[linux-2.6-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;
}

#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)							\
{									\
	return scnprintf(buf, buflen, "%pM\n", 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(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 attributes */
IEEE80211_IF_FILE(state, u.mgd.state, DEC);
IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
IEEE80211_IF_FILE(prev_bssid, u.mgd.prev_bssid, MAC);
IEEE80211_IF_FILE(ssid_len, u.mgd.ssid_len, SIZE);
IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
IEEE80211_IF_FILE(ap_capab, u.mgd.ap_capab, HEX);
IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
IEEE80211_IF_FILE(extra_ie_len, u.mgd.extra_ie_len, SIZE);
IEEE80211_IF_FILE(auth_tries, u.mgd.auth_tries, DEC);
IEEE80211_IF_FILE(assoc_tries, u.mgd.assoc_tries, DEC);
IEEE80211_IF_FILE(auth_algs, u.mgd.auth_algs, HEX);
IEEE80211_IF_FILE(auth_alg, u.mgd.auth_alg, DEC);
IEEE80211_IF_FILE(auth_transaction, u.mgd.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.mgd.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
		 sdata->u.mgd.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
		 sdata->u.mgd.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
		 sdata->u.mgd.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
		 sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
		 sdata->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
		 sdata->vif.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);

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.mesh.mshstats.fwded_frames, DEC);
IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
IEEE80211_IF_FILE(dropped_frames_no_route,
		u.mesh.mshstats.dropped_frames_no_route, DEC);
IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);

/* Mesh parameters */
IEEE80211_IF_FILE(dot11MeshMaxRetries,
		u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
IEEE80211_IF_FILE(dot11MeshRetryTimeout,
		u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
		u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
		u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
		u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
		u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
		u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
		u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
		u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
IEEE80211_IF_FILE(path_refresh_time,
		u.mesh.mshcfg.path_refresh_time, DEC);
IEEE80211_IF_FILE(min_discovery_timeout,
		u.mesh.mshcfg.min_discovery_timeout, DEC);
#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, sta);
	DEBUGFS_ADD(max_ratectrl_rateidx, 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(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_buffered_multicast, ap);
}

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

	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, vlan);
	DEBUGFS_ADD(max_ratectrl_rateidx, 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 NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		add_mesh_stats(sdata);
		add_mesh_config(sdata);
#endif
		break;
	case NL80211_IFTYPE_STATION:
		add_sta_files(sdata);
		break;
	case NL80211_IFTYPE_ADHOC:
		/* XXX */
		break;
	case NL80211_IFTYPE_AP:
		add_ap_files(sdata);
		break;
	case NL80211_IFTYPE_WDS:
		add_wds_files(sdata);
		break;
	case NL80211_IFTYPE_MONITOR:
		add_monitor_files(sdata);
		break;
	case NL80211_IFTYPE_AP_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, sta);
	DEBUGFS_DEL(max_ratectrl_rateidx, 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(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_buffered_multicast, ap);
}

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

	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, vlan);
	DEBUGFS_DEL(max_ratectrl_rateidx, 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)
{
	if (!sdata->debugfsdir)
		return;

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		del_mesh_stats(sdata);
		del_mesh_config(sdata);
#endif
		break;
	case NL80211_IFTYPE_STATION:
		del_sta_files(sdata);
		break;
	case NL80211_IFTYPE_ADHOC:
		/* XXX */
		break;
	case NL80211_IFTYPE_AP:
		del_ap_files(sdata);
		break;
	case NL80211_IFTYPE_WDS:
		del_wds_files(sdata);
		break;
	case NL80211_IFTYPE_MONITOR:
		del_monitor_files(sdata);
		break;
	case NL80211_IFTYPE_AP_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);
	add_files(sdata);
}

