1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 #include "mlo.h" 6 #include "phy.h" 7 8 /* Block reasons helper */ 9 #define HANDLE_EMLSR_BLOCKED_REASONS(HOW) \ 10 HOW(PREVENTION) \ 11 HOW(WOWLAN) \ 12 HOW(ROC) \ 13 HOW(NON_BSS) \ 14 HOW(TMP_NON_BSS) \ 15 HOW(TPT) 16 17 static const char * 18 iwl_mld_get_emlsr_blocked_string(enum iwl_mld_emlsr_blocked blocked) 19 { 20 /* Using switch without "default" will warn about missing entries */ 21 switch (blocked) { 22 #define REASON_CASE(x) case IWL_MLD_EMLSR_BLOCKED_##x: return #x; 23 HANDLE_EMLSR_BLOCKED_REASONS(REASON_CASE) 24 #undef REASON_CASE 25 } 26 27 return "ERROR"; 28 } 29 30 static void iwl_mld_print_emlsr_blocked(struct iwl_mld *mld, u32 mask) 31 { 32 #define NAME_FMT(x) "%s" 33 #define NAME_PR(x) (mask & IWL_MLD_EMLSR_BLOCKED_##x) ? "[" #x "]" : "", 34 IWL_DEBUG_INFO(mld, 35 "EMLSR blocked = " HANDLE_EMLSR_BLOCKED_REASONS(NAME_FMT) 36 " (0x%x)\n", 37 HANDLE_EMLSR_BLOCKED_REASONS(NAME_PR) 38 mask); 39 #undef NAME_FMT 40 #undef NAME_PR 41 } 42 43 /* Exit reasons helper */ 44 #define HANDLE_EMLSR_EXIT_REASONS(HOW) \ 45 HOW(BLOCK) \ 46 HOW(MISSED_BEACON) \ 47 HOW(FAIL_ENTRY) \ 48 HOW(CSA) \ 49 HOW(EQUAL_BAND) \ 50 HOW(LOW_RSSI) \ 51 HOW(LINK_USAGE) \ 52 HOW(BT_COEX) \ 53 HOW(CHAN_LOAD) \ 54 HOW(RFI) \ 55 HOW(FW_REQUEST) \ 56 HOW(INVALID) 57 58 static const char * 59 iwl_mld_get_emlsr_exit_string(enum iwl_mld_emlsr_exit exit) 60 { 61 /* Using switch without "default" will warn about missing entries */ 62 switch (exit) { 63 #define REASON_CASE(x) case IWL_MLD_EMLSR_EXIT_##x: return #x; 64 HANDLE_EMLSR_EXIT_REASONS(REASON_CASE) 65 #undef REASON_CASE 66 } 67 68 return "ERROR"; 69 } 70 71 static void iwl_mld_print_emlsr_exit(struct iwl_mld *mld, u32 mask) 72 { 73 #define NAME_FMT(x) "%s" 74 #define NAME_PR(x) (mask & IWL_MLD_EMLSR_EXIT_##x) ? "[" #x "]" : "", 75 IWL_DEBUG_INFO(mld, 76 "EMLSR exit = " HANDLE_EMLSR_EXIT_REASONS(NAME_FMT) 77 " (0x%x)\n", 78 HANDLE_EMLSR_EXIT_REASONS(NAME_PR) 79 mask); 80 #undef NAME_FMT 81 #undef NAME_PR 82 } 83 84 void iwl_mld_emlsr_prevent_done_wk(struct wiphy *wiphy, struct wiphy_work *wk) 85 { 86 struct iwl_mld_vif *mld_vif = container_of(wk, struct iwl_mld_vif, 87 emlsr.prevent_done_wk.work); 88 struct ieee80211_vif *vif = 89 container_of((void *)mld_vif, struct ieee80211_vif, drv_priv); 90 91 if (WARN_ON(!(mld_vif->emlsr.blocked_reasons & 92 IWL_MLD_EMLSR_BLOCKED_PREVENTION))) 93 return; 94 95 iwl_mld_unblock_emlsr(mld_vif->mld, vif, 96 IWL_MLD_EMLSR_BLOCKED_PREVENTION); 97 } 98 99 void iwl_mld_emlsr_tmp_non_bss_done_wk(struct wiphy *wiphy, 100 struct wiphy_work *wk) 101 { 102 struct iwl_mld_vif *mld_vif = container_of(wk, struct iwl_mld_vif, 103 emlsr.tmp_non_bss_done_wk.work); 104 struct ieee80211_vif *vif = 105 container_of((void *)mld_vif, struct ieee80211_vif, drv_priv); 106 107 if (WARN_ON(!(mld_vif->emlsr.blocked_reasons & 108 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS))) 109 return; 110 111 iwl_mld_unblock_emlsr(mld_vif->mld, vif, 112 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS); 113 } 114 115 #define IWL_MLD_TRIGGER_LINK_SEL_TIME (HZ * IWL_MLD_TRIGGER_LINK_SEL_TIME_SEC) 116 #define IWL_MLD_SCAN_EXPIRE_TIME (HZ * IWL_MLD_SCAN_EXPIRE_TIME_SEC) 117 118 /* Exit reasons that can cause longer EMLSR prevention */ 119 #define IWL_MLD_PREVENT_EMLSR_REASONS (IWL_MLD_EMLSR_EXIT_MISSED_BEACON | \ 120 IWL_MLD_EMLSR_EXIT_LINK_USAGE | \ 121 IWL_MLD_EMLSR_EXIT_FW_REQUEST) 122 #define IWL_MLD_PREVENT_EMLSR_TIMEOUT (HZ * 400) 123 124 #define IWL_MLD_EMLSR_PREVENT_SHORT (HZ * 300) 125 #define IWL_MLD_EMLSR_PREVENT_LONG (HZ * 600) 126 127 static void iwl_mld_check_emlsr_prevention(struct iwl_mld *mld, 128 struct iwl_mld_vif *mld_vif, 129 enum iwl_mld_emlsr_exit reason) 130 { 131 unsigned long delay; 132 133 /* 134 * Reset the counter if more than 400 seconds have passed between one 135 * exit and the other, or if we exited due to a different reason. 136 * Will also reset the counter after the long prevention is done. 137 */ 138 if (time_after(jiffies, mld_vif->emlsr.last_exit_ts + 139 IWL_MLD_PREVENT_EMLSR_TIMEOUT) || 140 mld_vif->emlsr.last_exit_reason != reason) 141 mld_vif->emlsr.exit_repeat_count = 0; 142 143 mld_vif->emlsr.last_exit_reason = reason; 144 mld_vif->emlsr.last_exit_ts = jiffies; 145 mld_vif->emlsr.exit_repeat_count++; 146 147 /* 148 * Do not add a prevention when the reason was a block. For a block, 149 * EMLSR will be enabled again on unblock. 