[mirror_ubuntu-artful-kernel.git] / net / mac80211 / ieee80211_key.h

/*
 * Copyright 2002-2004, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 *
 * 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.
 */

#ifndef IEEE80211_KEY_H
#define IEEE80211_KEY_H

#include <linux/types.h>
#include <linux/kref.h>
#include <linux/crypto.h>
#include <net/mac80211.h>

/* ALG_TKIP
 * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
 * Temporal Encryption Key (128 bits)
 * Temporal Authenticator Tx MIC Key (64 bits)
 * Temporal Authenticator Rx MIC Key (64 bits)
 */

#define WEP_IV_LEN 4
#define WEP_ICV_LEN 4

#define ALG_TKIP_KEY_LEN 32
/* Starting offsets for each key */
#define ALG_TKIP_TEMP_ENCR_KEY 0
#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
#define TKIP_IV_LEN 8
#define TKIP_ICV_LEN 4

#define ALG_CCMP_KEY_LEN 16
#define CCMP_HDR_LEN 8
#define CCMP_MIC_LEN 8
#define CCMP_TK_LEN 16
#define CCMP_PN_LEN 6

#define NUM_RX_DATA_QUEUES 17

struct ieee80211_key {
	struct kref kref;

	union {
		struct {
			/* last used TSC */
			u32 iv32;
			u16 iv16;
			u16 p1k[5];
			int tx_initialized;

			/* last received RSC */
			u32 iv32_rx[NUM_RX_DATA_QUEUES];
			u16 iv16_rx[NUM_RX_DATA_QUEUES];
			u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
			int rx_initialized[NUM_RX_DATA_QUEUES];
		} tkip;
		struct {
			u8 tx_pn[6];
			u8 rx_pn[NUM_RX_DATA_QUEUES][6];
			struct crypto_cipher *tfm;
			u32 replays; /* dot11RSNAStatsCCMPReplays */
			/* scratch buffers for virt_to_page() (crypto API) */
#ifndef AES_BLOCK_LEN
#define AES_BLOCK_LEN 16
#endif
			u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
			u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
		} ccmp;
	} u;

	/* number of times this key has been used */
	int tx_rx_count;

#ifdef CONFIG_MAC80211_DEBUGFS
	struct {
		struct dentry *stalink;
		struct dentry *dir;
		struct dentry *keylen;
		struct dentry *flags;
		struct dentry *keyidx;
		struct dentry *hw_key_idx;
		struct dentry *tx_rx_count;
		struct dentry *algorithm;
		struct dentry *tx_spec;
		struct dentry *rx_spec;
		struct dentry *replays;
		struct dentry *key;
	} debugfs;
#endif

	/*
	 * key config, must be last because it contains key
	 * material as variable length member
	 */
	struct ieee80211_key_conf conf;
};

#endif /* IEEE80211_KEY_H */
Commit	Line	Data
f0706e82 JB	1	/*
	2	* Copyright 2002-2004, Instant802 Networks, Inc.
	3	* Copyright 2005, Devicescape Software, Inc.
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*/
	9
	10	#ifndef IEEE80211_KEY_H
	11	#define IEEE80211_KEY_H
	12
	13	#include <linux/types.h>
	14	#include <linux/kref.h>
	15	#include <linux/crypto.h>
	16	#include <net/mac80211.h>
	17
	18	/* ALG_TKIP
	19	* struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
	20	* Temporal Encryption Key (128 bits)
	21	* Temporal Authenticator Tx MIC Key (64 bits)
	22	* Temporal Authenticator Rx MIC Key (64 bits)
	23	*/
	24
	25	#define WEP_IV_LEN 4
	26	#define WEP_ICV_LEN 4
	27
	28	#define ALG_TKIP_KEY_LEN 32
	29	/* Starting offsets for each key */
	30	#define ALG_TKIP_TEMP_ENCR_KEY 0
	31	#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
	32	#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
	33	#define TKIP_IV_LEN 8
	34	#define TKIP_ICV_LEN 4
	35
	36	#define ALG_CCMP_KEY_LEN 16
	37	#define CCMP_HDR_LEN 8
	38	#define CCMP_MIC_LEN 8
	39	#define CCMP_TK_LEN 16
	40	#define CCMP_PN_LEN 6
	41
	42	#define NUM_RX_DATA_QUEUES 17
	43
	44	struct ieee80211_key {
	45	struct kref kref;
	46
f0706e82 JB	47	union {
	48	struct {
	49	/* last used TSC */
	50	u32 iv32;
	51	u16 iv16;
	52	u16 p1k[5];
	53	int tx_initialized;
	54
	55	/* last received RSC */
	56	u32 iv32_rx[NUM_RX_DATA_QUEUES];
	57	u16 iv16_rx[NUM_RX_DATA_QUEUES];
	58	u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
	59	int rx_initialized[NUM_RX_DATA_QUEUES];
	60	} tkip;
	61	struct {
	62	u8 tx_pn[6];
	63	u8 rx_pn[NUM_RX_DATA_QUEUES][6];
	64	struct crypto_cipher *tfm;
	65	u32 replays; /* dot11RSNAStatsCCMPReplays */
	66	/* scratch buffers for virt_to_page() (crypto API) */
	67	#ifndef AES_BLOCK_LEN
	68	#define AES_BLOCK_LEN 16
	69	#endif
	70	u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
	71	u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
	72	} ccmp;
	73	} u;
f0706e82	74
8f20fc24 JB	75	/* number of times this key has been used */
8f20fc24 JB	76	int tx_rx_count;
f0706e82	77
e9f207f0 JB	78	#ifdef CONFIG_MAC80211_DEBUGFS
	79	struct {
	80	struct dentry *stalink;
	81	struct dentry *dir;
	82	struct dentry *keylen;
8f20fc24	83	struct dentry *flags;
e9f207f0 JB	84	struct dentry *keyidx;
	85	struct dentry *hw_key_idx;
	86	struct dentry *tx_rx_count;
	87	struct dentry *algorithm;
	88	struct dentry *tx_spec;
	89	struct dentry *rx_spec;
	90	struct dentry *replays;
	91	struct dentry *key;
	92	} debugfs;
	93	#endif
	94
8f20fc24 JB	95	/*
	96	* key config, must be last because it contains key
	97	* material as variable length member
	98	*/
	99	struct ieee80211_key_conf conf;
f0706e82 JB	100	};
	101
	102	#endif /* IEEE80211_KEY_H */