[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_READONLY_FILE(name, buflen, 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;		\
	char buf[buflen];						\
	int res;							\
									\
	res = scnprintf(buf, buflen, fmt "\n", ##value);		\
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
}									\
									\
static const struct file_operations name## _ops = {			\
	.read = name## _read,						\
	.open = mac80211_open_file_generic,				\
};

#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, 20, "%d",
		      local->hw.conf.channel->center_freq);
DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
		      local->total_ps_buffered);
DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
		      local->wep_iv & 0xffffff);
DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%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;
	char buf[100];

	tsf = drv_get_tsf(local);

	snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);

	return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
}

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
};

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,
};

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;
	int res;
	char buf[10];

	res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);

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

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
};

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;
	int res;
	char buf[10];

	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);

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

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
};

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;
	int res;
	char buf[10];

	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);

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

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
};

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
};

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
};

/* 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,				\
};

#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.stations = debugfs_create_dir("stations", phyd);
	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
e9f207f0 JB	24	#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
	25	static ssize_t name## _read(struct file file, char __user userbuf, \
	26	size_t count, loff_t *ppos) \
	27	{ \
	28	struct ieee80211_local *local = file->private_data; \
	29	char buf[buflen]; \
	30	int res; \
	31	\
	32	res = scnprintf(buf, buflen, fmt "\n", ##value); \
	33	return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
	34	} \
	35	\
	36	static const struct file_operations name## _ops = { \
	37	.read = name## _read, \
	38	.open = mac80211_open_file_generic, \
	39	};
	40
	41	#define DEBUGFS_ADD(name) \
7bcfaf2f	42	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	43
827b1fb4	44	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	45	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	46
e9f207f0 JB	47
e9f207f0	48	DEBUGFS_READONLY_FILE(frequency, 20, "%d",
8318d78a	49	local->hw.conf.channel->center_freq);
e9f207f0 JB	50	DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
e9f207f0 JB	51	local->total_ps_buffered);
3b5d665b	52	DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
e9f207f0	53	local->wep_iv & 0xffffff);
e9f207f0	54	DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
af65cd96	55	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b AF	56
	57	static ssize_t tsf_read(struct file file, char __user user_buf,
	58	size_t count, loff_t *ppos)
	59	{
	60	struct ieee80211_local *local = file->private_data;
24487981	61	u64 tsf;
3b5d665b AF	62	char buf[100];
3b5d665b AF	63
24487981	64	tsf = drv_get_tsf(local);
3b5d665b AF	65
	66	snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
	67
	68	return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
	69	}
	70
	71	static ssize_t tsf_write(struct file *file,
	72	const char __user *user_buf,
	73	size_t count, loff_t *ppos)
	74	{
	75	struct ieee80211_local *local = file->private_data;
	76	unsigned long long tsf;
	77	char buf[100];
	78	size_t len;
	79
	80	len = min(count, sizeof(buf) - 1);
	81	if (copy_from_user(buf, user_buf, len))
	82	return -EFAULT;
	83	buf[len] = '\0';
	84
	85	if (strncmp(buf, "reset", 5) == 0) {
	86	if (local->ops->reset_tsf) {
24487981	87	drv_reset_tsf(local);
0fb9a9ec	88	wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
3b5d665b AF	89	}
	90	} else {
	91	tsf = simple_strtoul(buf, NULL, 0);
	92	if (local->ops->set_tsf) {
24487981	93	drv_set_tsf(local, tsf);
0fb9a9ec JP	94	wiphy_info(local->hw.wiphy,
	95	"debugfs set TSF to %#018llx\n", tsf);
	96
3b5d665b AF	97	}
	98	}
	99
	100	return count;
	101	}
	102
	103	static const struct file_operations tsf_ops = {
	104	.read = tsf_read,
	105	.write = tsf_write,
	106	.open = mac80211_open_file_generic
	107	};
e9f207f0	108
827b1fb4 JB	109	static ssize_t reset_write(struct file file, const char __user user_buf,
	110	size_t count, loff_t *ppos)
	111	{
	112	struct ieee80211_local *local = file->private_data;
	113
	114	rtnl_lock();
	115	__ieee80211_suspend(&local->hw);
	116	__ieee80211_resume(&local->hw);
	117	rtnl_unlock();
	118
	119	return count;
