[GitHub/mt8127/android_kernel_alcatel_ttab.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>
 *
 * 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"

/* 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_READ_U(name, field) STA_READ(name, field, "%u\n")
#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")

#define STA_OPS(name)							\
static const struct file_operations sta_ ##name## _ops = {		\
	.read = sta_##name##_read,					\
	.open = mac80211_open_file_generic,				\
	.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 = mac80211_open_file_generic,				\
	.llseek = generic_file_llseek,					\
}

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

STA_FILE(aid, sta.aid, D);
STA_FILE(dev, sdata->name, S);
STA_FILE(last_signal, last_signal, D);

static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
			      size_t count, loff_t *ppos)
{
	char buf[121];
	struct sta_info *sta = file->private_data;

#define TEST(flg) \
	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""

	int res = scnprintf(buf, sizeof(buf),
			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
			    TEST(PS_DRIVER), TEST(AUTHORIZED),
			    TEST(SHORT_PREAMBLE), TEST(ASSOC_AP),
			    TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
			    TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
			    TEST(TDLS_PEER_AUTH));
#undef TEST
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
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_inactive_ms_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, "%d\n",
				      jiffies_to_msecs(jiffies - sta->last_rx));
}
STA_OPS(inactive_ms);


static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
					size_t count, loff_t *ppos)
{
	struct sta_info *sta = file->private_data;
	struct timespec uptime;
	struct tm result;
	long connected_time_secs;
	char buf[100];
	int res;
	do_posix_clock_monotonic_gettime(&uptime);
	connected_time_secs = uptime.tv_sec - sta->last_connected;
	time_to_tm(connected_time_secs, 0, &result);
	result.tm_year -= 70;
	result.tm_mday -= 1;
	res = scnprintf(buf, sizeof(buf),
		"years  - %ld\nmonths - %d\ndays   - %d\nclock  - %d:%d:%d\n\n",
			result.tm_year, result.tm_mon, result.tm_mday,
			result.tm_hour, result.tm_min, result.tm_sec);
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
STA_OPS(connected_time);


static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
				      size_t count, loff_t *ppos)
{
	char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
	int i;
	struct sta_info *sta = file->private_data;
	for (i = 0; i < NUM_RX_DATA_QUEUES; 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);

static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
					size_t count, loff_t *ppos)
{
	char buf[71 + STA_TID_NUM * 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 active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");

	for (i = 0; i < STA_TID_NUM; i++) {
		tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
		tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);

		p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
				tid_rx ? tid_rx->dialog_token : 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[12], *buf = _buf;
	struct sta_info *sta = file->private_data;
	bool start, tx;
	unsigned long tid;
	int ret;

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

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

	buf[sizeof(_buf) - 1] = '\0';

	if (strncmp(buf, "tx ", 3) == 0) {
		buf += 3;
		tx = true;
	} else if (strncmp(buf, "rx ", 3) == 0) {
		buf += 3;
		tx = false;
	} else
		return -EINVAL;

	if (strncmp(buf, "start ", 6) == 0) {
		buf += 6;
		start = true;
		if (!tx)
			return -EINVAL;
	} else if (strncmp(buf, "stop ", 5) == 0) {
		buf += 5;
		start = false;
	} else
		return -EINVAL;

	tid = simple_strtoul(buf, NULL, 0);

	if (tid >= STA_TID_NUM)
		return -EINVAL;

	if (tx) {
		if (start)
			ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
		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);

#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 dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
	u8 mac[3*ETH_ALEN];

	sta->debugfs.add_has_run = true;

	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(num_ps_buf_frames);
	DEBUGFS_ADD(inactive_ms);
	DEBUGFS_ADD(connected_time);
	DEBUGFS_ADD(last_seq_ctrl);
	DEBUGFS_ADD(agg_status);
	DEBUGFS_ADD(dev);
	DEBUGFS_ADD(last_signal);
	DEBUGFS_ADD(ht_capa);