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

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);

	dir = sdata->debugfsdir;

	if (!dir)
		return 0;

	sprintf(buf, "netdev:%s", dev->name);
	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
	44	#define IEEE80211_IF_FMT(name, field, format_string) \
	45	static ssize_t ieee80211_if_fmt_##name( \
	46	const struct ieee80211_sub_if_data sdata, char buf, \
	47	int buflen) \
	48	{ \
	49	return scnprintf(buf, buflen, format_string, sdata->field); \
	50	}
	51	#define IEEE80211_IF_FMT_DEC(name, field) \
	52	IEEE80211_IF_FMT(name, field, "%d\n")
	53	#define IEEE80211_IF_FMT_HEX(name, field) \
	54	IEEE80211_IF_FMT(name, field, "%#x\n")
	55	#define IEEE80211_IF_FMT_SIZE(name, field) \
	56	IEEE80211_IF_FMT(name, field, "%zd\n")
	57
	58	#define IEEE80211_IF_FMT_ATOMIC(name, field) \
	59	static ssize_t ieee80211_if_fmt_##name( \
	60	const struct ieee80211_sub_if_data *sdata, \
	61	char *buf, int buflen) \
	62	{ \
	63	return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
	64	}
	65
	66	#define IEEE80211_IF_FMT_MAC(name, field) \
	67	static ssize_t ieee80211_if_fmt_##name( \
	68	const struct ieee80211_sub_if_data sdata, char buf, \
	69	int buflen) \
	70	{ \
0c68ae26	71	return scnprintf(buf, buflen, "%pM\n", sdata->field); \
e9f207f0 JB	72	}
	73
	74	#define __IEEE80211_IF_FILE(name) \
	75	static ssize_t ieee80211_if_read_##name(struct file *file, \
	76	char __user *userbuf, \
	77	size_t count, loff_t *ppos) \
	78	{ \
	79	return ieee80211_if_read(file->private_data, \
	80	userbuf, count, ppos, \
	81	ieee80211_if_fmt_##name); \
	82	} \
	83	static const struct file_operations name##_ops = { \
	84	.read = ieee80211_if_read_##name, \
	85	.open = mac80211_open_file_generic, \
	86	}
	87
	88	#define IEEE80211_IF_FILE(name, field, format) \
	89	IEEE80211_IF_FMT_##format(name, field) \
	90	__IEEE80211_IF_FILE(name)
	91
	92	/* common attributes */
e9f207f0	93	IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
3e122be0 JB	94	IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
3e122be0 JB	95	IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
e9f207f0	96
46900298 JB	97	/* STA attributes */
	98	IEEE80211_IF_FILE(state, u.mgd.state, DEC);
	99	IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
	100	IEEE80211_IF_FILE(prev_bssid, u.mgd.prev_bssid, MAC);
	101	IEEE80211_IF_FILE(ssid_len, u.mgd.ssid_len, SIZE);
	102	IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
	103	IEEE80211_IF_FILE(ap_capab, u.mgd.ap_capab, HEX);
	104	IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
	105	IEEE80211_IF_FILE(extra_ie_len, u.mgd.extra_ie_len, SIZE);
	106	IEEE80211_IF_FILE(auth_tries, u.mgd.auth_tries, DEC);
	107	IEEE80211_IF_FILE(assoc_tries, u.mgd.assoc_tries, DEC);
	108	IEEE80211_IF_FILE(auth_algs, u.mgd.auth_algs, HEX);
	109	IEEE80211_IF_FILE(auth_alg, u.mgd.auth_alg, DEC);
	110	IEEE80211_IF_FILE(auth_transaction, u.mgd.auth_transaction, DEC);
e9f207f0 JB	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",
46900298 JB	116	sdata->u.mgd.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
	117	sdata->u.mgd.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
	118	sdata->u.mgd.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
	119	sdata->u.mgd.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
	120	sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
