[linux.git] / net / mac802154 / llsec.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2014 Fraunhofer ITWM
 *
 * Written by:
 * Phoebe Buckheister <[email protected]>
 */

#ifndef MAC802154_LLSEC_H
#define MAC802154_LLSEC_H

#include <linux/slab.h>
#include <linux/hashtable.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_sync_skcipher *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
1802d0be	1	/* SPDX-License-Identifier: GPL-2.0-only */
5d637d5a PB	2	/*
	3	* Copyright (C) 2014 Fraunhofer ITWM
	4	*
5d637d5a PB	5	* Written by:
	6	* Phoebe Buckheister <[email protected]>
	7	*/
	8
	9	#ifndef MAC802154_LLSEC_H
	10	#define MAC802154_LLSEC_H
	11
	12	#include <linux/slab.h>
	13	#include <linux/hashtable.h>
5d637d5a PB	14	#include <linux/kref.h>
	15	#include <linux/spinlock.h>
	16	#include <net/af_ieee802154.h>
	17	#include <net/ieee802154_netdev.h>
	18
	19	struct mac802154_llsec_key {
	20	struct ieee802154_llsec_key key;
	21
	22	/* one tfm for each authsize (4/8/16) */
	23	struct crypto_aead *tfm[3];
3103f4a7	24	struct crypto_sync_skcipher *tfm0;
5d637d5a PB	25
	26	struct kref ref;
	27	};
	28
	29	struct mac802154_llsec_device_key {
	30	struct ieee802154_llsec_device_key devkey;
	31
	32	struct rcu_head rcu;
	33	};
	34
	35	struct mac802154_llsec_device {
	36	struct ieee802154_llsec_device dev;
	37
	38	struct hlist_node bucket_s;
	39	struct hlist_node bucket_hw;
	40
	41	/* protects dev.frame_counter and the elements of dev.keys */
	42	spinlock_t lock;
	43
	44	struct rcu_head rcu;
	45	};
	46
	47	struct mac802154_llsec_seclevel {
	48	struct ieee802154_llsec_seclevel level;
	49
	50	struct rcu_head rcu;
	51	};
	52
	53	struct mac802154_llsec {
	54	struct ieee802154_llsec_params params;
	55	struct ieee802154_llsec_table table;
	56
	57	DECLARE_HASHTABLE(devices_short, 6);
	58	DECLARE_HASHTABLE(devices_hw, 6);
	59
	60	/* protects params, all other fields are fine with RCU */
	61	rwlock_t lock;
	62	};
	63
	64	void mac802154_llsec_init(struct mac802154_llsec *sec);
	65	void mac802154_llsec_destroy(struct mac802154_llsec *sec);
	66
	67	int mac802154_llsec_get_params(struct mac802154_llsec *sec,
	68	struct ieee802154_llsec_params *params);
	69	int mac802154_llsec_set_params(struct mac802154_llsec *sec,
	70	const struct ieee802154_llsec_params *params,
	71	int changed);
	72
	73	int mac802154_llsec_key_add(struct mac802154_llsec *sec,
	74	const struct ieee802154_llsec_key_id *id,
	75	const struct ieee802154_llsec_key *key);
	76	int mac802154_llsec_key_del(struct mac802154_llsec *sec,
	77	const struct ieee802154_llsec_key_id *key);
	78
	79	int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
	80	const struct ieee802154_llsec_device *dev);
	81	int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
	82	__le64 device_addr);
	83
	84	int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
	85	__le64 dev_addr,
	86	const struct ieee802154_llsec_device_key *key);
	87	int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
	88	__le64 dev_addr,
89	const struct ieee802154_llsec_device_key *key);
90
91	int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
92	const struct ieee802154_llsec_seclevel *sl);
93	int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
94	const struct ieee802154_llsec_seclevel *sl);
95
03556e4d	96	int mac802154_llsec_encrypt(struct mac802154_llsec sec, struct sk_buff skb);
4c14a2fb	97	int mac802154_llsec_decrypt(struct mac802154_llsec sec, struct sk_buff skb);
03556e4d	98
5d637d5a	99	#endif /* MAC802154_LLSEC_H */