	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
	DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
}

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>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/debugfs.h>
	12	#include <linux/ieee80211.h>
	13	#include "ieee80211_i.h"
	14	#include "debugfs.h"
	15	#include "debugfs_sta.h"
	16	#include "sta_info.h"
	17
	18	/* sta attributtes */
	19
07caf9d6	20	#define STA_READ(name, field, format_string) \
e9f207f0 JB	21	static ssize_t sta_ ##name## _read(struct file *file, \
	22	char __user *userbuf, \
	23	size_t count, loff_t *ppos) \
	24	{ \
e9f207f0	25	struct sta_info *sta = file->private_data; \
07caf9d6 EP	26	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	27	format_string, sta->field); \
e9f207f0	28	}
07caf9d6 EP	29	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
	30	#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
	31	#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
e9f207f0	32
e9f207f0 JB	33	#define STA_OPS(name) \
	34	static const struct file_operations sta_ ##name## _ops = { \
	35	.read = sta_##name##_read, \
	36	.open = mac80211_open_file_generic, \
2b18ab36	37	.llseek = generic_file_llseek, \
e9f207f0 JB	38	}
e9f207f0 JB	39
a75b4363 JB	40	#define STA_OPS_RW(name) \
	41	static const struct file_operations sta_ ##name## _ops = { \
	42	.read = sta_##name##_read, \
	43	.write = sta_##name##_write, \
	44	.open = mac80211_open_file_generic, \
2b18ab36	45	.llseek = generic_file_llseek, \
a75b4363 JB	46	}
a75b4363 JB	47
e9f207f0 JB	48	#define STA_FILE(name, field, format) \
	49	STA_READ_##format(name, field) \
	50	STA_OPS(name)
	51
17741cdc	52	STA_FILE(aid, sta.aid, D);
47846c9b	53	STA_FILE(dev, sdata->name, S);
e9f207f0	54	STA_FILE(last_signal, last_signal, D);
e9f207f0 JB	55
	56	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	57	size_t count, loff_t *ppos)
	58	{
5bade101	59	char buf[121];
e9f207f0	60	struct sta_info *sta = file->private_data;
c2c98fde	61
5bade101 JB	62	#define TEST(flg) \
	63	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	64
	65	int res = scnprintf(buf, sizeof(buf),
	66	"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
	67	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
	68	TEST(PS_DRIVER), TEST(AUTHORIZED),
	69	TEST(SHORT_PREAMBLE), TEST(ASSOC_AP),
	70	TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
	71	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
	72	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
	73	TEST(TDLS_PEER_AUTH));
	74	#undef TEST
e9f207f0 JB	75	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	76	}
	77	STA_OPS(flags);
	78
	79	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	80	char __user *userbuf,
	81	size_t count, loff_t *ppos)
	82	{
e9f207f0	83	struct sta_info *sta = file->private_data;
948d887d JB	84	char buf[17IEEE80211_NUM_ACS], p = buf;
	85	int ac;
	86
	87	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	88	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	89	skb_queue_len(&sta->ps_tx_buf[ac]) +
	90	skb_queue_len(&sta->tx_filtered[ac]));
	91	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	92	}
	93	STA_OPS(num_ps_buf_frames);
	94
e9f207f0 JB	95	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	96	size_t count, loff_t *ppos)
	97	{
e9f207f0	98	struct sta_info *sta = file->private_data;
07caf9d6 EP	99	return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
07caf9d6 EP	100	jiffies_to_msecs(jiffies - sta->last_rx));
e9f207f0 JB	101	}
	102	STA_OPS(inactive_ms);
	103
ebe27c91 MSS	104
	105	static ssize_t sta_connected_time_read(struct file file, char __user userbuf,
	106	size_t count, loff_t *ppos)
	107	{
	108	struct sta_info *sta = file->private_data;
	109	struct timespec uptime;
	110	struct tm result;
	111	long connected_time_secs;
	112	char buf[100];
	113	int res;
	114	do_posix_clock_monotonic_gettime(&uptime);
	115	connected_time_secs = uptime.tv_sec - sta->last_connected;
	116	time_to_tm(connected_time_secs, 0, &result);
	117	result.tm_year -= 70;
	118	result.tm_mday -= 1;
	119	res = scnprintf(buf, sizeof(buf),
7762bb02	120	"years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
ebe27c91 MSS	121	result.tm_year, result.tm_mon, result.tm_mday,
	122	result.tm_hour, result.tm_min, result.tm_sec);
	123	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	124	}
	125	STA_OPS(connected_time);
	126
	127
	128
e9f207f0 JB	129	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	130	size_t count, loff_t *ppos)
	131	{
