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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * AEAD: Authenticated Encryption with Associated Data
4 *
5 * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
6 */
7
8#ifndef _CRYPTO_INTERNAL_AEAD_H
9#define _CRYPTO_INTERNAL_AEAD_H
10
11#include <crypto/aead.h>
12#include <crypto/algapi.h>
13#include <linux/stddef.h>
14#include <linux/types.h>
15
16struct rtattr;
17
18struct aead_instance {
19 void (*free)(struct aead_instance *inst);
20 union {
21 struct {
22 char head[offsetof(struct aead_alg, base)];
23 struct crypto_instance base;
24 } s;
25 struct aead_alg alg;
26 };
27};
28
29struct crypto_aead_spawn {
30 struct crypto_spawn base;
31};
32
33struct aead_queue {
34 struct crypto_queue base;
35};
36
37static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
38{
39 return crypto_tfm_ctx(&tfm->base);
40}
41
42static inline struct crypto_instance *aead_crypto_instance(
43 struct aead_instance *inst)
44{
45 return container_of(&inst->alg.base, struct crypto_instance, alg);
46}
47
48static inline struct aead_instance *aead_instance(struct crypto_instance *inst)
49{
50 return container_of(&inst->alg, struct aead_instance, alg.base);
51}
52
53static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead)
54{
55 return aead_instance(crypto_tfm_alg_instance(&aead->base));
56}
57
58static inline void *aead_instance_ctx(struct aead_instance *inst)
59{
60 return crypto_instance_ctx(aead_crypto_instance(inst));
61}
62
63static inline void *aead_request_ctx(struct aead_request *req)
64{
65 return req->__ctx;
66}
67
68static inline void aead_request_complete(struct aead_request *req, int err)
69{
70 req->base.complete(&req->base, err);
71}
72
73static inline u32 aead_request_flags(struct aead_request *req)
74{
75 return req->base.flags;
76}
77
78static inline struct aead_request *aead_request_cast(
79 struct crypto_async_request *req)
80{
81 return container_of(req, struct aead_request, base);
82}
83
84static inline void crypto_set_aead_spawn(
85 struct crypto_aead_spawn *spawn, struct crypto_instance *inst)
86{
87 crypto_set_spawn(&spawn->base, inst);
88}
89
90int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
91 u32 type, u32 mask);
92
93static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
94{
95 crypto_drop_spawn(&spawn->base);
96}
97
98static inline struct aead_alg *crypto_spawn_aead_alg(
99 struct crypto_aead_spawn *spawn)
100{
101 return container_of(spawn->base.alg, struct aead_alg, base);
102}
103
104static inline struct crypto_aead *crypto_spawn_aead(
105 struct crypto_aead_spawn *spawn)
106{
107 return crypto_spawn_tfm2(&spawn->base);
108}
109
110static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
111 unsigned int reqsize)
112{
113 aead->reqsize = reqsize;
114}
115
116static inline unsigned int crypto_aead_alg_maxauthsize(struct aead_alg *alg)
117{
118 return alg->maxauthsize;
119}
120
121static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead)
122{
123 return crypto_aead_alg_maxauthsize(crypto_aead_alg(aead));
124}
125
126static inline void aead_init_queue(struct aead_queue *queue,
127 unsigned int max_qlen)
128{
129 crypto_init_queue(&queue->base, max_qlen);
130}
131
132static inline int aead_enqueue_request(struct aead_queue *queue,
133 struct aead_request *request)
134{
135 return crypto_enqueue_request(&queue->base, &request->base);
136}
137
138static inline struct aead_request *aead_dequeue_request(
139 struct aead_queue *queue)
140{
141 struct crypto_async_request *req;
142
143 req = crypto_dequeue_request(&queue->base);
144
145 return req ? container_of(req, struct aead_request, base) : NULL;
146}
147
148static inline struct aead_request *aead_get_backlog(struct aead_queue *queue)
149{
150 struct crypto_async_request *req;
151
152 req = crypto_get_backlog(&queue->base);
153
154 return req ? container_of(req, struct aead_request, base) : NULL;
155}
156
157static inline unsigned int crypto_aead_alg_chunksize(struct aead_alg *alg)
158{
159 return alg->chunksize;
160}
161
162/**
163 * crypto_aead_chunksize() - obtain chunk size
164 * @tfm: cipher handle
165 *
166 * The block size is set to one for ciphers such as CCM. However,
167 * you still need to provide incremental updates in multiples of
168 * the underlying block size as the IV does not have sub-block
169 * granularity. This is known in this API as the chunk size.
