Annotation of sys/netinet6/pim6.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pim6.h,v 1.3 2005/12/10 01:30:14 deraadt Exp $ */
! 2: /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */
! 3:
! 4: /*
! 5: * Copyright (C) 1998 WIDE Project.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the project nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: */
! 32: /*
! 33: * Protocol Independent Multicast (PIM) definitions
! 34: *
! 35: * Written by Ahmed Helmy, SGI, July 1996
! 36: *
! 37: * MULTICAST
! 38: */
! 39:
! 40: /*
! 41: * PIM packet header
! 42: */
! 43: #define PIM_VERSION 2
! 44: struct pim {
! 45: #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
! 46: u_int pim_type:4, /* the PIM message type, currently they are:
! 47: * Hello, Register, Register-Stop, Join/Prune,
! 48: * Bootstrap, Assert, Graft (PIM-DM only),
! 49: * Graft-Ack (PIM-DM only), C-RP-Adv
! 50: */
! 51: pim_ver:4; /* PIM version number; 2 for PIMv2 */
! 52: #else
! 53: u_int pim_ver:4, /* PIM version */
! 54: pim_type:4; /* PIM type */
! 55: #endif
! 56: u_char pim_rsv; /* Reserved */
! 57: u_short pim_cksum; /* IP style check sum */
! 58: };
! 59:
! 60: #define PIM_MINLEN 8 /* The header min. length is 8 */
! 61: #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */
! 62:
! 63: /*
! 64: * Message types
! 65: */
! 66: #define PIM_REGISTER 1 /* PIM Register type is 1 */
! 67:
! 68: /* second bit in reg_head is the null bit */
! 69: #define PIM_NULL_REGISTER 0x40000000
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