Re: [RFC] make wext wireless bits optional and deprecate them
From: Jean Tourrilhes
Date: Mon May 19 2008 - 13:04:09 EST
On Mon, May 19, 2008 at 02:16:08PM +0200, Johannes Berg wrote:
> > Instead of testing for wireless/, best thing would probably be to call
> > SIOCGIWRANGE on the device and if it returns EOPNOTSUP then it's not
> > wireless. Some drivers may have to load firmware to figure out
> > supported rates and encryption capabilities, but to be honest, NM does
> > this to detect wireless devices and I haven't run into any issues in 4
> > years using it. If there are issues with drivers, then we need to fix
> > the driver too.
> I was about to propose calling SIOCGIWNAME since that is what
> wireless-tools do and that linux/wireless.h indicates.
Yes, using SIOCGIWNAME is the right way to do it, it's the
only ioctl that is guarantee to always be present and require minimal
processing from the driver (it should be a static string). If you look
at iwconfig, this is how it does it.
(Sorry for the delay replying, I was chasing kids and
electrical faults this week end).
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