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[WIFI] Trigger WiFi recovery mode

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Trigger WiFi recovery. The WiFi chip will get disabled and then
re-enabled. The state at the exit may not match the entry state.

Bug: 175084231
Test: atest com.android.server.wifi
Test: atest android.net.wifi
Test: adb shell cmd wifi trigger-recovery
Change-Id: Ie46bc697dcc003758c5df7c7c9d594e365086c7d
This commit is contained in:
Etan Cohen
2020-12-07 08:49:21 -08:00
parent 1bf2b0f2d8
commit ac1a7a3e1f
3 changed files with 34 additions and 0 deletions
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1
wifi/api/system-current.txt
View File

@@ -495,6 +495,7 @@ package android.net.wifi {
method @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS) public void registerSoftApCallback(@NonNull java.util.concurrent.Executor, @NonNull android.net.wifi.WifiManager.SoftApCallback);
method @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS) public void registerTrafficStateCallback(@NonNull java.util.concurrent.Executor, @NonNull android.net.wifi.WifiManager.TrafficStateCallback);
method @RequiresPermission(android.Manifest.permission.WIFI_UPDATE_USABILITY_STATS_SCORE) public void removeOnWifiUsabilityStatsListener(@NonNull android.net.wifi.WifiManager.OnWifiUsabilityStatsListener);
method @RequiresPermission(android.Manifest.permission.NETWORK_AIRPLANE_MODE) public void restartWifiSubsystem(@Nullable String);
method @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS) public void restoreBackupData(@NonNull byte[]);
method @Nullable @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS) public android.net.wifi.SoftApConfiguration restoreSoftApBackupData(@NonNull byte[]);
method @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS) public void restoreSupplicantBackupData(@NonNull byte[], @NonNull byte[]);

2
wifi/java/android/net/wifi/IWifiManager.aidl
View File

@@ -300,4 +300,6 @@ interface IWifiManager
void setCarrierNetworkOffloadEnabled(int subscriptionId, boolean merged, boolean enabled);
boolean isCarrierNetworkOffloadEnabled(int subscriptionId, boolean merged);
void restartWifiSubsystem(String reason);
}

31
wifi/java/android/net/wifi/WifiManager.java
View File

@@ -3040,6 +3040,37 @@ public class WifiManager {
}
}
/**
* Restart the Wi-Fi subsystem.
*
* Restarts the Wi-Fi subsystem - effectively disabling it and re-enabling it. All existing
* Access Point (AP) associations are torn down, all Soft APs are disabled, Wi-Fi Direct and
* Wi-Fi Aware are disabled.
*
* The state of the system after restart is not guaranteed to match its state before the API is
* called - for instance the device may associate to a different Access Point (AP), and tethered
* hotspots may or may not be restored.
*
* @param reason If non-null, requests a bug report and attaches the reason string to it. A bug
* report may still not be generated based on framework criteria - for instance,
* build type or throttling. The WiFi subsystem is restarted whether or not a bug
* report is requested or generated.
*
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.NETWORK_AIRPLANE_MODE)
public void restartWifiSubsystem(@Nullable String reason) {
if (!SdkLevel.isAtLeastS()) {
throw new UnsupportedOperationException();
}
try {
mService.restartWifiSubsystem(reason);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Gets the Wi-Fi enabled state.
* @return One of {@link #WIFI_STATE_DISABLED},