Illustration of ports, flows, host buffers and streams
This figure shows the naming conventions used for the data flow through the SmartNIC and into the host memory.
Frames from the network are received by physical SmartNIC ports. SmartNIC ports are numbered from 0 to the number of physical SmartNIC ports minus one.
The frames from the ports are merged in arrival time order.
When the frames have passed through the frame decoder, hash and filter, frames are categorized into flows. Flows are groups of frames with the same properties with respect to filtering, port numbers and hash values.
When data is transferred from the SmartNIC to the host buffers in user memory it is done via DMA.