[RFC] pcapng: record received RSS hash in pcap file

[Stephen Hemminger]

On Tue, 26 Jul 2022 14:36:19 -0700
Stephen Hemminger <stephen at networkplumber.org> wrote:

> There is an option for recording RSS hash with packets in the
> pcapng standard. This implements this for all received packets.
> 
> There is a corner case that can not be addressed with current
> DPDK API's. If using rte_flow() and some hardware it is possible
> to write a flow rule that uses another hash function like XOR.
> But there is no API that records this, or provides the algorithm
> info on a per-packet basis.
> 
> The current version of wireshark does not display the recorded
> hash option. But if we build it they will come.
> 

Wireshark support for displaying RSS hash is now in a pull request.