1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 6 #include "mld.h" 7 #include "stats.h" 8 #include "sta.h" 9 #include "mlo.h" 10 #include "hcmd.h" 11 #include "iface.h" 12 #include "scan.h" 13 #include "phy.h" 14 #include "fw/api/stats.h" 15 16 static int iwl_mld_send_fw_stats_cmd(struct iwl_mld *mld, u32 cfg_mask, 17 u32 cfg_time, u32 type_mask) 18 { 19 u32 cmd_id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD); 20 struct iwl_system_statistics_cmd stats_cmd = { 21 .cfg_mask = cpu_to_le32(cfg_mask), 22 .config_time_sec = cpu_to_le32(cfg_time), 23 .type_id_mask = cpu_to_le32(type_mask), 24 }; 25 26 return iwl_mld_send_cmd_pdu(mld, cmd_id, &stats_cmd); 27 } 28 29 int iwl_mld_clear_stats_in_fw(struct iwl_mld *mld) 30 { 31 u32 cfg_mask = IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK; 32 u32 type_mask = IWL_STATS_NTFY_TYPE_ID_OPER | 33 IWL_STATS_NTFY_TYPE_ID_OPER_PART1; 34 35 return iwl_mld_send_fw_stats_cmd(mld, cfg_mask, 0, type_mask); 36 } 37 38 static void 39 iwl_mld_fill_stats_from_oper_notif(struct iwl_mld *mld, 40 struct iwl_rx_packet *pkt, 41 u8 fw_sta_id, struct station_info *sinfo) 42 { 43 const struct iwl_system_statistics_notif_oper *notif = 44 (void *)&pkt->data; 45 const struct iwl_stats_ntfy_per_sta *per_sta = 46 ¬if->per_sta[fw_sta_id]; 47 struct ieee80211_link_sta *link_sta; 48 struct iwl_mld_link_sta *mld_link_sta; 49 50 /* 0 isn't a valid value, but FW might send 0. 51 * In that case, set the latest non-zero value we stored 52 */ 53 rcu_read_lock(); 54 55 link_sta = rcu_dereference(mld->fw_id_to_link_sta[fw_sta_id]); 56 if (IS_ERR_OR_NULL(link_sta)) 57 goto unlock; 58 59 mld_link_sta = iwl_mld_link_sta_from_mac80211(link_sta); 60 if (WARN_ON(!mld_link_sta)) 61 goto unlock; 62 63 if (per_sta->average_energy) 64 mld_link_sta->signal_avg = 65 -(s8)le32_to_cpu(per_sta->average_energy); 66 67 sinfo->signal_avg = mld_link_sta->signal_avg; 68 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 69 70 unlock: 71 rcu_read_unlock(); 72 } 73 74 struct iwl_mld_stats_data { 75 u8 fw_sta_id; 76 struct station_info *sinfo; 77 struct iwl_mld *mld; 78 }; 79 80 static bool iwl_mld_wait_stats_handler(struct iwl_notif_wait_data *notif_data, 81 struct iwl_rx_packet *pkt, void *data) 82 { 83 struct iwl_mld_stats_data *stats_data = data; 84 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 85 86 switch (cmd) { 87 case WIDE_ID(STATISTICS_GROUP, STATISTICS_OPER_NOTIF): 88 iwl_mld_fill_stats_from_oper_notif(stats_data->mld, pkt, 89 stats_data->fw_sta_id, 90 stats_data->sinfo); 91 break; 92 case WIDE_ID(STATISTICS_GROUP, STATISTICS_OPER_PART1_NOTIF): 93 break; 94 case WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF): 95 return true; 96 } 97 98 return false; 99 } 100 101 static int 102 iwl_mld_fw_stats_to_mac80211(struct iwl_mld *mld, struct iwl_mld_sta *mld_sta, 103 struct station_info *sinfo) 104 { 105 u32 cfg_mask = IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK | 106 IWL_STATS_CFG_FLG_RESET_MSK; 107 u32 type_mask = IWL_STATS_NTFY_TYPE_ID_OPER | 108 IWL_STATS_NTFY_TYPE_ID_OPER_PART1; 