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