[mirror_ubuntu-hirsute-kernel.git] / net / mac80211 / debugfs_netdev.c

/*
 * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz>
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
#include <net/mac80211.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "ieee80211_rate.h"
#include "debugfs.h"
#include "debugfs_netdev.h"

static ssize_t ieee80211_if_read(
	struct ieee80211_sub_if_data *sdata,
	char __user *userbuf,
	size_t count, loff_t *ppos,
	ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
{
	char buf[70];
	ssize_t ret = -EINVAL;

	read_lock(&dev_base_lock);
	if (sdata->dev->reg_state == NETREG_REGISTERED) {
		ret = (*format)(sdata, buf, sizeof(buf));
		ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}
	read_unlock(&dev_base_lock);
	return ret;
}

#define IEEE80211_IF_FMT(name, field, format_string)			\
static ssize_t ieee80211_if_fmt_##name(					\
	const struct ieee80211_sub_if_data *sdata, char *buf,		\
	int buflen)							\
{									\
	return scnprintf(buf, buflen, format_string, sdata->field);	\
}
#define IEEE80211_IF_FMT_DEC(name, field)				\
		IEEE80211_IF_FMT(name, field, "%d\n")
#define IEEE80211_IF_FMT_HEX(name, field)				\
		IEEE80211_IF_FMT(name, field, "%#x\n")
#define IEEE80211_IF_FMT_SIZE(name, field)				\
		IEEE80211_IF_FMT(name, field, "%zd\n")

#define IEEE80211_IF_FMT_ATOMIC(name, field)				\
static ssize_t ieee80211_if_fmt_##name(					\
	const struct ieee80211_sub_if_data *sdata,			\
	char *buf, int buflen)						\
{									\
	return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
}

#define IEEE80211_IF_FMT_MAC(name, field)				\
static ssize_t ieee80211_if_fmt_##name(					\
	const struct ieee80211_sub_if_data *sdata, char *buf,		\
	int buflen)							\
{									\
	DECLARE_MAC_BUF(mac);						\
	return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
}

#define __IEEE80211_IF_FILE(name)					\
static ssize_t ieee80211_if_read_##name(struct file *file,		\
					char __user *userbuf,		\
					size_t count, loff_t *ppos)	\
{									\
	return ieee80211_if_read(file->private_data,			\
				 userbuf, count, ppos,			\
				 ieee80211_if_fmt_##name);		\
}									\
static const struct file_operations name##_ops = {			\
	.read = ieee80211_if_read_##name,				\
	.open = mac80211_open_file_generic,				\
}

#define IEEE80211_IF_FILE(name, field, format)				\
		IEEE80211_IF_FMT_##format(name, field)			\
		__IEEE80211_IF_FILE(name)

/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
IEEE80211_IF_FILE(eapol, eapol, DEC);
IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);

/* STA/IBSS attributes */
IEEE80211_IF_FILE(state, u.sta.state, DEC);
IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);

static ssize_t ieee80211_if_fmt_flags(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
		 sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
		 sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
		 sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
		 sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
		 sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
		 sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
		 sdata->flags & IEEE80211_SDATA_USE_PROTECTION ? "CTS prot\n" : "");
}
__IEEE80211_IF_FILE(flags);

/* AP attributes */
IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
IEEE80211_IF_FILE(dtim_period, u.ap.dtim_period, DEC);
IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);

static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	return scnprintf(buf, buflen, "%u\n",
			 skb_queue_len(&sdata->u.ap.ps_bc_buf));
}
__IEEE80211_IF_FILE(num_buffered_multicast);

static ssize_t ieee80211_if_fmt_beacon_head_len(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	if (sdata->u.ap.beacon_head)
		return scnprintf(buf, buflen, "%d\n",
				 sdata->u.ap.beacon_head_len);
	return scnprintf(buf, buflen, "\n");
}
__IEEE80211_IF_FILE(beacon_head_len);

static ssize_t ieee80211_if_fmt_beacon_tail_len(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	if (sdata->u.ap.beacon_tail)
		return scnprintf(buf, buflen, "%d\n",
				 sdata->u.ap.beacon_tail_len);
	return scnprintf(buf, buflen, "\n");
}
__IEEE80211_IF_FILE(beacon_tail_len);

