am fe5b5d37: Merge "Implement incremental data stall recovery in GSM DCT" into honeycomb-LTE (2ead69e1) · Commits · e / os / android_frameworks_base

telephony/java/com/android/internal/telephony/gsm/GsmDataConnectionTracker.java

+40 −6

Original line number	Diff line number	Diff line
		@@ -101,6 +101,10 @@ public final class GsmDataConnectionTracker extends DataConnectionTracker {
		// call reRegisterNetwork, or pingTest succeeds.
		private int mPdpResetCount = 0;

		// Recovery action taken in case of data stall
		enum RecoveryAction {REREGISTER, RADIO_RESTART, RADIO_RESET};
		private RecoveryAction mRecoveryAction = RecoveryAction.REREGISTER;


		//***** Constants

		@@ -1132,12 +1136,40 @@ public final class GsmDataConnectionTracker extends DataConnectionTracker {
		cleanUpAllConnections(true, Phone.REASON_PDP_RESET);
		} else {
		mPdpResetCount = 0;
		switch (mRecoveryAction) {
		case REREGISTER:
		EventLog.writeEvent(EventLogTags.PDP_REREGISTER_NETWORK, mSentSinceLastRecv);
		if (DBG) log("doRecovery() re-register getting preferred network type");
		mPhone.getServiceStateTracker().reRegisterNetwork(null);
		mRecoveryAction = RecoveryAction.RADIO_RESTART;
		break;
		case RADIO_RESTART:
		EventLog.writeEvent(EventLogTags.PDP_RADIO_RESET, mSentSinceLastRecv);
		if (DBG) log("restarting radio");
		mRecoveryAction = RecoveryAction.RADIO_RESET;
		restartRadio();
		break;
		case RADIO_RESET:
		// This is in case radio restart has not recovered the data.
		// It will set an additional "gsm.radioreset" property to tell
		// RIL or system to take further action.
		// The implementation of hard reset recovery action is up to OEM product.
		// Once gsm.radioreset property is consumed, it is expected to set back
		// to false by RIL.
		EventLog.writeEvent(EventLogTags.PDP_RADIO_RESET, -1);
		if (DBG) log("restarting radio with reset indication");
		SystemProperties.set("gsm.radioreset", "true");
		// give 1 sec so property change can be notified.
		try {
		Thread.sleep(1000);
		} catch (InterruptedException e) {}
		restartRadio();
		break;
		default:
		throw new RuntimeException("doRecovery: Invalid mRecoveryAction " +
		mRecoveryAction);
		}
		}
		// TODO: Add increasingly drastic recovery steps, eg,
		// reset the radio, reset the device.
		} else {
		if (DBG) log("doRecovery(): ignore, we're not connected");
		}
		@@ -1202,6 +1234,7 @@ public final class GsmDataConnectionTracker extends DataConnectionTracker {
		mSentSinceLastRecv = 0;
		newActivity = Activity.DATAINANDOUT;
		mPdpResetCount = 0;
		mRecoveryAction = RecoveryAction.REREGISTER;
		} else if (sent > 0 && received == 0) {
		if (mPhone.getState() == Phone.State.IDLE) {
		mSentSinceLastRecv += sent;
		@@ -1213,6 +1246,7 @@ public final class GsmDataConnectionTracker extends DataConnectionTracker {
		mSentSinceLastRecv = 0;
		newActivity = Activity.DATAIN;
		mPdpResetCount = 0;
		mRecoveryAction = RecoveryAction.REREGISTER;
		} else if (sent == 0 && received == 0) {
		newActivity = Activity.NONE;
		} else {
		@@ -1255,7 +1289,7 @@ public final class GsmDataConnectionTracker extends DataConnectionTracker {
		} else {
		if (DBG) log("Polling: Sent " + String.valueOf(mSentSinceLastRecv) +
		" pkts since last received start recovery process");
		stopNetStatPoll();
		mNoRecvPollCount = 0;
		sendMessage(obtainMessage(EVENT_START_RECOVERY));
		}
		} else {