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

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

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

#define DEBUGFS_FORMAT_BUFFER_SIZE 100

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

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

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

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

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

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

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

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


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

struct aqm_info {
	struct ieee80211_local *local;
	size_t size;
	size_t len;
	unsigned char buf[0];
};

#define AQM_HDR_LEN 200
#define AQM_HW_ENTRY_LEN 40
#define AQM_TXQ_ENTRY_LEN 110

static int aqm_open(struct inode *inode, struct file *file)
{
	struct ieee80211_local *local = inode->i_private;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	struct txq_info *txqi;
	struct fq *fq = &local->fq;
	struct aqm_info *info = NULL;
	int len = 0;
	int i;

	if (!local->ops->wake_tx_queue)
		return -EOPNOTSUPP;

	len += AQM_HDR_LEN;
	len += 6 * AQM_HW_ENTRY_LEN;

	rcu_read_lock();
	list_for_each_entry_rcu(sdata, &local->interfaces, list)
		len += AQM_TXQ_ENTRY_LEN;
	list_for_each_entry_rcu(sta, &local->sta_list, list)
		len += AQM_TXQ_ENTRY_LEN * ARRAY_SIZE(sta->sta.txq);
	rcu_read_unlock();

	info = vmalloc(len);
	if (!info)
		return -ENOMEM;

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

	file->private_data = info;
	info->local = local;
	info->size = len;
	len = 0;

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

	len += scnprintf(info->buf + len,
			 info->size - len,
			 "* vif\n"
			 "ifname addr ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");

	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
		txqi = to_txq_info(sdata->vif.txq);
		len += scnprintf(info->buf + len, info->size - len,
				 "%s %pM %u %u %u %u %u %u %u %u\n",
				 sdata->name,
				 sdata->vif.addr,
				 txqi->txq.ac,
				 txqi->tin.backlog_bytes,
				 txqi->tin.backlog_packets,
				 txqi->tin.flows,
				 txqi->tin.overlimit,
				 txqi->tin.collisions,
				 txqi->tin.tx_bytes,
				 txqi->tin.tx_packets);
	}

	len += scnprintf(info->buf + len,
			 info->size - len,
			 "* sta\n"
			 "ifname addr tid ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");

	list_for_each_entry_rcu(sta, &local->sta_list, list) {
		sdata = sta->sdata;
		for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
			txqi = to_txq_info(sta->sta.txq[i]);
			len += scnprintf(info->buf + len, info->size - len,
					 "%s %pM %d %d %u %u %u %u %u %u %u\n",
					 sdata->name,
					 sta->sta.addr,
					 txqi->txq.tid,
					 txqi->txq.ac,
					 txqi->tin.backlog_bytes,
					 txqi->tin.backlog_packets,
					 txqi->tin.flows,
					 txqi->tin.overlimit,
					 txqi->tin.collisions,
					 txqi->tin.tx_bytes,
					 txqi->tin.tx_packets);
		}
	}

	info->len = len;

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

	return 0;
}

static int aqm_release(struct inode *inode, struct file *file)
{
	vfree(file->private_data);
	return 0;
}

static ssize_t aqm_read(struct file *file,
			char __user *user_buf,
			size_t count,
			loff_t *ppos)
{
	struct aqm_info *info = file->private_data;

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

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

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

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

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

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

	return -EINVAL;
}

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

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

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

	return count;
}

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

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

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

	if (!buf)
		return -ENOMEM;

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

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

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

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

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

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

DEBUGFS_READONLY_FILE_OPS(hwflags);
DEBUGFS_READONLY_FILE_OPS(queues);

/* statistics stuff */

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

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

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

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

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

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

	if (!phyd)
		return;

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

	DEBUGFS_ADD(total_ps_buffered);
	DEBUGFS_ADD(wep_iv);
	DEBUGFS_ADD(queues);
#ifdef CONFIG_PM
	DEBUGFS_ADD_MODE(reset, 0200);
#endif
	DEBUGFS_ADD(hwflags);
	DEBUGFS_ADD(user_power);
	DEBUGFS_ADD(power);
	DEBUGFS_ADD_MODE(aqm, 0600);

	statsd = debugfs_create_dir("statistics", phyd);

