// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
 */

#include <linux/vmalloc.h>

#include "core.h"
#include "peer.h"
#include "debug.h"

void
ath11k_accumulate_per_peer_tx_stats(struct ath11k_sta *arsta,
				    struct ath11k_per_peer_tx_stats *peer_stats,
				    u8 legacy_rate_idx)
{
	struct rate_info *txrate = &arsta->txrate;
	struct ath11k_htt_tx_stats *tx_stats;
	int gi, mcs, bw, nss;

	if (!arsta->tx_stats)
		return;

	tx_stats = arsta->tx_stats;
	gi = FIELD_GET(RATE_INFO_FLAGS_SHORT_GI, arsta->txrate.flags);
	mcs = txrate->mcs;
	bw = ath11k_mac_mac80211_bw_to_ath11k_bw(txrate->bw);
	nss = txrate->nss - 1;

#define STATS_OP_FMT(name) tx_stats->stats[ATH11K_STATS_TYPE_##name]

	if (txrate->flags & RATE_INFO_FLAGS_HE_MCS) {
		STATS_OP_FMT(SUCC).he[0][mcs] += peer_stats->succ_bytes;
		STATS_OP_FMT(SUCC).he[1][mcs] += peer_stats->succ_pkts;
		STATS_OP_FMT(FAIL).he[0][mcs] += peer_stats->failed_bytes;
		STATS_OP_FMT(FAIL).he[1][mcs] += peer_stats->failed_pkts;
		STATS_OP_FMT(RETRY).he[0][mcs] += peer_stats->retry_bytes;
		STATS_OP_FMT(RETRY).he[1][mcs] += peer_stats->retry_pkts;
	} else if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
		STATS_OP_FMT(SUCC).vht[0][mcs] += peer_stats->succ_bytes;
		STATS_OP_FMT(SUCC).vht[1][mcs] += peer_stats->succ_pkts;
		STATS_OP_FMT(FAIL).vht[0][mcs] += peer_stats->failed_bytes;
		STATS_OP_FMT(FAIL).vht[1][mcs] += peer_stats->failed_pkts;
		STATS_OP_FMT(RETRY).vht[0][mcs] += peer_stats->retry_bytes;
		STATS_OP_FMT(RETRY).vht[1][mcs] += peer_stats->retry_pkts;
	} else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
		STATS_OP_FMT(SUCC).ht[0][mcs] += peer_stats->succ_bytes;
		STATS_OP_FMT(SUCC).ht[1][mcs] += peer_stats->succ_pkts;
		STATS_OP_FMT(FAIL).ht[0][mcs] += peer_stats->failed_bytes;
		STATS_OP_FMT(FAIL).ht[1][mcs] += peer_stats->failed_pkts;
		STATS_OP_FMT(RETRY).ht[0][mcs] += peer_stats->retry_bytes;
		STATS_OP_FMT(RETRY).ht[1][mcs] += peer_stats->retry_pkts;
	} else {
		mcs = legacy_rate_idx;

		STATS_OP_FMT(SUCC).legacy[0][mcs] += peer_stats->succ_bytes;
		STATS_OP_FMT(SUCC).legacy[1][mcs] += peer_stats->succ_pkts;
		STATS_OP_FMT(FAIL).legacy[0][mcs] += peer_stats->failed_bytes;
		STATS_OP_FMT(FAIL).legacy[1][mcs] += peer_stats->failed_pkts;
		STATS_OP_FMT(RETRY).legacy[0][mcs] += peer_stats->retry_bytes;
		STATS_OP_FMT(RETRY).legacy[1][mcs] += peer_stats->retry_pkts;
	}

	if (peer_stats->is_ampdu) {
		tx_stats->ba_fails += peer_stats->ba_fails;

