[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / debugfs_key.c

/*
 * Copyright 2003-2005	Devicescape Software, Inc.
 * 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/kobject.h>
#include <linux/slab.h>
#include "ieee80211_i.h"
#include "key.h"
#include "debugfs.h"
#include "debugfs_key.h"

#define KEY_READ(name, prop, buflen, format_string)			\
static ssize_t key_##name##_read(struct file *file,			\
				 char __user *userbuf,			\
				 size_t count, loff_t *ppos)		\
{									\
	char buf[buflen];						\
	struct ieee80211_key *key = file->private_data;			\
	int res = scnprintf(buf, buflen, format_string, key->prop);	\
	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
}
#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")

#define KEY_OPS(name)							\
static const struct file_operations key_ ##name## _ops = {		\
	.read = key_##name##_read,					\
	.open = mac80211_open_file_generic,				\
}

#define KEY_FILE(name, format)						\
		 KEY_READ_##format(name)				\
		 KEY_OPS(name)

#define KEY_CONF_READ(name, buflen, format_string)			\
	KEY_READ(conf_##name, conf.name, buflen, format_string)
#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")

#define KEY_CONF_OPS(name)						\
static const struct file_operations key_ ##name## _ops = {		\
	.read = key_conf_##name##_read,					\
	.open = mac80211_open_file_generic,				\
}

#define KEY_CONF_FILE(name, format)					\
		 KEY_CONF_READ_##format(name)				\
		 KEY_CONF_OPS(name)

KEY_CONF_FILE(keylen, D);
KEY_CONF_FILE(keyidx, D);
KEY_CONF_FILE(hw_key_idx, D);
KEY_FILE(flags, X);
KEY_FILE(tx_rx_count, D);
KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
KEY_OPS(ifindex);

static ssize_t key_algorithm_read(struct file *file,
				  char __user *userbuf,
				  size_t count, loff_t *ppos)
{
	char *alg;
	struct ieee80211_key *key = file->private_data;

	switch (key->conf.alg) {
	case ALG_WEP:
		alg = "WEP\n";
		break;
	case ALG_TKIP:
		alg = "TKIP\n";
		break;
	case ALG_CCMP:
		alg = "CCMP\n";
		break;
	case ALG_AES_CMAC:
		alg = "AES-128-CMAC\n";
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
}
KEY_OPS(algorithm);

static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	const u8 *tpn;
	char buf[20];
	int len;
	struct ieee80211_key *key = file->private_data;

	switch (key->conf.alg) {
	case ALG_WEP:
		len = scnprintf(buf, sizeof(buf), "\n");
		break;
	case ALG_TKIP:
		len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
				key->u.tkip.tx.iv32,
				key->u.tkip.tx.iv16);
		break;
	case ALG_CCMP:
		tpn = key->u.ccmp.tx_pn;
		len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
				tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
		break;
	case ALG_AES_CMAC:
		tpn = key->u.aes_cmac.tx_pn;
		len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
				tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
				tpn[5]);
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(tx_spec);

static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	struct ieee80211_key *key = file->private_data;
	char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
	int i, len;
	const u8 *rpn;

	switch (key->conf.alg) {
	case ALG_WEP:
		len = scnprintf(buf, sizeof(buf), "\n");
		break;
	case ALG_TKIP:
		for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
			p += scnprintf(p, sizeof(buf)+buf-p,
				       "%08x %04x\n",
				       key->u.tkip.rx[i].iv32,
				       key->u.tkip.rx[i].iv16);
		len = p - buf;
		break;
	case ALG_CCMP:
		for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
			rpn = key->u.ccmp.rx_pn[i];
			p += scnprintf(p, sizeof(buf)+buf-p,
				       "%02x%02x%02x%02x%02x%02x\n",
				       rpn[0], rpn[1], rpn[2],
				       rpn[3], rpn[4], rpn[5]);
		}
		len = p - buf;
		break;
	case ALG_AES_CMAC:
		rpn = key->u.aes_cmac.rx_pn;
		p += scnprintf(p, sizeof(buf)+buf-p,
			       "%02x%02x%02x%02x%02x%02x\n",
			       rpn[0], rpn[1], rpn[2],
			       rpn[3], rpn[4], rpn[5]);
		len = p - buf;
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(rx_spec);

