[deliverable/linux.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, format_string)				\
static ssize_t key_##name##_read(struct file *file,			\
				 char __user *userbuf,			\
				 size_t count, loff_t *ppos)		\
{									\
	struct ieee80211_key *key = file->private_data;			\
	return mac80211_format_buffer(userbuf, count, ppos, 		\
				      format_string, key->prop);	\
}
#define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
#define KEY_READ_X(name) KEY_READ(name, name, "0x%x\n")

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

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

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

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

#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, "%s\n");
KEY_OPS(ifindex);

static ssize_t key_algorithm_read(struct file *file,
				  char __user *userbuf,
				  size_t count, loff_t *ppos)
{
	char buf[15];
	struct ieee80211_key *key = file->private_data;
	u32 c = key->conf.cipher;

	sprintf(buf, "%.2x-%.2x-%.2x:%d\n",
		c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
}
KEY_OPS(algorithm);

static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	u64 pn;
	char buf[20];
	int len;
	struct ieee80211_key *key = file->private_data;

	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		len = scnprintf(buf, sizeof(buf), "\n");
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
				key->u.tkip.tx.iv32,
				key->u.tkip.tx.iv16);
		break;
	case WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_CCMP_256:
	case WLAN_CIPHER_SUITE_AES_CMAC:
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
		pn = atomic64_read(&key->conf.tx_pn);
		len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
				(u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
				(u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
		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*IEEE80211_NUM_TIDS+1], *p = buf;
	int i, len;
	const u8 *rpn;

	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		len = scnprintf(buf, sizeof(buf), "\n");
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		for (i = 0; i < IEEE80211_NUM_TIDS; 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 WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_CCMP_256:
		for (i = 0; i < IEEE80211_NUM_TIDS + 1; 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 WLAN_CIPHER_SUITE_AES_CMAC:
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
		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;
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
		rpn = key->u.aes_gmac.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;
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
		for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
			rpn = key->u.gcmp.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;

	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_CCMP_256:
		len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
		break;
	case WLAN_CIPHER_SUITE_AES_CMAC:
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_cmac.replays);
		break;
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_gmac.replays);
		break;
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
		len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.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.cipher) {
	case WLAN_CIPHER_SUITE_AES_CMAC:
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_cmac.icverrors);
		break;
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
		len = scnprintf(buf, sizeof(buf), "%u\n",
				key->u.aes_gmac.icverrors);
		break;
	default:
		return 0;
	}
	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(icverrors);

static ssize_t key_mic_failures_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.cipher != WLAN_CIPHER_SUITE_TKIP)
		return -EINVAL;

	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);

	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}
KEY_OPS(mic_failures);

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, bufsize = 2 * key->conf.keylen + 2;
	char *buf = kmalloc(bufsize, GFP_KERNEL);
	char *p = buf;
	ssize_t res;

	if (!buf)
		return -ENOMEM;

	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[100];
	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;

	sta = key->sta;
	if (sta) {
		sprintf(buf, "../../netdev:%s/stations/%pM",
			sta->sdata->name, sta->sta.addr);
		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(mic_failures);
	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_update_default(struct ieee80211_sub_if_data *sdata)
{
	char buf[50];
	struct ieee80211_key *key;

	if (!sdata->vif.debugfs_dir)
		return;

	lockdep_assert_held(&sdata->local->key_mtx);

	debugfs_remove(sdata->debugfs.default_unicast_key);
	sdata->debugfs.default_unicast_key = NULL;

	if (sdata->default_unicast_key) {
		key = key_mtx_dereference(sdata->local,
					  sdata->default_unicast_key);
		sprintf(buf, "../keys/%d", key->debugfs.cnt);
		sdata->debugfs.default_unicast_key =
			debugfs_create_symlink("default_unicast_key",
					       sdata->vif.debugfs_dir, buf);
	}

	debugfs_remove(sdata->debugfs.default_multicast_key);
	sdata->debugfs.default_multicast_key = NULL;

	if (sdata->default_multicast_key) {
		key = key_mtx_dereference(sdata->local,
					  sdata->default_multicast_key);
		sprintf(buf, "../keys/%d", key->debugfs.cnt);
		sdata->debugfs.default_multicast_key =
			debugfs_create_symlink("default_multicast_key",
					       sdata->vif.debugfs_dir, buf);
	}
}

