etherlink.cc revision 195
16167SN/A/* 26167SN/A * Copyright (c) 2003 The Regents of The University of Michigan 36167SN/A * All rights reserved. 410036SAli.Saidi@ARM.com * 58835SAli.Saidi@ARM.com * Redistribution and use in source and binary forms, with or without 610036SAli.Saidi@ARM.com * modification, are permitted provided that the following conditions are 77935SN/A * met: redistributions of source code must retain the above copyright 87935SN/A * notice, this list of conditions and the following disclaimer; 97935SN/A * redistributions in binary form must reproduce the above copyright 106167SN/A * notice, this list of conditions and the following disclaimer in the 116167SN/A * documentation and/or other materials provided with the distribution; 126167SN/A * neither the name of the copyright holders nor the names of its 1310315Snilay@cs.wisc.edu * contributors may be used to endorse or promote products derived from 148835SAli.Saidi@ARM.com * this software without specific prior written permission. 159864Snilay@cs.wisc.edu * 169864Snilay@cs.wisc.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1710036SAli.Saidi@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 188835SAli.Saidi@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 198835SAli.Saidi@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2010315Snilay@cs.wisc.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 218835SAli.Saidi@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2210063Snilay@cs.wisc.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237935SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 249864Snilay@cs.wisc.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 258721SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 268721SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 278835SAli.Saidi@ARM.com */ 288835SAli.Saidi@ARM.com 297935SN/A/* @file 307935SN/A * Device module for modelling a fixed bandwidth full duplex ethernet link 317935SN/A */ 327935SN/A 337935SN/A#include <cmath> 347935SN/A#include <deque> 357935SN/A#include <string> 368983Snate@binkert.org#include <vector> 376167SN/A 389864Snilay@cs.wisc.edu#include "base/trace.hh" 399864Snilay@cs.wisc.edu#include "dev/etherdump.hh" 409864Snilay@cs.wisc.edu#include "dev/etherint.hh" 4110315Snilay@cs.wisc.edu#include "dev/etherlink.hh" 4210036SAli.Saidi@ARM.com#include "dev/etherpkt.hh" 4310315Snilay@cs.wisc.edu#include "sim/builder.hh" 449864Snilay@cs.wisc.edu#include "sim/universe.hh" 459864Snilay@cs.wisc.edu 466167SN/Ausing namespace std; 476167SN/A 489864Snilay@cs.wisc.eduEtherLink::EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2, 4910063Snilay@cs.wisc.edu Tick speed, EtherDump *dump) 506167SN/A : SimObject(name) 519864Snilay@cs.wisc.edu{ 526167SN/A double rate = ((double)ticksPerSecond * 8.0) / (double)speed; 536167SN/A 548835SAli.Saidi@ARM.com link1 = new Link(name + ".link1", rate, dump); 556167SN/A link2 = new Link(name + ".link2", rate, dump); 566167SN/A 5710036SAli.Saidi@ARM.com int1 = new Interface(name + ".int1", link1, link2); 586167SN/A int2 = new Interface(name + ".int2", link2, link1); 596167SN/A 608835SAli.Saidi@ARM.com int1->setPeer(i1); 619469Snilay@cs.wisc.edu i1->setPeer(int1); 626167SN/A int2->setPeer(i2); 636167SN/A i2->setPeer(int2); 646167SN/A} 656167SN/A 666167SN/AEtherLink::~EtherLink() 676167SN/A{ 688835SAli.Saidi@ARM.com delete link1; 696167SN/A