1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <asm/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_HT_MCS_GF_MSK) 503 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; 504 if (rate_n_flags & RATE_MCS_LDPC_MSK_V1) 505 rx_status->enc_flags |= RX_ENC_FLAG_LDPC; 506 if (rate_n_flags & RATE_MCS_HT_MSK_V1) { 507 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> 508 RATE_MCS_STBC_POS; 509 rx_status->encoding = RX_ENC_HT; 510 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1; 511 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; 512 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) { 513 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> 514 RATE_MCS_STBC_POS; 515 rx_status->nss = 516 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1; 517 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 518 rx_status->encoding = RX_ENC_VHT; 519 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; 520 if (rate_n_flags & RATE_MCS_BF_MSK) 521 rx_status->enc_flags |= RX_ENC_FLAG_BF; 522 } else { 523 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 524 rx_status->band); 525 526 if (WARN(rate < 0 || rate > 0xFF, 527 "Invalid rate flags 0x%x, band %d,\n", 528 rate_n_flags, rx_status->band)) { 529 kfree_skb(skb); 530 return; 531 } 532 rx_status->rate_idx = rate; 533 } 534 535 #ifdef CONFIG_IWLWIFI_DEBUGFS 536 iwl_mvm_update_frame_stats(mvm, rate_n_flags, 537 rx_status->flag & RX_FLAG_AMPDU_DETAILS); 538 #endif 539 540 if (unlikely((ieee80211_is_beacon(hdr->frame_control) || 541 ieee80211_is_probe_resp(hdr->frame_control)) && 542 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) 543 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; 544 545 if (unlikely(ieee80211_is_beacon(hdr->frame_control) || 546 ieee80211_is_probe_resp(hdr->frame_control))) 547 rx_status->boottime_ns = ktime_get_boottime_ns(); 548 549 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, 550 crypt_len, rxb); 551 } 552 553 struct iwl_mvm_stat_data { 554 struct iwl_mvm *mvm; 555 __le32 flags; 556 __le32 mac_id; 557 u8 beacon_filter_average_energy; 558 __le32 *beacon_counter; 559 u8 *beacon_average_energy; 560 }; 561 562 struct iwl_mvm_stat_data_all_macs { 563 struct iwl_mvm *mvm; 564 __le32 flags; 565 struct iwl_stats_ntfy_per_mac *per_mac; 566 }; 567 568 static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig, 569 struct iwl_mvm_vif_link_info *link_info, 570 struct ieee80211_bss_conf *bss_conf) 571 { 572 struct iwl_mvm *mvm = iwl_mvm_vif_from_mac80211(vif)->mvm; 573 int thold = bss_conf->cqm_rssi_thold; 574 int hyst = bss_conf->cqm_rssi_hyst; 575 int last_event; 576 s8 exit_esr_thresh; 577 578 if (sig == 0) { 579 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); 580 return; 581 } 582 583 link_info->bf_data.ave_beacon_signal = sig; 584 585 /* BT Coex */ 586 if (link_info->bf_data.bt_coex_min_thold != 587 link_info->bf_data.bt_coex_max_thold) { 588 last_event = link_info->bf_data.last_bt_coex_event; 589 if (sig > link_info->bf_data.bt_coex_max_thold && 590 (last_event <= link_info->bf_data.bt_coex_min_thold || 591 last_event == 0)) { 592 link_info->bf_data.last_bt_coex_event = sig; 593 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", 594 sig); 595 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); 596 } else if (sig < link_info->bf_data.bt_coex_min_thold && 597 (last_event >= link_info->bf_data.bt_coex_max_thold || 598 last_event == 0)) { 599 link_info->bf_data.last_bt_coex_event = sig; 600 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", 601 sig); 602 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); 603 } 604 } 605 606 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 607 return; 608 609 /* CQM Notification */ 610 last_event = link_info->bf_data.last_cqm_event; 611 if (thold && sig < thold && (last_event == 0 || 612 sig < last_event - hyst)) { 613 link_info->bf_data.last_cqm_event = sig; 614 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", 615 sig); 616 ieee80211_cqm_rssi_notify( 617 vif, 618 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 619 sig, 620 GFP_KERNEL); 621 } else if (sig > thold && 622 (last_event == 0 || sig > last_event + hyst)) { 623 link_info->bf_data.last_cqm_event = sig; 624 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", 625 sig); 626 ieee80211_cqm_rssi_notify( 627 vif, 628 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 629 sig, 630 GFP_KERNEL); 631 } 632 633 /* ESR recalculation */ 634 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 635 return; 636 637 exit_esr_thresh = 638 iwl_mvm_get_esr_rssi_thresh(mvm, 639 &bss_conf->chanreq.oper, 640 true); 641 642 if (sig < exit_esr_thresh) 643 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_LOW_RSSI, 644 iwl_mvm_get_other_link(vif, 645 bss_conf->link_id)); 646 } 647 648 static void iwl_mvm_stat_iterator(void *_data, u8 *mac, 649 struct ieee80211_vif *vif) 650 { 651 struct iwl_mvm_stat_data *data = _data; 652 int sig = -data->beacon_filter_average_energy; 653 u16 id = le32_to_cpu(data->mac_id); 654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 655 u16 vif_id = mvmvif->id; 656 657 /* This doesn't need the MAC ID check since it's not taking the 658 * data copied into the "data" struct, but rather the data from 659 * the notification directly. 660 */ 661 mvmvif->deflink.beacon_stats.num_beacons = 662 le32_to_cpu(data->beacon_counter[vif_id]); 663 mvmvif->deflink.beacon_stats.avg_signal = 664 -data->beacon_average_energy[vif_id]; 665 666 if (mvmvif->id != id) 667 return; 668 669 if (vif->type != NL80211_IFTYPE_STATION) 670 return; 671 672 /* make sure that beacon statistics don't go backwards with TCM 673 * request to clear statistics 674 */ 675 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 676 mvmvif->deflink.beacon_stats.accu_num_beacons += 677 mvmvif->deflink.beacon_stats.num_beacons; 678 679 /* This is used in pre-MLO API so use deflink */ 680 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf); 681 } 682 683 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac, 684 struct ieee80211_vif *vif) 685 { 686 struct iwl_mvm_stat_data_all_macs *data = _data; 687 struct iwl_stats_ntfy_per_mac *mac_stats; 688 int sig; 689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 690 u16 vif_id = mvmvif->id; 691 692 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id)) 693 return; 694 695 if (vif->type != NL80211_IFTYPE_STATION) 696 return; 697 698 mac_stats = &data->per_mac[vif_id]; 699 700 mvmvif->deflink.beacon_stats.num_beacons = 701 le32_to_cpu(mac_stats->beacon_counter); 702 mvmvif->deflink.beacon_stats.avg_signal = 703 -le32_to_cpu(mac_stats->beacon_average_energy); 704 705 /* make sure that beacon statistics don't go backwards with TCM 706 * request to clear statistics 707 */ 708 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 709 mvmvif->deflink.beacon_stats.accu_num_beacons += 710 mvmvif->deflink.beacon_stats.num_beacons; 711 712 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy); 713 714 /* This is used in pre-MLO API so use deflink */ 715 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf); 716 } 717 718 static inline void 719 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) 720 { 721 struct iwl_fw_dbg_trigger_tlv *trig; 722 struct iwl_fw_dbg_trigger_stats *trig_stats; 723 u32 trig_offset, trig_thold; 724 725 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS); 726 if (!trig) 727 return; 728 729 trig_stats = (void *)trig->data; 730 731 trig_offset = le32_to_cpu(trig_stats->stop_offset); 732 trig_thold = le32_to_cpu(trig_stats->stop_threshold); 733 734 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) 735 return; 736 737 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) 738 return; 739 740 #if defined(__linux__) 