SupplicantWifiScannerImpl.java revision 5cdc80d103ebd2935693a8d855162d55bed2821c
19ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills/* 29ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * Copyright (C) 2015 The Android Open Source Project 39ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * 49ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * Licensed under the Apache License, Version 2.0 (the "License"); 59ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * you may not use this file except in compliance with the License. 69ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * You may obtain a copy of the License at 79ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * 89ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * http://www.apache.org/licenses/LICENSE-2.0 99ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * 109ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * Unless required by applicable law or agreed to in writing, software 119ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * distributed under the License is distributed on an "AS IS" BASIS, 129ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * See the License for the specific language governing permissions and 149ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * limitations under the License. 159ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills */ 169ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 17a8367288377cbaed6371256ca837b7aa22280706Mitchell Willspackage com.android.server.wifi.scanner; 189ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 199ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.app.AlarmManager; 209ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.content.Context; 219ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.net.wifi.ScanResult; 229153bd67d51b305ffdd61355e0748e3c332c2cafRoshan Piusimport android.net.wifi.WifiConfiguration; 239ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.net.wifi.WifiScanner; 249ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.os.Handler; 259ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.os.Looper; 269ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.os.Message; 279ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.os.SystemClock; 289ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport android.util.Log; 299ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 3062bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Piusimport com.android.internal.R; 31a8367288377cbaed6371256ca837b7aa22280706Mitchell Willsimport com.android.server.wifi.ScanDetail; 32a8367288377cbaed6371256ca837b7aa22280706Mitchell Willsimport com.android.server.wifi.WifiMonitor; 33a8367288377cbaed6371256ca837b7aa22280706Mitchell Willsimport com.android.server.wifi.WifiNative; 347e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Willsimport com.android.server.wifi.scanner.ChannelHelper.ChannelCollection; 357e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills 369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.ArrayDeque; 379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.ArrayList; 389ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.Arrays; 399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.Collections; 40d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Piusimport java.util.HashSet; 419ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.List; 429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willsimport java.util.Set; 439ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 44f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills/** 455fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills * Implementation of the WifiScanner HAL API that uses wpa_supplicant to perform all scans 46a8367288377cbaed6371256ca837b7aa22280706Mitchell Wills * @see com.android.server.wifi.scanner.WifiScannerImpl for more details on each method. 47f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills */ 489ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Willspublic class SupplicantWifiScannerImpl extends WifiScannerImpl implements Handler.Callback { 499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final String TAG = "SupplicantWifiScannerImpl"; 509ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final boolean DBG = false; 519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 529d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills public static final String BACKGROUND_PERIOD_ALARM_TAG = TAG + " Background Scan Period"; 539d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills public static final String TIMEOUT_ALARM_TAG = TAG + " Scan Timeout"; 549d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills 559ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final int SCAN_BUFFER_CAPACITY = 10; 569ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final int MAX_APS_PER_SCAN = 32; 579ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final int MAX_SCAN_BUCKETS = 16; 589ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 599ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static final String ACTION_SCAN_PERIOD = 609ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills "com.android.server.util.SupplicantWifiScannerImpl.action.SCAN_PERIOD"; 619ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 629ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private final Context mContext; 639ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private final WifiNative mWifiNative; 649ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private final AlarmManager mAlarmManager; 659ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private final Handler mEventHandler; 667e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills private final ChannelHelper mChannelHelper; 679ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 689ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private Object mSettingsLock = new Object(); 699ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 709ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // Next scan settings to apply when the previous scan completes 715fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanSettings mPendingBackgroundScanSettings = null; 725fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanEventHandler mPendingBackgroundScanEventHandler = null; 735fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanSettings mPendingSingleScanSettings = null; 745fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanEventHandler mPendingSingleScanEventHandler = null; 755fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // Active background scan settings/state 775fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanSettings mBackgroundScanSettings = null; 785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiNative.ScanEventHandler mBackgroundScanEventHandler = null; 795fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private int mNextBackgroundScanPeriod = 0; 805fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private int mNextBackgroundScanId = 0; 815fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private boolean mBackgroundScanPeriodPending = false; 825fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private boolean mBackgroundScanPaused = false; 835fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private ScanBuffer mBackgroundScanBuffer = new ScanBuffer(SCAN_BUFFER_CAPACITY); 845fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 855fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private WifiScanner.ScanData mLatestSingleScanResult = 865fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills new WifiScanner.ScanData(0, 0, new ScanResult[0]); 875fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 885fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // Settings for the currently running scan, null if no scan active 899ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private LastScanSettings mLastScanSettings = null; 909ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 919ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // Active hotlist settings 929ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private WifiNative.HotlistEventHandler mHotlistHandler = null; 939ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private ChangeBuffer mHotlistChangeBuffer = new ChangeBuffer(); 949ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 959153bd67d51b305ffdd61355e0748e3c332c2cafRoshan Pius // Pno related info. 96063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius private WifiNative.PnoSettings mPnoSettings = null; 979153bd67d51b305ffdd61355e0748e3c332c2cafRoshan Pius private WifiNative.PnoEventHandler mPnoEventHandler; 9862bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius private final boolean mHwPnoScanSupported; 99e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final HwPnoDebouncer mHwPnoDebouncer; 100e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final HwPnoDebouncer.Listener mHwPnoDebouncerListener = new HwPnoDebouncer.Listener() { 101e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public void onPnoScanFailed() { 102e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius Log.e(TAG, "Pno scan failure received"); 103e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius reportPnoScanFailure(); 104e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 105e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius }; 1069153bd67d51b305ffdd61355e0748e3c332c2cafRoshan Pius 1079d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills /** 1089d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills * Duration to wait before timing out a scan. 1099d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills * 1109d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills * The expected behavior is that the hardware will return a failed scan if it does not 1119d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills * complete, but timeout just in case it does not. 1129d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills */ 113a85fc1b07490d3ff194a98fe7389f6697ace5801Roshan Pius private static final long SCAN_TIMEOUT_MS = 15000; 1149d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills 11541e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills AlarmManager.OnAlarmListener mScanPeriodListener = new AlarmManager.OnAlarmListener() { 11641e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills public void onAlarm() { 11741e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills synchronized (mSettingsLock) { 11841e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills handleScanPeriod(); 11941e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills } 12041e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills } 12141e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills }; 12241e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills 1239d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills AlarmManager.OnAlarmListener mScanTimeoutListener = new AlarmManager.OnAlarmListener() { 1249d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills public void onAlarm() { 1259d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills synchronized (mSettingsLock) { 1269d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills handleScanTimeout(); 1279d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 1289d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 1299d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills }; 1309d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills 1312332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius public SupplicantWifiScannerImpl(Context context, WifiNative wifiNative, 1322332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius ChannelHelper channelHelper, Looper looper) { 1339ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mContext = context; 1349ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mWifiNative = wifiNative; 1352332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius mChannelHelper = channelHelper; 1369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 1379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mEventHandler = new Handler(looper, this); 138e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mHwPnoDebouncer = new HwPnoDebouncer(mWifiNative, mAlarmManager, mEventHandler); 1397d2d8c27647676c51208e417afbb8dd6c6784b7cMitchell Wills 14062bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius // Check if the device supports HW PNO scans. 