delete link2; 709864Snilay@cs.wisc.edu 7110229Snilay@cs.wisc.edu delete int1; 729469Snilay@cs.wisc.edu delete int2; 736167SN/A} 746167SN/A 756167SN/AEtherLink::Interface::Interface(const std::string &name, Link *tx, Link *rx) 769469Snilay@cs.wisc.edu : EtherInt(name), txlink(tx) 779469Snilay@cs.wisc.edu{ 786167SN/A tx->setTxInt(this); 799864Snilay@cs.wisc.edu rx->setRxInt(this); 809864Snilay@cs.wisc.edu} 819864Snilay@cs.wisc.edu 8210315Snilay@cs.wisc.eduEtherLink::Link::Link(const std::string &name, double rate, EtherDump *d) 8310036SAli.Saidi@ARM.com : Serializeable(name), txint(NULL), rxint(NULL), ticks_per_byte(rate), 8410315Snilay@cs.wisc.edu dump(d), event(&mainEventQueue, this) 859864Snilay@cs.wisc.edu{} 869864Snilay@cs.wisc.edu 876167SN/Avoid 886167SN/AEtherLink::Link::txDone() 8910036SAli.Saidi@ARM.com{ 906167SN/A if (dump) 916167SN/A dump->dump(packet); 928835SAli.Saidi@ARM.com 938835SAli.Saidi@ARM.com DPRINTF(Ethernet, "EtherLink packet received: len=%d\n", packet->length); 9410036SAli.Saidi@ARM.com DDUMP(EthernetData, packet->data, packet->length); 958835SAli.Saidi@ARM.com 969469Snilay@cs.wisc.edu rxint->sendPacket(packet); 979469Snilay@cs.wisc.edu 9810036SAli.Saidi@ARM.com packet = 0; 999469Snilay@cs.wisc.edu assert(!busy()); 1006167SN/A 1016167SN/A txint->sendDone(); 10210036SAli.Saidi@ARM.com} 1036167SN/A 1046167SN/Abool 1056167SN/AEtherLink::Link::transmit(PacketPtr pkt) 1066167SN/A{ 10710036SAli.Saidi@ARM.com if (busy()) { 1086167SN/A DPRINTF(Ethernet, "EtherLink packet not sent, link busy\n"); 1096167SN/A return false; 1106167SN/A } 1116167SN/A 1126167SN/A DPRINTF(Ethernet, "EtherLink packet sent: len=%d\n", pkt->length); 1136167SN/A DDUMP(EthernetData, pkt->data, pkt->length); 1146167SN/A 1156167SN/A packet = pkt; 1166167SN/A int delay = (int)ceil(((double)pkt->length * ticks_per_byte) + 1.0); 11710036SAli.Saidi@ARM.com DPRINTF(Ethernet, "EtherLink scheduling packet: delay=%d, (rate=%f)\n", 11810229Snilay@cs.wisc.edu delay, ticks_per_byte); 1196167SN/A event.schedule(curTick + delay); 1206167SN/A 1216167SN/A return true; 1226167SN/A} 1236167SN/A 1246167SN/ABEGIN_DECLARE_SIM_OBJECT_PARAMS(EtherLink) 1256167SN/A 1266167SN/A SimObjectParam<EtherInt *> interface1; 1276167SN/A SimObjectParam<EtherInt *> interface2; 12810451Snilay@cs.wisc.edu Param<int> link_speed; 1296167SN/A SimObjectParam<EtherDump *> packet_dump; 13010315Snilay@cs.wisc.edu 13110315Snilay@cs.wisc.eduEND_DECLARE_SIM_OBJECT_PARAMS(EtherLink) 13210315Snilay@cs.wisc.edu 13310315Snilay@cs.wisc.eduBEGIN_INIT_SIM_OBJECT_PARAMS(EtherLink) 13410315Snilay@cs.wisc.edu 13510315Snilay@cs.wisc.edu INIT_PARAM(interface1, "interface 1"), 13610315Snilay@cs.wisc.edu INIT_PARAM(interface2, "interface 2"), 13710315Snilay@cs.wisc.edu INIT_PARAM_DFLT(link_speed, "link speed in bits per second", 100000000), 1389469Snilay@cs.wisc.edu INIT_PARAM_DFLT(packet_dump, "object to dump network packets to", NULL) 1399469Snilay@cs.wisc.edu 1409469Snilay@cs.wisc.eduEND_INIT_SIM_OBJECT_PARAMS(EtherLink) 1419864Snilay@cs.wisc.edu 1429864Snilay@cs.wisc.eduCREATE_SIM_OBJECT(EtherLink) 14310036SAli.Saidi@ARM.com{ 1449469Snilay@cs.wisc.edu return new EtherLink(getInstanceName(), interface1, interface2, link_speed, 1459469Snilay@cs.wisc.edu packet_dump); 1469469Snilay@cs.wisc.edu} 1479578Snilay@cs.wisc.edu 1489469Snilay@cs.wisc.eduREGISTER_SIM_OBJECT("EtherLink", EtherLink) 1499469Snilay@cs.wisc.edu