// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 * Copyright (C) 2016-2017 Intel Deutschland GmbH
 */
#include <linux/unaligned.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"

/*
 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
 *
 * Copies the phy information in mvm->last_phy_info, it will be used when the
 * actual data will come from the fw in the next packet.
 */
void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);

        if (unlikely(pkt_len < sizeof(mvm->last_phy_info)))
                return;

        memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
        mvm->ampdu_ref++;

#ifdef CONFIG_IWLWIFI_DEBUGFS
        if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
                spin_lock(&mvm->drv_stats_lock);
                mvm->drv_rx_stats.ampdu_count++;
                spin_unlock(&mvm->drv_stats_lock);
        }
#endif
}

/*
 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
 *
 * Adds the rxb to a new skb and give it to mac80211
 */
static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
                                            struct ieee80211_sta *sta,
                                            struct napi_struct *napi,
                                            struct sk_buff *skb,
                                            struct ieee80211_hdr *hdr, u16 len,
                                            u8 crypt_len,
                                            struct iwl_rx_cmd_buffer *rxb)
{
        unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
        unsigned int fraglen;

        /*
         * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len,
         * but those are all multiples of 4 long) all goes away, but we
         * want the *end* of it, which is going to be the start of the IP
         * header, to be aligned when it gets pulled in.
         * The beginning of the skb->data is aligned on at least a 4-byte
         * boundary after allocation. Everything here is aligned at least
         * on a 2-byte boundary so we can just take hdrlen & 3 and pad by
         * the result.
         */
        skb_reserve(skb, hdrlen & 3);

        /* If frame is small enough to fit in skb->head, pull it completely.
         * If not, only pull ieee80211_hdr (including crypto if present, and
         * an additional 8 bytes for SNAP/ethertype, see below) so that
         * splice() or TCP coalesce are more efficient.
         *
         * Since, in addition, ieee80211_data_to_8023() always pull in at
         * least 8 bytes (possibly more for mesh) we can do the same here
         * to save the cost of doing it later. That still doesn't pull in
         * the actual IP header since the typical case has a SNAP header.
         * If the latter changes (there are efforts in the standards group
         * to do so) we should revisit this and ieee80211_data_to_8023().
         */
        hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8;

        skb_put_data(skb, hdr, hdrlen);
        fraglen = len - hdrlen;

        if (fraglen) {
                int offset = (u8 *)hdr + hdrlen -
                             (u8 *)rxb_addr(rxb) + rxb_offset(rxb);

                skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
                                fraglen, rxb->truesize);
        }

        ieee80211_rx_napi(mvm->hw, sta, skb, napi);
}

/*
 * iwl_mvm_get_signal_strength - use new rx PHY INFO API
 * values are reported by the fw as positive values - need to negate
 * to obtain their dBM.  Account for missing antennas by replacing 0
 * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
 */
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
                                        struct iwl_rx_phy_info *phy_info,
                                        struct ieee80211_rx_status *rx_status)
{
        int energy_a, energy_b, max_energy;
        u32 val;

        val =
            le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
        energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
                                                IWL_RX_INFO_ENERGY_ANT_A_POS;
        energy_a = energy_a ? -energy_a : S8_MIN;
        energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
                                                IWL_RX_INFO_ENERGY_ANT_B_POS;
        energy_b = energy_b ? -energy_b : S8_MIN;
        max_energy = max(energy_a, energy_b);

        IWL_DEBUG_STATS(mvm, "energy In A %d B %d  , and max %d\n",
                        energy_a, energy_b, max_energy);

        rx_status->signal = max_energy;
        rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
                                RX_RES_PHY_FLAGS_ANTENNA)
                                        >> RX_RES_PHY_FLAGS_ANTENNA_POS;
        rx_status->chain_signal[0] = energy_a;
        rx_status->chain_signal[1] = energy_b;
}

/*
 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
 * @mvm: the mvm object
 * @hdr: 80211 header
 * @stats: status in mac80211's format
 * @rx_pkt_status: status coming from fw
 *
 * returns non 0 value if the packet should be dropped
 */
static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
                                        struct ieee80211_hdr *hdr,
                                        struct ieee80211_rx_status *stats,
                                        u32 rx_pkt_status,
                                        u8 *crypt_len)
{
        if (!ieee80211_has_protected(hdr->frame_control) ||
            (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
                             RX_MPDU_RES_STATUS_SEC_NO_ENC)
                return 0;

