drivers/net/wireless/intel/iwlwifi/mvm/rx.c

   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 (!mvm->monitor_on)
 193                         IWL_WARN(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
 194         }
 195
 196         return 0;
 197 }
 198
 199 static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
 200                                   struct ieee80211_sta *sta,
 201                                   struct ieee80211_hdr *hdr, u32 len,
 202                                   struct iwl_rx_phy_info *phy_info,
 203                                   u32 rate_n_flags)
 204 {
 205         struct iwl_mvm_sta *mvmsta;
 206         struct iwl_mvm_tcm_mac *mdata;
 207         int mac;
 208         int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
 209         struct iwl_mvm_vif *mvmvif;
 210         /* expected throughput in 100Kbps, single stream, 20 MHz */
 211         static const u8 thresh_tpt[] = {
 212                 9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
 213         };
 214         u16 thr;
 215
 216         if (ieee80211_is_data_qos(hdr->frame_control)) {
 217                 u8 tid = ieee80211_get_tid(hdr);
 218
 219                 if (tid < IWL_MAX_TID_COUNT)
 220                         ac = tid_to_mac80211_ac[tid];
 221         }
 222
 223         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 224         mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
 225
 226         if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
 227                 schedule_delayed_work(&mvm->tcm.work, 0);
 228         mdata = &mvm->tcm.data[mac];
 229         mdata->rx.pkts[ac]++;
 230
 231         /* count the airtime only once for each ampdu */
 232         if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
 233                 mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
 234                 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
 235         }
 236
 237         if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
 238                 return;
 239
 240         mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 241
 242         if (mdata->opened_rx_ba_sessions ||
 243             mdata->uapsd_nonagg_detect.detected ||
 244             (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
 245              !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
 246              !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
 247              !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) ||
 248             mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id)
 249                 return;
 250
 251         if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
 252                 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
 253                 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
 254                                         RATE_HT_MCS_NSS_POS_V1);
 255         } else {
 256                 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
 257                                 ARRAY_SIZE(thresh_tpt)))
 258                         return;
 259                 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
 260                 thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags);
 261         }
 262
 263         thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
 264                                 RATE_MCS_CHAN_WIDTH_POS);
 265
 266         mdata->uapsd_nonagg_detect.rx_bytes += len;
 267         ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
 268 }
 269
 270 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
 271                             struct sk_buff *skb,
 272                             u32 status)
 273 {
 274         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 275         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 276
 277         if (mvmvif->features & NETIF_F_RXCSUM &&
 278             status & RX_MPDU_RES_STATUS_CSUM_DONE &&
 279             status & RX_MPDU_RES_STATUS_CSUM_OK)
 280                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 281 }
 282
 283 /*
 284  * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
 285  *
 286  * Handles the actual data of the Rx packet from the fw
 287  */
 288 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
 289                         struct iwl_rx_cmd_buffer *rxb)
 290 {
 291         struct ieee80211_hdr *hdr;
 292         struct ieee80211_rx_status *rx_status;
 293         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 294         struct iwl_rx_phy_info *phy_info;
 295         struct iwl_rx_mpdu_res_start *rx_res;
 296         struct ieee80211_sta *sta = NULL;
 297         struct sk_buff *skb;
 298         u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
 299         u32 rate_n_flags;
 300         u32 rx_pkt_status;
 301         u8 crypt_len = 0;
 302
 303         if (unlikely(pkt_len < sizeof(*rx_res))) {
 304                 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
 305                 return;
 306         }
 307
 308         phy_info = &mvm->last_phy_info;
 309         rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
 310         hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
 311         len = le16_to_cpu(rx_res->byte_count);
 312
 313         if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
 314                 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
 315                 return;
 316         }
 317
 318         rx_pkt_status = get_unaligned_le32((__le32 *)
 319                 (pkt->data + sizeof(*rx_res) + len));
 320
 321         /* Dont use dev_alloc_skb(), we'll have enough headroom once
 322          * ieee80211_hdr pulled.
 323          */
 324         skb = alloc_skb(128, GFP_ATOMIC);
 325         if (!skb) {
 326                 IWL_ERR(mvm, "alloc_skb failed\n");
 327                 return;
 328         }
 329
 330         rx_status = IEEE80211_SKB_RXCB(skb);
 331
 332         /*
 333          * Keep packets with CRC errors (and with overrun) for monitor mode
 334          * (otherwise the firmware discards them) but mark them as bad.
