Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 4475 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
new file mode 100644
index 000000000..e76aab973
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -0,0 +1,4475 @@
+// 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);
+
+	ath10k_htt_config_paddrs_ring(htt, NULL);
+
+	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);
+	htt->rx_ring.alloc_idx.vaddr = NULL;
+
+	kfree(htt->rx_ring.netbufs_ring);
+	htt->rx_ring.netbufs_ring = NULL;
+}
+
+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);
+	ath10k_htt_config_paddrs_ring(htt, NULL);
+err_dma_ring:
+	kfree(htt->rx_ring.netbufs_ring);
+	htt->rx_ring.netbufs_ring = NULL;
+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 limitation 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;
+}