[mirror_ubuntu-artful-kernel.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
 *
 * 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%s%s%s",
			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
			    TEST(PS_DRIVER), TEST(AUTHORIZED),
			    TEST(SHORT_PREAMBLE),
			    sta->sta.wme ? "WME\n" : "",
			    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(TDLS_INITIATOR),
			    TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
			    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;
	ktime_get_ts(&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\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);

	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)
{
	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>
d98ad83e	5	* Copyright 2013-2014 Intel Mobile Communications GmbH
e9f207f0 JB	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/debugfs.h>
	13	#include <linux/ieee80211.h>
	14	#include "ieee80211_i.h"
	15	#include "debugfs.h"
	16	#include "debugfs_sta.h"
	17	#include "sta_info.h"
77d2ece6	18	#include "driver-ops.h"
e9f207f0 JB	19
	20	/* sta attributtes */
	21
07caf9d6	22	#define STA_READ(name, field, format_string) \
e9f207f0 JB	23	static ssize_t sta_ ##name## _read(struct file *file, \
	24	char __user *userbuf, \
	25	size_t count, loff_t *ppos) \
	26	{ \
e9f207f0	27	struct sta_info *sta = file->private_data; \
07caf9d6 EP	28	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	29	format_string, sta->field); \
e9f207f0	30	}
07caf9d6 EP	31	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
	32	#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
	33	#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
e9f207f0	34
e9f207f0 JB	35	#define STA_OPS(name) \
	36	static const struct file_operations sta_ ##name## _ops = { \
	37	.read = sta_##name##_read, \
234e3405	38	.open = simple_open, \
2b18ab36	39	.llseek = generic_file_llseek, \
e9f207f0 JB	40	}
e9f207f0 JB	41
a75b4363 JB	42	#define STA_OPS_RW(name) \
	43	static const struct file_operations sta_ ##name## _ops = { \
	44	.read = sta_##name##_read, \
	45	.write = sta_##name##_write, \
234e3405	46	.open = simple_open, \
2b18ab36	47	.llseek = generic_file_llseek, \
a75b4363 JB	48	}
a75b4363 JB	49
e9f207f0 JB	50	#define STA_FILE(name, field, format) \
	51	STA_READ_##format(name, field) \
	52	STA_OPS(name)
	53
17741cdc	54	STA_FILE(aid, sta.aid, D);
47846c9b	55	STA_FILE(dev, sdata->name, S);
e9f207f0	56	STA_FILE(last_signal, last_signal, D);
db94357d	57	STA_FILE(last_ack_signal, last_ack_signal, D);
78e443e4	58	STA_FILE(beacon_loss_count, beacon_loss_count, D);
e9f207f0 JB	59
	60	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	61	size_t count, loff_t *ppos)
	62	{
5bade101	63	char buf[121];
e9f207f0	64	struct sta_info *sta = file->private_data;
c2c98fde	65
5bade101 JB	66	#define TEST(flg) \
	67	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	68
	69	int res = scnprintf(buf, sizeof(buf),
a7a6bdd0	70	"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
5bade101 JB	71	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
5bade101 JB	72	TEST(PS_DRIVER), TEST(AUTHORIZED),
fb4431bf	73	TEST(SHORT_PREAMBLE),
a74a8c84 JB	74	sta->sta.wme ? "WME\n" : "",
a74a8c84 JB	75	TEST(WDS), TEST(CLEAR_PS_FILT),
5bade101 JB	76	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
5bade101 JB	77	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
9041c1fa	78	TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR),
a7a6bdd0 AN	79	TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
	80	TEST(4ADDR_EVENT), TEST(INSERTED),
	81	TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
	82	TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
5bade101	83	#undef TEST
e9f207f0 JB	84	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	85	}
	86	STA_OPS(flags);
	87
	88	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	89	char __user *userbuf,
	90	size_t count, loff_t *ppos)
	91	{
e9f207f0	92	struct sta_info *sta = file->private_data;
948d887d JB	93	char buf[17IEEE80211_NUM_ACS], p = buf;
	94	int ac;
	95
	96	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	97	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	98	skb_queue_len(&sta->ps_tx_buf[ac]) +
	99	skb_queue_len(&sta->tx_filtered[ac]));
	100	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	101	}
	102	STA_OPS(num_ps_buf_frames);
	103
e9f207f0 JB	104	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	105	size_t count, loff_t *ppos)