	121	sdata->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
bda3933a	122	sdata->vif.bss_conf.use_cts_prot ? "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);
e9f207f0	128	IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
e9f207f0 JB	129
	130	static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	131	const struct ieee80211_sub_if_data sdata, char buf, int buflen)
	132	{
	133	return scnprintf(buf, buflen, "%u\n",
	134	skb_queue_len(&sdata->u.ap.ps_bc_buf));
	135	}
	136	__IEEE80211_IF_FILE(num_buffered_multicast);
	137
e9f207f0 JB	138	/* WDS attributes */
	139	IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
	140
9f42f607 LCC	141	#ifdef CONFIG_MAC80211_MESH
9f42f607 LCC	142	/* Mesh stats attributes */
472dbc45 JB	143	IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
472dbc45 JB	144	IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
9f42f607	145	IEEE80211_IF_FILE(dropped_frames_no_route,
472dbc45 JB	146	u.mesh.mshstats.dropped_frames_no_route, DEC);
472dbc45 JB	147	IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
9f42f607 LCC	148
9f42f607 LCC	149	/* Mesh parameters */
36ff382d JB	150	IEEE80211_IF_FILE(dot11MeshMaxRetries,
	151	u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
	152	IEEE80211_IF_FILE(dot11MeshRetryTimeout,
	153	u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
	154	IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
	155	u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
	156	IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
	157	u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
	158	IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
	159	IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
	160	IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
	161	u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
	162	IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
	163	u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
	164	IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
	165	u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
	166	IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
	167	u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
	168	IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
	169	u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
	170	IEEE80211_IF_FILE(path_refresh_time,
	171	u.mesh.mshcfg.path_refresh_time, DEC);
	172	IEEE80211_IF_FILE(min_discovery_timeout,
	173	u.mesh.mshcfg.min_discovery_timeout, DEC);
9f42f607 LCC	174	#endif
	175
	176
e9f207f0	177	#define DEBUGFS_ADD(name, type)\
bebb8a5e	178	sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
e9f207f0 JB	179	sdata->debugfsdir, sdata, &name##_ops);
	180
	181	static void add_sta_files(struct ieee80211_sub_if_data *sdata)
	182	{
e9f207f0	183	DEBUGFS_ADD(drop_unencrypted, sta);
93015f0f JM	184	DEBUGFS_ADD(force_unicast_rateidx, sta);
93015f0f JM	185	DEBUGFS_ADD(max_ratectrl_rateidx, sta);
3e122be0	186
e9f207f0 JB	187	DEBUGFS_ADD(state, sta);
	188	DEBUGFS_ADD(bssid, sta);
	189	DEBUGFS_ADD(prev_bssid, sta);
	190	DEBUGFS_ADD(ssid_len, sta);
	191	DEBUGFS_ADD(aid, sta);
	192	DEBUGFS_ADD(ap_capab, sta);
	193	DEBUGFS_ADD(capab, sta);
	194	DEBUGFS_ADD(extra_ie_len, sta);
	195	DEBUGFS_ADD(auth_tries, sta);
	196	DEBUGFS_ADD(assoc_tries, sta);
	197	DEBUGFS_ADD(auth_algs, sta);
	198	DEBUGFS_ADD(auth_alg, sta);
	199	DEBUGFS_ADD(auth_transaction, sta);