	120	}
	121
	122	static const struct file_operations reset_ops = {
	123	.write = reset_write,
	124	.open = mac80211_open_file_generic,
	125	};
	126
d3707d99 JB	127	static ssize_t noack_read(struct file file, char __user user_buf,
	128	size_t count, loff_t *ppos)
	129	{
	130	struct ieee80211_local *local = file->private_data;
	131	int res;
	132	char buf[10];
	133
	134	res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
	135
	136	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	137	}
	138
	139	static ssize_t noack_write(struct file *file,
	140	const char __user *user_buf,
	141	size_t count, loff_t *ppos)
	142	{
	143	struct ieee80211_local *local = file->private_data;
	144	char buf[10];
	145	size_t len;
	146
	147	len = min(count, sizeof(buf) - 1);
	148	if (copy_from_user(buf, user_buf, len))
	149	return -EFAULT;
	150	buf[len] = '\0';
	151
	152	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
	153
	154	return count;
	155	}
	156
	157	static const struct file_operations noack_ops = {
	158	.read = noack_read,
	159	.write = noack_write,
	160	.open = mac80211_open_file_generic
	161	};
	162
50ae0cf1 KV	163	static ssize_t uapsd_queues_read(struct file file, char __user user_buf,
	164	size_t count, loff_t *ppos)
	165	{
	166	struct ieee80211_local *local = file->private_data;
	167	int res;
	168	char buf[10];
	169
	170	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
	171
	172	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	173	}
	174
	175	static ssize_t uapsd_queues_write(struct file *file,
	176	const char __user *user_buf,
	177	size_t count, loff_t *ppos)
	178	{
	179	struct ieee80211_local *local = file->private_data;
	180	unsigned long val;
	181	char buf[10];
	182	size_t len;
	183	int ret;
	184
	185	len = min(count, sizeof(buf) - 1);
	186	if (copy_from_user(buf, user_buf, len))
	187	return -EFAULT;
	188	buf[len] = '\0';
	189
	190	ret = strict_strtoul(buf, 0, &val);
	191
	192	if (ret)
	193	return -EINVAL;
	194
	195	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
	196	return -ERANGE;
	197
	198	local->uapsd_queues = val;
	199
	200	return count;
	201	}
	202
	203	static const struct file_operations uapsd_queues_ops = {
	204	.read = uapsd_queues_read,
	205	.write = uapsd_queues_write,
	206	.open = mac80211_open_file_generic
	207	};
	208
	209	static ssize_t uapsd_max_sp_len_read(struct file file, char __user user_buf,
	210	size_t count, loff_t *ppos)
	211	{
	212	struct ieee80211_local *local = file->private_data;
	213	int res;
	214	char buf[10];
	215
	216	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
	217
	218	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	219	}
	220
	221	static ssize_t uapsd_max_sp_len_write(struct file *file,
	222	const char __user *user_buf,
	223	size_t count, loff_t *ppos)
	224	{
	225	struct ieee80211_local *local = file->private_data;
	226	unsigned long val;
227	char buf[10];
228	size_t len;
229	int ret;
230
231	len = min(count, sizeof(buf) - 1);
232	if (copy_from_user(buf, user_buf, len))
233	return -EFAULT;
234	buf[len] = '\0';
235
236	ret = strict_strtoul(buf, 0, &val);
237
238	if (ret)
239	return -EINVAL;
240
241	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
242	return -ERANGE;
243
244	local->uapsd_max_sp_len = val;
245
246	return count;
247	}
248
249	static const struct file_operations uapsd_max_sp_len_ops = {
250	.read = uapsd_max_sp_len_read,
251	.write = uapsd_max_sp_len_write,
252	.open = mac80211_open_file_generic
253	};
254
199d69f2 BP	255	static ssize_t channel_type_read(struct file file, char __user user_buf,
	256	size_t count, loff_t *ppos)
	257	{
	258	struct ieee80211_local *local = file->private_data;
	259	const char *buf;
	260
	261	switch (local->hw.conf.channel_type) {
	262	case NL80211_CHAN_NO_HT:
	263	buf = "no ht\n";
	264	break;
	265	case NL80211_CHAN_HT20:
	266	buf = "ht20\n";
	267	break;
	268	case NL80211_CHAN_HT40MINUS:
	269	buf = "ht40-\n";
	270	break;
	271	case NL80211_CHAN_HT40PLUS:
	272	buf = "ht40+\n";
	273	break;
	274	default:
	275	buf = "???";
	276	break;
	277	}
	278
	279	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	280	}
	281
	282	static const struct file_operations channel_type_ops = {
	283	.read = channel_type_read,
	284	.open = mac80211_open_file_generic
	285	};
	286
db2e6bd4 JB	287	static ssize_t queues_read(struct file file, char __user user_buf,
	288	size_t count, loff_t *ppos)
	289	{
	290	struct ieee80211_local *local = file->private_data;
	291	unsigned long flags;
	292	char buf[IEEE80211_MAX_QUEUES * 20];
	293	int q, res = 0;
	294
	295	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	296	for (q = 0; q < local->hw.queues; q++)
	297	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	298	local->queue_stop_reasons[q],
3b8d81e0	299	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	300	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	301
	302	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	303	}
	304
	305	static const struct file_operations queues_ops = {
	306	.read = queues_read,
	307	.open = mac80211_open_file_generic
	308	};
	309
e9f207f0 JB	310	/* statistics stuff */
e9f207f0 JB	311
e9f207f0 JB	312	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	313	char __user *userbuf,
	314	size_t count, loff_t *ppos,
