// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 * Copyright (C) 2015-2017 Intel Deutschland GmbH
 */
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"

static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb)
{
        struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
        u8 *data = skb->data;

        /* Alignment concerns */
        BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4);
        BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4);
        BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4);
        BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4);

        if (rx_status->flag & RX_FLAG_RADIOTAP_HE)
                data += sizeof(struct ieee80211_radiotap_he);
        if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU)
                data += sizeof(struct ieee80211_radiotap_he_mu);
        if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG)
                data += sizeof(struct ieee80211_radiotap_lsig);
        if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
                struct ieee80211_vendor_radiotap *radiotap = (void *)data;

                data += sizeof(*radiotap) + radiotap->len + radiotap->pad;
        }

        return data;
}

static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
                                   int queue, struct ieee80211_sta *sta)
{
        struct iwl_mvm_sta *mvmsta;
        struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
        struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
        struct iwl_mvm_key_pn *ptk_pn;
        int res;
        u8 tid, keyidx;
        u8 pn[IEEE80211_CCMP_PN_LEN];
        u8 *extiv;

        /* do PN checking */

        /* multicast and non-data only arrives on default queue */
        if (!ieee80211_is_data(hdr->frame_control) ||
            is_multicast_ether_addr(hdr->addr1))
                return 0;

        /* do not check PN for open AP */
        if (!(stats->flag & RX_FLAG_DECRYPTED))
                return 0;

        /*
         * avoid checking for default queue - we don't want to replicate
         * all the logic that's necessary for checking the PN on fragmented
         * frames, leave that to mac80211
         */
        if (queue == 0)
                return 0;

        /* if we are here - this for sure is either CCMP or GCMP */
        if (IS_ERR_OR_NULL(sta)) {
                IWL_DEBUG_DROP(mvm,
                               "expected hw-decrypted unicast frame for station\n");
                return -1;
        }

        mvmsta = iwl_mvm_sta_from_mac80211(sta);

        extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
        keyidx = extiv[3] >> 6;

        ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
        if (!ptk_pn)
                return -1;

        if (ieee80211_is_data_qos(hdr->frame_control))
                tid = ieee80211_get_tid(hdr);
        else
                tid = 0;

        /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
        if (tid >= IWL_MAX_TID_COUNT)
                return -1;

        /* load pn */
        pn[0] = extiv[7];
        pn[1] = extiv[6];
        pn[2] = extiv[5];
        pn[3] = extiv[4];
        pn[4] = extiv[1];
        pn[5] = extiv[0];

        res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
        if (res < 0)
                return -1;
        if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
                return -1;

        memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
        stats->flag |= RX_FLAG_PN_VALIDATED;

        return 0;
}

/* iwl_mvm_create_skb Adds the rxb to a new skb */
static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
                              struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
                              struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
        unsigned int headlen, fraglen, pad_len = 0;
        unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);

        if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
                len -= 2;
                pad_len = 2;
        }

        /* 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().
         */
        headlen = (len <= skb_tailroom(skb)) ? len :
                                               hdrlen + crypt_len + 8;

        /* The firmware may align the packet to DWORD.
         * The padding is inserted after the IV.
         * After copying the header + IV skip the padding if
         * present before copying packet data.
         */
        hdrlen += crypt_len;

        if (WARN_ONCE(headlen < hdrlen,
                      "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n",
                      hdrlen, len, crypt_len)) {
                /*
                 * We warn and trace because we want to be able to see
                 * it in trace-cmd as well.
                 */
                IWL_DEBUG_RX(mvm,
                             "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n",
                             hdrlen, len, crypt_len);
                return -EINVAL;
        }

        skb_put_data(skb, hdr, hdrlen);
        skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);

        /*
         * If we did CHECKSUM_COMPLETE, the hardware only does it right for
         * certain cases and starts the checksum after the SNAP. Check if
         * this is the case - it's easier to just bail out to CHECKSUM_NONE
         * in the cases the hardware didn't handle, since it's rare to see
         * such packets, even though the hardware did calculate the checksum
         * in this case, just starting after the MAC header instead.
         */
        if (skb->ip_summed == CHECKSUM_COMPLETE) {
                struct {
                        u8 hdr[6];
                        __be16 type;
                } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);

                if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
                             !ether_addr_equal(shdr->hdr, rfc1042_header) ||
                             (shdr->type != htons(ETH_P_IP) &&
                              shdr->type != htons(ETH_P_ARP) &&
                              shdr->type != htons(ETH_P_IPV6) &&
                              shdr->type != htons(ETH_P_8021Q) &&
                              shdr->type != htons(ETH_P_PAE) &&
                              shdr->type != htons(ETH_P_TDLS))))
                        skb->ip_summed = CHECKSUM_NONE;
        }

        fraglen = len - headlen;

        if (fraglen) {
                int offset = (void *)hdr + headlen + pad_len -
                             rxb_addr(rxb) + rxb_offset(rxb);

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

        return 0;
}

static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
                                            struct sk_buff *skb)
{
        struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
        struct ieee80211_vendor_radiotap *radiotap;
        const int size = sizeof(*radiotap) + sizeof(__le16);

        if (!mvm->cur_aid)
                return;

        /* ensure alignment */
        BUILD_BUG_ON((size + 2) % 4);

        radiotap = skb_put(skb, size + 2);
        radiotap->align = 1;
        /* Intel OUI */
        radiotap->oui[0] = 0xf6;
        radiotap->oui[1] = 0x54;
        radiotap->oui[2] = 0x25;
        /* radiotap sniffer config sub-namespace */
        radiotap->subns = 1;
        radiotap->present = 0x1;
        radiotap->len = size - sizeof(*radiotap);
        radiotap->pad = 2;

        /* fill the data now */
        memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
        /* and clear the padding */
        memset(radiotap->data + sizeof(__le16), 0, radiotap->pad);

        rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
}

/* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
                                            struct napi_struct *napi,
                                            struct sk_buff *skb, int queue,
                                            struct ieee80211_sta *sta)
{
        if (iwl_mvm_check_pn(mvm, skb, queue, sta))
                kfree_skb(skb);
        else
                ieee80211_rx_napi(mvm->hw, sta, skb, napi);
}

static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
                                        struct ieee80211_rx_status *rx_status,
                                        u32 rate_n_flags, int energy_a,
                                        int energy_b)
{
        int max_energy;
        u32 rate_flags = rate_n_flags;

        energy_a = energy_a ? -energy_a : S8_MIN;
        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 =
                (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
        rx_status->chain_signal[0] = energy_a;
        rx_status->chain_signal[1] = energy_b;
}

static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
                                struct ieee80211_hdr *hdr,
                                struct iwl_rx_mpdu_desc *desc,
                                u32 status)
{
        struct iwl_mvm_sta *mvmsta;
        struct iwl_mvm_vif *mvmvif;
        u8 keyid;
        struct ieee80211_key_conf *key;
        u32 len = le16_to_cpu(desc->mpdu_len);
        const u8 *frame = (void *)hdr;

        if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
                return 0;

