[linux-block.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(drop_unencrypted, drop_unencrypted, DEC);
IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, 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);

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(drop_unencrypted, sta);
	DEBUGFS_ADD(force_unicast_rateidx, ap);
	DEBUGFS_ADD(max_ratectrl_rateidx, ap);

	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(drop_unencrypted, ap);
	DEBUGFS_ADD(force_unicast_rateidx, ap);
	DEBUGFS_ADD(max_ratectrl_rateidx, ap);

	DEBUGFS_ADD(num_sta_ps, ap);
	DEBUGFS_ADD(dtim_count, ap);
	DEBUGFS_ADD(num_beacons, ap);
	DEBUGFS_ADD(num_buffered_multicast, ap);
}

static void add_wds_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(drop_unencrypted, wds);
	DEBUGFS_ADD(force_unicast_rateidx, ap);
	DEBUGFS_ADD(max_ratectrl_rateidx, ap);

	DEBUGFS_ADD(peer, wds);
}

static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_ADD(drop_unencrypted, vlan);
	DEBUGFS_ADD(force_unicast_rateidx, ap);
	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
}

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(drop_unencrypted, sta);
	DEBUGFS_DEL(force_unicast_rateidx, ap);
	DEBUGFS_DEL(max_ratectrl_rateidx, ap);

	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(drop_unencrypted, ap);
	DEBUGFS_DEL(force_unicast_rateidx, ap);
	DEBUGFS_DEL(max_ratectrl_rateidx, ap);

	DEBUGFS_DEL(num_sta_ps, ap);
	DEBUGFS_DEL(dtim_count, ap);
	DEBUGFS_DEL(num_beacons, ap);
	DEBUGFS_DEL(num_buffered_multicast, ap);
}

static void del_wds_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(drop_unencrypted, wds);
	DEBUGFS_DEL(force_unicast_rateidx, ap);
	DEBUGFS_DEL(max_ratectrl_rateidx, ap);

	DEBUGFS_DEL(peer, wds);
}

static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
{
	DEBUGFS_DEL(drop_unencrypted, vlan);
	DEBUGFS_DEL(force_unicast_rateidx, ap);
	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
}

