drivers/net/wireless/ath/ath10k/txrx.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include "core.h"
 #include "txrx.h"
 #include "htt.h"
 #include "mac.h"
 #include "debug.h"

 static void ath10k_report_offchan_tx(struct ath10k *ar, struct sk_buff *skb)
 {
 	if (!ATH10K_SKB_CB(skb)->htt.is_offchan)
 		return;

 	/* If the original wait_for_completion() timed out before
 	 * {data,mgmt}_tx_completed() was called then we could complete
 	 * offchan_tx_completed for a different skb. Prevent this by using
 	 * offchan_tx_skb. */
 	spin_lock_bh(&ar->data_lock);
 	if (ar->offchan_tx_skb != skb) {
 		ath10k_warn("completed old offchannel frame\n");
 		goto out;
 	}

 	complete(&ar->offchan_tx_completed);
 	ar->offchan_tx_skb = NULL; /* just for sanity */

 	ath10k_dbg(ATH10K_DBG_HTT, "completed offchannel skb %p\n", skb);
 out:
 	spin_unlock_bh(&ar->data_lock);
 }

 void ath10k_txrx_tx_unref(struct ath10k_htt *htt,
 			  const struct htt_tx_done *tx_done)
 {
 	struct device *dev = htt->ar->dev;
 	struct ieee80211_tx_info *info;
 	struct ath10k_skb_cb *skb_cb;
 	struct sk_buff *msdu;
 	int ret;

 	ath10k_dbg(ATH10K_DBG_HTT, "htt tx completion msdu_id %u discard %d no_ack %d\n",
 		   tx_done->msdu_id, !!tx_done->discard, !!tx_done->no_ack);

 	if (tx_done->msdu_id >= htt->max_num_pending_tx) {
 		ath10k_warn("warning: msdu_id %d too big, ignoring\n",
 			    tx_done->msdu_id);
 		return;
 	}

 	msdu = htt->pending_tx[tx_done->msdu_id];
 	skb_cb = ATH10K_SKB_CB(msdu);

 	ret = ath10k_skb_unmap(dev, msdu);
 	if (ret)
 		ath10k_warn("data skb unmap failed (%d)\n", ret);

 	if (skb_cb->htt.frag_len)
 		skb_pull(msdu, skb_cb->htt.frag_len + skb_cb->htt.pad_len);

 	ath10k_report_offchan_tx(htt->ar, msdu);

 	info = IEEE80211_SKB_CB(msdu);

 	if (tx_done->discard) {
 		ieee80211_free_txskb(htt->ar->hw, msdu);
 		goto exit;
 	}

 	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
 		info->flags |= IEEE80211_TX_STAT_ACK;

 	if (tx_done->no_ack)
 		info->flags &= ~IEEE80211_TX_STAT_ACK;

 	ieee80211_tx_status(htt->ar->hw, msdu);
 	/* we do not own the msdu anymore */

 exit:
 	spin_lock_bh(&htt->tx_lock);
 	htt->pending_tx[tx_done->msdu_id] = NULL;
 	ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
 	__ath10k_htt_tx_dec_pending(htt);
 	if (htt->num_pending_tx == 0)
 		wake_up(&htt->empty_tx_wq);
 	spin_unlock_bh(&htt->tx_lock);
 }

 static const u8 rx_legacy_rate_idx[] = {
 	3,	/* 0x00  - 11Mbps  */
 	2,	/* 0x01  - 5.5Mbps */
 	1,	/* 0x02  - 2Mbps   */
 	0,	/* 0x03  - 1Mbps   */
 	3,	/* 0x04  - 11Mbps  */
 	2,	/* 0x05  - 5.5Mbps */
 	1,	/* 0x06  - 2Mbps   */
 	0,	/* 0x07  - 1Mbps   */
 	10,	/* 0x08  - 48Mbps  */
 	8,	/* 0x09  - 24Mbps  */
 	6,	/* 0x0A  - 12Mbps  */
 	4,	/* 0x0B  - 6Mbps   */
 	11,	/* 0x0C  - 54Mbps  */
 	9,	/* 0x0D  - 36Mbps  */
 	7,	/* 0x0E  - 18Mbps  */
 	5,	/* 0x0F  - 9Mbps   */
 };

 static void process_rx_rates(struct ath10k *ar, struct htt_rx_info *info,
 			     enum ieee80211_band band,
 			     struct ieee80211_rx_status *status)
 {
 	u8 cck, rate, rate_idx, bw, sgi, mcs, nss;
 	u8 info0 = info->rate.info0;
 	u32 info1 = info->rate.info1;
 	u32 info2 = info->rate.info2;
 	u8 preamble = 0;

