1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2022 - 2024 Intel Corporation 4 */ 5 #include "mvm.h" 6 #include "time-event.h" 7 8 #define HANDLE_ESR_REASONS(HOW) \ 9 HOW(BLOCKED_PREVENTION) \ 10 HOW(BLOCKED_WOWLAN) \ 11 HOW(BLOCKED_TPT) \ 12 HOW(BLOCKED_FW) \ 13 HOW(BLOCKED_NON_BSS) \ 14 HOW(BLOCKED_ROC) \ 15 HOW(BLOCKED_TMP_NON_BSS) \ 16 HOW(EXIT_MISSED_BEACON) \ 17 HOW(EXIT_LOW_RSSI) \ 18 HOW(EXIT_COEX) \ 19 HOW(EXIT_BANDWIDTH) \ 20 HOW(EXIT_CSA) \ 21 HOW(EXIT_LINK_USAGE) \ 22 HOW(EXIT_FAIL_ENTRY) 23 24 static const char *const iwl_mvm_esr_states_names[] = { 25 #define NAME_ENTRY(x) [ilog2(IWL_MVM_ESR_##x)] = #x, 26 HANDLE_ESR_REASONS(NAME_ENTRY) 27 }; 28 29 const char *iwl_get_esr_state_string(enum iwl_mvm_esr_state state) 30 { 31 int offs = ilog2(state); 32 33 if (offs >= ARRAY_SIZE(iwl_mvm_esr_states_names) || 34 !iwl_mvm_esr_states_names[offs]) 35 return "UNKNOWN"; 36 37 return iwl_mvm_esr_states_names[offs]; 38 } 39 40 static void iwl_mvm_print_esr_state(struct iwl_mvm *mvm, u32 mask) 41 { 42 #define NAME_FMT(x) "%s" 43 #define NAME_PR(x) (mask & IWL_MVM_ESR_##x) ? "[" #x "]" : "", 44 IWL_DEBUG_INFO(mvm, 45 "EMLSR state = " HANDLE_ESR_REASONS(NAME_FMT) 46 " (0x%x)\n", 47 HANDLE_ESR_REASONS(NAME_PR) 48 mask); 49 #undef NAME_FMT 50 #undef NAME_PR 51 } 52 53 static u32 iwl_mvm_get_free_fw_link_id(struct iwl_mvm *mvm, 54 struct iwl_mvm_vif *mvm_vif) 55 { 56 u32 i; 57 58 lockdep_assert_held(&mvm->mutex); 59 60 for (i = 0; i < ARRAY_SIZE(mvm->link_id_to_link_conf); i++) 61 if (!rcu_access_pointer(mvm->link_id_to_link_conf[i])) 62 return i; 63 64 return IWL_MVM_FW_LINK_ID_INVALID; 65 } 66 67 static int iwl_mvm_link_cmd_send(struct iwl_mvm *mvm, 68 struct iwl_link_config_cmd *cmd, 69 enum iwl_ctxt_action action) 70 { 71 int ret; 72 73 cmd->action = cpu_to_le32(action); 74 ret = iwl_mvm_send_cmd_pdu(mvm, 75 WIDE_ID(MAC_CONF_GROUP, LINK_CONFIG_CMD), 0, 76 sizeof(*cmd), cmd); 77 if (ret) 78 IWL_ERR(mvm, "Failed to send LINK_CONFIG_CMD (action:%d): %d\n", 79 action, ret); 80 return ret; 81 } 82 83 int iwl_mvm_set_link_mapping(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 84 struct ieee80211_bss_conf *link_conf) 85 { 86 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 87 struct iwl_mvm_vif_link_info *link_info = 88 mvmvif->link[link_conf->link_id]; 89 90 if (link_info->fw_link_id == IWL_MVM_FW_LINK_ID_INVALID) { 91 link_info->fw_link_id = iwl_mvm_get_free_fw_link_id(mvm, 92 mvmvif); 93 if (link_info->fw_link_id >= 94 ARRAY_SIZE(mvm->link_id_to_link_conf)) 95 return -EINVAL; 96 97 rcu_assign_pointer(mvm->link_id_to_link_conf[link_info->fw_link_id], 98 link_conf); 99 } 100 101 return 0; 102 } 103 104 int iwl_mvm_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 105 struct ieee80211_bss_conf *link_conf) 106 { 107 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 108 unsigned int link_id = link_conf->link_id; 109 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 110 struct iwl_link_config_cmd cmd = {}; 111 unsigned int cmd_id = WIDE_ID(MAC_CONF_GROUP, LINK_CONFIG_CMD); 112 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1); 113 int ret; 114 115 if (WARN_ON_ONCE(!link_info)) 116 return -EINVAL; 117 118 ret = iwl_mvm_set_link_mapping(mvm, vif, link_conf); 119 if (ret) 120 return ret; 121 122 /* Update SF - Disable if needed. if this fails, SF might still be on 123 * while many macs are bound, which is forbidden - so fail the binding. 124 */ 125 if (iwl_mvm_sf_update(mvm, vif, false)) 126 return -EINVAL; 127 128 cmd.link_id = cpu_to_le32(link_info->fw_link_id); 129 cmd.mac_id = cpu_to_le32(mvmvif->id); 130 cmd.spec_link_id = link_conf->link_id; 131 WARN_ON_ONCE(link_info->phy_ctxt); 132 cmd.phy_id = cpu_to_le32(FW_CTXT_INVALID); 133 134 memcpy(cmd.local_link_addr, link_conf->addr, ETH_ALEN); 135 136 if (vif->type == NL80211_IFTYPE_ADHOC && link_conf->bssid) 137 memcpy(cmd.ibss_bssid_addr, link_conf->bssid, ETH_ALEN); 138 139 if (cmd_ver < 2) 140 cmd.listen_lmac = cpu_to_le32(link_info->listen_lmac); 141 142 return iwl_mvm_link_cmd_send(mvm, &cmd, FW_CTXT_ACTION_ADD); 143 } 144 145 struct iwl_mvm_esr_iter_data { 146 struct ieee80211_vif *vif; 147 unsigned int link_id; 148 bool lift_block; 149 }; 150 151 static void iwl_mvm_esr_vif_iterator(void *_data, u8 *mac, 152 struct ieee80211_vif *vif) 153 { 154 struct iwl_mvm_esr_iter_data *data = _data; 155 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 156 int link_id; 157 158 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) 159 return; 160 161 