WifiAutoJoinController.java revision b664cfeab6f02e24376ea0a15beb83d142f0b14d
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; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 22f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 230c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 24c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.net.wifi.*; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 27b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalleimport android.os.Process; 28c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 310c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 53ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 54ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 56f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 57f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 58c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 59c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 60453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 65c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 66c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 67c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle /* for debug purpose only : the untrusted SSID we would be connected to if we had VPN */ 68c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle String lastUntrustedBSSID = null; 69c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 70c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 71c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 72c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 73931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 744dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 75931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 764dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 7727355a942653264388e909a4276196ee63e57811vandwalle 78b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 79b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 80b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 81b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 82b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 8397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 8497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 85f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 86c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 87f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 88f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 89f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 90f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 91f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 92c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 9321bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 9421bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 95f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 96f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 97f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 98f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 99f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 104f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 105f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 109ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 110ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 111abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 112ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 113ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 114abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 115ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 116ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 117ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 118ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 119931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 120931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 121ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 122931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 125931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 127b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 128f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 134f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 144be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int addToScanCache(List<ScanResult> scanList) { 145be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 146be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1480c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1490c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 150c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle long nowMs = System.currentTimeMillis(); 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 1521fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 153c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 154c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 157c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Fetch the previous instance for this result 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 160931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If there was a previous cache result for this BSSID, average the RSSI values 161c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 163c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remove the previous Scan Result - this is not necessary 164f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 165e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 166e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 167e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 168e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle WifiKey wkey; 169e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle // Quoted SSIDs are the only one valid at this stage 170e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle try { 171e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 172e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } catch (IllegalArgumentException e) { 173e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 174e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle "] ->skipping this network"); 175e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = null; 176e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 177e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (wkey != null) { 178e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle NetworkKey nkey = new NetworkKey(wkey); 179e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle //if we don't know this scan result then request a score from the scorer 180e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle unknownScanResults.add(nkey); 181e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 182e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 183e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 184e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + result.level + " is not scored"); 185e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 1860c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 187e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 188e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 189e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 190e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + result.level + " is scored : " + score); 1910c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 192f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 193f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 194f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.put(result.BSSID, new ScanResult(result)); 195f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 196be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 197f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.updateSavedNetworkHistory(result); 198f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 199be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 200f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig == null) { 201be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 202c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 203c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 204f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 2051fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (associatedConfig != null && associatedConfig.SSID != null) { 206f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 207f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 208f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + associatedConfig.SSID + " with " + associatedConfig.SSID); 209f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 210be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle mWifiStateMachine.sendMessage( 211be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiStateMachine.CMD_AUTO_SAVE_NETWORK, associatedConfig); 212f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2130d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2140d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2150d616ef3bf635dff8722e064c0be842676390ed8vandwalle long now = System.currentTimeMillis(); 2160d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2170d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2180d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 219f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 220be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (associatedConfig != null) { 221be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 222be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 223f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2240c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2250c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2260c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2270c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 228931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2290c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2300c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 231be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 232f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 233f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 234f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2350888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 236ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 237ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 238ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 239f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 2400888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle String ts = String.format("[%,d us] ", now / 1000); 241ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 242ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message + " stack:" 243ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 244ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 245ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 246ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 247ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 248ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message); 249ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 251f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 252931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 253be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 254be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = mWifiStateMachine.syncGetScanResultsList(); 256be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 258be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 259be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 2609f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + " known=" + numScanResultsKnown 2619f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + doAutoJoin); 262be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 2637806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 2647806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 2657806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 266f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 267be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 271931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 272931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 274f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 278f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 279f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 280f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 281f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 283f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 284f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 285f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 286f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 287f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 288931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 289931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * network link quality changed, called directly from WifiTrafficPoller, 290931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 291931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 292f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 294f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 296931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 297f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 301b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 302b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 303931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private int compareNetwork(WifiConfiguration candidate) { 305b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 306b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 307b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 308f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 309b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 310c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 311c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 312b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return 1000; 313b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 314f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 316b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 319b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 320b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareNetwork will compare " + candidate.configKey() + " with current"); 321b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 322c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(currentNetwork, candidate); 323ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 324f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 325f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 326ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 327ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 328ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 329ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 330ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 331ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 33262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 333ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 334ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 335ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 336931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 33762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 339f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 340c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 342f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 344e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 345c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 346c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 347e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 348e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 349e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 35062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 351931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 35262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 35327355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 35462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 35562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 356f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 357992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 358f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 359ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 360f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 361992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 362992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 363f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 364ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 365992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 366992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 367f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 368f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 369f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 370ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 371ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 3722451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 373c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 3749f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 3759f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 3769f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 3779f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 3789f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 3799f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 3809f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 3819f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 38262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 38362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 384c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 385c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 38662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 38762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 388992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 389992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 390992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 391992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 392f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 39362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 394ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 39562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 39662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 397f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 3982451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare RSSI values so as to evaluate the strength of the user preference 3992451dbcc4f9641df188326215b204b798eb70c46vandwalle int order = compareWifiConfigurationsRSSI(config, selected, null); 4002451dbcc4f9641df188326215b204b798eb70c46vandwalle 4012451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order < -30) { 4022451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is worse than the visible configuration 4032451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a strong choice so as autojoin cannot override this 4042451dbcc4f9641df188326215b204b798eb70c46vandwalle // for instance, the user has select a network 4052451dbcc4f9641df188326215b204b798eb70c46vandwalle // with 1 bar over a network with 3 bars... 4062451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 60; 4072451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -20) { 4082451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 50; 4092451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -10) { 4102451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 40; 4112451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 10) { 4122451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is about same or has a slightly better RSSI 4132451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a weaker choice, here a difference of at least +/-30 in 4142451dbcc4f9641df188326215b204b798eb70c46vandwalle // RSSI comparison triggered by autoJoin will override the choice 4152451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 30; 4162451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order <= 30) { 4172451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is better than the visible configuration 4182451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence we do not know if the user prefers this configuration strongly 4192451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; 4202451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 4212451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 10; 42262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 423f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 424931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 425931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 426931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 427ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 428ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 429ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 430ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 431ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 432ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 4330888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 4342451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 435cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 4362451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer currentChoice = selected.connectChoices.get(config.configKey(true)); 4372451dbcc4f9641df188326215b204b798eb70c46vandwalle if (currentChoice == null || currentChoice.intValue() < choice) { 4387806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentChoice != null) { 4397806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle // User has made this choice multiple time in a row so bump up 4407806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle choice += currentChoice.intValue() / 2; 4417806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 4422451dbcc4f9641df188326215b204b798eb70c46vandwalle // Add the visible config to the selected's connect choice list 4432451dbcc4f9641df188326215b204b798eb70c46vandwalle selected.connectChoices.put(config.configKey(true), choice); 4442451dbcc4f9641df188326215b204b798eb70c46vandwalle } 445f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 44662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 447ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 448ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 44962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 450ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 451931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 45262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 4530888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 4540888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 455931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected's linked configuration from the 456931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // recently seen config's connectChoice list 4570888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 4580888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 4590888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 4600888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 46162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 462ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 463ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 4642451dbcc4f9641df188326215b204b798eb70c46vandwalle // We haven't found the configuration that the user just selected in our 4652451dbcc4f9641df188326215b204b798eb70c46vandwalle // scan cache. 