        /* packet was encrypted with unknown alg */
        if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
                                        RX_MPDU_RES_STATUS_SEC_ENC_ERR)
                return 0;

        switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
        case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
                /* alg is CCM: check MIC only */
                if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
                        return -1;

                stats->flag |= RX_FLAG_DECRYPTED;
                *crypt_len = IEEE80211_CCMP_HDR_LEN;
                return 0;

        case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
                /* Don't drop the frame and decrypt it in SW */
                if (!fw_has_api(&mvm->fw->ucode_capa,
                                IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
                    !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
                        return 0;
                *crypt_len = IEEE80211_TKIP_IV_LEN;
                fallthrough;

        case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
                if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
                        return -1;

                stats->flag |= RX_FLAG_DECRYPTED;
                if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
                                RX_MPDU_RES_STATUS_SEC_WEP_ENC)
                        *crypt_len = IEEE80211_WEP_IV_LEN;
                return 0;

        case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
                if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
                        return -1;
                stats->flag |= RX_FLAG_DECRYPTED;
                return 0;

        default:
                /* Expected in monitor (not having the keys) */
                if (!mvm->monitor_on)
                        IWL_WARN(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
        }

        return 0;
}

static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
                                  struct ieee80211_sta *sta,
                                  struct ieee80211_hdr *hdr, u32 len,
                                  struct iwl_rx_phy_info *phy_info,
                                  u32 rate_n_flags)
{
        struct iwl_mvm_sta *mvmsta;
        struct iwl_mvm_tcm_mac *mdata;
        int mac;
        int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
        struct iwl_mvm_vif *mvmvif;
        /* expected throughput in 100Kbps, single stream, 20 MHz */
        static const u8 thresh_tpt[] = {
                9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
        };
        u16 thr;

        if (ieee80211_is_data_qos(hdr->frame_control)) {
                u8 tid = ieee80211_get_tid(hdr);

                if (tid < IWL_MAX_TID_COUNT)
                        ac = tid_to_mac80211_ac[tid];
        }

        mvmsta = iwl_mvm_sta_from_mac80211(sta);
        mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;

        if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
                schedule_delayed_work(&mvm->tcm.work, 0);
        mdata = &mvm->tcm.data[mac];
        mdata->rx.pkts[ac]++;

        /* count the airtime only once for each ampdu */
        if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
                mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
                mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
        }

        if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
                return;

        mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);

        if (mdata->opened_rx_ba_sessions ||
            mdata->uapsd_nonagg_detect.detected ||
            (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
             !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
             !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
             !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) ||
            mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id)
                return;

        if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
                thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
                thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
                                        RATE_HT_MCS_NSS_POS_V1);
        } else {
                if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
                                ARRAY_SIZE(thresh_tpt)))
                        return;
                thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
                thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags);
        }

        thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
                                RATE_MCS_CHAN_WIDTH_POS);

        mdata->uapsd_nonagg_detect.rx_bytes += len;
        ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
}

static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
                            struct sk_buff *skb,
                            u32 status)
{
        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);

        if (mvmvif->features & NETIF_F_RXCSUM &&
            status & RX_MPDU_RES_STATUS_CSUM_DONE &&
            status & RX_MPDU_RES_STATUS_CSUM_OK)
                skb->ip_summed = CHECKSUM_UNNECESSARY;
}

/*
 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
 *
 * Handles the actual data of the Rx packet from the fw
 */
void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
                        struct iwl_rx_cmd_buffer *rxb)
{
        struct ieee80211_hdr *hdr;
        struct ieee80211_rx_status *rx_status;
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_rx_phy_info *phy_info;
        struct iwl_rx_mpdu_res_start *rx_res;
        struct ieee80211_sta *sta = NULL;
        struct sk_buff *skb;
        u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
        u32 rate_n_flags;
        u32 rx_pkt_status;
        u8 crypt_len = 0;

        if (unlikely(pkt_len < sizeof(*rx_res))) {
                IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
                return;
        }

        phy_info = &mvm->last_phy_info;
        rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
        hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
        len = le16_to_cpu(rx_res->byte_count);

        if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
                IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
                return;
        }

        rx_pkt_status = get_unaligned_le32((__le32 *)
                (pkt->data + sizeof(*rx_res) + len));

