| /* $NetBSD: ip6.h,v 1.23 2007/12/25 18:33:46 perry Exp $ */ | |
| /* $KAME: ip6.h,v 1.45 2003/06/05 04:46:38 keiichi Exp $ */ | |
| /* | |
| * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
| * All rights reserved. | |
| * | |
| * 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. | |
| * 3. Neither the name of the project nor the names of its contributors | |
| * may be used to endorse or promote products derived from this software | |
| * without specific prior written permission. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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. | |
| */ | |
| /* | |
| * Copyright (c) 1982, 1986, 1993 | |
| * The Regents of the University of California. All rights reserved. | |
| * | |
| * 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. | |
| * 3. Neither the name of the University nor the names of its contributors | |
| * may be used to endorse or promote products derived from this software | |
| * without specific prior written permission. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. | |
| * | |
| * @(#)ip.h 8.1 (Berkeley) 6/10/93 | |
| */ | |
| #ifndef _NETINET_IP6_H_ | |
| #define _NETINET_IP6_H_ | |
| #include <sys/cdefs.h> | |
| #include <sys/types.h> | |
| #include <endian.h> | |
| #include <linux/in6.h> | |
| /* | |
| * Definition for internet protocol version 6. | |
| * RFC 2460 | |
| */ | |
| struct ip6_hdr { | |
| union { | |
| struct ip6_hdrctl { | |
| u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */ | |
| u_int16_t ip6_un1_plen; /* payload length */ | |
| u_int8_t ip6_un1_nxt; /* next header */ | |
| u_int8_t ip6_un1_hlim; /* hop limit */ | |
| } ip6_un1; | |
| u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */ | |
| } ip6_ctlun; | |
| struct in6_addr ip6_src; /* source address */ | |
| struct in6_addr ip6_dst; /* destination address */ | |
| } __packed; | |
| #define ip6_vfc ip6_ctlun.ip6_un2_vfc | |
| #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow | |
| #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen | |
| #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt | |
| #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim | |
| #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim | |
| #define IPV6_VERSION 0x60 | |
| #define IPV6_VERSION_MASK 0xf0 | |
| #define IPV6_FLOWINFO_MASK 0xffffff0f /* flow info (28 bits) */ | |
| #define IPV6_FLOWLABEL_MASK 0xffff0f00 /* flow label (20 bits) */ | |
| #if 1 | |
| /* ECN bits proposed by Sally Floyd */ | |
| #define IP6TOS_CE 0x01 /* congestion experienced */ | |
| #define IP6TOS_ECT 0x02 /* ECN-capable transport */ | |
| #endif | |
| /* | |
| * Extension Headers | |
| */ | |
| struct ip6_ext { | |
| u_int8_t ip6e_nxt; | |
| u_int8_t ip6e_len; | |
| } __packed; | |
| /* Hop-by-Hop options header */ | |
| /* XXX should we pad it to force alignment on an 8-byte boundary? */ | |
| struct ip6_hbh { | |
| u_int8_t ip6h_nxt; /* next header */ | |
| u_int8_t ip6h_len; /* length in units of 8 octets */ | |
| /* followed by options */ | |
| } __packed; | |
| /* Destination options header */ | |
| /* XXX should we pad it to force alignment on an 8-byte boundary? */ | |
| struct ip6_dest { | |
| u_int8_t ip6d_nxt; /* next header */ | |
| u_int8_t ip6d_len; /* length in units of 8 octets */ | |
| /* followed by options */ | |
| } __packed; | |
| /* Option types and related macros */ | |
| #define IP6OPT_PAD1 0x00 /* 00 0 00000 */ | |
| #define IP6OPT_PADN 0x01 /* 00 0 00001 */ | |
