1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "iwl-debug.h" 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "iwl-csr.h" 13 #include "mvm.h" 14 #include "fw/api/rs.h" 15 #include "fw/img.h" 16 17 /* 18 * Will return 0 even if the cmd failed when RFKILL is asserted unless 19 * CMD_WANT_SKB is set in cmd->flags. 20 */ 21 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 22 { 23 int ret; 24 25 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 26 if (WARN_ON(mvm->d3_test_active)) 27 return -EIO; 28 #endif 29 30 /* 31 * Synchronous commands from this op-mode must hold 32 * the mutex, this ensures we don't try to send two 33 * (or more) synchronous commands at a time. 34 */ 35 if (!(cmd->flags & CMD_ASYNC)) 36 lockdep_assert_held(&mvm->mutex); 37 38 ret = iwl_trans_send_cmd(mvm->trans, cmd); 39 40 /* 41 * If the caller wants the SKB, then don't hide any problems, the 42 * caller might access the response buffer which will be NULL if 43 * the command failed. 44 */ 45 if (cmd->flags & CMD_WANT_SKB) 46 return ret; 47 48 /* 49 * Silently ignore failures if RFKILL is asserted or 50 * we are in suspend\resume process 51 */ 52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) 53 return 0; 54 return ret; 55 } 56 57 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 58 u32 flags, u16 len, const void *data) 59 { 60 struct iwl_host_cmd cmd = { 61 .id = id, 62 .len = { len, }, 63 .data = { data, }, 64 .flags = flags, 65 }; 66 67 return iwl_mvm_send_cmd(mvm, &cmd); 68 } 69 70 /* 71 * We assume that the caller set the status to the success value 72 */ 73 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 74 u32 *status) 75 { 76 struct iwl_rx_packet *pkt; 77 struct iwl_cmd_response *resp; 78 int ret, resp_len; 79 80 lockdep_assert_held(&mvm->mutex); 81 82 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 83 if (WARN_ON(mvm->d3_test_active)) 84 return -EIO; 85 #endif 86 87 /* 88 * Only synchronous commands can wait for status, 89 * we use WANT_SKB so the caller can't. 90 */ 91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 92 "cmd flags %x", cmd->flags)) 93 return -EINVAL; 94 95 cmd->flags |= CMD_WANT_SKB; 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 if (ret == -ERFKILL) { 99 /* 100 * The command failed because of RFKILL, don't update 101 * the status, leave it as success and return 0. 102 */ 103 return 0; 104 } else if (ret) { 105 return ret; 106 } 107 108 pkt = cmd->resp_pkt; 109 110 resp_len = iwl_rx_packet_payload_len(pkt); 111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 112 ret = -EIO; 113 goto out_free_resp; 114 } 115 116 resp = (void *)pkt->data; 117 *status = le32_to_cpu(resp->status); 118 out_free_resp: 119 iwl_free_resp(cmd); 120 return ret; 121 } 122 123 /* 124 * We assume that the caller set the status to the sucess value 125 */ 126 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 127 const void *data, u32 *status) 128 { 129 struct iwl_host_cmd cmd = { 130 .id = id, 131 .len = { len, }, 132 .data = { data, }, 133 }; 134 135 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 136 } 137 138 int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags, 139 enum nl80211_band band) 140 { 141 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 142 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 143 bool is_LB = band == NL80211_BAND_2GHZ; 144 145 if (format == RATE_MCS_LEGACY_OFDM_MSK) 146 return is_LB ? rate + IWL_FIRST_OFDM_RATE : 147 rate; 148 149 /* CCK is not allowed in HB */ 150 return is_LB ? rate : -1; 151 } 152 153 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 154 enum nl80211_band band) 155 { 156 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1; 157 int idx; 158 int band_offset = 0; 159 160 /* Legacy rate format, search for match in table */ 161 if (band != NL80211_BAND_2GHZ) 162 band_offset = IWL_FIRST_OFDM_RATE; 163 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 164 if (iwl_fw_rate_idx_to_plcp(idx) == rate) 165 return idx - band_offset; 166 167 return -1; 168 } 169 170 u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx) 171 { 172 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8) 173 /* In the new rate legacy rates are indexed: 174 * 0 - 3 for CCK and 0 - 7 for OFDM. 175 */ 176 return (rate_idx >= IWL_FIRST_OFDM_RATE ? 