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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2014 Fraunhofer ITWM
4 *
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>
14#include <linux/kref.h>
15#include <linux/spinlock.h>
16#include <net/af_ieee802154.h>
17#include <net/ieee802154_netdev.h>
18
19struct 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];
24 struct crypto_sync_skcipher *tfm0;
25
26 struct kref ref;
27};
28
29struct mac802154_llsec_device_key {
30 struct ieee802154_llsec_device_key devkey;
31
32 struct rcu_head rcu;
33};
34
35struct 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
47struct mac802154_llsec_seclevel {
48 struct ieee802154_llsec_seclevel level;
49
50 struct rcu_head rcu;
51};
52
53struct 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
64void mac802154_llsec_init(struct mac802154_llsec *sec);
65void mac802154_llsec_destroy(struct mac802154_llsec *sec);
66
67int mac802154_llsec_get_params(struct mac802154_llsec *sec,
68 struct ieee802154_llsec_params *params);
69int mac802154_llsec_set_params(struct mac802154_llsec *sec,
70 const struct ieee802154_llsec_params *params,
71 int changed);
72
73int mac802154_llsec_key_add(struct mac802154_llsec *sec,
74 const struct ieee802154_llsec_key_id *id,
75 const struct ieee802154_llsec_key *key);
76int mac802154_llsec_key_del(struct mac802154_llsec *sec,
77 const struct ieee802154_llsec_key_id *key);
78
79int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
80 const struct ieee802154_llsec_device *dev);
81int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
82 __le64 device_addr);
83
84int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
85 __le64 dev_addr,
86 const struct ieee802154_llsec_device_key *key);
87int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
88 __le64 dev_addr,
89 const struct ieee802154_llsec_device_key *key);
90
91int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
92 const struct ieee802154_llsec_seclevel *sl);
93int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
94 const struct ieee802154_llsec_seclevel *sl);
95
96int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
97int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
98
99#endif /* MAC802154_LLSEC_H */