netdev - Re: ETHTOOL_GSET IOCTL on GigE links

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Date:	Fri, 01 Jun 2007 15:59:29 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jharan@...cade.COM
Cc:	jeff@...zik.org, linux-net@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: ETHTOOL_GSET IOCTL on GigE links

From: "Jeff Haran" <jharan@...cade.COM>
Date: Fri, 1 Jun 2007 15:51:18 -0700

> OK, but my question remains. In the case where a device supports one set
> of speeds via autonegotiation and another set via forcing, how does one
> tell which speeds can be forced and which can be autonegotiated?

Unfortunately, as you have noted, this information is not
given at the moment.

I got bit by this the other week when I wanted to try forcing
gigabit on a tg3 and the driver wouldn't allow it because it
only allows forcing link speeds at 10/100 on copper links.
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