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;
	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;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	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	157	/* common attributes */
e9f207f0	158	IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
3e122be0 JB	159	IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
3e122be0 JB	160	IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
e9f207f0 JB	161
	162	/* STA/IBSS attributes */
	163	IEEE80211_IF_FILE(state, u.sta.state, DEC);
	164	IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
	165	IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
	166	IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
	167	IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
	168	IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
	169	IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
	170	IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
	171	IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
	172	IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
	173	IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
	174	IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
	175	IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
9f42f607	176	IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
e9f207f0 JB	177
	178	static ssize_t ieee80211_if_fmt_flags(
	179	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	180	{
	181	return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
d6f2da5b JS	182	sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
	183	sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
	184	sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
	185	sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
	186	sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
	187	sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
471b3efd	188	sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
e9f207f0 JB	189	}
	190	__IEEE80211_IF_FILE(flags);
	191
	192	/* AP attributes */
	193	IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
e9f207f0 JB	194	IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
e9f207f0 JB	195	IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
e9f207f0 JB	196
	197	static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	198	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	199	{
	200	return scnprintf(buf, buflen, "%u\n",
	201	skb_queue_len(&sdata->u.ap.ps_bc_buf));
	202	}
	203	__IEEE80211_IF_FILE(num_buffered_multicast);
	204
e9f207f0 JB	205	/* WDS attributes */
	206	IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
	207
9f42f607 LCC	208	#ifdef CONFIG_MAC80211_MESH
	209	/* Mesh stats attributes */
	210	IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
	211	IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
	212	IEEE80211_IF_FILE(dropped_frames_no_route,
	213	u.sta.mshstats.dropped_frames_no_route, DEC);
	214	IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
	215
	216	/* Mesh parameters */
	217	IEEE80211_IF_WFILE(dot11MeshMaxRetries,
	218	u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
	219	IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
	220	u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
	221	IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
	222	u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
	223	IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
	224	u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
	225	IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
0675abdb	226	IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
9f42f607 LCC	227	IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
	228	u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
	229	IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
	230	u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
	231	IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
	232	u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
	233	IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
	234	u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
	235	IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
	236	u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
	237	IEEE80211_IF_WFILE(path_refresh_time,
	238	u.sta.mshcfg.path_refresh_time, DEC, u32);
	239	IEEE80211_IF_WFILE(min_discovery_timeout,
	240	u.sta.mshcfg.min_discovery_timeout, DEC, u16);
	241	#endif
	242
	243
e9f207f0	244	#define DEBUGFS_ADD(name, type)\
bebb8a5e	245	sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
e9f207f0 JB	246	sdata->debugfsdir, sdata, &name##_ops);
	247
	248	static void add_sta_files(struct ieee80211_sub_if_data *sdata)
	249	{
e9f207f0	250	DEBUGFS_ADD(drop_unencrypted, sta);
3e122be0 JB	251	DEBUGFS_ADD(force_unicast_rateidx, ap);
	252	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	253
e9f207f0 JB	254	DEBUGFS_ADD(state, sta);
	255	DEBUGFS_ADD(bssid, sta);
	256	DEBUGFS_ADD(prev_bssid, sta);
	257	DEBUGFS_ADD(ssid_len, sta);
	258	DEBUGFS_ADD(aid, sta);
	259	DEBUGFS_ADD(ap_capab, sta);
	260	DEBUGFS_ADD(capab, sta);
	261	DEBUGFS_ADD(extra_ie_len, sta);
