//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/.
//
/* Author: Kewin Rausch (kewin.rausch@create-net.org) */
#ifndef __RINA_DISTANCEVECTORPOLICY_H
#define __RINA_DISTANCEVECTORPOLICY_H
#include <omnetpp.h>
#include "PDUFTGPolicy.h"
#define PDUFTG_SELFMSG_FSUPDATE 0x01
// This implements a basic distance-vector routing policy.
// The metric used is in term of hops.
//
class DistanceVectorPolicy :
public PDUFTGPolicy
{
private:
/* msec between updates. */
unsigned int updateT;
// Just prepare an update fo a destination host.
PDUFTGUpdate * prepareFSUpdate(Address destination);
protected:
void handleMessage(cMessage *msg);
void initialize();
public:
DistanceVectorPolicy();
~DistanceVectorPolicy();
// Computes the initial state of the forwarding table.
//
void computeForwardingTable();
// Evaluated in term of policy defined flow if a flow exists.
//
virtual PDUFTGInfo * flowExists(Address addr, unsigned short qos);
/* Get the update timer actual tick value.
*/
unsigned int getUpdateTimeout();
// Insert a new flow which has been open locally to this IPC Process.
//
void insertNewFlow(Address addr, short unsigned int qos, RMTPort * port);
// Merge an incoming information with the existing ones.
//
void mergeForwardingInfo(PDUFTGUpdate * info);
// Removes a local opened flow.
//
virtual void removeFlow(Address addr, short unsigned int qos);
/* Set a new timeout between an update message and another, in seconds.
*/
void setUpdateTimeout(unsigned int sec);
};
#endif // __RINA_DISTANCEVECTORPOLICY_H