Dynamic Packet Descriptor 3

Reference Documentation

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Napatech SmartNIC
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Reference Information

This descriptor is suited for TX and includes the wire length as well as color bits in the first 8 bytes of the descriptor. This allows SW to reduce the frame size before TX by modifying the wire length and it allows reduction of the descriptor length down to only 8 bytes while retaining the possibility to encode TX flags such as txIgnore in the color. The default values for the dynamic parts are:

offset0 = outer L3 offset1 = outer L4

descrFormat = 3 descrLength = 22