1190207Srpaulo/* @(#) $Header: /tcpdump/master/tcpdump/ip6.h,v 1.8 2007-08-29 02:31:44 mcr Exp $ (LBL) */ 2190207Srpaulo/* NetBSD: ip6.h,v 1.9 2000/07/13 05:34:21 itojun Exp */ 375115Sfenner/* $KAME: ip6.h,v 1.9 2000/07/02 21:01:32 itojun Exp $ */ 475115Sfenner 575115Sfenner/* 675115Sfenner * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 775115Sfenner * All rights reserved. 875115Sfenner * 975115Sfenner * Redistribution and use in source and binary forms, with or without 1075115Sfenner * modification, are permitted provided that the following conditions 1175115Sfenner * are met: 1275115Sfenner * 1. Redistributions of source code must retain the above copyright 1375115Sfenner * notice, this list of conditions and the following disclaimer. 1475115Sfenner * 2. Redistributions in binary form must reproduce the above copyright 1575115Sfenner * notice, this list of conditions and the following disclaimer in the 1675115Sfenner * documentation and/or other materials provided with the distribution. 1775115Sfenner * 3. Neither the name of the project nor the names of its contributors 1875115Sfenner * may be used to endorse or promote products derived from this software 1975115Sfenner * without specific prior written permission. 2075115Sfenner * 2175115Sfenner * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2275115Sfenner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2375115Sfenner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2475115Sfenner * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2575115Sfenner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2675115Sfenner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2775115Sfenner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2875115Sfenner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2975115Sfenner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3075115Sfenner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3175115Sfenner * SUCH DAMAGE. 3275115Sfenner */ 3375115Sfenner 3475115Sfenner/* 3575115Sfenner * Copyright (c) 1982, 1986, 1993 3675115Sfenner * The Regents of the University of California. All rights reserved. 3775115Sfenner * 3875115Sfenner * Redistribution and use in source and binary forms, with or without 3975115Sfenner * modification, are permitted provided that the following conditions 4075115Sfenner * are met: 4175115Sfenner * 1. Redistributions of source code must retain the above copyright 4275115Sfenner * notice, this list of conditions and the following disclaimer. 4375115Sfenner * 2. Redistributions in binary form must reproduce the above copyright 4475115Sfenner * notice, this list of conditions and the following disclaimer in the 4575115Sfenner * documentation and/or other materials provided with the distribution. 4675115Sfenner * 3. All advertising materials mentioning features or use of this software 4775115Sfenner * must display the following acknowledgement: 4875115Sfenner * This product includes software developed by the University of 4975115Sfenner * California, Berkeley and its contributors. 5075115Sfenner * 4. Neither the name of the University nor the names of its contributors 5175115Sfenner * may be used to endorse or promote products derived from this software 5275115Sfenner * without specific prior written permission. 5375115Sfenner * 5475115Sfenner * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5575115Sfenner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5675115Sfenner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5775115Sfenner * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5875115Sfenner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5975115Sfenner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 6075115Sfenner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 6175115Sfenner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 6275115Sfenner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 6375115Sfenner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6475115Sfenner * SUCH DAMAGE. 6575115Sfenner * 6675115Sfenner * @(#)ip.h 8.1 (Berkeley) 6/10/93 6775115Sfenner */ 6875115Sfenner 6975115Sfenner#ifndef _NETINET_IP6_H_ 7075115Sfenner#define _NETINET_IP6_H_ 7175115Sfenner 7275115Sfenner/* 7375115Sfenner * Definition for internet protocol version 6. 