protocol.h

Variables

ripcmds           X

Macros

DSTNETS_ALL       X
EXPIRE_TIME       X
GARBAGE_TIME      X
HOPCNT_INFINITY   X
MAXPACKETSIZE     X
RIPCMD_MAX        X
RIPCMD_REQUEST    X
RIPCMD_RESPONSE   X
SUPPLY_INTERVAL   X
TIMER_RATE        X

struct's

netinfo           X
rip               X

   1: /*
   2:  * Copyright (c) 1985 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)protocol.h	5.4 (Berkeley) 2/14/86";
   7:  *
   8:  * Includes material written at Cornell University by Bill Nesheim,
   9:  * by permission of the author.
  10:  */
  11: 
  12: /*
  13:  * Xerox Routing Information Protocol
  14:  *
  15:  */
  16: 
  17: struct netinfo {
  18:     union ns_net    rip_dst;        /* destination net */
  19:     u_short     rip_metric;     /* cost of route */
  20: };
  21: 
  22: struct rip {
  23:     u_short rip_cmd;        /* request/response */
  24:     struct netinfo rip_nets[1]; /* variable length */
  25: };
  26: 
  27: /*
  28:  * Packet types.
  29:  */
  30: #define RIPCMD_REQUEST      1   /* want info */
  31: #define RIPCMD_RESPONSE     2   /* responding to request */
  32: 
  33: #define RIPCMD_MAX      3
  34: #ifdef RIPCMDS
  35: char *ripcmds[RIPCMD_MAX] =
  36:   { "#0", "REQUEST", "RESPONSE" };
  37: #endif
  38: 
  39: #define HOPCNT_INFINITY     16      /* per Xerox NS */
  40: #define DSTNETS_ALL     0xffffffff  /* per Xerox NS */
  41: #define MAXPACKETSIZE       512     /* max broadcast size */
  42: 
  43: extern union ns_net ns_anynet;
  44: extern union ns_net ns_zeronet;
  45: 
  46: /*
  47:  * Timer values used in managing the routing table.
  48:  * Every update forces an entry's timer to be reset.  After
  49:  * EXPIRE_TIME without updates, the entry is marked invalid,
  50:  * but held onto until GARBAGE_TIME so that others may
  51:  * see it "be deleted".
  52:  */
  53: #define TIMER_RATE      30  /* alarm clocks every 30 seconds */
  54: 
  55: #define SUPPLY_INTERVAL     30  /* time to supply tables */
  56: 
  57: #define EXPIRE_TIME     180 /* time to mark entry invalid */
  58: #define GARBAGE_TIME        240 /* time to garbage collect */