[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>
 *
 * 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_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 = 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);
STA_FILE(dev, sdata->name, S);
STA_FILE(last_signal, last_signal, D);
STA_FILE(last_ack_signal, last_ack_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%s%s%s",
			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
			    TEST(PS_DRIVER), TEST(AUTHORIZED),
			    TEST(SHORT_PREAMBLE),
			    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), TEST(4ADDR_EVENT),
			    TEST(INSERTED), TEST(RATE_CONTROL),
			    TEST(TOFFSET_KNOWN));
#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*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);

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 active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");

	for (i = 0; i < IEEE80211_NUM_TIDS; 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;

	ret = kstrtoul(buf, 0, &tid);
	if (ret)
		return ret;

	if (tid >= IEEE80211_NUM_TIDS)
		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);

static ssize_t sta_current_tx_rate_read(struct file *file, char __user *userbuf,
					size_t count, loff_t *ppos)
{
	struct sta_info *sta = file->private_data;
	struct rate_info rinfo;
	u16 rate;
	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
	rate = cfg80211_calculate_bitrate(&rinfo);

	return mac80211_format_buffer(userbuf, count, ppos,
				      "%d.%d MBit/s\n",
				      rate/10, rate%10);
}
STA_OPS(current_tx_rate);

static ssize_t sta_last_rx_rate_read(struct file *file, char __user *userbuf,
				     size_t count, loff_t *ppos)
{
	struct sta_info *sta = file->private_data;
	struct rate_info rinfo;
	u16 rate;

	sta_set_rate_info_rx(sta, &rinfo);

	rate = cfg80211_calculate_bitrate(&rinfo);

	return mac80211_format_buffer(userbuf, count, ppos,
				      "%d.%d MBit/s\n",
				      rate/10, rate%10);
}
STA_OPS(last_rx_rate);

#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];

	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(last_ack_signal);
	DEBUGFS_ADD(current_tx_rate);
	DEBUGFS_ADD(last_rx_rate);

	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);

	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
}

void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
	struct ieee80211_local *local = sta->local;
	struct ieee80211_sub_if_data *sdata = sta->sdata;

