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/*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Authors: Nathan Binkert
*/
/* @file
* Class representing the actual interface between two ethernet
* components.
*/
#ifndef __DEV_ETHERINT_HH__
#define __DEV_ETHERINT_HH__
#include <string>
#include "dev/etherpkt.hh"
/*
* Class representing the actual interface between two ethernet
* components. These components are intended to attach to another
* ethernet interface on one side and whatever device on the other.
*/
class EtherInt
{
protected:
mutable std::string portName;
EtherInt *peer;
public:
EtherInt(const std::string &name)
: portName(name), peer(NULL) {}
virtual ~EtherInt() {}
/** Return port name (for DPRINTF). */
const std::string &name() const { return portName; }
void setPeer(EtherInt *p);
EtherInt* getPeer() { return peer; }
void recvDone() { peer->sendDone(); }
virtual void sendDone() = 0;
bool sendPacket(EthPacketPtr packet)
{ return peer ? peer->recvPacket(packet) : true; }
virtual bool recvPacket(EthPacketPtr packet) = 0;
bool askBusy() {return peer->isBusy(); }
virtual bool isBusy() { return false; }
};
#endif // __DEV_ETHERINT_HH__
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