WifiAutoJoinController.java revision d30127db46224e45554f8964209221bba8ad41d9
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * Copyright (C) 2014 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 220c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 23c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.net.wifi.*; 248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidsonimport android.net.wifi.WifiConfiguration.KeyMgmt; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 26b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalleimport android.os.Process; 27c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 28f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 300c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 31f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 52ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 53ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 56f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 57c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 58c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 59453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 64c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 65c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 668639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** Whether to allow connections to untrusted networks. */ 678639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean mAllowUntrustedConnections = false; 688639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 69c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle /* for debug purpose only : the untrusted SSID we would be connected to if we had VPN */ 70c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle String lastUntrustedBSSID = null; 71c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 72c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 73c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 74c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 75931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 764dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 77931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 784dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 7927355a942653264388e909a4276196ee63e57811vandwalle 80b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 81b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 82b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 83b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 84b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 8597b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 8697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 871ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // Below are AutoJoin wide parameters indicating if we should be aggressive before joining 881ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // weak network. Note that we cannot join weak network that are going to be marked as unanted by 891ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // ConnectivityService because this will trigger link flapping. 901ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 911ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * There was a non-blacklisted configuration that we bailed from because of a weak signal 921ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 931ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle boolean didBailDueToWeakRssi = false; 941ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle /** 951ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * number of time we consecutively bailed out of an eligible network because its signal 961ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle * was too weak 971ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle */ 981ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int weakRssiBailCount = 0; 991ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 101c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 104f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 105f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 107c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 10821bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 10921bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 110f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 111f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 114f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 122f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 124ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 125ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 126abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 127ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 128ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 129abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 130ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 131ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 132ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 133ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 134931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 135931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 136ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 137931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 140931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 142b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 159be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int addToScanCache(List<ScanResult> scanList) { 160be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 161be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 1627b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle boolean didAssociate = false; 163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1640c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1650c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 166c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle long nowMs = System.currentTimeMillis(); 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 1681fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 169c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 170c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 171f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 172f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 173c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Fetch the previous instance for this result 174f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 175f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 176931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If there was a previous cache result for this BSSID, average the RSSI values 177c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 178f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 179c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remove the previous Scan Result - this is not necessary 180f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 181e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 182e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 183e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 184e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle WifiKey wkey; 185e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle // Quoted SSIDs are the only one valid at this stage 186e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle try { 187e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 188e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } catch (IllegalArgumentException e) { 189e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 190e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle "] ->skipping this network"); 191e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = null; 192e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 193e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (wkey != null) { 194e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle NetworkKey nkey = new NetworkKey(wkey); 195e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle //if we don't know this scan result then request a score from the scorer 196e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle unknownScanResults.add(nkey); 197e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 198e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 1997b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2007b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2017b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 202e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2037b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is not scored"); 204e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 2050c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 206e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 2077b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 2087b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 2097b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 210e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 211e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 2127b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is scored : " + score); 2130c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 214f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 215f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 216e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // scanResultCache.put(result.BSSID, new ScanResult(result)); 217e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle scanResultCache.put(result.BSSID, result); 218be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 2197b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = mWifiConfigStore.updateSavedNetworkHistory(result); 220f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 221be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 2227b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (!didAssociate) { 223be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 224c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 225c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 226f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 2271fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (associatedConfig != null && associatedConfig.SSID != null) { 228f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 229f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 2307b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + associatedConfig.SSID + " with " + result.SSID); 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 232be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle mWifiStateMachine.sendMessage( 233be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiStateMachine.CMD_AUTO_SAVE_NETWORK, associatedConfig); 2347b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = true; 235f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2360d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2370d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2380d616ef3bf635dff8722e064c0be842676390ed8vandwalle long now = System.currentTimeMillis(); 2390d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2400d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2410d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 242f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2437b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (didAssociate) { 244be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 245a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate ++; 246a0708b09ad17b086c008ab100aec7143d7613c80vandwalle } else { 247a0708b09ad17b086c008ab100aec7143d7613c80vandwalle result.isAutoJoinCandidate = 0; 248be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 249f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2500c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2510c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2520c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2530c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 254931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2550c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2560c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 257be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 259f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2610888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 262ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 263ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 264ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 266ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 2672f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message + " stack:" 268ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 269ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 270ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 271ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 272ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 2732f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message); 274ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 277931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 278be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 279be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 280e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle List<ScanResult> scanList = mWifiStateMachine.getScanResultsListNoCopyUnsync(); 281be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 283be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 