150 */ 151 if (reason == IWL_MLD_EMLSR_EXIT_BLOCK) 152 return; 153 154 /* Set prevention for a minimum of 30 seconds */ 155 mld_vif->emlsr.blocked_reasons |= IWL_MLD_EMLSR_BLOCKED_PREVENTION; 156 delay = IWL_MLD_TRIGGER_LINK_SEL_TIME; 157 158 /* Handle repeats for reasons that can cause long prevention */ 159 if (mld_vif->emlsr.exit_repeat_count > 1 && 160 reason & IWL_MLD_PREVENT_EMLSR_REASONS) { 161 if (mld_vif->emlsr.exit_repeat_count == 2) 162 delay = IWL_MLD_EMLSR_PREVENT_SHORT; 163 else 164 delay = IWL_MLD_EMLSR_PREVENT_LONG; 165 166 /* 167 * The timeouts are chosen so that this will not happen, i.e. 168 * IWL_MLD_EMLSR_PREVENT_LONG > IWL_MLD_PREVENT_EMLSR_TIMEOUT 169 */ 170 WARN_ON(mld_vif->emlsr.exit_repeat_count > 3); 171 } 172 173 IWL_DEBUG_INFO(mld, 174 "Preventing EMLSR for %ld seconds due to %u exits with the reason = %s (0x%x)\n", 175 delay / HZ, mld_vif->emlsr.exit_repeat_count, 176 iwl_mld_get_emlsr_exit_string(reason), reason); 177 178 wiphy_delayed_work_queue(mld->wiphy, 179 &mld_vif->emlsr.prevent_done_wk, delay); 180 } 181 182 static void iwl_mld_clear_avg_chan_load_iter(struct ieee80211_hw *hw, 183 struct ieee80211_chanctx_conf *ctx, 184 void *dat) 185 { 186 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 187 188 /* It is ok to do it for all chanctx (and not only for the ones that 189 * belong to the EMLSR vif) since EMLSR is not allowed if there is 190 * another vif. 191 */ 192 phy->avg_channel_load_not_by_us = 0; 193 } 194 195 static int _iwl_mld_exit_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif, 196 enum iwl_mld_emlsr_exit exit, u8 link_to_keep, 197 bool sync) 198 { 199 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 200 u16 new_active_links; 201 int ret = 0; 202 203 lockdep_assert_wiphy(mld->wiphy); 204 205 /* On entry failure need to exit anyway, even if entered from debugfs */ 206 if (exit != IWL_MLD_EMLSR_EXIT_FAIL_ENTRY && !IWL_MLD_AUTO_EML_ENABLE) 207 return 0; 208 209 /* Ignore exit request if EMLSR is not active */ 210 if (!iwl_mld_emlsr_active(vif)) 211 return 0; 212 213 if (WARN_ON(!ieee80211_vif_is_mld(vif) || !mld_vif->authorized)) 214 return 0; 215 216 if (WARN_ON(!(vif->active_links & BIT(link_to_keep)))) 217 link_to_keep = __ffs(vif->active_links); 218 219 new_active_links = BIT(link_to_keep); 220 IWL_DEBUG_INFO(mld, 221 "Exiting EMLSR. reason = %s (0x%x). Current active links=0x%x, new active links = 0x%x\n", 222 iwl_mld_get_emlsr_exit_string(exit), exit, 223 vif->active_links, new_active_links); 224 225 if (sync) 226 ret = ieee80211_set_active_links(vif, new_active_links); 227 else 228 ieee80211_set_active_links_async(vif, new_active_links); 229 230 /* Update latest exit reason and check EMLSR prevention */ 231 iwl_mld_check_emlsr_prevention(mld, mld_vif, exit); 232 233 /* channel_load_not_by_us is invalid when in EMLSR. 234 * Clear it so wrong values won't be used. 235 */ 236 ieee80211_iter_chan_contexts_atomic(mld->hw, 237 iwl_mld_clear_avg_chan_load_iter, 238 NULL); 239 240 return ret; 241 } 242 243 void iwl_mld_exit_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif, 244 enum iwl_mld_emlsr_exit exit, u8 link_to_keep) 245 { 246 _iwl_mld_exit_emlsr(mld, vif, exit, link_to_keep, false); 247 } 248 249 static int _iwl_mld_emlsr_block(struct iwl_mld *mld, struct ieee80211_vif *vif, 250 enum iwl_mld_emlsr_blocked reason, 251 u8 link_to_keep, bool sync) 252 { 253 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 254 255 lockdep_assert_wiphy(mld->wiphy); 256 257 if (!IWL_MLD_AUTO_EML_ENABLE || !iwl_mld_vif_has_emlsr_cap(vif)) 258 return 0; 259 260 if (mld_vif->emlsr.blocked_reasons & reason) 261 return 0; 262 263 mld_vif->emlsr.blocked_reasons |= reason; 264 265 IWL_DEBUG_INFO(mld, 266 "Blocking EMLSR mode. reason = %s (0x%x)\n", 267 iwl_mld_get_emlsr_blocked_string(reason), reason); 268 iwl_mld_print_emlsr_blocked(mld, mld_vif->emlsr.blocked_reasons); 269 270 if (reason == IWL_MLD_EMLSR_BLOCKED_TPT) 271 wiphy_delayed_work_cancel(mld_vif->mld->wiphy, 272 &mld_vif->emlsr.check_tpt_wk); 273 274 return _iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_BLOCK, 275 link_to_keep, sync); 276 } 277 278 void iwl_mld_block_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif, 279 enum iwl_mld_emlsr_blocked reason, u8 link_to_keep) 280 { 281 _iwl_mld_emlsr_block(mld, vif, reason, link_to_keep, false); 282 } 283 284 int iwl_mld_block_emlsr_sync(struct iwl_mld *mld, struct ieee80211_vif *vif, 285 enum iwl_mld_emlsr_blocked reason, u8 link_to_keep) 286 { 287 return _iwl_mld_emlsr_block(mld, vif, reason, link_to_keep, true); 288 } 289 290 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (10 * HZ) 291 292 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 293 struct ieee80211_vif *vif) 294 { 295 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 