4662451dbcc4f9641df188326215b204b798eb70c46vandwalle // In that case we will need a new scan before attempting to connect to this 4672451dbcc4f9641df188326215b204b798eb70c46vandwalle // configuration anyhow and thus we can process the scan results then. 468ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 469ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 47062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 47262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 47362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 474ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 47562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 47662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 477f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 478f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 479992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 480931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 481992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 482992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 483992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4862451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 4872451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 4882451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 4892451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 490f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 491f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4922451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 4932451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 4942451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 4952451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 496f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 497f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 498f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 499f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5002451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 501f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 502f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 503f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5042451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5052451dbcc4f9641df188326215b204b798eb70c46vandwalle 5062451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 5072451dbcc4f9641df188326215b204b798eb70c46vandwalle //We didn't find the connect choice 5082451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 5092451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5102451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice.intValue() < 0) { 5112451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; // Compatibility with older files 5122451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5132451dbcc4f9641df188326215b204b798eb70c46vandwalle return choice.intValue(); 5142451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5152451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5162451dbcc4f9641df188326215b204b798eb70c46vandwalle 5172451dbcc4f9641df188326215b204b798eb70c46vandwalle 5189f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle int getScoreFromVisibility(WifiConfiguration.Visibility visibility, int rssiBoost, String dbg) { 5192451dbcc4f9641df188326215b204b798eb70c46vandwalle int rssiBoost5 = 0; 5202451dbcc4f9641df188326215b204b798eb70c46vandwalle int score = 0; 5214dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 5222451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 5232451dbcc4f9641df188326215b204b798eb70c46vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold 5242451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 5252451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 5262451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note that 2.4GHz doesn't need a boost since at equal power the RSSI is typically 527e67ec726c07410073575473c0f50dc737629f5davandwalle * at least 6-10 dB higher 5282451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 5299f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle rssiBoost5 = rssiBoostFrom5GHzRssi(visibility.rssi5, dbg+"->"); 5302451dbcc4f9641df188326215b204b798eb70c46vandwalle 5312451dbcc4f9641df188326215b204b798eb70c46vandwalle // Select which band to use so as to score a 5322451dbcc4f9641df188326215b204b798eb70c46vandwalle if (visibility.rssi5 + rssiBoost5 > visibility.rssi24) { 5332451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 5342451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi5 + rssiBoost5 + rssiBoost; 5352451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5362451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 2.4GHz 5372451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi24 + rssiBoost; 538f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5392451dbcc4f9641df188326215b204b798eb70c46vandwalle 5402451dbcc4f9641df188326215b204b798eb70c46vandwalle return score; 541f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 542f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5432451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 5442451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 5452451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 5462451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 5472451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 5482451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 5492451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 5502451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 5512451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 5532451dbcc4f9641df188326215b204b798eb70c46vandwalle 5542451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 5552451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 5562451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 5572451dbcc4f9641df188326215b204b798eb70c46vandwalle 5582451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA; 5592451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreB; 5602451dbcc4f9641df188326215b204b798eb70c46vandwalle 5612451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 562f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 563f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 564f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 5652451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 566b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 567f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 568f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5692451dbcc4f9641df188326215b204b798eb70c46vandwalle 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 5712451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 5722451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 573b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle aRssiBoost = +10; 5742451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 575b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle bRssiBoost = +10; 5762451dbcc4f9641df188326215b204b798eb70c46vandwalle } 577b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 578b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 5792451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5802451dbcc4f9641df188326215b204b798eb70c46vandwalle 5812451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 582b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 583c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + Integer.toString(astatus.rssi24) 584c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + "," + Integer.toString(astatus.rssi5) 5852451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(aRssiBoost) 586c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + b.configKey() + " " 587c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi24) + "," 588c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi5) 5892451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(bRssiBoost) 5902451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 591f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5922451dbcc4f9641df188326215b204b798eb70c46vandwalle 5939f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreA = getScoreFromVisibility(astatus, aRssiBoost, a.configKey()); 5949f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreB = getScoreFromVisibility(bstatus, bRssiBoost, b.configKey()); 5952451dbcc4f9641df188326215b204b798eb70c46vandwalle 5962451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare a and b 5972451dbcc4f9641df188326215b204b798eb70c46vandwalle // If a score is higher then a > b and the order is descending (negative) 5982451dbcc4f9641df188326215b204b798eb70c46vandwalle // If b score is higher then a < b and the order is ascending (positive) 5992451dbcc4f9641df188326215b204b798eb70c46vandwalle order = scoreB - scoreA; 6002451dbcc4f9641df188326215b204b798eb70c46vandwalle 6012451dbcc4f9641df188326215b204b798eb70c46vandwalle // Normalize the order to [-50, +50] 6022451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 50) order = 50; 6032451dbcc4f9641df188326215b204b798eb70c46vandwalle else if (order < -50) order = -50; 6042451dbcc4f9641df188326215b204b798eb70c46vandwalle 6052451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 6062451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 6072451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 6082451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 6092451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 6102451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 6112451dbcc4f9641df188326215b204b798eb70c46vandwalle } 612b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 6132451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 6142451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 6152451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 6162451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 617e67ec726c07410073575473c0f50dc737629f5davandwalle + " scorea=" + scoreA 6182451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 6192451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 6202451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 6212451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 6222451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 623e67ec726c07410073575473c0f50dc737629f5davandwalle + " scoreb=" + scoreB 6242451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 6252451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6262451dbcc4f9641df188326215b204b798eb70c46vandwalle 627f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 628f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 629f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6304dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6312451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 6322451dbcc4f9641df188326215b204b798eb70c46vandwalle 6332451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6342451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6352451dbcc4f9641df188326215b204b798eb70c46vandwalle 6362451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis : boost RSSI of current configuration before 6372451dbcc4f9641df188326215b204b798eb70c46vandwalle // looking up the score 6382451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != mCurrentConfigurationKey) { 6392451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 640c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle aRssiBoost += 20; 6412451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 642c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle bRssiBoost += 20; 6432451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6442451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6452451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA = getConfigNetworkScore(a, 3000, aRssiBoost); 646ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle int scoreB = getConfigNetworkScore(b, 3000, bRssiBoost); 6472451dbcc4f9641df188326215b204b798eb70c46vandwalle 6482451dbcc4f9641df188326215b204b798eb70c46vandwalle // Both configurations need to have a score for the scorer to be used 6492451dbcc4f9641df188326215b204b798eb70c46vandwalle // ...and the scores need to be different:-) 6502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 6512451dbcc4f9641df188326215b204b798eb70c46vandwalle || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 652e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 653b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer no-scores: " 654e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + a.configKey() 655e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " " 656e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + b.configKey()); 657e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 6582451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 6592451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6602451dbcc4f9641df188326215b204b798eb70c46vandwalle 6612451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 6622451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 6632451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA < scoreB) { 6642451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; 6652451dbcc4f9641df188326215b204b798eb70c46vandwalle } if (scoreA > scoreB) { 6662451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; 6672451dbcc4f9641df188326215b204b798eb70c46vandwalle } 668b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 6692451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 6702451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 6712451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 6722451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 673e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreA 6742451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 6752451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 6762451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 6772451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 6782451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 679e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreB 6802451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + Integer.toString(scoreB - scoreA)); 6812451dbcc4f9641df188326215b204b798eb70c46vandwalle } 682c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 6832451dbcc4f9641df188326215b204b798eb70c46vandwalle // If scoreA > scoreB, the comparison is descending hence the return value is negative 6842451dbcc4f9641df188326215b204b798eb70c46vandwalle return scoreB - scoreA; 6852451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6862451dbcc4f9641df188326215b204b798eb70c46vandwalle 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 689117be607246604e875de62aa8cdd99700b77a2b4vandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 692453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 693453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 694453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 6952451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 6962451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 698f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 699f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 700f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 701f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 702f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 703b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 704453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 705f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 706931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 707f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 708f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 709f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 710b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 711453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 712f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 713931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 714f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 715f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7162451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 7172451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 7182451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 719f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7202451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 7212451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 7222451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 724f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 7262451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 727931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7282451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 729f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 730b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 731453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 732b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 733b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 734f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7352451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle 7372451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 7382451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 739931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 7402451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 7414dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 742b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 743b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 744b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 745f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 746f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 747f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 748ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 750931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 751931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 752f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 753931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7542451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 755b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 756453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 757f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 758f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 759f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 760f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 761931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 7622451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 763b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 764453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 765f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7662451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 767f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 768f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 769f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 770f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 771931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 772f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 773931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 774f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 775931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 776f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7772451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 778b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 779453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 780f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 781f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 782f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 783f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 784f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 785c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 786c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 787c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 788c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 789c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 790c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 791c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 792c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 793c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 794b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 795b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 796b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 797b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 798c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 799c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 800c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 801c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 802c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 803c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 804c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 805c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 806c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 807c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 808c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 809c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 810c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 811c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 812c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 8139f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 814e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 815e67ec726c07410073575473c0f50dc737629f5davandwalle > mWifiConfigStore.thresholdBandPreferenceLowRssi5) { 816e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 817e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 818e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 819e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 8209f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle int boost = mWifiConfigStore.factorBandPreferenceLowRssi5 8219f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle *(rssi - mWifiConfigStore.thresholdBandPreferenceLowRssi5); 822e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 823e67ec726c07410073575473c0f50dc737629f5davandwalle // 50 dB boost is set so as to overcome the hysteresis of +20 plus a difference of 824e67ec726c07410073575473c0f50dc737629f5davandwalle // 25 dB between 2.4 and 5GHz band. This allows jumping from 2.4 to 5GHz 825e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 826e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 827e67ec726c07410073575473c0f50dc737629f5davandwalle } 8289f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 829b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " boost " + boost); 8309f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 831e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 832e67ec726c07410073575473c0f50dc737629f5davandwalle } 833e67ec726c07410073575473c0f50dc737629f5davandwalle 834e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 835e67ec726c07410073575473c0f50dc737629f5davandwalle < mWifiConfigStore.thresholdBandPreferenceRssi24) { 836e67ec726c07410073575473c0f50dc737629f5davandwalle // penalize by 10 if < -75 837e67ec726c07410073575473c0f50dc737629f5davandwalle return -10; 838e67ec726c07410073575473c0f50dc737629f5davandwalle } 839e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 840e67ec726c07410073575473c0f50dc737629f5davandwalle } 841c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /** 842e67ec726c07410073575473c0f50dc737629f5davandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 843e67ec726c07410073575473c0f50dc737629f5davandwalle * 844e67ec726c07410073575473c0f50dc737629f5davandwalle * Run thru all recent scan result of a WifiConfiguration and select the 845e67ec726c07410073575473c0f50dc737629f5davandwalle * best one. 846c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle */ 847e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 848e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 849b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 850b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 851b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 852b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 853e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 8544dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 855b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.scanResultCache == null) { 856b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 857b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 858b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 859e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 8604dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 861b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle if (current.scanResultCache.size() > 6) { 862b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 863c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 864c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + current.scanResultCache.size() + " --> bail"); 865b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 866931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 867c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 868e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 8694dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 870b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 871b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.bssidOwnerUid!= 0 && current.bssidOwnerUid != Process.WIFI_UID) { 872b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 873c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam BSSID owner is " 874c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Long.toString(current.bssidOwnerUid) + " -> bail"); 875b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 876e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 8774dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 8784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 879931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 880c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 8812451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 8824dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 88397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle for (ScanResult b : current.scanResultCache.values()) { 88497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 88597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 88697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 88797b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 888931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if ((b.seen == 0) || (b.BSSID == null) 8890d616ef3bf635dff8722e064c0be842676390ed8vandwalle || ((nowMs - b.seen) > age) 8900d616ef3bf635dff8722e064c0be842676390ed8vandwalle || b.autoJoinStatus != ScanResult.ENABLED) { 8914dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 8923a2a3d226881cce8a4e511302231d843b0def303vandwalle } 8934dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 894931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 8954dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 8964dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 8974dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 8984dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 8994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 9002451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 9017806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 902931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9038c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (b.level <= mWifiConfigStore.thresholdBandPreferenceRssi24) { 90497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle bRssiBoost = +8; 905c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 90697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle bRssiBoost = +14; 907c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9084dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9097806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 9108c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (a.level <= mWifiConfigStore.thresholdBandPreferenceRssi24) { 911931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 91297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle aRssiBoost = +8; 913c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 91497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle aRssiBoost = +14; 915c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9164dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9172451dbcc4f9641df188326215b204b798eb70c46vandwalle 91897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 9192451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 9202451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 92197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 92297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 92397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 92497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 9259f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 9269f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 9279f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 928e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 9299f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 9304dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 931e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 9329f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 9334dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 9354dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 936c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 937c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 938c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 939c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9404dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 941c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 94297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 94397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 944c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 945c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 946c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 947c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 9482451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 9492451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 950c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 951931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 952c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 9534dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9544dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9553a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 9563a2a3d226881cce8a4e511302231d843b0def303vandwalle if (VDBG) { 9577806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 958e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 959e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 9607806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 9617806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 9627806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 9637806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 9647806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 9653a2a3d226881cce8a4e511302231d843b0def303vandwalle } 9664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9673a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 9684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9694dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 970931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 9712451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 9722451dbcc4f9641df188326215b204b798eb70c46vandwalle * 9732451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 9742451dbcc4f9641df188326215b204b798eb70c46vandwalle * 9752451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 9762451dbcc4f9641df188326215b204b798eb70c46vandwalle * 9772451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 9782451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 9792451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 9802451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConfigNetworkScore(WifiConfiguration config, int age, int rssiBoost) { 9812451dbcc4f9641df188326215b204b798eb70c46vandwalle 9822451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 983e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 984b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 985e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 986e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 9871db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 9881db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 9891db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (config.scanResultCache == null) { 990e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 991b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 992e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 993e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 9941db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 9952451dbcc4f9641df188326215b204b798eb70c46vandwalle } 9962451dbcc4f9641df188326215b204b798eb70c46vandwalle 9972451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 9982451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 9992451dbcc4f9641df188326215b204b798eb70c46vandwalle 10001db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 10011db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 10022451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 10031db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle for (ScanResult result : config.scanResultCache.values()) { 10042451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < age) { 10052451dbcc4f9641df188326215b204b798eb70c46vandwalle int sc = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 10061db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 10071db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 10082451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10092451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10102451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10111db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 10121db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10131db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1014e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1015e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1016b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1017e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1018e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1019b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1020e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " boost=" + Integer.toString(rssiBoost) 