[linux-block.git] / net / mac80211 / debugfs_key.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * 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
 */

#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);

	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_add_beacon_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_beacon_key);
	if (key) {
		sprintf(buf, "../keys/%d", key->debugfs.cnt);
		sdata->debugfs.default_beacon_key =
			debugfs_create_symlink("default_beacon_key",
					       sdata->vif.debugfs_dir, buf);
	} else {
		ieee80211_debugfs_key_remove_beacon_default(sdata);
	}
}

void
ieee80211_debugfs_key_remove_beacon_default(struct ieee80211_sub_if_data *sdata)
{
	if (!sdata)
		return;

	debugfs_remove(sdata->debugfs.default_beacon_key);
	sdata->debugfs.default_beacon_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
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
e9f207f0 JB	2	/*
	3	* Copyright 2003-2005 Devicescape Software, Inc.
	4	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	5	* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d0a77c65	6	* Copyright (C) 2015 Intel Deutschland GmbH
e9f207f0 JB	7	*/
	8
	9	#include <linux/kobject.h>
5a0e3ad6	10	#include <linux/slab.h>
e9f207f0	11	#include "ieee80211_i.h"
2c8dccc7	12	#include "key.h"
e9f207f0 JB	13	#include "debugfs.h"
	14	#include "debugfs_key.h"
	15
07caf9d6	16	#define KEY_READ(name, prop, format_string) \
e9f207f0 JB	17	static ssize_t key_##name##_read(struct file *file, \
	18	char __user *userbuf, \
	19	size_t count, loff_t *ppos) \
	20	{ \
e9f207f0	21	struct ieee80211_key *key = file->private_data; \
07caf9d6 EP	22	return mac80211_format_buffer(userbuf, count, ppos, \
07caf9d6 EP	23	format_string, key->prop); \
e9f207f0	24	}
07caf9d6 EP	25	#define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
07caf9d6 EP	26	#define KEY_READ_X(name) KEY_READ(name, name, "0x%x\n")
e9f207f0 JB	27
	28	#define KEY_OPS(name) \
	29	static const struct file_operations key_ ##name## _ops = { \
	30	.read = key_##name##_read, \
234e3405	31	.open = simple_open, \
2b18ab36	32	.llseek = generic_file_llseek, \
e9f207f0 JB	33	}
e9f207f0 JB	34
d0a77c65 JB	35	#define KEY_OPS_W(name) \
	36	static const struct file_operations key_ ##name## _ops = { \
	37	.read = key_##name##_read, \
	38	.write = key_##name##_write, \
	39	.open = simple_open, \
	40	.llseek = generic_file_llseek, \
	41	}
	42
e9f207f0 JB	43	#define KEY_FILE(name, format) \
	44	KEY_READ_##format(name) \
	45	KEY_OPS(name)
	46
07caf9d6 EP	47	#define KEY_CONF_READ(name, format_string) \
	48	KEY_READ(conf_##name, conf.name, format_string)
	49	#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, "%d\n")
8f20fc24 JB	50
	51	#define KEY_CONF_OPS(name) \
	52	static const struct file_operations key_ ##name## _ops = { \
	53	.read = key_conf_##name##_read, \
234e3405	54	.open = simple_open, \
2b18ab36	55	.llseek = generic_file_llseek, \
8f20fc24 JB	56	}
	57
	58	#define KEY_CONF_FILE(name, format) \
	59	KEY_CONF_READ_##format(name) \
	60	KEY_CONF_OPS(name)
	61
	62	KEY_CONF_FILE(keylen, D);
	63	KEY_CONF_FILE(keyidx, D);
	64	KEY_CONF_FILE(hw_key_idx, D);
11a843b7	65	KEY_FILE(flags, X);
07caf9d6	66	KEY_READ(ifindex, sdata->name, "%s\n");
e7a64f12	67	KEY_OPS(ifindex);
e9f207f0 JB	68
	69	static ssize_t key_algorithm_read(struct file *file,
	70	char __user *userbuf,
	71	size_t count, loff_t *ppos)
	72	{
97359d12	73	char buf[15];
