[linux-2.6-block.git] / net / mac802154 / llsec.h

/*
 * Copyright (C) 2014 Fraunhofer ITWM
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Written by:
 * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
 */

#ifndef MAC802154_LLSEC_H
#define MAC802154_LLSEC_H

#include <linux/slab.h>
#include <linux/hashtable.h>
#include <linux/crypto.h>
#include <linux/kref.h>
#include <linux/spinlock.h>
#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>

struct mac802154_llsec_key {
	struct ieee802154_llsec_key key;

	/* one tfm for each authsize (4/8/16) */
	struct crypto_aead *tfm[3];
	struct crypto_blkcipher *tfm0;

	struct kref ref;
};

struct mac802154_llsec_device_key {
	struct ieee802154_llsec_device_key devkey;

	struct rcu_head rcu;
};

struct mac802154_llsec_device {
	struct ieee802154_llsec_device dev;

	struct hlist_node bucket_s;
	struct hlist_node bucket_hw;

	/* protects dev.frame_counter and the elements of dev.keys */
	spinlock_t lock;

	struct rcu_head rcu;
};

struct mac802154_llsec_seclevel {
	struct ieee802154_llsec_seclevel level;

	struct rcu_head rcu;
};

struct mac802154_llsec {
	struct ieee802154_llsec_params params;
	struct ieee802154_llsec_table table;

	DECLARE_HASHTABLE(devices_short, 6);
	DECLARE_HASHTABLE(devices_hw, 6);

	/* protects params, all other fields are fine with RCU */
	rwlock_t lock;
};

void mac802154_llsec_init(struct mac802154_llsec *sec);
void mac802154_llsec_destroy(struct mac802154_llsec *sec);

int mac802154_llsec_get_params(struct mac802154_llsec *sec,
			       struct ieee802154_llsec_params *params);
int mac802154_llsec_set_params(struct mac802154_llsec *sec,
			       const struct ieee802154_llsec_params *params,
			       int changed);

int mac802154_llsec_key_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *id,
			    const struct ieee802154_llsec_key *key);
int mac802154_llsec_key_del(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *key);

int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_device *dev);
int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
			    __le64 device_addr);

int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key);
int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key);

int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl);
int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl);

int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb);

#endif /* MAC802154_LLSEC_H */
Commit	Line	Data
5d637d5a PB	1	/*
	2	* Copyright (C) 2014 Fraunhofer ITWM
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2
	6	* as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* Written by:
	14	* Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
	15	*/
	16
	17	#ifndef MAC802154_LLSEC_H
	18	#define MAC802154_LLSEC_H
	19
	20	#include <linux/slab.h>
	21	#include <linux/hashtable.h>
	22	#include <linux/crypto.h>
	23	#include <linux/kref.h>
	24	#include <linux/spinlock.h>
	25	#include <net/af_ieee802154.h>
	26	#include <net/ieee802154_netdev.h>
	27
	28	struct mac802154_llsec_key {
	29	struct ieee802154_llsec_key key;
	30
	31	/* one tfm for each authsize (4/8/16) */
	32	struct crypto_aead *tfm[3];
	33	struct crypto_blkcipher *tfm0;
	34
	35	struct kref ref;
	36	};
	37
	38	struct mac802154_llsec_device_key {
	39	struct ieee802154_llsec_device_key devkey;
	40
	41	struct rcu_head rcu;
	42	};
	43
	44	struct mac802154_llsec_device {
	45	struct ieee802154_llsec_device dev;
	46
	47	struct hlist_node bucket_s;
	48	struct hlist_node bucket_hw;
	49
	50	/* protects dev.frame_counter and the elements of dev.keys */
	51	spinlock_t lock;
	52
	53	struct rcu_head rcu;
	54	};
	55
	56	struct mac802154_llsec_seclevel {
	57	struct ieee802154_llsec_seclevel level;
	58
	59	struct rcu_head rcu;
	60	};
	61
	62	struct mac802154_llsec {
	63	struct ieee802154_llsec_params params;
	64	struct ieee802154_llsec_table table;
65
66	DECLARE_HASHTABLE(devices_short, 6);
67	DECLARE_HASHTABLE(devices_hw, 6);
68
69	/* protects params, all other fields are fine with RCU */
70	rwlock_t lock;
71	};
72
73	void mac802154_llsec_init(struct mac802154_llsec *sec);
74	void mac802154_llsec_destroy(struct mac802154_llsec *sec);
75
76	int mac802154_llsec_get_params(struct mac802154_llsec *sec,
77	struct ieee802154_llsec_params *params);
78	int mac802154_llsec_set_params(struct mac802154_llsec *sec,
79	const struct ieee802154_llsec_params *params,
80	int changed);
81
82	int mac802154_llsec_key_add(struct mac802154_llsec *sec,
83	const struct ieee802154_llsec_key_id *id,
84	const struct ieee802154_llsec_key *key);
85	int mac802154_llsec_key_del(struct mac802154_llsec *sec,
86	const struct ieee802154_llsec_key_id *key);
87
88	int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
89	const struct ieee802154_llsec_device *dev);
90	int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
91	__le64 device_addr);
92
93	int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
94	__le64 dev_addr,
95	const struct ieee802154_llsec_device_key *key);
96	int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
97	__le64 dev_addr,
98	const struct ieee802154_llsec_device_key *key);
99
100	int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
101	const struct ieee802154_llsec_seclevel *sl);
102	int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
103	const struct ieee802154_llsec_seclevel *sl);
104
03556e4d	105	int mac802154_llsec_encrypt(struct mac802154_llsec sec, struct sk_buff skb);
4c14a2fb	106	int mac802154_llsec_decrypt(struct mac802154_llsec sec, struct sk_buff skb);
03556e4d	107
5d637d5a	108	#endif /* MAC802154_LLSEC_H */