14162bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius mHwPnoScanSupported = mContext.getResources().getBoolean( 14262bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius R.bool.config_wifi_background_scan_support); 14362bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius 1448adb4e72f58e3e25918f33e0b2687e6acc14c47dMitchell Wills WifiMonitor.getInstance().registerHandler(mWifiNative.getInterfaceName(), 1458adb4e72f58e3e25918f33e0b2687e6acc14c47dMitchell Wills WifiMonitor.SCAN_FAILED_EVENT, mEventHandler); 1468adb4e72f58e3e25918f33e0b2687e6acc14c47dMitchell Wills WifiMonitor.getInstance().registerHandler(mWifiNative.getInterfaceName(), 1478adb4e72f58e3e25918f33e0b2687e6acc14c47dMitchell Wills WifiMonitor.SCAN_RESULTS_EVENT, mEventHandler); 1489ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 1499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 1502332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius public SupplicantWifiScannerImpl(Context context, WifiNative wifiNative, Looper looper) { 1512332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius // TODO figure out how to get channel information from supplicant 1522332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius this(context, wifiNative, new NoBandChannelHelper(), looper); 1532332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 1542332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 1559ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 1561e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills public void cleanup() { 1571e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills synchronized (mSettingsLock) { 1581e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills mPendingSingleScanSettings = null; 1591e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills mPendingSingleScanEventHandler = null; 16062bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius stopHwPnoScan(); 1611e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills stopBatchedScan(); 1621e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills resetHotlist(); 1631e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills untrackSignificantWifiChange(); 1641e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills mLastScanSettings = null; // finally clear any active scan 1651e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills } 1661e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills } 1671e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills 1681e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills @Override 1699ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public boolean getScanCapabilities(WifiNative.ScanCapabilities capabilities) { 1709ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_scan_cache_size = Integer.MAX_VALUE; 1719ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_scan_buckets = MAX_SCAN_BUCKETS; 1729ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_ap_cache_per_scan = MAX_APS_PER_SCAN; 1739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_rssi_sample_size = 8; 1749ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_scan_reporting_threshold = SCAN_BUFFER_CAPACITY; 1759ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_hotlist_bssids = 0; 1769ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills capabilities.max_significant_wifi_change_aps = 0; 1775ed43368643dab64c83bfb15e14ab59d63645c6fMitchell Wills return true; 1789ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 1799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 1809ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 1817e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills public ChannelHelper getChannelHelper() { 1827e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills return mChannelHelper; 1837e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills } 1847e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills 1857e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills @Override 186f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills public boolean startSingleScan(WifiNative.ScanSettings settings, 187f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills WifiNative.ScanEventHandler eventHandler) { 1885fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (eventHandler == null || settings == null) { 1895fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills Log.w(TAG, "Invalid arguments for startSingleScan: settings=" + settings 1905fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills + ",eventHandler=" + eventHandler); 1915fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return false; 1925fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 1935fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingSingleScanSettings != null 1945fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills || (mLastScanSettings != null && mLastScanSettings.singleScanActive)) { 1955fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills Log.w(TAG, "A single scan is already running"); 1965fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return false; 1975fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 1985fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 1995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanSettings = settings; 2005fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanEventHandler = eventHandler; 2015fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills processPendingScans(); 2025fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return true; 2035fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 204f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills } 205f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills 206f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills @Override 207f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills public WifiScanner.ScanData getLatestSingleScanResults() { 2085fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return mLatestSingleScanResult; 209f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills } 210f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills 211f2f6f79242454ff9161f5af772292fa0180436f8Mitchell Wills @Override 2129ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public boolean startBatchedScan(WifiNative.ScanSettings settings, 2139ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills WifiNative.ScanEventHandler eventHandler) { 2145fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings == null || eventHandler == null) { 2155fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills Log.w(TAG, "Invalid arguments for startBatched: settings=" + settings 2165fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills + ",eventHandler=" + eventHandler); 2179ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2185fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2199ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2205fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings.max_ap_per_scan < 0 || settings.max_ap_per_scan > MAX_APS_PER_SCAN) { 2219ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2225fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2235fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings.num_buckets < 0 || settings.num_buckets > MAX_SCAN_BUCKETS) { 2249ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2255fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2265fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings.report_threshold_num_scans < 0 2275fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills || settings.report_threshold_num_scans > SCAN_BUFFER_CAPACITY) { 2289ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2295fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2305fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings.report_threshold_percent < 0 || settings.report_threshold_percent > 100) { 2319ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2325fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2335fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (settings.base_period_ms <= 0) { 2349ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2355fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills for (int i = 0; i < settings.num_buckets; ++i) { 2379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills WifiNative.BucketSettings bucket = settings.buckets[i]; 2385fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (bucket.period_ms % settings.base_period_ms != 0) { 2399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 2405fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2419ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2435fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 2449ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills stopBatchedScan(); 2455cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills if (DBG) { 2465cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills Log.d(TAG, "Starting scan num_buckets=" + settings.num_buckets + ", base_period=" 2475fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills + settings.base_period_ms + " ms"); 2485cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills } 2495fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanSettings = settings; 2505fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler = eventHandler; 2519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills handleScanPeriod(); // Try to start scan immediately 2529ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return true; 2539ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2549ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2559ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2569ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 2579ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void stopBatchedScan() { 2585fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 2595fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (DBG) Log.d(TAG, "Stopping scan"); 2605fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings = null; 2615fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanEventHandler = null; 2625fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanSettings = null; 2635fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler = null; 2645fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPaused = false; 2655fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPeriodPending = false; 2669ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills unscheduleScansLocked(); 2679ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2681e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills processPendingScans(); 2699ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2709ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2719ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 2729ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void pauseBatchedScan() { 2735fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 2745fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (DBG) Log.d(TAG, "Pausing scan"); 2759ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // if there isn't a pending scan then make the current scan pending 2765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingBackgroundScanSettings == null) { 