        /*
         * For non-beacon, we don't really care. But beacons may
         * be filtered out, and we thus need the firmware's replay
         * detection, otherwise beacons the firmware previously
         * filtered could be replayed, or something like that, and
         * it can filter a lot - though usually only if nothing has
         * changed.
         */
        if (!ieee80211_is_beacon(hdr->frame_control))
                return 0;

        /* key mismatch - will also report !MIC_OK but we shouldn't count it */
        if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
                return -1;

        /* good cases */
        if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
                   !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)))
                return 0;

        if (!sta)
                return -1;

        mvmsta = iwl_mvm_sta_from_mac80211(sta);

        mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);

        /*
         * both keys will have the same cipher and MIC length, use
         * whichever one is available
         */
        key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
        if (!key) {
                key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
                if (!key)
                        return -1;
        }

        if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
                return -1;

        /* get the real key ID */
        keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
        /* and if that's the other key, look it up */
        if (keyid != key->keyidx) {
                /*
                 * shouldn't happen since firmware checked, but be safe
                 * in case the MIC length is wrong too, for example
                 */
                if (keyid != 6 && keyid != 7)
                        return -1;
                key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
                if (!key)
                        return -1;
        }

        /* Report status to mac80211 */
        if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
                ieee80211_key_mic_failure(key);
        else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
                ieee80211_key_replay(key);

        return -1;
}

static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
                             struct ieee80211_hdr *hdr,
                             struct ieee80211_rx_status *stats, u16 phy_info,
                             struct iwl_rx_mpdu_desc *desc,
                             u32 pkt_flags, int queue, u8 *crypt_len)
{
        u32 status = le32_to_cpu(desc->status);

        /*
         * Drop UNKNOWN frames in aggregation, unless in monitor mode
         * (where we don't have the keys).
         * We limit this to aggregation because in TKIP this is a valid
         * scenario, since we may not have the (correct) TTAK (phase 1
         * key) in the firmware.
         */
        if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
            (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
            IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
                return -1;

        if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
                     !ieee80211_has_protected(hdr->frame_control)))
                return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status);

        if (!ieee80211_has_protected(hdr->frame_control) ||
            (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
            IWL_RX_MPDU_STATUS_SEC_NONE)
                return 0;

        /* TODO: handle packets encrypted with unknown alg */

        switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
        case IWL_RX_MPDU_STATUS_SEC_CCM:
        case IWL_RX_MPDU_STATUS_SEC_GCM:
                BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
                /* alg is CCM: check MIC only */
                if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
                        return -1;

                stats->flag |= RX_FLAG_DECRYPTED;
                if (pkt_flags & FH_RSCSR_RADA_EN)
                        stats->flag |= RX_FLAG_MIC_STRIPPED;
                *crypt_len = IEEE80211_CCMP_HDR_LEN;
                return 0;
        case IWL_RX_MPDU_STATUS_SEC_TKIP:
                /* Don't drop the frame and decrypt it in SW */
                if (!fw_has_api(&mvm->fw->ucode_capa,
                                IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
                    !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
                        return 0;

                if (mvm->trans->trans_cfg->gen2 &&
                    !(status & RX_MPDU_RES_STATUS_MIC_OK))
                        stats->flag |= RX_FLAG_MMIC_ERROR;

                *crypt_len = IEEE80211_TKIP_IV_LEN;
                fallthrough;
        case IWL_RX_MPDU_STATUS_SEC_WEP:
                if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
                        return -1;

                stats->flag |= RX_FLAG_DECRYPTED;
                if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
                                IWL_RX_MPDU_STATUS_SEC_WEP)
                        *crypt_len = IEEE80211_WEP_IV_LEN;

                if (pkt_flags & FH_RSCSR_RADA_EN) {
                        stats->flag |= RX_FLAG_ICV_STRIPPED;
                        if (mvm->trans->trans_cfg->gen2)
                                stats->flag |= RX_FLAG_MMIC_STRIPPED;
                }

                return 0;
        case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
                if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
                        return -1;
                stats->flag |= RX_FLAG_DECRYPTED;
                return 0;
        case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
                break;
        default:
                /*
                 * Sometimes we can get frames that were not decrypted
                 * because the firmware didn't have the keys yet. This can
                 * happen after connection where we can get multicast frames
                 * before the GTK is installed.
                 * Silently drop those frames.
                 * Also drop un-decrypted frames in monitor mode.
                 */
                if (!is_multicast_ether_addr(hdr->addr1) &&
                    !mvm->monitor_on && net_ratelimit())
                        IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
        }

        return 0;
}

static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
                            struct ieee80211_sta *sta,
                            struct sk_buff *skb,
                            struct iwl_rx_packet *pkt)
{
        struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;

        if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
                if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
                        u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);

                        skb->ip_summed = CHECKSUM_COMPLETE;
                        skb->csum = csum_unfold(~(__force __sum16)hwsum);
                }
        } else {
                struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
                struct iwl_mvm_vif *mvmvif;
                u16 flags = le16_to_cpu(desc->l3l4_flags);
                u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
                                  IWL_RX_L3_PROTO_POS);

                mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);

                if (mvmvif->features & NETIF_F_RXCSUM &&
                    flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
                    (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
                     l3_prot == IWL_RX_L3_TYPE_IPV6 ||
                     l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
                        skb->ip_summed = CHECKSUM_UNNECESSARY;
        }
}

/*
 * returns true if a packet is a duplicate and should be dropped.
 * Updates AMSDU PN tracking info
 */
static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
                           struct ieee80211_rx_status *rx_status,
                           struct ieee80211_hdr *hdr,
                           struct iwl_rx_mpdu_desc *desc)
{
        struct iwl_mvm_sta *mvm_sta;
        struct iwl_mvm_rxq_dup_data *dup_data;
        u8 tid, sub_frame_idx;

        if (WARN_ON(IS_ERR_OR_NULL(sta)))
                return false;

        mvm_sta = iwl_mvm_sta_from_mac80211(sta);
        dup_data = &mvm_sta->dup_data[queue];

        /*
         * Drop duplicate 802.11 retransmissions
         * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
         */
        if (ieee80211_is_ctl(hdr->frame_control) ||
            ieee80211_is_qos_nullfunc(hdr->frame_control) ||
            is_multicast_ether_addr(hdr->addr1)) {
                rx_status->flag |= RX_FLAG_DUP_VALIDATED;
                return false;
        }

        if (ieee80211_is_data_qos(hdr->frame_control))
                /* frame has qos control */
                tid = ieee80211_get_tid(hdr);
        else
                tid = IWL_MAX_TID_COUNT;

        /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
        sub_frame_idx = desc->amsdu_info &
                IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;

        if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
                     dup_data->last_seq[tid] == hdr->seq_ctrl &&
                     dup_data->last_sub_frame[tid] >= sub_frame_idx))
                return true;

