Merge changes I253a0f6d,Ibc566fae,I2aad7d78,Ifc2967f6,I7f54479a into main

* changes:
  Rename wifiIfaceName to ifname
  Remove unnecessary null check
  Unregister network callback in tearDown
  Don't run test in instant app mode
  Revert^2 "Introduce initial CTS test for APF functionality"
diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
new file mode 100644
index 0000000..3ecbdc6
--- /dev/null
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net.cts
+
+import android.content.pm.PackageManager.FEATURE_WIFI
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import android.os.Build
+import android.platform.test.annotations.AppModeFull
+import android.system.OsConstants
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.compatibility.common.util.PropertyUtil.isVendorApiLevelNewerThan
+import com.android.compatibility.common.util.SystemUtil
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.NetworkStackModuleTest
+import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
+import com.android.testutils.TestableNetworkCallback
+import com.google.common.truth.Truth.assertThat
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import org.junit.After
+import org.junit.Assume.assumeTrue
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TIMEOUT_MS = 2000L
+
+@AppModeFull(reason = "CHANGE_NETWORK_STATE permission can't be granted to instant apps")
+@RunWith(DevSdkIgnoreRunner::class)
+@NetworkStackModuleTest
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+class ApfIntegrationTest {
+    private val context by lazy { InstrumentationRegistry.getInstrumentation().context }
+    private val cm by lazy { context.getSystemService(ConnectivityManager::class.java)!! }
+    private val pm by lazy { context.packageManager }
+    private lateinit var ifname: String
+    private lateinit var networkCallback: TestableNetworkCallback
+
+    @Before
+    fun setUp() {
+        assumeTrue(pm.hasSystemFeature(FEATURE_WIFI))
+        assumeTrue(isVendorApiLevelNewerThan(Build.VERSION_CODES.TIRAMISU))
+        networkCallback = TestableNetworkCallback()
+        cm.requestNetwork(
+                NetworkRequest.Builder()
+                        .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
+                        .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+                        .build(),
+                networkCallback
+        )
+        networkCallback.eventuallyExpect<LinkPropertiesChanged>(TIMEOUT_MS) {
+            ifname = assertNotNull(it.lp.interfaceName)
+            true
+        }
+    }
+
+    @After
+    fun tearDown() {
+        if (::networkCallback.isInitialized) {
+            cm.unregisterNetworkCallback(networkCallback)
+        }
+    }
+
+    @Test
+    fun testGetApfCapabilities() {
+        val caps = SystemUtil.runShellCommand("cmd network_stack apf $ifname capabilities").trim()
+        val (version, maxLen, packetFormat) = caps.split(",").map { it.toInt() }
+        assertEquals(4, version)
+        assertThat(maxLen).isAtLeast(1024)
+        if (isVendorApiLevelNewerThan(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)) {
+            assertThat(maxLen).isAtLeast(2000)
+        }
+        assertEquals(OsConstants.ARPHRD_ETHER, packetFormat)
+    }
+}