2775fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanSettings = mBackgroundScanSettings; 2785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler = mBackgroundScanEventHandler; 2799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2805fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings = null; 2815fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanEventHandler = null; 2825fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPeriodPending = false; 2835fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPaused = true; 2849ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2859ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills unscheduleScansLocked(); 2869ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2879ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills WifiScanner.ScanData[] results = getLatestBatchedScanResults(/* flush = */ true); 2885fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingBackgroundScanEventHandler != null) { 2895fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler.onScanPaused(results); 2905fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 2919ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2921e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills processPendingScans(); 2939ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 2949ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 2959ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 2969ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void restartBatchedScan() { 2975fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 2985fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (DBG) Log.d(TAG, "Restarting scan"); 2995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingBackgroundScanEventHandler != null) { 3005fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler.onScanRestarted(); 3015fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3025fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPaused = false; 3039ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills handleScanPeriod(); 3049ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3059ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3069ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 3079ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private void unscheduleScansLocked() { 30841e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills mAlarmManager.cancel(mScanPeriodListener); 3091e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills if (mLastScanSettings != null) { 3101e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills mLastScanSettings.backgroundScanActive = false; 3111e806a7aac77f6f65ba299329e1fc452e0148b8dMitchell Wills } 3129ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3139ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 3149ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private void handleScanPeriod() { 3155fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 3165fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPeriodPending = true; 3175fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills processPendingScans(); 3185fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3195fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3205fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 3219d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills private void handleScanTimeout() { 3229d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills Log.e(TAG, "Timed out waiting for scan result from supplicant"); 3239d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills reportScanFailure(); 3249d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills processPendingScans(); 3259d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 3269d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills 3275fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private void processPendingScans() { 3285fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 32962bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius // Wait for the active scan result to come back to reschedule other scans, 33062bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius // unless if HW pno scan is running. Hw PNO scans are paused it if there 33162bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius // are other pending scans, 33262bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius if (mLastScanSettings != null && !mLastScanSettings.hwPnoScanActive) { 3339ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return; 3349ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3359ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 3367e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills ChannelCollection allFreqs = mChannelHelper.createChannelCollection(); 337d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius Set<Integer> hiddenNetworkIdSet = new HashSet<Integer>(); 33863539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills final LastScanSettings newScanSettings = 33963539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills new LastScanSettings(SystemClock.elapsedRealtime()); 3409ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 3415fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // Update scan settings if there is a pending scan 3425fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (!mBackgroundScanPaused) { 3435fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingBackgroundScanSettings != null) { 3445fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings = mPendingBackgroundScanSettings; 3455fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanEventHandler = mPendingBackgroundScanEventHandler; 3465fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mNextBackgroundScanPeriod = 0; 3475fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanSettings = null; 3485fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingBackgroundScanEventHandler = null; 3495fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPeriodPending = true; 3505fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3515fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mBackgroundScanPeriodPending) { 3525fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mBackgroundScanSettings != null) { 3535fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills int reportEvents = WifiScanner.REPORT_EVENT_NO_BATCH; // default to no batch 3545fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (int bucket_id = 0; bucket_id < mBackgroundScanSettings.num_buckets; 3555fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills ++bucket_id) { 3565fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills WifiNative.BucketSettings bucket = 3575fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings.buckets[bucket_id]; 3585fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mNextBackgroundScanPeriod % (bucket.period_ms 3595fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills / mBackgroundScanSettings.base_period_ms) == 0) { 3605fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((bucket.report_events 3615fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_AFTER_EACH_SCAN) != 0) { 3625fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills reportEvents |= WifiScanner.REPORT_EVENT_AFTER_EACH_SCAN; 3635fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3645fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((bucket.report_events 3655fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_FULL_SCAN_RESULT) != 0) { 3665fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills reportEvents |= WifiScanner.REPORT_EVENT_FULL_SCAN_RESULT; 3675fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3685fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // only no batch if all buckets specify it 3695fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((bucket.report_events 3705fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_NO_BATCH) == 0) { 3715fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills reportEvents &= ~WifiScanner.REPORT_EVENT_NO_BATCH; 3725fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3735fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 3747e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills allFreqs.addChannels(bucket); 3759ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3769ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3777e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills if (!allFreqs.isEmpty()) { 3785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills newScanSettings.setBackgroundScan(mNextBackgroundScanId++, 3795fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings.max_ap_per_scan, reportEvents, 3805fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings.report_threshold_num_scans, 3815fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanSettings.report_threshold_percent); 3829ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 38362bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius 384d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius int[] hiddenNetworkIds = mBackgroundScanSettings.hiddenNetworkIds; 385d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius if (hiddenNetworkIds != null) { 386d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius for (int i = 0; i < hiddenNetworkIds.length; i++) { 387d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius hiddenNetworkIdSet.add(hiddenNetworkIds[i]); 388d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius } 389d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius } 3909ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3915fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 3925fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mNextBackgroundScanPeriod++; 3935fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanPeriodPending = false; 3945fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mAlarmManager.set(AlarmManager.RTC_WAKEUP, 3955fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills System.currentTimeMillis() + mBackgroundScanSettings.base_period_ms, 3969d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills BACKGROUND_PERIOD_ALARM_TAG, mScanPeriodListener, mEventHandler); 3979ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 3985fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 3995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 4005fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mPendingSingleScanSettings != null) { 4015fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills boolean reportFullResults = false; 4027e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills ChannelCollection singleScanFreqs = mChannelHelper.createChannelCollection(); 4035fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (int i = 0; i < mPendingSingleScanSettings.num_buckets; ++i) { 4045fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills WifiNative.BucketSettings bucketSettings = 4055fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanSettings.buckets[i]; 4065fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((bucketSettings.report_events 4075fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_FULL_SCAN_RESULT) != 0) { 4085fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills reportFullResults = true; 4099ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4107e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills singleScanFreqs.addChannels(bucketSettings); 4117e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills allFreqs.addChannels(bucketSettings); 4129ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4135fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills newScanSettings.setSingleScan(reportFullResults, singleScanFreqs, 4145fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanEventHandler); 415d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius int[] hiddenNetworkIds = mPendingSingleScanSettings.hiddenNetworkIds; 