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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * mac80211 debugfs for wireless PHYs
 *
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 * Copyright (C) 2018 - 2019 Intel Corporation
 */

#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");

static ssize_t aqm_read(struct file *file,
			char __user *user_buf,
			size_t count,
			loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	struct fq *fq = &local->fq;
	char buf[200];
	int len = 0;

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

	len = scnprintf(buf, sizeof(buf),
			"access name value\n"
			"R fq_flows_cnt %u\n"
			"R fq_backlog %u\n"
			"R fq_overlimit %u\n"
			"R fq_overmemory %u\n"
			"R fq_collisions %u\n"
			"R fq_memory_usage %u\n"
			"RW fq_memory_limit %u\n"
			"RW fq_limit %u\n"
			"RW fq_quantum %u\n",
			fq->flows_cnt,
			fq->backlog,
			fq->overmemory,
			fq->overlimit,
			fq->collisions,
			fq->memory_usage,
			fq->memory_limit,
			fq->limit,
			fq->quantum);

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

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

static ssize_t aqm_write(struct file *file,
			 const char __user *user_buf,
			 size_t count,
			 loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	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_memory_limit %u", &local->fq.memory_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 = simple_open,
	.llseek = default_llseek,
};

static ssize_t force_tx_status_read(struct file *file,
				    char __user *user_buf,
				    size_t count,
				    loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[3];
	int len = 0;

	len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);

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

static ssize_t force_tx_status_write(struct file *file,
				     const char __user *user_buf,
				     size_t count,
				     loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	char buf[3];
	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 (buf[0] == '0' && buf[1] == '\0')
		local->force_tx_status = 0;
	else if (buf[0] == '1' && buf[1] == '\0')
		local->force_tx_status = 1;
	else
		return -EINVAL;

	return count;
}

static const struct file_operations force_tx_status_ops = {
	.write = force_tx_status_write,
	.read = force_tx_status_read,
	.open = simple_open,
	.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),
	FLAG(REPORTS_LOW_ACK),
	FLAG(SUPPORTS_TX_FRAG),
	FLAG(SUPPORTS_TDLS_BUFFER_STA),
	FLAG(DEAUTH_NEED_MGD_TX_PREP),
	FLAG(DOESNT_SUPPORT_QOS_NDP),
	FLAG(BUFF_MMPDU_TXQ),
	FLAG(SUPPORTS_VHT_EXT_NSS_BW),
	FLAG(STA_MMPDU_TXQ),
	FLAG(TX_STATUS_NO_AMPDU_LEN),
	FLAG(SUPPORTS_MULTI_BSSID),
	FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
	FLAG(EXT_KEY_ID_NATIVE),
	FLAG(NO_AMPDU_KEYBORDER_SUPPORT),
#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 misc_read(struct file *file, char __user *user_buf,
			 size_t count, loff_t *ppos)
{
	struct ieee80211_local *local = file->private_data;
	/* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
	size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
	char *buf;
	char *pos, *end;
	ssize_t rv;
	int i;
	int ln;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	pos = buf;
	end = buf + bufsz - 1;

	pos += scnprintf(pos, end - pos, "pending:\n");

	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
		ln = skb_queue_len(&local->pending[i]);
		pos += scnprintf(pos, end - pos, "[%i] %d\n",
				 i, ln);
	}

	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);
DEBUGFS_READONLY_FILE_OPS(misc);

/* 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(rate_ctrl_alg);
	DEBUGFS_ADD(queues);
	DEBUGFS_ADD(misc);
#ifdef CONFIG_PM
	DEBUGFS_ADD_MODE(reset, 0200);
#endif
	DEBUGFS_ADD(hwflags);
	DEBUGFS_ADD(user_power);
	DEBUGFS_ADD(power);
	DEBUGFS_ADD_MODE(force_tx_status, 0600);

	if (local->ops->wake_tx_queue)
		DEBUGFS_ADD_MODE(aqm, 0600);

	debugfs_create_u16("airtime_flags", 0600,
			   phyd, &local->airtime_flags);

