diff --git a/pipelines/basic/src/main/resources/include/int_definitions.p4 b/pipelines/basic/src/main/resources/include/int_definitions.p4
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+++ b/pipelines/basic/src/main/resources/include/int_definitions.p4
@@ -0,0 +1,33 @@
+/*
+ * 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.
+ */
+
+/* -*- P4_16 -*- */
+#ifndef __INT_DEFINE__
+#define __INT_DEFINE__
+
+#include "defines.p4"
+
+/* indicate INT at LSB of DSCP */
+const bit<6> INT_DSCP = 0x1;
+
+typedef bit<48> timestamp_t;
+typedef bit<32> switch_id_t;
+
+const bit<8> INT_HEADER_LEN_WORD = 4;
+
+const bit<8> CPU_MIRROR_SESSION_ID = 250;
+
+#endif
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