        /* Allow same PN as the first subframe for following sub frames */
        if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
            sub_frame_idx > dup_data->last_sub_frame[tid] &&
            desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
                rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;

        dup_data->last_seq[tid] = hdr->seq_ctrl;
        dup_data->last_sub_frame[tid] = sub_frame_idx;

        rx_status->flag |= RX_FLAG_DUP_VALIDATED;

        return false;
}

/*
 * Returns true if sn2 - buffer_size < sn1 < sn2.
 * To be used only in order to compare reorder buffer head with NSSN.
 * We fully trust NSSN unless it is behind us due to reorder timeout.
 * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
 */
static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
{
        return ieee80211_sn_less(sn1, sn2) &&
               !ieee80211_sn_less(sn1, sn2 - buffer_size);
}

static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn)
{
        if (IWL_MVM_USE_NSSN_SYNC) {
                struct iwl_mvm_nssn_sync_data notif = {
                        .baid = baid,
                        .nssn = nssn,
                };

                iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NSSN_SYNC, false,
                                                &notif, sizeof(notif));
        }
}

#define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)

enum iwl_mvm_release_flags {
        IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0),
        IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1),
};

static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
                                   struct ieee80211_sta *sta,
                                   struct napi_struct *napi,
                                   struct iwl_mvm_baid_data *baid_data,
                                   struct iwl_mvm_reorder_buffer *reorder_buf,
                                   u16 nssn, u32 flags)
{
        struct iwl_mvm_reorder_buf_entry *entries =
                &baid_data->entries[reorder_buf->queue *
                                    baid_data->entries_per_queue];
        u16 ssn = reorder_buf->head_sn;

        lockdep_assert_held(&reorder_buf->lock);

        /*
         * We keep the NSSN not too far behind, if we are sync'ing it and it
         * is more than 2048 ahead of us, it must be behind us. Discard it.
         * This can happen if the queue that hit the 0 / 2048 seqno was lagging
         * behind and this queue already processed packets. The next if
         * would have caught cases where this queue would have processed less
         * than 64 packets, but it may have processed more than 64 packets.
         */
        if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) &&
            ieee80211_sn_less(nssn, ssn))
                goto set_timer;

        /* ignore nssn smaller than head sn - this can happen due to timeout */
        if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
                goto set_timer;

        while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
                int index = ssn % reorder_buf->buf_size;
                struct sk_buff_head *skb_list = &entries[index].e.frames;
                struct sk_buff *skb;

                ssn = ieee80211_sn_inc(ssn);
                if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) &&
                    (ssn == 2048 || ssn == 0))
                        iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn);

                /*
                 * Empty the list. Will have more than one frame for A-MSDU.
                 * Empty list is valid as well since nssn indicates frames were
                 * received.
                 */
                while ((skb = __skb_dequeue(skb_list))) {
                        iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
                                                        reorder_buf->queue,
                                                        sta);
                        reorder_buf->num_stored--;
                }
        }
        reorder_buf->head_sn = nssn;

set_timer:
        if (reorder_buf->num_stored && !reorder_buf->removed) {
                u16 index = reorder_buf->head_sn % reorder_buf->buf_size;

                while (skb_queue_empty(&entries[index].e.frames))
                        index = (index + 1) % reorder_buf->buf_size;
                /* modify timer to match next frame's expiration time */
                mod_timer(&reorder_buf->reorder_timer,
                          entries[index].e.reorder_time + 1 +
                          RX_REORDER_BUF_TIMEOUT_MQ);
        } else {
                del_timer(&reorder_buf->reorder_timer);
        }
}

void iwl_mvm_reorder_timer_expired(struct timer_list *t)
{
        struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
        struct iwl_mvm_baid_data *baid_data =
                iwl_mvm_baid_data_from_reorder_buf(buf);
        struct iwl_mvm_reorder_buf_entry *entries =
                &baid_data->entries[buf->queue * baid_data->entries_per_queue];
        int i;
        u16 sn = 0, index = 0;
        bool expired = false;
        bool cont = false;

        spin_lock(&buf->lock);

        if (!buf->num_stored || buf->removed) {
                spin_unlock(&buf->lock);
                return;
        }

        for (i = 0; i < buf->buf_size ; i++) {
                index = (buf->head_sn + i) % buf->buf_size;

                if (skb_queue_empty(&entries[index].e.frames)) {
                        /*
                         * If there is a hole and the next frame didn't expire
                         * we want to break and not advance SN
                         */
                        cont = false;
                        continue;
                }
                if (!cont &&
                    !time_after(jiffies, entries[index].e.reorder_time +
                                         RX_REORDER_BUF_TIMEOUT_MQ))
                        break;

                expired = true;
                /* continue until next hole after this expired frames */
                cont = true;
                sn = ieee80211_sn_add(buf->head_sn, i + 1);
        }

        if (expired) {
                struct ieee80211_sta *sta;
                struct iwl_mvm_sta *mvmsta;
                u8 sta_id = baid_data->sta_id;

                rcu_read_lock();
                sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
                mvmsta = iwl_mvm_sta_from_mac80211(sta);

                /* SN is set to the last expired frame + 1 */
                IWL_DEBUG_HT(buf->mvm,
                             "Releasing expired frames for sta %u, sn %d\n",
                             sta_id, sn);
                iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
                                                     sta, baid_data->tid);
                iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data,
                                       buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
                rcu_read_unlock();
        } else {
                /*
                 * If no frame expired and there are stored frames, index is now
                 * pointing to the first unexpired frame - modify timer
                 * accordingly to this frame.
                 */
                mod_timer(&buf->reorder_timer,
                          entries[index].e.reorder_time +
                          1 + RX_REORDER_BUF_TIMEOUT_MQ);
        }
        spin_unlock(&buf->lock);
}

static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
                           struct iwl_mvm_delba_data *data)
{
        struct iwl_mvm_baid_data *ba_data;
        struct ieee80211_sta *sta;
        struct iwl_mvm_reorder_buffer *reorder_buf;
        u8 baid = data->baid;

        if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
                return;

        rcu_read_lock();

        ba_data = rcu_dereference(mvm->baid_map[baid]);
        if (WARN_ON_ONCE(!ba_data))
                goto out;

        sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
        if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
                goto out;

        reorder_buf = &ba_data->reorder_buf[queue];

        /* release all frames that are in the reorder buffer to the stack */
        spin_lock_bh(&reorder_buf->lock);
        iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
                               ieee80211_sn_add(reorder_buf->head_sn,
                                                reorder_buf->buf_size),
                               0);
        spin_unlock_bh(&reorder_buf->lock);
        del_timer_sync(&reorder_buf->reorder_timer);

out:
        rcu_read_unlock();
}

static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
                                              struct napi_struct *napi,
                                              u8 baid, u16 nssn, int queue,
                                              u32 flags)
{
        struct ieee80211_sta *sta;
        struct iwl_mvm_reorder_buffer *reorder_buf;
        struct iwl_mvm_baid_data *ba_data;

        IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
                     baid, nssn);

        if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
                         baid >= ARRAY_SIZE(mvm->baid_map)))
                return;

        rcu_read_lock();

        ba_data = rcu_dereference(mvm->baid_map[baid]);
        if (WARN_ON_ONCE(!ba_data))
                goto out;

        sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
        if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
                goto out;

        reorder_buf = &ba_data->reorder_buf[queue];

        spin_lock_bh(&reorder_buf->lock);
        iwl_mvm_release_frames(mvm, sta, napi, ba_data,
                               reorder_buf, nssn, flags);
        spin_unlock_bh(&reorder_buf->lock);

out:
        rcu_read_unlock();
}

static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
                              struct napi_struct *napi, int queue,
                              const struct iwl_mvm_nssn_sync_data *data)
{
        iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
                                          data->nssn, queue,
                                          IWL_MVM_RELEASE_FROM_RSS_SYNC);
}

void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
                            struct iwl_rx_cmd_buffer *rxb, int queue)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_rxq_sync_notification *notif;
        struct iwl_mvm_internal_rxq_notif *internal_notif;
        u32 len = iwl_rx_packet_payload_len(pkt);

        notif = (void *)pkt->data;
        internal_notif = (void *)notif->payload;

        if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
                      "invalid notification size %d (%d)",
                      len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
                return;
        len -= sizeof(*notif) + sizeof(*internal_notif);

        if (internal_notif->sync &&
            mvm->queue_sync_cookie != internal_notif->cookie) {
                WARN_ONCE(1, "Received expired RX queue sync message\n");
                return;
        }

        switch (internal_notif->type) {
        case IWL_MVM_RXQ_EMPTY:
                WARN_ONCE(len, "invalid empty notification size %d", len);
                break;
        case IWL_MVM_RXQ_NOTIF_DEL_BA:
                if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
                              "invalid delba notification size %d (%d)",
                              len, (int)sizeof(struct iwl_mvm_delba_data)))
                        break;
                iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
                break;
        case IWL_MVM_RXQ_NSSN_SYNC:
                if (WARN_ONCE(len != sizeof(struct iwl_mvm_nssn_sync_data),
                              "invalid nssn sync notification size %d (%d)",
                              len, (int)sizeof(struct iwl_mvm_nssn_sync_data)))
                        break;
                iwl_mvm_nssn_sync(mvm, napi, queue,
                                  (void *)internal_notif->data);
                break;
        default:
                WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
        }

        if (internal_notif->sync) {
                WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
                          "queue sync: queue %d responded a second time!\n",
                          queue);
                if (READ_ONCE(mvm->queue_sync_state) == 0)
                        wake_up(&mvm->rx_sync_waitq);
        }
}

static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm,
                                     struct ieee80211_sta *sta, int tid,
                                     struct iwl_mvm_reorder_buffer *buffer,
                                     u32 reorder, u32 gp2, int queue)
{
        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);

        if (gp2 != buffer->consec_oldsn_ampdu_gp2) {
                /* we have a new (A-)MPDU ... */

                /*
                 * reset counter to 0 if we didn't have any oldsn in
                 * the last A-MPDU (as detected by GP2 being identical)
                 */
                if (!buffer->consec_oldsn_prev_drop)
                        buffer->consec_oldsn_drops = 0;

                /* either way, update our tracking state */
                buffer->consec_oldsn_ampdu_gp2 = gp2;
        } else if (buffer->consec_oldsn_prev_drop) {
                /*
                 * tracking state didn't change, and we had an old SN
                 * indication before - do nothing in this case, we
                 * already noted this one down and are waiting for the
                 * next A-MPDU (by GP2)
                 */
                return;
        }

        /* return unless this MPDU has old SN */
        if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN))
                return;

        /* update state */
        buffer->consec_oldsn_prev_drop = 1;
        buffer->consec_oldsn_drops++;

        /* if limit is reached, send del BA and reset state */
        if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) {
                IWL_WARN(mvm,
                         "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n",
                         IWL_MVM_AMPDU_CONSEC_DROPS_DELBA,
                         sta->addr, queue, tid);
                ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr);
                buffer->consec_oldsn_prev_drop = 0;
                buffer->consec_oldsn_drops = 0;
        }
}

/*
 * Returns true if the MPDU was buffered\dropped, false if it should be passed
 * to upper layer.
 */
static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
                            struct napi_struct *napi,
                            int queue,
                            struct ieee80211_sta *sta,
                            struct sk_buff *skb,
                            struct iwl_rx_mpdu_desc *desc)
{
        struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
        struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
        struct iwl_mvm_sta *mvm_sta;
        struct iwl_mvm_baid_data *baid_data;
        struct iwl_mvm_reorder_buffer *buffer;
        struct sk_buff *tail;
        u32 reorder = le32_to_cpu(desc->reorder_data);
        bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
        bool last_subframe =
                desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
        u8 tid = ieee80211_get_tid(hdr);
        u8 sub_frame_idx = desc->amsdu_info &
                           IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
        struct iwl_mvm_reorder_buf_entry *entries;
        int index;
        u16 nssn, sn;
        u8 baid;

        baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
                IWL_RX_MPDU_REORDER_BAID_SHIFT;

        /*
         * This also covers the case of receiving a Block Ack Request
         * outside a BA session; we'll pass it to mac80211 and that
         * then sends a delBA action frame.
         * This also covers pure monitor mode, in which case we won't
         * have any BA sessions.
         */
        if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
                return false;

        /* no sta yet */
        if (WARN_ONCE(IS_ERR_OR_NULL(sta),
                      "Got valid BAID without a valid station assigned\n"))
                return false;

        mvm_sta = iwl_mvm_sta_from_mac80211(sta);

        /* not a data packet or a bar */
        if (!ieee80211_is_back_req(hdr->frame_control) &&
            (!ieee80211_is_data_qos(hdr->frame_control) ||
             is_multicast_ether_addr(hdr->addr1)))
                return false;

        if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
                return false;

        baid_data = rcu_dereference(mvm->baid_map[baid]);
        if (!baid_data) {
                IWL_DEBUG_RX(mvm,
                             "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
                              baid, reorder);
                return false;
        }

        if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
                 "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
                 baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
                 tid))
                return false;

        nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
        sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
                IWL_RX_MPDU_REORDER_SN_SHIFT;

        buffer = &baid_data->reorder_buf[queue];
        entries = &baid_data->entries[queue * baid_data->entries_per_queue];

        spin_lock_bh(&buffer->lock);

        if (!buffer->valid) {
                if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
                        spin_unlock_bh(&buffer->lock);
                        return false;
                }
                buffer->valid = true;
        }

        if (ieee80211_is_back_req(hdr->frame_control)) {
                iwl_mvm_release_frames(mvm, sta, napi, baid_data,
                                       buffer, nssn, 0);
                goto drop;
        }

        /*
         * If there was a significant jump in the nssn - adjust.
         * If the SN is smaller than the NSSN it might need to first go into
         * the reorder buffer, in which case we just release up to it and the
         * rest of the function will take care of storing it and releasing up to
         * the nssn.