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

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	DEBUGFS_STATS_ADD(dot11FailedCount);
	DEBUGFS_STATS_ADD(dot11RetryCount);
	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
	DEBUGFS_STATS_ADD(tx_handlers_drop);
	DEBUGFS_STATS_ADD(tx_handlers_queued);
	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	DEBUGFS_STATS_ADD(rx_handlers_drop);
	DEBUGFS_STATS_ADD(rx_handlers_queued);
	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	DEBUGFS_STATS_ADD(tx_status_drop);
#endif
	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* mac80211 debugfs for wireless PHYs
	3	*
	4	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e	5	* Copyright 2013-2014 Intel Mobile Communications GmbH
e9f207f0 JB	6	*
	7	* GPLv2
	8	*
	9	*/
	10
	11	#include <linux/debugfs.h>
	12	#include <linux/rtnetlink.h>
9399b86c	13	#include <linux/vmalloc.h>
e9f207f0	14	#include "ieee80211_i.h"
24487981	15	#include "driver-ops.h"
2c8dccc7	16	#include "rate.h"
e9f207f0 JB	17	#include "debugfs.h"
e9f207f0 JB	18
07caf9d6 EP	19	#define DEBUGFS_FORMAT_BUFFER_SIZE 100
	20
	21	int mac80211_format_buffer(char __user *userbuf, size_t count,
	22	loff_t ppos, char fmt, ...)
	23	{
	24	va_list args;
	25	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	26	int res;
	27
	28	va_start(args, fmt);
	29	res = vscnprintf(buf, sizeof(buf), fmt, args);
	30	va_end(args);
	31
	32	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	33	}
	34
279daf64	35	#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
e9f207f0 JB	36	static ssize_t name## _read(struct file file, char __user userbuf, \
	37	size_t count, loff_t *ppos) \
	38	{ \
	39	struct ieee80211_local *local = file->private_data; \
e9f207f0	40	\
07caf9d6 EP	41	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	42	fmt "\n", ##value); \
279daf64 BG	43	}
	44
	45	#define DEBUGFS_READONLY_FILE_OPS(name) \
e9f207f0 JB	46	static const struct file_operations name## _ops = { \
e9f207f0 JB	47	.read = name## _read, \
234e3405	48	.open = simple_open, \
2b18ab36	49	.llseek = generic_file_llseek, \
e9f207f0 JB	50	};
e9f207f0 JB	51
279daf64 BG	52	#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
	53	DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
	54	DEBUGFS_READONLY_FILE_OPS(name)
	55
e9f207f0	56	#define DEBUGFS_ADD(name) \
7bcfaf2f	57	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	58
827b1fb4	59	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	60	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	61
e9f207f0 JB	62
83bdf2a1 BG	63	DEBUGFS_READONLY_FILE(user_power, "%d",
	64	local->user_power_level);
	65	DEBUGFS_READONLY_FILE(power, "%d",
	66	local->hw.conf.power_level);
07caf9d6	67	DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
e9f207f0	68	local->total_ps_buffered);
07caf9d6	69	DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
e9f207f0	70	local->wep_iv & 0xffffff);
07caf9d6	71	DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
af65cd96	72	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b	73
9399b86c MK	74	struct aqm_info {
	75	struct ieee80211_local *local;
	76	size_t size;
	77	size_t len;
	78	unsigned char buf[0];
	79	};
	80
	81	#define AQM_HDR_LEN 200
	82	#define AQM_HW_ENTRY_LEN 40
	83	#define AQM_TXQ_ENTRY_LEN 110
	84
	85	static int aqm_open(struct inode inode, struct file file)
	86	{
	87	struct ieee80211_local *local = inode->i_private;
	88	struct ieee80211_sub_if_data *sdata;
	89	struct sta_info *sta;
	90	struct txq_info *txqi;
	91	struct fq *fq = &local->fq;
	92	struct aqm_info *info = NULL;
	93	int len = 0;
	94	int i;
	95
	96	if (!local->ops->wake_tx_queue)
	97	return -EOPNOTSUPP;
	98
	99	len += AQM_HDR_LEN;
	100	len += 6 * AQM_HW_ENTRY_LEN;
	101
	102	rcu_read_lock();
	103	list_for_each_entry_rcu(sdata, &local->interfaces, list)