for_each_mvm_vif_valid_link(mvmvif, link_id) { 162 struct iwl_mvm_vif_link_info *link_info = 163 mvmvif->link[link_id]; 164 if (vif == data->vif && link_id == data->link_id) 165 continue; 166 if (link_info->active) 167 data->lift_block = false; 168 } 169 } 170 171 int iwl_mvm_esr_non_bss_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 172 unsigned int link_id, bool active) 173 { 174 /* An active link of a non-station vif blocks EMLSR. Upon activation 175 * block EMLSR on the bss vif. Upon deactivation, check if this link 176 * was the last non-station link active, and if so unblock the bss vif 177 */ 178 struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm); 179 struct iwl_mvm_esr_iter_data data = { 180 .vif = vif, 181 .link_id = link_id, 182 .lift_block = true, 183 }; 184 185 if (IS_ERR_OR_NULL(bss_vif)) 186 return 0; 187 188 if (active) 189 return iwl_mvm_block_esr_sync(mvm, bss_vif, 190 IWL_MVM_ESR_BLOCKED_NON_BSS); 191 192 ieee80211_iterate_active_interfaces(mvm->hw, 193 IEEE80211_IFACE_ITER_NORMAL, 194 iwl_mvm_esr_vif_iterator, &data); 195 if (data.lift_block) { 196 mutex_lock(&mvm->mutex); 197 iwl_mvm_unblock_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_NON_BSS); 198 mutex_unlock(&mvm->mutex); 199 } 200 201 return 0; 202 } 203 204 int iwl_mvm_link_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 205 struct ieee80211_bss_conf *link_conf, 206 u32 changes, bool active) 207 { 208 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 209 unsigned int link_id = link_conf->link_id; 210 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 211 struct iwl_mvm_phy_ctxt *phyctxt; 212 struct iwl_link_config_cmd cmd = {}; 213 u32 ht_flag, flags = 0, flags_mask = 0; 214 int ret; 215 unsigned int cmd_id = WIDE_ID(MAC_CONF_GROUP, LINK_CONFIG_CMD); 216 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1); 217 218 if (WARN_ON_ONCE(!link_info || 219 link_info->fw_link_id == IWL_MVM_FW_LINK_ID_INVALID)) 220 return -EINVAL; 221 222 if (changes & LINK_CONTEXT_MODIFY_ACTIVE) { 223 /* When activating a link, phy context should be valid; 224 * when deactivating a link, it also should be valid since 225 * the link was active before. So, do nothing in this case. 226 * Since a link is added first with FW_CTXT_INVALID, then we 227 * can get here in case it's removed before it was activated. 228 */ 229 if (!link_info->phy_ctxt) 230 return 0; 231 232 /* Catch early if driver tries to activate or deactivate a link 233 * twice. 234 */ 235 WARN_ON_ONCE(active == link_info->active); 236 237 /* When deactivating a link session protection should 238 * be stopped. Also let the firmware know if we can't Tx. 239 */ 240 if (!active && vif->type == NL80211_IFTYPE_STATION) { 241 iwl_mvm_stop_session_protection(mvm, vif); 242 if (link_info->csa_block_tx) { 243 cmd.block_tx = 1; 244 link_info->csa_block_tx = false; 245 } 246 } 247 } 248 249 cmd.link_id = cpu_to_le32(link_info->fw_link_id); 250 251 /* The phy_id, link address and listen_lmac can be modified only until 252 * the link becomes active, otherwise they will be ignored. 253 */ 254 phyctxt = link_info->phy_ctxt; 255 if (phyctxt) 256 cmd.phy_id = cpu_to_le32(phyctxt->id); 257 else 258 cmd.phy_id = cpu_to_le32(FW_CTXT_INVALID); 259 cmd.mac_id = cpu_to_le32(mvmvif->id); 260 261 memcpy(cmd.local_link_addr, link_conf->addr, ETH_ALEN); 262 263 cmd.active = cpu_to_le32(active); 264 265 if (vif->type == NL80211_IFTYPE_ADHOC && link_conf->bssid) 266 memcpy(cmd.ibss_bssid_addr, link_conf->bssid, ETH_ALEN); 267 268 iwl_mvm_set_fw_basic_rates(mvm, vif, link_info, 269 &cmd.cck_rates, &cmd.ofdm_rates); 270 271 cmd.cck_short_preamble = cpu_to_le32(link_conf->use_short_preamble); 272 cmd.short_slot = cpu_to_le32(link_conf->use_short_slot); 273 274 /* The fw does not distinguish between ht and fat */ 275 ht_flag = LINK_PROT_FLG_HT_PROT | LINK_PROT_FLG_FAT_PROT; 276 iwl_mvm_set_fw_protection_flags(mvm, vif, link_conf, 277 &cmd.protection_flags, 278 ht_flag, LINK_PROT_FLG_TGG_PROTECT); 279 280 iwl_mvm_set_fw_qos_params(mvm, vif, link_conf, cmd.ac, 281 &cmd.qos_flags); 282 283 284 cmd.bi = cpu_to_le32(link_conf->beacon_int); 285 cmd.dtim_interval = cpu_to_le32(link_conf->beacon_int * 286 link_conf->dtim_period); 287 288 if (!link_conf->he_support || iwlwifi_mod_params.disable_11ax || 289 (vif->type == NL80211_IFTYPE_STATION && !vif->cfg.assoc)) { 290 changes &= ~LINK_CONTEXT_MODIFY_HE_PARAMS; 291 goto send_cmd; 292 } 293 294 cmd.htc_trig_based_pkt_ext = link_conf->htc_trig_based_pkt_ext; 295 296 