WifiAutoJoinController.java revision e487a4648dd41881e754f1224aaedead78a0777d
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * Copyright (C) 2014 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 22f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 230c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 24c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.net.wifi.*; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 27b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalleimport android.os.Process; 28c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalleimport android.text.TextUtils; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 310c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 32f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 53ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 54ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 56f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 57f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 58c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle public static int mScanResultMaximumAge = 40000; /* milliseconds unit */ 59c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 60453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 61f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 65c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle private WifiConnectionStatistics mWifiConnectionStatistics; 66c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 67c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle /* for debug purpose only : the untrusted SSID we would be connected to if we had VPN */ 68c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle String lastUntrustedBSSID = null; 69c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 70c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /* For debug purpose only: if the scored override a score */ 71c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle boolean didOverride = false; 72c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 73931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose the non-auth failure blacklisting after 8 hours 744dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListHardMilli = 1000 * 60 * 60 * 8; 75931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose some temporary blacklisting after 30 minutes 764dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle private final static long loseBlackListSoftMilli = 1000 * 60 * 30; 7727355a942653264388e909a4276196ee63e57811vandwalle 78b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_IDLE = 0; 79b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_ROAMING = 1; 80b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_EXTENDED_ROAMING = 2; 81b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle public static final int AUTO_JOIN_OUT_OF_NETWORK_ROAMING = 3; 82b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 8397b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle public static final int HIGH_THRESHOLD_MODIFIER = 5; 8497b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle 85f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 86c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle WifiConnectionStatistics st, WifiNative n) { 87f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 88f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 89f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 90f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 91f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 92c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics = st; 9321bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle scoreManager = 9421bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 95f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 96f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 97f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 98f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 99f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 102f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 104f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 105f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 106f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 109ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 110ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 111abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 112ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 113ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 114abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 115ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 116ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 117ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 118ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 119931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 120931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Flush out scan results older than mScanResultMaximumAge 121ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 122931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 125931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle delay = mScanResultMaximumAge; // Something sane 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 127b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle long milli = System.currentTimeMillis(); 128f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 134f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 144be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int addToScanCache(List<ScanResult> scanList) { 145be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown = 0; // Record number of scan results we knew about 146be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiConfiguration associatedConfig = null; 1477b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle boolean didAssociate = false; 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1490c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1500c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 151c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle long nowMs = System.currentTimeMillis(); 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 1531fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (result.SSID == null) continue; 154c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 155c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Make sure we record the last time we saw this result 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 158c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Fetch the previous instance for this result 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 161931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If there was a previous cache result for this BSSID, average the RSSI values 162c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.averageRssi(sr.level, sr.seen, mScanResultMaximumAge); 163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 164c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remove the previous Scan Result - this is not necessary 165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 166e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 167e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 168e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 169e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle WifiKey wkey; 170e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle // Quoted SSIDs are the only one valid at this stage 171e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle try { 172e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 173e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } catch (IllegalArgumentException e) { 174e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg("AutoJoinController: received badly encoded SSID=[" + result.SSID + 175e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle "] ->skipping this network"); 176e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle wkey = null; 177e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 178e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (wkey != null) { 179e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle NetworkKey nkey = new NetworkKey(wkey); 180e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle //if we don't know this scan result then request a score from the scorer 181e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle unknownScanResults.add(nkey); 182e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 183e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 1847b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 1857b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 1867b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 187e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 1887b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is not scored"); 189e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 1900c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 191e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 1927b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle String cap = ""; 1937b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (result.capabilities != null) 1947b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle cap = result.capabilities; 195e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 196e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle logDbg(result.SSID + " " + result.BSSID + " rssi=" 1977b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + result.level + " cap " + cap + " is scored : " + score); 1980c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 199f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 200f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 201e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // scanResultCache.put(result.BSSID, new ScanResult(result)); 202e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle scanResultCache.put(result.BSSID, result); 203be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // Add this BSSID to the scanResultCache of a Saved WifiConfiguration 2047b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = mWifiConfigStore.updateSavedNetworkHistory(result); 205f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 206be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // If not successful, try to associate this BSSID to an existing Saved WifiConfiguration 2077b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (!didAssociate) { 208be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle // We couldn't associate the scan result to a Saved WifiConfiguration 209c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Hence it is untrusted 210c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle result.untrusted = true; 211f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 2121fcf3c6d2b9ed65573e1e7c55fc5a30ebd364c4fYuhao Zheng if (associatedConfig != null && associatedConfig.SSID != null) { 213f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 214f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 2157b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle + associatedConfig.SSID + " with " + result.SSID); 216f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 217be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle mWifiStateMachine.sendMessage( 218be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle WifiStateMachine.CMD_AUTO_SAVE_NETWORK, associatedConfig); 2197b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle didAssociate = true; 220f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2210d616ef3bf635dff8722e064c0be842676390ed8vandwalle } else { 2220d616ef3bf635dff8722e064c0be842676390ed8vandwalle // If the scan result has been blacklisted fir 18 hours -> unblacklist 2230d616ef3bf635dff8722e064c0be842676390ed8vandwalle long now = System.currentTimeMillis(); 2240d616ef3bf635dff8722e064c0be842676390ed8vandwalle if ((now - result.blackListTimestamp) > loseBlackListHardMilli) { 2250d616ef3bf635dff8722e064c0be842676390ed8vandwalle result.setAutoJoinStatus(ScanResult.ENABLED); 2260d616ef3bf635dff8722e064c0be842676390ed8vandwalle } 227f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2287b581f46f6c9bc6edf0edd287d47106712fb2144vandwalle if (didAssociate) { 229be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown++; 230be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 2320c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 2330c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2340c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2350c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 236931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Kick the score manager, we will get updated scores asynchronously 2370c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2380c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 239be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 240f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 241f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 242f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2430888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 244ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 245ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 246ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 247f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 248ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 2492f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message + " stack:" 250ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 251ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 252ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 253ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 254ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 2552f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle Log.e(TAG, message); 256ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 259931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Called directly from WifiStateMachine 260be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int newSupplicantResults(boolean doAutoJoin) { 261be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle int numScanResultsKnown; 262e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle List<ScanResult> scanList = mWifiStateMachine.getScanResultsListNoCopyUnsync(); 263be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle numScanResultsKnown = addToScanCache(scanList); 264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 265be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle if (DBG) { 266be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) 2672f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " known=" + numScanResultsKnown + " " 2689f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle + doAutoJoin); 269be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle } 2707806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (doAutoJoin) { 