WifiAutoJoinController.java revision 16fdf07021858fd116d96a5fb00ddb3c166d5ae6
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * Copyright (C) 2014 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 220c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 23c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.net.wifi.*; 248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidsonimport android.net.wifi.WifiConfiguration.KeyMgmt; 2516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidsonimport android.os.SystemClock; 2616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidsonimport android.provider.Settings; 27c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 28f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 300c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 31f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 52ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 53ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 56c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 57833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle public static int mScanResultAutoJoinAge = 5000; /* milliseconds unit */ 58c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 59453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 64c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 65c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 668639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** Whether to allow connections to untrusted networks. */ 678639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean mAllowUntrustedConnections = false; 688639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 69c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle /* for debug purpose only : the untrusted SSID we would be connected to if we had VPN */ 70c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle String lastUntrustedBSSID = null; 71c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 72c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 73c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 74c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 75931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 764dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 77931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 7927355a942653264388e909a4276196ee63e57811vandwalle 8016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson /** @see android.provider.Settings.Global#WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS */ 8116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson private static final long DEFAULT_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS = 1000 * 60; // 1 minute 8216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 83b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 84b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 85b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 86b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 87b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 8897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 8997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 901ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // Below are AutoJoin wide parameters indicating if we should be aggressive before joining 911ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // weak network. Note that we cannot join weak network that are going to be marked as unanted by 921ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // ConnectivityService because this will trigger link flapping. 931ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 941ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * There was a non-blacklisted configuration that we bailed from because of a weak signal 951ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 961ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle boolean didBailDueToWeakRssi = false; 971ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 981ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * number of time we consecutively bailed out of an eligible network because its signal 991ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * was too weak 1001ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 1011ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int weakRssiBailCount = 0; 1021ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 104c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 105f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 110c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 11121bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 11221bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 117f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 122f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 125f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 127ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 128ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 129abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 130ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 131ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 132abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 133ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 134ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 135ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 136ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 137931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 138931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 139ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 140931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 143931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 145b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 162be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int addToScanCache(List<ScanResult> scanList) { 163be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 164be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 1657b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle boolean didAssociate = false; 1668242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle long now = System.currentTimeMillis(); 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1680c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1690c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 170f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 1711fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 172c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 173c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 174f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 175f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 176c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Fetch the previous instance for this result 177f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 178f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 1798ccabb81ad304b80dc8eaa162fd322643461529bvandwalle if (mWifiConfigStore.scanResultRssiLevelPatchUp != 0 1808ccabb81ad304b80dc8eaa162fd322643461529bvandwalle && result.level == 0 1818ccabb81ad304b80dc8eaa162fd322643461529bvandwalle && sr.level < -20) { 1828ccabb81ad304b80dc8eaa162fd322643461529bvandwalle // A 'zero' RSSI reading is most likely a chip problem which returns 1838ccabb81ad304b80dc8eaa162fd322643461529bvandwalle // an unknown RSSI, hence ignore it 1848ccabb81ad304b80dc8eaa162fd322643461529bvandwalle result.level = sr.level; 1858ccabb81ad304b80dc8eaa162fd322643461529bvandwalle } 1868ccabb81ad304b80dc8eaa162fd322643461529bvandwalle 187931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If there was a previous cache result for this BSSID, average the RSSI values 188c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 189f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 190c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remove the previous Scan Result - this is not necessary 191f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 1928ccabb81ad304b80dc8eaa162fd322643461529bvandwalle } else if (mWifiConfigStore.scanResultRssiLevelPatchUp != 0 && result.level == 0) { 1938ccabb81ad304b80dc8eaa162fd322643461529bvandwalle // A 'zero' RSSI reading is most likely a chip problem which returns 1948ccabb81ad304b80dc8eaa162fd322643461529bvandwalle // an unknown RSSI, hence initialize it to a sane value 1958ccabb81ad304b80dc8eaa162fd322643461529bvandwalle result.level = mWifiConfigStore.scanResultRssiLevelPatchUp; 196e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 197e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 198e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 199e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle WifiKey wkey; 200e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle // Quoted SSIDs are the only one valid at this stage 201e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle try { 202e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 203e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } catch (IllegalArgumentException e) { 204e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 205e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle "] ->skipping this network"); 206e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = null; 207e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 208e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (wkey != null) { 209e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle NetworkKey nkey = new NetworkKey(wkey); 210e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle //if we don't know this scan result then request a score from the scorer 211e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle unknownScanResults.add(nkey); 212e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 213e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 2147b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2157b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2167b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 217e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2187b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is not scored"); 219e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 2200c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 221e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 2227b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2237b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2247b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 225e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 226e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2277b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is scored : " + score); 2280c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 229f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 230f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 231e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // scanResultCache.put(result.BSSID, new ScanResult(result)); 232e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle scanResultCache.put(result.BSSID, result); 233be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 2347b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = mWifiConfigStore.updateSavedNetworkHistory(result); 235f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 236be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 2377b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (!didAssociate) { 238be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 239c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 240c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 241f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 2421fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (associatedConfig != null && associatedConfig.SSID != null) { 243f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 244f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 2458242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + associatedConfig.SSID + " with " + result.SSID 2468242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + " status " + associatedConfig.autoJoinStatus 2478242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + " reason " + associatedConfig.disableReason 2488242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + " tsp " + associatedConfig.blackListTimestamp 2498242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + " was " + (now - associatedConfig.blackListTimestamp)); 250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 251be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle mWifiStateMachine.sendMessage( 252be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiStateMachine.CMD_AUTO_SAVE_NETWORK, associatedConfig); 2537b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = true; 254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2550d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2560d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2570d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2580d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2590d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2617b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (didAssociate) { 262be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 263a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate ++; 264a0708b09ad17b086c008ab100aec7143d7613c80vandwalle } else { 265a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate = 0; 266be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2680c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2690c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2700c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2710c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 272931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2730c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2740c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 275be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 278f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2790888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 280ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 281ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 282ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 283ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 2842f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message + " stack:" 285ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 286ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 287ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 288ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 289ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 2902f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message); 291ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 292f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 294931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 295be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 296be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 297e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle List<ScanResult> scanList = mWifiStateMachine.getScanResultsListNoCopyUnsync(); 298be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 300be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 301be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 