| /* $FreeBSD: src/sys/netinet6/pim6.h,v 1.2 2000/07/04 16:35:10 itojun Exp $ */ |
| /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */ |
| |
| /* |
| * Copyright (C) 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. |
| */ |
| /* |
| * Protocol Independent Multicast (PIM) definitions |
| * |
| * Written by Ahmed Helmy, SGI, July 1996 |
| * |
| * MULTICAST |
| */ |
| |
| /* |
| * PIM packet header |
| */ |
| #define PIM_VERSION 2 |
| struct pim { |
| #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN) |
| u_char pim_type:4, /* the PIM message type, currently they are: |
| * Hello, Register, Register-Stop, Join/Prune, |
| * Bootstrap, Assert, Graft (PIM-DM only), |
| * Graft-Ack (PIM-DM only), C-RP-Adv |
| */ |
| pim_ver:4; /* PIM version number; 2 for PIMv2 */ |
| #else |
| u_char pim_ver:4, /* PIM version */ |
| pim_type:4; /* PIM type */ |
| #endif |
| u_char pim_rsv; /* Reserved */ |
| u_short pim_cksum; /* IP style check sum */ |
| }; |
| |
| #define PIM_MINLEN 8 /* The header min. length is 8 */ |
| #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */ |
| |
| /* |
| * Message types |
| */ |
| #define PIM_REGISTER 1 /* PIM Register type is 1 */ |
| |
| /* second bit in reg_head is the null bit */ |
| #define PIM_NULL_REGISTER 0x40000000 |
