Merge "Handle source PDN lost during HO" (28c071a8) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/data/DataNetwork.java

+26 −0

Original line number	Diff line number	Diff line
		@@ -1417,6 +1417,13 @@ public class DataNetwork extends StateMachine {
		+ AccessNetworkConstants.transportTypeToString(transport)
		+ " data call list changed event. " + responseList);
		} else {
		// If source PDN is reported lost, notify network agent that the PDN is
		// temporarily suspended and the old interface name is no longer usable.
		boolean currentPdnIsAlive = responseList.stream()
		.anyMatch(r -> mCid.get(mTransport) == r.getId());
		if (!currentPdnIsAlive) {
		notifyNetworkUnusable();
		}
		log("Defer message " + eventToString(msg.what) + ":" + responseList);
		deferMessage(msg);
		}
		@@ -1464,6 +1471,25 @@ public class DataNetwork extends StateMachine {
		}
		return HANDLED;
		}

		/**
		* Notify network agent that the PDN is temporarily suspended and the old interface name is
		* no longer usable. The state will be re-evaluated when the handover ends.
		*/
		private void notifyNetworkUnusable() {
		log(AccessNetworkConstants.transportTypeToString(mTransport)
		+ " reports current PDN lost, update capability to SUSPENDED,"
		+ " TNA interfaceName to \"\"");
		mNetworkCapabilities = new NetworkCapabilities
		.Builder(mNetworkCapabilities)
		.removeCapability(
		NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)
		.build();
		mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities);

		mLinkProperties.setInterfaceName("");
		mNetworkAgent.sendLinkProperties(mLinkProperties);
		}
		}

		/**

+19 −1

Original line number	Diff line number	Diff line
		@@ -989,12 +989,30 @@ public class DataNetworkTest extends TelephonyTest {
		public void testHandover() throws Exception {
		setupDataNetwork();

		setSuccessfulSetupDataResponse(mMockedWlanDataServiceManager, 456);
		// Now handover to IWLAN
		mDataNetworkUT.startHandover(AccessNetworkConstants.TRANSPORT_TYPE_WLAN, null);
		// the source transport might report PDN lost
		mDataNetworkUT.sendMessage(8/EVENT_DATA_STATE_CHANGED/,
		new AsyncResult(AccessNetworkConstants.TRANSPORT_TYPE_WWAN,
		Collections.emptyList(), null));
		processAllMessages();

		// make sure interface name of source PDN is cleared
		assertThat(mDataNetworkUT.getLinkProperties().getInterfaceName()).isNotEqualTo("ifname");
		// make sure the capability of source PDN is set to SUSPENDED
		assertThat(mDataNetworkUT.getNetworkCapabilities()
		.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)).isFalse();
		verify(mMockedWwanDataServiceManager).startHandover(eq(123), any(Message.class));

		// continue the HO
		setSuccessfulSetupDataResponse(mMockedWlanDataServiceManager, 456);
		Message msg = new Message();
		msg.what = 26/EVENT_NOTIFY_HANDOVER_STARTED_RESPONSE/;
		msg.arg2 = AccessNetworkConstants.TRANSPORT_TYPE_WLAN;
		msg.obj = null;
		mDataNetworkUT.sendMessage(msg);
		processAllMessages();

		verify(mLinkBandwidthEstimator).unregisterCallback(any(
		LinkBandwidthEstimatorCallback.class));
		assertThat(mDataNetworkUT.getTransport())