tcp-abs.h
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (C) 1999 by the University of Southern California
- * $Id: tcp-abs.h,v 1.2 2005/08/25 18:58:12 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.
- *
- */
- /*
- * Contributed by Polly Huang (USC/ISI), http://www-scf.usc.edu/~bhuang
- * @(#) $Header: /cvsroot/nsnam/ns-2/tcp/tcp-abs.h,v 1.2 2005/08/25 18:58:12 johnh Exp $ (LBL)";
- */
- #include "agent.h"
- #include "fsm.h"
- class AbsTcpAgent;
- class AbsTcpTimer : public TimerHandler {
- public:
- AbsTcpTimer(AbsTcpAgent *a) : TimerHandler() { a_ = a; }
- protected:
- AbsTcpAgent *a_;
- void expire(Event *e);
- };
- class AbsTcpAgent : public Agent {
- public:
- AbsTcpAgent();
- void timeout();
- void sendmsg(int pktcnt);
- void advanceby(int pktcnt);
- void start();
- void send_batch();
- void drop(int seqno);
- void finish();
- void recv(Packet* pkt, Handler*);
- void output(int seqno);
- inline int& flowid() { return fid_; }
- int command(int argc, const char*const* argv);
- protected:
- double rtt_;
- FSMState* current_;
- int offset_;
- int seqno_lb_; // seqno when finishing last batch
- int connection_size_;
- AbsTcpTimer timer_;
- int rescheduled_;
- void cancel_timer() {
- timer_.force_cancel();
- }
- void set_timer(double time) {
- timer_.resched(time);
- }
- };
- class AbsTcpTahoeAckAgent : public AbsTcpAgent {
- public:
- AbsTcpTahoeAckAgent();
- };
- class AbsTcpRenoAckAgent : public AbsTcpAgent {
- public:
- AbsTcpRenoAckAgent();
- };
- class AbsTcpTahoeDelAckAgent : public AbsTcpAgent {
- public:
- AbsTcpTahoeDelAckAgent();
- };
- class AbsTcpRenoDelAckAgent : public AbsTcpAgent {
- public:
- AbsTcpRenoDelAckAgent();
- };
- //AbsTcpSink
- class AbsTcpSink : public Agent {
- public:
- AbsTcpSink();
- void recv(Packet* pkt, Handler*);
- protected:
- };
- class AbsDelAckSink;
- class AbsDelayTimer : public TimerHandler {
- public:
- AbsDelayTimer(AbsDelAckSink *a) : TimerHandler() { a_ = a; }
- protected:
- void expire(Event *e);
- AbsDelAckSink *a_;
- };
- class AbsDelAckSink : public AbsTcpSink {
- public:
- AbsDelAckSink();
- void recv(Packet* pkt, Handler*);
- void timeout();
- protected:
- Packet* save_; /* place to stash packet while delaying */
- double interval_;
- AbsDelayTimer delay_timer_;
- };
- // Dropper Class
- class Dropper {
- public:
- AbsTcpAgent* agent_;
- Dropper* next_;
- };
- class DropTargetAgent : public Connector {
- public:
- DropTargetAgent();
- void recv(Packet* pkt, Handler*);
- void insert_tcp(AbsTcpAgent* tcp);
- static DropTargetAgent& instance() {
- return (*instance_); // general access to TahoeAckFSM
- }
- protected:
- Dropper* dropper_list_;
- static DropTargetAgent* instance_;
- };