1021e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1022e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1023e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1024e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 10251db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 10262451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10272451dbcc4f9641df188326215b204b798eb70c46vandwalle 10282451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 1029931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 1030931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1031f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 1032c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 1033b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 10344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 10358c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 10368c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1037931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1038453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1039453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1040453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1041453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1042f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1043f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1044931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 104527355a942653264388e909a4276196ee63e57811vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, false); 1046f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 1047f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("attemptAutoJoin nothing"); 1048f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 1049f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1050f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1051931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 1052f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String val = mWifiNative.status(); 1053f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 1054f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1055f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 1056f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 1057f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1058f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1059b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int supplicantNetId = -1; 1060f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 1061f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 1062f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 1063b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId = 0; 1064f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 1065f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 1066f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1067f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 1068b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId *= 10; 1069b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId += c - 0x30; 1070f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 1071f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1072f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 1073f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1074f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 107556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } else if (key.contains("wpa_state=ASSOCIATING") 107656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=ASSOCIATED") 107756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=FOUR_WAY_HANDSHAKE") 107856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=GROUP_KEY_HANDSHAKE")) { 107956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle if (DBG) { 108056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle logDbg("attemptAutoJoin: bail out due to sup state " + key); 108156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } 108256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // After WifiStateMachine ask the supplicant to associate or reconnect 108356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // we might still obtain scan results from supplicant 108456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // however the supplicant state in the mWifiInfo and supplicant state tracker 108556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // are updated when we get the supplicant state change message which can be 108656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // processed after the SCAN_RESULT message, so at this point the framework doesn't 108756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // know that supplicant is ASSOCIATING. 108856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // A good fix for this race condition would be for the WifiStateMachine to add 108956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // a new transient state where it expects to get the supplicant message indicating 109056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // that it started the association process and within which critical operations 109156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // like autojoin should be deleted. 109256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 109356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // This transient state would remove the need for the roam Wathchdog which 109456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // basically does that. 109556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 109656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // At the moment, we just query the supplicant state synchronously with the 109756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // mWifiNative.status() command, which allow us to know that 109856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // supplicant has started association process, even though we didnt yet get the 109956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // SUPPLICANT_STATE_CHANGE message. 110056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle return; 1101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1103ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 11047806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1105b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 11067806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1107b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle conf = " curent=" + currentConfiguration.configKey(); 1108b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1109b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 1110b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle last = " last=" + last; 11117806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1112ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1113b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1114b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1115ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1117453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 11182451dbcc4f9641df188326215b204b798eb70c46vandwalle if (supplicantNetId != currentConfiguration.networkId 11192451dbcc4f9641df188326215b204b798eb70c46vandwalle //https://b.corp.google.com/issue?id=16484607 11202451dbcc4f9641df188326215b204b798eb70c46vandwalle //mark this confition as an error only if the mismatched networkId are valid 11212451dbcc4f9641df188326215b204b798eb70c46vandwalle && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 11222451dbcc4f9641df188326215b204b798eb70c46vandwalle && currentConfiguration.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1123453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 1124b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + Integer.toString(supplicantNetId) + " WifiStateMachine=" 1125453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 1126b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.disconnectCommand(); 1127b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle return; 1128453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 1129453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 1130453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 11318c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else { 11328c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID) { 11338c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle // Maybe in the process of associating, skip this attempt 11348c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle return; 11358c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } 1136453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1137453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1138b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1139b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1140931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1141b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1142b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1143b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1144b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1145931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1146931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1147c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 11484dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1149931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((config.status == WifiConfiguration.Status.DISABLED) 1152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE)) { 1153ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1154b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptAutoJoin skip candidate due to auth failure: " 1155ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 1156ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1159453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1160e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1161b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1162e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1163e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 116427355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 116527355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 1166931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Avoid networks disabled because of AUTH failure altogether 1167ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1168ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 1169ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 1170ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 1171ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1172f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1173f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1174f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1175931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 117627355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 117727355a942653264388e909a4276196ee63e57811vandwalle long now = System.currentTimeMillis(); 117827355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1179931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1180931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1181931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1182931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 11832451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 118427355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 118527355a942653264388e909a4276196ee63e57811vandwalle } else { 11864dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1187931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 118827355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 11894dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1190931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 