284be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 2852f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " known=" + numScanResultsKnown + " " 2869f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + doAutoJoin); 287be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 2887806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 2897806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 2907806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 291f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 292be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 294f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 295f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 296931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 297931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 303f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 305f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 306f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 307f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 308f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 309f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 310f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 311f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 312f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 313931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 314931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * network link quality changed, called directly from WifiTrafficPoller, 315931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 316931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 318f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 320f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 321931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 324f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 325f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 326b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 327b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 328931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 329e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle private int compareNetwork(WifiConfiguration candidate, 330e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String lastSelectedConfiguration) { 331b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 332b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 333b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 334f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 335b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 336c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 337c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 338b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return 1000; 339b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 340f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 341f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 342b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 344f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 345b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 346e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("compareNetwork will compare " + candidate.configKey() 347e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " with current " + currentNetwork.configKey()); 348b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 349c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(currentNetwork, candidate); 350e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 351e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 352e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 353e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // enableNetwork with disableOthers=true WifiManager API 354e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // As this is a direct user choice, we strongly prefer this configuration, 355e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // hence give +/-100 356e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if ((lastSelectedConfiguration != null) 357e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && currentNetwork.configKey().equals(lastSelectedConfiguration)) { 358e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // currentNetwork is the last selected configuration, 359e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 360e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 361e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by reducing order by -100 362e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order - 100; 363e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 364e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers -100 " + currentNetwork.configKey() 365e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + candidate.configKey() 366e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 367e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 368e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 369e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } else if ((lastSelectedConfiguration != null) 370e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 371e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // candidate is the last selected configuration, 372e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 373e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 374e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by increasing order by +100 375e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order + 100; 376e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 377e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers +100 " + candidate.configKey() 378e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + currentNetwork.configKey() 379e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 380e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 381e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 382e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 383e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 384ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 385f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 386f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 387ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 388ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 389ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 390ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 391ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 392ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 39362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 394ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 395ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 396ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 397931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 39862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 399f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 400f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 401c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 403f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 404f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 405e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 406c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 407c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 408e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 409e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 410e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 41162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 412931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 41362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 41427355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 41562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 416e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle selected.dirty = true; 41762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 419992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 421ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 423992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 424992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 425f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 426ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 427992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 428992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 429f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 430f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 431f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 432ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 433ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 4342451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 435c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 4369f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 4379f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 4389f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 4399f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 4409f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 4419f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 4429f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 4439f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 44462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 44562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 446c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 447c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 44862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 44962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 450992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 451992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 452992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 453992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 45562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 456ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 45762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 45862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 459f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4602451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare RSSI values so as to evaluate the strength of the user preference 4612451dbcc4f9641df188326215b204b798eb70c46vandwalle int order = compareWifiConfigurationsRSSI(config, selected, null); 4622451dbcc4f9641df188326215b204b798eb70c46vandwalle 4632451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order < -30) { 4642451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is worse than the visible configuration 4652451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a strong choice so as autojoin cannot override this 4662451dbcc4f9641df188326215b204b798eb70c46vandwalle // for instance, the user has select a network 4672451dbcc4f9641df188326215b204b798eb70c46vandwalle // with 1 bar over a network with 3 bars... 4682451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 60; 4692451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -20) { 4702451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 50; 4712451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -10) { 4722451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 40; 4732f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else if (order < 20) { 4742451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is about same or has a slightly better RSSI 4752451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a weaker choice, here a difference of at least +/-30 in 4762451dbcc4f9641df188326215b204b798eb70c46vandwalle // RSSI comparison triggered by autoJoin will override the choice 4772451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 30; 4782f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else { 4792451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is better than the visible configuration 4802451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence we do not know if the user prefers this configuration strongly 4812451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; 48262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 483f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 484931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 485931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 486931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 487ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 488ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 489ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 490ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 491ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 492ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 4930888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 4942451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 495cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 4962451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer currentChoice = selected.connectChoices.get(config.configKey(true)); 4972f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (currentChoice != null) { 4982f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // User has made this choice multiple time in a row, so bump up a lot 4992f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle choice += currentChoice.intValue(); 5002451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5012f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Add the visible config to the selected's connect choice list 5022f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle selected.connectChoices.put(config.configKey(true), choice); 503f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 50462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 505ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 506ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 50762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 508ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 509931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 51062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 5110888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 5120888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 513931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected's linked configuration from the 514931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // recently seen config's connectChoice list 5150888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 5160888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 5170888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 5180888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 51962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 520ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 521ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 5222451dbcc4f9641df188326215b204b798eb70c46vandwalle // We haven't found the configuration that the user just selected in our 5232451dbcc4f9641df188326215b204b798eb70c46vandwalle // scan cache. 