--- /dev/null
+/*
+ * tcp.h
+ * - TCP Test Wrapper
+ */
+#ifndef _TCP_H_
+#define _TCP_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#define TCP_FIN 0x01
+#define TCP_SYN 0x02
+#define TCP_RST 0x04
+
+extern void TCP_Send(int IF, int AF, const void *IP, short sport, short dport, uint32_t seq, uint32_t ack, uint8_t flags, uint16_t window, size_t data_len, const void *data);
+extern bool TCP_Pkt_Check(size_t len, const void *data, size_t *ofs, int AF, const void *IP, short sport, short dport, uint8_t flags);
+
+#endif
+