1 /* $FreeBSD: src/sys/netinet6/pim6.h,v 1.1.2.1 2000/07/15 07:14:36 kris Exp $ */ 2 /* $DragonFly: src/sys/netinet6/pim6.h,v 1.4 2006/05/20 02:42:12 dillon Exp $ */ 3 /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */ 4 5 /* 6 * Copyright (C) 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef _NETINET6_PIM6_H_ 35 #define _NETINET6_PIM6_H_ 36 37 #ifndef _SYS_TYPES_H_ 38 #include <sys/types.h> 39 #endif 40 #ifndef _MACHINE_ENDIAN_H_ 41 #include <machine/endian.h> 42 #endif 43 44 /* 45 * Protocol Independent Multicast (PIM) definitions 46 * 47 * Written by Ahmed Helmy, SGI, July 1996 48 * 49 * MULTICAST 50 */ 51 52 /* 53 * PIM packet header 54 */ 55 #define PIM_VERSION 2 56 57 struct pim { 58 #if _BYTE_ORDER == _LITTLE_ENDIAN 59 u_char pim_type:4, /* the PIM message type, currently they are: 60 * Hello, Register, Register-Stop, Join/Prune, 61 * Bootstrap, Assert, Graft (PIM-DM only), 62 * Graft-Ack (PIM-DM only), C-RP-Adv 63 */ 64 pim_ver:4; /* PIM version number; 2 for PIMv2 */ 65 #elif _BYTE_ORDER == _BIG_ENDIAN 66 u_char pim_ver:4, /* PIM version */ 67 pim_type:4; /* PIM type */ 68 #else 69 #error "Byte order not implemented" 70 #endif 71 u_char pim_rsv; /* Reserved */ 72 u_short pim_cksum; /* IP style check sum */ 73 }; 74 75 #define PIM_MINLEN 8 /* The header min. length is 8 */ 76 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */ 77 78 /* 79 * Message types 80 */ 81 #define PIM_REGISTER 1 /* PIM Register type is 1 */ 82 83 /* second bit in reg_head is the null bit */ 84 #define PIM_NULL_REGISTER 0x40000000 85 86 #endif 87