[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 "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));
	read_unlock(&dev_base_lock);

	if (ret != -EINVAL)
		ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);

	return ret;
}

#ifdef CONFIG_MAC80211_MESH
static ssize_t ieee80211_if_write(
	struct ieee80211_sub_if_data *sdata,
	char const __user *userbuf,
	size_t count, loff_t *ppos,
	int (*format)(struct ieee80211_sub_if_data *, char *))
{
	char buf[10];
	int buf_size;

	memset(buf, 0x00, sizeof(buf));
	buf_size = min(count, (sizeof(buf)-1));
	if (copy_from_user(buf, userbuf, buf_size))
		return count;
	read_lock(&dev_base_lock);
	if (sdata->dev->reg_state == NETREG_REGISTERED)
		(*format)(sdata, buf);
	read_unlock(&dev_base_lock);

	return count;
}
#endif

#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_WFMT(name, field, type)				\
static int ieee80211_if_wfmt_##name(					\
	struct ieee80211_sub_if_data *sdata, char *buf)			\
{									\
	unsigned long tmp;						\
	char *endp;							\
									\
	tmp = simple_strtoul(buf, &endp, 0);				\
	if ((endp == buf) || ((type)tmp != tmp))			\
		return -EINVAL;						\
	sdata->field = tmp;						\
	return 0;							\
}
#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)

#define __IEEE80211_IF_WFILE(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 ssize_t ieee80211_if_write_##name(struct file *file,		\
					const char __user *userbuf,	\
					size_t count, loff_t *ppos)	\
{									\
	return ieee80211_if_write(file->private_data,			\
				 userbuf, count, ppos,			\
				 ieee80211_if_wfmt_##name);		\
}									\
static const struct file_operations name##_ops = {			\
	.read = ieee80211_if_read_##name,				\
	.write = ieee80211_if_write_##name,				\
	.open = mac80211_open_file_generic,				\
}

#define IEEE80211_IF_WFILE(name, field, format, type)			\
		IEEE80211_IF_FMT_##format(name, field)			\
		IEEE80211_IF_WFMT(name, field, type)			\
		__IEEE80211_IF_WFILE(name)

/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, 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);
IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, 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->bss_conf.use_cts_prot ? "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_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);

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

#ifdef CONFIG_MAC80211_MESH
/* Mesh stats attributes */
IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
IEEE80211_IF_FILE(dropped_frames_no_route,
		u.sta.mshstats.dropped_frames_no_route, DEC);
IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);

/* Mesh parameters */
IEEE80211_IF_WFILE(dot11MeshMaxRetries,
		u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
		u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
		u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
		u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
		u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
		u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
		u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
		u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
		u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
IEEE80211_IF_WFILE(path_refresh_time,
		u.sta.mshcfg.path_refresh_time, DEC, u32);
IEEE80211_IF_WFILE(min_discovery_timeout,
		u.sta.mshcfg.min_discovery_timeout, DEC, u16);
#endif


#define DEBUGFS_ADD(name, type)\
	sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
		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(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);
	DEBUGFS_ADD(num_beacons_sta, sta);
}

static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(channel_use, ap);
	DEBUGFS_ADD(drop_unencrypted, ap);
	DEBUGFS_ADD(num_sta_ps, 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);
}

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

static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

#ifdef CONFIG_MAC80211_MESH
#define MESHSTATS_ADD(name)\
	sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
		sdata->mesh_stats_dir, sdata, &name##_ops);

static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
{
	sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
				sdata->debugfsdir);
	MESHSTATS_ADD(fwded_frames);
	MESHSTATS_ADD(dropped_frames_ttl);
	MESHSTATS_ADD(dropped_frames_no_route);
	MESHSTATS_ADD(estab_plinks);
}

