[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>
 *
 * 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, buflen, field, format_string)			\
static ssize_t sta_ ##name## _read(struct file *file,			\
				   char __user *userbuf,		\
				   size_t count, loff_t *ppos)		\
{									\
	int res;							\
	struct sta_info *sta = file->private_data;			\
	char buf[buflen];						\
	res = scnprintf(buf, buflen, format_string, sta->field);	\
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
}
#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")

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

#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(rx_packets, rx_packets, LU);
STA_FILE(tx_packets, tx_packets, LU);
STA_FILE(rx_bytes, rx_bytes, LU);
STA_FILE(tx_bytes, tx_bytes, LU);
STA_FILE(rx_duplicates, num_duplicates, LU);
STA_FILE(rx_fragments, rx_fragments, LU);
STA_FILE(rx_dropped, rx_dropped, LU);
STA_FILE(tx_fragments, tx_fragments, LU);
STA_FILE(tx_filtered, tx_filtered_count, LU);
STA_FILE(tx_retry_failed, tx_retry_failed, LU);
STA_FILE(tx_retry_count, tx_retry_count, LU);
STA_FILE(last_signal, last_signal, D);
STA_FILE(last_noise, last_noise, D);
STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);

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)
{
	char buf[20];
	struct sta_info *sta = file->private_data;
	int res = scnprintf(buf, sizeof(buf), "%u\n",
			    skb_queue_len(&sta->ps_tx_buf));
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
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)
{
	char buf[20];
	struct sta_info *sta = file->private_data;
	int res = scnprintf(buf, sizeof(buf), "%d\n",
			    jiffies_to_msecs(jiffies - sta->last_rx));
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
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[64 + 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\tDTKN\tSSN\t\tTX\tDTKN\tSSN\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_state_rx[i]);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
				sta->ampdu_mlme.tid_state_rx[i] ?
				sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
				sta->ampdu_mlme.tid_state_rx[i] ?
				sta->ampdu_mlme.tid_rx[i]->ssn : 0);

		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
				sta->ampdu_mlme.tid_state_tx[i]);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
				sta->ampdu_mlme.tid_state_tx[i] ?
				sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
				sta->ampdu_mlme.tid_state_tx[i] ?
				sta->ampdu_mlme.tid_tx[i]->ssn : 0);
		p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
				sta->ampdu_mlme.tid_state_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);
}
STA_OPS(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 LDCP");
		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);


void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
	struct dentry *stations_dir = sta->local->debugfs.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(rx_packets);
	DEBUGFS_ADD(tx_packets);
	DEBUGFS_ADD(rx_bytes);
	DEBUGFS_ADD(tx_bytes);
	DEBUGFS_ADD(rx_duplicates);
	DEBUGFS_ADD(rx_fragments);
	DEBUGFS_ADD(rx_dropped);
	DEBUGFS_ADD(tx_fragments);
	DEBUGFS_ADD(tx_filtered);
	DEBUGFS_ADD(tx_retry_failed);
	DEBUGFS_ADD(tx_retry_count);
	DEBUGFS_ADD(last_signal);
	DEBUGFS_ADD(last_noise);
	DEBUGFS_ADD(wep_weak_iv_count);
	DEBUGFS_ADD(ht_capa);
}

