[linux-2.6-block.git] / net / mac80211 / debugfs.c

/*
 * mac80211 debugfs for wireless PHYs
 *
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 *
 * GPLv2
 *
 */

#include <linux/debugfs.h>
#include <linux/rtnetlink.h>
#include <linux/vmalloc.h>
#include "ieee80211_i.h"
#include "driver-ops.h"
#include "rate.h"
#include "debugfs.h"

#define DEBUGFS_FORMAT_BUFFER_SIZE 100

int mac80211_format_buffer(char __user *userbuf, size_t count,
				  loff_t *ppos, char *fmt, ...)
{
	va_list args;
	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	int res;

	va_start(args, fmt);
	res = vscnprintf(buf, sizeof(buf), fmt, args);
	va_end(args);

	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}

#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...)			\
static ssize_t name## _read(struct file *file, char __user *userbuf,	\
			    size_t count, loff_t *ppos)			\
{									\
	struct ieee80211_local *local = file->private_data;		\
									\
	return mac80211_format_buffer(userbuf, count, ppos, 		\
				      fmt "\n", ##value);		\
}

#define DEBUGFS_READONLY_FILE_OPS(name)			\
static const struct file_operations name## _ops = {			\
	.read = name## _read,						\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};

#define DEBUGFS_READONLY_FILE(name, fmt, value...)		\
	DEBUGFS_READONLY_FILE_FN(name, fmt, value)		\
	DEBUGFS_READONLY_FILE_OPS(name)

#define DEBUGFS_ADD(name)						\
	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);

#define DEBUGFS_ADD_MODE(name, mode)					\
	debugfs_create_file(#name, mode, phyd, local, &name## _ops);


DEBUGFS_READONLY_FILE(user_power, "%d",
		      local->user_power_level);
DEBUGFS_READONLY_FILE(power, "%d",
		      local->hw.conf.power_level);
DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
		      local->total_ps_buffered);
DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
		      local->wep_iv & 0xffffff);
DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");

static ssize_t aqm_read(struct file *file,
			char __user *user_buf,
			size_t count,
			loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	struct fq *fq = &local->fq;
	char buf[200];
	int len = 0;

	spin_lock_bh(&local->fq.lock);
	rcu_read_lock();

	len = scnprintf(buf, sizeof(buf),
			"access name value\n"
			"R fq_flows_cnt %u\n"
			"R fq_backlog %u\n"
			"R fq_overlimit %u\n"
			"R fq_collisions %u\n"
			"RW fq_limit %u\n"
			"RW fq_quantum %u\n",
			fq->flows_cnt,
			fq->backlog,
			fq->overlimit,
			fq->collisions,
			fq->limit,
			fq->quantum);

	rcu_read_unlock();
	spin_unlock_bh(&local->fq.lock);

	return simple_read_from_buffer(user_buf, count, ppos,
				       buf, len);
}

static ssize_t aqm_write(struct file *file,
			 const char __user *user_buf,
			 size_t count,
			 loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[100];
	size_t len;

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

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

	buf[sizeof(buf) - 1] = '\0';
	len = strlen(buf);
	if (len > 0 && buf[len-1] == '\n')
		buf[len-1] = 0;

	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
		return count;
	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
		return count;

	return -EINVAL;
}

static const struct file_operations aqm_ops = {
	.write = aqm_write,
	.read = aqm_read,
	.open = simple_open,
	.llseek = default_llseek,
};

