Linux kernel mirror (for testing)
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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. */
30enum {
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
38struct crypto_instance;
39struct crypto_template;
40
41struct crypto_larval {
42 struct crypto_alg alg;
43 struct crypto_alg *adult;
44 struct completion completion;
45 u32 mask;
46};
47
48extern struct list_head crypto_alg_list;
49extern struct rw_semaphore crypto_alg_sem;
50extern struct blocking_notifier_head crypto_chain;
51
52#ifdef CONFIG_PROC_FS
53void __init crypto_init_proc(void);
54void __exit crypto_exit_proc(void);
55#else
56static inline void crypto_init_proc(void)
57{ }
58static inline void crypto_exit_proc(void)
59{ }
60#endif
61
62static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
63{
64 return alg->cra_ctxsize;
65}
66
67static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
68{
69 return alg->cra_ctxsize;
70}
71
72struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
73struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
74struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
75
76int crypto_init_cipher_ops(struct crypto_tfm *tfm);
77int crypto_init_compress_ops(struct crypto_tfm *tfm);
78
79void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
80void crypto_exit_compress_ops(struct crypto_tfm *tfm);
81
82struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
83void crypto_larval_kill(struct crypto_alg *alg);
84struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
85void crypto_alg_tested(const char *name, int err);
86
87void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
88 struct crypto_alg *nalg);
89void crypto_remove_final(struct list_head *list);
90void crypto_shoot_alg(struct crypto_alg *alg);
91struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
92 u32 mask);
93void *crypto_create_tfm(struct crypto_alg *alg,
94 const struct crypto_type *frontend);
95struct crypto_alg *crypto_find_alg(const char *alg_name,
96 const struct crypto_type *frontend,
97 u32 type, u32 mask);
98void *crypto_alloc_tfm(const char *alg_name,
99 const struct crypto_type *frontend, u32 type, u32 mask);
100
101int crypto_register_notifier(struct notifier_block *nb);
102int crypto_unregister_notifier(struct notifier_block *nb);
103int crypto_probing_notify(unsigned long val, void *v);
104
105unsigned int crypto_alg_extsize(struct crypto_alg *alg);
106
107static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
108{
109 atomic_inc(&alg->cra_refcnt);
110 return alg;
111}
112
113static inline void crypto_alg_put(struct crypto_alg *alg)
114{
115 if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
116 alg->cra_destroy(alg);
117}
118
119static inline int crypto_tmpl_get(struct crypto_template *tmpl)
120{
121 return try_module_get(tmpl->module);
122}
123
124static inline void crypto_tmpl_put(struct crypto_template *tmpl)
125{
126 module_put(tmpl->module);
127}
128
129static inline int crypto_is_larval(struct crypto_alg *alg)
130{
131 return alg->cra_flags & CRYPTO_ALG_LARVAL;
132}
133
134static inline int crypto_is_dead(struct crypto_alg *alg)
135{
136 return alg->cra_flags & CRYPTO_ALG_DEAD;
137}
138
139static inline int crypto_is_moribund(struct crypto_alg *alg)
140{
141 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
142}
143
144static inline void crypto_notify(unsigned long val, void *v)
145{
146 blocking_notifier_call_chain(&crypto_chain, val, v);
147}
148
149#endif /* _CRYPTO_INTERNAL_H */
150