	132	char buf[15NUM_RX_DATA_QUEUES], p = buf;
	133	int i;
	134	struct sta_info *sta = file->private_data;
	135	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
	136	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	137	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	138	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	139	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	140	}
	141	STA_OPS(last_seq_ctrl);
	142
eb2ba62e RR	143	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	144	size_t count, loff_t *ppos)
	145	{
098a6070	146	char buf[71 + STA_TID_NUM * 40], *p = buf;
eb2ba62e RR	147	int i;
eb2ba62e RR	148	struct sta_info *sta = file->private_data;
dd318575 JB	149	struct tid_ampdu_rx *tid_rx;
	150	struct tid_ampdu_tx *tid_tx;
	151
	152	rcu_read_lock();
eb2ba62e	153
e0b20f1c	154	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	155	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	156	p += scnprintf(p, sizeof(buf) + buf - p,
0ab33703	157	"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	158
386aa23d	159	for (i = 0; i < STA_TID_NUM; i++) {
dd318575 JB	160	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	161	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	162
e0b20f1c	163	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	164	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	165	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	166	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	167	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	168	tid_rx ? tid_rx->ssn : 0);
386aa23d	169
dd318575	170	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	171	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	172	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	173	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	174	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	175	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	176	}
dd318575	177	rcu_read_unlock();
eb2ba62e RR	178
	179	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	180	}
a75b4363 JB	181
	182	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	183	size_t count, loff_t *ppos)
	184	{
	185	char _buf[12], *buf = _buf;
	186	struct sta_info *sta = file->private_data;
	187	bool start, tx;
	188	unsigned long tid;
	189	int ret;
	190
	191	if (count > sizeof(_buf))
	192	return -EINVAL;
	193
	194	if (copy_from_user(buf, userbuf, count))
	195	return -EFAULT;
	196
	197	buf[sizeof(_buf) - 1] = '\0';
	198
	199	if (strncmp(buf, "tx ", 3) == 0) {
	200	buf += 3;
	201	tx = true;
	202	} else if (strncmp(buf, "rx ", 3) == 0) {
	203	buf += 3;
	204	tx = false;
	205	} else
	206	return -EINVAL;
	207
	208	if (strncmp(buf, "start ", 6) == 0) {
	209	buf += 6;
	210	start = true;
	211	if (!tx)
	212	return -EINVAL;
	213	} else if (strncmp(buf, "stop ", 5) == 0) {
	214	buf += 5;
	215	start = false;
	216	} else
	217	return -EINVAL;
	218
	219	tid = simple_strtoul(buf, NULL, 0);
	220
	221	if (tid >= STA_TID_NUM)
	222	return -EINVAL;
	223
	224	if (tx) {
	225	if (start)
bd2ce6e4	226	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	227	else
6a8579d0	228	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	229	} else {
53f73c09 JB	230	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	231	3, true);
a75b4363 JB	232	ret = 0;
	233	}
	234
	235	return ret ?: count;
	236	}
	237	STA_OPS_RW(agg_status);
eb2ba62e	238
64491f0e JB	239	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	240	size_t count, loff_t *ppos)
	241	{
7db94e21 LR	242	#define PRINT_HT_CAP(_cond, _str) \
	243	do { \
	244	if (_cond) \
	245	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	246	} while (0)
4c82bf8e	247	char buf[512], *p = buf;
64491f0e JB	248	int i;
	249	struct sta_info *sta = file->private_data;
	250	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	251
	252	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	253	htc->ht_supported ? "" : "not ");
	254	if (htc->ht_supported) {
cb136f54	255	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	256
c15cf5fc	257	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	258	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	259	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	260
	261	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	262	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	263	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	264
	265	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	266	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	267	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	268	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	269
