIO; 3296 } 3297 3298 /* No need to mark as reserved */ 3299 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3300 3301 out: 3302 /* 3303 * Even though in theory the peer could have different 3304 * aggregation reorder buffer sizes for different sessions, 3305 * our ucode doesn't allow for that and has a global limit 3306 * for each station. Therefore, use the minimum of all the 3307 * aggregation sessions and our default value. 3308 */ 3309 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3310 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3311 buf_size); 3312 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3313 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3314 3315 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3316 sta->addr, tid); 3317 3318 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3319 } 3320 3321 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3322 struct iwl_mvm_sta *mvmsta, 3323 struct iwl_mvm_tid_data *tid_data) 3324 { 3325 u16 txq_id = tid_data->txq_id; 3326 3327 lockdep_assert_held(&mvm->mutex); 3328 3329 if (iwl_mvm_has_new_tx_api(mvm)) 3330 return; 3331 3332 /* 3333 * The TXQ is marked as reserved only if no traffic came through yet 3334 * This means no traffic has been sent on this TID (agg'd or not), so 3335 * we no longer have use for the queue. Since it hasn't even been 3336 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3337 * free. 3338 */ 3339 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3340 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3341 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3342 } 3343 } 3344 3345 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3346 struct ieee80211_sta *sta, u16 tid) 3347 { 3348 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3349 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3350 u16 txq_id; 3351 int err; 3352 3353 /* 3354 * If mac80211 is cleaning its state, then say that we finished since 3355 * our state has been cleared anyway. 3356 */ 3357 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3358 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3359 return 0; 3360 } 3361 3362 spin_lock_bh(&mvmsta->lock); 3363 3364 txq_id = tid_data->txq_id; 3365 3366 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3367 mvmsta->deflink.sta_id, tid, txq_id, 3368 tid_data->state); 3369 3370 mvmsta->agg_tids &= ~BIT(tid); 3371 3372 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3373 3374 switch (tid_data->state) { 3375 case IWL_AGG_ON: 3376 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3377 3378 IWL_DEBUG_TX_QUEUES(mvm, 3379 "ssn = %d, next_recl = %d\n", 3380 tid_data->ssn, tid_data->next_reclaimed); 3381 3382 tid_data->ssn = 0xffff; 3383 tid_data->state = IWL_AGG_OFF; 3384 spin_unlock_bh(&mvmsta->lock); 3385 3386 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3387 3388 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3389 return 0; 3390 case IWL_AGG_STARTING: 3391 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3392 /* 3393 * The agg session has been stopped before it was set up. This 3394 * can happen when the AddBA timer times out for example. 3395 */ 3396 3397 /* No barriers since we are under mutex */ 3398 lockdep_assert_held(&mvm->mutex); 3399 3400 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3401 tid_data->state = IWL_AGG_OFF; 3402 err = 0; 3403 break; 3404 default: 3405 IWL_ERR(mvm, 3406 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3407 mvmsta->deflink.sta_id, tid, tid_data->state); 3408 IWL_ERR(mvm, 3409 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3410 err = -EINVAL; 3411 } 3412 3413 spin_unlock_bh(&mvmsta->lock); 3414 3415 return err; 3416 } 3417 3418 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3419 struct ieee80211_sta *sta, u16 tid) 3420 { 3421 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3422 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3423 u16 txq_id; 3424 enum iwl_mvm_agg_state old_state; 3425 3426 /* 3427 * First set the agg state to OFF to avoid calling 3428 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3429 */ 3430 spin_lock_bh(&mvmsta->lock); 3431 txq_id = tid_data->txq_id; 3432 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3433 mvmsta->deflink.sta_id, tid, txq_id, 3434 tid_data->state); 3435 old_state = tid_data->state; 3436 tid_data->state = IWL_AGG_OFF; 3437 mvmsta->agg_tids &= ~BIT(tid); 3438 spin_unlock_bh(&mvmsta->lock); 3439 3440 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3441 3442 if (old_state >= IWL_AGG_ON) { 3443 iwl_mvm_drain_sta(mvm, mvmsta, true); 3444 3445 if (iwl_mvm_has_new_tx_api(mvm)) { 3446 