netdev - Re: [PATCH net-next 0/2] Add rudimentary SFP module quirk support

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Message-Id: <20191120.222907.2217072137925598366.davem@davemloft.net>
Date:   Wed, 20 Nov 2019 22:29:07 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     linux@...linux.org.uk
Cc:     andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/2] Add rudimentary SFP module quirk support

From: Russell King - ARM Linux admin <linux@...linux.org.uk>
Date: Wed, 20 Nov 2019 11:39:00 +0000

> The SFP module EEPROM describes the capabilities of the module, but
> doesn't describe the host interface.  We have a certain amount of
> guess-work to work out how to configure the host - which works most
> of the time.
> 
> However, there are some (such as GPON) modules which are able to
> support different host interfaces, such as 1000BASE-X and 2500BASE-X.
> The module will switch between each mode until it achieves link with
> the host.
> 
> There is no defined way to describe this in the SFP EEPROM, so we can
> only recognise the module and handle it appropriately.  This series
> adds the necessary recognition of the modules using a quirk system,
> and tweaks the support mask to allow them to link with the host at
> 2500BASE-X, thereby allowing the user to achieve full line rate.

Series applied, thanks.