[net-next-2.6.git] / net / mac80211 / debugfs_sta.c

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

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

/* sta attributtes */

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

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

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

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

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

static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
			      size_t count, loff_t *ppos)
{
	char buf[100];
	struct sta_info *sta = file->private_data;
	u32 staflags = get_sta_flags(sta);
	int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
		staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
		staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
		staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
		staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
		staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
		staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
		staflags & WLAN_STA_WME ? "WME\n" : "",
		staflags & WLAN_STA_WDS ? "WDS\n" : "",
		staflags & WLAN_STA_MFP ? "MFP\n" : "");
	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;
	return mac80211_format_buffer(userbuf, count, ppos, "%u\n",
				      skb_queue_len(&sta->ps_tx_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_last_seq_ctrl_read(struct file *file, char __user *userbuf,
				      size_t count, loff_t *ppos)
{
	char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
	int i;
	struct sta_info *sta = file->private_data;
	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
		p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
			       le16_to_cpu(sta->last_seq_ctrl[i]));
	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(last_seq_ctrl);

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

	spin_lock_bh(&sta->lock);
	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
			sta->ampdu_mlme.dialog_token_allocator + 1);
	p += scnprintf(p, sizeof(buf) + buf - p,
		       "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
	for (i = 0; i < STA_TID_NUM; i++) {
		p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
				!!sta->ampdu_mlme.tid_rx[i]);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
				sta->ampdu_mlme.tid_rx[i] ?
				sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
				sta->ampdu_mlme.tid_rx[i] ?
				sta->ampdu_mlme.tid_rx[i]->ssn : 0);

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

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

static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
				    size_t count, loff_t *ppos)
{
	char _buf[12], *buf = _buf;
	struct sta_info *sta = file->private_data;
	bool start, tx;
	unsigned long tid;
	int ret;

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

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

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

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

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

	tid = simple_strtoul(buf, NULL, 0);

	if (tid >= STA_TID_NUM)
		return -EINVAL;

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

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

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

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

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

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

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

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

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

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

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

		/* BIT(13) is reserved */

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

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

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

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

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

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

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

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

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

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

	sta->debugfs.add_has_run = true;

	if (!stations_dir)
		return;

