[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"
#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);
STA_FILE(beacon_loss_count, beacon_loss_count, 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%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), TEST(MPSP_OWNER),
			    TEST(MPSP_RECIPIENT));
#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_vht_capa_read(struct file *file, char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	char buf[128], *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);

		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);

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(beacon_loss_count);
	DEBUGFS_ADD(ht_capa);
	DEBUGFS_ADD(vht_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);
78e443e4	57	STA_FILE(beacon_loss_count, beacon_loss_count, D);
e9f207f0 JB	58
	59	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	60	size_t count, loff_t *ppos)
	61	{
5bade101	62	char buf[121];
e9f207f0	63	struct sta_info *sta = file->private_data;
c2c98fde	64
5bade101 JB	65	#define TEST(flg) \
	66	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	67
	68	int res = scnprintf(buf, sizeof(buf),
3f52b7e3	69	"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
5bade101 JB	70	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
5bade101 JB	71	TEST(PS_DRIVER), TEST(AUTHORIZED),
fb4431bf	72	TEST(SHORT_PREAMBLE),
5bade101 JB	73	TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
	74	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
	75	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
83d5cc01	76	TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
dbf498fb	77	TEST(INSERTED), TEST(RATE_CONTROL),
3f52b7e3 MP	78	TEST(TOFFSET_KNOWN), TEST(MPSP_OWNER),
3f52b7e3 MP	79	TEST(MPSP_RECIPIENT));
5bade101	80	#undef TEST
e9f207f0 JB	81	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	82	}
	83	STA_OPS(flags);
	84
	85	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	86	char __user *userbuf,
	87	size_t count, loff_t *ppos)
	88	{
e9f207f0	89	struct sta_info *sta = file->private_data;
948d887d JB	90	char buf[17IEEE80211_NUM_ACS], p = buf;
	91	int ac;
	92
	93	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	94	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	95	skb_queue_len(&sta->ps_tx_buf[ac]) +
	96	skb_queue_len(&sta->tx_filtered[ac]));
	97	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	98	}
	99	STA_OPS(num_ps_buf_frames);
	100
e9f207f0 JB	101	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	102	size_t count, loff_t *ppos)
	103	{
e9f207f0	104	struct sta_info *sta = file->private_data;
07caf9d6 EP	105	return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
07caf9d6 EP	106	jiffies_to_msecs(jiffies - sta->last_rx));
e9f207f0 JB	107	}
	108	STA_OPS(inactive_ms);
	109
ebe27c91 MSS	110
	111	static ssize_t sta_connected_time_read(struct file file, char __user userbuf,
	112	size_t count, loff_t *ppos)
	113	{
	114	struct sta_info *sta = file->private_data;
	115	struct timespec uptime;
	116	struct tm result;
	117	long connected_time_secs;
	118	char buf[100];
	119	int res;
	120	do_posix_clock_monotonic_gettime(&uptime);
	121	connected_time_secs = uptime.tv_sec - sta->last_connected;
	122	time_to_tm(connected_time_secs, 0, &result);
	123	result.tm_year -= 70;
	124	result.tm_mday -= 1;
	125	res = scnprintf(buf, sizeof(buf),
7762bb02	126	"years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
ebe27c91 MSS	127	result.tm_year, result.tm_mon, result.tm_mday,
	128	result.tm_hour, result.tm_min, result.tm_sec);
	129	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	130	}
	131	STA_OPS(connected_time);
	132
	133
	134
e9f207f0 JB	135	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	136	size_t count, loff_t *ppos)
	137	{
5a306f58	138	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	139	int i;
e9f207f0 JB	140	struct sta_info *sta = file->private_data;
5a306f58	141	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	142	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	143	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	144	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	145	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	146	}
	147	STA_OPS(last_seq_ctrl);
	148
eb2ba62e RR	149	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	150	size_t count, loff_t *ppos)
	151	{
5a306f58	152	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	153	int i;
eb2ba62e RR	154	struct sta_info *sta = file->private_data;
dd318575 JB	155	struct tid_ampdu_rx *tid_rx;
	156	struct tid_ampdu_tx *tid_tx;
	157
	158	rcu_read_lock();
