netdev - RE: USO / UFO status ?

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Date:   Thu, 31 Oct 2019 10:20:36 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Josh Hunt <johunt@...mai.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>
Subject: RE: USO / UFO status ?

Thank you both for the feedback!

From: Josh Hunt <johunt@...mai.com>
Date: Oct/30/2019, 21:22:32 (UTC+00:00)

> On 10/30/19 12:48 PM, Willem de Bruijn wrote:
> > On Wed, Oct 30, 2019 at 3:16 PM Jose Abreu <Jose.Abreu@...opsys.com> wrote:
> >>
> >> Hi netdev,
> >>
> >> What's the status of UDP Segmentation Offload (USO) and UDP
> >> Fragmentation Offloading (UFO) on current mainline ?
> >>
> >> I see that NETIF_F_GSO_UDP_L4 is only supported by Mellanox NIC's but I
> >> also saw some patches from Intel submitting the support. Is there any
> >> tool to test this (besides the -net selftests) ?
> > 
> > UDP segmentation offload with UDP_SEGMENT is always available with
> > software segmentation. The only driver with hardware offload (USO)
> > merged so far is indeed mlx5. Patches for various Intel NICs are in
> > review.
> > 
> 
> I recently added UDP GSO offload support for ixgbe, igb, and i40e. I saw 
> that Jeff sent the patches to Dave earlier today targeting net-next so 
> you should be able to test with those once they land in net-next.

Well, I'm more interested in implementing it in stmmac. I have some HW 
that supports USO and UFO.

> I also wrote a wrapper script around the selftest benchmark code to do 
> my testing with, and believe the Intel folks used it as part of their 
> validation as well. You can find it attached to this thread:

Thanks!

---
Thanks,
Jose Miguel Abreu