Re: [PATCH v5 net-next 3/3] net: mscc: ocelot: use bulk reads for stats

Colin Foster
2022-02-08T16:50:02Z

On Tue, Feb 08, 2022 at 03:45:15PM +0000, Vladimir Oltean wrote:
> On Tue, Feb 08, 2022 at 07:41:56AM -0800, Colin Foster wrote:
> > I see that now. It is confusing and I'll clear it up. I never caught
> > this because I'm testing in a setup where port 0 is the CPU port, so I
> > can't get ethtool stats. Thanks!
>
> You can retrieve the stats on the CPU port, as they are appended to the
> ethtool stats of the DSA master, prefixed with "p%02d_", cpu_dp->index.
>
> ethtool -S eth0 | grep -v ': 0' # where eth0 is the DSA master

Thanks for this hint. I didn't even think to go looking for it since the
DSA Documenation mentions an "inability to fetch CPU port statistics
counters using ethtool." I see now that this bullet point is from 2015,
and probably should be removed entirely.