2717806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle attemptAutoJoin(); 2727806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 274be3095ed758fca076b9ccb9fdae48f7f865c078avandwalle return numScanResultsKnown; 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 278931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 279931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Not used at the moment 280f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 281f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 283f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 284f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 285f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 286f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 287f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 288f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 289f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 290f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 291f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 292f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 293f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 294f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 295931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 296931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * network link quality changed, called directly from WifiTrafficPoller, 297931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * or by listening to Link Quality intent 298931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 303931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 304f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 305f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 306f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 307f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 308b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * Negatve return values from this functions are meaningless per se, just trying to 309b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle * keep them distinct for debug purpose (i.e. -1, -2 etc...) 310931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 311e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle private int compareNetwork(WifiConfiguration candidate, 312e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String lastSelectedConfiguration) { 313b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (candidate == null) 314b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -3; 315b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 316f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 317b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentNetwork == null) { 318c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Return any absurdly high score, if we are not connected there is no current 319c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // network to... 320b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return 1000; 321b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 324b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle return -2; 325f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 326f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 327b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (DBG) { 328e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("compareNetwork will compare " + candidate.configKey() 329e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " with current " + currentNetwork.configKey()); 330b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 331c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(currentNetwork, candidate); 332e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 333e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 334e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 335e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // enableNetwork with disableOthers=true WifiManager API 336e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // As this is a direct user choice, we strongly prefer this configuration, 337e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // hence give +/-100 338e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if ((lastSelectedConfiguration != null) 339e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && currentNetwork.configKey().equals(lastSelectedConfiguration)) { 340e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // currentNetwork is the last selected configuration, 341e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 342e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 343e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by reducing order by -100 344e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order - 100; 345e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 346e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers -100 " + currentNetwork.configKey() 347e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + candidate.configKey() 348e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 349e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 350e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 351e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } else if ((lastSelectedConfiguration != null) 352e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 353e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // candidate is the last selected configuration, 354e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // so keep it above connect choices (+/-60) and 355e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 356e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // by increasing order by +100 357e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle order = order + 100; 358e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (VDBG) { 359e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg(" ...and prefers +100 " + candidate.configKey() 360e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " over " + currentNetwork.configKey() 361e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " because it is the last selected -> " 362e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + Integer.toString(order)); 363e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 364e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 365e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 366ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle return order; 367f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 368f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 369ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 370ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 371ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 372ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 373ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 374ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 37562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 376ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 377ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 378ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 379931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 38062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 381f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 382f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 383c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + " no selected configuration!"); 384f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 385f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 386f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 387e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 388c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory nid=" + netId + 389c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle " no SSID in selected configuration!"); 390e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 391e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 392e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 39362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 394931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable autojoin for this network, 39562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 39627355a942653264388e909a4276196ee63e57811vandwalle selected.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 39762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 398e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle selected.dirty = true; 39962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 400f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 401992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG && userTriggered) { 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 403ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 404f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 405992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(selected.connectChoices.size()) 406992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 407f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 408ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 409992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(netId) 410992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + " uid=" + Integer.toString(selected.creatorUid), true); 411f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 414ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 415ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 4162451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice = 0; 417c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int size = 0; 4189f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 4199f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // Reset the triggered disabled count, because user wanted to connect to this 4209f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // configuration, and we were not. 4219f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableLowRSSI = 0; 4229f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableBadRSSI = 0; 4239f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredWifiDisableNotHighRSSI = 0; 4249f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle selected.numUserTriggeredJoinAttempts++; 4259f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 42662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 42762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 428c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (networks != null) size = networks.size(); 429c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("updateConfigurationHistory found " + size + " networks"); 43062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 43162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 432992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (DBG) { 433992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle logDbg("updateConfigurationHistory got " + config.SSID + " nid=" 434992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle + Integer.toString(config.networkId)); 435992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 436f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 43762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 438ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 43962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 44062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 441f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 4422451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare RSSI values so as to evaluate the strength of the user preference 4432451dbcc4f9641df188326215b204b798eb70c46vandwalle int order = compareWifiConfigurationsRSSI(config, selected, null); 4442451dbcc4f9641df188326215b204b798eb70c46vandwalle 4452451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order < -30) { 4462451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is worse than the visible configuration 4472451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a strong choice so as autojoin cannot override this 4482451dbcc4f9641df188326215b204b798eb70c46vandwalle // for instance, the user has select a network 4492451dbcc4f9641df188326215b204b798eb70c46vandwalle // with 1 bar over a network with 3 bars... 4502451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 60; 4512451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -20) { 4522451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 50; 4532451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < -10) { 4542451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 40; 4552f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else if (order < 20) { 4562451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is about same or has a slightly better RSSI 4572451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence register a weaker choice, here a difference of at least +/-30 in 4582451dbcc4f9641df188326215b204b798eb70c46vandwalle // RSSI comparison triggered by autoJoin will override the choice 4592451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 30; 4602f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } else { 4612451dbcc4f9641df188326215b204b798eb70c46vandwalle // Selected configuration is better than the visible configuration 4622451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence we do not know if the user prefers this configuration strongly 4632451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; 46462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 466931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // The selected configuration was preferred over a recently seen config 467931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // hence remember the user's choice: 468931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // add the recently seen config to the selected's connectChoices array 469ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 470ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 471ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 472ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 473ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 474ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 4750888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 4762451dbcc4f9641df188326215b204b798eb70c46vandwalle + " choice " + Integer.toString(choice)); 477cf5b8eb8a08c45bd4a82f1f4bb789c8a1b08744fvandwalle 4782451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer currentChoice = selected.connectChoices.get(config.configKey(true)); 4792f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (currentChoice != null) { 4802f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // User has made this choice multiple time in a row, so bump up a lot 4812f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle choice += currentChoice.intValue(); 4822451dbcc4f9641df188326215b204b798eb70c46vandwalle } 4832f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Add the visible config to the selected's connect choice list 4842f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle selected.connectChoices.put(config.configKey(true), choice); 485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 48662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 487ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 488ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 48962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 490ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 491931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected from the recently seen config's connectChoice list 49262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 4930888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 4940888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 495931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Remove the selected's linked configuration from the 496931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // recently seen config's connectChoice list 4970888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 4980888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 4990888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 5000888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 50162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 502ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 503ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 5042451dbcc4f9641df188326215b204b798eb70c46vandwalle // We haven't found the configuration that the user just selected in our 5052451dbcc4f9641df188326215b204b798eb70c46vandwalle // scan cache. 