        /* Dont use dev_alloc_skb(), we'll have enough headroom once
         * ieee80211_hdr pulled.
         */
        skb = alloc_skb(128, GFP_ATOMIC);
        if (!skb) {
                IWL_ERR(mvm, "alloc_skb failed\n");
                return;
        }

        rx_status = IEEE80211_SKB_RXCB(skb);

        /*
         * Keep packets with CRC errors (and with overrun) for monitor mode
         * (otherwise the firmware discards them) but mark them as bad.
         */
        if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
            !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
                IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
                rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
        }

        /* This will be used in several places later */
        rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);

        /* rx_status carries information about the packet to mac80211 */
        rx_status->mactime = le64_to_cpu(phy_info->timestamp);
        rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
        rx_status->band =
                (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
                                NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
        rx_status->freq =
                ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
                                               rx_status->band);

        /* TSF as indicated by the firmware  is at INA time */
        rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;

        iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);

        IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
                              (unsigned long long)rx_status->mactime);

        rcu_read_lock();
        if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
                u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;

                id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;

                if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
                        sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
                        if (IS_ERR(sta))
                                sta = NULL;
                }
        } else if (!is_multicast_ether_addr(hdr->addr2)) {
                /* This is fine since we prevent two stations with the same
                 * address from being added.
                 */
                sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
        }

        if (sta) {
                struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
                struct ieee80211_vif *vif = mvmsta->vif;
                struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

                /*
                 * Don't even try to decrypt a MCAST frame that was received
                 * before the managed vif is authorized, we'd fail anyway.
                 */
                if (is_multicast_ether_addr(hdr->addr1) &&
                    vif->type == NL80211_IFTYPE_STATION &&
                    !mvmvif->authorized &&
                    ieee80211_has_protected(hdr->frame_control)) {
                        IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
                        kfree_skb(skb);
                        rcu_read_unlock();
                        return;
                }
        }

        /*
         * drop the packet if it has failed being decrypted by HW
         */
        if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
                                         &crypt_len)) {
                IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
                               rx_pkt_status);
                kfree_skb(skb);
                rcu_read_unlock();
                return;
        }

        if (sta) {
                struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
                struct ieee80211_vif *tx_blocked_vif =
                        rcu_dereference(mvm->csa_tx_blocked_vif);
                struct iwl_fw_dbg_trigger_tlv *trig;
                struct ieee80211_vif *vif = mvmsta->vif;

                /* We have tx blocked stations (with CS bit). If we heard
                 * frames from a blocked station on a new channel we can
                 * TX to it again.
                 */
                if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
                        struct iwl_mvm_vif *mvmvif =
                                iwl_mvm_vif_from_mac80211(tx_blocked_vif);

                        if (mvmvif->csa_target_freq == rx_status->freq)
                                iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
                                                                 false);
                }

                rs_update_last_rssi(mvm, mvmsta, rx_status);

                trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
                                             ieee80211_vif_to_wdev(vif),
                                             FW_DBG_TRIGGER_RSSI);

                if (trig && ieee80211_is_beacon(hdr->frame_control)) {
                        struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
                        s32 rssi;

                        rssi_trig = (void *)trig->data;
                        rssi = le32_to_cpu(rssi_trig->rssi);

                        if (rx_status->signal < rssi)
                                iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
                                                        NULL);
                }

                if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
                    !is_multicast_ether_addr(hdr->addr1) &&
                    ieee80211_is_data(hdr->frame_control))
                        iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
                                              rate_n_flags);

                if (ieee80211_is_data(hdr->frame_control))
                        iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
        }
        rcu_read_unlock();

        /* set the preamble flag if appropriate */
        if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
                rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;

        if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
                /*
                 * We know which subframes of an A-MPDU belong
                 * together since we get a single PHY response
                 * from the firmware for all of them
                 */
                rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
                rx_status->ampdu_reference = mvm->ampdu_ref;
        }

