In this chapter
This chapter describes the port merging process, where frames from multiple ports on a single SmartNIC are merged.
Each MAC outputs frames from a port on the SmartNIC. The port merger combines the frames from different ports and forwards them to the subsequent blocks.
Line-rate performance based on frame length
Line-rate frame handling is provided for frames according to the table in Performance. Undersized frames (shorter than 64 bytes) might be discarded in the port merger, if such frames are received frequently. However, the port merger contains a small buffer for each port, so bursts of short frames can be handled and forwarded in the processing pipe.