Ethernet DDI

Version 5.0 of the ChorusOS operating system provides an extended version of the Ethernet Device DDI (ETHER_VERSION_1 ). The extended DDI enables the driver to avoid making an extra copy of the frame buffer to or from the device DMA buffer. It is therefore possible to send and receive ethernet frames directly to and from the client buffers.

The extended DDI also supports TCP/UDP hardware checksum on reception and transmission.