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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.
- */
-
-/* @file
- * Device module for modelling an ethernet hub
- */
-
-#include <cmath>
-#include <deque>
-#include <string>
-#include <vector>
-
-#include "base/trace.hh"
-#include "dev/etherbus.hh"
-#include "dev/etherdump.hh"
-#include "dev/etherint.hh"
-#include "dev/etherpkt.hh"
-#include "sim/builder.hh"
-#include "sim/root.hh"
-
-using namespace std;
-
-EtherBus::EtherBus(const string &name, double speed, bool loop,
- EtherDump *packet_dump)
- : SimObject(name), ticksPerByte(speed), loopback(loop),
- event(&mainEventQueue, this), sender(0), dump(packet_dump)
-{
-}
-
-void
-EtherBus::txDone()
-{
- devlist_t::iterator i = devlist.begin();
- devlist_t::iterator end = devlist.end();
-
- DPRINTF(Ethernet, "ethernet packet received: length=%d\n", packet->length);
- DDUMP(EthernetData, packet->data, packet->length);
-
- while (i != end) {
- if (loopback || *i != sender)
- (*i)->sendPacket(packet);
- ++i;
- }
-
- sender->sendDone();
-
- if (dump)
- dump->dump(packet);
-
- sender = 0;
- packet = 0;
-}
-
-void
-EtherBus::reg(EtherInt *dev)
-{ devlist.push_back(dev); }
-
-bool
-EtherBus::send(EtherInt *sndr, PacketPtr &pkt)
-{
- if (busy()) {
- DPRINTF(Ethernet, "ethernet packet not sent, bus busy\n", curTick);
- return false;
- }
-
- DPRINTF(Ethernet, "ethernet packet sent: length=%d\n", pkt->length);
- DDUMP(EthernetData, pkt->data, pkt->length);
-
- packet = pkt;
- sender = sndr;
- int delay = (int)ceil(((double)pkt->length * ticksPerByte) + 1.0);
- DPRINTF(Ethernet, "scheduling packet: delay=%d, (rate=%f)\n",
- delay, ticksPerByte);
- event.schedule(curTick + delay);
-
- return true;
-}
-
-BEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherBus)
-
- Param<bool> loopback;
- Param<double> speed;
- SimObjectParam<EtherDump *> packet_dump;
-
-END_DECLARE_SIM_OBJECT_PARAMS(EtherBus)
-
-BEGIN_INIT_SIM_OBJECT_PARAMS(EtherBus)
-
- INIT_PARAM(loopback, "send the packet back to the sending interface"),
- INIT_PARAM(speed, "bus speed in ticks per byte"),
- INIT_PARAM(packet_dump, "object to dump network packets to")
-
-END_INIT_SIM_OBJECT_PARAMS(EtherBus)
-
-CREATE_SIM_OBJECT(EtherBus)
-{
- return new EtherBus(getInstanceName(), speed, loopback, packet_dump);
-}
-
-REGISTER_SIM_OBJECT("EtherBus", EtherBus)