[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
 *
 * 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 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_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);


#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(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
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	31	#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
e9f207f0	32
e9f207f0 JB	33	#define STA_OPS(name) \
	34	static const struct file_operations sta_ ##name## _ops = { \
	35	.read = sta_##name##_read, \
234e3405	36	.open = simple_open, \
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, \
234e3405	44	.open = simple_open, \
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);
e9f207f0 JB	53
	54	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	55	size_t count, loff_t *ppos)
	56	{
5bade101	57	char buf[121];
e9f207f0	58	struct sta_info *sta = file->private_data;
c2c98fde	59
5bade101 JB	60	#define TEST(flg) \
	61	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	62
	63	int res = scnprintf(buf, sizeof(buf),
a7a6bdd0	64	"%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	65	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
5bade101 JB	66	TEST(PS_DRIVER), TEST(AUTHORIZED),
fb4431bf	67	TEST(SHORT_PREAMBLE),
a74a8c84 JB	68	sta->sta.wme ? "WME\n" : "",
a74a8c84 JB	69	TEST(WDS), TEST(CLEAR_PS_FILT),
5bade101 JB	70	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
5bade101 JB	71	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
9041c1fa	72	TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR),
a7a6bdd0 AN	73	TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
	74	TEST(4ADDR_EVENT), TEST(INSERTED),
	75	TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
	76	TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
5bade101	77	#undef TEST
e9f207f0 JB	78	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	79	}
	80	STA_OPS(flags);
	81
	82	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	83	char __user *userbuf,
	84	size_t count, loff_t *ppos)
	85	{
e9f207f0	86	struct sta_info *sta = file->private_data;
948d887d JB	87	char buf[17IEEE80211_NUM_ACS], p = buf;
	88	int ac;
	89
	90	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	91	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	92	skb_queue_len(&sta->ps_tx_buf[ac]) +
	93	skb_queue_len(&sta->tx_filtered[ac]));
	94	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	95	}
	96	STA_OPS(num_ps_buf_frames);
	97
e9f207f0 JB	98	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	99	size_t count, loff_t *ppos)
	100	{
5a306f58	101	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	102	int i;
e9f207f0 JB	103	struct sta_info *sta = file->private_data;
5a306f58	104	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	105	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	106	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	107	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	108	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	109	}
	110	STA_OPS(last_seq_ctrl);
	111
eb2ba62e RR	112	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	113	size_t count, loff_t *ppos)
	114	{
5a306f58	115	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	116	int i;
eb2ba62e RR	117	struct sta_info *sta = file->private_data;
dd318575 JB	118	struct tid_ampdu_rx *tid_rx;
	119	struct tid_ampdu_tx *tid_tx;
	120
	121	rcu_read_lock();
eb2ba62e	122
e0b20f1c	123	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	124	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	125	p += scnprintf(p, sizeof(buf) + buf - p,
14b058bb	126	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	127
5a306f58	128	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	129	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	130	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	131
e0b20f1c	132	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	133	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	134	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	135	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	136	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	137	tid_rx ? tid_rx->ssn : 0);
386aa23d	138
dd318575	139	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	140	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	141	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	142	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	143	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	144	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	145	}
dd318575	146	rcu_read_unlock();
eb2ba62e RR	147
	148	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	149	}
a75b4363 JB	150
	151	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	152	size_t count, loff_t *ppos)
	153	{
c4d2ffac	154	char _buf[12] = {}, *buf = _buf;
a75b4363 JB	155	struct sta_info *sta = file->private_data;
	156	bool start, tx;
	157	unsigned long tid;
	158	int ret;
	159
	160	if (count > sizeof(_buf))
	161	return -EINVAL;
	162
	163	if (copy_from_user(buf, userbuf, count))
	164	return -EFAULT;
	165
	166	buf[sizeof(_buf) - 1] = '\0';
	167
	168	if (strncmp(buf, "tx ", 3) == 0) {
	169	buf += 3;
	170	tx = true;
	171	} else if (strncmp(buf, "rx ", 3) == 0) {
	172	buf += 3;
	173	tx = false;
	174	} else
	175	return -EINVAL;
	176
	177	if (strncmp(buf, "start ", 6) == 0) {
	178	buf += 6;
	179	start = true;
	180	if (!tx)
	181	return -EINVAL;
	182	} else if (strncmp(buf, "stop ", 5) == 0) {
	183	buf += 5;
	184	start = false;
	185	} else
	186	return -EINVAL;
	187
4b5511eb AP	188	ret = kstrtoul(buf, 0, &tid);
	189	if (ret)
	190	return ret;
a75b4363	191
5a306f58	192	if (tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	193	return -EINVAL;
	194
	195	if (tx) {
	196	if (start)
bd2ce6e4	197	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	198	else
6a8579d0	199	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	200	} else {
53f73c09 JB	201	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	202	3, true);
a75b4363 JB	203	ret = 0;
	204	}
	205
	206	return ret ?: count;
	207	}
	208	STA_OPS_RW(agg_status);
eb2ba62e	209
64491f0e JB	210	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	211	size_t count, loff_t *ppos)
	212	{
7db94e21 LR	213	#define PRINT_HT_CAP(_cond, _str) \
	214	do { \
	215	if (_cond) \
	216	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	217	} while (0)
4c82bf8e	218	char buf[512], *p = buf;
64491f0e JB	219	int i;
	220	struct sta_info *sta = file->private_data;
	221	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	222
	223	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	224	htc->ht_supported ? "" : "not ");
	225	if (htc->ht_supported) {
cb136f54	226	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	227
c15cf5fc	228	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	229	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	230	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	231
	232	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	233	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	234	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	235
	236	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	237	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	238	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	239	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	240
	241	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	242	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	243	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	244	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	245
	246	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	247
7db94e21	248	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	249	"3839 bytes");
904603f9 BG	250	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	251	"7935 bytes");
	252
	253	/*
	254	* For beacons and probe response this would mean the BSS
	255	* does or does not allow the usage of DSSS/CCK HT40.
