1 /* 2 * Copyright (c) 1988 Stephen Deering. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Stephen Deering of Stanford University. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)igmp.h 8.1 (Berkeley) 6/10/93 34 * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $ 35 * $DragonFly: src/sys/netinet/igmp.h,v 1.4 2006/05/20 02:42:12 dillon Exp $ 36 */ 37 38 #ifndef _NETINET_IGMP_H_ 39 #define _NETINET_IGMP_H_ 40 41 #ifndef _SYS_TYPES_H_ 42 #include <sys/types.h> 43 #endif 44 #ifndef _NETINET_IN_H_ 45 #include <netinet/in.h> 46 #endif 47 48 /* 49 * Internet Group Management Protocol (IGMP) definitions. 50 * 51 * Written by Steve Deering, Stanford, May 1988. 52 * 53 * MULTICAST Revision: 3.5.1.2 54 */ 55 56 /* 57 * IGMP packet format. 58 */ 59 struct igmp { 60 u_char igmp_type; /* version & type of IGMP message */ 61 u_char igmp_code; /* subtype for routing msgs */ 62 u_short igmp_cksum; /* IP-style checksum */ 63 struct in_addr igmp_group; /* group address being reported */ 64 }; /* (zero for queries) */ 65 66 #define IGMP_MINLEN 8 67 68 /* 69 * Message types, including version number. 70 */ 71 #define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */ 72 #define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ 73 #define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ 74 #define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */ 75 76 #define IGMP_DVMRP 0x13 /* DVMRP routing message */ 77 #define IGMP_PIM 0x14 /* PIM routing message */ 78 79 #define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/ 80 #define IGMP_MTRACE 0x1f /* mcast traceroute messages */ 81 82 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to 83 * query (in seconds) according 84 * to RFC1112 */ 85 86 #define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field 87 * specifies time in 10th of seconds*/ 88 89 /* 90 * The following four defininitions are for backwards compatibility. 91 * They should be removed as soon as all applications are updated to 92 * use the new constant names. 93 */ 94 #define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY 95 #define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT 96 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT 97 #define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP 98 99 #endif /* _NETINET_IGMP_H_ */ 100