[thirdparty/kernel/stable.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>
 * Copyright (C) 2015	Intel Deutschland GmbH
 *
 * 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_OPS_W(name)							\
static const struct file_operations key_ ##name## _ops = {		\
	.read = key_##name##_read,					\
	.write = key_##name##_write,					\
	.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_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_write(struct file *file, const char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	struct ieee80211_key *key = file->private_data;
	u64 pn;
	int ret;

	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		return -EINVAL;
	case WLAN_CIPHER_SUITE_TKIP:
		/* not supported yet */
		return -EOPNOTSUPP;
	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:
		ret = kstrtou64_from_user(userbuf, count, 16, &pn);
		if (ret)
			return ret;
		/* PN is a 48-bit counter */
		if (pn >= (1ULL << 48))
			return -ERANGE;
		atomic64_set(&key->conf.tx_pn, pn);
		return count;
	default:
		return 0;
	}
}

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:
		pn = atomic64_read(&key->conf.tx_pn);
		len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
				TKIP_PN_TO_IV32(pn),
				TKIP_PN_TO_IV16(pn));
		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_W(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);
#define DEBUGFS_ADD_W(name) \
	debugfs_create_file(#name, 0600, 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(algorithm);
	DEBUGFS_ADD_W(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>
d0a77c65	5	* Copyright (C) 2015 Intel Deutschland GmbH
e9f207f0 JB	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/kobject.h>
5a0e3ad6	13	#include <linux/slab.h>
e9f207f0	14	#include "ieee80211_i.h"
2c8dccc7	15	#include "key.h"
e9f207f0 JB	16	#include "debugfs.h"
	17	#include "debugfs_key.h"
	18
07caf9d6	19	#define KEY_READ(name, prop, format_string) \
e9f207f0 JB	20	static ssize_t key_##name##_read(struct file *file, \
	21	char __user *userbuf, \
	22	size_t count, loff_t *ppos) \
	23	{ \
e9f207f0	24	struct ieee80211_key *key = file->private_data; \
07caf9d6 EP	25	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	26	format_string, key->prop); \
e9f207f0	27	}
07caf9d6 EP	28	#define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
07caf9d6 EP	29	#define KEY_READ_X(name) KEY_READ(name, name, "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, \
234e3405	34	.open = simple_open, \
2b18ab36	35	.llseek = generic_file_llseek, \
e9f207f0 JB	36	}
e9f207f0 JB	37
d0a77c65 JB	38	#define KEY_OPS_W(name) \
	39	static const struct file_operations key_ ##name## _ops = { \
	40	.read = key_##name##_read, \
	41	.write = key_##name##_write, \
	42	.open = simple_open, \
	43	.llseek = generic_file_llseek, \
	44	}
	45
e9f207f0 JB	46	#define KEY_FILE(name, format) \
	47	KEY_READ_##format(name) \
	48	KEY_OPS(name)
	49
07caf9d6 EP	50	#define KEY_CONF_READ(name, format_string) \
	51	KEY_READ(conf_##name, conf.name, format_string)
	52	#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, "%d\n")
8f20fc24 JB	53
	54	#define KEY_CONF_OPS(name) \
	55	static const struct file_operations key_ ##name## _ops = { \
	56	.read = key_conf_##name##_read, \
234e3405	57	.open = simple_open, \
2b18ab36	58	.llseek = generic_file_llseek, \
8f20fc24 JB	59	}
	60