	256	* Otherwise it means the STA does or does not use
	257	* DSSS/CCK HT40.
	258	*/
	259	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	260	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	261
	262	/* BIT(13) is reserved */
	263
	264	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	265
	266	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	267
64491f0e JB	268	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	269	htc->ampdu_factor, htc->ampdu_density);
	270	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	271
64491f0e JB	272	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	273	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	274	htc->mcs.rx_mask[i]);
9da3e068 LR	275	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	276
	277	/* If not set this is meaningless */
	278	if (le16_to_cpu(htc->mcs.rx_highest)) {
	279	p += scnprintf(p, sizeof(buf)+buf-p,
	280	"MCS rx highest: %d Mbps\n",
	281	le16_to_cpu(htc->mcs.rx_highest));
	282	}
	283
64491f0e JB	284	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	285	htc->mcs.tx_params);
	286	}
	287
	288	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	289	}
	290	STA_OPS(ht_capa);
	291
90fcba65 JB	292	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	293	size_t count, loff_t *ppos)
	294	{
	295	char buf[128], *p = buf;
	296	struct sta_info *sta = file->private_data;
	297	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	298
	299	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	300	vhtc->vht_supported ? "" : "not ");
	301	if (vhtc->vht_supported) {
	302	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
	303
	304	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	305	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	306	if (vhtc->vht_mcs.rx_highest)
	307	p += scnprintf(p, sizeof(buf)+buf-p,
	308	"MCS RX highest: %d Mbps\n",
	309	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	310	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	311	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	312	if (vhtc->vht_mcs.tx_highest)
	313	p += scnprintf(p, sizeof(buf)+buf-p,
	314	"MCS TX highest: %d Mbps\n",
	315	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	316	}
	317
	318	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	319	}
	320	STA_OPS(vht_capa);
	321
1f2e651c	322
e9f207f0	323	#define DEBUGFS_ADD(name) \
7bcfaf2f	324	debugfs_create_file(#name, 0400, \
e9f207f0 JB	325	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	326
2826bcd8 FF	327	#define DEBUGFS_ADD_COUNTER(name, field) \
	328	if (sizeof(sta->field) == sizeof(u32)) \
	329	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	330	(u32 *) &sta->field); \
	331	else \
	332	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	333	(u64 *) &sta->field);
e9f207f0 JB	334
	335	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	336	{
77d2ece6 SM	337	struct ieee80211_local *local = sta->local;
77d2ece6 SM	338	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	339	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	340	u8 mac[3*ETH_ALEN];
e9f207f0	341
63044e9f JB	342	sta->debugfs.add_has_run = true;
63044e9f JB	343
e9f207f0 JB	344	if (!stations_dir)
	345	return;
	346
0c68ae26	347	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	348
63044e9f JB	349	/*
	350	* This might fail due to a race condition:
	351	* When mac80211 unlinks a station, the debugfs entries
	352	* remain, but it is already possible to link a new
	353	* station with the same address which triggers adding
	354	* it to debugfs; therefore, if the old station isn't
	355	* destroyed quickly enough the old station's debugfs
	356	* dir might still be around.
	357	*/
0795af57	358	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	359	if (!sta->debugfs.dir)
	360	return;
	361
	362	DEBUGFS_ADD(flags);
	363	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	364	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	365	DEBUGFS_ADD(agg_status);
64491f0e	366	DEBUGFS_ADD(ht_capa);
90fcba65	367	DEBUGFS_ADD(vht_capa);
2826bcd8	368
e5a9f8d0 JB	369	DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
	370	DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
	371	DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);
77d2ece6	372
7cf1f14e JB	373	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
	374	debugfs_create_x32("driver_buffered_tids", 0400,
	375	sta->debugfs.dir,
	376	(u32 *)&sta->driver_buffered_tids);
	377	else
	378	debugfs_create_x64("driver_buffered_tids", 0400,
	379	sta->debugfs.dir,
	380	(u64 *)&sta->driver_buffered_tids);
	381
77d2ece6	382	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
e9f207f0 JB	383	}
	384
	385	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	386	{
77d2ece6 SM	387	struct ieee80211_local *local = sta->local;
	388	struct ieee80211_sub_if_data *sdata = sta->sdata;
	389
	390	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
7bcfaf2f	391	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	392	sta->debugfs.dir = NULL;
e9f207f0 JB	393	}