[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <b1c10539-4d47-4752-8613-785b0ad83f5e@lunn.ch>
Date: Sun, 16 Jun 2024 03:23:17 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Paul Barker <paul.barker.ct@...renesas.com>
Cc: Sergey Shtylyov <s.shtylyov@....ru>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Niklas Söderlund <niklas.soderlund+renesas@...natech.se>,
Biju Das <biju.das.jz@...renesas.com>,
Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Mitsuhiro Kimura <mitsuhiro.kimura.kc@...esas.com>,
netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [net-next PATCH 2/2] net: ravb: Fix R-Car RX frame size limit
On Sat, Jun 15, 2024 at 11:30:38AM +0100, Paul Barker wrote:
> The RX frame size limit should not be based on the current MTU setting.
> Instead it should be based on the hardware capabilities.
This is a bit odd. MTU is Maximum Transmission Unit, so clearly is
about Tx. MRU does not really exist. Does TCP allow for asymmetric
MTU/MRU? Does MTU discovery work correctly for this?
In general, it seems like drivers implement min(MTU, MRU) and nothing
more. Do you have a real use case for this asymmetry?
Andrew
Powered by blists - more mailing lists