109 static const u16 notifications[] = { 110 WIDE_ID(STATISTICS_GROUP, STATISTICS_OPER_NOTIF), 111 WIDE_ID(STATISTICS_GROUP, STATISTICS_OPER_PART1_NOTIF), 112 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF), 113 }; 114 struct iwl_mld_stats_data wait_stats_data = { 115 /* We don't support drv_sta_statistics in EMLSR */ 116 .fw_sta_id = mld_sta->deflink.fw_id, 117 .sinfo = sinfo, 118 .mld = mld, 119 }; 120 struct iwl_notification_wait stats_wait; 121 int ret; 122 123 iwl_init_notification_wait(&mld->notif_wait, &stats_wait, 124 notifications, ARRAY_SIZE(notifications), 125 iwl_mld_wait_stats_handler, 126 &wait_stats_data); 127 128 ret = iwl_mld_send_fw_stats_cmd(mld, cfg_mask, 0, type_mask); 129 if (ret) { 130 iwl_remove_notification(&mld->notif_wait, &stats_wait); 131 return ret; 132 } 133 134 /* Wait 500ms for OPERATIONAL, PART1, and END notifications, 135 * which should be sufficient for the firmware to gather data 136 * from all LMACs and send notifications to the host. 137 */ 138 ret = iwl_wait_notification(&mld->notif_wait, &stats_wait, HZ / 2); 139 if (ret) 140 return ret; 141 142 /* When periodic statistics are sent, FW will clear its statistics DB. 143 * If the statistics request here happens shortly afterwards, 144 * the response will contain data collected over a short time 145 * interval. The response we got here shouldn't be processed by 146 * the general statistics processing because it's incomplete. 147 * So, we delete it from the list so it won't be processed. 148 */ 149 iwl_mld_delete_handlers(mld, notifications, ARRAY_SIZE(notifications)); 150 151 return 0; 152 } 153 154 #define PERIODIC_STATS_SECONDS 5 155 156 int iwl_mld_request_periodic_fw_stats(struct iwl_mld *mld, bool enable) 157 { 158 u32 cfg_mask = enable ? 0 : IWL_STATS_CFG_FLG_DISABLE_NTFY_MSK; 159 u32 type_mask = enable ? (IWL_STATS_NTFY_TYPE_ID_OPER | 160 IWL_STATS_NTFY_TYPE_ID_OPER_PART1) : 0; 161 u32 cfg_time = enable ? PERIODIC_STATS_SECONDS : 0; 162 163 return iwl_mld_send_fw_stats_cmd(mld, cfg_mask, cfg_time, type_mask); 164 } 165 166 static void iwl_mld_sta_stats_fill_txrate(struct iwl_mld_sta *mld_sta, 167 struct station_info *sinfo) 168 { 169 struct rate_info *rinfo = &sinfo->txrate; 170 u32 rate_n_flags = mld_sta->deflink.last_rate_n_flags; 171 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 172 u32 gi_ltf; 173 174 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 175 176 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 177 case RATE_MCS_CHAN_WIDTH_20: 178 rinfo->bw = RATE_INFO_BW_20; 179 break; 180 case RATE_MCS_CHAN_WIDTH_40: 181 rinfo->bw = RATE_INFO_BW_40; 182 break; 183 case RATE_MCS_CHAN_WIDTH_80: 184 rinfo->bw = RATE_INFO_BW_80; 185 break; 186 case RATE_MCS_CHAN_WIDTH_160: 187 rinfo->bw = RATE_INFO_BW_160; 188 break; 189 case RATE_MCS_CHAN_WIDTH_320: 190 rinfo->bw = RATE_INFO_BW_320; 191 break; 192 } 193 194 if (format == RATE_MCS_CCK_MSK || format == RATE_MCS_LEGACY_OFDM_MSK) { 195 int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK); 196 197 /* add the offset needed to get to the legacy