[linux-2.6-block.git] / net / mac80211 / debugfs_sta.c

/*
 * Copyright 2003-2005	Devicescape Software, Inc.
 * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz>
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 * Copyright(c) 2016 Intel Deutschland GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include "ieee80211_i.h"
#include "debugfs.h"
#include "debugfs_sta.h"
#include "sta_info.h"
#include "driver-ops.h"

/* sta attributtes */

#define STA_READ(name, field, format_string)				\
static ssize_t sta_ ##name## _read(struct file *file,			\
				   char __user *userbuf,		\
				   size_t count, loff_t *ppos)		\
{									\
	struct sta_info *sta = file->private_data;			\
	return mac80211_format_buffer(userbuf, count, ppos, 		\
				      format_string, sta->field);	\
}
#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")

#define STA_OPS(name)							\
static const struct file_operations sta_ ##name## _ops = {		\
	.read = sta_##name##_read,					\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
}

#define STA_OPS_RW(name)						\
static const struct file_operations sta_ ##name## _ops = {		\
	.read = sta_##name##_read,					\
	.write = sta_##name##_write,					\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
}

#define STA_FILE(name, field, format)					\
		STA_READ_##format(name, field)				\
		STA_OPS(name)

STA_FILE(aid, sta.aid, D);

static const char * const sta_flag_names[] = {
#define FLAG(F) [WLAN_STA_##F] = #F
	FLAG(AUTH),
	FLAG(ASSOC),
	FLAG(PS_STA),
	FLAG(AUTHORIZED),
	FLAG(SHORT_PREAMBLE),
	FLAG(WDS),
	FLAG(CLEAR_PS_FILT),
	FLAG(MFP),
	FLAG(BLOCK_BA),
	FLAG(PS_DRIVER),
	FLAG(PSPOLL),
	FLAG(TDLS_PEER),
	FLAG(TDLS_PEER_AUTH),
	FLAG(TDLS_INITIATOR),
	FLAG(TDLS_CHAN_SWITCH),
	FLAG(TDLS_OFF_CHANNEL),
	FLAG(TDLS_WIDER_BW),
	FLAG(UAPSD),
	FLAG(SP),
	FLAG(4ADDR_EVENT),
	FLAG(INSERTED),
	FLAG(RATE_CONTROL),
	FLAG(TOFFSET_KNOWN),
	FLAG(MPSP_OWNER),
	FLAG(MPSP_RECIPIENT),
	FLAG(PS_DELIVER),
#undef FLAG
};

static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
			      size_t count, loff_t *ppos)
{
	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
	char *end = buf + sizeof(buf) - 1;
	struct sta_info *sta = file->private_data;
	unsigned int flg;

	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);

	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
		if (test_sta_flag(sta, flg))
			pos += scnprintf(pos, end - pos, "%s\n",
					 sta_flag_names[flg]);
	}

	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
}
STA_OPS(flags);

static ssize_t sta_num_ps_buf_frames_read(struct file *file,
					  char __user *userbuf,
					  size_t count, loff_t *ppos)
{
	struct sta_info *sta = file->private_data;
	char buf[17*IEEE80211_NUM_ACS], *p = buf;
	int ac;

	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
		p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
			       skb_queue_len(&sta->ps_tx_buf[ac]) +
			       skb_queue_len(&sta->tx_filtered[ac]));
	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(num_ps_buf_frames);

static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
				      size_t count, loff_t *ppos)
{
	char buf[15*IEEE80211_NUM_TIDS], *p = buf;
	int i;
	struct sta_info *sta = file->private_data;
	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
		p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
			       le16_to_cpu(sta->last_seq_ctrl[i]));
	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(last_seq_ctrl);

#define AQM_TXQ_ENTRY_LEN 130

static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
			size_t count, loff_t *ppos)
{
	struct sta_info *sta = file->private_data;
	struct ieee80211_local *local = sta->local;
	size_t bufsz = AQM_TXQ_ENTRY_LEN*(IEEE80211_NUM_TIDS+1);
	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
	struct txq_info *txqi;
	ssize_t rv;
	int i;

	if (!buf)
		return -ENOMEM;

	spin_lock_bh(&local->fq.lock);
	rcu_read_lock();

	p += scnprintf(p,
		       bufsz+buf-p,
		       "target %uus interval %uus ecn %s\n",
		       codel_time_to_us(sta->cparams.target),
		       codel_time_to_us(sta->cparams.interval),
		       sta->cparams.ecn ? "yes" : "no");
	p += scnprintf(p,
		       bufsz+buf-p,
		       "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");

