[RFC 28/40] P2P: add station disassoc

[Johannes Berg]

On Wed, 2011-03-16 at 16:08 +0200, Jouni Malinen wrote:
> On Wed, Jan 05, 2011 at 08:53:24PM +0100, Johannes Berg wrote:
> > +int wpa_supplicant_ap_sta_disassociate(struct wpa_supplicant *wpa_s,
> > +				       const u8 *sta, int reason_code)
> 
> I don't remember whether I already asked this, but do we really need
> separate deauthenticate and disassociate commands exposed through D-Bus?
> I don't really see much point in such a low-level design when the only
> purpose I could think for this is to disconnect a P2P client from the
> group..

Yeah I think you already asked this.

> In addition, there is a higher level question of what exactly this
> command is trying to accomplish. Please note that the P2P client that is
> being deauthenticated or disassociated has all the credentials needed to
> reconnect to the group and it will likely do so automatically. As such,
> this command by itself does not really have any noticeable effect and I
> would rather not expose it if it can cause confusion on the expected
> behavior.. The only way to kick a station away from the group is to
> revoke the PSK that is used to connect and then disconnect the station.
> In practice, this can only be done be terminating and restarting the
> group at this point. Though, I have been thinking of adding support for
> per-STA PSKs into P2P groups to make it easier to properly remove a
> station from the group without having to stop the group.

That is indeed all true, and I've asked myself the same question. I
think it mostly exists to tick some box, I'd personally be happy without
it and will try to get more explanations.

johannes