	200	DEBUGFS_ADD(flags, sta);
	201	}
	202
	203	static void add_ap_files(struct ieee80211_sub_if_data *sdata)
	204	{
e9f207f0	205	DEBUGFS_ADD(drop_unencrypted, ap);
3e122be0 JB	206	DEBUGFS_ADD(force_unicast_rateidx, ap);
	207	DEBUGFS_ADD(max_ratectrl_rateidx, ap);
	208
e9f207f0	209	DEBUGFS_ADD(num_sta_ps, ap);
e9f207f0	210	DEBUGFS_ADD(dtim_count, ap);
e9f207f0	211	DEBUGFS_ADD(num_buffered_multicast, ap);
e9f207f0 JB	212	}
	213
	214	static void add_wds_files(struct ieee80211_sub_if_data *sdata)
	215	{
e9f207f0	216	DEBUGFS_ADD(drop_unencrypted, wds);
93015f0f JM	217	DEBUGFS_ADD(force_unicast_rateidx, wds);
93015f0f JM	218	DEBUGFS_ADD(max_ratectrl_rateidx, wds);
3e122be0	219
e9f207f0 JB	220	DEBUGFS_ADD(peer, wds);
	221	}
	222
	223	static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
	224	{
e9f207f0	225	DEBUGFS_ADD(drop_unencrypted, vlan);
93015f0f JM	226	DEBUGFS_ADD(force_unicast_rateidx, vlan);
93015f0f JM	227	DEBUGFS_ADD(max_ratectrl_rateidx, vlan);
e9f207f0 JB	228	}
	229
	230	static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
	231	{
e9f207f0 JB	232	}
e9f207f0 JB	233
9f42f607 LCC	234	#ifdef CONFIG_MAC80211_MESH
9f42f607 LCC	235	#define MESHSTATS_ADD(name)\
bebb8a5e	236	sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
9f42f607 LCC	237	sdata->mesh_stats_dir, sdata, &name##_ops);
	238
	239	static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
	240	{
	241	sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
	242	sdata->debugfsdir);
	243	MESHSTATS_ADD(fwded_frames);
	244	MESHSTATS_ADD(dropped_frames_ttl);
	245	MESHSTATS_ADD(dropped_frames_no_route);
	246	MESHSTATS_ADD(estab_plinks);
	247	}
	248
	249	#define MESHPARAMS_ADD(name)\
bebb8a5e	250	sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
9f42f607 LCC	251	sdata->mesh_config_dir, sdata, &name##_ops);
	252
	253	static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
	254	{
	255	sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
	256	sdata->debugfsdir);
	257	MESHPARAMS_ADD(dot11MeshMaxRetries);
	258	MESHPARAMS_ADD(dot11MeshRetryTimeout);
	259	MESHPARAMS_ADD(dot11MeshConfirmTimeout);
	260	MESHPARAMS_ADD(dot11MeshHoldingTimeout);
	261	MESHPARAMS_ADD(dot11MeshTTL);
	262	MESHPARAMS_ADD(auto_open_plinks);
	263	MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
	264	MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
	265	MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
	266	MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
	267	MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
	268	MESHPARAMS_ADD(path_refresh_time);
	269	MESHPARAMS_ADD(min_discovery_timeout);
	270	}
	271	#endif
	272
e9f207f0 JB	273	static void add_files(struct ieee80211_sub_if_data *sdata)
	274	{
	275	if (!sdata->debugfsdir)
	276	return;
	277
51fb61e7	278	switch (sdata->vif.type) {
05c914fe	279	case NL80211_IFTYPE_MESH_POINT:
9f42f607 LCC	280	#ifdef CONFIG_MAC80211_MESH
	281	add_mesh_stats(sdata);
	282	add_mesh_config(sdata);
	283	#endif
472dbc45	284	break;
05c914fe	285	case NL80211_IFTYPE_STATION:
e9f207f0 JB	286	add_sta_files(sdata);
e9f207f0 JB	287	break;
46900298 JB	288	case NL80211_IFTYPE_ADHOC:
	289	/* XXX */
	290	break;
05c914fe	291	case NL80211_IFTYPE_AP:
e9f207f0 JB	292	add_ap_files(sdata);
e9f207f0 JB	293	break;
05c914fe	294	case NL80211_IFTYPE_WDS:
e9f207f0 JB	295	add_wds_files(sdata);
e9f207f0 JB	296	break;
