ceph/src/spdk/lib/iscsi/crc32c.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
   5  *   Copyright (c) Intel Corporation.
   6  *   All rights reserved.
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef SPDK_CRC32C_H
  36 #define SPDK_CRC32C_H
  37
  38 #include <stdint.h>
  39 #include <stddef.h>
  40 #include <sys/uio.h>
  41
  42 #define SPDK_CRC32C_INITIAL    0xffffffffUL
  43 #define SPDK_CRC32C_XOR        0xffffffffUL
  44 #define SPDK_CRC32C_POLYNOMIAL 0x1edc6f41UL
  45 #define SPDK_CRC32C_POLYNOMIAL_REFLECT 0x82f63b78UL
  46
  47 #ifdef USE_ISAL
  48 uint32_t crc32_iscsi(const uint8_t *buf, size_t len, uint32_t crc);
  49 #define spdk_update_crc32c(a,b,c) crc32_iscsi(a,b,c)
  50 #else
  51 uint32_t spdk_update_crc32c(const uint8_t *buf, size_t len, uint32_t crc);
  52 #endif
  53 uint32_t spdk_fixup_crc32c(size_t total, uint32_t crc);
  54 uint32_t spdk_crc32c(const uint8_t *buf, size_t len);
  55
  56 #endif /* SPDK_CRC32C_H */