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

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

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

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

void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
	debugfs_remove_recursive(sta->debugfs.dir);
	sta->debugfs.dir = NULL;
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* Copyright 2003-2005 Devicescape Software, Inc.
	3	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	4	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/debugfs.h>
	12	#include <linux/ieee80211.h>
	13	#include "ieee80211_i.h"
	14	#include "debugfs.h"
	15	#include "debugfs_sta.h"
	16	#include "sta_info.h"
	17
	18	/* sta attributtes */
	19
07caf9d6	20	#define STA_READ(name, field, format_string) \
e9f207f0 JB	21	static ssize_t sta_ ##name## _read(struct file *file, \
	22	char __user *userbuf, \
	23	size_t count, loff_t *ppos) \
	24	{ \
e9f207f0	25	struct sta_info *sta = file->private_data; \
07caf9d6 EP	26	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	27	format_string, sta->field); \
e9f207f0	28	}
07caf9d6 EP	29	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
	30	#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
	31	#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
e9f207f0	32
e9f207f0 JB	33	#define STA_OPS(name) \
	34	static const struct file_operations sta_ ##name## _ops = { \
	35	.read = sta_##name##_read, \
	36	.open = mac80211_open_file_generic, \
2b18ab36	37	.llseek = generic_file_llseek, \
e9f207f0 JB	38	}
e9f207f0 JB	39
a75b4363 JB	40	#define STA_OPS_RW(name) \
	41	static const struct file_operations sta_ ##name## _ops = { \
	42	.read = sta_##name##_read, \
	43	.write = sta_##name##_write, \
	44	.open = mac80211_open_file_generic, \
2b18ab36	45	.llseek = generic_file_llseek, \
a75b4363 JB	46	}
a75b4363 JB	47
e9f207f0 JB	48	#define STA_FILE(name, field, format) \
	49	STA_READ_##format(name, field) \
	50	STA_OPS(name)
	51
17741cdc	52	STA_FILE(aid, sta.aid, D);
47846c9b	53	STA_FILE(dev, sdata->name, S);
e9f207f0	54	STA_FILE(last_signal, last_signal, D);
e9f207f0 JB	55
	56	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	57	size_t count, loff_t *ppos)
	58	{
	59	char buf[100];
	60	struct sta_info *sta = file->private_data;
07346f81	61	u32 staflags = get_sta_flags(sta);
af818581	62	int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
07346f81 JB	63	staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
07346f81 JB	64	staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
af818581 JB	65	staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
af818581 JB	66	staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
07346f81 JB	67	staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
	68	staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
	69	staflags & WLAN_STA_WME ? "WME\n" : "",
5394af4d JM	70	staflags & WLAN_STA_WDS ? "WDS\n" : "",
5394af4d JM	71	staflags & WLAN_STA_MFP ? "MFP\n" : "");
e9f207f0 JB	72	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	73	}
	74	STA_OPS(flags);
	75
	76	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	77	char __user *userbuf,
	78	size_t count, loff_t *ppos)
	79	{
e9f207f0	80	struct sta_info *sta = file->private_data;
07caf9d6 EP	81	return mac80211_format_buffer(userbuf, count, ppos, "%u\n",
07caf9d6 EP	82	skb_queue_len(&sta->ps_tx_buf));
e9f207f0 JB	83	}
	84	STA_OPS(num_ps_buf_frames);
	85
e9f207f0 JB	86	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	87	size_t count, loff_t *ppos)
	88	{
e9f207f0	89	struct sta_info *sta = file->private_data;
07caf9d6 EP	90	return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
07caf9d6 EP	91	jiffies_to_msecs(jiffies - sta->last_rx));
e9f207f0 JB	92	}
	93	STA_OPS(inactive_ms);
	94
	95	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	96	size_t count, loff_t *ppos)
	97	{
	98	char buf[15NUM_RX_DATA_QUEUES], p = buf;
	99	int i;
	100	struct sta_info *sta = file->private_data;
	101	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
	102	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	103	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	104	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	105	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	106	}
	107	STA_OPS(last_seq_ctrl);
	108
eb2ba62e RR	109	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	110	size_t count, loff_t *ppos)
	111	{
098a6070	112	char buf[71 + STA_TID_NUM * 40], *p = buf;
eb2ba62e RR	113	int i;
eb2ba62e RR	114	struct sta_info *sta = file->private_data;
eb2ba62e	115
386aa23d	116	spin_lock_bh(&sta->lock);
e0b20f1c	117	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	118	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	119	p += scnprintf(p, sizeof(buf) + buf - p,
0ab33703	120	"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
386aa23d	121	for (i = 0; i < STA_TID_NUM; i++) {
e0b20f1c PR	122	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
e0b20f1c PR	123	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
a87f736d	124	!!sta->ampdu_mlme.tid_rx[i]);
e0b20f1c	125	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
a87f736d	126	sta->ampdu_mlme.tid_rx[i] ?
386aa23d	127	sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
e0b20f1c	128	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
a87f736d	129	sta->ampdu_mlme.tid_rx[i] ?
386aa23d JB	130	sta->ampdu_mlme.tid_rx[i]->ssn : 0);
386aa23d JB	131
e0b20f1c	132	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
a622ab72	133	!!sta->ampdu_mlme.tid_tx[i]);
e0b20f1c	134	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
a622ab72	135	sta->ampdu_mlme.tid_tx[i] ?
386aa23d	136	sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
e0b20f1c	137	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
a622ab72	138	sta->ampdu_mlme.tid_tx[i] ?
386aa23d	139	skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
e0b20f1c	140	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d JB	141	}
386aa23d JB	142	spin_unlock_bh(&sta->lock);
eb2ba62e RR	143
	144	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	145	}
a75b4363 JB	146
	147	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	148	size_t count, loff_t *ppos)
	149	{
	150	char _buf[12], *buf = _buf;
	151	struct sta_info *sta = file->private_data;
	152	bool start, tx;
	153	unsigned long tid;
	154	int ret;
	155
	156	if (count > sizeof(_buf))
	157	return -EINVAL;
	158
	159	if (copy_from_user(buf, userbuf, count))
	160	return -EFAULT;
	161
	162	buf[sizeof(_buf) - 1] = '\0';