#ifdef CONFIG_PM
static ssize_t reset_write(struct file *file, const char __user *user_buf,
			   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;

	rtnl_lock();
	__ieee80211_suspend(&local->hw, NULL);
	__ieee80211_resume(&local->hw);
	rtnl_unlock();

	return count;
}

static const struct file_operations reset_ops = {
	.write = reset_write,
	.open = simple_open,
	.llseek = noop_llseek,
};
#endif

static const char *hw_flag_names[] = {
#define FLAG(F)	[IEEE80211_HW_##F] = #F
	FLAG(HAS_RATE_CONTROL),
	FLAG(RX_INCLUDES_FCS),
	FLAG(HOST_BROADCAST_PS_BUFFERING),
	FLAG(SIGNAL_UNSPEC),
	FLAG(SIGNAL_DBM),
	FLAG(NEED_DTIM_BEFORE_ASSOC),
	FLAG(SPECTRUM_MGMT),
	FLAG(AMPDU_AGGREGATION),
	FLAG(SUPPORTS_PS),
	FLAG(PS_NULLFUNC_STACK),
	FLAG(SUPPORTS_DYNAMIC_PS),
	FLAG(MFP_CAPABLE),
	FLAG(WANT_MONITOR_VIF),
	FLAG(NO_AUTO_VIF),
	FLAG(SW_CRYPTO_CONTROL),
	FLAG(SUPPORT_FAST_XMIT),
	FLAG(REPORTS_TX_ACK_STATUS),
	FLAG(CONNECTION_MONITOR),
	FLAG(QUEUE_CONTROL),
	FLAG(SUPPORTS_PER_STA_GTK),
	FLAG(AP_LINK_PS),
	FLAG(TX_AMPDU_SETUP_IN_HW),
	FLAG(SUPPORTS_RC_TABLE),
	FLAG(P2P_DEV_ADDR_FOR_INTF),
	FLAG(TIMING_BEACON_ONLY),
	FLAG(SUPPORTS_HT_CCK_RATES),
	FLAG(CHANCTX_STA_CSA),
	FLAG(SUPPORTS_CLONED_SKBS),
	FLAG(SINGLE_SCAN_ON_ALL_BANDS),
	FLAG(TDLS_WIDER_BW),
	FLAG(SUPPORTS_AMSDU_IN_AMPDU),
	FLAG(BEACON_TX_STATUS),
	FLAG(NEEDS_UNIQUE_STA_ADDR),
	FLAG(SUPPORTS_REORDERING_BUFFER),
	FLAG(USES_RSS),
	FLAG(TX_AMSDU),
	FLAG(TX_FRAG_LIST),
	FLAG(REPORTS_LOW_ACK),
#undef FLAG
};

static ssize_t hwflags_read(struct file *file, char __user *user_buf,
			    size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
	char *buf = kzalloc(bufsz, GFP_KERNEL);
	char *pos = buf, *end = buf + bufsz - 1;
	ssize_t rv;
	int i;

	if (!buf)
		return -ENOMEM;

	/* fail compilation if somebody adds or removes
	 * a flag without updating the name array above
	 */
	BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);

	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
		if (test_bit(i, local->hw.flags))
			pos += scnprintf(pos, end - pos, "%s\n",
					 hw_flag_names[i]);
	}

	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	kfree(buf);
	return rv;
}

static ssize_t queues_read(struct file *file, char __user *user_buf,
			   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	unsigned long flags;
	char buf[IEEE80211_MAX_QUEUES * 20];
	int q, res = 0;

	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	for (q = 0; q < local->hw.queues; q++)
		res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
				local->queue_stop_reasons[q],
				skb_queue_len(&local->pending[q]));
	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);

	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
}

DEBUGFS_READONLY_FILE_OPS(hwflags);
DEBUGFS_READONLY_FILE_OPS(queues);

/* statistics stuff */

static ssize_t format_devstat_counter(struct ieee80211_local *local,
	char __user *userbuf,
	size_t count, loff_t *ppos,
	int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
			  int buflen))
{
	struct ieee80211_low_level_stats stats;
	char buf[20];
	int res;

	rtnl_lock();
	res = drv_get_stats(local, &stats);
	rtnl_unlock();
	if (res)
		return res;
	res = printvalue(&stats, buf, sizeof(buf));
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}

