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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1997 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Network Research
* Group at Lawrence Berkeley National Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#) /home/ctk21/cvsroot//hssstcp/ns/ns-2.1b9/tcp/tcp-fack.h,v 1.2 2002/08/12 10:44:38 ctk21 Exp (LBL)
*/
#ifndef ns_tcp_fack_h
#define ns_tcp_fack_h
#include "tcp.h"
#include "scoreboard.h"
#define TRUE 1
#define FALSE 0
#define RECOVER_DUPACK 1
#define RECOVER_TIMEOUT 2
#define RECOVER_QUENCH 3
/* TCP Fack */
class FackTcpAgent : public TcpAgent {
public:
FackTcpAgent();
virtual ~FackTcpAgent();
virtual void recv(Packet *pkt, Handler*);
virtual void timeout(int tno);
virtual void opencwnd();
virtual int window();
void oldack (Packet* pkt);
int maxsack (Packet* pkt);
void plot();
void reset();
virtual void send_much(int force, int reason, int maxburst = 0);
virtual void recv_newack_helper(Packet* pkt);
protected:
u_char timeout_; /* flag: sent pkt from timeout; */
u_char fastrecov_; /* flag: in fast recovery */
double wintrim_;
double wintrimmult_;
int rampdown_;
int fack_;
int retran_data_;
int ss_div4_;
ScoreBoard* scb_;
static const int SBSIZE=1024;
};
#endif
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