	262	DEBUGFS_ADD(auth_tries, sta);
	263	DEBUGFS_ADD(assoc_tries, sta);
	264	DEBUGFS_ADD(auth_algs, sta);
	265	DEBUGFS_ADD(auth_alg, sta);
	266	DEBUGFS_ADD(auth_transaction, sta);
	267	DEBUGFS_ADD(flags, sta);
9f42f607	268	DEBUGFS_ADD(num_beacons_sta, sta);
e9f207f0 JB	269	}
	270
	271	static void add_ap_files(struct ieee80211_sub_if_data *sdata)
	272	{
e9f207f0	273	DEBUGFS_ADD(drop_unencrypted, ap);
3e122be0 JB	274	DEBUGFS_ADD(force_unicast_rateidx, ap);
	275	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	276
e9f207f0	277	DEBUGFS_ADD(num_sta_ps, ap);
e9f207f0 JB	278	DEBUGFS_ADD(dtim_count, ap);
e9f207f0 JB	279	DEBUGFS_ADD(num_beacons, ap);
e9f207f0	280	DEBUGFS_ADD(num_buffered_multicast, ap);
e9f207f0 JB	281	}
	282
	283	static void add_wds_files(struct ieee80211_sub_if_data *sdata)
	284	{
e9f207f0	285	DEBUGFS_ADD(drop_unencrypted, wds);
3e122be0 JB	286	DEBUGFS_ADD(force_unicast_rateidx, ap);
	287	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	288
e9f207f0 JB	289	DEBUGFS_ADD(peer, wds);
	290	}
	291
	292	static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
	293	{
e9f207f0	294	DEBUGFS_ADD(drop_unencrypted, vlan);
3e122be0 JB	295	DEBUGFS_ADD(force_unicast_rateidx, ap);
3e122be0 JB	296	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
e9f207f0 JB	297	}
	298
	299	static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
	300	{
e9f207f0 JB	301	}
e9f207f0 JB	302
9f42f607 LCC	303	#ifdef CONFIG_MAC80211_MESH
9f42f607 LCC	304	#define MESHSTATS_ADD(name)\
bebb8a5e	305	sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
9f42f607 LCC	306	sdata->mesh_stats_dir, sdata, &name##_ops);
	307
	308	static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
	309	{
	310	sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
	311	sdata->debugfsdir);
	312	MESHSTATS_ADD(fwded_frames);
	313	MESHSTATS_ADD(dropped_frames_ttl);
	314	MESHSTATS_ADD(dropped_frames_no_route);
	315	MESHSTATS_ADD(estab_plinks);
	316	}
	317
	318	#define MESHPARAMS_ADD(name)\
bebb8a5e	319	sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
9f42f607 LCC	320	sdata->mesh_config_dir, sdata, &name##_ops);
	321
	322	static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
	323	{
	324	sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
	325	sdata->debugfsdir);
	326	MESHPARAMS_ADD(dot11MeshMaxRetries);
	327	MESHPARAMS_ADD(dot11MeshRetryTimeout);
	328	MESHPARAMS_ADD(dot11MeshConfirmTimeout);
	329	MESHPARAMS_ADD(dot11MeshHoldingTimeout);
	330	MESHPARAMS_ADD(dot11MeshTTL);
	331	MESHPARAMS_ADD(auto_open_plinks);
	332	MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
	333	MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
	334	MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
	335	MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
	336	MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
	337	MESHPARAMS_ADD(path_refresh_time);
	338	MESHPARAMS_ADD(min_discovery_timeout);
	339	}
	340	#endif
	341
e9f207f0 JB	342	static void add_files(struct ieee80211_sub_if_data *sdata)
	343	{
	344	if (!sdata->debugfsdir)
	345	return;
	346
51fb61e7	347	switch (sdata->vif.type) {
9f42f607 LCC	348	case IEEE80211_IF_TYPE_MESH_POINT:
	349	#ifdef CONFIG_MAC80211_MESH
	350	add_mesh_stats(sdata);
	351	add_mesh_config(sdata);
	352	#endif
	353	/* fall through */
e9f207f0 JB	354	case IEEE80211_IF_TYPE_STA:
	355	case IEEE80211_IF_TYPE_IBSS:
	356	add_sta_files(sdata);
	357	break;
	358	case IEEE80211_IF_TYPE_AP:
	359	add_ap_files(sdata);
	360	break;
	361	case IEEE80211_IF_TYPE_WDS:
	362	add_wds_files(sdata);
	363	break;
	364	case IEEE80211_IF_TYPE_MNTR:
	365	add_monitor_files(sdata);
	366	break;
	367	case IEEE80211_IF_TYPE_VLAN:
	368	add_vlan_files(sdata);
	369	break;
	370	default:
	371	break;
	372	}
	373	}
	374
21887b2f ZY	375	#define DEBUGFS_DEL(name, type) \
	376	do { \
	377	debugfs_remove(sdata->debugfs.type.name); \
	378	sdata->debugfs.type.name = NULL; \
	379	} while (0)
e9f207f0 JB	380
	381	static void del_sta_files(struct ieee80211_sub_if_data *sdata)
	382	{
e9f207f0	383	DEBUGFS_DEL(drop_unencrypted, sta);
3e122be0 JB	384	DEBUGFS_DEL(force_unicast_rateidx, ap);
	385	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	386
e9f207f0 JB	387	DEBUGFS_DEL(state, sta);
	388	DEBUGFS_DEL(bssid, sta);
	389	DEBUGFS_DEL(prev_bssid, sta);
	390	DEBUGFS_DEL(ssid_len, sta);
	391	DEBUGFS_DEL(aid, sta);
	392	DEBUGFS_DEL(ap_capab, sta);
	393	DEBUGFS_DEL(capab, sta);
	394	DEBUGFS_DEL(extra_ie_len, sta);
	395	DEBUGFS_DEL(auth_tries, sta);
	396	DEBUGFS_DEL(assoc_tries, sta);
	397	DEBUGFS_DEL(auth_algs, sta);
	398	DEBUGFS_DEL(auth_alg, sta);
	399	DEBUGFS_DEL(auth_transaction, sta);
	400	DEBUGFS_DEL(flags, sta);
9f42f607	401	DEBUGFS_DEL(num_beacons_sta, sta);
e9f207f0 JB	402	}
	403
	404	static void del_ap_files(struct ieee80211_sub_if_data *sdata)
	405	{
e9f207f0	406	DEBUGFS_DEL(drop_unencrypted, ap);
3e122be0 JB	407	DEBUGFS_DEL(force_unicast_rateidx, ap);
	408	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	409
e9f207f0	410	DEBUGFS_DEL(num_sta_ps, ap);
e9f207f0 JB	411	DEBUGFS_DEL(dtim_count, ap);
e9f207f0 JB	412	DEBUGFS_DEL(num_beacons, ap);
e9f207f0	413	DEBUGFS_DEL(num_buffered_multicast, ap);
