tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_lookup(const char *name, u32 type, u32 mask);
71struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
72
73int crypto_init_cipher_ops(struct crypto_tfm *tfm);
74int crypto_init_compress_ops(struct crypto_tfm *tfm);
75
76struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
77void crypto_larval_kill(struct crypto_alg *alg);
78void crypto_alg_tested(const char *name, int err);
79
80void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
81 struct crypto_alg *nalg);
82void crypto_remove_final(struct list_head *list);
83void crypto_shoot_alg(struct crypto_alg *alg);
84struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
85 u32 mask);
86void *crypto_create_tfm(struct crypto_alg *alg,
87 const struct crypto_type *frontend);
88struct crypto_alg *crypto_find_alg(const char *alg_name,
89 const struct crypto_type *frontend,
90 u32 type, u32 mask);
91void *crypto_alloc_tfm(const char *alg_name,
92 const struct crypto_type *frontend, u32 type, u32 mask);
93
94int crypto_register_notifier(struct notifier_block *nb);
95int crypto_unregister_notifier(struct notifier_block *nb);
96int crypto_probing_notify(unsigned long val, void *v);
97
98unsigned int crypto_alg_extsize(struct crypto_alg *alg);
99
100int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
101 u32 type, u32 mask);
102
103static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
104{
105 refcount_inc(&alg->cra_refcnt);
106 return alg;
107}
108
109static inline void crypto_alg_put(struct crypto_alg *alg)
110{
111 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
112 alg->cra_destroy(alg);
113}
114
115static inline int crypto_tmpl_get(struct crypto_template *tmpl)
116{
117 return try_module_get(tmpl->module);
118}
119
120static inline void crypto_tmpl_put(struct crypto_template *tmpl)
121{
122 module_put(tmpl->module);
123}
124
125static inline int crypto_is_larval(struct crypto_alg *alg)
126{
127 return alg->cra_flags & CRYPTO_ALG_LARVAL;
128}
129
130static inline int crypto_is_dead(struct crypto_alg *alg)
131{
132 return alg->cra_flags & CRYPTO_ALG_DEAD;
133}
134
135static inline int crypto_is_moribund(struct crypto_alg *alg)
136{
137 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
138}
139
140static inline void crypto_notify(unsigned long val, void *v)
141{
142 blocking_notifier_call_chain(&crypto_chain, val, v);
143}
144
145#endif /* _CRYPTO_INTERNAL_H */
146