Guard against missing mac addresses in onWakeupEvent
The native code may not send any data for the NFULA_HWADDR on
some networks which can result in an exception. Logging an exception if
this happens over WiFi, as this is not expected.
Test: atest FrameworksNetTests
Test: Manually inspect logs and output of `dumpsys connmetrics`
Bug: 276498460
Change-Id: Iba20ec1f47b682cfff6127eeade0fdbf912945a6
Merged-In: Iba20ec1f47b682cfff6127eeade0fdbf912945a6
diff --git a/core/java/android/net/metrics/WakeupStats.java b/core/java/android/net/metrics/WakeupStats.java
index bb36536..fac747c 100644
--- a/core/java/android/net/metrics/WakeupStats.java
+++ b/core/java/android/net/metrics/WakeupStats.java
@@ -80,18 +80,20 @@
break;
}
- switch (ev.dstHwAddr.getAddressType()) {
- case MacAddress.TYPE_UNICAST:
- l2UnicastCount++;
- break;
- case MacAddress.TYPE_MULTICAST:
- l2MulticastCount++;
- break;
- case MacAddress.TYPE_BROADCAST:
- l2BroadcastCount++;
- break;
- default:
- break;
+ if (ev.dstHwAddr != null) {
+ switch (ev.dstHwAddr.getAddressType()) {
+ case MacAddress.TYPE_UNICAST:
+ l2UnicastCount++;
+ break;
+ case MacAddress.TYPE_MULTICAST:
+ l2MulticastCount++;
+ break;
+ case MacAddress.TYPE_BROADCAST:
+ l2BroadcastCount++;
+ break;
+ default:
+ break;
+ }
}
increment(ethertypes, ev.ethertype);
diff --git a/services/core/java/com/android/server/connectivity/NetdEventListenerService.java b/services/core/java/com/android/server/connectivity/NetdEventListenerService.java
index 1f82961..6d43061 100644
--- a/services/core/java/com/android/server/connectivity/NetdEventListenerService.java
+++ b/services/core/java/com/android/server/connectivity/NetdEventListenerService.java
@@ -41,6 +41,7 @@
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.ArrayUtils;
import com.android.internal.util.BitUtils;
import com.android.internal.util.FrameworkStatsLog;
import com.android.internal.util.RingBuffer;
@@ -278,6 +279,11 @@
}
}
+ private boolean hasWifiTransport(Network network) {
+ final NetworkCapabilities nc = mCm.getNetworkCapabilities(network);
+ return nc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
+ }
+
@Override
public synchronized void onWakeupEvent(String prefix, int uid, int ethertype, int ipNextHeader,
byte[] dstHw, String srcIp, String dstIp, int srcPort, int dstPort, long timestampNs) {
@@ -286,12 +292,21 @@
throw new IllegalArgumentException("Prefix " + prefix
+ " required in format <nethandle>:<interface>");
}
+ final long netHandle = Long.parseLong(prefixParts[0]);
+ final Network network = Network.fromNetworkHandle(netHandle);
final WakeupEvent event = new WakeupEvent();
event.iface = prefixParts[1];
event.uid = uid;
event.ethertype = ethertype;
- event.dstHwAddr = MacAddress.fromBytes(dstHw);
+ if (ArrayUtils.isEmpty(dstHw)) {
+ if (hasWifiTransport(network)) {
+ Log.e(TAG, "Empty mac address on WiFi transport, network: " + network);
+ }
+ event.dstHwAddr = null;
+ } else {
+ event.dstHwAddr = MacAddress.fromBytes(dstHw);
+ }
event.srcIp = srcIp;
event.dstIp = dstIp;
event.ipNextHeader = ipNextHeader;
@@ -306,14 +321,12 @@
final BatteryStatsInternal bsi = LocalServices.getService(BatteryStatsInternal.class);
if (bsi != null) {
- final long netHandle = Long.parseLong(prefixParts[0]);
final long elapsedMs = SystemClock.elapsedRealtime() + event.timestampMs
- System.currentTimeMillis();
- bsi.noteCpuWakingNetworkPacket(Network.fromNetworkHandle(netHandle), elapsedMs,
- event.uid);
+ bsi.noteCpuWakingNetworkPacket(network, elapsedMs, event.uid);
}
- final String dstMac = event.dstHwAddr.toString();
+ final String dstMac = String.valueOf(event.dstHwAddr);
FrameworkStatsLog.write(FrameworkStatsLog.PACKET_WAKEUP_OCCURRED,
uid, event.iface, ethertype, dstMac, srcIp, dstIp, ipNextHeader, srcPort, dstPort);
}