[net-next-2.6.git] / net / mac80211 / debugfs.c


/*
 * mac80211 debugfs for wireless PHYs
 *
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 *
 * GPLv2
 *
 */

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

int mac80211_open_file_generic(struct inode *inode, struct file *file)
{
	file->private_data = inode->i_private;
	return 0;
}

#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(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);		\
}									\
									\
static const struct file_operations name## _ops = {			\
	.read = name## _read,						\
	.open = mac80211_open_file_generic,				\
	.llseek = generic_file_llseek,					\
};

#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(frequency, "%d",
		      local->hw.conf.channel->center_freq);
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 tsf_read(struct file *file, char __user *user_buf,
			     size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	u64 tsf;

	tsf = drv_get_tsf(local);

	return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
				      (unsigned long long) tsf);
}

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

	len = min(count, sizeof(buf) - 1);
	if (copy_from_user(buf, user_buf, len))
		return -EFAULT;
	buf[len] = '\0';

	if (strncmp(buf, "reset", 5) == 0) {
		if (local->ops->reset_tsf) {
			drv_reset_tsf(local);
			wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
		}
	} else {
		tsf = simple_strtoul(buf, NULL, 0);
		if (local->ops->set_tsf) {
			drv_set_tsf(local, tsf);
			wiphy_info(local->hw.wiphy,
				   "debugfs set TSF to %#018llx\n", tsf);

		}
	}

	return count;
}

static const struct file_operations tsf_ops = {
	.read = tsf_read,
	.write = tsf_write,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

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);
	__ieee80211_resume(&local->hw);
	rtnl_unlock();

	return count;
}

static const struct file_operations reset_ops = {
	.write = reset_write,
	.open = mac80211_open_file_generic,
	.llseek = noop_llseek,
};

static ssize_t noack_read(struct file *file, char __user *user_buf,
			  size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;

	return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
				      local->wifi_wme_noack_test);
}

static ssize_t noack_write(struct file *file,
			   const char __user *user_buf,
			   size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[10];
	size_t len;

	len = min(count, sizeof(buf) - 1);
	if (copy_from_user(buf, user_buf, len))
		return -EFAULT;
	buf[len] = '\0';

	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);

	return count;
}

static const struct file_operations noack_ops = {
	.read = noack_read,
	.write = noack_write,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
				 size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
				      local->uapsd_queues);
}

static ssize_t uapsd_queues_write(struct file *file,
				  const char __user *user_buf,
				  size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	unsigned long val;
	char buf[10];
	size_t len;
	int ret;

	len = min(count, sizeof(buf) - 1);
	if (copy_from_user(buf, user_buf, len))
		return -EFAULT;
	buf[len] = '\0';

	ret = strict_strtoul(buf, 0, &val);

	if (ret)
		return -EINVAL;

	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
		return -ERANGE;

	local->uapsd_queues = val;

	return count;
}

static const struct file_operations uapsd_queues_ops = {
	.read = uapsd_queues_read,
	.write = uapsd_queues_write,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
				     size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;

	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
				      local->uapsd_max_sp_len);
}

static ssize_t uapsd_max_sp_len_write(struct file *file,
				      const char __user *user_buf,
				      size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	unsigned long val;
	char buf[10];
	size_t len;
	int ret;

	len = min(count, sizeof(buf) - 1);
	if (copy_from_user(buf, user_buf, len))
		return -EFAULT;
	buf[len] = '\0';

	ret = strict_strtoul(buf, 0, &val);

	if (ret)
		return -EINVAL;

	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
		return -ERANGE;

	local->uapsd_max_sp_len = val;

	return count;
}

static const struct file_operations uapsd_max_sp_len_ops = {
	.read = uapsd_max_sp_len_read,
	.write = uapsd_max_sp_len_write,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

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

	switch (local->hw.conf.channel_type) {
	case NL80211_CHAN_NO_HT:
		buf = "no ht\n";
		break;
	case NL80211_CHAN_HT20:
		buf = "ht20\n";
		break;
	case NL80211_CHAN_HT40MINUS:
		buf = "ht40-\n";
		break;
	case NL80211_CHAN_HT40PLUS:
		buf = "ht40+\n";
		break;
	default:
		buf = "???";
		break;
	}

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

static const struct file_operations channel_type_ops = {
	.read = channel_type_read,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

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);
}

static const struct file_operations queues_ops = {
	.read = queues_read,
	.open = mac80211_open_file_generic,
	.llseek = default_llseek,
};

/* 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 = mac80211_open_file_generic,				\
	.llseek = generic_file_llseek,					\
};