416d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius if (hiddenNetworkIds != null) { 417d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius for (int i = 0; i < hiddenNetworkIds.length; i++) { 418d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius hiddenNetworkIdSet.add(hiddenNetworkIds[i]); 419d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius } 420d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius } 4215fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanSettings = null; 4225fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mPendingSingleScanEventHandler = null; 4235fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 4245fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 42562bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius if ((newScanSettings.backgroundScanActive || newScanSettings.singleScanActive) 42662bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius && !allFreqs.isEmpty()) { 42762bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius pauseHwPnoScan(); 4287e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills Set<Integer> freqs = allFreqs.getSupplicantScanFreqs(); 429d74ff28cdb01d3f711e0b0f0e99e51fdb221eaf2Roshan Pius boolean success = mWifiNative.scan(freqs, hiddenNetworkIdSet); 4305fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (success) { 4315fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // TODO handle scan timeout 4325cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills if (DBG) { 4335cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills Log.d(TAG, "Starting wifi scan for freqs=" + freqs 4345cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills + ", background=" + newScanSettings.backgroundScanActive 4355cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills + ", single=" + newScanSettings.singleScanActive); 4365cdc80d103ebd2935693a8d855162d55bed2821cMitchell Wills } 4375fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mLastScanSettings = newScanSettings; 4389d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills mAlarmManager.set(AlarmManager.RTC_WAKEUP, 4399d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills System.currentTimeMillis() + SCAN_TIMEOUT_MS, 4409d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills TIMEOUT_ALARM_TAG, mScanTimeoutListener, mEventHandler); 4415fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 44263539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills Log.e(TAG, "Failed to start scan, freqs=" + freqs); 44363539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills // indicate scan failure async 44463539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills mEventHandler.post(new Runnable() { 44563539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills public void run() { 44663539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills if (newScanSettings.singleScanEventHandler != null) { 44763539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills newScanSettings.singleScanEventHandler 44863539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills .onScanStatus(WifiNative.WIFI_SCAN_FAILED); 44963539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills } 45063539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills } 45163539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills }); 4529d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills // TODO(b/27769665) background scans should be failed too if scans fail enough 4535fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 454dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius } else if (isHwPnoScanRequired()) { 45562bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius newScanSettings.setHwPnoScan(mPnoEventHandler); 456e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (startHwPnoScan()) { 457063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius Log.d(TAG, "Starting wifi PNO scan"); 458063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mLastScanSettings = newScanSettings; 459063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } else { 460063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius Log.e(TAG, "Failed to start PNO scan"); 461063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius // indicate scan failure async 462063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mEventHandler.post(new Runnable() { 463063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius public void run() { 464063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius if (mPnoEventHandler != null) { 465063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mPnoEventHandler.onPnoScanFailed(); 466063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 467063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius // Clean up PNO state, we don't want to continue PNO scanning. 468063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mPnoSettings = null; 469063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mPnoEventHandler = null; 470063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 471063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius }); 472063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 4739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4749ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4759ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4769ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 4779ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 4789ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public boolean handleMessage(Message msg) { 4799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills switch(msg.what) { 4809ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills case WifiMonitor.SCAN_FAILED_EVENT: 4819ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills Log.w(TAG, "Scan failed"); 4829d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills mAlarmManager.cancel(mScanTimeoutListener); 4839d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills reportScanFailure(); 4845fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills processPendingScans(); 4859ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills break; 4869ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills case WifiMonitor.SCAN_RESULTS_EVENT: 4879d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills mAlarmManager.cancel(mScanTimeoutListener); 4889ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills pollLatestScanData(); 4895fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills processPendingScans(); 4909ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills break; 4919ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills default: 4929ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // ignore unknown event 4939ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4949ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return true; 4959ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 4969ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 4979d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills private void reportScanFailure() { 4989d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills synchronized (mSettingsLock) { 4999d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills if (mLastScanSettings != null) { 5009d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills if (mLastScanSettings.singleScanEventHandler != null) { 5019d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills mLastScanSettings.singleScanEventHandler 5029d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills .onScanStatus(WifiNative.WIFI_SCAN_FAILED); 5039d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 5049d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills // TODO(b/27769665) background scans should be failed too if scans fail enough 5059d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills mLastScanSettings = null; 5069d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 5079d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 5089d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills } 5099d0c558cab7c80a572a32ae70d501df15367fd5fMitchell Wills 510e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private void reportPnoScanFailure() { 511e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius synchronized (mSettingsLock) { 512e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mLastScanSettings != null && mLastScanSettings.hwPnoScanActive) { 513e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mLastScanSettings.pnoScanEventHandler != null) { 514e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mLastScanSettings.pnoScanEventHandler.onPnoScanFailed(); 515e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 516e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius // Clean up PNO state, we don't want to continue PNO scanning. 517e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mPnoSettings = null; 518e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mPnoEventHandler = null; 519e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mLastScanSettings = null; 520e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 521e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 522e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 523e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 5249ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private void pollLatestScanData() { 5255fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 5265fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings == null) { 5279ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // got a scan before we started scanning or after scan was canceled 5289ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return; 5299ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 5309ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 5315fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (DBG) Log.d(TAG, "Polling scan data for scan: " + mLastScanSettings.scanId); 5329ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills ArrayList<ScanDetail> nativeResults = mWifiNative.getScanResults(); 5335fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills List<ScanResult> singleScanResults = new ArrayList<>(); 5345fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills List<ScanResult> backgroundScanResults = new ArrayList<>(); 53562bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius List<ScanResult> hwPnoScanResults = new ArrayList<>(); 5369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills for (int i = 0; i < nativeResults.size(); ++i) { 5379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills ScanResult result = nativeResults.get(i).getScanResult(); 5389ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills long timestamp_ms = result.timestamp / 1000; // convert us -> ms 5399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (timestamp_ms > mLastScanSettings.startTime) { 5405fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings.backgroundScanActive) { 5415fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills backgroundScanResults.add(result); 5425fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 5435fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings.singleScanActive 5447e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills && mLastScanSettings.singleScanFreqs.containsChannel( 5457e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills result.frequency)) { 5465fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills singleScanResults.add(result); 5475fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 54862bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius if (mLastScanSettings.hwPnoScanActive) { 54962bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius hwPnoScanResults.add(result); 550063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 5515fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 