[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,				\
	.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, 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,
	.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;
	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,
	.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;
	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,
	.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;
	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,
	.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
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, \
2b18ab36	39	.llseek = generic_file_llseek, \
e9f207f0 JB	40	};
	41
	42	#define DEBUGFS_ADD(name) \
7bcfaf2f	43	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	44
827b1fb4	45	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	46	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	47
e9f207f0 JB	48
e9f207f0	49	DEBUGFS_READONLY_FILE(frequency, 20, "%d",
8318d78a	50	local->hw.conf.channel->center_freq);
e9f207f0 JB	51	DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
e9f207f0 JB	52	local->total_ps_buffered);
3b5d665b	53	DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
e9f207f0	54	local->wep_iv & 0xffffff);
e9f207f0	55	DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
af65cd96	56	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b AF	57
	58	static ssize_t tsf_read(struct file file, char __user user_buf,
	59	size_t count, loff_t *ppos)
	60	{
	61	struct ieee80211_local *local = file->private_data;
24487981	62	u64 tsf;
3b5d665b AF	63	char buf[100];
3b5d665b AF	64
24487981	65	tsf = drv_get_tsf(local);
3b5d665b AF	66
	67	snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
	68
	69	return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
	70	}
	71
	72	static ssize_t tsf_write(struct file *file,
	73	const char __user *user_buf,
	74	size_t count, loff_t *ppos)
	75	{
	76	struct ieee80211_local *local = file->private_data;
	77	unsigned long long tsf;
	78	char buf[100];
	79	size_t len;
	80
	81	len = min(count, sizeof(buf) - 1);
	82	if (copy_from_user(buf, user_buf, len))
	83	return -EFAULT;
	84	buf[len] = '\0';
	85
	86	if (strncmp(buf, "reset", 5) == 0) {
	87	if (local->ops->reset_tsf) {
24487981	88	drv_reset_tsf(local);
0fb9a9ec	89	wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
3b5d665b AF	90	}
	91	} else {
	92	tsf = simple_strtoul(buf, NULL, 0);
	93	if (local->ops->set_tsf) {
24487981	94	drv_set_tsf(local, tsf);
0fb9a9ec JP	95	wiphy_info(local->hw.wiphy,
	96	"debugfs set TSF to %#018llx\n", tsf);
	97
3b5d665b AF	98	}
	99	}
	100
	101	return count;
	102	}
	103
	104	static const struct file_operations tsf_ops = {
	105	.read = tsf_read,
	106	.write = tsf_write,
6038f373 AB	107	.open = mac80211_open_file_generic,
6038f373 AB	108	.llseek = default_llseek,
3b5d665b	109	};
e9f207f0	110
827b1fb4 JB	111	static ssize_t reset_write(struct file file, const char __user user_buf,
	112	size_t count, loff_t *ppos)
	113	{
	114	struct ieee80211_local *local = file->private_data;
	115
	116	rtnl_lock();
	117	__ieee80211_suspend(&local->hw);
	118	__ieee80211_resume(&local->hw);
	119	rtnl_unlock();
	120
	121	return count;
	122	}
	123
	124	static const struct file_operations reset_ops = {
	125	.write = reset_write,
	126	.open = mac80211_open_file_generic,
6038f373	127	.llseek = noop_llseek,
827b1fb4 JB	128	};
827b1fb4 JB	129
d3707d99 JB	130	static ssize_t noack_read(struct file file, char __user user_buf,
	131	size_t count, loff_t *ppos)
	132	{
	133	struct ieee80211_local *local = file->private_data;
	134	int res;
	135	char buf[10];
	136
	137	res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
	138
	139	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	140	}
	141
	142	static ssize_t noack_write(struct file *file,
	143	const char __user *user_buf,
	144	size_t count, loff_t *ppos)
	145	{
	146	struct ieee80211_local *local = file->private_data;
	147	char buf[10];
	148	size_t len;
	149
	150	len = min(count, sizeof(buf) - 1);
	151	if (copy_from_user(buf, user_buf, len))
	152	return -EFAULT;
	153	buf[len] = '\0';
	154
	155	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
	156
	157	return count;
	158	}
	159
	160	static const struct file_operations noack_ops = {
	161	.read = noack_read,
	162	.write = noack_write,
6038f373 AB	163	.open = mac80211_open_file_generic,
6038f373 AB	164	.llseek = default_llseek,
d3707d99 JB	165	};
d3707d99 JB	166
50ae0cf1 KV	167	static ssize_t uapsd_queues_read(struct file file, char __user user_buf,
	168	size_t count, loff_t *ppos)
	169	{
	170	struct ieee80211_local *local = file->private_data;
	171	int res;
	172	char buf[10];
	173
	174	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
