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
29struct crypto_instance;
30struct crypto_template;
31
32struct crypto_larval {
33 struct crypto_alg alg;
34 struct crypto_alg *adult;
35 struct completion completion;
36 u32 mask;
37};
38
39extern struct list_head crypto_alg_list;
40extern struct rw_semaphore crypto_alg_sem;
41extern struct blocking_notifier_head crypto_chain;
42
43#ifdef CONFIG_PROC_FS
44void __init crypto_init_proc(void);
45void __exit crypto_exit_proc(void);
46#else
47static inline void crypto_init_proc(void)
48{ }
49static inline void crypto_exit_proc(void)
50{ }
51#endif
52
53static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
54{
55 return alg->cra_ctxsize;
56}
57
58static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
59{
60 return alg->cra_ctxsize;
61}
62
63struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
64struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
65
66int crypto_init_cipher_ops(struct crypto_tfm *tfm);
67int crypto_init_compress_ops(struct crypto_tfm *tfm);
68
69struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
70void crypto_larval_kill(struct crypto_alg *alg);
71void crypto_alg_tested(const char *name, int err);
72
73void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
74 struct crypto_alg *nalg);
75void crypto_remove_final(struct list_head *list);
76void crypto_shoot_alg(struct crypto_alg *alg);
77struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
78 u32 mask);
79void *crypto_create_tfm(struct crypto_alg *alg,
80 const struct crypto_type *frontend);
81struct crypto_alg *crypto_find_alg(const char *alg_name,
82 const struct crypto_type *frontend,
83 u32 type, u32 mask);
84void *crypto_alloc_tfm(const char *alg_name,
85 const struct crypto_type *frontend, u32 type, u32 mask);
86
87int crypto_probing_notify(unsigned long val, void *v);
88
89unsigned int crypto_alg_extsize(struct crypto_alg *alg);
90
91int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
92 u32 type, u32 mask);
93
94static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
95{
96 refcount_inc(&alg->cra_refcnt);
97 return alg;
98}
99
100static inline void crypto_alg_put(struct crypto_alg *alg)
101{
102 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
103 alg->cra_destroy(alg);
104}
105
106static inline int crypto_tmpl_get(struct crypto_template *tmpl)
107{
108 return try_module_get(tmpl->module);
109}
110
111static inline void crypto_tmpl_put(struct crypto_template *tmpl)
112{
113 module_put(tmpl->module);
114}
115
116static inline int crypto_is_larval(struct crypto_alg *alg)
117{
118 return alg->cra_flags & CRYPTO_ALG_LARVAL;
119}
120
121static inline int crypto_is_dead(struct crypto_alg *alg)
122{
123 return alg->cra_flags & CRYPTO_ALG_DEAD;
124}
125
126static inline int crypto_is_moribund(struct crypto_alg *alg)
127{
128 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
129}
130
131static inline void crypto_notify(unsigned long val, void *v)
132{
133 blocking_notifier_call_chain(&crypto_chain, val, v);
134}
135
136#endif /* _CRYPTO_INTERNAL_H */
137
138