Add a new API for initing Wifi multicast filtering (e2d155a5) · Commits · e / os / android_frameworks_base

services/java/com/android/server/WifiService.java

+13 −0

Original line number	Diff line number	Diff line
		@@ -1829,6 +1829,19 @@ public class WifiService extends IWifiManager.Stub {
		}
		}

		public void initializeMulticastFiltering() {
		enforceMulticastChangePermission();

		synchronized (mMulticasters) {
		// if anybody had requested filters be off, leave off
		if (mMulticasters.size() != 0) {
		return;
		} else {
		WifiNative.startPacketFiltering();
		}
		}
		}

		public void acquireMulticastLock(IBinder binder, String tag) {
		enforceMulticastChangePermission();

+2 −0

Original line number	Diff line number	Diff line
		@@ -70,6 +70,8 @@ interface IWifiManager

		boolean releaseWifiLock(IBinder lock);

		void initializeMulticastFiltering();

		boolean isMulticastEnabled();

		void acquireMulticastLock(IBinder binder, String tag);

+13 −0

Original line number	Diff line number	Diff line
		@@ -1056,4 +1056,17 @@ public class WifiManager {
		return false;
		}
		}

		/**
		* Initialize the multicast filtering to 'on'
		* @hide no intent to publish
		*/
		public boolean initializeMulticastFiltering() {
		try {
		mService.initializeMulticastFiltering();
		return true;
		} catch (RemoteException e) {
		return false;
		}
		}
		}

+1 −9

Original line number	Diff line number	Diff line
		@@ -786,16 +786,8 @@ public class WifiStateTracker extends NetworkStateTracker {
		* Filter out multicast packets. This saves battery power, since
		* the CPU doesn't have to spend time processing packets that
		* are going to end up being thrown away.
		*
		* Note that rather than turn this off directly, we use the
		* public api - this keeps us all in sync - turn multicast on
		* first and then off.. if nobody else wants it on it'll be
		* off then and it's all synchronized within the API.
		*/
		WifiManager.MulticastLock l =
		mWM.createMulticastLock("WifiStateTracker");
		l.acquire();
		l.release();
		*/
		mWM.initializeMulticastFiltering();

		if (mBluetoothA2dp == null) {
		mBluetoothA2dp = new BluetoothA2dp(mContext);