5242451dbcc4f9641df188326215b204b798eb70c46vandwalle // In that case we will need a new scan before attempting to connect to this 5252451dbcc4f9641df188326215b204b798eb70c46vandwalle // configuration anyhow and thus we can process the scan results then. 526ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 527ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 52862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 529f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 53062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 53162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 532ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 53362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 53462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 535f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 537992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 538931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 539992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 540992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 541992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 542f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5442451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 5452451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 5462451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 5472451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 548f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 549f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 5512451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 5522451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 5532451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 554f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 555f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 556f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 557f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5582451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5622451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5632451dbcc4f9641df188326215b204b798eb70c46vandwalle 5642451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 5652451dbcc4f9641df188326215b204b798eb70c46vandwalle //We didn't find the connect choice 5662451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 5672451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5682451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice.intValue() < 0) { 5692451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; // Compatibility with older files 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5712451dbcc4f9641df188326215b204b798eb70c46vandwalle return choice.intValue(); 5722451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5732451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5742451dbcc4f9641df188326215b204b798eb70c46vandwalle 5752451dbcc4f9641df188326215b204b798eb70c46vandwalle 5769f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle int getScoreFromVisibility(WifiConfiguration.Visibility visibility, int rssiBoost, String dbg) { 5772451dbcc4f9641df188326215b204b798eb70c46vandwalle int rssiBoost5 = 0; 5782451dbcc4f9641df188326215b204b798eb70c46vandwalle int score = 0; 5794dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 5802451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 5812451dbcc4f9641df188326215b204b798eb70c46vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold 5822451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 5832451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 5842451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note that 2.4GHz doesn't need a boost since at equal power the RSSI is typically 585e67ec726c07410073575473c0f50dc737629f5davandwalle * at least 6-10 dB higher 5862451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 5879f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle rssiBoost5 = rssiBoostFrom5GHzRssi(visibility.rssi5, dbg+"->"); 5882451dbcc4f9641df188326215b204b798eb70c46vandwalle 5892451dbcc4f9641df188326215b204b798eb70c46vandwalle // Select which band to use so as to score a 5902451dbcc4f9641df188326215b204b798eb70c46vandwalle if (visibility.rssi5 + rssiBoost5 > visibility.rssi24) { 5912451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 5922451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi5 + rssiBoost5 + rssiBoost; 5932451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5942451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 2.4GHz 5952451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi24 + rssiBoost; 596f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5972451dbcc4f9641df188326215b204b798eb70c46vandwalle 5982451dbcc4f9641df188326215b204b798eb70c46vandwalle return score; 599f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 600f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6012451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 6022451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 6032451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 6042451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 6052451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 6062451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 6072451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 6082451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 6092451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 610f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 6112451dbcc4f9641df188326215b204b798eb70c46vandwalle 6122451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 6132451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6142451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6152451dbcc4f9641df188326215b204b798eb70c46vandwalle 6162451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA; 6172451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreB; 6182451dbcc4f9641df188326215b204b798eb70c46vandwalle 6192451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 621f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 622f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 6232451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 624b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 625f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 626f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6272451dbcc4f9641df188326215b204b798eb70c46vandwalle 6282451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 6292451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 6302451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 631b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle aRssiBoost = +10; 6322451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 633b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle bRssiBoost = +10; 6342451dbcc4f9641df188326215b204b798eb70c46vandwalle } 635b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 636b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 6372451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6382451dbcc4f9641df188326215b204b798eb70c46vandwalle 6392451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 640b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 641c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + Integer.toString(astatus.rssi24) 642c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + "," + Integer.toString(astatus.rssi5) 6432451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(aRssiBoost) 644c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + b.configKey() + " " 645c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi24) + "," 646c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi5) 6472451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(bRssiBoost) 6482451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 649f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6502451dbcc4f9641df188326215b204b798eb70c46vandwalle 6519f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreA = getScoreFromVisibility(astatus, aRssiBoost, a.configKey()); 6529f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreB = getScoreFromVisibility(bstatus, bRssiBoost, b.configKey()); 6532451dbcc4f9641df188326215b204b798eb70c46vandwalle 6542451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare a and b 6552451dbcc4f9641df188326215b204b798eb70c46vandwalle // If a score is higher then a > b and the order is descending (negative) 6562451dbcc4f9641df188326215b204b798eb70c46vandwalle // If b score is higher then a < b and the order is ascending (positive) 6572451dbcc4f9641df188326215b204b798eb70c46vandwalle order = scoreB - scoreA; 6582451dbcc4f9641df188326215b204b798eb70c46vandwalle 6592451dbcc4f9641df188326215b204b798eb70c46vandwalle // Normalize the order to [-50, +50] 6602451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 50) order = 50; 6612451dbcc4f9641df188326215b204b798eb70c46vandwalle else if (order < -50) order = -50; 6622451dbcc4f9641df188326215b204b798eb70c46vandwalle 6632451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 6642451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 6652451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 6662451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 6672451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 6682451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 6692451dbcc4f9641df188326215b204b798eb70c46vandwalle } 670b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 6712451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 6722451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 6732451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 6742451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 675e67ec726c07410073575473c0f50dc737629f5davandwalle + " scorea=" + scoreA 6762451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 6772451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 6782451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 6792451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 6802451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 681e67ec726c07410073575473c0f50dc737629f5davandwalle + " scoreb=" + scoreB 6822451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 6832451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6842451dbcc4f9641df188326215b204b798eb70c46vandwalle 685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 686f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6884dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6892451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 6902451dbcc4f9641df188326215b204b798eb70c46vandwalle 6912451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6922451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6932451dbcc4f9641df188326215b204b798eb70c46vandwalle 6942451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis : boost RSSI of current configuration before 6952451dbcc4f9641df188326215b204b798eb70c46vandwalle // looking up the score 6962451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != mCurrentConfigurationKey) { 6972451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 698c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle aRssiBoost += 20; 6992451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 700c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle bRssiBoost += 20; 7012451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7022451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7032451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA = getConfigNetworkScore(a, 3000, aRssiBoost); 704ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle int scoreB = getConfigNetworkScore(b, 3000, bRssiBoost); 7052451dbcc4f9641df188326215b204b798eb70c46vandwalle 7062451dbcc4f9641df188326215b204b798eb70c46vandwalle // Both configurations need to have a score for the scorer to be used 7072451dbcc4f9641df188326215b204b798eb70c46vandwalle // ...and the scores need to be different:-) 7082451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 7092451dbcc4f9641df188326215b204b798eb70c46vandwalle || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 710e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 711b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer no-scores: " 712e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + a.configKey() 713e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " " 714e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + b.configKey()); 715e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 7162451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 7172451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7182451dbcc4f9641df188326215b204b798eb70c46vandwalle 7192451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7202451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7212451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA < scoreB) { 7222451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle } if (scoreA > scoreB) { 7242451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle } 726b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 7272451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7282451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7292451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7302451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 731e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreA 7322451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7332451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7342451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7352451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 737e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreB 7382451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + Integer.toString(scoreB - scoreA)); 7392451dbcc4f9641df188326215b204b798eb70c46vandwalle } 740c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 7412451dbcc4f9641df188326215b204b798eb70c46vandwalle // If scoreA > scoreB, the comparison is descending hence the return value is negative 7422451dbcc4f9641df188326215b204b798eb70c46vandwalle return scoreB - scoreA; 7432451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7442451dbcc4f9641df188326215b204b798eb70c46vandwalle 745f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 746f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 747117be607246604e875de62aa8cdd99700b77a2b4vandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 748f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 750453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 751453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 752453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 7532451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 7542451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 755f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 756f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 757f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 758f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 759f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 760f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 761b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 762453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 763f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 764931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 765f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 766f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 767f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 768b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 769453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 770f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 771931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 772f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 773f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7742451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 7752451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 7762451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 777f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7782451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 7792451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 7802451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 7812451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 782f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7832451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 7842451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 785931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7862451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 787f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 788b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 789453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 790b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 791b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 792f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7932451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7942451dbcc4f9641df188326215b204b798eb70c46vandwalle 7952451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 7962451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 797931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 7982451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 7994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 800b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 801b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 802b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 803f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 804f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 805f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 806ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 807f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 808931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 809931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 811931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 8122451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 813b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 814453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 815f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 816f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 817f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 818f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 819931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8202451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 821b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 822453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 823f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 8242451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 825f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 826f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 827f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 828f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 829931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 830f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 831931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 832f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 833931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 834f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8352451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 836b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 837453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 838f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 839f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 840f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 841f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 842f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 843c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 844c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 845c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 846c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 847c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 848c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 849c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 850c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 851c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 852b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 853b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 854b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 855b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 856c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 857c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 858c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 859c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 860c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 861c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 862c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 863c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 864c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 865c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 866c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 867c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 868c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 869c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 870c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 8719f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 8720eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!mWifiConfigStore.enable5GHzPreference) { 8730eebae7334d6129f7ca1344e4b20199794994358vandwalle return 0; 8740eebae7334d6129f7ca1344e4b20199794994358vandwalle } 875e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8760eebae7334d6129f7ca1344e4b20199794994358vandwalle > mWifiConfigStore.bandPreferenceBoostThreshold5) { 877e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 878e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 879e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 880e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 8810eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferenceBoostFactor5 8820eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferenceBoostThreshold5); 883e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 884e67ec726c07410073575473c0f50dc737629f5davandwalle // 50 dB boost is set so as to overcome the hysteresis of +20 plus a difference of 885e67ec726c07410073575473c0f50dc737629f5davandwalle // 25 dB between 2.4 and 5GHz band. This allows jumping from 2.4 to 5GHz 886e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 887e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 888e67ec726c07410073575473c0f50dc737629f5davandwalle } 8899f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 890b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " boost " + boost); 8919f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 892e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 893e67ec726c07410073575473c0f50dc737629f5davandwalle } 894e67ec726c07410073575473c0f50dc737629f5davandwalle 895e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8960eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.bandPreferencePenaltyThreshold5) { 8970eebae7334d6129f7ca1344e4b20199794994358vandwalle // penalize if < -75 8980eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferencePenaltyFactor5 8990eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferencePenaltyThreshold5); 9000eebae7334d6129f7ca1344e4b20199794994358vandwalle return boost; 901e67ec726c07410073575473c0f50dc737629f5davandwalle } 902e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 903e67ec726c07410073575473c0f50dc737629f5davandwalle } 904c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /** 905e67ec726c07410073575473c0f50dc737629f5davandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 906e67ec726c07410073575473c0f50dc737629f5davandwalle * 907e67ec726c07410073575473c0f50dc737629f5davandwalle * Run thru all recent scan result of a WifiConfiguration and select the 908e67ec726c07410073575473c0f50dc737629f5davandwalle * best one. 909c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle */ 910e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 911e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 912b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 913b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 914b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 915b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 916e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9174dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 918b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.scanResultCache == null) { 919b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 920b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 921b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 922e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 924b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle if (current.scanResultCache.size() > 6) { 925b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 926c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 927c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + current.scanResultCache.size() + " --> bail"); 928b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 929931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 