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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2015, Joyent, Inc.
*/
/*
* Perform standard crc32 functions.
*
* For more information, see the big theory statement in
* lib/varpd/svp/common/libvarpd_svp.c.
*
* Really, this should just be a libcrc.
*/
#include <sys/crc32.h>
#include <stdint.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <inttypes.h>
#include <libvarpd_svp.h>
static uint32_t svp_crc32_tab[] = { CRC32_TABLE };
static uint32_t
svp_crc32(uint32_t old, const uint8_t *buf, size_t len)
{
uint32_t out;
CRC32(out, buf, len, old, svp_crc32_tab);
return (out);
}
void
svp_query_crc32(svp_req_t *shp, void *buf, size_t data)
{
uint32_t crc = -1U;
shp->svp_crc32 = 0;
crc = svp_crc32(crc, (uint8_t *)shp, sizeof (svp_req_t));
crc = svp_crc32(crc, buf, data);
crc = ~crc;
shp->svp_crc32 = htonl(crc);
}
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