qsagent.h
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- /*
- * qsagent.h
- * Copyright (C) 2001 by the University of Southern California
- * $Id: qsagent.h,v 1.5 2006/02/22 20:35:37 sallyfloyd 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.
- *
- */
- /*
- * Quick Start for TCP and IP.
- * A scheme for transport protocols to dynamically determine initial
- * congestion window size.
- *
- * http://www.ietf.org/internet-drafts/draft-amit-quick-start-02.ps
- *
- * This defines the Class for the Quick Start agent. "Agent/QSAgent"
- *
- * qsagent.h
- *
- * Srikanth Sundarrajan, 2002
- * sundarra@usc.edu
- */
- #ifndef _QSAGENT_H
- #define _QSAGENT_H
- #include <stdarg.h>
- #include "object.h"
- #include "agent.h"
- #include "packet.h"
- #include "hdr_qs.h"
- #include "timer-handler.h"
- #include "lib/bsd-list.h"
- #include "queue.h"
- #include "delay.h"
- class QSAgent;
- class QSTimer: public TimerHandler {
- public:
- QSTimer(QSAgent * qs_handle) : TimerHandler() { qs_handle_ = qs_handle; }
- virtual void expire(Event * e);
- protected:
- QSAgent * qs_handle_;
- };
- class Agent;
- class QSAgent : public Agent{
- public:
- virtual int command(int argc, const char*const* argv);
- virtual void recv(Packet*, Handler* callback = 0);
- TclObject * old_classifier_;
- int qs_enabled_;
- int algorithm_; // QS request processing algorithm
- // 3 for the recommended algorithm.
- double state_delay_;
- double alloc_rate_;
- double threshold_; // for algorithm_ 3, utilized bandwidth
- // must be less than threshold.
- int max_rate_; // maximum rate for one rate request, for some
- // quickstart algorithms (but not for #3)
- int mss_;
- /*
- * 1: Bps = rate * 10 KB
- * 2: Bps = 2 ^ rate * 1024
- */
- static int rate_function_;
- QSTimer qs_timer_;
- QSAgent();
- ~QSAgent();
- double aggr_approval_;
- double prev_int_aggr_;
- protected:
- double process(LinkDelay *link, Queue *queue, double ratereq);
- };
- #endif // _QSAGENT_H