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
81struct 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
117void	igmp_init(void) __attribute__((section("__TEXT, initcode")));
118void	igmp_input(struct mbuf *, int);
119int		igmp_joingroup(struct in_multi *);
120void	igmp_leavegroup(struct in_multi *);
121void	igmp_fasttimo(void);
122void	igmp_slowtimo(void);
123
124SYSCTL_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
143