         * This should not happen. This queue has been lagging and it should
         * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice
         * and update the other queues.
         */
        if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
                                buffer->buf_size) ||
            !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
                u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;

                iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
                                       min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
        }

        iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder,
                                 rx_status->device_timestamp, queue);

        /* drop any oudated packets */
        if (ieee80211_sn_less(sn, buffer->head_sn))
                goto drop;

        /* release immediately if allowed by nssn and no stored frames */
        if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
                if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
                                       buffer->buf_size) &&
                   (!amsdu || last_subframe)) {
                        /*
                         * If we crossed the 2048 or 0 SN, notify all the
                         * queues. This is done in order to avoid having a
                         * head_sn that lags behind for too long. When that
                         * happens, we can get to a situation where the head_sn
                         * is within the interval [nssn - buf_size : nssn]
                         * which will make us think that the nssn is a packet
                         * that we already freed because of the reordering
                         * buffer and we will ignore it. So maintain the
                         * head_sn somewhat updated across all the queues:
                         * when it crosses 0 and 2048.
                         */
                        if (sn == 2048 || sn == 0)
                                iwl_mvm_sync_nssn(mvm, baid, sn);
                        buffer->head_sn = nssn;
                }
                /* No need to update AMSDU last SN - we are moving the head */
                spin_unlock_bh(&buffer->lock);
                return false;
        }

        /*
         * release immediately if there are no stored frames, and the sn is
         * equal to the head.
         * This can happen due to reorder timer, where NSSN is behind head_sn.
         * When we released everything, and we got the next frame in the
         * sequence, according to the NSSN we can't release immediately,
         * while technically there is no hole and we can move forward.
         */
        if (!buffer->num_stored && sn == buffer->head_sn) {
                if (!amsdu || last_subframe) {
                        if (sn == 2048 || sn == 0)
                                iwl_mvm_sync_nssn(mvm, baid, sn);
                        buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
                }
                /* No need to update AMSDU last SN - we are moving the head */
                spin_unlock_bh(&buffer->lock);
                return false;
        }

        index = sn % buffer->buf_size;

        /*
         * Check if we already stored this frame
         * As AMSDU is either received or not as whole, logic is simple:
         * If we have frames in that position in the buffer and the last frame
         * originated from AMSDU had a different SN then it is a retransmission.
         * If it is the same SN then if the subframe index is incrementing it
         * is the same AMSDU - otherwise it is a retransmission.
         */
        tail = skb_peek_tail(&entries[index].e.frames);
        if (tail && !amsdu)
                goto drop;
        else if (tail && (sn != buffer->last_amsdu ||
                          buffer->last_sub_index >= sub_frame_idx))
                goto drop;

        /* put in reorder buffer */
        __skb_queue_tail(&entries[index].e.frames, skb);
        buffer->num_stored++;
        entries[index].e.reorder_time = jiffies;

        if (amsdu) {
                buffer->last_amsdu = sn;
                buffer->last_sub_index = sub_frame_idx;
        }

        /*
         * We cannot trust NSSN for AMSDU sub-frames that are not the last.
         * The reason is that NSSN advances on the first sub-frame, and may
         * cause the reorder buffer to advance before all the sub-frames arrive.
         * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
         * SN 1. NSSN for first sub frame will be 3 with the result of driver
         * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
         * already ahead and it will be dropped.
         * If the last sub-frame is not on this queue - we will get frame
         * release notification with up to date NSSN.
         */
        if (!amsdu || last_subframe)
                iwl_mvm_release_frames(mvm, sta, napi, baid_data,
                                       buffer, nssn,
                                       IWL_MVM_RELEASE_SEND_RSS_SYNC);

        spin_unlock_bh(&buffer->lock);
        return true;

drop:
        kfree_skb(skb);
        spin_unlock_bh(&buffer->lock);
        return true;
}

static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
                                    u32 reorder_data, u8 baid)
{
        unsigned long now = jiffies;
        unsigned long timeout;
        struct iwl_mvm_baid_data *data;

        rcu_read_lock();

        data = rcu_dereference(mvm->baid_map[baid]);
        if (!data) {
                IWL_DEBUG_RX(mvm,
                             "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
                              baid, reorder_data);
                goto out;
        }

        if (!data->timeout)
                goto out;

        timeout = data->timeout;
        /*
         * Do not update last rx all the time to avoid cache bouncing
         * between the rx queues.
         * Update it every timeout. Worst case is the session will
         * expire after ~ 2 * timeout, which doesn't matter that much.
         */
        if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
                /* Update is atomic */
                data->last_rx = now;

out:
        rcu_read_unlock();
}

static void iwl_mvm_flip_address(u8 *addr)
{
        int i;
        u8 mac_addr[ETH_ALEN];

        for (i = 0; i < ETH_ALEN; i++)
                mac_addr[i] = addr[ETH_ALEN - i - 1];
        ether_addr_copy(addr, mac_addr);
}

struct iwl_mvm_rx_phy_data {
        enum iwl_rx_phy_info_type info_type;
        __le32 d0, d1, d2, d3;
        __le16 d4;
};

static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
                                     struct iwl_mvm_rx_phy_data *phy_data,
                                     u32 rate_n_flags,
                                     struct ieee80211_radiotap_he_mu *he_mu)
{
        u32 phy_data2 = le32_to_cpu(phy_data->d2);
        u32 phy_data3 = le32_to_cpu(phy_data->d3);
        u16 phy_data4 = le16_to_cpu(phy_data->d4);

        if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
                he_mu->flags1 |=
                        cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
                                    IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);

                he_mu->flags1 |=
                        le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
                                                   phy_data4),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);

                he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
                                             phy_data2);
                he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
                                             phy_data3);
                he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
                                             phy_data2);
                he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
                                             phy_data3);
        }

        if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
            (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
                he_mu->flags1 |=
                        cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
                                    IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);

                he_mu->flags2 |=
                        le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
                                                   phy_data4),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);

                he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
                                             phy_data2);
                he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
                                             phy_data3);
                he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
                                             phy_data2);
                he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
                                             phy_data3);
        }
}

static void
iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
                               u32 rate_n_flags,
                               struct ieee80211_radiotap_he *he,
                               struct ieee80211_radiotap_he_mu *he_mu,
                               struct ieee80211_rx_status *rx_status)
{
        /*
         * Unfortunately, we have to leave the mac80211 data
         * incorrect for the case that we receive an HE-MU
         * transmission and *don't* have the HE phy data (due
         * to the bits being used for TSF). This shouldn't
         * happen though as management frames where we need
         * the TSF/timers are not be transmitted in HE-MU.
         */
        u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
        u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
        u8 offs = 0;

        rx_status->bw = RATE_INFO_BW_HE_RU;

        he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);

        switch (ru) {
        case 0 ... 36:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
                offs = ru;
                break;
        case 37 ... 52:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
                offs = ru - 37;
                break;
        case 53 ... 60:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
                offs = ru - 53;
                break;
        case 61 ... 64:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
                offs = ru - 61;
                break;
        case 65 ... 66:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
                offs = ru - 65;
                break;
        case 67:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
                break;
        case 68:
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
                break;
        }
        he->data2 |= le16_encode_bits(offs,
                                      IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
        he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
                                 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
        if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
                he->data2 |=
                        cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);