170 *
171 * Return: chunk size in bytes
172 */
173static inline unsigned int crypto_aead_chunksize(struct crypto_aead *tfm)
174{
175 return crypto_aead_alg_chunksize(crypto_aead_alg(tfm));
176}
177
178int crypto_register_aead(struct aead_alg *alg);
179void crypto_unregister_aead(struct aead_alg *alg);
180int crypto_register_aeads(struct aead_alg *algs, int count);
181void crypto_unregister_aeads(struct aead_alg *algs, int count);
182int aead_register_instance(struct crypto_template *tmpl,
183 struct aead_instance *inst);
184
185#endif /* _CRYPTO_INTERNAL_AEAD_H */
186
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * AEAD: Authenticated Encryption with Associated Data
4 *
5 * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
6 */
7
8#ifndef _CRYPTO_INTERNAL_AEAD_H
9#define _CRYPTO_INTERNAL_AEAD_H
10
11#include <crypto/aead.h>
12#include <crypto/algapi.h>
13#include <linux/stddef.h>
14#include <linux/types.h>
15
16struct rtattr;
17
18struct aead_instance {
19 void (*free)(struct aead_instance *inst);
20 union {
21 struct {
22 char head[offsetof(struct aead_alg, base)];
23 struct crypto_instance base;
24 } s;
25 struct aead_alg alg;
26 };
27};
28
29struct crypto_aead_spawn {
30 struct crypto_spawn base;
31};
32
33struct aead_queue {
34 struct crypto_queue base;
35};
36
37static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
38{
39 return crypto_tfm_ctx(&tfm->base);
40}
41
42static inline struct crypto_instance *aead_crypto_instance(
43 struct aead_instance *inst)
44{
45 return container_of(&inst->alg.base, struct crypto_instance, alg);
46}
47
48static inline struct aead_instance *aead_instance(struct crypto_instance *inst)
49{
50 return container_of(&inst->alg, struct aead_instance, alg.base);
51}
52
53static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead)
54{
55 return aead_instance(crypto_tfm_alg_instance(&aead->base));
56}
57
58static inline void *aead_instance_ctx(struct aead_instance *inst)
59{
60 return crypto_instance_ctx(aead_crypto_instance(inst));
61}
62
63static inline void *aead_request_ctx(struct aead_request *req)
64{
65 return req->__ctx;
66}
67
68static inline void aead_request_complete(struct aead_request *req, int err)
69{
70 req->base.complete(&req->base, err);
71}
72
73static inline u32 aead_request_flags(struct aead_request *req)
74{
75 return req->base.flags;
76}
77
78static inline struct aead_request *aead_request_cast(
79 struct crypto_async_request *req)
80{
81 return container_of(req, struct aead_request, base);
82}
83
84int crypto_grab_aead(struct crypto_aead_spawn *spawn,
85 struct crypto_instance *inst,
86 const char *name, u32 type, u32 mask);
87
88static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
89{
90 crypto_drop_spawn(&spawn->base);
91}
92
93static inline struct aead_alg *crypto_spawn_aead_alg(
94 struct crypto_aead_spawn *spawn)
95{
96 return container_of(spawn->base.alg, struct aead_alg, base);
97}
98
99static inline struct crypto_aead *crypto_spawn_aead(
100 struct crypto_aead_spawn *spawn)
101{
102 return crypto_spawn_tfm2(&spawn->base);
103}
104
105static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
106 unsigned int reqsize)
107{
108 aead->reqsize = reqsize;
109}
110
111static inline void aead_init_queue(struct aead_queue *queue,
112 unsigned int max_qlen)
113{
114 crypto_init_queue(&queue->base, max_qlen);
115}
116
117static inline int aead_enqueue_request(struct aead_queue *queue,
118 struct aead_request *request)
119{
120 return crypto_enqueue_request(&queue->base, &request->base);
121}
122
123static inline struct aead_request *aead_dequeue_request(
124 struct aead_queue *queue)
125{
126 struct crypto_async_request *req;
127
128 req = crypto_dequeue_request(&queue->base);
129
130 return req ? container_of(req, struct aead_request, base) : NULL;
131}
132
133static inline struct aead_request *aead_get_backlog(struct aead_queue *queue)
134{
135 struct crypto_async_request *req;
136
137 req = crypto_get_backlog(&queue->base);
138
139 return req ? container_of(req, struct aead_request, base) : NULL;
140}
141
142static inline unsigned int crypto_aead_alg_chunksize(struct aead_alg *alg)
143{
144 return alg->chunksize;
145}
146
147/**
148 * crypto_aead_chunksize() - obtain chunk size
149 * @tfm: cipher handle
150 *
151 * The block size is set to one for ciphers such as CCM. However,
152 * you still need to provide incremental updates in multiples of
153 * the underlying block size as the IV does not have sub-block
154 * granularity. This is known in this API as the chunk size.
155 *
156 * Return: chunk size in bytes
157 */
158static inline unsigned int crypto_aead_chunksize(struct crypto_aead *tfm)
159{
160 return crypto_aead_alg_chunksize(crypto_aead_alg(tfm));
161}
162
163int crypto_register_aead(struct aead_alg *alg);
164void crypto_unregister_aead(struct aead_alg *alg);
165int crypto_register_aeads(struct aead_alg *algs, int count);
166void crypto_unregister_aeads(struct aead_alg *algs, int count);
167int aead_register_instance(struct crypto_template *tmpl,
168 struct aead_instance *inst);
169
170#endif /* _CRYPTO_INTERNAL_AEAD_H */
171