 335          */
 336         if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
 337             !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
 338                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
 339                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 340         }
 341
 342         /* This will be used in several places later */
 343         rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
 344
 345         /* rx_status carries information about the packet to mac80211 */
 346         rx_status->mactime = le64_to_cpu(phy_info->timestamp);
 347         rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
 348         rx_status->band =
 349                 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
 350                                 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
 351         rx_status->freq =
 352                 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
 353                                                rx_status->band);
 354
 355         /* TSF as indicated by the firmware  is at INA time */
 356         rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
 357
 358         iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
 359
 360         IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
 361                               (unsigned long long)rx_status->mactime);
 362
 363         rcu_read_lock();
 364         if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
 365                 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
 366
 367                 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
 368
 369                 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
 370                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
 371                         if (IS_ERR(sta))
 372                                 sta = NULL;
 373                 }
 374         } else if (!is_multicast_ether_addr(hdr->addr2)) {
 375                 /* This is fine since we prevent two stations with the same
 376                  * address from being added.
 377                  */
 378                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
 379         }
 380
 381         if (sta) {
 382                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 383                 struct ieee80211_vif *vif = mvmsta->vif;
 384                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 385
 386                 /*
 387                  * Don't even try to decrypt a MCAST frame that was received
 388                  * before the managed vif is authorized, we'd fail anyway.
 389                  */
 390                 if (is_multicast_ether_addr(hdr->addr1) &&
 391                     vif->type == NL80211_IFTYPE_STATION &&
 392                     !mvmvif->authorized &&
 393                     ieee80211_has_protected(hdr->frame_control)) {
 394                         IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
 395                         kfree_skb(skb);
 396                         rcu_read_unlock();
 397                         return;
 398                 }
 399         }
 400
 401         /*
 402          * drop the packet if it has failed being decrypted by HW
 403          */
 404         if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
 405                                          &crypt_len)) {
 406                 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
 407                                rx_pkt_status);
 408                 kfree_skb(skb);
 409                 rcu_read_unlock();
 410                 return;
 411         }
 412
 413         if (sta) {
 414                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 415                 struct ieee80211_vif *tx_blocked_vif =
 416                         rcu_dereference(mvm->csa_tx_blocked_vif);
 417                 struct iwl_fw_dbg_trigger_tlv *trig;
 418                 struct ieee80211_vif *vif = mvmsta->vif;
 419
 420                 /* We have tx blocked stations (with CS bit). If we heard
 421                  * frames from a blocked station on a new channel we can
 422                  * TX to it again.
 423                  */
 424                 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
 425                         struct iwl_mvm_vif *mvmvif =
 426                                 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 427
 428                         if (mvmvif->csa_target_freq == rx_status->freq)
 429                                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
 430                                                                  false);
 431                 }
 432
 433                 rs_update_last_rssi(mvm, mvmsta, rx_status);
 434
 435                 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
 436                                              ieee80211_vif_to_wdev(vif),
 437                                              FW_DBG_TRIGGER_RSSI);
 438
 439                 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
 440                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
 441                         s32 rssi;
 442
 443                         rssi_trig = (void *)trig->data;
 444                         rssi = le32_to_cpu(rssi_trig->rssi);
 445
 446                         if (rx_status->signal < rssi)
 447                                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 448                                                         NULL);
 449                 }
 450
 451                 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
 452                     !is_multicast_ether_addr(hdr->addr1) &&
 453                     ieee80211_is_data(hdr->frame_control))
 454                         iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
 455                                               rate_n_flags);
 456
 457                 if (ieee80211_is_data(hdr->frame_control))
 458                         iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
 459         }
 460         rcu_read_unlock();
 461
 462         /* set the preamble flag if appropriate */
 463         if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
 464                 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
 465
 466         if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
 467                 /*
 468                  * We know which subframes of an A-MPDU belong
 469                  * together since we get a single PHY response
 470                  * from the firmware for all of them
 471                  */
 472                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
 473                 rx_status->ampdu_reference = mvm->ampdu_ref;
 474         }
 475
 476         /* Set up the HT phy flags */
 477         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
 478         case RATE_MCS_CHAN_WIDTH_20:
 479                 break;
 480         case RATE_MCS_CHAN_WIDTH_40:
 481                 rx_status->bw = RATE_INFO_BW_40;
 482                 break;
 483         case RATE_MCS_CHAN_WIDTH_80:
