106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright 2013 Saso Kiselkov. All rights reserved.
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* Copyright (c) 2016 by Delphix. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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#include <sys/zio.h>
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#include <sys/zio_checksum.h>
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#include <sys/sha2.h>
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#include <sys/abd.h>
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#include <sys/qat.h>
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static int
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sha_incremental(void *buf, size_t size, void *arg)
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{
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SHA2_CTX *ctx = arg;
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SHA2Update(ctx, buf, size);
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return (0);
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}
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/*ARGSUSED*/
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void
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abd_checksum_SHA256(abd_t *abd, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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int ret;
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SHA2_CTX ctx;
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zio_cksum_t tmp;
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if (qat_checksum_use_accel(size)) {
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uint8_t *buf = abd_borrow_buf_copy(abd, size);
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ret = qat_checksum(ZIO_CHECKSUM_SHA256, buf, size, &tmp);
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abd_return_buf(abd, buf, size);
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if (ret == CPA_STATUS_SUCCESS)
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goto bswap;
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/* If the hardware implementation fails fall back to software */
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}
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SHA2Init(SHA256, &ctx);
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(void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx);
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SHA2Final(&tmp, &ctx);
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bswap:
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/*
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* A prior implementation of this function had a
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* private SHA256 implementation always wrote things out in
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* Big Endian and there wasn't a byteswap variant of it.
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* To preserve on disk compatibility we need to force that
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* behavior.
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*/
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zcp->zc_word[0] = BE_64(tmp.zc_word[0]);
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zcp->zc_word[1] = BE_64(tmp.zc_word[1]);
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zcp->zc_word[2] = BE_64(tmp.zc_word[2]);
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zcp->zc_word[3] = BE_64(tmp.zc_word[3]);
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}
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/*ARGSUSED*/
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void
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abd_checksum_SHA512_native(abd_t *abd, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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SHA2_CTX ctx;
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SHA2Init(SHA512_256, &ctx);
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(void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx);
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SHA2Final(zcp, &ctx);
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}
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/*ARGSUSED*/
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void
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abd_checksum_SHA512_byteswap(abd_t *abd, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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zio_cksum_t tmp;
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abd_checksum_SHA512_native(abd, size, ctx_template, &tmp);
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zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]);
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zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]);
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zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]);
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zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]);
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}
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