dewp.h
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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