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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>
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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)
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10 * any later version.
11 *
12 */
13#ifndef _CRYPTO_INTERNAL_H
14#define _CRYPTO_INTERNAL_H
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15
16#include <crypto/algapi.h>
2825982d 17#include <linux/completion.h>
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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>
5b739ef8 28#include <linux/fips.h>
ccb778e1 29
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30/* Crypto notification events. */
31enum {
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
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39struct crypto_instance;
40struct crypto_template;
41
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42struct crypto_larval {
43 struct crypto_alg alg;
44 struct crypto_alg *adult;
45 struct completion completion;
492e2b63 46 u32 mask;
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47};
48
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49extern struct list_head crypto_alg_list;
50extern struct rw_semaphore crypto_alg_sem;
2825982d 51extern struct blocking_notifier_head crypto_chain;
5cb1454b 52
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53#ifdef CONFIG_PROC_FS
54void __init crypto_init_proc(void);
cce9e06d 55void __exit crypto_exit_proc(void);
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56#else
57static inline void crypto_init_proc(void)
58{ }
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59static inline void crypto_exit_proc(void)
60{ }
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61#endif
62
f1ddcaf3 63static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
fbdae9f3 64{
f1ddcaf3 65 return alg->cra_ctxsize;
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66}
67
f1ddcaf3 68static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
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69{
70 return alg->cra_ctxsize;
71}
72
2825982d 73struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
c51b6c81 74struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
492e2b63 75struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
2825982d 76
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77int crypto_init_cipher_ops(struct crypto_tfm *tfm);
78int crypto_init_compress_ops(struct crypto_tfm *tfm);
79
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80void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
81void crypto_exit_compress_ops(struct crypto_tfm *tfm);
82
73d3864a 83struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
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84void crypto_larval_kill(struct crypto_alg *alg);
85struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
492e2b63 86void crypto_larval_error(const char *name, u32 type, u32 mask);
73d3864a 87void crypto_alg_tested(const char *name, int err);
2825982d 88
6bfd4809 89void crypto_shoot_alg(struct crypto_alg *alg);
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90struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
91 u32 mask);
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92void *crypto_create_tfm(struct crypto_alg *alg,
93 const struct crypto_type *frontend);
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94struct crypto_alg *crypto_find_alg(const char *alg_name,
95 const struct crypto_type *frontend,
96 u32 type, u32 mask);
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97void *crypto_alloc_tfm(const char *alg_name,
98 const struct crypto_type *frontend, u32 type, u32 mask);
4cc7720c 99
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100int crypto_register_notifier(struct notifier_block *nb);
101int crypto_unregister_notifier(struct notifier_block *nb);
73d3864a 102int crypto_probing_notify(unsigned long val, void *v);
2825982d 103
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104static inline void crypto_alg_put(struct crypto_alg *alg)
105{
106 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
107 alg->cra_destroy(alg);
108}
109
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110static inline int crypto_tmpl_get(struct crypto_template *tmpl)
111{
112 return try_module_get(tmpl->module);
113}
114
115static inline void crypto_tmpl_put(struct crypto_template *tmpl)
116{
117 module_put(tmpl->module);
118}
119
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120static inline int crypto_is_larval(struct crypto_alg *alg)
121{
122 return alg->cra_flags & CRYPTO_ALG_LARVAL;
123}
124
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125static inline int crypto_is_dead(struct crypto_alg *alg)
126{
127 return alg->cra_flags & CRYPTO_ALG_DEAD;
128}
129
130static inline int crypto_is_moribund(struct crypto_alg *alg)
131{
132 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
133}
134
73d3864a 135static inline void crypto_notify(unsigned long val, void *v)
2825982d 136{
73d3864a 137 blocking_notifier_call_chain(&crypto_chain, val, v);
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138}
139
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140#endif /* _CRYPTO_INTERNAL_H */
141