 484                 rx_status->bw = RATE_INFO_BW_80;
 485                 break;
 486         case RATE_MCS_CHAN_WIDTH_160:
 487                 rx_status->bw = RATE_INFO_BW_160;
 488                 break;
 489         }
 490         if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
 491             rate_n_flags & RATE_MCS_SGI_MSK_V1)
 492                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
 493         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
 494                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
 495         if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
 496                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
 497         if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
 498                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
 499                                 RATE_MCS_STBC_POS;
 500                 rx_status->encoding = RX_ENC_HT;
 501                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
 502                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
 503         } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
 504                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
 505                                 RATE_MCS_STBC_POS;
 506                 rx_status->nss =
 507                         FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1;
 508                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
 509                 rx_status->encoding = RX_ENC_VHT;
 510                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
 511                 if (rate_n_flags & RATE_MCS_BF_MSK)
 512                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
 513         } else {
 514                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
 515                                                                rx_status->band);
 516
 517                 if (WARN(rate < 0 || rate > 0xFF,
 518                          "Invalid rate flags 0x%x, band %d,\n",
 519                          rate_n_flags, rx_status->band)) {
 520                         kfree_skb(skb);
 521                         return;
 522                 }
 523                 rx_status->rate_idx = rate;
 524         }
 525
 526 #ifdef CONFIG_IWLWIFI_DEBUGFS
 527         iwl_mvm_update_frame_stats(mvm, rate_n_flags,
 528                                    rx_status->flag & RX_FLAG_AMPDU_DETAILS);
 529 #endif
 530
 531         if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
 532                       ieee80211_is_probe_resp(hdr->frame_control)) &&
 533                      mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
 534                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
 535
 536         if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 537                      ieee80211_is_probe_resp(hdr->frame_control)))
 538                 rx_status->boottime_ns = ktime_get_boottime_ns();
 539
 540         iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
 541                                         crypt_len, rxb);
 542 }
 543
 544 struct iwl_mvm_stat_data {
 545         struct iwl_mvm *mvm;
 546         __le32 flags;
 547         __le32 mac_id;
 548         u8 beacon_filter_average_energy;
 549         __le32 *beacon_counter;
 550         u8 *beacon_average_energy;
 551 };
 552
 553 struct iwl_mvm_stat_data_all_macs {
 554         struct iwl_mvm *mvm;
 555         __le32 flags;
 556         struct iwl_stats_ntfy_per_mac *per_mac;
 557 };
 558
 559 static void iwl_mvm_update_vif_sig(struct ieee80211_vif *vif, int sig)
 560 {
 561         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 562         struct iwl_mvm *mvm = mvmvif->mvm;
 563         int thold = vif->bss_conf.cqm_rssi_thold;
 564         int hyst = vif->bss_conf.cqm_rssi_hyst;
 565         int last_event;
 566
 567         if (sig == 0) {
 568                 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
 569                 return;
 570         }
 571
 572         mvmvif->bf_data.ave_beacon_signal = sig;
 573
 574         /* BT Coex */
 575         if (mvmvif->bf_data.bt_coex_min_thold !=
 576             mvmvif->bf_data.bt_coex_max_thold) {
 577                 last_event = mvmvif->bf_data.last_bt_coex_event;
 578                 if (sig > mvmvif->bf_data.bt_coex_max_thold &&
 579                     (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
 580                      last_event == 0)) {
 581                         mvmvif->bf_data.last_bt_coex_event = sig;
 582                         IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
 583                                      sig);
 584                         iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
 585                 } else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
 586                            (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
 587                             last_event == 0)) {
 588                         mvmvif->bf_data.last_bt_coex_event = sig;
 589                         IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
 590                                      sig);
 591                         iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
 592                 }
 593         }
 594
 595         if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
 596                 return;
 597
 598         /* CQM Notification */
 599         last_event = mvmvif->bf_data.last_cqm_event;
 600         if (thold && sig < thold && (last_event == 0 ||
 601                                      sig < last_event - hyst)) {
 602                 mvmvif->bf_data.last_cqm_event = sig;
 603                 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
 604                              sig);
 605                 ieee80211_cqm_rssi_notify(
 606                         vif,
 607                         NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
 608                         sig,
 609                         GFP_KERNEL);
 610         } else if (sig > thold &&
 611                    (last_event == 0 || sig > last_event + hyst)) {
 612                 mvmvif->bf_data.last_cqm_event = sig;
 613                 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
 614                              sig);
 615                 ieee80211_cqm_rssi_notify(
 616                         vif,
 617                         NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
 618                         sig,
 619                         GFP_KERNEL);
 620         }
 621 }
 622
 623 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
 624                                   struct ieee80211_vif *vif)
 625 {
 626         struct iwl_mvm_stat_data *data = _data;
 627         int sig = -data->beacon_filter_average_energy;
 628         u16 id = le32_to_cpu(data->mac_id);
 629         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 630         u16 vif_id = mvmvif->id;
 631
 632         /* This doesn't need the MAC ID check since it's not taking the
 633          * data copied into the "data" struct, but rather the data from
 634          * the notification directly.