	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
7f904d7e	1	// SPDX-License-Identifier: GPL-2.0-only
e9f207f0 JB	2	/*
	3	* mac80211 debugfs for wireless PHYs
	4	*
	5	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e	6	* Copyright 2013-2014 Intel Mobile Communications GmbH
caf56338	7	* Copyright (C) 2018 - 2019 Intel Corporation
e9f207f0 JB	8	*/
	9
	10	#include <linux/debugfs.h>
	11	#include <linux/rtnetlink.h>
9399b86c	12	#include <linux/vmalloc.h>
e9f207f0	13	#include "ieee80211_i.h"
24487981	14	#include "driver-ops.h"
2c8dccc7	15	#include "rate.h"
e9f207f0 JB	16	#include "debugfs.h"
e9f207f0 JB	17
07caf9d6 EP	18	#define DEBUGFS_FORMAT_BUFFER_SIZE 100
	19
	20	int mac80211_format_buffer(char __user *userbuf, size_t count,
	21	loff_t ppos, char fmt, ...)
	22	{
	23	va_list args;
	24	char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
	25	int res;
	26
	27	va_start(args, fmt);
	28	res = vscnprintf(buf, sizeof(buf), fmt, args);
	29	va_end(args);
	30
	31	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	32	}
	33
279daf64	34	#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
e9f207f0 JB	35	static ssize_t name## _read(struct file file, char __user userbuf, \
	36	size_t count, loff_t *ppos) \
	37	{ \
	38	struct ieee80211_local *local = file->private_data; \
e9f207f0	39	\
07caf9d6 EP	40	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	41	fmt "\n", ##value); \
279daf64 BG	42	}
	43
	44	#define DEBUGFS_READONLY_FILE_OPS(name) \
e9f207f0 JB	45	static const struct file_operations name## _ops = { \
e9f207f0 JB	46	.read = name## _read, \
234e3405	47	.open = simple_open, \
2b18ab36	48	.llseek = generic_file_llseek, \
e9f207f0 JB	49	};
e9f207f0 JB	50
279daf64 BG	51	#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
	52	DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
	53	DEBUGFS_READONLY_FILE_OPS(name)
	54
e9f207f0	55	#define DEBUGFS_ADD(name) \
7bcfaf2f	56	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
e9f207f0	57
827b1fb4	58	#define DEBUGFS_ADD_MODE(name, mode) \
7bcfaf2f	59	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
e9f207f0 JB	60
e9f207f0 JB	61
83bdf2a1 BG	62	DEBUGFS_READONLY_FILE(user_power, "%d",
	63	local->user_power_level);
	64	DEBUGFS_READONLY_FILE(power, "%d",
	65	local->hw.conf.power_level);
07caf9d6	66	DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
e9f207f0	67	local->total_ps_buffered);
07caf9d6	68	DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
e9f207f0	69	local->wep_iv & 0xffffff);
07caf9d6	70	DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
af65cd96	71	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
3b5d665b	72
8d51dbb8 THJ	73	static ssize_t aqm_read(struct file *file,
	74	char __user *user_buf,
	75	size_t count,
	76	loff_t *ppos)
9399b86c	77	{
8d51dbb8	78	struct ieee80211_local *local = file->private_data;
9399b86c	79	struct fq *fq = &local->fq;
8d51dbb8	80	char buf[200];
9399b86c	81	int len = 0;
9399b86c MK	82
	83	spin_lock_bh(&local->fq.lock);
	84	rcu_read_lock();
	85
8d51dbb8 THJ	86	len = scnprintf(buf, sizeof(buf),
	87	"access name value\n"
	88	"R fq_flows_cnt %u\n"
	89	"R fq_backlog %u\n"
	90	"R fq_overlimit %u\n"
2a4e675d	91	"R fq_overmemory %u\n"