741 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); 742 #elif defined(__FreeBSD__) 743 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, ""); 744 #endif 745 } 746 747 static void iwl_mvm_stats_energy_iter(void *_data, 748 struct ieee80211_sta *sta) 749 { 750 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 751 u8 *energy = _data; 752 u32 sta_id = mvmsta->deflink.sta_id; 753 754 if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT_MAX, "sta_id %d >= %d", 755 sta_id, IWL_MVM_STATION_COUNT_MAX)) 756 return; 757 758 if (energy[sta_id]) 759 mvmsta->deflink.avg_energy = energy[sta_id]; 760 761 } 762 763 static void 764 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le, 765 __le32 *rx_bytes_le) 766 { 767 int i; 768 769 spin_lock(&mvm->tcm.lock); 770 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) { 771 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i]; 772 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]); 773 u32 airtime = le32_to_cpu(air_time_le[i]); 774 775 mdata->rx.airtime += airtime; 776 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes; 777 if (airtime) { 778 /* re-init every time to store rate from FW */ 779 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 780 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, 781 rx_bytes * 8 / airtime); 782 } 783 } 784 spin_unlock(&mvm->tcm.lock); 785 } 786 787 static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm, 788 struct iwl_stats_ntfy_per_phy *per_phy) 789 { 790 int i; 791 792 for (i = 0; i < NUM_PHY_CTX; i++) { 793 if (!mvm->phy_ctxts[i].ref) 794 continue; 795 mvm->phy_ctxts[i].channel_load_by_us = 796 le32_to_cpu(per_phy[i].channel_load_by_us); 797 } 798 } 799 800 static void 801 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm, 802 struct iwl_statistics_operational_ntfy *stats) 803 { 804 struct iwl_mvm_stat_data_all_macs data = { 805 .mvm = mvm, 806 .flags = stats->flags, 807 .per_mac = stats->per_mac, 808 }; 809 810 ieee80211_iterate_active_interfaces(mvm->hw, 811 IEEE80211_IFACE_ITER_NORMAL, 812 iwl_mvm_stat_iterator_all_macs, 813 &data); 814 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy); 815 } 816 817 static void 818 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm, 819 struct iwl_statistics_operational_ntfy_ver_14 *stats) 820 { 821 struct iwl_mvm_stat_data data = { 822 .mvm = mvm, 823 }; 824 825 u8 beacon_average_energy[MAC_INDEX_AUX]; 826 __le32 flags; 827 int i; 828 829 flags = stats->flags; 830 831 data.mac_id = stats->mac_id; 832 data.beacon_filter_average_energy = 833 le32_to_cpu(stats->beacon_filter_average_energy); 834 data.flags = flags; 835 data.beacon_counter = stats->beacon_counter; 836 837 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++) 838 beacon_average_energy[i] = 839 le32_to_cpu(stats->beacon_average_energy[i]); 840 841 data.beacon_average_energy = beacon_average_energy; 842 843 ieee80211_iterate_active_interfaces(mvm->hw, 844 IEEE80211_IFACE_ITER_NORMAL, 845 iwl_mvm_stat_iterator, 846 &data); 847 } 848 849 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm, 850 struct iwl_rx_packet *pkt, 851 u32 expected_size) 852 { 853 struct iwl_statistics_ntfy_hdr *hdr; 854 855 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size, 856 "received invalid statistics size (%d)!, expected_size: %d\n", 857 iwl_rx_packet_payload_len(pkt), expected_size)) 858 return false; 859 860 hdr = (void *)&pkt->data; 861 862 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL || 863 hdr->version != 864 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0), 865 "received unsupported hdr type %d, version %d\n", 866 hdr->type, hdr->version)) 867 return false; 868 869 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size, 870 "received invalid statistics size in header (%d)!, expected_size: %d\n", 871 le16_to_cpu(hdr->size), expected_size)) 872 return false; 