119127355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 119227355a942653264388e909a4276196ee63e57811vandwalle } 119327355a942653264388e909a4276196ee63e57811vandwalle } 119427355a942653264388e909a4276196ee63e57811vandwalle } 119527355a942653264388e909a4276196ee63e57811vandwalle 1196931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 11978c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft 11988c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 11998c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Soft) { 120027355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 1201c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("attemptAutoJoin do not unblacklist due to low visibility " 12024dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 12034dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) 12044dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " rssi=(" + config.visibility.rssi24 12054dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.rssi5 12064dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12074dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 120827355a942653264388e909a4276196ee63e57811vandwalle } 12098c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard 12108c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 12118c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Hard) { 1212931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1213931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 121427355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 121527355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 121627355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped soft -> status=" 121727355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1218b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 12194dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 12204dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12214dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 122227355a942653264388e909a4276196ee63e57811vandwalle } 122327355a942653264388e909a4276196ee63e57811vandwalle } else { 1224c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 122527355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 122627355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped hard -> status=" 122727355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1228b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 12294dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 12304dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12314dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 123227355a942653264388e909a4276196ee63e57811vandwalle } 123327355a942653264388e909a4276196ee63e57811vandwalle } 123427355a942653264388e909a4276196ee63e57811vandwalle 123527355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 123627355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1237931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 12384dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 12394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptAutoJoin skip blacklisted -> status=" 12404dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 1241b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 12424dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 12434dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12444dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 12454dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 124627355a942653264388e909a4276196ee63e57811vandwalle continue; 124727355a942653264388e909a4276196ee63e57811vandwalle } 1248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1249ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 125021bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 125121bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1252ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1253ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 125721bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle if (lastSelectedConfiguration == null || 125821bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle !config.configKey().equals(lastSelectedConfiguration)) { 1259c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1260c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 12618c9088d11880553458f09377cc60d6eb7e66747bvandwalle if (config.visibility == null) { 12628c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 12638c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 12648c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 12658c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI 1266c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle && config.visibility.rssi24 12678c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI) { 12684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 1269ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle logDbg("attemptAutoJoin skip due to low visibility -> status=" 12704dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 12714dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) + " rssi=" 12724dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + ", " + config.visibility.rssi5 12734dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " num=" + config.visibility.num24 12744dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ", " + config.visibility.num5); 12754dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 12768c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 12778c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 12789f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (config.noInternetAccess) { 12799f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Avoid autojoining this network because last time we used it, it didn't 12809f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // have internet access 12819f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (DBG) { 12829f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle logDbg("attemptAutoJoin skip candidate due to noInternetAccess flag " 12839f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + config.configKey(true)); 12849f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 12859f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle continue; 12869f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 12878c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 12888c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1289ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1290c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptAutoJoin trying candidate id=" 1291c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1292b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 12934dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " status=" + config.autoJoinStatus); 1294ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1296f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1297f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1300453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 13014dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1303c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(candidate, config); 13042451dbcc4f9641df188326215b204b798eb70c46vandwalle 13052451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1306c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 13072451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 13082451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 13092451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 13102451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 13112451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 13122451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 13132451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 13142451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 13152451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 13162451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 13172451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 13182451dbcc4f9641df188326215b204b798eb70c46vandwalle logDbg(" prefers -100 " + candidate.configKey() 13192451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 13202451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 13212451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 13222451dbcc4f9641df188326215b204b798eb70c46vandwalle } 13232451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 13242451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 13252451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 13262451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 13272451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 13282451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 13292451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 13302451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 13312451dbcc4f9641df188326215b204b798eb70c46vandwalle logDbg(" prefers +100 " + config.configKey() 13322451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 13332451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 13342451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 13352451dbcc4f9641df188326215b204b798eb70c46vandwalle } 13362451dbcc4f9641df188326215b204b798eb70c46vandwalle } 13372451dbcc4f9641df188326215b204b798eb70c46vandwalle 1338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1339931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1340f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1342f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1344f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1345c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Wait for VPN to be available on the system to make use of this code 13462451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 1347f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 1348f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1349f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1350f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 1351f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1352f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1353f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1354f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1355f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1356931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 13572451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1358c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1359c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 1360c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle ScanResult untrustedCandidate = null; 13612451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1362c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 1363f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 1364c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int rssiBoost = 0; 1365c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1366c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 1367c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (TextUtils.isEmpty(result.SSID) || !result.untrusted) { 1368c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1369c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 13702451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < 3000) { 1371c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 1372c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics.incrementOrAddUntrusted(result.SSID, 0, 1); 1373c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 1374c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID != null 1375c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && result.BSSID.equals(lastUntrustedBSSID)) { 1376c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Apply a large hysteresis