	163
	164	if (strncmp(buf, "tx ", 3) == 0) {
	165	buf += 3;
	166	tx = true;
	167	} else if (strncmp(buf, "rx ", 3) == 0) {
	168	buf += 3;
	169	tx = false;
	170	} else
	171	return -EINVAL;
	172
	173	if (strncmp(buf, "start ", 6) == 0) {
	174	buf += 6;
	175	start = true;
	176	if (!tx)
	177	return -EINVAL;
	178	} else if (strncmp(buf, "stop ", 5) == 0) {
	179	buf += 5;
	180	start = false;
	181	} else
	182	return -EINVAL;
	183
	184	tid = simple_strtoul(buf, NULL, 0);
	185
	186	if (tid >= STA_TID_NUM)
	187	return -EINVAL;
	188
	189	if (tx) {
	190	if (start)
	191	ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
	192	else
6a8579d0	193	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	194	} else {
53f73c09 JB	195	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	196	3, true);
a75b4363 JB	197	ret = 0;
	198	}
	199
	200	return ret ?: count;
	201	}
	202	STA_OPS_RW(agg_status);
eb2ba62e	203
64491f0e JB	204	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	205	size_t count, loff_t *ppos)
	206	{
7db94e21 LR	207	#define PRINT_HT_CAP(_cond, _str) \
	208	do { \
	209	if (_cond) \
	210	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	211	} while (0)
4c82bf8e	212	char buf[512], *p = buf;
64491f0e JB	213	int i;
	214	struct sta_info *sta = file->private_data;
	215	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	216
	217	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	218	htc->ht_supported ? "" : "not ");
	219	if (htc->ht_supported) {
cb136f54	220	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	221
c15cf5fc	222	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	223	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	224	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	225
	226	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	227	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	228	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	229
	230	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	231	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	232	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	233	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	234
	235	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	236	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	237	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	238	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	239
	240	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	241
	242	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
	243	"3839 bytes");
	244	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
	245	"7935 bytes");
	246
	247	/*
	248	* For beacons and probe response this would mean the BSS
	249	* does or does not allow the usage of DSSS/CCK HT40.
	250	* Otherwise it means the STA does or does not use
	251	* DSSS/CCK HT40.
	252	*/
	253	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	254	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	255
	256	/* BIT(13) is reserved */
	257
	258	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	259
	260	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	261
64491f0e JB	262	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	263	htc->ampdu_factor, htc->ampdu_density);
	264	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	265
64491f0e JB	266	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	267	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	268	htc->mcs.rx_mask[i]);
9da3e068 LR	269	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	270
	271	/* If not set this is meaningless */
	272	if (le16_to_cpu(htc->mcs.rx_highest)) {
	273	p += scnprintf(p, sizeof(buf)+buf-p,
	274	"MCS rx highest: %d Mbps\n",
	275	le16_to_cpu(htc->mcs.rx_highest));
	276	}
	277
64491f0e JB	278	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	279	htc->mcs.tx_params);
	280	}
	281
	282	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	283	}
	284	STA_OPS(ht_capa);
	285
e9f207f0	286	#define DEBUGFS_ADD(name) \
7bcfaf2f	287	debugfs_create_file(#name, 0400, \
e9f207f0 JB	288	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	289
2826bcd8 FF	290	#define DEBUGFS_ADD_COUNTER(name, field) \
	291	if (sizeof(sta->field) == sizeof(u32)) \
	292	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	293	(u32 *) &sta->field); \
	294	else \
	295	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	296	(u64 *) &sta->field);
e9f207f0 JB	297
	298	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	299	{
295bafb4	300	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	301	u8 mac[3*ETH_ALEN];
e9f207f0	302
63044e9f JB	303	sta->debugfs.add_has_run = true;
63044e9f JB	304
e9f207f0 JB	305	if (!stations_dir)
	306	return;
	307
0c68ae26	308	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	309
63044e9f JB	310	/*
	311	* This might fail due to a race condition:
	312	* When mac80211 unlinks a station, the debugfs entries
	313	* remain, but it is already possible to link a new
	314	* station with the same address which triggers adding
	315	* it to debugfs; therefore, if the old station isn't
	316	* destroyed quickly enough the old station's debugfs
	317	* dir might still be around.
	318	*/
0795af57	319	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	320	if (!sta->debugfs.dir)
	321	return;
	322
	323	DEBUGFS_ADD(flags);
	324	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0 JB	325	DEBUGFS_ADD(inactive_ms);
e9f207f0 JB	326	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	327	DEBUGFS_ADD(agg_status);
386aa23d	328	DEBUGFS_ADD(dev);
386aa23d	329	DEBUGFS_ADD(last_signal);
64491f0e	330	DEBUGFS_ADD(ht_capa);
2826bcd8 FF	331
	332	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
	333	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
	334	DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
	335	DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
	336	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	337	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	338	DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
	339	DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
	340	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
	341	DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
	342	DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
	343	DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
e9f207f0 JB	344	}
	345
	346	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	347	{
7bcfaf2f	348	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	349	sta->debugfs.dir = NULL;
e9f207f0 JB	350	}