Re: Bug#645055: realtek 8188CE ad-hoc mode not supported

[Ben Hutchings <ben@decadent.org.uk>]

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On Wed, 2011-10-12 at 17:01 +0100, Ben Hutchings wrote:
> On Wed, Oct 12, 2011 at 11:20:31AM -0400, Antoine Beaupré wrote:
> > On Wed, 12 Oct 2011 14:08:32 +0100, Ben Hutchings <ben@decadent.org.uk> wrote:
> > > Can you create an ad-hoc interface like this:
> > > 
> > >     iw dev wlan0 interface add wlan1 type adhoc
> > > 
> > > (you'll need the iw package).
> > 
> > Interesting - this works. Didn't know of the iw tool. But this creates a
> > separate interface, kind of odd!
> > 
> > The adhoc mode works like that. I am not sure I understand why it
> > doesn't work with iwconfig, can you enlighten me?
> 
> iwconfig uses the original WEXT (wireless extensions) configuration
> interface.  This interface was never very well specified and was
> implemented in inconsistent ways by different drivers.
> 
> The newer configuration interface used by iw, Network Manager and
> other tools is nl80211 (netlink for IEEE 802.11).
[...]

I looked a little further and saw that nl80211 does support changing
interface type (mode).  But this driver (rtl8192ce) only supports
creating new interfaces, not changing their type.

Should mac80211 drivers generally support changing interface type
(change_interface operation)?

Ben.

-- 
Ben Hutchings
Quantity is no substitute for quality, but it's the only one we've got.

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