83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* @(#)routed.h 1.1 92/07/30 SMI; from UCB 5.1 6/4/85 */
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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/*
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* Routing Information Protocol
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*
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* Derived from Xerox NS Routing Information Protocol
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* by changing 32-bit net numbers to sockaddr's and
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* padding stuff to 32-bit boundaries.
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*/
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#ifndef _protocols_routed_h
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#define _protocols_routed_h
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#define RIPVERSION 1
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struct netinfo {
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struct sockaddr rip_dst; /* destination net/host */
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int rip_metric; /* cost of route */
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};
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struct rip {
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u_char rip_cmd; /* request/response */
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u_char rip_vers; /* protocol version # */
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u_char rip_res1[2]; /* pad to 32-bit boundary */
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union {
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struct netinfo ru_nets[1]; /* variable length... */
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char ru_tracefile[1]; /* ditto ... */
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} ripun;
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#define rip_nets ripun.ru_nets
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#define rip_tracefile ripun.ru_tracefile
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};
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struct entryinfo {
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struct sockaddr rtu_dst;
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struct sockaddr rtu_router;
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short rtu_flags;
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short rtu_state;
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int rtu_timer;
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int rtu_metric;
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int int_flags;
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char int_name[16];
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};
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/*
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* Packet types.
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*/
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#define RIPCMD_REQUEST 1 /* want info - from suppliers */
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#define RIPCMD_RESPONSE 2 /* responding to request */
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#define RIPCMD_TRACEON 3 /* turn tracing on */
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#define RIPCMD_TRACEOFF 4 /* turn it off */
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#define RIPCMD_POLL 5 /* like request, but anyone answers */
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#define RIPCMD_POLLENTRY 6 /* like poll, but for entire entry */
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#define RIPCMD_MAX 7
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#ifdef RIPCMDS
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char *ripcmds[RIPCMD_MAX] =
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{ "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF", "POLL", "POLLENTRY" };
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#endif
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#define HOPCNT_INFINITY 16 /* per Xerox NS */
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#define MAXPACKETSIZE 512 /* max broadcast size */
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/*
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* Timer values used in managing the routing table.
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* Every update forces an entry's timer to be reset. After
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* EXPIRE_TIME without updates, the entry is marked invalid,
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* but held onto until GARBAGE_TIME so that others may
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* see it "be deleted".
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*/
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#define TIMER_RATE 30 /* alarm clocks every 30 seconds */
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#define SUPPLY_INTERVAL 30 /* time to supply tables */
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#define EXPIRE_TIME 180 /* time to mark entry invalid */
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#define GARBAGE_TIME 240 /* time to garbage collect */
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#endif /*!_protocols_routed_h*/
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