3022f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " known=" + numScanResultsKnown + " " 3039f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + doAutoJoin); 304be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 3057806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 3067806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 3077806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 308005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 309be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 310f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 311f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 313931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 314931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 316f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 320f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 321f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 324f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 325f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 326f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 327005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 328f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 329f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 330931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 331931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * network link quality changed, called directly from WifiTrafficPoller, 332931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 333931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 334f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 335f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 336f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 337f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 338931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 339f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 340f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 342f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 343b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 344b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 345931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 346e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle private int compareNetwork(WifiConfiguration candidate, 347e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String lastSelectedConfiguration) { 348b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 349b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 350b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 351f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 352b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 353c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 354c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 355b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return 1000; 356b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 357f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 358f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 359b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 360f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 361f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 362b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 363e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("compareNetwork will compare " + candidate.configKey() 364e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " with current " + currentNetwork.configKey()); 365b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 366833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int order = compareWifiConfigurations(currentNetwork, candidate); 367e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 368e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 369e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 370e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // enableNetwork with disableOthers=true WifiManager API 371e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // As this is a direct user choice, we strongly prefer this configuration, 372e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // hence give +/-100 373e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if ((lastSelectedConfiguration != null) 374e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && currentNetwork.configKey().equals(lastSelectedConfiguration)) { 375e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // currentNetwork is the last selected configuration, 376e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 377e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 378e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by reducing order by -100 379e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order - 100; 380e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 381e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers -100 " + currentNetwork.configKey() 382e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + candidate.configKey() 383e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 384e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 385e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 386e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } else if ((lastSelectedConfiguration != null) 387e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 388e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // candidate is the last selected configuration, 389e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 390e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 391e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by increasing order by +100 392e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order + 100; 393e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 394e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers +100 " + candidate.configKey() 395e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + currentNetwork.configKey() 396e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 397e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 398e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 399e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 400e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 401ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 403f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 404ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 405ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 406ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 407ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 408ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 409ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 41062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 411ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 412ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 413ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 414931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 41562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 418c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 422e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 423c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 424c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 425e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 426e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 427e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 42862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 429931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 43062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 43127355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 43262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 433e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle selected.dirty = true; 43462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 436992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 437f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 438ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 439f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 440992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 441992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 442f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 443ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 444992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 445992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 446f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 447f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 448f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 449ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 450ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 4512451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 452c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 4539f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 4549f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 4559f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 4569f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 4579f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 4589f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 4599f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 4609f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 46162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 46262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 463c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 464c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 46562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 46662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 467992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 468992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 469992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 470992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 47262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 473ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 47462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 47562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 476f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4772451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare RSSI values so as to evaluate the strength of the user preference 4782451dbcc4f9641df188326215b204b798eb70c46vandwalle int order = compareWifiConfigurationsRSSI(config, selected, null); 4792451dbcc4f9641df188326215b204b798eb70c46vandwalle 4802451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order < -30) { 4812451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is worse than the visible configuration 4822451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a strong choice so as autojoin cannot override this 4832451dbcc4f9641df188326215b204b798eb70c46vandwalle // for instance, the user has select a network 4842451dbcc4f9641df188326215b204b798eb70c46vandwalle // with 1 bar over a network with 3 bars... 4852451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 60; 4862451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -20) { 4872451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 50; 4882451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -10) { 4892451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 40; 4902f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else if (order < 20) { 4912451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is about same or has a slightly better RSSI 4922451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a weaker choice, here a difference of at least +/-30 in 4932451dbcc4f9641df188326215b204b798eb70c46vandwalle // RSSI comparison triggered by autoJoin will override the choice 4942451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 30; 4952f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else { 4962451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is better than the visible configuration 4972451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence we do not know if the user prefers this configuration strongly 4982451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; 49962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 500f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 501931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 502931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 503931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 504ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 505ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 506ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 507ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 508ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 509ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 5100888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 5112451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 512cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 5132451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer currentChoice = selected.connectChoices.get(config.configKey(true)); 5142f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (currentChoice != null) { 5152f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // User has made this choice multiple time in a row, so bump up a lot 5162f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle choice += currentChoice.intValue(); 5172451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5182f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Add the visible config to the selected's connect choice list 5192f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle selected.connectChoices.put(config.configKey(true), choice); 520f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 522ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 523ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 52462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 525ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 526931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 52762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 5280888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 5290888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 530931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected's linked configuration from the 531931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // recently seen config's connectChoice list 5320888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 5330888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 5340888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 5350888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 53662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 537ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 538ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 5392451dbcc4f9641df188326215b204b798eb70c46vandwalle // We haven't found the configuration that the user just selected in our 5402451dbcc4f9641df188326215b204b798eb70c46vandwalle // scan cache. 