		if (txrate->flags & RATE_INFO_FLAGS_HE_MCS) {
			STATS_OP_FMT(AMPDU).he[0][mcs] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
			STATS_OP_FMT(AMPDU).he[1][mcs] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
		} else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
			STATS_OP_FMT(AMPDU).ht[0][mcs] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
			STATS_OP_FMT(AMPDU).ht[1][mcs] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
		} else {
			STATS_OP_FMT(AMPDU).vht[0][mcs] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
			STATS_OP_FMT(AMPDU).vht[1][mcs] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
		}
		STATS_OP_FMT(AMPDU).bw[0][bw] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
		STATS_OP_FMT(AMPDU).nss[0][nss] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
		STATS_OP_FMT(AMPDU).gi[0][gi] +=
			peer_stats->succ_bytes + peer_stats->retry_bytes;
		STATS_OP_FMT(AMPDU).bw[1][bw] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
		STATS_OP_FMT(AMPDU).nss[1][nss] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
		STATS_OP_FMT(AMPDU).gi[1][gi] +=
			peer_stats->succ_pkts + peer_stats->retry_pkts;
	} else {
		tx_stats->ack_fails += peer_stats->ba_fails;
	}

	STATS_OP_FMT(SUCC).bw[0][bw] += peer_stats->succ_bytes;
	STATS_OP_FMT(SUCC).nss[0][nss] += peer_stats->succ_bytes;
	STATS_OP_FMT(SUCC).gi[0][gi] += peer_stats->succ_bytes;

	STATS_OP_FMT(SUCC).bw[1][bw] += peer_stats->succ_pkts;
	STATS_OP_FMT(SUCC).nss[1][nss] += peer_stats->succ_pkts;
	STATS_OP_FMT(SUCC).gi[1][gi] += peer_stats->succ_pkts;

	STATS_OP_FMT(FAIL).bw[0][bw] += peer_stats->failed_bytes;
	STATS_OP_FMT(FAIL).nss[0][nss] += peer_stats->failed_bytes;
	STATS_OP_FMT(FAIL).gi[0][gi] += peer_stats->failed_bytes;

	STATS_OP_FMT(FAIL).bw[1][bw] += peer_stats->failed_pkts;
	STATS_OP_FMT(FAIL).nss[1][nss] += peer_stats->failed_pkts;
	STATS_OP_FMT(FAIL).gi[1][gi] += peer_stats->failed_pkts;

	STATS_OP_FMT(RETRY).bw[0][bw] += peer_stats->retry_bytes;
	STATS_OP_FMT(RETRY).nss[0][nss] += peer_stats->retry_bytes;
	STATS_OP_FMT(RETRY).gi[0][gi] += peer_stats->retry_bytes;

	STATS_OP_FMT(RETRY).bw[1][bw] += peer_stats->retry_pkts;
	STATS_OP_FMT(RETRY).nss[1][nss] += peer_stats->retry_pkts;
	STATS_OP_FMT(RETRY).gi[1][gi] += peer_stats->retry_pkts;

	tx_stats->tx_duration += peer_stats->duration;
}

void ath11k_update_per_peer_stats_from_txcompl(struct ath11k *ar,
					       struct sk_buff *msdu,
					       struct hal_tx_status *ts)
{
	struct ath11k_base *ab = ar->ab;
	struct ath11k_per_peer_tx_stats *peer_stats = &ar->cached_stats;
	enum hal_tx_rate_stats_pkt_type pkt_type;
	enum hal_tx_rate_stats_sgi sgi;
	enum hal_tx_rate_stats_bw bw;
	struct ath11k_peer *peer;
	struct ath11k_sta *arsta;
	struct ieee80211_sta *sta;
	u16 rate;
	u8 rate_idx = 0;
	int ret;
	u8 mcs;

	rcu_read_lock();
	spin_lock_bh(&ab->base_lock);
	peer = ath11k_peer_find_by_id(ab, ts->peer_id);
	if (!peer || !peer->sta) {
		ath11k_warn(ab, "failed to find the peer\n");
		spin_unlock_bh(&ab->base_lock);
		rcu_read_unlock();
		return;
	}

	sta = peer->sta;
	arsta = (struct ath11k_sta *)sta->drv_priv;

