The Implement Of TCP/IP Offload Engine On SoC System

TCP/IP Offload Engine (TOE) can reduce the Operating System’s loading of protocol processing which are trigged by interrupt. This thesis discussed how to process the TCP/IP protocol stack by hardware, and make the operating system more effectiveness and faster network. We implement Offload Engine by SoC (System On Chip) system which is created by FPGA with NIOS process. The TCP/IP head information was processed by custom hardware circuit. This design mainly process protocol head and protocol processing flow, and finish below functions.1. Process ARP request/reply, Ping request/reply, UDP connection and TCP connection.2. Head processing modules for ARP, IP, ICMP, UDP protocols are implemented by hardware.3. UDP/TCP connection management.We only implement ARP protocol processing circuit in our thesis due to time limitation and complexity of TCP/IP protocol. We implement these hardware module on a‘UP3-1C12 Education Kit, Cyclone Edition’development environment. We also evaluate the frequency requirement of this system. Best case, 14.3MHz is enough for 100M Ethernet.