OSCL-LXR linux-6.0.1/​drivers/​net/​wireless/​ath/​ath10k/​htt_rx.c	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: ISC
 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
  */
 
 #include "core.h"
 #include "htc.h"
 #include "htt.h"
 #include "txrx.h"
 #include "debug.h"
 #include "trace.h"
 #include "mac.h"
 
 #include <linux/log2.h>
 #include <linux/bitfield.h>
 
 /* when under memory pressure rx ring refill may fail and needs a retry */
 #define HTT_RX_RING_REFILL_RETRY_MS 50
 
 #define HTT_RX_RING_REFILL_RESCHED_MS 5
 
 /* shortcut to interpret a raw memory buffer as a rx descriptor */
 #define HTT_RX_BUF_TO_RX_DESC(hw, buf) ath10k_htt_rx_desc_from_raw_buffer(hw, buf)
 
 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb);
 
 static struct sk_buff *
 ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr)
 {
     struct ath10k_skb_rxcb *rxcb;
 
     hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr)
         if (rxcb->paddr == paddr)
             return ATH10K_RXCB_SKB(rxcb);
 
     WARN_ON_ONCE(1);
     return NULL;
 }
 
 static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt)
 {
     struct sk_buff *skb;
     struct ath10k_skb_rxcb *rxcb;
     struct hlist_node *n;
     int i;
 
     if (htt->rx_ring.in_ord_rx) {
         hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) {
             skb = ATH10K_RXCB_SKB(rxcb);
             dma_unmap_single(htt->ar->dev, rxcb->paddr,
                      skb->len + skb_tailroom(skb),
                      DMA_FROM_DEVICE);
             hash_del(&rxcb->hlist);
             dev_kfree_skb_any(skb);
         }
     } else {
         for (i = 0; i < htt->rx_ring.size; i++) {
             skb = htt->rx_ring.netbufs_ring[i];
             if (!skb)
                 continue;
 
             rxcb = ATH10K_SKB_RXCB(skb);
             dma_unmap_single(htt->ar->dev, rxcb->paddr,
                      skb->len + skb_tailroom(skb),
                      DMA_FROM_DEVICE);
             dev_kfree_skb_any(skb);
         }
     }
 
     htt->rx_ring.fill_cnt = 0;
     hash_init(htt->rx_ring.skb_table);
     memset(htt->rx_ring.netbufs_ring, 0,
            htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0]));
 }
 
 static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt)
 {
     return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32);
 }
 
 static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt)
 {
     return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64);
 }
 
 static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt,
                          void *vaddr)
 {
     htt->rx_ring.paddrs_ring_32 = vaddr;
 }
 
 static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt,
                          void *vaddr)
 {
     htt->rx_ring.paddrs_ring_64 = vaddr;
 }
 
 static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt,
                       dma_addr_t paddr, int idx)
 {
     htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr);
 }
 
 static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt,
                       dma_addr_t paddr, int idx)
 {
     htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr);
 }
 
 static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx)
 {
     htt->rx_ring.paddrs_ring_32[idx] = 0;
 }
 
 static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx)
 {
     htt->rx_ring.paddrs_ring_64[idx] = 0;
 }
 
 static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt)
 {
     return (void *)htt->rx_ring.paddrs_ring_32;
 }
 
 static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt)
 {
     return (void *)htt->rx_ring.paddrs_ring_64;
 }
 
 static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
 {
     struct ath10k_hw_params *hw = &htt->ar->hw_params;
     struct htt_rx_desc *rx_desc;
     struct ath10k_skb_rxcb *rxcb;
     struct sk_buff *skb;
     dma_addr_t paddr;
     int ret = 0, idx;
 
     /* The Full Rx Reorder firmware has no way of telling the host
      * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring.
      * To keep things simple make sure ring is always half empty. This
      * guarantees there'll be no replenishment overruns possible.
      */
     BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2);
 
     idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
 
     if (idx < 0 || idx >= htt->rx_ring.size) {
         ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n");
         idx &= htt->rx_ring.size_mask;
         ret = -ENOMEM;
         goto fail;
     }
 
     while (num > 0) {
         skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN);
         if (!skb) {
             ret = -ENOMEM;
             goto fail;
         }
 
         if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN))
             skb_pull(skb,
                  PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) -
                  skb->data);
 
         /* Clear rx_desc attention word before posting to Rx ring */
         rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, skb->data);
         ath10k_htt_rx_desc_get_attention(hw, rx_desc)->flags = __cpu_to_le32(0);
 
         paddr = dma_map_single(htt->ar->dev, skb->data,
                        skb->len + skb_tailroom(skb),
                        DMA_FROM_DEVICE);
 
         if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) {
             dev_kfree_skb_any(skb);
             ret = -ENOMEM;
             goto fail;
         }
 
         rxcb = ATH10K_SKB_RXCB(skb);
         rxcb->paddr = paddr;
         htt->rx_ring.netbufs_ring[idx] = skb;
         ath10k_htt_set_paddrs_ring(htt, paddr, idx);
         htt->rx_ring.fill_cnt++;
 
         if (htt->rx_ring.in_ord_rx) {
             hash_add(htt->rx_ring.skb_table,
                  &ATH10K_SKB_RXCB(skb)->hlist,
                  paddr);
         }
 
         num--;
         idx++;
         idx &= htt->rx_ring.size_mask;
     }
 
 fail:
     /*
      * Make sure the rx buffer is updated before available buffer
      * index to avoid any potential rx ring corruption.
      */
     mb();
     *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx);
     return ret;
 }
 
 static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
 {
     lockdep_assert_held(&htt->rx_ring.lock);
     return __ath10k_htt_rx_ring_fill_n(htt, num);
 }
 
 static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt)
 {
     int ret, num_deficit, num_to_fill;
 
     /* Refilling the whole RX ring buffer proves to be a bad idea. The
      * reason is RX may take up significant amount of CPU cycles and starve
      * other tasks, e.g. TX on an ethernet device while acting as a bridge
      * with ath10k wlan interface. This ended up with very poor performance
      * once CPU the host system was overwhelmed with RX on ath10k.
      *
      * By limiting the number of refills the replenishing occurs
      * progressively. This in turns makes use of the fact tasklets are
      * processed in FIFO order. This means actual RX processing can starve
      * out refilling. If there's not enough buffers on RX ring FW will not
      * report RX until it is refilled with enough buffers. This
      * automatically balances load wrt to CPU power.
      *
      * This probably comes at a cost of lower maximum throughput but
      * improves the average and stability.
      */
     spin_lock_bh(&htt->rx_ring.lock);
     num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt;
     num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit);
     num_deficit -= num_to_fill;
     ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill);
     if (ret == -ENOMEM) {
         /*
          * Failed to fill it to the desired level -
          * we'll start a timer and try again next time.
          * As long as enough buffers are left in the ring for
          * another A-MPDU rx, no special recovery is needed.
          */
         mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
               msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS));
     } else if (num_deficit > 0) {
         mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
               msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS));
     }
     spin_unlock_bh(&htt->rx_ring.lock);
 }
 
 static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t)
 {
     struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer);
 
     ath10k_htt_rx_msdu_buff_replenish(htt);
 }
 
 int ath10k_htt_rx_ring_refill(struct ath10k *ar)
 {
     struct ath10k_htt *htt = &ar->htt;
     int ret;
 
     if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
         return 0;
 
     spin_lock_bh(&htt->rx_ring.lock);
     ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level -
                           htt->rx_ring.fill_cnt));
 
     if (ret)
         ath10k_htt_rx_ring_free(htt);
 
     spin_unlock_bh(&htt->rx_ring.lock);
 
     return ret;
 }
 
 void ath10k_htt_rx_free(struct ath10k_htt *htt)
 {
     if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
         return;
 
     del_timer_sync(&htt->rx_ring.refill_retry_timer);
 
     skb_queue_purge(&htt->rx_msdus_q);
     skb_queue_purge(&htt->rx_in_ord_compl_q);
     skb_queue_purge(&htt->tx_fetch_ind_q);
 
     spin_lock_bh(&htt->rx_ring.lock);
     ath10k_htt_rx_ring_free(htt);
     spin_unlock_bh(&htt->rx_ring.lock);
 
     dma_free_coherent(htt->ar->dev,
               ath10k_htt_get_rx_ring_size(htt),
               ath10k_htt_get_vaddr_ring(htt),
               htt->rx_ring.base_paddr);
 
     dma_free_coherent(htt->ar->dev,
               sizeof(*htt->rx_ring.alloc_idx.vaddr),
               htt->rx_ring.alloc_idx.vaddr,
               htt->rx_ring.alloc_idx.paddr);
 
     kfree(htt->rx_ring.netbufs_ring);
 }
 
 static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt)
 {
     struct ath10k *ar = htt->ar;
     int idx;
     struct sk_buff *msdu;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     if (htt->rx_ring.fill_cnt == 0) {
         ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n");
         return NULL;
     }
 
     idx = htt->rx_ring.sw_rd_idx.msdu_payld;
     msdu = htt->rx_ring.netbufs_ring[idx];
     htt->rx_ring.netbufs_ring[idx] = NULL;
     ath10k_htt_reset_paddrs_ring(htt, idx);
 
     idx++;
     idx &= htt->rx_ring.size_mask;
     htt->rx_ring.sw_rd_idx.msdu_payld = idx;
     htt->rx_ring.fill_cnt--;
 
     dma_unmap_single(htt->ar->dev,
              ATH10K_SKB_RXCB(msdu)->paddr,
              msdu->len + skb_tailroom(msdu),
              DMA_FROM_DEVICE);
     ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
             msdu->data, msdu->len + skb_tailroom(msdu));
 
     return msdu;
 }
 
 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
                    struct sk_buff_head *amsdu)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_hw_params *hw = &ar->hw_params;
     int msdu_len, msdu_chaining = 0;
     struct sk_buff *msdu;
     struct htt_rx_desc *rx_desc;
     struct rx_attention *rx_desc_attention;
     struct rx_frag_info_common *rx_desc_frag_info_common;
     struct rx_msdu_start_common *rx_desc_msdu_start_common;
     struct rx_msdu_end_common *rx_desc_msdu_end_common;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     for (;;) {
         int last_msdu, msdu_len_invalid, msdu_chained;
 
         msdu = ath10k_htt_rx_netbuf_pop(htt);
         if (!msdu) {
             __skb_queue_purge(amsdu);
             return -ENOENT;
         }
 
         __skb_queue_tail(amsdu, msdu);
 
         rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
         rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc);
         rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw,
                                           rx_desc);
         rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc);
         rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc);
 
         /* FIXME: we must report msdu payload since this is what caller
          * expects now
          */
         skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
         skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
 
         /*
          * Sanity check - confirm the HW is finished filling in the
          * rx data.
          * If the HW and SW are working correctly, then it's guaranteed
          * that the HW's MAC DMA is done before this point in the SW.
          * To prevent the case that we handle a stale Rx descriptor,
          * just assert for now until we have a way to recover.
          */
         if (!(__le32_to_cpu(rx_desc_attention->flags)
                 & RX_ATTENTION_FLAGS_MSDU_DONE)) {
             __skb_queue_purge(amsdu);
             return -EIO;
         }
 
         msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags)
                     & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR |
                        RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR));
         msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0),
                   RX_MSDU_START_INFO0_MSDU_LENGTH);
         msdu_chained = rx_desc_frag_info_common->ring2_more_count;
 
         if (msdu_len_invalid)
             msdu_len = 0;
 
         skb_trim(msdu, 0);
         skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw)));
         msdu_len -= msdu->len;
 
         /* Note: Chained buffers do not contain rx descriptor */
         while (msdu_chained--) {
             msdu = ath10k_htt_rx_netbuf_pop(htt);
             if (!msdu) {
                 __skb_queue_purge(amsdu);
                 return -ENOENT;
             }
 
             __skb_queue_tail(amsdu, msdu);
             skb_trim(msdu, 0);
             skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE));
             msdu_len -= msdu->len;
             msdu_chaining = 1;
         }
 
         last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) &
                 RX_MSDU_END_INFO0_LAST_MSDU;
 
         /* FIXME: why are we skipping the first part of the rx_desc? */
         trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32),
                      hw->rx_desc_ops->rx_desc_size - sizeof(u32));
 
         if (last_msdu)
             break;
     }
 
     if (skb_queue_empty(amsdu))
         msdu_chaining = -1;
 
     /*
      * Don't refill the ring yet.
      *
      * First, the elements popped here are still in use - it is not
      * safe to overwrite them until the matching call to
      * mpdu_desc_list_next. Second, for efficiency it is preferable to
      * refill the rx ring with 1 PPDU's worth of rx buffers (something
      * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers
      * (something like 3 buffers). Consequently, we'll rely on the txrx
      * SW to tell us when it is done pulling all the PPDU's rx buffers
      * out of the rx ring, and then refill it just once.
      */
 
     return msdu_chaining;
 }
 
 static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt,
                            u64 paddr)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_skb_rxcb *rxcb;
     struct sk_buff *msdu;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr);
     if (!msdu)
         return NULL;
 
     rxcb = ATH10K_SKB_RXCB(msdu);
     hash_del(&rxcb->hlist);
     htt->rx_ring.fill_cnt--;
 
     dma_unmap_single(htt->ar->dev, rxcb->paddr,
              msdu->len + skb_tailroom(msdu),
              DMA_FROM_DEVICE);
     ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
             msdu->data, msdu->len + skb_tailroom(msdu));
 
     return msdu;
 }
 
 static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head,
                            struct sk_buff *frag_list,
                            unsigned int frag_len)
 {
     skb_shinfo(skb_head)->frag_list = frag_list;
     skb_head->data_len = frag_len;
     skb_head->len += skb_head->data_len;
 }
 
 static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt,
                          struct sk_buff *msdu,
                          struct htt_rx_in_ord_msdu_desc **msdu_desc)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_hw_params *hw = &ar->hw_params;
     u32 paddr;
     struct sk_buff *frag_buf;
     struct sk_buff *prev_frag_buf;
     u8 last_frag;
     struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc;
     struct htt_rx_desc *rxd;
     int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
     trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
 
     skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
     skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
     skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
     amsdu_len -= msdu->len;
 
     last_frag = ind_desc->reserved;
     if (last_frag) {
         if (amsdu_len) {
             ath10k_warn(ar, "invalid amsdu len %u, left %d",
                     __le16_to_cpu(ind_desc->msdu_len),
                     amsdu_len);
         }
         return 0;
     }
 
     ind_desc++;
     paddr = __le32_to_cpu(ind_desc->msdu_paddr);
     frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
     if (!frag_buf) {
         ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr);
         return -ENOENT;
     }
 
     skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
     ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
 
     amsdu_len -= frag_buf->len;
     prev_frag_buf = frag_buf;
     last_frag = ind_desc->reserved;
     while (!last_frag) {
         ind_desc++;
         paddr = __le32_to_cpu(ind_desc->msdu_paddr);
         frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
         if (!frag_buf) {
             ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x",
                     paddr);
             prev_frag_buf->next = NULL;
             return -ENOENT;
         }
 
         skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
         last_frag = ind_desc->reserved;
         amsdu_len -= frag_buf->len;
 
         prev_frag_buf->next = frag_buf;
         prev_frag_buf = frag_buf;
     }
 
     if (amsdu_len) {
         ath10k_warn(ar, "invalid amsdu len %u, left %d",
                 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
     }
 
