/* -*-	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