e9f207f0	74	struct ieee80211_key *key = file->private_data;
97359d12	75	u32 c = key->conf.cipher;
e9f207f0	76
97359d12 JB	77	sprintf(buf, "%.2x-%.2x-%.2x:%d\n",
	78	c >> 24, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
	79	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
e9f207f0 JB	80	}
	81	KEY_OPS(algorithm);
	82
d0a77c65 JB	83	static ssize_t key_tx_spec_write(struct file file, const char __user userbuf,
	84	size_t count, loff_t *ppos)
	85	{
	86	struct ieee80211_key *key = file->private_data;
	87	u64 pn;
	88	int ret;
	89
	90	switch (key->conf.cipher) {
	91	case WLAN_CIPHER_SUITE_WEP40:
	92	case WLAN_CIPHER_SUITE_WEP104:
	93	return -EINVAL;
	94	case WLAN_CIPHER_SUITE_TKIP:
	95	/* not supported yet */
	96	return -EOPNOTSUPP;
	97	case WLAN_CIPHER_SUITE_CCMP:
	98	case WLAN_CIPHER_SUITE_CCMP_256:
	99	case WLAN_CIPHER_SUITE_AES_CMAC:
	100	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
	101	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	102	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	103	case WLAN_CIPHER_SUITE_GCMP:
	104	case WLAN_CIPHER_SUITE_GCMP_256:
	105	ret = kstrtou64_from_user(userbuf, count, 16, &pn);
	106	if (ret)
	107	return ret;
	108	/* PN is a 48-bit counter */
	109	if (pn >= (1ULL << 48))
	110	return -ERANGE;
	111	atomic64_set(&key->conf.tx_pn, pn);
	112	return count;
	113	default:
	114	return 0;
	115	}
	116	}
	117
e9f207f0 JB	118	static ssize_t key_tx_spec_read(struct file file, char __user userbuf,
	119	size_t count, loff_t *ppos)
	120	{
aba83a0b	121	u64 pn;
e9f207f0 JB	122	char buf[20];
	123	int len;
	124	struct ieee80211_key *key = file->private_data;
	125
97359d12 JB	126	switch (key->conf.cipher) {
	127	case WLAN_CIPHER_SUITE_WEP40:
	128	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	129	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	130	break;
97359d12	131	case WLAN_CIPHER_SUITE_TKIP:
f8079d43	132	pn = atomic64_read(&key->conf.tx_pn);
e9f207f0	133	len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
f8079d43 EP	134	TKIP_PN_TO_IV32(pn),
f8079d43 EP	135	TKIP_PN_TO_IV16(pn));
50339a67	136	break;
97359d12	137	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	138	case WLAN_CIPHER_SUITE_CCMP_256:
97359d12	139	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	140	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
8ade538b JM	141	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
8ade538b JM	142	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
00b9cfa3 JM	143	case WLAN_CIPHER_SUITE_GCMP:
00b9cfa3 JM	144	case WLAN_CIPHER_SUITE_GCMP_256:
db388a56	145	pn = atomic64_read(&key->conf.tx_pn);
00b9cfa3 JM	146	len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
	147	(u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24),
	148	(u8)(pn >> 16), (u8)(pn >> 8), (u8)pn);
	149	break;
e9f207f0 JB	150	default:
	151	return 0;
	152	}
	153	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	154	}
d0a77c65	155	KEY_OPS_W(tx_spec);
e9f207f0 JB	156
	157	static ssize_t key_rx_spec_read(struct file file, char __user userbuf,
	158	size_t count, loff_t *ppos)
	159	{
	160	struct ieee80211_key *key = file->private_data;
5a306f58	161	char buf[14IEEE80211_NUM_TIDS+1], p = buf;
e9f207f0 JB	162	int i, len;
	163	const u8 *rpn;
	164
97359d12 JB	165	switch (key->conf.cipher) {
	166	case WLAN_CIPHER_SUITE_WEP40:
	167	case WLAN_CIPHER_SUITE_WEP104:
e9f207f0	168	len = scnprintf(buf, sizeof(buf), "\n");
50339a67	169	break;