     *msdu_desc = ind_desc;
 
     prev_frag_buf->next = NULL;
     return 0;
 }
 
 static int
 ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt,
                   struct sk_buff *msdu,
                   struct htt_rx_in_ord_msdu_desc_ext **msdu_desc)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_hw_params *hw = &ar->hw_params;
     u64 paddr;
     struct sk_buff *frag_buf;
     struct sk_buff *prev_frag_buf;
     u8 last_frag;
     struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc;
     struct htt_rx_desc *rxd;
     int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
     trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
 
     skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
     skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
     skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
     amsdu_len -= msdu->len;
 
     last_frag = ind_desc->reserved;
     if (last_frag) {
         if (amsdu_len) {
             ath10k_warn(ar, "invalid amsdu len %u, left %d",
                     __le16_to_cpu(ind_desc->msdu_len),
                     amsdu_len);
         }
         return 0;
     }
 
     ind_desc++;
     paddr = __le64_to_cpu(ind_desc->msdu_paddr);
     frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
     if (!frag_buf) {
         ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr);
         return -ENOENT;
     }
 
     skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
     ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
 
     amsdu_len -= frag_buf->len;
     prev_frag_buf = frag_buf;
     last_frag = ind_desc->reserved;
     while (!last_frag) {
         ind_desc++;
         paddr = __le64_to_cpu(ind_desc->msdu_paddr);
         frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
         if (!frag_buf) {
             ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx",
                     paddr);
             prev_frag_buf->next = NULL;
             return -ENOENT;
         }
 
         skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
         last_frag = ind_desc->reserved;
         amsdu_len -= frag_buf->len;
 
         prev_frag_buf->next = frag_buf;
         prev_frag_buf = frag_buf;
     }
 
     if (amsdu_len) {
         ath10k_warn(ar, "invalid amsdu len %u, left %d",
                 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
     }
 
     *msdu_desc = ind_desc;
 
     prev_frag_buf->next = NULL;
     return 0;
 }
 
 static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt,
                       struct htt_rx_in_ord_ind *ev,
                       struct sk_buff_head *list)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32;
     struct htt_rx_desc *rxd;
     struct rx_attention *rxd_attention;
     struct sk_buff *msdu;
     int msdu_count, ret;
     bool is_offload;
     u32 paddr;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     msdu_count = __le16_to_cpu(ev->msdu_count);
     is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
 
     while (msdu_count--) {
         paddr = __le32_to_cpu(msdu_desc->msdu_paddr);
 
         msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
         if (!msdu) {
             __skb_queue_purge(list);
             return -ENOENT;
         }
 
         if (!is_offload && ar->monitor_arvif) {
             ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu,
                                 &msdu_desc);
             if (ret) {
                 __skb_queue_purge(list);
                 return ret;
             }
             __skb_queue_tail(list, msdu);
             msdu_desc++;
             continue;
         }
 
         __skb_queue_tail(list, msdu);
 
         if (!is_offload) {
             rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
             rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
 
             trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
 
             skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
             skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
             skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
 
             if (!(__le32_to_cpu(rxd_attention->flags) &
                   RX_ATTENTION_FLAGS_MSDU_DONE)) {
                 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
                 return -EIO;
             }
         }
 
         msdu_desc++;
     }
 
     return 0;
 }
 
 static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt,
                       struct htt_rx_in_ord_ind *ev,
                       struct sk_buff_head *list)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64;
     struct htt_rx_desc *rxd;
     struct rx_attention *rxd_attention;
     struct sk_buff *msdu;
     int msdu_count, ret;
     bool is_offload;
     u64 paddr;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     msdu_count = __le16_to_cpu(ev->msdu_count);
     is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
 
     while (msdu_count--) {
         paddr = __le64_to_cpu(msdu_desc->msdu_paddr);
         msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
         if (!msdu) {
             __skb_queue_purge(list);
             return -ENOENT;
         }
 
         if (!is_offload && ar->monitor_arvif) {
             ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu,
                                 &msdu_desc);
             if (ret) {
                 __skb_queue_purge(list);
                 return ret;
             }
             __skb_queue_tail(list, msdu);
             msdu_desc++;
             continue;
         }
 
         __skb_queue_tail(list, msdu);
 
         if (!is_offload) {
             rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
             rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
 
             trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
 
             skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
             skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
             skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
 
             if (!(__le32_to_cpu(rxd_attention->flags) &
                   RX_ATTENTION_FLAGS_MSDU_DONE)) {
                 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
                 return -EIO;
             }
         }
 
         msdu_desc++;
     }
 
     return 0;
 }
 
 int ath10k_htt_rx_alloc(struct ath10k_htt *htt)
 {
     struct ath10k *ar = htt->ar;
     dma_addr_t paddr;
     void *vaddr, *vaddr_ring;
     size_t size;
     struct timer_list *timer = &htt->rx_ring.refill_retry_timer;
 
     if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
         return 0;
 
     htt->rx_confused = false;
 
     /* XXX: The fill level could be changed during runtime in response to
      * the host processing latency. Is this really worth it?
      */
     htt->rx_ring.size = HTT_RX_RING_SIZE;
     htt->rx_ring.size_mask = htt->rx_ring.size - 1;
     htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level;
 
     if (!is_power_of_2(htt->rx_ring.size)) {
         ath10k_warn(ar, "htt rx ring size is not power of 2\n");
         return -EINVAL;
     }
 
     htt->rx_ring.netbufs_ring =
         kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *),
             GFP_KERNEL);
     if (!htt->rx_ring.netbufs_ring)
         goto err_netbuf;
 
     size = ath10k_htt_get_rx_ring_size(htt);
 
     vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL);
     if (!vaddr_ring)
         goto err_dma_ring;
 
     ath10k_htt_config_paddrs_ring(htt, vaddr_ring);
     htt->rx_ring.base_paddr = paddr;
 
     vaddr = dma_alloc_coherent(htt->ar->dev,
                    sizeof(*htt->rx_ring.alloc_idx.vaddr),
                    &paddr, GFP_KERNEL);
     if (!vaddr)
         goto err_dma_idx;
 
     htt->rx_ring.alloc_idx.vaddr = vaddr;
     htt->rx_ring.alloc_idx.paddr = paddr;
     htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask;
     *htt->rx_ring.alloc_idx.vaddr = 0;
 
     /* Initialize the Rx refill retry timer */
     timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0);
 
     spin_lock_init(&htt->rx_ring.lock);
 
     htt->rx_ring.fill_cnt = 0;
     htt->rx_ring.sw_rd_idx.msdu_payld = 0;
     hash_init(htt->rx_ring.skb_table);
 
     skb_queue_head_init(&htt->rx_msdus_q);
     skb_queue_head_init(&htt->rx_in_ord_compl_q);
     skb_queue_head_init(&htt->tx_fetch_ind_q);
     atomic_set(&htt->num_mpdus_ready, 0);
 
     ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n",
            htt->rx_ring.size, htt->rx_ring.fill_level);
     return 0;
 
 err_dma_idx:
     dma_free_coherent(htt->ar->dev,
               ath10k_htt_get_rx_ring_size(htt),
               vaddr_ring,
               htt->rx_ring.base_paddr);
 err_dma_ring:
     kfree(htt->rx_ring.netbufs_ring);
 err_netbuf:
     return -ENOMEM;
 }
 
 static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar,
                       enum htt_rx_mpdu_encrypt_type type)
 {
     switch (type) {
     case HTT_RX_MPDU_ENCRYPT_NONE:
         return 0;
     case HTT_RX_MPDU_ENCRYPT_WEP40:
     case HTT_RX_MPDU_ENCRYPT_WEP104:
         return IEEE80211_WEP_IV_LEN;
     case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
     case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
         return IEEE80211_TKIP_IV_LEN;
     case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
         return IEEE80211_CCMP_HDR_LEN;
     case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
         return IEEE80211_CCMP_256_HDR_LEN;
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
         return IEEE80211_GCMP_HDR_LEN;
     case HTT_RX_MPDU_ENCRYPT_WEP128:
     case HTT_RX_MPDU_ENCRYPT_WAPI:
         break;
     }
 
     ath10k_warn(ar, "unsupported encryption type %d\n", type);
     return 0;
 }
 
 #define MICHAEL_MIC_LEN 8
 
 static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar,
                     enum htt_rx_mpdu_encrypt_type type)
 {
     switch (type) {
     case HTT_RX_MPDU_ENCRYPT_NONE:
     case HTT_RX_MPDU_ENCRYPT_WEP40:
     case HTT_RX_MPDU_ENCRYPT_WEP104:
     case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
     case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
         return 0;
     case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
         return IEEE80211_CCMP_MIC_LEN;
     case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
         return IEEE80211_CCMP_256_MIC_LEN;
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
         return IEEE80211_GCMP_MIC_LEN;
     case HTT_RX_MPDU_ENCRYPT_WEP128:
     case HTT_RX_MPDU_ENCRYPT_WAPI:
         break;
     }
 
     ath10k_warn(ar, "unsupported encryption type %d\n", type);
     return 0;
 }
 
 static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar,
                     enum htt_rx_mpdu_encrypt_type type)
 {
     switch (type) {
     case HTT_RX_MPDU_ENCRYPT_NONE:
     case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
     case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
     case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
         return 0;
     case HTT_RX_MPDU_ENCRYPT_WEP40:
     case HTT_RX_MPDU_ENCRYPT_WEP104:
         return IEEE80211_WEP_ICV_LEN;
     case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
     case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
         return IEEE80211_TKIP_ICV_LEN;
     case HTT_RX_MPDU_ENCRYPT_WEP128:
     case HTT_RX_MPDU_ENCRYPT_WAPI:
         break;
     }
 
     ath10k_warn(ar, "unsupported encryption type %d\n", type);
     return 0;
 }
 
 struct amsdu_subframe_hdr {
     u8 dst[ETH_ALEN];
     u8 src[ETH_ALEN];
     __be16 len;
 } __packed;
 
 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
 
 static inline u8 ath10k_bw_to_mac80211_bw(u8 bw)
 {
     u8 ret = 0;
 
     switch (bw) {
     case 0:
         ret = RATE_INFO_BW_20;
         break;
     case 1:
         ret = RATE_INFO_BW_40;
         break;
     case 2:
         ret = RATE_INFO_BW_80;
         break;
     case 3:
         ret = RATE_INFO_BW_160;
         break;
     }
 
     return ret;
 }
 
 static void ath10k_htt_rx_h_rates(struct ath10k *ar,
                   struct ieee80211_rx_status *status,
                   struct htt_rx_desc *rxd)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct rx_attention *rxd_attention;
     struct rx_mpdu_start *rxd_mpdu_start;
     struct rx_mpdu_end *rxd_mpdu_end;
     struct rx_msdu_start_common *rxd_msdu_start_common;
     struct rx_msdu_end_common *rxd_msdu_end_common;
     struct rx_ppdu_start *rxd_ppdu_start;
     struct ieee80211_supported_band *sband;
     u8 cck, rate, bw, sgi, mcs, nss;
     u8 *rxd_msdu_payload;
     u8 preamble = 0;
     u8 group_id;
     u32 info1, info2, info3;
     u32 stbc, nsts_su;
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
     rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
     rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd);
     rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
     rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd);
 
     info1 = __le32_to_cpu(rxd_ppdu_start->info1);
     info2 = __le32_to_cpu(rxd_ppdu_start->info2);
     info3 = __le32_to_cpu(rxd_ppdu_start->info3);
 
     preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE);
 
     switch (preamble) {
     case HTT_RX_LEGACY:
         /* To get legacy rate index band is required. Since band can't
          * be undefined check if freq is non-zero.
          */
         if (!status->freq)
             return;
 
         cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT;
         rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE);
         rate &= ~RX_PPDU_START_RATE_FLAG;
 
         sband = &ar->mac.sbands[status->band];
         status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck);
         break;
     case HTT_RX_HT:
     case HTT_RX_HT_WITH_TXBF:
         /* HT-SIG - Table 20-11 in info2 and info3 */
         mcs = info2 & 0x1F;
         nss = mcs >> 3;
         bw = (info2 >> 7) & 1;
         sgi = (info3 >> 7) & 1;
 
         status->rate_idx = mcs;
         status->encoding = RX_ENC_HT;
         if (sgi)
             status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
         if (bw)
             status->bw = RATE_INFO_BW_40;
         break;
     case HTT_RX_VHT:
     case HTT_RX_VHT_WITH_TXBF:
         /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
          * TODO check this
          */
         bw = info2 & 3;
         sgi = info3 & 1;
         stbc = (info2 >> 3) & 1;
         group_id = (info2 >> 4) & 0x3F;
 
         if (GROUP_ID_IS_SU_MIMO(group_id)) {
             mcs = (info3 >> 4) & 0x0F;
             nsts_su = ((info2 >> 10) & 0x07);
             if (stbc)
                 nss = (nsts_su >> 2) + 1;
             else
                 nss = (nsts_su + 1);
         } else {
             /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
              * so it's impossible to decode MCS. Also since
              * firmware consumes Group Id Management frames host
              * has no knowledge regarding group/user position
              * mapping so it's impossible to pick the correct Nsts
              * from VHT-SIG-A1.
              *
              * Bandwidth and SGI are valid so report the rateinfo
              * on best-effort basis.
              */
             mcs = 0;
             nss = 1;
         }
 
         if (mcs > 0x09) {
             ath10k_warn(ar, "invalid MCS received %u\n", mcs);
             ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
                     __le32_to_cpu(rxd_attention->flags),
                     __le32_to_cpu(rxd_mpdu_start->info0),
                     __le32_to_cpu(rxd_mpdu_start->info1),
                     __le32_to_cpu(rxd_msdu_start_common->info0),
                     __le32_to_cpu(rxd_msdu_start_common->info1),
                     rxd_ppdu_start->info0,
                     __le32_to_cpu(rxd_ppdu_start->info1),
                     __le32_to_cpu(rxd_ppdu_start->info2),
                     __le32_to_cpu(rxd_ppdu_start->info3),
                     __le32_to_cpu(rxd_ppdu_start->info4));
 
             ath10k_warn(ar, "msdu end %08x mpdu end %08x\n",
                     __le32_to_cpu(rxd_msdu_end_common->info0),
                     __le32_to_cpu(rxd_mpdu_end->info0));
 
             ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL,
                     "rx desc msdu payload: ",
                     rxd_msdu_payload, 50);
         }
 
         status->rate_idx = mcs;
         status->nss = nss;
 
         if (sgi)
             status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
 
         status->bw = ath10k_bw_to_mac80211_bw(bw);
         status->encoding = RX_ENC_VHT;
         break;
     default:
         break;
     }
 }
 
 static struct ieee80211_channel *
 ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct rx_attention *rxd_attention;
     struct rx_msdu_end_common *rxd_msdu_end_common;
     struct rx_mpdu_start *rxd_mpdu_start;
     struct ath10k_peer *peer;
     struct ath10k_vif *arvif;
     struct cfg80211_chan_def def;
     u16 peer_id;
 
     lockdep_assert_held(&ar->data_lock);
 
     if (!rxd)
         return NULL;
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
 
     if (rxd_attention->flags &
         __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID))
         return NULL;
 
     if (!(rxd_msdu_end_common->info0 &
           __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)))
         return NULL;
 
     peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0),
              RX_MPDU_START_INFO0_PEER_IDX);
 