177 rate_idx - IWL_FIRST_OFDM_RATE : 178 rate_idx); 179 180 return iwl_fw_rate_idx_to_plcp(rate_idx); 181 } 182 183 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 184 { 185 static const u8 mac80211_ac_to_ucode_ac[] = { 186 AC_VO, 187 AC_VI, 188 AC_BE, 189 AC_BK 190 }; 191 192 return mac80211_ac_to_ucode_ac[ac]; 193 } 194 195 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 196 { 197 struct iwl_rx_packet *pkt = rxb_addr(rxb); 198 struct iwl_error_resp *err_resp = (void *)pkt->data; 199 200 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 201 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 202 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 203 le16_to_cpu(err_resp->bad_cmd_seq_num), 204 le32_to_cpu(err_resp->error_service)); 205 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 206 le64_to_cpu(err_resp->timestamp)); 207 } 208 209 /* 210 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 211 * The parameter should also be a combination of ANT_[ABC]. 212 */ 213 u8 first_antenna(u8 mask) 214 { 215 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 216 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 217 return BIT(0); 218 return BIT(ffs(mask) - 1); 219 } 220 221 #define MAX_ANT_NUM 2 222 /* 223 * Toggles between TX antennas to send the probe request on. 224 * Receives the bitmask of valid TX antennas and the *index* used 225 * for the last TX, and returns the next valid *index* to use. 226 * In order to set it in the tx_cmd, must do BIT(idx). 227 */ 228 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 229 { 230 u8 ind = last_idx; 231 int i; 232 233 for (i = 0; i < MAX_ANT_NUM; i++) { 234 ind = (ind + 1) % MAX_ANT_NUM; 235 if (valid & BIT(ind)) 236 return ind; 237 } 238 239 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 240 return last_idx; 241 } 242 243 /** 244 * iwl_mvm_send_lq_cmd() - Send link quality command 245 * @mvm: Driver data. 246 * @lq: Link quality command to send. 247 * 248 * The link quality command is sent as the last step of station creation. 249 * This is the special case in which init is set and we call a callback in 250 * this case to clear the state indicating that station creation is in 251 * progress. 252 * 253 * Returns: an error code indicating success or failure 254 */ 255 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 256 { 257 struct iwl_host_cmd cmd = { 258 .id = LQ_CMD, 259 .len = { sizeof(struct iwl_lq_cmd), }, 260 .flags = CMD_ASYNC, 261 .data = { lq, }, 262 }; 263 264 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 265 iwl_mvm_has_tlc_offload(mvm))) 266 return -EINVAL; 267 268 return iwl_mvm_send_cmd(mvm, &cmd); 269 } 270 271 /** 272 * iwl_mvm_update_smps - Get a request to change the SMPS mode 273 * @mvm: Driver data. 274 * @vif: Pointer to the ieee80211_vif structure 275 * @req_type: The part of the driver who call for a change. 276 * @smps_request: The request to change the SMPS mode. 277 * @link_id: for MLO link_id, otherwise 0 (deflink) 278 * 279 * Get a requst to change the SMPS mode, 280 * and change it according to all other requests in the driver. 281 */ 282 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 283 enum iwl_mvm_smps_type_request req_type, 284 enum ieee80211_smps_mode smps_request, 285 unsigned int link_id) 286 { 287 struct iwl_mvm_vif *mvmvif; 288 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 289 int i; 290 291 lockdep_assert_held(&mvm->mutex); 292 293 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 294 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 295 return; 296 297 if (vif->type != NL80211_IFTYPE_STATION) 298 return; 299 300 mvmvif = iwl_mvm_vif_from_mac80211(vif); 301 302 if (WARN_ON_ONCE(!mvmvif->link[link_id])) 303 return; 304 305 mvmvif->link[link_id]->smps_requests[req_type] = smps_request; 306 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 307 if (mvmvif->link[link_id]->smps_requests[i] == 308 IEEE80211_SMPS_STATIC) { 309 smps_mode = IEEE80211_SMPS_STATIC; 310 break; 311 } 312 if (mvmvif->link[link_id]->smps_requests[i] == 313 IEEE80211_SMPS_DYNAMIC) 314 smps_mode = IEEE80211_SMPS_DYNAMIC; 315 } 316 317 /* SMPS is disabled in eSR */ 318 if (mvmvif->esr_active) 319 smps_mode = IEEE80211_SMPS_OFF; 320 321 ieee80211_request_smps(vif, link_id, smps_mode); 322 } 323 324 void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm, 325 struct ieee80211_vif *vif, 326 enum iwl_mvm_smps_type_request req_type, 327 enum ieee80211_smps_mode smps_request) 328 { 329 struct ieee80211_bss_conf *link_conf; 330 unsigned int link_id; 331 332 rcu_read_lock(); 333 for_each_vif_active_link(vif, link_conf, link_id) 334 iwl_mvm_update_smps(mvm, vif, req_type, smps_request, 335 link_id); 336 rcu_read_unlock(); 337 } 338 339 static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait, 340 struct iwl_rx_packet *pkt, void *data) 341 { 342 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION); 343 344 return true; 345 } 346 347 static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear, 348 u8 cmd_ver) 349 { 350 struct iwl_system_statistics_cmd system_cmd = { 351 .cfg_mask = clear ? 