git://bbs.cooldavid.org / net-next-2.6.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 | |
| 15 | #include <linux/crypto.h> | |
| 16 | #include <linux/mm.h> | |
| 17 | #include <linux/highmem.h> | |
| 18 | #include <linux/interrupt.h> | |
| 19 | #include <linux/init.h> | |
| 5cb1454b | 20 | #include <linux/list.h> |
| fbdae9f3 | 21 | #include <linux/kernel.h> |
| 5cb1454b | 22 | #include <linux/rwsem.h> |
| 64baf3cf | 23 | #include <linux/slab.h> |
| 1da177e4 LT |
24 | #include <asm/kmap_types.h> |
| 25 | ||
| 5cb1454b HX |
26 | extern struct list_head crypto_alg_list; |
| 27 | extern struct rw_semaphore crypto_alg_sem; | |
| 28 | ||
| 1da177e4 LT |
29 | extern enum km_type crypto_km_types[]; |
| 30 | ||
| 31 | static inline enum km_type crypto_kmap_type(int out) | |
| 32 | { | |
| 33 | return crypto_km_types[(in_softirq() ? 2 : 0) + out]; | |
| 34 | } | |
| 35 | ||
| 36 | static inline void *crypto_kmap(struct page *page, int out) | |
| 37 | { | |
| 38 | return kmap_atomic(page, crypto_kmap_type(out)); | |
| 39 | } | |
| 40 | ||
| 41 | static inline void crypto_kunmap(void *vaddr, int out) | |
| 42 | { | |
| 43 | kunmap_atomic(vaddr, crypto_kmap_type(out)); | |
| 44 | } | |
| 45 | ||
| 46 | static inline void crypto_yield(struct crypto_tfm *tfm) | |
| 47 | { | |
| 64baf3cf | 48 | if (tfm->crt_flags & CRYPTO_TFM_REQ_MAY_SLEEP) |
| 1da177e4 LT |
49 | cond_resched(); |
| 50 | } | |
| 51 | ||
| 1da177e4 LT |
52 | #ifdef CONFIG_CRYPTO_HMAC |
| 53 | int crypto_alloc_hmac_block(struct crypto_tfm *tfm); | |
| 54 | void crypto_free_hmac_block(struct crypto_tfm *tfm); | |
| 55 | #else | |
| 56 | static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm) | |
| 57 | { | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | static inline void crypto_free_hmac_block(struct crypto_tfm *tfm) | |
| 62 | { } | |
| 63 | #endif | |
| 64 | ||
| 65 | #ifdef CONFIG_PROC_FS | |
| 66 | void __init crypto_init_proc(void); | |
| 67 | #else | |
| 68 | static inline void crypto_init_proc(void) | |
| 69 | { } | |
| 70 | #endif | |
| 71 | ||
| fbdae9f3 HX |
72 | static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg, |
| 73 | int flags) | |
| 74 | { | |
| 75 | return alg->cra_ctxsize; | |
| 76 | } | |
| 77 | ||
| 78 | static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg, | |
| 79 | int flags) | |
| 80 | { | |
| 81 | unsigned int len = alg->cra_ctxsize; | |
| 82 | ||
| 83 | switch (flags & CRYPTO_TFM_MODE_MASK) { | |
| 84 | case CRYPTO_TFM_MODE_CBC: | |
| 9d853c37 | 85 | len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1); |
| fbdae9f3 HX |
86 | len += alg->cra_blocksize; |
| 87 | break; | |
| 88 | } | |
| 89 | ||
| 90 | return len; | |
| 91 | } | |
| 92 | ||
| 93 | static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg, | |
| 94 | int flags) | |
| 95 | { | |
| 96 | return alg->cra_ctxsize; | |
| 97 | } | |
| 98 | ||
| 1da177e4 LT |
99 | int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags); |
| 100 | int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags); | |
| 101 | int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags); | |
| 102 | ||
| 103 | int crypto_init_digest_ops(struct crypto_tfm *tfm); | |
| 104 | int crypto_init_cipher_ops(struct crypto_tfm *tfm); | |
| 105 | int crypto_init_compress_ops(struct crypto_tfm *tfm); | |
| 106 | ||
| 107 | void crypto_exit_digest_ops(struct crypto_tfm *tfm); | |
| 108 | void crypto_exit_cipher_ops(struct crypto_tfm *tfm); | |
| 109 | void crypto_exit_compress_ops(struct crypto_tfm *tfm); | |
| 110 | ||
| 111 | #endif /* _CRYPTO_INTERNAL_H */ | |
| 112 |