97359d12	170	case WLAN_CIPHER_SUITE_TKIP:
5a306f58	171	for (i = 0; i < IEEE80211_NUM_TIDS; i++)
e9f207f0 JB	172	p += scnprintf(p, sizeof(buf)+buf-p,
e9f207f0 JB	173	"%08x %04x\n",
b0f76b33 HH	174	key->u.tkip.rx[i].iv32,
b0f76b33 HH	175	key->u.tkip.rx[i].iv16);
e9f207f0	176	len = p - buf;
50339a67	177	break;
97359d12	178	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	179	case WLAN_CIPHER_SUITE_CCMP_256:
5a306f58	180	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
e9f207f0 JB	181	rpn = key->u.ccmp.rx_pn[i];
	182	p += scnprintf(p, sizeof(buf)+buf-p,
	183	"%02x%02x%02x%02x%02x%02x\n",
	184	rpn[0], rpn[1], rpn[2],
	185	rpn[3], rpn[4], rpn[5]);
	186	}
	187	len = p - buf;
50339a67	188	break;
97359d12	189	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	190	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	191	rpn = key->u.aes_cmac.rx_pn;
	192	p += scnprintf(p, sizeof(buf)+buf-p,
	193	"%02x%02x%02x%02x%02x%02x\n",
	194	rpn[0], rpn[1], rpn[2],
	195	rpn[3], rpn[4], rpn[5]);
	196	len = p - buf;
	197	break;
8ade538b JM	198	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	199	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	200	rpn = key->u.aes_gmac.rx_pn;
	201	p += scnprintf(p, sizeof(buf)+buf-p,
	202	"%02x%02x%02x%02x%02x%02x\n",
	203	rpn[0], rpn[1], rpn[2],
	204	rpn[3], rpn[4], rpn[5]);
	205	len = p - buf;
	206	break;
00b9cfa3 JM	207	case WLAN_CIPHER_SUITE_GCMP:
	208	case WLAN_CIPHER_SUITE_GCMP_256:
	209	for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
	210	rpn = key->u.gcmp.rx_pn[i];
	211	p += scnprintf(p, sizeof(buf)+buf-p,
	212	"%02x%02x%02x%02x%02x%02x\n",
	213	rpn[0], rpn[1], rpn[2],
	214	rpn[3], rpn[4], rpn[5]);
	215	}
	216	len = p - buf;
	217	break;
e9f207f0 JB	218	default:
	219	return 0;
	220	}
	221	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	222	}
	223	KEY_OPS(rx_spec);
	224
	225	static ssize_t key_replays_read(struct file file, char __user userbuf,
	226	size_t count, loff_t *ppos)
	227	{
	228	struct ieee80211_key *key = file->private_data;
	229	char buf[20];
	230	int len;
	231
97359d12 JB	232	switch (key->conf.cipher) {
97359d12 JB	233	case WLAN_CIPHER_SUITE_CCMP:
2b2ba0db	234	case WLAN_CIPHER_SUITE_CCMP_256:
3cfcf6ac JM	235	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
3cfcf6ac JM	236	break;
97359d12	237	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	238	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	239	len = scnprintf(buf, sizeof(buf), "%u\n",
	240	key->u.aes_cmac.replays);
	241	break;
8ade538b JM	242	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	243	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	244	len = scnprintf(buf, sizeof(buf), "%u\n",
	245	key->u.aes_gmac.replays);
	246	break;
00b9cfa3 JM	247	case WLAN_CIPHER_SUITE_GCMP:
	248	case WLAN_CIPHER_SUITE_GCMP_256:
	249	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.gcmp.replays);
	250	break;
3cfcf6ac	251	default:
e9f207f0	252	return 0;
3cfcf6ac	253	}
e9f207f0 JB	254	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	255	}
	256	KEY_OPS(replays);
	257
3cfcf6ac JM	258	static ssize_t key_icverrors_read(struct file file, char __user userbuf,
	259	size_t count, loff_t *ppos)
	260	{
	261	struct ieee80211_key *key = file->private_data;
	262	char buf[20];
	263	int len;
	264
97359d12 JB	265	switch (key->conf.cipher) {
97359d12 JB	266	case WLAN_CIPHER_SUITE_AES_CMAC:
56c52da2	267	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3cfcf6ac JM	268	len = scnprintf(buf, sizeof(buf), "%u\n",
	269	key->u.aes_cmac.icverrors);
	270	break;
8ade538b JM	271	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	272	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
	273	len = scnprintf(buf, sizeof(buf), "%u\n",
	274	key->u.aes_gmac.icverrors);
	275	break;
3cfcf6ac JM	276	default:
	277	return 0;
	278	}
	279	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	280	}
	281	KEY_OPS(icverrors);
	282
b98ea058 S	283	static ssize_t key_mic_failures_read(struct file file, char __user userbuf,
	284	size_t count, loff_t *ppos)
	285	{
	286	struct ieee80211_key *key = file->private_data;
	287	char buf[20];
	288	int len;
	289
	290	if (key->conf.cipher != WLAN_CIPHER_SUITE_TKIP)
	291	return -EINVAL;
	292
	293	len = scnprintf(buf, sizeof(buf), "%u\n", key->u.tkip.mic_failures);
	294
	295	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
	296	}
	297	KEY_OPS(mic_failures);
	298
e9f207f0 JB	299	static ssize_t key_key_read(struct file file, char __user userbuf,
	300	size_t count, loff_t *ppos)
	301	{
	302	struct ieee80211_key *key = file->private_data;
520efd1a	303	int i, bufsize = 2 * key->conf.keylen + 2;
e9f207f0 JB	304	char *buf = kmalloc(bufsize, GFP_KERNEL);
e9f207f0 JB	305	char *p = buf;
520efd1a JJ	306	ssize_t res;
	307
	308	if (!buf)
	309	return -ENOMEM;
e9f207f0	310
8f20fc24 JB	311	for (i = 0; i < key->conf.keylen; i++)
8f20fc24 JB	312	p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
e9f207f0 JB	313	p += scnprintf(p, bufsize+buf-p, "\n");
	314	res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
	315	kfree(buf);
	316	return res;
	317	}
	318	KEY_OPS(key);
	319
	320	#define DEBUGFS_ADD(name) \
7bcfaf2f	321	debugfs_create_file(#name, 0400, key->debugfs.dir, \
84674ef4	322	key, &key_##name##_ops)
d0a77c65 JB	323	#define DEBUGFS_ADD_W(name) \
	324	debugfs_create_file(#name, 0600, key->debugfs.dir, \
	325	key, &key_##name##_ops);
e9f207f0	326
3b96766f	327	void ieee80211_debugfs_key_add(struct ieee80211_key *key)
9446f3ef	328	{
50339a67	329	static int keycount;
9446f3ef	330	char buf[100];
3b96766f	331	struct sta_info *sta;
e9f207f0	332
3b96766f	333	if (!key->local->debugfs.keys)
e9f207f0 JB	334	return;
e9f207f0 JB	335
50339a67	336	sprintf(buf, "%d", keycount);
d9c58f30	337	key->debugfs.cnt = keycount;
50339a67	338	keycount++;
e9f207f0	339	key->debugfs.dir = debugfs_create_dir(buf,
3b96766f	340	key->local->debugfs.keys);
e9f207f0	341
40b275b6 JB	342	sta = key->sta;
40b275b6 JB	343	if (sta) {
9446f3ef JB	344	sprintf(buf, "../../netdev:%s/stations/%pM",
9446f3ef JB	345	sta->sdata->name, sta->sta.addr);
3b96766f JB	346	key->debugfs.stalink =
3b96766f JB	347	debugfs_create_symlink("station", key->debugfs.dir, buf);
40b275b6	348	}
3b96766f	349
e9f207f0	350	DEBUGFS_ADD(keylen);
8f20fc24	351	DEBUGFS_ADD(flags);
e9f207f0 JB	352	DEBUGFS_ADD(keyidx);
e9f207f0 JB	353	DEBUGFS_ADD(hw_key_idx);
e9f207f0	354	DEBUGFS_ADD(algorithm);
d0a77c65	355	DEBUGFS_ADD_W(tx_spec);
e9f207f0 JB	356	DEBUGFS_ADD(rx_spec);
e9f207f0 JB	357	DEBUGFS_ADD(replays);
3cfcf6ac	358	DEBUGFS_ADD(icverrors);
b98ea058	359	DEBUGFS_ADD(mic_failures);
e9f207f0	360	DEBUGFS_ADD(key);
e7a64f12	361	DEBUGFS_ADD(ifindex);
e9f207f0 JB	362	};
e9f207f0 JB	363
e9f207f0 JB	364	void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
	365	{
	366	if (!key)
	367	return;
	368
7bcfaf2f	369	debugfs_remove_recursive(key->debugfs.dir);