930c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 931e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9324dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 933b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 9342f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (current.BSSID != null && !current.BSSID.equals("any")) { 935b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 9362f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("attemptRoam() BSSID is set " 9372f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + current.BSSID + " -> bail"); 938b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 939e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9404dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9414dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 942931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 943c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 9442451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 9454dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 94697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle for (ScanResult b : current.scanResultCache.values()) { 94797b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 94897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 94997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 95097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 951931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if ((b.seen == 0) || (b.BSSID == null) 9520d616ef3bf635dff8722e064c0be842676390ed8vandwalle || ((nowMs - b.seen) > age) 953e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.autoJoinStatus != ScanResult.ENABLED 954e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.numIpConfigFailures > 8) { 9554dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9563a2a3d226881cce8a4e511302231d843b0def303vandwalle } 9574dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 958931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 9594dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 9604dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 9614dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9624dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9634dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 964e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (b.numIpConfigFailures < (a.numIpConfigFailures - 1)) { 965e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // Prefer a BSSID that doesn't have less number of Ip config failures 966e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptRoam: " 967e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + b.BSSID + " rssi=" + b.level + " ipfail=" +b.numIpConfigFailures 968e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + b.frequency 969e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " > " 970e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + a.BSSID + " rssi=" + a.level + " ipfail=" +a.numIpConfigFailures 971e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + a.frequency); 972e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle a = b; 973e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle continue; 974e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 975e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 9762451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 9777806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 978931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9790eebae7334d6129f7ca1344e4b20199794994358vandwalle if (b.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 9800eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisLow; 981c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9820eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 983c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9844dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9857806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 9860eebae7334d6129f7ca1344e4b20199794994358vandwalle if (a.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 987931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9880eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisLow; 989c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9900eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 991c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9924dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9932451dbcc4f9641df188326215b204b798eb70c46vandwalle 99497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 9952451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 9962451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 99797b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 99897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 99997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 100097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 10019f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 10029f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 10039f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 1004e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 10059f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 10064dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1007e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 10089f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 10094dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10104dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 10114dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 1012c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 1013c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1014c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 1015c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 10164dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 1017c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 101897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 101997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 1020c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 1021c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 1022c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 1023c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 10242451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 10252451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 1026c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1027931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 1028c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 10294dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10304dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10313a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 10323a2a3d226881cce8a4e511302231d843b0def303vandwalle if (VDBG) { 10337806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 1034e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 1035e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 10367806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 10377806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 10387806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 10397806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 10407806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 10413a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10424dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10433a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 10444dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10454dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1046931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 10472451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 10482451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10492451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 10502451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10512451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 10522451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10532451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 10542451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 10552451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 10562451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConfigNetworkScore(WifiConfiguration config, int age, int rssiBoost) { 10572451dbcc4f9641df188326215b204b798eb70c46vandwalle 10582451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 1059e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1060b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1061e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 1062e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10631db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10641db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 10651db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (config.scanResultCache == null) { 1066e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1067b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1068e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 1069e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10701db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10712451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10722451dbcc4f9641df188326215b204b798eb70c46vandwalle 10732451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 10742451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 10752451dbcc4f9641df188326215b204b798eb70c46vandwalle 10761db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 10771db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 10782451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 10791db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle for (ScanResult result : config.scanResultCache.values()) { 10802451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < age) { 10812451dbcc4f9641df188326215b204b798eb70c46vandwalle int sc = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 10821db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 10831db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 10842451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10852451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10862451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10871db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 10881db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10891db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1090e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1091e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1092b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1093e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1094e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1095b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1096e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " boost=" + Integer.toString(rssiBoost) 1097e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1098e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1099e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1100e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 11011db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 11022451dbcc4f9641df188326215b204b798eb70c46vandwalle } 11032451dbcc4f9641df188326215b204b798eb70c46vandwalle 11042451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 11058639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson * Set whether connections to untrusted connections are allowed. 11068639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson */ 11078639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson void setAllowUntrustedConnections(boolean allow) { 11088639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson boolean changed = mAllowUntrustedConnections != allow; 11098639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mAllowUntrustedConnections = allow; 11108639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (changed) { 11118639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson attemptAutoJoin(); 11128639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11138639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11148639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 11158639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson private boolean isOpenNetwork(ScanResult result) { 11168639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson return !result.capabilities.contains("WEP") && 11178639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("PSK") && 11188639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !result.capabilities.contains("EAP"); 11198639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 11208639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 11218639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson /** 1122931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 1123931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 1125c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 11261ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = false; 1127b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 11284dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 11298c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 11308c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1131931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1132453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1133453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1134453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1135453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1138931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 