	61	#define KEY_CONF_FILE(name, format) \
	62	KEY_CONF_READ_##format(name) \
	63	KEY_CONF_OPS(name)
	64
	65	KEY_CONF_FILE(keylen, D);
	66	KEY_CONF_FILE(keyidx, D);
	67	KEY_CONF_FILE(hw_key_idx, D);
11a843b7	68	KEY_FILE(flags, X);
07caf9d6	69	KEY_READ(ifindex, sdata->name, "%s\n");
e7a64f12	70	KEY_OPS(ifindex);
e9f207f0 JB	71
	72	static ssize_t key_algorithm_read(struct file *file,
	73	char __user *userbuf,
	74	size_t count, loff_t *ppos)
	75	{
97359d12	76	char buf[15];
e9f207f0	77	struct ieee80211_key *key = file->private_data;
97359d12	78	u32 c = key->conf.cipher;
e9f207f0	79
97359d12 JB	80	sprintf(buf, "%.2x-%.2x-%.2x:%d\n",
	81	c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
	82	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
e9f207f0 JB	83	}
	84	KEY_OPS(algorithm);
	85
d0a77c65 JB	86	static ssize_t key_tx_spec_write(struct file file, const char __user userbuf,
	87	size_t count, loff_t *ppos)
	88	{
	89	struct ieee80211_key *key = file->private_data;
	90	u64 pn;
	91	int ret;
	92
	93	switch (key->conf.cipher) {
	94	case WLAN_CIPHER_SUITE_WEP40:
	95	case WLAN_CIPHER_SUITE_WEP104:
	96	return -EINVAL;
	97	case WLAN_CIPHER_SUITE_TKIP:
	98	/* not supported yet */
	99	return -EOPNOTSUPP;
	100	case WLAN_CIPHER_SUITE_CCMP:
	101	case WLAN_CIPHER_SUITE_CCMP_256:
	102	case WLAN_CIPHER_SUITE_AES_CMAC:
	103	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
	104	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	105	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	106	case WLAN_CIPHER_SUITE_GCMP:
	107	case WLAN_CIPHER_SUITE_GCMP_256:
	108	ret = kstrtou64_from_user(userbuf, count, 16, &pn);
	109	if (ret)
	110	return ret;
	111	/* PN is a 48-bit counter */
	112	if (pn >= (1ULL << 48))
	113	return -ERANGE;
	114	atomic64_set(&key->conf.tx_pn, pn);
	115	return count;
	116	default:
	117	return 0;
	118	}
	119	}
	120
e9f207f0 JB	121	static ssize_t key_tx_spec_read(struct file file, char __user userbuf,
	122	size_t count, loff_t *ppos)
	123	{
aba83a0b	124	u64 pn;
e9f207f0 JB	125	char buf[20];
	126	int len;
	127	struct ieee80211_key *key = file->private_data;
	128
97359d12 JB	129	switch (key->conf.cipher) {
	130	case WLAN_CIPHER_SUITE_WEP40:
	131	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	132	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	133	break;
97359d12	134	case WLAN_CIPHER_SUITE_TKIP:
f8079d43	135	pn = atomic64_read(&key->conf.tx_pn);
e9f207f0	136	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
f8079d43 EP	137	TKIP_PN_TO_IV32(pn),
f8079d43 EP	138	TKIP_PN_TO_IV16(pn));
50339a67	139	break;
97359d12	140	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	141	case WLAN_CIPHER_SUITE_CCMP_256:
97359d12	142	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	143	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
8ade538b JM	144	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
8ade538b JM	145	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
00b9cfa3 JM	146	case WLAN_CIPHER_SUITE_GCMP:
00b9cfa3 JM	147	case WLAN_CIPHER_SUITE_GCMP_256:
db388a56	148	pn = atomic64_read(&key->conf.tx_pn);
00b9cfa3 JM	149	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	150	(u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
	151	(u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
	152	break;
e9f207f0 JB	153	default:
	154	return 0;
	155	}