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3447 BIT(tid))) 3448 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3449 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3450 } else { 3451 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3452 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3453 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3454 } 3455 3456 iwl_mvm_drain_sta(mvm, mvmsta, false); 3457 3458 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3459 } 3460 3461 return 0; 3462 } 3463 3464 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3465 { 3466 int i, max = -1, max_offs = -1; 3467 3468 lockdep_assert_held(&mvm->mutex); 3469 3470 /* Pick the unused key offset with the highest 'deleted' 3471 * counter. Every time a key is deleted, all the counters 3472 * are incremented and the one that was just deleted is 3473 * reset to zero. Thus, the highest counter is the one 3474 * that was deleted longest ago. Pick that one. 3475 */ 3476 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3477 if (test_bit(i, mvm->fw_key_table)) 3478 continue; 3479 if (mvm->fw_key_deleted[i] > max) { 3480 max = mvm->fw_key_deleted[i]; 3481 max_offs = i; 3482 } 3483 } 3484 3485 if (max_offs < 0) 3486 return STA_KEY_IDX_INVALID; 3487 3488 return max_offs; 3489 } 3490 3491 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3492 struct ieee80211_vif *vif, 3493 struct ieee80211_sta *sta) 3494 { 3495 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3496 3497 if (sta) 3498 return iwl_mvm_sta_from_mac80211(sta); 3499 3500 /* 3501 * The device expects GTKs for station interfaces to be 3502 * installed as GTKs for the AP station. If we have no 3503 * station ID, then use AP's station ID. 3504 */ 3505 if (vif->type == NL80211_IFTYPE_STATION && 3506 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3507 u8 sta_id = mvmvif->deflink.ap_sta_id; 3508 3509 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3510 lockdep_is_held(&mvm->mutex)); 3511 3512 /* 3513 * It is possible that the 'sta' parameter is NULL, 3514 * for example when a GTK is removed - the sta_id will then 3515 * be the AP ID, and no station was passed by mac80211. 3516 */ 3517 if (IS_ERR_OR_NULL(sta)) 3518 return NULL; 3519 3520 return iwl_mvm_sta_from_mac80211(sta); 3521 } 3522 3523 return NULL; 3524 } 3525 3526 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3527 { 3528 int i; 3529 3530 for (i = len - 1; i >= 0; i--) { 3531 if (pn1[i] > pn2[i]) 3532 return 1; 3533 if (pn1[i] < pn2[i]) 3534 return -1; 3535 } 3536 3537 return 0; 3538 } 3539 3540 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3541 u32 sta_id, 3542 struct ieee80211_key_conf *key, bool mcast, 3543 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3544 u8 key_offset, bool mfp) 3545 { 3546 union { 3547 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3548 struct iwl_mvm_add_sta_key_cmd cmd; 3549 } u = {}; 3550 __le16 key_flags; 3551 int ret; 3552 u32 status; 3553 u16 keyidx; 3554 u64 pn = 0; 3555 int i, size; 3556 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3557 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3558 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3559 new_api ? 2 : 1); 3560 3561 if (sta_id == IWL_MVM_INVALID_STA) 3562 return -EINVAL; 3563 3564 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3565 STA_KEY_FLG_KEYID_MSK; 3566 key_flags = cpu_to_le16(keyidx); 3567 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3568 3569 switch (key->cipher) { 3570 case WLAN_CIPHER_SUITE_TKIP: 3571 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3572 if (api_ver >= 2) { 3573 memcpy((void *)&u.cmd.tx_mic_key, 3574 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3575 IWL_MIC_KEY_SIZE); 3576 3577 memcpy((void *)&u.cmd.rx_mic_key, 3578 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3579 IWL_MIC_KEY_SIZE); 3580 pn = atomic64_read(&key->tx_pn); 3581 3582 } else { 3583 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3584 for (i = 0; i < 5; i++) 3585 u.cmd_v1.tkip_rx_ttak[i] = 3586 cpu_to_le16(tkip_p1k[i]); 3587 } 3588 memcpy(u.cmd.common.key, key->key, key->keylen); 3589 break; 3590 case WLAN_CIPHER_SUITE_CCMP: 3591 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3592 memcpy(u.cmd.common.key, key->key, key->keylen); 3593 if (api_ver >= 2) 3594 pn = atomic64_read(&key->tx_pn); 3595 break; 3596 case WLAN_CIPHER_SUITE_WEP104: 3597 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3598 fallthrough; 3599 case WLAN_CIPHER_SUITE_WEP40: 3600 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3601 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3602 break; 3603 case WLAN_CIPHER_SUITE_GCMP_256: 