[linux-block.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_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 = mac80211_open_file_generic,				\
	.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(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 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 = 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;
	u8 val;
	int ret;

	ret = kstrtou8_from_user(user_buf, count, 0, &val);
	if (ret)
		return ret;

	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 ssize_t hwflags_read(struct file *file, char __user *user_buf,
			    size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	int mxln = 500;
	ssize_t rv;
	char *buf = kzalloc(mxln, GFP_KERNEL);
	int sf = 0; /* how many written so far */

	if (!buf)
		return 0;

	sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
		sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
		sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
	if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
		sf += snprintf(buf + sf, mxln - sf,
			       "HOST_BCAST_PS_BUFFERING\n");
	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
		sf += snprintf(buf + sf, mxln - sf,
			       "2GHZ_SHORT_SLOT_INCAPABLE\n");
	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
		sf += snprintf(buf + sf, mxln - sf,
			       "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
	if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
		sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
		sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
		sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
	if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
		sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
	if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
		sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
	if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
		sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
	if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
		sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
	if (local->hw.flags & IEEE80211_HW_BEACON_FILTER)
		sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
		sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
	if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
		sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI\n");
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
		sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
	if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
		sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
	if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
		sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");

	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(channel_type);
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 = 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(queues);
	DEBUGFS_ADD_MODE(reset, 0200);
	DEBUGFS_ADD(noack);
	DEBUGFS_ADD(uapsd_queues);
	DEBUGFS_ADD(uapsd_max_sp_len);
	DEBUGFS_ADD(channel_type);
	DEBUGFS_ADD(hwflags);
	DEBUGFS_ADD(user_power);
	DEBUGFS_ADD(power);

	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
279daf64	40	#define DEBUGFS_READONLY_FILE_FN(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); \
279daf64 BG	48	}
	49
	50	#define DEBUGFS_READONLY_FILE_OPS(name) \
e9f207f0 JB	51	static const struct file_operations name## _ops = { \
	52	.read = name## _read, \
	53	.open = mac80211_open_file_generic, \
2b18ab36	54	.llseek = generic_file_llseek, \
e9f207f0 JB	55	};
e9f207f0 JB	56
279daf64 BG	57	#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
	58	DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
	59	DEBUGFS_READONLY_FILE_OPS(name)
	60
e9f207f0	61	#define DEBUGFS_ADD(name) \
7bcfaf2f	62	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	63
827b1fb4	64	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	65	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	66
e9f207f0 JB	67
83bdf2a1 BG	68	DEBUGFS_READONLY_FILE(user_power, "%d",
	69	local->user_power_level);
	70	DEBUGFS_READONLY_FILE(power, "%d",
	71	local->hw.conf.power_level);
07caf9d6	72	DEBUGFS_READONLY_FILE(frequency, "%d",
8318d78a	73	local->hw.conf.channel->center_freq);
07caf9d6	74	DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
e9f207f0	75	local->total_ps_buffered);
07caf9d6	76	DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
e9f207f0	77	local->wep_iv & 0xffffff);
07caf9d6	78	DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
af65cd96	79	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b	80
827b1fb4 JB	81	static ssize_t reset_write(struct file file, const char __user user_buf,
	82	size_t count, loff_t *ppos)
	83	{