7475115Sfenner * RFC 2460 7575115Sfenner */ 7675115Sfenner 7775115Sfennerstruct ip6_hdr { 7875115Sfenner union { 7975115Sfenner struct ip6_hdrctl { 8075115Sfenner u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */ 8175115Sfenner u_int16_t ip6_un1_plen; /* payload length */ 8275115Sfenner u_int8_t ip6_un1_nxt; /* next header */ 8375115Sfenner u_int8_t ip6_un1_hlim; /* hop limit */ 8475115Sfenner } ip6_un1; 8575115Sfenner u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */ 8675115Sfenner } ip6_ctlun; 8775115Sfenner struct in6_addr ip6_src; /* source address */ 8875115Sfenner struct in6_addr ip6_dst; /* destination address */ 89235530Sdelphij} UNALIGNED; 9075115Sfenner 9175115Sfenner#define ip6_vfc ip6_ctlun.ip6_un2_vfc 9275115Sfenner#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow 9375115Sfenner#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen 9475115Sfenner#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt 9575115Sfenner#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim 9675115Sfenner#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim 9775115Sfenner 9875115Sfenner/* in network endian */ 9975115Sfenner#define IPV6_FLOWINFO_MASK ((u_int32_t)htonl(0x0fffffff)) /* flow info (28 bits) */ 10075115Sfenner#define IPV6_FLOWLABEL_MASK ((u_int32_t)htonl(0x000fffff)) /* flow label (20 bits) */ 10175115Sfenner#if 1 10275115Sfenner/* ECN bits proposed by Sally Floyd */ 10375115Sfenner#define IP6TOS_CE 0x01 /* congestion experienced */ 10475115Sfenner#define IP6TOS_ECT 0x02 /* ECN-capable transport */ 10575115Sfenner#endif 10675115Sfenner 10775115Sfenner/* 10875115Sfenner * Extension Headers 10975115Sfenner */ 11075115Sfenner 11175115Sfennerstruct ip6_ext { 112235530Sdelphij u_int8_t ip6e_nxt; 113235530Sdelphij u_int8_t ip6e_len; 114235530Sdelphij} UNALIGNED; 11575115Sfenner 11675115Sfenner/* Hop-by-Hop options header */ 11775115Sfennerstruct ip6_hbh { 11875115Sfenner u_int8_t ip6h_nxt; /* next header */ 11975115Sfenner u_int8_t ip6h_len; /* length in units of 8 octets */ 12075115Sfenner /* followed by options */ 121235530Sdelphij} UNALIGNED; 12275115Sfenner 12375115Sfenner/* Destination options header */ 12475115Sfennerstruct ip6_dest { 12575115Sfenner u_int8_t ip6d_nxt; /* next header */ 12675115Sfenner u_int8_t ip6d_len; /* length in units of 8 octets */ 12775115Sfenner /* followed by options */ 128235530Sdelphij} UNALIGNED; 12975115Sfenner 13075115Sfenner/* Option types and related macros */ 13175115Sfenner#define IP6OPT_PAD1 0x00 /* 00 0 00000 */ 13275115Sfenner#define IP6OPT_PADN 0x01 /* 00 0 00001 */ 13375115Sfenner#define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */ 13475115Sfenner#define IP6OPT_JUMBO_LEN 6 13575115Sfenner#define IP6OPT_ROUTER_ALERT 0x05 /* 00 0 00101 */ 13675115Sfenner 13775115Sfenner#define IP6OPT_RTALERT_LEN 4 13875115Sfenner#define IP6OPT_RTALERT_MLD 0 /* Datagram contains an MLD message */ 13975115Sfenner#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains an RSVP message */ 14075115Sfenner#define IP6OPT_RTALERT_ACTNET 2 /* contains an Active Networks msg */ 14175115Sfenner#define IP6OPT_MINLEN 2 14275115Sfenner 14375115Sfenner#define IP6OPT_BINDING_UPDATE 0xc6 /* 11 0 00110 */ 14475115Sfenner#define IP6OPT_BINDING_ACK 0x07 /* 00 0 00111 */ 14575115Sfenner#define IP6OPT_BINDING_REQ 0x08 /* 00 0 01000 */ 14675115Sfenner#define IP6OPT_HOME_ADDRESS 0xc9 /* 11 0 01001 */ 14775115Sfenner#define IP6OPT_EID 0x8a /* 10 0 01010 */ 14875115Sfenner 14975115Sfenner#define IP6OPT_TYPE(o) ((o) & 0xC0) 15075115Sfenner#define IP6OPT_TYPE_SKIP 0x00 15175115Sfenner#define IP6OPT_TYPE_DISCARD 0x40 15275115Sfenner#define IP6OPT_TYPE_FORCEICMP 0x80 15375115Sfenner#define IP6OPT_TYPE_ICMP 0xC0 15475115Sfenner 15575115Sfenner#define IP6OPT_MUTABLE 0x20 15675115Sfenner 15775115Sfenner/* Routing header */ 15875115Sfennerstruct ip6_rthdr { 15975115Sfenner u_int8_t ip6r_nxt; /* next header */ 16075115Sfenner u_int8_t ip6r_len; /* length in units of 8 octets */ 16175115Sfenner u_int8_t ip6r_type; /* routing type */ 16275115Sfenner u_int8_t ip6r_segleft; /* segments left */ 16375115Sfenner /* followed by routing type specific data */ 164235530Sdelphij} UNALIGNED; 16575115Sfenner 16675115Sfenner/* Type 0 Routing header */ 16775115Sfennerstruct ip6_rthdr0 { 16875115Sfenner u_int8_t ip6r0_nxt; /* next header */ 16975115Sfenner u_int8_t ip6r0_len; /* length in units of 8 octets */ 17075115Sfenner u_int8_t ip6r0_type; /* always zero */ 17175115Sfenner u_int8_t ip6r0_segleft; /* segments left */ 17275115Sfenner u_int8_t ip6r0_reserved; /* reserved field */ 17375115Sfenner u_int8_t ip6r0_slmap[3]; /* strict/loose bit map */ 17475115Sfenner struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */ 175235530Sdelphij} UNALIGNED; 17675115Sfenner 17775115Sfenner/* Fragment header */ 17875115Sfennerstruct ip6_frag { 17975115Sfenner u_int8_t ip6f_nxt; /* next header */ 18075115Sfenner u_int8_t ip6f_reserved; /* reserved field */ 18175115Sfenner u_int16_t ip6f_offlg; /* offset, reserved, and flag */ 18275115Sfenner u_int32_t ip6f_ident; /* identification */ 183235530Sdelphij} UNALIGNED; 18475115Sfenner 185127668Sbms#define IP6F_OFF_MASK 0xfff8 /* mask out offset from ip6f_offlg */ 186127668Sbms#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */ 187127668Sbms#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */ 18875115Sfenner 189235530Sdelphij/* in print-ip6.c */ 190235530Sdelphijextern int nextproto6_cksum(const struct ip6_hdr *, const u_int8_t *, u_int, u_int); 191235530Sdelphij 19275115Sfenner#endif /* not _NETINET_IP6_H_ */ 193