if (link_conf->uora_exists) { 297 cmd.rand_alloc_ecwmin = 298 link_conf->uora_ocw_range & 0x7; 299 cmd.rand_alloc_ecwmax = 300 (link_conf->uora_ocw_range >> 3) & 0x7; 301 } 302 303 /* ap_sta may be NULL if we're disconnecting */ 304 if (changes & LINK_CONTEXT_MODIFY_HE_PARAMS && mvmvif->ap_sta) { 305 struct ieee80211_link_sta *link_sta = 306 link_sta_dereference_check(mvmvif->ap_sta, link_id); 307 308 if (!WARN_ON(!link_sta) && link_sta->he_cap.has_he && 309 link_sta->he_cap.he_cap_elem.mac_cap_info[5] & 310 IEEE80211_HE_MAC_CAP5_OM_CTRL_UL_MU_DATA_DIS_RX) 311 cmd.ul_mu_data_disable = 1; 312 } 313 314 /* TODO how to set ndp_fdbk_buff_th_exp? */ 315 316 if (iwl_mvm_set_fw_mu_edca_params(mvm, mvmvif->link[link_id], 317 &cmd.trig_based_txf[0])) { 318 flags |= LINK_FLG_MU_EDCA_CW; 319 flags_mask |= LINK_FLG_MU_EDCA_CW; 320 } 321 322 if (changes & LINK_CONTEXT_MODIFY_EHT_PARAMS) { 323 struct ieee80211_chanctx_conf *ctx; 324 struct cfg80211_chan_def *def = NULL; 325 326 rcu_read_lock(); 327 ctx = rcu_dereference(link_conf->chanctx_conf); 328 if (ctx) 329 def = iwl_mvm_chanctx_def(mvm, ctx); 330 331 if (iwlwifi_mod_params.disable_11be || 332 !link_conf->eht_support || !def || 333 iwl_fw_lookup_cmd_ver(mvm->fw, PHY_CONTEXT_CMD, 1) >= 6) 334 changes &= ~LINK_CONTEXT_MODIFY_EHT_PARAMS; 335 else 336 cmd.puncture_mask = cpu_to_le16(def->punctured); 337 rcu_read_unlock(); 338 } 339 340 cmd.bss_color = link_conf->he_bss_color.color; 341 342 if (!link_conf->he_bss_color.enabled) { 343 flags |= LINK_FLG_BSS_COLOR_DIS; 344 flags_mask |= LINK_FLG_BSS_COLOR_DIS; 345 } 346 347 cmd.frame_time_rts_th = cpu_to_le16(link_conf->frame_time_rts_th); 348 349 /* Block 26-tone RU OFDMA transmissions */ 350 if (link_info->he_ru_2mhz_block) { 351 flags |= LINK_FLG_RU_2MHZ_BLOCK; 352 flags_mask |= LINK_FLG_RU_2MHZ_BLOCK; 353 } 354 355 if (link_conf->nontransmitted) { 356 ether_addr_copy(cmd.ref_bssid_addr, 357 link_conf->transmitter_bssid); 358 cmd.bssid_index = link_conf->bssid_index; 359 } 360 361 send_cmd: 362 cmd.modify_mask = cpu_to_le32(changes); 363 cmd.flags = cpu_to_le32(flags); 364 if (cmd_ver < 6) 365 cmd.flags_mask = cpu_to_le32(flags_mask); 366 cmd.spec_link_id = link_conf->link_id; 367 if (cmd_ver < 2) 368 cmd.listen_lmac = cpu_to_le32(link_info->listen_lmac); 369 370 ret = iwl_mvm_link_cmd_send(mvm, &cmd, FW_CTXT_ACTION_MODIFY); 371 if (!ret && (changes & LINK_CONTEXT_MODIFY_ACTIVE)) 372 link_info->active = active; 373 374 return ret; 375 } 376 377 int iwl_mvm_unset_link_mapping(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 378 struct ieee80211_bss_conf *link_conf) 379 { 380 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 381 struct iwl_mvm_vif_link_info *link_info = 382 mvmvif->link[link_conf->link_id]; 383 384 /* mac80211 thought we have the link, but it was never configured */ 385 if (WARN_ON(!link_info || 386 link_info->fw_link_id >= 387 ARRAY_SIZE(mvm->link_id_to_link_conf))) 388 return -EINVAL; 389 390 RCU_INIT_POINTER(mvm->link_id_to_link_conf[link_info->fw_link_id], 391 NULL); 392 return 0; 393 } 394 395 int iwl_mvm_remove_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 396 struct ieee80211_bss_conf *link_conf) 397 { 398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 399 unsigned int link_id = link_conf->link_id; 400 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 401 struct iwl_link_config_cmd cmd = {}; 402 int ret; 403 404 ret = iwl_mvm_unset_link_mapping(mvm, vif, link_conf); 405 if (ret) 406 return 0; 407 408 cmd.link_id = cpu_to_le32(link_info->fw_link_id); 409 link_info->fw_link_id = IWL_MVM_FW_LINK_ID_INVALID; 410 cmd.spec_link_id = link_conf->link_id; 411 cmd.phy_id = cpu_to_le32(FW_CTXT_INVALID); 412 413 ret = iwl_mvm_link_cmd_send(mvm, &cmd, FW_CTXT_ACTION_REMOVE); 414 415 if (!ret && iwl_mvm_sf_update(mvm, vif, true)) 416 IWL_ERR(mvm, "Failed to update SF state\n"); 417 418 return ret; 419 } 420 421 /* link should be deactivated before removal, so in most cases we need to 422 * perform these two operations together 423 */ 424 int iwl_mvm_disable_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 425 struct ieee80211_bss_conf *link_conf) 426 { 427 int ret; 428 429 ret = iwl_mvm_link_changed(mvm, vif, link_conf, 430 LINK_CONTEXT_MODIFY_ACTIVE, false); 431 if (ret) 432 return ret; 433 434 ret = iwl_mvm_remove_link(mvm, vif, link_conf); 435 if (ret) 436 return ret; 437 438 return ret; 439 } 440 441 struct iwl_mvm_rssi_to_grade { 442 s8 rssi[2]; 443 u16 grade; 444 }; 445 446 #define RSSI_TO_GRADE_LINE(_lb, _hb_uhb, _grade) \ 447 { \ 448 .rssi = {_lb, _hb_uhb}, \ 449 .grade = _grade \ 450 } 451 452 /* 453 * This array must be sorted by increasing RSSI for proper functionality. 