	memset(&arsta->txrate, 0, sizeof(arsta->txrate));
	pkt_type = FIELD_GET(HAL_TX_RATE_STATS_INFO0_PKT_TYPE,
			     ts->rate_stats);
	mcs = FIELD_GET(HAL_TX_RATE_STATS_INFO0_MCS,
			ts->rate_stats);
	sgi = FIELD_GET(HAL_TX_RATE_STATS_INFO0_SGI,
			ts->rate_stats);
	bw = FIELD_GET(HAL_TX_RATE_STATS_INFO0_BW, ts->rate_stats);

	if (pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11A ||
	    pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11B) {
		ret = ath11k_mac_hw_ratecode_to_legacy_rate(mcs,
							    pkt_type,
							    &rate_idx,
							    &rate);
		if (ret < 0)
			goto err_out;
		arsta->txrate.legacy = rate;
	} else if (pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11N) {
		if (mcs > 7) {
			ath11k_warn(ab, "Invalid HT mcs index %d\n", mcs);
			goto err_out;
		}

		arsta->txrate.mcs = mcs + 8 * (arsta->last_txrate.nss - 1);
		arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
		if (sgi)
			arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
	} else if (pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11AC) {
		if (mcs > 9) {
			ath11k_warn(ab, "Invalid VHT mcs index %d\n", mcs);
			goto err_out;
		}

		arsta->txrate.mcs = mcs;
		arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
		if (sgi)
			arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
	} else if (pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11AX) {
		/* TODO */
	}

	arsta->txrate.nss = arsta->last_txrate.nss;
	arsta->txrate.bw = ath11k_mac_bw_to_mac80211_bw(bw);

	ath11k_accumulate_per_peer_tx_stats(arsta, peer_stats, rate_idx);
err_out:
	spin_unlock_bh(&ab->base_lock);
	rcu_read_unlock();
}

static ssize_t ath11k_dbg_sta_dump_tx_stats(struct file *file,
					    char __user *user_buf,
					    size_t count, loff_t *ppos)
{
	struct ieee80211_sta *sta = file->private_data;
	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
	struct ath11k *ar = arsta->arvif->ar;
	struct ath11k_htt_data_stats *stats;
	static const char *str_name[ATH11K_STATS_TYPE_MAX] = {"succ", "fail",
							      "retry", "ampdu"};
	static const char *str[ATH11K_COUNTER_TYPE_MAX] = {"bytes", "packets"};
	int len = 0, i, j, k, retval = 0;
	const int size = 2 * 4096;
	char *buf;

	if (!arsta->tx_stats)
		return -ENOENT;

	buf = kzalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	for (k = 0; k < ATH11K_STATS_TYPE_MAX; k++) {
		for (j = 0; j < ATH11K_COUNTER_TYPE_MAX; j++) {
			stats = &arsta->tx_stats->stats[k];
			len += scnprintf(buf + len, size - len, "%s_%s\n",
					 str_name[k],
					 str[j]);
			len += scnprintf(buf + len, size - len,
					 " HE MCS %s\n",
					 str[j]);
			for (i = 0; i < ATH11K_HE_MCS_NUM; i++)
				len += scnprintf(buf + len, size - len,
						 "  %llu ",
						 stats->he[j][i]);
			len += scnprintf(buf + len, size - len, "\n");
			len += scnprintf(buf + len, size - len,
					 " VHT MCS %s\n",
					 str[j]);
			for (i = 0; i < ATH11K_VHT_MCS_NUM; i++)
				len += scnprintf(buf + len, size - len,
						 "  %llu ",
						 stats->vht[j][i]);
			len += scnprintf(buf + len, size - len, "\n");
			len += scnprintf(buf + len, size - len, " HT MCS %s\n",
					 str[j]);
			for (i = 0; i < ATH11K_HT_MCS_NUM; i++)
				len += scnprintf(buf + len, size - len,
						 "  %llu ", stats->ht[j][i]);
			len += scnprintf(buf + len, size - len, "\n");
			len += scnprintf(buf + len, size - len,
					" BW %s (20,40,80,160 MHz)\n", str[j]);
			len += scnprintf(buf + len, size - len,
					 "  %llu %llu %llu %llu\n",
					 stats->bw[j][0], stats->bw[j][1],
					 stats->bw[j][2], stats->bw[j][3]);
			len += scnprintf(buf + len, size - len,
					 " NSS %s (1x1,2x2,3x3,4x4)\n", str[j]);
			len += scnprintf(buf + len, size - len,
					 "  %llu %llu %llu %llu\n",
					 stats->nss[j][0], stats->nss[j][1],
					 stats->nss[j][2], stats->nss[j][3]);
			len += scnprintf(buf + len, size - len,
					 " GI %s (0.4us,0.8us,1.6us,3.2us)\n",
					 str[j]);
			len += scnprintf(buf + len, size - len,
					 "  %llu %llu %llu %llu\n",
					 stats->gi[j][0], stats->gi[j][1],
					 stats->gi[j][2], stats->gi[j][3]);
			len += scnprintf(buf + len, size - len,
					 " legacy rate %s (1,2 ... Mbps)\n  ",
					 str[j]);
			for (i = 0; i < ATH11K_LEGACY_NUM; i++)
				len += scnprintf(buf + len, size - len, "%llu ",
						 stats->legacy[j][i]);
			len += scnprintf(buf + len, size - len, "\n");
		}
	}

