#ifndef _IGMP_
#define	_IGMP_

#include <stdint.h>
#include <netinet/in.h>

#ifdef MI_H_ID_STRINGS
static	char	igmp_h_sccsid[] = "@(#)igmp.h	43.1";
#endif

#ifdef __cplusplus
extern	"C" {
#endif

/*
 * 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
 */


 /*
 * Copyright (c) 2003, PalmSource Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *		Redistributions of source code must retain the above copyright notice,
 *		this list of conditions and the following disclaimer.
 *
 *		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.
 *
 *		Neither the name of the PalmSource 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */

/* Internet Group Management Protocol (IGMP) definitions. */

/*
 * IGMP packet format.
 */
struct igmp {
	uint8_t		igmp_type;	/* version & type of IGMP message  */
	uint8_t		igmp_code;	/* unused, should be zero          */
	uint16_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	/* Host membership query */
#define IGMP_HOST_MEMBERSHIP_REPORT	0x12	/* Old membership report */
#define IGMP_DVMRP			0x13	/* DVMRP routing message */
#define IGMP_PIM			0x14	/* PIM routing message */

#define	IGMP_HOST_NEW_MEMBERSHIP_REPORT	0x16	/* New membership report */

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

#define	IGMP_MTRACE_RESP		0x1e	/* traceroute response */
#define	IGMP_MTRACE			0x1f	/* mcast traceroute messages */

#define IGMP_MAX_HOST_REPORT_DELAY	10	/* max delay for response to */
						/* query (in seconds) */

#define	IGMP_TIMER_SCALE	10	/* denotes that the igmp->timer filed */
					/* specifies time in 10th of seconds */

/*
 * States for IGMPv2 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

/*
 * Revert to new router if we haven't heard from an old router in
 * this abount of time.
 */
#define	IGMP_AGE_THRESHOLD			400

#ifdef __cplusplus
}
#endif

#endif	/* _IGMP_ */
