tcp-fs.h
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:6k
- /* -*- 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