[linux-2.6-block.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 "ieee80211_i.h"
#include "ieee80211_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);

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;
	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.iv32,
				key->u.tkip.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;
	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.iv32_rx[i],
				       key->u.tkip.iv16_rx[i]);
		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;
	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;

	if (key->conf.alg != ALG_CCMP)
		return 0;
	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(replays);

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

void ieee80211_debugfs_key_add(struct ieee80211_local *local,
			       struct ieee80211_key *key)
{
	static int keycount;
	char buf[20];

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

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

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

	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(key);
};

#define DEBUGFS_DEL(name) \
	debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;

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

	DEBUGFS_DEL(keylen);
	DEBUGFS_DEL(flags);
	DEBUGFS_DEL(keyidx);
	DEBUGFS_DEL(hw_key_idx);
	DEBUGFS_DEL(tx_rx_count);
	DEBUGFS_DEL(algorithm);
	DEBUGFS_DEL(tx_spec);
	DEBUGFS_DEL(rx_spec);
	DEBUGFS_DEL(replays);
	DEBUGFS_DEL(key);

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

	if (!sdata->debugfsdir)
		return;

	sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx);
	sdata->debugfs.default_key =
		debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
}
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_sta_link(struct ieee80211_key *key,
				    struct sta_info *sta)
{
	char buf[50];

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

	sprintf(buf, "../../stations/" MAC_FMT, MAC_ARG(sta->addr));
	key->debugfs.stalink =
		debugfs_create_symlink("station", key->debugfs.dir, buf);
}

