1 /* $OpenBSD: igmp_var.h,v 1.7 2003/06/02 23:28:13 millert Exp $ */
2 /* $NetBSD: igmp_var.h,v 1.9 1996/02/13 23:41:31 christos Exp $ */
3
4 /*
5 * Copyright (c) 1988 Stephen Deering.
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * Stephen Deering of Stanford University.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
37 */
38
39 #ifndef _NETINET_IGMP_VAR_H_
40 #define _NETINET_IGMP_VAR_H_
41
42 /*
43 * Internet Group Management Protocol (IGMP),
44 * implementation-specific definitions.
45 *
46 * Written by Steve Deering, Stanford, May 1988.
47 * Modified by Rosen Sharma, Stanford, Aug 1994.
48 * Modified by Bill Fenner, Xerox PARC, Feb 1995.
49 *
50 * MULTICAST 1.3
51 */
52
53 struct igmpstat {
54 u_long igps_rcv_total; /* total IGMP messages received */
55 u_long igps_rcv_tooshort; /* received with too few bytes */
56 u_long igps_rcv_badsum; /* received with bad checksum */
57 u_long igps_rcv_queries; /* received membership queries */
58 u_long igps_rcv_badqueries; /* received invalid queries */
59 u_long igps_rcv_reports; /* received membership reports */
60 u_long igps_rcv_badreports; /* received invalid reports */
61 u_long igps_rcv_ourreports; /* received reports for our groups */
62 u_long igps_snd_reports; /* sent membership reports */
63 };
64
65 #ifdef _KERNEL
66 extern struct igmpstat igmpstat;
67
68 /*
69 * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
70 * DELAY * countdown frequency). We assume that the routine random()
71 * is defined somewhere (and that it returns a positive number).
72 */
73 #define IGMP_RANDOM_DELAY(X) (arc4random() % (X) + 1)
74
75 void igmp_init(void);
76 void igmp_input(struct mbuf *, ...);
77 void igmp_joingroup(struct in_multi *);
78 void igmp_leavegroup(struct in_multi *);
79 void igmp_fasttimo(void);
80 void igmp_slowtimo(void);
81 #endif /* _KERNEL */
82 #endif /* _NETINET_IGMP_VAR_H_ */