Merge "Add support for USB Ethernet adapters" (32a4935b) · Commits · e / os / android_frameworks_base

core/java/android/net/EthernetDataTracker.java

0 → 100644

+333 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.net;

		import android.content.Context;
		import android.net.ConnectivityManager;
		import android.net.DhcpInfoInternal;
		import android.net.LinkAddress;
		import android.net.LinkCapabilities;
		import android.net.LinkProperties;
		import android.net.NetworkInfo;
		import android.net.NetworkInfo.DetailedState;
		import android.net.NetworkStateTracker;
		import android.net.NetworkUtils;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.INetworkManagementService;
		import android.os.Message;
		import android.os.RemoteException;
		import android.os.ServiceManager;
		import android.util.Log;

		import java.net.InetAddress;
		import java.util.concurrent.atomic.AtomicBoolean;
		import java.util.concurrent.atomic.AtomicInteger;

		/**
		* This class tracks the data connection associated with Ethernet
		* This is a singleton class and an instance will be created by
		* ConnectivityService.
		* @hide
		*/
		public class EthernetDataTracker implements NetworkStateTracker {
		private static final String NETWORKTYPE = "ETHERNET";
		private static final String TAG = "Ethernet";

		private AtomicBoolean mTeardownRequested = new AtomicBoolean(false);
		private AtomicBoolean mPrivateDnsRouteSet = new AtomicBoolean(false);
		private AtomicInteger mDefaultGatewayAddr = new AtomicInteger(0);
		private AtomicBoolean mDefaultRouteSet = new AtomicBoolean(false);

		private LinkProperties mLinkProperties;
		private LinkCapabilities mLinkCapabilities;
		private NetworkInfo mNetworkInfo;
		private InterfaceObserver mInterfaceObserver;

		/* For sending events to connectivity service handler */
		private Handler mCsHandler;
		private Context mContext;

		private static EthernetDataTracker sInstance;
		private static String mIface = "";

		private static class InterfaceObserver extends INetworkManagementEventObserver.Stub {
		private EthernetDataTracker mTracker;

		InterfaceObserver(EthernetDataTracker tracker) {
		super();
		mTracker = tracker;
		}

		public void interfaceLinkStatusChanged(String iface, boolean up) {
		Log.d(TAG, "Interface " + iface + " link " + (up ? "up" : "down"));
		}

		public void interfaceAdded(String iface) {
		mTracker.interfaceAdded(iface);
		}

		public void interfaceRemoved(String iface) {
		mTracker.interfaceRemoved(iface);
		}
		}

		private EthernetDataTracker() {
		mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_ETHERNET, 0, NETWORKTYPE, "");
		mLinkProperties = new LinkProperties();
		mLinkCapabilities = new LinkCapabilities();

		mNetworkInfo.setIsAvailable(false);
		setTeardownRequested(false);
		}

		private void interfaceAdded(String iface) {
		if (!iface.matches("eth\\d"))
		return;

		Log.d(TAG, "Adding " + iface);

		synchronized(mIface) {
		if(!mIface.isEmpty())
		return;
		mIface = iface;
		}

		mNetworkInfo.setIsAvailable(true);
		Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo);
		msg.sendToTarget();

		runDhcp();
		}

		private void interfaceRemoved(String iface) {
		if (!iface.equals(mIface))
		return;

		Log.d(TAG, "Removing " + iface);

		NetworkUtils.stopDhcp(mIface);

		mLinkProperties.clear();
		mNetworkInfo.setIsAvailable(false);
		mNetworkInfo.setDetailedState(DetailedState.DISCONNECTED, null, null);

		Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo);
		msg.sendToTarget();

		msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
		msg.sendToTarget();

		mIface = "";
		}

		private void runDhcp() {
		Thread dhcpThread = new Thread(new Runnable() {
		public void run() {
		DhcpInfoInternal dhcpInfoInternal = new DhcpInfoInternal();
		if (!NetworkUtils.runDhcp(mIface, dhcpInfoInternal)) {
		Log.e(TAG, "DHCP request error:" + NetworkUtils.getDhcpError());
		return;
		}
		mLinkProperties = dhcpInfoInternal.makeLinkProperties();
		mLinkProperties.setInterfaceName(mIface);

		mNetworkInfo.setDetailedState(DetailedState.CONNECTED, null, null);
		Message msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
		msg.sendToTarget();
		}
		});
		dhcpThread.start();
		}

		public static synchronized EthernetDataTracker getInstance() {
		if (sInstance == null) sInstance = new EthernetDataTracker();
		return sInstance;
		}

		public Object Clone() throws CloneNotSupportedException {
		throw new CloneNotSupportedException();
		}

		public void setTeardownRequested(boolean isRequested) {
		mTeardownRequested.set(isRequested);
		}

		public boolean isTeardownRequested() {
		return mTeardownRequested.get();
		}

		/**
		* Begin monitoring connectivity
		*/
		public void startMonitoring(Context context, Handler target) {
		mContext = context;
		mCsHandler = target;