873 874 return true; 875 } 876 877 static void 878 iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm, 879 struct iwl_stats_ntfy_per_link *per_link) 880 { 881 u32 air_time[MAC_INDEX_AUX] = {}; 882 u32 rx_bytes[MAC_INDEX_AUX] = {}; 883 int fw_link_id; 884 885 for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->link_id_to_link_conf); 886 fw_link_id++) { 887 struct iwl_stats_ntfy_per_link *link_stats; 888 struct ieee80211_bss_conf *bss_conf; 889 struct iwl_mvm_vif *mvmvif; 890 struct iwl_mvm_vif_link_info *link_info; 891 int link_id; 892 int sig; 893 894 bss_conf = iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, fw_link_id, 895 false); 896 if (!bss_conf) 897 continue; 898 899 if (bss_conf->vif->type != NL80211_IFTYPE_STATION) 900 continue; 901 902 link_id = bss_conf->link_id; 903 if (link_id >= ARRAY_SIZE(mvmvif->link)) 904 continue; 905 906 mvmvif = iwl_mvm_vif_from_mac80211(bss_conf->vif); 907 link_info = mvmvif->link[link_id]; 908 if (!link_info) 909 continue; 910 911 link_stats = &per_link[fw_link_id]; 912 913 link_info->beacon_stats.num_beacons = 914 le32_to_cpu(link_stats->beacon_counter); 915 916 /* we basically just use the u8 to store 8 bits and then treat 917 * it as a s8 whenever we take it out to a different type. 918 */ 919 link_info->beacon_stats.avg_signal = 920 -le32_to_cpu(link_stats->beacon_average_energy); 921 922 if (link_info->phy_ctxt && 923 link_info->phy_ctxt->channel->band == NL80211_BAND_2GHZ) 924 iwl_mvm_bt_coex_update_link_esr(mvm, bss_conf->vif, 925 link_id); 926 927 /* make sure that beacon statistics don't go backwards with TCM 928 * request to clear statistics 929 */ 930 if (mvm->statistics_clear) 931 mvmvif->link[link_id]->beacon_stats.accu_num_beacons += 932 mvmvif->link[link_id]->beacon_stats.num_beacons; 933 934 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy); 935 iwl_mvm_update_link_sig(bss_conf->vif, sig, link_info, 936 bss_conf); 937 938 if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX, 939 "invalid mvmvif id: %d", mvmvif->id)) 940 continue; 941 942 air_time[mvmvif->id] += 943 le32_to_cpu(per_link[fw_link_id].air_time); 944 rx_bytes[mvmvif->id] += 945 le32_to_cpu(per_link[fw_link_id].rx_bytes); 946 } 947 948 /* Don't update in case the statistics are not cleared, since 949 * we will end up counting twice the same airtime, once in TCM 950 * request and once in statistics notification. 951 */ 952 if (mvm->statistics_clear) { 953 __le32 air_time_le[MAC_INDEX_AUX]; 954 __le32 rx_bytes_le[MAC_INDEX_AUX]; 955 int vif_id; 956 957 for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) { 958 air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]); 959 rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]); 960 } 961 962 iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le); 963 } 964 } 965 966 #define SEC_LINK_MIN_PERC 10 967 #define SEC_LINK_MIN_TX 3000 968 #define SEC_LINK_MIN_RX 400 969 970 static void iwl_mvm_update_esr_mode_tpt(struct iwl_mvm *mvm) 971 { 972 struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm); 973 struct iwl_mvm_vif *mvmvif; 974 struct iwl_mvm_sta *mvmsta; 975 unsigned long total_tx = 0, total_rx = 0; 976 unsigned long sec_link_tx = 0, sec_link_rx = 0; 977 u8 sec_link_tx_perc, sec_link_rx_perc; 978 u8 sec_link; 979 980 lockdep_assert_held(&mvm->mutex); 981 982 if (IS_ERR_OR_NULL(bss_vif)) 983 return; 984 985 mvmvif = iwl_mvm_vif_from_mac80211(bss_vif); 986 987 if (!mvmvif->esr_active || !mvmvif->ap_sta) 988 return; 989 990 mvmsta = iwl_mvm_sta_from_mac80211(mvmvif->ap_sta); 991 /* We only count for the AP sta in a MLO connection */ 992 if (!mvmsta->mpdu_counters) 993 return; 994 995 /* Get the FW ID of the secondary link */ 996 sec_link = iwl_mvm_get_other_link(bss_vif, 997 iwl_mvm_get_primary_link(bss_vif)); 998 if (WARN_ON(!mvmvif->link[sec_link])) 999 return; 1000 sec_link = mvmvif->link[sec_link]->fw_link_id; 