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/*
* dewp.h
* Copyright (C) 1999 by the University of Southern California
* $Id: dewp.h,v 1.2 2005/08/25 18:58:03 johnh Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* 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.
*
*
* The copyright of this module includes the following
* linking-with-specific-other-licenses addition:
*
* In addition, as a special exception, the copyright holders of
* this module give you permission to combine (via static or
* dynamic linking) this module with free software programs or
* libraries that are released under the GNU LGPL and with code
* included in the standard release of ns-2 under the Apache 2.0
* license or under otherwise-compatible licenses with advertising
* requirements (or modified versions of such code, with unchanged
* license). You may copy and distribute such a system following the
* terms of the GNU GPL for this module and the licenses of the
* other code concerned, provided that you include the source code of
* that other code when and as the GNU GPL requires distribution of
* source code.
*
* Note that people who make modified versions of this module
* are not obligated to grant this special exception for their
* modified versions; it is their choice whether to do so. The GNU
* General Public License gives permission to release a modified
* version without this exception; this exception also makes it
* possible to release a modified version which carries forward this
* exception.
*
*/
//
// dewp.h (Early worm propagation detection)
// by Xuan Chen (xuanc@isi.edu), USC/ISI
#ifndef DEWP_H
#define DEWP_H
#include "packet.h"
#include "dsPolicy.h"
#define DT_INV 2
#define DB_INV DT_INV
#define P_LEN 65536
// list to store addresses
struct AddrEntry {
unsigned int addr;
struct AddrEntry *next;
};
// List for blocked port
struct BPEntry {
int s, b;
int anum, last_anum, avg_anum;
double last_time;
struct AddrEntry *aset;
};
// Eearly worm propagation detection policy
class DEWPPolicy : public Policy {
public:
DEWPPolicy();
~DEWPPolicy();
void init(double);
// Metering and policing methods:
void applyMeter(policyTableEntry *policy, Packet *pkt);
int applyPolicer(policyTableEntry *policy, policerTableEntry *policer, Packet *pkt);
// make packet drop decisions
int dropPacket(Packet *);
// detect if there is an alarm triggered
void detect(Packet *pkt);
// couple in- and out-bound queues
void couple(DEWPPolicy *);
//protected:
DEWPPolicy *cdewp;
double dport_list[P_LEN];
static BPEntry *bport_list;
private:
// The current time
double now;
// commom paramters
// detection interval
static double dt_inv_;
// change tolerance
static double beta;
// gain
static double alpha;
// absolute threshold to filter out some small values (num/s)
static int anum_th;
};
//int *DEWPPolicy::bport_list = NULL;
#endif
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