352 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) : 353 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK | 354 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK), 355 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER | 356 IWL_STATS_NTFY_TYPE_ID_OPER_PART1), 357 }; 358 struct iwl_host_cmd cmd = { 359 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD), 360 .len[0] = sizeof(system_cmd), 361 .data[0] = &system_cmd, 362 }; 363 struct iwl_notification_wait stats_wait; 364 static const u16 stats_complete[] = { 365 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF), 366 }; 367 int ret; 368 369 if (cmd_ver != 1) { 370 IWL_FW_CHECK_FAILED(mvm, 371 "Invalid system statistics command version:%d\n", 372 cmd_ver); 373 return -EOPNOTSUPP; 374 } 375 376 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 377 stats_complete, ARRAY_SIZE(stats_complete), 378 NULL, NULL); 379 380 mvm->statistics_clear = clear; 381 ret = iwl_mvm_send_cmd(mvm, &cmd); 382 if (ret) { 383 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 384 return ret; 385 } 386 387 /* 500ms for OPERATIONAL, PART1 and END notification should be enough 388 * for FW to collect data from all LMACs and send 389 * STATISTICS_NOTIFICATION to host 390 */ 391 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2); 392 if (ret) 393 return ret; 394 395 if (clear) 396 iwl_mvm_accu_radio_stats(mvm); 397 398 return ret; 399 } 400 401 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 402 { 403 struct iwl_statistics_cmd scmd = { 404 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 405 }; 406 407 struct iwl_host_cmd cmd = { 408 .id = STATISTICS_CMD, 409 .len[0] = sizeof(scmd), 410 .data[0] = &scmd, 411 }; 412 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 413 WIDE_ID(SYSTEM_GROUP, 414 SYSTEM_STATISTICS_CMD), 415 IWL_FW_CMD_VER_UNKNOWN); 416 int ret; 417 418 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN) 419 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver); 420 421 /* From version 15 - STATISTICS_NOTIFICATION, the reply for 422 * STATISTICS_CMD is empty, and the response is with 423 * STATISTICS_NOTIFICATION notification 424 */ 425 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 426 STATISTICS_NOTIFICATION, 0) < 15) { 427 cmd.flags = CMD_WANT_SKB; 428 429 ret = iwl_mvm_send_cmd(mvm, &cmd); 430 if (ret) 431 return ret; 432 433 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 434 iwl_free_resp(&cmd); 435 } else { 436 struct iwl_notification_wait stats_wait; 437 static const u16 stats_complete[] = { 438 STATISTICS_NOTIFICATION, 439 }; 440 441 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 442 stats_complete, ARRAY_SIZE(stats_complete), 443 iwl_wait_stats_complete, NULL); 444 445 ret = iwl_mvm_send_cmd(mvm, &cmd); 446 if (ret) { 447 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 448 return ret; 449 } 450 451 /* 200ms should be enough for FW to collect data from all 452 * LMACs and send STATISTICS_NOTIFICATION to host 453 */ 454 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5); 455 if (ret) 456 return ret; 457 } 458 459 if (clear) 460 iwl_mvm_accu_radio_stats(mvm); 461 462 return 0; 463 } 464 465 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 466 { 467 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 468 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 469 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 470 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 471 } 472 473 struct iwl_mvm_diversity_iter_data { 474 struct iwl_mvm_phy_ctxt *ctxt; 475 bool result; 476 }; 477 478 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 479 struct ieee80211_vif *vif) 480 { 481 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 482 struct iwl_mvm_diversity_iter_data *data = _data; 483 int i, link_id; 484 485 for_each_mvm_vif_valid_link(mvmvif, link_id) { 