	106	{
e9f207f0	107	struct sta_info *sta = file->private_data;
07caf9d6 EP	108	return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
07caf9d6 EP	109	jiffies_to_msecs(jiffies - sta->last_rx));
e9f207f0 JB	110	}
	111	STA_OPS(inactive_ms);
	112
ebe27c91 MSS	113
	114	static ssize_t sta_connected_time_read(struct file file, char __user userbuf,
	115	size_t count, loff_t *ppos)
	116	{
	117	struct sta_info *sta = file->private_data;
	118	struct timespec uptime;
	119	struct tm result;
	120	long connected_time_secs;
	121	char buf[100];
	122	int res;
18171520	123	ktime_get_ts(&uptime);
ebe27c91 MSS	124	connected_time_secs = uptime.tv_sec - sta->last_connected;
	125	time_to_tm(connected_time_secs, 0, &result);
	126	result.tm_year -= 70;
	127	result.tm_mday -= 1;
	128	res = scnprintf(buf, sizeof(buf),
7762bb02	129	"years - %ld\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
ebe27c91 MSS	130	result.tm_year, result.tm_mon, result.tm_mday,
	131	result.tm_hour, result.tm_min, result.tm_sec);
	132	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	133	}
	134	STA_OPS(connected_time);
	135
	136
	137
e9f207f0 JB	138	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	139	size_t count, loff_t *ppos)
	140	{
5a306f58	141	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	142	int i;
e9f207f0 JB	143	struct sta_info *sta = file->private_data;
5a306f58	144	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	145	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	146	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	147	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	148	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	149	}
	150	STA_OPS(last_seq_ctrl);
	151
eb2ba62e RR	152	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	153	size_t count, loff_t *ppos)
	154	{
5a306f58	155	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	156	int i;
eb2ba62e RR	157	struct sta_info *sta = file->private_data;
dd318575 JB	158	struct tid_ampdu_rx *tid_rx;
	159	struct tid_ampdu_tx *tid_tx;
	160
	161	rcu_read_lock();
eb2ba62e	162
e0b20f1c	163	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	164	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	165	p += scnprintf(p, sizeof(buf) + buf - p,
14b058bb	166	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	167
5a306f58	168	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	169	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	170	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	171
e0b20f1c	172	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	173	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	174	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	175	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	176	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	177	tid_rx ? tid_rx->ssn : 0);
386aa23d	178
dd318575	179	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	180	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	181	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	182	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	183	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	184	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	185	}
dd318575	186	rcu_read_unlock();
eb2ba62e RR	187
	188	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	189	}
a75b4363 JB	190
	191	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	192	size_t count, loff_t *ppos)
	193	{
c4d2ffac	194	char _buf[12] = {}, *buf = _buf;
a75b4363 JB	195	struct sta_info *sta = file->private_data;
	196	bool start, tx;
	197	unsigned long tid;
	198	int ret;
	199
	200	if (count > sizeof(_buf))
	201	return -EINVAL;
	202
	203	if (copy_from_user(buf, userbuf, count))
	204	return -EFAULT;
	205
	206	buf[sizeof(_buf) - 1] = '\0';
	207
	208	if (strncmp(buf, "tx ", 3) == 0) {
	209	buf += 3;
	210	tx = true;
	211	} else if (strncmp(buf, "rx ", 3) == 0) {
	212	buf += 3;
	213	tx = false;
	214	} else
	215	return -EINVAL;
	216
	217	if (strncmp(buf, "start ", 6) == 0) {
	218	buf += 6;
	219	start = true;
	220	if (!tx)
	221	return -EINVAL;
	222	} else if (strncmp(buf, "stop ", 5) == 0) {
	223	buf += 5;
	224	start = false;
	225	} else
	226	return -EINVAL;
	227
4b5511eb AP	228	ret = kstrtoul(buf, 0, &tid);
	229	if (ret)
	230	return ret;
a75b4363	231
5a306f58	232	if (tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	233	return -EINVAL;
	234
	235	if (tx) {
	236	if (start)
