/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.net.ethernet.spi;
import org.apache.log4j.Logger;
import org.jnode.driver.Device;
import org.jnode.driver.DriverException;
import org.jnode.driver.net.NetworkException;
import org.jnode.driver.net.spi.AbstractDeviceCore;
import org.jnode.net.HardwareAddress;
import org.jnode.net.SocketBuffer;
import org.jnode.system.resource.ResourceNotFreeException;
import org.jnode.util.TimeoutException;
/**
* @author Martin Husted Hartvig
*/
public abstract class BasicEthernetDriver extends AbstractEthernetDriver {
private static final long TRANSMIT_TIMEOUT = 5000;
/**
* My logger
*/
protected static final Logger log = Logger.getLogger(BasicEthernetDriver.class);
/**
* The device flags
*/
protected Flags flags;
/**
* The actual device driver
*/
private AbstractDeviceCore abstractDeviceCore;
/**
* @see org.jnode.driver.net.spi.AbstractNetDriver#doTransmit(SocketBuffer, HardwareAddress)
*/
protected void doTransmitEthernet(SocketBuffer skbuf, HardwareAddress destination) throws NetworkException {
try {
// Pad
if (skbuf.getSize() < ETH_ZLEN) {
skbuf.append(ETH_ZLEN - skbuf.getSize());
}
abstractDeviceCore.transmit(skbuf, destination, TRANSMIT_TIMEOUT);
} catch (InterruptedException ex) {
throw new NetworkException("Interrupted", ex);
} catch (TimeoutException ex) {
throw new NetworkException("Timeout", ex);
}
}
/**
* Gets the hardware address of this device
*/
public HardwareAddress getAddress() {
return abstractDeviceCore.getHwAddress();
}
/**
* @see org.jnode.driver.Driver#startDevice()
*/
protected void startDevice() throws DriverException {
try {
log.info("Starting " + flags.getName());
abstractDeviceCore = newCore(getDevice(), flags);
try {
abstractDeviceCore.initialize();
} catch (DriverException ex) {
abstractDeviceCore.release();
throw ex;
}
super.startDevice();
} catch (ResourceNotFreeException ex) {
throw new DriverException("Cannot claim " + flags.getName() + " resources", ex);
}
}
/**
* @see org.jnode.driver.Driver#stopDevice()
*/
protected void stopDevice() throws DriverException {
super.stopDevice();
abstractDeviceCore.disable();
abstractDeviceCore.release();
abstractDeviceCore = null;
}
/**
* Create a new RTL8139Core instance
*/
protected abstract AbstractDeviceCore newCore(Device device, Flags flags)
throws DriverException, ResourceNotFreeException;
/**
* Get the flags for this device
*
* @return The flags
*/
public Flags getFlags() {
return flags;
}
/**
* @return Returns the device core.
*/
protected final AbstractDeviceCore getDeviceCore() {
return abstractDeviceCore;
}
}