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Message-ID: <CACRpkdY2UiFyTvF=zuk-rSZBi+yH6cP-QRkegMgc3wf=9JD_Wg@mail.gmail.com>
Date:   Thu, 2 Nov 2023 23:09:59 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v3] net: dsa: tag_rtl4_a: Bump min packet size

On Thu, Nov 2, 2023 at 7:43 PM Florian Fainelli <f.fainelli@...il.com> wrote:

> Looking at drivers/net/ethernet/cortina/gemini.c, should not we account
> for when the MAC is used as a conduit and include the right amount of
> "MTU" bytes? Something like this (compile tested only):

The DSA core already fixes this by adding the tag size to the MTU
of the conduit interface, so netdev->mtu is already 1504 for this
switch.

I found other oddities though so I'm digging into the driver!

Thanks,
Linus Walleij

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