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer)
         return NULL;
 
     arvif = ath10k_get_arvif(ar, peer->vdev_id);
     if (WARN_ON_ONCE(!arvif))
         return NULL;
 
     if (ath10k_mac_vif_chan(arvif->vif, &def))
         return NULL;
 
     return def.chan;
 }
 
 static struct ieee80211_channel *
 ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id)
 {
     struct ath10k_vif *arvif;
     struct cfg80211_chan_def def;
 
     lockdep_assert_held(&ar->data_lock);
 
     list_for_each_entry(arvif, &ar->arvifs, list) {
         if (arvif->vdev_id == vdev_id &&
             ath10k_mac_vif_chan(arvif->vif, &def) == 0)
             return def.chan;
     }
 
     return NULL;
 }
 
 static void
 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw,
                   struct ieee80211_chanctx_conf *conf,
                   void *data)
 {
     struct cfg80211_chan_def *def = data;
 
     *def = conf->def;
 }
 
 static struct ieee80211_channel *
 ath10k_htt_rx_h_any_channel(struct ath10k *ar)
 {
     struct cfg80211_chan_def def = {};
 
     ieee80211_iter_chan_contexts_atomic(ar->hw,
                         ath10k_htt_rx_h_any_chan_iter,
                         &def);
 
     return def.chan;
 }
 
 static bool ath10k_htt_rx_h_channel(struct ath10k *ar,
                     struct ieee80211_rx_status *status,
                     struct htt_rx_desc *rxd,
                     u32 vdev_id)
 {
     struct ieee80211_channel *ch;
 
     spin_lock_bh(&ar->data_lock);
     ch = ar->scan_channel;
     if (!ch)
         ch = ar->rx_channel;
     if (!ch)
         ch = ath10k_htt_rx_h_peer_channel(ar, rxd);
     if (!ch)
         ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id);
     if (!ch)
         ch = ath10k_htt_rx_h_any_channel(ar);
     if (!ch)
         ch = ar->tgt_oper_chan;
     spin_unlock_bh(&ar->data_lock);
 
     if (!ch)
         return false;
 
     status->band = ch->band;
     status->freq = ch->center_freq;
 
     return true;
 }
 
 static void ath10k_htt_rx_h_signal(struct ath10k *ar,
                    struct ieee80211_rx_status *status,
                    struct htt_rx_desc *rxd)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
     int i;
 
     for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) {
         status->chains &= ~BIT(i);
 
         if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) {
             status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR +
                 rxd_ppdu_start->rssi_chains[i].pri20_mhz;
 
             status->chains |= BIT(i);
         }
     }
 
     /* FIXME: Get real NF */
     status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
              rxd_ppdu_start->rssi_comb;
     status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
 }
 
 static void ath10k_htt_rx_h_mactime(struct ath10k *ar,
                     struct ieee80211_rx_status *status,
                     struct htt_rx_desc *rxd)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct rx_ppdu_end_common *rxd_ppdu_end_common;
 
     rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd);
 
     /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This
      * means all prior MSDUs in a PPDU are reported to mac80211 without the
      * TSF. Is it worth holding frames until end of PPDU is known?
      *
      * FIXME: Can we get/compute 64bit TSF?
      */
     status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp);
     status->flag |= RX_FLAG_MACTIME_END;
 }
 
 static void ath10k_htt_rx_h_ppdu(struct ath10k *ar,
                  struct sk_buff_head *amsdu,
                  struct ieee80211_rx_status *status,
                  u32 vdev_id)
 {
     struct sk_buff *first;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_attention *rxd_attention;
     bool is_first_ppdu;
     bool is_last_ppdu;
 
     if (skb_queue_empty(amsdu))
         return;
 
     first = skb_peek(amsdu);
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)first->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
 
     is_first_ppdu = !!(rxd_attention->flags &
                __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU));
     is_last_ppdu = !!(rxd_attention->flags &
               __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU));
 
     if (is_first_ppdu) {
         /* New PPDU starts so clear out the old per-PPDU status. */
         status->freq = 0;
         status->rate_idx = 0;
         status->nss = 0;
         status->encoding = RX_ENC_LEGACY;
         status->bw = RATE_INFO_BW_20;
 
         status->flag &= ~RX_FLAG_MACTIME_END;
         status->flag |= RX_FLAG_NO_SIGNAL_VAL;
 
         status->flag &= ~(RX_FLAG_AMPDU_IS_LAST);
         status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
         status->ampdu_reference = ar->ampdu_reference;
 
         ath10k_htt_rx_h_signal(ar, status, rxd);
         ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id);
         ath10k_htt_rx_h_rates(ar, status, rxd);
     }
 
     if (is_last_ppdu) {
         ath10k_htt_rx_h_mactime(ar, status, rxd);
 
         /* set ampdu last segment flag */
         status->flag |= RX_FLAG_AMPDU_IS_LAST;
         ar->ampdu_reference++;
     }
 }
 
 static const char * const tid_to_ac[] = {
     "BE",
     "BK",
     "BK",
     "BE",
     "VI",
     "VI",
     "VO",
     "VO",
 };
 
 static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size)
 {
     u8 *qc;
     int tid;
 
     if (!ieee80211_is_data_qos(hdr->frame_control))
         return "";
 
     qc = ieee80211_get_qos_ctl(hdr);
     tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
     if (tid < 8)
         snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]);
     else
         snprintf(out, size, "tid %d", tid);
 
     return out;
 }
 
 static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar,
                        struct ieee80211_rx_status *rx_status,
                        struct sk_buff *skb)
 {
     struct ieee80211_rx_status *status;
 
     status = IEEE80211_SKB_RXCB(skb);
     *status = *rx_status;
 
     skb_queue_tail(&ar->htt.rx_msdus_q, skb);
 }
 
 static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb)
 {
     struct ieee80211_rx_status *status;
     struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
     char tid[32];
 
     status = IEEE80211_SKB_RXCB(skb);
 
     if (!(ar->filter_flags & FIF_FCSFAIL) &&
         status->flag & RX_FLAG_FAILED_FCS_CRC) {
         ar->stats.rx_crc_err_drop++;
         dev_kfree_skb_any(skb);
         return;
     }
 
     ath10k_dbg(ar, ATH10K_DBG_DATA,
            "rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n",
            skb,
            skb->len,
            ieee80211_get_SA(hdr),
            ath10k_get_tid(hdr, tid, sizeof(tid)),
            is_multicast_ether_addr(ieee80211_get_DA(hdr)) ?
                             "mcast" : "ucast",
            (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4,
            (status->encoding == RX_ENC_LEGACY) ? "legacy" : "",
            (status->encoding == RX_ENC_HT) ? "ht" : "",
            (status->encoding == RX_ENC_VHT) ? "vht" : "",
            (status->bw == RATE_INFO_BW_40) ? "40" : "",
            (status->bw == RATE_INFO_BW_80) ? "80" : "",
            (status->bw == RATE_INFO_BW_160) ? "160" : "",
            status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "",
            status->rate_idx,
            status->nss,
            status->freq,
            status->band, status->flag,
            !!(status->flag & RX_FLAG_FAILED_FCS_CRC),
            !!(status->flag & RX_FLAG_MMIC_ERROR),
            !!(status->flag & RX_FLAG_AMSDU_MORE));
     ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
             skb->data, skb->len);
     trace_ath10k_rx_hdr(ar, skb->data, skb->len);
     trace_ath10k_rx_payload(ar, skb->data, skb->len);
 
     ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
 }
 
 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar,
                       struct ieee80211_hdr *hdr)
 {
     int len = ieee80211_hdrlen(hdr->frame_control);
 
     if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
               ar->running_fw->fw_file.fw_features))
         len = round_up(len, 4);
 
     return len;
 }
 
 static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar,
                     struct sk_buff *msdu,
                     struct ieee80211_rx_status *status,
                     enum htt_rx_mpdu_encrypt_type enctype,
                     bool is_decrypted,
                     const u8 first_hdr[64])
 {
     struct ieee80211_hdr *hdr;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_msdu_end_common *rxd_msdu_end_common;
     size_t hdr_len;
     size_t crypto_len;
     bool is_first;
     bool is_last;
     bool msdu_limit_err;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
     u8 *qos;
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     is_first = !!(rxd_msdu_end_common->info0 &
               __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
     is_last = !!(rxd_msdu_end_common->info0 &
              __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
 
     /* Delivered decapped frame:
      * [802.11 header]
      * [crypto param] <-- can be trimmed if !fcs_err &&
      *                    !decrypt_err && !peer_idx_invalid
      * [amsdu header] <-- only if A-MSDU
      * [rfc1042/llc]
      * [payload]
      * [FCS] <-- at end, needs to be trimmed
      */
 
     /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when
      * deaggregate, so that unwanted MSDU-deaggregation is avoided for
      * error packets. If limit exceeds, hw sends all remaining MSDUs as
      * a single last MSDU with this msdu limit error set.
      */
     msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd);
 
     /* If MSDU limit error happens, then don't warn on, the partial raw MSDU
      * without first MSDU is expected in that case, and handled later here.
      */
     /* This probably shouldn't happen but warn just in case */
     if (WARN_ON_ONCE(!is_first && !msdu_limit_err))
         return;
 
     /* This probably shouldn't happen but warn just in case */
     if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err))
         return;
 
     skb_trim(msdu, msdu->len - FCS_LEN);
 
     /* Push original 80211 header */
     if (unlikely(msdu_limit_err)) {
         hdr = (struct ieee80211_hdr *)first_hdr;
         hdr_len = ieee80211_hdrlen(hdr->frame_control);
         crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
 
         if (ieee80211_is_data_qos(hdr->frame_control)) {
             qos = ieee80211_get_qos_ctl(hdr);
             qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
         }
 
         if (crypto_len)
             memcpy(skb_push(msdu, crypto_len),
                    (void *)hdr + round_up(hdr_len, bytes_aligned),
                    crypto_len);
 
         memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
     }
 
     /* In most cases this will be true for sniffed frames. It makes sense
      * to deliver them as-is without stripping the crypto param. This is
      * necessary for software based decryption.
      *
      * If there's no error then the frame is decrypted. At least that is
      * the case for frames that come in via fragmented rx indication.
      */
     if (!is_decrypted)
         return;
 
     /* The payload is decrypted so strip crypto params. Start from tail
      * since hdr is used to compute some stuff.
      */
 
     hdr = (void *)msdu->data;
 
     /* Tail */
     if (status->flag & RX_FLAG_IV_STRIPPED) {
         skb_trim(msdu, msdu->len -
              ath10k_htt_rx_crypto_mic_len(ar, enctype));
 
         skb_trim(msdu, msdu->len -
              ath10k_htt_rx_crypto_icv_len(ar, enctype));
     } else {
         /* MIC */
         if (status->flag & RX_FLAG_MIC_STRIPPED)
             skb_trim(msdu, msdu->len -
                  ath10k_htt_rx_crypto_mic_len(ar, enctype));
 
         /* ICV */
         if (status->flag & RX_FLAG_ICV_STRIPPED)
             skb_trim(msdu, msdu->len -
                  ath10k_htt_rx_crypto_icv_len(ar, enctype));
     }
 
     /* MMIC */
     if ((status->flag & RX_FLAG_MMIC_STRIPPED) &&
         !ieee80211_has_morefrags(hdr->frame_control) &&
         enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
         skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN);
 
     /* Head */
     if (status->flag & RX_FLAG_IV_STRIPPED) {
         hdr_len = ieee80211_hdrlen(hdr->frame_control);
         crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
 
         memmove((void *)msdu->data + crypto_len,
             (void *)msdu->data, hdr_len);
         skb_pull(msdu, crypto_len);
     }
 }
 
 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar,
                       struct sk_buff *msdu,
                       struct ieee80211_rx_status *status,
                       const u8 first_hdr[64],
                       enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct ieee80211_hdr *hdr;
     struct htt_rx_desc *rxd;
     size_t hdr_len;
     u8 da[ETH_ALEN];
     u8 sa[ETH_ALEN];
     int l3_pad_bytes;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
 
     /* Delivered decapped frame:
      * [nwifi 802.11 header] <-- replaced with 802.11 hdr
      * [rfc1042/llc]
      *
      * Note: The nwifi header doesn't have QoS Control and is
      * (always?) a 3addr frame.
      *
      * Note2: There's no A-MSDU subframe header. Even if it's part
      * of an A-MSDU.
      */
 
     /* pull decapped header and copy SA & DA */
     rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data -
                     hw->rx_desc_ops->rx_desc_size);
 
     l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
     skb_put(msdu, l3_pad_bytes);
 
     hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes);
 
     hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr);
     ether_addr_copy(da, ieee80211_get_DA(hdr));
     ether_addr_copy(sa, ieee80211_get_SA(hdr));
     skb_pull(msdu, hdr_len);
 
     /* push original 802.11 header */
     hdr = (struct ieee80211_hdr *)first_hdr;
     hdr_len = ieee80211_hdrlen(hdr->frame_control);
 
     if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
         memcpy(skb_push(msdu,
                 ath10k_htt_rx_crypto_param_len(ar, enctype)),
                (void *)hdr + round_up(hdr_len, bytes_aligned),
             ath10k_htt_rx_crypto_param_len(ar, enctype));
     }
 
     memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
 
     /* original 802.11 header has a different DA and in
      * case of 4addr it may also have different SA
      */
     hdr = (struct ieee80211_hdr *)msdu->data;
     ether_addr_copy(ieee80211_get_DA(hdr), da);
     ether_addr_copy(ieee80211_get_SA(hdr), sa);
 }
 
 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar,
                       struct sk_buff *msdu,
                       enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ieee80211_hdr *hdr;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_msdu_end_common *rxd_msdu_end_common;
     u8 *rxd_rx_hdr_status;
     size_t hdr_len, crypto_len;
     void *rfc1042;
     bool is_first, is_last, is_amsdu;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
     hdr = (void *)rxd_rx_hdr_status;
 
     is_first = !!(rxd_msdu_end_common->info0 &
               __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
     is_last = !!(rxd_msdu_end_common->info0 &
              __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
     is_amsdu = !(is_first && is_last);
 
     rfc1042 = hdr;
 
     if (is_first) {
         hdr_len = ieee80211_hdrlen(hdr->frame_control);
         crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
 
         rfc1042 += round_up(hdr_len, bytes_aligned) +
                round_up(crypto_len, bytes_aligned);
     }
 
     if (is_amsdu)
         rfc1042 += sizeof(struct amsdu_subframe_hdr);
 
     return rfc1042;
 }
 
 static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar,
                     struct sk_buff *msdu,
                     struct ieee80211_rx_status *status,
                     const u8 first_hdr[64],
                     enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct ieee80211_hdr *hdr;
     struct ethhdr *eth;
     size_t hdr_len;
     void *rfc1042;
     u8 da[ETH_ALEN];
     u8 sa[ETH_ALEN];
     int l3_pad_bytes;
     struct htt_rx_desc *rxd;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
 
     /* Delivered decapped frame:
      * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc
      * [payload]
      */
 
     rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype);
     if (WARN_ON_ONCE(!rfc1042))
         return;
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
     skb_put(msdu, l3_pad_bytes);
     skb_pull(msdu, l3_pad_bytes);
 
     /* pull decapped header and copy SA & DA */
     eth = (struct ethhdr *)msdu->data;
     ether_addr_copy(da, eth->h_dest);
     ether_addr_copy(sa, eth->h_source);
     skb_pull(msdu, sizeof(struct ethhdr));
 
