Transmitting multiple default networks to netd (079d5f94) · Commits · e / os / android_frameworks_base

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

+125 −29

Original line number	Diff line number	Diff line
		@@ -1227,6 +1227,14 @@ public class ConnectivityService extends IConnectivityManager.Stub

		mDnsManager = new DnsManager(mContext, mDnsResolver);
		registerPrivateDnsSettingsCallbacks();

		mNoServiceNetwork = new NetworkAgentInfo(null,
		new Network(NO_SERVICE_NET_ID),
		new NetworkInfo(TYPE_NONE, 0, "", ""),
		new LinkProperties(), new NetworkCapabilities(), 0, mContext,
		null, new NetworkAgentConfig(), this, null,
		null, null, 0, INVALID_UID,
		mQosCallbackTracker);
		}

		private static NetworkCapabilities createDefaultNetworkCapabilitiesForUid(int uid) {
		@@ -3446,13 +3454,16 @@ public class ConnectivityService extends IConnectivityManager.Stub
		propagateUnderlyingNetworkCapabilities(nai.network);
		// Remove all previously satisfied requests.
		for (int i = 0; i < nai.numNetworkRequests(); i++) {
		NetworkRequest request = nai.requestAt(i);
		final NetworkRequest request = nai.requestAt(i);
		final NetworkRequestInfo nri = mNetworkRequests.get(request);
		final NetworkAgentInfo currentNetwork = nri.getSatisfier();
		if (currentNetwork != null
		&& currentNetwork.network.getNetId() == nai.network.getNetId()) {
		// uid rules for this network will be removed in destroyNativeNetwork(nai).
		nri.setSatisfier(null, null);
		if (request.isRequest()) {
		sendUpdatedScoreToFactories(request, null);
		}

		if (mDefaultRequest == nri) {
		// TODO : make battery stats aware that since 2013 multiple interfaces may be
		@@ -3709,7 +3720,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		if (mNetworkRequests.get(nri.mRequests.get(0)) == null) {
		return;
		}
		if (nri.getSatisfier() != null) {
		if (nri.getActiveRequest() != null) {
		return;
		}
		if (VDBG \|\| (DBG && nri.mRequests.get(0).isRequest())) {
		@@ -4951,6 +4962,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		}
		}

		// TODO This needs to be the default network that applies to the NAI.
		private Network[] underlyingNetworksOrDefault(Network[] underlyingNetworks) {
		final Network defaultNetwork = getNetwork(getDefaultNetwork());
		if (underlyingNetworks == null && defaultNetwork != null) {
		@@ -5521,9 +5533,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
		mActiveRequest = activeRequest;
		}

		// The network currently satisfying this request, or null if none. Must only be touched
		// on the handler thread. This only makes sense for network requests and not for listens,
		// as defined by NetworkRequest#isRequest(). For listens, this is always null.
		// The network currently satisfying this NRI. Only one request in an NRI can have a
		// satisfier. For non-multilayer requests, only REQUEST-type requests can have a satisfier.
		@Nullable
		private NetworkAgentInfo mSatisfier;
		NetworkAgentInfo getSatisfier() {
		@@ -5546,6 +5557,18 @@ public class ConnectivityService extends IConnectivityManager.Stub
		final int mUid;
		final Messenger messenger;

		/**
		* Get the list of UIDs this nri applies to.
		*/
		@NonNull
		private Set<UidRange> getUids() {
		// networkCapabilities.getUids() returns a defensive copy.
		// multilayer requests will all have the same uids so return the first one.
		final Set<UidRange> uids = null == mRequests.get(0).networkCapabilities.getUids()
		? new ArraySet<>() : mRequests.get(0).networkCapabilities.getUids();
		return uids;
		}

		NetworkRequestInfo(NetworkRequest r, PendingIntent pi) {
		mRequests = initializeRequests(r);
		ensureAllNetworkRequestsHaveType(mRequests);
		@@ -5604,7 +5627,9 @@ public class ConnectivityService extends IConnectivityManager.Stub