113927355a942653264388e909a4276196ee63e57811vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, false); 1140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 11412f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) logDbg("attemptAutoJoin nothing known=" + 11422f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle mWifiConfigStore.getconfiguredNetworkSize()); 1143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 1144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1146931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 114799d385e3b4d34841d6efcfd7cc9bf1d5ae25de14vandwalle String val = mWifiNative.status(true); 1148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 1149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 1151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 1152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1154b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int supplicantNetId = -1; 1155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 1156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 1157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 1158b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId = 0; 1159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 1160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 1161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 1163b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId *= 10; 1164b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId += c - 0x30; 1165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 1166f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 1168f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1169f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 117056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } else if (key.contains("wpa_state=ASSOCIATING") 117156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=ASSOCIATED") 117256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=FOUR_WAY_HANDSHAKE") 117356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=GROUP_KEY_HANDSHAKE")) { 117456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle if (DBG) { 117556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle logDbg("attemptAutoJoin: bail out due to sup state " + key); 117656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } 117756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // After WifiStateMachine ask the supplicant to associate or reconnect 117856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // we might still obtain scan results from supplicant 117956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // however the supplicant state in the mWifiInfo and supplicant state tracker 118056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // are updated when we get the supplicant state change message which can be 118156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // processed after the SCAN_RESULT message, so at this point the framework doesn't 118256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // know that supplicant is ASSOCIATING. 118356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // A good fix for this race condition would be for the WifiStateMachine to add 118456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // a new transient state where it expects to get the supplicant message indicating 118556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // that it started the association process and within which critical operations 118656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // like autojoin should be deleted. 118756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 118856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // This transient state would remove the need for the roam Wathchdog which 118956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // basically does that. 119056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 119156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // At the moment, we just query the supplicant state synchronously with the 119256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // mWifiNative.status() command, which allow us to know that 119356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // supplicant has started association process, even though we didnt yet get the 119456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // SUPPLICANT_STATE_CHANGE message. 119556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle return; 1196f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1197f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1198ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 11997806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1200b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 12017806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1202e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle conf = " current=" + currentConfiguration.configKey(); 1203b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1204b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 12052f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle last = " last=" + lastSelectedConfiguration; 12067806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1207ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1208b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1209b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1210ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1211f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1212453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 12132451dbcc4f9641df188326215b204b798eb70c46vandwalle if (supplicantNetId != currentConfiguration.networkId 12142451dbcc4f9641df188326215b204b798eb70c46vandwalle //https://b.corp.google.com/issue?id=16484607 12152451dbcc4f9641df188326215b204b798eb70c46vandwalle //mark this confition as an error only if the mismatched networkId are valid 12162451dbcc4f9641df188326215b204b798eb70c46vandwalle && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 12172451dbcc4f9641df188326215b204b798eb70c46vandwalle && currentConfiguration.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1218453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 1219b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + Integer.toString(supplicantNetId) + " WifiStateMachine=" 1220453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 1221b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.disconnectCommand(); 1222b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle return; 12238639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } else if (currentConfiguration.ephemeral && (!mAllowUntrustedConnections || 12248639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !mNetworkScoreCache.isScoredNetwork(currentConfiguration.lastSeen()))) { 12258639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // The current connection is untrusted (the framework added it), but we're either 12268639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // no longer allowed to connect to such networks, or the score has been nullified 12278639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // since we connected. Drop the current connection and perform the rest of autojoin. 12288639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson logDbg("attemptAutoJoin() disconnecting from unwanted ephemeral network"); 12298639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mWifiStateMachine.disconnectCommand(); 12308639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson return; 1231453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 1232453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 1233453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 12348c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else { 12358c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID) { 12368c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle // Maybe in the process of associating, skip this attempt 12378c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle return; 12388c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } 1239453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1240453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1241b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1242b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1243931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1244b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1245b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1246b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1247b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1248931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1249931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1250c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 12514dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1252931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1253f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1254e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1255b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1256e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1257e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 125827355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 125927355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 1260931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Avoid networks disabled because of AUTH failure altogether 1261ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1262ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 1263ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 1264e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + config.configKey(true) 1265e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " reason " + config.disableReason); 1266ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1270931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 127127355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 127227355a942653264388e909a4276196ee63e57811vandwalle long now = System.currentTimeMillis(); 127327355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1274931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1275931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1276931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1277931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 12782451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 127927355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 128027355a942653264388e909a4276196ee63e57811vandwalle } else { 12814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1282931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 128327355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 12844dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1285931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 128627355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 128727355a942653264388e909a4276196ee63e57811vandwalle } 128827355a942653264388e909a4276196ee63e57811vandwalle } 128927355a942653264388e909a4276196ee63e57811vandwalle } 129027355a942653264388e909a4276196ee63e57811vandwalle 1291931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 12928c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft 12938c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 12948c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Soft) { 129527355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 1296c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("attemptAutoJoin do not unblacklist due to low visibility " 12974dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 12984dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) 12994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " rssi=(" + config.visibility.rssi24 13004dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.rssi5 13014dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13024dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 130327355a942653264388e909a4276196ee63e57811vandwalle } 13048c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard 13058c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 13068c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Hard) { 1307931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1308931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 130927355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 131027355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 131127355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped soft -> status=" 131227355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1313b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13144dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13154dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13164dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 131727355a942653264388e909a4276196ee63e57811vandwalle } 131827355a942653264388e909a4276196ee63e57811vandwalle } else { 1319c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 132027355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 132127355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped hard -> status=" 132227355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1323b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13244dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13254dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13264dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 