[mirror_ubuntu-zesty-kernel.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:
		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_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:
e9f207f0	135	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
b0f76b33 HH	136	key->u.tkip.tx.iv32,
b0f76b33 HH	137	key->u.tkip.tx.iv16);
50339a67	138	break;
97359d12	139	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	140	case WLAN_CIPHER_SUITE_CCMP_256:
97359d12	141	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	142	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
8ade538b JM	143	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
8ade538b JM	144	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
00b9cfa3 JM	145	case WLAN_CIPHER_SUITE_GCMP:
00b9cfa3 JM	146	case WLAN_CIPHER_SUITE_GCMP_256:
db388a56	147	pn = atomic64_read(&key->conf.tx_pn);
00b9cfa3 JM	148	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	149	(u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
	150	(u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
	151	break;
e9f207f0 JB	152	default:
	153	return 0;
	154	}
	155	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	156	}
d0a77c65	157	KEY_OPS_W(tx_spec);
e9f207f0 JB	158
	159	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	160	size_t count, loff_t *ppos)
	161	{
	162	struct ieee80211_key *key = file->private_data;
5a306f58	163	char buf[14IEEE80211_NUM_TIDS+1], p = buf;
e9f207f0 JB	164	int i, len;
	165	const u8 *rpn;
	166
97359d12 JB	167	switch (key->conf.cipher) {
	168	case WLAN_CIPHER_SUITE_WEP40:
	169	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	170	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	171	break;
97359d12	172	case WLAN_CIPHER_SUITE_TKIP:
5a306f58	173	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0 JB	174	p += scnprintf(p, sizeof(buf)+buf-p,
e9f207f0 JB	175	"%08x %04x\n",
b0f76b33 HH	176	key->u.tkip.rx[i].iv32,
b0f76b33 HH	177	key->u.tkip.rx[i].iv16);
e9f207f0	178	len = p - buf;
50339a67	179	break;
97359d12	180	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	181	case WLAN_CIPHER_SUITE_CCMP_256:
5a306f58	182	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
e9f207f0 JB	183	rpn = key->u.ccmp.rx_pn[i];
	184	p += scnprintf(p, sizeof(buf)+buf-p,
	185	"%02x%02x%02x%02x%02x%02x\n",
	186	rpn[0], rpn[1], rpn[2],
	187	rpn[3], rpn[4], rpn[5]);
	188	}
	189	len = p - buf;
50339a67	190	break;
97359d12	191	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	192	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	193	rpn = key->u.aes_cmac.rx_pn;
	194	p += scnprintf(p, sizeof(buf)+buf-p,
	195	"%02x%02x%02x%02x%02x%02x\n",
	196	rpn[0], rpn[1], rpn[2],
	197	rpn[3], rpn[4], rpn[5]);
	198	len = p - buf;
	199	break;
8ade538b JM	200	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	201	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	202	rpn = key->u.aes_gmac.rx_pn;
	203	p += scnprintf(p, sizeof(buf)+buf-p,
	204	"%02x%02x%02x%02x%02x%02x\n",
	205	rpn[0], rpn[1], rpn[2],
	206	rpn[3], rpn[4], rpn[5]);
	207	len = p - buf;
	208	break;
00b9cfa3 JM	209	case WLAN_CIPHER_SUITE_GCMP:
	210	case WLAN_CIPHER_SUITE_GCMP_256:
	211	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
	212	rpn = key->u.gcmp.rx_pn[i];
	213	p += scnprintf(p, sizeof(buf)+buf-p,
	214	"%02x%02x%02x%02x%02x%02x\n",
	215	rpn[0], rpn[1], rpn[2],
	216	rpn[3], rpn[4], rpn[5]);
	217	}
	218	len = p - buf;
	219	break;
e9f207f0 JB	220	default:
	221	return 0;
	222	}
	223	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	224	}
	225	KEY_OPS(rx_spec);
	226
	227	static ssize_t key_replays_read(struct file file, char __user userbuf,
	228	size_t count, loff_t *ppos)
	229	{
	230	struct ieee80211_key *key = file->private_data;