bd2ce6e4	237	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	238	else
6a8579d0	239	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	240	} else {
53f73c09 JB	241	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	242	3, true);
a75b4363 JB	243	ret = 0;
	244	}
	245
	246	return ret ?: count;
	247	}
	248	STA_OPS_RW(agg_status);
eb2ba62e	249
64491f0e JB	250	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	251	size_t count, loff_t *ppos)
	252	{
7db94e21 LR	253	#define PRINT_HT_CAP(_cond, _str) \
	254	do { \
	255	if (_cond) \
	256	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	257	} while (0)
4c82bf8e	258	char buf[512], *p = buf;
64491f0e JB	259	int i;
	260	struct sta_info *sta = file->private_data;
	261	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	262
	263	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	264	htc->ht_supported ? "" : "not ");
	265	if (htc->ht_supported) {
cb136f54	266	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	267
c15cf5fc	268	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	269	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	270	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	271
	272	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	273	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	274	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	275
	276	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	277	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	278	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	279	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	280
	281	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	282	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	283	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	284	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	285
	286	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	287
7db94e21	288	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	289	"3839 bytes");
904603f9 BG	290	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	291	"7935 bytes");
	292
	293	/*
	294	* For beacons and probe response this would mean the BSS
	295	* does or does not allow the usage of DSSS/CCK HT40.
	296	* Otherwise it means the STA does or does not use
	297	* DSSS/CCK HT40.
	298	*/
	299	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	300	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	301
	302	/* BIT(13) is reserved */
	303
	304	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	305
	306	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	307
64491f0e JB	308	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	309	htc->ampdu_factor, htc->ampdu_density);
	310	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	311
64491f0e JB	312	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	313	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	314	htc->mcs.rx_mask[i]);
9da3e068 LR	315	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	316
	317	/* If not set this is meaningless */
	318	if (le16_to_cpu(htc->mcs.rx_highest)) {
	319	p += scnprintf(p, sizeof(buf)+buf-p,
	320	"MCS rx highest: %d Mbps\n",
	321	le16_to_cpu(htc->mcs.rx_highest));
	322	}
	323
64491f0e JB	324	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	325	htc->mcs.tx_params);
	326	}
	327
	328	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	329	}
	330	STA_OPS(ht_capa);
	331
90fcba65 JB	332	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	333	size_t count, loff_t *ppos)
	334	{
	335	char buf[128], *p = buf;
	336	struct sta_info *sta = file->private_data;
	337	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	338
	339	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	340	vhtc->vht_supported ? "" : "not ");
	341	if (vhtc->vht_supported) {
	342	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
	343
	344	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	345	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	346	if (vhtc->vht_mcs.rx_highest)
	347	p += scnprintf(p, sizeof(buf)+buf-p,
	348	"MCS RX highest: %d Mbps\n",
	349	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	350	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	351	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	352	if (vhtc->vht_mcs.tx_highest)
	353	p += scnprintf(p, sizeof(buf)+buf-p,
	354	"MCS TX highest: %d Mbps\n",
	355	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	356	}
	357
	358	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	359	}