296 int ret; 297 298 if (!iwl_mld_vif_has_emlsr_cap(vif)) 299 return; 300 301 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 302 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 303 iwl_mld_get_primary_link(vif)); 304 if (ret) 305 return; 306 307 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 308 &mld_vif->emlsr.tmp_non_bss_done_wk, 309 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 310 } 311 312 void iwl_mld_emlsr_block_tmp_non_bss(struct iwl_mld *mld) 313 { 314 ieee80211_iterate_active_interfaces_mtx(mld->hw, 315 IEEE80211_IFACE_ITER_NORMAL, 316 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 317 NULL); 318 } 319 320 static void _iwl_mld_select_links(struct iwl_mld *mld, 321 struct ieee80211_vif *vif); 322 323 void iwl_mld_unblock_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif, 324 enum iwl_mld_emlsr_blocked reason) 325 { 326 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 327 328 lockdep_assert_wiphy(mld->wiphy); 329 330 if (!IWL_MLD_AUTO_EML_ENABLE || !iwl_mld_vif_has_emlsr_cap(vif)) 331 return; 332 333 if (!(mld_vif->emlsr.blocked_reasons & reason)) 334 return; 335 336 mld_vif->emlsr.blocked_reasons &= ~reason; 337 338 IWL_DEBUG_INFO(mld, 339 "Unblocking EMLSR mode. reason = %s (0x%x)\n", 340 iwl_mld_get_emlsr_blocked_string(reason), reason); 341 iwl_mld_print_emlsr_blocked(mld, mld_vif->emlsr.blocked_reasons); 342 343 if (reason == IWL_MLD_EMLSR_BLOCKED_TPT) 344 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 345 &mld_vif->emlsr.check_tpt_wk, 346 round_jiffies_relative(IWL_MLD_TPT_COUNT_WINDOW)); 347 348 if (mld_vif->emlsr.blocked_reasons) 349 return; 350 351 IWL_DEBUG_INFO(mld, "EMLSR is unblocked\n"); 352 iwl_mld_int_mlo_scan(mld, vif); 353 } 354 355 static void 356 iwl_mld_vif_iter_emlsr_mode_notif(void *data, u8 *mac, 357 struct ieee80211_vif *vif) 358 { 359 const struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 360 const struct iwl_esr_mode_notif *notif = (void *)data; 361 enum iwl_mvm_fw_esr_recommendation action = le32_to_cpu(notif->action); 362 363 if (!iwl_mld_vif_has_emlsr_cap(vif)) 364 return; 365 366 switch (action) { 367 case ESR_RECOMMEND_LEAVE: 368 IWL_DEBUG_INFO(mld_vif->mld, 369 "FW recommend leave reason = 0x%x\n", 370 le32_to_cpu(notif->leave_reason_mask)); 371 372 iwl_mld_exit_emlsr(mld_vif->mld, vif, 373 IWL_MLD_EMLSR_EXIT_FW_REQUEST, 374 iwl_mld_get_primary_link(vif)); 375 break; 376 case ESR_FORCE_LEAVE: 377 IWL_DEBUG_INFO(mld_vif->mld, 378 "FW force leave reason = 0x%x\n", 379 le32_to_cpu(notif->leave_reason_mask)); 380 fallthrough; 381 case ESR_RECOMMEND_ENTER: 382 default: 383 IWL_WARN(mld_vif->mld, "Unexpected EMLSR notification: %d\n", 384 action); 385 } 386 } 387 388 void iwl_mld_handle_emlsr_mode_notif(struct iwl_mld *mld, 389 struct iwl_rx_packet *pkt) 390 { 391 ieee80211_iterate_active_interfaces_mtx(mld->hw, 392 IEEE80211_IFACE_ITER_NORMAL, 393 iwl_mld_vif_iter_emlsr_mode_notif, 394 pkt->data); 395 } 396 397 static void 398 iwl_mld_vif_iter_disconnect_emlsr(void *data, u8 *mac, 399 struct ieee80211_vif *vif) 400 { 401 if (!iwl_mld_vif_has_emlsr_cap(vif)) 402 return; 403 404 ieee80211_connection_loss(vif); 405 } 406 407 void iwl_mld_handle_emlsr_trans_fail_notif(struct iwl_mld *mld, 408 struct iwl_rx_packet *pkt) 409 { 410 const struct iwl_esr_trans_fail_notif *notif = (const void *)pkt->data; 411 u32 fw_link_id = le32_to_cpu(notif->link_id); 412 struct ieee80211_bss_conf *bss_conf = 413 iwl_mld_fw_id_to_link_conf(mld, fw_link_id); 414 415 IWL_DEBUG_INFO(mld, "Failed to %s EMLSR on link %d (FW: %d), reason %d\n", 416 le32_to_cpu(notif->activation) ? "enter" : "exit", 417 bss_conf ? bss_conf->link_id : -1, 418 le32_to_cpu(notif->link_id), 419 le32_to_cpu(notif->err_code)); 420 421 if (IWL_FW_CHECK(mld, !bss_conf, 422 "FW reported failure to %sactivate EMLSR on a non-existing link: %d\n", 423 le32_to_cpu(notif->activation) ? "" : "de", 424 fw_link_id)) { 425 ieee80211_iterate_active_interfaces_mtx( 426 mld->hw, IEEE80211_IFACE_ITER_NORMAL, 427 iwl_mld_vif_iter_disconnect_emlsr, NULL); 428 return; 429 } 430 431 /* Disconnect if we failed to deactivate a link */ 432 if (!le32_to_cpu(notif->activation)) { 433 ieee80211_connection_loss(bss_conf->vif); 434 return; 435 } 436 437 /* 438 * We failed to activate the second link, go back to the link specified 439 * by the firmware as that is the one that is still valid now. 440 */ 441 iwl_mld_exit_emlsr(mld, bss_conf->vif, IWL_MLD_EMLSR_EXIT_FAIL_ENTRY, 442 bss_conf->link_id); 443 } 444 445 /* Active non-station link tracking */ 446 static void iwl_mld_count_non_bss_links(void *_data, u8 *mac, 447 struct ieee80211_vif *vif) 448 { 449 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 450 int *count = _data; 451 452 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) 453 return; 454 455 *count += iwl_mld_count_active_links(mld_vif->mld, vif); 456 } 457 458 struct iwl_mld_update_emlsr_block_data { 459 bool block; 460 int result; 461 }; 462 463 static void 464 iwl_mld_vif_iter_update_emlsr_non_bss_block(void *_data, u8 *mac, 465 struct ieee80211_vif *vif) 466 { 467 struct iwl_mld_update_emlsr_block_data *data = _data; 468 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 469 int ret; 470 471 if (data->block) { 472 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 473 IWL_MLD_EMLSR_BLOCKED_NON_BSS, 474 iwl_mld_get_primary_link(vif)); 475 if (ret) 476 data->result = ret; 477 } else { 478 iwl_mld_unblock_emlsr(mld_vif->mld, vif, 479 IWL_MLD_EMLSR_BLOCKED_NON_BSS); 480 } 481 } 482 483 int iwl_mld_emlsr_check_non_bss_block(struct iwl_mld *mld, 484 int pending_link_changes) 485 { 486 /* An active link of a non-station vif blocks EMLSR. Upon activation 487 * block EMLSR on the bss vif. Upon deactivation, check if this link 488 * was the last non-station link active, and if so unblock the bss vif 489 */ 490 struct iwl_mld_update_emlsr_block_data block_data = {}; 491 int count = pending_link_changes; 492 493 /* No need to count if we are activating a non-BSS link */ 494 if (count <= 0) 495 ieee80211_iterate_active_interfaces_mtx(mld->hw, 496 IEEE80211_IFACE_ITER_NORMAL, 497 iwl_mld_count_non_bss_links, 498 &count); 499 500 /* 501 * We could skip updating it if the block change did not change (and 502 * pending_link_changes is non-zero). 503 */ 504 block_data.block = !!count; 505 506 ieee80211_iterate_active_interfaces_mtx(mld->hw, 507 IEEE80211_IFACE_ITER_NORMAL, 508 iwl_mld_vif_iter_update_emlsr_non_bss_block, 509 &block_data); 510 511 return block_data.result; 512 } 513 514 #define EMLSR_SEC_LINK_MIN_PERC 10 515 #define EMLSR_MIN_TX 3000 516 #define EMLSR_MIN_RX 400 517 518 void iwl_mld_emlsr_check_tpt(struct wiphy *wiphy, struct wiphy_work *wk) 519 { 520 struct iwl_mld_vif *mld_vif = container_of(wk, struct iwl_mld_vif, 521 emlsr.check_tpt_wk.work); 522 struct ieee80211_vif *vif = 523 container_of((void *)mld_vif, struct ieee80211_vif, drv_priv); 524 struct iwl_mld *mld = mld_vif->mld; 525 struct iwl_mld_sta *mld_sta; 526 struct iwl_mld_link *sec_link; 527 unsigned long total_tx = 0, total_rx = 0; 528 unsigned long sec_link_tx = 0, sec_link_rx = 0; 529 u8 sec_link_tx_perc, sec_link_rx_perc; 530 s8 sec_link_id; 531 532 if (!iwl_mld_vif_has_emlsr_cap(vif) || !mld_vif->ap_sta) 533 return; 534 535 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 536 537 /* We only count for the AP sta in a MLO connection */ 538 if (!mld_sta->mpdu_counters) 539 return; 540 541 /* This wk should only run when the TPT blocker isn't set. 542 * When the blocker is set, the decision to remove it, as well as 543 * clearing the counters is done in DP (to avoid having a wk every 544 * 5 seconds when idle. When the blocker is unset, we are not idle anyway) 545 */ 546 if (WARN_ON(mld_vif->emlsr.blocked_reasons & IWL_MLD_EMLSR_BLOCKED_TPT)) 547 return; 548 /* 549 * TPT is unblocked, need to check if the TPT criteria is still met. 550 * 551 * If EMLSR is active for at least 5 seconds, then we also 552 * need to check the secondary link requirements. 553 */ 554 if (iwl_mld_emlsr_active(vif) && 555 time_is_before_jiffies(mld_vif->emlsr.last_entry_ts + 556 IWL_MLD_TPT_COUNT_WINDOW)) { 557 sec_link_id = iwl_mld_get_other_link(vif, iwl_mld_get_primary_link(vif)); 558 sec_link = iwl_mld_link_dereference_check(mld_vif, sec_link_id); 559 if (WARN_ON_ONCE(!sec_link)) 560 return; 561 /* We need the FW ID here */ 562 sec_link_id = sec_link->fw_id; 563 } else { 564 sec_link_id = -1; 565 } 566 567 /* Sum up RX and TX MPDUs from the different queues/links */ 568 for (int q = 0; q < mld->trans->info.num_rxqs; q++) { 569 struct iwl_mld_per_q_mpdu_counter *queue_counter = 570 &mld_sta->mpdu_counters[q]; 571 572 spin_lock_bh(&queue_counter->lock); 573 574 /* The link IDs that doesn't exist will contain 0 */ 575 for (int link = 0; 576 link < ARRAY_SIZE(queue_counter->per_link); 577 link++) { 578 total_tx += queue_counter->per_link[link].tx; 579 total_rx += queue_counter->per_link[link].rx; 580 } 581 582 if (sec_link_id != -1) { 583 sec_link_tx += queue_counter->per_link[sec_link_id].tx; 584 sec_link_rx += queue_counter->per_link[sec_link_id].rx; 585 } 586 587 memset(queue_counter->per_link, 0, 588 sizeof(queue_counter->per_link)); 589 590 