3604 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3605 fallthrough; 3606 case WLAN_CIPHER_SUITE_GCMP: 3607 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3608 memcpy(u.cmd.common.key, key->key, key->keylen); 3609 if (api_ver >= 2) 3610 pn = atomic64_read(&key->tx_pn); 3611 break; 3612 default: 3613 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3614 memcpy(u.cmd.common.key, key->key, key->keylen); 3615 } 3616 3617 if (mcast) 3618 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3619 if (mfp) 3620 key_flags |= cpu_to_le16(STA_KEY_MFP); 3621 3622 u.cmd.common.key_offset = key_offset; 3623 u.cmd.common.key_flags = key_flags; 3624 u.cmd.common.sta_id = sta_id; 3625 3626 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3627 i = 0; 3628 else 3629 i = -1; 3630 3631 for (; i < IEEE80211_NUM_TIDS; i++) { 3632 struct ieee80211_key_seq seq = {}; 3633 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3634 int rx_pn_len = 8; 3635 /* there's a hole at 2/3 in FW format depending on version */ 3636 int hole = api_ver >= 3 ? 0 : 2; 3637 3638 ieee80211_get_key_rx_seq(key, i, &seq); 3639 3640 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3641 rx_pn[0] = seq.tkip.iv16; 3642 rx_pn[1] = seq.tkip.iv16 >> 8; 3643 rx_pn[2 + hole] = seq.tkip.iv32; 3644 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3645 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3646 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3647 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3648 rx_pn = seq.hw.seq; 3649 rx_pn_len = seq.hw.seq_len; 3650 } else { 3651 rx_pn[0] = seq.ccmp.pn[0]; 3652 rx_pn[1] = seq.ccmp.pn[1]; 3653 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3654 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3655 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3656 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3657 } 3658 3659 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3660 rx_pn_len) > 0) 3661 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3662 rx_pn_len); 3663 } 3664 3665 if (api_ver >= 2) { 3666 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3667 size = sizeof(u.cmd); 3668 } else { 3669 size = sizeof(u.cmd_v1); 3670 } 3671 3672 status = ADD_STA_SUCCESS; 3673 if (cmd_flags & CMD_ASYNC) 3674 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3675 &u.cmd); 3676 else 3677 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3678 &u.cmd, &status); 3679 3680 switch (status) { 3681 case ADD_STA_SUCCESS: 3682 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3683 break; 3684 default: 3685 ret = -EIO; 3686 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3687 break; 3688 } 3689 3690 return ret; 3691 } 3692 3693 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3694 struct ieee80211_key_conf *keyconf, 3695 u8 sta_id, bool remove_key) 3696 { 3697 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3698 3699 /* verify the key details match the required command's expectations */ 3700 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3701 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3702 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3703 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3704 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3705 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3706 return -EINVAL; 3707 3708 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3709 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3710 return -EINVAL; 3711 3712 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3713 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3714 3715 if (remove_key) { 3716 /* This is a valid situation for IGTK */ 3717 if (sta_id == IWL_MVM_INVALID_STA) 3718 return 0; 3719 3720 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3721 } else { 3722 struct ieee80211_key_seq seq; 3723 const u8 *pn; 3724 3725 switch (keyconf->cipher) { 3726 case WLAN_CIPHER_SUITE_AES_CMAC: 3727 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3728 break; 3729 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3730 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3731 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3732 break; 3733 default: 3734 return -EINVAL; 3735 } 3736 3737 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3738 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3739 igtk_cmd.ctrl_flags |= 3740 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3741 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3742 pn = seq.aes_cmac.pn; 3743 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3744 ((u64) pn[4] << 8) | 3745 ((u64) pn[3] << 16) | 3746 ((u64) pn[2] << 24) | 3747 ((u64) pn[1] << 32) | 3748 ((u64) pn[0] << 40)); 3749 } 3750 3751 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3752 remove_key ? "removing" : "installing", 3753 keyconf->keyidx >= 6 ? "B" : "", 3754 keyconf->keyidx, igtk_cmd.sta_id); 3755 3756 if (!iwl_mvm_has_new_rx_api(mvm)) { 3757 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3758 .ctrl_flags = igtk_cmd.ctrl_flags, 3759 .key_id = igtk_cmd.key_id, 3760 .sta_id = igtk_cmd.sta_id, 3761 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3762 }; 3763 3764 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3765 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3766 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3767 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3768 } 3769 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3770 sizeof(igtk_cmd), &igtk_cmd); 3771 } 3772 3773 3774 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3775 struct ieee80211_vif *vif, 3776 struct ieee80211_sta *sta) 3777 { 3778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3779 3780 if (sta) 3781 return sta->addr; 3782 3783 if (vif->type == NL80211_IFTYPE_STATION && 3784 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3785 u8 sta_id = mvmvif->deflink.ap_sta_id; 3786 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3787 lockdep_is_held(&mvm->mutex)); 3788 return sta->addr; 3789 } 3790 3791 3792 return NULL; 3793 } 3794 3795 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3796 struct ieee80211_vif *vif, 3797 struct ieee80211_sta *sta, 3798 struct ieee80211_key_conf *keyconf, 3799 u8 key_offset, 3800 bool mcast) 3801 { 3802 const u8 *addr; 3803 struct ieee80211_key_seq seq; 3804 u16 p1k[5]; 3805 u32 sta_id; 3806 bool mfp = false; 3807 3808 if (sta) { 3809 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3810 3811 sta_id = mvm_sta->deflink.sta_id; 3812 mfp = sta->mfp; 3813 } else if (vif->type == NL80211_IFTYPE_AP && 3814 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3816 3817 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3818 } else { 3819 IWL_ERR(mvm, "Failed to find station id\n"); 3820 return -EINVAL; 3821 } 3822 3823 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3824 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3825 /* get phase 1 key from mac80211 */ 3826 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3827 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3828 3829 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3830 seq.tkip.iv32, p1k, 0, key_offset, 3831 mfp); 3832 } 3833 3834 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3835 0, NULL, 0, key_offset, mfp); 3836 } 3837 3838 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3839 struct ieee80211_vif *vif, 3840 struct ieee80211_sta *sta, 3841 struct ieee80211_key_conf *keyconf, 3842 u8 key_offset) 3843 { 3844 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3845 struct iwl_mvm_sta *mvm_sta; 3846 u8 sta_id = IWL_MVM_INVALID_STA; 3847 int ret; 3848 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3849 3850 lockdep_assert_held(&mvm->mutex); 3851 3852 if (vif->type != NL80211_IFTYPE_AP || 3853 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3854 /* Get the station id from the mvm local station table */ 3855 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3856 if (!mvm_sta) { 3857 IWL_ERR(mvm, "Failed to find station\n"); 3858 return -EINVAL; 3859 } 3860 sta_id = mvm_sta->deflink.sta_id; 3861 3862 /* 3863 * It is possible that the 'sta' parameter is NULL, and thus 3864 * there is a need to retrieve the sta from the local station 3865 * table. 3866 */ 3867 if (!sta) { 3868 sta = rcu_dereference_protected( 3869 mvm->fw_id_to_mac_id[sta_id], 3870 lockdep_is_held(&mvm->mutex)); 3871 if (IS_ERR_OR_NULL(sta)) { 3872 IWL_ERR(mvm, "Invalid station id\n"); 3873 return -EINVAL; 3874 } 3875 } 3876 3877 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3878 return -EINVAL; 3879 } else { 3880 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3881 3882 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3883 } 3884 3885 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3886 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3887 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3888 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3889 goto end; 3890 } 3891 3892 /* If the key_offset is not pre-assigned, we need to find a 3893 * new offset to use. In normal cases, the offset is not 3894 * pre-assigned, but during HW_RESTART we want to reuse the 3895 * same indices, so we pass them when this function is called. 