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SubjectRe: [PATCH 12/15] habanalabs/gaudi: add debugfs entries for the NIC
On Thu, 10 Sep 2020 23:17:59 +0300 Oded Gabbay wrote:
> > Doesn't seem like this one shows any more information than can be
> > queried with ethtool, right?
> correct, it just displays it in a format that is much more readable

You can cat /sys/class/net/$ifc/carrier if you want 0/1.

> > > nic_mac_loopback
> > > is to set a port to loopback mode and out of it. It's not really
> > > configuration but rather a mode change.
> >
> > What is this loopback for? Testing?
>
> Correct.

Loopback test is commonly implemented via ethtool -t

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