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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
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  46  *    the documentation and/or other materials provided with the
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *****************************************************************************/
  64 #include <linux/skbuff.h>
  65 #include "iwl-trans.h"
  66 #include "mvm.h"
  67 #include "fw-api.h"
  68
  69 /*
  70  * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
  71  *
  72  * Copies the phy information in mvm->last_phy_info, it will be used when the
  73  * actual data will come from the fw in the next packet.
  74  */
  75 void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
  76 {
  77         struct iwl_rx_packet *pkt = rxb_addr(rxb);
  78
  79         memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
  80         mvm->ampdu_ref++;
  81
  82 #ifdef CONFIG_IWLWIFI_DEBUGFS
  83         if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
  84                 spin_lock(&mvm->drv_stats_lock);
  85                 mvm->drv_rx_stats.ampdu_count++;
  86                 spin_unlock(&mvm->drv_stats_lock);
  87         }
  88 #endif
  89 }
  90
  91 /*
  92  * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
  93  *
  94  * Adds the rxb to a new skb and give it to mac80211
  95  */
  96 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
  97                                             struct napi_struct *napi,
  98                                             struct sk_buff *skb,
  99                                             struct ieee80211_hdr *hdr, u16 len,
 100                                             u32 ampdu_status, u8 crypt_len,
 101                                             struct iwl_rx_cmd_buffer *rxb)
 102 {
 103         unsigned int hdrlen, fraglen;
 104
 105         /* If frame is small enough to fit in skb->head, pull it completely.
 106          * If not, only pull ieee80211_hdr (including crypto if present, and
 107          * an additional 8 bytes for SNAP/ethertype, see below) so that
 108          * splice() or TCP coalesce are more efficient.
 109          *
 110          * Since, in addition, ieee80211_data_to_8023() always pull in at
 111          * least 8 bytes (possibly more for mesh) we can do the same here
 112          * to save the cost of doing it later. That still doesn't pull in
 113          * the actual IP header since the typical case has a SNAP header.
 114          * If the latter changes (there are efforts in the standards group
 115          * to do so) we should revisit this and ieee80211_data_to_8023().
 116          */
 117         hdrlen = (len <= skb_tailroom(skb)) ? len :
 118                                               sizeof(*hdr) + crypt_len + 8;
 119
 120         memcpy(skb_put(skb, hdrlen), hdr, hdrlen);
 121         fraglen = len - hdrlen;
 122
 123         if (fraglen) {
 124                 int offset = (void *)hdr + hdrlen -
 125                              rxb_addr(rxb) + rxb_offset(rxb);
 126
 127                 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
 128                                 fraglen, rxb->truesize);
 129         }
 130
 131         ieee80211_rx_napi(mvm->hw, skb, napi);
 132 }
 133
 134 /*
 135  * iwl_mvm_get_signal_strength - use new rx PHY INFO API
 136  * values are reported by the fw as positive values - need to negate
 137  * to obtain their dBM.  Account for missing antennas by replacing 0
 138  * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
 139  */
 140 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
 141                                         struct iwl_rx_phy_info *phy_info,
 142                                         struct ieee80211_rx_status *rx_status)
 143 {
 144         int energy_a, energy_b, energy_c, max_energy;
 145         u32 val;
 146
 147         val =
 148             le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
 149         energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
 150                                                 IWL_RX_INFO_ENERGY_ANT_A_POS;
 151         energy_a = energy_a ? -energy_a : S8_MIN;
 152         energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
 153                                                 IWL_RX_INFO_ENERGY_ANT_B_POS;
 154         energy_b = energy_b ? -energy_b : S8_MIN;
 155         energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >>
 156                                                 IWL_RX_INFO_ENERGY_ANT_C_POS;
 157         energy_c = energy_c ? -energy_c : S8_MIN;
 158         max_energy = max(energy_a, energy_b);
 159         max_energy = max(max_energy, energy_c);
 160
 161         IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n",
 162                         energy_a, energy_b, energy_c, max_energy);
 163
 164         rx_status->signal = max_energy;
 165         rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
 166                                 RX_RES_PHY_FLAGS_ANTENNA)
 167                                         >> RX_RES_PHY_FLAGS_ANTENNA_POS;
 168         rx_status->chain_signal[0] = energy_a;
 169         rx_status->chain_signal[1] = energy_b;
 170         rx_status->chain_signal[2] = energy_c;
 171 }
 172
 173 /*
 174  * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
 175  * @mvm: the mvm object
 176  * @hdr: 80211 header
 177  * @stats: status in mac80211's format
 178  * @rx_pkt_status: status coming from fw
 179  *
 180  * returns non 0 value if the packet should be dropped
 181  */
 182 static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
 183                                         struct ieee80211_hdr *hdr,
 184                                         struct ieee80211_rx_status *stats,
 185                                         u32 rx_pkt_status,
 186                                         u8 *crypt_len)
 187 {
 188         if (!ieee80211_has_protected(hdr->frame_control) ||
 189             (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 190                              RX_MPDU_RES_STATUS_SEC_NO_ENC)
 191                 return 0;
 192
 193         /* packet was encrypted with unknown alg */