3896 * 3897 * In D3 entry, we need to hardcoded the indices (because the 3898 * firmware hardcodes the PTK offset to 0). In this case, we 3899 * need to make sure we don't overwrite the hw_key_idx in the 3900 * keyconf structure, because otherwise we cannot configure 3901 * the original ones back when resuming. 3902 */ 3903 if (key_offset == STA_KEY_IDX_INVALID) { 3904 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3905 if (key_offset == STA_KEY_IDX_INVALID) 3906 return -ENOSPC; 3907 keyconf->hw_key_idx = key_offset; 3908 } 3909 3910 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3911 if (ret) 3912 goto end; 3913 3914 /* 3915 * For WEP, the same key is used for multicast and unicast. Upload it 3916 * again, using the same key offset, and now pointing the other one 3917 * to the same key slot (offset). 3918 * If this fails, remove the original as well. 3919 */ 3920 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3921 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3922 sta) { 3923 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3924 key_offset, !mcast); 3925 if (ret) { 3926 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3927 goto end; 3928 } 3929 } 3930 3931 __set_bit(key_offset, mvm->fw_key_table); 3932 3933 end: 3934 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3935 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3936 sta ? sta->addr : zero_addr, ret); 3937 return ret; 3938 } 3939 3940 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3941 struct ieee80211_vif *vif, 3942 struct ieee80211_sta *sta, 3943 struct ieee80211_key_conf *keyconf) 3944 { 3945 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3946 struct iwl_mvm_sta *mvm_sta; 3947 u8 sta_id = IWL_MVM_INVALID_STA; 3948 int ret, i; 3949 3950 lockdep_assert_held(&mvm->mutex); 3951 3952 /* Get the station from the mvm local station table */ 3953 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3954 if (mvm_sta) 3955 sta_id = mvm_sta->deflink.sta_id; 3956 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3957 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3958 3959 3960 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3961 keyconf->keyidx, sta_id); 3962 3963 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3964 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3965 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3966 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3967 3968 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3969 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3970 keyconf->hw_key_idx); 3971 return -ENOENT; 3972 } 3973 3974 /* track which key was deleted last */ 3975 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3976 if (mvm->fw_key_deleted[i] < U8_MAX) 3977 mvm->fw_key_deleted[i]++; 3978 } 3979 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3980 3981 if (sta && !mvm_sta) { 3982 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3983 return 0; 3984 } 3985 3986 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3987 if (ret) 3988 return ret; 3989 3990 /* delete WEP key twice to get rid of (now useless) offset */ 3991 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3992 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3993 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3994 3995 return ret; 3996 } 3997 3998 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3999 struct ieee80211_vif *vif, 4000 struct ieee80211_key_conf *keyconf, 4001 struct ieee80211_sta *sta, u32 iv32, 4002 u16 *phase1key) 4003 { 4004 struct iwl_mvm_sta *mvm_sta; 4005 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4006 bool mfp = sta ? sta->mfp : false; 4007 4008 rcu_read_lock(); 4009 4010 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4011 if (WARN_ON_ONCE(!mvm_sta)) 4012 goto unlock; 4013 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4014 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4015 mfp); 4016 4017 unlock: 4018 rcu_read_unlock(); 4019 } 4020 4021 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4022 struct ieee80211_sta *sta) 4023 { 4024 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4025 struct iwl_mvm_add_sta_cmd cmd = { 4026 .add_modify = STA_MODE_MODIFY, 4027 .sta_id = mvmsta->deflink.sta_id, 4028 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4029 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4030 }; 4031 int ret; 4032 4033 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4034 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4035 if (ret) 4036 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4037 } 4038 4039 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4040 struct ieee80211_sta *sta, 4041 