static ssize_t key_replays_read(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	struct ieee80211_key *key = file->private_data;
	char buf[20];
	int len;

	switch (key->conf.alg) {
	case ALG_CCMP:
		len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
		break;
	case ALG_AES_CMAC:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_cmac.replays);
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(replays);

static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
				  size_t count, loff_t *ppos)
{
	struct ieee80211_key *key = file->private_data;
	char buf[20];
	int len;

	switch (key->conf.alg) {
	case ALG_AES_CMAC:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_cmac.icverrors);
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(icverrors);

static ssize_t key_key_read(struct file *file, char __user *userbuf,
			    size_t count, loff_t *ppos)
{
	struct ieee80211_key *key = file->private_data;
	int i, res, bufsize = 2 * key->conf.keylen + 2;
	char *buf = kmalloc(bufsize, GFP_KERNEL);
	char *p = buf;

	for (i = 0; i < key->conf.keylen; i++)
		p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
	p += scnprintf(p, bufsize+buf-p, "\n");
	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	kfree(buf);
	return res;
}
KEY_OPS(key);

#define DEBUGFS_ADD(name) \
	debugfs_create_file(#name, 0400, key->debugfs.dir, \
			    key, &key_##name##_ops);

void ieee80211_debugfs_key_add(struct ieee80211_key *key)
  {
	static int keycount;
	char buf[50];
	struct sta_info *sta;

	if (!key->local->debugfs.keys)
		return;

	sprintf(buf, "%d", keycount);
	key->debugfs.cnt = keycount;
	keycount++;
	key->debugfs.dir = debugfs_create_dir(buf,
					key->local->debugfs.keys);

	if (!key->debugfs.dir)
		return;

	rcu_read_lock();
	sta = rcu_dereference(key->sta);
	if (sta)
		sprintf(buf, "../../stations/%pM", sta->sta.addr);
	rcu_read_unlock();

	/* using sta as a boolean is fine outside RCU lock */
	if (sta)
		key->debugfs.stalink =
			debugfs_create_symlink("station", key->debugfs.dir, buf);

	DEBUGFS_ADD(keylen);
	DEBUGFS_ADD(flags);
	DEBUGFS_ADD(keyidx);
	DEBUGFS_ADD(hw_key_idx);
	DEBUGFS_ADD(tx_rx_count);
	DEBUGFS_ADD(algorithm);
	DEBUGFS_ADD(tx_spec);
	DEBUGFS_ADD(rx_spec);
	DEBUGFS_ADD(replays);
	DEBUGFS_ADD(icverrors);
	DEBUGFS_ADD(key);
	DEBUGFS_ADD(ifindex);
};

void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
{
	if (!key)
		return;

	debugfs_remove_recursive(key->debugfs.dir);
	key->debugfs.dir = NULL;
}
void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
{
	char buf[50];
	struct ieee80211_key *key;

	if (!sdata->debugfs.dir)
		return;

	/* this is running under the key lock */

	key = sdata->default_key;
	if (key) {
		sprintf(buf, "../keys/%d", key->debugfs.cnt);
		sdata->debugfs.default_key =
			debugfs_create_symlink("default_key",
					       sdata->debugfs.dir, buf);
	} else
		ieee80211_debugfs_key_remove_default(sdata);
}

void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
{
	if (!sdata)
		return;

	debugfs_remove(sdata->debugfs.default_key);
	sdata->debugfs.default_key = NULL;
}

void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
{
	char buf[50];
	struct ieee80211_key *key;

	if (!sdata->debugfs.dir)
		return;

	/* this is running under the key lock */

	key = sdata->default_mgmt_key;
	if (key) {
		sprintf(buf, "../keys/%d", key->debugfs.cnt);
		sdata->debugfs.default_mgmt_key =
			debugfs_create_symlink("default_mgmt_key",
					       sdata->debugfs.dir, buf);
	} else
		ieee80211_debugfs_key_remove_mgmt_default(sdata);
}

void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
{
	if (!sdata)
		return;

	debugfs_remove(sdata->debugfs.default_mgmt_key);
	sdata->debugfs.default_mgmt_key = NULL;
}

