[PATCH] wpa_supplicant: work around for drivers lacking direct scan

Derek Taubert dtaubert
Tue Feb 7 15:24:01 PST 2006

On Sun, Jan 29, 2006 at 09:18:35AM -0800, Jouni Malinen wrote:
> On Fri, Jan 27, 2006 at 02:41:34PM -0800, Derek Taubert wrote:
> > This patch helps to find cloaked networks from wireless drivers that
> > don't support a direct scan (such as the ipw2200 pre-WIRELESS_EXT v18).
> > The association request causes the AP to respond, which is then picked
> > up by the scan.
> > 
> > It's a nice alternative to turning on ap_scan=2 because:
> > 1) It can be turned on per network.
> > 2) Explicit security policies aren't required.
> The scan command is expected not to break current association, but this
> change would likely do that. I would like to be able to trigger new
> background scans for finding about roaming and RSN pre-authentication
> candidates.

I see.

> Your patch would make this configurable, so in that sense,
> it should not be an issue for default settings. Anyway, this kind of

Yes, I thought the configuration issue made it worthwhile.

> configuration adds some extra burden on users and/or wpa_supplicant
> integration with network setup scripts since they would need to know
> which drivers require this kind of workaround.
> Which drivers has this been tested with?

Just the ipw2200 v1.0.10, under RHEL AS4 (wireless ext v16).


> -- 
> Jouni Malinen                                            PGP id EFC895FA
> _______________________________________________
> HostAP mailing list
> HostAP at shmoo.com
> http://lists.shmoo.com/mailman/listinfo/hostap

More information about the Hostap mailing list