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