 	/* Check if valid fields */
 	if (!(info0 & HTT_RX_INDICATION_INFO0_START_VALID))
 		return;

 	preamble = MS(info1, HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE);

 	switch (preamble) {
 	case HTT_RX_LEGACY:
 		cck = info0 & HTT_RX_INDICATION_INFO0_LEGACY_RATE_CCK;
 		rate = MS(info0, HTT_RX_INDICATION_INFO0_LEGACY_RATE);
 		rate_idx = 0;

 		if (rate < 0x08 || rate > 0x0F)
 			break;

 		switch (band) {
 		case IEEE80211_BAND_2GHZ:
 			if (cck)
 				rate &= ~BIT(3);
 			rate_idx = rx_legacy_rate_idx[rate];
 			break;
 		case IEEE80211_BAND_5GHZ:
 			rate_idx = rx_legacy_rate_idx[rate];
 			/* We are using same rate table registering
 			   HW - ath10k_rates[]. In case of 5GHz skip
 			   CCK rates, so -4 here */
 			rate_idx -= 4;
 			break;
 		default:
 			break;
 		}

 		status->rate_idx = rate_idx;
 		break;
 	case HTT_RX_HT:
 	case HTT_RX_HT_WITH_TXBF:
 		/* HT-SIG - Table 20-11 in info1 and info2 */
 		mcs = info1 & 0x1F;
 		nss = mcs >> 3;
 		bw = (info1 >> 7) & 1;
 		sgi = (info2 >> 7) & 1;

 		status->rate_idx = mcs;
 		status->flag |= RX_FLAG_HT;
 		if (sgi)
 			status->flag |= RX_FLAG_SHORT_GI;
 		if (bw)
 			status->flag |= RX_FLAG_40MHZ;
 		break;
 	case HTT_RX_VHT:
 	case HTT_RX_VHT_WITH_TXBF:
 		/* VHT-SIG-A1 in info 1, VHT-SIG-A2 in info2
 		   TODO check this */
 		mcs = (info2 >> 4) & 0x0F;
 		nss = (info1 >> 10) & 0x07;
 		bw = info1 & 3;
 		sgi = info2 & 1;

 		status->rate_idx = mcs;
 		status->vht_nss = nss;

 		if (sgi)
 			status->flag |= RX_FLAG_SHORT_GI;

 		switch (bw) {
 		/* 20MHZ */
 		case 0:
 			break;
 		/* 40MHZ */
 		case 1:
 			status->flag |= RX_FLAG_40MHZ;
 			break;
 		/* 80MHZ */
 		case 2:
 			status->flag |= RX_FLAG_80MHZ;
 		}

 		status->flag |= RX_FLAG_VHT;
 		break;
 	default:
 		break;
 	}
 }

 void ath10k_process_rx(struct ath10k *ar, struct htt_rx_info *info)
 {
 	struct ieee80211_rx_status *status;
 	struct ieee80211_channel *ch;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)info->skb->data;

 	status = IEEE80211_SKB_RXCB(info->skb);
 	memset(status, 0, sizeof(*status));

 	if (info->encrypt_type != HTT_RX_MPDU_ENCRYPT_NONE) {
 		status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_IV_STRIPPED |
 				RX_FLAG_MMIC_STRIPPED;
 		hdr->frame_control = __cpu_to_le16(
 				__le16_to_cpu(hdr->frame_control) &
 				~IEEE80211_FCTL_PROTECTED);
 	}

 	if (info->status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
 		status->flag |= RX_FLAG_MMIC_ERROR;

 	if (info->fcs_err)
 		status->flag |= RX_FLAG_FAILED_FCS_CRC;

 	status->signal = info->signal;

 	spin_lock_bh(&ar->data_lock);
 	ch = ar->scan_channel;
 	if (!ch)
 		ch = ar->rx_channel;
 	spin_unlock_bh(&ar->data_lock);

