netdev - RE: ETHTOOL_GSET IOCTL on GigE links

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Message-ID: <46F9780F64AE9945815725F4C0C72CB803026275@hq-exch-1.corp.brocade.com>
Date:	Fri, 1 Jun 2007 16:09:29 -0700
From:	"Jeff Haran" <jharan@...cade.COM>
To:	"Jeff Garzik" <jeff@...zik.org>
Cc:	<linux-net@...r.kernel.org>, "netdev" <netdev@...r.kernel.org>
Subject: RE: ETHTOOL_GSET IOCTL on GigE links

> -----Original Message-----
> From: Jeff Garzik [mailto:jeff@...zik.org] 
> Sent: Friday, June 01, 2007 4:05 PM
> To: Jeff Haran
> Cc: linux-net@...r.kernel.org; netdev
> Subject: Re: ETHTOOL_GSET IOCTL on GigE links
> 
> Jeff Haran wrote:
> > 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?
> 
> The interface does not currently support such enumeration.
> 
> You can certainly attempt forcing a speed, and see what happens.  The 
> driver will either (a) work, (b) refuse and give you an error 
> message, 
> or (c) present you with a situation that requires filing a driver bug 
> report :)
> 
> 	Jeff

Are there any plans in the works to modify the interface to provide this
information?

Thanks,

Jeff Haran
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