[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>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 * Copyright(c) 2016 Intel Deutschland 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_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);

static const char * const sta_flag_names[] = {
#define FLAG(F) [WLAN_STA_##F] = #F
	FLAG(AUTH),
	FLAG(ASSOC),
	FLAG(PS_STA),
	FLAG(AUTHORIZED),
	FLAG(SHORT_PREAMBLE),
	FLAG(WDS),
	FLAG(CLEAR_PS_FILT),
	FLAG(MFP),
	FLAG(BLOCK_BA),
	FLAG(PS_DRIVER),
	FLAG(PSPOLL),
	FLAG(TDLS_PEER),
	FLAG(TDLS_PEER_AUTH),
	FLAG(TDLS_INITIATOR),
	FLAG(TDLS_CHAN_SWITCH),
	FLAG(TDLS_OFF_CHANNEL),
	FLAG(TDLS_WIDER_BW),
	FLAG(UAPSD),
	FLAG(SP),
	FLAG(4ADDR_EVENT),
	FLAG(INSERTED),
	FLAG(RATE_CONTROL),
	FLAG(TOFFSET_KNOWN),
	FLAG(MPSP_OWNER),
	FLAG(MPSP_RECIPIENT),
	FLAG(PS_DELIVER),
#undef FLAG
};

static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
			      size_t count, loff_t *ppos)
{
	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
	char *end = buf + sizeof(buf) - 1;
	struct sta_info *sta = file->private_data;
	unsigned int flg;

	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);

	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
		if (test_sta_flag(sta, flg))
			pos += scnprintf(pos, end - pos, "%s\n",
					 sta_flag_names[flg]);
	}

	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
}
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_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[25] = {}, *buf = _buf;
	struct sta_info *sta = file->private_data;
	bool start, tx;
	unsigned long tid;
	char *pos;
	int ret, timeout = 5000;

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

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

	buf[sizeof(_buf) - 1] = '\0';
	pos = buf;
	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;

	if (!strcmp(buf, "tx"))
		tx = true;
	else if (!strcmp(buf, "rx"))
		tx = false;
	else
		return -EINVAL;

	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;
	if (!strcmp(buf, "start")) {
		start = true;
		if (!tx)
			return -EINVAL;
	} else if (!strcmp(buf, "stop")) {
		start = false;
	} else {
		return -EINVAL;
	}

	buf = strsep(&pos, " ");
	if (!buf)
		return -EINVAL;
	if (sscanf(buf, "timeout=%d", &timeout) == 1) {
		buf = strsep(&pos, " ");
		if (!buf || !tx || !start)
			return -EINVAL;
	}

	ret = kstrtoul(buf, 0, &tid);
	if (ret || tid >= IEEE80211_NUM_TIDS)
		return -EINVAL;

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


#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];

	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(last_seq_ctrl);
	DEBUGFS_ADD(agg_status);
	DEBUGFS_ADD(ht_capa);
	DEBUGFS_ADD(vht_capa);

	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
	DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);

