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