29/06/2020 23:07, David Liu:
> Hello all,
>
> I will be implementing a test in DTS for RSS Key Update.
> http://doc.dpdk.org/guides/nics/features.html#rss-key-update
>
> To my understanding, this feature will test the ability to configure the
> hash key of the ports. If that is incorrect, please let me know.
>
> Configure the port RSS hash key in testpmd and check if the new key will be
> kept. Test configure the hash key that is longer than the max length and
> shorter than the max length.
>
> Then start sending in packets with different source and destination IP
> addresses. Ensure the ports are still able to calculate the hash value from
> the incoming packets.

Updating the key should change the destination queue of the packets.
By setting up multi-queue Rx and choosing IP addresses accordingly,
you can see packets arriving on the expected queue.

> Please let me know if there is anything else need to be tested,

A related test could be to read the computed hash in the mbuf metadata.