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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);
68void crypto_shoot_alg(struct crypto_alg *alg);
69struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
70 u32 mask);
71void *crypto_create_tfm(struct crypto_alg *alg,
72 const struct crypto_type *frontend);
73struct crypto_alg *crypto_find_alg(const char *alg_name,
74 const struct crypto_type *frontend,
75 u32 type, u32 mask);
76void *crypto_alloc_tfm(const char *alg_name,
77 const struct crypto_type *frontend, u32 type, u32 mask);
78
79int crypto_probing_notify(unsigned long val, void *v);
80
81unsigned int crypto_alg_extsize(struct crypto_alg *alg);
82
83int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
84 u32 type, u32 mask);
85
86static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
87{
88 refcount_inc(&alg->cra_refcnt);
89 return alg;
90}
91
92static inline void crypto_alg_put(struct crypto_alg *alg)
93{
94 if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
95 alg->cra_destroy(alg);
96}
97
98static inline int crypto_tmpl_get(struct crypto_template *tmpl)
99{
100 return try_module_get(tmpl->module);
101}
102
103static inline void crypto_tmpl_put(struct crypto_template *tmpl)
104{
105 module_put(tmpl->module);
106}
107
108static inline int crypto_is_larval(struct crypto_alg *alg)
109{
110 return alg->cra_flags & CRYPTO_ALG_LARVAL;
111}
112
113static inline int crypto_is_dead(struct crypto_alg *alg)
114{
115 return alg->cra_flags & CRYPTO_ALG_DEAD;
116}
117
118static inline int crypto_is_moribund(struct crypto_alg *alg)
119{
120 return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
121}
122
123static inline void crypto_notify(unsigned long val, void *v)
124{
125 blocking_notifier_call_chain(&crypto_chain, val, v);
126}
127
128#endif /* _CRYPTO_INTERNAL_H */
129