8d51dbb8	92	"R fq_collisions %u\n"
2a4e675d THJ	93	"R fq_memory_usage %u\n"
2a4e675d THJ	94	"RW fq_memory_limit %u\n"
8d51dbb8 THJ	95	"RW fq_limit %u\n"
	96	"RW fq_quantum %u\n",
	97	fq->flows_cnt,
	98	fq->backlog,
2a4e675d	99	fq->overmemory,
8d51dbb8 THJ	100	fq->overlimit,
8d51dbb8 THJ	101	fq->collisions,
2a4e675d THJ	102	fq->memory_usage,
2a4e675d THJ	103	fq->memory_limit,
8d51dbb8 THJ	104	fq->limit,
8d51dbb8 THJ	105	fq->quantum);
9399b86c MK	106
	107	rcu_read_unlock();
	108	spin_unlock_bh(&local->fq.lock);
	109
9399b86c	110	return simple_read_from_buffer(user_buf, count, ppos,
8d51dbb8	111	buf, len);
9399b86c MK	112	}
	113
	114	static ssize_t aqm_write(struct file *file,
	115	const char __user *user_buf,
	116	size_t count,
	117	loff_t *ppos)
	118	{
8d51dbb8	119	struct ieee80211_local *local = file->private_data;
9399b86c MK	120	char buf[100];
	121	size_t len;
	122
	123	if (count > sizeof(buf))
	124	return -EINVAL;
	125
	126	if (copy_from_user(buf, user_buf, count))
	127	return -EFAULT;
	128
	129	buf[sizeof(buf) - 1] = '\0';
	130	len = strlen(buf);
	131	if (len > 0 && buf[len-1] == '\n')
	132	buf[len-1] = 0;
	133
	134	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
	135	return count;
2a4e675d THJ	136	else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
2a4e675d THJ	137	return count;
9399b86c MK	138	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
	139	return count;
	140
	141	return -EINVAL;
	142	}
	143
	144	static const struct file_operations aqm_ops = {
	145	.write = aqm_write,
	146	.read = aqm_read,
8d51dbb8	147	.open = simple_open,
9399b86c MK	148	.llseek = default_llseek,
	149	};
	150
276d9e82 JN	151	static ssize_t force_tx_status_read(struct file *file,
	152	char __user *user_buf,
	153	size_t count,
	154	loff_t *ppos)
	155	{
	156	struct ieee80211_local *local = file->private_data;
	157	char buf[3];
	158	int len = 0;
	159
	160	len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
	161
	162	return simple_read_from_buffer(user_buf, count, ppos,
	163	buf, len);
	164	}
	165
	166	static ssize_t force_tx_status_write(struct file *file,
	167	const char __user *user_buf,
	168	size_t count,
	169	loff_t *ppos)
	170	{
	171	struct ieee80211_local *local = file->private_data;
	172	char buf[3];
	173	size_t len;
	174
	175	if (count > sizeof(buf))
	176	return -EINVAL;
	177
	178	if (copy_from_user(buf, user_buf, count))
	179	return -EFAULT;
	180
	181	buf[sizeof(buf) - 1] = '\0';
	182	len = strlen(buf);
	183	if (len > 0 && buf[len - 1] == '\n')
	184	buf[len - 1] = 0;
	185
	186	if (buf[0] == '0' && buf[1] == '\0')
	187	local->force_tx_status = 0;
	188	else if (buf[0] == '1' && buf[1] == '\0')
	189	local->force_tx_status = 1;
	190	else
	191	return -EINVAL;
	192
	193	return count;
	194	}
	195
	196	static const struct file_operations force_tx_status_ops = {
	197	.write = force_tx_status_write,
	198	.read = force_tx_status_read,
	199	.open = simple_open,
	200	.llseek = default_llseek,
	201	};
	202
2ad4814f	203	#ifdef CONFIG_PM
827b1fb4 JB	204	static ssize_t reset_write(struct file file, const char __user user_buf,
	205	size_t count, loff_t *ppos)
	206	{
	207	struct ieee80211_local *local = file->private_data;
	208
	209	rtnl_lock();