1001 1002 /* Sum up RX and TX MPDUs from the different queues/links */ 1003 for (int q = 0; q < mvm->trans->num_rx_queues; q++) { 1004 spin_lock_bh(&mvmsta->mpdu_counters[q].lock); 1005 1006 /* The link IDs that doesn't exist will contain 0 */ 1007 for (int link = 0; link < IWL_MVM_FW_MAX_LINK_ID; link++) { 1008 total_tx += mvmsta->mpdu_counters[q].per_link[link].tx; 1009 total_rx += mvmsta->mpdu_counters[q].per_link[link].rx; 1010 } 1011 1012 sec_link_tx += mvmsta->mpdu_counters[q].per_link[sec_link].tx; 1013 sec_link_rx += mvmsta->mpdu_counters[q].per_link[sec_link].rx; 1014 1015 /* 1016 * In EMLSR we have statistics every 5 seconds, so we can reset 1017 * the counters upon every statistics notification. 1018 */ 1019 memset(mvmsta->mpdu_counters[q].per_link, 0, 1020 sizeof(mvmsta->mpdu_counters[q].per_link)); 1021 1022 spin_unlock_bh(&mvmsta->mpdu_counters[q].lock); 1023 } 1024 1025 IWL_DEBUG_STATS(mvm, "total Tx MPDUs: %ld. total Rx MPDUs: %ld\n", 1026 total_tx, total_rx); 1027 1028 /* If we don't have enough MPDUs - exit EMLSR */ 1029 if (total_tx < IWL_MVM_ENTER_ESR_TPT_THRESH && 1030 total_rx < IWL_MVM_ENTER_ESR_TPT_THRESH) { 1031 iwl_mvm_block_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_TPT, 1032 iwl_mvm_get_primary_link(bss_vif)); 1033 return; 1034 } 1035 1036 /* Calculate the percentage of the secondary link TX/RX */ 1037 sec_link_tx_perc = total_tx ? sec_link_tx * 100 / total_tx : 0; 1038 sec_link_rx_perc = total_rx ? sec_link_rx * 100 / total_rx : 0; 1039 1040 /* 1041 * The TX/RX percentage is checked only if it exceeds the required 1042 * minimum. In addition, RX is checked only if the TX check failed. 1043 */ 1044 if ((total_tx > SEC_LINK_MIN_TX && 1045 sec_link_tx_perc < SEC_LINK_MIN_PERC) || 1046 (total_rx > SEC_LINK_MIN_RX && 1047 sec_link_rx_perc < SEC_LINK_MIN_PERC)) 1048 iwl_mvm_exit_esr(mvm, bss_vif, IWL_MVM_ESR_EXIT_LINK_USAGE, 1049 iwl_mvm_get_primary_link(bss_vif)); 1050 } 1051 1052 void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm, 1053 struct iwl_rx_cmd_buffer *rxb) 1054 { 1055 u8 average_energy[IWL_MVM_STATION_COUNT_MAX]; 1056 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1057 struct iwl_system_statistics_notif_oper *stats; 1058 int i; 1059 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP, 1060 STATISTICS_OPER_NOTIF, 0); 1061 1062 if (notif_ver != 3) { 1063 IWL_FW_CHECK_FAILED(mvm, 1064 "Oper stats notif ver %d is not supported\n", 1065 notif_ver); 1066 return; 1067 } 1068 1069 stats = (void *)&pkt->data; 1070 iwl_mvm_stat_iterator_all_links(mvm, stats->per_link); 1071 1072 for (i = 0; i < ARRAY_SIZE(average_energy); i++) 1073 average_energy[i] = 1074 le32_to_cpu(stats->per_sta[i].average_energy); 1075 1076 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1077 average_energy); 1078 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy); 1079 1080 iwl_mvm_update_esr_mode_tpt(mvm); 1081 } 1082 1083 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm, 1084 struct iwl_rx_cmd_buffer *rxb) 1085 { 1086 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1087 struct iwl_system_statistics_part1_notif_oper *part1_stats; 1088 int i; 1089 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP, 1090 STATISTICS_OPER_PART1_NOTIF, 0); 1091 1092 if (notif_ver != 4) { 1093 IWL_FW_CHECK_FAILED(mvm, 1094 "Part1 stats notif ver %d is not supported\n", 1095 notif_ver); 1096 return; 1097 } 1098 1099 part1_stats = (void *)&pkt->data; 1100 mvm->radio_stats.rx_time = 0; 1101 mvm->radio_stats.tx_time = 0; 1102 for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) { 1103 mvm->radio_stats.rx_time += 1104 le64_to_cpu(part1_stats->per_link[i].rx_time); 1105 mvm->radio_stats.tx_time += 1106 le64_to_cpu(part1_stats->per_link[i].tx_time); 1107 } 1108 } 1109 1110 static void 1111 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm, 1112 struct iwl_rx_packet *pkt) 1113 { 1114 u8 average_energy[IWL_MVM_STATION_COUNT_MAX]; 1115 __le32 air_time[MAC_INDEX_AUX]; 1116 __le32 rx_bytes[MAC_INDEX_AUX]; 1117 __le32 flags = 0; 1118 int i; 1119 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1120 STATISTICS_NOTIFICATION, 0); 1121 1122 if (WARN_ONCE(notif_ver > 15, 1123 "invalid statistics version id: %d\n", notif_ver)) 1124 return; 1125 1126 if (notif_ver == 14) { 1127 struct iwl_statistics_operational_ntfy_ver_14 *stats = 1128 (void *)pkt->data; 1129 1130 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats))) 1131 return; 1132 1133 iwl_mvm_stats_ver_14(mvm, stats); 1134 1135 flags = stats->flags; 1136 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time); 1137 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time); 1138 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf); 1139 mvm->radio_stats.on_time_scan = 1140 le64_to_cpu(stats->on_time_scan); 1141 1142 for (i = 0; i < ARRAY_SIZE(average_energy); i++) 1143 average_energy[i] = le32_to_cpu(stats->average_energy[i]); 1144 1145 for (i = 0; i < ARRAY_SIZE(air_time); i++) { 1146 air_time[i] = stats->air_time[i]; 1147 rx_bytes[i] = stats->rx_bytes[i]; 1148 } 1149 } 1150 1151 if (notif_ver == 15) { 1152 struct iwl_statistics_operational_ntfy *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_15(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] = 1169 le32_to_cpu(stats->per_sta[i].average_energy); 1170 1171 for (i = 0; i < ARRAY_SIZE(air_time); i++) { 1172 air_time[i] = stats->per_mac[i].air_time; 1173 rx_bytes[i] = stats->per_mac[i].rx_bytes; 1174 } 1175 } 1176 1177 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 1178 1179 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1180 average_energy); 1181 /* 1182 * Don't update in case the statistics are not cleared, since 1183 * we will end up counting twice the same airtime, once in TCM 1184 * request and once in statistics notification. 1185 */ 1186 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 1187 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes); 1188 } 1189 1190 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, 1191 struct iwl_rx_packet *pkt) 1192 { 1193 struct iwl_mvm_stat_data data = { 1194 .mvm = mvm, 1195 }; 1196 __le32 *bytes, *air_time, flags; 1197 int expected_size; 1198 u8 *energy; 1199 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1200 WIDE_ID(SYSTEM_GROUP, 1201 SYSTEM_STATISTICS_CMD), 1202 IWL_FW_CMD_VER_UNKNOWN); 1203 1204 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN) 1205 return; 1206 1207 /* From ver 14 and up we use TLV statistics format */ 1208 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1209 STATISTICS_NOTIFICATION, 0) >= 14) 1210 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt); 1211 1212 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1213 if (iwl_mvm_has_new_rx_api(mvm)) 1214 expected_size = sizeof(struct iwl_notif_statistics_v11); 1215 else 1216 expected_size = sizeof(struct iwl_notif_statistics_v10); 1217 } else { 1218 expected_size = sizeof(struct iwl_notif_statistics); 1219 } 1220 1221 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size, 1222 "received invalid statistics size (%d)!\n", 1223 iwl_rx_packet_payload_len(pkt))) 1224 return; 1225 1226 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1227 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data; 1228 1229 data.mac_id = stats->rx.general.mac_id; 1230 data.beacon_filter_average_energy = 1231 stats->general.common.beacon_filter_average_energy; 1232 1233 mvm->rx_stats_v3 = stats->rx; 1234 1235 mvm->radio_stats.rx_time = 1236 le64_to_cpu(stats->general.common.rx_time); 1237 mvm->radio_stats.tx_time = 1238 le64_to_cpu(stats->general.common.tx_time); 1239 mvm->radio_stats.on_time_rf = 1240 le64_to_cpu(stats->general.common.on_time_rf); 1241 mvm->radio_stats.on_time_scan = 1242 