#define CHECK_BW(bw) \
        BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
                     RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
        BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
                     RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
        CHECK_BW(20);
        CHECK_BW(40);
        CHECK_BW(80);
        CHECK_BW(160);

        if (he_mu)
                he_mu->flags2 |=
                        le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
                                                   rate_n_flags),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
        else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
                he->data6 |=
                        cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
                        le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
                                                   rate_n_flags),
                                         IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
}

static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
                                       struct iwl_mvm_rx_phy_data *phy_data,
                                       struct ieee80211_radiotap_he *he,
                                       struct ieee80211_radiotap_he_mu *he_mu,
                                       struct ieee80211_rx_status *rx_status,
                                       u32 rate_n_flags, int queue)
{
        switch (phy_data->info_type) {
        case IWL_RX_PHY_INFO_TYPE_NONE:
        case IWL_RX_PHY_INFO_TYPE_CCK:
        case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
        case IWL_RX_PHY_INFO_TYPE_HT:
        case IWL_RX_PHY_INFO_TYPE_VHT_SU:
        case IWL_RX_PHY_INFO_TYPE_VHT_MU:
                return;
        case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
                he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
                he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
                                                            IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
                                              IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
                he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
                                                            IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
                                              IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
                he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
                                                            IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
                                              IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
                he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
                                                            IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
                                              IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
                fallthrough;
        case IWL_RX_PHY_INFO_TYPE_HE_SU:
        case IWL_RX_PHY_INFO_TYPE_HE_MU:
        case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
        case IWL_RX_PHY_INFO_TYPE_HE_TB:
                /* HE common */
                he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
                he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
                                         IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
                he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
                                              IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
                if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
                    phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
                        he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
                        he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_UPLINK),
                                                      IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
                }
                he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
                                              IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
                he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
                                              IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
                he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
                                              IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
                he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
                                                            IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
                                              IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
                he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
                                              IEEE80211_RADIOTAP_HE_DATA6_TXOP);
                he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_DOPPLER),
                                              IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
                break;
        }

        switch (phy_data->info_type) {
        case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
        case IWL_RX_PHY_INFO_TYPE_HE_MU:
        case IWL_RX_PHY_INFO_TYPE_HE_SU:
                he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
                he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
                                              IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
                break;
        default:
                /* nothing here */
                break;
        }

        switch (phy_data->info_type) {
        case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
                he_mu->flags1 |=
                        le16_encode_bits(le16_get_bits(phy_data->d4,
                                                       IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
                he_mu->flags1 |=
                        le16_encode_bits(le16_get_bits(phy_data->d4,
                                                       IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
                he_mu->flags2 |=
                        le16_encode_bits(le16_get_bits(phy_data->d4,
                                                       IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
                iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
                fallthrough;
        case IWL_RX_PHY_INFO_TYPE_HE_MU:
                he_mu->flags2 |=
                        le16_encode_bits(le32_get_bits(phy_data->d1,
                                                       IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
                he_mu->flags2 |=
                        le16_encode_bits(le32_get_bits(phy_data->d1,
                                                       IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
                                         IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
                fallthrough;
        case IWL_RX_PHY_INFO_TYPE_HE_TB:
        case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
                iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
                                               he, he_mu, rx_status);
                break;
        case IWL_RX_PHY_INFO_TYPE_HE_SU:
                he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
                he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
                                                            IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
                                              IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
                break;
        default:
                /* nothing */
                break;
        }
}

static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
                          struct iwl_mvm_rx_phy_data *phy_data,
                          u32 rate_n_flags, u16 phy_info, int queue)
{
        struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
        struct ieee80211_radiotap_he *he = NULL;
        struct ieee80211_radiotap_he_mu *he_mu = NULL;
        u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
        u8 stbc, ltf;
        static const struct ieee80211_radiotap_he known = {
                .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
                                     IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
                                     IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
                                     IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
                .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
                                     IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
        };
        static const struct ieee80211_radiotap_he_mu mu_known = {
                .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
                                      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
                                      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
                                      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
                .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
                                      IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
        };

        he = skb_put_data(skb, &known, sizeof(known));
        rx_status->flag |= RX_FLAG_RADIOTAP_HE;

        if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
            phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
                he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
                rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
        }

        /* report the AMPDU-EOF bit on single frames */
        if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
                rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
                rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
                if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
                        rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
        }

        if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
                iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
                                           rate_n_flags, queue);

        /* update aggregation data for monitor sake on default queue */
        if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
            (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
                bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;

                /* toggle is switched whenever new aggregation starts */
                if (toggle_bit != mvm->ampdu_toggle) {
                        rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
                        if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
                                rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
                }
        }

        if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
            rate_n_flags & RATE_MCS_HE_106T_MSK) {
                rx_status->bw = RATE_INFO_BW_HE_RU;
                rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
        }

        /* actually data is filled in mac80211 */
        if (he_type == RATE_MCS_HE_TYPE_SU ||
            he_type == RATE_MCS_HE_TYPE_EXT_SU)
                he->data1 |=
                        cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);

        stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
        rx_status->nss =
                ((rate_n_flags & RATE_MCS_NSS_MSK) >>
                 RATE_MCS_NSS_POS) + 1;
        rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
        rx_status->encoding = RX_ENC_HE;
        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;

        rx_status->he_dcm =
                !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);

#define CHECK_TYPE(F)                                                   \
        BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=        \
                     (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))

        CHECK_TYPE(SU);
        CHECK_TYPE(EXT_SU);
        CHECK_TYPE(MU);
        CHECK_TYPE(TRIG);

        he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);

        if (rate_n_flags & RATE_MCS_BF_MSK)
                he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);

        switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
                RATE_MCS_HE_GI_LTF_POS) {
        case 0:
                if (he_type == RATE_MCS_HE_TYPE_TRIG)
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
                else
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                if (he_type == RATE_MCS_HE_TYPE_MU)
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
                else
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
                break;
        case 1:
                if (he_type == RATE_MCS_HE_TYPE_TRIG)
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
                else
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
                break;
        case 2:
                if (he_type == RATE_MCS_HE_TYPE_TRIG) {
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
                } else {
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
                }
                break;
        case 3:
                rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
                ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
                break;
        case 4:
                rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
                break;
        default:
                ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
        }

        he->data5 |= le16_encode_bits(ltf,
                                      IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
}

static void iwl_mvm_decode_lsig(struct sk_buff *skb,
                                struct iwl_mvm_rx_phy_data *phy_data)
{
        struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
        struct ieee80211_radiotap_lsig *lsig;

        switch (phy_data->info_type) {
        case IWL_RX_PHY_INFO_TYPE_HT:
        case IWL_RX_PHY_INFO_TYPE_VHT_SU:
        case IWL_RX_PHY_INFO_TYPE_VHT_MU:
        case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
        case IWL_RX_PHY_INFO_TYPE_HE_SU:
        case IWL_RX_PHY_INFO_TYPE_HE_MU:
        case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
        case IWL_RX_PHY_INFO_TYPE_HE_TB:
                lsig = skb_put(skb, sizeof(*lsig));
                lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
                lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
                                                             IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
                                               IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
                rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
                break;
        default:
                break;
        }
}