		@Override
		public String toString() {
		return "uid/pid:" + mUid + "/" + mPid + " " + mRequests
		return "uid/pid:" + mUid + "/" + mPid + " active request Id: "
		+ (mActiveRequest == null ? null : mActiveRequest.requestId)
		+ " " + mRequests
		+ (mPendingIntent == null ? "" : " to trigger " + mPendingIntent);
		}
		}
		@@ -6064,6 +6089,26 @@ public class ConnectivityService extends IConnectivityManager.Stub
		@NonNull
		private final ArraySet<NetworkRequestInfo> mDefaultNetworkRequests = new ArraySet<>();

		private boolean isPerAppDefaultRequest(@NonNull final NetworkRequestInfo nri) {
		return (mDefaultNetworkRequests.contains(nri) && mDefaultRequest != nri);
		}

		/**
		* Determine if an nri is a managed default request that disallows default networking.
		* @param nri the request to evaluate
		* @return true if device-default networking is disallowed
		*/
		private boolean isDefaultBlocked(@NonNull final NetworkRequestInfo nri) {
		// Check if this nri is a managed default that supports the default network at its
		// lowest priority request.
		final NetworkRequest defaultNetworkRequest = mDefaultRequest.mRequests.get(0);
		final NetworkCapabilities lowestPriorityNetCap =
		nri.mRequests.get(nri.mRequests.size() - 1).networkCapabilities;
		return isPerAppDefaultRequest(nri)
		&& !(defaultNetworkRequest.networkCapabilities.equalRequestableCapabilities(
		lowestPriorityNetCap));
		}

		// Request used to optionally keep mobile data active even when higher
		// priority networks like Wi-Fi are active.
		private final NetworkRequest mDefaultMobileDataRequest;
		@@ -6075,6 +6120,17 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// Request used to optionally keep vehicle internal network always active
		private final NetworkRequest mDefaultVehicleRequest;

		// TODO replace with INetd.DUMMY_NET_ID when available.
		private static final int NO_SERVICE_NET_ID = 51;
		// Sentinel NAI used to direct apps with default networks that should have no connectivity to a
		// network with no service. This NAI should never be matched against, nor should any public API
		// ever return the associated network. For this reason, this NAI is not in the list of available
		// NAIs. It is used in computeNetworkReassignment() to be set as the satisfier for non-device
		// default requests that don't support using the device default network which will ultimately
		// allow ConnectivityService to use this no-service network when calling makeDefaultForApps().
		@VisibleForTesting
		final NetworkAgentInfo mNoServiceNetwork;

		// TODO: b/178729499 update this in favor of a method taking in a UID.
		// The NetworkAgentInfo currently satisfying the default request, if any.
		private NetworkAgentInfo getDefaultNetwork() {
		@@ -6165,8 +6221,6 @@ public class ConnectivityService extends IConnectivityManager.Stub

		LinkProperties lp = new LinkProperties(linkProperties);

		// TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network
		// satisfies mDefaultRequest.
		final NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities);
		final NetworkAgentInfo nai = new NetworkAgentInfo(na,
		new Network(mNetIdManager.reserveNetId()), new NetworkInfo(networkInfo), lp, nc,
		@@ -7233,20 +7287,19 @@ public class ConnectivityService extends IConnectivityManager.Stub
		log("Switching to new default network for: " + nri + " using " + newDefaultNetwork);
		}

		try {
		// TODO http://b/176191930 update netd calls in follow-up CL for multinetwork changes.
		// Fix up the NetworkCapabilities of any networks that have this network as underlying.
		if (newDefaultNetwork != null) {
		propagateUnderlyingNetworkCapabilities(newDefaultNetwork.network);
		}

		// Set an app level managed default and return since further processing only applies to the
		// default network.
		if (mDefaultRequest != nri) {
		makeDefaultForApps(nri, oldDefaultNetwork, newDefaultNetwork);
		return;
		}

		if (null != newDefaultNetwork) {
		mNetd.networkSetDefault(newDefaultNetwork.network.getNetId());
		} else {
		mNetd.networkClearDefault();
		}
		} catch (RemoteException \| ServiceSpecificException e) {
		loge("Exception setting default network :" + e);
		}
		makeDefaultNetwork(newDefaultNetwork);

		if (oldDefaultNetwork != null) {
		mLingerMonitor.noteLingerDefaultNetwork(oldDefaultNetwork, newDefaultNetwork);
		@@ -7258,10 +7311,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
		updateTcpBufferSizes(null != newDefaultNetwork
		? newDefaultNetwork.linkProperties.getTcpBufferSizes() : null);
		notifyIfacesChangedForNetworkStats();
		// Fix up the NetworkCapabilities of any networks that have this network as underlying.
		if (newDefaultNetwork != null) {
		propagateUnderlyingNetworkCapabilities(newDefaultNetwork.network);
		}