	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
		txqi = to_txq_info(sta->sta.txq[i]);
		p += scnprintf(p, bufsz+buf-p,
			       "%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n",
			       txqi->txq.tid,
			       txqi->txq.ac,
			       txqi->tin.backlog_bytes,
			       txqi->tin.backlog_packets,
			       txqi->tin.flows,
			       txqi->cstats.drop_count,
			       txqi->cstats.ecn_mark,
			       txqi->tin.overlimit,
			       txqi->tin.collisions,
			       txqi->tin.tx_bytes,
			       txqi->tin.tx_packets,
			       txqi->flags,
			       txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN",
			       txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "",
			       txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " NO-AMSDU" : "");
	}

	rcu_read_unlock();
	spin_unlock_bh(&local->fq.lock);

	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	kfree(buf);
	return rv;
}
STA_OPS(aqm);

static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
					size_t count, loff_t *ppos)
{
	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
	int i;
	struct sta_info *sta = file->private_data;
	struct tid_ampdu_rx *tid_rx;
	struct tid_ampdu_tx *tid_tx;

	rcu_read_lock();

	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
			sta->ampdu_mlme.dialog_token_allocator + 1);
	p += scnprintf(p, sizeof(buf) + buf - p,
		       "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");

	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
		bool tid_rx_valid;

		tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
		tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
		tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);

		p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
			       tid_rx_valid);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
			       tid_rx_valid ?
					sta->ampdu_mlme.tid_rx_token[i] : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
				tid_rx ? tid_rx->ssn : 0);

		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
				tid_tx ? tid_tx->dialog_token : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
				tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\n");
	}
	rcu_read_unlock();

	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}

static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
				    size_t count, loff_t *ppos)
{
	char _buf[25] = {}, *buf = _buf;
	struct sta_info *sta = file->private_data;
	bool start, tx;
	unsigned long tid;
	char *pos;
	int ret, timeout = 5000;

	if (count > sizeof(_buf))
		return -EINVAL;

	if (copy_from_user(buf, userbuf, count))
		return -EFAULT;

	buf[sizeof(_buf) - 1] = '\0';
	pos = buf;
	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;

	if (!strcmp(buf, "tx"))
		tx = true;
	else if (!strcmp(buf, "rx"))
		tx = false;
	else
		return -EINVAL;

	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;
	if (!strcmp(buf, "start")) {
		start = true;
		if (!tx)
			return -EINVAL;
	} else if (!strcmp(buf, "stop")) {
		start = false;
	} else {
		return -EINVAL;
	}

	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;
	if (sscanf(buf, "timeout=%d", &timeout) == 1) {
		buf = strsep(&pos, " ");
		if (!buf || !tx || !start)
			return -EINVAL;
	}

	ret = kstrtoul(buf, 0, &tid);
	if (ret || tid >= IEEE80211_NUM_TIDS)
		return -EINVAL;

	if (tx) {
		if (start)
			ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
							    timeout);
		else
			ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
	} else {
		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
					       3, true);
		ret = 0;
	}

	return ret ?: count;
}
STA_OPS_RW(agg_status);

static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
#define PRINT_HT_CAP(_cond, _str) \
	do { \
	if (_cond) \
			p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	} while (0)
	char buf[512], *p = buf;
	int i;
	struct sta_info *sta = file->private_data;
	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;

	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
			htc->ht_supported ? "" : "not ");
	if (htc->ht_supported) {
		p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);

		PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
		PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
		PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");

		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");

		PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
		PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
		PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
		PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");

		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");

		PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");

		PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
			     "3839 bytes");
		PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
			     "7935 bytes");

		/*
		 * For beacons and probe response this would mean the BSS
		 * does or does not allow the usage of DSSS/CCK HT40.
		 * Otherwise it means the STA does or does not use
		 * DSSS/CCK HT40.
		 */
		PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
		PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");

		/* BIT(13) is reserved */

		PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");

		PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");

		p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
				htc->ampdu_factor, htc->ampdu_density);
		p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");

