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5b6d2d7f HX |
1 | /* |
2 | * AEAD: Authenticated Encryption with Associated Data | |
3 | * | |
b0d955ba | 4 | * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au> |
5b6d2d7f HX |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #ifndef _CRYPTO_INTERNAL_AEAD_H | |
14 | #define _CRYPTO_INTERNAL_AEAD_H | |
15 | ||
16 | #include <crypto/aead.h> | |
17 | #include <crypto/algapi.h> | |
f5d8660a | 18 | #include <linux/stddef.h> |
5b6d2d7f HX |
19 | #include <linux/types.h> |
20 | ||
21 | struct rtattr; | |
22 | ||
63293c61 | 23 | struct aead_instance { |
ba75e15f | 24 | void (*free)(struct aead_instance *inst); |
f5d8660a HX |
25 | union { |
26 | struct { | |
27 | char head[offsetof(struct aead_alg, base)]; | |
28 | struct crypto_instance base; | |
29 | } s; | |
30 | struct aead_alg alg; | |
31 | }; | |
63293c61 HX |
32 | }; |
33 | ||
5b6d2d7f HX |
34 | struct crypto_aead_spawn { |
35 | struct crypto_spawn base; | |
36 | }; | |
37 | ||
2c11a3f9 HX |
38 | struct aead_queue { |
39 | struct crypto_queue base; | |
40 | }; | |
41 | ||
5d1d65f8 HX |
42 | static inline void *crypto_aead_ctx(struct crypto_aead *tfm) |
43 | { | |
44 | return crypto_tfm_ctx(&tfm->base); | |
45 | } | |
46 | ||
63293c61 HX |
47 | static inline struct crypto_instance *aead_crypto_instance( |
48 | struct aead_instance *inst) | |
49 | { | |
50 | return container_of(&inst->alg.base, struct crypto_instance, alg); | |
51 | } | |
52 | ||
53 | static inline struct aead_instance *aead_instance(struct crypto_instance *inst) | |
54 | { | |
55 | return container_of(&inst->alg, struct aead_instance, alg.base); | |
56 | } | |
57 | ||
5c98d620 HX |
58 | static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead) |
59 | { | |
b0d955ba | 60 | return aead_instance(crypto_tfm_alg_instance(&aead->base)); |
5c98d620 HX |
61 | } |
62 | ||
63293c61 HX |
63 | static inline void *aead_instance_ctx(struct aead_instance *inst) |
64 | { | |
65 | return crypto_instance_ctx(aead_crypto_instance(inst)); | |
66 | } | |
67 | ||
5d1d65f8 HX |
68 | static inline void *aead_request_ctx(struct aead_request *req) |
69 | { | |
70 | return req->__ctx; | |
71 | } | |
72 | ||
73 | static inline void aead_request_complete(struct aead_request *req, int err) | |
74 | { | |
75 | req->base.complete(&req->base, err); | |
76 | } | |
77 | ||
78 | static inline u32 aead_request_flags(struct aead_request *req) | |
79 | { | |
80 | return req->base.flags; | |
81 | } | |
82 | ||
53a0bd71 TS |
83 | static inline struct aead_request *aead_request_cast( |
84 | struct crypto_async_request *req) | |
85 | { | |
86 | return container_of(req, struct aead_request, base); | |
87 | } | |
88 | ||
5b6d2d7f HX |
89 | static inline void crypto_set_aead_spawn( |
90 | struct crypto_aead_spawn *spawn, struct crypto_instance *inst) | |
91 | { | |
92 | crypto_set_spawn(&spawn->base, inst); | |
93 | } | |
94 | ||
d29ce988 HX |
95 | int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name, |
96 | u32 type, u32 mask); | |
97 | ||
5b6d2d7f HX |
98 | static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn) |
99 | { | |
100 | crypto_drop_spawn(&spawn->base); | |
101 | } | |
102 | ||
63293c61 HX |
103 | static inline struct aead_alg *crypto_spawn_aead_alg( |
104 | struct crypto_aead_spawn *spawn) | |
