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

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Date:   Mon, 1 Feb 2021 11:45:45 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>
Cc:     "linux-wired-list@...ematt.me" <linux-wired-list@...ematt.me>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "nick.lowe@...il.com" <nick.lowe@...il.com>
Subject: Re: [PATCH net] igb: Enable RSS for Intel I211 Ethernet Controller

On Mon, 1 Feb 2021 18:32:50 +0000 Nguyen, Anthony L wrote:
> On Mon, 2021-02-01 at 08:47 -0800, Jakub Kicinski wrote:
> > On Sun, 31 Jan 2021 18:17:11 -0500 Matt Corallo wrote:  
> > > Given this fixes a major (albeit ancient) performance regression,
> > > is
> > > it not a candidate for backport? It landed on Tony's dev-queue
> > > branch
> > > with a Fixes tag but no stable CC.  
> > 
> > Tony's tree needs to get fed into net, then net into Linus's tree and
> > then we can do the backport :(  
> 
> The behavior looks to have always been since support was introduced
> with f96a8a0b7854 ("igb: Add Support for new i210/i211 devices."). I
> was unable to determine the original reason for excluding it so I was
> planning on sending through net-next as added functionality, however, I
> will go ahead and send this through net and add it to the current
> series that I need to make changes to.

Hm, no need for net if it's not really a regression IMO. Not after -rc6.

Matt, would you mind clarifying if this is indeed a regression for i211?