netdev - Re: [patch net-next RFC 0/4] introduce infrastructure for support of switch chip datapath

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Message-ID: <20140402130437.24885fd8@nehalam.linuxnetplumber.net>
Date:	Wed, 2 Apr 2014 13:04:37 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	"John W. Linville" <linville@...driver.com>
Cc:	Scott Feldman <sfeldma@...ulusnetworks.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Jiri Pirko <jiri@...nulli.us>,
	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	Thomas Graf <tgraf@...g.ch>, netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	dborkman <dborkman@...hat.com>, ogerlitz <ogerlitz@...lanox.com>,
	jesse <jesse@...ira.com>, pshelar <pshelar@...ira.com>,
	azhou <azhou@...ira.com>, Ben Hutchings <ben@...adent.org.uk>,
	jeffrey.t.kirsher@...el.com, vyasevic <vyasevic@...hat.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Lennert Buytenhek <buytenh@...tstofly.org>,
	Shrijeet Mukherjee <shm@...ulusnetworks.com>
Subject: Re: [patch net-next RFC 0/4] introduce infrastructure for support
 of switch chip datapath

On Wed, 2 Apr 2014 15:29:15 -0400
"John W. Linville" <linville@...driver.com> wrote:

> I've seen the 'ethtool -S' example before and I guess it is valid.
> Still, is it worth the confusion of having a mostly useless/unique
> netdev just to reuse an ethtool ioctl?  Maybe, I guess...?

ethtool is actually the most worthless part of the API.
It can't be monitored, is ioctl based but and the statistics are device
dependent making them useless for monitoring applications.
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