Add struct ClatIngress6Value

This is a preparation for moving clat map access to java BpfMap class

Test: make net-utils-device-common-bpf
Change-Id: I7dec8bc368fa8de7cf44656d0dc1477b2a5a647b
diff --git a/staticlibs/device/com/android/net/module/util/bpf/ClatIngress6Value.java b/staticlibs/device/com/android/net/module/util/bpf/ClatIngress6Value.java
new file mode 100644
index 0000000..bfec44f
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/bpf/ClatIngress6Value.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2022 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 com.android.net.module.util.bpf;
+
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Field;
+import com.android.net.module.util.Struct.Type;
+
+import java.net.Inet4Address;
+
+/** Value type for clat ingress IPv6 maps. */
+public class ClatIngress6Value extends Struct {
+    @Field(order = 0, type = Type.U32)
+    public final long oif; // The output interface to redirect to (0 means don't redirect)
+
+    @Field(order = 1, type = Type.Ipv4Address)
+    public final Inet4Address local4; // The destination IPv4 address
+
+    public ClatIngress6Value(final long oif, final Inet4Address local4) {
+        this.oif = oif;
+        this.local4 = local4;
+    }
+}