io/sfxge/sfxge_tcp.c

49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore/*
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * Copyright (c) 2008-2016 Solarflare Communications Inc.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * All rights reserved.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * Redistribution and use in source and binary forms, with or without
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * modification, are permitted provided that the following conditions are met:
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * 1. Redistributions of source code must retain the above copyright notice,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *    this list of conditions and the following disclaimer.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * 2. Redistributions in binary form must reproduce the above copyright notice,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *    this list of conditions and the following disclaimer in the documentation
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *    and/or other materials provided with the distribution.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * The views and conclusions contained in the software and documentation are
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * those of the authors and should not be interpreted as representing official
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * policies, either expressed or implied, of the FreeBSD Project.
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/types.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/sysmacros.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/ddi.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/sunddi.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/stream.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/strsun.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/strsubr.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/pattr.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <sys/ethernet.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <inet/ip.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <netinet/in.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <netinet/ip.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <netinet/tcp.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <netinet/udp.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include <netinet/sctp.h>
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include "sfxge.h"
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore#include "efx.h"
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore/*
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore * Parse packet headers and return:
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  etherhpp    Ethernet MAC header
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  iphpp       IPv4 header (NULL for non-IPv4 packet)
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  thpp        TCP header (NULL for non-TCP packet)
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  offp        Offset to TCP payload
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  sizep       Size of TCP payload
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  dportp      TCP/UDP/SCTP dest. port (network order), otherwise zero
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore *  sportp      TCP/UDP/SCTP source port, (network order) otherwise zero
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amoresfxge_packet_type_t
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amoresfxge_pkthdr_parse(mblk_t *mp, struct ether_header **etherhpp,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    struct ip **iphpp, struct tcphdr **thpp,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t *offp, size_t *sizep,
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    uint16_t *sportp, uint16_t *dportp)
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore{
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    struct ether_header *etherhp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    uint16_t ether_type;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t etherhs;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    struct ip *iphp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t iphs;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    struct tcphdr *thp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t len;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t ths;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t off;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size_t size;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    uint16_t sport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    uint16_t dport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    sfxge_packet_type_t pkt_type = SFXGE_PACKET_TYPE_UNKNOWN;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    etherhp = NULL;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    iphp = NULL;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    thp = NULL;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    off = 0;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size = 0;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    sport = 0;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    dport = 0;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /* Grab the MAC header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    etherhs = sizeof (struct ether_header);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if ((MBLKL(mp) < etherhs) && (pullupmsg(mp, etherhs) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    etherhp = (struct ether_header *)(mp->b_rptr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    ether_type = etherhp->ether_type;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if (ether_type == htons(ETHERTYPE_VLAN)) {
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        struct ether_vlan_header *ethervhp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        etherhs = sizeof (struct ether_vlan_header);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        if ((MBLKL(mp) < etherhs) && (pullupmsg(mp, etherhs) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore            goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        ethervhp = (struct ether_vlan_header *)(mp->b_rptr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        ether_type = ethervhp->ether_type;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    }
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if (ether_type != htons(ETHERTYPE_IP))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /* Skip over the MAC header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    off += etherhs;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /* Grab the IP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    len = off + sizeof (struct ip);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if ((MBLKL(mp) < len) && (pullupmsg(mp, len) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    iphp = (struct ip *)(mp->b_rptr + off);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    iphs = iphp->ip_hl * 4;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if (iphp->ip_v != IPV4_VERSION)
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /* Get the size of the packet */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size = ntohs(iphp->ip_len);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    ASSERT3U(etherhs + size, <=, msgdsize(mp));
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    pkt_type = SFXGE_PACKET_TYPE_IPV4_OTHER;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    /* Skip over the IP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    off += iphs;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    size -= iphs;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if (iphp->ip_p == IPPROTO_TCP) {
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Grab the TCP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        len = off + sizeof (struct tcphdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        if ((MBLKL(mp) < len) && (pullupmsg(mp, len) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore            goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        thp = (struct tcphdr *)(mp->b_rptr + off);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        ths = thp->th_off * 4;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        dport = thp->th_dport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        sport = thp->th_sport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Skip over the TCP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        off += ths;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        size -= ths;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        pkt_type = SFXGE_PACKET_TYPE_IPV4_TCP;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    } else if (iphp->ip_p == IPPROTO_UDP) {
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        struct udphdr *uhp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Grab the UDP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        len = off + sizeof (struct udphdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        if ((MBLKL(mp) < len) && (pullupmsg(mp, len) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore            goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        uhp = (struct udphdr *)(mp->b_rptr + off);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        dport = uhp->uh_dport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        sport = uhp->uh_sport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Skip over the UDP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        off += sizeof (struct udphdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        size -= sizeof (struct udphdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        pkt_type = SFXGE_PACKET_TYPE_IPV4_UDP;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    } else if (iphp->ip_p == IPPROTO_SCTP) {
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        struct sctp_hdr *shp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Grab the SCTP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        len = off + sizeof (struct sctp_hdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        if ((MBLKL(mp) < len) && (pullupmsg(mp, len) == 0))
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore            goto done;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /*LINTED*/
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        shp = (struct sctp_hdr *)(mp->b_rptr + off);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        dport = shp->sh_dport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        sport = shp->sh_sport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        /* Skip over the SCTP header */
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        off += sizeof (struct sctp_hdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        size -= sizeof (struct sctp_hdr);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        pkt_type = SFXGE_PACKET_TYPE_IPV4_SCTP;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    }
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    if (MBLKL(mp) < off)
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore        (void) pullupmsg(mp, off);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amoredone:
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *etherhpp = etherhp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *iphpp = iphp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *thpp = thp;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *offp = off;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *sizep = size;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *sportp = sport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    *dportp = dport;
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore    return (pkt_type);
49ef7e0638c8b771d8a136eae78b1c0f99acc8e0Garrett D'Amore}