netdev - RE: [net-next 9/9] igb: Add ethtool support to configure number of channels

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Date:	Wed, 30 Oct 2013 20:30:43 +0000
From:	"Wyborny, Carolyn" <carolyn.wyborny@...el.com>
To:	Ben Hutchings <bhutchings@...arflare.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
CC:	"davem@...emloft.net" <davem@...emloft.net>,
	Laura Mihaela Vasilescu <laura.vasilescu@...edu.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>
Subject: RE: [net-next  9/9] igb: Add ethtool support to configure number of
 channels

> -----Original Message-----
> From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org]
> On Behalf Of Ben Hutchings
> Sent: Tuesday, October 01, 2013 8:59 AM
> To: Kirsher, Jeffrey T
> Cc: davem@...emloft.net; Laura Mihaela Vasilescu; netdev@...r.kernel.org;
> gospo@...hat.com; sassmann@...hat.com
> Subject: Re: [net-next 9/9] igb: Add ethtool support to configure number of
> channels
> 
[..]
> In case this fails, is the interface in a consistent state where is it safe to
> reconfigure the interface again or to unbind the driver?
> 
> If it fails, and the interface was up, shouldn't it call dev_close() so that it's
> obviously down and the user can then try to bring it up again?
> 
> Ben.

Good question.  I was delayed in replying as I was giving Laura a chance to reply to this thread.  

We call our close routine igb_close(), if the device is up.  This does not call dev_close() specifically, however it’s a good suggestion for the error case.  I'll update the patch.    

Thanks,

Carolyn

Carolyn Wyborny 
Linux Development 
Networking Division 
Intel Corporation