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Date:      Wed, 30 May 2018 17:19:07 +0000
From:      "Pieper, Jeffrey E" <jeffrey.e.pieper@intel.com>
To:        Harry Schmalzbauer <freebsd@omnilan.de>, Kevin Bowling <kevin.bowling@kev009.com>
Cc:        freebsd-net <freebsd-net@freebsd.org>, Ryan Stone <rysto32@gmail.com>
Subject:   Re: Testing VF/PF code
Message-ID:  <24FC9F73-99E4-43B4-A05D-D52E96F3B680@intel.com>
In-Reply-To: <a4388a04-4f97-907b-e072-c1c1be1acbbe@omnilan.de>
References:  <4bc71104-349d-10b6-c7a4-0202e124ff98@freebsd.org> <CAFMmRNxzdJFzG4xSG5RVMt3Bv140hoG%2B6QrLBN6Oe%2BtcZTWNDQ@mail.gmail.com> <bfbe39a6-436d-d860-9fc7-ba602cfde0d3@omnilan.de> <CAK7dMtATsyiBRhz%2BcnjendaPc2=qfM4Dnbd7VF0t4RkxLkg5dQ@mail.gmail.com> <a4388a04-4f97-907b-e072-c1c1be1acbbe@omnilan.de>
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I think the biggest hurdle is that for igb, the pf and vf should be split. That was being considered at the same time as the ixgbe/ixgbevf split, but there was little interest at the time.

Jeff

On 5/30/18, 9:13 AM, "owner-freebsd-net@freebsd.org on behalf of Harry Schmalzbauer" <owner-freebsd-net@freebsd.org on behalf of freebsd@omnilan.de> wrote:

    Am 30.05.2018 um 17:53 schrieb 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.
    
    Christmas in summer on the northern hemisphere :-)
    
    Unfortunately the only machine I have available for tests won't do 
    SR-IOV as far as I remember, since this feature is disabled for E3-Xeons.
    
    I can't remember all the details, but I gave up with SR-IOV on any Intel 
    single-socket platform since E5-1600 v3/5 never showed up :-(
    Although FreeBSD wasn't involved, I guess the basic requirements are the 
    same and I don't have a chance to use SR-IOV on E3-Xeon (v2, C203 BearTooth)
    
    Shall I falsify with mps(4)?  I think this supports VFs and I have one 
    in spare.
    
    I'm very sorry that I won't be able to test anything – but if I'm the 
    only igb-VF consumer, not capable of using it currently at all, Ryan 
    might be right with the waste of time...
    
    -harry
    
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