	315	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	316	int buflen))
	317	{
	318	struct ieee80211_low_level_stats stats;
	319	char buf[20];
	320	int res;
	321
75636525	322	rtnl_lock();
24487981	323	res = drv_get_stats(local, &stats);
e9f207f0	324	rtnl_unlock();
24487981 JB	325	if (res)
	326	return res;
	327	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	328	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	329	}
	330
	331	#define DEBUGFS_DEVSTATS_FILE(name) \
	332	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	333	char *buf, int buflen) \
	334	{ \
	335	return scnprintf(buf, buflen, "%u\n", stats->name); \
	336	} \
	337	static ssize_t stats_ ##name## _read(struct file *file, \
	338	char __user *userbuf, \
	339	size_t count, loff_t *ppos) \
	340	{ \
	341	return format_devstat_counter(file->private_data, \
	342	userbuf, \
	343	count, \
	344	ppos, \
	345	print_devstats_##name); \
	346	} \
	347	\
	348	static const struct file_operations stats_ ##name## _ops = { \
	349	.read = stats_ ##name## _read, \
	350	.open = mac80211_open_file_generic, \
	351	};
	352
2826bcd8 FF	353	#define DEBUGFS_STATS_ADD(name, field) \
	354	debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
	355	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	356	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	357
e9f207f0 JB	358	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	359	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	360	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	361	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	362
e9f207f0 JB	363	void debugfs_hw_add(struct ieee80211_local *local)
	364	{
	365	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	366	struct dentry *statsd;
	367
	368	if (!phyd)
	369	return;
	370
	371	local->debugfs.stations = debugfs_create_dir("stations", phyd);
	372	local->debugfs.keys = debugfs_create_dir("keys", phyd);
	373
e9f207f0	374	DEBUGFS_ADD(frequency);
e9f207f0	375	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	376	DEBUGFS_ADD(wep_iv);
ae54c985	377	DEBUGFS_ADD(tsf);
db2e6bd4	378	DEBUGFS_ADD(queues);
827b1fb4	379	DEBUGFS_ADD_MODE(reset, 0200);
d3707d99	380	DEBUGFS_ADD(noack);
50ae0cf1 KV	381	DEBUGFS_ADD(uapsd_queues);
50ae0cf1 KV	382	DEBUGFS_ADD(uapsd_max_sp_len);
199d69f2	383	DEBUGFS_ADD(channel_type);
e9f207f0 JB	384
e9f207f0 JB	385	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	386
	387	/* if the dir failed, don't put all the other things into the root! */
	388	if (!statsd)
	389	return;
	390
2826bcd8 FF	391	DEBUGFS_STATS_ADD(transmitted_fragment_count,
	392	local->dot11TransmittedFragmentCount);
	393	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
	394	local->dot11MulticastTransmittedFrameCount);
	395	DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
	396	DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
	397	DEBUGFS_STATS_ADD(multiple_retry_count,
	398	local->dot11MultipleRetryCount);
	399	DEBUGFS_STATS_ADD(frame_duplicate_count,
	400	local->dot11FrameDuplicateCount);
	401	DEBUGFS_STATS_ADD(received_fragment_count,
	402	local->dot11ReceivedFragmentCount);
	403	DEBUGFS_STATS_ADD(multicast_received_frame_count,
	404	local->dot11MulticastReceivedFrameCount);
	405	DEBUGFS_STATS_ADD(transmitted_frame_count,
	406	local->dot11TransmittedFrameCount);
e9f207f0	407	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
2826bcd8 FF	408	DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
	409	DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
	410	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
	411	local->tx_handlers_drop_unencrypted);
	412	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
	413	local->tx_handlers_drop_fragment);
	414	DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
	415	local->tx_handlers_drop_wep);
	416	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
	417	local->tx_handlers_drop_not_assoc);
	418	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
	419	local->tx_handlers_drop_unauth_port);
	420	DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
	421	DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
	422	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
	423	local->rx_handlers_drop_nullfunc);
	424	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
	425	local->rx_handlers_drop_defrag);
	426	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
	427	local->rx_handlers_drop_short);
	428	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
	429	local->rx_handlers_drop_passive_scan);
	430	DEBUGFS_STATS_ADD(tx_expand_skb_head,
	431	local->tx_expand_skb_head);
	432	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
	433	local->tx_expand_skb_head_cloned);
	434	DEBUGFS_STATS_ADD(rx_expand_skb_head,
	435	local->rx_expand_skb_head);
	436	DEBUGFS_STATS_ADD(rx_expand_skb_head2,
	437	local->rx_expand_skb_head2);
	438	DEBUGFS_STATS_ADD(rx_handlers_fragments,
	439	local->rx_handlers_fragments);
	440	DEBUGFS_STATS_ADD(tx_status_drop,
	441	local->tx_status_drop);
e9f207f0	442	#endif
2826bcd8 FF	443	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	444	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	445	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	446	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	447	}