static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)
{
        switch (phy_band) {
        case PHY_BAND_24:
                return NL80211_BAND_2GHZ;
        case PHY_BAND_5:
                return NL80211_BAND_5GHZ;
        case PHY_BAND_6:
                return NL80211_BAND_6GHZ;
        default:
                WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band);
                return NL80211_BAND_5GHZ;
        }
}

struct iwl_rx_sta_csa {
        bool all_sta_unblocked;
        struct ieee80211_vif *vif;
};

static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
{
        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
        struct iwl_rx_sta_csa *rx_sta_csa = data;

        if (mvmsta->vif != rx_sta_csa->vif)
                return;

        if (mvmsta->disable_tx)
                rx_sta_csa->all_sta_unblocked = false;
}

void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
                        struct iwl_rx_cmd_buffer *rxb, int queue)
{
        struct ieee80211_rx_status *rx_status;
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
        struct ieee80211_hdr *hdr;
        u32 len;
        u32 pkt_len = iwl_rx_packet_payload_len(pkt);
        u32 rate_n_flags, gp2_on_air_rise;
        u16 phy_info;
        struct ieee80211_sta *sta = NULL;
        struct sk_buff *skb;
        u8 crypt_len = 0, channel, energy_a, energy_b;
        size_t desc_size;
        struct iwl_mvm_rx_phy_data phy_data = {
                .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
        };
        u32 format;
        bool is_sgi;

        if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
                return;

        if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
                desc_size = sizeof(*desc);
        else
                desc_size = IWL_RX_DESC_SIZE_V1;

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

        if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
                rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
                channel = desc->v3.channel;
                gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
                energy_a = desc->v3.energy_a;
                energy_b = desc->v3.energy_b;

                phy_data.d0 = desc->v3.phy_data0;
                phy_data.d1 = desc->v3.phy_data1;
                phy_data.d2 = desc->v3.phy_data2;
                phy_data.d3 = desc->v3.phy_data3;
        } else {
                rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
                channel = desc->v1.channel;
                gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
                energy_a = desc->v1.energy_a;
                energy_b = desc->v1.energy_b;

                phy_data.d0 = desc->v1.phy_data0;
                phy_data.d1 = desc->v1.phy_data1;
                phy_data.d2 = desc->v1.phy_data2;
                phy_data.d3 = desc->v1.phy_data3;
        }
        if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
                                    REPLY_RX_MPDU_CMD, 0) < 4) {
                rate_n_flags = iwl_new_rate_from_v1(rate_n_flags);
                IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
                               rate_n_flags);
        }
        format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;

        len = le16_to_cpu(desc->mpdu_len);

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

        phy_info = le16_to_cpu(desc->phy_info);
        phy_data.d4 = desc->phy_data4;

        if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
                phy_data.info_type =
                        le32_get_bits(phy_data.d1,
                                      IWL_RX_PHY_DATA1_INFO_TYPE_MASK);

        hdr = (void *)(pkt->data + desc_size);
        /* 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;
        }

        if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
                /*
                 * If the device inserted padding it means that (it thought)
                 * the 802.11 header wasn't a multiple of 4 bytes long. In
                 * this case, reserve two bytes at the start of the SKB to
                 * align the payload properly in case we end up copying it.
                 */
                skb_reserve(skb, 2);
        }

        rx_status = IEEE80211_SKB_RXCB(skb);

        /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
        switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
        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 (format == RATE_MCS_HE_MSK)
                iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
                              phy_info, queue);

        iwl_mvm_decode_lsig(skb, &phy_data);

        /*
         * Keep packets with CRC errors (and with overrun) for monitor mode
         * (otherwise the firmware discards them) but mark them as bad.
         */
        if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
            !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
                IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
                             le32_to_cpu(desc->status));
                rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
        }
        /* set the preamble flag if appropriate */
        if (format == RATE_MCS_CCK_MSK &&
            phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
                rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;

        if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
                u64 tsf_on_air_rise;

                if (mvm->trans->trans_cfg->device_family >=
                    IWL_DEVICE_FAMILY_AX210)
                        tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
                else
                        tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);

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

        rx_status->device_timestamp = gp2_on_air_rise;
        if (iwl_mvm_is_band_in_rx_supported(mvm)) {
                u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);

                rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band);
        } else {
                rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
                        NL80211_BAND_2GHZ;
        }
        rx_status->freq = ieee80211_channel_to_frequency(channel,
                                                         rx_status->band);
        iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
                                    energy_b);

        /* update aggregation data for monitor sake on default queue */
        if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
                bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;

                rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
                /*
                 * Toggle is switched whenever new aggregation starts. Make
                 * sure ampdu_reference is never 0 so we can later use it to
                 * see if the frame was really part of an A-MPDU or not.
                 */
                if (toggle_bit != mvm->ampdu_toggle) {
                        mvm->ampdu_ref++;
                        if (mvm->ampdu_ref == 0)
                                mvm->ampdu_ref++;
                        mvm->ampdu_toggle = toggle_bit;
                }
                rx_status->ampdu_reference = mvm->ampdu_ref;
        }

        if (unlikely(mvm->monitor_on))
                iwl_mvm_add_rtap_sniffer_config(mvm, skb);

        rcu_read_lock();

        if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
                u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);

                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 (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_info, desc,
                              le32_to_cpu(pkt->len_n_flags), queue,
                              &crypt_len)) {
                kfree_skb(skb);
                goto out;
        }

        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);
                u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
                               IWL_RX_MPDU_REORDER_BAID_MASK) >>
                               IWL_RX_MPDU_REORDER_BAID_SHIFT);
                struct iwl_fw_dbg_trigger_tlv *trig;
                struct ieee80211_vif *vif = mvmsta->vif;

                if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
                    !is_multicast_ether_addr(hdr->addr1) &&
                    ieee80211_is_data(hdr->frame_control) &&
                    time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
                        schedule_delayed_work(&mvm->tcm.work, 0);

                /*
                 * 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) && tx_blocked_vif == vif) {
                        struct iwl_mvm_vif *mvmvif =
                                iwl_mvm_vif_from_mac80211(tx_blocked_vif);
                        struct iwl_rx_sta_csa rx_sta_csa = {
                                .all_sta_unblocked = true,
                                .vif = tx_blocked_vif,
                        };

                        if (mvmvif->csa_target_freq == rx_status->freq)
                                iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
                                                                 false);
                        ieee80211_iterate_stations_atomic(mvm->hw,
                                                          iwl_mvm_rx_get_sta_block_tx,
                                                          &rx_sta_csa);

                        if (rx_sta_csa.all_sta_unblocked) {
                                RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
                                /* Unblock BCAST / MCAST station */
                                iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
                                cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
                        }
                }

                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 (ieee80211_is_data(hdr->frame_control))
                        iwl_mvm_rx_csum(mvm, sta, skb, pkt);

                if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
                        kfree_skb(skb);
                        goto out;
                }

