00001 00002 /* 00003 * hdr_qs.h 00004 * Copyright (C) 2001 by the University of Southern California 00005 * $Id: hdr_qs.h,v 1.6 2005/08/25 18:58:10 johnh Exp $ 00006 * 00007 * This program is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU General Public License, 00009 * version 2, as published by the Free Software Foundation. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License along 00017 * with this program; if not, write to the Free Software Foundation, Inc., 00018 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 00019 * 00020 * 00021 * The copyright of this module includes the following 00022 * linking-with-specific-other-licenses addition: 00023 * 00024 * In addition, as a special exception, the copyright holders of 00025 * this module give you permission to combine (via static or 00026 * dynamic linking) this module with free software programs or 00027 * libraries that are released under the GNU LGPL and with code 00028 * included in the standard release of ns-2 under the Apache 2.0 00029 * license or under otherwise-compatible licenses with advertising 00030 * requirements (or modified versions of such code, with unchanged 00031 * license). You may copy and distribute such a system following the 00032 * terms of the GNU GPL for this module and the licenses of the 00033 * other code concerned, provided that you include the source code of 00034 * that other code when and as the GNU GPL requires distribution of 00035 * source code. 00036 * 00037 * Note that people who make modified versions of this module 00038 * are not obligated to grant this special exception for their 00039 * modified versions; it is their choice whether to do so. The GNU 00040 * General Public License gives permission to release a modified 00041 * version without this exception; this exception also makes it 00042 * possible to release a modified version which carries forward this 00043 * exception. 00044 * 00045 */ 00046 00047 /* 00048 * Quick Start for TCP and IP. 00049 * A scheme for transport protocols to dynamically determine initial 00050 * congestion window size. 00051 * 00052 * http://www.ietf.org/internet-drafts/draft-amit-quick-start-02.ps 00053 * 00054 * This defines the Quick Start packet header 00055 * 00056 * hdr_qs.h 00057 * 00058 * Srikanth Sundarrajan, 2002 00059 * sundarra@usc.edu 00060 */ 00061 00062 #ifndef _HDR_QS_H 00063 #define _HDR_QS_H 00064 00065 #include <assert.h> 00066 #include <packet.h> 00067 00068 //#define QS_DEBUG 1 // get some output on QS events -PS 00069 00070 enum QS_STATE { QS_DISABLE, QS_REQUEST, QS_RESPONSE }; 00071 00072 struct hdr_qs { 00073 00074 int flag_; // use QS_STATE 00075 int ttl_; 00076 int rate_; 00077 00078 static double rate_to_Bps(int rate); 00079 static int Bps_to_rate(double Bps); 00080 00081 static int offset_; // offset for this header 00082 inline int& offset() { return offset_; } 00083 00084 inline static hdr_qs* access(Packet* p) { 00085 return (hdr_qs*) p->access(offset_); 00086 } 00087 00088 int& flag() { return flag_; } 00089 int& ttl() { return ttl_; } 00090 int& rate() { return rate_; } 00091 }; 00092 00093 // Local Variables: 00094 // mode:c++ 00095 // c-basic-offset: 8 00096 // End: 00097 #endif 00098
1.7.1