/* WDS attributes */
IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);

/* VLAN attributes */
IEEE80211_IF_FILE(vlan_id, u.vlan.id, DEC);

#define DEBUGFS_ADD(name, type)\
	sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
		sdata->debugfsdir, sdata, &name##_ops);

static void add_sta_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(channel_use, sta);
	DEBUGFS_ADD(drop_unencrypted, sta);
	DEBUGFS_ADD(eapol, sta);
	DEBUGFS_ADD(ieee8021_x, sta);
	DEBUGFS_ADD(state, sta);
	DEBUGFS_ADD(bssid, sta);
	DEBUGFS_ADD(prev_bssid, sta);
	DEBUGFS_ADD(ssid_len, sta);
	DEBUGFS_ADD(aid, sta);
	DEBUGFS_ADD(ap_capab, sta);
	DEBUGFS_ADD(capab, sta);
	DEBUGFS_ADD(extra_ie_len, sta);
	DEBUGFS_ADD(auth_tries, sta);
	DEBUGFS_ADD(assoc_tries, sta);
	DEBUGFS_ADD(auth_algs, sta);
	DEBUGFS_ADD(auth_alg, sta);
	DEBUGFS_ADD(auth_transaction, sta);
	DEBUGFS_ADD(flags, sta);
}

static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(channel_use, ap);
	DEBUGFS_ADD(drop_unencrypted, ap);
	DEBUGFS_ADD(eapol, ap);
	DEBUGFS_ADD(ieee8021_x, ap);
	DEBUGFS_ADD(num_sta_ps, ap);
	DEBUGFS_ADD(dtim_period, ap);
	DEBUGFS_ADD(dtim_count, ap);
	DEBUGFS_ADD(num_beacons, ap);
	DEBUGFS_ADD(force_unicast_rateidx, ap);
	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	DEBUGFS_ADD(num_buffered_multicast, ap);
	DEBUGFS_ADD(beacon_head_len, ap);
	DEBUGFS_ADD(beacon_tail_len, ap);
}

static void add_wds_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(channel_use, wds);
	DEBUGFS_ADD(drop_unencrypted, wds);
	DEBUGFS_ADD(eapol, wds);
	DEBUGFS_ADD(ieee8021_x, wds);
	DEBUGFS_ADD(peer, wds);
}

static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(channel_use, vlan);
	DEBUGFS_ADD(drop_unencrypted, vlan);
	DEBUGFS_ADD(eapol, vlan);
	DEBUGFS_ADD(ieee8021_x, vlan);
	DEBUGFS_ADD(vlan_id, vlan);
}

static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

static void add_files(struct ieee80211_sub_if_data *sdata)
{
	if (!sdata->debugfsdir)
		return;

	switch (sdata->type) {
	case IEEE80211_IF_TYPE_STA:
	case IEEE80211_IF_TYPE_IBSS:
		add_sta_files(sdata);
		break;
	case IEEE80211_IF_TYPE_AP:
		add_ap_files(sdata);
		break;
	case IEEE80211_IF_TYPE_WDS:
		add_wds_files(sdata);
		break;
	case IEEE80211_IF_TYPE_MNTR:
		add_monitor_files(sdata);
		break;
	case IEEE80211_IF_TYPE_VLAN:
		add_vlan_files(sdata);
		break;
	default:
		break;
	}
}

#define DEBUGFS_DEL(name, type)					\
	do {							\
		debugfs_remove(sdata->debugfs.type.name);	\
		sdata->debugfs.type.name = NULL;		\
	} while (0)

