Merge "Get RDNSS option information from kernel instead of Netd." (f3dd8d71) · Commits · e / os / android_packages_modules_NetworkStack

src/android/net/ip/IpClient.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -715,7 +715,7 @@ public class IpClient extends StateMachine {
		(ifaceUp) -> sendMessage(EVENT_NETLINK_LINKPROPERTIES_CHANGED, ifaceUp
		? ARG_LINKPROP_CHANGED_LINKSTATE_UP
		: ARG_LINKPROP_CHANGED_LINKSTATE_DOWN),
		config, mLog) {
		config, mLog, mDependencies) {
		@Override
		public void onInterfaceAdded(String iface) {
		super.onInterfaceAdded(iface);

src/android/net/ip/IpClientLinkObserver.java

+40 −12

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.net.ip;

		import static android.net.util.NetworkStackUtils.IPCLIENT_PARSE_NETLINK_EVENTS_VERSION;
		import static android.system.OsConstants.AF_INET6;

		import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ROUTER_ADVERTISEMENT;
		@@ -37,6 +38,7 @@ import com.android.net.module.util.netlink.NduseroptMessage;
		import com.android.net.module.util.netlink.NetlinkConstants;
		import com.android.net.module.util.netlink.NetlinkMessage;
		import com.android.net.module.util.netlink.StructNdOptPref64;
		import com.android.net.module.util.netlink.StructNdOptRdnss;
		import com.android.networkstack.apishim.NetworkInformationShimImpl;
		import com.android.networkstack.apishim.common.NetworkInformationShim;
		import com.android.server.NetworkObserver;
		@@ -107,6 +109,7 @@ public class IpClientLinkObserver implements NetworkObserver {
		}
		}

		private final Context mContext;
		private final String mInterfaceName;
		private final Callback mCallback;
		private final LinkProperties mLinkProperties;
		@@ -115,13 +118,15 @@ public class IpClientLinkObserver implements NetworkObserver {
		private final AlarmManager mAlarmManager;
		private final Configuration mConfig;
		private final Handler mHandler;
		private final IpClient.Dependencies mDependencies;

		private final MyNetlinkMonitor mNetlinkMonitor;

		private static final boolean DBG = false;

		public IpClientLinkObserver(Context context, Handler h, String iface, Callback callback,
		Configuration config, SharedLog log) {
		Configuration config, SharedLog log, IpClient.Dependencies deps) {
		mContext = context;
		mInterfaceName = iface;
		mTag = "NetlinkTracker/" + mInterfaceName;
		mCallback = callback;
		@@ -134,6 +139,7 @@ public class IpClientLinkObserver implements NetworkObserver {
		mAlarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
		mNetlinkMonitor = new MyNetlinkMonitor(h, log, mTag);
		mHandler.post(mNetlinkMonitor::start);
		mDependencies = deps;
		}

		public void shutdown() {
		@@ -153,6 +159,11 @@ public class IpClientLinkObserver implements NetworkObserver {
		}
		}

		private boolean isNetlinkEventParsingEnabled() {
		return mDependencies.isFeatureEnabled(mContext, IPCLIENT_PARSE_NETLINK_EVENTS_VERSION,
		false /* default value */);
		}

		@Override
		public void onInterfaceRemoved(String iface) {
		maybeLog("interfaceRemoved", iface);
		@@ -246,8 +257,13 @@ public class IpClientLinkObserver implements NetworkObserver {

		@Override
		public void onInterfaceDnsServerInfo(String iface, long lifetime, String[] addresses) {
		if (mInterfaceName.equals(iface)) {
		if (isNetlinkEventParsingEnabled()) return;
		if (!mInterfaceName.equals(iface)) return;
		maybeLog("interfaceDnsServerInfo", Arrays.toString(addresses));
		updateInterfaceDnsServerInfo(lifetime, addresses);
		}

		private void updateInterfaceDnsServerInfo(long lifetime, final String[] addresses) {
		final boolean changed = mDnsServerRepository.addServers(lifetime, addresses);
		final boolean linkState;
		if (changed) {
		@@ -258,7 +274,6 @@ public class IpClientLinkObserver implements NetworkObserver {
		mCallback.update(linkState);
		}
		}
		}

		/**
		* Returns a copy of this object's LinkProperties.
		@@ -408,6 +423,15 @@ public class IpClientLinkObserver implements NetworkObserver {
		updatePref64(opt.prefix, now, expiry);
		}

		private void processRdnssOption(StructNdOptRdnss opt) {
		if (!isNetlinkEventParsingEnabled()) return;
		final String[] addresses = new String[opt.servers.length];
		for (int i = 0; i < opt.servers.length; i++) {
		addresses[i] = opt.servers[i].getHostAddress();
		}
		updateInterfaceDnsServerInfo(opt.header.lifetime, addresses);
		}

		private void processNduseroptMessage(NduseroptMessage msg, final long whenMs) {
		if (msg.family != AF_INET6 \|\| msg.option == null \|\| msg.ifindex != mIfindex) return;
		if (msg.icmp_type != (byte) ICMPV6_ROUTER_ADVERTISEMENT) return;
		@@ -417,8 +441,12 @@ public class IpClientLinkObserver implements NetworkObserver {
		processPref64Option((StructNdOptPref64) msg.option, whenMs);
		break;

		case StructNdOptRdnss.TYPE:
		processRdnssOption((StructNdOptRdnss) msg.option);
		break;

		default:
		// TODO: implement RDNSS and DNSSL.
		// TODO: implement DNSSL.
		break;
		}
		}

src/android/net/util/NetworkStackUtils.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -249,6 +249,13 @@ public class NetworkStackUtils {
		public static final String IPCLIENT_GARP_NA_ROAMING_VERSION =
		"ipclient_garp_na_roaming_version";

		/**
		* Experiment flag to enable parsing netlink events from kernel directly instead from netd aidl
		* interface.
		*/
		public static final String IPCLIENT_PARSE_NETLINK_EVENTS_VERSION =
		"ipclient_parse_netlink_events_version";

		/**
		* Experiment flag to disable accept_ra parameter when IPv6 provisioning loss happens due to
		* the default route has gone.