netdev - Re: [PATCH net-next v2 0/8] ethtool: add pause frame stats

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Date:   Mon, 14 Sep 2020 09:54:32 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Vladimir Oltean <olteanv@...il.com>, davem@...emloft.net,
        netdev@...r.kernel.org, mkubecek@...e.cz,
        michael.chan@...adcom.com, tariqt@...dia.com, saeedm@...dia.com,
        alexander.duyck@...il.com, andrew@...n.ch
Subject: Re: [PATCH net-next v2 0/8] ethtool: add pause frame stats

On Mon, 14 Sep 2020 09:25:44 -0700 Florian Fainelli wrote:
> >> Can we consider using get_ethtool_stats and ETH_SS_PAUSE_STATS as a
> >> stringset identifier? That way there is a single point within driver to
> >> fetch stats.  
> > 
> > Can you say more? There are no strings reported in this patch set.  
> 
> What I am suggesting is that we have a central and unique method for 
> drivers to be called for all ethtool statisitcs to be obtained, and not 
> create another ethtool operation specifically for pause stats.

That won't work for statistics which correspond to a non-singleton
object, like queue stats.

> Today we have get_ethtool_stats and a stringset argument that tells you 
> which type of statistic to return. I am not suggesting that we return 
> strings or that it should be necessary for fetching pause stats.

A multiplexer call or a call that dumps everything and then core picks
out what it needs?