[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);
STA_FILE(last_ack_signal, last_ack_signal, 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(last_ack_signal);

	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_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	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);
db94357d	53	STA_FILE(last_ack_signal, last_ack_signal, D);
e9f207f0 JB	54
	55	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	56	size_t count, loff_t *ppos)
	57	{
5bade101	58	char buf[121];
e9f207f0	59	struct sta_info *sta = file->private_data;
c2c98fde	60
5bade101 JB	61	#define TEST(flg) \
	62	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
	63
	64	int res = scnprintf(buf, sizeof(buf),
a7a6bdd0	65	"%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	66	TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
5bade101 JB	67	TEST(PS_DRIVER), TEST(AUTHORIZED),
fb4431bf	68	TEST(SHORT_PREAMBLE),
a74a8c84 JB	69	sta->sta.wme ? "WME\n" : "",
a74a8c84 JB	70	TEST(WDS), TEST(CLEAR_PS_FILT),
5bade101 JB	71	TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
5bade101 JB	72	TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
9041c1fa	73	TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR),
a7a6bdd0 AN	74	TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
	75	TEST(4ADDR_EVENT), TEST(INSERTED),
	76	TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
	77	TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
5bade101	78	#undef TEST
e9f207f0 JB	79	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	80	}
	81	STA_OPS(flags);
	82
	83	static ssize_t sta_num_ps_buf_frames_read(struct file *file,
	84	char __user *userbuf,
	85	size_t count, loff_t *ppos)
	86	{
e9f207f0	87	struct sta_info *sta = file->private_data;
948d887d JB	88	char buf[17IEEE80211_NUM_ACS], p = buf;
	89	int ac;
	90
	91	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
	92	p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
	93	skb_queue_len(&sta->ps_tx_buf[ac]) +
	94	skb_queue_len(&sta->tx_filtered[ac]));
	95	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
e9f207f0 JB	96	}
	97	STA_OPS(num_ps_buf_frames);
	98
e9f207f0 JB	99	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	100	size_t count, loff_t *ppos)
	101	{
5a306f58	102	char buf[15IEEE80211_NUM_TIDS], p = buf;
e9f207f0 JB	103	int i;
e9f207f0 JB	104	struct sta_info *sta = file->private_data;
5a306f58	105	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0	106	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	107	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	108	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	109	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	110	}
	111	STA_OPS(last_seq_ctrl);
	112
eb2ba62e RR	113	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	114	size_t count, loff_t *ppos)
	115	{
5a306f58	116	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
eb2ba62e RR	117	int i;
eb2ba62e RR	118	struct sta_info *sta = file->private_data;
dd318575 JB	119	struct tid_ampdu_rx *tid_rx;
	120	struct tid_ampdu_tx *tid_tx;
	121
	122	rcu_read_lock();
eb2ba62e	123
e0b20f1c	124	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	125	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c	126	p += scnprintf(p, sizeof(buf) + buf - p,
14b058bb	127	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
dd318575	128
5a306f58	129	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
dd318575 JB	130	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
	131	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
	132
e0b20f1c	133	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
dd318575	134	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
e0b20f1c	135	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	136	tid_rx ? tid_rx->dialog_token : 0);
e0b20f1c	137	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
dd318575	138	tid_rx ? tid_rx->ssn : 0);
386aa23d	139
dd318575	140	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
e0b20f1c	141	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
dd318575	142	tid_tx ? tid_tx->dialog_token : 0);
e0b20f1c	143	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
dd318575	144	tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
e0b20f1c	145	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d	146	}
dd318575	147	rcu_read_unlock();
eb2ba62e RR	148
	149	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	150	}
a75b4363 JB	151
	152	static ssize_t sta_agg_status_write(struct file file, const char __user userbuf,
	153	size_t count, loff_t *ppos)
	154	{
c4d2ffac	155	char _buf[12] = {}, *buf = _buf;
a75b4363 JB	156	struct sta_info *sta = file->private_data;
	157	bool start, tx;
	158	unsigned long tid;
	159	int ret;
	160
	161	if (count > sizeof(_buf))
	162	return -EINVAL;
	163
	164	if (copy_from_user(buf, userbuf, count))
	165	return -EFAULT;
	166
	167	buf[sizeof(_buf) - 1] = '\0';
	168
	169	if (strncmp(buf, "tx ", 3) == 0) {
	170	buf += 3;
	171	tx = true;
	172	} else if (strncmp(buf, "rx ", 3) == 0) {
	173	buf += 3;
	174	tx = false;
	175	} else
	176	return -EINVAL;
	177
	178	if (strncmp(buf, "start ", 6) == 0) {
	179	buf += 6;
	180	start = true;
	181	if (!tx)
	182	return -EINVAL;
	183	} else if (strncmp(buf, "stop ", 5) == 0) {
	184	buf += 5;
	185	start = false;
	186	} else
	187	return -EINVAL;
	188
4b5511eb AP	189	ret = kstrtoul(buf, 0, &tid);
	190	if (ret)
	191	return ret;
a75b4363	192
5a306f58	193	if (tid >= IEEE80211_NUM_TIDS)
a75b4363 JB	194	return -EINVAL;
	195
	196	if (tx) {
	197	if (start)
bd2ce6e4	198	ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
a75b4363	199	else
6a8579d0	200	ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
a75b4363	201	} else {
53f73c09 JB	202	__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
53f73c09 JB	203	3, true);
a75b4363 JB	204	ret = 0;
	205	}
	206
	207	return ret ?: count;
	208	}
	209	STA_OPS_RW(agg_status);
eb2ba62e	210
64491f0e JB	211	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	212	size_t count, loff_t *ppos)
	213	{
7db94e21 LR	214	#define PRINT_HT_CAP(_cond, _str) \
	215	do { \
	216	if (_cond) \
	217	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	218	} while (0)
4c82bf8e	219	char buf[512], *p = buf;
64491f0e JB	220	int i;
	221	struct sta_info *sta = file->private_data;
	222	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	223
	224	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	225	htc->ht_supported ? "" : "not ");
	226	if (htc->ht_supported) {
cb136f54	227	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21	228
c15cf5fc	229	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
7db94e21 LR	230	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	231	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	232
	233	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	234	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	235	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	236
	237	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	238	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	239	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	240	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	241
	242	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	243	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	244	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	245	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	246
	247	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	248
7db94e21	249	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
904603f9 BG	250	"3839 bytes");
904603f9 BG	251	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
7db94e21 LR	252	"7935 bytes");
	253
	254	/*
	255	* For beacons and probe response this would mean the BSS
	256	* does or does not allow the usage of DSSS/CCK HT40.