5412451dbcc4f9641df188326215b204b798eb70c46vandwalle // In that case we will need a new scan before attempting to connect to this 5422451dbcc4f9641df188326215b204b798eb70c46vandwalle // configuration anyhow and thus we can process the scan results then. 543ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 544ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 54562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 546f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 54762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 54862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 549ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 55062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 55162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 553f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 554992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 555931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 556992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 557005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiConfigStore.writeKnownNetworkHistory(false); 558992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5612451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 5622451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 5632451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 5642451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 565f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 566f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5672451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 5682451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 5692451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 571f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 572f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 573f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 574f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5752451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 576f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 577f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 578f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5792451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5802451dbcc4f9641df188326215b204b798eb70c46vandwalle 5812451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 5822451dbcc4f9641df188326215b204b798eb70c46vandwalle //We didn't find the connect choice 5832451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 5842451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5852451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice.intValue() < 0) { 5862451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; // Compatibility with older files 5872451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5882451dbcc4f9641df188326215b204b798eb70c46vandwalle return choice.intValue(); 5892451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5902451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5912451dbcc4f9641df188326215b204b798eb70c46vandwalle 592815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int compareWifiConfigurationsFromVisibility(WifiConfiguration a, int aRssiBoost, 593815788ba7838fc54310baed3deb9b95548e0ce69vandwalle WifiConfiguration b, int bRssiBoost) { 5942451dbcc4f9641df188326215b204b798eb70c46vandwalle 595815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int aRssiBoost5 = 0; // 5GHz RSSI boost to apply for purpose band selection (5GHz pref) 596815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int bRssiBoost5 = 0; // 5GHz RSSI boost to apply for purpose band selection (5GHz pref) 597815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 598815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int aScore = 0; 599815788ba7838fc54310baed3deb9b95548e0ce69vandwalle int bScore = 0; 600815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 601815788ba7838fc54310baed3deb9b95548e0ce69vandwalle boolean aPrefers5GHz = false; 602815788ba7838fc54310baed3deb9b95548e0ce69vandwalle boolean bPrefers5GHz = false; 6034dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6042451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 605815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * Calculate a boost to apply to RSSI value of configuration we want to join on 5GHz: 606815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold, 607815788ba7838fc54310baed3deb9b95548e0ce69vandwalle * penalize the RSSI value of 5GHz band iff the base value is lower than threshold 6082451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 6092451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 6102451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 611815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.visibility.rssi5, a.configKey() + "->"); 612815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.visibility.rssi5, b.configKey() + "->"); 6132451dbcc4f9641df188326215b204b798eb70c46vandwalle 614815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Select which band to use for a 615815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (a.visibility.rssi5 + aRssiBoost5 > b.visibility.rssi24) { 6162451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 617815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aPrefers5GHz = true; 618815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 619815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 620815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Select which band to use for b 621815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (b.visibility.rssi5 + bRssiBoost5 > b.visibility.rssi24) { 622815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Prefer b's 5GHz 623815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bPrefers5GHz = true; 624815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 625815788ba7838fc54310baed3deb9b95548e0ce69vandwalle 626815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (aPrefers5GHz) { 627815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (bPrefers5GHz) { 628815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If both a and b are on 5GHz then we don't apply the 5GHz RSSI boost to either 629815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // one, but directly compare the RSSI values, this improves stability, 630815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // since the 5GHz RSSI boost can introduce large fluctuations 631815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aScore = a.visibility.rssi5 + aRssiBoost; 632815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 633815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If only a is on 5GHz, then apply the 5GHz preference boost to a 634815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aScore = a.visibility.rssi5 + aRssiBoost + aRssiBoost5; 635815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 6362451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 637815788ba7838fc54310baed3deb9b95548e0ce69vandwalle aScore = a.visibility.rssi24 + aRssiBoost; 638f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6392451dbcc4f9641df188326215b204b798eb70c46vandwalle 640815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (bPrefers5GHz) { 641815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (aPrefers5GHz) { 642815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If both a and b are on 5GHz then we don't apply the 5GHz RSSI boost to either 643815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // one, but directly compare the RSSI values, this improves stability, 644815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // since the 5GHz RSSI boost can introduce large fluctuations 645815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bScore = b.visibility.rssi5 + bRssiBoost; 646815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 647815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If only b is on 5GHz, then apply the 5GHz preference boost to b 648815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bScore = b.visibility.rssi5 + bRssiBoost + bRssiBoost5; 649815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 650815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } else { 651815788ba7838fc54310baed3deb9b95548e0ce69vandwalle bScore = b.visibility.rssi24 + bRssiBoost; 652815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 653815788ba7838fc54310baed3deb9b95548e0ce69vandwalle if (VDBG) { 654815788ba7838fc54310baed3deb9b95548e0ce69vandwalle logDbg(" " + a.configKey() + " is5=" + aPrefers5GHz + " score=" + aScore 655815788ba7838fc54310baed3deb9b95548e0ce69vandwalle + b.configKey() + " is5=" + bPrefers5GHz + " score=" + bScore); 656815788ba7838fc54310baed3deb9b95548e0ce69vandwalle } 657815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // Compare a and b 658815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If a score is higher then a > b and the order is descending (negative) 659815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // If b score is higher then a < b and the order is ascending (positive) 660815788ba7838fc54310baed3deb9b95548e0ce69vandwalle return bScore - aScore; 661f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 662f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6632451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 6642451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 6652451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 6662451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 6672451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 6682451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 6692451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 6702451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 6712451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 672f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 6732451dbcc4f9641df188326215b204b798eb70c46vandwalle 6742451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 6752451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6762451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6772451dbcc4f9641df188326215b204b798eb70c46vandwalle 6782451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA; 6792451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreB; 6802451dbcc4f9641df188326215b204b798eb70c46vandwalle 6812451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 682f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 683f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 684f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 6852451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 686b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6892451dbcc4f9641df188326215b204b798eb70c46vandwalle 6902451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 6912451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 6922451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 69393a1fddee50a244d31036cddae6b7db6630fd93dvandwalle aRssiBoost = mWifiConfigStore.currentNetworkBoost; 6942451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 69593a1fddee50a244d31036cddae6b7db6630fd93dvandwalle bRssiBoost = mWifiConfigStore.currentNetworkBoost; 6962451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6972451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6982451dbcc4f9641df188326215b204b798eb70c46vandwalle 6992451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 700b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 701c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + Integer.toString(astatus.rssi24) 702c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + "," + Integer.toString(astatus.rssi5) 7032451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(aRssiBoost) 704c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + b.configKey() + " " 705c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi24) + "," 706c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi5) 7072451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(bRssiBoost) 7082451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 709f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7102451dbcc4f9641df188326215b204b798eb70c46vandwalle 711815788ba7838fc54310baed3deb9b95548e0ce69vandwalle order = compareWifiConfigurationsFromVisibility(a, aRssiBoost, b, bRssiBoost); 7122451dbcc4f9641df188326215b204b798eb70c46vandwalle 7132451dbcc4f9641df188326215b204b798eb70c46vandwalle // Normalize the order to [-50, +50] 7142451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 50) order = 50; 7152451dbcc4f9641df188326215b204b798eb70c46vandwalle else if (order < -50) order = -50; 7162451dbcc4f9641df188326215b204b798eb70c46vandwalle 7172451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7182451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7192451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 7202451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 7212451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 7222451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle } 724b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7262451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7272451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7282451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 7292451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7302451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7312451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7322451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7332451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 7342451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 7352451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle 737f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 738f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 739f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 740833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle /** 741833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle * b/18490330 only use scorer for untrusted networks 742833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle * 7432451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 7442451dbcc4f9641df188326215b204b798eb70c46vandwalle 74581c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean aIsActive = false; 74681c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean bIsActive = false; 7472451dbcc4f9641df188326215b204b798eb70c46vandwalle 7482451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis : boost RSSI of current configuration before 7492451dbcc4f9641df188326215b204b798eb70c46vandwalle // looking up the score 7502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != mCurrentConfigurationKey) { 7512451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 75281c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson aIsActive = true; 7532451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 75481c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson bIsActive = true; 7552451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7562451dbcc4f9641df188326215b204b798eb70c46vandwalle } 757833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int scoreA = getConfigNetworkScore(a, mScanResultAutoJoinAge, aIsActive); 758833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int scoreB = getConfigNetworkScore(b, mScanResultAutoJoinAge, bIsActive); 7592451dbcc4f9641df188326215b204b798eb70c46vandwalle 7602451dbcc4f9641df188326215b204b798eb70c46vandwalle // Both configurations need to have a score for the scorer to be used 7612451dbcc4f9641df188326215b204b798eb70c46vandwalle // ...and the scores need to be different:-) 7622451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 7632451dbcc4f9641df188326215b204b798eb70c46vandwalle || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 764e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 765b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer no-scores: " 766e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + a.configKey() 767e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " " 768e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + b.configKey()); 769e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 7702451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 7712451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7722451dbcc4f9641df188326215b204b798eb70c46vandwalle 7732451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7742451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7752451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA < scoreB) { 7762451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; 7772451dbcc4f9641df188326215b204b798eb70c46vandwalle } if (scoreA > scoreB) { 7782451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; 7792451dbcc4f9641df188326215b204b798eb70c46vandwalle } 780b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 7812451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7822451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7832451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7842451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 785e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreA 7862451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7872451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7882451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7892451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7902451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 791e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreB 7922451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + Integer.toString(scoreB - scoreA)); 7932451dbcc4f9641df188326215b204b798eb70c46vandwalle } 794c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 7952451dbcc4f9641df188326215b204b798eb70c46vandwalle // If scoreA > scoreB, the comparison is descending hence the return value is negative 7962451dbcc4f9641df188326215b204b798eb70c46vandwalle return scoreB - scoreA; 7972451dbcc4f9641df188326215b204b798eb70c46vandwalle } 798833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle */ 7992451dbcc4f9641df188326215b204b798eb70c46vandwalle 800f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 801f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 802f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 803f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 804453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 805453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 806453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 8072451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 8082451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 809f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 811f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 812f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 813f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 814f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 815b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 816453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 817f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 818931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 819f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 820f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 821f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 822b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 823453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 824f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 825931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 826f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 827f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8282451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 8292451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 8302451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 831f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8322451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 8332451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 8342451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 8352451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 836f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8372451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 8382451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 839931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 8402451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 841f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 842b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 843453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 844b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 845b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 846f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 8472451dbcc4f9641df188326215b204b798eb70c46vandwalle } 8482451dbcc4f9641df188326215b204b798eb70c46vandwalle 8492451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 8502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 851931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8522451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 8534dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 854b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 855b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 856b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 857f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 858f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 859f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 860ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 861f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 862931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 863931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 864f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 865931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 8662451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 867b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 868453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 869f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 870f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 871f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 872f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 873931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8742451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 875b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 876453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 877f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 8782451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 879f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 880f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 881f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 882f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 883931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 884f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 885931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 886f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 887931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 888f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8892451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 890b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 891453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 892f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 893f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 894f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 895f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 896f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 897c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 898c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 899c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 900c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 901833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle /* 902c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 903c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 904c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 905c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 906c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 907b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 908b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 909b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 910b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 911c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 912c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 913c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 914c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 915c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 916c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 917c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 918c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 919c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 920c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 921c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 922c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 923c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 924c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 925833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle */ 926c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 9279f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 9280eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!mWifiConfigStore.enable5GHzPreference) { 9290eebae7334d6129f7ca1344e4b20199794994358vandwalle return 0; 9300eebae7334d6129f7ca1344e4b20199794994358vandwalle } 931e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 9320eebae7334d6129f7ca1344e4b20199794994358vandwalle > mWifiConfigStore.bandPreferenceBoostThreshold5) { 933e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 934e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 935e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 936e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 9370eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferenceBoostFactor5 9380eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferenceBoostThreshold5); 939e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 940815788ba7838fc54310baed3deb9b95548e0ce69vandwalle // 50 dB boost allows jumping from 2.4 to 5GHz 941e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 942e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 943e67ec726c07410073575473c0f50dc737629f5davandwalle } 9449f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 945b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " boost " + boost); 9469f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 947e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 948e67ec726c07410073575473c0f50dc737629f5davandwalle } 949e67ec726c07410073575473c0f50dc737629f5davandwalle 950e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 9510eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.bandPreferencePenaltyThreshold5) { 9520eebae7334d6129f7ca1344e4b20199794994358vandwalle // penalize if < -75 9530eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferencePenaltyFactor5 9540eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferencePenaltyThreshold5); 9550eebae7334d6129f7ca1344e4b20199794994358vandwalle return boost; 956e67ec726c07410073575473c0f50dc737629f5davandwalle } 957e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 958e67ec726c07410073575473c0f50dc737629f5davandwalle } 959c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /** 960e67ec726c07410073575473c0f50dc737629f5davandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 961e67ec726c07410073575473c0f50dc737629f5davandwalle * 962e67ec726c07410073575473c0f50dc737629f5davandwalle * Run thru all recent scan result of a WifiConfiguration and select the 963e67ec726c07410073575473c0f50dc737629f5davandwalle * best one. 964c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle */ 965e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 966e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 967b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 968b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 969b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 970b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 971e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9724dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 973b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.scanResultCache == null) { 974b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 975b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 976b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 977e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 979b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle if (current.scanResultCache.size() > 6) { 980b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 981c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 982c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + current.scanResultCache.size() + " --> bail"); 983b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 984931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 985c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 986e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9874dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 988b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 9892f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (current.BSSID != null && !current.BSSID.equals("any")) { 990b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 9912f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("attemptRoam() BSSID is set " 9922f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + current.BSSID + " -> bail"); 993b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 994e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9954dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9964dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 997931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 998c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 9992451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 10004dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 100197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle for (ScanResult b : current.scanResultCache.values()) { 100297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 100397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 100497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 100597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 1006931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if ((b.seen == 0) || (b.BSSID == null) 10070d616ef3bf635dff8722e064c0be842676390ed8vandwalle || ((nowMs - b.seen) > age) 1008e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.autoJoinStatus != ScanResult.ENABLED 1009e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.numIpConfigFailures > 8) { 10104dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 10113a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10124dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1013931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 10144dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 10154dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 10164dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 10174dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10184dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1019e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (b.numIpConfigFailures < (a.numIpConfigFailures - 1)) { 1020e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // Prefer a BSSID that doesn't have less number of Ip config failures 1021e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptRoam: " 1022e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + b.BSSID + " rssi=" + b.level + " ipfail=" +b.numIpConfigFailures 1023e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + b.frequency 1024e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " > " 1025e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + a.BSSID + " rssi=" + a.level + " ipfail=" +a.numIpConfigFailures 1026e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + a.frequency); 1027e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle a = b; 1028e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle continue; 1029e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1030e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 10312451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 10327806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 1033931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 10340eebae7334d6129f7ca1344e4b20199794994358vandwalle if (b.