 	if (!ch) {
 		ath10k_warn("no channel configured; ignoring frame!\n");
 		dev_kfree_skb_any(info->skb);
 		return;
 	}

 	process_rx_rates(ar, info, ch->band, status);
 	status->band = ch->band;
 	status->freq = ch->center_freq;

 	ath10k_dbg(ATH10K_DBG_DATA,
 		   "rx skb %p len %u %s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u\n",
 		   info->skb,
 		   info->skb->len,
 		   status->flag == 0 ? "legacy" : "",
 		   status->flag & RX_FLAG_HT ? "ht" : "",
 		   status->flag & RX_FLAG_VHT ? "vht" : "",
 		   status->flag & RX_FLAG_40MHZ ? "40" : "",
 		   status->flag & RX_FLAG_80MHZ ? "80" : "",
 		   status->flag & RX_FLAG_SHORT_GI ? "sgi " : "",
 		   status->rate_idx,
 		   status->vht_nss,
 		   status->freq,
 		   status->band);
 	ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
 			info->skb->data, info->skb->len);

 	ieee80211_rx(ar->hw, info->skb);
 }

 struct ath10k_peer *ath10k_peer_find(struct ath10k *ar, int vdev_id,
 				     const u8 *addr)
 {
 	struct ath10k_peer *peer;

 	lockdep_assert_held(&ar->data_lock);

 	list_for_each_entry(peer, &ar->peers, list) {
 		if (peer->vdev_id != vdev_id)
 			continue;
 		if (memcmp(peer->addr, addr, ETH_ALEN))
 			continue;

 		return peer;
 	}

 	return NULL;
 }

 static struct ath10k_peer *ath10k_peer_find_by_id(struct ath10k *ar,
 						  int peer_id)
 {
 	struct ath10k_peer *peer;

 	lockdep_assert_held(&ar->data_lock);

 	list_for_each_entry(peer, &ar->peers, list)
 		if (test_bit(peer_id, peer->peer_ids))
 			return peer;

 	return NULL;
 }

 static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
 				       const u8 *addr, bool expect_mapped)
 {
 	int ret;

 	ret = wait_event_timeout(ar->peer_mapping_wq, ({
 			bool mapped;

 			spin_lock_bh(&ar->data_lock);
 			mapped = !!ath10k_peer_find(ar, vdev_id, addr);
 			spin_unlock_bh(&ar->data_lock);

 			mapped == expect_mapped;
 		}), 3*HZ);

 	if (ret <= 0)
 		return -ETIMEDOUT;

 	return 0;
 }

 int ath10k_wait_for_peer_created(struct ath10k *ar, int vdev_id, const u8 *addr)
 {
 	return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
 }

 int ath10k_wait_for_peer_deleted(struct ath10k *ar, int vdev_id, const u8 *addr)
 {
 	return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
 }

 void ath10k_peer_map_event(struct ath10k_htt *htt,
 			   struct htt_peer_map_event *ev)
 {
 	struct ath10k *ar = htt->ar;
 	struct ath10k_peer *peer;

 	spin_lock_bh(&ar->data_lock);
 	peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
 	if (!peer) {
 		peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
 		if (!peer)
 			goto exit;

 		peer->vdev_id = ev->vdev_id;
 		memcpy(peer->addr, ev->addr, ETH_ALEN);
 		list_add(&peer->list, &ar->peers);
 		wake_up(&ar->peer_mapping_wq);
 	}

 	ath10k_dbg(ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
 		   ev->vdev_id, ev->addr, ev->peer_id);

 	set_bit(ev->peer_id, peer->peer_ids);
 exit:
 	spin_unlock_bh(&ar->data_lock);
 }

 void ath10k_peer_unmap_event(struct ath10k_htt *htt,
 			     struct htt_peer_unmap_event *ev)
 {
 	struct ath10k *ar = htt->ar;
 	struct ath10k_peer *peer;

 	spin_lock_bh(&ar->data_lock);
 	peer = ath10k_peer_find_by_id(ar, ev->peer_id);
 	if (!peer) {
 		ath10k_warn("unknown peer id %d\n", ev->peer_id);
 		goto exit;
 	}

 	ath10k_dbg(ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
 		   peer->vdev_id, peer->addr, ev->peer_id);

 	clear_bit(ev->peer_id, peer->peer_ids);

