b85127cc6f
Purpose: To support caculating crc32c for iovs. Change-Id: I7ea6d8b71ea2cf6e8b81903439787870923b9bef Signed-off-by: Ziye Yang <ziye.yang@intel.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8093 Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* CRC-32 utility functions
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*/
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#ifndef SPDK_CRC32_H
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#define SPDK_CRC32_H
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#include "spdk/stdinc.h"
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#include "spdk/config.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Calculate a partial CRC-32 IEEE checksum.
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*
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* \param buf Data buffer to checksum.
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* \param len Length of buf in bytes.
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* \param crc Previous CRC-32 value.
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* \return Updated CRC-32 value.
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*/
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uint32_t spdk_crc32_ieee_update(const void *buf, size_t len, uint32_t crc);
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/**
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* Calculate a partial CRC-32C checksum.
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*
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* \param buf Data buffer to checksum.
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* \param len Length of buf in bytes.
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* \param crc Previous CRC-32C value.
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* \return Updated CRC-32C value.
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*/
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uint32_t spdk_crc32c_update(const void *buf, size_t len, uint32_t crc);
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/**
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* Calculate a partial CRC-32C checksum.
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*
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* \param iov Data buffer vectors to checksum.
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* \param iovcnt size of iov parameter.
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* \param crc32c Previous CRC-32C value.
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* \return Updated CRC-32C value.
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*/
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uint32_t spdk_crc32c_iov_update(struct iovec *iov, int iovcnt, uint32_t crc32c);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SPDK_CRC32_H */
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