05c914fe	297	case NL80211_IFTYPE_MONITOR:
e9f207f0 JB	298	add_monitor_files(sdata);
e9f207f0 JB	299	break;
05c914fe	300	case NL80211_IFTYPE_AP_VLAN:
e9f207f0 JB	301	add_vlan_files(sdata);
	302	break;
	303	default:
	304	break;
	305	}
	306	}
	307
21887b2f ZY	308	#define DEBUGFS_DEL(name, type) \
	309	do { \
	310	debugfs_remove(sdata->debugfs.type.name); \
	311	sdata->debugfs.type.name = NULL; \
	312	} while (0)
e9f207f0 JB	313
	314	static void del_sta_files(struct ieee80211_sub_if_data *sdata)
	315	{
e9f207f0	316	DEBUGFS_DEL(drop_unencrypted, sta);
93015f0f JM	317	DEBUGFS_DEL(force_unicast_rateidx, sta);
93015f0f JM	318	DEBUGFS_DEL(max_ratectrl_rateidx, sta);
3e122be0	319
e9f207f0 JB	320	DEBUGFS_DEL(state, sta);
	321	DEBUGFS_DEL(bssid, sta);
	322	DEBUGFS_DEL(prev_bssid, sta);
	323	DEBUGFS_DEL(ssid_len, sta);
	324	DEBUGFS_DEL(aid, sta);
	325	DEBUGFS_DEL(ap_capab, sta);
	326	DEBUGFS_DEL(capab, sta);
	327	DEBUGFS_DEL(extra_ie_len, sta);
	328	DEBUGFS_DEL(auth_tries, sta);
	329	DEBUGFS_DEL(assoc_tries, sta);
	330	DEBUGFS_DEL(auth_algs, sta);
	331	DEBUGFS_DEL(auth_alg, sta);
	332	DEBUGFS_DEL(auth_transaction, sta);
	333	DEBUGFS_DEL(flags, sta);
	334	}
	335
	336	static void del_ap_files(struct ieee80211_sub_if_data *sdata)
	337	{
e9f207f0	338	DEBUGFS_DEL(drop_unencrypted, ap);
3e122be0 JB	339	DEBUGFS_DEL(force_unicast_rateidx, ap);
	340	DEBUGFS_DEL(max_ratectrl_rateidx, ap);
	341
e9f207f0	342	DEBUGFS_DEL(num_sta_ps, ap);
e9f207f0	343	DEBUGFS_DEL(dtim_count, ap);
e9f207f0	344	DEBUGFS_DEL(num_buffered_multicast, ap);
e9f207f0 JB	345	}
	346
	347	static void del_wds_files(struct ieee80211_sub_if_data *sdata)
	348	{
e9f207f0	349	DEBUGFS_DEL(drop_unencrypted, wds);
93015f0f JM	350	DEBUGFS_DEL(force_unicast_rateidx, wds);
93015f0f JM	351	DEBUGFS_DEL(max_ratectrl_rateidx, wds);
3e122be0	352
e9f207f0 JB	353	DEBUGFS_DEL(peer, wds);
	354	}
	355
	356	static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
	357	{
e9f207f0	358	DEBUGFS_DEL(drop_unencrypted, vlan);
93015f0f JM	359	DEBUGFS_DEL(force_unicast_rateidx, vlan);
93015f0f JM	360	DEBUGFS_DEL(max_ratectrl_rateidx, vlan);
e9f207f0 JB	361	}
	362
	363	static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
	364	{
e9f207f0 JB	365	}
e9f207f0 JB	366
9f42f607 LCC	367	#ifdef CONFIG_MAC80211_MESH
	368	#define MESHSTATS_DEL(name) \
	369	do { \
	370	debugfs_remove(sdata->mesh_stats.name); \
	371	sdata->mesh_stats.name = NULL; \
	372	} while (0)
	373
	374	static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
	375	{
	376	MESHSTATS_DEL(fwded_frames);
	377	MESHSTATS_DEL(dropped_frames_ttl);
	378	MESHSTATS_DEL(dropped_frames_no_route);
	379	MESHSTATS_DEL(estab_plinks);
	380	debugfs_remove(sdata->mesh_stats_dir);
	381	sdata->mesh_stats_dir = NULL;
	382	}
	383
	384	#define MESHPARAMS_DEL(name) \
	385	do { \
	386	debugfs_remove(sdata->mesh_config.name); \
	387	sdata->mesh_config.name = NULL; \
	388	} while (0)
	389
	390	static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
	391	{
	392	MESHPARAMS_DEL(dot11MeshMaxRetries);
	393	MESHPARAMS_DEL(dot11MeshRetryTimeout);
	394	MESHPARAMS_DEL(dot11MeshConfirmTimeout);
	395	MESHPARAMS_DEL(dot11MeshHoldingTimeout);
	396	MESHPARAMS_DEL(dot11MeshTTL);
	397	MESHPARAMS_DEL(auto_open_plinks);
	398	MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
	399	MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
	400	MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