 	if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
 		list_del(&peer->list);
 		kfree(peer);
 		wake_up(&ar->peer_mapping_wq);
 	}

 exit:
 	spin_unlock_bh(&ar->data_lock);
 }
	/*
	* Copyright (c) 2005-2011 Atheros Communications Inc.
	* Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
	*
	* Permission to use, copy, modify, and/or distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include "core.h"
	#include "txrx.h"
	#include "htt.h"
	#include "mac.h"
	#include "debug.h"

	static void ath10k_report_offchan_tx(struct ath10k ar, struct sk_buff skb)
	{
	if (!ATH10K_SKB_CB(skb)->htt.is_offchan)
	return;

	/* If the original wait_for_completion() timed out before
	* {data,mgmt}_tx_completed() was called then we could complete
	* offchan_tx_completed for a different skb. Prevent this by using
	* offchan_tx_skb. */
	spin_lock_bh(&ar->data_lock);
	if (ar->offchan_tx_skb != skb) {
	ath10k_warn("completed old offchannel frame\n");
	goto out;
	}

	complete(&ar->offchan_tx_completed);
	ar->offchan_tx_skb = NULL; /* just for sanity */

	ath10k_dbg(ATH10K_DBG_HTT, "completed offchannel skb %p\n", skb);
	out:
	spin_unlock_bh(&ar->data_lock);
	}

	void ath10k_txrx_tx_unref(struct ath10k_htt *htt,
	const struct htt_tx_done *tx_done)
	{
	struct device *dev = htt->ar->dev;
	struct ieee80211_tx_info *info;
	struct ath10k_skb_cb *skb_cb;
	struct sk_buff *msdu;
	int ret;

	ath10k_dbg(ATH10K_DBG_HTT, "htt tx completion msdu_id %u discard %d no_ack %d\n",
	tx_done->msdu_id, !!tx_done->discard, !!tx_done->no_ack);

	if (tx_done->msdu_id >= htt->max_num_pending_tx) {
	ath10k_warn("warning: msdu_id %d too big, ignoring\n",
	tx_done->msdu_id);
	return;
	}

	msdu = htt->pending_tx[tx_done->msdu_id];
	skb_cb = ATH10K_SKB_CB(msdu);

	ret = ath10k_skb_unmap(dev, msdu);
	if (ret)
	ath10k_warn("data skb unmap failed (%d)\n", ret);

	if (skb_cb->htt.frag_len)
	skb_pull(msdu, skb_cb->htt.frag_len + skb_cb->htt.pad_len);

	ath10k_report_offchan_tx(htt->ar, msdu);

	info = IEEE80211_SKB_CB(msdu);

	if (tx_done->discard) {
	ieee80211_free_txskb(htt->ar->hw, msdu);
	goto exit;
	}

	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
	info->flags \|= IEEE80211_TX_STAT_ACK;

	if (tx_done->no_ack)
	info->flags &= ~IEEE80211_TX_STAT_ACK;

	ieee80211_tx_status(htt->ar->hw, msdu);
	/* we do not own the msdu anymore */

	exit:
	spin_lock_bh(&htt->tx_lock);
	htt->pending_tx[tx_done->msdu_id] = NULL;
	ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
	__ath10k_htt_tx_dec_pending(htt);
	if (htt->num_pending_tx == 0)
	wake_up(&htt->empty_tx_wq);
	spin_unlock_bh(&htt->tx_lock);
	}

	static const u8 rx_legacy_rate_idx[] = {
	3, /* 0x00 - 11Mbps */
	2, /* 0x01 - 5.5Mbps */
	1, /* 0x02 - 2Mbps */
	0, /* 0x03 - 1Mbps */
	3, /* 0x04 - 11Mbps */
	2, /* 0x05 - 5.5Mbps */
	1, /* 0x06 - 2Mbps */
	0, /* 0x07 - 1Mbps */
	10, /* 0x08 - 48Mbps */
	8, /* 0x09 - 24Mbps */
	6, /* 0x0A - 12Mbps */
	4, /* 0x0B - 6Mbps */
	11, /* 0x0C - 54Mbps */
	9, /* 0x0D - 36Mbps */
	7, /* 0x0E - 18Mbps */
	5, /* 0x0F - 9Mbps */
	};

	static void process_rx_rates(struct ath10k ar, struct htt_rx_info info,
	enum ieee80211_band band,
	struct ieee80211_rx_status *status)
	{
	u8 cck, rate, rate_idx, bw, sgi, mcs, nss;
	u8 info0 = info->rate.info0;
	u32 info1 = info->rate.info1;
	u32 info2 = info->rate.info2;
	u8 preamble = 0;