enum ieee80211_frame_release_type reason, 4042 u16 cnt, u16 tids, bool more_data, 4043 bool single_sta_queue) 4044 { 4045 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4046 struct iwl_mvm_add_sta_cmd cmd = { 4047 .add_modify = STA_MODE_MODIFY, 4048 .sta_id = mvmsta->deflink.sta_id, 4049 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4050 .sleep_tx_count = cpu_to_le16(cnt), 4051 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4052 }; 4053 int tid, ret; 4054 unsigned long _tids = tids; 4055 4056 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4057 * Note that this field is reserved and unused by firmware not 4058 * supporting GO uAPSD, so it's safe to always do this. 4059 */ 4060 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4061 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4062 4063 /* If we're releasing frames from aggregation or dqa queues then check 4064 * if all the queues that we're releasing frames from, combined, have: 4065 * - more frames than the service period, in which case more_data 4066 * needs to be set 4067 * - fewer than 'cnt' frames, in which case we need to adjust the 4068 * firmware command (but do that unconditionally) 4069 */ 4070 if (single_sta_queue) { 4071 int remaining = cnt; 4072 int sleep_tx_count; 4073 4074 spin_lock_bh(&mvmsta->lock); 4075 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4076 struct iwl_mvm_tid_data *tid_data; 4077 u16 n_queued; 4078 4079 tid_data = &mvmsta->tid_data[tid]; 4080 4081 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4082 if (n_queued > remaining) { 4083 more_data = true; 4084 remaining = 0; 4085 break; 4086 } 4087 remaining -= n_queued; 4088 } 4089 sleep_tx_count = cnt - remaining; 4090 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4091 mvmsta->sleep_tx_count = sleep_tx_count; 4092 spin_unlock_bh(&mvmsta->lock); 4093 4094 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4095 if (WARN_ON(cnt - remaining == 0)) { 4096 ieee80211_sta_eosp(sta); 4097 return; 4098 } 4099 } 4100 4101 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4102 if (more_data) 4103 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4104 4105 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4106 mvmsta->next_status_eosp = true; 4107 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4108 } else { 4109 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4110 } 4111 4112 /* block the Tx queues until the FW updated the sleep Tx count */ 4113 iwl_trans_block_txq_ptrs(mvm->trans, true); 4114 4115 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4116 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 4117 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4118 if (ret) 4119 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4120 } 4121 4122 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4123 struct iwl_rx_cmd_buffer *rxb) 4124 { 4125 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4126 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4127 struct ieee80211_sta *sta; 4128 u32 sta_id = le32_to_cpu(notif->sta_id); 4129 4130 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4131 return; 4132 4133 rcu_read_lock(); 4134 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4135 if (!IS_ERR_OR_NULL(sta)) 4136 ieee80211_sta_eosp(sta); 4137 rcu_read_unlock(); 4138 } 4139 4140 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4141 struct iwl_mvm_sta *mvmsta, 4142 bool disable) 4143 { 4144 struct iwl_mvm_add_sta_cmd cmd = { 4145 .add_modify = STA_MODE_MODIFY, 4146 .sta_id = mvmsta->deflink.sta_id, 4147 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4148 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4149 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4150 }; 4151 int ret; 4152 4153 if (mvm->mld_api_is_used) { 4154 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4155 return; 4156 } 4157 4158 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4159 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4160 if (ret) 4161 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4162 } 4163 4164 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4165 struct ieee80211_sta *sta, 4166 bool disable) 4167 { 4168 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4169 4170 if (mvm->mld_api_is_used) { 4171 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4172 return; 4173 } 4174 4175 spin_lock_bh(&mvm_sta->lock); 4176 4177 if (mvm_sta->disable_tx == disable) { 4178 spin_unlock_bh(&mvm_sta->lock); 4179 return; 4180 } 4181 4182 mvm_sta->disable_tx = disable; 4183 4184 /* 4185 * If sta PS state is handled by mac80211, tell it to start/stop 4186 * queuing tx for this station. 