	len += scnprintf(buf + len, size - len,
			 "\nTX duration\n %llu usecs\n",
			 arsta->tx_stats->tx_duration);
	len += scnprintf(buf + len, size - len,
			"BA fails\n %llu\n", arsta->tx_stats->ba_fails);
	len += scnprintf(buf + len, size - len,
			"ack fails\n %llu\n", arsta->tx_stats->ack_fails);
	spin_unlock_bh(&ar->data_lock);

	if (len > size)
		len = size;
	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	mutex_unlock(&ar->conf_mutex);
	return retval;
}

static const struct file_operations fops_tx_stats = {
	.read = ath11k_dbg_sta_dump_tx_stats,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

static ssize_t ath11k_dbg_sta_dump_rx_stats(struct file *file,
					    char __user *user_buf,
					    size_t count, loff_t *ppos)
{
	struct ieee80211_sta *sta = file->private_data;
	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
	struct ath11k *ar = arsta->arvif->ar;
	struct ath11k_rx_peer_stats *rx_stats = arsta->rx_stats;
	int len = 0, i, retval = 0;
	const int size = 4096;
	char *buf;

	if (!rx_stats)
		return -ENOENT;

	buf = kzalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	mutex_lock(&ar->conf_mutex);
	spin_lock_bh(&ar->ab->base_lock);

