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Message-ID: <20231108142640.tmly4ifgsoeo7m3e@skbuf>
Date: Wed, 8 Nov 2023 16:26:40 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Hans Ulli Kroll <ulli.kroll@...glemail.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Michał Mirosław <mirq-linux@...e.qmqm.pl>,
	Andrew Lunn <andrew@...n.ch>, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v3 1/4] net: ethernet: cortina: Fix MTU max setting

On Tue, Nov 07, 2023 at 10:54:26AM +0100, Linus Walleij wrote:
> The RX max frame size is over 10000 for the Gemini ethernet,
> but the TX max frame size is actually just 2047 (0x7ff after
> checking the datasheet). Reflect this in what we offer to Linux,
> cap the MTU at the TX max frame minus ethernet headers.
> 
> Use the BIT() macro for related bit flags so these TX settings
> are consistent.

What does this second paragraph intend to say? The patch doesn't use the
BIT() macro.

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