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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1996-1997 The 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 Network Research
* Group at Lawrence Berkeley National 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.
*
* @(#) $Header: /cvsroot/nsnam/ns-2/link/delay.h,v 1.16 2003/04/01 01:15:01 sfloyd Exp $ (LBL)
*/
#ifndef ns_delay_h
#define ns_delay_h
#include <assert.h>
#include "packet.h"
#include "queue.h"
#include "ip.h"
#include "connector.h"
class LinkDelay : public Connector {
public:
LinkDelay();
void recv(Packet* p, Handler*);
void send(Packet* p, Handler*);
void handle(Event* e);
double delay() { return delay_; }
inline double txtime(Packet* p) {
return (8. * hdr_cmn::access(p)->size() / bandwidth_);
}
double bandwidth() const { return bandwidth_; }
void pktintran(int src, int group);
protected:
int command(int argc, const char*const* argv);
void reset();
double bandwidth_; /* bandwidth of underlying link (bits/sec) */
double delay_; /* line latency */
Event intr_;
int dynamic_; /* indicates whether or not link is ~ */
double latest_time_; /* latest scheduled packet time, for use
* with avoidReordering_ */
PacketQueue* itq_;
int total_[4];
int avoidReordering_; /* indicates whether or not to avoid
* reordering when link bandwidth or delay
* changes */
};
#endif
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