104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
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/*-
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* Copyright (c) 2010-2011 Juniper Networks, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert N. M. Watson under contract
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* to Juniper Networks, Inc.
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet6.h"
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#include "opt_pcbgroup.h"
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#ifndef PCBGROUP
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#error "options RSS depends on options PCBGROUP"
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#endif
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#include <sys/param.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/priv.h>
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#include <sys/kernel.h>
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#include <sys/smp.h>
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#include <sys/sysctl.h>
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#include <sys/sbuf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/netisr.h>
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#include <net/rss_config.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet6/in6_rss.h>
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#include <netinet/in_var.h>
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/* for software rss hash support */
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <netinet/udp.h>
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/*
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* Hash an IPv6 2-tuple.
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*/
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uint32_t
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rss_hash_ip6_2tuple(const struct in6_addr *src, const struct in6_addr *dst)
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{
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uint8_t data[sizeof(*src) + sizeof(*dst)];
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u_int datalen;
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datalen = 0;
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bcopy(src, &data[datalen], sizeof(*src));
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datalen += sizeof(*src);
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bcopy(dst, &data[datalen], sizeof(*dst));
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datalen += sizeof(*dst);
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return (rss_hash(datalen, data));
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}
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/*
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* Hash an IPv6 4-tuple.
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*/
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uint32_t
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rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,
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const struct in6_addr *dst, u_short dstport)
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{
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uint8_t data[sizeof(*src) + sizeof(*dst) + sizeof(srcport) +
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sizeof(dstport)];
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u_int datalen;
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datalen = 0;
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bcopy(src, &data[datalen], sizeof(*src));
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datalen += sizeof(*src);
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bcopy(dst, &data[datalen], sizeof(*dst));
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datalen += sizeof(*dst);
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bcopy(&srcport, &data[datalen], sizeof(srcport));
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datalen += sizeof(srcport);
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bcopy(&dstport, &data[datalen], sizeof(dstport));
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datalen += sizeof(dstport);
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return (rss_hash(datalen, data));
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}
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