		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
			p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
					htc->mcs.rx_mask[i]);
		p += scnprintf(p, sizeof(buf)+buf-p, "\n");

		/* If not set this is meaningless */
		if (le16_to_cpu(htc->mcs.rx_highest)) {
			p += scnprintf(p, sizeof(buf)+buf-p,
				       "MCS rx highest: %d Mbps\n",
				       le16_to_cpu(htc->mcs.rx_highest));
		}

		p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
				htc->mcs.tx_params);
	}

	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(ht_capa);

static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	char buf[512], *p = buf;
	struct sta_info *sta = file->private_data;
	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;

	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
			vhtc->vht_supported ? "" : "not ");
	if (vhtc->vht_supported) {
		p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",
			       vhtc->cap);
#define PFLAG(a, b)							\
		do {							\
			if (vhtc->cap & IEEE80211_VHT_CAP_ ## a)	\
				p += scnprintf(p, sizeof(buf) + buf - p, \
					       "\t\t%s\n", b);		\
		} while (0)

		switch (vhtc->cap & 0x3) {
		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\tMAX-MPDU-3895\n");
			break;
		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\tMAX-MPDU-7991\n");
			break;
		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\tMAX-MPDU-11454\n");
			break;
		default:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\tMAX-MPDU-UNKNOWN\n");
		}
		switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
		case 0:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\t80Mhz\n");
			break;
		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\t160Mhz\n");
			break;
		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\t80+80Mhz\n");
			break;
		default:
			p += scnprintf(p, sizeof(buf) + buf - p,
				       "\t\tUNKNOWN-MHZ: 0x%x\n",
				       (vhtc->cap >> 2) & 0x3);
		}
		PFLAG(RXLDPC, "RXLDPC");
		PFLAG(SHORT_GI_80, "SHORT-GI-80");
		PFLAG(SHORT_GI_160, "SHORT-GI-160");
		PFLAG(TXSTBC, "TXSTBC");
		p += scnprintf(p, sizeof(buf) + buf - p,
			       "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
		PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
		PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
		p += scnprintf(p, sizeof(buf) + buf - p,
			"\t\tBEAMFORMEE-STS: 0x%x\n",
			(vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
			IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
		p += scnprintf(p, sizeof(buf) + buf - p,
			"\t\tSOUNDING-DIMENSIONS: 0x%x\n",
			(vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
			>> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
		PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
		PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
		PFLAG(VHT_TXOP_PS, "TXOP-PS");
		PFLAG(HTC_VHT, "HTC-VHT");
		p += scnprintf(p, sizeof(buf) + buf - p,
			"\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
			(vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
		PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
		      "LINK-ADAPTATION-VHT-UNSOL-MFB");
		p += scnprintf(p, sizeof(buf) + buf - p,
			"\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
			(vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
		PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
		PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");

		p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
			       le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
		if (vhtc->vht_mcs.rx_highest)
			p += scnprintf(p, sizeof(buf)+buf-p,
				       "MCS RX highest: %d Mbps\n",
				       le16_to_cpu(vhtc->vht_mcs.rx_highest));
		p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
			       le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
		if (vhtc->vht_mcs.tx_highest)
			p += scnprintf(p, sizeof(buf)+buf-p,
				       "MCS TX highest: %d Mbps\n",
				       le16_to_cpu(vhtc->vht_mcs.tx_highest));
	}

	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(vht_capa);


#define DEBUGFS_ADD(name) \
	debugfs_create_file(#name, 0400, \
		sta->debugfs_dir, sta, &sta_ ##name## _ops);

#define DEBUGFS_ADD_COUNTER(name, field)				\
	if (sizeof(sta->field) == sizeof(u32))				\
		debugfs_create_u32(#name, 0400, sta->debugfs_dir,	\
			(u32 *) &sta->field);				\
	else								\
		debugfs_create_u64(#name, 0400, sta->debugfs_dir,	\
			(u64 *) &sta->field);

void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
	struct ieee80211_local *local = sta->local;
	struct ieee80211_sub_if_data *sdata = sta->sdata;
	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
	u8 mac[3*ETH_ALEN];

	if (!stations_dir)
		return;

	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);

	/*
	 * This might fail due to a race condition:
	 * When mac80211 unlinks a station, the debugfs entries
	 * remain, but it is already possible to link a new
	 * station with the same address which triggers adding
	 * it to debugfs; therefore, if the old station isn't
	 * destroyed quickly enough the old station's debugfs
	 * dir might still be around.
	 */
	sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
	if (!sta->debugfs_dir)
		return;