le64_to_cpu(stats->general.common.on_time_scan); 1243 1244 data.beacon_counter = stats->general.beacon_counter; 1245 data.beacon_average_energy = 1246 stats->general.beacon_average_energy; 1247 flags = stats->flag; 1248 } else { 1249 struct iwl_notif_statistics *stats = (void *)&pkt->data; 1250 1251 data.mac_id = stats->rx.general.mac_id; 1252 data.beacon_filter_average_energy = 1253 stats->general.common.beacon_filter_average_energy; 1254 1255 mvm->rx_stats = stats->rx; 1256 1257 mvm->radio_stats.rx_time = 1258 le64_to_cpu(stats->general.common.rx_time); 1259 mvm->radio_stats.tx_time = 1260 le64_to_cpu(stats->general.common.tx_time); 1261 mvm->radio_stats.on_time_rf = 1262 le64_to_cpu(stats->general.common.on_time_rf); 1263 mvm->radio_stats.on_time_scan = 1264 le64_to_cpu(stats->general.common.on_time_scan); 1265 1266 data.beacon_counter = stats->general.beacon_counter; 1267 data.beacon_average_energy = 1268 stats->general.beacon_average_energy; 1269 flags = stats->flag; 1270 } 1271 data.flags = flags; 1272 1273 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 1274 1275 ieee80211_iterate_active_interfaces(mvm->hw, 1276 IEEE80211_IFACE_ITER_NORMAL, 1277 iwl_mvm_stat_iterator, 1278 &data); 1279 1280 if (!iwl_mvm_has_new_rx_api(mvm)) 1281 return; 1282 1283 if (!iwl_mvm_has_new_rx_stats_api(mvm)) { 1284 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data; 1285 1286 energy = (void *)&v11->load_stats.avg_energy; 1287 bytes = (void *)&v11->load_stats.byte_count; 1288 air_time = (void *)&v11->load_stats.air_time; 1289 } else { 1290 struct iwl_notif_statistics *stats = (void *)&pkt->data; 1291 1292 energy = (void *)&stats->load_stats.avg_energy; 1293 bytes = (void *)&stats->load_stats.byte_count; 1294 air_time = (void *)&stats->load_stats.air_time; 1295 } 1296 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter, 1297 energy); 1298 1299 /* 1300 * Don't update in case the statistics are not cleared, since 1301 * we will end up counting twice the same airtime, once in TCM 1302 * request and once in statistics notification. 1303 */ 1304 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) 1305 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes); 1306 1307 } 1308 1309 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 1310 { 1311 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); 1312 } 1313 1314 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, 1315 struct iwl_rx_cmd_buffer *rxb) 1316 { 1317 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1318 struct iwl_ba_window_status_notif *notif = (void *)pkt->data; 1319 int i; 1320 1321 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX); 1322 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX); 1323 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX); 1324 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX); 1325 1326 rcu_read_lock(); 1327 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { 1328 struct ieee80211_sta *sta; 1329 u8 sta_id, tid; 1330 u64 bitmap; 1331 u32 ssn; 1332 u16 ratid; 1333 u16 received_mpdu; 1334 1335 ratid = le16_to_cpu(notif->ra_tid[i]); 1336 /* check that this TID is valid */ 1337 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) 1338 continue; 1339 1340 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); 1341 if (received_mpdu == 0) 1342 continue; 1343 1344 tid = ratid & BA_WINDOW_STATUS_TID_MSK; 1345 /* get the station */ 1346 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) 1347 >> BA_WINDOW_STATUS_STA_ID_POS; 1348 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1349 if (IS_ERR_OR_NULL(sta)) 1350 continue; 1351 bitmap = le64_to_cpu(notif->bitmap[i]); 1352 ssn = le32_to_cpu(notif->start_seq_num[i]); 1353 1354 /* update mac80211 with the bitmap for the reordering buffer */ 1355 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, 1356 received_mpdu); 1357 } 1358 rcu_read_unlock(); 1359 } 1360