	401	MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
	402	MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
	403	MESHPARAMS_DEL(path_refresh_time);
	404	MESHPARAMS_DEL(min_discovery_timeout);
	405	debugfs_remove(sdata->mesh_config_dir);
	406	sdata->mesh_config_dir = NULL;
	407	}
	408	#endif
	409
75636525	410	static void del_files(struct ieee80211_sub_if_data *sdata)
e9f207f0 JB	411	{
	412	if (!sdata->debugfsdir)
	413	return;
	414
75636525	415	switch (sdata->vif.type) {
05c914fe	416	case NL80211_IFTYPE_MESH_POINT:
9f42f607 LCC	417	#ifdef CONFIG_MAC80211_MESH
	418	del_mesh_stats(sdata);
	419	del_mesh_config(sdata);
	420	#endif
472dbc45	421	break;
05c914fe	422	case NL80211_IFTYPE_STATION:
e9f207f0 JB	423	del_sta_files(sdata);
e9f207f0 JB	424	break;
46900298 JB	425	case NL80211_IFTYPE_ADHOC:
	426	/* XXX */
	427	break;
05c914fe	428	case NL80211_IFTYPE_AP:
e9f207f0 JB	429	del_ap_files(sdata);
e9f207f0 JB	430	break;
05c914fe	431	case NL80211_IFTYPE_WDS:
e9f207f0 JB	432	del_wds_files(sdata);
e9f207f0 JB	433	break;
05c914fe	434	case NL80211_IFTYPE_MONITOR:
e9f207f0 JB	435	del_monitor_files(sdata);
e9f207f0 JB	436	break;
05c914fe	437	case NL80211_IFTYPE_AP_VLAN:
e9f207f0 JB	438	del_vlan_files(sdata);
	439	break;
	440	default:
	441	break;
	442	}
	443	}
	444
	445	static int notif_registered;
	446
	447	void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
	448	{
	449	char buf[10+IFNAMSIZ];
	450
	451	if (!notif_registered)
	452	return;
	453
	454	sprintf(buf, "netdev:%s", sdata->dev->name);
	455	sdata->debugfsdir = debugfs_create_dir(buf,
	456	sdata->local->hw.wiphy->debugfsdir);
75636525	457	add_files(sdata);
e9f207f0 JB	458	}
	459
	460	void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
	461	{
75636525	462	del_files(sdata);
e9f207f0 JB	463	debugfs_remove(sdata->debugfsdir);
	464	sdata->debugfsdir = NULL;
	465	}
	466
988c0f72	467	static int netdev_notify(struct notifier_block *nb,
e9f207f0 JB	468	unsigned long state,
	469	void *ndev)
	470	{
	471	struct net_device *dev = ndev;
7c8081eb	472	struct dentry *dir;
3e122be0	473	struct ieee80211_sub_if_data *sdata;
e9f207f0 JB	474	char buf[10+IFNAMSIZ];
	475
	476	if (state != NETDEV_CHANGENAME)
	477	return 0;
	478
	479	if (!dev->ieee80211_ptr \|\| !dev->ieee80211_ptr->wiphy)
	480	return 0;
	481
	482	if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
	483	return 0;
	484
3e122be0 JB	485	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3e122be0 JB	486
7c8081eb	487	dir = sdata->debugfsdir;
c74e90a9 JB	488
	489	if (!dir)
	490	return 0;
	491
	492	sprintf(buf, "netdev:%s", dev->name);
7c8081eb JB	493	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
	494	printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
	495	"dir to %s\n", buf);
e9f207f0 JB	496
	497	return 0;
	498	}
	499
	500	static struct notifier_block mac80211_debugfs_netdev_notifier = {
	501	.notifier_call = netdev_notify,
	502	};
	503
	504	void ieee80211_debugfs_netdev_init(void)
	505	{
	506	int err;
	507
	508	err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	509	if (err) {
	510	printk(KERN_ERR
	511	"mac80211: failed to install netdev notifier,"
	512	" disabling per-netdev debugfs!\n");
	513	} else
	514	notif_registered = 1;
	515	}
	516
	517	void ieee80211_debugfs_netdev_exit(void)
	518	{
	519	unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
	520	notif_registered = 0;
	521	}