#define DEBUGFS_STATS_ADD(name, field)					\
	debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
#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(frequency);
	DEBUGFS_ADD(total_ps_buffered);
	DEBUGFS_ADD(wep_iv);
	DEBUGFS_ADD(tsf);
	DEBUGFS_ADD(queues);
	DEBUGFS_ADD_MODE(reset, 0200);
	DEBUGFS_ADD(noack);
	DEBUGFS_ADD(uapsd_queues);
	DEBUGFS_ADD(uapsd_max_sp_len);
	DEBUGFS_ADD(channel_type);

	statsd = debugfs_create_dir("statistics", phyd);

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

	DEBUGFS_STATS_ADD(transmitted_fragment_count,
		local->dot11TransmittedFragmentCount);
	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
		local->dot11MulticastTransmittedFrameCount);
	DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
	DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
	DEBUGFS_STATS_ADD(multiple_retry_count,
		local->dot11MultipleRetryCount);
	DEBUGFS_STATS_ADD(frame_duplicate_count,
		local->dot11FrameDuplicateCount);
	DEBUGFS_STATS_ADD(received_fragment_count,
		local->dot11ReceivedFragmentCount);
	DEBUGFS_STATS_ADD(multicast_received_frame_count,
		local->dot11MulticastReceivedFrameCount);
	DEBUGFS_STATS_ADD(transmitted_frame_count,
		local->dot11TransmittedFrameCount);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
	DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
		local->tx_handlers_drop_unencrypted);
	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
		local->tx_handlers_drop_fragment);
	DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
		local->tx_handlers_drop_wep);
	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
		local->tx_handlers_drop_not_assoc);
	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
		local->tx_handlers_drop_unauth_port);
	DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
	DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
		local->rx_handlers_drop_nullfunc);
	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
		local->rx_handlers_drop_defrag);
	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
		local->rx_handlers_drop_short);
	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
		local->rx_handlers_drop_passive_scan);
	DEBUGFS_STATS_ADD(tx_expand_skb_head,
		local->tx_expand_skb_head);
	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
		local->tx_expand_skb_head_cloned);
	DEBUGFS_STATS_ADD(rx_expand_skb_head,
		local->rx_expand_skb_head);
	DEBUGFS_STATS_ADD(rx_expand_skb_head2,
		local->rx_expand_skb_head2);
	DEBUGFS_STATS_ADD(rx_handlers_fragments,
		local->rx_handlers_fragments);
	DEBUGFS_STATS_ADD(tx_status_drop,
		local->tx_status_drop);
#endif
	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
}
Commit	Line	Data
7bcfaf2f	1
e9f207f0 JB	2	/*
	3	* mac80211 debugfs for wireless PHYs
	4	*
	5	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
	6	*
	7	* GPLv2
	8	*
	9	*/
	10
	11	#include <linux/debugfs.h>
	12	#include <linux/rtnetlink.h>
	13	#include "ieee80211_i.h"
24487981	14	#include "driver-ops.h"
2c8dccc7	15	#include "rate.h"
e9f207f0 JB	16	#include "debugfs.h"
	17
	18	int mac80211_open_file_generic(struct inode inode, struct file file)
	19	{
	20	file->private_data = inode->i_private;
	21	return 0;
	22	}
	23
07caf9d6 EP	24	#define DEBUGFS_FORMAT_BUFFER_SIZE 100
	25
	26	int mac80211_format_buffer(char __user *userbuf, size_t count,
	27	loff_t ppos, char fmt, ...)
	28	{
	29	va_list args;
	30	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	31	int res;
	32
	33	va_start(args, fmt);
	34	res = vscnprintf(buf, sizeof(buf), fmt, args);
	35	va_end(args);
	36
	37	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	38	}
	39
	40	#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
e9f207f0 JB	41	static ssize_t name## _read(struct file file, char __user userbuf, \
	42	size_t count, loff_t *ppos) \
	43	{ \
	44	struct ieee80211_local *local = file->private_data; \
e9f207f0	45	\
07caf9d6 EP	46	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	47	fmt "\n", ##value); \
e9f207f0 JB	48	} \
	49	\
	50	static const struct file_operations name## _ops = { \
	51	.read = name## _read, \
	52	.open = mac80211_open_file_generic, \
2b18ab36	53	.llseek = generic_file_llseek, \
e9f207f0 JB	54	};
	55
	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
07caf9d6	63	DEBUGFS_READONLY_FILE(frequency, "%d",
8318d78a	64	local->hw.conf.channel->center_freq);
