netdev - Re: [PATCH net-next] net: sfp: add quirk for OEM DFP-34X-2C2 GPON ONU SFP

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Message-ID: <ZcI+7grKa33oLtwc@shell.armlinux.org.uk>
Date: Tue, 6 Feb 2024 14:15:10 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Sergio Palumbo <palumbo.ser@...look.it>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...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, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: sfp: add quirk for OEM DFP-34X-2C2 GPON
 ONU SFP

Hi Sergio,

I did ask for the kernel messages from a specific scenario:

- host that supports 1000base-X and 2500base-X with your quirk
- SFP inserted with LAN_SDS_MODE=1

What I expet to see in the kernel messages is that the system will
use 2500base-X, and a failure.

You claim that the kernel will link at 1000base-X. There is no
mechanism in the kernel for this to happen, and I believe that
if you look at the kernel messages, this will prove my point.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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