netdev - Re: [PATCH] usbnet: Do not implement ethtool get

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Date:	Tue, 3 Nov 2009 02:41:27 -0700
From:	David Brownell <david-b@...bell.net>
To:	David Miller <davem@...emloft.net>
Cc:	ben@...adent.org.uk, greg@...ah.com, jacmet@...site.dk,
	steve.glendinning@...c.com, netdev@...r.kernel.org
Subject: Re: [PATCH] usbnet: Do not implement ethtool get_link() if link state is unknown

On Tuesday 03 November 2009, David Miller wrote:
> > Having two tables for this is needlessly ugly.
> 
> Yes, it's really cruddy how the USB network driver tries to share
> so much state amongst such very different devices :-)

That framework just grew ... started out as one driver,
nearly ten years back (yow!!), then generalized.  Folk
seemed to appreciate not reinventing some stuff.  ;)

If it had started out with this many devices, it might have
looked more like a library.  Sharing code implies sharing
at least some state representations; the balance could might
be worth shifting by now.


> All kidding aside, I think the alternative is for the USB network
> driver to call ethtool_op_get_link() if it cannot determine the
> link state in hardware.

There's usbnet_get_link() which does just that.  But
there may be some ancient debris confusing things.
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