	360	STA_OPS(vht_capa);
	361
91b8c050 S	362	static ssize_t sta_current_tx_rate_read(struct file file, char __user userbuf,
	363	size_t count, loff_t *ppos)
	364	{
	365	struct sta_info *sta = file->private_data;
	366	struct rate_info rinfo;
	367	u16 rate;
	368	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo);
	369	rate = cfg80211_calculate_bitrate(&rinfo);
	370
	371	return mac80211_format_buffer(userbuf, count, ppos,
	372	"%d.%d MBit/s\n",
	373	rate/10, rate%10);
	374	}
	375	STA_OPS(current_tx_rate);
	376
1f2e651c S	377	static ssize_t sta_last_rx_rate_read(struct file file, char __user userbuf,
	378	size_t count, loff_t *ppos)
	379	{
	380	struct sta_info *sta = file->private_data;
	381	struct rate_info rinfo;
	382	u16 rate;
	383
	384	sta_set_rate_info_rx(sta, &rinfo);
	385
	386	rate = cfg80211_calculate_bitrate(&rinfo);
	387
	388	return mac80211_format_buffer(userbuf, count, ppos,
	389	"%d.%d MBit/s\n",
	390	rate/10, rate%10);
	391	}
	392	STA_OPS(last_rx_rate);
	393
e9f207f0	394	#define DEBUGFS_ADD(name) \
7bcfaf2f	395	debugfs_create_file(#name, 0400, \
e9f207f0 JB	396	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	397
2826bcd8 FF	398	#define DEBUGFS_ADD_COUNTER(name, field) \
	399	if (sizeof(sta->field) == sizeof(u32)) \
	400	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	401	(u32 *) &sta->field); \
	402	else \
	403	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	404	(u64 *) &sta->field);
e9f207f0 JB	405
	406	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	407	{
77d2ece6 SM	408	struct ieee80211_local *local = sta->local;
77d2ece6 SM	409	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	410	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	411	u8 mac[3*ETH_ALEN];
e9f207f0	412
63044e9f JB	413	sta->debugfs.add_has_run = true;
63044e9f JB	414
e9f207f0 JB	415	if (!stations_dir)
	416	return;
	417
0c68ae26	418	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	419
63044e9f JB	420	/*
	421	* This might fail due to a race condition:
	422	* When mac80211 unlinks a station, the debugfs entries
	423	* remain, but it is already possible to link a new
	424	* station with the same address which triggers adding
	425	* it to debugfs; therefore, if the old station isn't
	426	* destroyed quickly enough the old station's debugfs
	427	* dir might still be around.
	428	*/
0795af57	429	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	430	if (!sta->debugfs.dir)
	431	return;
	432
	433	DEBUGFS_ADD(flags);
	434	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	435	DEBUGFS_ADD(inactive_ms);
ebe27c91	436	DEBUGFS_ADD(connected_time);
e9f207f0	437	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	438	DEBUGFS_ADD(agg_status);
386aa23d	439	DEBUGFS_ADD(dev);
386aa23d	440	DEBUGFS_ADD(last_signal);
78e443e4	441	DEBUGFS_ADD(beacon_loss_count);
64491f0e	442	DEBUGFS_ADD(ht_capa);
90fcba65	443	DEBUGFS_ADD(vht_capa);
db94357d	444	DEBUGFS_ADD(last_ack_signal);
91b8c050	445	DEBUGFS_ADD(current_tx_rate);
1f2e651c	446	DEBUGFS_ADD(last_rx_rate);
2826bcd8 FF	447
	448	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	449	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	450	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	451	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	452	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	453	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	454	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	455	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	456	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	457	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	458	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
77d2ece6	459
7cf1f14e JB	460	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
	461	debugfs_create_x32("driver_buffered_tids", 0400,
	462	sta->debugfs.dir,
	463	(u32 *)&sta->driver_buffered_tids);
	464	else
	465	debugfs_create_x64("driver_buffered_tids", 0400,
	466	sta->debugfs.dir,
	467	(u64 *)&sta->driver_buffered_tids);
	468
77d2ece6	469	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
e9f207f0 JB	470	}
	471
	472	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	473	{
77d2ece6 SM	474	struct ieee80211_local *local = sta->local;
	475	struct ieee80211_sub_if_data *sdata = sta->sdata;
	476
	477	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
7bcfaf2f	478	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	479	sta->debugfs.dir = NULL;
e9f207f0 JB	480	}