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

	if (!sdata->vif.debugfs_dir)
		return;

	key = key_mtx_dereference(sdata->local,
				  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->vif.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
07caf9d6	18	#define KEY_READ(name, prop, 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	{ \
e9f207f0	23	struct ieee80211_key *key = file->private_data; \
07caf9d6 EP	24	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	25	format_string, key->prop); \
e9f207f0	26	}
07caf9d6 EP	27	#define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
07caf9d6 EP	28	#define KEY_READ_X(name) KEY_READ(name, name, "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, \
234e3405	33	.open = simple_open, \
2b18ab36	34	.llseek = generic_file_llseek, \
e9f207f0 JB	35	}
	36
	37	#define KEY_FILE(name, format) \
	38	KEY_READ_##format(name) \
	39	KEY_OPS(name)
	40
07caf9d6 EP	41	#define KEY_CONF_READ(name, format_string) \
	42	KEY_READ(conf_##name, conf.name, format_string)
	43	#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, "%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, \
234e3405	48	.open = simple_open, \
2b18ab36	49	.llseek = generic_file_llseek, \
8f20fc24 JB	50	}
	51
	52	#define KEY_CONF_FILE(name, format) \
	53	KEY_CONF_READ_##format(name) \
	54	KEY_CONF_OPS(name)
	55
	56	KEY_CONF_FILE(keylen, D);
	57	KEY_CONF_FILE(keyidx, D);
	58	KEY_CONF_FILE(hw_key_idx, D);
11a843b7	59	KEY_FILE(flags, X);
e9f207f0	60	KEY_FILE(tx_rx_count, D);
07caf9d6	61	KEY_READ(ifindex, sdata->name, "%s\n");
e7a64f12	62	KEY_OPS(ifindex);
e9f207f0 JB	63
	64	static ssize_t key_algorithm_read(struct file *file,
	65	char __user *userbuf,
	66	size_t count, loff_t *ppos)
	67	{
97359d12	68	char buf[15];
e9f207f0	69	struct ieee80211_key *key = file->private_data;
97359d12	70	u32 c = key->conf.cipher;
e9f207f0	71
97359d12 JB	72	sprintf(buf, "%.2x-%.2x-%.2x:%d\n",
	73	c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
	74	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
e9f207f0 JB	75	}
	76	KEY_OPS(algorithm);
	77
	78	static ssize_t key_tx_spec_read(struct file file, char __user userbuf,
	79	size_t count, loff_t *ppos)
	80	{
aba83a0b	81	u64 pn;
e9f207f0 JB	82	char buf[20];
	83	int len;
	84	struct ieee80211_key *key = file->private_data;
	85
97359d12 JB	86	switch (key->conf.cipher) {
	87	case WLAN_CIPHER_SUITE_WEP40:
	88	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	89	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	90	break;
97359d12	91	case WLAN_CIPHER_SUITE_TKIP:
e9f207f0	92	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
b0f76b33 HH	93	key->u.tkip.tx.iv32,
b0f76b33 HH	94	key->u.tkip.tx.iv16);
50339a67	95	break;
97359d12	96	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	97	case WLAN_CIPHER_SUITE_CCMP_256:
97359d12	98	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	99	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
8ade538b JM	100	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
8ade538b JM	101	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
00b9cfa3 JM	102	case WLAN_CIPHER_SUITE_GCMP:
00b9cfa3 JM	103	case WLAN_CIPHER_SUITE_GCMP_256:
db388a56	104	pn = atomic64_read(&key->conf.tx_pn);
00b9cfa3 JM	105	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	106	(u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