#define DEBUGFS_DEVSTATS_FILE(name)					\
static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
				 char *buf, int buflen)			\
{									\
	return scnprintf(buf, buflen, "%u\n", stats->name);		\
}									\
static ssize_t stats_ ##name## _read(struct file *file,			\
				     char __user *userbuf,		\
				     size_t count, loff_t *ppos)	\
{									\
	return format_devstat_counter(file->private_data,		\
				      userbuf,				\
				      count,				\
				      ppos,				\
				      print_devstats_##name);		\
}									\
									\
static const struct file_operations stats_ ##name## _ops = {		\
	.read = stats_ ##name## _read,					\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};

#define DEBUGFS_STATS_ADD(name)					\
	debugfs_create_u32(#name, 0400, statsd, &local->name);
#define DEBUGFS_DEVSTATS_ADD(name)					\
	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);

DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);

void debugfs_hw_add(struct ieee80211_local *local)
{
	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	struct dentry *statsd;

	if (!phyd)
		return;

	local->debugfs.keys = debugfs_create_dir("keys", phyd);

	DEBUGFS_ADD(total_ps_buffered);
	DEBUGFS_ADD(wep_iv);
	DEBUGFS_ADD(queues);
#ifdef CONFIG_PM
	DEBUGFS_ADD_MODE(reset, 0200);
#endif
	DEBUGFS_ADD(hwflags);
	DEBUGFS_ADD(user_power);
	DEBUGFS_ADD(power);

	if (local->ops->wake_tx_queue)
		DEBUGFS_ADD_MODE(aqm, 0600);

	statsd = debugfs_create_dir("statistics", phyd);

	/* if the dir failed, don't put all the other things into the root! */
	if (!statsd)
		return;