		// Log 0 -> X and Y -> X default network transitions, where X is the new default.
		final Network network = (newDefaultNetwork != null) ? newDefaultNetwork.network : null;
		@@ -7285,6 +7334,49 @@ public class ConnectivityService extends IConnectivityManager.Stub
		prevNetwork, prevScore, prevLp, prevNc);
		}

		private void makeDefaultForApps(@NonNull final NetworkRequestInfo nri,
		@Nullable final NetworkAgentInfo oldDefaultNetwork,
		@Nullable final NetworkAgentInfo newDefaultNetwork) {
		try {
		if (VDBG) {
		log("Setting default network for " + nri
		+ " using UIDs " + nri.getUids()
		+ " with old network " + (oldDefaultNetwork != null
		? oldDefaultNetwork.network().getNetId() : "null")
		+ " and new network " + (newDefaultNetwork != null
		? newDefaultNetwork.network().getNetId() : "null"));
		}
		if (nri.getUids().isEmpty()) {
		throw new IllegalStateException("makeDefaultForApps called without specifying"
		+ " any applications to set as the default." + nri);
		}
		if (null != newDefaultNetwork) {
		mNetd.networkAddUidRanges(
		newDefaultNetwork.network.getNetId(),
		toUidRangeStableParcels(nri.getUids()));
		}
		if (null != oldDefaultNetwork) {
		mNetd.networkRemoveUidRanges(
		oldDefaultNetwork.network.getNetId(),
		toUidRangeStableParcels(nri.getUids()));
		}
		} catch (RemoteException \| ServiceSpecificException e) {
		loge("Exception setting OEM network preference default network :" + e);
		}
		}

		private void makeDefaultNetwork(@Nullable final NetworkAgentInfo newDefaultNetwork) {
		try {
		if (null != newDefaultNetwork) {
		mNetd.networkSetDefault(newDefaultNetwork.network.getNetId());
		} else {
		mNetd.networkClearDefault();
		}
		} catch (RemoteException \| ServiceSpecificException e) {
		loge("Exception setting default network :" + e);
		}
		}

		private void processListenRequests(@NonNull final NetworkAgentInfo nai) {
		// For consistency with previous behaviour, send onLost callbacks before onAvailable.
		processNewlyLostListenRequests(nai);
		@@ -7406,9 +7498,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
		@Nullable final NetworkAgentInfo previousSatisfier,
		@Nullable final NetworkAgentInfo newSatisfier,
		final long now) {
		if (newSatisfier != null) {
		if (null != newSatisfier && mNoServiceNetwork != newSatisfier) {
		if (VDBG) log("rematch for " + newSatisfier.toShortString());
		if (previousSatisfier != null) {
		if (null != previousSatisfier && mNoServiceNetwork != previousSatisfier) {
		if (VDBG \|\| DDBG) {
		log(" accepting network in place of " + previousSatisfier.toShortString());
		}
		@@ -7422,7 +7514,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		Log.wtf(TAG, "BUG: " + newSatisfier.toShortString() + " already has "
		+ newRequest);
		}
		} else {
		} else if (null != previousSatisfier) {
		if (DBG) {
		log("Network " + previousSatisfier.toShortString() + " stopped satisfying"
		+ " request " + previousRequest.requestId);
		@@ -7473,7 +7565,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
		break;
		}
		}
		if (bestNetwork != nri.mSatisfier) {
		if (null == bestNetwork && isDefaultBlocked(nri)) {
		// Remove default networking if disallowed for managed default requests.
		bestNetwork = mNoServiceNetwork;
		}
		if (nri.getSatisfier() != bestNetwork) {
		// bestNetwork may be null if no network can satisfy this request.
		changes.addRequestReassignment(new NetworkReassignment.RequestReassignment(
		nri, nri.mActiveRequest, bestRequest, nri.getSatisfier(), bestNetwork));