     /* push rfc1042/llc/snap */
     memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042,
            sizeof(struct rfc1042_hdr));
 
     /* push original 802.11 header */
     hdr = (struct ieee80211_hdr *)first_hdr;
     hdr_len = ieee80211_hdrlen(hdr->frame_control);
 
     if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
         memcpy(skb_push(msdu,
                 ath10k_htt_rx_crypto_param_len(ar, enctype)),
                (void *)hdr + round_up(hdr_len, bytes_aligned),
             ath10k_htt_rx_crypto_param_len(ar, enctype));
     }
 
     memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
 
     /* original 802.11 header has a different DA and in
      * case of 4addr it may also have different SA
      */
     hdr = (struct ieee80211_hdr *)msdu->data;
     ether_addr_copy(ieee80211_get_DA(hdr), da);
     ether_addr_copy(ieee80211_get_SA(hdr), sa);
 }
 
 static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar,
                      struct sk_buff *msdu,
                      struct ieee80211_rx_status *status,
                      const u8 first_hdr[64],
                      enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct ieee80211_hdr *hdr;
     size_t hdr_len;
     int l3_pad_bytes;
     struct htt_rx_desc *rxd;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
 
     /* Delivered decapped frame:
      * [amsdu header] <-- replaced with 802.11 hdr
      * [rfc1042/llc]
      * [payload]
      */
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
 
     skb_put(msdu, l3_pad_bytes);
     skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes);
 
     hdr = (struct ieee80211_hdr *)first_hdr;
     hdr_len = ieee80211_hdrlen(hdr->frame_control);
 
     if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
         memcpy(skb_push(msdu,
                 ath10k_htt_rx_crypto_param_len(ar, enctype)),
                (void *)hdr + round_up(hdr_len, bytes_aligned),
             ath10k_htt_rx_crypto_param_len(ar, enctype));
     }
 
     memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
 }
 
 static void ath10k_htt_rx_h_undecap(struct ath10k *ar,
                     struct sk_buff *msdu,
                     struct ieee80211_rx_status *status,
                     u8 first_hdr[64],
                     enum htt_rx_mpdu_encrypt_type enctype,
                     bool is_decrypted)
 {
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_msdu_start_common *rxd_msdu_start_common;
     enum rx_msdu_decap_format decap;
 
     /* First msdu's decapped header:
      * [802.11 header] <-- padded to 4 bytes long
      * [crypto param] <-- padded to 4 bytes long
      * [amsdu header] <-- only if A-MSDU
      * [rfc1042/llc]
      *
      * Other (2nd, 3rd, ..) msdu's decapped header:
      * [amsdu header] <-- only if A-MSDU
      * [rfc1042/llc]
      */
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
     decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
            RX_MSDU_START_INFO1_DECAP_FORMAT);
 
     switch (decap) {
     case RX_MSDU_DECAP_RAW:
         ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype,
                         is_decrypted, first_hdr);
         break;
     case RX_MSDU_DECAP_NATIVE_WIFI:
         ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr,
                           enctype);
         break;
     case RX_MSDU_DECAP_ETHERNET2_DIX:
         ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype);
         break;
     case RX_MSDU_DECAP_8023_SNAP_LLC:
         ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr,
                          enctype);
         break;
     }
 }
 
 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb)
 {
     struct htt_rx_desc *rxd;
     struct rx_attention *rxd_attention;
     struct rx_msdu_start_common *rxd_msdu_start_common;
     u32 flags, info;
     bool is_ip4, is_ip6;
     bool is_tcp, is_udp;
     bool ip_csum_ok, tcpudp_csum_ok;
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)skb->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
     rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
     flags = __le32_to_cpu(rxd_attention->flags);
     info = __le32_to_cpu(rxd_msdu_start_common->info1);
 
     is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO);
     is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO);
     is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO);
     is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO);
     ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL);
     tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL);
 
     if (!is_ip4 && !is_ip6)
         return CHECKSUM_NONE;
     if (!is_tcp && !is_udp)
         return CHECKSUM_NONE;
     if (!ip_csum_ok)
         return CHECKSUM_NONE;
     if (!tcpudp_csum_ok)
         return CHECKSUM_NONE;
 
     return CHECKSUM_UNNECESSARY;
 }
 
 static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw,
                      struct sk_buff *msdu)
 {
     msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu);
 }
 
 static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb,
                   u16 offset,
                   enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ieee80211_hdr *hdr;
     u64 pn = 0;
     u8 *ehdr;
 
     hdr = (struct ieee80211_hdr *)(skb->data + offset);
     ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control);
 
     if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) {
         pn = ehdr[0];
         pn |= (u64)ehdr[1] << 8;
         pn |= (u64)ehdr[4] << 16;
         pn |= (u64)ehdr[5] << 24;
         pn |= (u64)ehdr[6] << 32;
         pn |= (u64)ehdr[7] << 40;
     }
     return pn;
 }
 
 static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar,
                          struct sk_buff *skb,
                          u16 offset)
 {
     struct ieee80211_hdr *hdr;
 
     hdr = (struct ieee80211_hdr *)(skb->data + offset);
     return !is_multicast_ether_addr(hdr->addr1);
 }
 
 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar,
                       struct sk_buff *skb,
                       u16 peer_id,
                       u16 offset,
                       enum htt_rx_mpdu_encrypt_type enctype)
 {
     struct ath10k_peer *peer;
     union htt_rx_pn_t *last_pn, new_pn = {0};
     struct ieee80211_hdr *hdr;
     u8 tid, frag_number;
     u32 seq;
 
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n");
         return false;
     }
 
     hdr = (struct ieee80211_hdr *)(skb->data + offset);
     if (ieee80211_is_data_qos(hdr->frame_control))
         tid = ieee80211_get_tid(hdr);
     else
         tid = ATH10K_TXRX_NON_QOS_TID;
 
     last_pn = &peer->frag_tids_last_pn[tid];
     new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype);
     frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
     seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 
     if (frag_number == 0) {
         last_pn->pn48 = new_pn.pn48;
         peer->frag_tids_seq[tid] = seq;
     } else {
         if (seq != peer->frag_tids_seq[tid])
             return false;
 
         if (new_pn.pn48 != last_pn->pn48 + 1)
             return false;
 
         last_pn->pn48 = new_pn.pn48;
     }
 
     return true;
 }
 
 static void ath10k_htt_rx_h_mpdu(struct ath10k *ar,
                  struct sk_buff_head *amsdu,
                  struct ieee80211_rx_status *status,
                  bool fill_crypt_header,
                  u8 *rx_hdr,
                  enum ath10k_pkt_rx_err *err,
                  u16 peer_id,
                  bool frag)
 {
     struct sk_buff *first;
     struct sk_buff *last;
     struct sk_buff *msdu, *temp;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_attention *rxd_attention;
     struct rx_mpdu_start *rxd_mpdu_start;
 
     struct ieee80211_hdr *hdr;
     enum htt_rx_mpdu_encrypt_type enctype;
     u8 first_hdr[64];
     u8 *qos;
     bool has_fcs_err;
     bool has_crypto_err;
     bool has_tkip_err;
     bool has_peer_idx_invalid;
     bool is_decrypted;
     bool is_mgmt;
     u32 attention;
     bool frag_pn_check = true, multicast_check = true;
 
     if (skb_queue_empty(amsdu))
         return;
 
     first = skb_peek(amsdu);
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)first->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
     rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
 
     is_mgmt = !!(rxd_attention->flags &
              __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE));
 
     enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
              RX_MPDU_START_INFO0_ENCRYPT_TYPE);
 
     /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
      * decapped header. It'll be used for undecapping of each MSDU.
      */
     hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
     memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
 
     if (rx_hdr)
         memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
 
     /* Each A-MSDU subframe will use the original header as the base and be
      * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
      */
     hdr = (void *)first_hdr;
 
     if (ieee80211_is_data_qos(hdr->frame_control)) {
         qos = ieee80211_get_qos_ctl(hdr);
         qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
     }
 
     /* Some attention flags are valid only in the last MSDU. */
     last = skb_peek_tail(amsdu);
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)last->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
     attention = __le32_to_cpu(rxd_attention->flags);
 
     has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR);
     has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR);
     has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR);
     has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID);
 
     /* Note: If hardware captures an encrypted frame that it can't decrypt,
      * e.g. due to fcs error, missing peer or invalid key data it will
      * report the frame as raw.
      */
     is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE &&
             !has_fcs_err &&
             !has_crypto_err &&
             !has_peer_idx_invalid);
 
     /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
     status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
               RX_FLAG_MMIC_ERROR |
               RX_FLAG_DECRYPTED |
               RX_FLAG_IV_STRIPPED |
               RX_FLAG_ONLY_MONITOR |
               RX_FLAG_MMIC_STRIPPED);
 
     if (has_fcs_err)
         status->flag |= RX_FLAG_FAILED_FCS_CRC;
 
     if (has_tkip_err)
         status->flag |= RX_FLAG_MMIC_ERROR;
 
     if (err) {
         if (has_fcs_err)
             *err = ATH10K_PKT_RX_ERR_FCS;
         else if (has_tkip_err)
             *err = ATH10K_PKT_RX_ERR_TKIP;
         else if (has_crypto_err)
             *err = ATH10K_PKT_RX_ERR_CRYPT;
         else if (has_peer_idx_invalid)
             *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL;
     }
 
     /* Firmware reports all necessary management frames via WMI already.
      * They are not reported to monitor interfaces at all so pass the ones
      * coming via HTT to monitor interfaces instead. This simplifies
      * matters a lot.
      */
     if (is_mgmt)
         status->flag |= RX_FLAG_ONLY_MONITOR;
 
     if (is_decrypted) {
         status->flag |= RX_FLAG_DECRYPTED;
 
         if (likely(!is_mgmt))
             status->flag |= RX_FLAG_MMIC_STRIPPED;
 
         if (fill_crypt_header)
             status->flag |= RX_FLAG_MIC_STRIPPED |
                     RX_FLAG_ICV_STRIPPED;
         else
             status->flag |= RX_FLAG_IV_STRIPPED;
     }
 
     skb_queue_walk(amsdu, msdu) {
         if (frag && !fill_crypt_header && is_decrypted &&
             enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2)
             frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar,
                                       msdu,
                                       peer_id,
                                       0,
                                       enctype);
 
         if (frag)
             multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar,
                                            msdu,
                                            0);
 
         if (!frag_pn_check || !multicast_check) {
             /* Discard the fragment with invalid PN or multicast DA
              */
             temp = msdu->prev;
             __skb_unlink(msdu, amsdu);
             dev_kfree_skb_any(msdu);
             msdu = temp;
             frag_pn_check = true;
             multicast_check = true;
             continue;
         }
 
         ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu);
 
         if (frag && !fill_crypt_header &&
             enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
             status->flag &= ~RX_FLAG_MMIC_STRIPPED;
 
         ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
                     is_decrypted);
 
         /* Undecapping involves copying the original 802.11 header back
          * to sk_buff. If frame is protected and hardware has decrypted
          * it then remove the protected bit.
          */
         if (!is_decrypted)
             continue;
         if (is_mgmt)
             continue;
 
         if (fill_crypt_header)
             continue;
 
         hdr = (void *)msdu->data;
         hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 
         if (frag && !fill_crypt_header &&
             enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
             status->flag &= ~RX_FLAG_IV_STRIPPED &
                     ~RX_FLAG_MMIC_STRIPPED;
     }
 }
 
 static void ath10k_htt_rx_h_enqueue(struct ath10k *ar,
                     struct sk_buff_head *amsdu,
                     struct ieee80211_rx_status *status)
 {
     struct sk_buff *msdu;
     struct sk_buff *first_subframe;
 
     first_subframe = skb_peek(amsdu);
 
     while ((msdu = __skb_dequeue(amsdu))) {
         /* Setup per-MSDU flags */
         if (skb_queue_empty(amsdu))
             status->flag &= ~RX_FLAG_AMSDU_MORE;
         else
             status->flag |= RX_FLAG_AMSDU_MORE;
 
         if (msdu == first_subframe) {
             first_subframe = NULL;
             status->flag &= ~RX_FLAG_ALLOW_SAME_PN;
         } else {
             status->flag |= RX_FLAG_ALLOW_SAME_PN;
         }
 
         ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
     }
 }
 
 static int ath10k_unchain_msdu(struct sk_buff_head *amsdu,
                    unsigned long *unchain_cnt)
 {
     struct sk_buff *skb, *first;
     int space;
     int total_len = 0;
     int amsdu_len = skb_queue_len(amsdu);
 
     /* TODO:  Might could optimize this by using
      * skb_try_coalesce or similar method to
      * decrease copying, or maybe get mac80211 to
      * provide a way to just receive a list of
      * skb?
      */
 
     first = __skb_dequeue(amsdu);
 
     /* Allocate total length all at once. */
     skb_queue_walk(amsdu, skb)
         total_len += skb->len;
 
     space = total_len - skb_tailroom(first);
     if ((space > 0) &&
         (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) {
         /* TODO:  bump some rx-oom error stat */
         /* put it back together so we can free the
          * whole list at once.
          */
         __skb_queue_head(amsdu, first);
         return -1;
     }
 
     /* Walk list again, copying contents into
      * msdu_head
      */
     while ((skb = __skb_dequeue(amsdu))) {
         skb_copy_from_linear_data(skb, skb_put(first, skb->len),
                       skb->len);
         dev_kfree_skb_any(skb);
     }
 
     __skb_queue_head(amsdu, first);
 
     *unchain_cnt += amsdu_len - 1;
 
     return 0;
 }
 
 static void ath10k_htt_rx_h_unchain(struct ath10k *ar,
                     struct sk_buff_head *amsdu,
                     unsigned long *drop_cnt,
                     unsigned long *unchain_cnt)
 {
     struct sk_buff *first;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_msdu_start_common *rxd_msdu_start_common;
     struct rx_frag_info_common *rxd_frag_info;
     enum rx_msdu_decap_format decap;
 
     first = skb_peek(amsdu);
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)first->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
     rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd);
     decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
            RX_MSDU_START_INFO1_DECAP_FORMAT);
 
     /* FIXME: Current unchaining logic can only handle simple case of raw
      * msdu chaining. If decapping is other than raw the chaining may be
      * more complex and this isn't handled by the current code. Don't even
      * try re-constructing such frames - it'll be pretty much garbage.
      */
     if (decap != RX_MSDU_DECAP_RAW ||
         skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) {
         *drop_cnt += skb_queue_len(amsdu);
         __skb_queue_purge(amsdu);
         return;
     }
 
     ath10k_unchain_msdu(amsdu, unchain_cnt);
 }
 
 static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar,
                      struct sk_buff_head *amsdu)
 {
     u8 *subframe_hdr;
     struct sk_buff *first;
     bool is_first, is_last;
     struct ath10k_hw_params *hw = &ar->hw_params;
     struct htt_rx_desc *rxd;
     struct rx_msdu_end_common *rxd_msdu_end_common;
     struct rx_mpdu_start *rxd_mpdu_start;
     struct ieee80211_hdr *hdr;
     size_t hdr_len, crypto_len;
     enum htt_rx_mpdu_encrypt_type enctype;
     int bytes_aligned = ar->hw_params.decap_align_bytes;
 
     first = skb_peek(amsdu);
 
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)first->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
     hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
 
     is_first = !!(rxd_msdu_end_common->info0 &
               __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
     is_last = !!(rxd_msdu_end_common->info0 &
              __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
 