	len += scnprintf(buf + len, size - len, "RX peer stats:\n");
	len += scnprintf(buf + len, size - len, "Num of MSDUs: %llu\n",
			 rx_stats->num_msdu);
	len += scnprintf(buf + len, size - len, "Num of MSDUs with TCP L4: %llu\n",
			 rx_stats->tcp_msdu_count);
	len += scnprintf(buf + len, size - len, "Num of MSDUs with UDP L4: %llu\n",
			 rx_stats->udp_msdu_count);
	len += scnprintf(buf + len, size - len, "Num of MSDUs part of AMPDU: %llu\n",
			 rx_stats->ampdu_msdu_count);
	len += scnprintf(buf + len, size - len, "Num of MSDUs not part of AMPDU: %llu\n",
			 rx_stats->non_ampdu_msdu_count);
	len += scnprintf(buf + len, size - len, "Num of MSDUs using STBC: %llu\n",
			 rx_stats->stbc_count);
	len += scnprintf(buf + len, size - len, "Num of MSDUs beamformed: %llu\n",
			 rx_stats->beamformed_count);
	len += scnprintf(buf + len, size - len, "Num of MPDUs with FCS ok: %llu\n",
			 rx_stats->num_mpdu_fcs_ok);
	len += scnprintf(buf + len, size - len, "Num of MPDUs with FCS error: %llu\n",
			 rx_stats->num_mpdu_fcs_err);
	len += scnprintf(buf + len, size - len,
			 "GI: 0.8us %llu 0.4us %llu 1.6us %llu 3.2us %llu\n",
			 rx_stats->gi_count[0], rx_stats->gi_count[1],
			 rx_stats->gi_count[2], rx_stats->gi_count[3]);
	len += scnprintf(buf + len, size - len,
			 "BW: 20Mhz %llu 40Mhz %llu 80Mhz %llu 160Mhz %llu\n",
			 rx_stats->bw_count[0], rx_stats->bw_count[1],
			 rx_stats->bw_count[2], rx_stats->bw_count[3]);
	len += scnprintf(buf + len, size - len, "BCC %llu LDPC %llu\n",
			 rx_stats->coding_count[0], rx_stats->coding_count[1]);
	len += scnprintf(buf + len, size - len,
			 "preamble: 11A %llu 11B %llu 11N %llu 11AC %llu 11AX %llu\n",
			 rx_stats->pream_cnt[0], rx_stats->pream_cnt[1],
			 rx_stats->pream_cnt[2], rx_stats->pream_cnt[3],
			 rx_stats->pream_cnt[4]);
	len += scnprintf(buf + len, size - len,
			 "reception type: SU %llu MU_MIMO %llu MU_OFDMA %llu MU_OFDMA_MIMO %llu\n",
			 rx_stats->reception_type[0], rx_stats->reception_type[1],
			 rx_stats->reception_type[2], rx_stats->reception_type[3]);
	len += scnprintf(buf + len, size - len, "TID(0-15) Legacy TID(16):");
	for (i = 0; i <= IEEE80211_NUM_TIDS; i++)
		len += scnprintf(buf + len, size - len, "%llu ", rx_stats->tid_count[i]);
	len += scnprintf(buf + len, size - len, "\nMCS(0-11) Legacy MCS(12):");
	for (i = 0; i < HAL_RX_MAX_MCS + 1; i++)
		len += scnprintf(buf + len, size - len, "%llu ", rx_stats->mcs_count[i]);
	len += scnprintf(buf + len, size - len, "\nNSS(1-8):");
	for (i = 0; i < HAL_RX_MAX_NSS; i++)
		len += scnprintf(buf + len, size - len, "%llu ", rx_stats->nss_count[i]);
	len += scnprintf(buf + len, size - len, "\nRX Duration:%llu ",
			 rx_stats->rx_duration);
	len += scnprintf(buf + len, size - len,
			 "\nDCM: %llu\nRU: 26 %llu 52: %llu 106: %llu 242: %llu 484: %llu 996: %llu\n",
			 rx_stats->dcm_count, rx_stats->ru_alloc_cnt[0],
			 rx_stats->ru_alloc_cnt[1], rx_stats->ru_alloc_cnt[2],
			 rx_stats->ru_alloc_cnt[3], rx_stats->ru_alloc_cnt[4],
			 rx_stats->ru_alloc_cnt[5]);

	len += scnprintf(buf + len, size - len, "\n");

	spin_unlock_bh(&ar->ab->base_lock);

	if (len > size)
		len = size;
	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	mutex_unlock(&ar->conf_mutex);
	return retval;
}

static const struct file_operations fops_rx_stats = {
	.read = ath11k_dbg_sta_dump_rx_stats,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

static int
ath11k_dbg_sta_open_htt_peer_stats(struct inode *inode, struct file *file)
{
	struct ieee80211_sta *sta = inode->i_private;
	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
	struct ath11k *ar = arsta->arvif->ar;
	struct debug_htt_stats_req *stats_req;
	int ret;

	stats_req = vzalloc(sizeof(*stats_req) + ATH11K_HTT_STATS_BUF_SIZE);
	if (!stats_req)
		return -ENOMEM;

	mutex_lock(&ar->conf_mutex);
	ar->debug.htt_stats.stats_req = stats_req;
	stats_req->type = ATH11K_DBG_HTT_EXT_STATS_PEER_INFO;
	memcpy(stats_req->peer_addr, sta->addr, ETH_ALEN);
	ret = ath11k_dbg_htt_stats_req(ar);
	mutex_unlock(&ar->conf_mutex);
	if (ret < 0)
		goto out;