	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
	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"
77d2ece6	17	#include "driver-ops.h"
e9f207f0 JB	18
	19	/* sta attributtes */
	20
07caf9d6	21	#define STA_READ(name, field, format_string) \
e9f207f0 JB	22	static ssize_t sta_ ##name## _read(struct file *file, \
	23	char __user *userbuf, \
	24	size_t count, loff_t *ppos) \
	25	{ \
e9f207f0	26	struct sta_info *sta = file->private_data; \
07caf9d6 EP	27	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	28	format_string, sta->field); \
e9f207f0	29	}
07caf9d6 EP	30	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
	31	#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
	32	#define STA_READ_S(name, field) STA_READ(name, field, "%s\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);
47846c9b	54	STA_FILE(dev, sdata->name, S);
e9f207f0	55	STA_FILE(last_signal, last_signal, D);
db94357d	56	STA_FILE(last_ack_signal, last_ack_signal, D);
e9f207f0 JB	57
	58	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	59	size_t count, loff_t *ppos)
	60	{
5bade101	61	char buf[121];
e9f207f0	62	struct sta_info *sta = file->private_data;
c2c98fde	63
5bade101 JB	64	#define TEST(flg) \
	65	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	66
	67	int res = scnprintf(buf, sizeof(buf),
dbf498fb	68	"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
5bade101 JB	69	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
5bade101 JB	70	TEST(PS_DRIVER), TEST(AUTHORIZED),
fb4431bf	71	TEST(SHORT_PREAMBLE),
5bade101 JB	72	TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
	73	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
	74	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
83d5cc01	75	TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
dbf498fb JC	76	TEST(INSERTED), TEST(RATE_CONTROL),
dbf498fb JC	77	TEST(TOFFSET_KNOWN));
5bade101	78	#undef TEST
e9f207f0 JB	79	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	80	}
	81	STA_OPS(flags);
	82
	83	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	84	char __user *userbuf,
	85	size_t count, loff_t *ppos)
	86	{
e9f207f0	87	struct sta_info *sta = file->private_data;
948d887d JB	88	char buf[17IEEE80211_NUM_ACS], p = buf;
	89	int ac;
	90
	91	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	92	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	93	skb_queue_len(&sta->ps_tx_buf[ac]) +
	94	skb_queue_len(&sta->tx_filtered[ac]));
	95	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	96	}
	97	STA_OPS(num_ps_buf_frames);
	98
e9f207f0 JB	99	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	100	size_t count, loff_t *ppos)
	101	{
e9f207f0	102	struct sta_info *sta = file->private_data;
07caf9d6 EP	103	return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
07caf9d6 EP	104	jiffies_to_msecs(jiffies - sta->last_rx));
e9f207f0 JB	105	}
	106	STA_OPS(inactive_ms);
	107
ebe27c91 MSS	108
	109	static ssize_t sta_connected_time_read(struct file file, char __user userbuf,
	110	size_t count, loff_t *ppos)
	111	{
	112	struct sta_info *sta = file->private_data;
	113	struct timespec uptime;
	114	struct tm result;
	115	long connected_time_secs;
	116	char buf[100];
	117	int res;
	118	do_posix_clock_monotonic_gettime(&uptime);
	119	connected_time_secs = uptime.tv_sec - sta->last_connected;
	120	time_to_tm(connected_time_secs, 0, &result);
	121	result.tm_year -= 70;
	122	result.tm_mday -= 1;
	123	res = scnprintf(buf, sizeof(buf),
7762bb02	124	"years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
ebe27c91 MSS	125	result.tm_year, result.tm_mon, result.tm_mday,
	126	result.tm_hour, result.tm_min, result.tm_sec);
	127	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	128	}
	129	STA_OPS(connected_time);
	130
	131
	132
e9f207f0 JB	133	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	134	size_t count, loff_t *ppos)
	135	{
5a306f58	136	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	137	int i;
e9f207f0 JB	138	struct sta_info *sta = file->private_data;
5a306f58	139	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	140	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	141	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	142	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	143	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	144	}
	145	STA_OPS(last_seq_ctrl);
	146
eb2ba62e RR	147	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	148	size_t count, loff_t *ppos)
	149	{
5a306f58	150	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	151	int i;
eb2ba62e RR	152	struct sta_info *sta = file->private_data;
dd318575 JB	153	struct tid_ampdu_rx *tid_rx;
	154	struct tid_ampdu_tx *tid_tx;
	155
	156	rcu_read_lock();
eb2ba62e	157
e0b20f1c	158	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	159	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	160	p += scnprintf(p, sizeof(buf) + buf - p,
0ab33703	161	"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	162
5a306f58	163	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	164	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	165	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	166
e0b20f1c	167	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	168	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	169	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	170	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	171	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	172	tid_rx ? tid_rx->ssn : 0);
386aa23d	173
dd318575	174	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	175	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	176	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	177	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	178	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	179	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	180	}
dd318575	181	rcu_read_unlock();
eb2ba62e RR	182
	183	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	184	}
a75b4363 JB	185
	186	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	187	size_t count, loff_t *ppos)
	188	{
	189	char _buf[12], *buf = _buf;
	190	struct sta_info *sta = file->private_data;
	191	bool start, tx;
	192	unsigned long tid;
	193	int ret;
	194
	195	if (count > sizeof(_buf))
	196	return -EINVAL;
	197
	198	if (copy_from_user(buf, userbuf, count))
	199	return -EFAULT;
	200
	201	buf[sizeof(_buf) - 1] = '\0';
	202
	203	if (strncmp(buf, "tx ", 3) == 0) {
	204	buf += 3;
	205	tx = true;
	206	} else if (strncmp(buf, "rx ", 3) == 0) {
	207	buf += 3;
	208	tx = false;
	209	} else
	210	return -EINVAL;
	211
	212	if (strncmp(buf, "start ", 6) == 0) {
	213	buf += 6;
	214	start = true;
	215	if (!tx)
	216	return -EINVAL;
	217	} else if (strncmp(buf, "stop ", 5) == 0) {
	218	buf += 5;
	219	start = false;
	220	} else
	221	return -EINVAL;
	222
4b5511eb AP	223	ret = kstrtoul(buf, 0, &tid);
	224	if (ret)
	225	return ret;
a75b4363	226
5a306f58	227	if (tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	228	return -EINVAL;
	229
	230	if (tx) {
	231	if (start)
bd2ce6e4	232	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	233	else
6a8579d0	234	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	235	} else {
53f73c09 JB	236	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	237	3, true);