eb2ba62e	159
e0b20f1c	160	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	161	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	162	p += scnprintf(p, sizeof(buf) + buf - p,
0ab33703	163	"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	164
5a306f58	165	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	166	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	167	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	168
e0b20f1c	169	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	170	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	171	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	172	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	173	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	174	tid_rx ? tid_rx->ssn : 0);
386aa23d	175
dd318575	176	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	177	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	178	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	179	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	180	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	181	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	182	}
dd318575	183	rcu_read_unlock();
eb2ba62e RR	184
	185	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	186	}
a75b4363 JB	187
	188	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	189	size_t count, loff_t *ppos)
	190	{
	191	char _buf[12], *buf = _buf;
	192	struct sta_info *sta = file->private_data;
	193	bool start, tx;
	194	unsigned long tid;
	195	int ret;
	196
	197	if (count > sizeof(_buf))
	198	return -EINVAL;
	199
	200	if (copy_from_user(buf, userbuf, count))
	201	return -EFAULT;
	202
	203	buf[sizeof(_buf) - 1] = '\0';
	204
	205	if (strncmp(buf, "tx ", 3) == 0) {
	206	buf += 3;
	207	tx = true;
	208	} else if (strncmp(buf, "rx ", 3) == 0) {
	209	buf += 3;
	210	tx = false;
	211	} else
	212	return -EINVAL;
	213
	214	if (strncmp(buf, "start ", 6) == 0) {
	215	buf += 6;
	216	start = true;
	217	if (!tx)
	218	return -EINVAL;
	219	} else if (strncmp(buf, "stop ", 5) == 0) {
	220	buf += 5;
	221	start = false;
	222	} else
	223	return -EINVAL;
	224
4b5511eb AP	225	ret = kstrtoul(buf, 0, &tid);
	226	if (ret)
	227	return ret;
a75b4363	228
5a306f58	229	if (tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	230	return -EINVAL;
	231
	232	if (tx) {
	233	if (start)
bd2ce6e4	234	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	235	else
6a8579d0	236	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	237	} else {
53f73c09 JB	238	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	239	3, true);
a75b4363 JB	240	ret = 0;
	241	}
	242
	243	return ret ?: count;
	244	}
	245	STA_OPS_RW(agg_status);
eb2ba62e	246
64491f0e JB	247	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	248	size_t count, loff_t *ppos)
	249	{
7db94e21 LR	250	#define PRINT_HT_CAP(_cond, _str) \
	251	do { \
	252	if (_cond) \
	253	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	254	} while (0)
4c82bf8e	255	char buf[512], *p = buf;
64491f0e JB	256	int i;
	257	struct sta_info *sta = file->private_data;
	258	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	259
	260	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	261	htc->ht_supported ? "" : "not ");
	262	if (htc->ht_supported) {
cb136f54	263	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	264
c15cf5fc	265	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	266	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	267	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	268
	269	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	270	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	271	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	272
	273	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	274	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	275	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	276	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	277
	278	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	279	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	280	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	281	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	282
	283	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	284
7db94e21	285	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	286	"3839 bytes");
904603f9 BG	287	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	288	"7935 bytes");
	289
	290	/*
	291	* For beacons and probe response this would mean the BSS
	292	* does or does not allow the usage of DSSS/CCK HT40.
	293	* Otherwise it means the STA does or does not use
	294	* DSSS/CCK HT40.
