a1ec258ac7
Daisuke Aoyama originally contributed to istgt, the iSCSI target in FreeBSD. The SPDK iSCSI code is originally derived from that. Due to copy and paste, some incorrect copyright attributions have been added to other files that do not derive from istgt, so this patch removes those. It is doubtful, at this point, that there is any code whatsoever that remains from the original istgt, but we can revisit that at a later time. Change-Id: I207e1e6b99d271e2f12690be90a96f7d0c113af7 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/420679 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
109 lines
3.3 KiB
C
109 lines
3.3 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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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* IEEE CRC-32 polynomial (bit reflected)
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*/
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#define SPDK_CRC32_POLYNOMIAL_REFLECT 0xedb88320UL
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/**
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* CRC-32C (Castagnoli) polynomial (bit reflected)
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*/
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#define SPDK_CRC32C_POLYNOMIAL_REFLECT 0x82f63b78UL
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struct spdk_crc32_table {
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uint32_t table[256];
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};
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/**
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* Initialize a CRC32 lookup table for a given polynomial.
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*
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* \param table Table to fill with precalculated CRC-32 data.
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* \param polynomial_reflect Bit-reflected CRC-32 polynomial.
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*/
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void spdk_crc32_table_init(struct spdk_crc32_table *table,
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uint32_t polynomial_reflect);
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/**
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* Calculate a partial CRC-32 checksum.
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*
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* \param table CRC-32 table initialized with spdk_crc32_table_init().
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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_update(const struct spdk_crc32_table *table,
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const void *buf, size_t len,
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uint32_t crc);
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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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#ifdef __cplusplus
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}
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#endif
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#endif /* SPDK_CRC32_H */
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