linux-kernel - Re: [PATCH iwl-next v3 16/18] idpf: add support for XDP on Rx

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Message-ID: <a151336a-eda4-4f44-9ab5-da79e7712838@intel.com>
Date: Tue, 5 Aug 2025 18:09:40 +0200
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: <intel-wired-lan@...ts.osuosl.org>, Michal Kubiak
	<michal.kubiak@...el.com>, Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, "Paolo
 Abeni" <pabeni@...hat.com>, Alexei Starovoitov <ast@...nel.org>, "Daniel
 Borkmann" <daniel@...earbox.net>, Simon Horman <horms@...nel.org>,
	<nxne.cnse.osdt.itp.upstreaming@...el.com>, <bpf@...r.kernel.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH iwl-next v3 16/18] idpf: add support for XDP on Rx

From: Jakub Kicinski <kuba@...nel.org>
Date: Fri, 1 Aug 2025 15:33:43 -0700

> On Wed, 30 Jul 2025 18:07:15 +0200 Alexander Lobakin wrote:
>> Use __LIBETH_WORD_ACCESS to parse descriptors more efficiently when
>> applicable. It really gives some good boosts and code size reduction
>> on x86_64.
> 
> Could you perhaps quantify the goodness of the boost with a number? :)

Sure, only a matter of switching this definition and running the tests
(and bloat-o-meter).
Intel doesn't allow us to publish raw numbers (Gbps/Mpps), I hope the
diff in percents (+ bloat-o-meter output) would be enough?

Thanks,
Olek