 635          */
 636         mvmvif->deflink.beacon_stats.num_beacons =
 637                 le32_to_cpu(data->beacon_counter[vif_id]);
 638         mvmvif->deflink.beacon_stats.avg_signal =
 639                 -data->beacon_average_energy[vif_id];
 640
 641         if (mvmvif->id != id)
 642                 return;
 643
 644         if (vif->type != NL80211_IFTYPE_STATION)
 645                 return;
 646
 647         /* make sure that beacon statistics don't go backwards with TCM
 648          * request to clear statistics
 649          */
 650         if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
 651                 mvmvif->deflink.beacon_stats.accu_num_beacons +=
 652                         mvmvif->deflink.beacon_stats.num_beacons;
 653
 654         iwl_mvm_update_vif_sig(vif, sig);
 655 }
 656
 657 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
 658                                            struct ieee80211_vif *vif)
 659 {
 660         struct iwl_mvm_stat_data_all_macs *data = _data;
 661         struct iwl_stats_ntfy_per_mac *mac_stats;
 662         int sig;
 663         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 664         u16 vif_id = mvmvif->id;
 665
 666         if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
 667                 return;
 668
 669         if (vif->type != NL80211_IFTYPE_STATION)
 670                 return;
 671
 672         mac_stats = &data->per_mac[vif_id];
 673
 674         mvmvif->deflink.beacon_stats.num_beacons =
 675                 le32_to_cpu(mac_stats->beacon_counter);
 676         mvmvif->deflink.beacon_stats.avg_signal =
 677                 -le32_to_cpu(mac_stats->beacon_average_energy);
 678
 679         /* make sure that beacon statistics don't go backwards with TCM
 680          * request to clear statistics
 681          */
 682         if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
 683                 mvmvif->deflink.beacon_stats.accu_num_beacons +=
 684                         mvmvif->deflink.beacon_stats.num_beacons;
 685
 686         sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
 687         iwl_mvm_update_vif_sig(vif, sig);
 688 }
 689
 690 static inline void
 691 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
 692 {
 693         struct iwl_fw_dbg_trigger_tlv *trig;
 694         struct iwl_fw_dbg_trigger_stats *trig_stats;
 695         u32 trig_offset, trig_thold;
 696
 697         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
 698         if (!trig)
 699                 return;
 700
 701         trig_stats = (void *)trig->data;
 702
 703         trig_offset = le32_to_cpu(trig_stats->stop_offset);
 704         trig_thold = le32_to_cpu(trig_stats->stop_threshold);
 705
 706         if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
 707                 return;
 708
 709         if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
 710                 return;
 711
 712         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
 713 }
 714
 715 static void iwl_mvm_stats_energy_iter(void *_data,
 716                                       struct ieee80211_sta *sta)
 717 {
 718         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 719         u8 *energy = _data;
 720         u32 sta_id = mvmsta->deflink.sta_id;
 721
 722         if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT_MAX, "sta_id %d >= %d",
 723                       sta_id, IWL_MVM_STATION_COUNT_MAX))
 724                 return;
 725
 726         if (energy[sta_id])
 727                 mvmsta->deflink.avg_energy = energy[sta_id];
 728
 729 }
 730
 731 static void
 732 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
 733                               __le32 *rx_bytes_le)
 734 {
 735         int i;
 736
 737         spin_lock(&mvm->tcm.lock);
 738         for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
 739                 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
 740                 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
 741                 u32 airtime = le32_to_cpu(air_time_le[i]);
 742
 743                 mdata->rx.airtime += airtime;
 744                 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
 745                 if (airtime) {
 746                         /* re-init every time to store rate from FW */
 747                         ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
 748                         ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
 749                                       rx_bytes * 8 / airtime);
 750                 }
 751         }
 752         spin_unlock(&mvm->tcm.lock);
 753 }
 754
 755 static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
 756                                          struct iwl_stats_ntfy_per_phy *per_phy)
 757 {
 758         int i;
 759
 760         for (i = 0; i < NUM_PHY_CTX; i++) {
 761                 if (!mvm->phy_ctxts[i].ref)
 762                         continue;
 763                 mvm->phy_ctxts[i].channel_load_by_us =
