1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/unaligned.h> 8 #include <linux/etherdevice.h> 9 #include <linux/skbuff.h> 10 #include "iwl-trans.h" 11 #include "mvm.h" 12 #include "fw-api.h" 13 14 /* 15 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler 16 * 17 * Copies the phy information in mvm->last_phy_info, it will be used when the 18 * actual data will come from the fw in the next packet. 19 */ 20 void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 21 { 22 struct iwl_rx_packet *pkt = rxb_addr(rxb); 23 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 24 25 if (unlikely(pkt_len < sizeof(mvm->last_phy_info))) 26 return; 27 28 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); 29 mvm->ampdu_ref++; 30 31 #ifdef CONFIG_IWLWIFI_DEBUGFS 32 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 33 spin_lock(&mvm->drv_stats_lock); 34 mvm->drv_rx_stats.ampdu_count++; 35 spin_unlock(&mvm->drv_stats_lock); 36 } 37 #endif 38 } 39 40 /* 41 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 42 * 43 * Adds the rxb to a new skb and give it to mac80211 44 */ 45 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, 46 struct ieee80211_sta *sta, 47 struct napi_struct *napi, 48 struct sk_buff *skb, 49 struct ieee80211_hdr *hdr, u16 len, 50 u8 crypt_len, 51 struct iwl_rx_cmd_buffer *rxb) 52 { 53 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); 54 unsigned int fraglen; 55 56 /* 57 * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len, 58 * but those are all multiples of 4 long) all goes away, but we 59 * want the *end* of it, which is going to be the start of the IP 60 * header, to be aligned when it gets pulled in. 61 * The beginning of the skb->data is aligned on at least a 4-byte 62 * boundary after allocation. Everything here is aligned at least 63 * on a 2-byte boundary so we can just take hdrlen & 3 and pad by 64 * the result. 65 */ 66 skb_reserve(skb, hdrlen & 3); 67 68 /* If frame is small enough to fit in skb->head, pull it completely. 69 * If not, only pull ieee80211_hdr (including crypto if present, and 70 * an additional 8 bytes for SNAP/ethertype, see below) so that 71 * splice() or TCP coalesce are more efficient. 72 * 73 * Since, in addition, ieee80211_data_to_8023() always pull in at 74 * least 8 bytes (possibly more for mesh) we can do the same here 75 * to save the cost of doing it later. That still doesn't pull in 76 * the actual IP header since the typical case has a SNAP header. 77 * If the latter changes (there are efforts in the standards group 78 * to do so) we should revisit this and ieee80211_data_to_8023(). 79 */ 80 hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; 81 82 skb_put_data(skb, hdr, hdrlen); 83 fraglen = len - hdrlen; 84 85 if (fraglen) { 86 int offset = (u8 *)hdr + hdrlen - 87 (u8 *)rxb_addr(rxb) + rxb_offset(rxb); 88 89 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 90 fraglen, rxb->truesize); 91 } 92 93 ieee80211_rx_napi(mvm->hw, sta, skb, napi); 94 } 95 96 /* 97 * iwl_mvm_get_signal_strength - use new rx PHY INFO API 98 * values are reported by the fw as positive values - need to negate 99 * to obtain their dBM. Account for missing antennas by replacing 0 100 * values by -256dBm: practically 0 power and a non-feasible 8 bit value. 101 */ 102 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, 103 struct iwl_rx_phy_info *phy_info, 104 struct ieee80211_rx_status *rx_status) 105 { 106 int energy_a, energy_b, max_energy; 107 u32 val; 108 109 val = 110 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); 111 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> 112 IWL_RX_INFO_ENERGY_ANT_A_POS; 113 energy_a = energy_a ? -energy_a : S8_MIN; 114 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> 115 IWL_RX_INFO_ENERGY_ANT_B_POS; 116 energy_b = energy_b ? -energy_b : S8_MIN; 117 max_energy = max(energy_a, energy_b); 118 119 IWL_DEBUG_STATS(mvm, "energy In A %d B %d , and max %d\n", 120 energy_a, energy_b, max_energy); 121 122 rx_status->signal = max_energy; 123 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & 124 RX_RES_PHY_FLAGS_ANTENNA) 125 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 126 rx_status->chain_signal[0] = energy_a; 127 rx_status->chain_signal[1] = energy_b; 128 } 129 130 /* 131 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format 132 * @mvm: the mvm object 133 * @hdr: 80211 header 134 * @stats: status in mac80211's format 135 * @rx_pkt_status: status coming from fw 136 * 137 * returns non 0 value if the packet should be dropped 138 */ 139 static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, 140 struct ieee80211_hdr *hdr, 141 struct ieee80211_rx_status *stats, 142 u32 rx_pkt_status, 143 u8 *crypt_len) 144 { 145 if (!ieee80211_has_protected(hdr->frame_control) || 146 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 147 RX_MPDU_RES_STATUS_SEC_NO_ENC) 148 return 0; 149 150 /* packet was encrypted with unknown alg */ 151 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 152 RX_MPDU_RES_STATUS_SEC_ENC_ERR) 153 return 0; 154 155 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { 156 case RX_MPDU_RES_STATUS_SEC_CCM_ENC: 157 /* alg is CCM: check MIC only */ 158 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 159 return -1; 160 161 stats->flag |= RX_FLAG_DECRYPTED; 162 *crypt_len = IEEE80211_CCMP_HDR_LEN; 163 return 0; 164 165 case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: 166 /* Don't drop the frame and decrypt it in SW */ 167 if (!fw_has_api(&mvm->fw->ucode_capa, 168 IWL_UCODE_TLV_API_DEPRECATE_TTAK) && 169 !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) 170 return 0; 171 *crypt_len = IEEE80211_TKIP_IV_LEN; 172 fallthrough; 173 174 case RX_MPDU_RES_STATUS_SEC_WEP_ENC: 175 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) 176 return -1; 177 178 stats->flag |= RX_FLAG_DECRYPTED; 179 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 180 RX_MPDU_RES_STATUS_SEC_WEP_ENC) 181 *crypt_len = IEEE80211_WEP_IV_LEN; 182 return 0; 183 184 case RX_MPDU_RES_STATUS_SEC_EXT_ENC: 185 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 186 return -1; 187 stats->flag |= RX_FLAG_DECRYPTED; 188 return 0; 189 190 default: 191 /* Expected in monitor (not having the keys) */ 192 #if defined(__linux__) 193 if (!mvm->monitor_on) 194 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); 195 #elif defined(__FreeBSD__) 196 if (!mvm->monitor_on && net_ratelimit()) 197 IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, rx_pkt_status); 198 #endif 199 } 200 201 return 0; 202 } 203 204 static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm, 205 struct ieee80211_sta *sta, 206 struct ieee80211_hdr *hdr, u32 len, 207 struct iwl_rx_phy_info *phy_info, 208 u32 rate_n_flags) 209 { 210 struct iwl_mvm_sta *mvmsta; 211 struct iwl_mvm_tcm_mac *mdata; 212 int mac; 213 int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */ 214 struct iwl_mvm_vif *mvmvif; 215 /* expected throughput in 100Kbps, single stream, 20 MHz */ 216 static const u8 thresh_tpt[] = { 217 9, 18, 30, 42, 60, 78, 90, 96, 120, 135, 218 }; 219 u16 thr; 220 221 if (ieee80211_is_data_qos(hdr->frame_control)) { 222 u8 tid = ieee80211_get_tid(hdr); 223 224 if (tid < IWL_MAX_TID_COUNT) 225 ac = tid_to_mac80211_ac[tid]; 226 } 227 228 mvmsta = iwl_mvm_sta_from_mac80211(sta); 229 mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK; 230 231 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) 232 schedule_delayed_work(&mvm->tcm.work, 0); 233 mdata = &mvm->tcm.data[mac]; 234 mdata->rx.pkts[ac]++; 235 236 /* count the airtime only once for each ampdu */ 237 if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) { 238 mdata->rx.last_ampdu_ref = mvm->ampdu_ref; 239 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time); 240 } 241 242 if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1))) 243 return; 244 245 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 246 247 if (mdata->opened_rx_ba_sessions || 248 mdata->uapsd_nonagg_detect.detected || 249 (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 250 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 251 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 252 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) || 253 mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id) 254 return; 255 256 if (rate_n_flags & RATE_MCS_HT_MSK_V1) { 257 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1]; 258 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >> 259 RATE_HT_MCS_NSS_POS_V1); 260 } else { 261 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >= 262 ARRAY_SIZE(thresh_tpt))) 263 return; 264 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK]; 265 thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags); 266 } 267 268 thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >> 269 RATE_MCS_CHAN_WIDTH_POS); 270 271 mdata->uapsd_nonagg_detect.rx_bytes += len; 272 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr); 273 } 274 275 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, 276 struct sk_buff *skb, 277 u32 status) 278 { 279 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 280 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 281 282 if (mvmvif->features & NETIF_F_RXCSUM && 283 status & RX_MPDU_RES_STATUS_CSUM_DONE && 284 status & RX_MPDU_RES_STATUS_CSUM_OK) 285 skb->ip_summed = CHECKSUM_UNNECESSARY; 286 } 287 288 /* 289 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler 290 * 291 * Handles the actual data of the Rx packet from the fw 292 */ 293 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, 294 struct iwl_rx_cmd_buffer *rxb) 295 { 296 struct ieee80211_hdr *hdr; 297 struct ieee80211_rx_status *rx_status; 298 struct iwl_rx_packet *pkt = rxb_addr(rxb); 299 struct iwl_rx_phy_info *phy_info; 300 struct iwl_rx_mpdu_res_start *rx_res; 301 struct ieee80211_sta *sta = NULL; 302 struct sk_buff *skb; 303 u32 len, pkt_len = iwl_rx_packet_payload_len(pkt); 304 u32 rate_n_flags; 305 u32 rx_pkt_status; 306 u8 crypt_len = 0; 307 308 if (unlikely(pkt_len < sizeof(*rx_res))) { 309 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n"); 310 return; 311 } 312 313 phy_info = &mvm->last_phy_info; 314 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; 315 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); 316 len = le16_to_cpu(rx_res->byte_count); 317 318 if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) { 319 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n"); 320 return; 321 } 322 323 rx_pkt_status = get_unaligned_le32((__le32 *) 324 (pkt->data + sizeof(*rx_res) + len)); 325 326 /* Dont use dev_alloc_skb(), we'll have enough headroom once 327 * ieee80211_hdr pulled. 