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@@ -0,0 +1,157 @@
+//==========================================================================
+//
+//      include/netinet/igmp.h
+//
+//      
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//####BSDCOPYRIGHTBEGIN####
+//
+// -------------------------------------------
+//
+// Portions of this software may have been derived from OpenBSD or other sources,
+// and are covered by the appropriate copyright disclaimers included herein.
+//
+// -------------------------------------------
+//
+//####BSDCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    gthomas
+// Contributors: gthomas
+// Date:         2000-01-10
+// Purpose:      
+// Description:  
+//              
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+
+/*	$OpenBSD: igmp.h,v 1.3 1999/08/08 00:43:00 niklas Exp $	*/
+/*	$NetBSD: igmp.h,v 1.6 1995/05/31 06:08:21 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1988 Stephen Deering.
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Stephen Deering of Stanford University.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	@(#)igmp.h	8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef _NETINET_IGMP_H_
+#define _NETINET_IGMP_H_
+
+/*
+ * Internet Group Management Protocol (IGMP) definitions.
+ *
+ * MULTICAST 1.3
+ */
+
+/*
+ * IGMP packet format.
+ */
+struct igmp {
+	u_int8_t	igmp_type;	/* version & type of IGMP message  */
+	u_int8_t	igmp_code;	/* code for routing sub-messages   */
+	u_int16_t	igmp_cksum;	/* IP-style checksum               */
+	struct in_addr	igmp_group;	/* group address being reported    */
+};					/*  (zero for queries)             */
+
+#define	IGMP_MINLEN		     8
+
+#define	IGMP_HOST_MEMBERSHIP_QUERY	0x11  /* membership query      */
+#define	IGMP_v1_HOST_MEMBERSHIP_REPORT	0x12  /* v1 membership report  */
+#define	IGMP_DVMRP			0x13  /* DVMRP routing message */
+#define	IGMP_PIM			0x14  /* PIM routing message   */
+#define	IGMP_v2_HOST_MEMBERSHIP_REPORT	0x16  /* v2 membership report  */
+#define	IGMP_HOST_LEAVE_MESSAGE		0x17  /* leave-group message   */
+#define	IGMP_MTRACE_REPLY		0x1e  /* traceroute reply      */
+#define	IGMP_MTRACE_QUERY		0x1f  /* traceroute query      */
+
+#define	IGMP_MAX_HOST_REPORT_DELAY	10    /* max delay for response to */
+					      /*  query (in seconds)       */
+
+#define	IGMP_TIMER_SCALE		10    /* denominator for igmp_timer */
+
+/*
+ * States for the IGMP v2 state table.
+ */
+#define	IGMP_DELAYING_MEMBER	1
+#define	IGMP_IDLE_MEMBER	2
+#define	IGMP_LAZY_MEMBER	3
+#define	IGMP_SLEEPING_MEMBER	4
+#define	IGMP_AWAKENING_MEMBER	5
+
+/*
+ * States for IGMP router version cache.
+ */
+#define	IGMP_v1_ROUTER		1
+#define	IGMP_v2_ROUTER		2
+
+/*
+ * Revert to v2 if we haven't heard from the router in this amount of time.
+ */
+#define	IGMP_AGE_THRESHOLD	540
+
+#ifdef _KERNEL
+void	rti_delete __P((struct ifnet *));
+#endif
+
+#endif // _NETINET_IGMP_H_