Merge changes I33bc80cc,Ie84e2cd4 am: fd402476f1 am: a89d0bf43a
Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2384592
Change-Id: Ia617e57b597adc4930be765287167b44f5a3dc5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/framework/src/android/net/TestNetworkManager.java b/framework/src/android/net/TestNetworkManager.java
index b64299f..416c6de 100644
--- a/framework/src/android/net/TestNetworkManager.java
+++ b/framework/src/android/net/TestNetworkManager.java
@@ -260,7 +260,7 @@
/**
* Create a tap interface with or without carrier for testing purposes.
*
- * Note: setting carrierUp = false is not supported until kernel version 5.0.
+ * Note: setting carrierUp = false is not supported until kernel version 6.0.
*
* @param carrierUp whether the created interface has a carrier or not.
* @param bringUp whether to bring up the interface before returning it.
@@ -280,6 +280,8 @@
/**
* Create a tap interface for testing purposes.
*
+ * Note: setting carrierUp = false is not supported until kernel version 6.0.
+ *
* @param carrierUp whether the created interface has a carrier or not.
* @param bringUp whether to bring up the interface before returning it.
* @param disableIpv6ProvisioningDelay whether to disable DAD and RS delay.
diff --git a/service/jni/com_android_server_TestNetworkService.cpp b/service/jni/com_android_server_TestNetworkService.cpp
index 7aeecfa..3e4c4de 100644
--- a/service/jni/com_android_server_TestNetworkService.cpp
+++ b/service/jni/com_android_server_TestNetworkService.cpp
@@ -38,9 +38,14 @@
#include "jni.h"
#include <android-base/stringprintf.h>
#include <android-base/unique_fd.h>
+#include <bpf/KernelVersion.h>
#include <nativehelper/JNIHelp.h>
#include <nativehelper/ScopedUtfChars.h>
+#ifndef IFF_NO_CARRIER
+#define IFF_NO_CARRIER 0x0040
+#endif
+
namespace android {
//------------------------------------------------------------------------------
@@ -66,17 +71,21 @@
// Allocate interface.
ifr.ifr_flags = (isTun ? IFF_TUN : IFF_TAP) | IFF_NO_PI;
+ if (!hasCarrier) {
+ // Using IFF_NO_CARRIER is supported starting in kernel version >= 6.0
+ // Up until then, unsupported flags are ignored.
+ if (!bpf::isAtLeastKernelVersion(6, 0, 0)) {
+ throwException(env, EOPNOTSUPP, "IFF_NO_CARRIER not supported", ifr.ifr_name);
+ return -1;
+ }
+ ifr.ifr_flags |= IFF_NO_CARRIER;
+ }
strlcpy(ifr.ifr_name, iface, IFNAMSIZ);
if (ioctl(tun.get(), TUNSETIFF, &ifr)) {
throwException(env, errno, "allocating", ifr.ifr_name);
return -1;
}
- if (!hasCarrier) {
- // disable carrier before setting IFF_UP
- setTunTapCarrierEnabledImpl(env, iface, tun.get(), hasCarrier);
- }
-
// Mark some TAP interfaces as supporting multicast
if (setIffMulticast && !isTun) {
base::unique_fd inet6CtrlSock(socket(AF_INET6, SOCK_DGRAM, 0));
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index 67bdd17..732a42b 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -392,7 +392,15 @@
}
// Setting the carrier up / down relies on TUNSETCARRIER which was added in kernel version 5.0.
- private fun assumeChangingCarrierSupported() = assumeTrue(isKernelVersionAtLeast("5.0.0"))
+ private fun assumeChangingCarrierSupported() {
+ assumeTrue(isKernelVersionAtLeast("5.0.0"))
+ }
+
+ // Configuring a tap interface without carrier relies on IFF_NO_CARRIER
+ // which was added in kernel version 6.0.
+ private fun assumeCreateInterfaceWithoutCarrierSupported() {
+ assumeTrue(isKernelVersionAtLeast("6.0.0"))
+ }
private fun isAdbOverEthernet(): Boolean {
// If no ethernet interface is available, adb is not connected over ethernet.
@@ -417,7 +425,7 @@
}
// WARNING: setting hasCarrier to false requires kernel support. Call
- // assumeChangingCarrierSupported() at the top of your test.
+ // assumeCreateInterfaceWithoutCarrierSupported() at the top of your test.
private fun createInterface(hasCarrier: Boolean = true): EthernetTestInterface {
val iface = EthernetTestInterface(
context,
@@ -791,15 +799,13 @@
@Test
fun testNetworkRequest_forInterfaceWhileTogglingCarrier() {
+ assumeCreateInterfaceWithoutCarrierSupported()
assumeChangingCarrierSupported()
val iface = createInterface(false /* hasCarrier */)
val cb = requestNetwork(ETH_REQUEST)
- // TUNSETCARRIER races with the bring up code, so the network *can* become available despite
- // it being "created with no carrier".
- // TODO(b/249611919): re-enable assertion once kernel supports IFF_NO_CARRIER.
- // cb.assertNeverAvailable()
+ cb.assertNeverAvailable()
iface.setCarrierEnabled(true)
cb.expect<Available>()