486 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 487 488 if (link_info->phy_ctxt != data->ctxt) 489 continue; 490 491 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 492 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC || 493 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) { 494 data->result = false; 495 break; 496 } 497 } 498 } 499 } 500 501 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm, 502 struct iwl_mvm_phy_ctxt *ctxt) 503 { 504 struct iwl_mvm_diversity_iter_data data = { 505 .ctxt = ctxt, 506 .result = true, 507 }; 508 509 lockdep_assert_held(&mvm->mutex); 510 511 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 512 return false; 513 514 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 515 return false; 516 517 if (mvm->cfg->rx_with_siso_diversity) 518 return false; 519 520 ieee80211_iterate_active_interfaces_atomic( 521 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 522 iwl_mvm_diversity_iter, &data); 523 524 return data.result; 525 } 526 527 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 528 bool low_latency, u16 mac_id) 529 { 530 struct iwl_mac_low_latency_cmd cmd = { 531 .mac_id = cpu_to_le32(mac_id) 532 }; 533 534 if (!fw_has_capa(&mvm->fw->ucode_capa, 535 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 536 return; 537 538 if (low_latency) { 539 /* currently we don't care about the direction */ 540 cmd.low_latency_rx = 1; 541 cmd.low_latency_tx = 1; 542 } 543 544 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD), 545 0, sizeof(cmd), &cmd)) 546 IWL_ERR(mvm, "Failed to send low latency command\n"); 547 } 548 549 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 550 bool low_latency, 551 enum iwl_mvm_low_latency_cause cause) 552 { 553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 554 int res; 555 bool prev; 556 557 lockdep_assert_held(&mvm->mutex); 558 559 prev = iwl_mvm_vif_low_latency(mvmvif); 560 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 561 562 low_latency = iwl_mvm_vif_low_latency(mvmvif); 563 564 if (low_latency == prev) 565 return 0; 566 567 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 568 569 res = iwl_mvm_update_quotas(mvm, false, NULL); 570 if (res) 571 return res; 572 573 iwl_mvm_bt_coex_vif_change(mvm); 574 575 return iwl_mvm_power_update_mac(mvm); 576 } 577 578 struct iwl_mvm_low_latency_iter { 579 bool result; 580 bool result_per_band[NUM_NL80211_BANDS]; 581 }; 582 583 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 584 { 585 struct iwl_mvm_low_latency_iter *result = _data; 586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 587 enum nl80211_band band; 588 589 if (iwl_mvm_vif_low_latency(mvmvif)) { 590 result->result = true; 591 592 if (!mvmvif->deflink.phy_ctxt) 593 return; 594 595 band = mvmvif->deflink.phy_ctxt->channel->band; 596 result->result_per_band[band] = true; 597 } 598 } 599 600 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 601 { 602 struct iwl_mvm_low_latency_iter data = {}; 603 604 ieee80211_iterate_active_interfaces_atomic( 605 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 606 iwl_mvm_ll_iter, &data); 607 608 return data.result; 609 } 610 611 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 612 { 613 struct iwl_mvm_low_latency_iter data = {}; 614 615 ieee80211_iterate_active_interfaces_atomic( 616 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 617 iwl_mvm_ll_iter, &data); 618 619 return data.result_per_band[band]; 620 } 621 622 struct iwl_bss_iter_data { 623 struct ieee80211_vif *vif; 624 bool error; 625 }; 626 627 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 628 struct ieee80211_vif *vif) 629 { 630 struct iwl_bss_iter_data *data = _data; 631 632 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 633 return; 634 635 if (data->vif) { 636 data->error = true; 637 return; 638 } 639 640 data->vif = vif; 641 } 642 643 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 644 { 645 struct iwl_bss_iter_data bss_iter_data = {}; 646 647 ieee80211_iterate_active_interfaces_atomic( 648 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 649 iwl_mvm_bss_iface_iterator, &bss_iter_data); 650 651 if (bss_iter_data.error) { 652 IWL_ERR(mvm, "More than one managed interface active!