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1da177e4 LT |
1 | /* |
2 | * Cryptographic API. | |
3 | * | |
4 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
5cb1454b | 5 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
269ab459 | 9 | * Software Foundation; either version 2 of the License, or (at your option) |
1da177e4 LT |
10 | * any later version. |
11 | * | |
12 | */ | |
13 | #ifndef _CRYPTO_INTERNAL_H | |
14 | #define _CRYPTO_INTERNAL_H | |
cce9e06d HX |
15 | |
16 | #include <crypto/algapi.h> | |
2825982d | 17 | #include <linux/completion.h> |
1da177e4 LT |
18 | #include <linux/mm.h> |
19 | #include <linux/highmem.h> | |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/init.h> | |
5cb1454b | 22 | #include <linux/list.h> |
4cc7720c | 23 | #include <linux/module.h> |
fbdae9f3 | 24 | #include <linux/kernel.h> |
2825982d | 25 | #include <linux/notifier.h> |
5cb1454b | 26 | #include <linux/rwsem.h> |
64baf3cf | 27 | #include <linux/slab.h> |
ccb778e1 | 28 | |
2825982d HX |
29 | /* Crypto notification events. */ |
30 | enum { | |
31 | CRYPTO_MSG_ALG_REQUEST, | |
32 | CRYPTO_MSG_ALG_REGISTER, | |
33 | CRYPTO_MSG_ALG_UNREGISTER, | |
34 | CRYPTO_MSG_TMPL_REGISTER, | |
35 | CRYPTO_MSG_TMPL_UNREGISTER, | |
36 | }; | |
37 | ||
4cc7720c HX |
38 | struct crypto_instance; |
39 | struct crypto_template; | |
40 | ||
2825982d HX |
41 | struct crypto_larval { |
42 | struct crypto_alg alg; | |
43 | struct crypto_alg *adult; | |
44 | struct completion completion; | |
492e2b63 | 45 | u32 mask; |
2825982d HX |
46 | }; |
47 | ||
5cb1454b HX |
48 | extern struct list_head crypto_alg_list; |
49 | extern struct rw_semaphore crypto_alg_sem; | |
2825982d | 50 | extern struct blocking_notifier_head crypto_chain; |
5cb1454b | 51 | |
1da177e4 LT |
52 | #ifdef CONFIG_PROC_FS |
53 | void __init crypto_init_proc(void); | |
cce9e06d | 54 | void __exit crypto_exit_proc(void); |
1da177e4 LT |
55 | #else |
56 | static inline void crypto_init_proc(void) | |
57 | { } | |
cce9e06d HX |
58 | static inline void crypto_exit_proc(void) |
59 | { } | |
1da177e4 LT |
60 | #endif |
61 | ||
f1ddcaf3 | 62 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg) |
fbdae9f3 | 63 | { |
f1ddcaf3 | 64 | return alg->cra_ctxsize; |
fbdae9f3 HX |
65 | } |
66 | ||
f1ddcaf3 | 67 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg) |
fbdae9f3 HX |
68 | { |
69 | return alg->cra_ctxsize; | |
70 | } | |
71 | ||
2825982d | 72 | struct crypto_alg *crypto_mod_get(struct crypto_alg *alg); |
c51b6c81 | 73 | struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask); |
492e2b63 | 74 | struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask); |
2825982d | 75 | |
1da177e4 LT |
76 | int crypto_init_cipher_ops(struct crypto_tfm *tfm); |
77 | int crypto_init_compress_ops(struct crypto_tfm *tfm); | |
78 | ||
73d3864a | 79 | struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask); |
b9c55aa4 HX |
80 | void crypto_larval_kill(struct crypto_alg *alg); |
81 | struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask); | |
73d3864a | 82 | void crypto_alg_tested(const char *name, int err); |
2825982d | 83 | |
89b596ba SK |
84 | void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list, |
85 | struct crypto_alg *nalg); | |
22e5b20b | 86 | void crypto_remove_final(struct list_head *list); |
6bfd4809 | 87 | void crypto_shoot_alg(struct crypto_alg *alg); |
27d2a330 HX |
88 | struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, |
89 | u32 mask); | |
3f683d61 HX |
90 | void *crypto_create_tfm(struct crypto_alg *alg, |
91 | const struct crypto_type *frontend); | |
d06854f0 HX |
92 | struct crypto_alg *crypto_find_alg(const char *alg_name, |
93 | const struct crypto_type *frontend, | |
94 | u32 type, u32 mask); | |
3f683d61 HX |
95 | void *crypto_alloc_tfm(const char *alg_name, |
96 | const struct crypto_type *frontend, u32 type, u32 mask); | |
4cc7720c | 97 | |
2825982d HX |
98 | int crypto_register_notifier(struct notifier_block *nb); |
99 | int crypto_unregister_notifier(struct notifier_block *nb); | |
73d3864a | 100 | int crypto_probing_notify(unsigned long val, void *v); |
2825982d | 101 | |
38d21433 HX |
102 | unsigned int crypto_alg_extsize(struct crypto_alg *alg); |
103 | ||
f2aefdab HX |
104 | int crypto_type_has_alg(const char *name, const struct crypto_type *frontend, |
105 | u32 type, u32 mask); | |
106 | ||
939e1779 HX |
107 | static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg) |
108 | { | |
109 | atomic_inc(&alg->cra_refcnt); | |
110 | return alg; | |
111 | } | |
112 | ||
6bfd4809 HX |
113 | static inline void crypto_alg_put(struct crypto_alg *alg) |
114 | { | |
115 | if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy) | |
116 | alg->cra_destroy(alg); | |
117 | } | |
118 | ||
4cc7720c HX |
119 | static inline int crypto_tmpl_get(struct crypto_template *tmpl) |
120 | { | |
121 | return try_module_get(tmpl->module); | |
122 | } | |
123 | ||
124 | static inline void crypto_tmpl_put(struct crypto_template *tmpl) | |
125 | { | |
126 | module_put(tmpl->module); | |
127 | } | |
128 | ||
2825982d HX |
129 | static inline int crypto_is_larval(struct crypto_alg *alg) |
130 | { | |
131 | return alg->cra_flags & CRYPTO_ALG_LARVAL; | |
132 | } | |
133 | ||
6bfd4809 HX |
134 | static inline int crypto_is_dead(struct crypto_alg *alg) |
135 | { | |
136 | return alg->cra_flags & CRYPTO_ALG_DEAD; | |
137 | } | |
138 | ||
139 | static inline int crypto_is_moribund(struct crypto_alg *alg) | |
140 | { | |
141 | return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING); | |
142 | } | |
143 | ||
73d3864a | 144 | static inline void crypto_notify(unsigned long val, void *v) |
2825982d | 145 | { |
73d3864a | 146 | blocking_notifier_call_chain(&crypto_chain, val, v); |
2825982d HX |
147 | } |
148 | ||
1da177e4 LT |
149 | #endif /* _CRYPTO_INTERNAL_H */ |
150 |