	84	struct ieee80211_local *local = file->private_data;
	85
	86	rtnl_lock();
eecc4800	87	__ieee80211_suspend(&local->hw, NULL);
827b1fb4 JB	88	__ieee80211_resume(&local->hw);
	89	rtnl_unlock();
	90
	91	return count;
	92	}
	93
	94	static const struct file_operations reset_ops = {
	95	.write = reset_write,
	96	.open = mac80211_open_file_generic,
6038f373	97	.llseek = noop_llseek,
827b1fb4 JB	98	};
827b1fb4 JB	99
d3707d99 JB	100	static ssize_t noack_read(struct file file, char __user user_buf,
	101	size_t count, loff_t *ppos)
	102	{
	103	struct ieee80211_local *local = file->private_data;
d3707d99	104
07caf9d6 EP	105	return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
07caf9d6 EP	106	local->wifi_wme_noack_test);
d3707d99 JB	107	}
	108
	109	static ssize_t noack_write(struct file *file,
	110	const char __user *user_buf,
	111	size_t count, loff_t *ppos)
	112	{
	113	struct ieee80211_local *local = file->private_data;
	114	char buf[10];
	115	size_t len;
	116
	117	len = min(count, sizeof(buf) - 1);
	118	if (copy_from_user(buf, user_buf, len))
	119	return -EFAULT;
	120	buf[len] = '\0';
	121
	122	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
	123
	124	return count;
	125	}
	126
	127	static const struct file_operations noack_ops = {
	128	.read = noack_read,
	129	.write = noack_write,
6038f373 AB	130	.open = mac80211_open_file_generic,
6038f373 AB	131	.llseek = default_llseek,
d3707d99 JB	132	};
d3707d99 JB	133
50ae0cf1 KV	134	static ssize_t uapsd_queues_read(struct file file, char __user user_buf,
	135	size_t count, loff_t *ppos)
	136	{
	137	struct ieee80211_local *local = file->private_data;
07caf9d6 EP	138	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
07caf9d6 EP	139	local->uapsd_queues);
50ae0cf1 KV	140	}
	141
	142	static ssize_t uapsd_queues_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;
b38de31f	147	u8 val;
50ae0cf1 KV	148	int ret;
50ae0cf1 KV	149
b38de31f	150	ret = kstrtou8_from_user(user_buf, count, 0, &val);
50ae0cf1	151	if (ret)
b38de31f	152	return ret;
50ae0cf1 KV	153
	154	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
	155	return -ERANGE;
	156
	157	local->uapsd_queues = val;
	158
	159	return count;
	160	}
	161
	162	static const struct file_operations uapsd_queues_ops = {
	163	.read = uapsd_queues_read,
	164	.write = uapsd_queues_write,
6038f373 AB	165	.open = mac80211_open_file_generic,
6038f373 AB	166	.llseek = default_llseek,
50ae0cf1 KV	167	};
	168
	169	static ssize_t uapsd_max_sp_len_read(struct file file, char __user user_buf,
	170	size_t count, loff_t *ppos)
	171	{
	172	struct ieee80211_local *local = file->private_data;
50ae0cf1	173
07caf9d6 EP	174	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
07caf9d6 EP	175	local->uapsd_max_sp_len);
50ae0cf1 KV	176	}
	177
	178	static ssize_t uapsd_max_sp_len_write(struct file *file,
	179	const char __user *user_buf,
	180	size_t count, loff_t *ppos)
	181	{
	182	struct ieee80211_local *local = file->private_data;
	183	unsigned long val;
	184	char buf[10];
	185	size_t len;
	186	int ret;
	187
	188	len = min(count, sizeof(buf) - 1);
	189	if (copy_from_user(buf, user_buf, len))
	190	return -EFAULT;
	191	buf[len] = '\0';
	192
	193	ret = strict_strtoul(buf, 0, &val);
	194
	195	if (ret)
	196	return -EINVAL;
	197
	198	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
	199	return -ERANGE;
	200
	201	local->uapsd_max_sp_len = val;
	202
	203	return count;
	204	}
	205
	206	static const struct file_operations uapsd_max_sp_len_ops = {
	207	.read = uapsd_max_sp_len_read,
	208	.write = uapsd_max_sp_len_write,
6038f373 AB	209	.open = mac80211_open_file_generic,
6038f373 AB	210	.llseek = default_llseek,
50ae0cf1 KV	211	};
50ae0cf1 KV	212
199d69f2 BP	213	static ssize_t channel_type_read(struct file file, char __user user_buf,
	214	size_t count, loff_t *ppos)
	215	{
	216	struct ieee80211_local *local = file->private_data;
	217	const char *buf;
	218
	219	switch (local->hw.conf.channel_type) {
	220	case NL80211_CHAN_NO_HT:
	221	buf = "no ht\n";
	222	break;
	223	case NL80211_CHAN_HT20:
	224	buf = "ht20\n";
	225	break;
	226	case NL80211_CHAN_HT40MINUS:
	227	buf = "ht40-\n";
	228	break;
	229	case NL80211_CHAN_HT40PLUS:
	230	buf = "ht40+\n";
	231	break;
	232	default:
	233	buf = "???";
	234	break;
	235	}
	236
	237	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	238	}
	239
279daf64 BG	240	static ssize_t hwflags_read(struct file file, char __user user_buf,
	241	size_t count, loff_t *ppos)
	242	{
	243	struct ieee80211_local *local = file->private_data;
	244	int mxln = 500;
	245	ssize_t rv;
	246	char *buf = kzalloc(mxln, GFP_KERNEL);
	247	int sf = 0; /* how many written so far */
	248
d15b8459 JP	249	if (!buf)
	250	return 0;
	251
279daf64 BG	252	sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