eecc4800	210	__ieee80211_suspend(&local->hw, NULL);
827b1fb4 JB	211	__ieee80211_resume(&local->hw);
	212	rtnl_unlock();
	213
	214	return count;
	215	}
	216
	217	static const struct file_operations reset_ops = {
	218	.write = reset_write,
234e3405	219	.open = simple_open,
6038f373	220	.llseek = noop_llseek,
827b1fb4	221	};
2ad4814f	222	#endif
827b1fb4	223
68920c97	224	static const char *hw_flag_names[] = {
30686bf7 JB	225	#define FLAG(F) [IEEE80211_HW_##F] = #F
	226	FLAG(HAS_RATE_CONTROL),
	227	FLAG(RX_INCLUDES_FCS),
	228	FLAG(HOST_BROADCAST_PS_BUFFERING),
	229	FLAG(SIGNAL_UNSPEC),
	230	FLAG(SIGNAL_DBM),
	231	FLAG(NEED_DTIM_BEFORE_ASSOC),
	232	FLAG(SPECTRUM_MGMT),
	233	FLAG(AMPDU_AGGREGATION),
	234	FLAG(SUPPORTS_PS),
	235	FLAG(PS_NULLFUNC_STACK),
	236	FLAG(SUPPORTS_DYNAMIC_PS),
	237	FLAG(MFP_CAPABLE),
	238	FLAG(WANT_MONITOR_VIF),
	239	FLAG(NO_AUTO_VIF),
	240	FLAG(SW_CRYPTO_CONTROL),
	241	FLAG(SUPPORT_FAST_XMIT),
	242	FLAG(REPORTS_TX_ACK_STATUS),
	243	FLAG(CONNECTION_MONITOR),
	244	FLAG(QUEUE_CONTROL),
	245	FLAG(SUPPORTS_PER_STA_GTK),
	246	FLAG(AP_LINK_PS),
	247	FLAG(TX_AMPDU_SETUP_IN_HW),
	248	FLAG(SUPPORTS_RC_TABLE),
	249	FLAG(P2P_DEV_ADDR_FOR_INTF),
	250	FLAG(TIMING_BEACON_ONLY),
	251	FLAG(SUPPORTS_HT_CCK_RATES),
	252	FLAG(CHANCTX_STA_CSA),
	253	FLAG(SUPPORTS_CLONED_SKBS),
	254	FLAG(SINGLE_SCAN_ON_ALL_BANDS),
b98fb44f	255	FLAG(TDLS_WIDER_BW),
99e7ca44	256	FLAG(SUPPORTS_AMSDU_IN_AMPDU),
35afa588	257	FLAG(BEACON_TX_STATUS),
31104891	258	FLAG(NEEDS_UNIQUE_STA_ADDR),
412a6d80	259	FLAG(SUPPORTS_REORDERING_BUFFER),
c9c5962b	260	FLAG(USES_RSS),
6e0456b5 FF	261	FLAG(TX_AMSDU),
6e0456b5 FF	262	FLAG(TX_FRAG_LIST),
e8a24cd4	263	FLAG(REPORTS_LOW_ACK),
f3fe4e93	264	FLAG(SUPPORTS_TX_FRAG),
e2fb1b83	265	FLAG(SUPPORTS_TDLS_BUFFER_STA),
94ba9271	266	FLAG(DEAUTH_NEED_MGD_TX_PREP),
7c181f4f	267	FLAG(DOESNT_SUPPORT_QOS_NDP),
adf8ed01	268	FLAG(BUFF_MMPDU_TXQ),
09b4a4fa	269	FLAG(SUPPORTS_VHT_EXT_NSS_BW),
0eeb2b67	270	FLAG(STA_MMPDU_TXQ),
77f7ffdc	271	FLAG(TX_STATUS_NO_AMPDU_LEN),
caf56338 SS	272	FLAG(SUPPORTS_MULTI_BSSID),
caf56338 SS	273	FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
96fc6efb	274	FLAG(EXT_KEY_ID_NATIVE),
90cc4bd6	275	FLAG(NO_AMPDU_KEYBORDER_SUPPORT),
30686bf7 JB	276	#undef FLAG
	277	};
	278
279daf64 BG	279	static ssize_t hwflags_read(struct file file, char __user user_buf,
	280	size_t count, loff_t *ppos)
	281	{
	282	struct ieee80211_local *local = file->private_data;
30686bf7 JB	283	size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
	284	char *buf = kzalloc(bufsz, GFP_KERNEL);
	285	char pos = buf, end = buf + bufsz - 1;
279daf64	286	ssize_t rv;
30686bf7	287	int i;
279daf64	288
d15b8459	289	if (!buf)
30686bf7 JB	290	return -ENOMEM;
	291
	292	/* fail compilation if somebody adds or removes
	293	* a flag without updating the name array above
	294	*/
68920c97	295	BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
30686bf7 JB	296
	297	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
	298	if (test_bit(i, local->hw.flags))
4633dfc3	299	pos += scnprintf(pos, end - pos, "%s\n",
30686bf7 JB	300	hw_flag_names[i]);
30686bf7 JB	301	}
279daf64 BG	302
	303	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	304	kfree(buf);