5062451dbcc4f9641df188326215b204b798eb70c46vandwalle // In that case we will need a new scan before attempting to connect to this 5072451dbcc4f9641df188326215b204b798eb70c46vandwalle // configuration anyhow and thus we can process the scan results then. 508ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 509ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 51062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 511f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 51262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 51362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 514ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 51562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 51662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 517f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 518f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 519992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle 520931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // TODO: write only if something changed 521992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle if (userTriggered || connect) { 522992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 523992ae00f25a9cc22cf5db3261bd7e72927069cf7vandwalle } 524f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 525f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5262451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConnectChoice(WifiConfiguration source, WifiConfiguration target) { 5272451dbcc4f9641df188326215b204b798eb70c46vandwalle Integer choice = null; 5282451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source == null || target == null) { 5292451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 530f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 531f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5322451dbcc4f9641df188326215b204b798eb70c46vandwalle if (source.connectChoices != null 5332451dbcc4f9641df188326215b204b798eb70c46vandwalle && source.connectChoices.containsKey(target.configKey(true))) { 5342451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = source.connectChoices.get(target.configKey(true)); 5352451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (source.linkedConfigurations != null) { 536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 538f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 539f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 5402451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = config.connectChoices.get(target.configKey(true)); 541f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 542f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5442451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5452451dbcc4f9641df188326215b204b798eb70c46vandwalle 5462451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice == null) { 5472451dbcc4f9641df188326215b204b798eb70c46vandwalle //We didn't find the connect choice 5482451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 5492451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5502451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice.intValue() < 0) { 5512451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = 20; // Compatibility with older files 5522451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5532451dbcc4f9641df188326215b204b798eb70c46vandwalle return choice.intValue(); 5542451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5552451dbcc4f9641df188326215b204b798eb70c46vandwalle } 5562451dbcc4f9641df188326215b204b798eb70c46vandwalle 5572451dbcc4f9641df188326215b204b798eb70c46vandwalle 5589f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle int getScoreFromVisibility(WifiConfiguration.Visibility visibility, int rssiBoost, String dbg) { 5592451dbcc4f9641df188326215b204b798eb70c46vandwalle int rssiBoost5 = 0; 5602451dbcc4f9641df188326215b204b798eb70c46vandwalle int score = 0; 5614dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 5622451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 5632451dbcc4f9641df188326215b204b798eb70c46vandwalle * Boost RSSI value of 5GHz bands iff the base value is better than threshold 5642451dbcc4f9641df188326215b204b798eb70c46vandwalle * This implements band preference where we prefer 5GHz if RSSI5 is good enough, whereas 5652451dbcc4f9641df188326215b204b798eb70c46vandwalle * we prefer 2.4GHz otherwise. 5662451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note that 2.4GHz doesn't need a boost since at equal power the RSSI is typically 567e67ec726c07410073575473c0f50dc737629f5davandwalle * at least 6-10 dB higher 5682451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 5699f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle rssiBoost5 = rssiBoostFrom5GHzRssi(visibility.rssi5, dbg+"->"); 5702451dbcc4f9641df188326215b204b798eb70c46vandwalle 5712451dbcc4f9641df188326215b204b798eb70c46vandwalle // Select which band to use so as to score a 5722451dbcc4f9641df188326215b204b798eb70c46vandwalle if (visibility.rssi5 + rssiBoost5 > visibility.rssi24) { 5732451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 5GHz 5742451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi5 + rssiBoost5 + rssiBoost; 5752451dbcc4f9641df188326215b204b798eb70c46vandwalle } else { 5762451dbcc4f9641df188326215b204b798eb70c46vandwalle // Prefer a's 2.4GHz 5772451dbcc4f9641df188326215b204b798eb70c46vandwalle score = visibility.rssi24 + rssiBoost; 578f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 5792451dbcc4f9641df188326215b204b798eb70c46vandwalle 5802451dbcc4f9641df188326215b204b798eb70c46vandwalle return score; 581f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 582f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 5832451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare WifiConfiguration by RSSI, and return a comparison value in the range [-50, +50] 5842451dbcc4f9641df188326215b204b798eb70c46vandwalle // The result represents "approximately" an RSSI difference measured in dBM 5852451dbcc4f9641df188326215b204b798eb70c46vandwalle // Adjusted with various parameters: 5862451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) current network gets a +15 boost 5872451dbcc4f9641df188326215b204b798eb70c46vandwalle // +) 5GHz signal, if they are strong enough, get a +15 or +25 boost, representing the 5882451dbcc4f9641df188326215b204b798eb70c46vandwalle // fact that at short range we prefer 5GHz band as it is cleaner of interference and 5892451dbcc4f9641df188326215b204b798eb70c46vandwalle // provides for wider channels 5902451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b, 5912451dbcc4f9641df188326215b204b798eb70c46vandwalle String currentConfiguration) { 592f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 5932451dbcc4f9641df188326215b204b798eb70c46vandwalle 5942451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost used so as to favor current config 5952451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 5962451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 5972451dbcc4f9641df188326215b204b798eb70c46vandwalle 5982451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA; 5992451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreB; 6002451dbcc4f9641df188326215b204b798eb70c46vandwalle 6012451dbcc4f9641df188326215b204b798eb70c46vandwalle // Retrieve the visibility 602f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 603f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 604f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 6052451dbcc4f9641df188326215b204b798eb70c46vandwalle // Error visibility wasn't set 606b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations NULL band status!"); 607f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 608f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6092451dbcc4f9641df188326215b204b798eb70c46vandwalle 6102451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis, boost RSSI of current configuration 6112451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != currentConfiguration) { 6122451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(currentConfiguration)) { 613b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle aRssiBoost = +10; 6142451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(currentConfiguration)) { 615b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle bRssiBoost = +10; 6162451dbcc4f9641df188326215b204b798eb70c46vandwalle } 617b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 618b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle 6192451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6202451dbcc4f9641df188326215b204b798eb70c46vandwalle 6212451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 622b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI: " + a.configKey() 623c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + Integer.toString(astatus.rssi24) 624c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + "," + Integer.toString(astatus.rssi5) 6252451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(aRssiBoost) 626c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " " + b.configKey() + " " 627c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi24) + "," 628c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + Integer.toString(bstatus.rssi5) 6292451dbcc4f9641df188326215b204b798eb70c46vandwalle + " boost=" + Integer.toString(bRssiBoost) 6302451dbcc4f9641df188326215b204b798eb70c46vandwalle ); 631f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 6322451dbcc4f9641df188326215b204b798eb70c46vandwalle 6339f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreA = getScoreFromVisibility(astatus, aRssiBoost, a.configKey()); 6349f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle scoreB = getScoreFromVisibility(bstatus, bRssiBoost, b.configKey()); 6352451dbcc4f9641df188326215b204b798eb70c46vandwalle 6362451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare a and b 6372451dbcc4f9641df188326215b204b798eb70c46vandwalle // If a score is higher then a > b and the order is descending (negative) 6382451dbcc4f9641df188326215b204b798eb70c46vandwalle // If b score is higher then a < b and the order is ascending (positive) 6392451dbcc4f9641df188326215b204b798eb70c46vandwalle order = scoreB - scoreA; 6402451dbcc4f9641df188326215b204b798eb70c46vandwalle 6412451dbcc4f9641df188326215b204b798eb70c46vandwalle // Normalize the order to [-50, +50] 6422451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 50) order = 50; 6432451dbcc4f9641df188326215b204b798eb70c46vandwalle else if (order < -50) order = -50; 6442451dbcc4f9641df188326215b204b798eb70c46vandwalle 6452451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 6462451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 6472451dbcc4f9641df188326215b204b798eb70c46vandwalle if (order > 0) { 6482451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; // Ascending 6492451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (order < 0) { 6502451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; // Descending 6512451dbcc4f9641df188326215b204b798eb70c46vandwalle } 652b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsRSSI " + a.configKey() 6532451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 6542451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 6552451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 6562451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 657e67ec726c07410073575473c0f50dc737629f5davandwalle + " scorea=" + scoreA 6582451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 6592451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 6602451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 6612451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 6622451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 663e67ec726c07410073575473c0f50dc737629f5davandwalle + " scoreb=" + scoreB 6642451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + order); 6652451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6662451dbcc4f9641df188326215b204b798eb70c46vandwalle 667f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 668f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 669f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 6704dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 6712451dbcc4f9641df188326215b204b798eb70c46vandwalle int compareWifiConfigurationsWithScorer(WifiConfiguration a, WifiConfiguration b) { 6722451dbcc4f9641df188326215b204b798eb70c46vandwalle 6732451dbcc4f9641df188326215b204b798eb70c46vandwalle int aRssiBoost = 0; 6742451dbcc4f9641df188326215b204b798eb70c46vandwalle int bRssiBoost = 0; 6752451dbcc4f9641df188326215b204b798eb70c46vandwalle 6762451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply Hysteresis : boost RSSI of current configuration before 6772451dbcc4f9641df188326215b204b798eb70c46vandwalle // looking up the score 6782451dbcc4f9641df188326215b204b798eb70c46vandwalle if (null != mCurrentConfigurationKey) { 6792451dbcc4f9641df188326215b204b798eb70c46vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 680c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle aRssiBoost += 20; 6812451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 682c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle bRssiBoost += 20; 6832451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6842451dbcc4f9641df188326215b204b798eb70c46vandwalle } 6852451dbcc4f9641df188326215b204b798eb70c46vandwalle int scoreA = getConfigNetworkScore(a, 3000, aRssiBoost); 686ede507649471f1113e9e1919812115ca5a6bc0c8vandwalle int scoreB = getConfigNetworkScore(b, 3000, bRssiBoost); 6872451dbcc4f9641df188326215b204b798eb70c46vandwalle 6882451dbcc4f9641df188326215b204b798eb70c46vandwalle // Both configurations need to have a score for the scorer to be used 6892451dbcc4f9641df188326215b204b798eb70c46vandwalle // ...and the scores need to be different:-) 6902451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA == WifiNetworkScoreCache.INVALID_NETWORK_SCORE 6912451dbcc4f9641df188326215b204b798eb70c46vandwalle || scoreB == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 692e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle if (VDBG) { 693b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer no-scores: " 694e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + a.configKey() 695e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " " 696e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + b.configKey()); 697e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle } 6982451dbcc4f9641df188326215b204b798eb70c46vandwalle return 0; 6992451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7002451dbcc4f9641df188326215b204b798eb70c46vandwalle 7012451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 7022451dbcc4f9641df188326215b204b798eb70c46vandwalle String prefer = " = "; 7032451dbcc4f9641df188326215b204b798eb70c46vandwalle if (scoreA < scoreB) { 7042451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " < "; 7052451dbcc4f9641df188326215b204b798eb70c46vandwalle } if (scoreA > scoreB) { 7062451dbcc4f9641df188326215b204b798eb70c46vandwalle prefer = " > "; 7072451dbcc4f9641df188326215b204b798eb70c46vandwalle } 708b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurationsWithScorer " + a.configKey() 7092451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + a.visibility.rssi24 7102451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.rssi5 7112451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + a.visibility.num24 7122451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + a.visibility.num5 + ")" 713e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreA 7142451dbcc4f9641df188326215b204b798eb70c46vandwalle + prefer + b.configKey() 7152451dbcc4f9641df188326215b204b798eb70c46vandwalle + " rssi=(" + b.visibility.rssi24 7162451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.rssi5 7172451dbcc4f9641df188326215b204b798eb70c46vandwalle + ") num=(" + b.visibility.num24 7182451dbcc4f9641df188326215b204b798eb70c46vandwalle + "," + b.visibility.num5 + ")" 719e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle + " sc=" + scoreB 7202451dbcc4f9641df188326215b204b798eb70c46vandwalle + " -> " + Integer.toString(scoreB - scoreA)); 7212451dbcc4f9641df188326215b204b798eb70c46vandwalle } 722c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 7232451dbcc4f9641df188326215b204b798eb70c46vandwalle // If scoreA > scoreB, the comparison is descending hence the return value is negative 7242451dbcc4f9641df188326215b204b798eb70c46vandwalle return scoreB - scoreA; 7252451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7262451dbcc4f9641df188326215b204b798eb70c46vandwalle 727f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 728f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 729117be607246604e875de62aa8cdd99700b77a2b4vandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 730f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 731f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 732453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 733453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 734453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 7352451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((a.linkedConfigurations.get(b.configKey(true)) != null) 7362451dbcc4f9641df188326215b204b798eb70c46vandwalle && (b.linkedConfigurations.get(a.configKey(true)) != null)) { 737f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 738f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 739f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 740f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 741f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 742f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 743b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + b.configKey() 744453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 745f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 746931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return 1; // b is of higher priority - ascending 747f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 748f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 750b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations ephemeral and prefers " + a.configKey() 751453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 752f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 753931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle return -1; // a is of higher priority - descending 754f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 755f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7562451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply RSSI, in the range [-5, +5] 7572451dbcc4f9641df188326215b204b798eb70c46vandwalle // after band adjustment, +n difference roughly corresponds to +10xn dBm 7582451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + compareWifiConfigurationsRSSI(a, b, mCurrentConfigurationKey); 759f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7602451dbcc4f9641df188326215b204b798eb70c46vandwalle // If the configurations are not linked, compare by user's choice, only a 7612451dbcc4f9641df188326215b204b798eb70c46vandwalle // very high RSSI difference can then override the choice 7622451dbcc4f9641df188326215b204b798eb70c46vandwalle if (!linked) { 7632451dbcc4f9641df188326215b204b798eb70c46vandwalle int choice; 764f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7652451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(a, b); 7662451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 767931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7682451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - choice; 769f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 770b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + a.configKey() 771453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 772b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " due to user choice of " + choice 773b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order -> " + Integer.toString(order)); 774f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 7752451dbcc4f9641df188326215b204b798eb70c46vandwalle } 7762451dbcc4f9641df188326215b204b798eb70c46vandwalle 7772451dbcc4f9641df188326215b204b798eb70c46vandwalle choice = getConnectChoice(b, a); 7782451dbcc4f9641df188326215b204b798eb70c46vandwalle if (choice > 0) { 779931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 7802451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + choice; 7814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 782b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers " + b.configKey() + " over " 783b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + a.configKey() + " due to user choice of " + choice 784b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " order ->" + Integer.toString(order)); 785f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 786f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 787f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 788ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 789f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 790931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // We don't know anything - pick the last seen i.e. K behavior 791931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // we should do this only for recently picked configurations 792f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 793931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of higher priority - descending 7942451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 795b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers -1 " + a.configKey() + " over " 796453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 797f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 798f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 799f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 800f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 801931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // a is of lower priority - ascending 8022451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 803b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" compareWifiConfigurations prefers +1 " + b.configKey() + " over " 804453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 805f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 8062451dbcc4f9641df188326215b204b798eb70c46vandwalle order = 1; 807f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 808f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 809f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 811931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if (order > 0) { 812f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 813931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } else if (order < 0) { 814f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 815931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle } 816f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 8172451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 818b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("compareWifiConfigurations: " + a.configKey() + sorder 819453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 820f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 821f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 822f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 823f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 824f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 825c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle boolean isBadCandidate(int rssi5, int rssi24) { 826c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle return (rssi5 < -80 && rssi24 < -90); 827c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 828c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 829c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int compareWifiConfigurationsTop(WifiConfiguration a, WifiConfiguration b) { 830c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int scorerOrder = compareWifiConfigurationsWithScorer(a, b); 831c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurations(a, b); 832c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 833c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder * order < 0) { 834b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (VDBG) { 835b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" -> compareWifiConfigurationsTop: " + 836b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle "scorer override " + scorerOrder + " " + order); 837b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 838c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // For debugging purpose, remember that an override happened 839c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // during that autojoin Attempt 840c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = true; 841c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle a.numScorerOverride++; 842c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle b.numScorerOverride++; 843c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 844c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 845c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle if (scorerOrder != 0) { 846c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If the scorer came up with a result then use the scorer's result, else use 847c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // the order provided by the base comparison function 848c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle order = scorerOrder; 849c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 850c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle return order; 851c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle } 852c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle 8539f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle public int rssiBoostFrom5GHzRssi(int rssi, String dbg) { 8540eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!mWifiConfigStore.enable5GHzPreference) { 8550eebae7334d6129f7ca1344e4b20199794994358vandwalle return 0; 8560eebae7334d6129f7ca1344e4b20199794994358vandwalle } 857e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8580eebae7334d6129f7ca1344e4b20199794994358vandwalle > mWifiConfigStore.bandPreferenceBoostThreshold5) { 859e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 2 dB for each point 860e67ec726c07410073575473c0f50dc737629f5davandwalle // Start boosting at -65 861e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 20 if above -55 862e67ec726c07410073575473c0f50dc737629f5davandwalle // Boost by 40 if abore -45 8630eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferenceBoostFactor5 8640eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferenceBoostThreshold5); 865e67ec726c07410073575473c0f50dc737629f5davandwalle if (boost > 50) { 866e67ec726c07410073575473c0f50dc737629f5davandwalle // 50 dB boost is set so as to overcome the hysteresis of +20 plus a difference of 867e67ec726c07410073575473c0f50dc737629f5davandwalle // 25 dB between 2.4 and 5GHz band. This allows jumping from 2.4 to 5GHz 868e67ec726c07410073575473c0f50dc737629f5davandwalle // consistently 869e67ec726c07410073575473c0f50dc737629f5davandwalle boost = 50; 870e67ec726c07410073575473c0f50dc737629f5davandwalle } 8719f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle if (VDBG && dbg != null) { 872b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" " + dbg + ": rssi5 " + rssi + " boost " + boost); 8739f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 874e67ec726c07410073575473c0f50dc737629f5davandwalle return boost; 875e67ec726c07410073575473c0f50dc737629f5davandwalle } 876e67ec726c07410073575473c0f50dc737629f5davandwalle 877e67ec726c07410073575473c0f50dc737629f5davandwalle if (rssi 8780eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.bandPreferencePenaltyThreshold5) { 8790eebae7334d6129f7ca1344e4b20199794994358vandwalle // penalize if < -75 8800eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = mWifiConfigStore.bandPreferencePenaltyFactor5 8810eebae7334d6129f7ca1344e4b20199794994358vandwalle *(rssi - mWifiConfigStore.bandPreferencePenaltyThreshold5); 8820eebae7334d6129f7ca1344e4b20199794994358vandwalle return boost; 883e67ec726c07410073575473c0f50dc737629f5davandwalle } 884e67ec726c07410073575473c0f50dc737629f5davandwalle return 0; 885e67ec726c07410073575473c0f50dc737629f5davandwalle } 