netdev - Re: [PATCH iwl-next v4 0/4] igb: Add support for AF

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Date: Thu, 27 Jun 2024 09:07:55 +0200
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Sriram Yagnaraman <sriram.yagnaraman@....tech>
Cc: intel-wired-lan@...ts.osuosl.org, bpf@...r.kernel.org,
 netdev@...r.kernel.org, Jesse Brandeburg <jesse.brandeburg@...el.com>,
 Tony Nguyen <anthony.l.nguyen@...el.com>, "David S . Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Alexei Starovoitov
 <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Jesper Dangaard
 Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>,
 Björn Töpel <bjorn@...nel.org>, Magnus Karlsson
 <magnus.karlsson@...el.com>,
 Maciej Fijalkowski <maciej.fijalkowski@...el.com>, Jonathan Lemon
 <jonathan.lemon@...il.com>, Sriram Yagnaraman <sriram.yagnaraman@....tech>
Subject: Re: [PATCH iwl-next v4 0/4] igb: Add support for AF_XDP zero-copy

Hi Sriram,

On Fri Aug 04 2023, Sriram Yagnaraman wrote:
> The first couple of patches adds helper funcctions to prepare for AF_XDP
> zero-copy support which comes in the last couple of patches, one each
> for Rx and TX paths.
>
> As mentioned in v1 patchset [0], I don't have access to an actual IGB
> device to provide correct performance numbers. I have used Intel 82576EB
> emulator in QEMU [1] to test the changes to IGB driver.

I gave this patch series a try on a recent kernel and silicon
(i210). There was one issue in igb_xmit_zc(). But other than that it
worked very nicely.

It seems like it hasn't been merged yet. Do you have any plans for
continuing to work on this?

Thanks,
Kurt

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