		// register for notifications from NetworkManagement Service
		IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
		INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
		mInterfaceObserver = new InterfaceObserver(this);
		try {
		service.registerObserver(mInterfaceObserver);
		} catch (RemoteException e) {
		Log.e(TAG, "Could not register InterfaceObserver " + e);
		}
		}

		/**
		* Disable connectivity to a network
		* TODO: do away with return value after making MobileDataStateTracker async
		*/
		public boolean teardown() {
		mTeardownRequested.set(true);
		NetworkUtils.stopDhcp(mIface);
		return true;
		}

		/**
		* Re-enable connectivity to a network after a {@link #teardown()}.
		*/
		public boolean reconnect() {
		mTeardownRequested.set(false);
		runDhcp();
		return true;
		}

		/**
		* Turn the wireless radio off for a network.
		* @param turnOn {@code true} to turn the radio on, {@code false}
		*/
		public boolean setRadio(boolean turnOn) {
		return true;
		}

		/**
		* @return true - If are we currently tethered with another device.
		*/
		public synchronized boolean isAvailable() {
		return mNetworkInfo.isAvailable();
		}

		/**
		* Tells the underlying networking system that the caller wants to
		* begin using the named feature. The interpretation of {@code feature}
		* is completely up to each networking implementation.
		* @param feature the name of the feature to be used
		* @param callingPid the process ID of the process that is issuing this request
		* @param callingUid the user ID of the process that is issuing this request
		* @return an integer value representing the outcome of the request.
		* The interpretation of this value is specific to each networking
		* implementation+feature combination, except that the value {@code -1}
		* always indicates failure.
		* TODO: needs to go away
		*/
		public int startUsingNetworkFeature(String feature, int callingPid, int callingUid) {
		return -1;
		}

		/**
		* Tells the underlying networking system that the caller is finished
		* using the named feature. The interpretation of {@code feature}
		* is completely up to each networking implementation.
		* @param feature the name of the feature that is no longer needed.
		* @param callingPid the process ID of the process that is issuing this request
		* @param callingUid the user ID of the process that is issuing this request
		* @return an integer value representing the outcome of the request.
		* The interpretation of this value is specific to each networking
		* implementation+feature combination, except that the value {@code -1}
		* always indicates failure.
		* TODO: needs to go away
		*/
		public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) {
		return -1;
		}

		/**
		* @param enabled
		*/
		public void setDataEnable(boolean enabled) {
		Log.d(TAG, "setDataEnabled: IGNORING enabled=" + enabled);
		}

		/**
		* Check if private DNS route is set for the network
		*/
		public boolean isPrivateDnsRouteSet() {
		return mPrivateDnsRouteSet.get();
		}

		/**
		* Set a flag indicating private DNS route is set
		*/
		public void privateDnsRouteSet(boolean enabled) {
		mPrivateDnsRouteSet.set(enabled);
		}

		/**
		* Fetch NetworkInfo for the network
		*/
		public synchronized NetworkInfo getNetworkInfo() {
		return mNetworkInfo;
		}

		/**
		* Fetch LinkProperties for the network
		*/
		public synchronized LinkProperties getLinkProperties() {
		return new LinkProperties(mLinkProperties);
		}

		/**
		* A capability is an Integer/String pair, the capabilities
		* are defined in the class LinkSocket#Key.
		*
		* @return a copy of this connections capabilities, may be empty but never null.
		*/
		public LinkCapabilities getLinkCapabilities() {
		return new LinkCapabilities(mLinkCapabilities);
		}

		/**
		* Fetch default gateway address for the network
		*/
		public int getDefaultGatewayAddr() {
		return mDefaultGatewayAddr.get();
		}

		/**
		* Check if default route is set
		*/
		public boolean isDefaultRouteSet() {
		return mDefaultRouteSet.get();
		}

		/**
		* Set a flag indicating default route is set for the network
		*/
		public void defaultRouteSet(boolean enabled) {
		mDefaultRouteSet.set(enabled);
		}

		/**
		* Return the system properties name associated with the tcp buffer sizes
		* for this network.
		*/
		public String getTcpBufferSizesPropName() {
		return "net.tcp.buffersize.wifi";
		}
		}

services/java/com/android/server/ConnectivityService.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@ import android.content.pm.PackageManager;
		import android.database.ContentObserver;
		import android.net.ConnectivityManager;
		import android.net.DummyDataStateTracker;
		import android.net.EthernetDataTracker;
		import android.net.IConnectivityManager;
		import android.net.LinkProperties;
		import android.net.MobileDataStateTracker;
		@@ -420,6 +421,10 @@ public class ConnectivityService extends IConnectivityManager.Stub {
		mNetTrackers[netType] = BluetoothTetheringDataTracker.getInstance();
		mNetTrackers[netType].startMonitoring(context, mHandler);
		break;
		case ConnectivityManager.TYPE_ETHERNET:
		mNetTrackers[netType] = EthernetDataTracker.getInstance();
		mNetTrackers[netType].startMonitoring(context, mHandler);
		break;
		default:
		loge("Trying to create a DataStateTracker for an unknown radio type " +
		mNetAttributes[netType].mRadio);