ofdm indices */ 198 if (format == RATE_MCS_LEGACY_OFDM_MSK) 199 rate += IWL_FIRST_OFDM_RATE; 200 201 switch (rate) { 202 case IWL_RATE_1M_INDEX: 203 rinfo->legacy = 10; 204 break; 205 case IWL_RATE_2M_INDEX: 206 rinfo->legacy = 20; 207 break; 208 case IWL_RATE_5M_INDEX: 209 rinfo->legacy = 55; 210 break; 211 case IWL_RATE_11M_INDEX: 212 rinfo->legacy = 110; 213 break; 214 case IWL_RATE_6M_INDEX: 215 rinfo->legacy = 60; 216 break; 217 case IWL_RATE_9M_INDEX: 218 rinfo->legacy = 90; 219 break; 220 case IWL_RATE_12M_INDEX: 221 rinfo->legacy = 120; 222 break; 223 case IWL_RATE_18M_INDEX: 224 rinfo->legacy = 180; 225 break; 226 case IWL_RATE_24M_INDEX: 227 rinfo->legacy = 240; 228 break; 229 case IWL_RATE_36M_INDEX: 230 rinfo->legacy = 360; 231 break; 232 case IWL_RATE_48M_INDEX: 233 rinfo->legacy = 480; 234 break; 235 case IWL_RATE_54M_INDEX: 236 rinfo->legacy = 540; 237 } 238 return; 239 } 240 241 rinfo->nss = u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1; 242 243 if (format == RATE_MCS_HT_MSK) 244 rinfo->mcs = RATE_HT_MCS_INDEX(rate_n_flags); 245 else 246 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK); 247 248 if (rate_n_flags & RATE_MCS_SGI_MSK) 249 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 250 251 switch (format) { 252 case RATE_MCS_EHT_MSK: 253 rinfo->flags |= RATE_INFO_FLAGS_EHT_MCS; 254 break; 255 case RATE_MCS_HE_MSK: 256 gi_ltf = u32_get_bits(rate_n_flags, RATE_MCS_HE_GI_LTF_MSK); 257 258 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 259 260 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 261 rinfo->bw = RATE_INFO_BW_HE_RU; 262 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 263 } 264 265 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 266 case RATE_MCS_HE_TYPE_SU: 267 case RATE_MCS_HE_TYPE_EXT_SU: 268 if (gi_ltf == 0 || gi_ltf == 1) 269 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 270 else if (gi_ltf == 2) 271 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 272 else if (gi_ltf == 3) 273 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 274 else 275 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 276 break; 277 case RATE_MCS_HE_TYPE_MU: 278 if (gi_ltf == 0 || gi_ltf == 1) 279 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 280 else if (gi_ltf == 2) 281 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 282 else 283 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 284 break; 285 case RATE_MCS_HE_TYPE_TRIG: 286 if (gi_ltf == 0 || gi_ltf == 1) 287 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 288 else 289 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 290 break; 291 } 292 293 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 294 rinfo->he_dcm = 1; 295 break; 296 case RATE_MCS_HT_MSK: 297 rinfo->flags |= RATE_INFO_FLAGS_MCS; 298 break; 299 case RATE_MCS_VHT_MSK: 300 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 301 break; 302 } 303 } 304 305 void iwl_mld_mac80211_sta_statistics(struct ieee80211_hw *hw, 306 struct ieee80211_vif *vif, 307 struct ieee80211_sta *sta, 308 struct station_info *sinfo) 