328 */ 329 skb = alloc_skb(128, GFP_ATOMIC); 330 if (!skb) { 331 IWL_ERR(mvm, "alloc_skb failed\n"); 332 return; 333 } 334 335 rx_status = IEEE80211_SKB_RXCB(skb); 336 337 /* 338 * Keep packets with CRC errors (and with overrun) for monitor mode 339 * (otherwise the firmware discards them) but mark them as bad. 340 */ 341 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || 342 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { 343 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); 344 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; 345 } 346 347 /* This will be used in several places later */ 348 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); 349 350 /* rx_status carries information about the packet to mac80211 */ 351 rx_status->mactime = le64_to_cpu(phy_info->timestamp); 352 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); 353 rx_status->band = 354 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 355 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 356 rx_status->freq = 357 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), 358 rx_status->band); 359 360 /* TSF as indicated by the firmware is at INA time */ 361 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; 362 363 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); 364 365 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, 366 (unsigned long long)rx_status->mactime); 367 368 rcu_read_lock(); 369 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { 370 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; 371 372 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; 373 374 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) { 375 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); 376 if (IS_ERR(sta)) 377 sta = NULL; 378 } 379 } else if (!is_multicast_ether_addr(hdr->addr2)) { 380 /* This is fine since we prevent two stations with the same 381 * address from being added. 382 */ 383 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); 384 } 385 386 if (sta) { 387 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 388 struct ieee80211_vif *vif = mvmsta->vif; 389 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 390 391 /* 392 * Don't even try to decrypt a MCAST frame that was received 393 * before the managed vif is authorized, we'd fail anyway. 394 */ 395 if (is_multicast_ether_addr(hdr->addr1) && 396 vif->type == NL80211_IFTYPE_STATION && 397 !mvmvif->authorized && 398 ieee80211_has_protected(hdr->frame_control)) { 399 IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n"); 400 kfree_skb(skb); 401 rcu_read_unlock(); 402 return; 403 } 404 } 405 406 /* 407 * drop the packet if it has failed being decrypted by HW 408 */ 409 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, 410 &crypt_len)) { 411 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", 412 rx_pkt_status); 413 kfree_skb(skb); 414 rcu_read_unlock(); 415 return; 416 } 417 418 if (sta) { 419 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 420 struct ieee80211_vif *tx_blocked_vif = 421 rcu_dereference(mvm->csa_tx_blocked_vif); 422 struct iwl_fw_dbg_trigger_tlv *trig; 423 struct ieee80211_vif *vif = mvmsta->vif; 424 425 /* We have tx blocked stations (with CS bit). If we heard 426 * frames from a blocked station on a new channel we can 427 * TX to it again. 428 */ 429 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) { 430 struct iwl_mvm_vif *mvmvif = 431 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 432 433 if (mvmvif->csa_target_freq == rx_status->freq) 434 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, 435 false); 436 } 437 438 rs_update_last_rssi(mvm, mvmsta, rx_status); 439 440 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, 441 ieee80211_vif_to_wdev(vif), 442 FW_DBG_TRIGGER_RSSI); 443 444 if (trig && ieee80211_is_beacon(hdr->frame_control)) { 445 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; 446 s32 rssi; 447 448 rssi_trig = (void *)trig->data; 449 rssi = le32_to_cpu(rssi_trig->rssi); 450 451 if (rx_status->signal < rssi) 452 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 453 #if defined(__linux__) 454 NULL); 455 #elif defined(__FreeBSD__) 456 ""); 457 #endif 458 } 459 460 if (!mvm->tcm.paused && len >= sizeof(*hdr) && 461 !is_multicast_ether_addr(hdr->addr1) && 462 ieee80211_is_data(hdr->frame_control)) 463 iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info, 464 rate_n_flags); 465 466 if (ieee80211_is_data(hdr->frame_control)) 467 iwl_mvm_rx_csum(sta, skb, rx_pkt_status); 468 } 469 rcu_read_unlock(); 470 471 /* set the preamble flag if appropriate */ 472 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) 473 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 474 475 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 476 /* 477 * We know which subframes of an A-MPDU belong 478 * together since we get a single PHY response 479 * from the firmware for all of them 480 */ 481 rx_status->flag |= RX_FLAG_AMPDU_DETAILS; 482 rx_status->ampdu_reference = mvm->ampdu_ref; 483 } 484 485 /* Set up the HT phy flags */ 486 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) { 487 case RATE_MCS_CHAN_WIDTH_20: 488 break; 489 case RATE_MCS_CHAN_WIDTH_40: 490 rx_status->bw = RATE_INFO_BW_40; 491 break; 492 case RATE_MCS_CHAN_WIDTH_80: 493 rx_status->bw = RATE_INFO_BW_80; 494 break; 495 case RATE_MCS_CHAN_WIDTH_160: 496 rx_status->bw = RATE_INFO_BW_160; 497 break; 498 } 499 if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) && 500 rate_n_flags & RATE_MCS_SGI_MSK_V1) 501 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 502 if (rate_n_flags & RATE_MCS_LDPC_MSK_V1) 503 rx_status->enc_flags |= RX_ENC_FLAG_LDPC; 504 if (rate_n_flags & RATE_MCS_HT_MSK_V1) { 505 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> 506 RATE_MCS_STBC_POS; 507 rx_status->encoding = RX_ENC_HT; 508 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1; 509 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; 510 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) { 511 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> 512 