 764                         le32_to_cpu(per_phy[i].channel_load_by_us);
 765         }
 766 }
 767
 768 static void
 769 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
 770                      struct iwl_statistics_operational_ntfy *stats)
 771 {
 772         struct iwl_mvm_stat_data_all_macs data = {
 773                 .mvm = mvm,
 774                 .flags = stats->flags,
 775                 .per_mac = stats->per_mac,
 776         };
 777
 778         ieee80211_iterate_active_interfaces(mvm->hw,
 779                                             IEEE80211_IFACE_ITER_NORMAL,
 780                                             iwl_mvm_stat_iterator_all_macs,
 781                                             &data);
 782         iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 783 }
 784
 785 static void
 786 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
 787                      struct iwl_statistics_operational_ntfy_ver_14 *stats)
 788 {
 789         struct iwl_mvm_stat_data data = {
 790                 .mvm = mvm,
 791         };
 792
 793         u8 beacon_average_energy[MAC_INDEX_AUX];
 794         __le32 flags;
 795         int i;
 796
 797         flags = stats->flags;
 798
 799         data.mac_id = stats->mac_id;
 800         data.beacon_filter_average_energy =
 801                 le32_to_cpu(stats->beacon_filter_average_energy);
 802         data.flags = flags;
 803         data.beacon_counter = stats->beacon_counter;
 804
 805         for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
 806                 beacon_average_energy[i] =
 807                         le32_to_cpu(stats->beacon_average_energy[i]);
 808
 809         data.beacon_average_energy = beacon_average_energy;
 810
 811         ieee80211_iterate_active_interfaces(mvm->hw,
 812                                             IEEE80211_IFACE_ITER_NORMAL,
 813                                             iwl_mvm_stat_iterator,
 814                                             &data);
 815 }
 816
 817 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
 818                                      struct iwl_rx_packet *pkt,
 819                                      u32 expected_size)
 820 {
 821         struct iwl_statistics_ntfy_hdr *hdr;
 822
 823         if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
 824                       "received invalid statistics size (%d)!, expected_size: %d\n",
 825                       iwl_rx_packet_payload_len(pkt), expected_size))
 826                 return false;
 827
 828         hdr = (void *)&pkt->data;
 829
 830         if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
 831                       hdr->version !=
 832                       iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
 833                       "received unsupported hdr type %d, version %d\n",
 834                       hdr->type, hdr->version))
 835                 return false;
 836
 837         if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
 838                       "received invalid statistics size in header (%d)!, expected_size: %d\n",
 839                       le16_to_cpu(hdr->size), expected_size))
 840                 return false;
 841
 842         return true;
 843 }
 844
 845 static void
 846 iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm,
 847                                 struct iwl_stats_ntfy_per_link *per_link)
 848 {
 849         u32 air_time[MAC_INDEX_AUX] = {};
 850         u32 rx_bytes[MAC_INDEX_AUX] = {};
 851         int fw_link_id;
 852
 853         for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->link_id_to_link_conf);
 854              fw_link_id++) {
 855                 struct iwl_stats_ntfy_per_link *link_stats;
 856                 struct ieee80211_bss_conf *bss_conf;
 857                 struct iwl_mvm_vif *mvmvif;
 858                 struct iwl_mvm_vif_link_info *link_info;
 859                 int link_id;
 860                 int sig;
 861
 862                 bss_conf = iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, fw_link_id,
 863                                                                false);
 864                 if (!bss_conf)
 865                         continue;
 866
 867                 if (bss_conf->vif->type != NL80211_IFTYPE_STATION)
 868                         continue;
 869
 870                 link_id = bss_conf->link_id;
 871                 if (link_id >= ARRAY_SIZE(mvmvif->link))
 872                         continue;
 873
 874                 mvmvif = iwl_mvm_vif_from_mac80211(bss_conf->vif);
 875                 link_info = mvmvif->link[link_id];
 876                 if (!link_info)
 877                         continue;
 878
 879                 link_stats = &per_link[fw_link_id];
 880
 881                 link_info->beacon_stats.num_beacons =
 882                         le32_to_cpu(link_stats->beacon_counter);
 883
 884                 /* we basically just use the u8 to store 8 bits and then treat
 885                  * it as a s8 whenever we take it out to a different type.
