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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1997 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 Daedalus Research
* Group at the University of California Berkeley.
* 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.
*
* Contributed by the Daedalus Research Group, U.C.Berkeley
* http://daedalus.cs.berkeley.edu
*/
#ifndef ns_tcp_fs_h
#define ns_tcp_fs_h
#include "tcp.h"
#include "ip.h"
#include "flags.h"
#include "random.h"
#include "template.h"
#include "tcp-fack.h"
class ResetTimer : public TimerHandler {
public:
ResetTimer(TcpAgent *a) : TimerHandler() { a_ = a; }
protected:
virtual void expire(Event *e);
TcpAgent *a_;
};
/* TCP-FS with Tahoe */
class TcpFsAgent : public virtual TcpAgent {
public:
TcpFsAgent() : t_exact_srtt_(0), t_exact_rttvar_(0), last_recv_time_(0),
fs_startseq_(0), fs_endseq_(0), fs_mode_(0), count_bytes_acked_(0),
reset_timer_(this)
{
bind_bool("fast_loss_recov_", &fast_loss_recov_);
bind_bool("fast_reset_timer_", &fast_reset_timer_);
bind_bool("count_bytes_acked_", &count_bytes_acked_);
bind_bool("fs_enable_", &fs_enable_);
}
/* helper functions */
virtual void output_helper(Packet* pkt);
virtual void recv_helper(Packet* pkt);
virtual void send_helper(int maxburst);
virtual void send_idle_helper();
virtual void recv_newack_helper(Packet* pkt);
virtual void partialnewack_helper(Packet*) {};
virtual void set_rtx_timer();
virtual void cancel_rtx_timer();
virtual void cancel_timers();
virtual void timeout_nonrtx(int tno);
virtual void timeout_nonrtx_helper(int tno);
double rtt_exact_timeout() { return (t_exact_srtt_ + 4*t_exact_rttvar_);}
protected:
double t_exact_srtt_;
double t_exact_rttvar_;
double last_recv_time_;
int fs_startseq_;
int fs_endseq_;
int fs_mode_;
int fs_enable_;
int fast_loss_recov_;
int fast_reset_timer_;
int count_bytes_acked_;
ResetTimer reset_timer_;
};
/* TCP-FS with Reno */
class RenoTcpFsAgent : public RenoTcpAgent, public TcpFsAgent {
public:
RenoTcpFsAgent() : RenoTcpAgent(), TcpFsAgent() {}
/* helper functions */
virtual void output_helper(Packet* pkt) {TcpFsAgent::output_helper(pkt);}
virtual void recv_helper(Packet* pkt) {TcpFsAgent::recv_helper(pkt);}
virtual void send_helper(int maxburst) {TcpFsAgent::send_helper(maxburst);}
virtual void send_idle_helper() {TcpFsAgent::send_idle_helper();}
virtual void recv_newack_helper(Packet* pkt) {TcpFsAgent::recv_newack_helper(pkt);}
virtual void set_rtx_timer() {TcpFsAgent::set_rtx_timer();}
virtual void cancel_rtx_timer() {TcpFsAgent::cancel_rtx_timer();}
virtual void cancel_timers(){TcpFsAgent::cancel_timers();}
virtual void timeout_nonrtx(int tno) {TcpFsAgent::timeout_nonrtx(tno);}
virtual void timeout_nonrtx_helper(int tno);
};
/* TCP-FS with NewReno */
class NewRenoTcpFsAgent : public virtual NewRenoTcpAgent, public TcpFsAgent {
public:
NewRenoTcpFsAgent() : NewRenoTcpAgent(), TcpFsAgent() {}
/* helper functions */
virtual void output_helper(Packet* pkt) {TcpFsAgent::output_helper(pkt);}
virtual void recv_helper(Packet* pkt) {TcpFsAgent::recv_helper(pkt);}
virtual void send_helper(int maxburst) {TcpFsAgent::send_helper(maxburst);}
virtual void send_idle_helper() {TcpFsAgent::send_idle_helper();}
virtual void recv_newack_helper(Packet* pkt) {TcpFsAgent::recv_newack_helper(pkt);}
virtual void partialnewack_helper(Packet* pkt);
virtual void set_rtx_timer() {TcpFsAgent::set_rtx_timer();}
virtual void cancel_rtx_timer() {TcpFsAgent::cancel_rtx_timer();}
virtual void cancel_timers(){TcpFsAgent::cancel_timers();}
virtual void timeout_nonrtx(int tno) {TcpFsAgent::timeout_nonrtx(tno);}
virtual void timeout_nonrtx_helper(int tno);
};
#ifdef USE_FACK
/* TCP-FS with Fack */
class FackTcpFsAgent : public FackTcpAgent, public TcpFsAgent {
public:
FackTcpFsAgent() : FackTcpAgent(), TcpFsAgent() {}
/* helper functions */
virtual void output_helper(Packet* pkt) {TcpFsAgent::output_helper(pkt);}
virtual void recv_helper(Packet* pkt) {TcpFsAgent::recv_helper(pkt);}
virtual void send_helper(int maxburst);
virtual void send_idle_helper() {TcpFsAgent::send_idle_helper();}
virtual void recv_newack_helper(Packet* pkt) {TcpFsAgent::recv_newack_helper(pkt);}
virtual void set_rtx_timer() {TcpFsAgent::set_rtx_timer();}
virtual void cancel_rtx_timer() {TcpFsAgent::cancel_rtx_timer();}
virtual void cancel_timers(){TcpFsAgent::cancel_timers();}
virtual void timeout_nonrtx(int tno) {TcpFsAgent::timeout_nonrtx(tno);}
virtual void timeout_nonrtx_helper(int tno);
};
#endif
#endif
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