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[/] [or1k/] [trunk/] [linux/] [uClibc/] [include/] [protocols/] [routed.h] - Blame information for rev 1771

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1 1325 phoenix
/*-
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 * Copyright (c) 1983, 1989, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *      @(#)routed.h    8.1 (Berkeley) 6/2/93
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 */
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#ifndef _PROTOCOLS_ROUTED_H
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#define _PROTOCOLS_ROUTED_H 1
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#include <sys/socket.h>
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/*
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 * Routing Information Protocol
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 *
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 * Derived from Xerox NS Routing Information Protocol
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 * by changing 32-bit net numbers to sockaddr's and
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 * padding stuff to 32-bit boundaries.
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 */
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#define RIPVERSION      1
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struct netinfo {
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        struct  sockaddr rip_dst;       /* destination net/host */
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        int     rip_metric;             /* cost of route */
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};
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struct rip {
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        u_char  rip_cmd;                /* request/response */
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        u_char  rip_vers;               /* protocol version # */
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        u_char  rip_res1[2];            /* pad to 32-bit boundary */
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        union {
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                struct  netinfo ru_nets[1];     /* variable length... */
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                char    ru_tracefile[1];        /* ditto ... */
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        } ripun;
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#define rip_nets        ripun.ru_nets
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#define rip_tracefile   ripun.ru_tracefile
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};
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/*
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 * Packet types.
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 */
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#define RIPCMD_REQUEST          1       /* want info */
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#define RIPCMD_RESPONSE         2       /* responding to request */
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#define RIPCMD_TRACEON          3       /* turn tracing on */
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#define RIPCMD_TRACEOFF         4       /* turn it off */
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#define RIPCMD_MAX              5
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#ifdef RIPCMDS
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char *ripcmds[RIPCMD_MAX] =
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  { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" };
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#endif
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#define HOPCNT_INFINITY         16      /* per Xerox NS */
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#define MAXPACKETSIZE           512     /* max broadcast size */
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/*
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 * Timer values used in managing the routing table.
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 * Complete tables are broadcast every SUPPLY_INTERVAL seconds.
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 * If changes occur between updates, dynamic updates containing only changes
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 * may be sent.  When these are sent, a timer is set for a random value
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 * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates
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 * are sent until the timer expires.
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 *
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 * Every update of a routing entry forces an entry's timer to be reset.
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 * After EXPIRE_TIME without updates, the entry is marked invalid,
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 * but held onto until GARBAGE_TIME so that others may
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 * see it "be deleted".
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 */
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#define TIMER_RATE              30      /* alarm clocks every 30 seconds */
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#define SUPPLY_INTERVAL         30      /* time to supply tables */
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#define MIN_WAITTIME            2       /* min. interval to broadcast changes */
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#define MAX_WAITTIME            5       /* max. time to delay changes */
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#define EXPIRE_TIME             180     /* time to mark entry invalid */
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#define GARBAGE_TIME            240     /* time to garbage collect */
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#endif /* protocols/routed.h */

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