 886                  */
 887                 link_info->beacon_stats.avg_signal =
 888                         -le32_to_cpu(link_stats->beacon_average_energy);
 889
 890                 if (link_info->phy_ctxt &&
 891                     link_info->phy_ctxt->channel->band == NL80211_BAND_2GHZ)
 892                         iwl_mvm_bt_coex_update_vif_esr(mvm, bss_conf->vif,
 893                                                        link_id);
 894
 895                 /* make sure that beacon statistics don't go backwards with TCM
 896                  * request to clear statistics
 897                  */
 898                 if (mvm->statistics_clear)
 899                         mvmvif->link[link_id]->beacon_stats.accu_num_beacons +=
 900                                 mvmvif->link[link_id]->beacon_stats.num_beacons;
 901
 902                 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy);
 903                 iwl_mvm_update_vif_sig(bss_conf->vif, sig);
 904
 905                 if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX,
 906                               "invalid mvmvif id: %d", mvmvif->id))
 907                         continue;
 908
 909                 air_time[mvmvif->id] +=
 910                         le32_to_cpu(per_link[fw_link_id].air_time);
 911                 rx_bytes[mvmvif->id] +=
 912                         le32_to_cpu(per_link[fw_link_id].rx_bytes);
 913         }
 914
 915         /* Don't update in case the statistics are not cleared, since
 916          * we will end up counting twice the same airtime, once in TCM
 917          * request and once in statistics notification.
 918          */
 919         if (mvm->statistics_clear) {
 920                 __le32 air_time_le[MAC_INDEX_AUX];
 921                 __le32 rx_bytes_le[MAC_INDEX_AUX];
 922                 int vif_id;
 923
 924                 for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) {
 925                         air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]);
 926                         rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]);
 927                 }
 928
 929                 iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le);
 930         }
 931 }
 932
 933 void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
 934                                          struct iwl_rx_cmd_buffer *rxb)
 935 {
 936         u8 average_energy[IWL_MVM_STATION_COUNT_MAX];
 937         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 938         struct iwl_system_statistics_notif_oper *stats;
 939         int i;
 940         u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
 941                                                 STATISTICS_OPER_NOTIF, 0);
 942
 943         if (notif_ver != 3) {
 944                 IWL_FW_CHECK_FAILED(mvm,
 945                                     "Oper stats notif ver %d is not supported\n",
 946                                     notif_ver);
 947                 return;
 948         }
 949
 950         stats = (void *)&pkt->data;
 951         iwl_mvm_stat_iterator_all_links(mvm, stats->per_link);
 952
 953         for (i = 0; i < ARRAY_SIZE(average_energy); i++)
 954                 average_energy[i] =
 955                         le32_to_cpu(stats->per_sta[i].average_energy);
 956
 957         ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
 958                                           average_energy);
 959         iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 960 }
 961
 962 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,
 963                                                struct iwl_rx_cmd_buffer *rxb)
 964 {
 965         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 966         struct iwl_system_statistics_part1_notif_oper *part1_stats;
 967         int i;
 968         u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
 969                                                 STATISTICS_OPER_PART1_NOTIF, 0);
 970
 971         if (notif_ver != 4) {
 972                 IWL_FW_CHECK_FAILED(mvm,
 973                                     "Part1 stats notif ver %d is not supported\n",
 974                                     notif_ver);
 975                 return;
 976         }
 977
 978         part1_stats = (void *)&pkt->data;
 979         mvm->radio_stats.rx_time = 0;
 980         mvm->radio_stats.tx_time = 0;
 981         for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) {
 982                 mvm->radio_stats.rx_time +=
 983                         le64_to_cpu(part1_stats->per_link[i].rx_time);
 984                 mvm->radio_stats.tx_time +=
 985                         le64_to_cpu(part1_stats->per_link[i].tx_time);
 986         }
 987 }
 988
 989 static void
 990 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
 991                                  struct iwl_rx_packet *pkt)
 992 {
 993         u8 average_energy[IWL_MVM_STATION_COUNT_MAX];
 994         __le32 air_time[MAC_INDEX_AUX];
 995         __le32 rx_bytes[MAC_INDEX_AUX];
 996         __le32 flags = 0;
 997         int i;
 998         u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
 999                                               STATISTICS_NOTIFICATION, 0);
1000
1001         if (WARN_ONCE(notif_ver > 15,
1002                       "invalid statistics version id: %d\n", notif_ver))
1003                 return;