886c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle /** 887e67ec726c07410073575473c0f50dc737629f5davandwalle * attemptRoam() function implements the core of the same SSID switching algorithm 888e67ec726c07410073575473c0f50dc737629f5davandwalle * 889e67ec726c07410073575473c0f50dc737629f5davandwalle * Run thru all recent scan result of a WifiConfiguration and select the 890e67ec726c07410073575473c0f50dc737629f5davandwalle * best one. 891c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle */ 892e67ec726c07410073575473c0f50dc737629f5davandwalle public ScanResult attemptRoam(ScanResult a, 893e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration current, int age, String currentBSSID) { 894b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current == null) { 895b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 896b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam not associated"); 897b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 898e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 8994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 900b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (current.scanResultCache == null) { 901b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 902b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("attemptRoam no scan cache"); 903b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 904e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9054dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 906b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle if (current.scanResultCache.size() > 6) { 907b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) { 908c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle logDbg("attemptRoam scan cache size " 909c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + current.scanResultCache.size() + " --> bail"); 910b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 911931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Implement same SSID roaming only for configurations 912c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // that have less than 4 BSSIDs 913e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9144dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 915b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 9162f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (current.BSSID != null && !current.BSSID.equals("any")) { 917b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 9182f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("attemptRoam() BSSID is set " 9192f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + current.BSSID + " -> bail"); 920b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 921e67ec726c07410073575473c0f50dc737629f5davandwalle return a; 9224dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9234dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 924931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Determine which BSSID we want to associate to, taking account 925c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle // relative strength of 5 and 2.4 GHz BSSIDs 9262451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 9274dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 92897b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle for (ScanResult b : current.scanResultCache.values()) { 92997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost5 = 0; 93097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost5 = 0; 93197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int bRssiBoost = 0; 93297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle int aRssiBoost = 0; 933931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle if ((b.seen == 0) || (b.BSSID == null) 9340d616ef3bf635dff8722e064c0be842676390ed8vandwalle || ((nowMs - b.seen) > age) 935e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.autoJoinStatus != ScanResult.ENABLED 936e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle || b.numIpConfigFailures > 8) { 9374dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9383a2a3d226881cce8a4e511302231d843b0def303vandwalle } 9394dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 940931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Pick first one 9414dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (a == null) { 9424dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle a = b; 9434dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle continue; 9444dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9454dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 946e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (b.numIpConfigFailures < (a.numIpConfigFailures - 1)) { 947e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle // Prefer a BSSID that doesn't have less number of Ip config failures 948e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptRoam: " 949e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + b.BSSID + " rssi=" + b.level + " ipfail=" +b.numIpConfigFailures 950e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + b.frequency 951e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " > " 952e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + a.BSSID + " rssi=" + a.level + " ipfail=" +a.numIpConfigFailures 953e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " freq=" + a.frequency); 954e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle a = b; 955e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle continue; 956e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 957e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle 9582451dbcc4f9641df188326215b204b798eb70c46vandwalle // Apply hysteresis: we favor the currentBSSID by giving it a boost 9597806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(b.BSSID)) { 960931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9610eebae7334d6129f7ca1344e4b20199794994358vandwalle if (b.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 9620eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisLow; 963c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9640eebae7334d6129f7ca1344e4b20199794994358vandwalle bRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 965c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9677806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null && currentBSSID.equals(a.BSSID)) { 9680eebae7334d6129f7ca1344e4b20199794994358vandwalle if (a.level <= mWifiConfigStore.bandPreferencePenaltyThreshold5) { 969931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reduce the benefit of hysteresis if RSSI <= -75 9700eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisLow; 971c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } else { 9720eebae7334d6129f7ca1344e4b20199794994358vandwalle aRssiBoost = mWifiConfigStore.associatedHysteresisHigh; 973c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9744dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9752451dbcc4f9641df188326215b204b798eb70c46vandwalle 97697b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Favor 5GHz: give a boost to 5GHz BSSIDs, with a slightly progressive curve 9772451dbcc4f9641df188326215b204b798eb70c46vandwalle // Boost the BSSID if it is on 5GHz, above a threshold 9782451dbcc4f9641df188326215b204b798eb70c46vandwalle // But penalize it if it is on 5GHz and below threshold 97997b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // 98097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // With he current threshold values, 5GHz network with RSSI above -55 98197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // Are given a boost of 30DB which is enough to overcome the current BSSID 98297b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle // hysteresis (+14) plus 2.4/5 GHz signal strength difference on most cases 9839f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // 9849f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // The "current BSSID" Boost must be added to the BSSID's level so as to introduce\ 9859f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle // soem amount of hysteresis 986e67ec726c07410073575473c0f50dc737629f5davandwalle if (b.is5GHz()) { 9879f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle bRssiBoost5 = rssiBoostFrom5GHzRssi(b.level + bRssiBoost, b.BSSID); 9884dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 989e67ec726c07410073575473c0f50dc737629f5davandwalle if (a.is5GHz()) { 9909f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle aRssiBoost5 = rssiBoostFrom5GHzRssi(a.level + aRssiBoost, a.BSSID); 9914dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 9924dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 9934dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (VDBG) { 994c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle String comp = " < "; 995c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 996c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle comp = " > "; 997c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 9984dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptRoam: " 999c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + b.BSSID + " rssi=" + b.level + " boost=" + Integer.toString(bRssiBoost) 100097b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + "/" + Integer.toString(bRssiBoost5) + " freq=" + b.frequency 100197b9c4fef6e372d1f19b333c7a67ff27ef80baf0vandwalle + comp 1002c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + a.BSSID + " rssi=" + a.level + " boost=" + Integer.toString(aRssiBoost) 1003c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + "/" + Integer.toString(aRssiBoost5) + " freq=" + a.frequency); 1004c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle } 1005c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle 10062451dbcc4f9641df188326215b204b798eb70c46vandwalle // Compare the RSSIs after applying the hysteresis boost and the 5GHz 10072451dbcc4f9641df188326215b204b798eb70c46vandwalle // boost if applicable 1008c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle if (b.level + bRssiBoost + bRssiBoost5 > a.level +aRssiBoost + aRssiBoost5) { 1009931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // b is the better BSSID 1010c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle a = b; 10114dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10124dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10133a2a3d226881cce8a4e511302231d843b0def303vandwalle if (a != null) { 10143a2a3d226881cce8a4e511302231d843b0def303vandwalle if (VDBG) { 10157806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle StringBuilder sb = new StringBuilder(); 1016e67ec726c07410073575473c0f50dc737629f5davandwalle sb.append("attemptRoam: " + current.configKey() + 1017e67ec726c07410073575473c0f50dc737629f5davandwalle " Found " + a.BSSID + " rssi=" + a.level + " freq=" + a.frequency); 10187806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentBSSID != null) { 10197806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append(" Current: " + currentBSSID); 10207806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 10217806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle sb.append("\n"); 10227806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle logDbg(sb.toString()); 10233a2a3d226881cce8a4e511302231d843b0def303vandwalle } 10244dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10253a2a3d226881cce8a4e511302231d843b0def303vandwalle return a; 10264dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 10274dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1028931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 10292451dbcc4f9641df188326215b204b798eb70c46vandwalle * getNetworkScore() 10302451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10312451dbcc4f9641df188326215b204b798eb70c46vandwalle * if scorer is present, get the network score of a WifiConfiguration 10322451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10332451dbcc4f9641df188326215b204b798eb70c46vandwalle * Note: this should be merge with setVisibility 10342451dbcc4f9641df188326215b204b798eb70c46vandwalle * 10352451dbcc4f9641df188326215b204b798eb70c46vandwalle * @param config 10362451dbcc4f9641df188326215b204b798eb70c46vandwalle * @return score 10372451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 10382451dbcc4f9641df188326215b204b798eb70c46vandwalle int getConfigNetworkScore(WifiConfiguration config, int age, int rssiBoost) { 10392451dbcc4f9641df188326215b204b798eb70c46vandwalle 10402451dbcc4f9641df188326215b204b798eb70c46vandwalle if (mNetworkScoreCache == null) { 1041e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1042b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1043e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scorer, hence no scores"); 1044e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10451db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10461db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 10471db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (config.scanResultCache == null) { 1048e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1049b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1050e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no scan cache"); 1051e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 10521db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10532451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10542451dbcc4f9641df188326215b204b798eb70c46vandwalle 10552451dbcc4f9641df188326215b204b798eb70c46vandwalle // Get current date 10562451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 10572451dbcc4f9641df188326215b204b798eb70c46vandwalle 10581db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle int startScore = -10000; 10591db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle 10602451dbcc4f9641df188326215b204b798eb70c46vandwalle // Run thru all cached scan results 10611db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle for (ScanResult result : config.scanResultCache.values()) { 10622451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < age) { 10632451dbcc4f9641df188326215b204b798eb70c46vandwalle int sc = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 10641db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (sc > startScore) { 10651db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = sc; 10662451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10672451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10682451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10691db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle if (startScore == -10000) { 10701db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle startScore = WifiNetworkScoreCache.INVALID_NETWORK_SCORE; 10711db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle } 1072e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (VDBG) { 1073e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle if (startScore == WifiNetworkScoreCache.INVALID_NETWORK_SCORE) { 1074b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1075e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " -> no