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>
	12	#include "ieee80211_i.h"
	13	#include "ieee80211_key.h"
	14	#include "debugfs.h"
	15	#include "debugfs_key.h"
	16
8f20fc24	17	#define KEY_READ(name, prop, buflen, format_string) \
e9f207f0 JB	18	static ssize_t key_##name##_read(struct file *file, \
	19	char __user *userbuf, \
	20	size_t count, loff_t *ppos) \
	21	{ \
	22	char buf[buflen]; \
	23	struct ieee80211_key *key = file->private_data; \
8f20fc24	24	int res = scnprintf(buf, buflen, format_string, key->prop); \
e9f207f0 JB	25	return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
e9f207f0 JB	26	}
8f20fc24	27	#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
11a843b7	28	#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
e9f207f0 JB	29
	30	#define KEY_OPS(name) \
	31	static const struct file_operations key_ ##name## _ops = { \
	32	.read = key_##name##_read, \
	33	.open = mac80211_open_file_generic, \
	34	}
	35
	36	#define KEY_FILE(name, format) \
	37	KEY_READ_##format(name) \
	38	KEY_OPS(name)
	39
8f20fc24 JB	40	#define KEY_CONF_READ(name, buflen, format_string) \
	41	KEY_READ(conf_##name, conf.name, buflen, format_string)
	42	#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
8f20fc24 JB	43
	44	#define KEY_CONF_OPS(name) \
	45	static const struct file_operations key_ ##name## _ops = { \
	46	.read = key_conf_##name##_read, \
	47	.open = mac80211_open_file_generic, \
	48	}
	49
	50	#define KEY_CONF_FILE(name, format) \
	51	KEY_CONF_READ_##format(name) \
	52	KEY_CONF_OPS(name)
	53
	54	KEY_CONF_FILE(keylen, D);
	55	KEY_CONF_FILE(keyidx, D);
	56	KEY_CONF_FILE(hw_key_idx, D);
11a843b7	57	KEY_FILE(flags, X);
e9f207f0 JB	58	KEY_FILE(tx_rx_count, D);
	59
	60	static ssize_t key_algorithm_read(struct file *file,
	61	char __user *userbuf,
	62	size_t count, loff_t *ppos)
	63	{
	64	char *alg;
	65	struct ieee80211_key *key = file->private_data;
	66
8f20fc24	67	switch (key->conf.alg) {
e9f207f0 JB	68	case ALG_WEP:
	69	alg = "WEP\n";
	70	break;
	71	case ALG_TKIP:
	72	alg = "TKIP\n";
	73	break;
	74	case ALG_CCMP:
	75	alg = "CCMP\n";
	76	break;
	77	default:
	78	return 0;
	79	}
	80	return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
	81	}
	82	KEY_OPS(algorithm);
	83
	84	static ssize_t key_tx_spec_read(struct file file, char __user userbuf,
	85	size_t count, loff_t *ppos)
	86	{
	87	const u8 *tpn;
	88	char buf[20];
	89	int len;
	90	struct ieee80211_key *key = file->private_data;
	91
8f20fc24	92	switch (key->conf.alg) {
e9f207f0 JB	93	case ALG_WEP:
e9f207f0 JB	94	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	95	break;
e9f207f0 JB	96	case ALG_TKIP:
	97	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
	98	key->u.tkip.iv32,
	99	key->u.tkip.iv16);
50339a67	100	break;
e9f207f0 JB	101	case ALG_CCMP:
	102	tpn = key->u.ccmp.tx_pn;
	103	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	104	tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
50339a67	105	break;
e9f207f0 JB	106	default:
	107	return 0;
	108	}
	109	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	110	}
	111	KEY_OPS(tx_spec);
	112
	113	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	114	size_t count, loff_t *ppos)
	115	{
	116	struct ieee80211_key *key = file->private_data;
	117	char buf[14NUM_RX_DATA_QUEUES+1], p = buf;
	118	int i, len;
	119	const u8 *rpn;
	120
8f20fc24	121	switch (key->conf.alg) {
e9f207f0 JB	122	case ALG_WEP:
e9f207f0 JB	123	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	124	break;
e9f207f0 JB	125	case ALG_TKIP:
	126	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
	127	p += scnprintf(p, sizeof(buf)+buf-p,
	128	"%08x %04x\n",
	129	key->u.tkip.iv32_rx[i],
	130	key->u.tkip.iv16_rx[i]);
	131	len = p - buf;
50339a67	132	break;
e9f207f0 JB	133	case ALG_CCMP:
	134	for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
	135	rpn = key->u.ccmp.rx_pn[i];
	136	p += scnprintf(p, sizeof(buf)+buf-p,
	137	"%02x%02x%02x%02x%02x%02x\n",
	138	rpn[0], rpn[1], rpn[2],
	139	rpn[3], rpn[4], rpn[5]);
	140	}
	141	len = p - buf;
50339a67	142	break;
e9f207f0 JB	143	default:
	144	return 0;
	145	}
	146	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	147	}
	148	KEY_OPS(rx_spec);
	149
	150	static ssize_t key_replays_read(struct file file, char __user userbuf,
	151	size_t count, loff_t *ppos)
	152	{
	153	struct ieee80211_key *key = file->private_data;
	154	char buf[20];
	155	int len;
	156
8f20fc24	157	if (key->conf.alg != ALG_CCMP)
e9f207f0 JB	158	return 0;
	159	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
	160	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	161	}
	162	KEY_OPS(replays);
	163
	164	static ssize_t key_key_read(struct file file, char __user userbuf,
	165	size_t count, loff_t *ppos)
	166	{
	167	struct ieee80211_key *key = file->private_data;
8f20fc24	168	int i, res, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	169	char *buf = kmalloc(bufsize, GFP_KERNEL);
	170	char *p = buf;
	171
8f20fc24 JB	172	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	173	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	174	p += scnprintf(p, bufsize+buf-p, "\n");
	175	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	176	kfree(buf);
	177	return res;
	178	}
	179	KEY_OPS(key);
	180
	181	#define DEBUGFS_ADD(name) \
	182	key->debugfs.name = debugfs_create_file(#name, 0400,\
	183	key->debugfs.dir, key, &key_##name##_ops);
	184
	185	void ieee80211_debugfs_key_add(struct ieee80211_local *local,
	186	struct ieee80211_key *key)
	187	{
50339a67	188	static int keycount;
e9f207f0 JB	189	char buf[20];
	190
	191	if (!local->debugfs.keys)
	192	return;
	193
50339a67 JB	194	sprintf(buf, "%d", keycount);
50339a67 JB	195	keycount++;
e9f207f0 JB	196	key->debugfs.dir = debugfs_create_dir(buf,
	197	local->debugfs.keys);
	198
	199	if (!key->debugfs.dir)
	200	return;
	201
	202	DEBUGFS_ADD(keylen);
8f20fc24	203	DEBUGFS_ADD(flags);
e9f207f0 JB	204	DEBUGFS_ADD(keyidx);
	205	DEBUGFS_ADD(hw_key_idx);
	206	DEBUGFS_ADD(tx_rx_count);
	207	DEBUGFS_ADD(algorithm);
	208	DEBUGFS_ADD(tx_spec);
	209	DEBUGFS_ADD(rx_spec);
	210	DEBUGFS_ADD(replays);
	211	DEBUGFS_ADD(key);
	212	};
	213
	214	#define DEBUGFS_DEL(name) \
	215	debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
	216
	217	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	218	{
	219	if (!key)
	220	return;
	221
	222	DEBUGFS_DEL(keylen);
8f20fc24	223	DEBUGFS_DEL(flags);
e9f207f0 JB	224	DEBUGFS_DEL(keyidx);
	225	DEBUGFS_DEL(hw_key_idx);
	226	DEBUGFS_DEL(tx_rx_count);
	227	DEBUGFS_DEL(algorithm);
	228	DEBUGFS_DEL(tx_spec);
	229	DEBUGFS_DEL(rx_spec);
	230	DEBUGFS_DEL(replays);
	231	DEBUGFS_DEL(key);
	232
	233	debugfs_remove(key->debugfs.stalink);
	234	key->debugfs.stalink = NULL;
	235	debugfs_remove(key->debugfs.dir);
	236	key->debugfs.dir = NULL;
	237	}
	238	void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
	239	{
	240	char buf[50];
	241
	242	if (!sdata->debugfsdir)
	243	return;
	244
8f20fc24	245	sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx);
e9f207f0 JB	246	sdata->debugfs.default_key =
	247	debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
	248	}
	249	void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
	250	{
	251	if (!sdata)
	252	return;
	253
	254	debugfs_remove(sdata->debugfs.default_key);
	255	sdata->debugfs.default_key = NULL;
	256	}
	257	void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
	258	struct sta_info *sta)
	259	{
	260	char buf[50];
	261
	262	if (!key->debugfs.dir)
	263	return;
	264
50339a67	265	sprintf(buf, "../../stations/" MAC_FMT, MAC_ARG(sta->addr));
e9f207f0 JB	266	key->debugfs.stalink =
	267	debugfs_create_symlink("station", key->debugfs.dir, buf);
	268	}
	269
	270	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	271	struct sta_info *sta)
	272	{
	273	debugfs_remove(key->debugfs.stalink);
	274	key->debugfs.stalink = NULL;
	275	}