Collect and persist tethering stats. (cdd02c5d) · Commits · e / os / android_frameworks_base

core/java/android/net/IConnectivityManager.aidl

+6 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,12 @@ interface IConnectivityManager

		String[] getTetheredIfaces();

		/**
		* Return list of interface pairs that are actively tethered. Even indexes are
		* remote interface, and odd indexes are corresponding local interfaces.
		*/
		String[] getTetheredIfacePairs();

		String[] getTetheringErroredIfaces();

		String[] getTetherableUsbRegexs();

core/java/android/net/TrafficStats.java

+15 −3

Original line number	Diff line number	Diff line
		@@ -52,26 +52,34 @@ public class TrafficStats {
		*/
		public static final int UID_REMOVED = -4;

		/**
		* Special UID value used when collecting {@link NetworkStatsHistory} for
		* tethering traffic.
		*
		* @hide
		*/
		public static final int UID_TETHERING = -5;

		/**
		* Default tag value for {@link DownloadManager} traffic.
		*
		* @hide
		*/
		public static final int TAG_SYSTEM_DOWNLOAD = 0xFFFF0001;
		public static final int TAG_SYSTEM_DOWNLOAD = 0xFFFFFF01;

		/**
		* Default tag value for {@link MediaPlayer} traffic.
		*
		* @hide
		*/
		public static final int TAG_SYSTEM_MEDIA = 0xFFFF0002;
		public static final int TAG_SYSTEM_MEDIA = 0xFFFFFF02;

		/**
		* Default tag value for {@link BackupManager} traffic.
		*
		* @hide
		*/
		public static final int TAG_SYSTEM_BACKUP = 0xFFFF0003;
		public static final int TAG_SYSTEM_BACKUP = 0xFFFFFF03;

		/**
		* Snapshot of {@link NetworkStats} when the currently active profiling
		@@ -90,6 +98,10 @@ public class TrafficStats {
		* <p>
		* Changes only take effect during subsequent calls to
		* {@link #tagSocket(Socket)}.
		* <p>
		* Tags between {@code 0xFFFFFF00} and {@code 0xFFFFFFFF} are reserved and
		* used internally by system services like {@link DownloadManager} when
		* performing traffic on behalf of an application.
		*/
		public static void setThreadStatsTag(int tag) {
		NetworkManagementSocketTagger.setThreadSocketStatsTag(tag);

core/java/android/os/INetworkManagementService.aidl

+7 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,13 @@ interface INetworkManagementService
		*/
		NetworkStats getNetworkStatsUidDetail(int uid);

		/**
		* Return summary of network statistics for the requested pairs of
		* tethering interfaces. Even indexes are remote interface, and odd
		* indexes are corresponding local interfaces.
		*/
		NetworkStats getNetworkStatsTethering(in String[] ifacePairs);

		/**
		* Set quota for an interface.
		*/

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

+6 −0

Original line number	Diff line number	Diff line
		@@ -2394,6 +2394,12 @@ public class ConnectivityService extends IConnectivityManager.Stub {
		return mTethering.getTetheredIfaces();
		}

		@Override
		public String[] getTetheredIfacePairs() {
		enforceTetherAccessPermission();
		return mTethering.getTetheredIfacePairs();
		}

		public String[] getTetheringErroredIfaces() {
		enforceTetherAccessPermission();
		return mTethering.getErroredIfaces();

services/java/com/android/server/NetworkManagementService.java

+69 −0

Original line number	Diff line number	Diff line
		@@ -123,6 +123,8 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		public static final int InterfaceTxCounterResult = 217;
		public static final int InterfaceRxThrottleResult = 218;
		public static final int InterfaceTxThrottleResult = 219;
		public static final int QuotaCounterResult = 220;
		public static final int TetheringStatsResult = 221;

		public static final int InterfaceChange = 600;
		public static final int BandwidthControl = 601;
		@@ -1443,6 +1445,73 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		return stats;
		}

		@Override
		public NetworkStats getNetworkStatsTethering(String[] ifacePairs) {
		mContext.enforceCallingOrSelfPermission(
		android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService");

		if (ifacePairs.length % 2 != 0) {
		throw new IllegalArgumentException(
		"unexpected ifacePairs; length=" + ifacePairs.length);
		}

		final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(), 1);
		for (int i = 0; i < ifacePairs.length; i += 2) {
		final String ifaceIn = ifacePairs[i];
		final String ifaceOut = ifacePairs[i + 1];
		if (ifaceIn != null && ifaceOut != null) {
		stats.combineValues(getNetworkStatsTethering(ifaceIn, ifaceOut));
		}
		}
		return stats;
		}

		private NetworkStats.Entry getNetworkStatsTethering(String ifaceIn, String ifaceOut) {
		final StringBuilder command = new StringBuilder();
		command.append("bandwidth gettetherstats ").append(ifaceIn).append(" ").append(ifaceOut);

		final String rsp;
		try {
		rsp = mConnector.doCommand(command.toString()).get(0);
		} catch (NativeDaemonConnectorException e) {
		throw new IllegalStateException("Error communicating to native daemon", e);
		}

		final String[] tok = rsp.split(" ");
		/* Expecting: "code ifaceIn ifaceOut rx_bytes rx_packets tx_bytes tx_packets" */
		if (tok.length != 7) {
		throw new IllegalStateException("Native daemon returned unexpected result: " + rsp);
		}

		final int code;
		try {
		code = Integer.parseInt(tok[0]);
		} catch (NumberFormatException e) {
		throw new IllegalStateException(
		"Failed to parse native daemon return code for " + ifaceIn + " " + ifaceOut);
		}
		if (code != NetdResponseCode.TetheringStatsResult) {
		throw new IllegalStateException(
		"Unexpected return code from native daemon for " + ifaceIn + " " + ifaceOut);
		}

		try {
		final NetworkStats.Entry entry = new NetworkStats.Entry();
		entry.iface = ifaceIn;
		entry.uid = UID_ALL;
		entry.set = SET_DEFAULT;
		entry.tag = TAG_NONE;
		entry.rxBytes = Long.parseLong(tok[3]);
		entry.rxPackets = Long.parseLong(tok[4]);
		entry.txBytes = Long.parseLong(tok[5]);
		entry.txPackets = Long.parseLong(tok[6]);
		return entry;
		} catch (NumberFormatException e) {
		throw new IllegalStateException(
		"problem parsing tethering stats for " + ifaceIn + " " + ifaceOut + ": " + e);
		}
		}

		public void setInterfaceThrottle(String iface, int rxKbps, int txKbps) {
		mContext.enforceCallingOrSelfPermission(
		android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService");