openflow build environment setup

openflow/include/clicknet/udp.h

@@ -0,0 +1,18 @@
+#ifndef CLICKNET_UDP_H
+#define CLICKNET_UDP_H
+
+/*
+ * <clicknet/udp.h> -- UDP header definitions, based on one of the BSDs.
+ *
+ * Relevant RFCs include:
+ *   RFC768	User Datagram Protocol
+ */
+
+struct click_udp {
+    uint16_t	uh_sport;		/* 0-1   source port		     */
+    uint16_t	uh_dport;		/* 2-3   destination port	     */
+    uint16_t	uh_ulen;		/* 4-5   UDP length		     */
+    uint16_t	uh_sum;			/* 6-7   checksum		     */
+};
+
+#endif