     /* Return in case of non-aggregated msdu */
     if (is_first && is_last)
         return true;
 
     /* First msdu flag is not set for the first msdu of the list */
     if (!is_first)
         return false;
 
     enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
              RX_MPDU_START_INFO0_ENCRYPT_TYPE);
 
     hdr_len = ieee80211_hdrlen(hdr->frame_control);
     crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
 
     subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) +
                crypto_len;
 
     /* Validate if the amsdu has a proper first subframe.
      * There are chances a single msdu can be received as amsdu when
      * the unauthenticated amsdu flag of a QoS header
      * gets flipped in non-SPP AMSDU's, in such cases the first
      * subframe has llc/snap header in place of a valid da.
      * return false if the da matches rfc1042 pattern
      */
     if (ether_addr_equal(subframe_hdr, rfc1042_header))
         return false;
 
     return true;
 }
 
 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar,
                     struct sk_buff_head *amsdu,
                     struct ieee80211_rx_status *rx_status)
 {
     if (!rx_status->freq) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n");
         return false;
     }
 
     if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n");
         return false;
     }
 
     if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n");
         return false;
     }
 
     return true;
 }
 
 static void ath10k_htt_rx_h_filter(struct ath10k *ar,
                    struct sk_buff_head *amsdu,
                    struct ieee80211_rx_status *rx_status,
                    unsigned long *drop_cnt)
 {
     if (skb_queue_empty(amsdu))
         return;
 
     if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status))
         return;
 
     if (drop_cnt)
         *drop_cnt += skb_queue_len(amsdu);
 
     __skb_queue_purge(amsdu);
 }
 
 static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
 {
     struct ath10k *ar = htt->ar;
     struct ieee80211_rx_status *rx_status = &htt->rx_status;
     struct sk_buff_head amsdu;
     int ret;
     unsigned long drop_cnt = 0;
     unsigned long unchain_cnt = 0;
     unsigned long drop_cnt_filter = 0;
     unsigned long msdus_to_queue, num_msdus;
     enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX;
     u8 first_hdr[RX_HTT_HDR_STATUS_LEN];
 
     __skb_queue_head_init(&amsdu);
 
     spin_lock_bh(&htt->rx_ring.lock);
     if (htt->rx_confused) {
         spin_unlock_bh(&htt->rx_ring.lock);
         return -EIO;
     }
     ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu);
     spin_unlock_bh(&htt->rx_ring.lock);
 
     if (ret < 0) {
         ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
         __skb_queue_purge(&amsdu);
         /* FIXME: It's probably a good idea to reboot the
          * device instead of leaving it inoperable.
          */
         htt->rx_confused = true;
         return ret;
     }
 
     num_msdus = skb_queue_len(&amsdu);
 
     ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff);
 
     /* only for ret = 1 indicates chained msdus */
     if (ret > 0)
         ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt);
 
     ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter);
     ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0,
                  false);
     msdus_to_queue = skb_queue_len(&amsdu);
     ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status);
 
     ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err,
                        unchain_cnt, drop_cnt, drop_cnt_filter,
                        msdus_to_queue);
 
     return 0;
 }
 
 static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc,
                       union htt_rx_pn_t *pn,
                       int pn_len_bits)
 {
     switch (pn_len_bits) {
     case 48:
         pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) +
                ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32);
         break;
     case 24:
         pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0);
         break;
     }
 }
 
 static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn,
                    union htt_rx_pn_t *old_pn)
 {
     return ((new_pn->pn48 & 0xffffffffffffULL) <=
         (old_pn->pn48 & 0xffffffffffffULL));
 }
 
 static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar,
                          struct ath10k_peer *peer,
                          struct htt_rx_indication_hl *rx)
 {
     bool last_pn_valid, pn_invalid = false;
     enum htt_txrx_sec_cast_type sec_index;
     enum htt_security_types sec_type;
     union htt_rx_pn_t new_pn = {0};
     struct htt_hl_rx_desc *rx_desc;
     union htt_rx_pn_t *last_pn;
     u32 rx_desc_info, tid;
     int num_mpdu_ranges;
 
     lockdep_assert_held(&ar->data_lock);
 
     if (!peer)
         return false;
 
     if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU))
         return false;
 
     num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
                  HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
 
     rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
     rx_desc_info = __le32_to_cpu(rx_desc->info);
 
     if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED))
         return false;
 
     tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
     last_pn_valid = peer->tids_last_pn_valid[tid];
     last_pn = &peer->tids_last_pn[tid];
 
     if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
         sec_index = HTT_TXRX_SEC_MCAST;
     else
         sec_index = HTT_TXRX_SEC_UCAST;
 
     sec_type = peer->rx_pn[sec_index].sec_type;
     ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
 
     if (sec_type != HTT_SECURITY_AES_CCMP &&
         sec_type != HTT_SECURITY_TKIP &&
         sec_type != HTT_SECURITY_TKIP_NOMIC)
         return false;
 
     if (last_pn_valid)
         pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn);
     else
         peer->tids_last_pn_valid[tid] = true;
 
     if (!pn_invalid)
         last_pn->pn48 = new_pn.pn48;
 
     return pn_invalid;
 }
 
 static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
                      struct htt_rx_indication_hl *rx,
                      struct sk_buff *skb,
                      enum htt_rx_pn_check_type check_pn_type,
                      enum htt_rx_tkip_demic_type tkip_mic_type)
 {
     struct ath10k *ar = htt->ar;
     struct ath10k_peer *peer;
     struct htt_rx_indication_mpdu_range *mpdu_ranges;
     struct fw_rx_desc_hl *fw_desc;
     enum htt_txrx_sec_cast_type sec_index;
     enum htt_security_types sec_type;
     union htt_rx_pn_t new_pn = {0};
     struct htt_hl_rx_desc *rx_desc;
     struct ieee80211_hdr *hdr;
     struct ieee80211_rx_status *rx_status;
     u16 peer_id;
     u8 rx_desc_len;
     int num_mpdu_ranges;
     size_t tot_hdr_len;
     struct ieee80211_channel *ch;
     bool pn_invalid, qos, first_msdu;
     u32 tid, rx_desc_info;
 
     peer_id = __le16_to_cpu(rx->hdr.peer_id);
     tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
 
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     spin_unlock_bh(&ar->data_lock);
     if (!peer && peer_id != HTT_INVALID_PEERID)
         ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id);
 
     if (!peer)
         return true;
 
     num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
                  HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
     mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx);
     fw_desc = &rx->fw_desc;
     rx_desc_len = fw_desc->len;
 
     if (fw_desc->u.bits.discard) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n");
         goto err;
     }
 
     /* I have not yet seen any case where num_mpdu_ranges > 1.
      * qcacld does not seem handle that case either, so we introduce the
      * same limitiation here as well.
      */
     if (num_mpdu_ranges > 1)
         ath10k_warn(ar,
                 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n",
                 num_mpdu_ranges);
 
     if (mpdu_ranges->mpdu_range_status !=
         HTT_RX_IND_MPDU_STATUS_OK &&
         mpdu_ranges->mpdu_range_status !=
         HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n",
                mpdu_ranges->mpdu_range_status);
         goto err;
     }
 
     rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
     rx_desc_info = __le32_to_cpu(rx_desc->info);
 
     if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
         sec_index = HTT_TXRX_SEC_MCAST;
     else
         sec_index = HTT_TXRX_SEC_UCAST;
 
     sec_type = peer->rx_pn[sec_index].sec_type;
     first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU;
 
     ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
 
     if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) {
         spin_lock_bh(&ar->data_lock);
         pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx);
         spin_unlock_bh(&ar->data_lock);
 
         if (pn_invalid)
             goto err;
     }
 
     /* Strip off all headers before the MAC header before delivery to
      * mac80211
      */
     tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) +
               sizeof(rx->ppdu) + sizeof(rx->prefix) +
               sizeof(rx->fw_desc) +
               sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len;
 
     skb_pull(skb, tot_hdr_len);
 
     hdr = (struct ieee80211_hdr *)skb->data;
     qos = ieee80211_is_data_qos(hdr->frame_control);
 
     rx_status = IEEE80211_SKB_RXCB(skb);
     memset(rx_status, 0, sizeof(*rx_status));
 
     if (rx->ppdu.combined_rssi == 0) {
         /* SDIO firmware does not provide signal */
         rx_status->signal = 0;
         rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
     } else {
         rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
             rx->ppdu.combined_rssi;
         rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
     }
 
     spin_lock_bh(&ar->data_lock);
     ch = ar->scan_channel;
     if (!ch)
         ch = ar->rx_channel;
     if (!ch)
         ch = ath10k_htt_rx_h_any_channel(ar);
     if (!ch)
         ch = ar->tgt_oper_chan;
     spin_unlock_bh(&ar->data_lock);
 
     if (ch) {
         rx_status->band = ch->band;
         rx_status->freq = ch->center_freq;
     }
     if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU)
         rx_status->flag &= ~RX_FLAG_AMSDU_MORE;
     else
         rx_status->flag |= RX_FLAG_AMSDU_MORE;
 
     /* Not entirely sure about this, but all frames from the chipset has
      * the protected flag set even though they have already been decrypted.
      * Unmasking this flag is necessary in order for mac80211 not to drop
      * the frame.
      * TODO: Verify this is always the case or find out a way to check
      * if there has been hw decryption.
      */
     if (ieee80211_has_protected(hdr->frame_control)) {
         hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
         rx_status->flag |= RX_FLAG_DECRYPTED |
                    RX_FLAG_IV_STRIPPED |
                    RX_FLAG_MMIC_STRIPPED;
 
         if (tid < IEEE80211_NUM_TIDS &&
             first_msdu &&
             check_pn_type == HTT_RX_PN_CHECK &&
            (sec_type == HTT_SECURITY_AES_CCMP ||
             sec_type == HTT_SECURITY_TKIP ||
             sec_type == HTT_SECURITY_TKIP_NOMIC)) {
             u8 offset, *ivp, i;
             s8 keyidx = 0;
             __le64 pn48 = cpu_to_le64(new_pn.pn48);
 
             hdr = (struct ieee80211_hdr *)skb->data;
             offset = ieee80211_hdrlen(hdr->frame_control);
             hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED);
             rx_status->flag &= ~RX_FLAG_IV_STRIPPED;
 
             memmove(skb->data - IEEE80211_CCMP_HDR_LEN,
                 skb->data, offset);
             skb_push(skb, IEEE80211_CCMP_HDR_LEN);
             ivp = skb->data + offset;
             memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN);
             /* Ext IV */
             ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV;
 
             for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
                 if (peer->keys[i] &&
                     peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE)
                     keyidx = peer->keys[i]->keyidx;
             }
 
             /* Key ID */
             ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6;
 
             if (sec_type == HTT_SECURITY_AES_CCMP) {
                 rx_status->flag |= RX_FLAG_MIC_STRIPPED;
                 /* pn 0, pn 1 */
                 memcpy(skb->data + offset, &pn48, 2);
                 /* pn 1, pn 3 , pn 34 , pn 5 */
                 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
             } else {
                 rx_status->flag |= RX_FLAG_ICV_STRIPPED;
                 /* TSC 0 */
                 memcpy(skb->data + offset + 2, &pn48, 1);
                 /* TSC 1 */
                 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1);
                 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/
                 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
             }
         }
     }
 
     if (tkip_mic_type == HTT_RX_TKIP_MIC)
         rx_status->flag &= ~RX_FLAG_IV_STRIPPED &
                    ~RX_FLAG_MMIC_STRIPPED;
 
     if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
         rx_status->flag |= RX_FLAG_MMIC_ERROR;
 
     if (!qos && tid < IEEE80211_NUM_TIDS) {
         u8 offset;
         __le16 qos_ctrl = 0;
 
         hdr = (struct ieee80211_hdr *)skb->data;
         offset = ieee80211_hdrlen(hdr->frame_control);
 
         hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
         memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset);
         skb_push(skb, IEEE80211_QOS_CTL_LEN);
         qos_ctrl = cpu_to_le16(tid);
         memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN);
     }
 
     if (ar->napi.dev)
         ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
     else
         ieee80211_rx_ni(ar->hw, skb);
 
     /* We have delivered the skb to the upper layers (mac80211) so we
      * must not free it.
      */
     return false;
 err:
     /* Tell the caller that it must free the skb since we have not
      * consumed it
      */
     return true;
 }
 
 static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
                            u16 head_len,
                            u16 hdr_len)
 {
     u8 *ivp, *orig_hdr;
 
     orig_hdr = skb->data;
     ivp = orig_hdr + hdr_len + head_len;
 
     /* the ExtIV bit is always set to 1 for TKIP */
     if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
         return -EINVAL;
 
     memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
     skb_pull(skb, IEEE80211_TKIP_IV_LEN);
     skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
     return 0;
 }
 
 static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
                          u16 head_len,
                          u16 hdr_len)
 {
     u8 *ivp, *orig_hdr;
 
     orig_hdr = skb->data;
     ivp = orig_hdr + hdr_len + head_len;
 
     /* the ExtIV bit is always set to 1 for TKIP */
     if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
         return -EINVAL;
 
     memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
     skb_pull(skb, IEEE80211_TKIP_IV_LEN);
     skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
     return 0;
 }
 
 static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
                      u16 head_len,
                      u16 hdr_len)
 {
     u8 *ivp, *orig_hdr;
 
     orig_hdr = skb->data;
     ivp = orig_hdr + hdr_len + head_len;
 
     /* the ExtIV bit is always set to 1 for CCMP */
     if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
         return -EINVAL;
 
     skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
     memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
     skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
     return 0;
 }
 
 static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
                     u16 head_len,
                     u16 hdr_len)
 {
     u8 *orig_hdr;
 
     orig_hdr = skb->data;
 
     memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
         orig_hdr, head_len + hdr_len);
     skb_pull(skb, IEEE80211_WEP_IV_LEN);
     skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
     return 0;
 }
 
 static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
                           struct htt_rx_fragment_indication *rx,
                           struct sk_buff *skb)
 {
     struct ath10k *ar = htt->ar;
     enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
     enum htt_txrx_sec_cast_type sec_index;
     struct htt_rx_indication_hl *rx_hl;
     enum htt_security_types sec_type;
     u32 tid, frag, seq, rx_desc_info;
     union htt_rx_pn_t new_pn = {0};
     struct htt_hl_rx_desc *rx_desc;
     u16 peer_id, sc, hdr_space;
     union htt_rx_pn_t *last_pn;
     struct ieee80211_hdr *hdr;
     int ret, num_mpdu_ranges;
     struct ath10k_peer *peer;
     struct htt_resp *resp;
     size_t tot_hdr_len;
 
     resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
     skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
     skb_trim(skb, skb->len - FCS_LEN);
 
     peer_id = __le16_to_cpu(rx->peer_id);
     rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
 
