netdev - Re: [Intel-wired-lan] [PATCH iwl-next v2] igc: Change Tx mode for MQPRIO offloading

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Message-ID: <87y0xuzcmp.fsf@kurt.kurt.home>
Date: Tue, 25 Feb 2025 08:50:38 +0100
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Paul Menzel <pmenzel@...gen.mpg.de>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>, Przemek Kitszel
 <przemyslaw.kitszel@...el.com>, Faizal Rahim
 <faizal.abdul.rahim@...ux.intel.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
 <pabeni@...hat.com>, Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org
Subject: Re: [Intel-wired-lan] [PATCH iwl-next v2] igc: Change Tx mode for
 MQPRIO offloading

On Mon Feb 24 2025, Paul Menzel wrote:
> Dear Kurt,
>
>
> Thank you for the patch.
>
>
> Am 24.02.25 um 11:05 schrieb Kurt Kanzenbach:
>> The current MQPRIO offload implementation uses the legacy TSN Tx mode. In
>> this mode the hardware uses four packet buffers and considers queue
>> priorities.
>
> If I didn’t miss anything, later on you do not specify how many buffers 
> are used after changing the Tx mode.

After changing the Tx mode, the NIC uses four packet buffers as
well. I'll add it to the commit message. Thanks.

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