4187 */ 4188 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4189 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4190 4191 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4192 4193 spin_unlock_bh(&mvm_sta->lock); 4194 } 4195 4196 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4197 struct iwl_mvm_vif *mvmvif, 4198 struct iwl_mvm_int_sta *sta, 4199 bool disable) 4200 { 4201 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4202 struct iwl_mvm_add_sta_cmd cmd = { 4203 .add_modify = STA_MODE_MODIFY, 4204 .sta_id = sta->sta_id, 4205 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4206 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4207 .mac_id_n_color = cpu_to_le32(id), 4208 }; 4209 int ret; 4210 4211 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4212 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4213 if (ret) 4214 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4215 } 4216 4217 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4218 struct iwl_mvm_vif *mvmvif, 4219 bool disable) 4220 { 4221 struct ieee80211_sta *sta; 4222 struct iwl_mvm_sta *mvm_sta; 4223 int i; 4224 4225 if (mvm->mld_api_is_used) { 4226 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable); 4227 return; 4228 } 4229 4230 rcu_read_lock(); 4231 4232 /* Block/unblock all the stations of the given mvmvif */ 4233 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4234 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4235 if (IS_ERR_OR_NULL(sta)) 4236 continue; 4237 4238 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4239 if (mvm_sta->mac_id_n_color != 4240 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4241 continue; 4242 4243 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4244 } 4245 4246 rcu_read_unlock(); 4247 4248 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4249 return; 4250 4251 /* Need to block/unblock also multicast station */ 4252 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4253 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4254 &mvmvif->deflink.mcast_sta, 4255 disable); 4256 4257 /* 4258 * Only unblock the broadcast station (FW blocks it for immediate 4259 * quiet, not the driver) 4260 */ 4261 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4262 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4263 &mvmvif->deflink.bcast_sta, 4264 disable); 4265 } 4266 4267 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4268 { 4269 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4270 struct iwl_mvm_sta *mvmsta; 4271 4272 rcu_read_lock(); 4273 4274 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4275 4276 if (mvmsta) 4277 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4278 4279 rcu_read_unlock(); 4280 } 4281 4282 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4283 { 4284 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4285 4286 /* 4287 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4288 * to align the wrap around of ssn so we compare relevant values. 4289 */ 4290 if (mvm->trans->trans_cfg->gen2) 4291 sn &= 0xff; 4292 4293 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4294 } 4295 4296 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4297 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4298 u8 *key, u32 key_len) 4299 { 4300 int ret; 4301 u16 queue; 4302 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4303 struct ieee80211_key_conf *keyconf; 4304 4305 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4306 NL80211_IFTYPE_UNSPECIFIED, 4307 IWL_STA_LINK); 4308 if (ret) 4309 return ret; 4310 4311 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4312 addr, sta, &queue, 4313 IWL_MVM_TX_FIFO_BE); 4314 if (ret) 4315 goto out; 4316 4317 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4318 if (!keyconf) { 4319 ret = -ENOBUFS; 4320 goto out; 4321 } 4322 4323 keyconf->cipher = cipher; 4324 memcpy(keyconf->key, key, key_len); 4325 keyconf->keylen = key_len; 4326 4327 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4328 0, NULL, 0, 0, true); 4329 kfree(keyconf); 4330 return 0; 4331 out: 4332 iwl_mvm_dealloc_int_sta(mvm, sta); 4333 return ret; 4334 } 4335 4336 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4337 struct ieee80211_vif *vif, 4338 u32 mac_id) 4339 { 4340 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4341 .mac_id = cpu_to_le32(mac_id), 4342 }; 4343 int ret; 4344 4345 ret = iwl_mvm_send_cmd_pdu(mvm, 4346 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4347 CMD_ASYNC, 4348 sizeof(cancel_channel_switch_cmd), 4349 &cancel_channel_switch_cmd); 4350 if (ret) 4351 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4352 } 4353