to the untrusted network we are connected to 1377c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle rssiBoost = 25; 1378c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1379c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int score = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 1380c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1381c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1382c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1383c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 1384c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = result; 1385c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1386c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1387c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1388c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " RSSI=" + result.level 1389c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " freq=" + result.frequency 1390c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " score=" + score); 1391c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1392f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1393f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1394f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1395f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1396c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 1397c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID == null 1398c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle || !untrustedCandidate.SSID.equals(lastUntrustedBSSID)) { 1399c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We found a new candidate that we are going to connect to, then 1400c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // increase its connection count 14018c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle mWifiConnectionStatistics. 14028c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle incrementOrAddUntrusted(untrustedCandidate.SSID, 1, 0); 1403c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remember which SSID we are connecting to 1404c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle lastUntrustedBSSID = untrustedCandidate.SSID; 1405c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1406c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1407c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Now we don't have VPN, and thus don't actually connect to the untrusted candidate 1408c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = null; 1409c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1410b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 1411931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1412931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1413931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1414931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1415b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkDelta = compareNetwork(candidate); 1416b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1417b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1418b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1419b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1420b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1421b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1422b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 1423b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle current = " with current " + currentConfiguration; 1424b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1425b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1426b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1427b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1428c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1429b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle && currentConfiguration.isLinked(candidate)) 1430b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1431b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1432b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1433b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 14344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1435931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1436931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1437931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1438931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1439931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1440b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { 1441b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1442b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1443b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1444b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1445b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1446b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1447b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1448b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1449b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1450b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1451b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1452b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1453b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 14542451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 14552451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 14562451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1457c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1458e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 14599f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 14609f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // First step we selected the configuration we want to connect to 14619f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Second step: Look for the best Scan result for this configuration 14629f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // TODO this algorithm should really be done in one step 14639f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1464b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle ScanResult roamCandidate = attemptRoam(null, candidate, 3000, null); 14659f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (roamCandidate != null && currentBSSID != null 14669f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1467b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle // Sanity, we were already asociated to that candidate 14689f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle roamCandidate = null; 14699f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1470b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 14719f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // If the configuration hasn't a default BSSID selected, and the best 14729f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 14739f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // supplicant will pick it first 14749f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle candidate.BSSID = roamCandidate.BSSID; 14759f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG) { 14769f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle logDbg("AutoJoinController: lock to 5GHz " 14779f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + candidate.SSID 14789f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + " RSSI=" + roamCandidate.level 14799f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + " freq=" + roamCandidate.frequency); 14809f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 14819f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1482b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1483b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle candidate.networkId, networkSwitchType, candidate); 14844dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1485b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 14864dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1487b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (networkSwitchType == AUTO_JOIN_IDLE) { 1488e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1489931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1490e67ec726c07410073575473c0f50dc737629f5davandwalle ScanResult roamCandidate = attemptRoam(null, currentConfiguration, 3000, 1491e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1492e67ec726c07410073575473c0f50dc737629f5davandwalle /** 1493e67ec726c07410073575473c0f50dc737629f5davandwalle * TODO: (post L initial release) 1494e67ec726c07410073575473c0f50dc737629f5davandwalle * consider handling linked configurations roaming (i.e. extended Roaming) 1495e67ec726c07410073575473c0f50dc737629f5davandwalle * thru the attemptRoam function which makes use of the RSSI roaming threshold. 1496e67ec726c07410073575473c0f50dc737629f5davandwalle * At the moment, extended roaming is only handled thru the attemptAutoJoin() 1497e67ec726c07410073575473c0f50dc737629f5davandwalle * function which compare configurations. 1498e67ec726c07410073575473c0f50dc737629f5davandwalle * 1499e67ec726c07410073575473c0f50dc737629f5davandwalle * The advantage of making use of attemptRoam function is that this function 1500e67ec726c07410073575473c0f50dc737629f5davandwalle * will looks at all the BSSID of each configurations, instead of only looking 1501e67ec726c07410073575473c0f50dc737629f5davandwalle * at WifiConfiguration.visibility which keeps trackonly of the RSSI/band of the 1502e67ec726c07410073575473c0f50dc737629f5davandwalle * two highest BSSIDs. 1503e67ec726c07410073575473c0f50dc737629f5davandwalle */ 1504e67ec726c07410073575473c0f50dc737629f5davandwalle // Attempt linked WifiConfiguration roaming 1505e67ec726c07410073575473c0f50dc737629f5davandwalle /* if (currentConfiguration != null 1506e67ec726c07410073575473c0f50dc737629f5davandwalle && currentConfiguration.linkedConfigurations != null) { 1507e67ec726c07410073575473c0f50dc737629f5davandwalle for (String key : currentConfiguration.linkedConfigurations.keySet()) { 1508e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration link = mWifiConfigStore.getWifiConfiguration(key); 1509e67ec726c07410073575473c0f50dc737629f5davandwalle if (link != null) { 1510e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = attemptRoam(roamCandidate, link, 3000, 1511e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1512e67ec726c07410073575473c0f50dc737629f5davandwalle } 1513e67ec726c07410073575473c0f50dc737629f5davandwalle } 1514e67ec726c07410073575473c0f50dc737629f5davandwalle }*/ 1515e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1516e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1517e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1518e67ec726c07410073575473c0f50dc737629f5davandwalle } 1519b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (roamCandidate != null) { 1520b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1521b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1522b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1523b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1524b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 1525b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " RSSI=" + roamCandidate.frequency); 1526b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1527b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1528e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1529e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1530b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1531b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle currentConfiguration.networkId, 1, roamCandidate); 1532f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1533f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1534b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 1535f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1538