	DEBUGFS_ADD(flags);
	DEBUGFS_ADD(aid);
	DEBUGFS_ADD(num_ps_buf_frames);
	DEBUGFS_ADD(last_seq_ctrl);
	DEBUGFS_ADD(agg_status);
	DEBUGFS_ADD(ht_capa);
	DEBUGFS_ADD(vht_capa);

	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
	DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);

	if (local->ops->wake_tx_queue)
		DEBUGFS_ADD(aqm);

	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
		debugfs_create_x32("driver_buffered_tids", 0400,
				   sta->debugfs_dir,
				   (u32 *)&sta->driver_buffered_tids);
	else
		debugfs_create_x64("driver_buffered_tids", 0400,
				   sta->debugfs_dir,
				   (u64 *)&sta->driver_buffered_tids);

	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
}

void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
	debugfs_remove_recursive(sta->debugfs_dir);
	sta->debugfs_dir = NULL;
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* Copyright 2003-2005 Devicescape Software, Inc.
	3	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	4	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e	5	* Copyright 2013-2014 Intel Mobile Communications GmbH
1e0bbeba	6	* Copyright(c) 2016 Intel Deutschland GmbH
e9f207f0 JB	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/debugfs.h>
	14	#include <linux/ieee80211.h>
	15	#include "ieee80211_i.h"
	16	#include "debugfs.h"
	17	#include "debugfs_sta.h"
	18	#include "sta_info.h"
77d2ece6	19	#include "driver-ops.h"
e9f207f0 JB	20
	21	/* sta attributtes */
	22
07caf9d6	23	#define STA_READ(name, field, format_string) \
e9f207f0 JB	24	static ssize_t sta_ ##name## _read(struct file *file, \
	25	char __user *userbuf, \
	26	size_t count, loff_t *ppos) \
	27	{ \
e9f207f0	28	struct sta_info *sta = file->private_data; \
07caf9d6 EP	29	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	30	format_string, sta->field); \
e9f207f0	31	}
07caf9d6	32	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
e9f207f0	33
e9f207f0 JB	34	#define STA_OPS(name) \
	35	static const struct file_operations sta_ ##name## _ops = { \
	36	.read = sta_##name##_read, \
234e3405	37	.open = simple_open, \
2b18ab36	38	.llseek = generic_file_llseek, \
e9f207f0 JB	39	}
e9f207f0 JB	40
a75b4363 JB	41	#define STA_OPS_RW(name) \
	42	static const struct file_operations sta_ ##name## _ops = { \
	43	.read = sta_##name##_read, \
	44	.write = sta_##name##_write, \
234e3405	45	.open = simple_open, \
2b18ab36	46	.llseek = generic_file_llseek, \
a75b4363 JB	47	}
a75b4363 JB	48
e9f207f0 JB	49	#define STA_FILE(name, field, format) \
	50	STA_READ_##format(name, field) \
	51	STA_OPS(name)
	52
17741cdc	53	STA_FILE(aid, sta.aid, D);
e9f207f0	54
c84387d2 JB	55	static const char * const sta_flag_names[] = {
	56	#define FLAG(F) [WLAN_STA_##F] = #F
	57	FLAG(AUTH),
	58	FLAG(ASSOC),
	59	FLAG(PS_STA),
	60	FLAG(AUTHORIZED),
	61	FLAG(SHORT_PREAMBLE),
	62	FLAG(WDS),
	63	FLAG(CLEAR_PS_FILT),
	64	FLAG(MFP),
	65	FLAG(BLOCK_BA),
	66	FLAG(PS_DRIVER),
	67	FLAG(PSPOLL),
	68	FLAG(TDLS_PEER),
	69	FLAG(TDLS_PEER_AUTH),
	70	FLAG(TDLS_INITIATOR),
	71	FLAG(TDLS_CHAN_SWITCH),
	72	FLAG(TDLS_OFF_CHANNEL),
	73	FLAG(TDLS_WIDER_BW),
	74	FLAG(UAPSD),
	75	FLAG(SP),
	76	FLAG(4ADDR_EVENT),
	77	FLAG(INSERTED),
	78	FLAG(RATE_CONTROL),
	79	FLAG(TOFFSET_KNOWN),
	80	FLAG(MPSP_OWNER),
	81	FLAG(MPSP_RECIPIENT),
	82	FLAG(PS_DELIVER),
	83	#undef FLAG
	84	};
	85
e9f207f0 JB	86	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	87	size_t count, loff_t *ppos)
	88	{
c84387d2 JB	89	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
c84387d2 JB	90	char *end = buf + sizeof(buf) - 1;
e9f207f0	91	struct sta_info *sta = file->private_data;
c84387d2 JB	92	unsigned int flg;
	93
	94	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
c2c98fde	95
c84387d2 JB	96	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
	97	if (test_sta_flag(sta, flg))
	98	pos += scnprintf(pos, end - pos, "%s\n",
	99	sta_flag_names[flg]);
	100	}
5bade101	101
c84387d2	102	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
e9f207f0 JB	103	}
	104	STA_OPS(flags);
	105
	106	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	107	char __user *userbuf,
	108	size_t count, loff_t *ppos)
	109	{
