netdev - Re: [PATCH net v2 0/3] dpaa_eth: A050385 erratum workaround fixes under XDP

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Message-ID: <20210206094825.277fcac5@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Sat, 6 Feb 2021 09:48:25 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Camelia Groza <camelia.groza@....com>,
        maciej.fijalkowski@...el.com, madalin.bucur@....nxp.com
Cc:     davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net v2 0/3] dpaa_eth: A050385 erratum workaround fixes
 under XDP

On Thu,  4 Feb 2021 18:49:25 +0200 Camelia Groza wrote:
> This series addresses issue with the current workaround for the A050385
> erratum in XDP scenarios.
> 
> The first patch makes sure the xdp_frame structure stored at the start of
> new buffers isn't overwritten.
> 
> The second patch decreases the required data alignment value, thus
> preventing unnecessary realignments.
> 
> The third patch moves the data in place to align it, instead of allocating
> a new buffer for each frame that breaks the alignment rules, thus bringing
> an up to 40% performance increase. With this change, the impact of the
> erratum workaround is reduced in many cases to a single digit decrease, and
> to lower double digits in single flow scenarios.

Looks like reply bot got moody.

Applied, thanks everyone!