	104	len += AQM_TXQ_ENTRY_LEN;
	105	list_for_each_entry_rcu(sta, &local->sta_list, list)
	106	len += AQM_TXQ_ENTRY_LEN * ARRAY_SIZE(sta->sta.txq);
	107	rcu_read_unlock();
	108
	109	info = vmalloc(len);
	110	if (!info)
	111	return -ENOMEM;
	112
	113	spin_lock_bh(&local->fq.lock);
	114	rcu_read_lock();
	115
	116	file->private_data = info;
	117	info->local = local;
	118	info->size = len;
	119	len = 0;
	120
	121	len += scnprintf(info->buf + len, info->size - len,
	122	"* hw\n"
	123	"access name value\n"
	124	"R fq_flows_cnt %u\n"
	125	"R fq_backlog %u\n"
	126	"R fq_overlimit %u\n"
	127	"R fq_collisions %u\n"
	128	"RW fq_limit %u\n"
	129	"RW fq_quantum %u\n",
	130	fq->flows_cnt,
	131	fq->backlog,
	132	fq->overlimit,
	133	fq->collisions,
	134	fq->limit,
	135	fq->quantum);
	136
	137	len += scnprintf(info->buf + len,
138	info->size - len,
139	"* vif\n"
140	"ifname addr ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");
141
142	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
143	txqi = to_txq_info(sdata->vif.txq);
144	len += scnprintf(info->buf + len, info->size - len,
145	"%s %pM %u %u %u %u %u %u %u %u\n",
146	sdata->name,
147	sdata->vif.addr,
148	txqi->txq.ac,
149	txqi->tin.backlog_bytes,
150	txqi->tin.backlog_packets,
151	txqi->tin.flows,
152	txqi->tin.overlimit,
153	txqi->tin.collisions,
154	txqi->tin.tx_bytes,
155	txqi->tin.tx_packets);
156	}
157
158	len += scnprintf(info->buf + len,
159	info->size - len,
160	"* sta\n"
161	"ifname addr tid ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");
162
163	list_for_each_entry_rcu(sta, &local->sta_list, list) {
164	sdata = sta->sdata;
165	for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
166	txqi = to_txq_info(sta->sta.txq[i]);
167	len += scnprintf(info->buf + len, info->size - len,
168	"%s %pM %d %d %u %u %u %u %u %u %u\n",
169	sdata->name,
170	sta->sta.addr,
171	txqi->txq.tid,
172	txqi->txq.ac,
173	txqi->tin.backlog_bytes,
174	txqi->tin.backlog_packets,
175	txqi->tin.flows,
176	txqi->tin.overlimit,
177	txqi->tin.collisions,
178	txqi->tin.tx_bytes,
179	txqi->tin.tx_packets);
180	}
181	}
182
183	info->len = len;
184
185	rcu_read_unlock();
186	spin_unlock_bh(&local->fq.lock);
187
188	return 0;
189	}
190
191	static int aqm_release(struct inode inode, struct file file)
192	{
193	vfree(file->private_data);
194	return 0;
195	}
196
197	static ssize_t aqm_read(struct file *file,
198	char __user *user_buf,
199	size_t count,
200	loff_t *ppos)
201	{
202	struct aqm_info *info = file->private_data;
203
204	return simple_read_from_buffer(user_buf, count, ppos,
205	info->buf, info->len);
206	}
207
208	static ssize_t aqm_write(struct file *file,
209	const char __user *user_buf,
210	size_t count,
211	loff_t *ppos)
212	{
213	struct aqm_info *info = file->private_data;
214	struct ieee80211_local *local = info->local;
215	char buf[100];
216	size_t len;
217
218	if (count > sizeof(buf))
219	return -EINVAL;
220
221	if (copy_from_user(buf, user_buf, count))
222	return -EFAULT;
223
224	buf[sizeof(buf) - 1] = '\0';
225	len = strlen(buf);
226	if (len > 0 && buf[len-1] == '\n')
227	buf[len-1] = 0;
228
229	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
230	return count;
231	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
232	return count;
233
234	return -EINVAL;
235	}
236
237	static const struct file_operations aqm_ops = {
238	.write = aqm_write,
239	.read = aqm_read,
240	.open = aqm_open,
241	.release = aqm_release,
242	.llseek = default_llseek,
243	};
244
2ad4814f	245	#ifdef CONFIG_PM
827b1fb4 JB	246	static ssize_t reset_write(struct file file, const char __user user_buf,
	247	size_t count, loff_t *ppos)
	248	{
	249	struct ieee80211_local *local = file->private_data;
	250
	251	rtnl_lock();
eecc4800	252	__ieee80211_suspend(&local->hw, NULL);
827b1fb4 JB	253	__ieee80211_resume(&local->hw);
