netdev - Re: [PATCH net-next] net: dsa: microchip: add MRP software ring support

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Message-ID: <36cbb7aa-1080-4fb8-88f7-2c8da82dd554@prevas.dk>
Date: Fri, 24 Nov 2023 09:28:13 +0100
From: Rasmus Villemoes <rasmus.villemoes@...vas.dk>
To: Vladimir Oltean <olteanv@...il.com>,
 Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc: Woojung Huh <woojung.huh@...rochip.com>, UNGLinuxDriver@...rochip.com,
 Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 netdev@...r.kernel.org, Per Noergaard Christensen <per.christensen@...vas.dk>
Subject: Re: [PATCH net-next] net: dsa: microchip: add MRP software ring
 support

On 22/11/2023 12.35, Vladimir Oltean wrote:
> On Wed, Nov 22, 2023 at 12:20:06PM +0100, Rasmus Villemoes wrote:
>> From: Per Noergaard Christensen <per.christensen@...vas.dk>
>>
>> Add dummy functions that tells the MRP bridge instance to use
>> implemented software routines instead of hardware-offloading.
>>

> 
> Could you please explain a bit the mechanics of this dummy implementation?
> Don't you need to set up any packet traps for MRP PDUs, to avoid
> forwarding them? What ring roles will work with the dummy implementation?

Hm, you're right, of course. We will have to check what went wrong in
our testing, we did believe we had it working, but that can't really be
true. So please ignore this for now, sorry for the noise.

Rasmus