132727355a942653264388e909a4276196ee63e57811vandwalle } 132827355a942653264388e909a4276196ee63e57811vandwalle } 132927355a942653264388e909a4276196ee63e57811vandwalle 133027355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 133127355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1332931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 13334dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 13344dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptAutoJoin skip blacklisted -> status=" 13354dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 1336b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13374dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13384dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 13404dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 134127355a942653264388e909a4276196ee63e57811vandwalle continue; 134227355a942653264388e909a4276196ee63e57811vandwalle } 1343f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1344ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 134521bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 134621bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1347ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1348ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1349f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1350f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1351f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 13520eebae7334d6129f7ca1344e4b20199794994358vandwalle boolean isLastSelected = false; 13530eebae7334d6129f7ca1344e4b20199794994358vandwalle if (lastSelectedConfiguration != null && 13540eebae7334d6129f7ca1344e4b20199794994358vandwalle config.configKey().equals(lastSelectedConfiguration)) { 13550eebae7334d6129f7ca1344e4b20199794994358vandwalle isLastSelected = true; 13560eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13570eebae7334d6129f7ca1344e4b20199794994358vandwalle 13580eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.visibility == null) { 13590eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 13600eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13611ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle int boost = config.autoJoinUseAggressiveJoinAttemptThreshold + weakRssiBailCount; 13620eebae7334d6129f7ca1344e4b20199794994358vandwalle if ((config.visibility.rssi5 + boost) 13630eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI 13640eebae7334d6129f7ca1344e4b20199794994358vandwalle && (config.visibility.rssi24 + boost) 13650eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI) { 13660eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 13670eebae7334d6129f7ca1344e4b20199794994358vandwalle logDbg("attemptAutoJoin skip due to low visibility -> status=" 13680eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.autoJoinStatus 13690eebae7334d6129f7ca1344e4b20199794994358vandwalle + " key " + config.configKey(true) + " rssi=" 13700eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.visibility.rssi24 + ", " + config.visibility.rssi5 13710eebae7334d6129f7ca1344e4b20199794994358vandwalle + " num=" + config.visibility.num24 13720eebae7334d6129f7ca1344e4b20199794994358vandwalle + ", " + config.visibility.num5); 13730eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13740eebae7334d6129f7ca1344e4b20199794994358vandwalle 1375c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1376c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 13770eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!isLastSelected) { 13780eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinBailedDueToLowRssi = true; 13791ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle didBailDueToWeakRssi = true; 13808c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 13810eebae7334d6129f7ca1344e4b20199794994358vandwalle } else { 13820eebae7334d6129f7ca1344e4b20199794994358vandwalle // Next time, try to be a bit more aggressive in auto-joining 13830eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.autoJoinUseAggressiveJoinAttemptThreshold 1384dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle < WifiConfiguration.MAX_INITIAL_AUTO_JOIN_RSSI_BOOST 1385dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle && config.autoJoinBailedDueToLowRssi) { 1386dd0c558776fcfba3f754bb0cd6533f2c9c23ec1evandwalle config.autoJoinUseAggressiveJoinAttemptThreshold += 4; 13874dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 13888c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 13890eebae7334d6129f7ca1344e4b20199794994358vandwalle } 1390d30127db46224e45554f8964209221bba8ad41d9vandwalle if (config.numNoInternetAccessReports > 0 1391d30127db46224e45554f8964209221bba8ad41d9vandwalle && !isLastSelected 1392d30127db46224e45554f8964209221bba8ad41d9vandwalle && !config.validatedInternetAccess) { 1393d30127db46224e45554f8964209221bba8ad41d9vandwalle // Avoid autoJoining this network because last time we used it, it didn't 1394d30127db46224e45554f8964209221bba8ad41d9vandwalle // have internet access, and we never manage to validate internet access on this 1395d30127db46224e45554f8964209221bba8ad41d9vandwalle // network configuration 13960eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 1397d30127db46224e45554f8964209221bba8ad41d9vandwalle logDbg("attemptAutoJoin skip candidate due to no InternetAccess " 1398d30127db46224e45554f8964209221bba8ad41d9vandwalle + config.configKey(true) 1399d30127db46224e45554f8964209221bba8ad41d9vandwalle + " num reports " + config.numNoInternetAccessReports); 14009f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 14010eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 14028c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 14038c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1404ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1405e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String cur = ""; 1406e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (candidate != null) { 1407e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle cur = " current candidate " + candidate.configKey(); 1408e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1409e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptAutoJoin trying id=" 1410c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1411b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 1412e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " status=" + config.autoJoinStatus 1413e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + cur); 1414ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1420453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 14214dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1423c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(candidate, config); 14242451dbcc4f9641df188326215b204b798eb70c46vandwalle 14252451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1426c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 14272451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 14282451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 14292451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 14302451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 14312451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 14322451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 14332451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 14342451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 14352451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 14362451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 14372451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 14382f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers -100 " + candidate.configKey() 14392451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 14402451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14412451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14422451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14432451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 14442451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 14452451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 14462451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 14472451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 14482451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 14492451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 14502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 14512f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers +100 " + config.configKey() 14522451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 14532451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14542451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14552451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14562451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14572451dbcc4f9641df188326215b204b798eb70c46vandwalle 1458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1459931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1460f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1462f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1463f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1464f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 14652451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 14668639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // TODO: Consider only running this when we can actually connect to these networks. For now, 14678639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // this is useful for debugging. 1468f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 1469f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1470f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1471f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 1472f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1473f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1474f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1475f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1476f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1477931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 14782451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1479c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1480c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 1481c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle ScanResult untrustedCandidate = null; 14822451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1483c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 1484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 1485c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int rssiBoost = 0; 1486c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1487c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 14888639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (TextUtils.isEmpty(result.SSID) || !result.untrusted || 14898639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson !isOpenNetwork(result)) { 1490c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1491c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 14922451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < 3000) { 1493c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 1494c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics.incrementOrAddUntrusted(result.SSID, 0, 1); 1495c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 1496c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID != null 1497c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && result.BSSID.equals(lastUntrustedBSSID)) { 1498c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Apply a large hysteresis to the untrusted network we are connected to 1499c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle rssiBoost = 25; 1500c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1501c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int score = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 1502c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1503c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1504c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1505c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 1506c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = result; 1507c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1508c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1509c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1510c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " RSSI=" + result.level 1511c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " freq=" + result.frequency 1512c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " score=" + score); 1513c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1514f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1515f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1516f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1517f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1518c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 1519c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID == null 1520c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle || !untrustedCandidate.SSID.equals(lastUntrustedBSSID)) { 1521c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We found a new candidate that we are going to connect to, then 1522c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // increase its connection count 15238c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle mWifiConnectionStatistics. 