US Patent 7447795 Multi-purpose switching network interface controller

A network interface controller includes a plurality of scatter gather circuits (104a-104d) connectable to a host via a bus (101). A packet buffer (112) is configured for communication with the scatter gather circuits (104a-104d). A plurality of access circuits (110a-110d) are configured to access external network connections. An optional forwarding engine (108) is selectable to generate routing information corresponding to data received via the access circuits (110a-110d) and to provide the routing information to the packet buffer (112).