[deliverable/linux.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/list.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_local;
struct ieee80211_sub_if_data;
struct sta_info;

#define KEY_FLAG_UPLOADED_TO_HARDWARE	(1<<0)

struct ieee80211_key {
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;

	struct list_head list;

	unsigned int flags;

	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;
		struct dentry *ifindex;
	} debugfs;
#endif

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

struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
					  struct sta_info *sta,
					  enum ieee80211_key_alg alg,
					  int idx,
					  size_t key_len,
					  const u8 *key_data);
void ieee80211_key_free(struct ieee80211_key *key);
void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);

#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>
8f37171a	14	#include <linux/list.h>
f0706e82 JB	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
11a843b7 JB	44	struct ieee80211_local;
	45	struct ieee80211_sub_if_data;
	46	struct sta_info;
	47
	48	#define KEY_FLAG_UPLOADED_TO_HARDWARE (1<<0)
	49
f0706e82	50	struct ieee80211_key {
11a843b7 JB	51	struct ieee80211_local *local;
	52	struct ieee80211_sub_if_data *sdata;
	53	struct sta_info *sta;
	54
	55	struct list_head list;
	56
	57	unsigned int flags;
	58
f0706e82 JB	59	union {
	60	struct {
	61	/* last used TSC */
	62	u32 iv32;
	63	u16 iv16;
	64	u16 p1k[5];
	65	int tx_initialized;
	66
	67	/* last received RSC */
	68	u32 iv32_rx[NUM_RX_DATA_QUEUES];
	69	u16 iv16_rx[NUM_RX_DATA_QUEUES];
	70	u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
	71	int rx_initialized[NUM_RX_DATA_QUEUES];
	72	} tkip;
	73	struct {
	74	u8 tx_pn[6];
	75	u8 rx_pn[NUM_RX_DATA_QUEUES][6];
	76	struct crypto_cipher *tfm;
	77	u32 replays; /* dot11RSNAStatsCCMPReplays */
	78	/* scratch buffers for virt_to_page() (crypto API) */
	79	#ifndef AES_BLOCK_LEN
	80	#define AES_BLOCK_LEN 16
	81	#endif
	82	u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
	83	u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
	84	} ccmp;
	85	} u;
f0706e82	86
8f20fc24 JB	87	/* number of times this key has been used */
8f20fc24 JB	88	int tx_rx_count;
f0706e82	89
e9f207f0 JB	90	#ifdef CONFIG_MAC80211_DEBUGFS
	91	struct {
	92	struct dentry *stalink;
	93	struct dentry *dir;
	94	struct dentry *keylen;
8f20fc24	95	struct dentry *flags;
e9f207f0 JB	96	struct dentry *keyidx;
	97	struct dentry *hw_key_idx;
	98	struct dentry *tx_rx_count;
	99	struct dentry *algorithm;
	100	struct dentry *tx_spec;
	101	struct dentry *rx_spec;
	102	struct dentry *replays;
	103	struct dentry *key;
e7a64f12	104	struct dentry *ifindex;
e9f207f0 JB	105	} debugfs;
	106	#endif
	107
8f20fc24 JB	108	/*
	109	* key config, must be last because it contains key
	110	* material as variable length member
	111	*/
	112	struct ieee80211_key_conf conf;
f0706e82 JB	113	};
f0706e82 JB	114
11a843b7 JB	115	struct ieee80211_key ieee80211_key_alloc(struct ieee80211_sub_if_data sdata,
11a843b7 JB	116	struct sta_info *sta,
ea49c359	117	enum ieee80211_key_alg alg,
11a843b7 JB	118	int idx,
	119	size_t key_len,
	120	const u8 *key_data);
	121	void ieee80211_key_free(struct ieee80211_key *key);
	122	void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
	123	void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
	124	void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
	125	void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
	126
f0706e82	127	#endif /* IEEE80211_KEY_H */