        /* Set up the HT phy flags */
        switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
        case RATE_MCS_CHAN_WIDTH_20:
                break;
        case RATE_MCS_CHAN_WIDTH_40:
                rx_status->bw = RATE_INFO_BW_40;
                break;
        case RATE_MCS_CHAN_WIDTH_80:
                rx_status->bw = RATE_INFO_BW_80;
                break;
        case RATE_MCS_CHAN_WIDTH_160:
                rx_status->bw = RATE_INFO_BW_160;
                break;
        }
        if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
            rate_n_flags & RATE_MCS_SGI_MSK_V1)
                rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
        if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
                rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
        if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                                RATE_MCS_STBC_POS;
                rx_status->encoding = RX_ENC_HT;
                rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
                rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
        } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                                RATE_MCS_STBC_POS;
                rx_status->nss =
                        FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1;
                rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
                rx_status->encoding = RX_ENC_VHT;
                rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
                if (rate_n_flags & RATE_MCS_BF_MSK)
                        rx_status->enc_flags |= RX_ENC_FLAG_BF;
        } else {
                int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
                                                               rx_status->band);

                if (WARN(rate < 0 || rate > 0xFF,
                         "Invalid rate flags 0x%x, band %d,\n",
                         rate_n_flags, rx_status->band)) {
                        kfree_skb(skb);
                        return;
                }
                rx_status->rate_idx = rate;
                /* override BW - it could be DUP and indicate the wrong BW */
                rx_status->bw = RATE_INFO_BW_20;
        }

#ifdef CONFIG_IWLWIFI_DEBUGFS
        iwl_mvm_update_frame_stats(mvm, rate_n_flags,
                                   rx_status->flag & RX_FLAG_AMPDU_DETAILS);
#endif

        if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
                      ieee80211_is_probe_resp(hdr->frame_control)) &&
                     mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
                mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;

        if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
                     ieee80211_is_probe_resp(hdr->frame_control)))
                rx_status->boottime_ns = ktime_get_boottime_ns();

        iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
                                        crypt_len, rxb);
}

struct iwl_mvm_stat_data {
        struct iwl_mvm *mvm;
        __le32 flags;
        __le32 mac_id;
        u8 beacon_filter_average_energy;
        __le32 *beacon_counter;
        u8 *beacon_average_energy;
};

struct iwl_mvm_stat_data_all_macs {
        struct iwl_mvm *mvm;
        __le32 flags;
        struct iwl_stats_ntfy_per_mac *per_mac;
};

static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig,
                                    struct iwl_mvm_vif_link_info *link_info,
                                    struct ieee80211_bss_conf *bss_conf)
{
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
        struct iwl_mvm *mvm = mvmvif->mvm;
        int thold = bss_conf->cqm_rssi_thold;
        int hyst = bss_conf->cqm_rssi_hyst;
        int last_event;

        if (sig == 0) {
                IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
                return;
        }

        link_info->bf_data.ave_beacon_signal = sig;

        /* BT Coex */
        if (link_info->bf_data.bt_coex_min_thold !=
            link_info->bf_data.bt_coex_max_thold) {
                last_event = link_info->bf_data.last_bt_coex_event;
                if (sig > link_info->bf_data.bt_coex_max_thold &&
                    (last_event <= link_info->bf_data.bt_coex_min_thold ||
                     last_event == 0)) {
                        link_info->bf_data.last_bt_coex_event = sig;
                        IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
                                     sig);
                        iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
                } else if (sig < link_info->bf_data.bt_coex_min_thold &&
                           (last_event >= link_info->bf_data.bt_coex_max_thold ||
                            last_event == 0)) {
                        link_info->bf_data.last_bt_coex_event = sig;
                        IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
                                     sig);
                        iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
                }
        }

        if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
                return;

        /* CQM Notification */
        last_event = link_info->bf_data.last_cqm_event;
        if (thold && sig < thold && (last_event == 0 ||
                                     sig < last_event - hyst)) {
                link_info->bf_data.last_cqm_event = sig;
                IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
                             sig);
                ieee80211_cqm_rssi_notify(
                        vif,
                        NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
                        sig,
                        GFP_KERNEL);
        } else if (sig > thold &&
                   (last_event == 0 || sig > last_event + hyst)) {
                link_info->bf_data.last_cqm_event = sig;
                IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
                             sig);
                ieee80211_cqm_rssi_notify(
                        vif,
                        NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
                        sig,
                        GFP_KERNEL);
        }
}

static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
                                  struct ieee80211_vif *vif)
{
        struct iwl_mvm_stat_data *data = _data;
        int sig = -data->beacon_filter_average_energy;
        u16 id = le32_to_cpu(data->mac_id);
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
        u16 vif_id = mvmvif->id;