RATE_MCS_STBC_POS; 513 rx_status->nss = 514 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1; 515 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 516 rx_status->encoding = RX_ENC_VHT; 517 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; 518 if (rate_n_flags & RATE_MCS_BF_MSK) 519 rx_status->enc_flags |= RX_ENC_FLAG_BF; 520 } else { 521 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 522 rx_status->band); 523 524 if (WARN(rate < 0 || rate > 0xFF, 525 "Invalid rate flags 0x%x, band %d,\n", 526 rate_n_flags, rx_status->band)) { 527 kfree_skb(skb); 528 return; 529 } 530 rx_status->rate_idx = rate; 531 } 532 533 #ifdef CONFIG_IWLWIFI_DEBUGFS 534 iwl_mvm_update_frame_stats(mvm, rate_n_flags, 535 rx_status->flag & RX_FLAG_AMPDU_DETAILS); 536 #endif 537 538 if (unlikely((ieee80211_is_beacon(hdr->frame_control) || 539 ieee80211_is_probe_resp(hdr->frame_control)) && 540 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) 541 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; 542 543 if (unlikely(ieee80211_is_beacon(hdr->frame_control) || 544 ieee80211_is_probe_resp(hdr->frame_control))) 545 rx_status->boottime_ns = ktime_get_boottime_ns(); 546 547 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, 548 crypt_len, rxb); 549 } 550 551 struct iwl_mvm_stat_data { 552 struct iwl_mvm *mvm; 553 __le32 flags; 554 __le32 mac_id; 555 u8 beacon_filter_average_energy; 556 __le32 *beacon_counter; 557 u8 *beacon_average_energy; 558 }; 559 560 struct iwl_mvm_stat_data_all_macs { 561 struct iwl_mvm *mvm; 562 __le32 flags; 563 struct iwl_stats_ntfy_per_mac *per_mac; 564 }; 565 566 static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig, 567 struct iwl_mvm_vif_link_info *link_info, 568 struct ieee80211_bss_conf *bss_conf) 569 { 570 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 571 struct iwl_mvm *mvm = mvmvif->mvm; 572 int thold = bss_conf->cqm_rssi_thold; 573 int hyst = bss_conf->cqm_rssi_hyst; 574 int last_event; 575 s8 exit_esr_thresh; 576 577 if (sig == 0) { 578 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); 579 return; 580 } 581 582 link_info->bf_data.ave_beacon_signal = sig; 583 584 /* BT Coex */ 585 if (link_info->bf_data.bt_coex_min_thold != 586 link_info->bf_data.bt_coex_max_thold) { 587 last_event = link_info->bf_data.last_bt_coex_event; 588 if (sig > link_info->bf_data.bt_coex_max_thold && 589 (last_event <= link_info->bf_data.bt_coex_min_thold || 590 last_event == 0)) { 591 link_info->bf_data.last_bt_coex_event = sig; 592 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", 593 sig); 594 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); 595 } else if (sig < link_info->bf_data.bt_coex_min_thold && 596 (last_event >= link_info->bf_data.bt_coex_max_thold || 597 last_event == 0)) { 598 link_info->bf_data.last_bt_coex_event = sig; 599 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", 600 sig); 601 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); 602 } 603 } 604 605 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 606 return; 607 608 /* CQM Notification */ 609 last_event = link_info->bf_data.last_cqm_event; 610 if (thold && sig < thold && (last_event == 0 || 611 sig < last_event - hyst)) { 612 link_info->bf_data.last_cqm_event = sig; 613 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", 614 sig); 615 ieee80211_cqm_rssi_notify( 616 vif, 617 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 618 sig, 619 GFP_KERNEL); 620 } else if (sig > thold && 621 (last_event == 0 || sig > last_event + hyst)) { 622 link_info->bf_data.last_cqm_event = sig; 623 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", 624 sig); 625 ieee80211_cqm_rssi_notify( 626 vif, 627 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 628 sig, 629 GFP_KERNEL); 630 } 631 632 /* ESR recalculation */ 633 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 634 return; 635 636 /* We're not in EMLSR and our signal is bad, try to switch link maybe */ 637 if (sig < IWL_MVM_LOW_RSSI_MLO_SCAN_THRESH && !mvmvif->esr_active) { 638 iwl_mvm_int_mlo_scan(mvm, vif); 639 return; 640 } 641 642 /* We are in EMLSR, check if we need to exit */ 643 exit_esr_thresh = 644 iwl_mvm_get_esr_rssi_thresh(mvm, 645 &bss_conf->chanreq.oper, 646 true); 647 648 if (sig < exit_esr_thresh) 649 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_LOW_RSSI, 650 iwl_mvm_get_other_link(vif, 651 bss_conf->link_id)); 652 } 653 654 static void iwl_mvm_stat_iterator(void *_data, u8 *mac, 655 struct ieee80211_vif *vif) 656 { 657 struct iwl_mvm_stat_data *data = _data; 658 int sig = -data->beacon_filter_average_energy; 659 u16 id = le32_to_cpu(data->mac_id); 660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 661 u16 vif_id = mvmvif->id; 662 663 /* This doesn't need the MAC ID check since it's not taking the 664 * data copied into the "data" struct, but rather the data from 665 * the notification directly. 