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Message-Id: <20171007.002642.1079626333365040708.davem@davemloft.net>
Date:   Sat, 07 Oct 2017 00:26:42 +0100 (WEST)
From:   David Miller <davem@...emloft.net>
To:     stephen@...workplumber.org
Cc:     willemdebruijn.kernel@...il.com, netdev@...r.kernel.org,
        mst@...hat.com, jasowang@...hat.com, willemb@...gle.com
Subject: Re: [PATCH RFC 1/3] tun: ethtool stats

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Fri, 6 Oct 2017 16:12:45 -0700

> On Fri, 6 Oct 2017 18:37:01 -0400
> Willem de Bruijn <willemdebruijn.kernel@...il.com> wrote:
> 
>> > It looks like you are just exporting the statistics taht are already
>> > through normal path. The purpose of ethtool stats is to provide
>> > statistics unique to the device, not to repeat what is available throug
>> > ip, ifconfig, etc.  
>> 
>> A follow-up patch adds non-standard statistics.
>> 
>> I included these common ones, because the new zerocopy counters
>> are only interesting in relation to tx_packets.
>> 
>> It also seems customary among existing network drivers to include
>> at least these base counters in the ethtool output.
> 
> Only some drivers that slipped through before I started noticing.
> Do Not Repeat.

Agreed, that is a bad practice unless it is being done to export
per-queue versions of those standard netdev statistics.

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