        /* This doesn't need the MAC ID check since it's not taking the
         * data copied into the "data" struct, but rather the data from
         * the notification directly.
         */
        mvmvif->deflink.beacon_stats.num_beacons =
                le32_to_cpu(data->beacon_counter[vif_id]);
        mvmvif->deflink.beacon_stats.avg_signal =
                -data->beacon_average_energy[vif_id];

        if (mvmvif->id != id)
                return;

        if (vif->type != NL80211_IFTYPE_STATION)
                return;

        /* make sure that beacon statistics don't go backwards with TCM
         * request to clear statistics
         */
        if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
                mvmvif->deflink.beacon_stats.accu_num_beacons +=
                        mvmvif->deflink.beacon_stats.num_beacons;

        /* This is used in pre-MLO API so use deflink */
        iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
}

static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
                                           struct ieee80211_vif *vif)
{
        struct iwl_mvm_stat_data_all_macs *data = _data;
        struct iwl_stats_ntfy_per_mac *mac_stats;
        int sig;
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
        u16 vif_id = mvmvif->id;

        if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
                return;

        if (vif->type != NL80211_IFTYPE_STATION)
                return;

        mac_stats = &data->per_mac[vif_id];

        mvmvif->deflink.beacon_stats.num_beacons =
                le32_to_cpu(mac_stats->beacon_counter);
        mvmvif->deflink.beacon_stats.avg_signal =
                -le32_to_cpu(mac_stats->beacon_average_energy);

        /* make sure that beacon statistics don't go backwards with TCM
         * request to clear statistics
         */
        if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
                mvmvif->deflink.beacon_stats.accu_num_beacons +=
                        mvmvif->deflink.beacon_stats.num_beacons;

        sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);

        /* This is used in pre-MLO API so use deflink */
        iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
}

static inline void
iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
{
        struct iwl_fw_dbg_trigger_tlv *trig;
        struct iwl_fw_dbg_trigger_stats *trig_stats;
        u32 trig_offset, trig_thold;

        trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
        if (!trig)
                return;

        trig_stats = (void *)trig->data;

        trig_offset = le32_to_cpu(trig_stats->stop_offset);
        trig_thold = le32_to_cpu(trig_stats->stop_threshold);

        if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
                return;

        if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
                return;

        iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
}

static void iwl_mvm_stats_energy_iter(void *_data,
                                      struct ieee80211_sta *sta)
{
        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
        u8 *energy = _data;
        u32 sta_id = mvmsta->deflink.sta_id;

        if (WARN_ONCE(sta_id >= IWL_STATION_COUNT_MAX, "sta_id %d >= %d",
                      sta_id, IWL_STATION_COUNT_MAX))
                return;

        if (energy[sta_id])
                mvmsta->deflink.avg_energy = energy[sta_id];

}

static void
iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
                              __le32 *rx_bytes_le)
{
        int i;

        spin_lock(&mvm->tcm.lock);
        for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
                struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
                u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
                u32 airtime = le32_to_cpu(air_time_le[i]);

                mdata->rx.airtime += airtime;
                mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
                if (airtime) {
                        /* re-init every time to store rate from FW */
                        ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
                        ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
                                      rx_bytes * 8 / airtime);
                }
        }
        spin_unlock(&mvm->tcm.lock);
}

static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
                                         struct iwl_stats_ntfy_per_phy *per_phy)
{
        int i;

        for (i = 0; i < NUM_PHY_CTX; i++) {
                if (!mvm->phy_ctxts[i].ref)
                        continue;
                mvm->phy_ctxts[i].channel_load_by_us =
                        le32_to_cpu(per_phy[i].channel_load_by_us);
                mvm->phy_ctxts[i].channel_load_not_by_us =
                        le32_to_cpu(per_phy[i].channel_load_not_by_us);
        }
}

static void
iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
                     struct iwl_statistics_operational_ntfy *stats)
{
        struct iwl_mvm_stat_data_all_macs data = {
                .mvm = mvm,
                .flags = stats->flags,
                .per_mac = stats->per_mac,
        };

        ieee80211_iterate_active_interfaces(mvm->hw,
                                            IEEE80211_IFACE_ITER_NORMAL,
                                            iwl_mvm_stat_iterator_all_macs,
                                            &data);
        iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
}