666 */ 667 mvmvif->deflink.beacon_stats.num_beacons = 668 le32_to_cpu(data->beacon_counter[vif_id]); 669 mvmvif->deflink.beacon_stats.avg_signal = 670 -data->beacon_average_energy[vif_id]; 671 672 if (mvmvif->id != id) 673 return; 674 675 if (vif->type != NL80211_IFTYPE_STATION) 676 return; 677 678 /* make sure that beacon statistics don't go backwards with TCM 679 * request to clear statistics 680 */ 681 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 682 mvmvif->deflink.beacon_stats.accu_num_beacons += 683 mvmvif->deflink.beacon_stats.num_beacons; 684 685 /* This is used in pre-MLO API so use deflink */ 686 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf); 687 } 688 689 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac, 690 struct ieee80211_vif *vif) 691 { 692 struct iwl_mvm_stat_data_all_macs *data = _data; 693 struct iwl_stats_ntfy_per_mac *mac_stats; 694 int sig; 695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 696 u16 vif_id = mvmvif->id; 697 698 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id)) 699 return; 700 701 if (vif->type != NL80211_IFTYPE_STATION) 702 return; 703 704 mac_stats = &data->per_mac[vif_id]; 705 706 mvmvif->deflink.beacon_stats.num_beacons = 707 le32_to_cpu(mac_stats->beacon_counter); 708 mvmvif->deflink.beacon_stats.avg_signal = 709 -le32_to_cpu(mac_stats->beacon_average_energy); 710 711 /* make sure that beacon statistics don't go backwards with TCM 712 * request to clear statistics 713 */ 714 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 715 mvmvif->deflink.beacon_stats.accu_num_beacons += 716 mvmvif->deflink.beacon_stats.num_beacons; 717 718 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy); 719 720 /* This is used in pre-MLO API so use deflink */ 721 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf); 722 } 723 724 static inline void 725 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) 726 { 727 struct iwl_fw_dbg_trigger_tlv *trig; 728 struct iwl_fw_dbg_trigger_stats *trig_stats; 729 u32 trig_offset, trig_thold; 730 731 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS); 732 if (!trig) 733 return; 734 735 trig_stats = (void *)trig->data; 736 737 trig_offset = le32_to_cpu(trig_stats->stop_offset); 738 trig_thold = le32_to_cpu(trig_stats->stop_threshold); 739 740 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) 741 return; 742 743 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) 744 return; 745 746 #if defined(__linux__) 747 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); 748 #elif defined(__FreeBSD__) 749 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, ""); 750 #endif 751 } 752 753 static void iwl_mvm_stats_energy_iter(void *_data, 754 struct ieee80211_sta *sta) 755 { 756 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 757 u8 *energy = _data; 758 u32 sta_id = mvmsta->deflink.sta_id; 759 760 if (WARN_ONCE(sta_id >= IWL_STATION_COUNT_MAX, "sta_id %d >= %d", 761 sta_id, IWL_STATION_COUNT_MAX)) 762 return; 763 764 if (energy[sta_id]) 765 mvmsta->deflink.avg_energy = energy[sta_id]; 766 767 } 768 769 static void 770 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le, 771 __le32 *rx_bytes_le) 772 { 773 int i; 774 775 spin_lock(&mvm->tcm.lock); 776 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) { 777 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i]; 778 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]); 779 u32 airtime = le32_to_cpu(air_time_le[i]); 780 781 mdata->rx.airtime += airtime; 782 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes; 783 if (airtime) { 784 /* re-init every time to store rate from FW */ 785 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 786 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, 787 rx_bytes * 8 / airtime); 788 } 789 } 790 spin_unlock(&mvm->tcm.lock); 791 } 792 793 static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm, 794 struct iwl_stats_ntfy_per_phy *per_phy) 795 { 796 int i; 797 798 for (i = 0; i < NUM_PHY_CTX; i++) { 799 if (!mvm->phy_ctxts[i].ref) 800 continue; 801 mvm->phy_ctxts[i].channel_load_by_us = 802 le32_to_cpu(per_phy[i].channel_load_by_us); 803 mvm->phy_ctxts[i].channel_load_not_by_us = 804 le32_to_cpu(per_phy[i].channel_load_not_by_us); 805 } 806 } 807 808 static void 809 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm, 810 struct iwl_statistics_operational_ntfy *stats) 811 { 812 struct iwl_mvm_stat_data_all_macs data = { 813 .mvm = mvm, 814 .flags = stats->flags, 815 .per_mac = stats->per_mac, 816 }; 817 818 ieee80211_iterate_active_interfaces(mvm->hw, 819 IEEE80211_IFACE_ITER_NORMAL, 820 iwl_mvm_stat_iterator_all_macs, 821 &data); 822 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy); 823 } 824 825 static void 826 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm, 827 struct iwl_statistics_operational_ntfy_ver_14 *stats) 828 { 829 struct iwl_mvm_stat_data data = { 830 .mvm = mvm, 831 }; 832 833 u8 beacon_average_energy[MAC_INDEX_AUX]; 834 __le32 flags; 835 int i; 836 837 flags = stats->flags; 838 839 data.mac_id = stats->mac_id; 840 data.beacon_filter_average_energy = 841 le32_to_cpu(stats->beacon_filter_average_energy); 842 data.flags = flags; 843 data.beacon_counter = stats->beacon_counter; 844 845 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++) 846 beacon_average_energy[i] = 847 le32_to_cpu(stats->beacon_average_energy[i]); 848 849 data.beacon_average_energy = beacon_average_energy; 850 851 ieee80211_iterate_active_interfaces(mvm->hw, 852 IEEE80211_IFACE_ITER_NORMAL, 853 iwl_mvm_stat_iterator, 854 &data); 855 } 856 857 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm, 858 struct iwl_rx_packet *pkt, 859 u32 expected_size) 860 { 861 struct iwl_statistics_ntfy_hdr *hdr; 862 863 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size, 864 "received invalid statistics size (%d)!, expected_size: %d\n", 865 iwl_rx_packet_payload_len(pkt), expected_size)) 866 return false; 867 868 hdr = (void *)&pkt->data; 869 870 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL || 871 hdr->version != 872 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0), 873 "received unsupported hdr type %d, version %d\n", 874 hdr->type, hdr->version)) 875 return false; 876 877 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size, 878 "received invalid statistics size in header (%d)!, expected_size: %d\n", 879 le16_to_cpu(hdr->size), expected_size)) 880 return false; 881 882 return true; 883 } 884 885 static void 886 iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm, 887 struct iwl_stats_ntfy_per_link *per_link) 888 { 889 u32 air_time[MAC_INDEX_AUX] = {}; 890 u32 rx_bytes[MAC_INDEX_AUX] = {}; 891 int fw_link_id; 892 893 /* driver uses link ID == MAC ID */ 894 for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->vif_id_to_mac); 895 fw_link_id++) { 896 struct iwl_stats_ntfy_per_link *link_stats; 897 struct iwl_mvm_vif_link_info *link_info; 898 struct iwl_mvm_vif *mvmvif; 899 struct ieee80211_vif *vif; 900 int link_id; 901 int sig; 902 903 vif = iwl_mvm_rcu_dereference_vif_id(mvm, fw_link_id, false); 904 if (!vif) 905 continue; 906 907 if (vif->type != NL80211_IFTYPE_STATION) 908 continue; 909 910 link_id = vif->bss_conf.link_id; 911 if (link_id >= ARRAY_SIZE(mvmvif->link)) 912 continue; 913 914 mvmvif = iwl_mvm_vif_from_mac80211(vif); 915 link_info = mvmvif->link[link_id]; 916 if (!link_info) 917 continue; 918 919 link_stats = &per_link[fw_link_id]; 920 921 link_info->beacon_stats.num_beacons = 922 le32_to_cpu(link_stats->beacon_counter); 923 924 /* we basically just use the u8 to store 8 bits and then treat 925 * it as a s8 whenever we take it out to a different type. 926 */ 927 link_info->beacon_stats.avg_signal = 928 -le32_to_cpu(link_stats->beacon_average_energy); 929 930 if (link_info->phy_ctxt && 931 link_info->phy_ctxt->channel->band == NL80211_BAND_2GHZ) 932 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id); 933 934 /* make sure that beacon statistics don't go backwards with TCM 935 * request to clear statistics 936 */ 937 if (mvm->statistics_clear) 938 mvmvif->link[link_id]->beacon_stats.accu_num_beacons += 939 mvmvif->link[link_id]->beacon_stats.num_beacons; 940 941 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy); 942 iwl_mvm_update_link_sig(vif, sig, link_info, &vif->bss_conf); 943 944 if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX, 945 "invalid mvmvif id: %d", mvmvif->id)) 946 continue; 947 948 air_time[mvmvif->id] += 949 le32_to_cpu(per_link[fw_link_id].air_time); 950 rx_bytes[mvmvif->id] += 951 le32_to_cpu(per_link[fw_link_id].rx_bytes); 952 } 953 954 /* Don't update in case the statistics are not cleared, since 955 * we will end up counting twice the same airtime, once in TCM 956 * request and once in statistics notification. 957 */ 958 if (mvm->statistics_clear) { 959 __le32 air_time_le[MAC_INDEX_AUX]; 960 __le32 rx_bytes_le[MAC_INDEX_AUX]; 961 int vif_id; 962 963 for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) { 964 air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]); 965 rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]); 966 } 967 968 iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le); 969 } 970 } 971 972 #define SEC_LINK_MIN_PERC 10 973 #define SEC_LINK_MIN_TX 3000 974 #define SEC_LINK_MIN_RX 400 975 976 /* Accept a ~20% short window to avoid issues due to jitter */ 977 #define IWL_MVM_TPT_MIN_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ * 4 / 5) 978 979 static void iwl_mvm_update_esr_mode_tpt(struct iwl_mvm *mvm) 980 { 981 struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm); 982 struct iwl_mvm_vif *mvmvif; 983 struct iwl_mvm_sta *mvmsta; 984 unsigned long total_tx = 0, total_rx = 0; 985 unsigned long sec_link_tx = 0, sec_link_rx = 0; 986 u8 sec_link_tx_perc, sec_link_rx_perc; 987 u8 sec_link; 988 bool skip = false; 989 990 lockdep_assert_held(&mvm->mutex); 991 992 if (IS_ERR_OR_NULL(bss_vif)) 993 return; 994 995 mvmvif = iwl_mvm_vif_from_mac80211(bss_vif); 996 997 if (!mvmvif->esr_active || !mvmvif->ap_sta) 998 return; 999 1000 mvmsta = iwl_mvm_sta_from_mac80211(mvmvif->ap_sta); 1001 /* We only count for the AP sta in a MLO connection */ 1002 if (!mvmsta->mpdu_counters) 1003 return; 1004 1005 /* Get the FW ID of the secondary link */ 1006 sec_link = iwl_mvm_get_other_link(bss_vif, 1007 iwl_mvm_get_primary_link(bss_vif)); 1008 if (WARN_ON(!mvmvif->link[sec_link])) 1009 return; 1010 sec_link = mvmvif->link[sec_link]->fw_link_id; 1011 1012 /* Sum up RX and TX MPDUs from the different queues/links */ 1013 for (int q = 0; q < mvm->trans->info.num_rxqs; q++) { 1014 spin_lock_bh(&mvmsta->mpdu_counters[q].lock); 1015 1016 /* The link IDs that doesn't exist will contain 0 */ 1017 for (int link = 0; link < IWL_FW_MAX_LINK_ID; link++) { 1018 total_tx += mvmsta->mpdu_counters[q].per_link[link].tx; 1019 total_rx += mvmsta->mpdu_counters[q].per_link[link].rx; 1020 } 1021 1022 sec_link_tx += mvmsta->mpdu_counters[q].per_link[sec_link].tx; 1023 sec_link_rx += mvmsta->mpdu_counters[q].per_link[sec_link].rx; 1024 1025 /* 1026 * In EMLSR we have statistics every 5 seconds, so we can reset 1027 * the counters upon every statistics notification. 