 194         if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 195                                         RX_MPDU_RES_STATUS_SEC_ENC_ERR)
 196                 return 0;
 197
 198         switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
 199         case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
 200                 /* alg is CCM: check MIC only */
 201                 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
 202                         return -1;
 203
 204                 stats->flag |= RX_FLAG_DECRYPTED;
 205                 *crypt_len = IEEE80211_CCMP_HDR_LEN;
 206                 return 0;
 207
 208         case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
 209                 /* Don't drop the frame and decrypt it in SW */
 210                 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
 211                         return 0;
 212                 *crypt_len = IEEE80211_TKIP_IV_LEN;
 213                 /* fall through if TTAK OK */
 214
 215         case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
 216                 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
 217                         return -1;
 218
 219                 stats->flag |= RX_FLAG_DECRYPTED;
 220                 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 221                                 RX_MPDU_RES_STATUS_SEC_WEP_ENC)
 222                         *crypt_len = IEEE80211_WEP_IV_LEN;
 223                 return 0;
 224
 225         case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
 226                 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
 227                         return -1;
 228                 stats->flag |= RX_FLAG_DECRYPTED;
 229                 return 0;
 230
 231         default:
 232                 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
 233         }
 234
 235         return 0;
 236 }
 237
 238 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
 239                             struct sk_buff *skb,
 240                             u32 status)
 241 {
 242         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 243         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 244
 245         if (mvmvif->features & NETIF_F_RXCSUM &&
 246             status & RX_MPDU_RES_STATUS_CSUM_DONE &&
 247             status & RX_MPDU_RES_STATUS_CSUM_OK)
 248                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 249 }
 250
 251 /*
 252  * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
 253  *
 254  * Handles the actual data of the Rx packet from the fw
 255  */
 256 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
 257                         struct iwl_rx_cmd_buffer *rxb)
 258 {
 259         struct ieee80211_hdr *hdr;
 260         struct ieee80211_rx_status *rx_status;
 261         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 262         struct iwl_rx_phy_info *phy_info;
 263         struct iwl_rx_mpdu_res_start *rx_res;
 264         struct ieee80211_sta *sta;
 265         struct sk_buff *skb;
 266         u32 len;
 267         u32 ampdu_status;
 268         u32 rate_n_flags;
 269         u32 rx_pkt_status;
 270         u8 crypt_len = 0;
 271
 272         phy_info = &mvm->last_phy_info;
 273         rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
 274         hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
 275         len = le16_to_cpu(rx_res->byte_count);
 276         rx_pkt_status = le32_to_cpup((__le32 *)
 277                 (pkt->data + sizeof(*rx_res) + len));
 278
 279         /* Dont use dev_alloc_skb(), we'll have enough headroom once
 280          * ieee80211_hdr pulled.
 281          */
 282         skb = alloc_skb(128, GFP_ATOMIC);
 283         if (!skb) {
 284                 IWL_ERR(mvm, "alloc_skb failed\n");
 285                 return;
 286         }
 287
 288         rx_status = IEEE80211_SKB_RXCB(skb);
 289
 290         /*
 291          * drop the packet if it has failed being decrypted by HW
 292          */
 293         if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
 294                                          &crypt_len)) {
 295                 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
 296                                rx_pkt_status);
 297                 kfree_skb(skb);
 298                 return;
 299         }
 300
 301         /*
 302          * Keep packets with CRC errors (and with overrun) for monitor mode
 303          * (otherwise the firmware discards them) but mark them as bad.
 304          */
 305         if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
 306             !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
 307                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
 308                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 309         }
 310
 311         /* This will be used in several places later */
 312         rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
 313
 314         /* rx_status carries information about the packet to mac80211 */
 315         rx_status->mactime = le64_to_cpu(phy_info->timestamp);
 316         rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
 317         rx_status->band =
 318                 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
 319                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 320         rx_status->freq =
 321                 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
 322                                                rx_status->band);
 323         /*
 324          * TSF as indicated by the fw is at INA time, but mac80211 expects the
 325          * TSF at the beginning of the MPDU.
 326          */
 327         /*rx_status->flag |= RX_FLAG_MACTIME_MPDU;*/
 328
 329         iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
 330
 331         IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
 332                               (unsigned long long)rx_status->mactime);
 333
 334         rcu_read_lock();
 335         /*
 336          * We have tx blocked stations (with CS bit). If we heard frames from
 337          * a blocked station on a new channel we can TX to it again.
