1 /* 2 * Hash algorithms. 3 * 4 * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.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 13 #ifndef _CRYPTO_INTERNAL_HASH_H 14 #define _CRYPTO_INTERNAL_HASH_H 15 16 #include <crypto/algapi.h> 17 #include <crypto/hash.h> 18 19 struct ahash_request; 20 struct scatterlist; 21 22 struct crypto_hash_walk { 23 char *data; 24 25 unsigned int offset; 26 unsigned int alignmask; 27 28 struct page *pg; 29 unsigned int entrylen; 30 31 unsigned int total; 32 struct scatterlist *sg; 33 34 unsigned int flags; 35 }; 36 37 extern const struct crypto_type crypto_ahash_type; 38 39 int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err); 40 int crypto_hash_walk_first(struct ahash_request *req, 41 struct crypto_hash_walk *walk); 42 43 static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) 44 { 45 return crypto_tfm_ctx(&tfm->base); 46 } 47 48 static inline struct ahash_alg *crypto_ahash_alg( 49 struct crypto_ahash *tfm) 50 { 51 return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; 52 } 53 54 static inline int ahash_enqueue_request(struct crypto_queue *queue, 55 struct ahash_request *request) 56 { 57 return crypto_enqueue_request(queue, &request->base); 58 } 59 60 static inline struct ahash_request *ahash_dequeue_request( 61 struct crypto_queue *queue) 62 { 63 return ahash_request_cast(crypto_dequeue_request(queue)); 64 } 65 66 static inline void *ahash_request_ctx(struct ahash_request *req) 67 { 68 return req->__ctx; 69 } 70 71 static inline int ahash_tfm_in_queue(struct crypto_queue *queue, 72 struct crypto_ahash *tfm) 73 { 74 return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); 75 } 76 77 #endif /* _CRYPTO_INTERNAL_HASH_H */ 78 79