LXR linux/drivers/crypto/qce/sha.h

   1/*
   2 * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 and
   6 * only version 2 as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 */
  13
  14#ifndef _SHA_H_
  15#define _SHA_H_
  16
  17#include <crypto/scatterwalk.h>
  18#include <crypto/sha.h>
  19
  20#include "common.h"
  21#include "core.h"
  22
  23#define QCE_SHA_MAX_BLOCKSIZE           SHA256_BLOCK_SIZE
  24#define QCE_SHA_MAX_DIGESTSIZE          SHA256_DIGEST_SIZE
  25
  26struct qce_sha_ctx {
  27        u8 authkey[QCE_SHA_MAX_BLOCKSIZE];
  28};
  29
  30/**
  31 * struct qce_sha_reqctx - holds private ahash objects per request
  32 * @buf: used during update, import and export
  33 * @tmpbuf: buffer for internal use
  34 * @digest: calculated digest buffer
  35 * @buflen: length of the buffer
  36 * @flags: operation flags
  37 * @src_orig: original request sg list
  38 * @nbytes_orig: original request number of bytes
  39 * @src_nents: source number of entries
  40 * @byte_count: byte count
  41 * @count: save count in states during update, import and export
  42 * @first_blk: is it the first block
  43 * @last_blk: is it the last block
  44 * @sg: used to chain sg lists
  45 * @authkey: pointer to auth key in sha ctx
  46 * @authklen: auth key length
  47 * @result_sg: scatterlist used for result buffer
  48 */
  49struct qce_sha_reqctx {
  50        u8 buf[QCE_SHA_MAX_BLOCKSIZE];
  51        u8 tmpbuf[QCE_SHA_MAX_BLOCKSIZE];
  52        u8 digest[QCE_SHA_MAX_DIGESTSIZE];
  53        unsigned int buflen;
  54        unsigned long flags;
  55        struct scatterlist *src_orig;
  56        unsigned int nbytes_orig;
  57        int src_nents;
  58        __be32 byte_count[2];
  59        u64 count;
  60        bool first_blk;
  61        bool last_blk;
  62        struct scatterlist sg[2];
  63        u8 *authkey;
  64        unsigned int authklen;
  65        struct scatterlist result_sg;
  66};
  67
  68static inline struct qce_alg_template *to_ahash_tmpl(struct crypto_tfm *tfm)
  69{
  70        struct crypto_ahash *ahash = __crypto_ahash_cast(tfm);
  71        struct ahash_alg *alg = container_of(crypto_hash_alg_common(ahash),
  72                                             struct ahash_alg, halg);
  73
  74        return container_of(alg, struct qce_alg_template, alg.ahash);
  75}
  76
  77extern const struct qce_algo_ops ahash_ops;
  78
  79#endif /* _SHA_H_ */
  80