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-/*
- * Copyright (c) 2003-2005 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
- * Interface to connect a simulated ethernet device to the real world
- */
-
-#ifndef __ETHERTAP_HH__
-#define __ETHERTAP_HH__
-
-#include <queue>
-#include <string>
-
-#include "base/pollevent.hh"
-#include "dev/etherint.hh"
-#include "dev/etherobject.hh"
-#include "dev/etherpkt.hh"
-#include "params/EtherTap.hh"
-#include "sim/eventq.hh"
-#include "sim/sim_object.hh"
-
-class TapEvent;
-class TapListener;
-class EtherTapInt;
-
-/*
- * Interface to connect a simulated ethernet device to the real world
- */
-class EtherTap : public EtherObject
-{
- protected:
- friend class TapEvent;
- TapEvent *event;
-
- protected:
- friend class TapListener;
- TapListener *listener;
- int socket;
- char *buffer;
- int buflen;
- uint32_t buffer_offset;
- uint32_t data_len;
-
- EtherDump *dump;
-
- void attach(int fd);
- void detach();
-
- protected:
- std::string device;
- std::queue<EthPacketPtr> packetBuffer;
- EtherTapInt *interface;
-
- void process(int revent);
- void enqueue(EthPacketData *packet);
- void retransmit();
-
- /*
- */
- class TxEvent : public Event
- {
- protected:
- EtherTap *tap;
-
- public:
- TxEvent(EtherTap *_tap) : tap(_tap) {}
- void process() { tap->retransmit(); }
- virtual const char *description() const
- { return "EtherTap retransmit"; }
- };
-
- friend class TxEvent;
- TxEvent txEvent;
-
- public:
- typedef EtherTapParams Params;
- EtherTap(const Params *p);
- virtual ~EtherTap();
-
- const Params *
- params() const
- {
- return dynamic_cast<const Params *>(_params);
- }
-
- EtherInt *getEthPort(const std::string &if_name, int idx) override;
-
- virtual bool recvPacket(EthPacketPtr packet);
- virtual void sendDone();
-
- void serialize(CheckpointOut &cp) const override;
- void unserialize(CheckpointIn &cp) override;
-};
-
-class EtherTapInt : public EtherInt
-{
- private:
- EtherTap *tap;
- public:
- EtherTapInt(const std::string &name, EtherTap *t)
- : EtherInt(name), tap(t)
- { }
-
- virtual bool recvPacket(EthPacketPtr pkt) { return tap->recvPacket(pkt); }
- virtual void sendDone() { tap->sendDone(); }
-};
-
-
-#endif // __ETHERTAP_HH__