available score"); 1076e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } else { 1077b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg(" getConfigNetworkScore for " + config.configKey() 1078e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " boost=" + Integer.toString(rssiBoost) 1079e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle + " score = " + Integer.toString(startScore)); 1080e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1081e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle } 1082e6574ec7b6b2e7a678da7f77bdaaf31463852b2fvandwalle 10831db63db890fcb9051f402fdfd449eb0b80e2053cvandwalle return startScore; 10842451dbcc4f9641df188326215b204b798eb70c46vandwalle } 10852451dbcc4f9641df188326215b204b798eb70c46vandwalle 10862451dbcc4f9641df188326215b204b798eb70c46vandwalle /** 1087931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * attemptAutoJoin() function implements the core of the a network switching algorithm 1088931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1089f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 1090c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle didOverride = false; 1091b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle int networkSwitchType = AUTO_JOIN_IDLE; 10924dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 10938c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 10948c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1095931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reset the currentConfiguration Key, and set it only if WifiStateMachine and 1096453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 1097453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 1098453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 1099453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1100f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 1101f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1102931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Obtain the subset of recently seen networks 110327355a942653264388e909a4276196ee63e57811vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, false); 1104f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 11052f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) logDbg("attemptAutoJoin nothing known=" + 11062f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle mWifiConfigStore.getconfiguredNetworkSize()); 1107f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 1108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1110931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Find the currently connected network: ask the supplicant directly 111199d385e3b4d34841d6efcfd7cc9bf1d5ae25de14vandwalle String val = mWifiNative.status(true); 1112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 1113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 1115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 1116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1118b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int supplicantNetId = -1; 1119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 1120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 1121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 1122b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId = 0; 1123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 1124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 1125f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 1127b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId *= 10; 1128b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle supplicantNetId += c - 0x30; 1129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 1130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 1132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1133f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 113456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } else if (key.contains("wpa_state=ASSOCIATING") 113556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=ASSOCIATED") 113656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=FOUR_WAY_HANDSHAKE") 113756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle || key.contains("wpa_state=GROUP_KEY_HANDSHAKE")) { 113856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle if (DBG) { 113956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle logDbg("attemptAutoJoin: bail out due to sup state " + key); 114056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle } 114156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // After WifiStateMachine ask the supplicant to associate or reconnect 114256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // we might still obtain scan results from supplicant 114356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // however the supplicant state in the mWifiInfo and supplicant state tracker 114456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // are updated when we get the supplicant state change message which can be 114556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // processed after the SCAN_RESULT message, so at this point the framework doesn't 114656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // know that supplicant is ASSOCIATING. 114756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // A good fix for this race condition would be for the WifiStateMachine to add 114856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // a new transient state where it expects to get the supplicant message indicating 114956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // that it started the association process and within which critical operations 115056d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // like autojoin should be deleted. 115156d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 115256d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // This transient state would remove the need for the roam Wathchdog which 115356d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // basically does that. 115456d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle 115556d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // At the moment, we just query the supplicant state synchronously with the 115656d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // mWifiNative.status() command, which allow us to know that 115756d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // supplicant has started association process, even though we didnt yet get the 115856d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle // SUPPLICANT_STATE_CHANGE message. 115956d0178183460eed9afbd85e5c0d215e27d5f5bcvandwalle return; 1160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1162ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 11637806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle String conf = ""; 1164b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String last = ""; 11657806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle if (currentConfiguration != null) { 1166e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle conf = " current=" + currentConfiguration.configKey(); 1167b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1168b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (lastSelectedConfiguration != null) { 11692f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle last = " last=" + lastSelectedConfiguration; 11707806f8c800754da0f76d7a0c1a6a590381dac7a8vandwalle } 1171ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 1172b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + conf + last 1173b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " ---> suppNetId=" + Integer.toString(supplicantNetId)); 1174ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1175f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1176453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 11772451dbcc4f9641df188326215b204b798eb70c46vandwalle if (supplicantNetId != currentConfiguration.networkId 11782451dbcc4f9641df188326215b204b798eb70c46vandwalle //https://b.corp.google.com/issue?id=16484607 11792451dbcc4f9641df188326215b204b798eb70c46vandwalle //mark this confition as an error only if the mismatched networkId are valid 11802451dbcc4f9641df188326215b204b798eb70c46vandwalle && supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID 11812451dbcc4f9641df188326215b204b798eb70c46vandwalle && currentConfiguration.networkId != WifiConfiguration.INVALID_NETWORK_ID) { 1182453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 1183b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + Integer.toString(supplicantNetId) + " WifiStateMachine=" 1184453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 1185b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle mWifiStateMachine.disconnectCommand(); 1186b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle return; 1187453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 1188453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 1189453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 11908c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else { 11918c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (supplicantNetId != WifiConfiguration.INVALID_NETWORK_ID) { 11928c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle // Maybe in the process of associating, skip this attempt 11938c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle return; 11948c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } 1195453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 1196453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 1197b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle int currentNetId = -1; 1198b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (currentConfiguration != null) { 1199931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If we are associated to a configuration, it will 1200b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle // be compared thru the compareNetwork function 1201b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle currentNetId = currentConfiguration.networkId; 1202b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle } 1203b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle 1204931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1205931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Run thru all visible configurations without looking at the one we 1206c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle * are currently associated to 12074dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle * select Best Network candidate from known WifiConfigurations 1208931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1209f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 1210e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 1211b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle continue; 1212e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 1213e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 121427355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 121527355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) { 1216931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Avoid networks disabled because of AUTH failure altogether 1217ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1218ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 1219ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 1220e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + config.configKey(true) 1221e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " reason " + config.disableReason); 1222ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1223f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1224f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1225f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1226e487a4648dd41881e754f1224aaedead78a0777dSky Faber if (config.userApproved == WifiConfiguration.USER_PENDING || 1227e487a4648dd41881e754f1224aaedead78a0777dSky Faber config.userApproved == WifiConfiguration.USER_BANNED) { 1228e487a4648dd41881e754f1224aaedead78a0777dSky Faber if (DBG) { 1229e487a4648dd41881e754f1224aaedead78a0777dSky Faber logDbg("attemptAutoJoin skip candidate due to user approval status " 1230e487a4648dd41881e754f1224aaedead78a0777dSky Faber + WifiConfiguration.userApprovedAsString(config.userApproved) + " key " 1231e487a4648dd41881e754f1224aaedead78a0777dSky Faber + config.configKey(true)); 1232e487a4648dd41881e754f1224aaedead78a0777dSky Faber } 1233e487a4648dd41881e754f1224aaedead78a0777dSky Faber continue; 1234e487a4648dd41881e754f1224aaedead78a0777dSky Faber } 1235e487a4648dd41881e754f1224aaedead78a0777dSky Faber 1236931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to un-blacklist based on elapsed time 123727355a942653264388e909a4276196ee63e57811vandwalle if (config.blackListTimestamp > 0) { 123827355a942653264388e909a4276196ee63e57811vandwalle long now = System.currentTimeMillis(); 123927355a942653264388e909a4276196ee63e57811vandwalle if (now < config.blackListTimestamp) { 1240931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1241931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * looks like there was a change in the system clock since we black listed, and 1242931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * timestamp is not meaningful anymore, hence lose it. 1243931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * this event should be rare enough so that we still want to lose the black list 12442451dbcc4f9641df188326215b204b798eb70c46vandwalle */ 124527355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 124627355a942653264388e909a4276196ee63e57811vandwalle } else { 12474dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if ((now - config.blackListTimestamp) > loseBlackListHardMilli) { 1248931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Reenable it after 18 hours, i.e. next day 124927355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 12504dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } else if ((now - config.blackListTimestamp) > loseBlackListSoftMilli) { 1251931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Lose blacklisting due to bad link 125227355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 8); 125327355a942653264388e909a4276196ee63e57811vandwalle } 125427355a942653264388e909a4276196ee63e57811vandwalle } 125527355a942653264388e909a4276196ee63e57811vandwalle } 125627355a942653264388e909a4276196ee63e57811vandwalle 1257931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Try to unblacklist based on good visibility 12588c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Soft 12598c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 12608c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Soft) { 126127355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 1262c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("attemptAutoJoin do not unblacklist due to low visibility " 12634dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 