spin_unlock_bh(&queue_counter->lock); 591 } 592 593 IWL_DEBUG_INFO(mld, "total Tx MPDUs: %ld. total Rx MPDUs: %ld\n", 594 total_tx, total_rx); 595 596 /* If we don't have enough MPDUs - exit EMLSR */ 597 if (total_tx < IWL_MLD_ENTER_EMLSR_TPT_THRESH && 598 total_rx < IWL_MLD_ENTER_EMLSR_TPT_THRESH) { 599 iwl_mld_block_emlsr(mld, vif, IWL_MLD_EMLSR_BLOCKED_TPT, 600 iwl_mld_get_primary_link(vif)); 601 return; 602 } 603 604 /* EMLSR is not active */ 605 if (sec_link_id == -1) 606 return; 607 608 IWL_DEBUG_INFO(mld, "Secondary Link %d: Tx MPDUs: %ld. Rx MPDUs: %ld\n", 609 sec_link_id, sec_link_tx, sec_link_rx); 610 611 /* Calculate the percentage of the secondary link TX/RX */ 612 sec_link_tx_perc = total_tx ? sec_link_tx * 100 / total_tx : 0; 613 sec_link_rx_perc = total_rx ? sec_link_rx * 100 / total_rx : 0; 614 615 /* 616 * The TX/RX percentage is checked only if it exceeds the required 617 * minimum. In addition, RX is checked only if the TX check failed. 618 */ 619 if ((total_tx > EMLSR_MIN_TX && 620 sec_link_tx_perc < EMLSR_SEC_LINK_MIN_PERC) || 621 (total_rx > EMLSR_MIN_RX && 622 sec_link_rx_perc < EMLSR_SEC_LINK_MIN_PERC)) { 623 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_LINK_USAGE, 624 iwl_mld_get_primary_link(vif)); 625 return; 626 } 627 628 /* Check again when the next window ends */ 629 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 630 &mld_vif->emlsr.check_tpt_wk, 631 round_jiffies_relative(IWL_MLD_TPT_COUNT_WINDOW)); 632 } 633 634 void iwl_mld_emlsr_unblock_tpt_wk(struct wiphy *wiphy, struct wiphy_work *wk) 635 { 636 struct iwl_mld_vif *mld_vif = container_of(wk, struct iwl_mld_vif, 637 emlsr.unblock_tpt_wk); 638 struct ieee80211_vif *vif = 639 container_of((void *)mld_vif, struct ieee80211_vif, drv_priv); 640 641 iwl_mld_unblock_emlsr(mld_vif->mld, vif, IWL_MLD_EMLSR_BLOCKED_TPT); 642 } 643 644 /* 645 * Link selection 646 */ 647 648 s8 iwl_mld_get_emlsr_rssi_thresh(struct iwl_mld *mld, 649 const struct cfg80211_chan_def *chandef, 650 bool low) 651 { 652 if (WARN_ON(chandef->chan->band != NL80211_BAND_2GHZ && 653 chandef->chan->band != NL80211_BAND_5GHZ && 654 chandef->chan->band != NL80211_BAND_6GHZ)) 655 return S8_MAX; 656 657 #define RSSI_THRESHOLD(_low, _bw) \ 658 (_low) ? IWL_MLD_LOW_RSSI_THRESH_##_bw##MHZ \ 659 : IWL_MLD_HIGH_RSSI_THRESH_##_bw##MHZ 660 661 switch (chandef->width) { 662 case NL80211_CHAN_WIDTH_20_NOHT: 663 case NL80211_CHAN_WIDTH_20: 664 /* 320 MHz has the same thresholds as 20 MHz */ 665 case NL80211_CHAN_WIDTH_320: 666 return RSSI_THRESHOLD(low, 20); 667 case NL80211_CHAN_WIDTH_40: 668 return RSSI_THRESHOLD(low, 40); 669 case NL80211_CHAN_WIDTH_80: 670 return RSSI_THRESHOLD(low, 80); 671 case NL80211_CHAN_WIDTH_160: 672 return RSSI_THRESHOLD(low, 160); 673 default: 674 WARN_ON(1); 675 return S8_MAX; 676 } 677 #undef RSSI_THRESHOLD 678 } 679 680 static u32 681 iwl_mld_emlsr_disallowed_with_link(struct iwl_mld *mld, 682 struct ieee80211_vif *vif, 683 struct iwl_mld_link_sel_data *link, 684 bool primary) 685 { 686 struct wiphy *wiphy = mld->wiphy; 687 struct ieee80211_bss_conf *conf; 688 u32 ret = 0; 689 690 conf = wiphy_dereference(wiphy, vif->link_conf[link->link_id]); 691 if (WARN_ON_ONCE(!conf)) 692 return IWL_MLD_EMLSR_EXIT_INVALID; 693 694 if (link->chandef->chan->band == NL80211_BAND_2GHZ && mld->bt_is_active) 695 ret |= IWL_MLD_EMLSR_EXIT_BT_COEX; 696 697 if (link->signal < 698 iwl_mld_get_emlsr_rssi_thresh(mld, link->chandef, false)) 699 ret |= IWL_MLD_EMLSR_EXIT_LOW_RSSI; 700 701 if (conf->csa_active) 702 ret |= IWL_MLD_EMLSR_EXIT_CSA; 703 704 if (ret) { 705 IWL_DEBUG_INFO(mld, 706 "Link %d is not allowed for EMLSR as %s\n", 707 link->link_id, 708 primary ? "primary" : "secondary"); 709 iwl_mld_print_emlsr_exit(mld, ret); 710 } 711 712 return ret; 713 } 714 715 static u8 716 iwl_mld_set_link_sel_data(struct iwl_mld *mld, 717 struct ieee80211_vif *vif, 718 struct iwl_mld_link_sel_data *data, 719 unsigned long usable_links, 720 u8 *best_link_idx) 721 { 722 u8 n_data = 0; 723 u16 max_grade = 0; 724 unsigned long link_id; 725 726 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 727 struct ieee80211_bss_conf *link_conf = 728 link_conf_dereference_protected(vif, link_id); 729 730 if (WARN_ON_ONCE(!link_conf)) 731 continue; 732 733 /* Ignore any BSS that was not seen in the last MLO scan */ 734 if (ktime_before(link_conf->bss->ts_boottime, 735 mld->scan.last_mlo_scan_time)) 736 continue; 737 738 data[n_data].link_id = link_id; 739 data[n_data].chandef = &link_conf->chanreq.oper; 740 data[n_data].signal = MBM_TO_DBM(link_conf->bss->signal); 741 data[n_data].grade = iwl_mld_get_link_grade(mld, link_conf); 742 743 if (n_data == 0 || data[n_data].grade > max_grade) { 744 max_grade = data[n_data].grade; 745 *best_link_idx = n_data; 746 } 747 n_data++; 748 } 749 750 return n_data; 751 } 752 753 static u32 754 iwl_mld_get_min_chan_load_thresh(struct ieee80211_chanctx_conf *chanctx) 755 { 756 const struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(chanctx); 757 758 switch (phy->chandef.width) { 759 case NL80211_CHAN_WIDTH_320: 760 case NL80211_CHAN_WIDTH_160: 761 return 5; 762 case NL80211_CHAN_WIDTH_80: 763 return 7; 764 default: 765 break; 766 } 767 return 10; 768 } 769 770 static bool 771 iwl_mld_channel_load_allows_emlsr(struct iwl_mld *mld, 772 struct ieee80211_vif *vif, 773 const struct iwl_mld_link_sel_data *a, 774 const struct iwl_mld_link_sel_data *b) 775 { 776 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 777 struct iwl_mld_link *link_a = 778 iwl_mld_link_dereference_check(mld_vif, a->link_id); 779 struct ieee80211_chanctx_conf *chanctx_a = NULL; 780 u32 bw_a, bw_b, ratio; 781 u32 primary_load_perc; 782 783 if (!link_a || !link_a->active) { 784 IWL_DEBUG_EHT(mld, "Primary link is not active. Can't enter EMLSR\n"); 785 return false; 786 } 787 788 chanctx_a = wiphy_dereference(mld->wiphy, link_a->chan_ctx); 789 790 if (WARN_ON(!chanctx_a)) 791 return false; 792 793 primary_load_perc = 794 iwl_mld_phy_from_mac80211(chanctx_a)->avg_channel_load_not_by_us; 795 796 IWL_DEBUG_EHT(mld, "Average channel load not by us: %u\n", primary_load_perc); 797 798 if (primary_load_perc < iwl_mld_get_min_chan_load_thresh(chanctx_a)) { 799 IWL_DEBUG_EHT(mld, "Channel load is below the minimum threshold\n"); 800 return false; 801 } 802 803 if (iwl_mld_vif_low_latency(mld_vif)) { 804 IWL_DEBUG_EHT(mld, "Low latency vif, EMLSR is allowed\n"); 805 return true; 806 } 807 808 if (a->chandef->width <= b->chandef->width) 809 return true; 810 811 bw_a = cfg80211_chandef_get_width(a->chandef); 812 bw_b = cfg80211_chandef_get_width(b->chandef); 813 ratio = bw_a / bw_b; 814 815 switch (ratio) { 816 case 2: 817 return primary_load_perc > 25; 818 case 4: 819 return primary_load_perc > 40; 820 case 8: 821 case 16: 822 return primary_load_perc > 50; 823 } 824 825 return false; 826 } 827 828 VISIBLE_IF_IWLWIFI_KUNIT u32 829 iwl_mld_emlsr_pair_state(struct ieee80211_vif *vif, 830 struct iwl_mld_link_sel_data *a, 831 struct iwl_mld_link_sel_data *b) 832 { 833 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 834 struct iwl_mld *mld = mld_vif->mld; 835 u32 reason_mask = 0; 836 837 /* Per-link considerations */ 838 reason_mask = iwl_mld_emlsr_disallowed_with_link(mld, vif, a, true); 839 if (reason_mask) 840 return reason_mask; 841 842 reason_mask = iwl_mld_emlsr_disallowed_with_link(mld, vif, b, false); 843 if (reason_mask) 844 return reason_mask; 845 846 if (a->chandef->chan->band == b->chandef->chan->band) { 847 const struct cfg80211_chan_def *c_low = a->chandef; 848 const struct cfg80211_chan_def *c_high = b->chandef; 849 u32 c_low_upper_edge, c_high_lower_edge; 850 851 if (c_low->chan->center_freq > c_high->chan->center_freq) 852 swap(c_low, c_high); 853 854 c_low_upper_edge = c_low->chan->center_freq + 855 cfg80211_chandef_get_width(c_low) / 2; 856 c_high_lower_edge = c_high->chan->center_freq - 857 cfg80211_chandef_get_width(c_high) / 2; 858 859 if (a->chandef->chan->band == NL80211_BAND_5GHZ && 860 c_low_upper_edge <= 5330 && c_high_lower_edge >= 5490) { 861 /* This case is fine - HW/FW can deal with it, there's 862 * enough separation between the two channels. 863 */ 864 } else { 865 reason_mask |= IWL_MLD_EMLSR_EXIT_EQUAL_BAND; 866 } 867 } 868 if (!iwl_mld_channel_load_allows_emlsr(mld, vif, a, b)) 869 reason_mask |= IWL_MLD_EMLSR_EXIT_CHAN_LOAD; 870 871 if (reason_mask) { 872 IWL_DEBUG_INFO(mld, 873 "Links %d and %d are not a valid pair for EMLSR\n", 874 a->link_id, b->link_id); 875 IWL_DEBUG_INFO(mld, 876 "Links bandwidth are: %d and %d\n", 877 nl80211_chan_width_to_mhz(a->chandef->width), 878 nl80211_chan_width_to_mhz(b->chandef->width)); 879 iwl_mld_print_emlsr_exit(mld, reason_mask); 880 } 881 882 return reason_mask; 883 } 884 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_emlsr_pair_state); 885 886 /* Calculation is done with fixed-point with a scaling factor of 1/256 */ 887 #define SCALE_FACTOR 256 888 889 /* 890 * Returns the combined grade of two given links. 891 * Returns 0 if EMLSR is not allowed with these 2 links. 