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 10350eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisLow; 1036c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 10370eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 1038c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10407806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 10410eebae7334d6129f7ca1344e4b20199794994358vandwalle if (a.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 1042931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 10430eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisLow; 1044c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 10450eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 1046c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10474dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10482451dbcc4f9641df188326215b204b798eb70c46vandwalle 104997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 10502451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 10512451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 105297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 105397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 105497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 105597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 10569f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 10579f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 10589f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 1059e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 10609f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 10614dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1062e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 10639f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 10644dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10654dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 10664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 1067c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 1068c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1069c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 1070c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10714dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 1072c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 107397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 107497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 1075c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 1076c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 1077c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 1078c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 10792451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 10802451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 1081c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1082931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 1083c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 10844dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10854dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10863a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 10873a2a3d226881cce8a4e511302231d843b0def303vandwalle if (VDBG) { 10887806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 1089e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 1090e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 10917806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 10927806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 10937806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 10947806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 10957806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 10963a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10974dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10983a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 10994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 11004dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1101931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 11022451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 11032451dbcc4f9641df188326215b204b798eb70c46vandwalle * 11042451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 11052451dbcc4f9641df188326215b204b798eb70c46vandwalle * 11062451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 11072451dbcc4f9641df188326215b204b798eb70c46vandwalle * 11082451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 11092451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 11102451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 111181c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int getConfigNetworkScore(WifiConfiguration config, int age, boolean isActive) { 11122451dbcc4f9641df188326215b204b798eb70c46vandwalle 11132451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 1114e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1115b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1116e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 1117e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 11181db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11191db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 11201db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (config.scanResultCache == null) { 1121e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1122b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1123e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 1124e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 11251db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11262451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11272451dbcc4f9641df188326215b204b798eb70c46vandwalle 11282451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 11292451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 11302451dbcc4f9641df188326215b204b798eb70c46vandwalle 11311db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 11321db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 11332451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 11341db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle for (ScanResult result : config.scanResultCache.values()) { 11352451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < age) { 113681c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int sc = mNetworkScoreCache.getNetworkScore(result, isActive); 11371db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 11381db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 11392451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11402451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11412451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11421db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 11431db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 11441db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1145e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1146e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1147b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1148e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1149e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1150b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 115181c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson + " isActive=" + isActive 1152e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1153e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1154e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1155e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 11561db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 11572451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11582451dbcc4f9641df188326215b204b798eb70c46vandwalle 11592451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 11608639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson * Set whether connections to untrusted connections are allowed. 11618639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson */ 11628639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson void setAllowUntrustedConnections(boolean allow) { 11638639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson boolean changed = mAllowUntrustedConnections != allow; 11648639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mAllowUntrustedConnections = allow; 11658639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (changed) { 1166005c1ef113192f898499a407dd266393a8d6b076vandwalle // Trigger a scan so as to reattempt autojoin 1167005c1ef113192f898499a407dd266393a8d6b076vandwalle mWifiStateMachine.startScanForUntrustedSettingChange(); 11688639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11698639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11708639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 11718639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean isOpenNetwork(ScanResult result) { 11728639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson return !result.capabilities.contains("WEP") && 11738639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("PSK") && 11748639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("EAP"); 11758639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11768639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 117716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson private boolean haveRecentlySeenScoredBssid(WifiConfiguration config) { 117816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson long ephemeralOutOfRangeTimeoutMs = Settings.Global.getLong( 117916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson mContext.getContentResolver(), 118016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson Settings.Global.WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS, 118116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson DEFAULT_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS); 118216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 118316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // Check whether the currently selected network has a score curve. If 118416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // ephemeralOutOfRangeTimeoutMs is <= 0, then this is all we check, and we stop here. 118516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // Otherwise, we stop here if the currently selected network has a score. If it doesn't, we 118616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // keep going - it could be that another BSSID is in range (has been seen recently) which 118716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // has a score, even if the one we're immediately connected to doesn't. 118816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson ScanResult currentScanResult = mWifiStateMachine.getCurrentScanResult(); 118916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson boolean currentNetworkHasScoreCurve = mNetworkScoreCache.hasScoreCurve(currentScanResult); 119016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (ephemeralOutOfRangeTimeoutMs <= 0 || currentNetworkHasScoreCurve) { 119116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 119216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (currentNetworkHasScoreCurve) { 119316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Current network has a score curve, keeping network: " 119416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson + currentScanResult); 119516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } else { 119616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Current network has no score curve, giving up: " + config.SSID); 119716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 119816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 119916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return currentNetworkHasScoreCurve; 120016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 120116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 120216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (config.scanResultCache == null || config.scanResultCache.isEmpty()) { 120316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return false; 120416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 120516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 120616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson long currentTimeMs = System.currentTimeMillis(); 120716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson for (ScanResult result : config.scanResultCache.values()) { 120816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (currentTimeMs > result.seen 120916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson && currentTimeMs - result.seen < ephemeralOutOfRangeTimeoutMs 121016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson && mNetworkScoreCache.hasScoreCurve(result)) { 121116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 121216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("Found scored BSSID, keeping network: " + result.BSSID); 121316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 121416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return true; 121516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 121616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 121716fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 121816fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson if (DBG) { 121916fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson logDbg("No recently scored BSSID found, giving up connection: " + config.SSID); 122016fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 122116fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson return false; 122216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson } 122316fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson 12248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** 1225931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 122668fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle * Return false if no acceptable networks were found. 