80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* @file
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* Device module for modelling an ethernet hub
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*/
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#ifndef __ETHERBUS_H__
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#define __ETHERBUS_H__
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#include "eventq.hh"
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#include "etherpkt.hh"
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#include "sim_object.hh"
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class EtherDump;
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class EtherInt;
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class EtherBus : public SimObject
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{
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protected:
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typedef std::list<EtherInt *> devlist_t;
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devlist_t devlist;
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double ticks_per_byte;
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bool loopback;
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protected:
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class DoneEvent : public Event
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{
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protected:
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EtherBus *bus;
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public:
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DoneEvent(EventQueue *q, EtherBus *b)
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: Event(q), bus(b) {}
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virtual void process() { bus->txDone(); }
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virtual const char *description() { return "ethernet bus completion"; }
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};
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DoneEvent event;
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PacketPtr packet;
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EtherInt *sender;
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EtherDump *dump;
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public:
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EtherBus(const std::string &name, double ticks_per_byte, bool loopback,
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EtherDump *dump);
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virtual ~EtherBus() {}
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void txDone();
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void reg(EtherInt *dev);
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bool busy() const { return (bool)packet; }
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bool send(EtherInt *sender, PacketPtr packet);
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};
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#endif // __ETHERBUS_H__
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