	231	char buf[20];
	232	int len;
	233
97359d12 JB	234	switch (key->conf.cipher) {
97359d12 JB	235	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	236	case WLAN_CIPHER_SUITE_CCMP_256:
3cfcf6ac JM	237	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
3cfcf6ac JM	238	break;
97359d12	239	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	240	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	241	len = scnprintf(buf, sizeof(buf), "%u\n",
	242	key->u.aes_cmac.replays);
	243	break;
8ade538b JM	244	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	245	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	246	len = scnprintf(buf, sizeof(buf), "%u\n",
	247	key->u.aes_gmac.replays);
	248	break;
00b9cfa3 JM	249	case WLAN_CIPHER_SUITE_GCMP:
	250	case WLAN_CIPHER_SUITE_GCMP_256:
	251	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.replays);
	252	break;
3cfcf6ac	253	default:
e9f207f0	254	return 0;
3cfcf6ac	255	}
e9f207f0 JB	256	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	257	}
	258	KEY_OPS(replays);
	259
3cfcf6ac JM	260	static ssize_t key_icverrors_read(struct file file, char __user userbuf,
	261	size_t count, loff_t *ppos)
	262	{
	263	struct ieee80211_key *key = file->private_data;
	264	char buf[20];
	265	int len;
	266
97359d12 JB	267	switch (key->conf.cipher) {
97359d12 JB	268	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	269	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	270	len = scnprintf(buf, sizeof(buf), "%u\n",
	271	key->u.aes_cmac.icverrors);
	272	break;
8ade538b JM	273	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	274	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	275	len = scnprintf(buf, sizeof(buf), "%u\n",
	276	key->u.aes_gmac.icverrors);
	277	break;
3cfcf6ac JM	278	default:
	279	return 0;
	280	}
	281	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	282	}
	283	KEY_OPS(icverrors);
	284
b98ea058 S	285	static ssize_t key_mic_failures_read(struct file file, char __user userbuf,
	286	size_t count, loff_t *ppos)
	287	{
	288	struct ieee80211_key *key = file->private_data;
	289	char buf[20];
	290	int len;
	291
	292	if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP)
	293	return -EINVAL;
	294
	295	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);
	296
	297	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	298	}
	299	KEY_OPS(mic_failures);
	300
e9f207f0 JB	301	static ssize_t key_key_read(struct file file, char __user userbuf,
	302	size_t count, loff_t *ppos)
	303	{
	304	struct ieee80211_key *key = file->private_data;
520efd1a	305	int i, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	306	char *buf = kmalloc(bufsize, GFP_KERNEL);
e9f207f0 JB	307	char *p = buf;
520efd1a JJ	308	ssize_t res;
	309
	310	if (!buf)
	311	return -ENOMEM;
e9f207f0	312
8f20fc24 JB	313	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	314	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	315	p += scnprintf(p, bufsize+buf-p, "\n");
	316	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	317	kfree(buf);
	318	return res;
	319	}
	320	KEY_OPS(key);
	321
	322	#define DEBUGFS_ADD(name) \
7bcfaf2f JB	323	debugfs_create_file(#name, 0400, key->debugfs.dir, \
7bcfaf2f JB	324	key, &key_##name##_ops);
d0a77c65 JB	325	#define DEBUGFS_ADD_W(name) \
	326	debugfs_create_file(#name, 0600, key->debugfs.dir, \
	327	key, &key_##name##_ops);
e9f207f0	328
3b96766f	329	void ieee80211_debugfs_key_add(struct ieee80211_key *key)
9446f3ef	330	{
50339a67	331	static int keycount;
9446f3ef	332	char buf[100];
3b96766f	333	struct sta_info *sta;
e9f207f0	334
3b96766f	335	if (!key->local->debugfs.keys)
e9f207f0 JB	336	return;
e9f207f0 JB	337
50339a67	338	sprintf(buf, "%d", keycount);
d9c58f30	339	key->debugfs.cnt = keycount;