	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
1e0bbeba	6	* Copyright(c) 2016 Intel Deutschland GmbH
e9f207f0 JB	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/debugfs.h>
	14	#include <linux/ieee80211.h>
	15	#include "ieee80211_i.h"
	16	#include "debugfs.h"
	17	#include "debugfs_sta.h"
	18	#include "sta_info.h"
77d2ece6	19	#include "driver-ops.h"
e9f207f0 JB	20
	21	/* sta attributtes */
	22
07caf9d6	23	#define STA_READ(name, field, format_string) \
e9f207f0 JB	24	static ssize_t sta_ ##name## _read(struct file *file, \
	25	char __user *userbuf, \
	26	size_t count, loff_t *ppos) \
	27	{ \
e9f207f0	28	struct sta_info *sta = file->private_data; \
07caf9d6 EP	29	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	30	format_string, sta->field); \
e9f207f0	31	}
07caf9d6	32	#define STA_READ_D(name, field) STA_READ(name, field, "%d\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);
e9f207f0	54
c84387d2 JB	55	static const char * const sta_flag_names[] = {
	56	#define FLAG(F) [WLAN_STA_##F] = #F
	57	FLAG(AUTH),
	58	FLAG(ASSOC),
	59	FLAG(PS_STA),
	60	FLAG(AUTHORIZED),
	61	FLAG(SHORT_PREAMBLE),
	62	FLAG(WDS),
	63	FLAG(CLEAR_PS_FILT),
	64	FLAG(MFP),
	65	FLAG(BLOCK_BA),
	66	FLAG(PS_DRIVER),
	67	FLAG(PSPOLL),
	68	FLAG(TDLS_PEER),
	69	FLAG(TDLS_PEER_AUTH),
	70	FLAG(TDLS_INITIATOR),
	71	FLAG(TDLS_CHAN_SWITCH),
	72	FLAG(TDLS_OFF_CHANNEL),
	73	FLAG(TDLS_WIDER_BW),
	74	FLAG(UAPSD),
	75	FLAG(SP),
	76	FLAG(4ADDR_EVENT),
	77	FLAG(INSERTED),
	78	FLAG(RATE_CONTROL),
	79	FLAG(TOFFSET_KNOWN),
	80	FLAG(MPSP_OWNER),
	81	FLAG(MPSP_RECIPIENT),
	82	FLAG(PS_DELIVER),
	83	#undef FLAG
	84	};
	85
e9f207f0 JB	86	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	87	size_t count, loff_t *ppos)
	88	{
c84387d2 JB	89	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
c84387d2 JB	90	char *end = buf + sizeof(buf) - 1;
e9f207f0	91	struct sta_info *sta = file->private_data;
c84387d2 JB	92	unsigned int flg;
	93
	94	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
c2c98fde	95
c84387d2 JB	96	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
	97	if (test_sta_flag(sta, flg))
	98	pos += scnprintf(pos, end - pos, "%s\n",
	99	sta_flag_names[flg]);
	100	}
5bade101	101
c84387d2	102	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
e9f207f0 JB	103	}
	104	STA_OPS(flags);
	105
	106	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	107	char __user *userbuf,
	108	size_t count, loff_t *ppos)
	109	{
e9f207f0	110	struct sta_info *sta = file->private_data;
948d887d JB	111	char buf[17IEEE80211_NUM_ACS], p = buf;
	112	int ac;
	113
	114	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	115	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	116	skb_queue_len(&sta->ps_tx_buf[ac]) +
	117	skb_queue_len(&sta->tx_filtered[ac]));
	118	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	119	}
	120	STA_OPS(num_ps_buf_frames);
	121
e9f207f0 JB	122	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	123	size_t count, loff_t *ppos)
	124	{
5a306f58	125	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	126	int i;
e9f207f0 JB	127	struct sta_info *sta = file->private_data;
5a306f58	128	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	129	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	130	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	131	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	132	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	133	}
	134	STA_OPS(last_seq_ctrl);
	135
eb2ba62e RR	136	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	137	size_t count, loff_t *ppos)
	138	{
5a306f58	139	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	140	int i;
eb2ba62e RR	141	struct sta_info *sta = file->private_data;
dd318575 JB	142	struct tid_ampdu_rx *tid_rx;
	143	struct tid_ampdu_tx *tid_tx;
	144
	145	rcu_read_lock();
eb2ba62e	146
e0b20f1c	147	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	148	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	149	p += scnprintf(p, sizeof(buf) + buf - p,
14b058bb	150	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	151
5a306f58	152	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	153	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	154	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	155
e0b20f1c	156	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	157	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	158	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	159	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	160	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	161	tid_rx ? tid_rx->ssn : 0);