	/* Check if valid fields */
	if (!(info0 & HTT_RX_INDICATION_INFO0_START_VALID))
	return;

	preamble = MS(info1, HTT_RX_INDICATION_INFO1_PREAMBLE_TYPE);

	switch (preamble) {
	case HTT_RX_LEGACY:
	cck = info0 & HTT_RX_INDICATION_INFO0_LEGACY_RATE_CCK;
	rate = MS(info0, HTT_RX_INDICATION_INFO0_LEGACY_RATE);
	rate_idx = 0;

	if (rate < 0x08 \|\| rate > 0x0F)
	break;

	switch (band) {
	case IEEE80211_BAND_2GHZ:
	if (cck)
	rate &= ~BIT(3);
	rate_idx = rx_legacy_rate_idx[rate];
	break;
	case IEEE80211_BAND_5GHZ:
	rate_idx = rx_legacy_rate_idx[rate];
	/* We are using same rate table registering
	HW - ath10k_rates[]. In case of 5GHz skip
	CCK rates, so -4 here */
	rate_idx -= 4;
	break;
	default:
	break;
	}

	status->rate_idx = rate_idx;
	break;
	case HTT_RX_HT:
	case HTT_RX_HT_WITH_TXBF:
	/* HT-SIG - Table 20-11 in info1 and info2 */
	mcs = info1 & 0x1F;
	nss = mcs >> 3;
	bw = (info1 >> 7) & 1;
	sgi = (info2 >> 7) & 1;

	status->rate_idx = mcs;
	status->flag \|= RX_FLAG_HT;
	if (sgi)
	status->flag \|= RX_FLAG_SHORT_GI;
	if (bw)
	status->flag \|= RX_FLAG_40MHZ;
	break;
	case HTT_RX_VHT:
	case HTT_RX_VHT_WITH_TXBF:
	/* VHT-SIG-A1 in info 1, VHT-SIG-A2 in info2
	TODO check this */
	mcs = (info2 >> 4) & 0x0F;
	nss = (info1 >> 10) & 0x07;
	bw = info1 & 3;
	sgi = info2 & 1;

	status->rate_idx = mcs;
	status->vht_nss = nss;

	if (sgi)
	status->flag \|= RX_FLAG_SHORT_GI;

	switch (bw) {
	/* 20MHZ */
	case 0:
	break;
	/* 40MHZ */
	case 1:
	status->flag \|= RX_FLAG_40MHZ;
	break;
	/* 80MHZ */
	case 2:
	status->flag \|= RX_FLAG_80MHZ;
	}

	status->flag \|= RX_FLAG_VHT;
	break;
	default:
	break;
	}
	}

	void ath10k_process_rx(struct ath10k ar, struct htt_rx_info info)
	{
	struct ieee80211_rx_status *status;
	struct ieee80211_channel *ch;
	struct ieee80211_hdr hdr = (struct ieee80211_hdr )info->skb->data;

	status = IEEE80211_SKB_RXCB(info->skb);
	memset(status, 0, sizeof(*status));

	if (info->encrypt_type != HTT_RX_MPDU_ENCRYPT_NONE) {
	status->flag \|= RX_FLAG_DECRYPTED \| RX_FLAG_IV_STRIPPED \|
	RX_FLAG_MMIC_STRIPPED;
	hdr->frame_control = __cpu_to_le16(
	__le16_to_cpu(hdr->frame_control) &
	~IEEE80211_FCTL_PROTECTED);
	}

	if (info->status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
	status->flag \|= RX_FLAG_MMIC_ERROR;

	if (info->fcs_err)
	status->flag \|= RX_FLAG_FAILED_FCS_CRC;

	status->signal = info->signal;

	spin_lock_bh(&ar->data_lock);
	ch = ar->scan_channel;
	if (!ch)
	ch = ar->rx_channel;
	spin_unlock_bh(&ar->data_lock);