1227931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 122868fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean attemptAutoJoin() { 122968fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle boolean found = false; 1230c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 12311ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = false; 1232b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 12334dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 12348242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle long now = System.currentTimeMillis(); 12358242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle 12368c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 12378c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1238931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1239453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1240453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1241453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1242453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1243f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1244f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1245931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 1246833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle List<WifiConfiguration> list = 1247833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle mWifiConfigStore.getRecentConfiguredNetworks(mScanResultAutoJoinAge, false); 1248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 12492f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) logDbg("attemptAutoJoin nothing known=" + 12502f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle mWifiConfigStore.getconfiguredNetworkSize()); 125168fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1252f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1253f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1254931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 125599d385e3b4d34841d6efcfd7cc9bf1d5ae25de14vandwalle String val = mWifiNative.status(true); 1256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 1257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 1259f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 1260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1261f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1262b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int supplicantNetId = -1; 1263f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 1264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 1265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 1266b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId = 0; 1267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 1268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 1269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 1271b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId *= 10; 1272b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId += c - 0x30; 1273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 1274f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 1276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 127856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } else if (key.contains("wpa_state=ASSOCIATING") 127956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=ASSOCIATED") 128056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=FOUR_WAY_HANDSHAKE") 128156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=GROUP_KEY_HANDSHAKE")) { 128256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle if (DBG) { 128356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle logDbg("attemptAutoJoin: bail out due to sup state " + key); 128456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } 128556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // After WifiStateMachine ask the supplicant to associate or reconnect 128656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // we might still obtain scan results from supplicant 128756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // however the supplicant state in the mWifiInfo and supplicant state tracker 128856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // are updated when we get the supplicant state change message which can be 128956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // processed after the SCAN_RESULT message, so at this point the framework doesn't 129056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // know that supplicant is ASSOCIATING. 129156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // A good fix for this race condition would be for the WifiStateMachine to add 129256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // a new transient state where it expects to get the supplicant message indicating 129356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // that it started the association process and within which critical operations 129456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // like autojoin should be deleted. 129556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 129656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // This transient state would remove the need for the roam Wathchdog which 129756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // basically does that. 129856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 129956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // At the moment, we just query the supplicant state synchronously with the 130056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // mWifiNative.status() command, which allow us to know that 130156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // supplicant has started association process, even though we didnt yet get the 130256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // SUPPLICANT_STATE_CHANGE message. 130368fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1305f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1306ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 13077806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1308b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 13097806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1310e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle conf = " current=" + currentConfiguration.configKey(); 1311b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1312b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 13132f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle last = " last=" + lastSelectedConfiguration; 13147806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1315ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1316b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1317b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1318ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1320453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 13212451dbcc4f9641df188326215b204b798eb70c46vandwalle if (supplicantNetId != currentConfiguration.networkId 1322005c1ef113192f898499a407dd266393a8d6b076vandwalle // https://b.corp.google.com/issue?id=16484607 1323005c1ef113192f898499a407dd266393a8d6b076vandwalle // mark this condition as an error only if the mismatched networkId are valid 13242451dbcc4f9641df188326215b204b798eb70c46vandwalle && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 13252451dbcc4f9641df188326215b204b798eb70c46vandwalle && currentConfiguration.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1326453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 1327b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + Integer.toString(supplicantNetId) + " WifiStateMachine=" 1328453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 1329b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.disconnectCommand(); 133068fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 13318639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } else if (currentConfiguration.ephemeral && (!mAllowUntrustedConnections || 133216fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson !haveRecentlySeenScoredBssid(currentConfiguration))) { 13338639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // The current connection is untrusted (the framework added it), but we're either 133416fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // no longer allowed to connect to such networks, the score has been nullified 133516fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // since we connected, or the scored BSSID has gone out of range. 133616fdf07021858fd116d96a5fb00ddb3c166d5ae6Jeff Davidson // Drop the current connection and perform the rest of autojoin. 13378639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson logDbg("attemptAutoJoin() disconnecting from unwanted ephemeral network"); 13388639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mWifiStateMachine.disconnectCommand(); 133968fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 1340453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 1341453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 1342453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 13438c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else { 13448c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID) { 13458c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle // Maybe in the process of associating, skip this attempt 134668fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return false; 13478c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } 1348453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1349453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1350b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1351b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1352931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1353b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1354b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1355b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1356b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1357931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1358931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1359c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 13604dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1361931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1362f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1363e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1364b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1365e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1366e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 136727355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 136827355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 1369abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle // Wait for 5 minutes before reenabling config that have known, 1370abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle // repeated connection or DHCP failures 1371abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle if (config.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE 1372abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle || config.disableReason 1373abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle == WifiConfiguration.DISABLED_ASSOCIATION_REJECT 1374abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle || config.disableReason 1375abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle == WifiConfiguration.DISABLED_AUTH_FAILURE) { 1376abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle if (config.blackListTimestamp == 0 1377abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle || (config.blackListTimestamp > now)) { 1378abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle // Sanitize the timestamp 1379abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.blackListTimestamp = now; 1380abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle } 1381abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle if ((now - config.blackListTimestamp) > 1382abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle mWifiConfigStore.wifiConfigBlacklistMinTimeMilli) { 1383abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle // Re-enable the WifiConfiguration 1384abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.status = WifiConfiguration.Status.ENABLED; 1385abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle 1386abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle // Reset the blacklist condition 1387abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.numConnectionFailures = 0; 1388abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.numIpConfigFailures = 0; 1389abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.numAuthFailures = 0; 1390abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 1391abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle 1392abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle config.dirty = true; 1393abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle } else { 1394abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle if (VDBG) { 1395abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle long delay = mWifiConfigStore.wifiConfigBlacklistMinTimeMilli 1396abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle - (now - config.blackListTimestamp); 1397abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle logDbg("attemptautoJoin " + config.configKey() 1398abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle + " dont unblacklist yet, waiting for " 1399abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle + delay + " ms"); 1400abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle } 1401abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle } 1402abd1740f753ac14e9dec8fced8d3de5059122c2avandwalle } 1403931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Avoid networks disabled because of AUTH failure altogether 1404ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1405ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 1406ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 1407e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + config.configKey(true) 14088242cc81341c80ab5bc057ffdad99a3a1d95be5cvandwalle + " reason " + config.disableReason); 1409ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1410f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1411f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1413931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 141427355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 141527355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1416931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1417931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1418931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1419931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 