diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index da7229ce69afd154f8187636b429cf65c98c42aa..86f49d35bbfdcc7263c9a2af4016c41815506af7 100755
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -98,6 +98,11 @@ import static android.system.OsConstants.ETH_P_ALL;
import static android.system.OsConstants.IPPROTO_TCP;
import static android.system.OsConstants.IPPROTO_UDP;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET4_BIND;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET6_BIND;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_EGRESS;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_INGRESS;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_SOCK_CREATE;
import static com.android.net.module.util.NetworkMonitorUtils.isPrivateDnsValidationRequired;
import static com.android.net.module.util.PermissionUtils.checkAnyPermissionOf;
import static com.android.net.module.util.PermissionUtils.enforceAnyPermissionOf;
@@ -277,6 +282,7 @@ import com.android.modules.utils.build.SdkLevel;
import com.android.net.module.util.BaseNetdUnsolicitedEventListener;
import com.android.net.module.util.BinderUtils;
import com.android.net.module.util.BitUtils;
+import com.android.net.module.util.BpfUtils;
import com.android.net.module.util.CollectionUtils;
import com.android.net.module.util.DeviceConfigUtils;
import com.android.net.module.util.InterfaceParams;
@@ -1525,6 +1531,14 @@ public class ConnectivityService extends IConnectivityManager.Stub
}
}
+ /**
+ * Get BPF program Id from CGROUP. See {@link BpfUtils#getProgramId}.
+ */
+ public int getBpfProgramId(final int attachType, @NonNull final String cgroupPath)
+ throws IOException {
+ return BpfUtils.getProgramId(attachType, cgroupPath);
+ }
+
/**
* Wraps {@link BroadcastOptionsShimImpl#newInstance(BroadcastOptions)}
*/
@@ -3249,6 +3263,26 @@ public class ConnectivityService extends IConnectivityManager.Stub
pw.decreaseIndent();
}
+ private void dumpBpfProgramStatus(IndentingPrintWriter pw) {
+ pw.println("Bpf Program Status:");
+ pw.increaseIndent();
+ try {
+ pw.print("CGROUP_INET_INGRESS: ");
+ pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_INGRESS, BpfUtils.CGROUP_PATH));
+ pw.print("CGROUP_INET_EGRESS: ");
+ pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_EGRESS, BpfUtils.CGROUP_PATH));
+ pw.print("CGROUP_INET_SOCK_CREATE: ");
+ pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_SOCK_CREATE, BpfUtils.CGROUP_PATH));
+ pw.print("CGROUP_INET4_BIND: ");
+ pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET4_BIND, BpfUtils.CGROUP_PATH));
+ pw.print("CGROUP_INET6_BIND: ");
+ pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET6_BIND, BpfUtils.CGROUP_PATH));
+ } catch (IOException e) {
+ pw.println(" IOException");
+ }
+ pw.decreaseIndent();
+ }
+
@VisibleForTesting
static final String KEY_DESTROY_FROZEN_SOCKETS_VERSION = "destroy_frozen_sockets_version";
@VisibleForTesting
@@ -3862,6 +3896,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
pw.println();
dumpCloseFrozenAppSockets(pw);
+ pw.println();
+ dumpBpfProgramStatus(pw);
+
pw.println();
if (!CollectionUtils.contains(args, SHORT_ARG)) {
diff --git a/service/src/com/android/server/connectivity/ConnectivityNativeService.java b/service/src/com/android/server/connectivity/ConnectivityNativeService.java
index e16117be567f9cb9e219ca38585f5827c8b8e521..cf6127f71af01ab2678f40b02b81b391f0a31056 100644
--- a/service/src/com/android/server/connectivity/ConnectivityNativeService.java
+++ b/service/src/com/android/server/connectivity/ConnectivityNativeService.java
@@ -16,9 +16,6 @@
package com.android.server.connectivity;
-import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET4_BIND;
-import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET6_BIND;
-
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.Context;
@@ -31,11 +28,9 @@ import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.net.module.util.BpfBitmap;
-import com.android.net.module.util.BpfUtils;
import com.android.net.module.util.CollectionUtils;
import com.android.net.module.util.PermissionUtils;
-import java.io.IOException;
import java.util.ArrayList;
/**
@@ -45,7 +40,7 @@ public class ConnectivityNativeService extends ConnectivityNative.Stub {
public static final String SERVICE_NAME = "connectivity_native";
private static final String TAG = ConnectivityNativeService.class.getSimpleName();
- private static final String CGROUP_PATH = "/sys/fs/cgroup";
+
private static final String BLOCKED_PORTS_MAP_PATH =
"/sys/fs/bpf/net_shared/map_block_blocked_ports_map";
diff --git a/staticlibs/device/com/android/net/module/util/BpfUtils.java b/staticlibs/device/com/android/net/module/util/BpfUtils.java
index f1546c09249a341f9bdca12c22bf4c059e905d08..6116a5fec90a69d566df8478b5acacac2a6f7e5e 100644
--- a/staticlibs/device/com/android/net/module/util/BpfUtils.java
+++ b/staticlibs/device/com/android/net/module/util/BpfUtils.java
@@ -32,9 +32,13 @@ public class BpfUtils {
// Defined in include/uapi/linux/bpf.h. Only adding the CGROUPS currently being used for now.
public static final int BPF_CGROUP_INET_INGRESS = 0;
public static final int BPF_CGROUP_INET_EGRESS = 1;
+ public static final int BPF_CGROUP_INET_SOCK_CREATE = 2;
public static final int BPF_CGROUP_INET4_BIND = 8;
public static final int BPF_CGROUP_INET6_BIND = 9;
+ // Note: This is only guaranteed to be accurate on U+ devices. It is likely to be accurate
+ // on T+ devices as well, but this is not guaranteed.
+ public static final String CGROUP_PATH = "/sys/fs/cgroup/";
/**
* Attach BPF program to CGROUP
@@ -52,6 +56,20 @@ public class BpfUtils {
native_detachProgramFromCgroup(type, cgroupPath);
}
+ /**
+ * Get BPF program Id from CGROUP.
+ *
+ * Note: This requires a 4.19 kernel which is only guaranteed on V+.
+ *
+ * @param attachType Bpf attach type. See bpf_attach_type in include/uapi/linux/bpf.h.
+ * @param cgroupPath Path of cgroup.
+ * @return Positive integer for a Program Id. 0 if no program is attached.
+ * @throws IOException if failed to open the cgroup directory or query bpf program.
+ */
+ public static int getProgramId(int attachType, @NonNull String cgroupPath) throws IOException {
+ return native_getProgramIdFromCgroup(attachType, cgroupPath);
+ }
+
/**
* Detach single BPF program from CGROUP
*/
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index ee11f7caee250ca24e694ff1dc6a11b9717ddb5e..3c70b112e75f059a9ffd130780d9c57ebbe2b6c6 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -2267,6 +2267,11 @@ public class ConnectivityServiceTest {
mActiveRateLimit.put(iface, -1L);
}
+ @Override
+ public int getBpfProgramId(final int attachType, @NonNull final String cgroupPath) {
+ return 0;
+ }
+
@Override
public BroadcastOptionsShim makeBroadcastOptionsShim(BroadcastOptions options) {
reset(mBroadcastOptionsShim);