| #define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */ | |
| #define IP6OPT_NSAP_ADDR 0xC3 /* 11 0 00011 */ | |
| #define IP6OPT_TUNNEL_LIMIT 0x04 /* 00 0 00100 */ | |
| #define IP6OPT_RTALERT 0x05 /* 00 0 00101 (KAME definition) */ | |
| #define IP6OPT_ROUTER_ALERT 0x05 /* (RFC3542 def, recommended) */ | |
| #define IP6OPT_RTALERT_LEN 4 | |
| #define IP6OPT_RTALERT_MLD 0 /* Datagram contains an MLD message */ | |
| #define IP6OPT_RTALERT_RSVP 1 /* Datagram contains an RSVP message */ | |
| #define IP6OPT_RTALERT_ACTNET 2 /* contains an Active Networks msg */ | |
| #define IP6OPT_MINLEN 2 | |
| #define IP6OPT_TYPE(o) ((o) & 0xC0) | |
| #define IP6OPT_TYPE_SKIP 0x00 | |
| #define IP6OPT_TYPE_DISCARD 0x40 | |
| #define IP6OPT_TYPE_FORCEICMP 0x80 | |
| #define IP6OPT_TYPE_ICMP 0xC0 | |
| #define IP6OPT_MUTABLE 0x20 | |
| /* IPv6 options: common part */ | |
| struct ip6_opt { | |
| u_int8_t ip6o_type; | |
| u_int8_t ip6o_len; | |
| } __packed; | |
| /* Jumbo Payload Option */ | |
| struct ip6_opt_jumbo { | |
| u_int8_t ip6oj_type; | |
| u_int8_t ip6oj_len; | |
| u_int8_t ip6oj_jumbo_len[4]; | |
| } __packed; | |
| #define IP6OPT_JUMBO_LEN 6 | |
| /* NSAP Address Option */ | |
| struct ip6_opt_nsap { | |
| u_int8_t ip6on_type; | |
| u_int8_t ip6on_len; | |
| u_int8_t ip6on_src_nsap_len; | |
| u_int8_t ip6on_dst_nsap_len; | |
| /* followed by source NSAP */ | |
| /* followed by destination NSAP */ | |
| } __packed; | |
| /* Tunnel Limit Option */ | |
| struct ip6_opt_tunnel { | |
| u_int8_t ip6ot_type; | |
| u_int8_t ip6ot_len; | |
| u_int8_t ip6ot_encap_limit; | |
| } __packed; | |
| /* Router Alert Option */ | |
| struct ip6_opt_router { | |
| u_int8_t ip6or_type; | |
| u_int8_t ip6or_len; | |
| u_int8_t ip6or_value[2]; | |
| } __packed; | |
| /* Router alert values (in network byte order) */ | |
| #define IP6_ALERT_MLD 0x0000 | |
| #define IP6_ALERT_RSVP 0x0100 | |
| #define IP6_ALERT_AN 0x0200 | |
| /* Routing header */ | |
| struct ip6_rthdr { | |
| u_int8_t ip6r_nxt; /* next header */ | |
| u_int8_t ip6r_len; /* length in units of 8 octets */ | |
| u_int8_t ip6r_type; /* routing type */ | |
| u_int8_t ip6r_segleft; /* segments left */ | |
| /* followed by routing type specific data */ | |
| } __packed; | |
| /* Type 0 Routing header */ | |
| struct ip6_rthdr0 { | |
| u_int8_t ip6r0_nxt; /* next header */ | |
| u_int8_t ip6r0_len; /* length in units of 8 octets */ | |
| u_int8_t ip6r0_type; /* always zero */ | |
| u_int8_t ip6r0_segleft; /* segments left */ | |
| u_int32_t ip6r0_reserved; /* reserved field */ | |
| } __packed; | |
| /* Fragment header */ | |
| struct ip6_frag { | |
| u_int8_t ip6f_nxt; /* next header */ | |
| u_int8_t ip6f_reserved; /* reserved field */ | |
| u_int16_t ip6f_offlg; /* offset, reserved, and flag */ | |
| u_int32_t ip6f_ident; /* identification */ | |
| } __packed; | |
| #define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */ | |
| #define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */ | |
| #define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */ | |
| /* | |
| * Internet implementation parameters. | |
| */ | |
| #define IPV6_MAXHLIM 255 /* maximum hoplimit */ | |
| #define IPV6_DEFHLIM 64 /* default hlim */ | |
| #define IPV6_FRAGTTL 120 /* ttl for fragment packets, in slowtimo tick */ | |
| #define IPV6_HLIMDEC 1 /* subtracted when forwarding */ | |
| #define IPV6_MMTU 1280 /* minimal MTU and reassembly. 1024 + 256 */ | |
| #define IPV6_MAXPACKET 65535 /* ip6 max packet size without Jumbo payload*/ | |
| #endif /* !_NETINET_IP6_H_ */ |