Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Cryptographic API.
3 *
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 */
12#ifndef _CRYPTO_INTERNAL_H
13#define _CRYPTO_INTERNAL_H
14#include <linux/crypto.h>
15#include <linux/mm.h>
16#include <linux/highmem.h>
17#include <linux/interrupt.h>
18#include <linux/init.h>
19#include <linux/kmod.h>
20#include <asm/kmap_types.h>
21
22extern enum km_type crypto_km_types[];
23
24static inline enum km_type crypto_kmap_type(int out)
25{
26 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
27}
28
29static inline void *crypto_kmap(struct page *page, int out)
30{
31 return kmap_atomic(page, crypto_kmap_type(out));
32}
33
34static inline void crypto_kunmap(void *vaddr, int out)
35{
36 kunmap_atomic(vaddr, crypto_kmap_type(out));
37}
38
39static inline void crypto_yield(struct crypto_tfm *tfm)
40{
41 if (!in_softirq())
42 cond_resched();
43}
44
45static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
46{
47 return (void *)&tfm[1];
48}
49
50struct crypto_alg *crypto_alg_lookup(const char *name);
51
52/* A far more intelligent version of this is planned. For now, just
53 * try an exact match on the name of the algorithm. */
54static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
55{
56 return try_then_request_module(crypto_alg_lookup(name), name);
57}
58
59#ifdef CONFIG_CRYPTO_HMAC
60int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
61void crypto_free_hmac_block(struct crypto_tfm *tfm);
62#else
63static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
64{
65 return 0;
66}
67
68static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
69{ }
70#endif
71
72#ifdef CONFIG_PROC_FS
73void __init crypto_init_proc(void);
74#else
75static inline void crypto_init_proc(void)
76{ }
77#endif
78
79int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
80int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
81int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
82
83int crypto_init_digest_ops(struct crypto_tfm *tfm);
84int crypto_init_cipher_ops(struct crypto_tfm *tfm);
85int crypto_init_compress_ops(struct crypto_tfm *tfm);
86
87void crypto_exit_digest_ops(struct crypto_tfm *tfm);
88void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
89void crypto_exit_compress_ops(struct crypto_tfm *tfm);
90
91#endif /* _CRYPTO_INTERNAL_H */
92