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- /* -*-C-*-
- *
- * $Header: /ax/networking:include/protocols/routed.h:networking 1.1 $
- * $Source: /ax/networking:include/protocols/routed.h: $
- *
- * Copyright (c) 1995 Acorn Computers Ltd., Cambridge, England
- *
- * $Log: routed.h,v $
- * Revision 1.1 95/01/11 10:18:19 kwelton
- * Initial revision
- *
- */
-
- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * %W% (Berkeley) %G%
- */
-
- /*
- * Routing Information Protocol
- *
- * Derived from Xerox NS Routing Information Protocol
- * by changing 32-bit net numbers to sockaddr's and
- * padding stuff to 32-bit boundaries.
- */
- #define RIPVERSION 1
-
- struct netinfo {
- struct sockaddr rip_dst; /* destination net/host */
- int rip_metric; /* cost of route */
- };
-
- struct rip {
- u_char rip_cmd; /* request/response */
- u_char rip_vers; /* protocol version # */
- u_char rip_res1[2]; /* pad to 32-bit boundary */
- union {
- struct netinfo ru_nets[1]; /* variable length... */
- char ru_tracefile[1]; /* ditto ... */
- } ripun;
- #define rip_nets ripun.ru_nets
- #define rip_tracefile ripun.ru_tracefile
- };
-
- /*
- * Packet types.
- */
- #define RIPCMD_REQUEST 1 /* want info */
- #define RIPCMD_RESPONSE 2 /* responding to request */
- #define RIPCMD_TRACEON 3 /* turn tracing on */
- #define RIPCMD_TRACEOFF 4 /* turn it off */
-
- #define RIPCMD_MAX 5
- #ifdef RIPCMDS
- char *ripcmds[RIPCMD_MAX] =
- { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" };
- #endif
-
- #define HOPCNT_INFINITY 16 /* per Xerox NS */
- #define MAXPACKETSIZE 512 /* max broadcast size */
-
- /*
- * Timer values used in managing the routing table.
- * Complete tables are broadcast every SUPPLY_INTERVAL seconds.
- * If changes occur between updates, dynamic updates containing only changes
- * may be sent. When these are sent, a timer is set for a random value
- * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates
- * are sent until the timer expires.
- *
- * Every update of a routing entry forces an entry's timer to be reset.
- * After EXPIRE_TIME without updates, the entry is marked invalid,
- * but held onto until GARBAGE_TIME so that others may
- * see it "be deleted".
- */
- #define TIMER_RATE 30 /* alarm clocks every 30 seconds */
-
- #define SUPPLY_INTERVAL 30 /* time to supply tables */
- #define MIN_WAITTIME 2 /* min. interval to broadcast changes */
- #define MAX_WAITTIME 5 /* max. time to delay changes */
-
- #define EXPIRE_TIME 180 /* time to mark entry invalid */
- #define GARBAGE_TIME 240 /* time to garbage collect */
-
- /* EOF routed.h */
-