14202451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 142127355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 142227355a942653264388e909a4276196ee63e57811vandwalle } else { 14234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1424931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 142527355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 14264dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1427931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 142827355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 142927355a942653264388e909a4276196ee63e57811vandwalle } 143027355a942653264388e909a4276196ee63e57811vandwalle } 143127355a942653264388e909a4276196ee63e57811vandwalle } 143227355a942653264388e909a4276196ee63e57811vandwalle 1433931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 14348c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft 14358c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 14368c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Soft) { 143727355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 1438c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("attemptAutoJoin do not unblacklist due to low visibility " 14394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 14404dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) 14414dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " rssi=(" + config.visibility.rssi24 14424dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.rssi5 14434dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 14444dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 144527355a942653264388e909a4276196ee63e57811vandwalle } 14468c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard 14478c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 14488c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Hard) { 1449931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1450931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 145127355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 145227355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 145327355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped soft -> status=" 145427355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1455b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 14564dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 14574dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 14584dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 145927355a942653264388e909a4276196ee63e57811vandwalle } 146027355a942653264388e909a4276196ee63e57811vandwalle } else { 1461c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 146227355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 146327355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped hard -> status=" 146427355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1465b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 14664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 14674dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 14684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 146927355a942653264388e909a4276196ee63e57811vandwalle } 147027355a942653264388e909a4276196ee63e57811vandwalle } 147127355a942653264388e909a4276196ee63e57811vandwalle 147227355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 147327355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1474931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 14754dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 14764dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptAutoJoin skip blacklisted -> status=" 14774dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 1478b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 14794dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 14804dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 14814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 14824dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 148327355a942653264388e909a4276196ee63e57811vandwalle continue; 148427355a942653264388e909a4276196ee63e57811vandwalle } 1485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1486ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 148721bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 148821bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1489ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1490ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1491f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1492f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1493f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 14940eebae7334d6129f7ca1344e4b20199794994358vandwalle boolean isLastSelected = false; 14950eebae7334d6129f7ca1344e4b20199794994358vandwalle if (lastSelectedConfiguration != null && 14960eebae7334d6129f7ca1344e4b20199794994358vandwalle config.configKey().equals(lastSelectedConfiguration)) { 14970eebae7334d6129f7ca1344e4b20199794994358vandwalle isLastSelected = true; 14980eebae7334d6129f7ca1344e4b20199794994358vandwalle } 14990eebae7334d6129f7ca1344e4b20199794994358vandwalle 15000eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.visibility == null) { 15010eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 15020eebae7334d6129f7ca1344e4b20199794994358vandwalle } 15031ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int boost = config.autoJoinUseAggressiveJoinAttemptThreshold + weakRssiBailCount; 15040eebae7334d6129f7ca1344e4b20199794994358vandwalle if ((config.visibility.rssi5 + boost) 15050eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI 15060eebae7334d6129f7ca1344e4b20199794994358vandwalle && (config.visibility.rssi24 + boost) 15070eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI) { 15080eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 15090eebae7334d6129f7ca1344e4b20199794994358vandwalle logDbg("attemptAutoJoin skip due to low visibility -> status=" 15100eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.autoJoinStatus 15110eebae7334d6129f7ca1344e4b20199794994358vandwalle + " key " + config.configKey(true) + " rssi=" 15120eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.visibility.rssi24 + ", " + config.visibility.rssi5 15130eebae7334d6129f7ca1344e4b20199794994358vandwalle + " num=" + config.visibility.num24 15140eebae7334d6129f7ca1344e4b20199794994358vandwalle + ", " + config.visibility.num5); 15150eebae7334d6129f7ca1344e4b20199794994358vandwalle } 15160eebae7334d6129f7ca1344e4b20199794994358vandwalle 1517c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1518c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 15190eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!isLastSelected) { 15200eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinBailedDueToLowRssi = true; 15211ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = true; 15228c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 15230eebae7334d6129f7ca1344e4b20199794994358vandwalle } else { 15240eebae7334d6129f7ca1344e4b20199794994358vandwalle // Next time, try to be a bit more aggressive in auto-joining 15250eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.autoJoinUseAggressiveJoinAttemptThreshold 1526dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle < WifiConfiguration.MAX_INITIAL_AUTO_JOIN_RSSI_BOOST 1527dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle && config.autoJoinBailedDueToLowRssi) { 1528dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle config.autoJoinUseAggressiveJoinAttemptThreshold += 4; 15294dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 15308c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 15310eebae7334d6129f7ca1344e4b20199794994358vandwalle } 1532d30127db46224e45554f8964209221bba8ad41d9vandwalle if (config.numNoInternetAccessReports > 0 1533d30127db46224e45554f8964209221bba8ad41d9vandwalle && !isLastSelected 1534d30127db46224e45554f8964209221bba8ad41d9vandwalle && !config.validatedInternetAccess) { 1535d30127db46224e45554f8964209221bba8ad41d9vandwalle // Avoid autoJoining this network because last time we used it, it didn't 1536d30127db46224e45554f8964209221bba8ad41d9vandwalle // have internet access, and we never manage to validate internet access on this 1537d30127db46224e45554f8964209221bba8ad41d9vandwalle // network configuration 15380eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 1539d30127db46224e45554f8964209221bba8ad41d9vandwalle logDbg("attemptAutoJoin skip candidate due to no InternetAccess " 1540d30127db46224e45554f8964209221bba8ad41d9vandwalle + config.configKey(true) 1541d30127db46224e45554f8964209221bba8ad41d9vandwalle + " num reports " + config.numNoInternetAccessReports); 15429f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 15430eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 15448c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 15458c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1546ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1547e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String cur = ""; 1548e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (candidate != null) { 1549e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle cur = " current candidate " + candidate.configKey(); 1550e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1551e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptAutoJoin trying id=" 1552c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1553b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 1554e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " status=" + config.autoJoinStatus 1555e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + cur); 1556ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1557f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1558f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1562453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 15634dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1564f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1565833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle int order = compareWifiConfigurations(candidate, config); 15662451dbcc4f9641df188326215b204b798eb70c46vandwalle 15672451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1568c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 15692451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 15702451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 15712451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 15722451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 15732451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 15742451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 15752451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 15762451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 15772451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 15782451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 15792451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 15802f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers -100 " + candidate.configKey() 15812451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 15822451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 15832451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 15842451dbcc4f9641df188326215b204b798eb70c46vandwalle } 15852451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 15862451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 15872451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 15882451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 15892451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 15902451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 15912451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 15922451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 15932f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers +100 " + config.configKey() 15942451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 15952451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 15962451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 15972451dbcc4f9641df188326215b204b798eb70c46vandwalle } 15982451dbcc4f9641df188326215b204b798eb70c46vandwalle } 15992451dbcc4f9641df188326215b204b798eb70c46vandwalle 1600f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1601931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1602f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1603f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1604f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1605f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1606f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 16072451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 1608833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle if (mNetworkScoreCache != null && mAllowUntrustedConnections) { 1609f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1610f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1611f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1612f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1613f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1614f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1615f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1616931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 16172451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1618c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1619c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 1620c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle ScanResult untrustedCandidate = null; 16212451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1622c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 1623f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 1624c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1625c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 16268639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (TextUtils.isEmpty(result.SSID) || !result.untrusted || 16278639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !isOpenNetwork(result)) { 1628c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1629c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 16302ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle if (mWifiConfigStore.mDeletedEphemeralSSIDs.contains 16312ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle ("\"" + result.SSID + "\"")) { 16322ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle // SSID had been Forgotten by user, then don't score it 16332ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle continue; 16342ce99b40c36ed0352b31aa85d5f9383d5f0506f5vandwalle } 1635833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle if ((nowMs - result.seen) < mScanResultAutoJoinAge) { 1636c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 1637c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics.incrementOrAddUntrusted(result.SSID, 0, 1); 1638c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 163981c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson boolean isActiveNetwork = lastUntrustedBSSID != null 164081c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson && result.BSSID.equals(lastUntrustedBSSID); 164181c9ea6c343bc7f8d87095237e59844a974d0b70Jeff Davidson int score = mNetworkScoreCache.getNetworkScore(result, isActiveNetwork); 1642c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1643c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1644c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1645c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 1646c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = result; 1647c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1648c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1649c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1650c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " RSSI=" + result.level 1651c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " freq=" + result.frequency 1652c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " score=" + score); 1653c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1654f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1655f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1656f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1657f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1658c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 1659c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID == null 1660c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle || !untrustedCandidate.SSID.equals(lastUntrustedBSSID)) { 1661c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We found a new candidate that we are going to connect to, then 1662c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // increase its connection count 16638c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle mWifiConnectionStatistics. 