5529ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // was a cached result in wpa_supplicant 5539ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 5549ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 55541e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills 5565fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings.backgroundScanActive) { 5575fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mBackgroundScanEventHandler != null) { 5585fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((mLastScanSettings.reportEvents 5595fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_FULL_SCAN_RESULT) != 0) { 5605fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (ScanResult scanResult : backgroundScanResults) { 561c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills // TODO(b/27506257): Fill in correct bucketsScanned value 562c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills mBackgroundScanEventHandler.onFullScanResult(scanResult, 0); 5635fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 56441e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills } 56541e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills } 56641e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills 5672771787818003e53e8175036a3d09688c783f350Mitchell Wills Collections.sort(backgroundScanResults, SCAN_RESULT_SORT_COMPARATOR); 5685fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills ScanResult[] scanResultsArray = new ScanResult[Math.min(mLastScanSettings.maxAps, 5695fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills backgroundScanResults.size())]; 5705fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (int i = 0; i < scanResultsArray.length; ++i) { 5715fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills scanResultsArray[i] = backgroundScanResults.get(i); 5725fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 5739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 5745fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((mLastScanSettings.reportEvents & WifiScanner.REPORT_EVENT_NO_BATCH) == 0) { 575c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills // TODO(b/27506257): Fill in correct bucketsScanned value 5765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanBuffer.add(new WifiScanner.ScanData(mLastScanSettings.scanId, 0, 5775fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills scanResultsArray)); 5785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 5799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 5805fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mBackgroundScanEventHandler != null) { 5815fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((mLastScanSettings.reportEvents 5825fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_FULL_SCAN_RESULT) != 0 5835fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills || (mLastScanSettings.reportEvents 5845fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills & WifiScanner.REPORT_EVENT_AFTER_EACH_SCAN) != 0 5855fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills || (mLastScanSettings.reportEvents 5865fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills == WifiScanner.REPORT_EVENT_AFTER_BUFFER_FULL 5875fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills && (mBackgroundScanBuffer.size() 5885fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills >= (mBackgroundScanBuffer.capacity() 5895fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills * mLastScanSettings.reportPercentThreshold 5905fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills / 100) 5915fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills || mBackgroundScanBuffer.size() 5925fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills >= mLastScanSettings.reportNumScansThreshold))) { 59363539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills mBackgroundScanEventHandler 59463539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills .onScanStatus(WifiNative.WIFI_SCAN_RESULTS_AVAILABLE); 5955fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 5969ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 5979ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 5985fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mHotlistHandler != null) { 5995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills int event = mHotlistChangeBuffer.processScan(backgroundScanResults); 6005fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((event & ChangeBuffer.EVENT_FOUND) != 0) { 6015fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mHotlistHandler.onHotlistApFound( 6025fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mHotlistChangeBuffer.getLastResults(ChangeBuffer.EVENT_FOUND)); 6035fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 6045fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if ((event & ChangeBuffer.EVENT_LOST) != 0) { 6055fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mHotlistHandler.onHotlistApLost( 6065fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mHotlistChangeBuffer.getLastResults(ChangeBuffer.EVENT_LOST)); 6075fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 6089ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6095fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 6105fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 6115fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings.singleScanActive 6125fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills && mLastScanSettings.singleScanEventHandler != null) { 6135fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (mLastScanSettings.reportSingleScanFullResults) { 6145fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (ScanResult scanResult : singleScanResults) { 615c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills // ignore buckets scanned since there is only one bucket for a single scan 616c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills mLastScanSettings.singleScanEventHandler.onFullScanResult(scanResult, 617c9e6069eb941d282af213dc20b171877db6b567bMitchell Wills /* bucketsScanned */ 0); 6185fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 6199ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6202771787818003e53e8175036a3d09688c783f350Mitchell Wills Collections.sort(singleScanResults, SCAN_RESULT_SORT_COMPARATOR); 6215fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mLatestSingleScanResult = new WifiScanner.ScanData(mLastScanSettings.scanId, 0, 6225fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills singleScanResults.toArray(new ScanResult[singleScanResults.size()])); 62363539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills mLastScanSettings.singleScanEventHandler 62463539f1283899fbbf83ab90757961b4be51d5034Mitchell Wills .onScanStatus(WifiNative.WIFI_SCAN_RESULTS_AVAILABLE); 6259ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6265fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 62762bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius if (mLastScanSettings.hwPnoScanActive 628063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius && mLastScanSettings.pnoScanEventHandler != null) { 62962bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius ScanResult[] pnoScanResultsArray = new ScanResult[hwPnoScanResults.size()]; 630063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius for (int i = 0; i < pnoScanResultsArray.length; ++i) { 63162bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius pnoScanResultsArray[i] = hwPnoScanResults.get(i); 632063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 633063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius mLastScanSettings.pnoScanEventHandler.onPnoNetworkFound(pnoScanResultsArray); 634063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius } 635063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius 6365fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mLastScanSettings = null; 6379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6389ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 6409ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 6419ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 6429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public WifiScanner.ScanData[] getLatestBatchedScanResults(boolean flush) { 6435fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 6445fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills WifiScanner.ScanData[] results = mBackgroundScanBuffer.get(); 64541e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills if (flush) { 6465fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBackgroundScanBuffer.clear(); 64741e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills } 64841e38d84f562e12198f7db0d45f633712cae6cbaMitchell Wills return results; 6499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6509ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 6519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 6522332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius private boolean setNetworkPriorities(WifiNative.PnoNetwork[] networkList) { 6532332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius if (networkList != null) { 6542332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius if (DBG) Log.i(TAG, "Enable network and Set priorities for PNO."); 6552332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius for (WifiNative.PnoNetwork network : networkList) { 6562332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius if (!mWifiNative.setNetworkVariable(network.networkId, 6572332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius WifiConfiguration.priorityVarName, 6582332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius Integer.toString(network.priority))) { 6592332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius Log.e(TAG, "Set priority failed for: " + network.networkId); 6602332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return false; 6612332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 66262bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius if (!mWifiNative.enableNetworkWithoutConnect(network.networkId)) { 6632332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius Log.e(TAG, "Enable network failed for: " + network.networkId); 6642332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return false; 6652332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6662332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6672332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6682332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return true; 6692332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6702332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 67162bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius private boolean startHwPnoScan() { 672e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return mHwPnoDebouncer.startPnoScan(mHwPnoDebouncerListener); 6732332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6742332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 675e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private void stopHwPnoScan() { 676e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mHwPnoDebouncer.stopPnoScan(); 6772332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6782332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 679e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private void pauseHwPnoScan() { 680e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mHwPnoDebouncer.forceStopPnoScan(); 6812332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 6822332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 683dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius /** 684dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius * Hw Pno Scan is required only for disconnected PNO when the device supports it. 685dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius * @param isConnectedPno Whether this is connected PNO vs disconnected PNO. 686dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius * @return true if HW PNO scan is required, false otherwise. 687dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius */ 688dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius private boolean isHwPnoScanRequired(boolean isConnectedPno) { 689dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius return (!isConnectedPno & mHwPnoScanSupported); 690dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius } 691dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius 692dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius private boolean isHwPnoScanRequired() { 693dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius if (mPnoSettings == null) return false; 694dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius return isHwPnoScanRequired(mPnoSettings.isConnected); 695dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius } 696dcd877d6c143db557884993ea437e2a432cb0ba3Roshan Pius 6972332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius @Override 6986c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius public boolean setHwPnoList(WifiNative.PnoSettings settings, 6992332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius WifiNative.PnoEventHandler eventHandler) { 7002332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius synchronized (mSettingsLock) { 7012332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius if (mPnoSettings != null) { 7022332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius Log.w(TAG, "Already running a PNO scan"); 7032332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return false; 7042332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7052332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius mPnoEventHandler = eventHandler; 7062332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius mPnoSettings = settings; 7076c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius if (!setNetworkPriorities(settings.networkList)) return false; 7086c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius // For supplicant based PNO, we start the scan immediately when we set pno list. 7096c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius processPendingScans(); 7102332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return true; 7112332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7122332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7132332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 7142332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius @Override 715476172f2eef83ff367fae4344eda8129ea9d16f7Roshan Pius public boolean resetHwPnoList() { 7162332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius synchronized (mSettingsLock) { 7172332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius if (mPnoSettings == null) { 7182332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius Log.w(TAG, "No PNO scan running"); 7192332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius return false; 7202332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7212332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius mPnoEventHandler = null; 7222332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius mPnoSettings = null; 7236c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius // For supplicant based PNO, we stop the scan immediately when we reset pno list. 724e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius stopHwPnoScan(); 725e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return true; 7262332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7272332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7282332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 7292332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius @Override 7306c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius public boolean isHwPnoSupported(boolean isConnectedPno) { 7316c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius // Hw Pno Scan is supported only for disconnected PNO when the device supports it. 7326c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius return isHwPnoScanRequired(isConnectedPno); 7336c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius } 7346c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius 7356c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius @Override 7366c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius public boolean shouldScheduleBackgroundScanForHwPno() { 7376c5018cef1eb7acbcfa7fc6c9b7c018bab7ba7baRoshan Pius return false; 7382332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius } 7392332e9ea1b691fa0ea3a340feec159f2040aa6caRoshan Pius 7409ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 7419ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public boolean setHotlist(WifiScanner.HotlistSettings settings, 7429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills WifiNative.HotlistEventHandler eventHandler) { 7439ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (settings == null || eventHandler == null) { 7449ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return false; 7459ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7465fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 7479ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mHotlistHandler = eventHandler; 7489ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mHotlistChangeBuffer.setSettings(settings.bssidInfos, settings.apLostThreshold, 1); 7499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return true; 7509ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7529ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 7539ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills @Override 7549ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void resetHotlist() { 7555fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills synchronized (mSettingsLock) { 7569ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mHotlistChangeBuffer.clearSettings(); 7579ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mHotlistHandler = null; 7589ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7599ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7609ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 76194bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills /* 76294bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills * Significant Wifi Change API is not implemented 76394bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills */ 76494bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills @Override 76594bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills public boolean trackSignificantWifiChange(WifiScanner.WifiChangeSettings settings, 76694bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills WifiNative.SignificantWifiChangeEventHandler handler) { 76794bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills return false; 76894bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills } 76994bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills @Override 77094bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills public void untrackSignificantWifiChange() {} 77194bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills 77294bd575cb4766ed0dfbaad0fc7719a9e9e85a260Mitchell Wills 7739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static class LastScanSettings { 7745fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public long startTime; 7755fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 7765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public LastScanSettings(long startTime) { 7775fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills this.startTime = startTime; 7785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 7795fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 7805fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // Background settings 7815fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public boolean backgroundScanActive = false; 7825fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int scanId; 7835fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int maxAps; 7845fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int reportEvents; 7855fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int reportNumScansThreshold; 7865fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int reportPercentThreshold; 7875fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 7885fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public void setBackgroundScan(int scanId, int maxAps, int reportEvents, 7899ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills int reportNumScansThreshold, int reportPercentThreshold) { 7905fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills this.backgroundScanActive = true; 7919ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills this.scanId = scanId; 7929ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills this.maxAps = maxAps; 7939ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills this.reportEvents = reportEvents; 7949ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills this.reportNumScansThreshold = reportNumScansThreshold; 7959ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills this.reportPercentThreshold = reportPercentThreshold; 7969ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 7975fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 7985fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills // Single scan settings 7995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public boolean singleScanActive = false; 8005fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public boolean reportSingleScanFullResults; 8017e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills public ChannelCollection singleScanFreqs; 8025fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public WifiNative.ScanEventHandler singleScanEventHandler; 8035fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills 8045fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public void setSingleScan(boolean reportSingleScanFullResults, 8057e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills ChannelCollection singleScanFreqs, 8067e3e85327ca82a83de84b4750e793f2e3d1b3bfcMitchell Wills WifiNative.ScanEventHandler singleScanEventHandler) { 8075fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills singleScanActive = true; 8085fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills this.reportSingleScanFullResults = reportSingleScanFullResults; 8095fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills this.singleScanFreqs = singleScanFreqs; 8105fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills this.singleScanEventHandler = singleScanEventHandler; 8115fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } 812063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius 81362bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius public boolean hwPnoScanActive = false; 814063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius public WifiNative.PnoEventHandler pnoScanEventHandler; 815063cfc7e3eef78fcbda24a66f0c473828b39c854Roshan Pius 81662bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius public void setHwPnoScan(WifiNative.PnoEventHandler pnoScanEventHandler) { 81762bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius hwPnoScanActive = true; 81862bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius this.pnoScanEventHandler = pnoScanEventHandler; 81962bc101940ae1f5e60c4d8861a149b900dbf5e5cRoshan Pius } 8209ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8219ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8229ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8239ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static class ScanBuffer { 8249ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private final ArrayDeque<WifiScanner.ScanData> mBuffer; 