	295	*/
	296	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	297	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	298
	299	/* BIT(13) is reserved */
	300
	301	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	302
	303	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	304
64491f0e JB	305	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	306	htc->ampdu_factor, htc->ampdu_density);
	307	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	308
64491f0e JB	309	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	310	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	311	htc->mcs.rx_mask[i]);
9da3e068 LR	312	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	313
	314	/* If not set this is meaningless */
	315	if (le16_to_cpu(htc->mcs.rx_highest)) {
	316	p += scnprintf(p, sizeof(buf)+buf-p,
	317	"MCS rx highest: %d Mbps\n",
	318	le16_to_cpu(htc->mcs.rx_highest));
	319	}
	320
64491f0e JB	321	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	322	htc->mcs.tx_params);
	323	}
	324
	325	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	326	}
	327	STA_OPS(ht_capa);
	328
90fcba65 JB	329	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	330	size_t count, loff_t *ppos)
	331	{
	332	char buf[128], *p = buf;
	333	struct sta_info *sta = file->private_data;
	334	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	335
	336	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	337	vhtc->vht_supported ? "" : "not ");
	338	if (vhtc->vht_supported) {
	339	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
	340
	341	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	342	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	343	if (vhtc->vht_mcs.rx_highest)
	344	p += scnprintf(p, sizeof(buf)+buf-p,
	345	"MCS RX highest: %d Mbps\n",
	346	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	347	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	348	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	349	if (vhtc->vht_mcs.tx_highest)
	350	p += scnprintf(p, sizeof(buf)+buf-p,
	351	"MCS TX highest: %d Mbps\n",
	352	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	353	}
	354
	355	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	356	}
	357	STA_OPS(vht_capa);
	358
91b8c050 S	359	static ssize_t sta_current_tx_rate_read(struct file file, char __user userbuf,
	360	size_t count, loff_t *ppos)
	361	{
	362	struct sta_info *sta = file->private_data;
	363	struct rate_info rinfo;
	364	u16 rate;
	365	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
	366	rate = cfg80211_calculate_bitrate(&rinfo);
	367
	368	return mac80211_format_buffer(userbuf, count, ppos,
	369	"%d.%d MBit/s\n",
	370	rate/10, rate%10);
	371	}
	372	STA_OPS(current_tx_rate);
	373
1f2e651c S	374	static ssize_t sta_last_rx_rate_read(struct file file, char __user userbuf,
	375	size_t count, loff_t *ppos)
	376	{
	377	struct sta_info *sta = file->private_data;
	378	struct rate_info rinfo;
	379	u16 rate;
	380
	381	sta_set_rate_info_rx(sta, &rinfo);
	382
	383	rate = cfg80211_calculate_bitrate(&rinfo);
	384
	385	return mac80211_format_buffer(userbuf, count, ppos,
	386	"%d.%d MBit/s\n",
	387	rate/10, rate%10);
	388	}
	389	STA_OPS(last_rx_rate);
	390
e9f207f0	391	#define DEBUGFS_ADD(name) \
7bcfaf2f	392	debugfs_create_file(#name, 0400, \
e9f207f0 JB	393	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	394
2826bcd8 FF	395	#define DEBUGFS_ADD_COUNTER(name, field) \
	396	if (sizeof(sta->field) == sizeof(u32)) \
	397	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	398	(u32 *) &sta->field); \
	399	else \
	400	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	401	(u64 *) &sta->field);
e9f207f0 JB	402
	403	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	404	{
77d2ece6 SM	405	struct ieee80211_local *local = sta->local;
77d2ece6 SM	406	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	407	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	408	u8 mac[3*ETH_ALEN];
e9f207f0	409
63044e9f JB	410	sta->debugfs.add_has_run = true;
63044e9f JB	411
e9f207f0 JB	412	if (!stations_dir)
	413	return;
	414
0c68ae26	415	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	416
63044e9f JB	417	/*
	418	* This might fail due to a race condition:
	419	* When mac80211 unlinks a station, the debugfs entries
	420	* remain, but it is already possible to link a new
	421	* station with the same address which triggers adding
	422	* it to debugfs; therefore, if the old station isn't
	423	* destroyed quickly enough the old station's debugfs
	424	* dir might still be around.
	425	*/
0795af57	426	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	427	if (!sta->debugfs.dir)
	428	return;
	429
	430	DEBUGFS_ADD(flags);
	431	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	432	DEBUGFS_ADD(inactive_ms);
ebe27c91	433	DEBUGFS_ADD(connected_time);
e9f207f0	434	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	435	DEBUGFS_ADD(agg_status);
386aa23d	436	DEBUGFS_ADD(dev);
386aa23d	437	DEBUGFS_ADD(last_signal);
78e443e4	438	DEBUGFS_ADD(beacon_loss_count);
64491f0e	439	DEBUGFS_ADD(ht_capa);
90fcba65	440	DEBUGFS_ADD(vht_capa);
db94357d	441	DEBUGFS_ADD(last_ack_signal);
91b8c050	442	DEBUGFS_ADD(current_tx_rate);
1f2e651c	443	DEBUGFS_ADD(last_rx_rate);
2826bcd8 FF	444
	445	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	446	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	447	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	448	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	449	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	450	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	451	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	452	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	453	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	454	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	455	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
	456	DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
77d2ece6 SM	457
77d2ece6 SM	458	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
e9f207f0 JB	459	}
	460
	461	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	462	{
77d2ece6 SM	463	struct ieee80211_local *local = sta->local;
	464	struct ieee80211_sub_if_data *sdata = sta->sdata;
	465
	466	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
7bcfaf2f	467	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	468	sta->debugfs.dir = NULL;
e9f207f0 JB	469	}