static void
iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
                     struct iwl_statistics_operational_ntfy_ver_14 *stats)
{
        struct iwl_mvm_stat_data data = {
                .mvm = mvm,
        };

        u8 beacon_average_energy[MAC_INDEX_AUX];
        __le32 flags;
        int i;

        flags = stats->flags;

        data.mac_id = stats->mac_id;
        data.beacon_filter_average_energy =
                le32_to_cpu(stats->beacon_filter_average_energy);
        data.flags = flags;
        data.beacon_counter = stats->beacon_counter;

        for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
                beacon_average_energy[i] =
                        le32_to_cpu(stats->beacon_average_energy[i]);

        data.beacon_average_energy = beacon_average_energy;

        ieee80211_iterate_active_interfaces(mvm->hw,
                                            IEEE80211_IFACE_ITER_NORMAL,
                                            iwl_mvm_stat_iterator,
                                            &data);
}

static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
                                     struct iwl_rx_packet *pkt,
                                     u32 expected_size)
{
        struct iwl_statistics_ntfy_hdr *hdr;

        if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
                      "received invalid statistics size (%d)!, expected_size: %d\n",
                      iwl_rx_packet_payload_len(pkt), expected_size))
                return false;

        hdr = (void *)&pkt->data;

        if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
                      hdr->version !=
                      iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
                      "received unsupported hdr type %d, version %d\n",
                      hdr->type, hdr->version))
                return false;

        if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
                      "received invalid statistics size in header (%d)!, expected_size: %d\n",
                      le16_to_cpu(hdr->size), expected_size))
                return false;

        return true;
}

static void
iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm,
                                struct iwl_stats_ntfy_per_link *per_link)
{
        u32 air_time[MAC_INDEX_AUX] = {};
        u32 rx_bytes[MAC_INDEX_AUX] = {};
        int fw_link_id;

        /* driver uses link ID == MAC ID */
        for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->vif_id_to_mac);
             fw_link_id++) {
                struct iwl_stats_ntfy_per_link *link_stats;
                struct iwl_mvm_vif_link_info *link_info;
                struct iwl_mvm_vif *mvmvif;
                struct ieee80211_vif *vif;
                int link_id;
                int sig;

                vif = iwl_mvm_rcu_dereference_vif_id(mvm, fw_link_id, false);
                if (!vif)
                        continue;

                if (vif->type != NL80211_IFTYPE_STATION)
                        continue;

                link_id = vif->bss_conf.link_id;
                if (link_id >= ARRAY_SIZE(mvmvif->link))
                        continue;

                mvmvif = iwl_mvm_vif_from_mac80211(vif);
                link_info = mvmvif->link[link_id];
                if (!link_info)
                        continue;

                link_stats = &per_link[fw_link_id];

                link_info->beacon_stats.num_beacons =
                        le32_to_cpu(link_stats->beacon_counter);

                /* we basically just use the u8 to store 8 bits and then treat
                 * it as a s8 whenever we take it out to a different type.
                 */
                link_info->beacon_stats.avg_signal =
                        -le32_to_cpu(link_stats->beacon_average_energy);

                /* make sure that beacon statistics don't go backwards with TCM
                 * request to clear statistics
                 */
                if (mvm->statistics_clear)
                        mvmvif->link[link_id]->beacon_stats.accu_num_beacons +=
                                mvmvif->link[link_id]->beacon_stats.num_beacons;

                sig = -le32_to_cpu(link_stats->beacon_filter_average_energy);
                iwl_mvm_update_link_sig(vif, sig, link_info, &vif->bss_conf);

                if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX,
                              "invalid mvmvif id: %d", mvmvif->id))
                        continue;

                air_time[mvmvif->id] +=
                        le32_to_cpu(per_link[fw_link_id].air_time);
                rx_bytes[mvmvif->id] +=
                        le32_to_cpu(per_link[fw_link_id].rx_bytes);
        }