#define MESHPARAMS_ADD(name)\
	sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
		sdata->mesh_config_dir, sdata, &name##_ops);

static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
{
	sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
				sdata->debugfsdir);
	MESHPARAMS_ADD(dot11MeshMaxRetries);
	MESHPARAMS_ADD(dot11MeshRetryTimeout);
	MESHPARAMS_ADD(dot11MeshConfirmTimeout);
	MESHPARAMS_ADD(dot11MeshHoldingTimeout);
	MESHPARAMS_ADD(dot11MeshTTL);
	MESHPARAMS_ADD(auto_open_plinks);
	MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
	MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
	MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
	MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
	MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
	MESHPARAMS_ADD(path_refresh_time);
	MESHPARAMS_ADD(min_discovery_timeout);
}
#endif

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

	switch (sdata->vif.type) {
	case IEEE80211_IF_TYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		add_mesh_stats(sdata);
		add_mesh_config(sdata);
#endif
		/* fall through */
	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(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);
	DEBUGFS_DEL(num_beacons_sta, sta);
}

static void del_ap_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(channel_use, ap);
	DEBUGFS_DEL(drop_unencrypted, ap);
	DEBUGFS_DEL(num_sta_ps, 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);
}

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

static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}

#ifdef CONFIG_MAC80211_MESH
#define MESHSTATS_DEL(name)			\
	do {						\
		debugfs_remove(sdata->mesh_stats.name);	\
		sdata->mesh_stats.name = NULL;		\
	} while (0)

static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
{
	MESHSTATS_DEL(fwded_frames);
	MESHSTATS_DEL(dropped_frames_ttl);
	MESHSTATS_DEL(dropped_frames_no_route);
	MESHSTATS_DEL(estab_plinks);
	debugfs_remove(sdata->mesh_stats_dir);
	sdata->mesh_stats_dir = NULL;
}

#define MESHPARAMS_DEL(name)			\
	do {						\
		debugfs_remove(sdata->mesh_config.name);	\
		sdata->mesh_config.name = NULL;		\
	} while (0)

static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
{
	MESHPARAMS_DEL(dot11MeshMaxRetries);
	MESHPARAMS_DEL(dot11MeshRetryTimeout);
	MESHPARAMS_DEL(dot11MeshConfirmTimeout);
	MESHPARAMS_DEL(dot11MeshHoldingTimeout);
	MESHPARAMS_DEL(dot11MeshTTL);
	MESHPARAMS_DEL(auto_open_plinks);
	MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
	MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
	MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
	MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
	MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
	MESHPARAMS_DEL(path_refresh_time);
	MESHPARAMS_DEL(min_discovery_timeout);
	debugfs_remove(sdata->mesh_config_dir);
	sdata->mesh_config_dir = NULL;
}
#endif

