1*86d7f5d3SJohn Marino /* $FreeBSD: src/sys/netinet6/pim6.h,v 1.1.2.1 2000/07/15 07:14:36 kris Exp $ */ 2*86d7f5d3SJohn Marino /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */ 3*86d7f5d3SJohn Marino 4*86d7f5d3SJohn Marino /* 5*86d7f5d3SJohn Marino * Copyright (C) 1998 WIDE Project. 6*86d7f5d3SJohn Marino * All rights reserved. 7*86d7f5d3SJohn Marino * 8*86d7f5d3SJohn Marino * Redistribution and use in source and binary forms, with or without 9*86d7f5d3SJohn Marino * modification, are permitted provided that the following conditions 10*86d7f5d3SJohn Marino * are met: 11*86d7f5d3SJohn Marino * 1. Redistributions of source code must retain the above copyright 12*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer. 13*86d7f5d3SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright 14*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer in the 15*86d7f5d3SJohn Marino * documentation and/or other materials provided with the distribution. 16*86d7f5d3SJohn Marino * 3. Neither the name of the project nor the names of its contributors 17*86d7f5d3SJohn Marino * may be used to endorse or promote products derived from this software 18*86d7f5d3SJohn Marino * without specific prior written permission. 19*86d7f5d3SJohn Marino * 20*86d7f5d3SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21*86d7f5d3SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*86d7f5d3SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*86d7f5d3SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24*86d7f5d3SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*86d7f5d3SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*86d7f5d3SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*86d7f5d3SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*86d7f5d3SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*86d7f5d3SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*86d7f5d3SJohn Marino * SUCH DAMAGE. 31*86d7f5d3SJohn Marino */ 32*86d7f5d3SJohn Marino 33*86d7f5d3SJohn Marino #ifndef _NETINET6_PIM6_H_ 34*86d7f5d3SJohn Marino #define _NETINET6_PIM6_H_ 35*86d7f5d3SJohn Marino 36*86d7f5d3SJohn Marino #ifndef _SYS_TYPES_H_ 37*86d7f5d3SJohn Marino #include <sys/types.h> 38*86d7f5d3SJohn Marino #endif 39*86d7f5d3SJohn Marino #include <machine/endian.h> 40*86d7f5d3SJohn Marino 41*86d7f5d3SJohn Marino /* 42*86d7f5d3SJohn Marino * Protocol Independent Multicast (PIM) definitions 43*86d7f5d3SJohn Marino * 44*86d7f5d3SJohn Marino * Written by Ahmed Helmy, SGI, July 1996 45*86d7f5d3SJohn Marino * 46*86d7f5d3SJohn Marino * MULTICAST 47*86d7f5d3SJohn Marino */ 48*86d7f5d3SJohn Marino 49*86d7f5d3SJohn Marino /* 50*86d7f5d3SJohn Marino * PIM packet header 51*86d7f5d3SJohn Marino */ 52*86d7f5d3SJohn Marino #define PIM_VERSION 2 53*86d7f5d3SJohn Marino 54*86d7f5d3SJohn Marino struct pim { 55*86d7f5d3SJohn Marino #if _BYTE_ORDER == _LITTLE_ENDIAN 56*86d7f5d3SJohn Marino u_char pim_type:4, /* the PIM message type, currently they are: 57*86d7f5d3SJohn Marino * Hello, Register, Register-Stop, Join/Prune, 58*86d7f5d3SJohn Marino * Bootstrap, Assert, Graft (PIM-DM only), 59*86d7f5d3SJohn Marino * Graft-Ack (PIM-DM only), C-RP-Adv 60*86d7f5d3SJohn Marino */ 61*86d7f5d3SJohn Marino pim_ver:4; /* PIM version number; 2 for PIMv2 */ 62*86d7f5d3SJohn Marino #elif _BYTE_ORDER == _BIG_ENDIAN 63*86d7f5d3SJohn Marino u_char pim_ver:4, /* PIM version */ 64*86d7f5d3SJohn Marino pim_type:4; /* PIM type */ 65*86d7f5d3SJohn Marino #else 66*86d7f5d3SJohn Marino #error "Byte order not implemented" 67*86d7f5d3SJohn Marino #endif 68*86d7f5d3SJohn Marino u_char pim_rsv; /* Reserved */ 69*86d7f5d3SJohn Marino u_short pim_cksum; /* IP style check sum */ 70*86d7f5d3SJohn Marino }; 71*86d7f5d3SJohn Marino 72*86d7f5d3SJohn Marino #define PIM_MINLEN 8 /* The header min. length is 8 */ 73*86d7f5d3SJohn Marino #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */ 74*86d7f5d3SJohn Marino 75*86d7f5d3SJohn Marino /* 76*86d7f5d3SJohn Marino * Message types 77*86d7f5d3SJohn Marino */ 78*86d7f5d3SJohn Marino #define PIM_REGISTER 1 /* PIM Register type is 1 */ 79*86d7f5d3SJohn Marino 80*86d7f5d3SJohn Marino /* second bit in reg_head is the null bit */ 81*86d7f5d3SJohn Marino #define PIM_NULL_REGISTER 0x40000000 82*86d7f5d3SJohn Marino 83*86d7f5d3SJohn Marino #endif 84