07caf9d6	65	DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
e9f207f0	66	local->total_ps_buffered);
07caf9d6	67	DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
e9f207f0	68	local->wep_iv & 0xffffff);
07caf9d6	69	DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
af65cd96	70	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b AF	71
	72	static ssize_t tsf_read(struct file file, char __user user_buf,
	73	size_t count, loff_t *ppos)
	74	{
	75	struct ieee80211_local *local = file->private_data;
24487981	76	u64 tsf;
3b5d665b	77
24487981	78	tsf = drv_get_tsf(local);
3b5d665b	79
07caf9d6 EP	80	return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
07caf9d6 EP	81	(unsigned long long) tsf);
3b5d665b AF	82	}
	83
	84	static ssize_t tsf_write(struct file *file,
	85	const char __user *user_buf,
	86	size_t count, loff_t *ppos)
	87	{
	88	struct ieee80211_local *local = file->private_data;
	89	unsigned long long tsf;
	90	char buf[100];
	91	size_t len;
	92
	93	len = min(count, sizeof(buf) - 1);
	94	if (copy_from_user(buf, user_buf, len))
	95	return -EFAULT;
	96	buf[len] = '\0';
	97
	98	if (strncmp(buf, "reset", 5) == 0) {
	99	if (local->ops->reset_tsf) {
24487981	100	drv_reset_tsf(local);
0fb9a9ec	101	wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
3b5d665b AF	102	}
	103	} else {
	104	tsf = simple_strtoul(buf, NULL, 0);
	105	if (local->ops->set_tsf) {
24487981	106	drv_set_tsf(local, tsf);
0fb9a9ec JP	107	wiphy_info(local->hw.wiphy,
	108	"debugfs set TSF to %#018llx\n", tsf);
	109
3b5d665b AF	110	}
	111	}
	112
	113	return count;
	114	}
	115
	116	static const struct file_operations tsf_ops = {
	117	.read = tsf_read,
	118	.write = tsf_write,
6038f373 AB	119	.open = mac80211_open_file_generic,
6038f373 AB	120	.llseek = default_llseek,
3b5d665b	121	};
e9f207f0	122
827b1fb4 JB	123	static ssize_t reset_write(struct file file, const char __user user_buf,
	124	size_t count, loff_t *ppos)
	125	{
	126	struct ieee80211_local *local = file->private_data;
	127
	128	rtnl_lock();
	129	__ieee80211_suspend(&local->hw);
	130	__ieee80211_resume(&local->hw);
	131	rtnl_unlock();
	132
	133	return count;
	134	}
	135
	136	static const struct file_operations reset_ops = {
	137	.write = reset_write,
	138	.open = mac80211_open_file_generic,
6038f373	139	.llseek = noop_llseek,
827b1fb4 JB	140	};
827b1fb4 JB	141
d3707d99 JB	142	static ssize_t noack_read(struct file file, char __user user_buf,
	143	size_t count, loff_t *ppos)
	144	{
	145	struct ieee80211_local *local = file->private_data;
d3707d99	146
07caf9d6 EP	147	return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
07caf9d6 EP	148	local->wifi_wme_noack_test);
d3707d99 JB	149	}
	150
	151	static ssize_t noack_write(struct file *file,
	152	const char __user *user_buf,
	153	size_t count, loff_t *ppos)
	154	{
	155	struct ieee80211_local *local = file->private_data;
	156	char buf[10];
	157	size_t len;
	158
	159	len = min(count, sizeof(buf) - 1);
	160	if (copy_from_user(buf, user_buf, len))
	161	return -EFAULT;
	162	buf[len] = '\0';
	163
	164	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
	165
	166	return count;
	167	}
	168
	169	static const struct file_operations noack_ops = {
	170	.read = noack_read,
	171	.write = noack_write,
6038f373 AB	172	.open = mac80211_open_file_generic,
6038f373 AB	173	.llseek = default_llseek,
d3707d99 JB	174	};
d3707d99 JB	175
50ae0cf1 KV	176	static ssize_t uapsd_queues_read(struct file file, char __user user_buf,
	177	size_t count, loff_t *ppos)
	178	{
	179	struct ieee80211_local *local = file->private_data;
07caf9d6 EP	180	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
07caf9d6 EP	181	local->uapsd_queues);
50ae0cf1 KV	182	}
	183
	184	static ssize_t uapsd_queues_write(struct file *file,
	185	const char __user *user_buf,
	186	size_t count, loff_t *ppos)
	187	{
	188	struct ieee80211_local *local = file->private_data;
	189	unsigned long val;
	190	char buf[10];
	191	size_t len;
	192	int ret;
	193
	194	len = min(count, sizeof(buf) - 1);
	195	if (copy_from_user(buf, user_buf, len))
	196	return -EFAULT;
	197	buf[len] = '\0';
	198
	199	ret = strict_strtoul(buf, 0, &val);
	200
	201	if (ret)
	202	return -EINVAL;
	203
	204	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
	205	return -ERANGE;
	206
	207	local->uapsd_queues = val;
	208
	209	return count;
	210	}
	211