void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
				   struct sta_info *sta)
{
	debugfs_remove(key->debugfs.stalink);
	key->debugfs.stalink = NULL;
}
Commit	Line	Data
e9f207f0 JB	1	/*
	2	* Copyright 2003-2005 Devicescape Software, Inc.
	3	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	4	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/kobject.h>
5a0e3ad6	12	#include <linux/slab.h>
e9f207f0	13	#include "ieee80211_i.h"
2c8dccc7	14	#include "key.h"
e9f207f0 JB	15	#include "debugfs.h"
	16	#include "debugfs_key.h"
	17
8f20fc24	18	#define KEY_READ(name, prop, buflen, format_string) \
e9f207f0 JB	19	static ssize_t key_##name##_read(struct file *file, \
	20	char __user *userbuf, \
	21	size_t count, loff_t *ppos) \
	22	{ \
	23	char buf[buflen]; \
	24	struct ieee80211_key *key = file->private_data; \
8f20fc24	25	int res = scnprintf(buf, buflen, format_string, key->prop); \
e9f207f0 JB	26	return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
e9f207f0 JB	27	}
8f20fc24	28	#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
11a843b7	29	#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
e9f207f0 JB	30
	31	#define KEY_OPS(name) \
	32	static const struct file_operations key_ ##name## _ops = { \
	33	.read = key_##name##_read, \
	34	.open = mac80211_open_file_generic, \
	35	}
	36
	37	#define KEY_FILE(name, format) \
	38	KEY_READ_##format(name) \
	39	KEY_OPS(name)
	40
8f20fc24 JB	41	#define KEY_CONF_READ(name, buflen, format_string) \
	42	KEY_READ(conf_##name, conf.name, buflen, format_string)
	43	#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
8f20fc24 JB	44
	45	#define KEY_CONF_OPS(name) \
	46	static const struct file_operations key_ ##name## _ops = { \
	47	.read = key_conf_##name##_read, \
	48	.open = mac80211_open_file_generic, \
	49	}
	50
	51	#define KEY_CONF_FILE(name, format) \
	52	KEY_CONF_READ_##format(name) \
	53	KEY_CONF_OPS(name)
	54
	55	KEY_CONF_FILE(keylen, D);
	56	KEY_CONF_FILE(keyidx, D);
	57	KEY_CONF_FILE(hw_key_idx, D);
11a843b7	58	KEY_FILE(flags, X);
e9f207f0	59	KEY_FILE(tx_rx_count, D);
47846c9b	60	KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
e7a64f12	61	KEY_OPS(ifindex);
e9f207f0 JB	62
	63	static ssize_t key_algorithm_read(struct file *file,
	64	char __user *userbuf,
	65	size_t count, loff_t *ppos)
	66	{
	67	char *alg;
	68	struct ieee80211_key *key = file->private_data;
	69
8f20fc24	70	switch (key->conf.alg) {
e9f207f0 JB	71	case ALG_WEP:
	72	alg = "WEP\n";
	73	break;
	74	case ALG_TKIP:
	75	alg = "TKIP\n";
	76	break;
	77	case ALG_CCMP:
	78	alg = "CCMP\n";
	79	break;
3cfcf6ac JM	80	case ALG_AES_CMAC:
	81	alg = "AES-128-CMAC\n";
	82	break;
e9f207f0 JB	83	default:
	84	return 0;
	85	}
	86	return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
	87	}
	88	KEY_OPS(algorithm);
	89
	90	static ssize_t key_tx_spec_read(struct file file, char __user userbuf,
	91	size_t count, loff_t *ppos)
	92	{
	93	const u8 *tpn;
	94	char buf[20];
	95	int len;
	96	struct ieee80211_key *key = file->private_data;
	97
8f20fc24	98	switch (key->conf.alg) {
e9f207f0 JB	99	case ALG_WEP:
e9f207f0 JB	100	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	101	break;
e9f207f0 JB	102	case ALG_TKIP:
e9f207f0 JB	103	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
b0f76b33 HH	104	key->u.tkip.tx.iv32,
b0f76b33 HH	105	key->u.tkip.tx.iv16);
50339a67	106	break;
e9f207f0 JB	107	case ALG_CCMP:
	108	tpn = key->u.ccmp.tx_pn;
	109	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	110	tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