	156	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	157	}
d0a77c65	158	KEY_OPS_W(tx_spec);
e9f207f0 JB	159
	160	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	161	size_t count, loff_t *ppos)
	162	{
	163	struct ieee80211_key *key = file->private_data;
5a306f58	164	char buf[14IEEE80211_NUM_TIDS+1], p = buf;
e9f207f0 JB	165	int i, len;
	166	const u8 *rpn;
	167
97359d12 JB	168	switch (key->conf.cipher) {
	169	case WLAN_CIPHER_SUITE_WEP40:
	170	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	171	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	172	break;
97359d12	173	case WLAN_CIPHER_SUITE_TKIP:
5a306f58	174	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0 JB	175	p += scnprintf(p, sizeof(buf)+buf-p,
e9f207f0 JB	176	"%08x %04x\n",
b0f76b33 HH	177	key->u.tkip.rx[i].iv32,
b0f76b33 HH	178	key->u.tkip.rx[i].iv16);
e9f207f0	179	len = p - buf;
50339a67	180	break;
97359d12	181	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	182	case WLAN_CIPHER_SUITE_CCMP_256:
5a306f58	183	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
e9f207f0 JB	184	rpn = key->u.ccmp.rx_pn[i];
	185	p += scnprintf(p, sizeof(buf)+buf-p,
	186	"%02x%02x%02x%02x%02x%02x\n",
	187	rpn[0], rpn[1], rpn[2],
	188	rpn[3], rpn[4], rpn[5]);
	189	}
	190	len = p - buf;
50339a67	191	break;
97359d12	192	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	193	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	194	rpn = key->u.aes_cmac.rx_pn;
	195	p += scnprintf(p, sizeof(buf)+buf-p,
	196	"%02x%02x%02x%02x%02x%02x\n",
	197	rpn[0], rpn[1], rpn[2],
	198	rpn[3], rpn[4], rpn[5]);
	199	len = p - buf;
	200	break;
8ade538b JM	201	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	202	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	203	rpn = key->u.aes_gmac.rx_pn;
	204	p += scnprintf(p, sizeof(buf)+buf-p,
	205	"%02x%02x%02x%02x%02x%02x\n",
	206	rpn[0], rpn[1], rpn[2],
	207	rpn[3], rpn[4], rpn[5]);
	208	len = p - buf;
	209	break;
00b9cfa3 JM	210	case WLAN_CIPHER_SUITE_GCMP:
	211	case WLAN_CIPHER_SUITE_GCMP_256:
	212	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
	213	rpn = key->u.gcmp.rx_pn[i];
	214	p += scnprintf(p, sizeof(buf)+buf-p,
	215	"%02x%02x%02x%02x%02x%02x\n",
	216	rpn[0], rpn[1], rpn[2],
	217	rpn[3], rpn[4], rpn[5]);
	218	}
	219	len = p - buf;
	220	break;
e9f207f0 JB	221	default:
	222	return 0;
	223	}
	224	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	225	}
	226	KEY_OPS(rx_spec);
	227
	228	static ssize_t key_replays_read(struct file file, char __user userbuf,
	229	size_t count, loff_t *ppos)
	230	{
	231	struct ieee80211_key *key = file->private_data;
	232	char buf[20];
	233	int len;
	234
97359d12 JB	235	switch (key->conf.cipher) {
97359d12 JB	236	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	237	case WLAN_CIPHER_SUITE_CCMP_256:
3cfcf6ac JM	238	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
3cfcf6ac JM	239	break;
97359d12	240	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	241	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	242	len = scnprintf(buf, sizeof(buf), "%u\n",
	243	key->u.aes_cmac.replays);
	244	break;
8ade538b JM	245	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	246	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	247	len = scnprintf(buf, sizeof(buf), "%u\n",
	248	key->u.aes_gmac.replays);
	249	break;
00b9cfa3 JM	250	case WLAN_CIPHER_SUITE_GCMP:
	251	case WLAN_CIPHER_SUITE_GCMP_256:
	252	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.replays);
	253	break;
3cfcf6ac	254	default:
e9f207f0	255	return 0;
3cfcf6ac	256	}
e9f207f0 JB	257	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	258	}
	259	KEY_OPS(replays);
	260
3cfcf6ac JM	261	static ssize_t key_icverrors_read(struct file file, char __user userbuf,
	262	size_t count, loff_t *ppos)
	263	{
	264	struct ieee80211_key *key = file->private_data;
	265	char buf[20];
	266	int len;
	267
97359d12 JB	268	switch (key->conf.cipher) {
97359d12 JB	269	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	270	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	271	len = scnprintf(buf, sizeof(buf), "%u\n",
	272	key->u.aes_cmac.icverrors);
	273	break;
8ade538b JM	274	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	275	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	276	len = scnprintf(buf, sizeof(buf), "%u\n",
	277	key->u.aes_gmac.icverrors);
	278	break;
3cfcf6ac JM	279	default:
	280	return 0;
	281	}
	282	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	283	}
	284	KEY_OPS(icverrors);
	285
b98ea058 S	286	static ssize_t key_mic_failures_read(struct file file, char __user userbuf,
	287	size_t count, loff_t *ppos)
	288	{
	289	struct ieee80211_key *key = file->private_data;
	290	char buf[20];
	291	int len;
	292
	293	if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP)
	294	return -EINVAL;
	295
	296	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);
	297
	298	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	299	}
	300	KEY_OPS(mic_failures);
	301
e9f207f0 JB	302	static ssize_t key_key_read(struct file file, char __user userbuf,
	303	size_t count, loff_t *ppos)
	304	{
	305	struct ieee80211_key *key = file->private_data;
520efd1a	306	int i, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	307	char *buf = kmalloc(bufsize, GFP_KERNEL);
e9f207f0 JB	308	char *p = buf;
520efd1a JJ	309	ssize_t res;
	310
	311	if (!buf)
	312	return -ENOMEM;
e9f207f0	313
8f20fc24 JB	314	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	315	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	316	p += scnprintf(p, bufsize+buf-p, "\n");
	317	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	318	kfree(buf);
	319	return res;
	320	}
	321	KEY_OPS(key);
	322
	323	#define DEBUGFS_ADD(name) \
7bcfaf2f JB	324	debugfs_create_file(#name, 0400, key->debugfs.dir, \
7bcfaf2f JB	325	key, &key_##name##_ops);
d0a77c65 JB	326	#define DEBUGFS_ADD_W(name) \
	327	debugfs_create_file(#name, 0600, key->debugfs.dir, \
	328	key, &key_##name##_ops);
e9f207f0	329
3b96766f	330	void ieee80211_debugfs_key_add(struct ieee80211_key *key)
9446f3ef	331	{
50339a67	332	static int keycount;
9446f3ef	333	char buf[100];
3b96766f	334	struct sta_info *sta;
e9f207f0	335
3b96766f	336	if (!key->local->debugfs.keys)
e9f207f0 JB	337	return;
e9f207f0 JB	338
50339a67	339	sprintf(buf, "%d", keycount);
d9c58f30	340	key->debugfs.cnt = keycount;
50339a67	341	keycount++;
e9f207f0	342	key->debugfs.dir = debugfs_create_dir(buf,
3b96766f	343	key->local->debugfs.keys);
e9f207f0 JB	344
	345	if (!key->debugfs.dir)
	346	return;
	347
40b275b6 JB	348	sta = key->sta;
40b275b6 JB	349	if (sta) {
9446f3ef JB	350	sprintf(buf, "../../netdev:%s/stations/%pM",
9446f3ef JB	351	sta->sdata->name, sta->sta.addr);
