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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 | ||
22 | extern enum km_type crypto_km_types[]; | |
23 | ||
24 | static inline enum km_type crypto_kmap_type(int out) | |
25 | { | |
26 | return crypto_km_types[(in_softirq() ? 2 : 0) + out]; | |
27 | } | |
28 | ||
29 | static inline void *crypto_kmap(struct page *page, int out) | |
30 | { | |
31 | return kmap_atomic(page, crypto_kmap_type(out)); | |
32 | } | |
33 | ||
34 | static inline void crypto_kunmap(void *vaddr, int out) | |
35 | { | |
36 | kunmap_atomic(vaddr, crypto_kmap_type(out)); | |
37 | } | |
38 | ||
39 | static inline void crypto_yield(struct crypto_tfm *tfm) | |
40 | { | |
15333038 | 41 | if (!in_atomic()) |
1da177e4 LT |
42 | cond_resched(); |
43 | } | |
44 | ||
45 | static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) | |
46 | { | |
47 | return (void *)&tfm[1]; | |
48 | } | |
49 | ||
50 | struct 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. */ | |
54 | static 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 | |
60 | int crypto_alloc_hmac_block(struct crypto_tfm *tfm); | |
61 | void crypto_free_hmac_block(struct crypto_tfm *tfm); | |
62 | #else | |
63 | static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm) | |
64 | { | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static inline void crypto_free_hmac_block(struct crypto_tfm *tfm) | |
69 | { } | |
70 | #endif | |
71 | ||
72 | #ifdef CONFIG_PROC_FS | |
73 | void __init crypto_init_proc(void); | |
74 | #else | |
75 | static inline void crypto_init_proc(void) | |
76 | { } | |
77 | #endif | |
78 | ||
79 | int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags); | |
80 | int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags); | |
81 | int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags); | |
82 | ||
83 | int crypto_init_digest_ops(struct crypto_tfm *tfm); | |
84 | int crypto_init_cipher_ops(struct crypto_tfm *tfm); | |
85 | int crypto_init_compress_ops(struct crypto_tfm *tfm); | |
86 | ||
87 | void crypto_exit_digest_ops(struct crypto_tfm *tfm); | |
88 | void crypto_exit_cipher_ops(struct crypto_tfm *tfm); | |
89 | void crypto_exit_compress_ops(struct crypto_tfm *tfm); | |
90 | ||
91 | #endif /* _CRYPTO_INTERNAL_H */ | |
92 |