	253	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
	254	sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
	255	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
	256	sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
	257	if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
	258	sf += snprintf(buf + sf, mxln - sf,
	259	"HOST_BCAST_PS_BUFFERING\n");
	260	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
	261	sf += snprintf(buf + sf, mxln - sf,
	262	"2GHZ_SHORT_SLOT_INCAPABLE\n");
	263	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
	264	sf += snprintf(buf + sf, mxln - sf,
	265	"2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
	266	if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
	267	sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
	268	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
	269	sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
	270	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
	271	sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
	272	if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
	273	sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
	274	if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
	275	sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
	276	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
	277	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
	278	if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
	279	sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
	280	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
	281	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
	282	if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
	283	sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
	284	if (local->hw.flags & IEEE80211_HW_BEACON_FILTER)
	285	sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER\n");
	286	if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
	287	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
	288	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
	289	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
	290	if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
	291	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
	292	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
	293	sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
	294	if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
	295	sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
	296	if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)
	297	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI\n");
	298	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
	299	sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
	300	if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
	301	sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
edf6b784 AN	302	if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
edf6b784 AN	303	sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
279daf64 BG	304
	305	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	306	kfree(buf);
	307	return rv;
	308	}
199d69f2	309
db2e6bd4 JB	310	static ssize_t queues_read(struct file file, char __user user_buf,
	311	size_t count, loff_t *ppos)
	312	{
	313	struct ieee80211_local *local = file->private_data;
	314	unsigned long flags;
	315	char buf[IEEE80211_MAX_QUEUES * 20];
	316	int q, res = 0;
	317
	318	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	319	for (q = 0; q < local->hw.queues; q++)
	320	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	321	local->queue_stop_reasons[q],
3b8d81e0	322	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	323	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	324
	325	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	326	}
	327
279daf64 BG	328	DEBUGFS_READONLY_FILE_OPS(hwflags);
	329	DEBUGFS_READONLY_FILE_OPS(channel_type);
	330	DEBUGFS_READONLY_FILE_OPS(queues);
db2e6bd4	331
e9f207f0 JB	332	/* statistics stuff */
e9f207f0 JB	333
e9f207f0 JB	334	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	335	char __user *userbuf,
	336	size_t count, loff_t *ppos,
	337	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	338	int buflen))
	339	{
	340	struct ieee80211_low_level_stats stats;
	341	char buf[20];
	342	int res;
	343
75636525	344	rtnl_lock();
24487981	345	res = drv_get_stats(local, &stats);
e9f207f0	346	rtnl_unlock();
24487981 JB	347	if (res)
	348	return res;
	349	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	350	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	351	}
	352
	353	#define DEBUGFS_DEVSTATS_FILE(name) \
	354	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	355	char *buf, int buflen) \
	356	{ \
	357	return scnprintf(buf, buflen, "%u\n", stats->name); \
