a6dbe3721e
per Intel policy to include file commit date using git cmd below. The policy does not apply to non-Intel (C) notices. git log --follow -C90% --format=%ad --date default <file> | tail -1 and then pull just the 4 digit year from the result. Intel copyrights were not added to files where Intel either had no contribution ot the contribution lacked substance (ie license header updates, formatting changes, etc). Contribution date used "--follow -C95%" to get the most accurate date. Note that several files in this patch didn't end the license/(c) block with a blank comment line so these were added as the vast majority of files do have this last blank line. Simply there for consistency. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: Id5b7ce4f658fe87132f14139ead58d6e285c04d4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15192 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Community-CI: Mellanox Build Bot
51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2017 Intel Corporation.
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* All rights reserved.
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*/
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/**
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* \file
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* CRC-16 utility functions
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*/
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#ifndef SPDK_CRC16_H
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#define SPDK_CRC16_H
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#include "spdk/stdinc.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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* T10-DIF CRC-16 polynomial
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*/
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#define SPDK_T10DIF_CRC16_POLYNOMIAL 0x8bb7u
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/**
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* Calculate T10-DIF CRC-16 checksum.
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*
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* \param init_crc Initial CRC-16 value.
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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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* \return CRC-16 value.
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*/
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uint16_t spdk_crc16_t10dif(uint16_t init_crc, const void *buf, size_t len);
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/**
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* Calculate T10-DIF CRC-16 checksum and copy data.
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*
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* \param init_crc Initial CRC-16 value.
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* \param dst Destination data buffer for copy.
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* \param src Source data buffer for CRC calculation and copy.
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* \param len Length of buffer in bytes.
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* \return CRC-16 value.
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*/
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uint16_t spdk_crc16_t10dif_copy(uint16_t init_crc, uint8_t *dst, uint8_t *src,
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size_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SPDK_CRC16_H */
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