386aa23d	162
dd318575	163	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	164	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	165	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	166	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	167	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	168	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	169	}
dd318575	170	rcu_read_unlock();
eb2ba62e RR	171
	172	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	173	}
a75b4363 JB	174
	175	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	176	size_t count, loff_t *ppos)
	177	{
1e0bbeba	178	char _buf[25] = {}, *buf = _buf;
a75b4363 JB	179	struct sta_info *sta = file->private_data;
	180	bool start, tx;
	181	unsigned long tid;
1e0bbeba SS	182	char *pos;
1e0bbeba SS	183	int ret, timeout = 5000;
a75b4363 JB	184
	185	if (count > sizeof(_buf))
	186	return -EINVAL;
	187
	188	if (copy_from_user(buf, userbuf, count))
	189	return -EFAULT;
	190
	191	buf[sizeof(_buf) - 1] = '\0';
1e0bbeba SS	192	pos = buf;
	193	buf = strsep(&pos, " ");
	194	if (!buf)
	195	return -EINVAL;
a75b4363	196
1e0bbeba	197	if (!strcmp(buf, "tx"))
a75b4363	198	tx = true;
1e0bbeba	199	else if (!strcmp(buf, "rx"))
a75b4363	200	tx = false;
1e0bbeba	201	else
a75b4363 JB	202	return -EINVAL;
a75b4363 JB	203
1e0bbeba SS	204	buf = strsep(&pos, " ");
	205	if (!buf)
	206	return -EINVAL;
	207	if (!strcmp(buf, "start")) {
a75b4363 JB	208	start = true;
	209	if (!tx)
	210	return -EINVAL;
1e0bbeba	211	} else if (!strcmp(buf, "stop")) {
a75b4363	212	start = false;
1e0bbeba	213	} else {
a75b4363	214	return -EINVAL;
1e0bbeba	215	}
a75b4363	216
1e0bbeba SS	217	buf = strsep(&pos, " ");
	218	if (!buf)
	219	return -EINVAL;
	220	if (sscanf(buf, "timeout=%d", &timeout) == 1) {
	221	buf = strsep(&pos, " ");
	222	if (!buf \|\| !tx \|\| !start)
	223	return -EINVAL;
	224	}
a75b4363	225
1e0bbeba SS	226	ret = kstrtoul(buf, 0, &tid);
1e0bbeba SS	227	if (ret \|\| tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	228	return -EINVAL;
	229
	230	if (tx) {
	231	if (start)
1e0bbeba SS	232	ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
1e0bbeba SS	233	timeout);
a75b4363	234	else
6a8579d0	235	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	236	} else {
53f73c09 JB	237	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	238	3, true);
a75b4363 JB	239	ret = 0;
	240	}
	241
	242	return ret ?: count;
	243	}
	244	STA_OPS_RW(agg_status);
eb2ba62e	245
64491f0e JB	246	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	247	size_t count, loff_t *ppos)
	248	{
7db94e21 LR	249	#define PRINT_HT_CAP(_cond, _str) \
	250	do { \
	251	if (_cond) \
	252	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	253	} while (0)
4c82bf8e	254	char buf[512], *p = buf;
64491f0e JB	255	int i;
	256	struct sta_info *sta = file->private_data;
	257	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	258
	259	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	260	htc->ht_supported ? "" : "not ");
	261	if (htc->ht_supported) {
cb136f54	262	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	263
c15cf5fc	264	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	265	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	266	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	267
	268	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	269	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	270	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	271
	272	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	273	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	274	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	275	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	276
	277	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	278	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	279	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	280	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	281
	282	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	283
7db94e21	284	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	285	"3839 bytes");
904603f9 BG	286	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	287	"7935 bytes");
	288
	289	/*
	290	* For beacons and probe response this would mean the BSS
	291	* does or does not allow the usage of DSSS/CCK HT40.
	292	* Otherwise it means the STA does or does not use
	293	* DSSS/CCK HT40.
	294	*/
	295	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	296	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	297
	298	/* BIT(13) is reserved */
	299