a75b4363 JB	238	ret = 0;
	239	}
	240
	241	return ret ?: count;
	242	}
	243	STA_OPS_RW(agg_status);
eb2ba62e	244
64491f0e JB	245	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	246	size_t count, loff_t *ppos)
	247	{
7db94e21 LR	248	#define PRINT_HT_CAP(_cond, _str) \
	249	do { \
	250	if (_cond) \
	251	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	252	} while (0)
4c82bf8e	253	char buf[512], *p = buf;
64491f0e JB	254	int i;
	255	struct sta_info *sta = file->private_data;
	256	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	257
	258	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	259	htc->ht_supported ? "" : "not ");
	260	if (htc->ht_supported) {
cb136f54	261	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	262
c15cf5fc	263	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	264	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	265	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	266
	267	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	268	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	269	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	270
	271	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	272	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	273	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	274	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	275
	276	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	277	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	278	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	279	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	280
	281	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	282
7db94e21	283	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	284	"3839 bytes");
904603f9 BG	285	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	286	"7935 bytes");
	287
	288	/*
	289	* For beacons and probe response this would mean the BSS
	290	* does or does not allow the usage of DSSS/CCK HT40.
	291	* Otherwise it means the STA does or does not use
	292	* DSSS/CCK HT40.
	293	*/
	294	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	295	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	296
	297	/* BIT(13) is reserved */
	298
	299	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	300
	301	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	302
64491f0e JB	303	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	304	htc->ampdu_factor, htc->ampdu_density);
	305	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	306
64491f0e JB	307	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	308	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	309	htc->mcs.rx_mask[i]);
9da3e068 LR	310	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	311
	312	/* If not set this is meaningless */
	313	if (le16_to_cpu(htc->mcs.rx_highest)) {
	314	p += scnprintf(p, sizeof(buf)+buf-p,
	315	"MCS rx highest: %d Mbps\n",
	316	le16_to_cpu(htc->mcs.rx_highest));
	317	}
	318
64491f0e JB	319	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	320	htc->mcs.tx_params);
	321	}
	322
	323	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	324	}
	325	STA_OPS(ht_capa);
	326
91b8c050 S	327	static ssize_t sta_current_tx_rate_read(struct file file, char __user userbuf,
	328	size_t count, loff_t *ppos)
	329	{
	330	struct sta_info *sta = file->private_data;
	331	struct rate_info rinfo;
	332	u16 rate;
	333	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
	334	rate = cfg80211_calculate_bitrate(&rinfo);
	335
	336	return mac80211_format_buffer(userbuf, count, ppos,
	337	"%d.%d MBit/s\n",
	338	rate/10, rate%10);
	339	}
	340	STA_OPS(current_tx_rate);
	341
1f2e651c S	342	static ssize_t sta_last_rx_rate_read(struct file file, char __user userbuf,
	343	size_t count, loff_t *ppos)
	344	{
	345	struct sta_info *sta = file->private_data;
	346	struct rate_info rinfo;
	347	u16 rate;
	348
	349	sta_set_rate_info_rx(sta, &rinfo);
	350
	351	rate = cfg80211_calculate_bitrate(&rinfo);
	352
	353	return mac80211_format_buffer(userbuf, count, ppos,
	354	"%d.%d MBit/s\n",
	355	rate/10, rate%10);
	356	}
	357	STA_OPS(last_rx_rate);
	358
e9f207f0	359	#define DEBUGFS_ADD(name) \
7bcfaf2f	360	debugfs_create_file(#name, 0400, \
e9f207f0 JB	361	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	362
2826bcd8 FF	363	#define DEBUGFS_ADD_COUNTER(name, field) \
	364	if (sizeof(sta->field) == sizeof(u32)) \
	365	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	366	(u32 *) &sta->field); \
	367	else \
	368	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	369	(u64 *) &sta->field);
e9f207f0 JB	370
	371	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	372	{
77d2ece6 SM	373	struct ieee80211_local *local = sta->local;
77d2ece6 SM	374	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	375	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	376	u8 mac[3*ETH_ALEN];
e9f207f0	377
63044e9f JB	378	sta->debugfs.add_has_run = true;
63044e9f JB	379
e9f207f0 JB	380	if (!stations_dir)
	381	return;
	382
0c68ae26	383	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	384
63044e9f JB	385	/*
	386	* This might fail due to a race condition:
	387	* When mac80211 unlinks a station, the debugfs entries
	388	* remain, but it is already possible to link a new
	389	* station with the same address which triggers adding
	390	* it to debugfs; therefore, if the old station isn't
	391	* destroyed quickly enough the old station's debugfs
	392	* dir might still be around.
	393	*/
0795af57	394	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	395	if (!sta->debugfs.dir)
	396	return;
	397
	398	DEBUGFS_ADD(flags);
	399	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	400	DEBUGFS_ADD(inactive_ms);
ebe27c91	401	DEBUGFS_ADD(connected_time);
e9f207f0	402	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	403	DEBUGFS_ADD(agg_status);
386aa23d	404	DEBUGFS_ADD(dev);
386aa23d	405	DEBUGFS_ADD(last_signal);
64491f0e	406	DEBUGFS_ADD(ht_capa);
db94357d	407	DEBUGFS_ADD(last_ack_signal);
91b8c050	408	DEBUGFS_ADD(current_tx_rate);
1f2e651c	409	DEBUGFS_ADD(last_rx_rate);
2826bcd8 FF	410
	411	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	412	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	413	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	414	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	415	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	416	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	417	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	418	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	419	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	420	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	421	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
	422	DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
77d2ece6 SM	423
77d2ece6 SM	424	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
e9f207f0 JB	425	}
	426
	427	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	428	{
77d2ece6 SM	429	struct ieee80211_local *local = sta->local;
	430	struct ieee80211_sub_if_data *sdata = sta->sdata;
	431
	432	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
7bcfaf2f	433	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	434	sta->debugfs.dir = NULL;
e9f207f0 JB	435	}