	254	rtnl_unlock();
	255
	256	return count;
	257	}
	258
	259	static const struct file_operations reset_ops = {
	260	.write = reset_write,
234e3405	261	.open = simple_open,
6038f373	262	.llseek = noop_llseek,
827b1fb4	263	};
2ad4814f	264	#endif
827b1fb4	265
68920c97	266	static const char *hw_flag_names[] = {
30686bf7 JB	267	#define FLAG(F) [IEEE80211_HW_##F] = #F
	268	FLAG(HAS_RATE_CONTROL),
	269	FLAG(RX_INCLUDES_FCS),
	270	FLAG(HOST_BROADCAST_PS_BUFFERING),
	271	FLAG(SIGNAL_UNSPEC),
	272	FLAG(SIGNAL_DBM),
	273	FLAG(NEED_DTIM_BEFORE_ASSOC),
	274	FLAG(SPECTRUM_MGMT),
	275	FLAG(AMPDU_AGGREGATION),
	276	FLAG(SUPPORTS_PS),
	277	FLAG(PS_NULLFUNC_STACK),
	278	FLAG(SUPPORTS_DYNAMIC_PS),
	279	FLAG(MFP_CAPABLE),
	280	FLAG(WANT_MONITOR_VIF),
	281	FLAG(NO_AUTO_VIF),
	282	FLAG(SW_CRYPTO_CONTROL),
	283	FLAG(SUPPORT_FAST_XMIT),
	284	FLAG(REPORTS_TX_ACK_STATUS),
	285	FLAG(CONNECTION_MONITOR),
	286	FLAG(QUEUE_CONTROL),
	287	FLAG(SUPPORTS_PER_STA_GTK),
	288	FLAG(AP_LINK_PS),
	289	FLAG(TX_AMPDU_SETUP_IN_HW),
	290	FLAG(SUPPORTS_RC_TABLE),
	291	FLAG(P2P_DEV_ADDR_FOR_INTF),
	292	FLAG(TIMING_BEACON_ONLY),
	293	FLAG(SUPPORTS_HT_CCK_RATES),
	294	FLAG(CHANCTX_STA_CSA),
	295	FLAG(SUPPORTS_CLONED_SKBS),
	296	FLAG(SINGLE_SCAN_ON_ALL_BANDS),
b98fb44f	297	FLAG(TDLS_WIDER_BW),
99e7ca44	298	FLAG(SUPPORTS_AMSDU_IN_AMPDU),
35afa588	299	FLAG(BEACON_TX_STATUS),
31104891	300	FLAG(NEEDS_UNIQUE_STA_ADDR),
412a6d80	301	FLAG(SUPPORTS_REORDERING_BUFFER),
c9c5962b	302	FLAG(USES_RSS),
6e0456b5 FF	303	FLAG(TX_AMSDU),
6e0456b5 FF	304	FLAG(TX_FRAG_LIST),
30686bf7 JB	305	#undef FLAG
	306	};
	307
279daf64 BG	308	static ssize_t hwflags_read(struct file file, char __user user_buf,
	309	size_t count, loff_t *ppos)
	310	{
	311	struct ieee80211_local *local = file->private_data;
30686bf7 JB	312	size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
	313	char *buf = kzalloc(bufsz, GFP_KERNEL);
	314	char pos = buf, end = buf + bufsz - 1;
279daf64	315	ssize_t rv;
30686bf7	316	int i;
279daf64	317
d15b8459	318	if (!buf)
30686bf7 JB	319	return -ENOMEM;
	320
	321	/* fail compilation if somebody adds or removes
	322	* a flag without updating the name array above
	323	*/
68920c97	324	BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
30686bf7 JB	325
	326	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
	327	if (test_bit(i, local->hw.flags))
4633dfc3	328	pos += scnprintf(pos, end - pos, "%s\n",
30686bf7 JB	329	hw_flag_names[i]);
30686bf7 JB	330	}
279daf64 BG	331
	332	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	333	kfree(buf);
	334	return rv;
	335	}
199d69f2	336
db2e6bd4 JB	337	static ssize_t queues_read(struct file file, char __user user_buf,
	338	size_t count, loff_t *ppos)
	339	{
	340	struct ieee80211_local *local = file->private_data;
	341	unsigned long flags;
	342	char buf[IEEE80211_MAX_QUEUES * 20];
	343	int q, res = 0;
	344
	345	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	346	for (q = 0; q < local->hw.queues; q++)
	347	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	348	local->queue_stop_reasons[q],
3b8d81e0	349	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	350	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	351
	352	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	353	}
	354
279daf64	355	DEBUGFS_READONLY_FILE_OPS(hwflags);
279daf64	356	DEBUGFS_READONLY_FILE_OPS(queues);
db2e6bd4	357
e9f207f0 JB	358	/* statistics stuff */
e9f207f0 JB	359
e9f207f0 JB	360	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	361	char __user *userbuf,
	362	size_t count, loff_t *ppos,
	363	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	364	int buflen))
	365	{
	366	struct ieee80211_low_level_stats stats;
	367	char buf[20];
	368	int res;
	369
75636525	370	rtnl_lock();
24487981	371	res = drv_get_stats(local, &stats);
e9f207f0	372	rtnl_unlock();
24487981 JB	373	if (res)