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
         goto err;
     }
 
     num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
                  HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
 
     tot_hdr_len = sizeof(struct htt_resp_hdr) +
               sizeof(rx_hl->hdr) +
               sizeof(rx_hl->ppdu) +
               sizeof(rx_hl->prefix) +
               sizeof(rx_hl->fw_desc) +
               sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
 
     tid =  MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
     rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
     rx_desc_info = __le32_to_cpu(rx_desc->info);
 
     hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
 
     if (is_multicast_ether_addr(hdr->addr1)) {
         /* Discard the fragment with multicast DA */
         goto err;
     }
 
     if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
         spin_unlock_bh(&ar->data_lock);
         return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
                             HTT_RX_NON_PN_CHECK,
                             HTT_RX_NON_TKIP_MIC);
     }
 
     if (ieee80211_has_retry(hdr->frame_control))
         goto err;
 
     hdr_space = ieee80211_hdrlen(hdr->frame_control);
     sc = __le16_to_cpu(hdr->seq_ctrl);
     seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
     frag = sc & IEEE80211_SCTL_FRAG;
 
     sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
             HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
     sec_type = peer->rx_pn[sec_index].sec_type;
     ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
 
     switch (sec_type) {
     case HTT_SECURITY_TKIP:
         tkip_mic = HTT_RX_TKIP_MIC;
         ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
                                 tot_hdr_len +
                                 rx_hl->fw_desc.len,
                                 hdr_space);
         if (ret)
             goto err;
         break;
     case HTT_SECURITY_TKIP_NOMIC:
         ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
                               tot_hdr_len +
                               rx_hl->fw_desc.len,
                               hdr_space);
         if (ret)
             goto err;
         break;
     case HTT_SECURITY_AES_CCMP:
         ret = ath10k_htt_rx_frag_ccmp_decap(skb,
                             tot_hdr_len + rx_hl->fw_desc.len,
                             hdr_space);
         if (ret)
             goto err;
         break;
     case HTT_SECURITY_WEP128:
     case HTT_SECURITY_WEP104:
     case HTT_SECURITY_WEP40:
         ret = ath10k_htt_rx_frag_wep_decap(skb,
                            tot_hdr_len + rx_hl->fw_desc.len,
                            hdr_space);
         if (ret)
             goto err;
         break;
     default:
         break;
     }
 
     resp = (struct htt_resp *)(skb->data);
 
     if (sec_type != HTT_SECURITY_AES_CCMP &&
         sec_type != HTT_SECURITY_TKIP &&
         sec_type != HTT_SECURITY_TKIP_NOMIC) {
         spin_unlock_bh(&ar->data_lock);
         return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
                             HTT_RX_NON_PN_CHECK,
                             HTT_RX_NON_TKIP_MIC);
     }
 
     last_pn = &peer->frag_tids_last_pn[tid];
 
     if (frag == 0) {
         if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
             goto err;
 
         last_pn->pn48 = new_pn.pn48;
         peer->frag_tids_seq[tid] = seq;
     } else if (sec_type == HTT_SECURITY_AES_CCMP) {
         if (seq != peer->frag_tids_seq[tid])
             goto err;
 
         if (new_pn.pn48 != last_pn->pn48 + 1)
             goto err;
 
         last_pn->pn48 = new_pn.pn48;
         last_pn = &peer->tids_last_pn[tid];
         last_pn->pn48 = new_pn.pn48;
     }
 
     spin_unlock_bh(&ar->data_lock);
 
     return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
                         HTT_RX_NON_PN_CHECK, tkip_mic);
 
 err:
     spin_unlock_bh(&ar->data_lock);
 
     /* Tell the caller that it must free the skb since we have not
      * consumed it
      */
     return true;
 }
 
 static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
                      struct htt_rx_indication *rx)
 {
     struct ath10k *ar = htt->ar;
     struct htt_rx_indication_mpdu_range *mpdu_ranges;
     int num_mpdu_ranges;
     int i, mpdu_count = 0;
     u16 peer_id;
     u8 tid;
 
     num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
                  HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
     peer_id = __le16_to_cpu(rx->hdr.peer_id);
     tid =  MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
 
     mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
 
     ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
             rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
 
     for (i = 0; i < num_mpdu_ranges; i++)
         mpdu_count += mpdu_ranges[i].mpdu_count;
 
     atomic_add(mpdu_count, &htt->num_mpdus_ready);
 
     ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges,
                          num_mpdu_ranges);
 }
 
 static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
                        struct sk_buff *skb)
 {
     struct ath10k_htt *htt = &ar->htt;
     struct htt_resp *resp = (struct htt_resp *)skb->data;
     struct htt_tx_done tx_done = {};
     int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS);
     __le16 msdu_id, *msdus;
     bool rssi_enabled = false;
     u8 msdu_count = 0, num_airtime_records, tid;
     int i, htt_pad = 0;
     struct htt_data_tx_compl_ppdu_dur *ppdu_info;
     struct ath10k_peer *peer;
     u16 ppdu_info_offset = 0, peer_id;
     u32 tx_duration;
 
     switch (status) {
     case HTT_DATA_TX_STATUS_NO_ACK:
         tx_done.status = HTT_TX_COMPL_STATE_NOACK;
         break;
     case HTT_DATA_TX_STATUS_OK:
         tx_done.status = HTT_TX_COMPL_STATE_ACK;
         break;
     case HTT_DATA_TX_STATUS_DISCARD:
     case HTT_DATA_TX_STATUS_POSTPONE:
     case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL:
         tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
         break;
     default:
         ath10k_warn(ar, "unhandled tx completion status %d\n", status);
         tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
         break;
     }
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n",
            resp->data_tx_completion.num_msdus);
 
     msdu_count = resp->data_tx_completion.num_msdus;
     msdus = resp->data_tx_completion.msdus;
     rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp);
 
     if (rssi_enabled)
         htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params,
                                 resp);
 
     for (i = 0; i < msdu_count; i++) {
         msdu_id = msdus[i];
         tx_done.msdu_id = __le16_to_cpu(msdu_id);
 
         if (rssi_enabled) {
             /* Total no of MSDUs should be even,
              * if odd MSDUs are sent firmware fills
              * last msdu id with 0xffff
              */
             if (msdu_count & 0x01) {
                 msdu_id = msdus[msdu_count +  i + 1 + htt_pad];
                 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
             } else {
                 msdu_id = msdus[msdu_count +  i + htt_pad];
                 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
             }
         }
 
         /* kfifo_put: In practice firmware shouldn't fire off per-CE
          * interrupt and main interrupt (MSI/-X range case) for the same
          * HTC service so it should be safe to use kfifo_put w/o lock.
          *
          * From kfifo_put() documentation:
          *  Note that with only one concurrent reader and one concurrent
          *  writer, you don't need extra locking to use these macro.
          */
         if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
             ath10k_txrx_tx_unref(htt, &tx_done);
         } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
             ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
                     tx_done.msdu_id, tx_done.status);
             ath10k_txrx_tx_unref(htt, &tx_done);
         }
     }
 
     if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT))
         return;
 
     ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count;
 
     if (rssi_enabled)
         ppdu_info_offset += ppdu_info_offset;
 
     if (resp->data_tx_completion.flags2 &
         (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT))
         ppdu_info_offset += 2;
 
     ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset];
     num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK,
                     __le32_to_cpu(ppdu_info->info0));
 
     for (i = 0; i < num_airtime_records; i++) {
         struct htt_data_tx_ppdu_dur *ppdu_dur;
         u32 info0;
 
         ppdu_dur = &ppdu_info->ppdu_dur[i];
         info0 = __le32_to_cpu(ppdu_dur->info0);
 
         peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK,
                     info0);
         rcu_read_lock();
         spin_lock_bh(&ar->data_lock);
 
         peer = ath10k_peer_find_by_id(ar, peer_id);
         if (!peer || !peer->sta) {
             spin_unlock_bh(&ar->data_lock);
             rcu_read_unlock();
             continue;
         }
 
         tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) &
                         IEEE80211_QOS_CTL_TID_MASK;
         tx_duration = __le32_to_cpu(ppdu_dur->tx_duration);
 
         ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0);
 
         spin_unlock_bh(&ar->data_lock);
         rcu_read_unlock();
     }
 }
 
 static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp)
 {
     struct htt_rx_addba *ev = &resp->rx_addba;
     struct ath10k_peer *peer;
     struct ath10k_vif *arvif;
     u16 info0, tid, peer_id;
 
     info0 = __le16_to_cpu(ev->info0);
     tid = MS(info0, HTT_RX_BA_INFO0_TID);
     peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx addba tid %u peer_id %u size %u\n",
            tid, peer_id, ev->window_size);
 
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer) {
         ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
                 peer_id);
         spin_unlock_bh(&ar->data_lock);
         return;
     }
 
     arvif = ath10k_get_arvif(ar, peer->vdev_id);
     if (!arvif) {
         ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
                 peer->vdev_id);
         spin_unlock_bh(&ar->data_lock);
         return;
     }
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx start rx ba session sta %pM tid %u size %u\n",
            peer->addr, tid, ev->window_size);
 
     ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid);
     spin_unlock_bh(&ar->data_lock);
 }
 
 static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp)
 {
     struct htt_rx_delba *ev = &resp->rx_delba;
     struct ath10k_peer *peer;
     struct ath10k_vif *arvif;
     u16 info0, tid, peer_id;
 
     info0 = __le16_to_cpu(ev->info0);
     tid = MS(info0, HTT_RX_BA_INFO0_TID);
     peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx delba tid %u peer_id %u\n",
            tid, peer_id);
 
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer) {
         ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
                 peer_id);
         spin_unlock_bh(&ar->data_lock);
         return;
     }
 
     arvif = ath10k_get_arvif(ar, peer->vdev_id);
     if (!arvif) {
         ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
                 peer->vdev_id);
         spin_unlock_bh(&ar->data_lock);
         return;
     }
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx stop rx ba session sta %pM tid %u\n",
            peer->addr, tid);
 
     ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid);
     spin_unlock_bh(&ar->data_lock);
 }
 
 static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw,
                        struct sk_buff_head *list,
                        struct sk_buff_head *amsdu)
 {
     struct sk_buff *msdu;
     struct htt_rx_desc *rxd;
     struct rx_msdu_end_common *rxd_msdu_end_common;
 
     if (skb_queue_empty(list))
         return -ENOBUFS;
 
     if (WARN_ON(!skb_queue_empty(amsdu)))
         return -EINVAL;
 
     while ((msdu = __skb_dequeue(list))) {
         __skb_queue_tail(amsdu, msdu);
 
         rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                         (void *)msdu->data -
                         hw->rx_desc_ops->rx_desc_size);
 
         rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
         if (rxd_msdu_end_common->info0 &
             __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))
             break;
     }
 
     msdu = skb_peek_tail(amsdu);
     rxd = HTT_RX_BUF_TO_RX_DESC(hw,
                     (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
 
     rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
     if (!(rxd_msdu_end_common->info0 &
           __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) {
         skb_queue_splice_init(amsdu, list);
         return -EAGAIN;
     }
 
     return 0;
 }
 
 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status,
                         struct sk_buff *skb)
 {
     struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
     if (!ieee80211_has_protected(hdr->frame_control))
         return;
 
     /* Offloaded frames are already decrypted but firmware insists they are
      * protected in the 802.11 header. Strip the flag.  Otherwise mac80211
      * will drop the frame.
      */
 
     hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
     status->flag |= RX_FLAG_DECRYPTED |
             RX_FLAG_IV_STRIPPED |
             RX_FLAG_MMIC_STRIPPED;
 }
 
 static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar,
                        struct sk_buff_head *list)
 {
     struct ath10k_htt *htt = &ar->htt;
     struct ieee80211_rx_status *status = &htt->rx_status;
     struct htt_rx_offload_msdu *rx;
     struct sk_buff *msdu;
     size_t offset;
 
     while ((msdu = __skb_dequeue(list))) {
         /* Offloaded frames don't have Rx descriptor. Instead they have
          * a short meta information header.
          */
 
         rx = (void *)msdu->data;
 
         skb_put(msdu, sizeof(*rx));
         skb_pull(msdu, sizeof(*rx));
 
         if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) {
             ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n");
             dev_kfree_skb_any(msdu);
             continue;
         }
 
         skb_put(msdu, __le16_to_cpu(rx->msdu_len));
 
         /* Offloaded rx header length isn't multiple of 2 nor 4 so the
          * actual payload is unaligned. Align the frame.  Otherwise
          * mac80211 complains.  This shouldn't reduce performance much
          * because these offloaded frames are rare.
          */
         offset = 4 - ((unsigned long)msdu->data & 3);
         skb_put(msdu, offset);
         memmove(msdu->data + offset, msdu->data, msdu->len);
         skb_pull(msdu, offset);
 
         /* FIXME: The frame is NWifi. Re-construct QoS Control
          * if possible later.
          */
 
         memset(status, 0, sizeof(*status));
         status->flag |= RX_FLAG_NO_SIGNAL_VAL;
 
         ath10k_htt_rx_h_rx_offload_prot(status, msdu);
         ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id);
         ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
     }
 }
 
 static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
 {
     struct ath10k_htt *htt = &ar->htt;
     struct htt_resp *resp = (void *)skb->data;
     struct ieee80211_rx_status *status = &htt->rx_status;
     struct sk_buff_head list;
     struct sk_buff_head amsdu;
     u16 peer_id;
     u16 msdu_count;
     u8 vdev_id;
     u8 tid;
     bool offload;
     bool frag;
     int ret;
 
     lockdep_assert_held(&htt->rx_ring.lock);
 
     if (htt->rx_confused)
         return -EIO;
 
     skb_pull(skb, sizeof(resp->hdr));
     skb_pull(skb, sizeof(resp->rx_in_ord_ind));
 
     peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id);
     msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count);
     vdev_id = resp->rx_in_ord_ind.vdev_id;
     tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID);
     offload = !!(resp->rx_in_ord_ind.info &
             HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
     frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK);
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
            vdev_id, peer_id, tid, offload, frag, msdu_count);
 
     if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) {
         ath10k_warn(ar, "dropping invalid in order rx indication\n");
         return -EINVAL;
     }
 
     /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
      * extracted and processed.
      */
     __skb_queue_head_init(&list);
     if (ar->hw_params.target_64bit)
         ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind,
                              &list);
     else
         ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind,
                              &list);
 
     if (ret < 0) {
         ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
         htt->rx_confused = true;
         return -EIO;
     }
 
     /* Offloaded frames are very different and need to be handled
      * separately.
      */
     if (offload)
         ath10k_htt_rx_h_rx_offload(ar, &list);
 
     while (!skb_queue_empty(&list)) {
         __skb_queue_head_init(&amsdu);
         ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu);
         switch (ret) {
         case 0:
             /* Note: The in-order indication may report interleaved
              * frames from different PPDUs meaning reported rx rate
              * to mac80211 isn't accurate/reliable. It's still
              * better to report something than nothing though. This
              * should still give an idea about rx rate to the user.
              */
             ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id);
             ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL);
             ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL,
                          NULL, peer_id, frag);
             ath10k_htt_rx_h_enqueue(ar, &amsdu, status);
             break;
         case -EAGAIN:
             fallthrough;
         default:
             /* Should not happen. */
             ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
             htt->rx_confused = true;
             __skb_queue_purge(&list);
             return -EIO;
         }
     }
     return ret;
 }
 
 static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar,
                            const __le32 *resp_ids,
                            int num_resp_ids)
 {
     int i;
     u32 resp_id;
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n",
            num_resp_ids);
 
     for (i = 0; i < num_resp_ids; i++) {
         resp_id = le32_to_cpu(resp_ids[i]);
 
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n",
                resp_id);
 
         /* TODO: free resp_id */
     }
 }
 
 static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb)
 {
     struct ieee80211_hw *hw = ar->hw;
     struct ieee80211_txq *txq;
     struct htt_resp *resp = (struct htt_resp *)skb->data;
     struct htt_tx_fetch_record *record;
     size_t len;
     size_t max_num_bytes;
     size_t max_num_msdus;
     size_t num_bytes;
     size_t num_msdus;
     const __le32 *resp_ids;
     u16 num_records;
     u16 num_resp_ids;
     u16 peer_id;
     u8 tid;
     int ret;
     int i;
     bool may_tx;
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n");
 
     len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind);
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n");
         return;
     }
 
     num_records = le16_to_cpu(resp->tx_fetch_ind.num_records);
     num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids);
 
     len += sizeof(resp->tx_fetch_ind.records[0]) * num_records;
     len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids;
 