1028 * The FW sends the notification regularly, but it will be 1029 * misaligned at the start. Skipping the measurement if it is 1030 * short will synchronize us. 1031 */ 1032 if (jiffies - mvmsta->mpdu_counters[q].window_start < 1033 IWL_MVM_TPT_MIN_COUNT_WINDOW) 1034 skip = true; 1035 mvmsta->mpdu_counters[q].window_start = jiffies; 1036 memset(mvmsta->mpdu_counters[q].per_link, 0, 1037 sizeof(mvmsta->mpdu_counters[q].per_link)); 1038 1039 spin_unlock_bh(&mvmsta->mpdu_counters[q].lock); 1040 } 1041 1042 if (skip) { 1043 IWL_DEBUG_INFO(mvm, "MPDU statistics window was short\n"); 1044 return; 1045 } 1046 1047 IWL_DEBUG_INFO(mvm, "total Tx MPDUs: %ld. total Rx MPDUs: %ld\n", 1048 total_tx, total_rx); 1049 1050 /* If we don't have enough MPDUs - exit EMLSR */ 1051 if (total_tx < IWL_MVM_ENTER_ESR_TPT_THRESH && 1052 total_rx < IWL_MVM_ENTER_ESR_TPT_THRESH) { 1053 iwl_mvm_block_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_TPT, 1054 iwl_mvm_get_primary_link(bss_vif)); 1055 return; 1056 } 1057 1058 IWL_DEBUG_INFO(mvm, "Secondary Link %d: Tx MPDUs: %ld. Rx MPDUs: %ld\n", 1059 sec_link, sec_link_tx, sec_link_rx); 1060 1061 /* Calculate the percentage of the secondary link TX/RX */ 1062 sec_link_tx_perc = total_tx ? sec_link_tx * 100 / total_tx : 0; 1063 sec_link_rx_perc = total_rx ? sec_link_rx * 100 / total_rx : 0; 1064 1065 /* 1066 * The TX/RX percentage is checked only if it exceeds the required 1067 * minimum. In addition, RX is checked only if the TX check failed. 1068 */ 1069 if ((total_tx > SEC_LINK_MIN_TX && 1070 sec_link_tx_perc < SEC_LINK_MIN_PERC) || 1071 (total_rx > SEC_LINK_MIN_RX && 1072 sec_link_rx_perc < SEC_LINK_MIN_PERC)) 1073 iwl_mvm_exit_esr(mvm, bss_vif, IWL_MVM_ESR_EXIT_LINK_USAGE, 1074 iwl_mvm_get_primary_link(bss_vif)); 1075 } 1076 1077 void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm, 1078 struct iwl_rx_cmd_buffer *rxb) 1079 { 1080 u8 average_energy[IWL_STATION_COUNT_MAX]; 1081 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1082 struct iwl_system_statistics_notif_oper *stats; 1083 int i; 1084 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP, 1085 STATISTICS_OPER_NOTIF, 0); 1086 1087 if (notif_ver != 3) { 1088 IWL_FW_CHECK_FAILED(mvm, 1089 "Oper stats notif ver %d is not supported\n", 1090 notif_ver); 1091 return; 1092 } 1093 1094 stats = (void *)&pkt->data; 1095 iwl_mvm_stat_iterator_all_links(mvm, stats->per_link); 1096 1097 for (i = 0; i < ARRAY_SIZE(average_energy); i++) 1098 average_energy[i] = 1099 le32_to_cpu(stats->per_sta[i].average_energy); 1100 1101 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1102 average_energy); 1103 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy); 1104 1105 iwl_mvm_update_esr_mode_tpt(mvm); 1106 } 1107 1108 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm, 1109 struct iwl_rx_cmd_buffer *rxb) 1110 { 1111 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1112 struct iwl_system_statistics_part1_notif_oper *part1_stats; 1113 int i; 1114 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP, 1115 STATISTICS_OPER_PART1_NOTIF, 0); 1116 1117 if (notif_ver != 4) { 1118 IWL_FW_CHECK_FAILED(mvm, 1119 "Part1 stats notif ver %d is not supported\n", 1120 notif_ver); 1121 return; 1122 } 1123 1124 part1_stats = (void *)&pkt->data; 1125 mvm->radio_stats.rx_time = 0; 1126 mvm->radio_stats.tx_time = 0; 1127 for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) { 1128 mvm->radio_stats.rx_time += 1129 le64_to_cpu(part1_stats->per_link[i].rx_time); 1130 mvm->radio_stats.tx_time += 1131 le64_to_cpu(part1_stats->per_link[i].tx_time); 1132 } 1133 } 1134 1135 static void 1136 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm, 1137 struct iwl_rx_packet *pkt) 1138 { 1139 u8 average_energy[IWL_STATION_COUNT_MAX]; 1140 __le32 air_time[MAC_INDEX_AUX]; 1141 __le32 rx_bytes[MAC_INDEX_AUX]; 1142 __le32 flags = 0; 1143 int i; 1144 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1145 STATISTICS_NOTIFICATION, 0); 1146 1147 if (WARN_ONCE(notif_ver > 15, 1148 "invalid statistics version id: %d\n", notif_ver)) 1149 return; 1150 1151 if (notif_ver == 14) { 1152 struct iwl_statistics_operational_ntfy_ver_14 *stats = 1153 (void *)pkt->data; 1154 1155 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats))) 1156 return; 1157 1158 iwl_mvm_stats_ver_14(mvm, stats); 1159 1160 flags = stats->flags; 1161 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time); 1162 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time); 1163 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf); 1164 mvm->radio_stats.on_time_scan = 1165 le64_to_cpu(stats->on_time_scan); 1166 1167 for (i = 0; i < ARRAY_SIZE(average_energy); i++) 1168 average_energy[i] = le32_to_cpu(stats->average_energy[i]); 1169 1170 for (i = 0; i < ARRAY_SIZE(air_time); i++) { 1171 air_time[i] = stats->air_time[i]; 1172 rx_bytes[i] = stats->rx_bytes[i]; 1173 } 1174 } 1175 1176 if (notif_ver == 15) { 1177 struct iwl_statistics_operational_ntfy *stats = 1178 (void *)pkt->data; 1179 1180 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats))) 1181 return; 1182 1183 iwl_mvm_stats_ver_15(mvm, stats); 1184 1185 flags = stats->flags; 1186 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time); 1187 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time); 1188 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf); 1189 mvm->radio_stats.on_time_scan = 1190 le64_to_cpu(stats->on_time_scan); 1191 1192 for (i = 0; i < ARRAY_SIZE(average_energy); i++) 1193 average_energy[i] = 1194 le32_to_cpu(stats->per_sta[i].average_energy); 1195 1196 for (i = 0; i < ARRAY_SIZE(air_time); i++) { 1197 air_time[i] = stats->per_mac[i].air_time; 1198 rx_bytes[i] = stats->per_mac[i].rx_bytes; 1199 } 1200 } 1201 1202 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 1203 1204 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1205 average_energy); 1206 /* 1207 * Don't update in case the statistics are not cleared, since 1208 * we will end up counting twice the same airtime, once in TCM 1209 * request and once in statistics notification. 