WifiMetrics: Add metrics when softap band preference unsatisfied

Bug: 79701630
Test: Unit tests
Test: Validated that the metric is updated when STA + AP forces the AP
to not satisfy the band preference.
(act.py -c softap_cross_onhub.config -tb dut-name -tc
WifiStaApConcurrencyTest:test_wifi_connection_5G_DFS_softap_5G)

Change-Id: Ib3131d25969a9d89f8b46f6dc788fb2a16324909

2 files changed, 38 insertions, 0 deletions

diff --git a/service/java/com/android/server/wifi/SoftApManager.java b/service/java/com/android/server/wifi/SoftApManager.java
index 99bdb5b98..2faf11577 100644
--- a/service/java/com/android/server/wifi/SoftApManager.java
+++ b/service/java/com/android/server/wifi/SoftApManager.java
@@ -26,6 +26,7 @@ import android.content.Intent;
 import android.database.ContentObserver;
 import android.net.wifi.WifiConfiguration;
 import android.net.wifi.WifiManager;
+import android.net.wifi.WifiScanner;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
@@ -37,6 +38,7 @@ import android.util.Log;
 
 import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.IState;
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
@@ -47,7 +49,9 @@ import com.android.server.wifi.util.ApConfigUtil;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
+import java.util.Arrays;
 import java.util.Locale;
+import java.util.stream.Stream;
 
 /**
  * Manage WiFi in AP mode.
@@ -530,6 +534,29 @@ public class SoftApManager implements ActiveModeManager {
                                 + " Bandwidth: " + mReportedBandwidth);
                         mWifiMetrics.addSoftApChannelSwitchedEvent(mReportedFrequency,
                                 mReportedBandwidth, mMode);
+                        int[] allowedChannels = new int[0];
+                        if (mApConfig.apBand == WifiConfiguration.AP_BAND_2GHZ) {
+                            allowedChannels =
+                                    mWifiNative.getChannelsForBand(WifiScanner.WIFI_BAND_24_GHZ);
+                        } else if (mApConfig.apBand == WifiConfiguration.AP_BAND_5GHZ) {
+                            allowedChannels =
+                                    mWifiNative.getChannelsForBand(WifiScanner.WIFI_BAND_5_GHZ);
+                        } else if (mApConfig.apBand == WifiConfiguration.AP_BAND_ANY) {
+                            int[] allowed2GChannels =
+                                    mWifiNative.getChannelsForBand(WifiScanner.WIFI_BAND_24_GHZ);
+                            int[] allowed5GChannels =
+                                    mWifiNative.getChannelsForBand(WifiScanner.WIFI_BAND_5_GHZ);
+                            allowedChannels = Stream.concat(
+                                    Arrays.stream(allowed2GChannels).boxed(),
+                                    Arrays.stream(allowed5GChannels).boxed())
+                                    .mapToInt(Integer::valueOf)
+                                    .toArray();
+                        }
+                        if (!ArrayUtils.contains(allowedChannels, mReportedFrequency)) {
+                            Log.e(TAG, "Channel does not satisfy user band preference: "
+                                    + mReportedFrequency);
+                            mWifiMetrics.incrementNumSoftApUserBandPreferenceUnsatisfied();
+                        }
                         break;
                     case CMD_TIMEOUT_TOGGLE_CHANGED:
                         boolean isEnabled = (message.arg1 == 1);
diff --git a/service/java/com/android/server/wifi/WifiMetrics.java b/service/java/com/android/server/wifi/WifiMetrics.java
index 93dec11eb..3097658d3 100644
--- a/service/java/com/android/server/wifi/WifiMetrics.java
+++ b/service/java/com/android/server/wifi/WifiMetrics.java
@@ -1549,6 +1549,15 @@ public class WifiMetrics {
     }
 
     /**
+     * Increment number of times we detected a channel did not satisfy user band preference.
+     */
+    public void incrementNumSoftApUserBandPreferenceUnsatisfied() {
+        synchronized (mLock) {
+            mWifiLogProto.numSoftApUserBandPreferenceUnsatisfied++;
+        }
+    }
+
+    /**
      * Increment N-Way network selection decision histograms:
      * Counts the size of various sets of scanDetails within a scan, and increment the occurrence
      * of that size for the associated histogram. There are ten histograms generated for each
@@ -1994,6 +2003,8 @@ public class WifiMetrics {
                         + mWifiLogProto.numRadioModeChangeToSbs);
                 pw.println("mWifiLogProto.numRadioModeChangeToDbs="
                         + mWifiLogProto.numRadioModeChangeToDbs);
+                pw.println("mWifiLogProto.numSoftApUserBandPreferenceUnsatisfied="
+                        + mWifiLogProto.numSoftApUserBandPreferenceUnsatisfied);
                 pw.println("mTotalSsidsInScanHistogram:"
                         + mTotalSsidsInScanHistogram.toString());
                 pw.println("mTotalBssidsInScanHistogram:"