892 */ 893 static 894 unsigned int iwl_mld_get_emlsr_grade(struct iwl_mld *mld, 895 struct ieee80211_vif *vif, 896 struct iwl_mld_link_sel_data *a, 897 struct iwl_mld_link_sel_data *b, 898 u8 *primary_id) 899 { 900 struct ieee80211_bss_conf *primary_conf; 901 struct wiphy *wiphy = ieee80211_vif_to_wdev(vif)->wiphy; 902 unsigned int primary_load; 903 904 lockdep_assert_wiphy(wiphy); 905 906 /* a is always primary, b is always secondary */ 907 if (b->grade > a->grade) 908 swap(a, b); 909 910 *primary_id = a->link_id; 911 912 if (iwl_mld_emlsr_pair_state(vif, a, b)) 913 return 0; 914 915 primary_conf = wiphy_dereference(wiphy, vif->link_conf[*primary_id]); 916 917 if (WARN_ON_ONCE(!primary_conf)) 918 return 0; 919 920 primary_load = iwl_mld_get_chan_load(mld, primary_conf); 921 922 /* The more the primary link is loaded, the more worthwhile EMLSR becomes */ 923 return a->grade + ((b->grade * primary_load) / SCALE_FACTOR); 924 } 925 926 static void _iwl_mld_select_links(struct iwl_mld *mld, 927 struct ieee80211_vif *vif) 928 { 929 struct iwl_mld_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS]; 930 struct iwl_mld_link_sel_data *best_link; 931 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 932 int max_active_links = iwl_mld_max_active_links(mld, vif); 933 u16 new_active, usable_links = ieee80211_vif_usable_links(vif); 934 u8 best_idx, new_primary, n_data; 935 u16 max_grade; 936 937 lockdep_assert_wiphy(mld->wiphy); 938 939 if (!mld_vif->authorized || hweight16(usable_links) <= 1) 940 return; 941 942 if (WARN(ktime_before(mld->scan.last_mlo_scan_time, 943 ktime_sub_ns(ktime_get_boottime_ns(), 944 5ULL * NSEC_PER_SEC)), 945 "Last MLO scan was too long ago, can't select links\n")) 946 return; 947 948 /* The logic below is simple and not suited for more than 2 links */ 949 WARN_ON_ONCE(max_active_links > 2); 950 951 n_data = iwl_mld_set_link_sel_data(mld, vif, data, usable_links, 952 &best_idx); 953 954 if (!n_data) { 955 IWL_DEBUG_EHT(mld, 956 "Couldn't find a valid grade for any link!\n"); 957 return; 958 } 959 960 /* Default to selecting the single best link */ 961 best_link = &data[best_idx]; 962 new_primary = best_link->link_id; 963 new_active = BIT(best_link->link_id); 964 max_grade = best_link->grade; 965 966 /* If EMLSR is not possible, activate the best link */ 967 if (max_active_links == 1 || n_data == 1 || 968 !iwl_mld_vif_has_emlsr_cap(vif) || !IWL_MLD_AUTO_EML_ENABLE || 969 mld_vif->emlsr.blocked_reasons) 970 goto set_active; 971 972 /* Try to find the best link combination */ 973 for (u8 a = 0; a < n_data; a++) { 974 for (u8 b = a + 1; b < n_data; b++) { 975 u8 best_in_pair; 976 u16 emlsr_grade = 977 iwl_mld_get_emlsr_grade(mld, vif, 978 &data[a], &data[b], 979 &best_in_pair); 980 981 /* 982 * Prefer (new) EMLSR combination to prefer EMLSR over 983 * a single link. 984 */ 985 if (emlsr_grade < max_grade) 986 continue; 987 988 max_grade = emlsr_grade; 989 new_primary = best_in_pair; 990 new_active = BIT(data[a].link_id) | 991 BIT(data[b].link_id); 992 } 993 } 994 995 set_active: 996 IWL_DEBUG_INFO(mld, "Link selection result: 0x%x. Primary = %d\n", 997 new_active, new_primary); 998 999 mld_vif->emlsr.selected_primary = new_primary; 1000 mld_vif->emlsr.selected_links = new_active; 1001 1002 ieee80211_set_active_links_async(vif, new_active); 1003 } 1004 1005 static void iwl_mld_vif_iter_select_links(void *_data, u8 *mac, 1006 struct ieee80211_vif *vif) 1007 { 1008 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1009 struct iwl_mld *mld = mld_vif->mld; 1010 1011 _iwl_mld_select_links(mld, vif); 1012 } 1013 1014 void iwl_mld_select_links(struct iwl_mld *mld) 1015 { 1016 ieee80211_iterate_active_interfaces_mtx(mld->hw, 1017 IEEE80211_IFACE_ITER_NORMAL, 1018 iwl_mld_vif_iter_select_links, 1019 NULL); 1020 } 1021 1022 static void iwl_mld_emlsr_check_bt_iter(void *_data, u8 *mac, 1023 struct ieee80211_vif *vif) 1024 { 1025 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1026 struct iwl_mld *mld = mld_vif->mld; 1027 struct ieee80211_bss_conf *link; 1028 unsigned int link_id; 1029 1030 if (!iwl_mld_vif_has_emlsr_cap(vif)) 1031 return; 1032 1033 if (!mld->bt_is_active) { 1034 iwl_mld_retry_emlsr(mld, vif); 1035 return; 1036 } 1037 1038 /* BT is turned ON but we are not in EMLSR, nothing to do */ 1039 if (!iwl_mld_emlsr_active(vif)) 1040 return; 1041 1042 /* In EMLSR and BT is turned ON */ 1043 1044 for_each_vif_active_link(vif, link, link_id) { 1045 if (WARN_ON(!link->chanreq.oper.chan)) 1046 continue; 1047 1048 if (link->chanreq.oper.chan->band == NL80211_BAND_2GHZ) { 1049 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_BT_COEX, 1050 iwl_mld_get_primary_link(vif)); 1051 return; 1052 } 1053 } 1054 } 1055 1056 void iwl_mld_emlsr_check_bt(struct iwl_mld *mld) 1057 { 1058 