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1da177e4 LT |
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> | |
fbdae9f3 | 19 | #include <linux/kernel.h> |
1da177e4 LT |
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 | ||
1da177e4 LT |
45 | #ifdef CONFIG_CRYPTO_HMAC |
46 | int crypto_alloc_hmac_block(struct crypto_tfm *tfm); | |
47 | void crypto_free_hmac_block(struct crypto_tfm *tfm); | |
48 | #else | |
49 | static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm) | |
50 | { | |
51 | return 0; | |
52 | } | |
53 | ||
54 | static inline void crypto_free_hmac_block(struct crypto_tfm *tfm) | |
55 | { } | |
56 | #endif | |
57 | ||
58 | #ifdef CONFIG_PROC_FS | |
59 | void __init crypto_init_proc(void); | |
60 | #else | |
61 | static inline void crypto_init_proc(void) | |
62 | { } | |
63 | #endif | |
64 | ||
fbdae9f3 HX |
65 | static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg, |
66 | int flags) | |
67 | { | |
68 | return alg->cra_ctxsize; | |
69 | } | |
70 | ||
71 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg, | |
72 | int flags) | |
73 | { | |
74 | unsigned int len = alg->cra_ctxsize; | |
75 | ||
76 | switch (flags & CRYPTO_TFM_MODE_MASK) { | |
77 | case CRYPTO_TFM_MODE_CBC: | |
9d853c37 | 78 | len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1); |
fbdae9f3 HX |
79 | len += alg->cra_blocksize; |
80 | break; | |
81 | } | |
82 | ||
83 | return len; | |
84 | } | |
85 | ||
86 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg, | |
87 | int flags) | |
88 | { | |
89 | return alg->cra_ctxsize; | |
90 | } | |
91 | ||
1da177e4 LT |
92 | int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags); |
93 | int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags); | |
94 | int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags); | |
95 | ||
96 | int crypto_init_digest_ops(struct crypto_tfm *tfm); | |
97 | int crypto_init_cipher_ops(struct crypto_tfm *tfm); | |
98 | int crypto_init_compress_ops(struct crypto_tfm *tfm); | |
99 | ||
100 | void crypto_exit_digest_ops(struct crypto_tfm *tfm); | |
101 | void crypto_exit_cipher_ops(struct crypto_tfm *tfm); | |
102 | void crypto_exit_compress_ops(struct crypto_tfm *tfm); | |
103 | ||
104 | #endif /* _CRYPTO_INTERNAL_H */ | |
105 |