	257	* Otherwise it means the STA does or does not use
	258	* DSSS/CCK HT40.
	259	*/
	260	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	261	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	262
	263	/* BIT(13) is reserved */
	264
	265	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	266
	267	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	268
64491f0e JB	269	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	270	htc->ampdu_factor, htc->ampdu_density);
	271	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	272
64491f0e JB	273	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	274	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	275	htc->mcs.rx_mask[i]);
9da3e068 LR	276	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	277
	278	/* If not set this is meaningless */
	279	if (le16_to_cpu(htc->mcs.rx_highest)) {
	280	p += scnprintf(p, sizeof(buf)+buf-p,
	281	"MCS rx highest: %d Mbps\n",
	282	le16_to_cpu(htc->mcs.rx_highest));
	283	}
	284
64491f0e JB	285	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	286	htc->mcs.tx_params);
	287	}
	288
	289	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	290	}
	291	STA_OPS(ht_capa);
	292
90fcba65 JB	293	static ssize_t sta_vht_capa_read(struct file file, char __user userbuf,
	294	size_t count, loff_t *ppos)
	295	{
	296	char buf[128], *p = buf;
	297	struct sta_info *sta = file->private_data;
	298	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
	299
	300	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
	301	vhtc->vht_supported ? "" : "not ");
	302	if (vhtc->vht_supported) {
	303	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
	304
	305	p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
	306	le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
	307	if (vhtc->vht_mcs.rx_highest)
	308	p += scnprintf(p, sizeof(buf)+buf-p,
	309	"MCS RX highest: %d Mbps\n",
	310	le16_to_cpu(vhtc->vht_mcs.rx_highest));
	311	p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
	312	le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
	313	if (vhtc->vht_mcs.tx_highest)
	314	p += scnprintf(p, sizeof(buf)+buf-p,
	315	"MCS TX highest: %d Mbps\n",
	316	le16_to_cpu(vhtc->vht_mcs.tx_highest));
	317	}
	318
	319	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	320	}
	321	STA_OPS(vht_capa);
	322
1f2e651c	323
e9f207f0	324	#define DEBUGFS_ADD(name) \
7bcfaf2f	325	debugfs_create_file(#name, 0400, \
e9f207f0 JB	326	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	327
2826bcd8 FF	328	#define DEBUGFS_ADD_COUNTER(name, field) \
	329	if (sizeof(sta->field) == sizeof(u32)) \
	330	debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
	331	(u32 *) &sta->field); \
	332	else \
	333	debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
	334	(u64 *) &sta->field);
e9f207f0 JB	335
	336	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	337	{
77d2ece6 SM	338	struct ieee80211_local *local = sta->local;
77d2ece6 SM	339	struct ieee80211_sub_if_data *sdata = sta->sdata;
295bafb4	340	struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
0c68ae26	341	u8 mac[3*ETH_ALEN];
e9f207f0	342
63044e9f JB	343	sta->debugfs.add_has_run = true;
63044e9f JB	344
e9f207f0 JB	345	if (!stations_dir)
	346	return;
	347
0c68ae26	348	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	349
63044e9f JB	350	/*
	351	* This might fail due to a race condition:
	352	* When mac80211 unlinks a station, the debugfs entries
	353	* remain, but it is already possible to link a new
	354	* station with the same address which triggers adding
	355	* it to debugfs; therefore, if the old station isn't
	356	* destroyed quickly enough the old station's debugfs
	357	* dir might still be around.
	358	*/
0795af57	359	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	360	if (!sta->debugfs.dir)
	361	return;
	362
	363	DEBUGFS_ADD(flags);
	364	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0	365	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	366	DEBUGFS_ADD(agg_status);
64491f0e	367	DEBUGFS_ADD(ht_capa);
90fcba65	368	DEBUGFS_ADD(vht_capa);
db94357d	369	DEBUGFS_ADD(last_ack_signal);
2826bcd8	370
2826bcd8 FF	371	DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
2826bcd8 FF	372	DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
2826bcd8	373	DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
77d2ece6	374
7cf1f14e JB	375	if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
	376	debugfs_create_x32("driver_buffered_tids", 0400,
	377	sta->debugfs.dir,
	378	(u32 *)&sta->driver_buffered_tids);
	379	else
	380	debugfs_create_x64("driver_buffered_tids", 0400,
	381	sta->debugfs.dir,
	382	(u64 *)&sta->driver_buffered_tids);
	383
77d2ece6	384	drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
e9f207f0 JB	385	}
	386
	387	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	388	{
77d2ece6 SM	389	struct ieee80211_local *local = sta->local;
	390	struct ieee80211_sub_if_data *sdata = sta->sdata;
	391
	392	drv_sta_remove_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
7bcfaf2f	393	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	394	sta->debugfs.dir = NULL;
e9f207f0 JB	395	}