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

	switch (type) {
	case IEEE80211_IF_TYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		del_mesh_stats(sdata);
		del_mesh_config(sdata);
#endif
		/* fall through */
	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->vif.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"
2c8dccc7	20	#include "rate.h"
e9f207f0 JB	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);
73bb3e4a	34	if (sdata->dev->reg_state == NETREG_REGISTERED)
e9f207f0	35	ret = (*format)(sdata, buf, sizeof(buf));
e9f207f0	36	read_unlock(&dev_base_lock);
73bb3e4a LCC	37
	38	if (ret != -EINVAL)
	39	ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	40
e9f207f0 JB	41	return ret;
	42	}
	43
9f42f607 LCC	44	#ifdef CONFIG_MAC80211_MESH
	45	static ssize_t ieee80211_if_write(
	46	struct ieee80211_sub_if_data *sdata,
	47	char const __user *userbuf,
	48	size_t count, loff_t *ppos,
	49	int (format)(struct ieee80211_sub_if_data , char *))
	50	{
	51	char buf[10];
	52	int buf_size;
	53
	54	memset(buf, 0x00, sizeof(buf));
	55	buf_size = min(count, (sizeof(buf)-1));
9f42f607	56	if (copy_from_user(buf, userbuf, buf_size))
73bb3e4a LCC	57	return count;
73bb3e4a LCC	58	read_lock(&dev_base_lock);
9f42f607 LCC	59	if (sdata->dev->reg_state == NETREG_REGISTERED)
9f42f607 LCC	60	(*format)(sdata, buf);
9f42f607	61	read_unlock(&dev_base_lock);
73bb3e4a	62
9f42f607 LCC	63	return count;
	64	}
	65	#endif
	66
e9f207f0 JB	67	#define IEEE80211_IF_FMT(name, field, format_string) \
	68	static ssize_t ieee80211_if_fmt_##name( \
	69	const struct ieee80211_sub_if_data sdata, char buf, \
	70	int buflen) \
	71	{ \
	72	return scnprintf(buf, buflen, format_string, sdata->field); \
	73	}
9f42f607 LCC	74	#define IEEE80211_IF_WFMT(name, field, type) \
	75	static int ieee80211_if_wfmt_##name( \
	76	struct ieee80211_sub_if_data sdata, char buf) \
	77	{ \
	78	unsigned long tmp; \
	79	char *endp; \
	80	\
	81	tmp = simple_strtoul(buf, &endp, 0); \
	82	if ((endp == buf) \|\| ((type)tmp != tmp)) \
	83	return -EINVAL; \
	84	sdata->field = tmp; \
	85	return 0; \
	86	}
e9f207f0 JB	87	#define IEEE80211_IF_FMT_DEC(name, field) \
	88	IEEE80211_IF_FMT(name, field, "%d\n")
	89	#define IEEE80211_IF_FMT_HEX(name, field) \
	90	IEEE80211_IF_FMT(name, field, "%#x\n")
	91	#define IEEE80211_IF_FMT_SIZE(name, field) \
	92	IEEE80211_IF_FMT(name, field, "%zd\n")
	93
	94	#define IEEE80211_IF_FMT_ATOMIC(name, field) \
	95	static ssize_t ieee80211_if_fmt_##name( \
	96	const struct ieee80211_sub_if_data *sdata, \
	97	char *buf, int buflen) \
	98	{ \
	99	return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
	100	}
	101
	102	#define IEEE80211_IF_FMT_MAC(name, field) \
	103	static ssize_t ieee80211_if_fmt_##name( \
	104	const struct ieee80211_sub_if_data sdata, char buf, \
	105	int buflen) \
	106	{ \
0795af57 JP	107	DECLARE_MAC_BUF(mac); \
0795af57 JP	108	return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
e9f207f0 JB	109	}
	110
	111	#define __IEEE80211_IF_FILE(name) \
	112	static ssize_t ieee80211_if_read_##name(struct file *file, \
	113	char __user *userbuf, \
	114	size_t count, loff_t *ppos) \
	115	{ \
	116	return ieee80211_if_read(file->private_data, \
	117	userbuf, count, ppos, \
	118	ieee80211_if_fmt_##name); \
	119	} \
	120	static const struct file_operations name##_ops = { \
	121	.read = ieee80211_if_read_##name, \
	122	.open = mac80211_open_file_generic, \
	123	}
	124
	125	#define IEEE80211_IF_FILE(name, field, format) \
	126	IEEE80211_IF_FMT_##format(name, field) \
	127	__IEEE80211_IF_FILE(name)
	128
9f42f607 LCC	129	#define __IEEE80211_IF_WFILE(name) \
	130	static ssize_t ieee80211_if_read_##name(struct file *file, \
	131	char __user *userbuf, \
	132	size_t count, loff_t *ppos) \
	133	{ \
	134	return ieee80211_if_read(file->private_data, \
	135	userbuf, count, ppos, \
