ethertap.hh revision 1872
110448Snilay@cs.wisc.edu/* 210448Snilay@cs.wisc.edu * Copyright (c) 2003-2005 The Regents of The University of Michigan 310448Snilay@cs.wisc.edu * All rights reserved. 410448Snilay@cs.wisc.edu * 510448Snilay@cs.wisc.edu * Redistribution and use in source and binary forms, with or without 610448Snilay@cs.wisc.edu * modification, are permitted provided that the following conditions are 710448Snilay@cs.wisc.edu * met: redistributions of source code must retain the above copyright 810448Snilay@cs.wisc.edu * notice, this list of conditions and the following disclaimer; 910448Snilay@cs.wisc.edu * redistributions in binary form must reproduce the above copyright 1010448Snilay@cs.wisc.edu * notice, this list of conditions and the following disclaimer in the 1110448Snilay@cs.wisc.edu * documentation and/or other materials provided with the distribution; 1210448Snilay@cs.wisc.edu * neither the name of the copyright holders nor the names of its 1310448Snilay@cs.wisc.edu * contributors may be used to endorse or promote products derived from 1410448Snilay@cs.wisc.edu * this software without specific prior written permission. 1510448Snilay@cs.wisc.edu * 1610448Snilay@cs.wisc.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1710448Snilay@cs.wisc.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1810448Snilay@cs.wisc.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1910448Snilay@cs.wisc.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2010448Snilay@cs.wisc.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2110448Snilay@cs.wisc.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2210447Snilay@cs.wisc.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2310447Snilay@cs.wisc.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2410447Snilay@cs.wisc.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2510447Snilay@cs.wisc.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2610447Snilay@cs.wisc.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2710447Snilay@cs.wisc.edu */ 2810447Snilay@cs.wisc.edu 2910447Snilay@cs.wisc.edu/* @file 3010447Snilay@cs.wisc.edu * Interface to connect a simulated ethernet device to the real world 3110447Snilay@cs.wisc.edu */ 3210447Snilay@cs.wisc.edu 3310447Snilay@cs.wisc.edu#ifndef __ETHERTAP_HH__ 3410447Snilay@cs.wisc.edu#define __ETHERTAP_HH__ 3510447Snilay@cs.wisc.edu 3610447Snilay@cs.wisc.edu#include <queue> 3710447Snilay@cs.wisc.edu#include <string> 3810447Snilay@cs.wisc.edu 3910447Snilay@cs.wisc.edu#include "dev/etherint.hh" 4010447Snilay@cs.wisc.edu#include "dev/etherpkt.hh" 4110447Snilay@cs.wisc.edu#include "sim/eventq.hh" 4210447Snilay@cs.wisc.edu#include "base/pollevent.hh" 4310447Snilay@cs.wisc.edu#include "sim/sim_object.hh" 4410447Snilay@cs.wisc.edu 4510447Snilay@cs.wisc.educlass TapEvent; 4610447Snilay@cs.wisc.educlass TapListener; 4710447Snilay@cs.wisc.edu 4810447Snilay@cs.wisc.edu/* 4910447Snilay@cs.wisc.edu * Interface to connect a simulated ethernet device to the real world 5010447Snilay@cs.wisc.edu */ 5110447Snilay@cs.wisc.educlass EtherTap : public EtherInt 5210447Snilay@cs.wisc.edu{ 5310447Snilay@cs.wisc.edu protected: 5410447Snilay@cs.wisc.edu friend class TapEvent; 5510447Snilay@cs.wisc.edu TapEvent *event; 5610447Snilay@cs.wisc.edu 5710447Snilay@cs.wisc.edu protected: 5810447Snilay@cs.wisc.edu friend class TapListener; 5910447Snilay@cs.wisc.edu TapListener *listener; 6010447Snilay@cs.wisc.edu int socket; 6110447Snilay@cs.wisc.edu char *buffer; 6210447Snilay@cs.wisc.edu int buflen; 6310447Snilay@cs.wisc.edu int32_t buffer_offset; 6410447Snilay@cs.wisc.edu int32_t data_len; 6510447Snilay@cs.wisc.edu 6610447Snilay@cs.wisc.edu EtherDump *dump; 6710447Snilay@cs.wisc.edu 6810447Snilay@cs.wisc.edu void attach(int fd); 6910447Snilay@cs.wisc.edu void detach(); 7010447Snilay@cs.wisc.edu 7110447Snilay@cs.wisc.edu protected: 7210447Snilay@cs.wisc.edu std::string device; 7310447Snilay@cs.wisc.edu std::queue<PacketPtr> packetBuffer; 7410447Snilay@cs.wisc.edu 7510447Snilay@cs.wisc.edu void process(int revent); 7610447Snilay@cs.wisc.edu void enqueue(PacketData *packet); 7710447Snilay@cs.wisc.edu void retransmit(); 7810447Snilay@cs.wisc.edu 7910447Snilay@cs.wisc.edu /* 8010447Snilay@cs.wisc.edu */ 8110447Snilay@cs.wisc.edu class TxEvent : public Event 8210447Snilay@cs.wisc.edu { 8310447Snilay@cs.wisc.edu protected: 8410447Snilay@cs.wisc.edu EtherTap *tap; 8510447Snilay@cs.wisc.edu 8610447Snilay@cs.wisc.edu public: 8710447Snilay@cs.wisc.edu TxEvent(EtherTap *_tap) 8810447Snilay@cs.wisc.edu : Event(&mainEventQueue), tap(_tap) {} 8910447Snilay@cs.wisc.edu void process() { tap->retransmit(); } 9010447Snilay@cs.wisc.edu virtual const char *description() { return "retransmit event"; } 9110447Snilay@cs.wisc.edu }; 9210447Snilay@cs.wisc.edu 9310447Snilay@cs.wisc.edu friend class TxEvent; 9410447Snilay@cs.wisc.edu TxEvent txEvent; 9510447Snilay@cs.wisc.edu 9610447Snilay@cs.wisc.edu public: 9710447Snilay@cs.wisc.edu EtherTap(const std::string &name, EtherDump *dump, int port, int bufsz); 9810447Snilay@cs.wisc.edu virtual ~EtherTap(); 9910447Snilay@cs.wisc.edu 10010447Snilay@cs.wisc.edu virtual bool recvPacket(PacketPtr packet); 10110447Snilay@cs.wisc.edu virtual void sendDone(); 10210447Snilay@cs.wisc.edu 10310447Snilay@cs.wisc.edu virtual void serialize(std::ostream &os); 10410447Snilay@cs.wisc.edu virtual void unserialize(Checkpoint *cp, const std::string §ion); 10510447Snilay@cs.wisc.edu}; 10610447Snilay@cs.wisc.edu 10710447Snilay@cs.wisc.edu#endif // __ETHERTAP_HH__ 10810447Snilay@cs.wisc.edu