projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Cryptographic API. | |
| 3 | * | |
| 4 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
| 5cb1454b | 5 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
| 1da177e4 LT |
6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it | |
| 8 | * under the terms of the GNU General Public License as published by the Free | |
| 9 | * Software Foundation; either version 2 of the License, or (at your option) | |
| 10 | * any later version. | |
| 11 | * | |
| 12 | */ | |
| 13 | #ifndef _CRYPTO_INTERNAL_H | |
| 14 | #define _CRYPTO_INTERNAL_H | |
| cce9e06d HX |
15 | |
| 16 | #include <crypto/algapi.h> | |
| 1da177e4 LT |
17 | #include <linux/mm.h> |
| 18 | #include <linux/highmem.h> | |
| 19 | #include <linux/interrupt.h> | |
| 20 | #include <linux/init.h> | |
| 5cb1454b | 21 | #include <linux/list.h> |
| fbdae9f3 | 22 | #include <linux/kernel.h> |
| 5cb1454b | 23 | #include <linux/rwsem.h> |
| 64baf3cf | 24 | #include <linux/slab.h> |
| 1da177e4 LT |
25 | #include <asm/kmap_types.h> |
| 26 | ||
| 5cb1454b HX |
27 | extern struct list_head crypto_alg_list; |
| 28 | extern struct rw_semaphore crypto_alg_sem; | |
| 29 | ||
| 1da177e4 LT |
30 | extern enum km_type crypto_km_types[]; |
| 31 | ||
| 32 | static inline enum km_type crypto_kmap_type(int out) | |
| 33 | { | |
| 34 | return crypto_km_types[(in_softirq() ? 2 : 0) + out]; | |
| 35 | } | |
| 36 | ||
| 37 | static inline void *crypto_kmap(struct page *page, int out) | |
| 38 | { | |
| 39 | return kmap_atomic(page, crypto_kmap_type(out)); | |
| 40 | } | |
| 41 | ||
| 42 | static inline void crypto_kunmap(void *vaddr, int out) | |
| 43 | { | |
| 44 | kunmap_atomic(vaddr, crypto_kmap_type(out)); | |
| 45 | } | |
| 46 | ||
| 47 | static inline void crypto_yield(struct crypto_tfm *tfm) | |
| 48 | { | |
| 64baf3cf | 49 | if (tfm->crt_flags & CRYPTO_TFM_REQ_MAY_SLEEP) |
| 1da177e4 LT |
50 | cond_resched(); |
| 51 | } | |
| 52 | ||
| 1da177e4 LT |
53 | #ifdef CONFIG_CRYPTO_HMAC |
| 54 | int crypto_alloc_hmac_block(struct crypto_tfm *tfm); | |
| 55 | void crypto_free_hmac_block(struct crypto_tfm *tfm); | |
| 56 | #else | |
| 57 | static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm) | |
| 58 | { | |
| 59 | return 0; | |
| 60 | } | |
| 61 | ||
| 62 | static inline void crypto_free_hmac_block(struct crypto_tfm *tfm) | |
| 63 | { } | |
| 64 | #endif | |
| 65 | ||
| 66 | #ifdef CONFIG_PROC_FS | |
| 67 | void __init crypto_init_proc(void); | |
| cce9e06d | 68 | void __exit crypto_exit_proc(void); |
| 1da177e4 LT |
69 | #else |
| 70 | static inline void crypto_init_proc(void) | |
| 71 | { } | |
| cce9e06d HX |
72 | static inline void crypto_exit_proc(void) |
| 73 | { } | |
| 1da177e4 LT |
74 | #endif |
| 75 | ||
| fbdae9f3 HX |
76 | static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg, |
| 77 | int flags) | |
| 78 | { | |
| 79 | return alg->cra_ctxsize; | |
| 80 | } | |
| 81 | ||
| 82 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg, | |
| 83 | int flags) | |
| 84 | { | |
| 85 | unsigned int len = alg->cra_ctxsize; | |
| 86 | ||
| 87 | switch (flags & CRYPTO_TFM_MODE_MASK) { | |
| 88 | case CRYPTO_TFM_MODE_CBC: | |
| 9d853c37 | 89 | len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1); |
| fbdae9f3 HX |
90 | len += alg->cra_blocksize; |
| 91 | break; | |
| 92 | } | |
| 93 | ||
| 94 | return len; | |
| 95 | } | |
| 96 | ||
| 97 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg, | |
| 98 | int flags) | |
| 99 | { | |
| 100 | return alg->cra_ctxsize; | |
| 101 | } | |
| 102 | ||
| 1da177e4 LT |
103 | int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags); |
| 104 | int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags); | |
| 105 | int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags); | |
| 106 | ||
| 107 | int crypto_init_digest_ops(struct crypto_tfm *tfm); | |
| 108 | int crypto_init_cipher_ops(struct crypto_tfm *tfm); | |
| 109 | int crypto_init_compress_ops(struct crypto_tfm *tfm); | |
| 110 | ||
| 111 | void crypto_exit_digest_ops(struct crypto_tfm *tfm); | |
| 112 | void crypto_exit_cipher_ops(struct crypto_tfm *tfm); | |
| 113 | void crypto_exit_compress_ops(struct crypto_tfm *tfm); | |
| 114 | ||
| 115 | #endif /* _CRYPTO_INTERNAL_H */ | |
| 116 |