e9f207f0 JB	370	key->debugfs.dir = NULL;
e9f207f0 JB	371	}
f7e0104c JB	372
f7e0104c JB	373	void ieee80211_debugfs_key_update_default(struct ieee80211_sub_if_data *sdata)
e9f207f0 JB	374	{
e9f207f0 JB	375	char buf[50];
78520cad	376	struct ieee80211_key *key;
e9f207f0	377
ddbfe860	378	if (!sdata->vif.debugfs_dir)
e9f207f0 JB	379	return;
e9f207f0 JB	380
f7e0104c	381	lockdep_assert_held(&sdata->local->key_mtx);
78520cad	382
5c6761ad FF	383	debugfs_remove(sdata->debugfs.default_unicast_key);
5c6761ad FF	384	sdata->debugfs.default_unicast_key = NULL;
135792ec	385
f7e0104c	386	if (sdata->default_unicast_key) {
40b275b6 JB	387	key = key_mtx_dereference(sdata->local,
40b275b6 JB	388	sdata->default_unicast_key);
78520cad	389	sprintf(buf, "../keys/%d", key->debugfs.cnt);
f7e0104c JB	390	sdata->debugfs.default_unicast_key =
f7e0104c JB	391	debugfs_create_symlink("default_unicast_key",
ddbfe860	392	sdata->vif.debugfs_dir, buf);
135792ec JB	393	}
135792ec JB	394
5c6761ad FF	395	debugfs_remove(sdata->debugfs.default_multicast_key);
5c6761ad FF	396	sdata->debugfs.default_multicast_key = NULL;
e9f207f0	397
f7e0104c	398	if (sdata->default_multicast_key) {
40b275b6 JB	399	key = key_mtx_dereference(sdata->local,
40b275b6 JB	400	sdata->default_multicast_key);
f7e0104c JB	401	sprintf(buf, "../keys/%d", key->debugfs.cnt);
	402	sdata->debugfs.default_multicast_key =
	403	debugfs_create_symlink("default_multicast_key",
ddbfe860	404	sdata->vif.debugfs_dir, buf);
f7e0104c	405	}
e9f207f0	406	}
e9f207f0	407
3cfcf6ac JM	408	void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
	409	{
	410	char buf[50];
	411	struct ieee80211_key *key;
	412
ddbfe860	413	if (!sdata->vif.debugfs_dir)
3cfcf6ac JM	414	return;
3cfcf6ac JM	415
40b275b6 JB	416	key = key_mtx_dereference(sdata->local,
40b275b6 JB	417	sdata->default_mgmt_key);
3cfcf6ac JM	418	if (key) {
3cfcf6ac JM	419	sprintf(buf, "../keys/%d", key->debugfs.cnt);
7bcfaf2f	420	sdata->debugfs.default_mgmt_key =
3cfcf6ac	421	debugfs_create_symlink("default_mgmt_key",
ddbfe860	422	sdata->vif.debugfs_dir, buf);
3cfcf6ac JM	423	} else
	424	ieee80211_debugfs_key_remove_mgmt_default(sdata);
	425	}
	426
	427	void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
	428	{
	429	if (!sdata)
	430	return;
	431
7bcfaf2f JB	432	debugfs_remove(sdata->debugfs.default_mgmt_key);
7bcfaf2f JB	433	sdata->debugfs.default_mgmt_key = NULL;
3cfcf6ac JM	434	}
3cfcf6ac JM	435
e5473e80 JM	436	void
	437	ieee80211_debugfs_key_add_beacon_default(struct ieee80211_sub_if_data *sdata)
	438	{
	439	char buf[50];
	440	struct ieee80211_key *key;
	441
	442	if (!sdata->vif.debugfs_dir)
	443	return;
	444
	445	key = key_mtx_dereference(sdata->local,
	446	sdata->default_beacon_key);
	447	if (key) {
	448	sprintf(buf, "../keys/%d", key->debugfs.cnt);
	449	sdata->debugfs.default_beacon_key =
	450	debugfs_create_symlink("default_beacon_key",
	451	sdata->vif.debugfs_dir, buf);
	452	} else {
	453	ieee80211_debugfs_key_remove_beacon_default(sdata);
	454	}
	455	}
	456
	457	void
	458	ieee80211_debugfs_key_remove_beacon_default(struct ieee80211_sub_if_data *sdata)
	459	{
	460	if (!sdata)
	461	return;
	462
	463	debugfs_remove(sdata->debugfs.default_beacon_key);
	464	sdata->debugfs.default_beacon_key = NULL;
	465	}
	466
e9f207f0 JB	467	void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
	468	struct sta_info *sta)
	469	{
	470	debugfs_remove(key->debugfs.stalink);
	471	key->debugfs.stalink = NULL;
	472	}