netdev - Re: [PATCH net] igb: Enable RSS for Intel I211 Ethernet Controller

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Message-ID: <20201221141134.55ad507a@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 21 Dec 2020 14:11:34 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Nick Lowe <nick.lowe@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net] igb: Enable RSS for Intel I211 Ethernet Controller

On Mon, 21 Dec 2020 19:15:49 +0000 Nick Lowe wrote:
> The Intel I211 Ethernet Controller supports 2 Receive Side Scaling (RSS) queues.
> It should not be excluded from having this feature enabled.
> 
> Via commit c883de9fd787b6f49bf825f3de3601aeb78a7114
> E1000_MRQC_ENABLE_RSS_4Q was renamed to E1000_MRQC_ENABLE_RSS_MQ to
> indicate that this is a generic bit flag to enable queues and not
> a flag that is specific to devices that support 4 queues
> 
> The bit flag enables 2, 4 or 8 queues appropriately depending on the part.
> 
> Tested with a multicore CPU and frames were then distributed as expected.
> 
> This issue appears to have been introduced because of confusion caused
> by the prior name.
> 
> Signed-off-by: Nick Lowe <nick.lowe@...il.com>

Please repost CCing the maintainers.