                /*
                 * Our hardware de-aggregates AMSDUs but copies the mac header
                 * as it to the de-aggregated MPDUs. We need to turn off the
                 * AMSDU bit in the QoS control ourselves.
                 * In addition, HW reverses addr3 and addr4 - reverse it back.
                 */
                if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
                    !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
                        u8 *qc = ieee80211_get_qos_ctl(hdr);

                        *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;

                        if (mvm->trans->trans_cfg->device_family ==
                            IWL_DEVICE_FAMILY_9000) {
                                iwl_mvm_flip_address(hdr->addr3);

                                if (ieee80211_has_a4(hdr->frame_control))
                                        iwl_mvm_flip_address(hdr->addr4);
                        }
                }
                if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
                        u32 reorder_data = le32_to_cpu(desc->reorder_data);

                        iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
                }
        }

        is_sgi = format == RATE_MCS_HE_MSK ?
                iwl_he_is_sgi(rate_n_flags) :
                rate_n_flags & RATE_MCS_SGI_MSK;

        if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
                rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
        if (rate_n_flags & RATE_MCS_LDPC_MSK)
                rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
        if (format == RATE_MCS_HT_MSK) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                        RATE_MCS_STBC_POS;
                rx_status->encoding = RX_ENC_HT;
                rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
                rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
        } else if (format == RATE_MCS_VHT_MSK) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                        RATE_MCS_STBC_POS;
                        rx_status->nss =
                        ((rate_n_flags & RATE_MCS_NSS_MSK) >>
                        RATE_MCS_NSS_POS) + 1;
                rx_status->rate_idx = rate_n_flags & RATE_MCS_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 if (!(format == RATE_MCS_HE_MSK)) {
                int rate = iwl_mvm_legacy_hw_idx_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);
                        goto out;
                }
                rx_status->rate_idx = rate;
        }

        /* management stuff on default queue */
        if (!queue) {
                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();
        }

        if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
                kfree_skb(skb);
                goto out;

        }

        if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
                iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
                                                sta);
out:
        rcu_read_unlock();
}

void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
                                struct iwl_rx_cmd_buffer *rxb, int queue)
{
        struct ieee80211_rx_status *rx_status;
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_rx_no_data *desc = (void *)pkt->data;
        u32 rate_n_flags = le32_to_cpu(desc->rate);
        u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
        u32 rssi = le32_to_cpu(desc->rssi);
        u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
        u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
        struct ieee80211_sta *sta = NULL;
        struct sk_buff *skb;
        u8 channel, energy_a, energy_b;
        u32 format;
        struct iwl_mvm_rx_phy_data phy_data = {
                .info_type = le32_get_bits(desc->phy_info[1],
                                           IWL_RX_PHY_DATA1_INFO_TYPE_MASK),
                .d0 = desc->phy_info[0],
                .d1 = desc->phy_info[1],
        };
        bool is_sgi;

        if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
                                    RX_NO_DATA_NOTIF, 0) < 2) {
                IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
                               rate_n_flags);
                rate_n_flags = iwl_new_rate_from_v1(rate_n_flags);
                IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
                               rate_n_flags);
        }
        format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;

        if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*desc)))
                return;

        if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
                return;

        energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
        energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
        channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;

        /* 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);

        /* 0-length PSDU */
        rx_status->flag |= RX_FLAG_NO_PSDU;

        switch (info_type) {
        case RX_NO_DATA_INFO_TYPE_NDP:
                rx_status->zero_length_psdu_type =
                        IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
                break;
        case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
        case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED:
                rx_status->zero_length_psdu_type =
                        IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
                break;
        default:
                rx_status->zero_length_psdu_type =
                        IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
                break;
        }

        /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
        switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
        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 (format == RATE_MCS_HE_MSK)
                iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
                              phy_info, queue);

        iwl_mvm_decode_lsig(skb, &phy_data);

        rx_status->device_timestamp = gp2_on_air_rise;
        rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
                NL80211_BAND_2GHZ;
        rx_status->freq = ieee80211_channel_to_frequency(channel,
                                                         rx_status->band);
        iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
                                    energy_b);

        rcu_read_lock();

        is_sgi = format == RATE_MCS_HE_MSK ?
                iwl_he_is_sgi(rate_n_flags) :
                rate_n_flags & RATE_MCS_SGI_MSK;

        if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
                rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
        if (rate_n_flags & RATE_MCS_LDPC_MSK)
                rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
        if (format == RATE_MCS_HT_MSK) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                                RATE_MCS_STBC_POS;
                rx_status->encoding = RX_ENC_HT;
                rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
                rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
        } else if (format == RATE_MCS_VHT_MSK) {
                u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
                                RATE_MCS_STBC_POS;
                rx_status->rate_idx = rate_n_flags & RATE_MCS_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;
                /*
                 * take the nss from the rx_vec since the rate_n_flags has
                 * only 2 bits for the nss which gives a max of 4 ss but
                 * there may be up to 8 spatial streams
                 */
                rx_status->nss =
                        le32_get_bits(desc->rx_vec[0],
                                      RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
        } else if (format == RATE_MCS_HE_MSK) {
                rx_status->nss =
                        le32_get_bits(desc->rx_vec[0],
                                      RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
        } else {
                int rate = iwl_mvm_legacy_hw_idx_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);
                        goto out;
                }
                rx_status->rate_idx = rate;
        }

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

void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
                              struct iwl_rx_cmd_buffer *rxb, int queue)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_frame_release *release = (void *)pkt->data;

        if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
                return;

        iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
                                          le16_to_cpu(release->nssn),
                                          queue, 0);
}

void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
                                  struct iwl_rx_cmd_buffer *rxb, int queue)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_bar_frame_release *release = (void *)pkt->data;
        unsigned int baid = le32_get_bits(release->ba_info,
                                          IWL_BAR_FRAME_RELEASE_BAID_MASK);
        unsigned int nssn = le32_get_bits(release->ba_info,
                                          IWL_BAR_FRAME_RELEASE_NSSN_MASK);
        unsigned int sta_id = le32_get_bits(release->sta_tid,
                                            IWL_BAR_FRAME_RELEASE_STA_MASK);
        unsigned int tid = le32_get_bits(release->sta_tid,
                                         IWL_BAR_FRAME_RELEASE_TID_MASK);
        struct iwl_mvm_baid_data *baid_data;

        if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
                return;

        if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
                         baid >= ARRAY_SIZE(mvm->baid_map)))
                return;

        rcu_read_lock();
        baid_data = rcu_dereference(mvm->baid_map[baid]);
        if (!baid_data) {
                IWL_DEBUG_RX(mvm,
                             "Got valid BAID %d but not allocated, invalid BAR release!\n",
                              baid);
                goto out;
        }

        if (WARN(tid != baid_data->tid || sta_id != baid_data->sta_id,
                 "baid 0x%x is mapped to sta:%d tid:%d, but BAR release received for sta:%d tid:%d\n",
                 baid, baid_data->sta_id, baid_data->tid, sta_id,
                 tid))
                goto out;

        iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0);
out:
        rcu_read_unlock();
}