From 23c961a0fd97251ee7c760bc2ff2a011a417ad9b Mon Sep 17 00:00:00 2001 From: Andreas Sandberg Date: Thu, 10 Dec 2015 10:35:18 +0000 Subject: dev: Move network devices to src/dev/net/ --HG-- rename : src/dev/Ethernet.py => src/dev/net/Ethernet.py rename : src/dev/etherbus.cc => src/dev/net/etherbus.cc rename : src/dev/etherbus.hh => src/dev/net/etherbus.hh rename : src/dev/etherdevice.cc => src/dev/net/etherdevice.cc rename : src/dev/etherdevice.hh => src/dev/net/etherdevice.hh rename : src/dev/etherdump.cc => src/dev/net/etherdump.cc rename : src/dev/etherdump.hh => src/dev/net/etherdump.hh rename : src/dev/etherint.cc => src/dev/net/etherint.cc rename : src/dev/etherint.hh => src/dev/net/etherint.hh rename : src/dev/etherlink.cc => src/dev/net/etherlink.cc rename : src/dev/etherlink.hh => src/dev/net/etherlink.hh rename : src/dev/etherobject.hh => src/dev/net/etherobject.hh rename : src/dev/etherpkt.cc => src/dev/net/etherpkt.cc rename : src/dev/etherpkt.hh => src/dev/net/etherpkt.hh rename : src/dev/ethertap.cc => src/dev/net/ethertap.cc rename : src/dev/ethertap.hh => src/dev/net/ethertap.hh rename : src/dev/i8254xGBe.cc => src/dev/net/i8254xGBe.cc rename : src/dev/i8254xGBe.hh => src/dev/net/i8254xGBe.hh rename : src/dev/i8254xGBe_defs.hh => src/dev/net/i8254xGBe_defs.hh rename : src/dev/multi_etherlink.cc => src/dev/net/multi_etherlink.cc rename : src/dev/multi_etherlink.hh => src/dev/net/multi_etherlink.hh rename : src/dev/multi_iface.cc => src/dev/net/multi_iface.cc rename : src/dev/multi_iface.hh => src/dev/net/multi_iface.hh rename : src/dev/multi_packet.cc => src/dev/net/multi_packet.cc rename : src/dev/multi_packet.hh => src/dev/net/multi_packet.hh rename : src/dev/ns_gige.cc => src/dev/net/ns_gige.cc rename : src/dev/ns_gige.hh => src/dev/net/ns_gige.hh rename : src/dev/ns_gige_reg.h => src/dev/net/ns_gige_reg.h rename : src/dev/pktfifo.cc => src/dev/net/pktfifo.cc rename : src/dev/pktfifo.hh => src/dev/net/pktfifo.hh rename : src/dev/sinic.cc => src/dev/net/sinic.cc rename : src/dev/sinic.hh => src/dev/net/sinic.hh rename : src/dev/sinicreg.hh => src/dev/net/sinicreg.hh rename : src/dev/tcp_iface.cc => src/dev/net/tcp_iface.cc rename : src/dev/tcp_iface.hh => src/dev/net/tcp_iface.hh --- src/dev/ethertap.cc | 346 ---------------------------------------------------- 1 file changed, 346 deletions(-) delete mode 100644 src/dev/ethertap.cc (limited to 'src/dev/ethertap.cc') diff --git a/src/dev/ethertap.cc b/src/dev/ethertap.cc deleted file mode 100644 index d062b5d8a..000000000 --- a/src/dev/ethertap.cc +++ /dev/null @@ -1,346 +0,0 @@ -/* - * Copyright (c) 2003-2005 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. - * - * Authors: Nathan Binkert - */ - -/* @file - * Interface to connect a simulated ethernet device to the real world - */ - -#if defined(__OpenBSD__) || defined(__APPLE__) -#include -#endif -#include -#include - -#include -#include - -#include "base/misc.hh" -#include "base/pollevent.hh" -#include "base/socket.hh" -#include "base/trace.hh" -#include "debug/Ethernet.hh" -#include "debug/EthernetData.hh" -#include "dev/etherdump.hh" -#include "dev/etherint.hh" -#include "dev/etherpkt.hh" -#include "dev/ethertap.hh" - -using namespace std; - -/** - */ -class TapListener -{ - protected: - /** - */ - class Event : public PollEvent - { - protected: - TapListener *listener; - - public: - Event(TapListener *l, int fd, int e) - : PollEvent(fd, e), listener(l) {} - - virtual void process(int revent) { listener->accept(); } - }; - - friend class Event; - Event *event; - - protected: - ListenSocket listener; - EtherTap *tap; - int port; - - public: - TapListener(EtherTap *t, int p) - : event(NULL), tap(t), port(p) {} - ~TapListener() { if (event) delete event; } - - void accept(); - void listen(); -}; - -void -TapListener::listen() -{ - while (!listener.listen(port, true)) { - DPRINTF(Ethernet, "TapListener(listen): Can't bind port %d\n", port); - port++; - } - - ccprintf(cerr, "Listening for tap connection on port %d\n", port); - event = new Event(this, listener.getfd(), POLLIN|POLLERR); - pollQueue.schedule(event); -} - -void -TapListener::accept() -{ - // As a consequence of being called from the PollQueue, we might - // have been called from a different thread. Migrate to "our" - // thread. - EventQueue::ScopedMigration migrate(tap->eventQueue()); - - if (!listener.islistening()) - panic("TapListener(accept): cannot accept if we're not listening!"); - - int sfd = listener.accept(true); - if (sfd != -1) - tap->attach(sfd); -} - -/** - */ -class TapEvent : public PollEvent -{ - protected: - EtherTap *tap; - - public: - TapEvent(EtherTap *_tap, int fd, int e) - : PollEvent(fd, e), tap(_tap) {} - virtual