	175
	176	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	177	}
	178
	179	static ssize_t uapsd_queues_write(struct file *file,
	180	const char __user *user_buf,
	181	size_t count, loff_t *ppos)
	182	{
	183	struct ieee80211_local *local = file->private_data;
	184	unsigned long val;
	185	char buf[10];
	186	size_t len;
	187	int ret;
	188
	189	len = min(count, sizeof(buf) - 1);
	190	if (copy_from_user(buf, user_buf, len))
	191	return -EFAULT;
	192	buf[len] = '\0';
	193
	194	ret = strict_strtoul(buf, 0, &val);
	195
	196	if (ret)
	197	return -EINVAL;
	198
	199	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
	200	return -ERANGE;
	201
	202	local->uapsd_queues = val;
	203
	204	return count;
	205	}
	206
	207	static const struct file_operations uapsd_queues_ops = {
	208	.read = uapsd_queues_read,
	209	.write = uapsd_queues_write,
6038f373 AB	210	.open = mac80211_open_file_generic,
6038f373 AB	211	.llseek = default_llseek,
50ae0cf1 KV	212	};
	213
	214	static ssize_t uapsd_max_sp_len_read(struct file file, char __user user_buf,
	215	size_t count, loff_t *ppos)
	216	{
	217	struct ieee80211_local *local = file->private_data;
	218	int res;
	219	char buf[10];
	220
	221	res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
	222
	223	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	224	}
	225
	226	static ssize_t uapsd_max_sp_len_write(struct file *file,
	227	const char __user *user_buf,
	228	size_t count, loff_t *ppos)
	229	{
	230	struct ieee80211_local *local = file->private_data;
	231	unsigned long val;
	232	char buf[10];
	233	size_t len;
	234	int ret;
	235
	236	len = min(count, sizeof(buf) - 1);
	237	if (copy_from_user(buf, user_buf, len))
	238	return -EFAULT;
	239	buf[len] = '\0';
	240
	241	ret = strict_strtoul(buf, 0, &val);
	242
	243	if (ret)
	244	return -EINVAL;
	245
	246	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
	247	return -ERANGE;
	248
	249	local->uapsd_max_sp_len = val;
	250
	251	return count;
	252	}
	253
	254	static const struct file_operations uapsd_max_sp_len_ops = {
	255	.read = uapsd_max_sp_len_read,
	256	.write = uapsd_max_sp_len_write,
6038f373 AB	257	.open = mac80211_open_file_generic,
6038f373 AB	258	.llseek = default_llseek,
50ae0cf1 KV	259	};
50ae0cf1 KV	260
199d69f2 BP	261	static ssize_t channel_type_read(struct file file, char __user user_buf,
	262	size_t count, loff_t *ppos)
	263	{
	264	struct ieee80211_local *local = file->private_data;
	265	const char *buf;
	266
	267	switch (local->hw.conf.channel_type) {
	268	case NL80211_CHAN_NO_HT:
	269	buf = "no ht\n";
	270	break;
	271	case NL80211_CHAN_HT20:
	272	buf = "ht20\n";
	273	break;
	274	case NL80211_CHAN_HT40MINUS:
	275	buf = "ht40-\n";
	276	break;
	277	case NL80211_CHAN_HT40PLUS:
	278	buf = "ht40+\n";
	279	break;
	280	default:
	281	buf = "???";
	282	break;
	283	}
	284
	285	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	286	}
	287
	288	static const struct file_operations channel_type_ops = {
	289	.read = channel_type_read,
6038f373 AB	290	.open = mac80211_open_file_generic,
6038f373 AB	291	.llseek = default_llseek,
199d69f2 BP	292	};
199d69f2 BP	293
db2e6bd4 JB	294	static ssize_t queues_read(struct file file, char __user user_buf,
	295	size_t count, loff_t *ppos)
	296	{
	297	struct ieee80211_local *local = file->private_data;
	298	unsigned long flags;
	299	char buf[IEEE80211_MAX_QUEUES * 20];
	300	int q, res = 0;
	301
	302	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	303	for (q = 0; q < local->hw.queues; q++)
	304	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	305	local->queue_stop_reasons[q],
3b8d81e0	306	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	307	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	308
	309	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	310	}
	311
	312	static const struct file_operations queues_ops = {
	313	.read = queues_read,
6038f373 AB	314	.open = mac80211_open_file_generic,
6038f373 AB	315	.llseek = default_llseek,
db2e6bd4 JB	316	};
db2e6bd4 JB	317
e9f207f0 JB	318	/* statistics stuff */
e9f207f0 JB	319
e9f207f0 JB	320	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	321	char __user *userbuf,
	322	size_t count, loff_t *ppos,
	323	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	324	int buflen))
	325	{
	326	struct ieee80211_low_level_stats stats;
	327	char buf[20];
	328	int res;
	329
75636525	330	rtnl_lock();
24487981	331	res = drv_get_stats(local, &stats);
e9f207f0	332	rtnl_unlock();
24487981 JB	333	if (res)
	334	return res;
	335	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	336	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	337	}
	338
	339	#define DEBUGFS_DEVSTATS_FILE(name) \
	340	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	341	char *buf, int buflen) \
