sys/netinet/igmp_var.h

   1 /*      $NetBSD: igmp_var.h,v 1.22 2005/12/10 23:36:23 elad Exp $       */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Stephen Deering of Stanford University.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)igmp_var.h  8.1 (Berkeley) 7/19/93
  35  */
  36
  37 /*
  38  * Copyright (c) 1988 Stephen Deering.
  39  *
  40  * This code is derived from software contributed to Berkeley by
  41  * Stephen Deering of Stanford University.
  42  *
  43  * Redistribution and use in source and binary forms, with or without
  44  * modification, are permitted provided that the following conditions
  45  * are met:
  46  * 1. Redistributions of source code must retain the above copyright
  47  *    notice, this list of conditions and the following disclaimer.
  48  * 2. Redistributions in binary form must reproduce the above copyright
  49  *    notice, this list of conditions and the following disclaimer in the
  50  *    documentation and/or other materials provided with the distribution.
  51  * 3. All advertising materials mentioning features or use of this software
  52  *    must display the following acknowledgement:
  53  *      This product includes software developed by the University of
  54  *      California, Berkeley and its contributors.
  55  * 4. Neither the name of the University nor the names of its contributors
  56  *    may be used to endorse or promote products derived from this software
  57  *    without specific prior written permission.
  58  *
  59  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  69  * SUCH DAMAGE.
  70  *
  71  *      @(#)igmp_var.h  8.1 (Berkeley) 7/19/93
  72  */
  73
  74 #ifndef _NETINET_IGMP_VAR_H_
  75 #define _NETINET_IGMP_VAR_H_
  76
  77 /*
  78  * Internet Group Management Protocol (IGMP),
  79  * implementation-specific definitions.
  80  *
  81  * Written by Steve Deering, Stanford, May 1988.
  82  * Modified by Rosen Sharma, Stanford, Aug 1994.
  83  * Modified by Bill Fenner, Xerox PARC, Feb 1995.
  84  *
  85  * MULTICAST 1.3
  86  */
  87
  88 #define IGMP_STAT_RCV_TOTAL     1       /* total IGMP messages received */
  89 #define IGMP_STAT_RCV_TOOSHORT  2       /* received with too few bytes */
  90 #define IGMP_STAT_RCV_BADSUM    3       /* received with bad checksum */
  91 #define IGMP_STAT_RCV_QUERIES   4       /* received membership queries */
  92 #define IGMP_STAT_RCV_BADQUERIES 5      /* received invalid queries */
  93 #define IGMP_STAT_RCV_REPORTS   6       /* received membership reports */
  94 #define IGMP_STAT_RCV_BADREPORTS 7      /* received invalid reports */
  95 #define IGMP_STAT_RCV_OURREPORTS 8      /* received reports for our groups */
  96 #define IGMP_STAT_SND_REPORTS   9       /* sent membership reports */
  97
  98 #define IGMP_NSTATS             10
  99
 100 #ifdef _KERNEL
 101 /*
 102  * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
 103  * DELAY * countdown frequency).  We assume that the routine random()
 104  * is defined somewhere (and that it returns a positive number).
 105  */
 106 #define IGMP_RANDOM_DELAY(X)    (random() % (X) + 1)
 107
 108 #ifdef __NO_STRICT_ALIGNMENT
 109 #define IGMP_HDR_ALIGNED_P(ig)  1
 110 #else
 111 #define IGMP_HDR_ALIGNED_P(ig)  ((((vaddr_t) (ig)) & 3) == 0)
 112 #endif
 113
 114 void    igmp_init(void);
 115 void    igmp_input(struct mbuf *, ...);
 116 int     igmp_joingroup(struct in_multi *);
 117 void    igmp_leavegroup(struct in_multi *);
 118 void    igmp_fasttimo(void);
 119 void    igmp_slowtimo(void);
 120 void    igmp_purgeif(struct ifnet *);
 121 #endif /* _KERNEL */
 122
 123 #endif /* !_NETINET_IGMP_VAR_H_ */