	107	(u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
	108	break;
e9f207f0 JB	109	default:
	110	return 0;
	111	}
	112	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	113	}
	114	KEY_OPS(tx_spec);
	115
	116	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	117	size_t count, loff_t *ppos)
	118	{
	119	struct ieee80211_key *key = file->private_data;
5a306f58	120	char buf[14IEEE80211_NUM_TIDS+1], p = buf;
e9f207f0 JB	121	int i, len;
	122	const u8 *rpn;
	123
97359d12 JB	124	switch (key->conf.cipher) {
	125	case WLAN_CIPHER_SUITE_WEP40:
	126	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	127	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	128	break;
97359d12	129	case WLAN_CIPHER_SUITE_TKIP:
5a306f58	130	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0 JB	131	p += scnprintf(p, sizeof(buf)+buf-p,
e9f207f0 JB	132	"%08x %04x\n",
b0f76b33 HH	133	key->u.tkip.rx[i].iv32,
b0f76b33 HH	134	key->u.tkip.rx[i].iv16);
e9f207f0	135	len = p - buf;
50339a67	136	break;
97359d12	137	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	138	case WLAN_CIPHER_SUITE_CCMP_256:
5a306f58	139	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
e9f207f0 JB	140	rpn = key->u.ccmp.rx_pn[i];
	141	p += scnprintf(p, sizeof(buf)+buf-p,
	142	"%02x%02x%02x%02x%02x%02x\n",
	143	rpn[0], rpn[1], rpn[2],
	144	rpn[3], rpn[4], rpn[5]);
	145	}
	146	len = p - buf;
50339a67	147	break;
97359d12	148	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	149	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	150	rpn = key->u.aes_cmac.rx_pn;
	151	p += scnprintf(p, sizeof(buf)+buf-p,
	152	"%02x%02x%02x%02x%02x%02x\n",
	153	rpn[0], rpn[1], rpn[2],
	154	rpn[3], rpn[4], rpn[5]);
	155	len = p - buf;
	156	break;
8ade538b JM	157	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	158	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	159	rpn = key->u.aes_gmac.rx_pn;
	160	p += scnprintf(p, sizeof(buf)+buf-p,
	161	"%02x%02x%02x%02x%02x%02x\n",
	162	rpn[0], rpn[1], rpn[2],
	163	rpn[3], rpn[4], rpn[5]);
	164	len = p - buf;
	165	break;
00b9cfa3 JM	166	case WLAN_CIPHER_SUITE_GCMP:
	167	case WLAN_CIPHER_SUITE_GCMP_256:
	168	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
	169	rpn = key->u.gcmp.rx_pn[i];
	170	p += scnprintf(p, sizeof(buf)+buf-p,
	171	"%02x%02x%02x%02x%02x%02x\n",
	172	rpn[0], rpn[1], rpn[2],
	173	rpn[3], rpn[4], rpn[5]);
	174	}
	175	len = p - buf;
	176	break;
e9f207f0 JB	177	default:
	178	return 0;
	179	}
	180	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	181	}
	182	KEY_OPS(rx_spec);
	183
	184	static ssize_t key_replays_read(struct file file, char __user userbuf,
	185	size_t count, loff_t *ppos)
	186	{
	187	struct ieee80211_key *key = file->private_data;
	188	char buf[20];
	189	int len;
	190
97359d12 JB	191	switch (key->conf.cipher) {
97359d12 JB	192	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	193	case WLAN_CIPHER_SUITE_CCMP_256:
3cfcf6ac JM	194	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
3cfcf6ac JM	195	break;
97359d12	196	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	197	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	198	len = scnprintf(buf, sizeof(buf), "%u\n",
	199	key->u.aes_cmac.replays);
	200	break;
8ade538b JM	201	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	202	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	203	len = scnprintf(buf, sizeof(buf), "%u\n",