1004
1005         if (notif_ver == 14) {
1006                 struct iwl_statistics_operational_ntfy_ver_14 *stats =
1007                         (void *)pkt->data;
1008
1009                 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1010                         return;
1011
1012                 iwl_mvm_stats_ver_14(mvm, stats);
1013
1014                 flags = stats->flags;
1015                 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1016                 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1017                 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1018                 mvm->radio_stats.on_time_scan =
1019                         le64_to_cpu(stats->on_time_scan);
1020
1021                 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1022                         average_energy[i] = le32_to_cpu(stats->average_energy[i]);
1023
1024                 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1025                         air_time[i] = stats->air_time[i];
1026                         rx_bytes[i] = stats->rx_bytes[i];
1027                 }
1028         }
1029
1030         if (notif_ver == 15) {
1031                 struct iwl_statistics_operational_ntfy *stats =
1032                         (void *)pkt->data;
1033
1034                 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1035                         return;
1036
1037                 iwl_mvm_stats_ver_15(mvm, stats);
1038
1039                 flags = stats->flags;
1040                 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1041                 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1042                 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1043                 mvm->radio_stats.on_time_scan =
1044                         le64_to_cpu(stats->on_time_scan);
1045
1046                 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1047                         average_energy[i] =
1048                                 le32_to_cpu(stats->per_sta[i].average_energy);
1049
1050                 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1051                         air_time[i] = stats->per_mac[i].air_time;
1052                         rx_bytes[i] = stats->per_mac[i].rx_bytes;
1053                 }
1054         }
1055
1056         iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1057
1058         ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1059                                           average_energy);
1060         /*
1061          * Don't update in case the statistics are not cleared, since
1062          * we will end up counting twice the same airtime, once in TCM
1063          * request and once in statistics notification.
1064          */
1065         if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1066                 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
1067 }
1068
1069 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
1070                                   struct iwl_rx_packet *pkt)
1071 {
1072         struct iwl_mvm_stat_data data = {
1073                 .mvm = mvm,
1074         };
1075         __le32 *bytes, *air_time, flags;
1076         int expected_size;
1077         u8 *energy;
1078         u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1079                                            WIDE_ID(SYSTEM_GROUP,
1080                                                    SYSTEM_STATISTICS_CMD),
1081                                            IWL_FW_CMD_VER_UNKNOWN);
1082
1083         if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
1084                 return;
1085
1086         /* From ver 14 and up we use TLV statistics format */
1087         if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1088                                     STATISTICS_NOTIFICATION, 0) >= 14)
1089                 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
1090
1091         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1092                 if (iwl_mvm_has_new_rx_api(mvm))
1093                         expected_size = sizeof(struct iwl_notif_statistics_v11);
1094                 else
1095                         expected_size = sizeof(struct iwl_notif_statistics_v10);
1096         } else {
1097                 expected_size = sizeof(struct iwl_notif_statistics);
1098         }
1099
1100         if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
1101                       "received invalid statistics size (%d)!\n",
1102                       iwl_rx_packet_payload_len(pkt)))
1103                 return;
1104
1105         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1106                 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
1107
1108                 data.mac_id = stats->rx.general.mac_id;
1109                 data.beacon_filter_average_energy =
1110                         stats->general.common.beacon_filter_average_energy;
1111
1112                 mvm->rx_stats_v3 = stats->rx;
1113
1114                 mvm->radio_stats.rx_time =
1115                         le64_to_cpu(stats->general.common.rx_time);
1116                 mvm->radio_stats.tx_time =
1117                         le64_to_cpu(stats->general.common.tx_time);
1118                 mvm->radio_stats.on_time_rf =
1119                         le64_to_cpu(stats->general.common.on_time_rf);