12644dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " key " + config.configKey(true) 12654dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " rssi=(" + config.visibility.rssi24 12664dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.rssi5 12674dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12684dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 126927355a942653264388e909a4276196ee63e57811vandwalle } 12708c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle } else if (config.visibility.rssi5 < mWifiConfigStore.thresholdUnblacklistThreshold5Hard 12718c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle && config.visibility.rssi24 12728c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle < mWifiConfigStore.thresholdUnblacklistThreshold24Hard) { 1273931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // If the network is simply temporary disabled, don't allow reconnect until 1274931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // RSSI becomes good enough 127527355a942653264388e909a4276196ee63e57811vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 1); 127627355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 127727355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped soft -> status=" 127827355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1279b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 12804dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 12814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12824dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 128327355a942653264388e909a4276196ee63e57811vandwalle } 128427355a942653264388e909a4276196ee63e57811vandwalle } else { 1285c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle config.setAutoJoinStatus(config.autoJoinStatus - 3); 128627355a942653264388e909a4276196ee63e57811vandwalle if (DBG) { 128727355a942653264388e909a4276196ee63e57811vandwalle logDbg("attemptAutoJoin good candidate seen, bumped hard -> status=" 128827355a942653264388e909a4276196ee63e57811vandwalle + config.autoJoinStatus 1289b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 12904dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 12914dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 12924dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 129327355a942653264388e909a4276196ee63e57811vandwalle } 129427355a942653264388e909a4276196ee63e57811vandwalle } 129527355a942653264388e909a4276196ee63e57811vandwalle 129627355a942653264388e909a4276196ee63e57811vandwalle if (config.autoJoinStatus >= 129727355a942653264388e909a4276196ee63e57811vandwalle WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 1298931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Network is blacklisted, skip 12994dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle if (DBG) { 13004dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle logDbg("attemptAutoJoin skip blacklisted -> status=" 13014dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.autoJoinStatus 1302b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " " + config.configKey(true) + " rssi=(" 13034dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + config.visibility.rssi24 + "," + config.visibility.rssi5 13044dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + ") num=(" + config.visibility.num24 13054dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + "," + config.visibility.num5 + ")"); 13064dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 130727355a942653264388e909a4276196ee63e57811vandwalle continue; 130827355a942653264388e909a4276196ee63e57811vandwalle } 1309f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 1310ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 131121bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle logDbg("attemptAutoJoin skip current candidate " 131221bc54cb37a0085b1c909cb4d55ebb12a2facefbvandwalle + Integer.toString(currentNetId) 1313ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 1314ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 1316f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 13180eebae7334d6129f7ca1344e4b20199794994358vandwalle boolean isLastSelected = false; 13190eebae7334d6129f7ca1344e4b20199794994358vandwalle if (lastSelectedConfiguration != null && 13200eebae7334d6129f7ca1344e4b20199794994358vandwalle config.configKey().equals(lastSelectedConfiguration)) { 13210eebae7334d6129f7ca1344e4b20199794994358vandwalle isLastSelected = true; 13220eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13230eebae7334d6129f7ca1344e4b20199794994358vandwalle 13240eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.visibility == null) { 13250eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 13260eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13270eebae7334d6129f7ca1344e4b20199794994358vandwalle int boost = config.autoJoinUseAggressiveJoinAttemptThreshold; 13280eebae7334d6129f7ca1344e4b20199794994358vandwalle if ((config.visibility.rssi5 + boost) 13290eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin5RSSI 13300eebae7334d6129f7ca1344e4b20199794994358vandwalle && (config.visibility.rssi24 + boost) 13310eebae7334d6129f7ca1344e4b20199794994358vandwalle < mWifiConfigStore.thresholdInitialAutoJoinAttemptMin24RSSI) { 13320eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 13330eebae7334d6129f7ca1344e4b20199794994358vandwalle logDbg("attemptAutoJoin skip due to low visibility -> status=" 13340eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.autoJoinStatus 13350eebae7334d6129f7ca1344e4b20199794994358vandwalle + " key " + config.configKey(true) + " rssi=" 13360eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.visibility.rssi24 + ", " + config.visibility.rssi5 13370eebae7334d6129f7ca1344e4b20199794994358vandwalle + " num=" + config.visibility.num24 13380eebae7334d6129f7ca1344e4b20199794994358vandwalle + ", " + config.visibility.num5); 13390eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13400eebae7334d6129f7ca1344e4b20199794994358vandwalle 1341c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // Don't try to autojoin a network that is too far but 1342c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // If that configuration is a user's choice however, try anyway 13430eebae7334d6129f7ca1344e4b20199794994358vandwalle if (!isLastSelected) { 13440eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinBailedDueToLowRssi = true; 13458c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 13460eebae7334d6129f7ca1344e4b20199794994358vandwalle } else { 13470eebae7334d6129f7ca1344e4b20199794994358vandwalle // Next time, try to be a bit more aggressive in auto-joining 13480eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.autoJoinUseAggressiveJoinAttemptThreshold 13490eebae7334d6129f7ca1344e4b20199794994358vandwalle < WifiConfiguration.MAX_INITIAL_AUTO_JOIN_RSSI_BOOST) { 13500eebae7334d6129f7ca1344e4b20199794994358vandwalle config.autoJoinUseAggressiveJoinAttemptThreshold += 2; 13514dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 13528c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 13530eebae7334d6129f7ca1344e4b20199794994358vandwalle } 13540eebae7334d6129f7ca1344e4b20199794994358vandwalle if (config.noInternetAccess && !isLastSelected) { 13550eebae7334d6129f7ca1344e4b20199794994358vandwalle // Avoid autojoining this network because last time we used it, it didn't 13560eebae7334d6129f7ca1344e4b20199794994358vandwalle // have internet access 13570eebae7334d6129f7ca1344e4b20199794994358vandwalle if (DBG) { 13580eebae7334d6129f7ca1344e4b20199794994358vandwalle logDbg("attemptAutoJoin skip candidate due to noInternetAccess flag " 13590eebae7334d6129f7ca1344e4b20199794994358vandwalle + config.configKey(true)); 13609f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 13610eebae7334d6129f7ca1344e4b20199794994358vandwalle continue; 13628c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 13638c9088d11880553458f09377cc60d6eb7e66747bvandwalle 1364ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 1365e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle String cur = ""; 1366e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle if (candidate != null) { 1367e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle cur = " current candidate " + candidate.configKey(); 1368e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle } 1369e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle logDbg("attemptAutoJoin trying id=" 1370c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + Integer.toString(config.networkId) + " " 1371b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + config.configKey(true) 1372e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + " status=" + config.autoJoinStatus 1373e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle + cur); 1374ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 1375f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1376f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 1377f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1378f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 1379f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 1380453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 13814dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle + " with " + config.configKey()); 1382f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1383c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle int order = compareWifiConfigurationsTop(candidate, config); 13842451dbcc4f9641df188326215b204b798eb70c46vandwalle 13852451dbcc4f9641df188326215b204b798eb70c46vandwalle // The lastSelectedConfiguration is the configuration the user has manually selected 1386c290d8dff6172d5fde7b9dfd74d3a20785dab246vandwalle // thru WifiPicker, or that a 3rd party app asked us to connect to via the 13872451dbcc4f9641df188326215b204b798eb70c46vandwalle // enableNetwork with disableOthers=true WifiManager API 13882451dbcc4f9641df188326215b204b798eb70c46vandwalle // As this is a direct user choice, we strongly prefer this configuration, 13892451dbcc4f9641df188326215b204b798eb70c46vandwalle // hence give +/-100 13902451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((lastSelectedConfiguration != null) 13912451dbcc4f9641df188326215b204b798eb70c46vandwalle && candidate.configKey().equals(lastSelectedConfiguration)) { 13922451dbcc4f9641df188326215b204b798eb70c46vandwalle // candidate is the last selected configuration, 13932451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 13942451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 13952451dbcc4f9641df188326215b204b798eb70c46vandwalle // by reducing order by -100 13962451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order - 100; 13972451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 13982f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers -100 " + candidate.configKey() 13992451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + config.configKey() 14002451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14012451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14022451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14032451dbcc4f9641df188326215b204b798eb70c46vandwalle } else if ((lastSelectedConfiguration != null) 14042451dbcc4f9641df188326215b204b798eb70c46vandwalle && config.configKey().equals(lastSelectedConfiguration)) { 14052451dbcc4f9641df188326215b204b798eb70c46vandwalle // config is the last selected configuration, 14062451dbcc4f9641df188326215b204b798eb70c46vandwalle // so keep it above connect choices (+/-60) and 14072451dbcc4f9641df188326215b204b798eb70c46vandwalle // above RSSI/scorer based selection of linked configuration (+/- 50) 14082451dbcc4f9641df188326215b204b798eb70c46vandwalle // by increasing order by +100 14092451dbcc4f9641df188326215b204b798eb70c46vandwalle order = order + 100; 14102451dbcc4f9641df188326215b204b798eb70c46vandwalle if (VDBG) { 14112f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg(" ...and prefers +100 " + config.configKey() 14122451dbcc4f9641df188326215b204b798eb70c46vandwalle + " over " + candidate.configKey() 14132451dbcc4f9641df188326215b204b798eb70c46vandwalle + " because it is the last selected -> " 14142451dbcc4f9641df188326215b204b798eb70c46vandwalle + Integer.toString(order)); 14152451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14162451dbcc4f9641df188326215b204b798eb70c46vandwalle } 14172451dbcc4f9641df188326215b204b798eb70c46vandwalle 1418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 1419931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Ascending : candidate < config 1420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 1421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1423f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1424f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1425c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Wait for VPN to be available on the system to make use of this code 14262451dbcc4f9641df188326215b204b798eb70c46vandwalle // Now, go thru scan result to try finding a better untrusted network 1427f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 1428f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 1429f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 1430f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 1431f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 1432f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 1433f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 1434f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1436931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Get current date 14372451dbcc4f9641df188326215b204b798eb70c46vandwalle long nowMs = System.currentTimeMillis(); 1438c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int currentScore = -10000; 1439c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // The untrusted network with highest score 1440c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle ScanResult untrustedCandidate = null; 14412451dbcc4f9641df188326215b204b798eb70c46vandwalle // Look for untrusted scored network only if the current candidate is bad 1442c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (isBadCandidate(rssi24, rssi5)) { 1443f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 1444c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int rssiBoost = 0; 1445c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We look only at untrusted networks with a valid SSID 1446c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // A trusted result would have been looked at thru it's Wificonfiguration 1447c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (TextUtils.isEmpty(result.SSID) || !result.untrusted) { 1448c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle continue; 1449c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 14502451dbcc4f9641df188326215b204b798eb70c46vandwalle if ((nowMs - result.seen) < 3000) { 1451c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Increment usage count for the network 