Linux kernel mirror (for testing)
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linux
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#ifdef CONFIG_CRYPTO_FIPS
30extern int fips_enabled;
31#else
32#define fips_enabled 0
33#endif
34
35/* Crypto notification events. */
36enum {
37 CRYPTO_MSG_ALG_REQUEST,
38 CRYPTO_MSG_ALG_REGISTER,
39 CRYPTO_MSG_ALG_UNREGISTER,
40 CRYPTO_MSG_TMPL_REGISTER,
41 CRYPTO_MSG_TMPL_UNREGISTER,
42};
43
44struct crypto_instance;
45struct crypto_template;
46
47struct crypto_larval {
48 struct crypto_alg alg;
49 struct crypto_alg *adult;
50 struct completion completion;
51 u32 mask;
52};
53
54extern struct list_head crypto_alg_list;
55extern struct rw_semaphore crypto_alg_sem;
56extern struct blocking_notifier_head crypto_chain;
57
58#ifdef CONFIG_PROC_FS
59void __init crypto_init_proc(void);
60void __exit crypto_exit_proc(void);
61#else
62static inline void crypto_init_proc(void)
63{ }
64static inline void crypto_exit_proc(void)
65{ }
66#endif
67
68static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg)
69{
70 unsigned int len = alg->cra_ctxsize;
71
72 if (alg->cra_alignmask) {
73 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
74 len += alg->cra_digest.dia_digestsize;
75 }
76
77 return len;
78}
79
80static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
81{
82 return alg->cra_ctxsize;
83}
84
85static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
86{
87 return alg->cra_ctxsize;
88}
89
90struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
91struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
92struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
93
94int crypto_init_digest_ops(struct crypto_tfm *tfm);
95int crypto_init_digest_ops_async(struct crypto_tfm *tfm);
96int crypto_init_cipher_ops(struct crypto_tfm *tfm);
97int crypto_init_compress_ops(struct crypto_tfm *tfm);
98
99void crypto_exit_digest_ops(struct crypto_tfm *tfm);
100void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
101void crypto_exit_compress_ops(struct crypto_tfm *tfm);
102
103struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
104void crypto_larval_kill(struct crypto_alg *alg);
105struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
106void crypto_larval_error(const char *name, u32 type, u32 mask);
107void crypto_alg_tested(const char *name, int err);
108
109void crypto_shoot_alg(struct crypto_alg *alg);
110struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
111 u32 mask);
112void *crypto_create_tfm(struct crypto_alg *alg,
113 const struct crypto_type *frontend);
114void *crypto_alloc_tfm(const char *alg_name,
115 const struct crypto_type *frontend, u32 type, u32 mask);
116
117int crypto_register_instance(struct crypto_template *tmpl,
118 struct crypto_instance *inst);
119
120int crypto_register_notifier(struct notifier_block *nb);
121int crypto_unregister_notifier(struct notifier_block *nb);
122int crypto_probing_notify(unsigned long val, void *v);
123
124int __init testmgr_init(void);
125void testmgr_exit(void);
126
127static inline void crypto_alg_put(struct crypto_alg *alg)
128{
129 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
130 alg->cra_destroy(alg);
131}
132
133static inline int crypto_tmpl_get(struct crypto_template *tmpl)
134{
135 return try_module_get(tmpl->module);
136}
137
138static inline void crypto_tmpl_put(struct crypto_template *tmpl)
139{
140 module_put(tmpl->module);
141}
142
143static inline int crypto_is_larval(struct crypto_alg *alg)
144{
145 return alg->cra_flags & CRYPTO_ALG_LARVAL;
146}
147
148static inline int crypto_is_dead(struct crypto_alg *alg)
149{
150 return alg->cra_flags & CRYPTO_ALG_DEAD;
151}
152
153static inline int crypto_is_moribund(struct crypto_alg *alg)
154{
155 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
156}
157
158static inline void crypto_notify(unsigned long val, void *v)
159{
160 blocking_notifier_call_chain(&crypto_chain, val, v);
161}
162
163#endif /* _CRYPTO_INTERNAL_H */
164