	204	key->u.aes_gmac.replays);
	205	break;
00b9cfa3 JM	206	case WLAN_CIPHER_SUITE_GCMP:
	207	case WLAN_CIPHER_SUITE_GCMP_256:
	208	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.replays);
	209	break;
3cfcf6ac	210	default:
e9f207f0	211	return 0;
3cfcf6ac	212	}
e9f207f0 JB	213	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	214	}
	215	KEY_OPS(replays);
	216
3cfcf6ac JM	217	static ssize_t key_icverrors_read(struct file file, char __user userbuf,
	218	size_t count, loff_t *ppos)
	219	{
	220	struct ieee80211_key *key = file->private_data;
	221	char buf[20];
	222	int len;
	223
97359d12 JB	224	switch (key->conf.cipher) {
97359d12 JB	225	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	226	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	227	len = scnprintf(buf, sizeof(buf), "%u\n",
	228	key->u.aes_cmac.icverrors);
	229	break;
8ade538b JM	230	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	231	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	232	len = scnprintf(buf, sizeof(buf), "%u\n",
	233	key->u.aes_gmac.icverrors);
	234	break;
3cfcf6ac JM	235	default:
	236	return 0;
	237	}
	238	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	239	}
	240	KEY_OPS(icverrors);
	241
b98ea058 S	242	static ssize_t key_mic_failures_read(struct file file, char __user userbuf,
	243	size_t count, loff_t *ppos)
	244	{
	245	struct ieee80211_key *key = file->private_data;
	246	char buf[20];
	247	int len;
	248
	249	if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP)
	250	return -EINVAL;
	251
	252	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);
	253
	254	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	255	}
	256	KEY_OPS(mic_failures);
	257
e9f207f0 JB	258	static ssize_t key_key_read(struct file file, char __user userbuf,
	259	size_t count, loff_t *ppos)
	260	{
	261	struct ieee80211_key *key = file->private_data;
520efd1a	262	int i, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	263	char *buf = kmalloc(bufsize, GFP_KERNEL);
e9f207f0 JB	264	char *p = buf;
520efd1a JJ	265	ssize_t res;
	266
	267	if (!buf)
	268	return -ENOMEM;
e9f207f0	269
8f20fc24 JB	270	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	271	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	272	p += scnprintf(p, bufsize+buf-p, "\n");
	273	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	274	kfree(buf);
	275	return res;
	276	}
	277	KEY_OPS(key);
	278
	279	#define DEBUGFS_ADD(name) \
7bcfaf2f JB	280	debugfs_create_file(#name, 0400, key->debugfs.dir, \
7bcfaf2f JB	281	key, &key_##name##_ops);
e9f207f0	282
3b96766f	283	void ieee80211_debugfs_key_add(struct ieee80211_key *key)
9446f3ef	284	{
50339a67	285	static int keycount;
9446f3ef	286	char buf[100];
3b96766f	287	struct sta_info *sta;
e9f207f0	288
3b96766f	289	if (!key->local->debugfs.keys)
e9f207f0 JB	290	return;
e9f207f0 JB	291
50339a67	292	sprintf(buf, "%d", keycount);
d9c58f30	293	key->debugfs.cnt = keycount;
50339a67	294	keycount++;
e9f207f0	295	key->debugfs.dir = debugfs_create_dir(buf,
3b96766f	296	key->local->debugfs.keys);
e9f207f0 JB	297
	298	if (!key->debugfs.dir)
	299	return;
	300
40b275b6 JB	301	sta = key->sta;
40b275b6 JB	302	if (sta) {
9446f3ef JB	303	sprintf(buf, "../../netdev:%s/stations/%pM",
9446f3ef JB	304	sta->sdata->name, sta->sta.addr);