1120                 mvm->radio_stats.on_time_scan =
1121                         le64_to_cpu(stats->general.common.on_time_scan);
1122
1123                 data.beacon_counter = stats->general.beacon_counter;
1124                 data.beacon_average_energy =
1125                         stats->general.beacon_average_energy;
1126                 flags = stats->flag;
1127         } else {
1128                 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1129
1130                 data.mac_id = stats->rx.general.mac_id;
1131                 data.beacon_filter_average_energy =
1132                         stats->general.common.beacon_filter_average_energy;
1133
1134                 mvm->rx_stats = stats->rx;
1135
1136                 mvm->radio_stats.rx_time =
1137                         le64_to_cpu(stats->general.common.rx_time);
1138                 mvm->radio_stats.tx_time =
1139                         le64_to_cpu(stats->general.common.tx_time);
1140                 mvm->radio_stats.on_time_rf =
1141                         le64_to_cpu(stats->general.common.on_time_rf);
1142                 mvm->radio_stats.on_time_scan =
1143                         le64_to_cpu(stats->general.common.on_time_scan);
1144
1145                 data.beacon_counter = stats->general.beacon_counter;
1146                 data.beacon_average_energy =
1147                         stats->general.beacon_average_energy;
1148                 flags = stats->flag;
1149         }
1150         data.flags = flags;
1151
1152         iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1153
1154         ieee80211_iterate_active_interfaces(mvm->hw,
1155                                             IEEE80211_IFACE_ITER_NORMAL,
1156                                             iwl_mvm_stat_iterator,
1157                                             &data);
1158
1159         if (!iwl_mvm_has_new_rx_api(mvm))
1160                 return;
1161
1162         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1163                 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
1164
1165                 energy = (void *)&v11->load_stats.avg_energy;
1166                 bytes = (void *)&v11->load_stats.byte_count;
1167                 air_time = (void *)&v11->load_stats.air_time;
1168         } else {
1169                 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1170
1171                 energy = (void *)&stats->load_stats.avg_energy;
1172                 bytes = (void *)&stats->load_stats.byte_count;
1173                 air_time = (void *)&stats->load_stats.air_time;
1174         }
1175         ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1176                                           energy);
1177
1178         /*
1179          * Don't update in case the statistics are not cleared, since
1180          * we will end up counting twice the same airtime, once in TCM
1181          * request and once in statistics notification.
1182          */
1183         if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1184                 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1185
1186 }
1187
1188 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1189 {
1190         iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1191 }
1192
1193 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1194                                  struct iwl_rx_cmd_buffer *rxb)
1195 {
1196         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1197         struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1198         int i;
1199
1200         BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1201         BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1202         BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1203         BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1204
1205         rcu_read_lock();
1206         for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1207                 struct ieee80211_sta *sta;
1208                 u8 sta_id, tid;
1209                 u64 bitmap;
1210                 u32 ssn;
1211                 u16 ratid;
1212                 u16 received_mpdu;
1213
1214                 ratid = le16_to_cpu(notif->ra_tid[i]);
1215                 /* check that this TID is valid */
1216                 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1217                         continue;
1218
1219                 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1220                 if (received_mpdu == 0)
1221                         continue;
1222
1223                 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1224                 /* get the station */
1225                 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1226                          >> BA_WINDOW_STATUS_STA_ID_POS;
1227                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1228                 if (IS_ERR_OR_NULL(sta))
1229                         continue;
1230                 bitmap = le64_to_cpu(notif->bitmap[i]);
1231                 ssn = le32_to_cpu(notif->start_seq_num[i]);
1232
1233                 /* update mac80211 with the bitmap for the reordering buffer */
1234                 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1235                                                      received_mpdu);
1236         }
1237         rcu_read_unlock();
1238 }