e9f207f0	110	struct sta_info *sta = file->private_data;
948d887d JB	111	char buf[17IEEE80211_NUM_ACS], p = buf;
	112	int ac;
	113
	114	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	115	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	116	skb_queue_len(&sta->ps_tx_buf[ac]) +
	117	skb_queue_len(&sta->tx_filtered[ac]));
	118	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	119	}
	120	STA_OPS(num_ps_buf_frames);
	121
e9f207f0 JB	122	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	123	size_t count, loff_t *ppos)
	124	{
5a306f58	125	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	126	int i;
e9f207f0 JB	127	struct sta_info *sta = file->private_data;
5a306f58	128	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	129	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	130	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	131	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	132	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	133	}
	134	STA_OPS(last_seq_ctrl);
	135
8d51dbb8 THJ	136	#define AQM_TXQ_ENTRY_LEN 130
	137
	138	static ssize_t sta_aqm_read(struct file file, char __user userbuf,
	139	size_t count, loff_t *ppos)
	140	{
	141	struct sta_info *sta = file->private_data;
	142	struct ieee80211_local *local = sta->local;
	143	size_t bufsz = AQM_TXQ_ENTRY_LEN*(IEEE80211_NUM_TIDS+1);
	144	char buf = kzalloc(bufsz, GFP_KERNEL), p = buf;
	145	struct txq_info *txqi;
	146	ssize_t rv;
	147	int i;
	148
	149	if (!buf)
	150	return -ENOMEM;
	151
	152	spin_lock_bh(&local->fq.lock);
	153	rcu_read_lock();
	154
484a54c2 THJ	155	p += scnprintf(p,
	156	bufsz+buf-p,
	157	"target %uus interval %uus ecn %s\n",
	158	codel_time_to_us(sta->cparams.target),
	159	codel_time_to_us(sta->cparams.interval),
	160	sta->cparams.ecn ? "yes" : "no");
8d51dbb8 THJ	161	p += scnprintf(p,
8d51dbb8 THJ	162	bufsz+buf-p,
25b0ba7e	163	"tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
8d51dbb8 THJ	164
	165	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
	166	txqi = to_txq_info(sta->sta.txq[i]);
	167	p += scnprintf(p, bufsz+buf-p,
25b0ba7e	168	"%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n",
8d51dbb8 THJ	169	txqi->txq.tid,
	170	txqi->txq.ac,
	171	txqi->tin.backlog_bytes,
	172	txqi->tin.backlog_packets,
	173	txqi->tin.flows,
	174	txqi->cstats.drop_count,
	175	txqi->cstats.ecn_mark,
	176	txqi->tin.overlimit,
	177	txqi->tin.collisions,
	178	txqi->tin.tx_bytes,
25b0ba7e BG	179	txqi->tin.tx_packets,
	180	txqi->flags,
	181	txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN",
	182	txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "",
	183	txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " NO-AMSDU" : "");
8d51dbb8 THJ	184	}
	185
	186	rcu_read_unlock();
	187	spin_unlock_bh(&local->fq.lock);
	188
	189	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	190	kfree(buf);
	191	return rv;
	192	}
	193	STA_OPS(aqm);
	194
eb2ba62e RR	195	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	196	size_t count, loff_t *ppos)
	197	{
5a306f58	198	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	199	int i;
eb2ba62e RR	200	struct sta_info *sta = file->private_data;
dd318575 JB	201	struct tid_ampdu_rx *tid_rx;
	202	struct tid_ampdu_tx *tid_tx;
	203
	204	rcu_read_lock();
eb2ba62e	205
e0b20f1c	206	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	207	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	208	p += scnprintf(p, sizeof(buf) + buf - p,
14b058bb	209	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	210
5a306f58	211	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
b473b8f1 JB	212	bool tid_rx_valid;
b473b8f1 JB	213
dd318575 JB	214	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
dd318575 JB	215	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
b473b8f1	216	tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
dd318575	217
e0b20f1c	218	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
b473b8f1 JB	219	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
b473b8f1 JB	220	tid_rx_valid);
e0b20f1c	221	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
b473b8f1 JB	222	tid_rx_valid ?
b473b8f1 JB	223	sta->ampdu_mlme.tid_rx_token[i] : 0);
