Support "dumpsys connectivity trafficcontroller"
Enable ConnectivityService to dump BPF maps from libtraffic_controller.
Bug: 202086915
Test: adb shell dumpsys connectivity trafficcontroller
Test: atest CtsNetTestCases:ConnectivityManagerTest#testDumpBpfNetMaps
Test: run CTS in I021789813f116940d581e2c4a1fd357ff47bfa08
Change-Id: Ib0e935ee2b714ac61daceba6d13fa7a20f97f68f
diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index ddee275..f2ca18b 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -16,6 +16,8 @@
package com.android.server;
+import static android.system.OsConstants.EOPNOTSUPP;
+
import android.net.INetd;
import android.os.RemoteException;
import android.os.ServiceSpecificException;
@@ -24,6 +26,9 @@
import com.android.modules.utils.build.SdkLevel;
+import java.io.FileDescriptor;
+import java.io.IOException;
+
/**
* BpfNetMaps is responsible for providing traffic controller relevant functionality.
*
@@ -273,6 +278,23 @@
native_setPermissionForUids(permissions, uids);
}
+ /**
+ * Dump BPF maps
+ *
+ * @param fd file descriptor to output
+ * @throws IOException when file descriptor is invalid.
+ * @throws ServiceSpecificException when the method is called on an unsupported device.
+ */
+ public void dump(final FileDescriptor fd, boolean verbose)
+ throws IOException, ServiceSpecificException {
+ if (USE_NETD) {
+ throw new ServiceSpecificException(
+ EOPNOTSUPP, "dumpsys connectivity trafficcontroller dump not available on pre-T"
+ + " devices, use dumpsys netd trafficcontroller instead.");
+ }
+ native_dump(fd, verbose);
+ }
+
private static native void native_init();
private native int native_addNaughtyApp(int uid);
private native int native_removeNaughtyApp(int uid);
@@ -285,4 +307,5 @@
private native int native_removeUidInterfaceRules(int[] uids);
private native int native_swapActiveStatsMap();
private native void native_setPermissionForUids(int permissions, int[] uids);
+ private native void native_dump(FileDescriptor fd, boolean verbose);
}