	374	return res;
	375	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	376	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	377	}
	378
	379	#define DEBUGFS_DEVSTATS_FILE(name) \
	380	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	381	char *buf, int buflen) \
	382	{ \
	383	return scnprintf(buf, buflen, "%u\n", stats->name); \
	384	} \
	385	static ssize_t stats_ ##name## _read(struct file *file, \
	386	char __user *userbuf, \
	387	size_t count, loff_t *ppos) \
	388	{ \
	389	return format_devstat_counter(file->private_data, \
	390	userbuf, \
	391	count, \
	392	ppos, \
	393	print_devstats_##name); \
	394	} \
	395	\
	396	static const struct file_operations stats_ ##name## _ops = { \
	397	.read = stats_ ##name## _read, \
234e3405	398	.open = simple_open, \
2b18ab36	399	.llseek = generic_file_llseek, \
e9f207f0 JB	400	};
e9f207f0 JB	401
f1160434 JB	402	#define DEBUGFS_STATS_ADD(name) \
f1160434 JB	403	debugfs_create_u32(#name, 0400, statsd, &local->name);
2826bcd8	404	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	405	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	406
e9f207f0 JB	407	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	408	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	409	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	410	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	411
e9f207f0 JB	412	void debugfs_hw_add(struct ieee80211_local *local)
	413	{
	414	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	415	struct dentry *statsd;
	416
	417	if (!phyd)
	418	return;
	419
e9f207f0 JB	420	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	421
e9f207f0	422	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	423	DEBUGFS_ADD(wep_iv);
db2e6bd4	424	DEBUGFS_ADD(queues);
2ad4814f	425	#ifdef CONFIG_PM
827b1fb4	426	DEBUGFS_ADD_MODE(reset, 0200);
2ad4814f	427	#endif
279daf64	428	DEBUGFS_ADD(hwflags);
83bdf2a1 BG	429	DEBUGFS_ADD(user_power);
83bdf2a1 BG	430	DEBUGFS_ADD(power);
9399b86c	431	DEBUGFS_ADD_MODE(aqm, 0600);
e9f207f0 JB	432
e9f207f0 JB	433	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	434
	435	/* if the dir failed, don't put all the other things into the root! */
	436	if (!statsd)
	437	return;
	438
c206ca67	439	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
f1160434 JB	440	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	441	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	442	DEBUGFS_STATS_ADD(dot11FailedCount);
	443	DEBUGFS_STATS_ADD(dot11RetryCount);
	444	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	445	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	446	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	447	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	448	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
f1160434 JB	449	DEBUGFS_STATS_ADD(tx_handlers_drop);
	450	DEBUGFS_STATS_ADD(tx_handlers_queued);
	451	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	452	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	453	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	454	DEBUGFS_STATS_ADD(rx_handlers_drop);
	455	DEBUGFS_STATS_ADD(rx_handlers_queued);
	456	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	457	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
f1160434 JB	458	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	459	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	460	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	461	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	462	DEBUGFS_STATS_ADD(tx_status_drop);
e9f207f0	463	#endif
2826bcd8 FF	464	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	465	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	466	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	467	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	468	}