routingtable.h

ucsb大学开发的aodv路由协议代码。

/*
 * Copyright (C) 2001, University of California, Santa Barbara
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 * Other copyrights might apply to parts of this software and are so
 * noted when applicable.
 */

/*
 * Parts of this program has been derived from PIM sparse-mode pimd.
 * The pimd program is covered by the license in the accompanying file
 * named "LICENSE.pimd".
 *  
 * The pimd program is COPYRIGHT 1998 by University of Southern California.
 *
 */
#ifndef _ROUTING_TABLE_H
#define _ROUTING_TABLE_H

#include <sys/types.h>

#include "routingTableEntry.h"
#include "rerr.h"
#include "rrep.h"
#include "rreq.h"

extern u_int32_t getDestinationSeqNum(u_int32_t dest);
extern void incrementDestSeqNum(u_int32_t dest);
extern struct RoutingTableEntry *getRoute(u_int32_t dest);
extern u_int32_t getTTL(u_int32_t dest);

extern void updateReverseRoute(u_int32_t src
			       , struct RREQ *rreq);
extern void updateRoute(u_int32_t dest
			, struct RREP *rrep);

extern int haveActiveRoute(u_int32_t dest, u_int32_t destSeqNum);
extern int getHopCount(u_int32_t dest);
extern u_int32_t getNextHop(u_int32_t dest);
extern void addPrecursor(u_int32_t dest, u_int32_t dest_to_add);

extern u_int32_t getTime();
extern u_int32_t getLifetime(u_int32_t dest);
extern void updateLifetime(u_int32_t dest
			   , u_int32_t lifetime);

extern void expireRoutes();

extern void removeBrokenFromPrecursors(u_int32_t broken);
extern void appendUnreachables(struct RERR *rerr, u_int32_t broken);
extern int processRERR(u_int32_t src, struct RERR *rerr, struct RERR *newrerr);

extern u_int32_t getTime();

extern int routeUsed(u_int32_t dest);

extern int isNextHop(u_int32_t dest);

extern struct RoutingTableEntry *getRoute(u_int32_t dest);

extern void printRoutingTable();

extern void updateNeighbor(u_int32_t neighbor, u_int32_t seqNum);
#define DELETE_ROUTE 255
#endif //_ROUTING_TABLE_H