3b96766f JB	305	key->debugfs.stalink =
3b96766f JB	306	debugfs_create_symlink("station", key->debugfs.dir, buf);
40b275b6	307	}
3b96766f	308
e9f207f0	309	DEBUGFS_ADD(keylen);
8f20fc24	310	DEBUGFS_ADD(flags);
e9f207f0 JB	311	DEBUGFS_ADD(keyidx);
	312	DEBUGFS_ADD(hw_key_idx);
	313	DEBUGFS_ADD(tx_rx_count);
	314	DEBUGFS_ADD(algorithm);
	315	DEBUGFS_ADD(tx_spec);
	316	DEBUGFS_ADD(rx_spec);
	317	DEBUGFS_ADD(replays);
3cfcf6ac	318	DEBUGFS_ADD(icverrors);
b98ea058	319	DEBUGFS_ADD(mic_failures);
e9f207f0	320	DEBUGFS_ADD(key);
e7a64f12	321	DEBUGFS_ADD(ifindex);
e9f207f0 JB	322	};
e9f207f0 JB	323
e9f207f0 JB	324	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	325	{
	326	if (!key)
	327	return;
	328
7bcfaf2f	329	debugfs_remove_recursive(key->debugfs.dir);
e9f207f0 JB	330	key->debugfs.dir = NULL;
e9f207f0 JB	331	}
f7e0104c JB	332
f7e0104c JB	333	void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata)
e9f207f0 JB	334	{
e9f207f0 JB	335	char buf[50];
78520cad	336	struct ieee80211_key *key;
e9f207f0	337
ddbfe860	338	if (!sdata->vif.debugfs_dir)
e9f207f0 JB	339	return;
e9f207f0 JB	340
f7e0104c	341	lockdep_assert_held(&sdata->local->key_mtx);
78520cad	342
5c6761ad FF	343	debugfs_remove(sdata->debugfs.default_unicast_key);
5c6761ad FF	344	sdata->debugfs.default_unicast_key = NULL;
135792ec	345
f7e0104c	346	if (sdata->default_unicast_key) {
40b275b6 JB	347	key = key_mtx_dereference(sdata->local,
40b275b6 JB	348	sdata->default_unicast_key);
78520cad	349	sprintf(buf, "../keys/%d", key->debugfs.cnt);
f7e0104c JB	350	sdata->debugfs.default_unicast_key =
f7e0104c JB	351	debugfs_create_symlink("default_unicast_key",
ddbfe860	352	sdata->vif.debugfs_dir, buf);
135792ec JB	353	}
135792ec JB	354
5c6761ad FF	355	debugfs_remove(sdata->debugfs.default_multicast_key);
5c6761ad FF	356	sdata->debugfs.default_multicast_key = NULL;
e9f207f0	357
f7e0104c	358	if (sdata->default_multicast_key) {
40b275b6 JB	359	key = key_mtx_dereference(sdata->local,
40b275b6 JB	360	sdata->default_multicast_key);
f7e0104c JB	361	sprintf(buf, "../keys/%d", key->debugfs.cnt);
	362	sdata->debugfs.default_multicast_key =
	363	debugfs_create_symlink("default_multicast_key",
ddbfe860	364	sdata->vif.debugfs_dir, buf);
f7e0104c	365	}
e9f207f0	366	}
e9f207f0	367
3cfcf6ac JM	368	void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
	369	{
	370	char buf[50];
	371	struct ieee80211_key *key;
	372
ddbfe860	373	if (!sdata->vif.debugfs_dir)
3cfcf6ac JM	374	return;
3cfcf6ac JM	375
40b275b6 JB	376	key = key_mtx_dereference(sdata->local,
40b275b6 JB	377	sdata->default_mgmt_key);
3cfcf6ac JM	378	if (key) {
3cfcf6ac JM	379	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	380	sdata->debugfs.default_mgmt_key =
3cfcf6ac	381	debugfs_create_symlink("default_mgmt_key",
ddbfe860	382	sdata->vif.debugfs_dir, buf);
3cfcf6ac JM	383	} else
	384	ieee80211_debugfs_key_remove_mgmt_default(sdata);
	385	}
	386
	387	void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
	388	{
	389	if (!sdata)
	390	return;
	391
7bcfaf2f JB	392	debugfs_remove(sdata->debugfs.default_mgmt_key);
7bcfaf2f JB	393	sdata->debugfs.default_mgmt_key = NULL;
3cfcf6ac JM	394	}
3cfcf6ac JM	395
e9f207f0 JB	396	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	397	struct sta_info *sta)
	398	{
	399	debugfs_remove(key->debugfs.stalink);
	400	key->debugfs.stalink = NULL;
	401	}