        /* Don't update in case the statistics are not cleared, since
         * we will end up counting twice the same airtime, once in TCM
         * request and once in statistics notification.
         */
        if (mvm->statistics_clear) {
                __le32 air_time_le[MAC_INDEX_AUX];
                __le32 rx_bytes_le[MAC_INDEX_AUX];
                int vif_id;

                for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) {
                        air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]);
                        rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]);
                }

                iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le);
        }
}

void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
                                         struct iwl_rx_cmd_buffer *rxb)
{
        u8 average_energy[IWL_STATION_COUNT_MAX];
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_system_statistics_notif_oper *stats;
        int i;
        u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
                                                STATISTICS_OPER_NOTIF, 0);

        if (notif_ver != 3) {
                IWL_FW_CHECK_FAILED(mvm,
                                    "Oper stats notif ver %d is not supported\n",
                                    notif_ver);
                return;
        }

        stats = (void *)&pkt->data;
        iwl_mvm_stat_iterator_all_links(mvm, stats->per_link);

        for (i = 0; i < ARRAY_SIZE(average_energy); i++)
                average_energy[i] =
                        le32_to_cpu(stats->per_sta[i].average_energy);

        ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
                                          average_energy);
        iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
}

void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,
                                               struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_system_statistics_part1_notif_oper *part1_stats;
        int i;
        u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
                                                STATISTICS_OPER_PART1_NOTIF, 0);

        if (notif_ver != 4) {
                IWL_FW_CHECK_FAILED(mvm,
                                    "Part1 stats notif ver %d is not supported\n",
                                    notif_ver);
                return;
        }

        part1_stats = (void *)&pkt->data;
        mvm->radio_stats.rx_time = 0;
        mvm->radio_stats.tx_time = 0;
        for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) {
                mvm->radio_stats.rx_time +=
                        le64_to_cpu(part1_stats->per_link[i].rx_time);
                mvm->radio_stats.tx_time +=
                        le64_to_cpu(part1_stats->per_link[i].tx_time);
        }
}

static void
iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
                                 struct iwl_rx_packet *pkt)
{
        u8 average_energy[IWL_STATION_COUNT_MAX];
        __le32 air_time[MAC_INDEX_AUX];
        __le32 rx_bytes[MAC_INDEX_AUX];
        __le32 flags = 0;
        int i;
        u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
                                              STATISTICS_NOTIFICATION, 0);

        if (WARN_ONCE(notif_ver > 15,
                      "invalid statistics version id: %d\n", notif_ver))
                return;

        if (notif_ver == 14) {
                struct iwl_statistics_operational_ntfy_ver_14 *stats =
                        (void *)pkt->data;

                if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
                        return;

                iwl_mvm_stats_ver_14(mvm, stats);

                flags = stats->flags;
                mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
                mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
                mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
                mvm->radio_stats.on_time_scan =
                        le64_to_cpu(stats->on_time_scan);

                for (i = 0; i < ARRAY_SIZE(average_energy); i++)
                        average_energy[i] = le32_to_cpu(stats->average_energy[i]);

                for (i = 0; i < ARRAY_SIZE(air_time); i++) {
                        air_time[i] = stats->air_time[i];
                        rx_bytes[i] = stats->rx_bytes[i];
                }
        }

        if (notif_ver == 15) {
                struct iwl_statistics_operational_ntfy *stats =
                        (void *)pkt->data;

                if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
                        return;

                iwl_mvm_stats_ver_15(mvm, stats);

                flags = stats->flags;
                mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
                mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
                mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
                mvm->radio_stats.on_time_scan =
                        le64_to_cpu(stats->on_time_scan);

                for (i = 0; i < ARRAY_SIZE(average_energy); i++)
                        average_energy[i] =
                                le32_to_cpu(stats->per_sta[i].average_energy);

                for (i = 0; i < ARRAY_SIZE(air_time); i++) {
                        air_time[i] = stats->per_mac[i].air_time;
                        rx_bytes[i] = stats->per_mac[i].rx_bytes;
                }
        }

        iwl_mvm_rx_stats_check_trigger(mvm, pkt);

        ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
                                          average_energy);
        /*
         * Don't update in case the statistics are not cleared, since
         * we will end up counting twice the same airtime, once in TCM
         * request and once in statistics notification.
         */
        if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
                iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
}

void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
                                  struct iwl_rx_packet *pkt)
{
        struct iwl_mvm_stat_data data = {
                .mvm = mvm,
        };
        __le32 *bytes, *air_time, flags;
        int expected_size;
        u8 *energy;
        u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
                                           WIDE_ID(SYSTEM_GROUP,
                                                   SYSTEM_STATISTICS_CMD),
                                           IWL_FW_CMD_VER_UNKNOWN);

        if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
                return;