105 | { | |
106 | return container_of(spawn->base.alg, struct aead_alg, base); | |
107 | } | |
108 | ||
5b6d2d7f HX |
109 | static inline struct crypto_aead *crypto_spawn_aead( |
110 | struct crypto_aead_spawn *spawn) | |
111 | { | |
5d1d65f8 | 112 | return crypto_spawn_tfm2(&spawn->base); |
5b6d2d7f HX |
113 | } |
114 | ||
21b70134 HX |
115 | static inline void crypto_aead_set_reqsize(struct crypto_aead *aead, |
116 | unsigned int reqsize) | |
117 | { | |
b0d955ba | 118 | aead->reqsize = reqsize; |
21b70134 HX |
119 | } |
120 | ||
30e4c010 HX |
121 | static inline unsigned int crypto_aead_alg_maxauthsize(struct aead_alg *alg) |
122 | { | |
b0d955ba | 123 | return alg->maxauthsize; |
30e4c010 HX |
124 | } |
125 | ||
f5695259 HX |
126 | static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead) |
127 | { | |
30e4c010 | 128 | return crypto_aead_alg_maxauthsize(crypto_aead_alg(aead)); |
f5695259 HX |
129 | } |
130 | ||
2c11a3f9 HX |
131 | static inline void aead_init_queue(struct aead_queue *queue, |
132 | unsigned int max_qlen) | |
133 | { | |
134 | crypto_init_queue(&queue->base, max_qlen); | |
135 | } | |
136 | ||
137 | static inline int aead_enqueue_request(struct aead_queue *queue, | |
138 | struct aead_request *request) | |
139 | { | |
140 | return crypto_enqueue_request(&queue->base, &request->base); | |
141 | } | |
142 | ||
143 | static inline struct aead_request *aead_dequeue_request( | |
144 | struct aead_queue *queue) | |
145 | { | |
146 | struct crypto_async_request *req; | |
147 | ||
148 | req = crypto_dequeue_request(&queue->base); | |
149 | ||
150 | return req ? container_of(req, struct aead_request, base) : NULL; | |
151 | } | |
152 | ||
153 | static inline struct aead_request *aead_get_backlog(struct aead_queue *queue) | |
154 | { | |
155 | struct crypto_async_request *req; | |
156 | ||
157 | req = crypto_get_backlog(&queue->base); | |
158 | ||
159 | return req ? container_of(req, struct aead_request, base) : NULL; | |
160 | } | |
161 | ||
7a530aa9 HX |
162 | static inline unsigned int crypto_aead_alg_chunksize(struct aead_alg *alg) |
163 | { | |
164 | return alg->chunksize; | |
165 | } | |
166 | ||
167 | /** | |
168 | * crypto_aead_chunksize() - obtain chunk size | |
169 | * @tfm: cipher handle | |
170 | * | |
171 | * The block size is set to one for ciphers such as CCM. However, | |
172 | * you still need to provide incremental updates in multiples of | |
173 | * the underlying block size as the IV does not have sub-block | |
174 | * granularity. This is known in this API as the chunk size. | |
175 | * | |
176 | * Return: chunk size in bytes | |
177 | */ | |
178 | static inline unsigned int crypto_aead_chunksize(struct crypto_aead *tfm) | |
179 | { | |
180 | return crypto_aead_alg_chunksize(crypto_aead_alg(tfm)); | |
181 | } | |
182 | ||
63293c61 | 183 | int crypto_register_aead(struct aead_alg *alg); |
43615369 | 184 | void crypto_unregister_aead(struct aead_alg *alg); |
caab9461 HX |
185 | int crypto_register_aeads(struct aead_alg *algs, int count); |
186 | void crypto_unregister_aeads(struct aead_alg *algs, int count); | |
63293c61 HX |
187 | int aead_register_instance(struct crypto_template *tmpl, |
188 | struct aead_instance *inst); | |
189 | ||
5b6d2d7f HX |
190 | #endif /* _CRYPTO_INTERNAL_AEAD_H */ |
191 |