e0b20f1c	224	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	225	tid_rx ? tid_rx->ssn : 0);
386aa23d	226
dd318575	227	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	228	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	229	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	230	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	231	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	232	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	233	}
dd318575	234	rcu_read_unlock();
eb2ba62e RR	235
	236	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	237	}
a75b4363 JB	238
	239	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	240	size_t count, loff_t *ppos)
	241	{
1e0bbeba	242	char _buf[25] = {}, *buf = _buf;
a75b4363 JB	243	struct sta_info *sta = file->private_data;
	244	bool start, tx;
	245	unsigned long tid;
1e0bbeba SS	246	char *pos;
1e0bbeba SS	247	int ret, timeout = 5000;
a75b4363 JB	248
	249	if (count > sizeof(_buf))
	250	return -EINVAL;
	251
	252	if (copy_from_user(buf, userbuf, count))
	253	return -EFAULT;
	254
	255	buf[sizeof(_buf) - 1] = '\0';
1e0bbeba SS	256	pos = buf;
	257	buf = strsep(&pos, " ");
	258	if (!buf)
	259	return -EINVAL;
a75b4363	260
1e0bbeba	261	if (!strcmp(buf, "tx"))
a75b4363	262	tx = true;
1e0bbeba	263	else if (!strcmp(buf, "rx"))
a75b4363	264	tx = false;
1e0bbeba	265	else
a75b4363 JB	266	return -EINVAL;
a75b4363 JB	267
1e0bbeba SS	268	buf = strsep(&pos, " ");
	269	if (!buf)
	270	return -EINVAL;
	271	if (!strcmp(buf, "start")) {
a75b4363 JB	272	start = true;
	273	if (!tx)
	274	return -EINVAL;
1e0bbeba	275	} else if (!strcmp(buf, "stop")) {
a75b4363	276	start = false;
1e0bbeba	277	} else {
a75b4363	278	return -EINVAL;
1e0bbeba	279	}
a75b4363	280
1e0bbeba SS	281	buf = strsep(&pos, " ");
	282	if (!buf)
	283	return -EINVAL;
	284	if (sscanf(buf, "timeout=%d", &timeout) == 1) {
	285	buf = strsep(&pos, " ");
	286	if (!buf \|\| !tx \|\| !start)
	287	return -EINVAL;
	288	}
a75b4363	289
1e0bbeba SS	290	ret = kstrtoul(buf, 0, &tid);
1e0bbeba SS	291	if (ret \|\| tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	292	return -EINVAL;
	293
	294	if (tx) {
	295	if (start)
1e0bbeba SS	296	ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
1e0bbeba SS	297	timeout);
a75b4363	298	else
6a8579d0	299	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	300	} else {
53f73c09 JB	301	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	302	3, true);
a75b4363 JB	303	ret = 0;
	304	}
	305
	306	return ret ?: count;
	307	}
	308	STA_OPS_RW(agg_status);
eb2ba62e	309
64491f0e JB	310	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	311	size_t count, loff_t *ppos)
	312	{
7db94e21 LR	313	#define PRINT_HT_CAP(_cond, _str) \
	314	do { \
	315	if (_cond) \
	316	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	317	} while (0)
4c82bf8e	318	char buf[512], *p = buf;
64491f0e JB	319	int i;
	320	struct sta_info *sta = file->private_data;
	321	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	322
	323	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	324	htc->ht_supported ? "" : "not ");
	325	if (htc->ht_supported) {
cb136f54	326	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	327
c15cf5fc	328	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	329	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	330	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	331
	332	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	333	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	334	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	335
	336	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	337	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	338	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	339	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	340
	341	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	342	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	343	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	344	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	345
	346	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	347
7db94e21	348	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	349	"3839 bytes");
