[PATCH] MFP: Clear IGTK

[Kel Modderman]

On Tuesday 16 February 2010 10:13:40 Masashi Honma wrote:
> (2010/02/15 19:26), Kel Modderman wrote:
> > ioctl[SIOCSIWENCODEEXT]: Invalid argument
> > Driver did not support SIOCSIWENCODEEXT
> > wpa_driver_wext_set_key: alg=0 key_idx=5 set_tx=0 seq_len=0 key_len=0
> > ioctl[SIOCSIWENCODEEXT]: Invalid argument
> > Driver did not support SIOCSIWENCODEEXT
> > ---
> >
> > This has caused a small amount of concern and questions about why these
> > new messages appear in wpa_supplicant 0.6.10 and not in 0.6.9. Is this
> > something not all drivers support?
> 
> The fourth and fifth keys are used for IEEE 802.11w (management frame
> protection). As far as I know, only ath9k driver supports this.
> 
> If you are not using IEEE 802.11w, you can erase these messages with
> commenting out CONFIG_IEEE80211W=y option.

Thats probably not an option, because the configuration is for the Debian
and Ubuntu wpasupplicant package which passes onto users as many
features that make sense.

Its just that many people will question why they see these new 'scary' looking
messages when they upgrade from 0.6.9 -> 0.6.10 using their package management
software.

Is there a way to detect if a driver supports this operation and only try and
go ahead in that case?

Thanks, Kel.