\n"); 653 return ERR_PTR(-EINVAL); 654 } 655 656 return bss_iter_data.vif; 657 } 658 659 struct iwl_bss_find_iter_data { 660 struct ieee80211_vif *vif; 661 u32 macid; 662 }; 663 664 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 665 struct ieee80211_vif *vif) 666 { 667 struct iwl_bss_find_iter_data *data = _data; 668 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 669 670 if (mvmvif->id == data->macid) 671 data->vif = vif; 672 } 673 674 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 675 { 676 struct iwl_bss_find_iter_data data = { 677 .macid = macid, 678 }; 679 680 lockdep_assert_held(&mvm->mutex); 681 682 ieee80211_iterate_active_interfaces_atomic( 683 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 684 iwl_mvm_bss_find_iface_iterator, &data); 685 686 return data.vif; 687 } 688 689 struct iwl_sta_iter_data { 690 bool assoc; 691 }; 692 693 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 694 struct ieee80211_vif *vif) 695 { 696 struct iwl_sta_iter_data *data = _data; 697 698 if (vif->type != NL80211_IFTYPE_STATION) 699 return; 700 701 if (vif->cfg.assoc) 702 data->assoc = true; 703 } 704 705 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 706 { 707 struct iwl_sta_iter_data data = { 708 .assoc = false, 709 }; 710 711 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 712 IEEE80211_IFACE_ITER_NORMAL, 713 iwl_mvm_sta_iface_iterator, 714 &data); 715 return data.assoc; 716 } 717 718 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 719 struct ieee80211_vif *vif, 720 bool tdls, bool cmd_q) 721 { 722 struct iwl_fw_dbg_trigger_tlv *trigger; 723 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 724 unsigned int default_timeout = cmd_q ? 725 IWL_DEF_WD_TIMEOUT : 726 mvm->trans->trans_cfg->base_params->wd_timeout; 727 728 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 729 /* 730 * We can't know when the station is asleep or awake, so we 731 * must disable the queue hang detection. 732 */ 733 if (fw_has_capa(&mvm->fw->ucode_capa, 734 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 735 vif && vif->type == NL80211_IFTYPE_AP) 736 return IWL_WATCHDOG_DISABLED; 737 return default_timeout; 738 } 739 740 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 741 txq_timer = (void *)trigger->data; 742 743 if (tdls) 744 return le32_to_cpu(txq_timer->tdls); 745 746 if (cmd_q) 747 return le32_to_cpu(txq_timer->command_queue); 748 749 if (WARN_ON(!vif)) 750 return default_timeout; 751 752 switch (ieee80211_vif_type_p2p(vif)) { 753 case NL80211_IFTYPE_ADHOC: 754 return le32_to_cpu(txq_timer->ibss); 755 case NL80211_IFTYPE_STATION: 756 return le32_to_cpu(txq_timer->bss); 757 case NL80211_IFTYPE_AP: 758 return le32_to_cpu(txq_timer->softap); 759 case NL80211_IFTYPE_P2P_CLIENT: 760 return le32_to_cpu(txq_timer->p2p_client); 761 case NL80211_IFTYPE_P2P_GO: 762 return le32_to_cpu(txq_timer->p2p_go); 763 case NL80211_IFTYPE_P2P_DEVICE: 764 return le32_to_cpu(txq_timer->p2p_device); 765 case NL80211_IFTYPE_MONITOR: 766 return default_timeout; 767 default: 768 WARN_ON(1); 769 return mvm->trans->trans_cfg->base_params->wd_timeout; 770 } 771 } 772 773 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 774 const char *errmsg) 775 { 776 struct iwl_fw_dbg_trigger_tlv *trig; 777 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 778 779 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 780 FW_DBG_TRIGGER_MLME); 781 if (!trig) 782 goto out; 783 784 trig_mlme = (void *)trig->data; 785 786 if (trig_mlme->stop_connection_loss && 787 --trig_mlme->stop_connection_loss) 788 goto out; 789 790 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 791 792 out: 793 ieee80211_connection_loss(vif); 794 } 795 796 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 797 struct ieee80211_vif *vif, 798 const struct ieee80211_sta *sta, 799 u16 tid) 800 { 801 struct iwl_fw_dbg_trigger_tlv *trig; 802 struct iwl_fw_dbg_trigger_ba *ba_trig; 803 804 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 805 FW_DBG_TRIGGER_BA); 806 if (!trig) 807 return; 808 809 ba_trig = (void *)trig->data; 810 811 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 812 return; 813 814 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 815 "Frame from %pM timed out, tid %d", 816 sta->addr, tid); 817 } 818 819 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 820 { 821 if (!elapsed) 822 return 0; 823 824 return (100 * airtime / elapsed) / USEC_PER_MSEC; 825 } 826 827 static enum iwl_mvm_traffic_load 828 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 829 { 830 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 831 832 