/* Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _NETINET_IGMP_H

#define	_NETINET_IGMP_H 1

#include <sys/cdefs.h>

#include <sys/types.h>

#ifdef __USE_MISC

#include <netinet/in.h>

__BEGIN_DECLS

/*

 * 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.

 * 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

 *	$FreeBSD$

 */

struct igmp {

  uint8_t igmp_type;             /* IGMP type */

  uint8_t igmp_code;             /* routing code */

  uint16_t igmp_cksum;           /* checksum */

  struct in_addr igmp_group;     /* group address */

};

#define IGMP_MINLEN			8

/*

 * Message types, including version number.

 */

#define IGMP_MEMBERSHIP_QUERY   	0x11	/* membership query         */

#define IGMP_V1_MEMBERSHIP_REPORT	0x12	/* Ver. 1 membership report */

#define IGMP_V2_MEMBERSHIP_REPORT	0x16	/* Ver. 2 membership report */

#define IGMP_V2_LEAVE_GROUP		0x17	/* Leave-group message	    */

#define IGMP_DVMRP			0x13	/* DVMRP routing message    */

#define IGMP_PIM			0x14	/* PIM routing message      */

#define IGMP_TRACE			0x15

#define IGMP_MTRACE_RESP		0x1e	/* traceroute resp.(to sender)*/

#define IGMP_MTRACE			0x1f	/* mcast traceroute messages  */

#define IGMP_MAX_HOST_REPORT_DELAY	10	/* max delay for response to     */

						/*  query (in seconds) according */

						/*  to RFC1112                   */

#define IGMP_TIMER_SCALE		10	/* denotes that the igmp code field */

						/* specifies time in 10th of seconds*/

/*

 * 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

/*

 * The following four defininitions are for backwards compatibility.

 * They should be removed as soon as all applications are updated to

 * use the new constant names.

 */

#define IGMP_HOST_MEMBERSHIP_QUERY	IGMP_MEMBERSHIP_QUERY

#define IGMP_HOST_MEMBERSHIP_REPORT	IGMP_V1_MEMBERSHIP_REPORT

#define IGMP_HOST_NEW_MEMBERSHIP_REPORT	IGMP_V2_MEMBERSHIP_REPORT

#define IGMP_HOST_LEAVE_MESSAGE		IGMP_V2_LEAVE_GROUP

__END_DECLS

#endif

#endif	/* netinet/igmp.h */