netdev - Re: [PATCH net-next 6/6] be2net: fix to set ecmd->autoneg correctly

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Message-ID: <1312581119.2715.49.camel@bwh-desktop>
Date:	Fri, 05 Aug 2011 22:51:59 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Ajit Khaparde <ajit.khaparde@...lex.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 6/6] be2net: fix to set ecmd->autoneg correctly

On Fri, 2011-08-05 at 15:01 -0500, Ajit Khaparde wrote:
> Set the autonegotation settings correctly based on the port speed.
[...]

Autonegotiation and multi-speed are two entirely different things.

Selecting a single speed doesn't mean turning autoneg off.  If you
enable only 1000BASE-T or only 10GBASE-T, the PHY must still go through
autoneg to determine whether it is the clock master for the link.

Enabling multiple speeds doesn't mean turning autoneg on.  An SFP+ slot
can take 1G and 10G modules but the modules generally won't support
autoneg.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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