309 { 310 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 311 312 /* This API is not EMLSR ready, so we cannot provide complete 313 * information if EMLSR is active 314 */ 315 if (hweight16(vif->active_links) > 1) 316 return; 317 318 if (iwl_mld_fw_stats_to_mac80211(mld_sta->mld, mld_sta, sinfo)) 319 return; 320 321 iwl_mld_sta_stats_fill_txrate(mld_sta, sinfo); 322 323 /* TODO: NL80211_STA_INFO_BEACON_RX */ 324 325 /* TODO: NL80211_STA_INFO_BEACON_SIGNAL_AVG */ 326 } 327 328 #define IWL_MLD_TRAFFIC_LOAD_MEDIUM_THRESH 10 /* percentage */ 329 #define IWL_MLD_TRAFFIC_LOAD_HIGH_THRESH 50 /* percentage */ 330 #define IWL_MLD_TRAFFIC_LOAD_MIN_WINDOW_USEC (500 * 1000) 331 332 static u8 iwl_mld_stats_load_percentage(u32 last_ts_usec, u32 curr_ts_usec, 333 u32 total_airtime_usec) 334 { 335 u32 elapsed_usec = curr_ts_usec - last_ts_usec; 336 337 if (elapsed_usec < IWL_MLD_TRAFFIC_LOAD_MIN_WINDOW_USEC) 338 return 0; 339 340 return (100 * total_airtime_usec / elapsed_usec); 341 } 342 343 static void iwl_mld_stats_recalc_traffic_load(struct iwl_mld *mld, 344 u32 total_airtime_usec, 345 u32 curr_ts_usec) 346 { 347 u32 last_ts_usec = mld->scan.traffic_load.last_stats_ts_usec; 348 u8 load_prec; 349 350 /* Skip the calculation as this is the first notification received */ 351 if (!last_ts_usec) 352 goto out; 353 354 load_prec = iwl_mld_stats_load_percentage(last_ts_usec, curr_ts_usec, 355 total_airtime_usec); 356 357 if (load_prec > IWL_MLD_TRAFFIC_LOAD_HIGH_THRESH) 358 mld->scan.traffic_load.status = IWL_MLD_TRAFFIC_HIGH; 359 else if (load_prec > IWL_MLD_TRAFFIC_LOAD_MEDIUM_THRESH) 360 mld->scan.traffic_load.status = IWL_MLD_TRAFFIC_MEDIUM; 361 else 362 mld->scan.traffic_load.status = IWL_MLD_TRAFFIC_LOW; 363 364 out: 365 mld->scan.traffic_load.last_stats_ts_usec = curr_ts_usec; 366 } 367 368 static void iwl_mld_update_link_sig(struct ieee80211_vif *vif, int sig, 369 struct ieee80211_bss_conf *bss_conf) 370 { 371 struct iwl_mld *mld = iwl_mld_vif_from_mac80211(vif)->mld; 372 int exit_emlsr_thresh; 373 374 if (sig == 0) { 375 IWL_DEBUG_RX(mld, "RSSI is 0 - skip signal based decision\n"); 376 return; 377 } 378 379 /* TODO: task=statistics handle CQM notifications */ 380 381 if (sig < IWL_MLD_LOW_RSSI_MLO_SCAN_THRESH) 382 iwl_mld_int_mlo_scan(mld, vif); 383 384 if (!iwl_mld_emlsr_active(vif)) 385 return; 386 387 /* We are in EMLSR, check if we need to exit */ 388 exit_emlsr_thresh = 389 iwl_mld_get_emlsr_rssi_thresh(mld, &bss_conf->chanreq.oper, 390 true); 391 392 if (sig < exit_emlsr_thresh) 393 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_LOW_RSSI, 394 iwl_mld_get_other_link(vif, 395 bss_conf->link_id)); 396 } 397 398 static void 399 iwl_mld_process_per_link_stats(struct iwl_mld *mld, 400 const struct iwl_stats_ntfy_per_link *per_link, 401 u32 curr_ts_usec) 402 { 403 u32 total_airtime_usec = 0; 404 405 for (u32 fw_id = 0; 406 fw_id < ARRAY_SIZE(mld->fw_id_to_bss_conf); 407 fw_id++) { 408 const struct iwl_stats_ntfy_per_link *link_stats; 409 struct ieee80211_bss_conf *bss_conf; 410 int sig; 411 412 bss_conf = wiphy_dereference(mld->wiphy, 413 mld->fw_id_to_bss_conf[fw_id]); 414 if (!bss_conf || bss_conf->vif->type != NL80211_IFTYPE_STATION) 415 continue; 416 417 link_stats = &per_link[fw_id]; 418 419 total_airtime_usec += le32_to_cpu(link_stats->air_time); 420 421 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy); 422 iwl_mld_update_link_sig(bss_conf->vif, sig, bss_conf); 423 424 /* TODO: parse more fields here (task=statistics)*/ 425 } 426 427 iwl_mld_stats_recalc_traffic_load(mld, total_airtime_usec, 428 curr_ts_usec); 429 } 430 431 static void 432 iwl_mld_process_per_sta_stats(struct iwl_mld *mld, 433 const struct iwl_stats_ntfy_per_sta *per_sta) 434 { 435 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 436 struct ieee80211_link_sta *link_sta = 437 wiphy_dereference(mld->wiphy, 438 mld->fw_id_to_link_sta[i]); 439 struct iwl_mld_link_sta *mld_link_sta; 440 s8 avg_energy = 441 -(s8)le32_to_cpu(per_sta[i].average_energy); 442 443 if (IS_ERR_OR_NULL(link_sta) || !avg_energy) 444 continue; 445 446 mld_link_sta = iwl_mld_link_sta_from_mac80211(link_sta); 447 if (WARN_ON(!mld_link_sta)) 448 continue; 449 450 mld_link_sta->signal_avg = avg_energy; 451 } 452 } 453 454 static void iwl_mld_fill_chanctx_stats(struct ieee80211_hw *hw, 455 struct ieee80211_chanctx_conf *ctx, 456 void *data) 457 { 458 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 459 const struct iwl_stats_ntfy_per_phy *per_phy = data; 460 u32 new_load, old_load; 461 462 if (WARN_ON(phy->fw_id >= IWL_STATS_MAX_PHY_OPERATIONAL)) 463 return; 464 465 phy->channel_load_by_us = 466 le32_to_cpu(per_phy[phy->fw_id].channel_load_by_us); 467 468 old_load = phy->avg_channel_load_not_by_us; 469 new_load = le32_to_cpu(per_phy[phy->fw_id].channel_load_not_by_us); 470 if (IWL_FW_CHECK(phy->mld, new_load > 100, "Invalid channel load %u\n", 471 new_load)) 472 return; 473 474 /* give a weight of 0.5 for the old value */ 475 phy->avg_channel_load_not_by_us = (new_load >> 1) + (old_load >> 1); 476 477 iwl_mld_emlsr_check_chan_load(hw, phy, old_load); 478 } 479 480 static void 481 iwl_mld_process_per_phy_stats(struct iwl_mld *mld, 482 const struct iwl_stats_ntfy_per_phy *per_phy) 483 { 484 ieee80211_iter_chan_contexts_mtx(mld->hw, 485 iwl_mld_fill_chanctx_stats, 486 (void *)(uintptr_t)per_phy); 487 488 } 489 490 void iwl_mld_handle_stats_oper_notif(struct iwl_mld *mld, 491 struct iwl_rx_packet *pkt) 492 { 493 const struct iwl_system_statistics_notif_oper *stats = 494 (void *)&pkt->data; 495 u32 curr_ts_usec = le32_to_cpu(stats->time_stamp); 496 497 BUILD_BUG_ON(ARRAY_SIZE(stats->per_sta) != IWL_STATION_COUNT_MAX); 498 BUILD_BUG_ON(ARRAY_SIZE(stats->per_link) < 499 ARRAY_SIZE(mld->fw_id_to_bss_conf)); 500 501 iwl_mld_process_per_link_stats(mld, stats->per_link, curr_ts_usec); 502 iwl_mld_process_per_sta_stats(mld, stats->per_sta); 503 iwl_mld_process_per_phy_stats(mld, stats->per_phy); 504 505 iwl_mld_check_omi_bw_reduction(mld); 506 } 507 508 void iwl_mld_handle_stats_oper_part1_notif(struct iwl_mld *mld, 509 struct iwl_rx_packet *pkt) 510 { 511 /* TODO */ 512 } 513 514