1210 */ 1211 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 1212 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes); 1213 } 1214 1215 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, 1216 struct iwl_rx_packet *pkt) 1217 { 1218 struct iwl_mvm_stat_data data = { 1219 .mvm = mvm, 1220 }; 1221 __le32 *bytes, *air_time, flags; 1222 int expected_size; 1223 u8 *energy; 1224 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1225 WIDE_ID(SYSTEM_GROUP, 1226 SYSTEM_STATISTICS_CMD), 1227 IWL_FW_CMD_VER_UNKNOWN); 1228 1229 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN) 1230 return; 1231 1232 /* From ver 14 and up we use TLV statistics format */ 1233 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1234 STATISTICS_NOTIFICATION, 0) >= 14) 1235 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt); 1236 1237 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1238 if (iwl_mvm_has_new_rx_api(mvm)) 1239 expected_size = sizeof(struct iwl_notif_statistics_v11); 1240 else 1241 expected_size = sizeof(struct iwl_notif_statistics_v10); 1242 } else { 1243 expected_size = sizeof(struct iwl_notif_statistics); 1244 } 1245 1246 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size, 1247 "received invalid statistics size (%d)!\n", 1248 iwl_rx_packet_payload_len(pkt))) 1249 return; 1250 1251 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1252 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data; 1253 1254 data.mac_id = stats->rx.general.mac_id; 1255 data.beacon_filter_average_energy = 1256 stats->general.common.beacon_filter_average_energy; 1257 1258 mvm->rx_stats_v3 = stats->rx; 1259 1260 mvm->radio_stats.rx_time = 1261 le64_to_cpu(stats->general.common.rx_time); 1262 mvm->radio_stats.tx_time = 1263 le64_to_cpu(stats->general.common.tx_time); 1264 mvm->radio_stats.on_time_rf = 1265 le64_to_cpu(stats->general.common.on_time_rf); 1266 mvm->radio_stats.on_time_scan = 1267 le64_to_cpu(stats->general.common.on_time_scan); 1268 1269 data.beacon_counter = stats->general.beacon_counter; 1270 data.beacon_average_energy = 1271 stats->general.beacon_average_energy; 1272 flags = stats->flag; 1273 } else { 1274 struct iwl_notif_statistics *stats = (void *)&pkt->data; 1275 1276 data.mac_id = stats->rx.general.mac_id; 1277 data.beacon_filter_average_energy = 1278 stats->general.common.beacon_filter_average_energy; 1279 1280 mvm->rx_stats = stats->rx; 1281 1282 mvm->radio_stats.rx_time = 1283 le64_to_cpu(stats->general.common.rx_time); 1284 mvm->radio_stats.tx_time = 1285 le64_to_cpu(stats->general.common.tx_time); 1286 mvm->radio_stats.on_time_rf = 1287 le64_to_cpu(stats->general.common.on_time_rf); 1288 mvm->radio_stats.on_time_scan = 1289 le64_to_cpu(stats->general.common.on_time_scan); 1290 1291 data.beacon_counter = stats->general.beacon_counter; 1292 data.beacon_average_energy = 1293 stats->general.beacon_average_energy; 1294 flags = stats->flag; 1295 } 1296 data.flags = flags; 1297 1298 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 1299 1300 ieee80211_iterate_active_interfaces(mvm->hw, 1301 IEEE80211_IFACE_ITER_NORMAL, 1302 iwl_mvm_stat_iterator, 1303 &data); 1304 1305 if (!iwl_mvm_has_new_rx_api(mvm)) 1306 return; 1307 1308 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1309 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data; 1310 1311 energy = (void *)&v11->load_stats.avg_energy; 1312 bytes = (void *)&v11->load_stats.byte_count; 1313 air_time = (void *)&v11->load_stats.air_time; 1314 } else { 1315 struct iwl_notif_statistics *stats = (void *)&pkt->data; 1316 1317 energy = (void *)&stats->load_stats.avg_energy; 1318 bytes = (void *)&stats->load_stats.byte_count; 1319 air_time = (void *)&stats->load_stats.air_time; 1320 } 1321 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1322 energy); 1323 1324 /* 1325 * Don't update in case the statistics are not cleared, since 1326 * we will end up counting twice the same airtime, once in TCM 1327 * request and once in statistics notification. 1328 */ 1329 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 1330 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes); 1331 1332 } 1333 1334 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1335 { 1336 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); 1337 } 1338 1339 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, 1340 struct iwl_rx_cmd_buffer *rxb) 1341 { 1342 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1343 struct iwl_ba_window_status_notif *notif = (void *)pkt->data; 1344 int i; 1345 1346 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX); 1347 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX); 1348 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX); 1349 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX); 1350 1351 rcu_read_lock(); 1352 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { 1353 struct ieee80211_sta *sta; 1354 u8 sta_id, tid; 1355 u64 bitmap; 1356 u32 ssn; 1357 u16 ratid; 1358 u16 received_mpdu; 1359 1360 ratid = le16_to_cpu(notif->ra_tid[i]); 1361 /* check that this TID is valid */ 1362 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) 1363 continue; 1364 1365 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); 1366 if (received_mpdu == 0) 1367 continue; 1368 1369 tid = ratid & BA_WINDOW_STATUS_TID_MSK; 1370 /* get the station */ 1371 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) 1372 >> BA_WINDOW_STATUS_STA_ID_POS; 1373 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1374 if (IS_ERR_OR_NULL(sta)) 1375 continue; 1376 bitmap = le64_to_cpu(notif->bitmap[i]); 1377 ssn = le32_to_cpu(notif->start_seq_num[i]); 1378 1379 /* update mac80211 with the bitmap for the reordering buffer */ 1380 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, 1381 received_mpdu); 1382 } 1383 rcu_read_unlock(); 1384 } 1385