Merge "Revamp USB tethering startup flow." (90fddefd) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/connectivity/Tethering.java

+10 −64

Original line number	Diff line number	Diff line
		@@ -19,7 +19,6 @@ package com.android.server.connectivity;
		import static android.hardware.usb.UsbManager.USB_CONFIGURED;
		import static android.hardware.usb.UsbManager.USB_CONNECTED;
		import static android.hardware.usb.UsbManager.USB_FUNCTION_RNDIS;
		import static android.net.ConnectivityManager.getNetworkTypeName;
		import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_INTERFACE_NAME;
		import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_MODE;
		import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_STATE;
		@@ -43,7 +42,6 @@ import android.content.ComponentName;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.pm.PackageManager;
		import android.content.res.Resources;
		import android.hardware.usb.UsbManager;
		import android.net.ConnectivityManager;
		@@ -53,9 +51,7 @@ import android.net.IpPrefix;
		import android.net.LinkAddress;
		import android.net.LinkProperties;
		import android.net.Network;
		import android.net.NetworkCapabilities;
		import android.net.NetworkInfo;
		import android.net.NetworkRequest;
		import android.net.NetworkState;
		import android.net.NetworkUtils;
		import android.net.RouteInfo;
		@@ -76,7 +72,6 @@ import android.os.ResultReceiver;
		import android.os.UserHandle;
		import android.provider.Settings;
		import android.telephony.CarrierConfigManager;
		import android.telephony.TelephonyManager;
		import android.text.TextUtils;
		import android.util.ArrayMap;
		import android.util.Log;
		@@ -85,8 +80,6 @@ import android.util.SparseArray;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
		import com.android.internal.notification.SystemNotificationChannels;
		import com.android.internal.telephony.IccCardConstants;
		import com.android.internal.telephony.TelephonyIntents;
		import com.android.internal.util.DumpUtils;
		import com.android.internal.util.IndentingPrintWriter;
		import com.android.internal.util.MessageUtils;
		@@ -110,12 +103,8 @@ import java.net.InetAddress;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.Collection;
		import java.util.HashMap;
		import java.util.HashSet;
		import java.util.Iterator;
		import java.util.Map;
		import java.util.Set;
		import java.util.concurrent.atomic.AtomicInteger;


		/**
		@@ -193,8 +182,6 @@ public class Tethering extends BaseNetworkObserver {
		private int mLastNotificationId;

		private boolean mRndisEnabled; // track the RNDIS function enabled state
		private boolean mUsbTetherRequested; // true if USB tethering should be started
		// when RNDIS is enabled
		// True iff. WiFi tethering should be started when soft AP is ready.
		private boolean mWifiTetherRequested;

		@@ -867,33 +854,18 @@ public class Tethering extends BaseNetworkObserver {
		//
		// For more explanation, see b/62552150 .
		synchronized (Tethering.this.mPublicSync) {
		// Always record the state of RNDIS.
		// TODO: consider:
		// final boolean disconnected = !usbConnected;
		// if (disconnected) {
		// mRndisEnabled = false;
		// mUsbTetherRequested = false;
		// return;
		// }
		// final boolean configured = usbConnected && usbConfigured;
		// mRndisEnabled = configured ? rndisEnabled : false;
		// if (!configured) return;
		mRndisEnabled = rndisEnabled;

		if (usbConnected && !usbConfigured) {
		// Nothing to do here (only CONNECTED, not yet CONFIGURED).
		return;
		}

		// start tethering if we have a request pending
		if (usbConfigured && mRndisEnabled && mUsbTetherRequested) {
		if (!usbConnected && mRndisEnabled) {
		// Turn off tethering if it was enabled and there is a disconnect.
		tetherMatchingInterfaces(
		IControlsTethering.STATE_AVAILABLE,
		ConnectivityManager.TETHERING_USB);
		} else if (usbConfigured && rndisEnabled) {
		// Tether if rndis is enabled and usb is configured.
		tetherMatchingInterfaces(
		IControlsTethering.STATE_TETHERED,
		ConnectivityManager.TETHERING_USB);
		}

		// TODO: Figure out how to remove the need for this variable.
		mUsbTetherRequested = false;
		mRndisEnabled = usbConfigured && rndisEnabled;
		}
		}

		@@ -1065,34 +1037,8 @@ public class Tethering extends BaseNetworkObserver {
		public int setUsbTethering(boolean enable) {
		if (VDBG) Log.d(TAG, "setUsbTethering(" + enable + ")");
		UsbManager usbManager = (UsbManager) mContext.getSystemService(Context.USB_SERVICE);

		synchronized (mPublicSync) {
		if (enable) {
		if (mRndisEnabled) {
		final long ident = Binder.clearCallingIdentity();
		try {
		tetherMatchingInterfaces(IControlsTethering.STATE_TETHERED,
		ConnectivityManager.TETHERING_USB);
		} finally {
		Binder.restoreCallingIdentity(ident);
		}
		} else {
		mUsbTetherRequested = true;
		usbManager.setCurrentFunction(UsbManager.USB_FUNCTION_RNDIS, false);
		}
		} else {
		final long ident = Binder.clearCallingIdentity();
		try {
		tetherMatchingInterfaces(IControlsTethering.STATE_AVAILABLE,
		ConnectivityManager.TETHERING_USB);
		} finally {
		Binder.restoreCallingIdentity(ident);
		}
		if (mRndisEnabled) {
		usbManager.setCurrentFunction(null, false);
		}
		mUsbTetherRequested = false;
		}
		usbManager.setCurrentFunction(enable ? UsbManager.USB_FUNCTION_RNDIS : null, false);
		}
		return ConnectivityManager.TETHER_ERROR_NO_ERROR;
		}
		@@ -1149,7 +1095,7 @@ public class Tethering extends BaseNetworkObserver {
		if (!mForwardedDownstreams.isEmpty()) return true;

		synchronized (mPublicSync) {
		return mUsbTetherRequested \|\| mWifiTetherRequested;
		return mWifiTetherRequested;
		}
		}