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
	20	#define STA_READ(name, buflen, field, format_string) \
	21	static ssize_t sta_ ##name## _read(struct file *file, \
	22	char __user *userbuf, \
	23	size_t count, loff_t *ppos) \
	24	{ \
	25	int res; \
	26	struct sta_info *sta = file->private_data; \
	27	char buf[buflen]; \
	28	res = scnprintf(buf, buflen, format_string, sta->field); \
	29	return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
	30	}
	31	#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
	32	#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
	33	#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
	34	#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
	35
e9f207f0 JB	36	#define STA_OPS(name) \
	37	static const struct file_operations sta_ ##name## _ops = { \
	38	.read = sta_##name##_read, \
	39	.open = mac80211_open_file_generic, \
	40	}
	41
	42	#define STA_FILE(name, field, format) \
	43	STA_READ_##format(name, field) \
	44	STA_OPS(name)
	45
17741cdc	46	STA_FILE(aid, sta.aid, D);
47846c9b	47	STA_FILE(dev, sdata->name, S);
e9f207f0 JB	48	STA_FILE(rx_packets, rx_packets, LU);
	49	STA_FILE(tx_packets, tx_packets, LU);
	50	STA_FILE(rx_bytes, rx_bytes, LU);
	51	STA_FILE(tx_bytes, tx_bytes, LU);
	52	STA_FILE(rx_duplicates, num_duplicates, LU);
	53	STA_FILE(rx_fragments, rx_fragments, LU);
	54	STA_FILE(rx_dropped, rx_dropped, LU);
	55	STA_FILE(tx_fragments, tx_fragments, LU);
	56	STA_FILE(tx_filtered, tx_filtered_count, LU);
e9f207f0 JB	57	STA_FILE(tx_retry_failed, tx_retry_failed, LU);
e9f207f0 JB	58	STA_FILE(tx_retry_count, tx_retry_count, LU);
e9f207f0 JB	59	STA_FILE(last_signal, last_signal, D);
e9f207f0 JB	60	STA_FILE(last_noise, last_noise, D);
693b1bbc	61	STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
e9f207f0 JB	62
	63	static ssize_t sta_flags_read(struct file file, char __user userbuf,
	64	size_t count, loff_t *ppos)
	65	{
	66	char buf[100];
	67	struct sta_info *sta = file->private_data;
07346f81	68	u32 staflags = get_sta_flags(sta);
af818581	69	int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
07346f81 JB	70	staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
07346f81 JB	71	staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
af818581 JB	72	staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
af818581 JB	73	staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
07346f81 JB	74	staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
	75	staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
	76	staflags & WLAN_STA_WME ? "WME\n" : "",
5394af4d JM	77	staflags & WLAN_STA_WDS ? "WDS\n" : "",
5394af4d JM	78	staflags & WLAN_STA_MFP ? "MFP\n" : "");
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	{
	87	char buf[20];
	88	struct sta_info *sta = file->private_data;
	89	int res = scnprintf(buf, sizeof(buf), "%u\n",
	90	skb_queue_len(&sta->ps_tx_buf));
	91	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	92	}
	93	STA_OPS(num_ps_buf_frames);
	94
e9f207f0 JB	95	static ssize_t sta_inactive_ms_read(struct file file, char __user userbuf,
	96	size_t count, loff_t *ppos)
	97	{
	98	char buf[20];
	99	struct sta_info *sta = file->private_data;
	100	int res = scnprintf(buf, sizeof(buf), "%d\n",
	101	jiffies_to_msecs(jiffies - sta->last_rx));
	102	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	103	}
	104	STA_OPS(inactive_ms);
	105
	106	static ssize_t sta_last_seq_ctrl_read(struct file file, char __user userbuf,
	107	size_t count, loff_t *ppos)
	108	{
	109	char buf[15NUM_RX_DATA_QUEUES], p = buf;
	110	int i;
	111	struct sta_info *sta = file->private_data;
	112	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
	113	p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
ba9b07d0	114	le16_to_cpu(sta->last_seq_ctrl[i]));
e9f207f0 JB	115	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	116	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	117	}
	118	STA_OPS(last_seq_ctrl);
	119
eb2ba62e RR	120	static ssize_t sta_agg_status_read(struct file file, char __user userbuf,
	121	size_t count, loff_t *ppos)
	122	{
e0b20f1c	123	char buf[64 + STA_TID_NUM * 40], *p = buf;
eb2ba62e RR	124	int i;
eb2ba62e RR	125	struct sta_info *sta = file->private_data;
eb2ba62e	126
386aa23d	127	spin_lock_bh(&sta->lock);
e0b20f1c	128	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
386aa23d	129	sta->ampdu_mlme.dialog_token_allocator + 1);
e0b20f1c PR	130	p += scnprintf(p, sizeof(buf) + buf - p,
e0b20f1c PR	131	"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
386aa23d	132	for (i = 0; i < STA_TID_NUM; i++) {
e0b20f1c PR	133	p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
e0b20f1c PR	134	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
386aa23d	135	sta->ampdu_mlme.tid_state_rx[i]);
e0b20f1c	136	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
386aa23d JB	137	sta->ampdu_mlme.tid_state_rx[i] ?
386aa23d JB	138	sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
e0b20f1c	139	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
386aa23d JB	140	sta->ampdu_mlme.tid_state_rx[i] ?
	141	sta->ampdu_mlme.tid_rx[i]->ssn : 0);
	142
e0b20f1c	143	p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
386aa23d	144	sta->ampdu_mlme.tid_state_tx[i]);
e0b20f1c	145	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
386aa23d JB	146	sta->ampdu_mlme.tid_state_tx[i] ?
386aa23d JB	147	sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
e0b20f1c	148	p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
386aa23d JB	149	sta->ampdu_mlme.tid_state_tx[i] ?
386aa23d JB	150	sta->ampdu_mlme.tid_tx[i]->ssn : 0);