454 * The grades are actually estimated throughput, represented as fixed-point 455 * with a scale factor of 1/10. 456 */ 457 static const struct iwl_mvm_rssi_to_grade rssi_to_grade_map[] = { 458 RSSI_TO_GRADE_LINE(-85, -89, 177), 459 RSSI_TO_GRADE_LINE(-83, -86, 344), 460 RSSI_TO_GRADE_LINE(-82, -85, 516), 461 RSSI_TO_GRADE_LINE(-80, -83, 688), 462 RSSI_TO_GRADE_LINE(-77, -79, 1032), 463 RSSI_TO_GRADE_LINE(-73, -76, 1376), 464 RSSI_TO_GRADE_LINE(-70, -74, 1548), 465 RSSI_TO_GRADE_LINE(-69, -72, 1750), 466 RSSI_TO_GRADE_LINE(-65, -68, 2064), 467 RSSI_TO_GRADE_LINE(-61, -66, 2294), 468 RSSI_TO_GRADE_LINE(-58, -61, 2580), 469 RSSI_TO_GRADE_LINE(-55, -58, 2868), 470 RSSI_TO_GRADE_LINE(-46, -55, 3098), 471 RSSI_TO_GRADE_LINE(-43, -54, 3442) 472 }; 473 474 #define MAX_GRADE (rssi_to_grade_map[ARRAY_SIZE(rssi_to_grade_map) - 1].grade) 475 476 #define DEFAULT_CHAN_LOAD_LB 30 477 #define DEFAULT_CHAN_LOAD_HB 15 478 #define DEFAULT_CHAN_LOAD_UHB 0 479 480 /* Factors calculation is done with fixed-point with a scaling factor of 1/256 */ 481 #define SCALE_FACTOR 256 482 483 /* Convert a percentage from [0,100] to [0,255] */ 484 #define NORMALIZE_PERCENT_TO_255(percentage) ((percentage) * SCALE_FACTOR / 100) 485 486 static unsigned int 487 iwl_mvm_get_puncturing_factor(const struct ieee80211_bss_conf *link_conf) 488 { 489 enum nl80211_chan_width chan_width = 490 link_conf->chanreq.oper.width; 491 int mhz = nl80211_chan_width_to_mhz(chan_width); 492 unsigned int n_subchannels, n_punctured, puncturing_penalty; 493 494 if (WARN_ONCE(mhz < 20 || mhz > 320, 495 "Invalid channel width : (%d)\n", mhz)) 496 return SCALE_FACTOR; 497 498 /* No puncturing, no penalty */ 499 if (mhz < 80) 500 return SCALE_FACTOR; 501 502 /* total number of subchannels */ 503 n_subchannels = mhz / 20; 504 /* how many of these are punctured */ 505 n_punctured = hweight16(link_conf->chanreq.oper.punctured); 506 507 puncturing_penalty = n_punctured * SCALE_FACTOR / n_subchannels; 508 return SCALE_FACTOR - puncturing_penalty; 509 } 510 511 static unsigned int 512 iwl_mvm_get_chan_load(struct ieee80211_bss_conf *link_conf) 513 { 514 struct ieee80211_vif *vif = link_conf->vif; 515 struct iwl_mvm_vif_link_info *mvm_link = 516 iwl_mvm_vif_from_mac80211(link_conf->vif)->link[link_conf->link_id]; 517 const struct element *bss_load_elem; 518 const struct ieee80211_bss_load_elem *bss_load; 519 enum nl80211_band band = link_conf->chanreq.oper.chan->band; 520 const struct cfg80211_bss_ies *ies; 521 unsigned int chan_load; 522 u32 chan_load_by_us; 523 524 rcu_read_lock(); 525 if (ieee80211_vif_link_active(vif, link_conf->link_id)) 526 ies = rcu_dereference(link_conf->bss->beacon_ies); 527 else 528 ies = rcu_dereference(link_conf->bss->ies); 529 530 if (ies) 531 bss_load_elem = cfg80211_find_elem(WLAN_EID_QBSS_LOAD, 532 ies->data, ies->len); 533 else 534 bss_load_elem = NULL; 535 536 /* If there isn't BSS Load element, take the defaults */ 537 if (!bss_load_elem || 538 bss_load_elem->datalen != sizeof(*bss_load)) { 539 rcu_read_unlock(); 540 switch (band) { 541 case NL80211_BAND_2GHZ: 542 chan_load = DEFAULT_CHAN_LOAD_LB; 543 break; 544 case NL80211_BAND_5GHZ: 545 chan_load = DEFAULT_CHAN_LOAD_HB; 546 break; 547 case NL80211_BAND_6GHZ: 548 chan_load = DEFAULT_CHAN_LOAD_UHB; 549 break; 550 default: 551 chan_load = 0; 552 break; 553 } 554 /* The defaults are given in percentage */ 555 return NORMALIZE_PERCENT_TO_255(chan_load); 556 } 557 558 bss_load = (const void *)bss_load_elem->data; 559 /* Channel util is in range 0-255 */ 560 chan_load = bss_load->channel_util; 561 rcu_read_unlock(); 562 563 if (!mvm_link || !mvm_link->active) 564 return chan_load; 565 566 if (WARN_ONCE(!mvm_link->phy_ctxt, 567 "Active link (%u) without phy ctxt assigned!