Re: [PATCH net-next 5/5] net: dsa: mxl862xx: add SerDes ethtool statistics

[Andrew Lunn]

> The firmware also exposes self-test via PRBS and BERT, which also
> doesn't fit the ethtool self-test model very well (which currently
> supports only MAC-level and PHY-level loopback tests, with no way to
> represent the PCS/SerDes-level)...

Where was a presentation about this at last years netdev conference
and a long discussion with Alex at Meta about how to expose PRBS the
fbnic has. It is probably the same PCS or similar PCS, since they
licensed it as well.

   Andrew