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 833 return IWL_MVM_TRAFFIC_HIGH; 834 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 835 return IWL_MVM_TRAFFIC_MEDIUM; 836 837 return IWL_MVM_TRAFFIC_LOW; 838 } 839 840 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 841 { 842 struct iwl_mvm *mvm = _data; 843 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 844 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 845 846 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 847 return; 848 849 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 850 851 if (!mvm->tcm.result.change[mvmvif->id] && 852 prev == low_latency) { 853 iwl_mvm_update_quotas(mvm, false, NULL); 854 return; 855 } 856 857 if (prev != low_latency) { 858 /* this sends traffic load and updates quota as well */ 859 iwl_mvm_update_low_latency(mvm, vif, low_latency, 860 LOW_LATENCY_TRAFFIC); 861 } else { 862 iwl_mvm_update_quotas(mvm, false, NULL); 863 } 864 } 865 866 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 867 { 868 mutex_lock(&mvm->mutex); 869 870 ieee80211_iterate_active_interfaces( 871 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 872 iwl_mvm_tcm_iter, mvm); 873 874 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 875 iwl_mvm_config_scan(mvm); 876 877 mutex_unlock(&mvm->mutex); 878 } 879 880 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 881 { 882 struct iwl_mvm *mvm; 883 struct iwl_mvm_vif *mvmvif; 884 struct ieee80211_vif *vif; 885 886 mvmvif = container_of(wk, struct iwl_mvm_vif, 887 uapsd_nonagg_detected_wk.work); 888 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 889 mvm = mvmvif->mvm; 890 891 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 892 return; 893 894 /* remember that this AP is broken */ 895 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 896 vif->bss_conf.bssid, ETH_ALEN); 897 mvm->uapsd_noagg_bssid_write_idx++; 898 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 899 mvm->uapsd_noagg_bssid_write_idx = 0; 900 901 iwl_mvm_connection_loss(mvm, vif, 902 "AP isn't using AMPDU with uAPSD enabled"); 903 } 904 905 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 906 struct ieee80211_vif *vif) 907 { 908 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 909 910 if (vif->type != NL80211_IFTYPE_STATION) 911 return; 912 913 if (!vif->cfg.assoc) 914 return; 915 916 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 917 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 918 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 919 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) 920 return; 921 922 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 923 return; 924 925 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 926 IWL_INFO(mvm, 927 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 928 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 929 15 * HZ); 930 } 931 932 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 933 unsigned int elapsed, 934 int mac) 935 { 936 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 937 u64 tpt; 938 unsigned long rate; 939 struct ieee80211_vif *vif; 940 941 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 942 943 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 944 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 945 return; 946 947 if (iwl_mvm_has_new_rx_api(mvm)) { 948 tpt = 8 * bytes; /* kbps */ 949 do_div(tpt, elapsed); 950 rate *= 1000; /* kbps */ 951 if (tpt < 22 * rate / 100) 952 return; 953 } else { 954 /* 955 * the rate here is actually the threshold, in 100Kbps units, 956 * so do the needed conversion from bytes to 100Kbps: 957 * 100kb = bits / (100 * 1000), 958 * 100kbps = 100kb / (msecs / 1000) == 959 * (bits / (100 * 1000)) / (msecs / 1000) == 960 * bits / (100 * msecs) 961 */ 962 tpt = (8 * bytes); 963 do_div(tpt, elapsed * 100); 964 if (tpt < rate) 965 return; 966 } 967 968 rcu_read_lock(); 969 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 970 if (vif) 971 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 972 rcu_read_unlock(); 973 } 974 975 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 976 struct ieee80211_vif *vif) 977 { 978 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 979 u32 *band = _data; 980 981 if (!mvmvif->deflink.phy_ctxt) 982 return; 983 984 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band; 985 } 986 987 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 