ieee80211_iterate_active_interfaces_mtx(mld->hw, 1059 IEEE80211_IFACE_ITER_NORMAL, 1060 iwl_mld_emlsr_check_bt_iter, 1061 NULL); 1062 } 1063 1064 struct iwl_mld_chan_load_data { 1065 struct iwl_mld_phy *phy; 1066 u32 prev_chan_load_not_by_us; 1067 }; 1068 1069 static void iwl_mld_chan_load_update_iter(void *_data, u8 *mac, 1070 struct ieee80211_vif *vif) 1071 { 1072 struct iwl_mld_chan_load_data *data = _data; 1073 const struct iwl_mld_phy *phy = data->phy; 1074 struct ieee80211_chanctx_conf *chanctx = 1075 container_of((const void *)phy, struct ieee80211_chanctx_conf, 1076 drv_priv); 1077 struct iwl_mld *mld = iwl_mld_vif_from_mac80211(vif)->mld; 1078 struct ieee80211_bss_conf *prim_link; 1079 unsigned int prim_link_id; 1080 1081 prim_link_id = iwl_mld_get_primary_link(vif); 1082 prim_link = link_conf_dereference_protected(vif, prim_link_id); 1083 1084 if (WARN_ON(!prim_link)) 1085 return; 1086 1087 if (chanctx != rcu_access_pointer(prim_link->chanctx_conf)) 1088 return; 1089 1090 if (iwl_mld_emlsr_active(vif)) { 1091 int chan_load = iwl_mld_get_chan_load_by_others(mld, prim_link, 1092 true); 1093 1094 if (chan_load < 0) 1095 return; 1096 1097 /* chan_load is in range [0,255] */ 1098 if (chan_load < NORMALIZE_PERCENT_TO_255(IWL_MLD_EXIT_EMLSR_CHAN_LOAD)) 1099 iwl_mld_exit_emlsr(mld, vif, 1100 IWL_MLD_EMLSR_EXIT_CHAN_LOAD, 1101 prim_link_id); 1102 } else { 1103 u32 old_chan_load = data->prev_chan_load_not_by_us; 1104 u32 new_chan_load = phy->avg_channel_load_not_by_us; 1105 u32 min_thresh = iwl_mld_get_min_chan_load_thresh(chanctx); 1106 1107 #define THRESHOLD_CROSSED(threshold) \ 1108 (old_chan_load <= (threshold) && new_chan_load > (threshold)) 1109 1110 if (THRESHOLD_CROSSED(min_thresh) || THRESHOLD_CROSSED(25) || 1111 THRESHOLD_CROSSED(40) || THRESHOLD_CROSSED(50)) 1112 iwl_mld_retry_emlsr(mld, vif); 1113 #undef THRESHOLD_CROSSED 1114 } 1115 } 1116 1117 void iwl_mld_emlsr_check_chan_load(struct ieee80211_hw *hw, 1118 struct iwl_mld_phy *phy, 1119 u32 prev_chan_load_not_by_us) 1120 { 1121 struct iwl_mld_chan_load_data data = { 1122 .phy = phy, 1123 .prev_chan_load_not_by_us = prev_chan_load_not_by_us, 1124 }; 1125 1126 ieee80211_iterate_active_interfaces_mtx(hw, 1127 IEEE80211_IFACE_ITER_NORMAL, 1128 iwl_mld_chan_load_update_iter, 1129 &data); 1130 } 1131 1132 void iwl_mld_retry_emlsr(struct iwl_mld *mld, struct ieee80211_vif *vif) 1133 { 1134 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1135 1136 if (!IWL_MLD_AUTO_EML_ENABLE || !iwl_mld_vif_has_emlsr_cap(vif) || 1137 iwl_mld_emlsr_active(vif) || mld_vif->emlsr.blocked_reasons) 1138 return; 1139 1140 iwl_mld_int_mlo_scan(mld, vif); 1141 } 1142 1143 static void iwl_mld_ignore_tpt_iter(void *data, u8 *mac, 1144 struct ieee80211_vif *vif) 1145 { 1146 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1147 struct iwl_mld *mld = mld_vif->mld; 1148 struct iwl_mld_sta *mld_sta; 1149 bool *start = (void *)data; 1150 1151 /* check_tpt_wk is only used when TPT block isn't set */ 1152 if (mld_vif->emlsr.blocked_reasons & IWL_MLD_EMLSR_BLOCKED_TPT || 1153 !IWL_MLD_AUTO_EML_ENABLE || !mld_vif->ap_sta) 1154 return; 1155 1156 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 1157 1158 /* We only count for the AP sta in a MLO connection */ 1159 if (!mld_sta->mpdu_counters) 1160 return; 1161 1162 if (*start) { 1163 wiphy_delayed_work_cancel(mld_vif->mld->wiphy, 1164 &mld_vif->emlsr.check_tpt_wk); 1165 IWL_DEBUG_EHT(mld, "TPT check disabled\n"); 1166 return; 1167 } 1168 1169 /* Clear the counters so we start from the beginning */ 1170 for (int q = 0; q < mld->trans->info.num_rxqs; q++) { 1171 struct iwl_mld_per_q_mpdu_counter *queue_counter = 1172 &mld_sta->mpdu_counters[q]; 1173 1174 spin_lock_bh(&queue_counter->lock); 1175 1176 memset(queue_counter->per_link, 0, 1177 sizeof(queue_counter->per_link)); 1178 1179 spin_unlock_bh(&queue_counter->lock); 1180 } 1181 1182 /* Schedule the check in 5 seconds */ 1183 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 1184 &mld_vif->emlsr.check_tpt_wk, 1185 round_jiffies_relative(IWL_MLD_TPT_COUNT_WINDOW)); 1186 IWL_DEBUG_EHT(mld, "TPT check enabled\n"); 1187 } 1188 1189 void iwl_mld_start_ignoring_tpt_updates(struct iwl_mld *mld) 1190 { 1191 bool start = true; 1192 1193 ieee80211_iterate_active_interfaces_mtx(mld->hw, 1194 IEEE80211_IFACE_ITER_NORMAL, 1195 iwl_mld_ignore_tpt_iter, 1196 &start); 1197 } 1198 1199 void iwl_mld_stop_ignoring_tpt_updates(struct iwl_mld *mld) 1200 { 1201 bool start = false; 1202 1203 ieee80211_iterate_active_interfaces_mtx(mld->hw, 1204 IEEE80211_IFACE_ITER_NORMAL, 1205 iwl_mld_ignore_tpt_iter, 1206 &start); 1207 } 1208