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	DEBUGFS_STATS_ADD(dot11FailedCount);
	DEBUGFS_STATS_ADD(dot11RetryCount);
	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
	DEBUGFS_STATS_ADD(tx_handlers_drop);
	DEBUGFS_STATS_ADD(tx_handlers_queued);
	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	DEBUGFS_STATS_ADD(rx_handlers_drop);
	DEBUGFS_STATS_ADD(rx_handlers_queued);
	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	DEBUGFS_STATS_ADD(tx_status_drop);
#endif
	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* mac80211 debugfs for wireless PHYs
	3	*
	4	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e	5	* Copyright 2013-2014 Intel Mobile Communications GmbH
e9f207f0 JB	6	*
	7	* GPLv2
	8	*
	9	*/
	10
	11	#include <linux/debugfs.h>
	12	#include <linux/rtnetlink.h>
9399b86c	13	#include <linux/vmalloc.h>
e9f207f0	14	#include "ieee80211_i.h"
24487981	15	#include "driver-ops.h"
2c8dccc7	16	#include "rate.h"
e9f207f0 JB	17	#include "debugfs.h"
e9f207f0 JB	18
07caf9d6 EP	19	#define DEBUGFS_FORMAT_BUFFER_SIZE 100
	20
	21	int mac80211_format_buffer(char __user *userbuf, size_t count,
	22	loff_t ppos, char fmt, ...)
	23	{
	24	va_list args;
	25	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	26	int res;
	27
	28	va_start(args, fmt);
	29	res = vscnprintf(buf, sizeof(buf), fmt, args);
	30	va_end(args);
	31
	32	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	33	}
	34
279daf64	35	#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
e9f207f0 JB	36	static ssize_t name## _read(struct file file, char __user userbuf, \
	37	size_t count, loff_t *ppos) \
	38	{ \
	39	struct ieee80211_local *local = file->private_data; \
e9f207f0	40	\
07caf9d6 EP	41	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	42	fmt "\n", ##value); \
279daf64 BG	43	}
	44
	45	#define DEBUGFS_READONLY_FILE_OPS(name) \
e9f207f0 JB	46	static const struct file_operations name## _ops = { \
e9f207f0 JB	47	.read = name## _read, \
234e3405	48	.open = simple_open, \
2b18ab36	49	.llseek = generic_file_llseek, \
e9f207f0 JB	50	};
e9f207f0 JB	51
279daf64 BG	52	#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
	53	DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
	54	DEBUGFS_READONLY_FILE_OPS(name)
	55
e9f207f0	56	#define DEBUGFS_ADD(name) \
7bcfaf2f	57	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	58
827b1fb4	59	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	60	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	61
e9f207f0 JB	62
83bdf2a1 BG	63	DEBUGFS_READONLY_FILE(user_power, "%d",
	64	local->user_power_level);
	65	DEBUGFS_READONLY_FILE(power, "%d",
	66	local->hw.conf.power_level);
07caf9d6	67	DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
e9f207f0	68	local->total_ps_buffered);
07caf9d6	69	DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
e9f207f0	70	local->wep_iv & 0xffffff);
07caf9d6	71	DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
af65cd96	72	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b	73
8d51dbb8 THJ	74	static ssize_t aqm_read(struct file *file,
	75	char __user *user_buf,
	76	size_t count,
	77	loff_t *ppos)
9399b86c	78	{
8d51dbb8	79	struct ieee80211_local *local = file->private_data;
9399b86c	80	struct fq *fq = &local->fq;
8d51dbb8	81	char buf[200];
9399b86c	82	int len = 0;
9399b86c MK	83
	84	spin_lock_bh(&local->fq.lock);
	85	rcu_read_lock();
	86
8d51dbb8 THJ	87	len = scnprintf(buf, sizeof(buf),
	88	"access name value\n"
	89	"R fq_flows_cnt %u\n"
	90	"R fq_backlog %u\n"
	91	"R fq_overlimit %u\n"
	92	"R fq_collisions %u\n"
	93	"RW fq_limit %u\n"
	94	"RW fq_quantum %u\n",
	95	fq->flows_cnt,
	96	fq->backlog,
	97	fq->overlimit,
	98	fq->collisions,
	99	fq->limit,
	100	fq->quantum);
9399b86c MK	101
	102	rcu_read_unlock();
	103	spin_unlock_bh(&local->fq.lock);
	104
9399b86c	105	return simple_read_from_buffer(user_buf, count, ppos,
8d51dbb8	106	buf, len);
9399b86c MK	107	}
	108
	109	static ssize_t aqm_write(struct file *file,
	110	const char __user *user_buf,
	111	size_t count,
	112	loff_t *ppos)
	113	{
8d51dbb8	114	struct ieee80211_local *local = file->private_data;
9399b86c MK	115	char buf[100];
	116	size_t len;
	117
	118	if (count > sizeof(buf))
	119	return -EINVAL;
	120
	121	if (copy_from_user(buf, user_buf, count))
	122	return -EFAULT;
	123