988 unsigned long ts, 989 bool handle_uapsd) 990 { 991 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 992 unsigned int uapsd_elapsed = 993 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 994 u32 total_airtime = 0; 995 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 996 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 997 int ac, mac, i; 998 bool low_latency = false; 999 enum iwl_mvm_traffic_load load, band_load; 1000 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1001 1002 if (handle_ll) 1003 mvm->tcm.ll_ts = ts; 1004 if (handle_uapsd) 1005 mvm->tcm.uapsd_nonagg_ts = ts; 1006 1007 mvm->tcm.result.elapsed = elapsed; 1008 1009 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1010 IEEE80211_IFACE_ITER_NORMAL, 1011 iwl_mvm_tcm_iterator, 1012 &band); 1013 1014 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1015 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1016 u32 vo_vi_pkts = 0; 1017 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1018 1019 total_airtime += airtime; 1020 band_airtime[band[mac]] += airtime; 1021 1022 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1023 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1024 mvm->tcm.result.load[mac] = load; 1025 mvm->tcm.result.airtime[mac] = airtime; 1026 1027 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1028 vo_vi_pkts += mdata->rx.pkts[ac] + 1029 mdata->tx.pkts[ac]; 1030 1031 /* enable immediately with enough packets but defer disabling */ 1032 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1033 mvm->tcm.result.low_latency[mac] = true; 1034 else if (handle_ll) 1035 mvm->tcm.result.low_latency[mac] = false; 1036 1037 if (handle_ll) { 1038 /* clear old data */ 1039 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1040 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1041 } 1042 low_latency |= mvm->tcm.result.low_latency[mac]; 1043 1044 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1045 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1046 mac); 1047 /* clear old data */ 1048 if (handle_uapsd) 1049 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1050 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1051 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1052 } 1053 1054 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1055 mvm->tcm.result.global_load = load; 1056 1057 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1058 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1059 mvm->tcm.result.band_load[i] = band_load; 1060 } 1061 1062 /* 1063 * If the current load isn't low we need to force re-evaluation 1064 * in the TCM period, so that we can return to low load if there 1065 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1066 * triggered by traffic). 1067 */ 1068 if (load != IWL_MVM_TRAFFIC_LOW) 1069 return MVM_TCM_PERIOD; 1070 /* 1071 * If low-latency is active we need to force re-evaluation after 1072 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1073 * when there's no traffic at all. 1074 */ 1075 if (low_latency) 1076 return MVM_LL_PERIOD; 1077 /* 1078 * Otherwise, we don't need to run the work struct because we're 1079 * in the default "idle" state - traffic indication is low (which 1080 * also covers the "no traffic" case) and low-latency is disabled 1081 * so there's no state that may need to be disabled when there's 1082 * no traffic at all. 1083 * 1084 * Note that this has no impact on the regular scheduling of the 1085 * updates triggered by traffic - those happen whenever one of the 1086 * two timeouts expire (if there's traffic at all.) 1087 */ 1088 return 0; 1089 } 1090 1091 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1092 { 1093 unsigned long ts = jiffies; 1094 bool handle_uapsd = 1095 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1096 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1097 1098 spin_lock(&mvm->tcm.lock); 1099 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1100 spin_unlock(&mvm->tcm.lock); 1101 return; 1102 } 1103 spin_unlock(&mvm->tcm.lock); 1104 1105 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1106 mutex_lock(&mvm->mutex); 1107 if (iwl_mvm_request_statistics(mvm, true)) 1108 handle_uapsd = false; 1109 mutex_unlock(&mvm->mutex); 1110 } 1111 1112 spin_lock(&mvm->tcm.lock); 1113 /* re-check if somebody else won the recheck race */ 1114 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1115 /* calculate