diff --git a/pipelines/basic/src/main/resources/include/packet_io.p4 b/pipelines/basic/src/main/resources/include/packet_io.p4
new file mode 100644
index 0000000..4ed681c
--- /dev/null
+++ b/pipelines/basic/src/main/resources/include/packet_io.p4
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.
+ */
+
+#ifndef __PACKET_IO__
+#define __PACKET_IO__
+
+#include "headers.p4"
+#include "defines.p4"
+
+control packetio_ingress(inout headers_t hdr,
+                         inout standard_metadata_t standard_metadata) {
+    apply {
+        if (standard_metadata.ingress_port == CPU_PORT) {
+            standard_metadata.egress_spec = hdr.packet_out.egress_port;
+            hdr.packet_out.setInvalid();
+            exit;
+        }
+    }
+}
+
+control packetio_egress(inout headers_t hdr,
+                        inout standard_metadata_t standard_metadata) {
+    apply {
+        if (standard_metadata.egress_port == CPU_PORT) {
+            hdr.packet_in.setValid();
+            hdr.packet_in.ingress_port = standard_metadata.ingress_port;
+        }
+    }
+}
+
+#endif
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