904603f9 BG	350	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	351	"7935 bytes");
	352
	353	/*
	354	* For beacons and probe response this would mean the BSS
	355	* does or does not allow the usage of DSSS/CCK HT40.
	356	* Otherwise it means the STA does or does not use
	357	* DSSS/CCK HT40.
	358	*/
	359	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	360	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	361
	362	/* BIT(13) is reserved */
	363
	364	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	365
	366	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	367
64491f0e JB	368	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	369	htc->ampdu_factor, htc->ampdu_density);
	370	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	371
64491f0e JB	372	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	373	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	374	htc->mcs.rx_mask[i]);
9da3e068 LR	375	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	376
	377	/* If not set this is meaningless */
	378	if (le16_to_cpu(htc->mcs.rx_highest)) {
	379	p += scnprintf(p, sizeof(buf)+buf-p,
	380	"MCS rx highest: %d Mbps\n",
	381	le16_to_cpu(htc->mcs.rx_highest));
	382	}
	383
64491f0e JB	384	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	385	htc->mcs.tx_params);
	386	}
	387
	388	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	389	}
	390	STA_OPS(ht_capa);
	391
90fcba65 JB	392	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	393	size_t count, loff_t *ppos)
	394	{
0bb7ed42	395	char buf[512], *p = buf;
90fcba65 JB	396	struct sta_info *sta = file->private_data;
	397	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	398
	399	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	400	vhtc->vht_supported ? "" : "not ");
	401	if (vhtc->vht_supported) {
0bb7ed42 BG	402	p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",
	403	vhtc->cap);
	404	#define PFLAG(a, b) \
	405	do { \
	406	if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
	407	p += scnprintf(p, sizeof(buf) + buf - p, \
	408	"\t\t%s\n", b); \
	409	} while (0)
	410
	411	switch (vhtc->cap & 0x3) {
	412	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
	413	p += scnprintf(p, sizeof(buf) + buf - p,
	414	"\t\tMAX-MPDU-3895\n");
	415	break;
	416	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
	417	p += scnprintf(p, sizeof(buf) + buf - p,
	418	"\t\tMAX-MPDU-7991\n");
	419	break;
	420	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
	421	p += scnprintf(p, sizeof(buf) + buf - p,
	422	"\t\tMAX-MPDU-11454\n");
	423	break;
	424	default:
	425	p += scnprintf(p, sizeof(buf) + buf - p,
	426	"\t\tMAX-MPDU-UNKNOWN\n");
9cb05f93	427	}
0bb7ed42 BG	428	switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
	429	case 0:
	430	p += scnprintf(p, sizeof(buf) + buf - p,
	431	"\t\t80Mhz\n");
	432	break;
	433	case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
	434	p += scnprintf(p, sizeof(buf) + buf - p,
	435	"\t\t160Mhz\n");
	436	break;
	437	case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
	438	p += scnprintf(p, sizeof(buf) + buf - p,
	439	"\t\t80+80Mhz\n");
	440	break;
	441	default:
	442	p += scnprintf(p, sizeof(buf) + buf - p,
	443	"\t\tUNKNOWN-MHZ: 0x%x\n",
	444	(vhtc->cap >> 2) & 0x3);
9cb05f93	445	}
0bb7ed42 BG	446	PFLAG(RXLDPC, "RXLDPC");
	447	PFLAG(SHORT_GI_80, "SHORT-GI-80");
	448	PFLAG(SHORT_GI_160, "SHORT-GI-160");
	449	PFLAG(TXSTBC, "TXSTBC");
	450	p += scnprintf(p, sizeof(buf) + buf - p,
	451	"\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
	452	PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
	453	PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
	454	p += scnprintf(p, sizeof(buf) + buf - p,
	455	"\t\tBEAMFORMEE-STS: 0x%x\n",
	456	(vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
	457	IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
	458	p += scnprintf(p, sizeof(buf) + buf - p,
	459	"\t\tSOUNDING-DIMENSIONS: 0x%x\n",
	460	(vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
	461	>> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
	462	PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