static void del_sta_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(channel_use, sta);
	DEBUGFS_DEL(drop_unencrypted, sta);
	DEBUGFS_DEL(eapol, sta);
	DEBUGFS_DEL(ieee8021_x, sta);
	DEBUGFS_DEL(state, sta);
	DEBUGFS_DEL(bssid, sta);
	DEBUGFS_DEL(prev_bssid, sta);
	DEBUGFS_DEL(ssid_len, sta);
	DEBUGFS_DEL(aid, sta);
	DEBUGFS_DEL(ap_capab, sta);
	DEBUGFS_DEL(capab, sta);
	DEBUGFS_DEL(extra_ie_len, sta);
	DEBUGFS_DEL(auth_tries, sta);
	DEBUGFS_DEL(assoc_tries, sta);
	DEBUGFS_DEL(auth_algs, sta);
	DEBUGFS_DEL(auth_alg, sta);
	DEBUGFS_DEL(auth_transaction, sta);
	DEBUGFS_DEL(flags, sta);
}

static void del_ap_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(channel_use, ap);
	DEBUGFS_DEL(drop_unencrypted, ap);
	DEBUGFS_DEL(eapol, ap);
	DEBUGFS_DEL(ieee8021_x, ap);
	DEBUGFS_DEL(num_sta_ps, ap);
	DEBUGFS_DEL(dtim_period, ap);
	DEBUGFS_DEL(dtim_count, ap);
	DEBUGFS_DEL(num_beacons, ap);
	DEBUGFS_DEL(force_unicast_rateidx, ap);
	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	DEBUGFS_DEL(num_buffered_multicast, ap);
	DEBUGFS_DEL(beacon_head_len, ap);
	DEBUGFS_DEL(beacon_tail_len, ap);
}

static void del_wds_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(channel_use, wds);
	DEBUGFS_DEL(drop_unencrypted, wds);
	DEBUGFS_DEL(eapol, wds);
	DEBUGFS_DEL(ieee8021_x, wds);
	DEBUGFS_DEL(peer, wds);
}

static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(channel_use, vlan);
	DEBUGFS_DEL(drop_unencrypted, vlan);
	DEBUGFS_DEL(eapol, vlan);
	DEBUGFS_DEL(ieee8021_x, vlan);
	DEBUGFS_DEL(vlan_id, vlan);
}

static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

static void del_files(struct ieee80211_sub_if_data *sdata, int type)
{
	if (!sdata->debugfsdir)
		return;

	switch (type) {
	case IEEE80211_IF_TYPE_STA:
	case IEEE80211_IF_TYPE_IBSS:
		del_sta_files(sdata);
		break;
	case IEEE80211_IF_TYPE_AP:
		del_ap_files(sdata);
		break;
	case IEEE80211_IF_TYPE_WDS:
		del_wds_files(sdata);
		break;
	case IEEE80211_IF_TYPE_MNTR:
		del_monitor_files(sdata);
		break;
	case IEEE80211_IF_TYPE_VLAN:
		del_vlan_files(sdata);
		break;
	default:
		break;
	}
}

static int notif_registered;

void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
{
	char buf[10+IFNAMSIZ];

	if (!notif_registered)
		return;

	sprintf(buf, "netdev:%s", sdata->dev->name);
	sdata->debugfsdir = debugfs_create_dir(buf,
		sdata->local->hw.wiphy->debugfsdir);
}

void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
{
	del_files(sdata, sdata->type);
	debugfs_remove(sdata->debugfsdir);
	sdata->debugfsdir = NULL;
}

void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
				      int oldtype)
{
	del_files(sdata, oldtype);
	add_files(sdata);
}

static int netdev_notify(struct notifier_block * nb,
			 unsigned long state,
			 void *ndev)
{
	struct net_device *dev = ndev;
	struct dentry *dir;
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	char buf[10+IFNAMSIZ];

	if (state != NETDEV_CHANGENAME)
		return 0;

	if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
		return 0;

	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
		return 0;

	sprintf(buf, "netdev:%s", dev->name);
	dir = sdata->debugfsdir;
	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
		printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
		       "dir to %s\n", buf);

	return 0;
}

static struct notifier_block mac80211_debugfs_netdev_notifier = {
	.notifier_call = netdev_notify,
};

void ieee80211_debugfs_netdev_init(void)
{
	int err;

