[deliverable/linux.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);

/* MONITOR attributes */
static ssize_t ieee80211_if_fmt_mode(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	struct ieee80211_local *local = sdata->local;

	return scnprintf(buf, buflen, "%s\n",
			 ((local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) ||
			  local->open_count == local->monitors) ?
			 "hard" : "soft");
}
__IEEE80211_IF_FILE(mode);


#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)
{
	DEBUGFS_ADD(mode, monitor);
}

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)
{
	DEBUGFS_DEL(mode, monitor);
}

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
	168	/* MONITOR attributes */
	169	static ssize_t ieee80211_if_fmt_mode(
	170	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	171	{
	172	struct ieee80211_local *local = sdata->local;
	173
	174	return scnprintf(buf, buflen, "%s\n",
	175	((local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) \|\|
	176	local->open_count == local->monitors) ?
	177	"hard" : "soft");
	178	}
	179	__IEEE80211_IF_FILE(mode);
	180
	181
	182	#define DEBUGFS_ADD(name, type)\
	183	sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
	184	sdata->debugfsdir, sdata, &name##_ops);
	185
	186	static void add_sta_files(struct ieee80211_sub_if_data *sdata)
187	{
188	DEBUGFS_ADD(channel_use, sta);
189	DEBUGFS_ADD(drop_unencrypted, sta);
190	DEBUGFS_ADD(eapol, sta);
191	DEBUGFS_ADD(ieee8021_x, sta);
192	DEBUGFS_ADD(state, sta);
193	DEBUGFS_ADD(bssid, sta);
194	DEBUGFS_ADD(prev_bssid, sta);
195	DEBUGFS_ADD(ssid_len, sta);
196	DEBUGFS_ADD(aid, sta);
197	DEBUGFS_ADD(ap_capab, sta);
198	DEBUGFS_ADD(capab, sta);
199	DEBUGFS_ADD(extra_ie_len, sta);
200	DEBUGFS_ADD(auth_tries, sta);
201	DEBUGFS_ADD(assoc_tries, sta);
202	DEBUGFS_ADD(auth_algs, sta);
203	DEBUGFS_ADD(auth_alg, sta);
204	DEBUGFS_ADD(auth_transaction, sta);
205	DEBUGFS_ADD(flags, sta);
206	}
207
208	static void add_ap_files(struct ieee80211_sub_if_data *sdata)
209	{
210	DEBUGFS_ADD(channel_use, ap);
211	DEBUGFS_ADD(drop_unencrypted, ap);
212	DEBUGFS_ADD(eapol, ap);
213	DEBUGFS_ADD(ieee8021_x, ap);
214	DEBUGFS_ADD(num_sta_ps, ap);
215	DEBUGFS_ADD(dtim_period, ap);
216	DEBUGFS_ADD(dtim_count, ap);
217	DEBUGFS_ADD(num_beacons, ap);
218	DEBUGFS_ADD(force_unicast_rateidx, ap);
219	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
220	DEBUGFS_ADD(num_buffered_multicast, ap);
221	DEBUGFS_ADD(beacon_head_len, ap);
222	DEBUGFS_ADD(beacon_tail_len, ap);
223	}
224
225	static void add_wds_files(struct ieee80211_sub_if_data *sdata)
226	{
227	DEBUGFS_ADD(channel_use, wds);
228	DEBUGFS_ADD(drop_unencrypted, wds);
229	DEBUGFS_ADD(eapol, wds);
230	DEBUGFS_ADD(ieee8021_x, wds);
231	DEBUGFS_ADD(peer, wds);
232	}
233
234	static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
235	{
236	DEBUGFS_ADD(channel_use, vlan);
237	DEBUGFS_ADD(drop_unencrypted, vlan);
238	DEBUGFS_ADD(eapol, vlan);
239	DEBUGFS_ADD(ieee8021_x, vlan);
240	DEBUGFS_ADD(vlan_id, vlan);
241	}
242
243	static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
244	{
245	DEBUGFS_ADD(mode, monitor);
246	}
247
248	static void add_files(struct ieee80211_sub_if_data *sdata)
249	{
250	if (!sdata->debugfsdir)
251	return;
252
253	switch (sdata->type) {
254	case IEEE80211_IF_TYPE_STA:
255	case IEEE80211_IF_TYPE_IBSS:
256	add_sta_files(sdata);
257	break;
258	case IEEE80211_IF_TYPE_AP:
259	add_ap_files(sdata);
260	break;
261	case IEEE80211_IF_TYPE_WDS:
262	add_wds_files(sdata);
263	break;
264	case IEEE80211_IF_TYPE_MNTR:
265	add_monitor_files(sdata);
266	break;
267	case IEEE80211_IF_TYPE_VLAN:
268	add_vlan_files(sdata);
269	break;
270	default:
271	break;
272	}
273	}
274
21887b2f ZY	275	#define DEBUGFS_DEL(name, type) \
	276	do { \
	277	debugfs_remove(sdata->debugfs.type.name); \
	278	sdata->debugfs.type.name = NULL; \
	279	} while (0)
e9f207f0 JB	280
	281	static void del_sta_files(struct ieee80211_sub_if_data *sdata)
	282	{
	283	DEBUGFS_DEL(channel_use, sta);
	284	DEBUGFS_DEL(drop_unencrypted, sta);
	285	DEBUGFS_DEL(eapol, sta);
	286	DEBUGFS_DEL(ieee8021_x, sta);
	287	DEBUGFS_DEL(state, sta);
	288	DEBUGFS_DEL(bssid, sta);
	289	DEBUGFS_DEL(prev_bssid, sta);
