Fully setup test TUN iface on create. am: 5cbd7b38ca

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/14969443

Change-Id: I6937e841f5213cc6a5705853a44ca7e519158d44

service/src/com/android/server/TestNetworkService.java

@@ -48,7 +48,6 @@ import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.net.module.util.NetdUtils;
 import com.android.net.module.util.NetworkStackConstants;
-import com.android.net.module.util.PermissionUtils;
 
 import java.io.UncheckedIOException;
 import java.net.Inet4Address;
@@ -123,6 +122,8 @@ class TestNetworkService extends ITestNetworkManager.Stub {
                         addr.getPrefixLength());
             }
 
+            NetdUtils.setInterfaceUp(mNetd, iface);
+
             return new TestNetworkInterface(tunIntf, iface);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
@@ -324,14 +325,6 @@ class TestNetworkService extends ITestNetworkManager.Stub {
         }
 
         try {
-            final long token = Binder.clearCallingIdentity();
-            try {
-                PermissionUtils.enforceNetworkStackPermission(mContext);
-                NetdUtils.setInterfaceUp(mNetd, iface);
-            } finally {
-                Binder.restoreCallingIdentity(token);
-            }
-
             // Synchronize all accesses to mTestNetworkTracker to prevent the case where:
             // 1. TestNetworkAgent successfully binds to death of binder
             // 2. Before it is added to the mTestNetworkTracker, binder dies, binderDied() is called