Out of the box Thor with the r38.4.0 installed and the MGBEs in default 10Gx4 mode we see
$ sudo ethtool -A mgbe0_0 tx on
netlink error: Operation not supported
Obviously, we don’t expect Thor’s MGBE to respect the link partner’s Pause Frames if they are not supported. We require that support.
We came across what looks like a similar issue with the MGBE on Orin, but are not clear on how to adapt that to Thor. Thinking some kind of device tree editing is needed?
It would be super-helpful to know the exact steps needed to enable TX pause frames on Thor’s MGBE ports.