956aff1291
Statistics::NodePtr, StaticInstPtr, ethernet PacketPtr.
base/statistics.hh:
Change NodePtr parameters to Nodeptr &.
cpu/exetrace.hh:
Change StaticInstPtr parameters to StaticInstPtr &.
dev/etherbus.cc:
dev/etherbus.hh:
dev/etherdump.cc:
dev/etherdump.hh:
dev/etherint.hh:
dev/etherlink.cc:
dev/etherlink.hh:
dev/ethertap.cc:
dev/ethertap.hh:
change PacketPtr parameters to PacketPtr &.
--HG--
extra : convert_revision : a778efdca33b0ec5beb76cf47db0e9e4728897ee
129 lines
3.9 KiB
C++
129 lines
3.9 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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#include <cmath>
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#include <deque>
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#include <string>
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#include <vector>
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#include "base/trace.hh"
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#include "dev/etherbus.hh"
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#include "dev/etherdump.hh"
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#include "dev/etherint.hh"
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#include "dev/etherpkt.hh"
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#include "sim/builder.hh"
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#include "sim/universe.hh"
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using namespace std;
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EtherBus::EtherBus(const string &name, double rate, bool loop,
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EtherDump *packet_dump)
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: SimObject(name), ticks_per_byte(rate), loopback(loop),
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event(&mainEventQueue, this),
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sender(0), dump(packet_dump)
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{ }
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void
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EtherBus::txDone()
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{
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devlist_t::iterator i = devlist.begin();
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devlist_t::iterator end = devlist.end();
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DPRINTF(Ethernet, "ethernet packet received: length=%d\n", packet->length);
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DDUMP(EthernetData, packet->data, packet->length);
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while (i != end) {
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if (loopback || *i != sender)
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(*i)->sendPacket(packet);
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++i;
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}
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sender->sendDone();
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if (dump)
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dump->dump(packet);
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sender = 0;
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packet = 0;
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}
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void
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EtherBus::reg(EtherInt *dev)
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{ devlist.push_back(dev); }
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bool
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EtherBus::send(EtherInt *sndr, PacketPtr &pkt)
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{
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if (busy()) {
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DPRINTF(Ethernet, "ethernet packet not sent, bus busy\n", curTick);
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return false;
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}
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DPRINTF(Ethernet, "ethernet packet sent: length=%d\n", pkt->length);
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DDUMP(EthernetData, pkt->data, pkt->length);
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packet = pkt;
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sender = sndr;
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int delay = (int)ceil(((double)pkt->length * ticks_per_byte) + 1.0);
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DPRINTF(Ethernet, "scheduling packet: delay=%d, (rate=%f)\n",
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delay, ticks_per_byte);
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event.schedule(curTick + delay);
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return true;
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}
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherBus)
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Param<bool> loopback;
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Param<int> speed;
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SimObjectParam<EtherDump *> packet_dump;
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END_DECLARE_SIM_OBJECT_PARAMS(EtherBus)
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BEGIN_INIT_SIM_OBJECT_PARAMS(EtherBus)
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INIT_PARAM_DFLT(loopback,
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"send the packet back to the interface from which it came",
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true),
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INIT_PARAM_DFLT(speed, "bus speed in bits per second", 100000000),
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INIT_PARAM_DFLT(packet_dump, "object to dump network packets to", NULL)
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END_INIT_SIM_OBJECT_PARAMS(EtherBus)
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CREATE_SIM_OBJECT(EtherBus)
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{
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double rate = ((double)ticksPerSecond * 8.0) / (double)speed;
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return new EtherBus(getInstanceName(), rate, loopback, packet_dump);
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}
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REGISTER_SIM_OBJECT("EtherBus", EtherBus)
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