 338          */
 339         if (unlikely(mvm->csa_tx_block_bcn_timeout)) {
 340                 sta = ieee80211_find_sta(
 341                         rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2);
 342                 if (sta)
 343                         iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false);
 344         }
 345
 346         /* This is fine since we don't support multiple AP interfaces */
 347         sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
 348         if (sta) {
 349                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 350
 351                 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status);
 352
 353                 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
 354                     ieee80211_is_beacon(hdr->frame_control)) {
 355                         struct iwl_fw_dbg_trigger_tlv *trig;
 356                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
 357                         bool trig_check;
 358                         s32 rssi;
 359
 360                         trig = iwl_fw_dbg_get_trigger(mvm->fw,
 361                                                       FW_DBG_TRIGGER_RSSI);
 362                         rssi_trig = (void *)trig->data;
 363                         rssi = le32_to_cpu(rssi_trig->rssi);
 364
 365                         trig_check =
 366                                 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif,
 367                                                               trig);
 368                         if (trig_check && rx_status->signal < rssi)
 369                                 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL);
 370                 }
 371         }
 372
 373         if (sta && ieee80211_is_data(hdr->frame_control))
 374                 iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
 375
 376         rcu_read_unlock();
 377
 378         /* set the preamble flag if appropriate */
 379         if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
 380                 rx_status->flag |= RX_FLAG_SHORTPRE;
 381
 382         if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
 383                 /*
 384                  * We know which subframes of an A-MPDU belong
 385                  * together since we get a single PHY response
 386                  * from the firmware for all of them
 387                  */
 388                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
 389                 rx_status->ampdu_reference = mvm->ampdu_ref;
 390         }
 391
 392         /* Set up the HT phy flags */
 393         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
 394         case RATE_MCS_CHAN_WIDTH_20:
 395                 break;
 396         case RATE_MCS_CHAN_WIDTH_40:
 397                 rx_status->flag |= RX_FLAG_40MHZ;
 398                 break;
 399         case RATE_MCS_CHAN_WIDTH_80:
 400                 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ;
 401                 break;
 402         case RATE_MCS_CHAN_WIDTH_160:
 403                 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ;
 404                 break;
 405         }
 406         if (rate_n_flags & RATE_MCS_SGI_MSK)
 407                 rx_status->flag |= RX_FLAG_SHORT_GI;
 408         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
 409                 rx_status->flag |= RX_FLAG_HT_GF;
 410         if (rate_n_flags & RATE_MCS_LDPC_MSK)
 411                 rx_status->flag |= RX_FLAG_LDPC;
 412         if (rate_n_flags & RATE_MCS_HT_MSK) {
 413                 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
 414                                 RATE_MCS_STBC_POS;
 415                 rx_status->flag |= RX_FLAG_HT;
 416                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
 417                 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
 418         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
 419                 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
 420                                 RATE_MCS_STBC_POS;
 421                 rx_status->vht_nss =
 422                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
 423                                                 RATE_VHT_MCS_NSS_POS) + 1;
 424                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
 425                 rx_status->flag |= RX_FLAG_VHT;
 426                 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
 427                 if (rate_n_flags & RATE_MCS_BF_MSK)
 428                         rx_status->vht_flag |= RX_VHT_FLAG_BF;
 429         } else {
 430                 rx_status->rate_idx =
 431                         iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
 432                                                             rx_status->band);
 433         }
 434
 435 #ifdef CONFIG_IWLWIFI_DEBUGFS
 436         iwl_mvm_update_frame_stats(mvm, rate_n_flags,
 437                                    rx_status->flag & RX_FLAG_AMPDU_DETAILS);
 438 #endif
 439         iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, hdr, len, ampdu_status,
 440                                         crypt_len, rxb);
 441 }
 442
 443 static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm,
 444                                          struct mvm_statistics_rx *rx_stats)
 445 {
 446         lockdep_assert_held(&mvm->mutex);
 447
 448         mvm->rx_stats = *rx_stats;
 449 }
 450
 451 struct iwl_mvm_stat_data {
 452         struct iwl_mvm *mvm;
 453         __le32 mac_id;
 454         u8 beacon_filter_average_energy;
 455         struct mvm_statistics_general_v8 *general;
 456 };
 457
 458 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
 459                                   struct ieee80211_vif *vif)
 460 {
 461         struct iwl_mvm_stat_data *data = _data;
 462         struct iwl_mvm *mvm = data->mvm;
 463         int sig = -data->beacon_filter_average_energy;
 464         int last_event;
 465         int thold = vif->bss_conf.cqm_rssi_thold;
 466         int hyst = vif->bss_conf.cqm_rssi_hyst;
 467         u16 id = le32_to_cpu(data->mac_id);
 468         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 469
 470         /* This doesn't need the MAC ID check since it's not taking the
 471          * data copied into the "data" struct, but rather the data from
 472          * the notification directly.
