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	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
	7	*
	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1988 Stephen Deering.
	27	* Copyright (c) 1992, 1993
	28	* The Regents of the University of California. All rights reserved.
	29	*
	30	* This code is derived from software contributed to Berkeley by
	31	* Stephen Deering of Stanford University.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the University of
	44	* California, Berkeley and its contributors.
	45	* 4. Neither the name of the University nor the names of its contributors
	46	* may be used to endorse or promote products derived from this software
	47	* without specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*
	61	* from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
	62	*/
	63
	64	#ifndef _NETINET_IGMP_VAR_H_
	65	#define _NETINET_IGMP_VAR_H_
	66	#include <sys/appleapiopts.h>
	67
	68	#ifdef __APPLE_API_UNSTABLE
	69
	70	/*
	71	* Internet Group Management Protocol (IGMP),
	72	* implementation-specific definitions.
	73	*
	74	* Written by Steve Deering, Stanford, May 1988.
	75	*
	76	* MULTICAST Revision: 3.5.1.3
	77	*/
	78
	79	struct igmpstat {
	80	u_int igps_rcv_total; /* total IGMP messages received */
	81	u_int igps_rcv_tooshort; /* received with too few bytes */
	82	u_int igps_rcv_badsum; /* received with bad checksum */
	83	u_int igps_rcv_queries; /* received membership queries */
	84	u_int igps_rcv_badqueries; /* received invalid queries */
	85	u_int igps_rcv_reports; /* received membership reports */
	86	u_int igps_rcv_badreports; /* received invalid reports */
	87	u_int igps_rcv_ourreports; /* received reports for our groups */
	88	u_int igps_snd_reports; /* sent membership reports */
	89	};
	90
	91	#ifdef KERNEL
	92	#ifdef __APPLE_API_PRIVATE
	93	#define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
	94
	95	/*
	96	* States for IGMPv2's leave processing
	97	*/
	98	#define IGMP_OTHERMEMBER 0
	99	#define IGMP_IREPORTEDLAST 1
	100
	101	/*
	102	* We must remember what version the subnet's querier is.
	103	* We conveniently use the IGMP message type for the proper
	104	* membership report to keep this state.
	105	*/
	106	#define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT
	107	#define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT
	108
	109	/*
	110	* Revert to new router if we haven't heard from an old router in
	111	* this amount of time.
	112	*/
	113	#define IGMP_AGE_THRESHOLD 540
	114
	115	void igmp_init __P((void));
	116	void igmp_input __P((struct mbuf *, int));
	117	int igmp_joingroup __P((struct in_multi *));
	118	void igmp_leavegroup __P((struct in_multi *));
	119	void igmp_fasttimo __P((void));
	120	void igmp_slowtimo __P((void));
	121
	122	SYSCTL_DECL(_net_inet_igmp);
	123
	124	#endif /* __APPLE_API_PRIVATE */
	125	#endif
	126
	127	/*
	128	* Names for IGMP sysctl objects
	129	*/
	130	#define IGMPCTL_STATS 1 /* statistics (read-only) */
	131	#define IGMPCTL_MAXID 2
	132
	133	#define IGMPCTL_NAMES { \
	134	{ 0, 0 }, \
	135	{ "stats", CTLTYPE_STRUCT }, \
	136	}
	137
	138	#endif /* __APPLE_API_UNSTABLE */
	139	#endif
	140