3b96766f JB	352	key->debugfs.stalink =
3b96766f JB	353	debugfs_create_symlink("station", key->debugfs.dir, buf);
40b275b6	354	}
3b96766f	355
e9f207f0	356	DEBUGFS_ADD(keylen);
8f20fc24	357	DEBUGFS_ADD(flags);
e9f207f0 JB	358	DEBUGFS_ADD(keyidx);
e9f207f0 JB	359	DEBUGFS_ADD(hw_key_idx);
e9f207f0	360	DEBUGFS_ADD(algorithm);
d0a77c65	361	DEBUGFS_ADD_W(tx_spec);
e9f207f0 JB	362	DEBUGFS_ADD(rx_spec);
e9f207f0 JB	363	DEBUGFS_ADD(replays);
3cfcf6ac	364	DEBUGFS_ADD(icverrors);
b98ea058	365	DEBUGFS_ADD(mic_failures);
e9f207f0	366	DEBUGFS_ADD(key);
e7a64f12	367	DEBUGFS_ADD(ifindex);
e9f207f0 JB	368	};
e9f207f0 JB	369
e9f207f0 JB	370	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	371	{
	372	if (!key)
	373	return;
	374
7bcfaf2f	375	debugfs_remove_recursive(key->debugfs.dir);
e9f207f0 JB	376	key->debugfs.dir = NULL;
e9f207f0 JB	377	}
f7e0104c JB	378
f7e0104c JB	379	void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata)
e9f207f0 JB	380	{
e9f207f0 JB	381	char buf[50];
78520cad	382	struct ieee80211_key *key;
e9f207f0	383
ddbfe860	384	if (!sdata->vif.debugfs_dir)
e9f207f0 JB	385	return;
e9f207f0 JB	386
f7e0104c	387	lockdep_assert_held(&sdata->local->key_mtx);
78520cad	388
5c6761ad FF	389	debugfs_remove(sdata->debugfs.default_unicast_key);
5c6761ad FF	390	sdata->debugfs.default_unicast_key = NULL;
135792ec	391
f7e0104c	392	if (sdata->default_unicast_key) {
40b275b6 JB	393	key = key_mtx_dereference(sdata->local,
40b275b6 JB	394	sdata->default_unicast_key);
78520cad	395	sprintf(buf, "../keys/%d", key->debugfs.cnt);
f7e0104c JB	396	sdata->debugfs.default_unicast_key =
f7e0104c JB	397	debugfs_create_symlink("default_unicast_key",
ddbfe860	398	sdata->vif.debugfs_dir, buf);
135792ec JB	399	}
135792ec JB	400
5c6761ad FF	401	debugfs_remove(sdata->debugfs.default_multicast_key);
5c6761ad FF	402	sdata->debugfs.default_multicast_key = NULL;
e9f207f0	403
f7e0104c	404	if (sdata->default_multicast_key) {
40b275b6 JB	405	key = key_mtx_dereference(sdata->local,
40b275b6 JB	406	sdata->default_multicast_key);
f7e0104c JB	407	sprintf(buf, "../keys/%d", key->debugfs.cnt);
	408	sdata->debugfs.default_multicast_key =
	409	debugfs_create_symlink("default_multicast_key",
ddbfe860	410	sdata->vif.debugfs_dir, buf);
f7e0104c	411	}
e9f207f0	412	}
e9f207f0	413
3cfcf6ac JM	414	void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
	415	{
	416	char buf[50];
	417	struct ieee80211_key *key;
	418
ddbfe860	419	if (!sdata->vif.debugfs_dir)
3cfcf6ac JM	420	return;
3cfcf6ac JM	421
40b275b6 JB	422	key = key_mtx_dereference(sdata->local,
40b275b6 JB	423	sdata->default_mgmt_key);
3cfcf6ac JM	424	if (key) {
3cfcf6ac JM	425	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	426	sdata->debugfs.default_mgmt_key =
3cfcf6ac	427	debugfs_create_symlink("default_mgmt_key",
ddbfe860	428	sdata->vif.debugfs_dir, buf);
3cfcf6ac JM	429	} else
	430	ieee80211_debugfs_key_remove_mgmt_default(sdata);
	431	}
	432
	433	void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
	434	{
	435	if (!sdata)
	436	return;
	437
7bcfaf2f JB	438	debugfs_remove(sdata->debugfs.default_mgmt_key);
7bcfaf2f JB	439	sdata->debugfs.default_mgmt_key = NULL;
3cfcf6ac JM	440	}
3cfcf6ac JM	441
e9f207f0 JB	442	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	443	struct sta_info *sta)
	444	{
	445	debugfs_remove(key->debugfs.stalink);
	446	key->debugfs.stalink = NULL;
	447	}