	136	ieee80211_if_fmt_##name); \
	137	} \
	138	static ssize_t ieee80211_if_write_##name(struct file *file, \
	139	const char __user *userbuf, \
	140	size_t count, loff_t *ppos) \
	141	{ \
	142	return ieee80211_if_write(file->private_data, \
	143	userbuf, count, ppos, \
	144	ieee80211_if_wfmt_##name); \
	145	} \
	146	static const struct file_operations name##_ops = { \
	147	.read = ieee80211_if_read_##name, \
	148	.write = ieee80211_if_write_##name, \
	149	.open = mac80211_open_file_generic, \
	150	}
	151
	152	#define IEEE80211_IF_WFILE(name, field, format, type) \
	153	IEEE80211_IF_FMT_##format(name, field) \
	154	IEEE80211_IF_WFMT(name, field, type) \
	155	__IEEE80211_IF_WFILE(name)
	156
e9f207f0 JB	157	/* common attributes */
	158	IEEE80211_IF_FILE(channel_use, channel_use, DEC);
	159	IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
e9f207f0 JB	160
	161	/* STA/IBSS attributes */
	162	IEEE80211_IF_FILE(state, u.sta.state, DEC);
	163	IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
	164	IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
	165	IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
	166	IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
	167	IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
	168	IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
	169	IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
	170	IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
	171	IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
	172	IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
	173	IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
	174	IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
9f42f607	175	IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
e9f207f0 JB	176
	177	static ssize_t ieee80211_if_fmt_flags(
	178	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	179	{
	180	return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
d6f2da5b JS	181	sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
	182	sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
	183	sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
	184	sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
	185	sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
	186	sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
471b3efd	187	sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
e9f207f0 JB	188	}
	189	__IEEE80211_IF_FILE(flags);
	190
	191	/* AP attributes */
	192	IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
e9f207f0 JB	193	IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
	194	IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
	195	IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
	196	IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
	197
	198	static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	199	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	200	{
	201	return scnprintf(buf, buflen, "%u\n",
	202	skb_queue_len(&sdata->u.ap.ps_bc_buf));
	203	}
	204	__IEEE80211_IF_FILE(num_buffered_multicast);
	205
e9f207f0 JB	206	/* WDS attributes */
	207	IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
	208
9f42f607 LCC	209	#ifdef CONFIG_MAC80211_MESH
	210	/* Mesh stats attributes */
	211	IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
	212	IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
	213	IEEE80211_IF_FILE(dropped_frames_no_route,
	214	u.sta.mshstats.dropped_frames_no_route, DEC);
	215	IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
	216
	217	/* Mesh parameters */
	218	IEEE80211_IF_WFILE(dot11MeshMaxRetries,
	219	u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
	220	IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
	221	u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
	222	IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
