netdev - RE: [net-next 01/16] i40e: support VF link state ndo

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Date:	Mon, 17 Mar 2014 21:40:17 +0000
From:	"Williams, Mitch A" <mitch.a.williams@...el.com>
To:	Or Gerlitz <or.gerlitz@...il.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
CC:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	"Sullivan, Catherine" <catherine.sullivan@...el.com>
Subject: RE: [net-next 01/16] i40e: support VF link state ndo



> -----Original Message-----
> From: Or Gerlitz [mailto:or.gerlitz@...il.com]
> Sent: Monday, March 17, 2014 2:24 PM
> To: Kirsher, Jeffrey T
> Cc: David Miller; Williams, Mitch A; netdev@...r.kernel.org;
> gospo@...hat.com; sassmann@...hat.com; Sullivan, Catherine
> Subject: Re: [net-next 01/16] i40e: support VF link state ndo
> 
> On Mon, Mar 17, 2014 at 2:45 PM, Jeff Kirsher
> <jeffrey.t.kirsher@...el.com> wrote:
> > From: Mitch Williams <mitch.a.williams@...el.com>
> > This netdev op allows the PF driver to control the virtual link state of
> > the VF devices. This can be used to deny naughty VF drivers access to the
> wire,
> 
> Does this denial exists in the patch or the current code? where?
> 
> Or.

To clarify: you can manually deny link to a VF with this functionality. This would not automatically find and shut down misbehaving VFs. That functionality is planned but is not yet ready, and would operate on the hardware level.

-Mitch
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