[ONOS-7154] Initial INT pipeline implementation

Change-Id: I85829350349c77abfcb14445de290be599573fea
diff --git a/pipelines/basic/src/main/resources/include/custom_headers.p4 b/pipelines/basic/src/main/resources/include/custom_headers.p4
new file mode 100644
index 0000000..035e322
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+++ b/pipelines/basic/src/main/resources/include/custom_headers.p4
@@ -0,0 +1,34 @@
+/*
+ * 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 __CUSTOM_HEADERS__
+#define __CUSTOM_HEADERS__
+struct headers_t {
+    packet_out_header_t packet_out;
+    packet_in_header_t packet_in;
+    ethernet_t ethernet;
+    ipv4_t ipv4;
+    tcp_t tcp;
+    udp_t udp;
+}
+
+struct local_metadata_t {
+    bit<16>       l4_src_port;
+    bit<16>       l4_dst_port;
+    next_hop_id_t next_hop_id;
+}
+
+#endif
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