	124	buf[sizeof(buf) - 1] = '\0';
	125	len = strlen(buf);
	126	if (len > 0 && buf[len-1] == '\n')
	127	buf[len-1] = 0;
	128
	129	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
	130	return count;
	131	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
	132	return count;
	133
	134	return -EINVAL;
	135	}
	136
	137	static const struct file_operations aqm_ops = {
	138	.write = aqm_write,
	139	.read = aqm_read,
8d51dbb8	140	.open = simple_open,
9399b86c MK	141	.llseek = default_llseek,
	142	};
	143
2ad4814f	144	#ifdef CONFIG_PM
827b1fb4 JB	145	static ssize_t reset_write(struct file file, const char __user user_buf,
	146	size_t count, loff_t *ppos)
	147	{
	148	struct ieee80211_local *local = file->private_data;
	149
	150	rtnl_lock();
eecc4800	151	__ieee80211_suspend(&local->hw, NULL);
827b1fb4 JB	152	__ieee80211_resume(&local->hw);
	153	rtnl_unlock();
	154
	155	return count;
	156	}
	157
	158	static const struct file_operations reset_ops = {
	159	.write = reset_write,
234e3405	160	.open = simple_open,
6038f373	161	.llseek = noop_llseek,
827b1fb4	162	};
2ad4814f	163	#endif
827b1fb4	164
68920c97	165	static const char *hw_flag_names[] = {
30686bf7 JB	166	#define FLAG(F) [IEEE80211_HW_##F] = #F
	167	FLAG(HAS_RATE_CONTROL),
	168	FLAG(RX_INCLUDES_FCS),
	169	FLAG(HOST_BROADCAST_PS_BUFFERING),
	170	FLAG(SIGNAL_UNSPEC),
	171	FLAG(SIGNAL_DBM),
	172	FLAG(NEED_DTIM_BEFORE_ASSOC),
	173	FLAG(SPECTRUM_MGMT),
	174	FLAG(AMPDU_AGGREGATION),
	175	FLAG(SUPPORTS_PS),
	176	FLAG(PS_NULLFUNC_STACK),
	177	FLAG(SUPPORTS_DYNAMIC_PS),
	178	FLAG(MFP_CAPABLE),
	179	FLAG(WANT_MONITOR_VIF),
	180	FLAG(NO_AUTO_VIF),
	181	FLAG(SW_CRYPTO_CONTROL),
	182	FLAG(SUPPORT_FAST_XMIT),
	183	FLAG(REPORTS_TX_ACK_STATUS),
	184	FLAG(CONNECTION_MONITOR),
	185	FLAG(QUEUE_CONTROL),
	186	FLAG(SUPPORTS_PER_STA_GTK),
	187	FLAG(AP_LINK_PS),
	188	FLAG(TX_AMPDU_SETUP_IN_HW),
	189	FLAG(SUPPORTS_RC_TABLE),
	190	FLAG(P2P_DEV_ADDR_FOR_INTF),
	191	FLAG(TIMING_BEACON_ONLY),
	192	FLAG(SUPPORTS_HT_CCK_RATES),
	193	FLAG(CHANCTX_STA_CSA),
	194	FLAG(SUPPORTS_CLONED_SKBS),
	195	FLAG(SINGLE_SCAN_ON_ALL_BANDS),
b98fb44f	196	FLAG(TDLS_WIDER_BW),
99e7ca44	197	FLAG(SUPPORTS_AMSDU_IN_AMPDU),
35afa588	198	FLAG(BEACON_TX_STATUS),
31104891	199	FLAG(NEEDS_UNIQUE_STA_ADDR),
412a6d80	200	FLAG(SUPPORTS_REORDERING_BUFFER),
c9c5962b	201	FLAG(USES_RSS),
6e0456b5 FF	202	FLAG(TX_AMSDU),
6e0456b5 FF	203	FLAG(TX_FRAG_LIST),
e8a24cd4	204	FLAG(REPORTS_LOW_ACK),
30686bf7 JB	205	#undef FLAG
	206	};
	207
279daf64 BG	208	static ssize_t hwflags_read(struct file file, char __user user_buf,
	209	size_t count, loff_t *ppos)
	210	{
	211	struct ieee80211_local *local = file->private_data;
30686bf7 JB	212	size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
	213	char *buf = kzalloc(bufsz, GFP_KERNEL);
	214	char pos = buf, end = buf + bufsz - 1;
279daf64	215	ssize_t rv;
30686bf7	216	int i;
279daf64	217
d15b8459	218	if (!buf)
30686bf7 JB	219	return -ENOMEM;
	220
	221	/* fail compilation if somebody adds or removes
	222	* a flag without updating the name array above
	223	*/
68920c97	224	BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
30686bf7 JB	225
	226	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
	227	if (test_bit(i, local->hw.flags))
4633dfc3	228	pos += scnprintf(pos, end - pos, "%s\n",
30686bf7 JB	229	hw_flag_names[i]);
30686bf7 JB	230	}
279daf64 BG	231
	232	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	233	kfree(buf);
	234	return rv;
	235	}
199d69f2	236
db2e6bd4 JB	237	static ssize_t queues_read(struct file file, char __user user_buf,
	238	size_t count, loff_t *ppos)
	239	{
	240	struct ieee80211_local *local = file->private_data;
	241	unsigned long flags;
	242	char buf[IEEE80211_MAX_QUEUES * 20];
	243	int q, res = 0;
	244
	245	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	246	for (q = 0; q < local->hw.queues; q++)
	247	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	248	local->queue_stop_reasons[q],
3b8d81e0	249	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	250	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	251
	252	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	253	}
	254
279daf64	255	DEBUGFS_READONLY_FILE_OPS(hwflags);
279daf64	256	DEBUGFS_READONLY_FILE_OPS(queues);
db2e6bd4	257
e9f207f0 JB	258	/* statistics stuff */
e9f207f0 JB	259