1452c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle mWifiConnectionStatistics.incrementOrAddUntrusted(result.SSID, 0, 1); 1453c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle 1454c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID != null 1455c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && result.BSSID.equals(lastUntrustedBSSID)) { 1456c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Apply a large hysteresis to the untrusted network we are connected to 1457c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle rssiBoost = 25; 1458c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1459c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle int score = mNetworkScoreCache.getNetworkScore(result, rssiBoost); 1460c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (score != WifiNetworkScoreCache.INVALID_NETWORK_SCORE 1461c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle && score > currentScore) { 1462c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Highest score: Select this candidate 1463c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle currentScore = score; 1464c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = result; 1465c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (VDBG) { 1466c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle logDbg("AutoJoinController: found untrusted candidate " 1467c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + result.SSID 1468c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " RSSI=" + result.level 1469c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " freq=" + result.frequency 1470c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle + " score=" + score); 1471c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1472f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1473f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1474f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1475f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1476c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (untrustedCandidate != null) { 1477c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle if (lastUntrustedBSSID == null 1478c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle || !untrustedCandidate.SSID.equals(lastUntrustedBSSID)) { 1479c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // We found a new candidate that we are going to connect to, then 1480c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // increase its connection count 14818c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle mWifiConnectionStatistics. 14828c0a54e9b0d3713cab52d06ad8fd7f3a1b6f73a8vandwalle incrementOrAddUntrusted(untrustedCandidate.SSID, 1, 0); 1483c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Remember which SSID we are connecting to 1484c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle lastUntrustedBSSID = untrustedCandidate.SSID; 1485c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1486c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1487c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle // Now we don't have VPN, and thus don't actually connect to the untrusted candidate 1488c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle untrustedCandidate = null; 1489c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle } 1490b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle 1491931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1492931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * If candidate is found, check the state of the connection so as 1493931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * to decide if we should be acting on this candidate and switching over 1494931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1495e0aa0a004d161173992a0e9af1b431fae91f4a71vandwalle int networkDelta = compareNetwork(candidate, lastSelectedConfiguration); 1496b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle if (DBG && candidate != null) { 1497b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String doSwitch = ""; 1498b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle String current = ""; 1499b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (networkDelta < 0) { 1500b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle doSwitch = " -> not switching"; 1501b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1502b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle if (currentConfiguration != null) { 15032f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle current = " with current " + currentConfiguration.configKey(); 1504b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle } 1505b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle logDbg("attemptAutoJoin networkSwitching candidate " 1506b57df70bdf17ba45ef4d18b11414cb24dcbe1fb9vandwalle + candidate.configKey() 1507b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + current 1508c6f06c628ee3583b60ff31a7da442e0ac7b26d97vandwalle + " linked=" + (currentConfiguration != null 1509b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle && currentConfiguration.isLinked(candidate)) 1510b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + " : delta=" 1511b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + Integer.toString(networkDelta) + " " 1512b664cfeab6f02e24376ea0a15beb83d142f0b14dvandwalle + doSwitch); 1513b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 15144dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1515931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle /** 1516931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * Ask WifiStateMachine permission to switch : 1517931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * if user is currently streaming voice traffic, 1518931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle * then we should not be allowed to switch regardless of the delta 1519931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle */ 1520b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mWifiStateMachine.shouldSwitchNetwork(networkDelta)) { 1521b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (mStaStaSupported) { 1522b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("mStaStaSupported --> error do nothing now "); 1523b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1524b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (currentConfiguration != null && currentConfiguration.isLinked(candidate)) { 1525b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_EXTENDED_ROAMING; 1526b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } else { 1527b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_OUT_OF_NETWORK_ROAMING; 1528b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1529b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1530b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto connect with netId " 1531b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(candidate.networkId) 1532b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " to " + candidate.configKey()); 1533b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 15342451dbcc4f9641df188326215b204b798eb70c46vandwalle if (didOverride) { 15352451dbcc4f9641df188326215b204b798eb70c46vandwalle candidate.numScorerOverrideAndSwitchedNetwork++; 15362451dbcc4f9641df188326215b204b798eb70c46vandwalle } 1537c298087de50ea56c31a4ade7ee1e83b313bb63c7vandwalle candidate.numAssociation++; 1538e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoJoinAttempt++; 15399f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle 15402f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (candidate.BSSID == null || candidate.BSSID.equals("any")) { 15412f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // First step we selected the configuration we want to connect to 15422f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Second step: Look for the best Scan result for this configuration 15432f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // TODO this algorithm should really be done in one step 15442f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 15452f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle ScanResult roamCandidate = attemptRoam(null, candidate, 3000, null); 15462f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && currentBSSID != null 15472f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 15482f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // Sanity, we were already asociated to that candidate 15492f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle roamCandidate = null; 15502f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 15512f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && roamCandidate.is5GHz()) { 15522f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // If the configuration hasn't a default BSSID selected, and the best 15532f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // candidate is 5GHZ, then select this candidate so as WifiStateMachine and 15542f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle // supplicant will pick it first 15552f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle candidate.autoJoinBSSID = roamCandidate.BSSID; 15562f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (VDBG) { 15572f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle logDbg("AutoJoinController: lock to 5GHz " 15582f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + candidate.autoJoinBSSID 15592f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " RSSI=" + roamCandidate.level 15602f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle + " freq=" + roamCandidate.frequency); 15612f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle } 1562448c9536a302c58a79e271b1721c08b8882f800evandwalle } else { 1563448c9536a302c58a79e271b1721c08b8882f800evandwalle // We couldnt find a roam candidate 1564448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.autoJoinBSSID = "any"; 15659f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 15669f3349fa2cd39d690d1e2b7c3b71ced412e24f2cvandwalle } 1567448c9536a302c58a79e271b1721c08b8882f800evandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 1568448c9536a302c58a79e271b1721c08b8882f800evandwalle candidate.networkId, networkSwitchType, candidate); 15694dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle } 1570b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 15714dc6f3a322806b25d50039614cde1b94fe91ab17vandwalle 1572b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (networkSwitchType == AUTO_JOIN_IDLE) { 1573e67ec726c07410073575473c0f50dc737629f5davandwalle String currentBSSID = mWifiStateMachine.getCurrentBSSID(); 1574931338d1533d1bd11ba0e5aebb4e4b7b2c8ab056vandwalle // Attempt same WifiConfiguration roaming 1575e67ec726c07410073575473c0f50dc737629f5davandwalle ScanResult roamCandidate = attemptRoam(null, currentConfiguration, 3000, 1576e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1577e67ec726c07410073575473c0f50dc737629f5davandwalle /** 1578e67ec726c07410073575473c0f50dc737629f5davandwalle * TODO: (post L initial release) 1579e67ec726c07410073575473c0f50dc737629f5davandwalle * consider handling linked configurations roaming (i.e. extended Roaming) 1580e67ec726c07410073575473c0f50dc737629f5davandwalle * thru the attemptRoam function which makes use of the RSSI roaming threshold. 1581e67ec726c07410073575473c0f50dc737629f5davandwalle * At the moment, extended roaming is only handled thru the attemptAutoJoin() 1582e67ec726c07410073575473c0f50dc737629f5davandwalle * function which compare configurations. 1583e67ec726c07410073575473c0f50dc737629f5davandwalle * 1584e67ec726c07410073575473c0f50dc737629f5davandwalle * The advantage of making use of attemptRoam function is that this function 1585e67ec726c07410073575473c0f50dc737629f5davandwalle * will looks at all the BSSID of each configurations, instead of only looking 1586e67ec726c07410073575473c0f50dc737629f5davandwalle * at WifiConfiguration.visibility which keeps trackonly of the RSSI/band of the 1587e67ec726c07410073575473c0f50dc737629f5davandwalle * two highest BSSIDs. 1588e67ec726c07410073575473c0f50dc737629f5davandwalle */ 1589e67ec726c07410073575473c0f50dc737629f5davandwalle // Attempt linked WifiConfiguration roaming 1590e67ec726c07410073575473c0f50dc737629f5davandwalle /* if (currentConfiguration != null 1591e67ec726c07410073575473c0f50dc737629f5davandwalle && currentConfiguration.linkedConfigurations != null) { 1592e67ec726c07410073575473c0f50dc737629f5davandwalle for (String key : currentConfiguration.linkedConfigurations.keySet()) { 1593e67ec726c07410073575473c0f50dc737629f5davandwalle WifiConfiguration link = mWifiConfigStore.getWifiConfiguration(key); 1594e67ec726c07410073575473c0f50dc737629f5davandwalle if (link != null) { 1595e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = attemptRoam(roamCandidate, link, 3000, 1596e67ec726c07410073575473c0f50dc737629f5davandwalle currentBSSID); 1597e67ec726c07410073575473c0f50dc737629f5davandwalle } 1598e67ec726c07410073575473c0f50dc737629f5davandwalle } 1599e67ec726c07410073575473c0f50dc737629f5davandwalle }*/ 1600e67ec726c07410073575473c0f50dc737629f5davandwalle if (roamCandidate != null && currentBSSID != null 1601e67ec726c07410073575473c0f50dc737629f5davandwalle && currentBSSID.equals(roamCandidate.BSSID)) { 1602e67ec726c07410073575473c0f50dc737629f5davandwalle roamCandidate = null; 1603e67ec726c07410073575473c0f50dc737629f5davandwalle } 16042f2cf21662275a0e93d7d7a6ad3d98b4c596dcf0vandwalle if (roamCandidate != null && mWifiStateMachine.shouldSwitchNetwork(999)) { 1605b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (DBG) { 1606b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle logDbg("AutoJoin auto roam with netId " 1607b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + Integer.toString(currentConfiguration.networkId) 1608b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " " + currentConfiguration.configKey() + " to BSSID=" 1609b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + roamCandidate.BSSID + " freq=" + roamCandidate.frequency 1610b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle + " RSSI=" + roamCandidate.frequency); 1611b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle } 1612b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle networkSwitchType = AUTO_JOIN_ROAMING; 1613e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle mWifiConnectionStatistics.numAutoRoamAttempt++; 1614e8c89583e489d451880471b7cc7659bd9fa802f4vandwalle 1615b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_ROAM, 1616b07da189850a4bfa268f8ab9be7867935eb2ecb5vandwalle currentConfiguration.networkId, 1, roamCandidate); 1617f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1618f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1619b97e66604f472f67c233bb8f8d9630bb36131e2cvandwalle if (VDBG) logDbg("Done attemptAutoJoin status=" + Integer.toString(networkSwitchType)); 1620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1621f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 1622f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1623