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 1.2 2003/06/17 04:28:53 dillon Exp $ */
3 /* $KAME: pim6.h,v 1.3 2000/03/25 07:23:58 sumikawa Exp $ */
6 * Copyright (C) 1998 WIDE Project.
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34 * Protocol Independent Multicast (PIM) definitions
36 * Written by Ahmed Helmy, SGI, July 1996
46 #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
47 u_char pim_type:4, /* the PIM message type, currently they are:
48 * Hello, Register, Register-Stop, Join/Prune,
49 * Bootstrap, Assert, Graft (PIM-DM only),
50 * Graft-Ack (PIM-DM only), C-RP-Adv
52 pim_ver:4; /* PIM version number; 2 for PIMv2 */
54 u_char pim_ver:4, /* PIM version */
55 pim_type:4; /* PIM type */
57 u_char pim_rsv; /* Reserved */
58 u_short pim_cksum; /* IP style check sum */
61 #define PIM_MINLEN 8 /* The header min. length is 8 */
62 #define PIM6_REG_MINLEN (PIM_MINLEN+40) /* Register message + inner IP6 header */
67 #define PIM_REGISTER 1 /* PIM Register type is 1 */
69 /* second bit in reg_head is the null bit */
70 #define PIM_NULL_REGISTER 0x40000000