8255fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private int mCapacity; 8269ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8279ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public ScanBuffer(int capacity) { 8285fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mCapacity = capacity; 8295fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills mBuffer = new ArrayDeque<>(mCapacity); 8309ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8319ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8329ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public int size() { 8339ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return mBuffer.size(); 8349ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8359ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public int capacity() { 8375fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return mCapacity; 8389ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8409ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public boolean isFull() { 8415fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return size() == mCapacity; 8429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8439ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8449ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void add(WifiScanner.ScanData scanData) { 8459ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (isFull()) { 8469ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mBuffer.pollFirst(); 8479ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8489ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mBuffer.offerLast(scanData); 8499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8509ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void clear() { 8529ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mBuffer.clear(); 8539ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8549ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8559ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public WifiScanner.ScanData[] get() { 8569ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return mBuffer.toArray(new WifiScanner.ScanData[mBuffer.size()]); 8579ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8589ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8599ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8609ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private static class ChangeBuffer { 8619ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public static int EVENT_NONE = 0; 8629ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public static int EVENT_LOST = 1; 8639ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public static int EVENT_FOUND = 2; 8649ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8655fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public static int STATE_FOUND = 0; 8669ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8679ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private WifiScanner.BssidInfo[] mBssidInfos = null; 8689ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private int mApLostThreshold; 8699ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private int mMinEvents; 8709ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private int[] mLostCount = null; 8719ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private ScanResult[] mMostRecentResult = null; 8729ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private int[] mPendingEvent = null; 8739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills private boolean mFiredEvents = false; 8749ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8755fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills private static ScanResult findResult(List<ScanResult> results, String bssid) { 8765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills for (int i = 0; i < results.size(); ++i) { 8775fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (bssid.equalsIgnoreCase(results.get(i).BSSID)) { 8785fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills return results.get(i); 8799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8809ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8819ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return null; 8829ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8839ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 8849ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void setSettings(WifiScanner.BssidInfo[] bssidInfos, int apLostThreshold, 8859ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills int minEvents) { 8869ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mBssidInfos = bssidInfos; 8879ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (apLostThreshold <= 0) { 8889ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mApLostThreshold = 1; 8895fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 8909ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mApLostThreshold = apLostThreshold; 8919ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 8929ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mMinEvents = minEvents; 8939ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (bssidInfos != null) { 8949ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mLostCount = new int[bssidInfos.length]; 8959ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills Arrays.fill(mLostCount, mApLostThreshold); // default to lost 8969ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mMostRecentResult = new ScanResult[bssidInfos.length]; 8979ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent = new int[bssidInfos.length]; 8989ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mFiredEvents = false; 8995fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 9009ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mLostCount = null; 9019ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mMostRecentResult = null; 9029ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent = null; 9039ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9049ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9059ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9069ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public void clearSettings() { 9079ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills setSettings(null, 0, 0); 9089ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9099ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9109ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills /** 9119ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * Get the most recent scan results for APs that triggered the given event on the last call 9129ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * to {@link #processScan}. 9139ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills */ 9149ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills public ScanResult[] getLastResults(int event) { 9159ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills ArrayList<ScanResult> results = new ArrayList<>(); 9169ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills for (int i = 0; i < mLostCount.length; ++i) { 9179ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mPendingEvent[i] == event) { 9189ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills results.add(mMostRecentResult[i]); 9199ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9209ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9219ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return results.toArray(new ScanResult[results.size()]); 9229ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9239ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9249ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills /** 9259ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * Process the supplied scan results and determine if any events should be generated based 9269ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * on the configured settings 9279ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills * @return The events that occurred 9289ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills */ 9295fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills public int processScan(List<ScanResult> scanResults) { 9309ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mBssidInfos == null) { 9319ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return EVENT_NONE; 9329ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9339ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9349ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills // clear events from last time 9359ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mFiredEvents) { 9369ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mFiredEvents = false; 9379ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills for (int i = 0; i < mLostCount.length; ++i) { 9389ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent[i] = EVENT_NONE; 9399ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9409ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9419ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9429ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills int eventCount = 0; 9439ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills int eventType = EVENT_NONE; 9449ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills for (int i = 0; i < mLostCount.length; ++i) { 9459ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills ScanResult result = findResult(scanResults, mBssidInfos[i].bssid); 9469ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills int rssi = Integer.MIN_VALUE; 9479ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (result != null) { 9489ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mMostRecentResult[i] = result; 9499ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills rssi = result.level; 9509ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9519ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9529ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (rssi < mBssidInfos[i].low) { 9539ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mLostCount[i] < mApLostThreshold) { 9549ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mLostCount[i]++; 9559ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills 9569ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mLostCount[i] >= mApLostThreshold) { 9579ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mPendingEvent[i] == EVENT_FOUND) { 9589ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent[i] = EVENT_NONE; 9595fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 9609ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent[i] = EVENT_LOST; 9619ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9629ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9639ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9645fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 9659ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mLostCount[i] >= mApLostThreshold) { 9669ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mPendingEvent[i] == EVENT_LOST) { 9679ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent[i] = EVENT_NONE; 9685fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills } else { 9699ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mPendingEvent[i] = EVENT_FOUND; 9709ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9719ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9729ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mLostCount[i] = STATE_FOUND; 9739ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9749ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (DBG) { 9755fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills Log.d(TAG, "ChangeBuffer BSSID: " + mBssidInfos[i].bssid + "=" + mLostCount[i] 9765fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills + ", " + mPendingEvent[i] + ", rssi=" + rssi); 9779ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9789ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (mPendingEvent[i] != EVENT_NONE) { 9799ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills ++eventCount; 9809ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills eventType |= mPendingEvent[i]; 9819ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9829ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9835fa6221c4e507cbc596b6de77d793ec08d690157Mitchell Wills if (DBG) Log.d(TAG, "ChangeBuffer events count=" + eventCount + ": " + eventType); 9849ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills if (eventCount >= mMinEvents) { 9859ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills mFiredEvents = true; 9869ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return eventType; 9879ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9889ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills return EVENT_NONE; 9899ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 9909ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills } 991e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 992e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 993e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * HW PNO Debouncer is used to debounce PNO requests. This guards against toggling the PNO 994e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * state too often which is not handled very well by some drivers. 