	223	u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
	224	IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
	225	u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
	226	IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
0675abdb	227	IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
9f42f607 LCC	228	IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
	229	u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
	230	IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
	231	u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
	232	IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
	233	u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
	234	IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
	235	u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
	236	IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
	237	u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
	238	IEEE80211_IF_WFILE(path_refresh_time,
	239	u.sta.mshcfg.path_refresh_time, DEC, u32);
	240	IEEE80211_IF_WFILE(min_discovery_timeout,
	241	u.sta.mshcfg.min_discovery_timeout, DEC, u16);
	242	#endif
	243
	244
e9f207f0	245	#define DEBUGFS_ADD(name, type)\
bebb8a5e	246	sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
e9f207f0 JB	247	sdata->debugfsdir, sdata, &name##_ops);
	248
	249	static void add_sta_files(struct ieee80211_sub_if_data *sdata)
	250	{
	251	DEBUGFS_ADD(channel_use, sta);
	252	DEBUGFS_ADD(drop_unencrypted, sta);
e9f207f0 JB	253	DEBUGFS_ADD(state, sta);
	254	DEBUGFS_ADD(bssid, sta);
	255	DEBUGFS_ADD(prev_bssid, sta);
	256	DEBUGFS_ADD(ssid_len, sta);
	257	DEBUGFS_ADD(aid, sta);
	258	DEBUGFS_ADD(ap_capab, sta);
	259	DEBUGFS_ADD(capab, sta);
	260	DEBUGFS_ADD(extra_ie_len, sta);
	261	DEBUGFS_ADD(auth_tries, sta);
	262	DEBUGFS_ADD(assoc_tries, sta);
	263	DEBUGFS_ADD(auth_algs, sta);
	264	DEBUGFS_ADD(auth_alg, sta);
	265	DEBUGFS_ADD(auth_transaction, sta);
	266	DEBUGFS_ADD(flags, sta);
9f42f607	267	DEBUGFS_ADD(num_beacons_sta, sta);
e9f207f0 JB	268	}
	269
	270	static void add_ap_files(struct ieee80211_sub_if_data *sdata)
	271	{
	272	DEBUGFS_ADD(channel_use, ap);
	273	DEBUGFS_ADD(drop_unencrypted, ap);
e9f207f0	274	DEBUGFS_ADD(num_sta_ps, ap);
e9f207f0 JB	275	DEBUGFS_ADD(dtim_count, ap);
	276	DEBUGFS_ADD(num_beacons, ap);
	277	DEBUGFS_ADD(force_unicast_rateidx, ap);
	278	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	279	DEBUGFS_ADD(num_buffered_multicast, ap);
e9f207f0 JB	280	}
	281
	282	static void add_wds_files(struct ieee80211_sub_if_data *sdata)
	283	{
	284	DEBUGFS_ADD(channel_use, wds);
	285	DEBUGFS_ADD(drop_unencrypted, wds);
e9f207f0 JB	286	DEBUGFS_ADD(peer, wds);
	287	}
	288
	289	static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
	290	{
	291	DEBUGFS_ADD(channel_use, vlan);
	292	DEBUGFS_ADD(drop_unencrypted, vlan);
e9f207f0 JB	293	}
	294
	295	static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
	296	{
e9f207f0 JB	297	}
e9f207f0 JB	298
9f42f607 LCC	299	#ifdef CONFIG_MAC80211_MESH
9f42f607 LCC	300	#define MESHSTATS_ADD(name)\
bebb8a5e	301	sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
9f42f607 LCC	302	sdata->mesh_stats_dir, sdata, &name##_ops);
	303
	304	static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
	305	{
	306	sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
	307	sdata->debugfsdir);
	308	MESHSTATS_ADD(fwded_frames);
	309	MESHSTATS_ADD(dropped_frames_ttl);
	310	MESHSTATS_ADD(dropped_frames_no_route);
	311	MESHSTATS_ADD(estab_plinks);
	312	}
	313
	314	#define MESHPARAMS_ADD(name)\
bebb8a5e	315	sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
9f42f607 LCC	316	sdata->mesh_config_dir, sdata, &name##_ops);
	317
	318	static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
	319	{
	320	sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
	321	sdata->debugfsdir);
