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
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
38 struct crypto_instance;
39 struct crypto_template;
40
41 struct crypto_larval {
42 struct crypto_alg alg;
43 struct crypto_alg *adult;
44 struct completion completion;
45 u32 mask;
46 };
47
48 extern struct list_head crypto_alg_list;
49 extern struct rw_semaphore crypto_alg_sem;
50 extern struct blocking_notifier_head crypto_chain;
51
52 #ifdef CONFIG_PROC_FS
53 void __init crypto_init_proc(void);
54 void __exit crypto_exit_proc(void);
55 #else
56 static inline void crypto_init_proc(void)
57 { }
58 static inline void crypto_exit_proc(void)
59 { }
60 #endif
61
62 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg)
63 {
64 unsigned int len = alg->cra_ctxsize;
65
66 if (alg->cra_alignmask) {
67 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
68 len += alg->cra_digest.dia_digestsize;
69 }
70
71 return len;
72 }
73
74 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
75 {
76 return alg->cra_ctxsize;
77 }
78
79 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
80 {
81 return alg->cra_ctxsize;
82 }
83
84 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
85 struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, u32 mask);
86 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
87
88 int crypto_init_digest_ops(struct crypto_tfm *tfm);
89 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
90 int crypto_init_compress_ops(struct crypto_tfm *tfm);
91
92 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
93 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
94 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
95
96 void crypto_larval_kill(struct crypto_alg *alg);
97 struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
98 void crypto_larval_error(const char *name, u32 type, u32 mask);
99
100 void crypto_shoot_alg(struct crypto_alg *alg);
101 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
102 u32 mask);
103
104 int crypto_register_instance(struct crypto_template *tmpl,
105 struct crypto_instance *inst);
106
107 int crypto_register_notifier(struct notifier_block *nb);
108 int crypto_unregister_notifier(struct notifier_block *nb);
109
110 static inline void crypto_alg_put(struct crypto_alg *alg)
111 {
112 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
113 alg->cra_destroy(alg);
114 }
115
116 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
117 {
118 return try_module_get(tmpl->module);
119 }
120
121 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
122 {
123 module_put(tmpl->module);
124 }
125
126 static inline int crypto_is_larval(struct crypto_alg *alg)
127 {
128 return alg->cra_flags & CRYPTO_ALG_LARVAL;
129 }
130
131 static inline int crypto_is_dead(struct crypto_alg *alg)
132 {
133 return alg->cra_flags & CRYPTO_ALG_DEAD;
134 }
135
136 static inline int crypto_is_moribund(struct crypto_alg *alg)
137 {
138 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
139 }
140
141 static inline int crypto_notify(unsigned long val, void *v)
142 {
143 return blocking_notifier_call_chain(&crypto_chain, val, v);
144 }
145
146 #endif /* _CRYPTO_INTERNAL_H */
147
148
|
This page was automatically generated by the
LXR engine.
|