void process(int revent) { tap->process(revent); } -}; - -EtherTap::EtherTap(const Params *p) - : EtherObject(p), event(NULL), socket(-1), buflen(p->bufsz), dump(p->dump), - interface(NULL), txEvent(this) -{ - if (ListenSocket::allDisabled()) - fatal("All listeners are disabled! EtherTap can't work!"); - - buffer = new char[buflen]; - listener = new TapListener(this, p->port); - listener->listen(); - interface = new EtherTapInt(name() + ".interface", this); -} - -EtherTap::~EtherTap() -{ - if (event) - delete event; - if (buffer) - delete [] buffer; - - delete interface; - delete listener; -} - -void -EtherTap::attach(int fd) -{ - if (socket != -1) - close(fd); - - buffer_offset = 0; - data_len = 0; - socket = fd; - DPRINTF(Ethernet, "EtherTap attached\n"); - event = new TapEvent(this, socket, POLLIN|POLLERR); - pollQueue.schedule(event); -} - -void -EtherTap::detach() -{ - DPRINTF(Ethernet, "EtherTap detached\n"); - delete event; - event = 0; - close(socket); - socket = -1; -} - -bool -EtherTap::recvPacket(EthPacketPtr packet) -{ - if (dump) - dump->dump(packet); - - DPRINTF(Ethernet, "EtherTap output len=%d\n", packet->length); - DDUMP(EthernetData, packet->data, packet->length); - uint32_t len = htonl(packet->length); - ssize_t ret = write(socket, &len, sizeof(len)); - if (ret != sizeof(len)) - return false; - ret = write(socket, packet->data, packet->length); - if (ret != packet->length) - return false; - - interface->recvDone(); - - return true; -} - -void -EtherTap::sendDone() -{} - -void -EtherTap::process(int revent) -{ - if (revent & POLLERR) { - detach(); - return; - } - - char *data = buffer + sizeof(uint32_t); - if (!(revent & POLLIN)) - return; - - if (buffer_offset < data_len + sizeof(uint32_t)) { - int len = read(socket, buffer + buffer_offset, buflen - buffer_offset); - if (len == 0) { - detach(); - return; - } - - buffer_offset += len; - - if (data_len == 0) - data_len = ntohl(*(uint32_t *)buffer); - - DPRINTF(Ethernet, "Received data from peer: len=%d buffer_offset=%d " - "data_len=%d\n", len, buffer_offset, data_len); - } - - while (data_len != 0 && buffer_offset >= data_len + sizeof(uint32_t)) { - EthPacketPtr packet; - packet = make_shared(data_len); - packet->length = data_len; - memcpy(packet->data, data, data_len); - - buffer_offset -= data_len + sizeof(uint32_t); - assert(buffer_offset >= 0); - if (buffer_offset > 0) { - memmove(buffer, data + data_len, buffer_offset); - data_len = ntohl(*(uint32_t *)buffer); - } else - data_len = 0; - - DPRINTF(Ethernet, "EtherTap input len=%d\n", packet->length); - DDUMP(EthernetData, packet->data, packet->length); - if (!interface->sendPacket(packet)) { - DPRINTF(Ethernet, "bus busy...buffer for retransmission\n"); - packetBuffer.push(packet); - if (!txEvent.scheduled()) - schedule(txEvent, curTick() + retryTime); - } else if (dump) { - dump->dump(packet); - } - } -} - -void -EtherTap::retransmit() -{ - if (packetBuffer.empty()) - return; - - EthPacketPtr packet = packetBuffer.front(); - if (interface->sendPacket(packet)) { - if (dump) - dump->dump(packet); - DPRINTF(Ethernet, "EtherTap retransmit\n"); - packetBuffer.front() = NULL; - packetBuffer.pop(); - } - - if (!packetBuffer.empty() && !txEvent.scheduled()) - schedule(txEvent, curTick() + retryTime); -} - -EtherInt* -EtherTap::getEthPort(const std::string &if_name, int idx) -{ - if (if_name == "tap") { - if (interface->getPeer()) - panic("Interface already connected to\n"); - return interface; - } - return NULL; -} - - -//===================================================================== - -void -EtherTap::serialize(CheckpointOut &cp) const -{ - SERIALIZE_SCALAR(socket); - SERIALIZE_SCALAR(buflen); - uint8_t *buffer = (uint8_t *)this->buffer; - SERIALIZE_ARRAY(buffer, buflen); - SERIALIZE_SCALAR(buffer_offset); - SERIALIZE_SCALAR(data_len); - - bool tapevent_present = false; - if (event) { - tapevent_present = true; - SERIALIZE_SCALAR(tapevent_present); - event->serialize(cp); - } - else { - SERIALIZE_SCALAR(tapevent_present); - } -} - -void -EtherTap::unserialize(CheckpointIn &cp) -{ - UNSERIALIZE_SCALAR(socket); - UNSERIALIZE_SCALAR(buflen); - uint8_t *buffer = (uint8_t *)this->buffer; - UNSERIALIZE_ARRAY(buffer, buflen); - UNSERIALIZE_SCALAR(buffer_offset); - UNSERIALIZE_SCALAR(data_len); - - bool tapevent_present; - UNSERIALIZE_SCALAR(tapevent_present); - if (tapevent_present) { - event = new TapEvent(this, socket, POLLIN|POLLERR); - - event->unserialize(cp); - - if (event->queued()) { - pollQueue.schedule(event); - } - } -} - -//===================================================================== - -EtherTap * -EtherTapParams::create() -{ - return new EtherTap(this); -} -- cgit v1.2.3