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Diffstat (limited to 'inet/protocols/routed.h')
| -rw-r--r-- | inet/protocols/routed.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/inet/protocols/routed.h b/inet/protocols/routed.h new file mode 100644 index 0000000..f41fc21 --- /dev/null +++ b/inet/protocols/routed.h @@ -0,0 +1,104 @@ +/*- + * Copyright (c) 1983, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)routed.h 8.1 (Berkeley) 6/2/93 + */ + +#ifndef _ROUTED_H_ +#define _ROUTED_H_ + +/* + * Routing Information Protocol + * + * Derived from Xerox NS Routing Information Protocol + * by changing 32-bit net numbers to sockaddr's and + * padding stuff to 32-bit boundaries. + */ +#define RIPVERSION 1 + +struct netinfo { + struct sockaddr rip_dst; /* destination net/host */ + int rip_metric; /* cost of route */ +}; + +struct rip { + u_char rip_cmd; /* request/response */ + u_char rip_vers; /* protocol version # */ + u_char rip_res1[2]; /* pad to 32-bit boundary */ + union { + struct netinfo ru_nets[1]; /* variable length... */ + char ru_tracefile[1]; /* ditto ... */ + } ripun; +#define rip_nets ripun.ru_nets +#define rip_tracefile ripun.ru_tracefile +}; + +/* + * Packet types. + */ +#define RIPCMD_REQUEST 1 /* want info */ +#define RIPCMD_RESPONSE 2 /* responding to request */ +#define RIPCMD_TRACEON 3 /* turn tracing on */ +#define RIPCMD_TRACEOFF 4 /* turn it off */ + +#define RIPCMD_MAX 5 +#ifdef RIPCMDS +char *ripcmds[RIPCMD_MAX] = + { "#0", "REQUEST", "RESPONSE", "TRACEON", "TRACEOFF" }; +#endif + +#define HOPCNT_INFINITY 16 /* per Xerox NS */ +#define MAXPACKETSIZE 512 /* max broadcast size */ + +/* + * Timer values used in managing the routing table. + * Complete tables are broadcast every SUPPLY_INTERVAL seconds. + * If changes occur between updates, dynamic updates containing only changes + * may be sent. When these are sent, a timer is set for a random value + * between MIN_WAITTIME and MAX_WAITTIME, and no additional dynamic updates + * are sent until the timer expires. + * + * Every update of a routing entry forces an entry's timer to be reset. + * After EXPIRE_TIME without updates, the entry is marked invalid, + * but held onto until GARBAGE_TIME so that others may + * see it "be deleted". + */ +#define TIMER_RATE 30 /* alarm clocks every 30 seconds */ + +#define SUPPLY_INTERVAL 30 /* time to supply tables */ +#define MIN_WAITTIME 2 /* min. interval to broadcast changes */ +#define MAX_WAITTIME 5 /* max. time to delay changes */ + +#define EXPIRE_TIME 180 /* time to mark entry invalid */ +#define GARBAGE_TIME 240 /* time to garbage collect */ + +#endif /* !_ROUTED_H_ */ |