00001 00002 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00003 /* 00004 * Copyright (c) 1994 Regents of the University of California. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 1. Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * 2. Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in the 00014 * documentation and/or other materials provided with the distribution. 00015 * 3. All advertising materials mentioning features or use of this software 00016 * must display the following acknowledgement: 00017 * This product includes software developed by the Computer Systems 00018 * Engineering Group at Lawrence Berkeley Laboratory. 00019 * 4. Neither the name of the University nor of the Laboratory may be used 00020 * to endorse or promote products derived from this software without 00021 * specific prior written permission. 00022 * 00023 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00024 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00025 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00026 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00027 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00028 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00029 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00030 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00031 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00032 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00033 * SUCH DAMAGE. 00034 * 00035 */ 00036 00037 #ifndef ns_gk_h 00038 #define ns_gk_h 00039 00040 #include <string.h> 00041 #include "queue.h" 00042 00043 class LinkDelay; 00044 00045 class GK : public Queue { 00046 public: 00047 GK(const char *); 00048 protected: 00049 int command(int argc, const char*const* argv); 00050 void enque(Packet*); 00051 Packet* deque(); 00052 void deque_vq(); /* Deques from the virtual queue_ */ 00053 LinkDelay* link_; /* outgoing link */ 00054 PacketQueue *q_; /* underlying FIFO queue */ 00055 int drop_front_; /* drop-from-front (rather than from tail) */ 00056 double ecnlim_; /* Factor by which capacity and buffer is acled down*/ 00057 double vq_len; /* Virtual Queue length */ 00058 double c_; /* Capacity of the link */ 00059 int mark_flag; /* Indicates that all outgoing packets shd be marked */ 00060 double prev_time; 00061 double curr_time; 00062 int mean_pktsize_; 00063 TracedInt curq_; /* current qlen seen by arrivals */ 00064 00065 // added to be able to trace EDrop Objects 00066 // the other events - forced drop, enque and deque are traced by a 00067 // different mechanism. 00068 NsObject * EDTrace; //early drop trace 00069 char traceType[20]; /* the preferred type for early drop trace. 00070 better be less than 19 chars long */ 00071 Tcl_Channel tchan_; /* place to write trace records */ 00072 void trace(TracedVar*); /* routine to write trace records */ 00073 }; 00074 00075 #endif
1.7.1