	290	DEBUGFS_DEL(ssid_len, sta);
	291	DEBUGFS_DEL(aid, sta);
	292	DEBUGFS_DEL(ap_capab, sta);
	293	DEBUGFS_DEL(capab, sta);
	294	DEBUGFS_DEL(extra_ie_len, sta);
	295	DEBUGFS_DEL(auth_tries, sta);
	296	DEBUGFS_DEL(assoc_tries, sta);
	297	DEBUGFS_DEL(auth_algs, sta);
	298	DEBUGFS_DEL(auth_alg, sta);
	299	DEBUGFS_DEL(auth_transaction, sta);
	300	DEBUGFS_DEL(flags, sta);
	301	}
	302
	303	static void del_ap_files(struct ieee80211_sub_if_data *sdata)
	304	{
	305	DEBUGFS_DEL(channel_use, ap);
	306	DEBUGFS_DEL(drop_unencrypted, ap);
	307	DEBUGFS_DEL(eapol, ap);
	308	DEBUGFS_DEL(ieee8021_x, ap);
	309	DEBUGFS_DEL(num_sta_ps, ap);
	310	DEBUGFS_DEL(dtim_period, ap);
	311	DEBUGFS_DEL(dtim_count, ap);
	312	DEBUGFS_DEL(num_beacons, ap);
	313	DEBUGFS_DEL(force_unicast_rateidx, ap);
	314	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	315	DEBUGFS_DEL(num_buffered_multicast, ap);
	316	DEBUGFS_DEL(beacon_head_len, ap);
	317	DEBUGFS_DEL(beacon_tail_len, ap);
	318	}
	319
	320	static void del_wds_files(struct ieee80211_sub_if_data *sdata)
	321	{
	322	DEBUGFS_DEL(channel_use, wds);
	323	DEBUGFS_DEL(drop_unencrypted, wds);
	324	DEBUGFS_DEL(eapol, wds);
	325	DEBUGFS_DEL(ieee8021_x, wds);
	326	DEBUGFS_DEL(peer, wds);
	327	}
	328
	329	static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
	330	{
	331	DEBUGFS_DEL(channel_use, vlan);
	332	DEBUGFS_DEL(drop_unencrypted, vlan);
	333	DEBUGFS_DEL(eapol, vlan);
	334	DEBUGFS_DEL(ieee8021_x, vlan);
	335	DEBUGFS_DEL(vlan_id, vlan);
	336	}
	337
	338	static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
	339	{
	340	DEBUGFS_DEL(mode, monitor);
	341	}
	342
	343	static void del_files(struct ieee80211_sub_if_data *sdata, int type)
344	{
345	if (!sdata->debugfsdir)
346	return;
347
348	switch (type) {
349	case IEEE80211_IF_TYPE_STA:
350	case IEEE80211_IF_TYPE_IBSS:
351	del_sta_files(sdata);
352	break;
353	case IEEE80211_IF_TYPE_AP:
354	del_ap_files(sdata);
355	break;
356	case IEEE80211_IF_TYPE_WDS:
357	del_wds_files(sdata);
358	break;
359	case IEEE80211_IF_TYPE_MNTR:
360	del_monitor_files(sdata);
361	break;
362	case IEEE80211_IF_TYPE_VLAN:
363	del_vlan_files(sdata);
364	break;
365	default:
366	break;
367	}
368	}
369
370	static int notif_registered;
371
372	void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
373	{
374	char buf[10+IFNAMSIZ];
375
376	if (!notif_registered)
377	return;
378
379	sprintf(buf, "netdev:%s", sdata->dev->name);
380	sdata->debugfsdir = debugfs_create_dir(buf,
381	sdata->local->hw.wiphy->debugfsdir);
382	}
383
384	void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
385	{
386	del_files(sdata, sdata->type);
387	debugfs_remove(sdata->debugfsdir);
388	sdata->debugfsdir = NULL;
389	}
390
391	void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
392	int oldtype)
393	{
394	del_files(sdata, oldtype);
395	add_files(sdata);
396	}
397
398	static int netdev_notify(struct notifier_block * nb,
399	unsigned long state,
400	void *ndev)
401	{
402	struct net_device *dev = ndev;
7c8081eb JB	403	struct dentry *dir;
7c8081eb JB	404	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
e9f207f0 JB	405	char buf[10+IFNAMSIZ];
	406
	407	if (state != NETDEV_CHANGENAME)
	408	return 0;
	409
	410	if (!dev->ieee80211_ptr \|\| !dev->ieee80211_ptr->wiphy)
	411	return 0;
	412
	413	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
	414	return 0;
	415
e9f207f0	416	sprintf(buf, "netdev:%s", dev->name);
7c8081eb JB	417	dir = sdata->debugfsdir;
	418	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
	419	printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
	420	"dir to %s\n", buf);
e9f207f0 JB	421
	422	return 0;
	423	}
	424
	425	static struct notifier_block mac80211_debugfs_netdev_notifier = {
	426	.notifier_call = netdev_notify,
	427	};
	428
	429	void ieee80211_debugfs_netdev_init(void)
	430	{
	431	int err;
	432
	433	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	434	if (err) {
	435	printk(KERN_ERR
	436	"mac80211: failed to install netdev notifier,"
	437	" disabling per-netdev debugfs!\n");
	438	} else
	439	notif_registered = 1;
	440	}
	441
	442	void ieee80211_debugfs_netdev_exit(void)
	443	{
	444	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	445	notif_registered = 0;
	446	}