50339a67	111	break;
3cfcf6ac JM	112	case ALG_AES_CMAC:
	113	tpn = key->u.aes_cmac.tx_pn;
	114	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	115	tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
	116	tpn[5]);
	117	break;
e9f207f0 JB	118	default:
	119	return 0;
	120	}
	121	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	122	}
	123	KEY_OPS(tx_spec);
	124
	125	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	126	size_t count, loff_t *ppos)
	127	{
	128	struct ieee80211_key *key = file->private_data;
	129	char buf[14NUM_RX_DATA_QUEUES+1], p = buf;
	130	int i, len;
	131	const u8 *rpn;
	132
8f20fc24	133	switch (key->conf.alg) {
e9f207f0 JB	134	case ALG_WEP:
e9f207f0 JB	135	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	136	break;
e9f207f0 JB	137	case ALG_TKIP:
	138	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
	139	p += scnprintf(p, sizeof(buf)+buf-p,
	140	"%08x %04x\n",
b0f76b33 HH	141	key->u.tkip.rx[i].iv32,
b0f76b33 HH	142	key->u.tkip.rx[i].iv16);
e9f207f0	143	len = p - buf;
50339a67	144	break;
e9f207f0 JB	145	case ALG_CCMP:
	146	for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
	147	rpn = key->u.ccmp.rx_pn[i];
	148	p += scnprintf(p, sizeof(buf)+buf-p,
	149	"%02x%02x%02x%02x%02x%02x\n",
	150	rpn[0], rpn[1], rpn[2],
	151	rpn[3], rpn[4], rpn[5]);
	152	}
	153	len = p - buf;
50339a67	154	break;
3cfcf6ac JM	155	case ALG_AES_CMAC:
	156	rpn = key->u.aes_cmac.rx_pn;
	157	p += scnprintf(p, sizeof(buf)+buf-p,
	158	"%02x%02x%02x%02x%02x%02x\n",
	159	rpn[0], rpn[1], rpn[2],
	160	rpn[3], rpn[4], rpn[5]);
	161	len = p - buf;
	162	break;
e9f207f0 JB	163	default:
	164	return 0;
	165	}
	166	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	167	}
	168	KEY_OPS(rx_spec);
	169
	170	static ssize_t key_replays_read(struct file file, char __user userbuf,
	171	size_t count, loff_t *ppos)
	172	{
	173	struct ieee80211_key *key = file->private_data;
	174	char buf[20];
	175	int len;
	176
3cfcf6ac JM	177	switch (key->conf.alg) {
	178	case ALG_CCMP:
	179	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
	180	break;
	181	case ALG_AES_CMAC:
	182	len = scnprintf(buf, sizeof(buf), "%u\n",
	183	key->u.aes_cmac.replays);
	184	break;
	185	default:
e9f207f0	186	return 0;
3cfcf6ac	187	}
e9f207f0 JB	188	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	189	}
	190	KEY_OPS(replays);
	191
3cfcf6ac JM	192	static ssize_t key_icverrors_read(struct file file, char __user userbuf,
	193	size_t count, loff_t *ppos)
	194	{
	195	struct ieee80211_key *key = file->private_data;
	196	char buf[20];
	197	int len;
	198
	199	switch (key->conf.alg) {
	200	case ALG_AES_CMAC:
	201	len = scnprintf(buf, sizeof(buf), "%u\n",
	202	key->u.aes_cmac.icverrors);
	203	break;
	204	default:
	205	return 0;
	206	}
	207	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	208	}
	209	KEY_OPS(icverrors);
	210
e9f207f0 JB	211	static ssize_t key_key_read(struct file file, char __user userbuf,
	212	size_t count, loff_t *ppos)
	213	{
	214	struct ieee80211_key *key = file->private_data;
8f20fc24	215	int i, res, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	216	char *buf = kmalloc(bufsize, GFP_KERNEL);
	217	char *p = buf;
	218
8f20fc24 JB	219	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	220	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	221	p += scnprintf(p, bufsize+buf-p, "\n");
	222	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	223	kfree(buf);
	224	return res;
	225	}
	226	KEY_OPS(key);
	227
	228	#define DEBUGFS_ADD(name) \
7bcfaf2f JB	229	debugfs_create_file(#name, 0400, key->debugfs.dir, \