995e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Note: This is not thread safe! 996e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 997e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public static class HwPnoDebouncer { 998e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public static final String PNO_DEBOUNCER_ALARM_TAG = TAG + "Pno Monitor"; 999e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private static final int MINIMUM_PNO_GAP_MS = 5 * 1000; 1000e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1001e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final WifiNative mWifiNative; 1002e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final AlarmManager mAlarmManager; 1003e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final Handler mEventHandler; 1004e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private long mLastPnoChangeTimeStamp = -1L; 1005e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private boolean mExpectedPnoState = false; 1006e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private boolean mCurrentPnoState = false;; 1007e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private boolean mWaitForTimer = false; 1008e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private Listener mListener; 1009e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1010e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1011e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Interface used to indicate PNO scan notifications. 1012e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1013e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public interface Listener { 1014e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1015e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Used to indicate a delayed PNO scan request failure. 1016e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1017e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius void onPnoScanFailed(); 1018e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1019e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1020e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public HwPnoDebouncer(WifiNative wifiNative, AlarmManager alarmManager, 1021e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius Handler eventHandler) { 1022e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mWifiNative = wifiNative; 1023e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mAlarmManager = alarmManager; 1024e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mEventHandler = eventHandler; 1025e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1026e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1027e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1028e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Enable/Disable PNO state in wpa_supplicant 1029e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * @param enable boolean indicating whether PNO is being enabled or disabled. 1030e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1031e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private boolean updatePnoState(boolean enable) { 1032e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mCurrentPnoState == enable) { 1033e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (DBG) Log.d(TAG, "PNO state is already " + enable); 1034e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return true; 1035e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1036e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius Log.d(TAG, "Change PNO state from " + mCurrentPnoState + " to " + enable); 1037e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1038e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mLastPnoChangeTimeStamp = System.currentTimeMillis(); 1039e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mWifiNative.setPnoScan(enable)) { 1040e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mCurrentPnoState = enable; 1041e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return true; 1042e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } else { 1043e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius Log.e(TAG, "PNO state change to " + enable + " failed"); 1044e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return false; 1045e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1046e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1047e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1048e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private final AlarmManager.OnAlarmListener mAlarmListener = 1049e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius new AlarmManager.OnAlarmListener() { 1050e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public void onAlarm() { 1051e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (DBG) Log.d(TAG, "PNO timer expired, expected state " + mExpectedPnoState); 1052e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (!updatePnoState(mExpectedPnoState)) { 1053e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mListener != null) { 1054e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mListener.onPnoScanFailed(); 1055e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1056e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1057e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mWaitForTimer = false; 1058e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1059e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius }; 1060e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1061e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1062e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Enable/Disable PNO state. This method will debounce PNO scan requests. 1063e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * @param enable boolean indicating whether PNO is being enabled or disabled. 1064e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1065e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius private boolean setPnoState(boolean enable) { 1066e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius boolean isSuccess = true; 1067e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mExpectedPnoState = enable; 1068e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (!mWaitForTimer) { 1069e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius long timeDifference = System.currentTimeMillis() - mLastPnoChangeTimeStamp; 1070e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (timeDifference >= MINIMUM_PNO_GAP_MS) { 1071e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius isSuccess = updatePnoState(enable); 1072e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } else { 1073e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius long alarmTimeout = MINIMUM_PNO_GAP_MS - timeDifference; 1074e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius Log.d(TAG, "Start PNO timer with delay " + alarmTimeout); 1075e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1076e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius System.currentTimeMillis() + alarmTimeout, PNO_DEBOUNCER_ALARM_TAG, 1077e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mAlarmListener, mEventHandler); 1078e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mWaitForTimer = true; 1079e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1080e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1081e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return isSuccess; 1082e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1083e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1084e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1085e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Start PNO scan 1086e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1087e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public boolean startPnoScan(Listener listener) { 1088e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (DBG) Log.d(TAG, "Starting PNO scan"); 1089e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mListener = listener; 1090e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (!setPnoState(true)) { 1091e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mListener = null; 1092e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return false; 1093e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1094e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius return true; 1095e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1096e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1097e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1098e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Stop PNO scan 1099e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1100e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public void stopPnoScan() { 1101e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (DBG) Log.d(TAG, "Stopping PNO scan"); 1102e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius setPnoState(false); 1103e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mListener = null; 1104e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1105e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius 1106e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius /** 1107e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * Force stop PNO scanning. This method will bypass the debounce logic and stop PNO 1108e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius * scan immediately. 1109e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius */ 1110e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius public void forceStopPnoScan() { 1111e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mCurrentPnoState) { 1112e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (DBG) Log.d(TAG, "Force stopping Pno scan"); 1113e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius // Cancel the debounce timer and stop PNO scan. 1114e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius if (mWaitForTimer) { 1115e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mAlarmManager.cancel(mAlarmListener); 1116e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius mWaitForTimer = false; 1117e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1118e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius updatePnoState(false); 1119e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1120e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 1121e7ba2963bedf426a1d8ba09ab535260ef364512bRoshan Pius } 11229ec71f6499e0e3d6f52310a41ff4a59d2fa4f8b2Mitchell Wills} 1123