\n", 568 link_conf->link_id)) 569 return chan_load; 570 571 /* channel load by us is given in percentage */ 572 chan_load_by_us = 573 NORMALIZE_PERCENT_TO_255(mvm_link->phy_ctxt->channel_load_by_us); 574 575 /* Use only values that firmware sends that can possibly be valid */ 576 if (chan_load_by_us <= chan_load) 577 chan_load -= chan_load_by_us; 578 579 return chan_load; 580 } 581 582 static unsigned int 583 iwl_mvm_get_chan_load_factor(struct ieee80211_bss_conf *link_conf) 584 { 585 return SCALE_FACTOR - iwl_mvm_get_chan_load(link_conf); 586 } 587 588 /* This function calculates the grade of a link. Returns 0 in error case */ 589 VISIBLE_IF_IWLWIFI_KUNIT 590 unsigned int iwl_mvm_get_link_grade(struct ieee80211_bss_conf *link_conf) 591 { 592 enum nl80211_band band; 593 int i, rssi_idx; 594 s32 link_rssi; 595 unsigned int grade = MAX_GRADE; 596 597 if (WARN_ON_ONCE(!link_conf)) 598 return 0; 599 600 band = link_conf->chanreq.oper.chan->band; 601 if (WARN_ONCE(band != NL80211_BAND_2GHZ && 602 band != NL80211_BAND_5GHZ && 603 band != NL80211_BAND_6GHZ, 604 "Invalid band (%u)\n", band)) 605 return 0; 606 607 link_rssi = MBM_TO_DBM(link_conf->bss->signal); 608 /* 609 * For 6 GHz the RSSI of the beacons is lower than 610 * the RSSI of the data. 611 */ 612 if (band == NL80211_BAND_6GHZ) 613 link_rssi += 4; 614 615 rssi_idx = band == NL80211_BAND_2GHZ ? 0 : 1; 616 617 /* No valid RSSI - take the lowest grade */ 618 if (!link_rssi) 619 link_rssi = rssi_to_grade_map[0].rssi[rssi_idx]; 620 621 /* Get grade based on RSSI */ 622 for (i = 0; i < ARRAY_SIZE(rssi_to_grade_map); i++) { 623 const struct iwl_mvm_rssi_to_grade *line = 624 &rssi_to_grade_map[i]; 625 626 if (link_rssi > line->rssi[rssi_idx]) 627 continue; 628 grade = line->grade; 629 break; 630 } 631 632 /* apply the channel load and puncturing factors */ 633 grade = grade * iwl_mvm_get_chan_load_factor(link_conf) / SCALE_FACTOR; 634 grade = grade * iwl_mvm_get_puncturing_factor(link_conf) / SCALE_FACTOR; 635 return grade; 636 } 637 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_get_link_grade); 638 639 static 640 u8 iwl_mvm_set_link_selection_data(struct ieee80211_vif *vif, 641 struct iwl_mvm_link_sel_data *data, 642 unsigned long usable_links, 643 u8 *best_link_idx) 644 { 645 u8 n_data = 0; 646 u16 max_grade = 0; 647 unsigned long link_id; 648 649 /* TODO: don't select links that weren't discovered in the last scan */ 650 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 651 struct ieee80211_bss_conf *link_conf = 652 link_conf_dereference_protected(vif, link_id); 653 654 if (WARN_ON_ONCE(!link_conf)) 655 continue; 656 657 data[n_data].link_id = link_id; 658 data[n_data].chandef = &link_conf->chanreq.oper; 659 data[n_data].signal = link_conf->bss->signal / 100; 660 data[n_data].grade = iwl_mvm_get_link_grade(link_conf); 661 662 if (data[n_data].grade > max_grade) { 663 max_grade = data[n_data].grade; 664 *best_link_idx = n_data; 665 } 666 n_data++; 667 } 668 669 return n_data; 670 } 671 672 struct iwl_mvm_bw_to_rssi_threshs { 673 s8 low; 674 s8 high; 675 }; 676 677 #define BW_TO_RSSI_THRESHOLDS(_bw) \ 678 [IWL_PHY_CHANNEL_MODE ## _bw] = { \ 679 .low = IWL_MVM_LOW_RSSI_THRESH_##_bw##MHZ, \ 680 .high = IWL_MVM_HIGH_RSSI_THRESH_##_bw##MHZ \ 681 } 682 683 s8 iwl_mvm_get_esr_rssi_thresh(struct iwl_mvm *mvm, 684 const struct cfg80211_chan_def *chandef, 685 bool low) 686 { 687 const struct iwl_mvm_bw_to_rssi_threshs bw_to_rssi_threshs_map[] = { 688 BW_TO_RSSI_THRESHOLDS(20), 689 BW_TO_RSSI_THRESHOLDS(40), 690 BW_TO_RSSI_THRESHOLDS(80), 691 BW_TO_RSSI_THRESHOLDS(160) 692 /* 320 MHz has the same thresholds as 20 MHz */ 693 }; 694 const struct iwl_mvm_bw_to_rssi_threshs *threshs; 695 u8 chan_width = iwl_mvm_get_channel_width(chandef); 696 697 if (WARN_ON(chandef->chan->band != NL80211_BAND_2GHZ && 698 chandef->chan->band != NL80211_BAND_5GHZ && 699 chandef->chan->band != NL80211_BAND_6GHZ)) 700 return S8_MAX; 701 702 /* 6 GHz will always use 20 MHz thresholds, regardless of the BW */ 703 if (chan_width == IWL_PHY_CHANNEL_MODE320) 704 chan_width = IWL_PHY_CHANNEL_MODE20; 705 706 threshs = &bw_to_rssi_threshs_map[chan_width]; 707 708 return low ? threshs->low : threshs->high; 709 } 710 711 static u32 712 iwl_mvm_esr_disallowed_with_link(struct iwl_mvm *mvm, 713 struct ieee80211_vif *vif, 714 const struct iwl_mvm_link_sel_data *link, 715 bool primary) 716 { 717 struct wiphy *wiphy = mvm->hw->wiphy; 718 struct ieee80211_bss_conf *conf; 719 enum iwl_mvm_esr_state ret = 0; 720 s8 thresh; 721 722 conf = wiphy_dereference(wiphy, vif->link_conf[link->link_id]); 723 if (WARN_ON_ONCE(!conf)) 724 return false; 725 726 /* BT Coex effects eSR mode only if one of the links is on LB */ 727 if (link->chandef->chan->band == NL80211_BAND_2GHZ && 728 (!iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, link->signal, 729 primary))) 730 ret |= IWL_MVM_ESR_EXIT_COEX; 731 732 thresh = iwl_mvm_get_esr_rssi_thresh(mvm, link->chandef, 733 false); 734 735 if (link->signal < thresh) 736 ret |= IWL_MVM_ESR_EXIT_LOW_RSSI; 737 738 if (conf->csa_active) 739 ret |= IWL_MVM_ESR_EXIT_CSA; 740 741 if (ret) { 742 IWL_DEBUG_INFO(mvm, 743 "Link %d is not allowed for esr\n", 744 link->link_id); 745 iwl_mvm_print_esr_state(mvm, ret); 746 } 747 return ret; 748 } 749 750 VISIBLE_IF_IWLWIFI_KUNIT 751 bool iwl_mvm_mld_valid_link_pair(struct ieee80211_vif *vif, 752 const struct iwl_mvm_link_sel_data *a, 753 const struct iwl_mvm_link_sel_data *b) 754 { 755 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 756 struct iwl_mvm *mvm = mvmvif->mvm; 757 enum iwl_mvm_esr_state ret = 0; 758 759 /* Per-link considerations */ 760 if (iwl_mvm_esr_disallowed_with_link(mvm, vif, a, true) || 761 iwl_mvm_esr_disallowed_with_link(mvm, vif, b, false)) 762 return false; 763 764 if (a->chandef->chan->band == b->chandef->chan->band || 765 a->chandef->width != b->chandef->width) 766 ret |= IWL_MVM_ESR_EXIT_BANDWIDTH; 767 768 if (ret) { 769 IWL_DEBUG_INFO(mvm, 770 "Links %d and %d are not a valid pair for EMLSR\n", 771 a->link_id, b->link_id); 772 iwl_mvm_print_esr_state(mvm, ret); 773 return false; 774 } 775 776 return true; 777 778 } 779 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_mld_valid_link_pair); 780 781 /* 782 * Returns the combined eSR grade of two given links. 783 * Returns 0 if eSR is not allowed with these 2 links. 784 */ 785 static 786 unsigned int iwl_mvm_get_esr_grade(struct ieee80211_vif *vif, 787 const struct iwl_mvm_link_sel_data *a, 788 const struct iwl_mvm_link_sel_data *b, 789 u8 *primary_id) 790 { 791 struct ieee80211_bss_conf *primary_conf; 792 struct wiphy *wiphy = ieee80211_vif_to_wdev(vif)->wiphy; 793 unsigned int primary_load; 794 795 lockdep_assert_wiphy(wiphy); 796 797 /* a is always primary, b is always secondary */ 798 if (b->grade > a->grade) 799 swap(a, b); 800 801 *primary_id = a->link_id; 802 803 if (!iwl_mvm_mld_valid_link_pair(vif, a, b)) 804 return 0; 805 806 primary_conf = wiphy_dereference(wiphy, vif->link_conf[*primary_id]); 807 808 if (WARN_ON_ONCE(!primary_conf)) 809 return 0; 810 811 primary_load = iwl_mvm_get_chan_load(primary_conf); 812 813 return a->grade + 814 ((b->grade * primary_load) / SCALE_FACTOR); 815 } 816 817 void iwl_mvm_select_links(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 818 { 819 struct iwl_mvm_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS]; 820 struct iwl_mvm_link_sel_data *best_link; 821 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 822 u32 max_active_links = iwl_mvm_max_active_links(mvm, vif); 823 u16 usable_links = ieee80211_vif_usable_links(vif); 824 u8 best, primary_link, best_in_pair, n_data; 825 u16 max_esr_grade = 0, new_active_links; 826 827 lockdep_assert_wiphy(mvm->hw->wiphy); 828 829 if (!mvmvif->authorized || !ieee80211_vif_is_mld(vif)) 830 return; 831 832 if (!IWL_MVM_AUTO_EML_ENABLE) 833 return; 834 835 /* The logic below is a simple version that doesn't suit more than 2 836 * links 837 */ 838 WARN_ON_ONCE(max_active_links > 2); 839 840 n_data = iwl_mvm_set_link_selection_data(vif, data, usable_links, 841 &best); 842 843 if (WARN(!n_data, "Couldn't find a valid grade for any link!\n")) 844 return; 845 846 best_link = &data[best]; 847 primary_link = best_link->link_id; 848 new_active_links = BIT(best_link->link_id); 849 850 /* eSR is not supported/blocked, or only one usable link */ 851 if (max_active_links == 1 || !iwl_mvm_vif_has_esr_cap(mvm, vif) || 852 mvmvif->esr_disable_reason || n_data == 1) 853 goto set_active; 854 855 for (u8 a = 0; a < n_data; a++) 856 for (u8 b = a + 1; b < n_data; b++) { 857 u16 esr_grade = iwl_mvm_get_esr_grade(vif, &data[a], 858 &data[b], 859 &best_in_pair); 860 861 if (esr_grade <= max_esr_grade) 862 continue; 863 864 max_esr_grade = esr_grade; 865 primary_link = best_in_pair; 866 new_active_links = BIT(data[a].link_id) | 867 BIT(data[b].link_id); 868 } 869 870 /* No valid pair was found, go with the best link */ 871 if (hweight16(new_active_links) <= 1) 872 goto set_active; 873 874 /* For equal grade - prefer EMLSR */ 875 if (best_link->grade > max_esr_grade) { 876 primary_link = best_link->link_id; 877 new_active_links = BIT(best_link->link_id); 878 } 879 set_active: 880 IWL_DEBUG_INFO(mvm, "Link selection result: 0x%x. Primary = %d\n", 881 new_active_links, primary_link); 882 ieee80211_set_active_links_async(vif, new_active_links); 883 mvmvif->link_selection_res = new_active_links; 884 mvmvif->link_selection_primary = primary_link; 885 } 886 887 u8 iwl_mvm_get_primary_link(struct ieee80211_vif *vif) 888 { 889 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 890 891 /* relevant data is written with both locks held, so read with either */ 892 lockdep_assert(lockdep_is_held(&mvmvif->mvm->mutex) || 893 lockdep_is_held(&mvmvif->mvm->hw->wiphy->mtx)); 894 895 if (!ieee80211_vif_is_mld(vif)) 896 return 0; 897 898 /* In AP mode, there is no primary link */ 899 if (vif->type == NL80211_IFTYPE_AP) 900 return __ffs(vif->active_links); 901 902 if (mvmvif->esr_active && 903 !WARN_ON(!(BIT(mvmvif->primary_link) & vif->active_links))) 904 return mvmvif->primary_link; 905 906 return __ffs(vif->active_links); 907 } 908 909 /* 910 * For non-MLO/single link, this will return the deflink/single active link, 911 * respectively 912 */ 913 u8 iwl_mvm_get_other_link(struct ieee80211_vif *vif, u8 link_id) 914 { 915 switch (hweight16(vif->active_links)) { 916 case 0: 917 return 0; 918 default: 919 WARN_ON(1); 920 fallthrough; 921 case 1: 922 return __ffs(vif->active_links); 923 case 2: 924 return __ffs(vif->active_links & ~BIT(link_id)); 925 } 926 } 927 928 /* Reasons that can cause esr prevention */ 929 #define IWL_MVM_ESR_PREVENT_REASONS IWL_MVM_ESR_EXIT_MISSED_BEACON 930 #define IWL_MVM_PREVENT_ESR_TIMEOUT (HZ * 400) 931 #define IWL_MVM_ESR_PREVENT_SHORT (HZ * 300) 932 #define IWL_MVM_ESR_PREVENT_LONG (HZ * 600) 933 934 static bool iwl_mvm_check_esr_prevention(struct iwl_mvm *mvm, 935 struct iwl_mvm_vif *mvmvif, 936 enum iwl_mvm_esr_state reason) 937 { 938 bool timeout_expired = time_after(jiffies, 939 mvmvif->last_esr_exit.ts + 940 IWL_MVM_PREVENT_ESR_TIMEOUT); 941 unsigned long delay; 942 943 lockdep_assert_held(&mvm->mutex); 944 945 /* Only handle reasons that can cause prevention */ 946 if (!(reason & IWL_MVM_ESR_PREVENT_REASONS)) 947 return false; 948 949 /* 950 * Reset the counter if more than 400 seconds have passed between one 951 * exit and the other, or if we exited due to a different reason. 952 * Will also reset the counter after the long prevention is done. 953 */ 954 if (timeout_expired || mvmvif->last_esr_exit.reason != reason) { 955 mvmvif->exit_same_reason_count = 1; 956 return false; 957 } 958 959 mvmvif->exit_same_reason_count++; 960 if (WARN_ON(mvmvif->exit_same_reason_count < 2 || 961 mvmvif->exit_same_reason_count > 3)) 962 return false; 963 964 mvmvif->esr_disable_reason |= IWL_MVM_ESR_BLOCKED_PREVENTION; 965 966 /* 967 * For the second exit, use a short prevention, and for the third one, 968 * use a long prevention. 969 */ 970 delay = mvmvif->exit_same_reason_count == 2 ? 971 IWL_MVM_ESR_PREVENT_SHORT : 972 IWL_MVM_ESR_PREVENT_LONG; 973 974 IWL_DEBUG_INFO(mvm, 975 "Preventing EMLSR for %ld seconds due to %u exits with the reason = %s (0x%x)\n", 976 delay / HZ, mvmvif->exit_same_reason_count, 977 iwl_get_esr_state_string(reason), reason); 978 979 wiphy_delayed_work_queue(mvm->hw->wiphy, 980 &mvmvif->prevent_esr_done_wk, delay); 981 return true; 982 } 983 984 #define IWL_MVM_TRIGGER_LINK_SEL_TIME (IWL_MVM_TRIGGER_LINK_SEL_TIME_SEC * HZ) 985 986 /* API to exit eSR mode */ 987 void iwl_mvm_exit_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 988 enum iwl_mvm_esr_state reason, 989 u8 link_to_keep) 990 { 991 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 992 u16 new_active_links; 993 bool prevented; 994 995 lockdep_assert_held(&mvm->mutex); 996 997 if (!IWL_MVM_AUTO_EML_ENABLE) 998 return; 999 1000 /* Nothing to do */ 1001 if (!mvmvif->esr_active) 1002 return; 1003 1004 if (WARN_ON(!ieee80211_vif_is_mld(vif) || !mvmvif->authorized)) 1005 return; 1006 1007 if (WARN_ON(!(vif->active_links & BIT(link_to_keep)))) 1008 link_to_keep = __ffs(vif->active_links); 1009 1010 new_active_links = BIT(link_to_keep); 1011 IWL_DEBUG_INFO(mvm, 1012 "Exiting EMLSR. reason = %s (0x%x). Current active links=0x%x, new active links = 0x%x\n", 1013 iwl_get_esr_state_string(reason), reason, 1014 vif->active_links, new_active_links); 1015 1016 ieee80211_set_active_links_async(vif, new_active_links); 1017 1018 /* Prevent EMLSR if needed */ 1019 prevented = iwl_mvm_check_esr_prevention(mvm, mvmvif, reason); 1020 1021 /* Remember why and when we exited EMLSR */ 1022 mvmvif->last_esr_exit.ts = jiffies; 1023 mvmvif->last_esr_exit.reason = reason; 1024 1025 /* 1026 * If EMLSR is prevented now - don't try to get back to EMLSR. 1027 * If we exited due to a blocking event, we will try to get back to 1028 * EMLSR when the corresponding unblocking event will happen. 