	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	if (err) {
		printk(KERN_ERR
		       "mac80211: failed to install netdev notifier,"
		       " disabling per-netdev debugfs!\n");
	} else
		notif_registered = 1;
}

void ieee80211_debugfs_netdev_exit(void)
{
	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	notif_registered = 0;
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	3	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/device.h>
	12	#include <linux/if.h>
	13	#include <linux/interrupt.h>
	14	#include <linux/netdevice.h>
	15	#include <linux/rtnetlink.h>
	16	#include <linux/notifier.h>
	17	#include <net/mac80211.h>
	18	#include <net/cfg80211.h>
	19	#include "ieee80211_i.h"
	20	#include "ieee80211_rate.h"
	21	#include "debugfs.h"
	22	#include "debugfs_netdev.h"
	23
	24	static ssize_t ieee80211_if_read(
	25	struct ieee80211_sub_if_data *sdata,
	26	char __user *userbuf,
	27	size_t count, loff_t *ppos,
	28	ssize_t (format)(const struct ieee80211_sub_if_data , char *, int))
	29	{
	30	char buf[70];
	31	ssize_t ret = -EINVAL;
	32
	33	read_lock(&dev_base_lock);
	34	if (sdata->dev->reg_state == NETREG_REGISTERED) {
	35	ret = (*format)(sdata, buf, sizeof(buf));
	36	ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	37	}
	38	read_unlock(&dev_base_lock);
	39	return ret;
	40	}
	41
	42	#define IEEE80211_IF_FMT(name, field, format_string) \
	43	static ssize_t ieee80211_if_fmt_##name( \
	44	const struct ieee80211_sub_if_data sdata, char buf, \
	45	int buflen) \
	46	{ \
	47	return scnprintf(buf, buflen, format_string, sdata->field); \
	48	}
	49	#define IEEE80211_IF_FMT_DEC(name, field) \
	50	IEEE80211_IF_FMT(name, field, "%d\n")
	51	#define IEEE80211_IF_FMT_HEX(name, field) \
	52	IEEE80211_IF_FMT(name, field, "%#x\n")
	53	#define IEEE80211_IF_FMT_SIZE(name, field) \
	54	IEEE80211_IF_FMT(name, field, "%zd\n")
	55
	56	#define IEEE80211_IF_FMT_ATOMIC(name, field) \
	57	static ssize_t ieee80211_if_fmt_##name( \
	58	const struct ieee80211_sub_if_data *sdata, \
	59	char *buf, int buflen) \
	60	{ \
	61	return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
	62	}
	63
	64	#define IEEE80211_IF_FMT_MAC(name, field) \
65	static ssize_t ieee80211_if_fmt_##name( \
66	const struct ieee80211_sub_if_data sdata, char buf, \
67	int buflen) \
68	{ \
0795af57 JP	69	DECLARE_MAC_BUF(mac); \
0795af57 JP	70	return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
e9f207f0 JB	71	}
	72
	73	#define __IEEE80211_IF_FILE(name) \
	74	static ssize_t ieee80211_if_read_##name(struct file *file, \
	75	char __user *userbuf, \
	76	size_t count, loff_t *ppos) \
	77	{ \
	78	return ieee80211_if_read(file->private_data, \
	79	userbuf, count, ppos, \
	80	ieee80211_if_fmt_##name); \
	81	} \
	82	static const struct file_operations name##_ops = { \
	83	.read = ieee80211_if_read_##name, \
	84	.open = mac80211_open_file_generic, \
	85	}
	86
	87	#define IEEE80211_IF_FILE(name, field, format) \
	88	IEEE80211_IF_FMT_##format(name, field) \
	89	__IEEE80211_IF_FILE(name)
	90
	91	/* common attributes */
	92	IEEE80211_IF_FILE(channel_use, channel_use, DEC);
	93	IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
	94	IEEE80211_IF_FILE(eapol, eapol, DEC);
	95	IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);
	96
	97	/* STA/IBSS attributes */
	98	IEEE80211_IF_FILE(state, u.sta.state, DEC);
	99	IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
