[Bridge] Bridge code enhancement (link state detection) and bug fix. (patches included).

[Mark Ruijter]

Stephen Hemminger wrote:

> 
> Could you split out the link state monitoring, and look at bonding to see
> how they are doing it?
> 
> I have a fix for vlan code that passes MII and ethtool requests from the virtual
> to physical device, so the bridge code wouldn't need to the hack about root device.
> 

Stephen,

I've attached two patches that implement link state monitoring as 
described above.

De bridge-utils patch also fixes a small bug:

./brctl stp TEST
Segmentation fault

--
Mark Ruijter.
bridge at siennax.com
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