1029 */ 1030 if (prevented || reason & IWL_MVM_BLOCK_ESR_REASONS) 1031 return; 1032 1033 /* If EMLSR is not blocked - try enabling it again in 30 seconds */ 1034 wiphy_delayed_work_queue(mvm->hw->wiphy, 1035 &mvmvif->mlo_int_scan_wk, 1036 round_jiffies_relative(IWL_MVM_TRIGGER_LINK_SEL_TIME)); 1037 } 1038 1039 void iwl_mvm_block_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1040 enum iwl_mvm_esr_state reason, 1041 u8 link_to_keep) 1042 { 1043 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1044 1045 lockdep_assert_held(&mvm->mutex); 1046 1047 if (!IWL_MVM_AUTO_EML_ENABLE) 1048 return; 1049 1050 /* This should be called only with disable reasons */ 1051 if (WARN_ON(!(reason & IWL_MVM_BLOCK_ESR_REASONS))) 1052 return; 1053 1054 if (mvmvif->esr_disable_reason & reason) 1055 return; 1056 1057 IWL_DEBUG_INFO(mvm, 1058 "Blocking EMLSR mode. reason = %s (0x%x)\n", 1059 iwl_get_esr_state_string(reason), reason); 1060 1061 mvmvif->esr_disable_reason |= reason; 1062 1063 iwl_mvm_print_esr_state(mvm, mvmvif->esr_disable_reason); 1064 1065 iwl_mvm_exit_esr(mvm, vif, reason, link_to_keep); 1066 } 1067 1068 int iwl_mvm_block_esr_sync(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1069 enum iwl_mvm_esr_state reason) 1070 { 1071 int primary_link = iwl_mvm_get_primary_link(vif); 1072 int ret; 1073 1074 if (!IWL_MVM_AUTO_EML_ENABLE || !ieee80211_vif_is_mld(vif)) 1075 return 0; 1076 1077 /* This should be called only with blocking reasons */ 1078 if (WARN_ON(!(reason & IWL_MVM_BLOCK_ESR_REASONS))) 1079 return 0; 1080 1081 /* leave ESR immediately, not only async with iwl_mvm_block_esr() */ 1082 ret = ieee80211_set_active_links(vif, BIT(primary_link)); 1083 if (ret) 1084 return ret; 1085 1086 mutex_lock(&mvm->mutex); 1087 /* only additionally block for consistency and to avoid concurrency */ 1088 iwl_mvm_block_esr(mvm, vif, reason, primary_link); 1089 mutex_unlock(&mvm->mutex); 1090 1091 return 0; 1092 } 1093 1094 static void iwl_mvm_esr_unblocked(struct iwl_mvm *mvm, 1095 struct ieee80211_vif *vif) 1096 { 1097 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1098 bool need_new_sel = time_after(jiffies, mvmvif->last_esr_exit.ts + 1099 IWL_MVM_TRIGGER_LINK_SEL_TIME); 1100 1101 lockdep_assert_held(&mvm->mutex); 1102 1103 if (!ieee80211_vif_is_mld(vif) || !mvmvif->authorized || 1104 mvmvif->esr_active) 1105 return; 1106 1107 IWL_DEBUG_INFO(mvm, "EMLSR is unblocked\n"); 1108 1109 /* If we exited due to an EXIT reason, and the exit was in less than 1110 * 30 seconds, then a MLO scan was scheduled already. 1111 */ 1112 if (!need_new_sel && 1113 !(mvmvif->last_esr_exit.reason & IWL_MVM_BLOCK_ESR_REASONS)) { 1114 IWL_DEBUG_INFO(mvm, "Wait for MLO scan\n"); 1115 return; 1116 } 1117 1118 /* 1119 * If EMLSR was blocked for more than 30 seconds, or the last link 1120 * selection decided to not enter EMLSR, trigger a new scan. 1121 */ 1122 if (need_new_sel || hweight16(mvmvif->link_selection_res) < 2) { 1123 IWL_DEBUG_INFO(mvm, "Trigger MLO scan\n"); 1124 wiphy_delayed_work_queue(mvm->hw->wiphy, 1125 &mvmvif->mlo_int_scan_wk, 0); 1126 /* 1127 * If EMLSR was blocked for less than 30 seconds, and the last link 1128 * selection decided to use EMLSR, activate EMLSR using the previous 1129 * link selection result. 1130 */ 1131 } else { 1132 IWL_DEBUG_INFO(mvm, 1133 "Use the latest link selection result: 0x%x\n", 1134 mvmvif->link_selection_res); 1135 ieee80211_set_active_links_async(vif, 1136 mvmvif->link_selection_res); 1137 } 1138 } 1139 1140 void iwl_mvm_unblock_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1141 enum iwl_mvm_esr_state reason) 1142 { 1143 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1144 1145 lockdep_assert_held(&mvm->mutex); 1146 1147 if (!IWL_MVM_AUTO_EML_ENABLE) 1148 return; 1149 1150 /* This should be called only with disable reasons */ 1151 if (WARN_ON(!(reason & IWL_MVM_BLOCK_ESR_REASONS))) 1152 return; 1153 1154 /* No Change */ 1155 if (!(mvmvif->esr_disable_reason & reason)) 1156 return; 1157 1158 mvmvif->esr_disable_reason &= ~reason; 1159 1160 IWL_DEBUG_INFO(mvm, 1161 "Unblocking EMLSR mode. reason = %s (0x%x)\n", 1162 iwl_get_esr_state_string(reason), reason); 1163 iwl_mvm_print_esr_state(mvm, mvmvif->esr_disable_reason); 1164 1165 if (!mvmvif->esr_disable_reason) 1166 iwl_mvm_esr_unblocked(mvm, vif); 1167 } 1168 1169 void iwl_mvm_init_link(struct iwl_mvm_vif_link_info *link) 1170 { 1171 link->bcast_sta.sta_id = IWL_INVALID_STA; 1172 link->mcast_sta.sta_id = IWL_INVALID_STA; 1173 link->ap_sta_id = IWL_INVALID_STA; 1174 1175 for (int r = 0; r < NUM_IWL_MVM_SMPS_REQ; r++) 1176 link->smps_requests[r] = 1177 IEEE80211_SMPS_AUTOMATIC; 1178 } 1179