	100	IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
	101	IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
	102	IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
	103	IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
	104	IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
	105	IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
	106	IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
	107	IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
	108	IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
	109	IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
	110	IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
	111
	112	static ssize_t ieee80211_if_fmt_flags(
	113	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	114	{
	115	return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
d6f2da5b JS	116	sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
	117	sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
	118	sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
	119	sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
	120	sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
	121	sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
13262ffd	122	sdata->flags & IEEE80211_SDATA_USE_PROTECTION ? "CTS prot\n" : "");
e9f207f0 JB	123	}
	124	__IEEE80211_IF_FILE(flags);
	125
	126	/* AP attributes */
	127	IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
	128	IEEE80211_IF_FILE(dtim_period, u.ap.dtim_period, DEC);
	129	IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
	130	IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
	131	IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
	132	IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
	133
	134	static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	135	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	136	{
	137	return scnprintf(buf, buflen, "%u\n",
	138	skb_queue_len(&sdata->u.ap.ps_bc_buf));
	139	}
	140	__IEEE80211_IF_FILE(num_buffered_multicast);
	141
	142	static ssize_t ieee80211_if_fmt_beacon_head_len(
	143	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	144	{
	145	if (sdata->u.ap.beacon_head)
	146	return scnprintf(buf, buflen, "%d\n",
	147	sdata->u.ap.beacon_head_len);
	148	return scnprintf(buf, buflen, "\n");
	149	}
	150	__IEEE80211_IF_FILE(beacon_head_len);
	151
	152	static ssize_t ieee80211_if_fmt_beacon_tail_len(
	153	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	154	{
	155	if (sdata->u.ap.beacon_tail)
	156	return scnprintf(buf, buflen, "%d\n",
	157	sdata->u.ap.beacon_tail_len);
	158	return scnprintf(buf, buflen, "\n");
	159	}
	160	__IEEE80211_IF_FILE(beacon_tail_len);
	161
	162	/* WDS attributes */
	163	IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
	164
	165	/* VLAN attributes */
	166	IEEE80211_IF_FILE(vlan_id, u.vlan.id, DEC);
	167
e9f207f0 JB	168	#define DEBUGFS_ADD(name, type)\
	169	sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
	170	sdata->debugfsdir, sdata, &name##_ops);
	171
	172	static void add_sta_files(struct ieee80211_sub_if_data *sdata)
	173	{
	174	DEBUGFS_ADD(channel_use, sta);
	175	DEBUGFS_ADD(drop_unencrypted, sta);
	176	DEBUGFS_ADD(eapol, sta);
	177	DEBUGFS_ADD(ieee8021_x, sta);
	178	DEBUGFS_ADD(state, sta);
	179	DEBUGFS_ADD(bssid, sta);
	180	DEBUGFS_ADD(prev_bssid, sta);
	181	DEBUGFS_ADD(ssid_len, sta);
	182	DEBUGFS_ADD(aid, sta);
	183	DEBUGFS_ADD(ap_capab, sta);