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n");
         return;
     }
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n",
            num_records, num_resp_ids,
            le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num));
 
     if (!ar->htt.tx_q_state.enabled) {
         ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n");
         return;
     }
 
     if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) {
         ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n");
         return;
     }
 
     rcu_read_lock();
 
     for (i = 0; i < num_records; i++) {
         record = &resp->tx_fetch_ind.records[i];
         peer_id = MS(le16_to_cpu(record->info),
                  HTT_TX_FETCH_RECORD_INFO_PEER_ID);
         tid = MS(le16_to_cpu(record->info),
              HTT_TX_FETCH_RECORD_INFO_TID);
         max_num_msdus = le16_to_cpu(record->num_msdus);
         max_num_bytes = le32_to_cpu(record->num_bytes);
 
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n",
                i, peer_id, tid, max_num_msdus, max_num_bytes);
 
         if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
             unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
             ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
                     peer_id, tid);
             continue;
         }
 
         spin_lock_bh(&ar->data_lock);
         txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
         spin_unlock_bh(&ar->data_lock);
 
         /* It is okay to release the lock and use txq because RCU read
          * lock is held.
          */
 
         if (unlikely(!txq)) {
             ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
                     peer_id, tid);
             continue;
         }
 
         num_msdus = 0;
         num_bytes = 0;
 
         ieee80211_txq_schedule_start(hw, txq->ac);
         may_tx = ieee80211_txq_may_transmit(hw, txq);
         while (num_msdus < max_num_msdus &&
                num_bytes < max_num_bytes) {
             if (!may_tx)
                 break;
 
             ret = ath10k_mac_tx_push_txq(hw, txq);
             if (ret < 0)
                 break;
 
             num_msdus++;
             num_bytes += ret;
         }
         ieee80211_return_txq(hw, txq, false);
         ieee80211_txq_schedule_end(hw, txq->ac);
 
         record->num_msdus = cpu_to_le16(num_msdus);
         record->num_bytes = cpu_to_le32(num_bytes);
 
         ath10k_htt_tx_txq_recalc(hw, txq);
     }
 
     rcu_read_unlock();
 
     resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind);
     ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids);
 
     ret = ath10k_htt_tx_fetch_resp(ar,
                        resp->tx_fetch_ind.token,
                        resp->tx_fetch_ind.fetch_seq_num,
                        resp->tx_fetch_ind.records,
                        num_records);
     if (unlikely(ret)) {
         ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n",
                 le32_to_cpu(resp->tx_fetch_ind.token), ret);
         /* FIXME: request fw restart */
     }
 
     ath10k_htt_tx_txq_sync(ar);
 }
 
 static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar,
                        struct sk_buff *skb)
 {
     const struct htt_resp *resp = (void *)skb->data;
     size_t len;
     int num_resp_ids;
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n");
 
     len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm);
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n");
         return;
     }
 
     num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids);
     len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids;
 
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n");
         return;
     }
 
     ath10k_htt_rx_tx_fetch_resp_id_confirm(ar,
                            resp->tx_fetch_confirm.resp_ids,
                            num_resp_ids);
 }
 
 static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar,
                          struct sk_buff *skb)
 {
     const struct htt_resp *resp = (void *)skb->data;
     const struct htt_tx_mode_switch_record *record;
     struct ieee80211_txq *txq;
     struct ath10k_txq *artxq;
     size_t len;
     size_t num_records;
     enum htt_tx_mode_switch_mode mode;
     bool enable;
     u16 info0;
     u16 info1;
     u16 threshold;
     u16 peer_id;
     u8 tid;
     int i;
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n");
 
     len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind);
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n");
         return;
     }
 
     info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0);
     info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1);
 
     enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE);
     num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
     mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE);
     threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
 
     ath10k_dbg(ar, ATH10K_DBG_HTT,
            "htt rx tx mode switch ind info0 0x%04x info1 0x%04x enable %d num records %zd mode %d threshold %u\n",
            info0, info1, enable, num_records, mode, threshold);
 
     len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records;
 
     if (unlikely(skb->len < len)) {
         ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n");
         return;
     }
 
     switch (mode) {
     case HTT_TX_MODE_SWITCH_PUSH:
     case HTT_TX_MODE_SWITCH_PUSH_PULL:
         break;
     default:
         ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n",
                 mode);
         return;
     }
 
     if (!enable)
         return;
 
     ar->htt.tx_q_state.enabled = enable;
     ar->htt.tx_q_state.mode = mode;
     ar->htt.tx_q_state.num_push_allowed = threshold;
 
     rcu_read_lock();
 
     for (i = 0; i < num_records; i++) {
         record = &resp->tx_mode_switch_ind.records[i];
         info0 = le16_to_cpu(record->info0);
         peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID);
         tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID);
 
         if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
             unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
             ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
                     peer_id, tid);
             continue;
         }
 
         spin_lock_bh(&ar->data_lock);
         txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
         spin_unlock_bh(&ar->data_lock);
 
         /* It is okay to release the lock and use txq because RCU read
          * lock is held.
          */
 
         if (unlikely(!txq)) {
             ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
                     peer_id, tid);
             continue;
         }
 
         spin_lock_bh(&ar->htt.tx_lock);
         artxq = (void *)txq->drv_priv;
         artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus);
         spin_unlock_bh(&ar->htt.tx_lock);
     }
 
     rcu_read_unlock();
 
     ath10k_mac_tx_push_pending(ar);
 }
 
 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
 {
     bool release;
 
     release = ath10k_htt_t2h_msg_handler(ar, skb);
 
     /* Free the indication buffer */
     if (release)
         dev_kfree_skb_any(skb);
 }
 
 static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate)
 {
     static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12,
                       18, 24, 36, 48, 54};
     int i;
 
     for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) {
         if (rate == legacy_rates[i])
             return i;
     }
 
     ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate);
     return -EINVAL;
 }
 
 static void
 ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar,
                     struct ath10k_sta *arsta,
                     struct ath10k_per_peer_tx_stats *pstats,
                     s8 legacy_rate_idx)
 {
     struct rate_info *txrate = &arsta->txrate;
     struct ath10k_htt_tx_stats *tx_stats;
     int idx, ht_idx, gi, mcs, bw, nss;
     unsigned long flags;
 
     if (!arsta->tx_stats)
         return;
 
     tx_stats = arsta->tx_stats;
     flags = txrate->flags;
     gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags);
     mcs = ATH10K_HW_MCS_RATE(pstats->ratecode);
     bw = txrate->bw;
     nss = txrate->nss;
     ht_idx = mcs + (nss - 1) * 8;
     idx = mcs * 8 + 8 * 10 * (nss - 1);
     idx += bw * 2 + gi;
 
 #define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name]
 
     if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
         STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes;
         STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts;
         STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes;
         STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts;
         STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes;
         STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts;
     } else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
         STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes;
         STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts;
         STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes;
         STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts;
         STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes;
         STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts;
     } else {
         mcs = legacy_rate_idx;
 
         STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes;
         STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts;
         STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes;
         STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts;
         STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes;
         STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts;
     }
 
     if (ATH10K_HW_AMPDU(pstats->flags)) {
         tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags);
 
         if (txrate->flags & RATE_INFO_FLAGS_MCS) {
             STATS_OP_FMT(AMPDU).ht[0][ht_idx] +=
                 pstats->succ_bytes + pstats->retry_bytes;
             STATS_OP_FMT(AMPDU).ht[1][ht_idx] +=
                 pstats->succ_pkts + pstats->retry_pkts;
         } else {
             STATS_OP_FMT(AMPDU).vht[0][mcs] +=
                 pstats->succ_bytes + pstats->retry_bytes;
             STATS_OP_FMT(AMPDU).vht[1][mcs] +=
                 pstats->succ_pkts + pstats->retry_pkts;
         }
         STATS_OP_FMT(AMPDU).bw[0][bw] +=
             pstats->succ_bytes + pstats->retry_bytes;
         STATS_OP_FMT(AMPDU).nss[0][nss - 1] +=
             pstats->succ_bytes + pstats->retry_bytes;
         STATS_OP_FMT(AMPDU).gi[0][gi] +=
             pstats->succ_bytes + pstats->retry_bytes;
         STATS_OP_FMT(AMPDU).rate_table[0][idx] +=
             pstats->succ_bytes + pstats->retry_bytes;
         STATS_OP_FMT(AMPDU).bw[1][bw] +=
             pstats->succ_pkts + pstats->retry_pkts;
         STATS_OP_FMT(AMPDU).nss[1][nss - 1] +=
             pstats->succ_pkts + pstats->retry_pkts;
         STATS_OP_FMT(AMPDU).gi[1][gi] +=
             pstats->succ_pkts + pstats->retry_pkts;
         STATS_OP_FMT(AMPDU).rate_table[1][idx] +=
             pstats->succ_pkts + pstats->retry_pkts;
     } else {
         tx_stats->ack_fails +=
                 ATH10K_HW_BA_FAIL(pstats->flags);
     }
 
     STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes;
     STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes;
     STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes;
 
     STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts;
     STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts;
     STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts;
 
     STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes;
     STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes;
     STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes;
 
     STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts;
     STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts;
     STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts;
 
     STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes;
     STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes;
     STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes;
 
     STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts;
     STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts;
     STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts;
 
     if (txrate->flags >= RATE_INFO_FLAGS_MCS) {
         STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes;
         STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts;
         STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes;
         STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts;
         STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes;
         STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts;
     }
 
     tx_stats->tx_duration += pstats->duration;
 }
 
 static void
 ath10k_update_per_peer_tx_stats(struct ath10k *ar,
                 struct ieee80211_sta *sta,
                 struct ath10k_per_peer_tx_stats *peer_stats)
 {
     struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
     struct ieee80211_chanctx_conf *conf = NULL;
     u8 rate = 0, sgi;
     s8 rate_idx = 0;
     bool skip_auto_rate;
     struct rate_info txrate;
 
     lockdep_assert_held(&ar->data_lock);
 
     txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode);
     txrate.bw = ATH10K_HW_BW(peer_stats->flags);
     txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode);
     txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode);
     sgi = ATH10K_HW_GI(peer_stats->flags);
     skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags);
 
     /* Firmware's rate control skips broadcast/management frames,
      * if host has configure fixed rates and in some other special cases.
      */
     if (skip_auto_rate)
         return;
 
     if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) {
         ath10k_warn(ar, "Invalid VHT mcs %d peer stats",  txrate.mcs);
         return;
     }
 
     if (txrate.flags == WMI_RATE_PREAMBLE_HT &&
         (txrate.mcs > 7 || txrate.nss < 1)) {
         ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats",
                 txrate.mcs, txrate.nss);
         return;
     }
 
     memset(&arsta->txrate, 0, sizeof(arsta->txrate));
     memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status));
     if (txrate.flags == WMI_RATE_PREAMBLE_CCK ||
         txrate.flags == WMI_RATE_PREAMBLE_OFDM) {
         rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode);
         /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */
         if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
             rate = 5;
         rate_idx = ath10k_get_legacy_rate_idx(ar, rate);
         if (rate_idx < 0)
             return;
         arsta->txrate.legacy = rate;
     } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
         arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
         arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1);
     } else {
         arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
         arsta->txrate.mcs = txrate.mcs;
     }
 
     switch (txrate.flags) {
     case WMI_RATE_PREAMBLE_OFDM:
         if (arsta->arvif && arsta->arvif->vif)
             conf = rcu_dereference(arsta->arvif->vif->bss_conf.chanctx_conf);
         if (conf && conf->def.chan->band == NL80211_BAND_5GHZ)
             arsta->tx_info.status.rates[0].idx = rate_idx - 4;
         break;
     case WMI_RATE_PREAMBLE_CCK:
         arsta->tx_info.status.rates[0].idx = rate_idx;
         if (sgi)
             arsta->tx_info.status.rates[0].flags |=
                 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE |
                  IEEE80211_TX_RC_SHORT_GI);
         break;
     case WMI_RATE_PREAMBLE_HT:
         arsta->tx_info.status.rates[0].idx =
                 txrate.mcs + ((txrate.nss - 1) * 8);
         if (sgi)
             arsta->tx_info.status.rates[0].flags |=
                     IEEE80211_TX_RC_SHORT_GI;
         arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS;
         break;
     case WMI_RATE_PREAMBLE_VHT:
         ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0],
                        txrate.mcs, txrate.nss);
         if (sgi)
             arsta->tx_info.status.rates[0].flags |=
                         IEEE80211_TX_RC_SHORT_GI;
         arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS;
         break;
     }
 
     arsta->txrate.nss = txrate.nss;
     arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw);
     arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate);
     if (sgi)
         arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 
     switch (arsta->txrate.bw) {
     case RATE_INFO_BW_40:
         arsta->tx_info.status.rates[0].flags |=
                 IEEE80211_TX_RC_40_MHZ_WIDTH;
         break;
     case RATE_INFO_BW_80:
         arsta->tx_info.status.rates[0].flags |=
                 IEEE80211_TX_RC_80_MHZ_WIDTH;
         break;
     case RATE_INFO_BW_160:
         arsta->tx_info.status.rates[0].flags |=
                 IEEE80211_TX_RC_160_MHZ_WIDTH;
         break;
     }
 
     if (peer_stats->succ_pkts) {
         arsta->tx_info.flags = IEEE80211_TX_STAT_ACK;
         arsta->tx_info.status.rates[0].count = 1;
         ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info);
     }
 
     if (ar->htt.disable_tx_comp) {
         arsta->tx_failed += peer_stats->failed_pkts;
         ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n",
                arsta->tx_failed);
     }
 
     arsta->tx_retries += peer_stats->retry_pkts;
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries);
 
     if (ath10k_debug_is_extd_tx_stats_enabled(ar))
         ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats,
                             rate_idx);
 }
 
 static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
                     struct sk_buff *skb)
 {
     struct htt_resp *resp = (struct htt_resp *)skb->data;
     struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
     struct htt_per_peer_tx_stats_ind *tx_stats;
     struct ieee80211_sta *sta;
     struct ath10k_peer *peer;
     int peer_id, i;
     u8 ppdu_len, num_ppdu;
 
     num_ppdu = resp->peer_tx_stats.num_ppdu;
     ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32);
 
     if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) {
         ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len);
         return;
     }
 
     tx_stats = (struct htt_per_peer_tx_stats_ind *)
             (resp->peer_tx_stats.payload);
     peer_id = __le16_to_cpu(tx_stats->peer_id);
 
     rcu_read_lock();
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer || !peer->sta) {
         ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n",
                 peer_id);
         goto out;
     }
 
     sta = peer->sta;
     for (i = 0; i < num_ppdu; i++) {
         tx_stats = (struct htt_per_peer_tx_stats_ind *)
                (resp->peer_tx_stats.payload + i * ppdu_len);
 
         p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes);
         p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes);
         p_tx_stats->failed_bytes =
                 __le32_to_cpu(tx_stats->failed_bytes);
         p_tx_stats->ratecode = tx_stats->ratecode;
         p_tx_stats->flags = tx_stats->flags;
         p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts);
         p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts);
         p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts);
         p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration);
 
         ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
     }
 
 out:
     spin_unlock_bh(&ar->data_lock);
     rcu_read_unlock();
 }
 
 static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data)
 {
     struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data;
     struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
     struct ath10k_10_2_peer_tx_stats *tx_stats;
     struct ieee80211_sta *sta;
     struct ath10k_peer *peer;
     u16 log_type = __le16_to_cpu(hdr->log_type);
     u32 peer_id = 0, i;
 
     if (log_type != ATH_PKTLOG_TYPE_TX_STAT)
         return;
 
     tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) +
             ATH10K_10_2_TX_STATS_OFFSET);
 
     if (!tx_stats->tx_ppdu_cnt)
         return;
 
     peer_id = tx_stats->peer_id;
 
     rcu_read_lock();
     spin_lock_bh(&ar->data_lock);
     peer = ath10k_peer_find_by_id(ar, peer_id);
     if (!peer || !peer->sta) {
         ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n",
                 peer_id);
         goto out;
     }
 
     sta = peer->sta;
     for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) {
         p_tx_stats->succ_bytes =
             __le16_to_cpu(tx_stats->success_bytes[i]);
         p_tx_stats->retry_bytes =
             __le16_to_cpu(tx_stats->retry_bytes[i]);
         p_tx_stats->failed_bytes =
             __le16_to_cpu(tx_stats->failed_bytes[i]);
         p_tx_stats->ratecode = tx_stats->ratecode[i];
         p_tx_stats->flags = tx_stats->flags[i];
         p_tx_stats->succ_pkts = tx_stats->success_pkts[i];
         p_tx_stats->retry_pkts = tx_stats->retry_pkts[i];
         p_tx_stats->failed_pkts = tx_stats->failed_pkts[i];
 
         ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
     }
     spin_unlock_bh(&ar->data_lock);
     rcu_read_unlock();
 
     return;
 
 out:
     spin_unlock_bh(&ar->data_lock);
     rcu_read_unlock();
 }
 
 static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type)
 {
     switch (sec_type) {
     case HTT_SECURITY_TKIP:
     case HTT_SECURITY_TKIP_NOMIC:
     case HTT_SECURITY_AES_CCMP:
         return 48;
     default:
         return 0;
     }
 }
 
 static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar,
                       struct htt_security_indication *ev)
 {
     enum htt_txrx_sec_cast_type sec_index;
     enum htt_security_types sec_type;
     struct ath10k_peer *peer;
 
     spin_lock_bh(&ar->data_lock);
 
     peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id));
     if (!peer) {
         ath10k_warn(ar, "failed to find peer id %d for security indication",
                 __le16_to_cpu(ev->peer_id));
         goto out;
     }
 
     sec_type = MS(ev->flags, HTT_SECURITY_TYPE);
 
     if (ev->flags & HTT_SECURITY_IS_UNICAST)
         sec_index = HTT_TXRX_SEC_UCAST;
     else
         sec_index = HTT_TXRX_SEC_MCAST;
 
     peer->rx_pn[sec_index].sec_type = sec_type;
     peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type);
 
     memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid));
     memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn));
 
 out:
     spin_unlock_bh(&ar->data_lock);
 }
 
 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
 {
     struct ath10k_htt *htt = &ar->htt;
     struct htt_resp *resp = (struct htt_resp *)skb->data;
     enum htt_t2h_msg_type type;
 
     /* confirm alignment */
     if (!IS_ALIGNED((unsigned long)skb->data, 4))
         ath10k_warn(ar, "unaligned htt message, expect trouble\n");
 
     ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n",
            resp->hdr.msg_type);
 
     if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) {
         ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
                resp->hdr.msg_type, ar->htt.t2h_msg_types_max);
         return true;
     }
     type = ar->htt.t2h_msg_types[resp->hdr.msg_type];
 
     switch (type) {
     case HTT_T2H_MSG_TYPE_VERSION_CONF: {
         htt->target_version_major = resp->ver_resp.major;
         htt->target_version_minor = resp->ver_resp.minor;
         complete(&htt->target_version_received);
         break;
     }
     case HTT_T2H_MSG_TYPE_RX_IND:
         if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) {
             ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind);
         } else {
             skb_queue_tail(&htt->rx_indication_head, skb);
             return false;
         }
         break;
     case HTT_T2H_MSG_TYPE_PEER_MAP: {
         struct htt_peer_map_event ev = {
             .vdev_id = resp->peer_map.vdev_id,
             .peer_id = __le16_to_cpu(resp->peer_map.peer_id),
         };
         memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr));
         ath10k_peer_map_event(htt, &ev);
         break;
     }
     case HTT_T2H_MSG_TYPE_PEER_UNMAP: {
         struct htt_peer_unmap_event ev = {
             .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id),
         };
         ath10k_peer_unmap_event(htt, &ev);
         break;
     }
     case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: {
         struct htt_tx_done tx_done = {};
         struct ath10k_htt *htt = &ar->htt;
         struct ath10k_htc *htc = &ar->htc;
         struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
         int status = __le32_to_cpu(resp->mgmt_tx_completion.status);
         int info = __le32_to_cpu(resp->mgmt_tx_completion.info);
 
         tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id);
 
         switch (status) {
         case HTT_MGMT_TX_STATUS_OK:
             tx_done.status = HTT_TX_COMPL_STATE_ACK;
             if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS,
                      ar->wmi.svc_map) &&
                 (resp->mgmt_tx_completion.flags &
                  HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) {
                 tx_done.ack_rssi =
                 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK,
                       info);
             }
             break;
         case HTT_MGMT_TX_STATUS_RETRY:
             tx_done.status = HTT_TX_COMPL_STATE_NOACK;
             break;
         case HTT_MGMT_TX_STATUS_DROP:
             tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
             break;
         }
 
         if (htt->disable_tx_comp) {
             spin_lock_bh(&htc->tx_lock);
             ep->tx_credits++;
             spin_unlock_bh(&htc->tx_lock);
         }
 
         status = ath10k_txrx_tx_unref(htt, &tx_done);
         if (!status) {
             spin_lock_bh(&htt->tx_lock);
             ath10k_htt_tx_mgmt_dec_pending(htt);
             spin_unlock_bh(&htt->tx_lock);
         }
         break;
     }
     case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
         ath10k_htt_rx_tx_compl_ind(htt->ar, skb);
         break;
     case HTT_T2H_MSG_TYPE_SEC_IND: {
         struct ath10k *ar = htt->ar;
         struct htt_security_indication *ev = &resp->security_indication;
 
         ath10k_htt_rx_sec_ind_handler(ar, ev);
         ath10k_dbg(ar, ATH10K_DBG_HTT,
                "sec ind peer_id %d unicast %d type %d\n",
               __le16_to_cpu(ev->peer_id),
               !!(ev->flags & HTT_SECURITY_IS_UNICAST),
               MS(ev->flags, HTT_SECURITY_TYPE));
         complete(&ar->install_key_done);
         break;
     }
     case HTT_T2H_MSG_TYPE_RX_FRAG_IND: {
         ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
                 skb->data, skb->len);
         atomic_inc(&htt->num_mpdus_ready);
 
         return ath10k_htt_rx_proc_rx_frag_ind(htt,
                               &resp->rx_frag_ind,
                               skb);
     }
     case HTT_T2H_MSG_TYPE_TEST:
         break;
     case HTT_T2H_MSG_TYPE_STATS_CONF:
         trace_ath10k_htt_stats(ar, skb->data, skb->len);
         break;
     case HTT_T2H_MSG_TYPE_TX_INSPECT_IND:
         /* Firmware can return tx frames if it's unable to fully
          * process them and suspects host may be able to fix it. ath10k
          * sends all tx frames as already inspected so this shouldn't
          * happen unless fw has a bug.
          */
         ath10k_warn(ar, "received an unexpected htt tx inspect event\n");
         break;
     case HTT_T2H_MSG_TYPE_RX_ADDBA:
         ath10k_htt_rx_addba(ar, resp);
         break;
     case HTT_T2H_MSG_TYPE_RX_DELBA:
         ath10k_htt_rx_delba(ar, resp);
         break;
     case HTT_T2H_MSG_TYPE_PKTLOG: {
         trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload,
                     skb->len -
                     offsetof(struct htt_resp,
                          pktlog_msg.payload));
 
         if (ath10k_peer_stats_enabled(ar))
             ath10k_fetch_10_2_tx_stats(ar,
                            resp->pktlog_msg.payload);
         break;
     }
     case HTT_T2H_MSG_TYPE_RX_FLUSH: {
         /* Ignore this event because mac80211 takes care of Rx
          * aggregation reordering.
          */
         break;
     }
     case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
         skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
         return false;
     }
     case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
         struct ath10k_htt *htt = &ar->htt;
         struct ath10k_htc *htc = &ar->htc;
         struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
         u32 msg_word = __le32_to_cpu(*(__le32 *)resp);
         int htt_credit_delta;
 
         htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word);
         if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word))
             htt_credit_delta = -htt_credit_delta;
 
         ath10k_dbg(ar, ATH10K_DBG_HTT,
                "htt credit update delta %d\n",
                htt_credit_delta);
 
         if (htt->disable_tx_comp) {
             spin_lock_bh(&htc->tx_lock);
             ep->tx_credits += htt_credit_delta;
             spin_unlock_bh(&htc->tx_lock);
             ath10k_dbg(ar, ATH10K_DBG_HTT,
                    "htt credit total %d\n",
                    ep->tx_credits);
             ep->ep_ops.ep_tx_credits(htc->ar);
         }
         break;
     }
     case HTT_T2H_MSG_TYPE_CHAN_CHANGE: {
         u32 phymode = __le32_to_cpu(resp->chan_change.phymode);
         u32 freq = __le32_to_cpu(resp->chan_change.freq);
 
         ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq);
         ath10k_dbg(ar, ATH10K_DBG_HTT,
                "htt chan change freq %u phymode %s\n",
                freq, ath10k_wmi_phymode_str(phymode));
         break;
     }
     case HTT_T2H_MSG_TYPE_AGGR_CONF:
         break;
     case HTT_T2H_MSG_TYPE_TX_FETCH_IND: {
         struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC);
 
         if (!tx_fetch_ind) {
             ath10k_warn(ar, "failed to copy htt tx fetch ind\n");
             break;
         }
         skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind);
         break;
     }
     case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM:
         ath10k_htt_rx_tx_fetch_confirm(ar, skb);
         break;
     case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND:
         ath10k_htt_rx_tx_mode_switch_ind(ar, skb);
         break;
     case HTT_T2H_MSG_TYPE_PEER_STATS:
         ath10k_htt_fetch_peer_stats(ar, skb);
         break;
     case HTT_T2H_MSG_TYPE_EN_STATS:
     default:
         ath10k_warn(ar, "htt event (%d) not handled\n",
                 resp->hdr.msg_type);
         ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
                 skb->data, skb->len);
         break;
     }
     return true;
 }
 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
 
 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
                          struct sk_buff *skb)
 {
     trace_ath10k_htt_pktlog(ar, skb->data, skb->len);
     dev_kfree_skb_any(skb);
 }
 EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler);
 
 static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget)
 {
     struct sk_buff *skb;
 
     while (quota < budget) {
         if (skb_queue_empty(&ar->htt.rx_msdus_q))
             break;
 
         skb = skb_dequeue(&ar->htt.rx_msdus_q);
         if (!skb)
             break;
         ath10k_process_rx(ar, skb);
         quota++;
     }
 
     return quota;
 }
 
 int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
 {
     struct htt_resp *resp;
     struct ath10k_htt *htt = &ar->htt;
     struct sk_buff *skb;
     bool release;
     int quota;
 
     for (quota = 0; quota < budget; quota++) {
         skb = skb_dequeue(&htt->rx_indication_head);
         if (!skb)
             break;
 
         resp = (struct htt_resp *)skb->data;
 
         release = ath10k_htt_rx_proc_rx_ind_hl(htt,
                                &resp->rx_ind_hl,
                                skb,
                                HTT_RX_PN_CHECK,
                                HTT_RX_NON_TKIP_MIC);
 
         if (release)
             dev_kfree_skb_any(skb);
 
         ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n",
                skb_queue_len(&htt->rx_indication_head));
     }
     return quota;
 }
 EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
 
 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
 {
     struct ath10k_htt *htt = &ar->htt;
     struct htt_tx_done tx_done = {};
     struct sk_buff_head tx_ind_q;
     struct sk_buff *skb;
     unsigned long flags;
     int quota = 0, done, ret;
     bool resched_napi = false;
 
     __skb_queue_head_init(&tx_ind_q);
 
     /* Process pending frames before dequeuing more data
      * from hardware.
      */
     quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
     if (quota == budget) {
         resched_napi = true;
         goto exit;
     }
 
     while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
         spin_lock_bh(&htt->rx_ring.lock);
         ret = ath10k_htt_rx_in_ord_ind(ar, skb);
         spin_unlock_bh(&htt->rx_ring.lock);
 
         dev_kfree_skb_any(skb);
         if (ret == -EIO) {
             resched_napi = true;
             goto exit;
         }
     }
 
     while (atomic_read(&htt->num_mpdus_ready)) {
         ret = ath10k_htt_rx_handle_amsdu(htt);
         if (ret == -EIO) {
             resched_napi = true;
             goto exit;
         }
         atomic_dec(&htt->num_mpdus_ready);
     }
 
     /* Deliver received data after processing data from hardware */
     quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
 
     /* From NAPI documentation:
      *  The napi poll() function may also process TX completions, in which
      *  case if it processes the entire TX ring then it should count that
      *  work as the rest of the budget.
      */
     if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo))
         quota = budget;
 
     /* kfifo_get: called only within txrx_tasklet so it's neatly serialized.
      * From kfifo_get() documentation:
      *  Note that with only one concurrent reader and one concurrent writer,
      *  you don't need extra locking to use these macro.
      */
     while (kfifo_get(&htt->txdone_fifo, &tx_done))
         ath10k_txrx_tx_unref(htt, &tx_done);
 
     ath10k_mac_tx_push_pending(ar);
 
     spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags);
     skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q);
     spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags);
 
     while ((skb = __skb_dequeue(&tx_ind_q))) {
         ath10k_htt_rx_tx_fetch_ind(ar, skb);
         dev_kfree_skb_any(skb);
     }
 
 exit:
     ath10k_htt_rx_msdu_buff_replenish(htt);
     /* In case of rx failure or more data to read, report budget
      * to reschedule NAPI poll
      */
     done = resched_napi ? budget : quota;
 
     return done;
 }
 EXPORT_SYMBOL(ath10k_htt_txrx_compl_task);
 
 static const struct ath10k_htt_rx_ops htt_rx_ops_32 = {
     .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32,
     .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32,
     .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32,
     .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32,
     .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32,
 };
 
 static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
     .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64,
     .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64,
     .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64,
     .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64,
     .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64,
 };
 
 static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
     .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
 };
 
 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
 {
     struct ath10k *ar = htt->ar;
 
     if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
         htt->rx_ops = &htt_rx_ops_hl;
     else if (ar->hw_params.target_64bit)
         htt->rx_ops = &htt_rx_ops_64;
     else
         htt->rx_ops = &htt_rx_ops_32;
 }