e0b20f1c	151	p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
386aa23d JB	152	sta->ampdu_mlme.tid_state_tx[i] ?
386aa23d JB	153	skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
e0b20f1c	154	p += scnprintf(p, sizeof(buf) + buf - p, "\n");
386aa23d JB	155	}
386aa23d JB	156	spin_unlock_bh(&sta->lock);
eb2ba62e RR	157
	158	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	159	}
804feeb8	160	STA_OPS(agg_status);
eb2ba62e	161
64491f0e JB	162	static ssize_t sta_ht_capa_read(struct file file, char __user userbuf,
	163	size_t count, loff_t *ppos)
	164	{
7db94e21 LR	165	#define PRINT_HT_CAP(_cond, _str) \
	166	do { \
	167	if (_cond) \
	168	p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
	169	} while (0)
4c82bf8e	170	char buf[512], *p = buf;
64491f0e JB	171	int i;
	172	struct sta_info *sta = file->private_data;
	173	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
	174
	175	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
	176	htc->ht_supported ? "" : "not ");
	177	if (htc->ht_supported) {
cb136f54	178	p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
7db94e21 LR	179
	180	PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDCP");
	181	PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
	182	PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
	183
	184	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
	185	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	186	PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	187
	188	PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
	189	PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
	190	PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
	191	PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
	192
	193	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
	194	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	195	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	196	PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	197
	198	PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
	199
	200	PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
	201	"3839 bytes");
	202	PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
	203	"7935 bytes");
	204
	205	/*
	206	* For beacons and probe response this would mean the BSS
	207	* does or does not allow the usage of DSSS/CCK HT40.
	208	* Otherwise it means the STA does or does not use
	209	* DSSS/CCK HT40.
	210	*/
	211	PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
	212	PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
	213
	214	/* BIT(13) is reserved */
	215
	216	PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
	217
	218	PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
	219
64491f0e JB	220	p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
	221	htc->ampdu_factor, htc->ampdu_density);
	222	p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
9da3e068	223
64491f0e JB	224	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
	225	p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
	226	htc->mcs.rx_mask[i]);
9da3e068 LR	227	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
	228
	229	/* If not set this is meaningless */
	230	if (le16_to_cpu(htc->mcs.rx_highest)) {
	231	p += scnprintf(p, sizeof(buf)+buf-p,
	232	"MCS rx highest: %d Mbps\n",
	233	le16_to_cpu(htc->mcs.rx_highest));
	234	}
	235
64491f0e JB	236	p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
	237	htc->mcs.tx_params);
	238	}
	239
	240	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	241	}
	242	STA_OPS(ht_capa);
	243
e9f207f0	244	#define DEBUGFS_ADD(name) \
7bcfaf2f	245	debugfs_create_file(#name, 0400, \
e9f207f0 JB	246	sta->debugfs.dir, sta, &sta_ ##name## _ops);
e9f207f0 JB	247
e9f207f0 JB	248
	249	void ieee80211_sta_debugfs_add(struct sta_info *sta)
	250	{
e9f207f0	251	struct dentry *stations_dir = sta->local->debugfs.stations;
0c68ae26	252	u8 mac[3*ETH_ALEN];
e9f207f0	253
63044e9f JB	254	sta->debugfs.add_has_run = true;
63044e9f JB	255
e9f207f0 JB	256	if (!stations_dir)
	257	return;
	258
0c68ae26	259	snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
e9f207f0	260
63044e9f JB	261	/*
	262	* This might fail due to a race condition:
	263	* When mac80211 unlinks a station, the debugfs entries
	264	* remain, but it is already possible to link a new
	265	* station with the same address which triggers adding
	266	* it to debugfs; therefore, if the old station isn't
	267	* destroyed quickly enough the old station's debugfs
	268	* dir might still be around.
	269	*/
0795af57	270	sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
e9f207f0 JB	271	if (!sta->debugfs.dir)
	272	return;
	273
	274	DEBUGFS_ADD(flags);
	275	DEBUGFS_ADD(num_ps_buf_frames);
e9f207f0 JB	276	DEBUGFS_ADD(inactive_ms);
e9f207f0 JB	277	DEBUGFS_ADD(last_seq_ctrl);
eb2ba62e	278	DEBUGFS_ADD(agg_status);
386aa23d JB	279	DEBUGFS_ADD(dev);
	280	DEBUGFS_ADD(rx_packets);
	281	DEBUGFS_ADD(tx_packets);
	282	DEBUGFS_ADD(rx_bytes);
	283	DEBUGFS_ADD(tx_bytes);
	284	DEBUGFS_ADD(rx_duplicates);
	285	DEBUGFS_ADD(rx_fragments);
	286	DEBUGFS_ADD(rx_dropped);
	287	DEBUGFS_ADD(tx_fragments);
	288	DEBUGFS_ADD(tx_filtered);
	289	DEBUGFS_ADD(tx_retry_failed);
	290	DEBUGFS_ADD(tx_retry_count);
	291	DEBUGFS_ADD(last_signal);
386aa23d JB	292	DEBUGFS_ADD(last_noise);
386aa23d JB	293	DEBUGFS_ADD(wep_weak_iv_count);
64491f0e	294	DEBUGFS_ADD(ht_capa);
e9f207f0 JB	295	}
	296
	297	void ieee80211_sta_debugfs_remove(struct sta_info *sta)
	298	{
7bcfaf2f	299	debugfs_remove_recursive(sta->debugfs.dir);
e9f207f0 JB	300	sta->debugfs.dir = NULL;
e9f207f0 JB	301	}