	file->private_data = stats_req;
	return 0;
out:
	vfree(stats_req);
	return ret;
}

static int
ath11k_dbg_sta_release_htt_peer_stats(struct inode *inode, struct file *file)
{
	vfree(file->private_data);
	return 0;
}

static ssize_t ath11k_dbg_sta_read_htt_peer_stats(struct file *file,
						  char __user *user_buf,
						  size_t count, loff_t *ppos)
{
	struct debug_htt_stats_req *stats_req = file->private_data;
	char *buf;
	u32 length = 0;

	buf = stats_req->buf;
	length = min_t(u32, stats_req->buf_len, ATH11K_HTT_STATS_BUF_SIZE);
	return simple_read_from_buffer(user_buf, count, ppos, buf, length);
}

static const struct file_operations fops_htt_peer_stats = {
	.open = ath11k_dbg_sta_open_htt_peer_stats,
	.release = ath11k_dbg_sta_release_htt_peer_stats,
	.read = ath11k_dbg_sta_read_htt_peer_stats,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

static ssize_t ath11k_dbg_sta_write_peer_pktlog(struct file *file,
						const char __user *buf,
						size_t count, loff_t *ppos)
{
	struct ieee80211_sta *sta = file->private_data;
	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
	struct ath11k *ar = arsta->arvif->ar;
	int ret, enable;

	mutex_lock(&ar->conf_mutex);

	if (ar->state != ATH11K_STATE_ON) {
		ret = -ENETDOWN;
		goto out;
	}

	ret = kstrtoint_from_user(buf, count, 0, &enable);
	if (ret)
		goto out;

	ar->debug.pktlog_peer_valid = enable;
	memcpy(ar->debug.pktlog_peer_addr, sta->addr, ETH_ALEN);

	/* Send peer based pktlog enable/disable */
	ret = ath11k_wmi_pdev_peer_pktlog_filter(ar, sta->addr, enable);
	if (ret) {
		ath11k_warn(ar->ab, "failed to set peer pktlog filter %pM: %d\n",
			    sta->addr, ret);
		goto out;
	}

	ath11k_dbg(ar->ab, ATH11K_DBG_WMI, "peer pktlog filter set to %d\n",
		   enable);
	ret = count;

out:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static ssize_t ath11k_dbg_sta_read_peer_pktlog(struct file *file,
					       char __user *ubuf,
					       size_t count, loff_t *ppos)
{
	struct ieee80211_sta *sta = file->private_data;
	struct ath11k_sta *arsta = (struct ath11k_sta *)sta->drv_priv;
	struct ath11k *ar = arsta->arvif->ar;
	char buf[32] = {0};
	int len;

	mutex_lock(&ar->conf_mutex);
	len = scnprintf(buf, sizeof(buf), "%08x %pM\n",
			ar->debug.pktlog_peer_valid,
			ar->debug.pktlog_peer_addr);
	mutex_unlock(&ar->conf_mutex);

	return simple_read_from_buffer(ubuf, count, ppos, buf, len);
}

static const struct file_operations fops_peer_pktlog = {
	.write = ath11k_dbg_sta_write_peer_pktlog,
	.read = ath11k_dbg_sta_read_peer_pktlog,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

void ath11k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta, struct dentry *dir)
{
	struct ath11k *ar = hw->priv;

	if (ath11k_debug_is_extd_tx_stats_enabled(ar))
		debugfs_create_file("tx_stats", 0400, dir, sta,
				    &fops_tx_stats);
	if (ath11k_debug_is_extd_rx_stats_enabled(ar))
		debugfs_create_file("rx_stats", 0400, dir, sta,
				    &fops_rx_stats);

	debugfs_create_file("htt_peer_stats", 0400, dir, sta,
			    &fops_htt_peer_stats);

	debugfs_create_file("peer_pktlog", 0644, dir, sta,
			    &fops_peer_pktlog);
}
