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- /* $KAME: pim6.h,v 1.2 2000/02/22 14:04:33 itojun 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
-