7bcfaf2f JB	230	key, &key_##name##_ops);
e9f207f0	231
3b96766f JB	232	void ieee80211_debugfs_key_add(struct ieee80211_key *key)
3b96766f JB	233	{
50339a67	234	static int keycount;
3b96766f	235	char buf[50];
3b96766f	236	struct sta_info *sta;
e9f207f0	237
3b96766f	238	if (!key->local->debugfs.keys)
e9f207f0 JB	239	return;
e9f207f0 JB	240
50339a67	241	sprintf(buf, "%d", keycount);
d9c58f30	242	key->debugfs.cnt = keycount;
50339a67	243	keycount++;
e9f207f0	244	key->debugfs.dir = debugfs_create_dir(buf,
3b96766f	245	key->local->debugfs.keys);
e9f207f0 JB	246
	247	if (!key->debugfs.dir)
	248	return;
	249
3b96766f JB	250	rcu_read_lock();
	251	sta = rcu_dereference(key->sta);
	252	if (sta)
0c68ae26	253	sprintf(buf, "../../stations/%pM", sta->sta.addr);
3b96766f JB	254	rcu_read_unlock();
	255
	256	/* using sta as a boolean is fine outside RCU lock */
	257	if (sta)
	258	key->debugfs.stalink =
	259	debugfs_create_symlink("station", key->debugfs.dir, buf);
	260
e9f207f0	261	DEBUGFS_ADD(keylen);
8f20fc24	262	DEBUGFS_ADD(flags);
e9f207f0 JB	263	DEBUGFS_ADD(keyidx);
	264	DEBUGFS_ADD(hw_key_idx);
	265	DEBUGFS_ADD(tx_rx_count);
	266	DEBUGFS_ADD(algorithm);
	267	DEBUGFS_ADD(tx_spec);
	268	DEBUGFS_ADD(rx_spec);
	269	DEBUGFS_ADD(replays);
3cfcf6ac	270	DEBUGFS_ADD(icverrors);
e9f207f0	271	DEBUGFS_ADD(key);
e7a64f12	272	DEBUGFS_ADD(ifindex);
e9f207f0 JB	273	};
e9f207f0 JB	274
e9f207f0 JB	275	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	276	{
	277	if (!key)
	278	return;
	279
7bcfaf2f	280	debugfs_remove_recursive(key->debugfs.dir);
e9f207f0 JB	281	key->debugfs.dir = NULL;
	282	}
	283	void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
	284	{
	285	char buf[50];
78520cad	286	struct ieee80211_key *key;
e9f207f0	287
7bcfaf2f	288	if (!sdata->debugfs.dir)
e9f207f0 JB	289	return;
e9f207f0 JB	290
78520cad JB	291	/* this is running under the key lock */
	292
	293	key = sdata->default_key;
	294	if (key) {
	295	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	296	sdata->debugfs.default_key =
78520cad	297	debugfs_create_symlink("default_key",
7bcfaf2f	298	sdata->debugfs.dir, buf);
78520cad JB	299	} else
78520cad JB	300	ieee80211_debugfs_key_remove_default(sdata);
e9f207f0	301	}
78520cad	302
e9f207f0 JB	303	void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
	304	{
	305	if (!sdata)
	306	return;
	307
7bcfaf2f JB	308	debugfs_remove(sdata->debugfs.default_key);
7bcfaf2f JB	309	sdata->debugfs.default_key = NULL;
e9f207f0	310	}
e9f207f0	311
3cfcf6ac JM	312	void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
	313	{
	314	char buf[50];
	315	struct ieee80211_key *key;
	316
7bcfaf2f	317	if (!sdata->debugfs.dir)
3cfcf6ac JM	318	return;
	319
	320	/* this is running under the key lock */
	321
	322	key = sdata->default_mgmt_key;
	323	if (key) {
	324	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	325	sdata->debugfs.default_mgmt_key =
3cfcf6ac	326	debugfs_create_symlink("default_mgmt_key",
7bcfaf2f	327	sdata->debugfs.dir, buf);
3cfcf6ac JM	328	} else
	329	ieee80211_debugfs_key_remove_mgmt_default(sdata);
	330	}
	331
	332	void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
	333	{
	334	if (!sdata)
	335	return;
	336
7bcfaf2f JB	337	debugfs_remove(sdata->debugfs.default_mgmt_key);
7bcfaf2f JB	338	sdata->debugfs.default_mgmt_key = NULL;
3cfcf6ac JM	339	}
3cfcf6ac JM	340
e9f207f0 JB	341	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	342	struct sta_info *sta)
	343	{
	344	debugfs_remove(key->debugfs.stalink);
	345	key->debugfs.stalink = NULL;
	346	}