 473          */
 474         if (data->general) {
 475                 mvmvif->beacon_stats.num_beacons =
 476                         le32_to_cpu(data->general->beacon_counter[mvmvif->id]);
 477                 mvmvif->beacon_stats.avg_signal =
 478                         -data->general->beacon_average_energy[mvmvif->id];
 479         }
 480
 481         if (mvmvif->id != id)
 482                 return;
 483
 484         if (vif->type != NL80211_IFTYPE_STATION)
 485                 return;
 486
 487         if (sig == 0) {
 488                 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
 489                 return;
 490         }
 491
 492         mvmvif->bf_data.ave_beacon_signal = sig;
 493
 494         /* BT Coex */
 495         if (mvmvif->bf_data.bt_coex_min_thold !=
 496             mvmvif->bf_data.bt_coex_max_thold) {
 497                 last_event = mvmvif->bf_data.last_bt_coex_event;
 498                 if (sig > mvmvif->bf_data.bt_coex_max_thold &&
 499                     (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
 500                      last_event == 0)) {
 501                         mvmvif->bf_data.last_bt_coex_event = sig;
 502                         IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
 503                                      sig);
 504                         iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
 505                 } else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
 506                            (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
 507                             last_event == 0)) {
 508                         mvmvif->bf_data.last_bt_coex_event = sig;
 509                         IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
 510                                      sig);
 511                         iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
 512                 }
 513         }
 514
 515         if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
 516                 return;
 517
 518         /* CQM Notification */
 519         last_event = mvmvif->bf_data.last_cqm_event;
 520         if (thold && sig < thold && (last_event == 0 ||
 521                                      sig < last_event - hyst)) {
 522                 mvmvif->bf_data.last_cqm_event = sig;
 523                 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
 524                              sig);
 525                 ieee80211_cqm_rssi_notify(
 526                         vif,
 527                         NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
 528                         GFP_KERNEL);
 529         } else if (sig > thold &&
 530                    (last_event == 0 || sig > last_event + hyst)) {
 531                 mvmvif->bf_data.last_cqm_event = sig;
 532                 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
 533                              sig);
 534                 ieee80211_cqm_rssi_notify(
 535                         vif,
 536                         NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
 537                         GFP_KERNEL);
 538         }
 539 }
 540
 541 static inline void
 542 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
 543 {
 544         struct iwl_fw_dbg_trigger_tlv *trig;
 545         struct iwl_fw_dbg_trigger_stats *trig_stats;
 546         u32 trig_offset, trig_thold;
 547
 548         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS))
 549                 return;
 550
 551         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS);
 552         trig_stats = (void *)trig->data;
 553
 554         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 555                 return;
 556
 557         trig_offset = le32_to_cpu(trig_stats->stop_offset);
 558         trig_thold = le32_to_cpu(trig_stats->stop_threshold);
 559
 560         if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
 561                 return;
 562
 563         if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
 564                 return;
 565
 566         iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL);
 567 }
 568
 569 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
 570                                   struct iwl_rx_packet *pkt)
 571 {
 572         struct iwl_notif_statistics_v10 *stats = (void *)&pkt->data;
 573         struct iwl_mvm_stat_data data = {
 574                 .mvm = mvm,
 575         };
 576         u32 temperature;
 577
 578         if (iwl_rx_packet_payload_len(pkt) != sizeof(*stats))
 579                 goto invalid;
 580
 581         temperature = le32_to_cpu(stats->general.radio_temperature);
 582         data.mac_id = stats->rx.general.mac_id;
 583         data.beacon_filter_average_energy =
 584                 stats->general.beacon_filter_average_energy;
 585
 586         iwl_mvm_update_rx_statistics(mvm, &stats->rx);
 587
 588         mvm->radio_stats.rx_time = le64_to_cpu(stats->general.rx_time);
 589         mvm->radio_stats.tx_time = le64_to_cpu(stats->general.tx_time);
 590         mvm->radio_stats.on_time_rf =
 591                 le64_to_cpu(stats->general.on_time_rf);
 592         mvm->radio_stats.on_time_scan =
 593                 le64_to_cpu(stats->general.on_time_scan);
 594
 595         data.general = &stats->general;
 596
 597         iwl_mvm_rx_stats_check_trigger(mvm, pkt);
 598
 599         ieee80211_iterate_active_interfaces(mvm->hw,
 600                                             IEEE80211_IFACE_ITER_NORMAL,
 601                                             iwl_mvm_stat_iterator,
 602                                             &data);
 603         return;
 604  invalid:
 605         IWL_ERR(mvm, "received invalid statistics size (%d)!\n",
 606                 iwl_rx_packet_payload_len(pkt));
 607 }
 608
 609 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 610 {
 611         iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
 612 }