--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+/*>>>>>>>>>>>>>>>>>>>>>>> DEFINITIONS & DECLARATIONS <<<<<<<<<<<<<<<<<<<<*/
+
+#include <tcp.h>
+#include <sys/socket.h>
+
+
+/*>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LOCAL VARIABLES <<<<<<<<<<<<<<<<<<<<<<<<<*/
+
+/*>>>>>>>>>>>>>>>>>>>>>>>>>>>>> IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<*/
+
+
+/**
+ * TCP: Handles TCP-packets according to Receive-handle diagram.
+ *
+ * @param tcp_packet TCP-packet to be handled
+ * @param packetsize Length of the packet
+ * @return ZERO - packet handled successfully;
+ * NON ZERO - packet was not handled (e.g. bad format)
+ */
+int8_t
+handle_tcp(uint8_t * tcp_packet, int32_t packetsize)
+{
+ return -1;
+}
+
+
+/**
+ * NET: This function handles situation when "Destination unreachable"
+ * ICMP-error occurs during sending TCP-packet.
+ *
+ * @param err_code Error Code (e.g. "Host unreachable")
+ * @param packet original TCP-packet
+ * @param packetsize length of the packet
+ * @see handle_icmp
+ */
+void
+handle_tcp_dun(uint8_t * tcp_packet, uint32_t packetsize, uint8_t err_code) {
+}