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Annotation of 43BSD/etc/XNSrouted/protocol.h, revision 1.1

1.1     ! root        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 */

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