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Annotation of 43BSDReno/sbin/XNSrouted/protocol.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1985 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This file includes significant work done at Cornell University by
                      6:  * Bill Nesheim.  That work included by permission.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted
                      9:  * provided that: (1) source distributions retain this entire copyright
                     10:  * notice and comment, and (2) distributions including binaries display
                     11:  * the following acknowledgement:  ``This product includes software
                     12:  * developed by the University of California, Berkeley and its contributors''
                     13:  * in the documentation or other materials provided with the distribution
                     14:  * and in all advertising materials mentioning features or use of this
                     15:  * software. Neither the name of the University nor the names of its
                     16:  * contributors may be used to endorse or promote products derived
                     17:  * from this software without specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     19:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  *
                     22:  *     @(#)protocol.h  5.6 (Berkeley) 6/1/90
                     23:  */
                     24: 
                     25: /*
                     26:  * Xerox Routing Information Protocol
                     27:  *
                     28:  */
                     29: 
                     30: struct netinfo {
                     31:        union ns_net    rip_dst;                /* destination net */
                     32:        u_short         rip_metric;             /* cost of route */
                     33: };
                     34: 
                     35: struct rip {
                     36:        u_short rip_cmd;                /* request/response */
                     37:        struct netinfo rip_nets[1];     /* variable length */
                     38: };
                     39:  
                     40: /*
                     41:  * Packet types.
                     42:  */
                     43: #define        RIPCMD_REQUEST          1       /* want info */
                     44: #define        RIPCMD_RESPONSE         2       /* responding to request */
                     45: 
                     46: #define        RIPCMD_MAX              3
                     47: #ifdef RIPCMDS
                     48: char *ripcmds[RIPCMD_MAX] =
                     49:   { "#0", "REQUEST", "RESPONSE" };
                     50: #endif
                     51: 
                     52: #define        HOPCNT_INFINITY         16              /* per Xerox NS */
                     53: #define        DSTNETS_ALL             0xffffffff      /* per Xerox NS */
                     54: #define        MAXPACKETSIZE           512             /* max broadcast size */
                     55: 
                     56: extern union ns_net ns_anynet;
                     57: extern union ns_net ns_zeronet;
                     58: 
                     59: /*
                     60:  * Timer values used in managing the routing table.
                     61:  * Every update forces an entry's timer to be reset.  After
                     62:  * EXPIRE_TIME without updates, the entry is marked invalid,
                     63:  * but held onto until GARBAGE_TIME so that others may
                     64:  * see it "be deleted".
                     65:  */
                     66: #define        TIMER_RATE              30      /* alarm clocks every 30 seconds */
                     67: 
                     68: #define        SUPPLY_INTERVAL         30      /* time to supply tables */
                     69: 
                     70: #define        EXPIRE_TIME             180     /* time to mark entry invalid */
                     71: #define        GARBAGE_TIME            240     /* time to garbage collect */

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