	if (!ch) {
	ath10k_warn("no channel configured; ignoring frame!\n");
	dev_kfree_skb_any(info->skb);
	return;
	}

	process_rx_rates(ar, info, ch->band, status);
	status->band = ch->band;
	status->freq = ch->center_freq;

	ath10k_dbg(ATH10K_DBG_DATA,
	"rx skb %p len %u %s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u\n",
	info->skb,
	info->skb->len,
	status->flag == 0 ? "legacy" : "",
	status->flag & RX_FLAG_HT ? "ht" : "",
	status->flag & RX_FLAG_VHT ? "vht" : "",
	status->flag & RX_FLAG_40MHZ ? "40" : "",
	status->flag & RX_FLAG_80MHZ ? "80" : "",
	status->flag & RX_FLAG_SHORT_GI ? "sgi " : "",
	status->rate_idx,
	status->vht_nss,
	status->freq,
	status->band);
	ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
	info->skb->data, info->skb->len);

	ieee80211_rx(ar->hw, info->skb);
	}

	struct ath10k_peer ath10k_peer_find(struct ath10k ar, int vdev_id,
	const u8 *addr)
	{
	struct ath10k_peer *peer;

	lockdep_assert_held(&ar->data_lock);

	list_for_each_entry(peer, &ar->peers, list) {
	if (peer->vdev_id != vdev_id)
	continue;
	if (memcmp(peer->addr, addr, ETH_ALEN))
	continue;

	return peer;
	}

	return NULL;
	}

	static struct ath10k_peer ath10k_peer_find_by_id(struct ath10k ar,
	int peer_id)
	{
	struct ath10k_peer *peer;

	lockdep_assert_held(&ar->data_lock);

	list_for_each_entry(peer, &ar->peers, list)
	if (test_bit(peer_id, peer->peer_ids))
	return peer;

	return NULL;
	}

	static int ath10k_wait_for_peer_common(struct ath10k *ar, int vdev_id,
	const u8 *addr, bool expect_mapped)
	{
	int ret;

	ret = wait_event_timeout(ar->peer_mapping_wq, ({
	bool mapped;

	spin_lock_bh(&ar->data_lock);
	mapped = !!ath10k_peer_find(ar, vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	mapped == expect_mapped;
	}), 3*HZ);

	if (ret <= 0)
	return -ETIMEDOUT;

	return 0;
	}

	int ath10k_wait_for_peer_created(struct ath10k ar, int vdev_id, const u8 addr)
	{
	return ath10k_wait_for_peer_common(ar, vdev_id, addr, true);
	}

	int ath10k_wait_for_peer_deleted(struct ath10k ar, int vdev_id, const u8 addr)
	{
	return ath10k_wait_for_peer_common(ar, vdev_id, addr, false);
	}

	void ath10k_peer_map_event(struct ath10k_htt *htt,
	struct htt_peer_map_event *ev)
	{
	struct ath10k *ar = htt->ar;
	struct ath10k_peer *peer;

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, ev->vdev_id, ev->addr);
	if (!peer) {
	peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
	if (!peer)
	goto exit;

	peer->vdev_id = ev->vdev_id;
	memcpy(peer->addr, ev->addr, ETH_ALEN);
	list_add(&peer->list, &ar->peers);
	wake_up(&ar->peer_mapping_wq);
	}

	ath10k_dbg(ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
	ev->vdev_id, ev->addr, ev->peer_id);

	set_bit(ev->peer_id, peer->peer_ids);
	exit:
	spin_unlock_bh(&ar->data_lock);
	}

	void ath10k_peer_unmap_event(struct ath10k_htt *htt,
	struct htt_peer_unmap_event *ev)
	{
	struct ath10k *ar = htt->ar;
	struct ath10k_peer *peer;

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find_by_id(ar, ev->peer_id);
	if (!peer) {
	ath10k_warn("unknown peer id %d\n", ev->peer_id);
	goto exit;
	}

	ath10k_dbg(ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
	peer->vdev_id, peer->addr, ev->peer_id);

	clear_bit(ev->peer_id, peer->peer_ids);

	if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
	list_del(&peer->list);
	kfree(peer);
	wake_up(&ar->peer_mapping_wq);
	}

	exit:
	spin_unlock_bh(&ar->data_lock);
	}