netdev - Re: [PATCH RFC 0/2] Control VF link state

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Message-ID: <CAJZOPZJ052r67==xXciyoTmE8TQwXyx5sVgeuR=dQUEpXkd5WQ@mail.gmail.com>
Date:	Fri, 10 May 2013 02:17:33 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>, netdev@...r.kernel.org,
	amirv@...lanox.com, ronye@...lanox.com
Subject: Re: [PATCH RFC 0/2] Control VF link state

On Thu, May 9, 2013 at 6:24 PM, Ben Hutchings <bhutchings@...arflare.com> wrote:
>
> On Wed, 2013-05-08 at 16:45 +0300, Or Gerlitz wrote:
> > Here's a suggestion for API and implementation that lets the admin to
> > configure
> > the link state of the VF / SRIOV eSwitch vPORT. Basically, it has three
> > states
> >
> > Auto -        the VF link state will reflect the PF link state
> >
> > Enable - VF link stat will be always up, traffic from VF to VF can
> >        work even if PF link is down.
>
> It seems like it would be useful to implement these two options on the PF as well.

You mean that PF <--> VF communication on the same node can be made to
work even when the physical link is down? this is a bit problematic to
model/implement I think. Generally speaking it makes things easier to
grasp if PF is considered to be the uplink of the eSwitch whos link is
1:1 as the physical link, but need to think that a bit more.


> Perhaps the default should also be specified?

mmm, not sure if we can require/enforce the same default for all drivers.
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