	184	DEBUGFS_ADD(capab, sta);
	185	DEBUGFS_ADD(extra_ie_len, sta);
	186	DEBUGFS_ADD(auth_tries, sta);
	187	DEBUGFS_ADD(assoc_tries, sta);
	188	DEBUGFS_ADD(auth_algs, sta);
	189	DEBUGFS_ADD(auth_alg, sta);
	190	DEBUGFS_ADD(auth_transaction, sta);
	191	DEBUGFS_ADD(flags, sta);
	192	}
	193
	194	static void add_ap_files(struct ieee80211_sub_if_data *sdata)
	195	{
	196	DEBUGFS_ADD(channel_use, ap);
	197	DEBUGFS_ADD(drop_unencrypted, ap);
	198	DEBUGFS_ADD(eapol, ap);
	199	DEBUGFS_ADD(ieee8021_x, ap);
	200	DEBUGFS_ADD(num_sta_ps, ap);
	201	DEBUGFS_ADD(dtim_period, ap);
	202	DEBUGFS_ADD(dtim_count, ap);
	203	DEBUGFS_ADD(num_beacons, ap);
	204	DEBUGFS_ADD(force_unicast_rateidx, ap);
	205	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	206	DEBUGFS_ADD(num_buffered_multicast, ap);
	207	DEBUGFS_ADD(beacon_head_len, ap);
	208	DEBUGFS_ADD(beacon_tail_len, ap);
	209	}
	210
	211	static void add_wds_files(struct ieee80211_sub_if_data *sdata)
	212	{
	213	DEBUGFS_ADD(channel_use, wds);
	214	DEBUGFS_ADD(drop_unencrypted, wds);
	215	DEBUGFS_ADD(eapol, wds);
	216	DEBUGFS_ADD(ieee8021_x, wds);
	217	DEBUGFS_ADD(peer, wds);
	218	}
	219
	220	static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
	221	{
	222	DEBUGFS_ADD(channel_use, vlan);
	223	DEBUGFS_ADD(drop_unencrypted, vlan);
	224	DEBUGFS_ADD(eapol, vlan);
	225	DEBUGFS_ADD(ieee8021_x, vlan);
	226	DEBUGFS_ADD(vlan_id, vlan);
	227	}
	228
	229	static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
	230	{
e9f207f0 JB	231	}
	232
	233	static void add_files(struct ieee80211_sub_if_data *sdata)
	234	{
	235	if (!sdata->debugfsdir)
	236	return;
	237
	238	switch (sdata->type) {
	239	case IEEE80211_IF_TYPE_STA:
	240	case IEEE80211_IF_TYPE_IBSS:
	241	add_sta_files(sdata);
	242	break;
	243	case IEEE80211_IF_TYPE_AP:
	244	add_ap_files(sdata);
	245	break;
	246	case IEEE80211_IF_TYPE_WDS:
	247	add_wds_files(sdata);
	248	break;
	249	case IEEE80211_IF_TYPE_MNTR:
	250	add_monitor_files(sdata);
	251	break;
	252	case IEEE80211_IF_TYPE_VLAN:
	253	add_vlan_files(sdata);
	254	break;
	255	default:
	256	break;
	257	}
	258	}
	259
21887b2f ZY	260	#define DEBUGFS_DEL(name, type) \
	261	do { \
	262	debugfs_remove(sdata->debugfs.type.name); \
	263	sdata->debugfs.type.name = NULL; \
	264	} while (0)
e9f207f0 JB	265
	266	static void del_sta_files(struct ieee80211_sub_if_data *sdata)
	267	{
	268	DEBUGFS_DEL(channel_use, sta);
	269	DEBUGFS_DEL(drop_unencrypted, sta);
	270	DEBUGFS_DEL(eapol, sta);
	271	DEBUGFS_DEL(ieee8021_x, sta);
	272	DEBUGFS_DEL(state, sta);
	273	DEBUGFS_DEL(bssid, sta);
	274	DEBUGFS_DEL(prev_bssid, sta);
	275	DEBUGFS_DEL(ssid_len, sta);
	276	DEBUGFS_DEL(aid, sta);
	277	DEBUGFS_DEL(ap_capab, sta);
	278	DEBUGFS_DEL(capab, sta);
	279	DEBUGFS_DEL(extra_ie_len, sta);
	280	DEBUGFS_DEL(auth_tries, sta);
	281	DEBUGFS_DEL(assoc_tries, sta);
	282	DEBUGFS_DEL(auth_algs, sta);
	283	DEBUGFS_DEL(auth_alg, sta);
	284	DEBUGFS_DEL(auth_transaction, sta);
	285	DEBUGFS_DEL(flags, sta);
	286	}
	287
	288	static void del_ap_files(struct ieee80211_sub_if_data *sdata)
	289	{
	290	DEBUGFS_DEL(channel_use, ap);
	291	DEBUGFS_DEL(drop_unencrypted, ap);
	292	DEBUGFS_DEL(eapol, ap);
	293	DEBUGFS_DEL(ieee8021_x, ap);
	294	DEBUGFS_DEL(num_sta_ps, ap);
	295	DEBUGFS_DEL(dtim_period, ap);
	296	DEBUGFS_DEL(dtim_count, ap);
	297	DEBUGFS_DEL(num_beacons, ap);
	298	DEBUGFS_DEL(force_unicast_rateidx, ap);
	299	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	300	DEBUGFS_DEL(num_buffered_multicast, ap);
