linux-kernel - Re: [PATCH net-next] atl1c: add 4 RX/TX queue support for Mikrotik 10/25G NIC

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Date:   Mon, 24 May 2021 14:24:16 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gatis@...rotik.com
Cc:     chris.snook@...il.com, kuba@...nel.org, hkallweit1@...il.com,
        jesse.brandeburg@...el.com, dchickles@...vell.com,
        tully@...rotik.com, eric.dumazet@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] atl1c: add 4 RX/TX queue support for Mikrotik
 10/25G NIC

From: Gatis Peisenieks <gatis@...rotik.com>
Date: Mon, 24 May 2021 22:11:15 +0300

> More RX/TX queues on a network card help spread the CPU load among
> cores and achieve higher overall networking performance. The new
> Mikrotik 10/25G NIC supports 4 RX and 4 TX queues. TX queues are
> treated with equal priority. RX queue balancing is fixed based on
> L2/L3/L4 hash.
> 
> This adds support for 4 RX/TX queues while maintaining backwards
> compatibility with older hardware.
> 
> Simultaneous TX + RX performance on AMD Threadripper 3960X
> with Mikrotik 10/25G NIC improved from 1.6Mpps to 3.2Mpps per port.
> 
> Backwards compatiblitiy was verified with AR8151 and AR8131 based
> NICs.
> 
> Signed-off-by: Gatis Peisenieks <gatis@...rotik.com>

This does not apply cleanly to net-next, please respin.

Thank you.