statistics */ 1116 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1117 handle_uapsd); 1118 1119 /* the memset needs to be visible before the timestamp */ 1120 smp_mb(); 1121 mvm->tcm.ts = ts; 1122 if (work_delay) 1123 schedule_delayed_work(&mvm->tcm.work, work_delay); 1124 } 1125 spin_unlock(&mvm->tcm.lock); 1126 1127 iwl_mvm_tcm_results(mvm); 1128 } 1129 1130 void iwl_mvm_tcm_work(struct work_struct *work) 1131 { 1132 struct delayed_work *delayed_work = to_delayed_work(work); 1133 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1134 tcm.work); 1135 1136 iwl_mvm_recalc_tcm(mvm); 1137 } 1138 1139 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1140 { 1141 spin_lock_bh(&mvm->tcm.lock); 1142 mvm->tcm.paused = true; 1143 spin_unlock_bh(&mvm->tcm.lock); 1144 if (with_cancel) 1145 cancel_delayed_work_sync(&mvm->tcm.work); 1146 } 1147 1148 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1149 { 1150 int mac; 1151 bool low_latency = false; 1152 1153 spin_lock_bh(&mvm->tcm.lock); 1154 mvm->tcm.ts = jiffies; 1155 mvm->tcm.ll_ts = jiffies; 1156 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1157 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1158 1159 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1160 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1161 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1162 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1163 1164 if (mvm->tcm.result.low_latency[mac]) 1165 low_latency = true; 1166 } 1167 /* The TCM data needs to be reset before "paused" flag changes */ 1168 smp_mb(); 1169 mvm->tcm.paused = false; 1170 1171 /* 1172 * if the current load is not low or low latency is active, force 1173 * re-evaluation to cover the case of no traffic. 1174 */ 1175 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1176 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1177 else if (low_latency) 1178 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1179 1180 spin_unlock_bh(&mvm->tcm.lock); 1181 } 1182 1183 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1184 { 1185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1186 1187 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1188 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1189 } 1190 1191 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1192 { 1193 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1194 1195 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1196 } 1197 1198 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1199 { 1200 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1201 1202 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1203 mvm->trans->cfg->gp2_reg_addr) 1204 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1205 1206 return iwl_read_prph(mvm->trans, reg_addr); 1207 } 1208 1209 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, 1210 u32 *gp2, u64 *boottime, ktime_t *realtime) 1211 { 1212 bool ps_disabled; 1213 1214 lockdep_assert_held(&mvm->mutex); 1215 1216 /* Disable power save when reading GP2 */ 1217 ps_disabled = mvm->ps_disabled; 1218 if (!ps_disabled) { 1219 mvm->ps_disabled = true; 1220 iwl_mvm_power_update_device(mvm); 1221 } 1222 1223 *gp2 = iwl_mvm_get_systime(mvm); 1224 1225 if (clock_type == CLOCK_BOOTTIME && boottime) 1226 *boottime = ktime_get_boottime_ns(); 1227 else if (clock_type == CLOCK_REALTIME && realtime) 1228 *realtime = ktime_get_real(); 1229 1230 if (!ps_disabled) { 1231 mvm->ps_disabled = ps_disabled; 1232 iwl_mvm_power_update_device(mvm); 1233 } 1234 } 1235 1236 /* Find if at least two links from different vifs use same channel 1237 * FIXME: consider having a refcount array in struct iwl_mvm_vif for 1238 * used phy_ctxt ids. 1239 */ 1240 bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1, 1241 struct iwl_mvm_vif *vif2) 1242 { 1243 unsigned int i, j; 1244 1245 for_each_mvm_vif_valid_link(vif1, i) { 1246 for_each_mvm_vif_valid_link(vif2, j) { 1247 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt) 1248 return true; 1249 } 1250 } 1251 1252 return false; 1253 } 1254 1255 bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif) 1256 { 1257 unsigned int i; 1258 1259 /* FIXME: can it fail when phy_ctxt is assigned? */ 1260 for_each_mvm_vif_valid_link(mvmvif, i) { 1261 if (mvmvif->link[i]->phy_ctxt && 1262 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX) 1263 return true; 1264 } 1265 1266 return false; 1267 } 1268