16648c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle incrementOrAddUntrusted(untrustedCandidate.SSID, 1, 0); 1665c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remember which SSID we are connecting to 1666c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle lastUntrustedBSSID = untrustedCandidate.SSID; 1667c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 16688639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 16698639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // At this point, we have an untrusted network candidate. 16708639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // Create the new ephemeral configuration and see if we should switch over 1671833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate = 1672833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle mWifiConfigStore.wifiConfigurationFromScanResult(untrustedCandidate); 1673833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate.allowedKeyManagement.set(KeyMgmt.NONE); 1674833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle candidate.ephemeral = true; 1675c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1676c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1677b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 16781ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle long lastUnwanted = 16791ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle System.currentTimeMillis() 16801ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle - mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp; 16811ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (candidate == null 16821ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && lastSelectedConfiguration == null 16831ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && currentConfiguration == null 16841ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && didBailDueToWeakRssi 16851ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && (mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp == 0 16861ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle || lastUnwanted > (1000 * 60 * 60 * 24 * 7)) 16871ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle ) { 16881ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // We are bailing out of autojoin although we are seeing a weak configuration, and 16891ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we didn't find another valid candidate 16901ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we are not connected 16911ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - without a user network selection choice 16921ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - ConnectivityService has not triggered an unwanted network disconnect 16931ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // on this device for a week (hence most likely there is no SIM card or cellular) 16941ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // If all those conditions are met, then boost the RSSI of the weak networks 16951ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // that we are seeing so as we will eventually pick one 16961ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount < 10) 16971ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount += 1; 16981ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } else { 16991ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount > 0) 17001ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount -= 1; 17011ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } 17021ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 1703931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1704931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1705931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1706931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1707e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle int networkDelta = compareNetwork(candidate, lastSelectedConfiguration); 1708b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1709b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1710b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1711b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1712b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1713b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1714b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 17152f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle current = " with current " + currentConfiguration.configKey(); 1716b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1717b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1718b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1719b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1720c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1721b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle && currentConfiguration.isLinked(candidate)) 1722b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1723b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1724b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1725b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 17264dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1727931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1728931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1729931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1730931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1731931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1732b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { 1733b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1734b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1735b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1736b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1737b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1738b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1739b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1740b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1741b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1742b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1743b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1744b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1745b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 17462451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 17472451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 17482451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1749c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1750e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 17519f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 17522f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (candidate.BSSID == null || candidate.BSSID.equals("any")) { 17532f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // First step we selected the configuration we want to connect to 17542f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Second step: Look for the best Scan result for this configuration 17552f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // TODO this algorithm should really be done in one step 17562f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1757833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle ScanResult roamCandidate = 1758833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle attemptRoam(null, candidate, mScanResultAutoJoinAge, null); 17592f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && currentBSSID != null 17602f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 17612f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Sanity, we were already asociated to that candidate 17622f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle roamCandidate = null; 17632f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 17642f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 17652f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // If the configuration hasn't a default BSSID selected, and the best 17662f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 17672f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // supplicant will pick it first 17682f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle candidate.autoJoinBSSID = roamCandidate.BSSID; 17692f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) { 17702f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("AutoJoinController: lock to 5GHz " 17712f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + candidate.autoJoinBSSID 17722f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " RSSI=" + roamCandidate.level 17732f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " freq=" + roamCandidate.frequency); 17742f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 1775448c9536a302c58a79e271b1721c08b8882f800evandwalle } else { 1776448c9536a302c58a79e271b1721c08b8882f800evandwalle // We couldnt find a roam candidate 1777448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.autoJoinBSSID = "any"; 17789f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 17799f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1780448c9536a302c58a79e271b1721c08b8882f800evandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1781448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.networkId, networkSwitchType, candidate); 178268fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 17834dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1784b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 17854dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1786b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (networkSwitchType == AUTO_JOIN_IDLE) { 1787e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1788931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1789833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle ScanResult roamCandidate = 1790833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle attemptRoam(null, currentConfiguration, mScanResultAutoJoinAge, currentBSSID); 1791e67ec726c07410073575473c0f50dc737629f5davandwalle /** 1792e67ec726c07410073575473c0f50dc737629f5davandwalle * TODO: (post L initial release) 1793e67ec726c07410073575473c0f50dc737629f5davandwalle * consider handling linked configurations roaming (i.e. extended Roaming) 1794e67ec726c07410073575473c0f50dc737629f5davandwalle * thru the attemptRoam function which makes use of the RSSI roaming threshold. 1795e67ec726c07410073575473c0f50dc737629f5davandwalle * At the moment, extended roaming is only handled thru the attemptAutoJoin() 1796e67ec726c07410073575473c0f50dc737629f5davandwalle * function which compare configurations. 1797e67ec726c07410073575473c0f50dc737629f5davandwalle * 1798e67ec726c07410073575473c0f50dc737629f5davandwalle * The advantage of making use of attemptRoam function is that this function 1799e67ec726c07410073575473c0f50dc737629f5davandwalle * will looks at all the BSSID of each configurations, instead of only looking 1800e67ec726c07410073575473c0f50dc737629f5davandwalle * at WifiConfiguration.visibility which keeps trackonly of the RSSI/band of the 1801e67ec726c07410073575473c0f50dc737629f5davandwalle * two highest BSSIDs. 1802e67ec726c07410073575473c0f50dc737629f5davandwalle */ 1803e67ec726c07410073575473c0f50dc737629f5davandwalle // Attempt linked WifiConfiguration roaming 1804e67ec726c07410073575473c0f50dc737629f5davandwalle /* if (currentConfiguration != null 1805e67ec726c07410073575473c0f50dc737629f5davandwalle && currentConfiguration.linkedConfigurations != null) { 1806e67ec726c07410073575473c0f50dc737629f5davandwalle for (String key : currentConfiguration.linkedConfigurations.keySet()) { 1807e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration link = mWifiConfigStore.getWifiConfiguration(key); 1808e67ec726c07410073575473c0f50dc737629f5davandwalle if (link != null) { 1809833dcce8f6712f7594f06ea33208e3e106c15afcvandwalle roamCandidate = attemptRoam(roamCandidate, link, mScanResultAutoJoinAge, 1810e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1811e67ec726c07410073575473c0f50dc737629f5davandwalle } 1812e67ec726c07410073575473c0f50dc737629f5davandwalle } 1813e67ec726c07410073575473c0f50dc737629f5davandwalle }*/ 1814e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1815e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1816e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1817e67ec726c07410073575473c0f50dc737629f5davandwalle } 18182f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && mWifiStateMachine.shouldSwitchNetwork(999)) { 1819b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1820b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1821b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1822b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1823b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 18241ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle + " RSSI=" + roamCandidate.level); 1825b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1826b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1827e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1828e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1829b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1830b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle currentConfiguration.networkId, 1, roamCandidate); 183168fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle found = true; 1832f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1833f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1834b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 183568fee36dac1dda5c596c00ef33fdbc0962e9ec9fvandwalle return found; 1836f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1837f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1838f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1839