	212	static const struct file_operations uapsd_queues_ops = {
	213	.read = uapsd_queues_read,
	214	.write = uapsd_queues_write,
6038f373 AB	215	.open = mac80211_open_file_generic,
6038f373 AB	216	.llseek = default_llseek,
50ae0cf1 KV	217	};
	218
	219	static ssize_t uapsd_max_sp_len_read(struct file file, char __user user_buf,
	220	size_t count, loff_t *ppos)
	221	{
	222	struct ieee80211_local *local = file->private_data;
50ae0cf1	223
07caf9d6 EP	224	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
07caf9d6 EP	225	local->uapsd_max_sp_len);
50ae0cf1 KV	226	}
	227
	228	static ssize_t uapsd_max_sp_len_write(struct file *file,
	229	const char __user *user_buf,
	230	size_t count, loff_t *ppos)
	231	{
	232	struct ieee80211_local *local = file->private_data;
	233	unsigned long val;
	234	char buf[10];
	235	size_t len;
	236	int ret;
	237
	238	len = min(count, sizeof(buf) - 1);
	239	if (copy_from_user(buf, user_buf, len))
	240	return -EFAULT;
	241	buf[len] = '\0';
	242
	243	ret = strict_strtoul(buf, 0, &val);
	244
	245	if (ret)
	246	return -EINVAL;
	247
	248	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
	249	return -ERANGE;
	250
	251	local->uapsd_max_sp_len = val;
	252
	253	return count;
	254	}
	255
	256	static const struct file_operations uapsd_max_sp_len_ops = {
	257	.read = uapsd_max_sp_len_read,
	258	.write = uapsd_max_sp_len_write,
6038f373 AB	259	.open = mac80211_open_file_generic,
6038f373 AB	260	.llseek = default_llseek,
50ae0cf1 KV	261	};
50ae0cf1 KV	262
199d69f2 BP	263	static ssize_t channel_type_read(struct file file, char __user user_buf,
	264	size_t count, loff_t *ppos)
	265	{
	266	struct ieee80211_local *local = file->private_data;
	267	const char *buf;
	268
	269	switch (local->hw.conf.channel_type) {
	270	case NL80211_CHAN_NO_HT:
	271	buf = "no ht\n";
	272	break;
	273	case NL80211_CHAN_HT20:
	274	buf = "ht20\n";
	275	break;
	276	case NL80211_CHAN_HT40MINUS:
	277	buf = "ht40-\n";
	278	break;
	279	case NL80211_CHAN_HT40PLUS:
	280	buf = "ht40+\n";
	281	break;
	282	default:
	283	buf = "???";
	284	break;
	285	}
	286
	287	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	288	}
	289
	290	static const struct file_operations channel_type_ops = {
	291	.read = channel_type_read,
6038f373 AB	292	.open = mac80211_open_file_generic,
6038f373 AB	293	.llseek = default_llseek,
199d69f2 BP	294	};
199d69f2 BP	295
db2e6bd4 JB	296	static ssize_t queues_read(struct file file, char __user user_buf,
	297	size_t count, loff_t *ppos)
	298	{
	299	struct ieee80211_local *local = file->private_data;
	300	unsigned long flags;
	301	char buf[IEEE80211_MAX_QUEUES * 20];
	302	int q, res = 0;
	303
	304	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	305	for (q = 0; q < local->hw.queues; q++)
	306	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	307	local->queue_stop_reasons[q],
3b8d81e0	308	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	309	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	310
	311	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	312	}
	313
	314	static const struct file_operations queues_ops = {
	315	.read = queues_read,
6038f373 AB	316	.open = mac80211_open_file_generic,
6038f373 AB	317	.llseek = default_llseek,
db2e6bd4 JB	318	};
db2e6bd4 JB	319
e9f207f0 JB	320	/* statistics stuff */
e9f207f0 JB	321
e9f207f0 JB	322	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	323	char __user *userbuf,
	324	size_t count, loff_t *ppos,
	325	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	326	int buflen))
	327	{
	328	struct ieee80211_low_level_stats stats;
	329	char buf[20];
	330	int res;
	331
75636525	332	rtnl_lock();
24487981	333	res = drv_get_stats(local, &stats);
e9f207f0	334	rtnl_unlock();
24487981 JB	335	if (res)
	336	return res;
	337	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	338	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	339	}
	340
	341	#define DEBUGFS_DEVSTATS_FILE(name) \
	342	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	343	char *buf, int buflen) \
	344	{ \
	345	return scnprintf(buf, buflen, "%u\n", stats->name); \
	346	} \
	347	static ssize_t stats_ ##name## _read(struct file *file, \
	348	char __user *userbuf, \
	349	size_t count, loff_t *ppos) \
	350	{ \
	351	return format_devstat_counter(file->private_data, \
	352	userbuf, \
	353	count, \
	354	ppos, \
	355	print_devstats_##name); \
	356	} \
	357	\
