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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Cryptographic API.
4 *
5 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
7 */
8#ifndef _CRYPTO_INTERNAL_H
9#define _CRYPTO_INTERNAL_H
10
11#include <crypto/algapi.h>
12#include <linux/completion.h>
13#include <linux/mm.h>
14#include <linux/highmem.h>
15#include <linux/interrupt.h>
16#include <linux/init.h>
17#include <linux/list.h>
18#include <linux/module.h>
19#include <linux/kernel.h>
20#include <linux/notifier.h>
21#include <linux/rwsem.h>
22#include <linux/slab.h>
23
24struct crypto_instance;
25struct crypto_template;
26
27struct crypto_larval {
28 struct crypto_alg alg;
29 struct crypto_alg *adult;
30 struct completion completion;
31 u32 mask;
32};
33
34extern struct list_head crypto_alg_list;
35extern struct rw_semaphore crypto_alg_sem;
36extern struct blocking_notifier_head crypto_chain;
37
38#ifdef CONFIG_PROC_FS
39void __init crypto_init_proc(void);
40void __exit crypto_exit_proc(void);
41#else
42static inline void crypto_init_proc(void)
43{ }
44static inline void crypto_exit_proc(void)
45{ }
46#endif
47
48static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
49{
50 return alg->cra_ctxsize;
51}
52
53static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
54{
55 return alg->cra_ctxsize;
56}
57
58struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
59struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
60
61struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
62void crypto_larval_kill(struct crypto_alg *alg);
63void crypto_alg_tested(const char *name, int err);
64
65void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
66 struct crypto_alg *nalg);
67void crypto_remove_final(struct list_head *list);
68struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
69 u32 mask);
70void *crypto_create_tfm(struct crypto_alg *alg,
71 const struct crypto_type *frontend);
72struct crypto_alg *crypto_find_alg(const char *alg_name,
73 const struct crypto_type *frontend,
74 u32 type, u32 mask);
75void *crypto_alloc_tfm(const char *alg_name,
76 const struct crypto_type *frontend, u32 type, u32 mask);
77
78int crypto_probing_notify(unsigned long val, void *v);
79
80unsigned int crypto_alg_extsize(struct crypto_alg *alg);
81
82int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
83 u32 type, u32 mask);
84
85static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
86{
87 refcount_inc(&alg->cra_refcnt);
88 return alg;
89}
90
91static inline void crypto_alg_put(struct crypto_alg *alg)
92{
93 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
94 alg->cra_destroy(alg);
95}
96
97static inline int crypto_tmpl_get(struct crypto_template *tmpl)
98{
99 return try_module_get(tmpl->module);
100}
101
102static inline void crypto_tmpl_put(struct crypto_template *tmpl)
103{
104 module_put(tmpl->module);
105}
106
107static inline int crypto_is_larval(struct crypto_alg *alg)
108{
109 return alg->cra_flags & CRYPTO_ALG_LARVAL;
110}
111
112static inline int crypto_is_dead(struct crypto_alg *alg)
113{
114 return alg->cra_flags & CRYPTO_ALG_DEAD;
115}
116
117static inline int crypto_is_moribund(struct crypto_alg *alg)
118{
119 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
120}
121
122static inline void crypto_notify(unsigned long val, void *v)
123{
124 blocking_notifier_call_chain(&crypto_chain, val, v);
125}
126
127#endif /* _CRYPTO_INTERNAL_H */
128