DPDK Summit 2025

This presentation explains in-depth method/tools for calculating spec, mask and enabling the RSS feature and FDIR steering on any customized imbedded L2 headers scenario. As an example, presentation will walkthrough a real-world use case of an Arista’s deployment i.e. Arista’s customized precision time protocol (PTP ) timestamps packet headers. It will describe the method to calculate spec, mask, create Generic Flow commands and use them to add or delete flow rules to the network adapter hardware for Arista’s customized imbedded L2 headers scenario. And the same method can be used to configure any other similar/customized scenario. Currently, there are few documents available describing about generic flow but there isn’t much information available about how the mask and spec used in configuring these generic flows can be calculated and maps to each other. This results in limiting the use of protocol agnostic filters capability of an ethernet adapter. This presentation will help to understand the method of enabling the RSS feature and FDIR steering on any customized packet headers through protocol agnostic flow offloading method.