	322	MESHPARAMS_ADD(dot11MeshMaxRetries);
	323	MESHPARAMS_ADD(dot11MeshRetryTimeout);
	324	MESHPARAMS_ADD(dot11MeshConfirmTimeout);
	325	MESHPARAMS_ADD(dot11MeshHoldingTimeout);
	326	MESHPARAMS_ADD(dot11MeshTTL);
	327	MESHPARAMS_ADD(auto_open_plinks);
	328	MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
	329	MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
	330	MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
	331	MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
	332	MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
	333	MESHPARAMS_ADD(path_refresh_time);
	334	MESHPARAMS_ADD(min_discovery_timeout);
	335	}
	336	#endif
	337
e9f207f0 JB	338	static void add_files(struct ieee80211_sub_if_data *sdata)
	339	{
	340	if (!sdata->debugfsdir)
	341	return;
	342
51fb61e7	343	switch (sdata->vif.type) {
9f42f607 LCC	344	case IEEE80211_IF_TYPE_MESH_POINT:
	345	#ifdef CONFIG_MAC80211_MESH
	346	add_mesh_stats(sdata);
	347	add_mesh_config(sdata);
	348	#endif
	349	/* fall through */
e9f207f0 JB	350	case IEEE80211_IF_TYPE_STA:
	351	case IEEE80211_IF_TYPE_IBSS:
	352	add_sta_files(sdata);
	353	break;
	354	case IEEE80211_IF_TYPE_AP:
	355	add_ap_files(sdata);
	356	break;
	357	case IEEE80211_IF_TYPE_WDS:
	358	add_wds_files(sdata);
	359	break;
	360	case IEEE80211_IF_TYPE_MNTR:
	361	add_monitor_files(sdata);
	362	break;
	363	case IEEE80211_IF_TYPE_VLAN:
	364	add_vlan_files(sdata);
	365	break;
	366	default:
	367	break;
	368	}
	369	}
	370
21887b2f ZY	371	#define DEBUGFS_DEL(name, type) \
	372	do { \
	373	debugfs_remove(sdata->debugfs.type.name); \
	374	sdata->debugfs.type.name = NULL; \
	375	} while (0)
e9f207f0 JB	376
	377	static void del_sta_files(struct ieee80211_sub_if_data *sdata)
	378	{
	379	DEBUGFS_DEL(channel_use, sta);
	380	DEBUGFS_DEL(drop_unencrypted, sta);
e9f207f0 JB	381	DEBUGFS_DEL(state, sta);
	382	DEBUGFS_DEL(bssid, sta);
	383	DEBUGFS_DEL(prev_bssid, sta);
	384	DEBUGFS_DEL(ssid_len, sta);
	385	DEBUGFS_DEL(aid, sta);
	386	DEBUGFS_DEL(ap_capab, sta);
	387	DEBUGFS_DEL(capab, sta);
	388	DEBUGFS_DEL(extra_ie_len, sta);
	389	DEBUGFS_DEL(auth_tries, sta);
	390	DEBUGFS_DEL(assoc_tries, sta);
	391	DEBUGFS_DEL(auth_algs, sta);
	392	DEBUGFS_DEL(auth_alg, sta);
	393	DEBUGFS_DEL(auth_transaction, sta);
	394	DEBUGFS_DEL(flags, sta);
9f42f607	395	DEBUGFS_DEL(num_beacons_sta, sta);
e9f207f0 JB	396	}
	397
	398	static void del_ap_files(struct ieee80211_sub_if_data *sdata)
	399	{
	400	DEBUGFS_DEL(channel_use, ap);
	401	DEBUGFS_DEL(drop_unencrypted, ap);
e9f207f0	402	DEBUGFS_DEL(num_sta_ps, ap);
e9f207f0 JB	403	DEBUGFS_DEL(dtim_count, ap);
	404	DEBUGFS_DEL(num_beacons, ap);
	405	DEBUGFS_DEL(force_unicast_rateidx, ap);
	406	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	407	DEBUGFS_DEL(num_buffered_multicast, ap);
e9f207f0 JB	408	}
	409
	410	static void del_wds_files(struct ieee80211_sub_if_data *sdata)
	411	{
	412	DEBUGFS_DEL(channel_use, wds);
	413	DEBUGFS_DEL(drop_unencrypted, wds);
e9f207f0 JB	414	DEBUGFS_DEL(peer, wds);
	415	}
	416
	417	static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
	418	{
	419	DEBUGFS_DEL(channel_use, vlan);
	420	DEBUGFS_DEL(drop_unencrypted, vlan);
e9f207f0 JB	421	}
	422
	423	static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
	424	{
e9f207f0 JB	425	}
e9f207f0 JB	426
9f42f607 LCC	427	#ifdef CONFIG_MAC80211_MESH
	428	#define MESHSTATS_DEL(name) \
	429	do { \
	430	debugfs_remove(sdata->mesh_stats.name); \
	431	sdata->mesh_stats.name = NULL; \
	432	} while (0)
	433
	434	static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
	435	{
	436	MESHSTATS_DEL(fwded_frames);
	437	MESHSTATS_DEL(dropped_frames_ttl);
	438	MESHSTATS_DEL(dropped_frames_no_route);
	439	MESHSTATS_DEL(estab_plinks);
	440	debugfs_remove(sdata->mesh_stats_dir);
	441	sdata->mesh_stats_dir = NULL;
	442	}
	443
	444	#define MESHPARAMS_DEL(name) \
