ip.h

网络流量采集及分析软件

/*! \file ip.h 

    Copyright 2003-2004 Fraunhofer Institute for Open Communication Systems (FOKUS),
                        Berlin, Germany

    This file is part of Network Measurement and Accounting System (NETMATE).

    NETMATE is free software; you can redistribute it and/or modify 
    it under the terms of the GNU General Public License as published by 
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    NETMATE is distributed in the hope that it will be useful, 
    but WITHOUT ANY WARRANTY; without even the implied warranty of 
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this software; if not, write to the Free Software 
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Description:
portable IP header definition

$Id: ip.h,v 1.1.1.1 2004/12/23 05:52:36 s_zander Exp $
*/

#include "config.h"

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif

struct iphdr
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int ihl:4;
    unsigned int version:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
    unsigned int version:4;
    unsigned int ihl:4;
#else
# error "Please fix <bits/endian.h>"
#endif
    uint8_t tos;
    uint16_t tot_len;
    uint16_t id;
    uint16_t frag_off;
    uint8_t ttl;
    uint8_t protocol;
    uint16_t check;
    uint32_t saddr;
    uint32_t daddr;
    /*The options start here. */
};

/*

struct ip6hdr
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int flowlabel:20; 
    unsigned int trafficclass:8;
    unsigned int version:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
    unsigned int version:4;
    unsigned int trafficclass:8;
    unsigned int flowlabel:20; 
#else
# error "Please fix <bits/endian.h>"
#endif
    uint16_t payloadlen;
    uint8_t  nextheader;
    uint8_t  ttl;
    struct in6_addr saddr;
    struct in6_addr daddr;
};
*/