	358	} \
	359	static ssize_t stats_ ##name## _read(struct file *file, \
	360	char __user *userbuf, \
	361	size_t count, loff_t *ppos) \
	362	{ \
	363	return format_devstat_counter(file->private_data, \
	364	userbuf, \
	365	count, \
	366	ppos, \
	367	print_devstats_##name); \
	368	} \
	369	\
	370	static const struct file_operations stats_ ##name## _ops = { \
	371	.read = stats_ ##name## _read, \
	372	.open = mac80211_open_file_generic, \
2b18ab36	373	.llseek = generic_file_llseek, \
e9f207f0 JB	374	};
e9f207f0 JB	375
2826bcd8 FF	376	#define DEBUGFS_STATS_ADD(name, field) \
	377	debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
	378	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	379	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	380
e9f207f0 JB	381	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	382	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	383	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	384	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	385
e9f207f0 JB	386	void debugfs_hw_add(struct ieee80211_local *local)
	387	{
	388	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	389	struct dentry *statsd;
	390
	391	if (!phyd)
	392	return;
	393
e9f207f0 JB	394	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	395
e9f207f0	396	DEBUGFS_ADD(frequency);
e9f207f0	397	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	398	DEBUGFS_ADD(wep_iv);
db2e6bd4	399	DEBUGFS_ADD(queues);
827b1fb4	400	DEBUGFS_ADD_MODE(reset, 0200);
d3707d99	401	DEBUGFS_ADD(noack);
50ae0cf1 KV	402	DEBUGFS_ADD(uapsd_queues);
50ae0cf1 KV	403	DEBUGFS_ADD(uapsd_max_sp_len);
199d69f2	404	DEBUGFS_ADD(channel_type);
279daf64	405	DEBUGFS_ADD(hwflags);
83bdf2a1 BG	406	DEBUGFS_ADD(user_power);
83bdf2a1 BG	407	DEBUGFS_ADD(power);
e9f207f0 JB	408
e9f207f0 JB	409	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	410
	411	/* if the dir failed, don't put all the other things into the root! */
	412	if (!statsd)
	413	return;
	414
2826bcd8 FF	415	DEBUGFS_STATS_ADD(transmitted_fragment_count,
	416	local->dot11TransmittedFragmentCount);
	417	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
	418	local->dot11MulticastTransmittedFrameCount);
	419	DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
	420	DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
	421	DEBUGFS_STATS_ADD(multiple_retry_count,
	422	local->dot11MultipleRetryCount);
	423	DEBUGFS_STATS_ADD(frame_duplicate_count,
	424	local->dot11FrameDuplicateCount);
	425	DEBUGFS_STATS_ADD(received_fragment_count,
	426	local->dot11ReceivedFragmentCount);
	427	DEBUGFS_STATS_ADD(multicast_received_frame_count,
	428	local->dot11MulticastReceivedFrameCount);
	429	DEBUGFS_STATS_ADD(transmitted_frame_count,
	430	local->dot11TransmittedFrameCount);
e9f207f0	431	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
2826bcd8 FF	432	DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
	433	DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
	434	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
	435	local->tx_handlers_drop_unencrypted);
	436	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
	437	local->tx_handlers_drop_fragment);
	438	DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
	439	local->tx_handlers_drop_wep);
	440	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
	441	local->tx_handlers_drop_not_assoc);
	442	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
	443	local->tx_handlers_drop_unauth_port);
	444	DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
	445	DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
	446	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
	447	local->rx_handlers_drop_nullfunc);
	448	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
	449	local->rx_handlers_drop_defrag);
	450	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
	451	local->rx_handlers_drop_short);
	452	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
	453	local->rx_handlers_drop_passive_scan);
	454	DEBUGFS_STATS_ADD(tx_expand_skb_head,
	455	local->tx_expand_skb_head);
	456	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
	457	local->tx_expand_skb_head_cloned);
	458	DEBUGFS_STATS_ADD(rx_expand_skb_head,
	459	local->rx_expand_skb_head);
	460	DEBUGFS_STATS_ADD(rx_expand_skb_head2,
	461	local->rx_expand_skb_head2);
	462	DEBUGFS_STATS_ADD(rx_handlers_fragments,
	463	local->rx_handlers_fragments);
	464	DEBUGFS_STATS_ADD(tx_status_drop,
	465	local->tx_status_drop);
e9f207f0	466	#endif
2826bcd8 FF	467	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	468	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	469	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	470	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	471	}