	301	DEBUGFS_DEL(beacon_head_len, ap);
	302	DEBUGFS_DEL(beacon_tail_len, ap);
	303	}
	304
	305	static void del_wds_files(struct ieee80211_sub_if_data *sdata)
	306	{
	307	DEBUGFS_DEL(channel_use, wds);
	308	DEBUGFS_DEL(drop_unencrypted, wds);
	309	DEBUGFS_DEL(eapol, wds);
	310	DEBUGFS_DEL(ieee8021_x, wds);
	311	DEBUGFS_DEL(peer, wds);
	312	}
	313
	314	static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
	315	{
	316	DEBUGFS_DEL(channel_use, vlan);
	317	DEBUGFS_DEL(drop_unencrypted, vlan);
	318	DEBUGFS_DEL(eapol, vlan);
	319	DEBUGFS_DEL(ieee8021_x, vlan);
	320	DEBUGFS_DEL(vlan_id, vlan);
	321	}
	322
	323	static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
	324	{
e9f207f0 JB	325	}
	326
	327	static void del_files(struct ieee80211_sub_if_data *sdata, int type)
	328	{
	329	if (!sdata->debugfsdir)
	330	return;
	331
	332	switch (type) {
	333	case IEEE80211_IF_TYPE_STA:
	334	case IEEE80211_IF_TYPE_IBSS:
	335	del_sta_files(sdata);
	336	break;
	337	case IEEE80211_IF_TYPE_AP:
	338	del_ap_files(sdata);
	339	break;
	340	case IEEE80211_IF_TYPE_WDS:
	341	del_wds_files(sdata);
	342	break;
	343	case IEEE80211_IF_TYPE_MNTR:
	344	del_monitor_files(sdata);
	345	break;
	346	case IEEE80211_IF_TYPE_VLAN:
	347	del_vlan_files(sdata);
	348	break;
	349	default:
	350	break;
	351	}
	352	}
	353
	354	static int notif_registered;
	355
	356	void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
	357	{
	358	char buf[10+IFNAMSIZ];
	359
	360	if (!notif_registered)
	361	return;
	362
	363	sprintf(buf, "netdev:%s", sdata->dev->name);
	364	sdata->debugfsdir = debugfs_create_dir(buf,
	365	sdata->local->hw.wiphy->debugfsdir);
	366	}
	367
	368	void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
	369	{
	370	del_files(sdata, sdata->type);
	371	debugfs_remove(sdata->debugfsdir);
	372	sdata->debugfsdir = NULL;
	373	}
	374
	375	void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
	376	int oldtype)
	377	{
	378	del_files(sdata, oldtype);
	379	add_files(sdata);
	380	}
	381
	382	static int netdev_notify(struct notifier_block * nb,
	383	unsigned long state,
	384	void *ndev)
	385	{
	386	struct net_device *dev = ndev;
7c8081eb JB	387	struct dentry *dir;
7c8081eb JB	388	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
e9f207f0 JB	389	char buf[10+IFNAMSIZ];
	390
	391	if (state != NETDEV_CHANGENAME)
	392	return 0;
	393
	394	if (!dev->ieee80211_ptr \|\| !dev->ieee80211_ptr->wiphy)
	395	return 0;
	396
	397	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
	398	return 0;
	399
e9f207f0	400	sprintf(buf, "netdev:%s", dev->name);
7c8081eb JB	401	dir = sdata->debugfsdir;
	402	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
	403	printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
	404	"dir to %s\n", buf);
e9f207f0 JB	405
	406	return 0;
	407	}
	408
	409	static struct notifier_block mac80211_debugfs_netdev_notifier = {
	410	.notifier_call = netdev_notify,
	411	};
	412
	413	void ieee80211_debugfs_netdev_init(void)
	414	{
	415	int err;
	416
	417	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	418	if (err) {
	419	printk(KERN_ERR
	420	"mac80211: failed to install netdev notifier,"
	421	" disabling per-netdev debugfs!\n");
	422	} else
	423	notif_registered = 1;
	424	}
	425
	426	void ieee80211_debugfs_netdev_exit(void)
	427	{
	428	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	429	notif_registered = 0;
	430	}