	342	{ \
	343	return scnprintf(buf, buflen, "%u\n", stats->name); \
	344	} \
	345	static ssize_t stats_ ##name## _read(struct file *file, \
	346	char __user *userbuf, \
	347	size_t count, loff_t *ppos) \
	348	{ \
	349	return format_devstat_counter(file->private_data, \
	350	userbuf, \
	351	count, \
	352	ppos, \
	353	print_devstats_##name); \
	354	} \
	355	\
	356	static const struct file_operations stats_ ##name## _ops = { \
	357	.read = stats_ ##name## _read, \
	358	.open = mac80211_open_file_generic, \
2b18ab36	359	.llseek = generic_file_llseek, \
e9f207f0 JB	360	};
e9f207f0 JB	361
2826bcd8 FF	362	#define DEBUGFS_STATS_ADD(name, field) \
	363	debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
	364	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	365	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	366
e9f207f0 JB	367	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	368	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	369	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	370	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	371
e9f207f0 JB	372	void debugfs_hw_add(struct ieee80211_local *local)
	373	{
	374	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	375	struct dentry *statsd;
	376
	377	if (!phyd)
	378	return;
	379
e9f207f0 JB	380	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	381
e9f207f0	382	DEBUGFS_ADD(frequency);
e9f207f0	383	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	384	DEBUGFS_ADD(wep_iv);
ae54c985	385	DEBUGFS_ADD(tsf);
db2e6bd4	386	DEBUGFS_ADD(queues);
827b1fb4	387	DEBUGFS_ADD_MODE(reset, 0200);
d3707d99	388	DEBUGFS_ADD(noack);
50ae0cf1 KV	389	DEBUGFS_ADD(uapsd_queues);
50ae0cf1 KV	390	DEBUGFS_ADD(uapsd_max_sp_len);
199d69f2	391	DEBUGFS_ADD(channel_type);
e9f207f0 JB	392
e9f207f0 JB	393	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	394
	395	/* if the dir failed, don't put all the other things into the root! */
	396	if (!statsd)
	397	return;
	398
2826bcd8 FF	399	DEBUGFS_STATS_ADD(transmitted_fragment_count,
	400	local->dot11TransmittedFragmentCount);
	401	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
	402	local->dot11MulticastTransmittedFrameCount);
	403	DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
	404	DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
	405	DEBUGFS_STATS_ADD(multiple_retry_count,
	406	local->dot11MultipleRetryCount);
	407	DEBUGFS_STATS_ADD(frame_duplicate_count,
	408	local->dot11FrameDuplicateCount);
	409	DEBUGFS_STATS_ADD(received_fragment_count,
	410	local->dot11ReceivedFragmentCount);
	411	DEBUGFS_STATS_ADD(multicast_received_frame_count,
	412	local->dot11MulticastReceivedFrameCount);
	413	DEBUGFS_STATS_ADD(transmitted_frame_count,
	414	local->dot11TransmittedFrameCount);
e9f207f0	415	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
2826bcd8 FF	416	DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
	417	DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
	418	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
	419	local->tx_handlers_drop_unencrypted);
	420	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
	421	local->tx_handlers_drop_fragment);
	422	DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
	423	local->tx_handlers_drop_wep);
	424	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
	425	local->tx_handlers_drop_not_assoc);
	426	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
	427	local->tx_handlers_drop_unauth_port);
	428	DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
	429	DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
	430	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
	431	local->rx_handlers_drop_nullfunc);
	432	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
	433	local->rx_handlers_drop_defrag);
	434	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
	435	local->rx_handlers_drop_short);
	436	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
	437	local->rx_handlers_drop_passive_scan);
	438	DEBUGFS_STATS_ADD(tx_expand_skb_head,
	439	local->tx_expand_skb_head);
	440	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
	441	local->tx_expand_skb_head_cloned);
	442	DEBUGFS_STATS_ADD(rx_expand_skb_head,
	443	local->rx_expand_skb_head);
	444	DEBUGFS_STATS_ADD(rx_expand_skb_head2,
	445	local->rx_expand_skb_head2);
	446	DEBUGFS_STATS_ADD(rx_handlers_fragments,
	447	local->rx_handlers_fragments);
	448	DEBUGFS_STATS_ADD(tx_status_drop,
	449	local->tx_status_drop);
e9f207f0	450	#endif
2826bcd8 FF	451	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	452	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	453	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	454	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	455	}