Don't crash or wtf if the interface doesn't exist. am: 1725a2cd92 (3a9c1baf) · Commits · e / os / android_packages_modules_NetworkStack

src/android/net/ip/IpClient.java

+13 −11

Original line number	Diff line number	Diff line
		@@ -1699,25 +1699,27 @@ public class IpClient extends StateMachine {
		class ClearingIpAddressesState extends State {
		@Override
		public void enter() {
		if (readyToProceed()) {
		deferMessage(obtainMessage(CMD_ADDRESSES_CLEARED));
		} else {
		// Clear all IPv4 and IPv6 before proceeding to RunningState.
		// Clean up any leftover state from an abnormal exit from
		// tethering or during an IpClient restart.
		stopAllIP();
		}

		// Ensure that interface parameters are fetched on the handler thread so they are
		// properly ordered with other events, such as restoring the interface MTU on teardown.
		mInterfaceParams = mDependencies.getInterfaceParams(mInterfaceName);
		if (mInterfaceParams == null) {
		logError("Failed to find InterfaceParams for " + mInterfaceName);
		doImmediateProvisioningFailure(IpManagerEvent.ERROR_INTERFACE_NOT_FOUND);
		transitionTo(mStoppedState);
		deferMessage(obtainMessage(CMD_STOP));
		return;
		}

		mLinkObserver.setInterfaceParams(mInterfaceParams);

		if (readyToProceed()) {
		deferMessage(obtainMessage(CMD_ADDRESSES_CLEARED));
		} else {
		// Clear all IPv4 and IPv6 before proceeding to RunningState.
		// Clean up any leftover state from an abnormal exit from
		// tethering or during an IpClient restart.
		stopAllIP();
		}

		mCallback.setNeighborDiscoveryOffload(true);
		}

		@@ -1752,7 +1754,7 @@ public class IpClient extends StateMachine {
		}

		private boolean readyToProceed() {
		return (!mLinkProperties.hasIpv4Address() && !mLinkProperties.hasGlobalIpv6Address());
		return !mLinkProperties.hasIpv4Address() && !mLinkProperties.hasGlobalIpv6Address();
		}
		}