	300	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	301
	302	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	303
64491f0e JB	304	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	305	htc->ampdu_factor, htc->ampdu_density);
	306	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	307
64491f0e JB	308	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	309	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	310	htc->mcs.rx_mask[i]);
9da3e068 LR	311	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	312
	313	/* If not set this is meaningless */
	314	if (le16_to_cpu(htc->mcs.rx_highest)) {
	315	p += scnprintf(p, sizeof(buf)+buf-p,
	316	"MCS rx highest: %d Mbps\n",
	317	le16_to_cpu(htc->mcs.rx_highest));
	318	}
	319
64491f0e JB	320	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	321	htc->mcs.tx_params);
	322	}
	323
	324	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	325	}
	326	STA_OPS(ht_capa);
	327
90fcba65 JB	328	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	329	size_t count, loff_t *ppos)
	330	{
	331	char buf[128], *p = buf;
	332	struct sta_info *sta = file->private_data;
	333	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	334
	335	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	336	vhtc->vht_supported ? "" : "not ");
	337	if (vhtc->vht_supported) {
	338	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
	339
	340	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	341	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	342	if (vhtc->vht_mcs.rx_highest)
	343	p += scnprintf(p, sizeof(buf)+buf-p,
	344	"MCS RX highest: %d Mbps\n",
	345	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	346	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	347	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	348	if (vhtc->vht_mcs.tx_highest)
	349	p += scnprintf(p, sizeof(buf)+buf-p,
	350	"MCS TX highest: %d Mbps\n",
	351	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	352	}
	353
	354	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	355	}
	356	STA_OPS(vht_capa);
	357
1f2e651c	358
e9f207f0	359	#define DEBUGFS_ADD(name) \
7bcfaf2f	360	debugfs_create_file(#name, 0400, \
fc4a25c5	361	sta->debugfs_dir, sta, &sta_ ##name## _ops);
e9f207f0	362
2826bcd8 FF	363	#define DEBUGFS_ADD_COUNTER(name, field) \
2826bcd8 FF	364	if (sizeof(sta->field) == sizeof(u32)) \
fc4a25c5	365	debugfs_create_u32(#name, 0400, sta->debugfs_dir, \
2826bcd8 FF	366	(u32 *) &sta->field); \
2826bcd8 FF	367	else \
fc4a25c5	368	debugfs_create_u64(#name, 0400, sta->debugfs_dir, \
2826bcd8	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 JB	377
	378	if (!stations_dir)
	379	return;
	380
0c68ae26	381	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	382
63044e9f JB	383	/*
	384	* This might fail due to a race condition:
	385	* When mac80211 unlinks a station, the debugfs entries
	386	* remain, but it is already possible to link a new
	387	* station with the same address which triggers adding
	388	* it to debugfs; therefore, if the old station isn't
	389	* destroyed quickly enough the old station's debugfs
	390	* dir might still be around.
	391	*/
fc4a25c5 JB	392	sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
fc4a25c5 JB	393	if (!sta->debugfs_dir)
e9f207f0 JB	394	return;
	395
	396	DEBUGFS_ADD(flags);
	397	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	398	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	399	DEBUGFS_ADD(agg_status);
64491f0e	400	DEBUGFS_ADD(ht_capa);
90fcba65	401	DEBUGFS_ADD(vht_capa);
2826bcd8	402
e5a9f8d0 JB	403	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
	404	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
	405	DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);
77d2ece6	406
7cf1f14e JB	407	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
7cf1f14e JB	408	debugfs_create_x32("driver_buffered_tids", 0400,
fc4a25c5	409	sta->debugfs_dir,
7cf1f14e JB	410	(u32 *)&sta->driver_buffered_tids);
	411	else
	412	debugfs_create_x64("driver_buffered_tids", 0400,
fc4a25c5	413	sta->debugfs_dir,
7cf1f14e JB	414	(u64 *)&sta->driver_buffered_tids);
7cf1f14e JB	415
fc4a25c5	416	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
e9f207f0 JB	417	}
	418
	419	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	420	{
77d2ece6 SM	421	struct ieee80211_local *local = sta->local;
	422	struct ieee80211_sub_if_data *sdata = sta->sdata;
	423
fc4a25c5 JB	424	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
	425	debugfs_remove_recursive(sta->debugfs_dir);
	426	sta->debugfs_dir = NULL;
e9f207f0	427	}