sys/netinet6/pim6.h

1.4   itojun /*	$NetBSD: pim6.h,v 1.4 2001/02/10 04:14:29 itojun Exp $	*/
1.4   itojun /*	$KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $	*/
1.3  thorpej
1.2   itojun /*
1.2   itojun  * Copyright (C) 1998 WIDE Project.
1.2   itojun  * All rights reserved.
1.4   itojun  *
1.2   itojun  * Redistribution and use in source and binary forms, with or without
1.2   itojun  * modification, are permitted provided that the following conditions
1.2   itojun  * are met:
1.2   itojun  * 1. Redistributions of source code must retain the above copyright
1.2   itojun  *    notice, this list of conditions and the following disclaimer.
1.2   itojun  * 2. Redistributions in binary form must reproduce the above copyright
1.2   itojun  *    notice, this list of conditions and the following disclaimer in the
1.2   itojun  *    documentation and/or other materials provided with the distribution.
1.2   itojun  * 3. Neither the name of the project nor the names of its contributors
1.2   itojun  *    may be used to endorse or promote products derived from this software
1.2   itojun  *    without specific prior written permission.
1.4   itojun  *
1.2   itojun  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
1.2   itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.2   itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.2   itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
1.2   itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.2   itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.2   itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.2   itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.2   itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.2   itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.2   itojun  * SUCH DAMAGE.
1.2   itojun  */
1.2   itojun /*
1.2   itojun  * Protocol Independent Multicast (PIM) definitions
1.2   itojun  *
1.2   itojun  * Written by Ahmed Helmy, SGI, July 1996
1.2   itojun  *
1.2   itojun  * MULTICAST
1.2   itojun  */
1.2   itojun
1.2   itojun /*
1.2   itojun  * PIM packet header
1.2   itojun  */
1.2   itojun #define PIM_VERSION	2
1.2   itojun struct pim {
1.2   itojun #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
1.2   itojun 	u_char	pim_type:4, /* the PIM message type, currently they are:
1.2   itojun 			     * Hello, Register, Register-Stop, Join/Prune,
1.2   itojun 			     * Bootstrap, Assert, Graft (PIM-DM only),
1.2   itojun 			     * Graft-Ack (PIM-DM only), C-RP-Adv
1.2   itojun 			     */
1.2   itojun 		pim_ver:4;  /* PIM version number; 2 for PIMv2 */
1.2   itojun #else
1.2   itojun 	u_char	pim_ver:4,	/* PIM version */
1.2   itojun 		pim_type:4;	/* PIM type    */
1.2   itojun #endif
1.2   itojun 	u_char  pim_rsv;	/* Reserved */
1.2   itojun 	u_short	pim_cksum;	/* IP style check sum */
1.2   itojun };
1.2   itojun
1.2   itojun #define PIM_MINLEN	8		/* The header min. length is 8    */
1.2   itojun #define PIM6_REG_MINLEN	(PIM_MINLEN+40)	/* Register message + inner IP6 header */
1.2   itojun
1.4   itojun /*
1.2   itojun  * Message types
1.2   itojun  */
1.2   itojun #define PIM_REGISTER	1	/* PIM Register type is 1 */
1.2   itojun
1.2   itojun /* second bit in reg_head is the null bit */
1.2   itojun #define PIM_NULL_REGISTER 0x40000000