	445	do { \
	446	debugfs_remove(sdata->mesh_config.name); \
	447	sdata->mesh_config.name = NULL; \
	448	} while (0)
	449
	450	static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
	451	{
	452	MESHPARAMS_DEL(dot11MeshMaxRetries);
	453	MESHPARAMS_DEL(dot11MeshRetryTimeout);
	454	MESHPARAMS_DEL(dot11MeshConfirmTimeout);
	455	MESHPARAMS_DEL(dot11MeshHoldingTimeout);
	456	MESHPARAMS_DEL(dot11MeshTTL);
	457	MESHPARAMS_DEL(auto_open_plinks);
	458	MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
	459	MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
	460	MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
	461	MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
	462	MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
	463	MESHPARAMS_DEL(path_refresh_time);
	464	MESHPARAMS_DEL(min_discovery_timeout);
	465	debugfs_remove(sdata->mesh_config_dir);
	466	sdata->mesh_config_dir = NULL;
	467	}
	468	#endif
	469
e9f207f0 JB	470	static void del_files(struct ieee80211_sub_if_data *sdata, int type)
	471	{
	472	if (!sdata->debugfsdir)
	473	return;
	474
	475	switch (type) {
9f42f607 LCC	476	case IEEE80211_IF_TYPE_MESH_POINT:
	477	#ifdef CONFIG_MAC80211_MESH
	478	del_mesh_stats(sdata);
	479	del_mesh_config(sdata);
	480	#endif
	481	/* fall through */
e9f207f0 JB	482	case IEEE80211_IF_TYPE_STA:
	483	case IEEE80211_IF_TYPE_IBSS:
	484	del_sta_files(sdata);
	485	break;
	486	case IEEE80211_IF_TYPE_AP:
	487	del_ap_files(sdata);
	488	break;
	489	case IEEE80211_IF_TYPE_WDS:
	490	del_wds_files(sdata);
	491	break;
	492	case IEEE80211_IF_TYPE_MNTR:
	493	del_monitor_files(sdata);
	494	break;
	495	case IEEE80211_IF_TYPE_VLAN:
	496	del_vlan_files(sdata);
	497	break;
	498	default:
	499	break;
	500	}
	501	}
	502
	503	static int notif_registered;
	504
	505	void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
	506	{
	507	char buf[10+IFNAMSIZ];
	508
	509	if (!notif_registered)
	510	return;
	511
	512	sprintf(buf, "netdev:%s", sdata->dev->name);
	513	sdata->debugfsdir = debugfs_create_dir(buf,
	514	sdata->local->hw.wiphy->debugfsdir);
	515	}
	516
	517	void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
	518	{
51fb61e7	519	del_files(sdata, sdata->vif.type);
e9f207f0 JB	520	debugfs_remove(sdata->debugfsdir);
	521	sdata->debugfsdir = NULL;
	522	}
	523
	524	void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
	525	int oldtype)
	526	{
	527	del_files(sdata, oldtype);
	528	add_files(sdata);
	529	}
	530
	531	static int netdev_notify(struct notifier_block * nb,
	532	unsigned long state,
	533	void *ndev)
	534	{
	535	struct net_device *dev = ndev;
7c8081eb JB	536	struct dentry *dir;
7c8081eb JB	537	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
e9f207f0 JB	538	char buf[10+IFNAMSIZ];
	539
	540	if (state != NETDEV_CHANGENAME)
	541	return 0;
	542
	543	if (!dev->ieee80211_ptr \|\| !dev->ieee80211_ptr->wiphy)
	544	return 0;
	545
	546	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
	547	return 0;
	548
e9f207f0	549	sprintf(buf, "netdev:%s", dev->name);
7c8081eb JB	550	dir = sdata->debugfsdir;
	551	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
	552	printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
	553	"dir to %s\n", buf);
e9f207f0 JB	554
	555	return 0;
	556	}
	557
	558	static struct notifier_block mac80211_debugfs_netdev_notifier = {
	559	.notifier_call = netdev_notify,
	560	};
	561
	562	void ieee80211_debugfs_netdev_init(void)
	563	{
	564	int err;
	565
	566	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	567	if (err) {
	568	printk(KERN_ERR
	569	"mac80211: failed to install netdev notifier,"
	570	" disabling per-netdev debugfs!\n");
	571	} else
	572	notif_registered = 1;
	573	}
	574
	575	void ieee80211_debugfs_netdev_exit(void)
	576	{
	577	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	578	notif_registered = 0;
	579	}