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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);
73d3864a 86void crypto_alg_tested(const char *name, int err);
2825982d 87
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88void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
89 struct crypto_alg *nalg);
22e5b20b 90void crypto_remove_final(struct list_head *list);
6bfd4809 91void crypto_shoot_alg(struct crypto_alg *alg);
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92struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
93 u32 mask);
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94void *crypto_create_tfm(struct crypto_alg *alg,
95 const struct crypto_type *frontend);
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96struct crypto_alg *crypto_find_alg(const char *alg_name,
97 const struct crypto_type *frontend,
98 u32 type, u32 mask);
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99void *crypto_alloc_tfm(const char *alg_name,
100 const struct crypto_type *frontend, u32 type, u32 mask);
4cc7720c 101
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102int crypto_register_notifier(struct notifier_block *nb);
103int crypto_unregister_notifier(struct notifier_block *nb);
73d3864a 104int crypto_probing_notify(unsigned long val, void *v);
2825982d 105
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106static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
107{
108 atomic_inc(&alg->cra_refcnt);
109 return alg;
110}
111
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112static 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
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118static inline int crypto_tmpl_get(struct crypto_template *tmpl)
119{
120 return try_module_get(tmpl->module);
121}
122
123static inline void crypto_tmpl_put(struct crypto_template *tmpl)
124{
125 module_put(tmpl->module);
126}
127
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128static inline int crypto_is_larval(struct crypto_alg *alg)
129{
130 return alg->cra_flags & CRYPTO_ALG_LARVAL;
131}
132
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133static inline int crypto_is_dead(struct crypto_alg *alg)
134{
135 return alg->cra_flags & CRYPTO_ALG_DEAD;
136}
137
138static inline int crypto_is_moribund(struct crypto_alg *alg)
139{
140 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
141}
142
73d3864a 143static inline void crypto_notify(unsigned long val, void *v)
2825982d 144{
73d3864a 145 blocking_notifier_call_chain(&crypto_chain, val, v);
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146}
147
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148#endif /* _CRYPTO_INTERNAL_H */
149