	358	static const struct file_operations stats_ ##name## _ops = { \
	359	.read = stats_ ##name## _read, \
	360	.open = mac80211_open_file_generic, \
2b18ab36	361	.llseek = generic_file_llseek, \
e9f207f0 JB	362	};
e9f207f0 JB	363
2826bcd8 FF	364	#define DEBUGFS_STATS_ADD(name, field) \
	365	debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
	366	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	367	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	368
e9f207f0 JB	369	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	370	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	371	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	372	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	373
e9f207f0 JB	374	void debugfs_hw_add(struct ieee80211_local *local)
	375	{
	376	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	377	struct dentry *statsd;
	378
	379	if (!phyd)
	380	return;
	381
e9f207f0 JB	382	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	383
e9f207f0	384	DEBUGFS_ADD(frequency);
e9f207f0	385	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	386	DEBUGFS_ADD(wep_iv);
ae54c985	387	DEBUGFS_ADD(tsf);
db2e6bd4	388	DEBUGFS_ADD(queues);
827b1fb4	389	DEBUGFS_ADD_MODE(reset, 0200);
d3707d99	390	DEBUGFS_ADD(noack);
50ae0cf1 KV	391	DEBUGFS_ADD(uapsd_queues);
50ae0cf1 KV	392	DEBUGFS_ADD(uapsd_max_sp_len);
199d69f2	393	DEBUGFS_ADD(channel_type);
e9f207f0 JB	394
e9f207f0 JB	395	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	396
	397	/* if the dir failed, don't put all the other things into the root! */
	398	if (!statsd)
	399	return;
	400
2826bcd8 FF	401	DEBUGFS_STATS_ADD(transmitted_fragment_count,
	402	local->dot11TransmittedFragmentCount);
	403	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
	404	local->dot11MulticastTransmittedFrameCount);
	405	DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
	406	DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
	407	DEBUGFS_STATS_ADD(multiple_retry_count,
	408	local->dot11MultipleRetryCount);
	409	DEBUGFS_STATS_ADD(frame_duplicate_count,
	410	local->dot11FrameDuplicateCount);
	411	DEBUGFS_STATS_ADD(received_fragment_count,
	412	local->dot11ReceivedFragmentCount);
	413	DEBUGFS_STATS_ADD(multicast_received_frame_count,
	414	local->dot11MulticastReceivedFrameCount);
	415	DEBUGFS_STATS_ADD(transmitted_frame_count,
	416	local->dot11TransmittedFrameCount);
e9f207f0	417	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
2826bcd8 FF	418	DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
	419	DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
	420	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
	421	local->tx_handlers_drop_unencrypted);
	422	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
	423	local->tx_handlers_drop_fragment);
	424	DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
	425	local->tx_handlers_drop_wep);
	426	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
	427	local->tx_handlers_drop_not_assoc);
	428	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
	429	local->tx_handlers_drop_unauth_port);
	430	DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
	431	DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
	432	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
	433	local->rx_handlers_drop_nullfunc);
	434	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
	435	local->rx_handlers_drop_defrag);
	436	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
	437	local->rx_handlers_drop_short);
	438	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
	439	local->rx_handlers_drop_passive_scan);
	440	DEBUGFS_STATS_ADD(tx_expand_skb_head,
	441	local->tx_expand_skb_head);
	442	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
	443	local->tx_expand_skb_head_cloned);
	444	DEBUGFS_STATS_ADD(rx_expand_skb_head,
	445	local->rx_expand_skb_head);
	446	DEBUGFS_STATS_ADD(rx_expand_skb_head2,
	447	local->rx_expand_skb_head2);
	448	DEBUGFS_STATS_ADD(rx_handlers_fragments,
	449	local->rx_handlers_fragments);
	450	DEBUGFS_STATS_ADD(tx_status_drop,
	451	local->tx_status_drop);
e9f207f0	452	#endif
2826bcd8 FF	453	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	454	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	455	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	456	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	457	}