50339a67	340	keycount++;
e9f207f0	341	key->debugfs.dir = debugfs_create_dir(buf,
3b96766f	342	key->local->debugfs.keys);
e9f207f0 JB	343
	344	if (!key->debugfs.dir)
	345	return;
	346
40b275b6 JB	347	sta = key->sta;
40b275b6 JB	348	if (sta) {
9446f3ef JB	349	sprintf(buf, "../../netdev:%s/stations/%pM",
9446f3ef JB	350	sta->sdata->name, sta->sta.addr);
3b96766f JB	351	key->debugfs.stalink =
3b96766f JB	352	debugfs_create_symlink("station", key->debugfs.dir, buf);
40b275b6	353	}
3b96766f	354
e9f207f0	355	DEBUGFS_ADD(keylen);
8f20fc24	356	DEBUGFS_ADD(flags);
e9f207f0 JB	357	DEBUGFS_ADD(keyidx);
e9f207f0 JB	358	DEBUGFS_ADD(hw_key_idx);
e9f207f0	359	DEBUGFS_ADD(algorithm);
d0a77c65	360	DEBUGFS_ADD_W(tx_spec);
e9f207f0 JB	361	DEBUGFS_ADD(rx_spec);
e9f207f0 JB	362	DEBUGFS_ADD(replays);
3cfcf6ac	363	DEBUGFS_ADD(icverrors);
b98ea058	364	DEBUGFS_ADD(mic_failures);
e9f207f0	365	DEBUGFS_ADD(key);
e7a64f12	366	DEBUGFS_ADD(ifindex);
e9f207f0 JB	367	};
e9f207f0 JB	368
e9f207f0 JB	369	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	370	{
	371	if (!key)
	372	return;
	373
7bcfaf2f	374	debugfs_remove_recursive(key->debugfs.dir);
e9f207f0 JB	375	key->debugfs.dir = NULL;
e9f207f0 JB	376	}
f7e0104c JB	377
f7e0104c JB	378	void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata)
e9f207f0 JB	379	{
e9f207f0 JB	380	char buf[50];
78520cad	381	struct ieee80211_key *key;
e9f207f0	382
ddbfe860	383	if (!sdata->vif.debugfs_dir)
e9f207f0 JB	384	return;
e9f207f0 JB	385
f7e0104c	386	lockdep_assert_held(&sdata->local->key_mtx);
78520cad	387
5c6761ad FF	388	debugfs_remove(sdata->debugfs.default_unicast_key);
5c6761ad FF	389	sdata->debugfs.default_unicast_key = NULL;
135792ec	390
f7e0104c	391	if (sdata->default_unicast_key) {
40b275b6 JB	392	key = key_mtx_dereference(sdata->local,
40b275b6 JB	393	sdata->default_unicast_key);
78520cad	394	sprintf(buf, "../keys/%d", key->debugfs.cnt);
f7e0104c JB	395	sdata->debugfs.default_unicast_key =
f7e0104c JB	396	debugfs_create_symlink("default_unicast_key",
ddbfe860	397	sdata->vif.debugfs_dir, buf);
135792ec JB	398	}
135792ec JB	399
5c6761ad FF	400	debugfs_remove(sdata->debugfs.default_multicast_key);
5c6761ad FF	401	sdata->debugfs.default_multicast_key = NULL;
e9f207f0	402
f7e0104c	403	if (sdata->default_multicast_key) {
40b275b6 JB	404	key = key_mtx_dereference(sdata->local,
40b275b6 JB	405	sdata->default_multicast_key);
f7e0104c JB	406	sprintf(buf, "../keys/%d", key->debugfs.cnt);
	407	sdata->debugfs.default_multicast_key =
	408	debugfs_create_symlink("default_multicast_key",
ddbfe860	409	sdata->vif.debugfs_dir, buf);
f7e0104c	410	}
e9f207f0	411	}
e9f207f0	412
3cfcf6ac JM	413	void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
	414	{
	415	char buf[50];
	416	struct ieee80211_key *key;
	417
ddbfe860	418	if (!sdata->vif.debugfs_dir)
3cfcf6ac JM	419	return;
3cfcf6ac JM	420
40b275b6 JB	421	key = key_mtx_dereference(sdata->local,
40b275b6 JB	422	sdata->default_mgmt_key);
3cfcf6ac JM	423	if (key) {
3cfcf6ac JM	424	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	425	sdata->debugfs.default_mgmt_key =
3cfcf6ac	426	debugfs_create_symlink("default_mgmt_key",
ddbfe860	427	sdata->vif.debugfs_dir, buf);
3cfcf6ac JM	428	} else
	429	ieee80211_debugfs_key_remove_mgmt_default(sdata);
	430	}
	431
	432	void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
	433	{
	434	if (!sdata)
	435	return;
	436
7bcfaf2f JB	437	debugfs_remove(sdata->debugfs.default_mgmt_key);
7bcfaf2f JB	438	sdata->debugfs.default_mgmt_key = NULL;
3cfcf6ac JM	439	}
3cfcf6ac JM	440
e9f207f0 JB	441	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	442	struct sta_info *sta)
	443	{
	444	debugfs_remove(key->debugfs.stalink);
	445	key->debugfs.stalink = NULL;
	446	}