Only disable Wi-Fi IP serving on specific interface, if available (e0f7e496) · Commits · e / os / android_frameworks_base

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

+23 −12

Original line number	Diff line number	Diff line
		@@ -792,30 +792,41 @@ public class Tethering extends BaseNetworkObserver implements IControlsTethering
		case WifiManager.WIFI_AP_STATE_DISABLING:
		case WifiManager.WIFI_AP_STATE_FAILED:
		default:
		disableWifiIpServingLocked(curState);
		disableWifiIpServingLocked(ifname, curState);
		break;
		}
		}
		}
		}

		// TODO: Pass in the interface name and, if non-empty, only turn down IP
		// serving on that one interface.
		private void disableWifiIpServingLocked(int apState) {
		if (DBG) Log.d(TAG, "Canceling WiFi tethering request - AP_STATE=" + apState);
		private void disableWifiIpServingLocked(String ifname, int apState) {
		mLog.log("Canceling WiFi tethering request - AP_STATE=" + apState);

		// Regardless of whether we requested this transition, the AP has gone
		// down. Don't try to tether again unless we're requested to do so.
		// TODO: Remove this altogether, once Wi-Fi reliably gives us an
		// interface name with every broadcast.
		mWifiTetherRequested = false;

		if (!TextUtils.isEmpty(ifname)) {
		final TetherState ts = mTetherStates.get(ifname);
		if (ts != null) {
		ts.stateMachine.unwanted();
		return;
		}
		}

		// Tell appropriate interface state machines that they should tear
		// themselves down.
		for (int i = 0; i < mTetherStates.size(); i++) {
		TetherInterfaceStateMachine tism = mTetherStates.valueAt(i).stateMachine;
		if (tism.interfaceType() == ConnectivityManager.TETHERING_WIFI) {
		tism.sendMessage(TetherInterfaceStateMachine.CMD_TETHER_UNREQUESTED);
		break; // There should be at most one of these.
		tism.unwanted();
		return;
		}
		}
		// Regardless of whether we requested this transition, the AP has gone
		// down. Don't try to tether again unless we're requested to do so.
		mWifiTetherRequested = false;

		mLog.log("Error disabling Wi-Fi IP serving; " +
		(TextUtils.isEmpty(ifname) ? "no interface name specified"
		: "specified interface: " + ifname));
		}

		private void enableWifiIpServingLocked(String ifname, int wifiIpMode) {

services/core/java/com/android/server/connectivity/tethering/TetherInterfaceStateMachine.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -127,6 +127,10 @@ public class TetherInterfaceStateMachine extends StateMachine {

		public int lastError() { return mLastError; }

		public void stop() { sendMessage(CMD_INTERFACE_DOWN); }

		public void unwanted() { sendMessage(CMD_TETHER_UNREQUESTED); }

		// configured when we start tethering and unconfig'd on error or conclusion
		private boolean configureIfaceIp(boolean enabled) {
		if (VDBG) Log.d(TAG, "configureIfaceIp(" + enabled + ")");