        /* From ver 14 and up we use TLV statistics format */
        if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
                                    STATISTICS_NOTIFICATION, 0) >= 14)
                return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);

        if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
                if (iwl_mvm_has_new_rx_api(mvm))
                        expected_size = sizeof(struct iwl_notif_statistics_v11);
                else
                        expected_size = sizeof(struct iwl_notif_statistics_v10);
        } else {
                expected_size = sizeof(struct iwl_notif_statistics);
        }

        if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
                      "received invalid statistics size (%d)!\n",
                      iwl_rx_packet_payload_len(pkt)))
                return;

        if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
                struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;

                data.mac_id = stats->rx.general.mac_id;
                data.beacon_filter_average_energy =
                        stats->general.common.beacon_filter_average_energy;

                mvm->rx_stats_v3 = stats->rx;

                mvm->radio_stats.rx_time =
                        le64_to_cpu(stats->general.common.rx_time);
                mvm->radio_stats.tx_time =
                        le64_to_cpu(stats->general.common.tx_time);
                mvm->radio_stats.on_time_rf =
                        le64_to_cpu(stats->general.common.on_time_rf);
                mvm->radio_stats.on_time_scan =
                        le64_to_cpu(stats->general.common.on_time_scan);

                data.beacon_counter = stats->general.beacon_counter;
                data.beacon_average_energy =
                        stats->general.beacon_average_energy;
                flags = stats->flag;
        } else {
                struct iwl_notif_statistics *stats = (void *)&pkt->data;

                data.mac_id = stats->rx.general.mac_id;
                data.beacon_filter_average_energy =
                        stats->general.common.beacon_filter_average_energy;

                mvm->rx_stats = stats->rx;

                mvm->radio_stats.rx_time =
                        le64_to_cpu(stats->general.common.rx_time);
                mvm->radio_stats.tx_time =
                        le64_to_cpu(stats->general.common.tx_time);
                mvm->radio_stats.on_time_rf =
                        le64_to_cpu(stats->general.common.on_time_rf);
                mvm->radio_stats.on_time_scan =
                        le64_to_cpu(stats->general.common.on_time_scan);

                data.beacon_counter = stats->general.beacon_counter;
                data.beacon_average_energy =
                        stats->general.beacon_average_energy;
                flags = stats->flag;
        }
        data.flags = flags;

        iwl_mvm_rx_stats_check_trigger(mvm, pkt);

        ieee80211_iterate_active_interfaces(mvm->hw,
                                            IEEE80211_IFACE_ITER_NORMAL,
                                            iwl_mvm_stat_iterator,
                                            &data);

        if (!iwl_mvm_has_new_rx_api(mvm))
                return;

        if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
                struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;

                energy = (void *)&v11->load_stats.avg_energy;
                bytes = (void *)&v11->load_stats.byte_count;
                air_time = (void *)&v11->load_stats.air_time;
        } else {
                struct iwl_notif_statistics *stats = (void *)&pkt->data;

                energy = (void *)&stats->load_stats.avg_energy;
                bytes = (void *)&stats->load_stats.byte_count;
                air_time = (void *)&stats->load_stats.air_time;
        }
        ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
                                          energy);

        /*
         * Don't update in case the statistics are not cleared, since
         * we will end up counting twice the same airtime, once in TCM
         * request and once in statistics notification.
         */
        if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
                iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);

}

void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
        iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
}

void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
                                 struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
        int i;

        BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
        BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
        BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
        BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);

        rcu_read_lock();
        for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
                struct ieee80211_sta *sta;
                u8 sta_id, tid;
                u64 bitmap;
                u32 ssn;
                u16 ratid;
                u16 received_mpdu;

                ratid = le16_to_cpu(notif->ra_tid[i]);
                /* check that this TID is valid */
                if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
                        continue;

                received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
                if (received_mpdu == 0)
                        continue;

                tid = ratid & BA_WINDOW_STATUS_TID_MSK;
                /* get the station */
                sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
                         >> BA_WINDOW_STATUS_STA_ID_POS;
                sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
                if (IS_ERR_OR_NULL(sta))
                        continue;
                bitmap = le64_to_cpu(notif->bitmap[i]);
                ssn = le32_to_cpu(notif->start_seq_num[i]);

                /* update mac80211 with the bitmap for the reordering buffer */
                ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
                                                     received_mpdu);
        }
        rcu_read_unlock();
}