e9f207f0 JB	260	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	261	char __user *userbuf,
	262	size_t count, loff_t *ppos,
	263	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	264	int buflen))
	265	{
	266	struct ieee80211_low_level_stats stats;
	267	char buf[20];
	268	int res;
	269
75636525	270	rtnl_lock();
24487981	271	res = drv_get_stats(local, &stats);
e9f207f0	272	rtnl_unlock();
24487981 JB	273	if (res)
	274	return res;
	275	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	276	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	277	}
	278
	279	#define DEBUGFS_DEVSTATS_FILE(name) \
	280	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	281	char *buf, int buflen) \
	282	{ \
	283	return scnprintf(buf, buflen, "%u\n", stats->name); \
	284	} \
	285	static ssize_t stats_ ##name## _read(struct file *file, \
	286	char __user *userbuf, \
	287	size_t count, loff_t *ppos) \
	288	{ \
	289	return format_devstat_counter(file->private_data, \
	290	userbuf, \
	291	count, \
	292	ppos, \
	293	print_devstats_##name); \
	294	} \
	295	\
	296	static const struct file_operations stats_ ##name## _ops = { \
	297	.read = stats_ ##name## _read, \
234e3405	298	.open = simple_open, \
2b18ab36	299	.llseek = generic_file_llseek, \
e9f207f0 JB	300	};
e9f207f0 JB	301
f1160434 JB	302	#define DEBUGFS_STATS_ADD(name) \
f1160434 JB	303	debugfs_create_u32(#name, 0400, statsd, &local->name);
2826bcd8	304	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	305	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	306
e9f207f0 JB	307	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	308	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	309	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	310	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	311
e9f207f0 JB	312	void debugfs_hw_add(struct ieee80211_local *local)
	313	{
	314	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	315	struct dentry *statsd;
	316
	317	if (!phyd)
	318	return;
	319
e9f207f0 JB	320	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	321
e9f207f0	322	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	323	DEBUGFS_ADD(wep_iv);
db2e6bd4	324	DEBUGFS_ADD(queues);
2ad4814f	325	#ifdef CONFIG_PM
827b1fb4	326	DEBUGFS_ADD_MODE(reset, 0200);
2ad4814f	327	#endif
279daf64	328	DEBUGFS_ADD(hwflags);
83bdf2a1 BG	329	DEBUGFS_ADD(user_power);
83bdf2a1 BG	330	DEBUGFS_ADD(power);
8d51dbb8 THJ	331
	332	if (local->ops->wake_tx_queue)
	333	DEBUGFS_ADD_MODE(aqm, 0600);
e9f207f0 JB	334
e9f207f0 JB	335	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	336
	337	/* if the dir failed, don't put all the other things into the root! */
	338	if (!statsd)
	339	return;
	340
c206ca67	341	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
f1160434 JB	342	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	343	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	344	DEBUGFS_STATS_ADD(dot11FailedCount);
	345	DEBUGFS_STATS_ADD(dot11RetryCount);
	346	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	347	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	348	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	349	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	350	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
f1160434 JB	351	DEBUGFS_STATS_ADD(tx_handlers_drop);
	352	DEBUGFS_STATS_ADD(tx_handlers_queued);
	353	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	354	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	355	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	356	DEBUGFS_STATS_ADD(rx_handlers_drop);
	357	DEBUGFS_STATS_ADD(rx_handlers_queued);
	358	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	359	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
f1160434 JB	360	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	361	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	362	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	363	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	364	DEBUGFS_STATS_ADD(tx_status_drop);
e9f207f0	365	#endif
2826bcd8 FF	366	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	367	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	368	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	369	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	370	}