00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 /* 00003 * Copyright (c) 1997 The Regents of the University of California. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. All advertising materials mentioning features or use of this software 00015 * must display the following acknowledgement: 00016 * This product includes software developed by the Network Research 00017 * Group at Lawrence Berkeley National Laboratory. 00018 * 4. Neither the name of the University nor of the Laboratory may be used 00019 * to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00023 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00028 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00029 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00032 * SUCH DAMAGE. 00033 * 00034 * @(#) /home/ctk21/cvsroot//hssstcp/ns/ns-2.1b9/tcp/tcp-fack.h,v 1.2 2002/08/12 10:44:38 ctk21 Exp (LBL) 00035 */ 00036 00037 #ifndef ns_tcp_fack_h 00038 #define ns_tcp_fack_h 00039 00040 #include "tcp.h" 00041 #include "scoreboard.h" 00042 00043 #define TRUE 1 00044 #define FALSE 0 00045 #define RECOVER_DUPACK 1 00046 #define RECOVER_TIMEOUT 2 00047 #define RECOVER_QUENCH 3 00048 00049 /* TCP Fack */ 00050 class FackTcpAgent : public TcpAgent { 00051 public: 00052 FackTcpAgent(); 00053 virtual ~FackTcpAgent(); 00054 virtual void recv(Packet *pkt, Handler*); 00055 virtual void timeout(int tno); 00056 virtual void opencwnd(); 00057 virtual int window(); 00058 void oldack (Packet* pkt); 00059 int maxsack (Packet* pkt); 00060 void plot(); 00061 void reset(); 00062 virtual void send_much(int force, int reason, int maxburst = 0); 00063 virtual void recv_newack_helper(Packet* pkt); 00064 protected: 00065 u_char timeout_; /* flag: sent pkt from timeout; */ 00066 u_char fastrecov_; /* flag: in fast recovery */ 00067 double wintrim_; 00068 double wintrimmult_; 00069 int rampdown_; 00070 int fack_; 00071 int retran_data_; 00072 int ss_div4_; 00073 00074 ScoreBoard* scb_; 00075 static const int SBSIZE=1024; 00076 }; 00077 00078 00079 #endif
1.7.1