The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet/igmp_var.h

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    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 struct igmpstat {
   89         u_quad_t igps_rcv_total;        /* total IGMP messages received */
   90         u_quad_t igps_rcv_tooshort;     /* received with too few bytes */
   91         u_quad_t igps_rcv_badsum;       /* received with bad checksum */
   92         u_quad_t igps_rcv_queries;      /* received membership queries */
   93         u_quad_t igps_rcv_badqueries;   /* received invalid queries */
   94         u_quad_t igps_rcv_reports;      /* received membership reports */
   95         u_quad_t igps_rcv_badreports;   /* received invalid reports */
   96         u_quad_t igps_rcv_ourreports;   /* received reports for our groups */
   97         u_quad_t igps_snd_reports;      /* sent membership reports */
   98 };
   99 
  100 #ifdef _KERNEL
  101 extern  struct igmpstat igmpstat;
  102 
  103 /*
  104  * Macro to compute a random timer value between 1 and (IGMP_MAX_REPORTING_
  105  * DELAY * countdown frequency).  We assume that the routine random()
  106  * is defined somewhere (and that it returns a positive number).
  107  */
  108 #define IGMP_RANDOM_DELAY(X)    (random() % (X) + 1)
  109 
  110 #ifdef __NO_STRICT_ALIGNMENT
  111 #define IGMP_HDR_ALIGNED_P(ig)  1
  112 #else
  113 #define IGMP_HDR_ALIGNED_P(ig)  ((((vaddr_t) (ig)) & 3) == 0)
  114 #endif
  115 
  116 void    igmp_input(struct mbuf *, ...);
  117 int     igmp_joingroup(struct in_multi *);
  118 void    igmp_leavegroup(struct in_multi *);
  119 void    igmp_fasttimo(void);
  120 void    igmp_slowtimo(void);
  121 void    igmp_purgeif(struct ifnet *);
  122 #endif
  123 
  124 #endif /* !_NETINET_IGMP_VAR_H_ */

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