	270	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	271	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	272	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	273	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	274
	275	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	276
7db94e21	277	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	278	"3839 bytes");
904603f9 BG	279	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	280	"7935 bytes");
	281
	282	/*
	283	* For beacons and probe response this would mean the BSS
	284	* does or does not allow the usage of DSSS/CCK HT40.
	285	* Otherwise it means the STA does or does not use
	286	* DSSS/CCK HT40.
	287	*/
	288	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	289	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	290
	291	/* BIT(13) is reserved */
	292
	293	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	294
	295	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	296
64491f0e JB	297	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	298	htc->ampdu_factor, htc->ampdu_density);
	299	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	300
64491f0e JB	301	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	302	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	303	htc->mcs.rx_mask[i]);
9da3e068 LR	304	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	305
	306	/* If not set this is meaningless */
	307	if (le16_to_cpu(htc->mcs.rx_highest)) {
	308	p += scnprintf(p, sizeof(buf)+buf-p,
	309	"MCS rx highest: %d Mbps\n",
	310	le16_to_cpu(htc->mcs.rx_highest));
	311	}
	312
64491f0e JB	313	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	314	htc->mcs.tx_params);
	315	}
	316
	317	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	318	}
	319	STA_OPS(ht_capa);
	320
e9f207f0	321	#define DEBUGFS_ADD(name) \
7bcfaf2f	322	debugfs_create_file(#name, 0400, \
e9f207f0 JB	323	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	324
2826bcd8 FF	325	#define DEBUGFS_ADD_COUNTER(name, field) \
	326	if (sizeof(sta->field) == sizeof(u32)) \
	327	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	328	(u32 *) &sta->field); \
	329	else \
	330	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	331	(u64 *) &sta->field);
e9f207f0 JB	332
	333	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	334	{
295bafb4	335	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	336	u8 mac[3*ETH_ALEN];
e9f207f0	337
63044e9f JB	338	sta->debugfs.add_has_run = true;
63044e9f JB	339
e9f207f0 JB	340	if (!stations_dir)
	341	return;
	342
0c68ae26	343	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	344
63044e9f JB	345	/*
	346	* This might fail due to a race condition:
	347	* When mac80211 unlinks a station, the debugfs entries
	348	* remain, but it is already possible to link a new
	349	* station with the same address which triggers adding
	350	* it to debugfs; therefore, if the old station isn't
	351	* destroyed quickly enough the old station's debugfs
	352	* dir might still be around.
	353	*/
0795af57	354	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	355	if (!sta->debugfs.dir)
	356	return;
	357
	358	DEBUGFS_ADD(flags);
	359	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	360	DEBUGFS_ADD(inactive_ms);
ebe27c91	361	DEBUGFS_ADD(connected_time);
e9f207f0	362	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	363	DEBUGFS_ADD(agg_status);
386aa23d	364	DEBUGFS_ADD(dev);
386aa23d	365	DEBUGFS_ADD(last_signal);
64491f0e	366	DEBUGFS_ADD(ht_capa);
2826bcd8 FF	367
	368	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	369	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	370	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	371	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	372	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	373	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	374	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	375	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	376	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	377	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	378	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
	379	DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
e9f207f0 JB	380	}
	381
	382	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	383	{
7bcfaf2f	384	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	385	sta->debugfs.dir = NULL;
e9f207f0 JB	386	}