Re: [patch] Link state reporting

[Vojtech Pavlik <vojtech@xxxxxxx>]

On Mon, Nov 26, 2001 at 12:55:57PM -0500, Jeff Garzik wrote:

> There is already two ways to report link state to userspace.  We do not
> need a third.
> 
> First, ETHTOOL_GLINK.  Second, netif_carrier_off causes IFF_RUNNING to
> disappear when the interface is up.

That's from the ethernet point of view. But if I understand correctly,
there is no means for the userspace to be notified of a link state
*change*. And hotplug is quite the way to do that. I'd like it to report
things as they appear and go, be it USB devices, be it
PCI/CardBus/PCMCIA devices, be it virtual devices like input ones, it
even makes sense for char and blockdevices at the interface-to-userspace
layer. And it makes sense for ethernet link status as well ...

-- 
Vojtech Pavlik
SuSE Labs