Eth Management APIs to Support TEST Interfaces

Updating Ethernet Network Management APIs to allow support for test
interfaces when the caller has the MANAGE_TEST_NETWORKS permission, test
interfaces are being tracked in ethernet and if updating a network's
capabilities, they include the TEST transport.

Bug: 210487893
Test: atest EthernetServiceTests
atest CtsNetTestCasesLatestSdk
:android.net.cts.EthernetManagerTest

Change-Id: I0e0bc9632d9b3d5d61f23e74150586f42c0b5bd2

1 files changed, 14 insertions, 0 deletions

diff --git a/java/com/android/server/ethernet/EthernetTracker.java b/java/com/android/server/ethernet/EthernetTracker.java
index 794b5d1..9070a7e 100644
--- a/java/com/android/server/ethernet/EthernetTracker.java
+++ b/java/com/android/server/ethernet/EthernetTracker.java
@@ -86,6 +86,9 @@ public class EthernetTracker {
      * if setIncludeTestInterfaces is true, any test interfaces.
      */
     private String mIfaceMatch;
+    /**
+     * Track test interfaces if true, don't track otherwise.
+     */
     private boolean mIncludeTestInterfaces = false;
 
     /** Mapping between {iface name | mac address} -> {NetworkCapabilities} */
@@ -738,6 +741,17 @@ public class EthernetTracker {
         Log.d(TAG, "Interface match regexp set to '" + mIfaceMatch + "'");
     }
 
+    /**
+     * Validate if a given interface is valid for testing.
+     *
+     * @param iface the name of the interface to validate.
+     * @return {@code true} if test interfaces are enabled and the given {@code iface} has a test
+     * interface prefix, {@code false} otherwise.
+     */
+    public boolean isValidTestInterface(@NonNull final String iface) {
+        return mIncludeTestInterfaces && iface.matches(TEST_IFACE_REGEXP);
+    }
+
     private void postAndWaitForRunnable(Runnable r) {
         final ConditionVariable cv = new ConditionVariable();
         if (mHandler.post(() -> {