Testing VF/PF code

[Kevin Bowling]

Harry,

I wasn’t aware of anyone desiring vf support for igb but I’ll take a look
at it for you if you can test -current with patches when I’m ready. My
motive is more to validate and refine the iflib functionality and this is a
good exercise.

On Wed, May 30, 2018 at 8:20 AM Harry Schmalzbauer <freebsd at omnilan.de>
wrote:

> Am 30.05.2018 um 16:45 schrieb Ryan Stone:
> > On Tue, May 29, 2018 at 12:58 PM Sean Bruno <sbruno at freebsd.org> wrote:
> >> Does anyone have a process for testing the VF drivers (ixgbe igb, etc)
> >> in FreeBSD without actually firing up linux to instantiate a VM or using
> >> EC2?
> > We have native support for creating VFs for ixl and ixgbe (and cxgbe).
> > For igb you're out of luck (but SR-IOV on igb is kind of a waste of
> > time anyway)
>
> I'd like to note that I'm strongly missing SR-IOV for if_igb(4) and I
> don't consider it as a waste of time, speaking of the time needed for
> the setup – not the time to make the code happen; that's nothing I can
> achive (not even estimate) so I won't try to judge about the sense of
> that time relation...
>
> 82576 is a wonderful piece of hardware (mostly true for i350 also) and
> I'm missing the ability to use VFs for jails and bhyve(8) likewise with
> these NICs.
> There are still many appliances that don't need 10GE rates and could
> easily cope with FastEthernet rates. For such appliances,
> security/design considerations have much more weight than throughput,
> which VFs would greatly support implementation simplicity/consistency.
> So igbv(4) is on top of my christmas wishlist ;-)
> Two or three of the 2-port cards and a LACP switch-stack (GbE) make a
> nice platform for a dozend VMs/jails – affordable by means of financial
> and electrical power budget likewise.
>
> No tech aspects/justification here, just my experience based opinion.
>
> Thanks,
>
> -harry
>
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