LXR linux/include/crypto/internal/hash.h

   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
  19struct ahash_request;
  20struct scatterlist;
  21
  22struct 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
  37extern const struct crypto_type crypto_ahash_type;
  38
  39int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
  40int crypto_hash_walk_first(struct ahash_request *req,
  41                           struct crypto_hash_walk *walk);
  42
  43static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
  44{
  45        return crypto_tfm_ctx(&tfm->base);
  46}
  47
  48static 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
  54static 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
  60static inline struct ahash_request *ahash_dequeue_request(
  61        struct crypto_queue *queue)
  62{
  63        return ahash_request_cast(crypto_dequeue_request(queue));
  64}
  65
  66static inline void *ahash_request_ctx(struct ahash_request *req)
  67{
  68        return req->__ctx;
  69}
  70
  71static 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