15248c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle incrementOrAddUntrusted(untrustedCandidate.SSID, 1, 0); 1525c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remember which SSID we are connecting to 1526c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle lastUntrustedBSSID = untrustedCandidate.SSID; 1527c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 15288639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson 15298639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // At this point, we have an untrusted network candidate. 15308639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson // Create the new ephemeral configuration and see if we should switch over 15318639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson if (mAllowUntrustedConnections) { 15328639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate = 15338639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson mWifiConfigStore.wifiConfigurationFromScanResult(untrustedCandidate); 15348639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate.allowedKeyManagement.set(KeyMgmt.NONE); 15358639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson candidate.ephemeral = true; 15368639f6266cb70bf92d1561af43ac2d7b2b97298eJeff Davidson } 1537c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1538c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1539b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 15401ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle long lastUnwanted = 15411ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle System.currentTimeMillis() 15421ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle - mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp; 15431ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (candidate == null 15441ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && lastSelectedConfiguration == null 15451ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && currentConfiguration == null 15461ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && didBailDueToWeakRssi 15471ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle && (mWifiConfigStore.lastUnwantedNetworkDisconnectTimestamp == 0 15481ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle || lastUnwanted > (1000 * 60 * 60 * 24 * 7)) 15491ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle ) { 15501ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // We are bailing out of autojoin although we are seeing a weak configuration, and 15511ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we didn't find another valid candidate 15521ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - we are not connected 15531ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - without a user network selection choice 15541ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // - ConnectivityService has not triggered an unwanted network disconnect 15551ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // on this device for a week (hence most likely there is no SIM card or cellular) 15561ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // If all those conditions are met, then boost the RSSI of the weak networks 15571ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle // that we are seeing so as we will eventually pick one 15581ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount < 10) 15591ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount += 1; 15601ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } else { 15611ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle if (weakRssiBailCount > 0) 15621ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle weakRssiBailCount -= 1; 15631ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle } 15641ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle 1565931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1566931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1567931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1568931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1569e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle int networkDelta = compareNetwork(candidate, lastSelectedConfiguration); 1570b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1571b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1572b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1573b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1574b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1575b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1576b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 15772f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle current = " with current " + currentConfiguration.configKey(); 1578b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1579b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1580b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1581b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1582c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1583b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle && currentConfiguration.isLinked(candidate)) 1584b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1585b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1586b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1587b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 15884dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1589931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1590931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1591931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1592931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1593931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1594b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { 1595b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1596b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1597b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1598b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1599b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1600b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1601b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1602b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1603b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1604b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1605b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1606b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1607b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 16082451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 16092451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 16102451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1611c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1612e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 16139f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 16142f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (candidate.BSSID == null || candidate.BSSID.equals("any")) { 16152f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // First step we selected the configuration we want to connect to 16162f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Second step: Look for the best Scan result for this configuration 16172f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // TODO this algorithm should really be done in one step 16182f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 16192f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle ScanResult roamCandidate = attemptRoam(null, candidate, 3000, null); 16202f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && currentBSSID != null 16212f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 16222f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Sanity, we were already asociated to that candidate 16232f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle roamCandidate = null; 16242f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 16252f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 16262f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // If the configuration hasn't a default BSSID selected, and the best 16272f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 16282f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // supplicant will pick it first 16292f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle candidate.autoJoinBSSID = roamCandidate.BSSID; 16302f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) { 16312f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("AutoJoinController: lock to 5GHz " 16322f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + candidate.autoJoinBSSID 16332f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " RSSI=" + roamCandidate.level 16342f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " freq=" + roamCandidate.frequency); 16352f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 1636448c9536a302c58a79e271b1721c08b8882f800evandwalle } else { 1637448c9536a302c58a79e271b1721c08b8882f800evandwalle // We couldnt find a roam candidate 1638448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.autoJoinBSSID = "any"; 16399f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 16409f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1641448c9536a302c58a79e271b1721c08b8882f800evandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1642448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.networkId, networkSwitchType, candidate); 16434dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1644b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 16454dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1646b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (networkSwitchType == AUTO_JOIN_IDLE) { 1647e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1648931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1649e67ec726c07410073575473c0f50dc737629f5davandwalle ScanResult roamCandidate = attemptRoam(null, currentConfiguration, 3000, 1650e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1651e67ec726c07410073575473c0f50dc737629f5davandwalle /** 1652e67ec726c07410073575473c0f50dc737629f5davandwalle * TODO: (post L initial release) 1653e67ec726c07410073575473c0f50dc737629f5davandwalle * consider handling linked configurations roaming (i.e. extended Roaming) 1654e67ec726c07410073575473c0f50dc737629f5davandwalle * thru the attemptRoam function which makes use of the RSSI roaming threshold. 1655e67ec726c07410073575473c0f50dc737629f5davandwalle * At the moment, extended roaming is only handled thru the attemptAutoJoin() 1656e67ec726c07410073575473c0f50dc737629f5davandwalle * function which compare configurations. 1657e67ec726c07410073575473c0f50dc737629f5davandwalle * 1658e67ec726c07410073575473c0f50dc737629f5davandwalle * The advantage of making use of attemptRoam function is that this function 1659e67ec726c07410073575473c0f50dc737629f5davandwalle * will looks at all the BSSID of each configurations, instead of only looking 1660e67ec726c07410073575473c0f50dc737629f5davandwalle * at WifiConfiguration.visibility which keeps trackonly of the RSSI/band of the 1661e67ec726c07410073575473c0f50dc737629f5davandwalle * two highest BSSIDs. 1662e67ec726c07410073575473c0f50dc737629f5davandwalle */ 1663e67ec726c07410073575473c0f50dc737629f5davandwalle // Attempt linked WifiConfiguration roaming 1664e67ec726c07410073575473c0f50dc737629f5davandwalle /* if (currentConfiguration != null 1665e67ec726c07410073575473c0f50dc737629f5davandwalle && currentConfiguration.linkedConfigurations != null) { 1666e67ec726c07410073575473c0f50dc737629f5davandwalle for (String key : currentConfiguration.linkedConfigurations.keySet()) { 1667e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration link = mWifiConfigStore.getWifiConfiguration(key); 1668e67ec726c07410073575473c0f50dc737629f5davandwalle if (link != null) { 1669e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = attemptRoam(roamCandidate, link, 3000, 1670e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1671e67ec726c07410073575473c0f50dc737629f5davandwalle } 1672e67ec726c07410073575473c0f50dc737629f5davandwalle } 1673e67ec726c07410073575473c0f50dc737629f5davandwalle }*/ 1674e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1675e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1676e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1677e67ec726c07410073575473c0f50dc737629f5davandwalle } 16782f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && mWifiStateMachine.shouldSwitchNetwork(999)) { 1679b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1680b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1681b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1682b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1683b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 16841ec92c57244311c7fca3ab6b244a06c2b2b58902vandwalle + " RSSI=" + roamCandidate.level); 1685b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1686b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1687e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1688e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1689b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1690b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle currentConfiguration.networkId, 1, roamCandidate); 1691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1692f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1693b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 1694f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1695f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1696f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1697