e9f207f0 JB	414	}
	415
	416	static void del_wds_files(struct ieee80211_sub_if_data *sdata)
	417	{
e9f207f0	418	DEBUGFS_DEL(drop_unencrypted, wds);
3e122be0 JB	419	DEBUGFS_DEL(force_unicast_rateidx, ap);
	420	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	421
e9f207f0 JB	422	DEBUGFS_DEL(peer, wds);
	423	}
	424
	425	static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
	426	{
e9f207f0	427	DEBUGFS_DEL(drop_unencrypted, vlan);
3e122be0 JB	428	DEBUGFS_DEL(force_unicast_rateidx, ap);
3e122be0 JB	429	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
e9f207f0 JB	430	}
	431
	432	static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
	433	{
e9f207f0 JB	434	}
e9f207f0 JB	435
9f42f607 LCC	436	#ifdef CONFIG_MAC80211_MESH
	437	#define MESHSTATS_DEL(name) \
	438	do { \
	439	debugfs_remove(sdata->mesh_stats.name); \
	440	sdata->mesh_stats.name = NULL; \
	441	} while (0)
	442
	443	static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
	444	{
	445	MESHSTATS_DEL(fwded_frames);
	446	MESHSTATS_DEL(dropped_frames_ttl);
	447	MESHSTATS_DEL(dropped_frames_no_route);
	448	MESHSTATS_DEL(estab_plinks);
	449	debugfs_remove(sdata->mesh_stats_dir);
	450	sdata->mesh_stats_dir = NULL;
	451	}
	452
	453	#define MESHPARAMS_DEL(name) \
	454	do { \
	455	debugfs_remove(sdata->mesh_config.name); \
	456	sdata->mesh_config.name = NULL; \
	457	} while (0)
	458
	459	static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
	460	{
	461	MESHPARAMS_DEL(dot11MeshMaxRetries);
	462	MESHPARAMS_DEL(dot11MeshRetryTimeout);
	463	MESHPARAMS_DEL(dot11MeshConfirmTimeout);
	464	MESHPARAMS_DEL(dot11MeshHoldingTimeout);
	465	MESHPARAMS_DEL(dot11MeshTTL);
	466	MESHPARAMS_DEL(auto_open_plinks);
	467	MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
	468	MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
	469	MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
	470	MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
	471	MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
	472	MESHPARAMS_DEL(path_refresh_time);
	473	MESHPARAMS_DEL(min_discovery_timeout);
	474	debugfs_remove(sdata->mesh_config_dir);
	475	sdata->mesh_config_dir = NULL;
	476	}
	477	#endif
	478
e9f207f0 JB	479	static void del_files(struct ieee80211_sub_if_data *sdata, int type)
	480	{
	481	if (!sdata->debugfsdir)
	482	return;
	483
	484	switch (type) {
9f42f607 LCC	485	case IEEE80211_IF_TYPE_MESH_POINT:
	486	#ifdef CONFIG_MAC80211_MESH
	487	del_mesh_stats(sdata);
	488	del_mesh_config(sdata);
	489	#endif
	490	/* fall through */
e9f207f0 JB	491	case IEEE80211_IF_TYPE_STA:
	492	case IEEE80211_IF_TYPE_IBSS:
	493	del_sta_files(sdata);
	494	break;
	495	case IEEE80211_IF_TYPE_AP:
	496	del_ap_files(sdata);
	497	break;
	498	case IEEE80211_IF_TYPE_WDS:
	499	del_wds_files(sdata);
	500	break;
	501	case IEEE80211_IF_TYPE_MNTR:
	502	del_monitor_files(sdata);
	503	break;
	504	case IEEE80211_IF_TYPE_VLAN:
	505	del_vlan_files(sdata);
	506	break;
	507	default:
	508	break;
	509	}
	510	}
	511
	512	static int notif_registered;
	513
	514	void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
	515	{
	516	char buf[10+IFNAMSIZ];
	517
	518	if (!notif_registered)
	519	return;
	520
	521	sprintf(buf, "netdev:%s", sdata->dev->name);
	522	sdata->debugfsdir = debugfs_create_dir(buf,
	523	sdata->local->hw.wiphy->debugfsdir);
	524	}
	525
	526	void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
	527	{
51fb61e7	528	del_files(sdata, sdata->vif.type);
e9f207f0 JB	529	debugfs_remove(sdata->debugfsdir);
	530	sdata->debugfsdir = NULL;
	531	}
	532
	533	void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
	534	int oldtype)
	535	{
	536	del_files(sdata, oldtype);
	537	add_files(sdata);
	538	}
	539
988c0f72	540	static int netdev_notify(struct notifier_block *nb,
e9f207f0 JB	541	unsigned long state,
	542	void *ndev)
	543	{
	544	struct net_device *dev = ndev;
7c8081eb	545	struct dentry *dir;
3e122be0	546	struct ieee80211_sub_if_data *sdata;
e9f207f0 JB	547	char buf[10+IFNAMSIZ];
	548
	549	if (state != NETDEV_CHANGENAME)
	550	return 0;
	551
	552	if (!dev->ieee80211_ptr \|\| !dev->ieee80211_ptr->wiphy)
	553	return 0;
	554
	555	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
	556	return 0;
	557
3e122be0 JB	558	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3e122be0 JB	559
e9f207f0	560	sprintf(buf, "netdev:%s", dev->name);
7c8081eb JB	561	dir = sdata->debugfsdir;
	562	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
	563	printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
	564	"dir to %s\n", buf);
e9f207f0 JB	565
	566	return 0;
	567	}
	568
	569	static struct notifier_block mac80211_debugfs_netdev_notifier = {
	570	.notifier_call = netdev_notify,
	571	};
	572
	573	void ieee80211_debugfs_netdev_init(void)
	574	{
	575	int err;
	576
	577	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	578	if (err) {
	579	printk(KERN_ERR
	580	"mac80211: failed to install netdev notifier,"
	581	" disabling per-netdev debugfs!\n");
	582	} else
	583	notif_registered = 1;
	584	}
	585
	586	void ieee80211_debugfs_netdev_exit(void)
	587	{
	588	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	589	notif_registered = 0;
	590	}