rem.h
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1990-1997 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 Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 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.
- *
- *
- * ns-2 code written by: Sanjeewa Athuraliya and Victor Li
- * Caltech, Pasadena
- * CA.
- */
- #ifndef ns_rem_h
- #define ns_rem_h
- #include "queue.h"
- #include <stdlib.h>
- #include "agent.h"
- #include "template.h"
- class LinkDelay;
- class REMQueue;
- /*
- * REM parameters, supplied by user
- */
- struct remp {
- /*
- * User supplied.
- */
- double p_inw; /* queue weight given to cur q size sample */
- double p_gamma;
- double p_phi;
- double p_delta;
- double p_pktsize;
- double p_updtime;
- double p_bo;
- /*
- * Computed as a function of user supplied parameters.
- */
- double p_ptc;
- };
- /*
- * REM variables, maintained by REM
- */
- struct remv {
- TracedDouble v_pl; /* link price */
- TracedDouble v_prob; /* prob. of packet marking. */
- double v_in; /* used in computing the input rate */
- double v_ave;
- double v_count;
- double v_pl1;
- double v_pl2;
- double v_in1;
- double v_in2;
- remv() : v_pl(0.0), v_prob(0.0), v_in(0.0), v_ave(0.0), v_count(0.0){ }
- };
- class REMTimer : public TimerHandler {
- public:
- REMTimer (REMQueue *a) : TimerHandler() { a_ = a; }
- protected:
- virtual void expire (Event *e);
- REMQueue *a_;
- };
- class REMQueue : public Queue {
- public:
- REMQueue();
- void set_update_timer();
- void timeout();
- protected:
- int command(int argc, const char*const* argv);
- void enque(Packet* pkt);
- Packet* deque();
- void reset();
- void run_updaterule();
- LinkDelay* link_; /* outgoing link */
- PacketQueue *q_; /* underlying (usually) FIFO queue */
-
- Tcl_Channel tchan_; /* Place to write trace records */
- TracedInt curq_; /* current qlen seen by arrivals */
- void trace(TracedVar*); /* routine to write trace records */
- REMTimer rem_timer_;
- /*
- * Static state.
- */
- double pmark_; //number of packets being marked
- remp remp_; /* early-drop params */
- /*
- * Dynamic state.
- */
- remv remv_; /* early-drop variables */
- int markpkts_ ;
- int bcount_;
- int qib_;
- void print_remp(); // for debugging
- void print_remv(); // for debugging
- };
- #endif