	305	return rv;
	306	}
199d69f2	307
4a5eccaa BG	308	static ssize_t misc_read(struct file file, char __user user_buf,
	309	size_t count, loff_t *ppos)
	310	{
	311	struct ieee80211_local *local = file->private_data;
	312	/* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
	313	size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
b2347a32 DC	314	char *buf;
b2347a32 DC	315	char pos, end;
4a5eccaa BG	316	ssize_t rv;
	317	int i;
	318	int ln;
	319
b2347a32 DC	320	buf = kzalloc(bufsz, GFP_KERNEL);
	321	if (!buf)
	322	return -ENOMEM;
	323
	324	pos = buf;
	325	end = buf + bufsz - 1;
	326
4a5eccaa BG	327	pos += scnprintf(pos, end - pos, "pending:\n");
	328
	329	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
	330	ln = skb_queue_len(&local->pending[i]);
	331	pos += scnprintf(pos, end - pos, "[%i] %d\n",
	332	i, ln);
	333	}
	334
	335	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
	336	kfree(buf);
	337	return rv;
	338	}
	339
db2e6bd4 JB	340	static ssize_t queues_read(struct file file, char __user user_buf,
	341	size_t count, loff_t *ppos)
	342	{
	343	struct ieee80211_local *local = file->private_data;
	344	unsigned long flags;
	345	char buf[IEEE80211_MAX_QUEUES * 20];
	346	int q, res = 0;
	347
	348	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
	349	for (q = 0; q < local->hw.queues; q++)
	350	res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
	351	local->queue_stop_reasons[q],
3b8d81e0	352	skb_queue_len(&local->pending[q]));
db2e6bd4 JB	353	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
	354
	355	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
	356	}
	357
279daf64	358	DEBUGFS_READONLY_FILE_OPS(hwflags);
279daf64	359	DEBUGFS_READONLY_FILE_OPS(queues);
4a5eccaa	360	DEBUGFS_READONLY_FILE_OPS(misc);
db2e6bd4	361
e9f207f0 JB	362	/* statistics stuff */
e9f207f0 JB	363
e9f207f0 JB	364	static ssize_t format_devstat_counter(struct ieee80211_local *local,
	365	char __user *userbuf,
	366	size_t count, loff_t *ppos,
	367	int (printvalue)(struct ieee80211_low_level_stats stats, char *buf,
	368	int buflen))
	369	{
	370	struct ieee80211_low_level_stats stats;
	371	char buf[20];
	372	int res;
	373
75636525	374	rtnl_lock();
24487981	375	res = drv_get_stats(local, &stats);
e9f207f0	376	rtnl_unlock();
24487981 JB	377	if (res)
	378	return res;
	379	res = printvalue(&stats, buf, sizeof(buf));
e9f207f0 JB	380	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
	381	}
	382
	383	#define DEBUGFS_DEVSTATS_FILE(name) \
	384	static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
	385	char *buf, int buflen) \
	386	{ \
	387	return scnprintf(buf, buflen, "%u\n", stats->name); \
	388	} \
	389	static ssize_t stats_ ##name## _read(struct file *file, \
	390	char __user *userbuf, \
	391	size_t count, loff_t *ppos) \
	392	{ \
	393	return format_devstat_counter(file->private_data, \
	394	userbuf, \
	395	count, \
	396	ppos, \
	397	print_devstats_##name); \
	398	} \
	399	\
	400	static const struct file_operations stats_ ##name## _ops = { \
	401	.read = stats_ ##name## _read, \
234e3405	402	.open = simple_open, \
2b18ab36	403	.llseek = generic_file_llseek, \
e9f207f0 JB	404	};
e9f207f0 JB	405
f1160434 JB	406	#define DEBUGFS_STATS_ADD(name) \
