An Efficient TCP/IP Offload Embedded System with Deterministic Buffering Processes

To lower the risk in developing a TCP/IP Off load Embedded System (TOES), one may rely on certain platform containing a single or plurality of embedded microprocessor(s). However, previous work shows that it is not easy to use such a slow-clocked microprocessor(s) to achieve high speed goal. Hence this work proposed an efficient architecture of a TOESas well as buffering processes which guarantee a deterministic response time of allocating host buffers during data transmitting and receiving. The experimental results show that the proposed system achieves 859.86 Mbps in receiving and 789.41 Mbps in transmitting, and meanwhile, saves about 1/2 to 3/4 host CPU power compared with the one using conventional TCP/IP stack.