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/*-
* Copyright (c) 2010-2011 Juniper Networks, Inc.
* All rights reserved.
*
* This software was developed by Robert N. M. Watson under contract
* to Juniper Networks, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_inet6.h"
#include "opt_pcbgroup.h"
#ifndef PCBGROUP
#error "options RSS depends on options PCBGROUP"
#endif
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/priv.h>
#include <sys/kernel.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/sbuf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/netisr.h>
#include <net/rss_config.h>
#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet6/in6_rss.h>
#include <netinet/in_var.h>
/* for software rss hash support */
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
/*
* Hash an IPv6 2-tuple.
*/
uint32_t
rss_hash_ip6_2tuple(const struct in6_addr *src, const struct in6_addr *dst)
{
uint8_t data[sizeof(*src) + sizeof(*dst)];
u_int datalen;
datalen = 0;
bcopy(src, &data[datalen], sizeof(*src));
datalen += sizeof(*src);
bcopy(dst, &data[datalen], sizeof(*dst));
datalen += sizeof(*dst);
return (rss_hash(datalen, data));
}
/*
* Hash an IPv6 4-tuple.
*/
uint32_t
rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,
const struct in6_addr *dst, u_short dstport)
{
uint8_t data[sizeof(*src) + sizeof(*dst) + sizeof(srcport) +
sizeof(dstport)];
u_int datalen;
datalen = 0;
bcopy(src, &data[datalen], sizeof(*src));
datalen += sizeof(*src);
bcopy(dst, &data[datalen], sizeof(*dst));
datalen += sizeof(*dst);
bcopy(&srcport, &data[datalen], sizeof(srcport));
datalen += sizeof(srcport);
bcopy(&dstport, &data[datalen], sizeof(dstport));
datalen += sizeof(dstport);
return (rss_hash(datalen, data));
}
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