f1160434 JB	407	debugfs_create_u32(#name, 0400, statsd, &local->name);
2826bcd8	408	#define DEBUGFS_DEVSTATS_ADD(name) \
7bcfaf2f	409	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
e9f207f0	410
e9f207f0 JB	411	DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
	412	DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
	413	DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
	414	DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
	415
e9f207f0 JB	416	void debugfs_hw_add(struct ieee80211_local *local)
	417	{
	418	struct dentry *phyd = local->hw.wiphy->debugfsdir;
	419	struct dentry *statsd;
	420
	421	if (!phyd)
	422	return;
	423
e9f207f0 JB	424	local->debugfs.keys = debugfs_create_dir("keys", phyd);
e9f207f0 JB	425
e9f207f0	426	DEBUGFS_ADD(total_ps_buffered);
e9f207f0	427	DEBUGFS_ADD(wep_iv);
bddb2afc	428	DEBUGFS_ADD(rate_ctrl_alg);
db2e6bd4	429	DEBUGFS_ADD(queues);
4a5eccaa	430	DEBUGFS_ADD(misc);
2ad4814f	431	#ifdef CONFIG_PM
827b1fb4	432	DEBUGFS_ADD_MODE(reset, 0200);
2ad4814f	433	#endif
279daf64	434	DEBUGFS_ADD(hwflags);
83bdf2a1 BG	435	DEBUGFS_ADD(user_power);
83bdf2a1 BG	436	DEBUGFS_ADD(power);
276d9e82	437	DEBUGFS_ADD_MODE(force_tx_status, 0600);
8d51dbb8 THJ	438
	439	if (local->ops->wake_tx_queue)
	440	DEBUGFS_ADD_MODE(aqm, 0600);
e9f207f0	441
b4809e94 THJ	442	debugfs_create_u16("airtime_flags", 0600,
	443	phyd, &local->airtime_flags);
	444
e9f207f0	445	statsd = debugfs_create_dir("statistics", phyd);
e9f207f0 JB	446
	447	/* if the dir failed, don't put all the other things into the root! */
	448	if (!statsd)
	449	return;
	450
c206ca67	451	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
f1160434 JB	452	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
	453	DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
	454	DEBUGFS_STATS_ADD(dot11FailedCount);
	455	DEBUGFS_STATS_ADD(dot11RetryCount);
	456	DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
	457	DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
	458	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
	459	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
	460	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
f1160434 JB	461	DEBUGFS_STATS_ADD(tx_handlers_drop);
	462	DEBUGFS_STATS_ADD(tx_handlers_queued);
	463	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
	464	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
	465	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
	466	DEBUGFS_STATS_ADD(rx_handlers_drop);
	467	DEBUGFS_STATS_ADD(rx_handlers_queued);
	468	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
	469	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
f1160434 JB	470	DEBUGFS_STATS_ADD(tx_expand_skb_head);
	471	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
	472	DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
	473	DEBUGFS_STATS_ADD(rx_handlers_fragments);
	474	DEBUGFS_STATS_ADD(tx_status_drop);
e9f207f0	475	#endif
2826bcd8 FF	476	DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
	477	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
	478	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
	479	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
e9f207f0	480	}