	463	PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
	464	PFLAG(VHT_TXOP_PS, "TXOP-PS");
	465	PFLAG(HTC_VHT, "HTC-VHT");
	466	p += scnprintf(p, sizeof(buf) + buf - p,
	467	"\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
	468	(vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
	469	IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
	470	PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
	471	"LINK-ADAPTATION-VHT-UNSOL-MFB");
	472	p += scnprintf(p, sizeof(buf) + buf - p,
	473	"\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
	474	(vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
	475	PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
	476	PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
90fcba65 JB	477
	478	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	479	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	480	if (vhtc->vht_mcs.rx_highest)
	481	p += scnprintf(p, sizeof(buf)+buf-p,
	482	"MCS RX highest: %d Mbps\n",
	483	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	484	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	485	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	486	if (vhtc->vht_mcs.tx_highest)
	487	p += scnprintf(p, sizeof(buf)+buf-p,
	488	"MCS TX highest: %d Mbps\n",
	489	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	490	}
	491
	492	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	493	}
	494	STA_OPS(vht_capa);
	495
1f2e651c	496
e9f207f0	497	#define DEBUGFS_ADD(name) \
7bcfaf2f	498	debugfs_create_file(#name, 0400, \
fc4a25c5	499	sta->debugfs_dir, sta, &sta_ ##name## _ops);
e9f207f0	500
2826bcd8 FF	501	#define DEBUGFS_ADD_COUNTER(name, field) \
2826bcd8 FF	502	if (sizeof(sta->field) == sizeof(u32)) \
fc4a25c5	503	debugfs_create_u32(#name, 0400, sta->debugfs_dir, \
2826bcd8 FF	504	(u32 *) &sta->field); \
2826bcd8 FF	505	else \
fc4a25c5	506	debugfs_create_u64(#name, 0400, sta->debugfs_dir, \
2826bcd8	507	(u64 *) &sta->field);
e9f207f0 JB	508
	509	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	510	{
77d2ece6 SM	511	struct ieee80211_local *local = sta->local;
77d2ece6 SM	512	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	513	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	514	u8 mac[3*ETH_ALEN];
e9f207f0 JB	515
	516	if (!stations_dir)
	517	return;
	518
0c68ae26	519	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	520
63044e9f JB	521	/*
	522	* This might fail due to a race condition:
	523	* When mac80211 unlinks a station, the debugfs entries
	524	* remain, but it is already possible to link a new
	525	* station with the same address which triggers adding
	526	* it to debugfs; therefore, if the old station isn't
	527	* destroyed quickly enough the old station's debugfs
	528	* dir might still be around.
	529	*/
fc4a25c5 JB	530	sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
fc4a25c5 JB	531	if (!sta->debugfs_dir)
e9f207f0 JB	532	return;
	533
	534	DEBUGFS_ADD(flags);
bddb2afc	535	DEBUGFS_ADD(aid);
e9f207f0	536	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	537	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	538	DEBUGFS_ADD(agg_status);
64491f0e	539	DEBUGFS_ADD(ht_capa);
90fcba65	540	DEBUGFS_ADD(vht_capa);
2826bcd8	541
e5a9f8d0 JB	542	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
	543	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
	544	DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);
77d2ece6	545
8d51dbb8 THJ	546	if (local->ops->wake_tx_queue)
	547	DEBUGFS_ADD(aqm);
	548
7cf1f14e JB	549	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
7cf1f14e JB	550	debugfs_create_x32("driver_buffered_tids", 0400,
fc4a25c5	551	sta->debugfs_dir,
7cf1f14e JB	552	(u32 *)&sta->driver_buffered_tids);
	553	else
	554	debugfs_create_x64("driver_buffered_tids", 0400,
fc4a25c5	555	sta->debugfs_dir,
7cf1f14e JB	556	(u64 *)&sta->driver_buffered_tids);
7cf1f14e JB	557
fc4a25c5	558	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
e9f207f0 JB	559	}
	560
	561	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	562	{
fc4a25c5 JB	563	debugfs_remove_recursive(sta->debugfs_dir);
fc4a25c5 JB	564	sta->debugfs_dir = NULL;
e9f207f0	565	}