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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};
34
35struct crypto_instance;
36struct crypto_template;
37
38struct crypto_larval {
39 struct crypto_alg alg;
40 struct crypto_alg *adult;
41 struct completion completion;
42 u32 mask;
43};
44
45extern struct list_head crypto_alg_list;
46extern struct rw_semaphore crypto_alg_sem;
47extern struct blocking_notifier_head crypto_chain;
48
49#ifdef CONFIG_PROC_FS
50void __init crypto_init_proc(void);
51void __exit crypto_exit_proc(void);
52#else
53static inline void crypto_init_proc(void)
54{ }
55static inline void crypto_exit_proc(void)
56{ }
57#endif
58
59static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
60{
61 return alg->cra_ctxsize;
62}
63
64static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
65{
66 return alg->cra_ctxsize;
67}
68
69struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
70struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
71
72int crypto_init_cipher_ops(struct crypto_tfm *tfm);
73int crypto_init_compress_ops(struct crypto_tfm *tfm);
74
75struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
76void crypto_larval_kill(struct crypto_alg *alg);
77void crypto_alg_tested(const char *name, int err);
78
79void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
80 struct crypto_alg *nalg);
81void crypto_remove_final(struct list_head *list);
82void crypto_shoot_alg(struct crypto_alg *alg);
83struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
84 u32 mask);
85void *crypto_create_tfm(struct crypto_alg *alg,
86 const struct crypto_type *frontend);
87struct crypto_alg *crypto_find_alg(const char *alg_name,
88 const struct crypto_type *frontend,
89 u32 type, u32 mask);
90void *crypto_alloc_tfm(const char *alg_name,
91 const struct crypto_type *frontend, u32 type, u32 mask);
92
93int crypto_register_notifier(struct notifier_block *nb);
94int crypto_unregister_notifier(struct notifier_block *nb);
95int crypto_probing_notify(unsigned long val, void *v);
96
97unsigned int crypto_alg_extsize(struct crypto_alg *alg);
98
99int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
100 u32 type, u32 mask);
101
102static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
103{
104 refcount_inc(&alg->cra_refcnt);
105 return alg;
106}
107
108static inline void crypto_alg_put(struct crypto_alg *alg)
109{
110 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
111 alg->cra_destroy(alg);
112}
113
114static inline int crypto_tmpl_get(struct crypto_template *tmpl)
115{
116 return try_module_get(tmpl->module);
117}
118
119static inline void crypto_tmpl_put(struct crypto_template *tmpl)
120{
121 module_put(tmpl->module);
122}
123
124static inline int crypto_is_larval(struct crypto_alg *alg)
125{
126 return alg->cra_flags & CRYPTO_ALG_LARVAL;
127}
128
129static inline int crypto_is_dead(struct crypto_alg *alg)
130{
131 return alg->cra_flags & CRYPTO_ALG_DEAD;
132}
133
134static inline int crypto_is_moribund(struct crypto_alg *alg)
135{
136 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
137}
138
139static inline void crypto_notify(unsigned long val, void *v)
140{
141 blocking_notifier_call_chain(&crypto_chain, val, v);
142}
143
144#endif /* _CRYPTO_INTERNAL_H */
145
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#include <linux/fips.h>
29
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
39struct crypto_instance;
40struct crypto_template;
41
42struct crypto_larval {
43 struct crypto_alg alg;
44 struct crypto_alg *adult;
45 struct completion completion;
46 u32 mask;
47};
48
49extern struct list_head crypto_alg_list;
50extern struct rw_semaphore crypto_alg_sem;
51extern struct blocking_notifier_head crypto_chain;
52
53#ifdef CONFIG_PROC_FS
54void __init crypto_init_proc(void);
55void __exit crypto_exit_proc(void);
56#else
57static inline void crypto_init_proc(void)
58{ }
59static inline void crypto_exit_proc(void)
60{ }
61#endif
62
63static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
64{
65 return alg->cra_ctxsize;
66}
67
68static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
69{
70 return alg->cra_ctxsize;
71}
72
73struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
74struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask);
75struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
76
77int crypto_init_cipher_ops(struct crypto_tfm *tfm);
78int crypto_init_compress_ops(struct crypto_tfm *tfm);
79
80void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
81void crypto_exit_compress_ops(struct crypto_tfm *tfm);
82
83struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
84void crypto_larval_kill(struct crypto_alg *alg);
85struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask);
86void crypto_larval_error(const char *name, u32 type, u32 mask);
87void crypto_alg_tested(const char *name, int err);
88
89void crypto_shoot_alg(struct crypto_alg *alg);
90struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
91 u32 mask);
92void *crypto_create_tfm(struct crypto_alg *alg,
93 const struct crypto_type *frontend);
94struct crypto_alg *crypto_find_alg(const char *alg_name,
95 const struct crypto_type *frontend,
96 u32 type, u32 mask);
97void *crypto_alloc_tfm(const char *alg_name,
98 const struct crypto_type *frontend, u32 type, u32 mask);
99
100int crypto_register_notifier(struct notifier_block *nb);
101int crypto_unregister_notifier(struct notifier_block *nb);
102int crypto_probing_notify(unsigned long val, void *v);
103
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
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
120static inline int crypto_is_larval(struct crypto_alg *alg)
121{
122 return alg->cra_flags & CRYPTO_ALG_LARVAL;
123}
124
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
135static inline void crypto_notify(unsigned long val, void *v)
136{
137 blocking_notifier_call_chain(&crypto_chain, val, v);
138}
139
140#endif /* _CRYPTO_INTERNAL_H */
141