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| 1 | /*- |
|---|---|
| 2 | * Copyright (c) 1983, 1989, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 4. Neither the name of the University nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | * |
| 29 | * @(#)routed.h 8.1 (Berkeley) 6/2/93 |
| 30 | */ |
| 31 | |
| 32 | #ifndef _PROTOCOLS_ROUTED_H |
| 33 | #define _PROTOCOLS_ROUTED_H 1 |
| 34 | |
| 35 | #include <sys/socket.h> |
| 36 | /* |
| 37 | * Routing Information Protocol |
| 38 | * |
| 39 | * Derived from Xerox NS Routing Information Protocol |
| 40 | * by changing 32-bit net numbers to sockaddr's and |
| 41 | * padding stuff to 32-bit boundaries. |
| 42 | */ |
| 43 | #define RIPVERSION 1 |
| 44 | |
| 45 | struct netinfo { |
| 46 | struct sockaddr rip_dst; /* destination net/host */ |
| 47 | int rip_metric; /* cost of route */ |
| 48 | }; |
| 49 | |
| 50 | struct rip { |
| 51 | unsigned char rip_cmd; /* request/response */ |
| 52 | unsigned char rip_vers; /* protocol version # */ |
| 53 | unsigned char rip_res1[2]; /* pad to 32-bit boundary */ |
| 54 | union { |
| 55 | struct netinfo ru_nets[1]; /* variable length... */ |
| 56 | char ru_tracefile[1]; /* ditto ... */ |
| 57 | } ripun; |
| 58 | #define rip_nets ripun.ru_nets |
| 59 | #define rip_tracefile ripun.ru_tracefile |
| 60 | }; |
| 61 | |
| 62 | /* |
| 63 | * Packet types. |
| 64 | */ |
| 65 | #define RIPCMD_REQUEST 1 /* want info */ |
| 66 | #define RIPCMD_RESPONSE 2 /* responding to request */ |
| 67 | #define RIPCMD_TRACEON 3 /* turn tracing on */ |
| 68 | #define RIPCMD_TRACEOFF 4 /* turn it off */ |
| 69 | |
| 70 | #define RIPCMD_MAX 5 |
| 71 | #ifdef RIPCMDS |
| 72 | char *ripcmds[RIPCMD_MAX] = |
| 73 | { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" }; |
| 74 | #endif |
| 75 | |
| 76 | #define HOPCNT_INFINITY 16 /* per Xerox NS */ |
| 77 | #define MAXPACKETSIZE 512 /* max broadcast size */ |
| 78 | |
| 79 | /* |
| 80 | * Timer values used in managing the routing table. |
| 81 | * Complete tables are broadcast every SUPPLY_INTERVAL seconds. |
| 82 | * If changes occur between updates, dynamic updates containing only changes |
| 83 | * may be sent. When these are sent, a timer is set for a random value |
| 84 | * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates |
| 85 | * are sent until the timer expires. |
| 86 | * |
| 87 | * Every update of a routing entry forces an entry's timer to be reset. |
| 88 | * After EXPIRE_TIME without updates, the entry is marked invalid, |
| 89 | * but held onto until GARBAGE_TIME so that others may |
| 90 | * see it "be deleted". |
| 91 | */ |
| 92 | #define TIMER_RATE 30 /* alarm clocks every 30 seconds */ |
| 93 | |
| 94 | #define SUPPLY_INTERVAL 30 /* time to supply tables */ |
| 95 | #define MIN_WAITTIME 2 /* min. interval to broadcast changes */ |
| 96 | #define MAX_WAITTIME 5 /* max. time to delay changes */ |
| 97 | |
| 98 | #define EXPIRE_TIME 180 /* time to mark entry invalid */ |
| 99 | #define GARBAGE_TIME 240 /* time to garbage collect */ |
| 100 | |
| 101 | #endif /* protocols/routed.h */ |
| 102 |
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