On Mon, Nov 2, 2009 at 4:32 AM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > Currently it is possible to request a scan on only > disabled channels, which could be problematic for > some drivers. Reject such scans, and also ignore > disabled channels that are given. This resuls in > the scan begin/end event only including channels > that are actually used. > > This makes the mac80211 check for disabled channels > superfluous. At the same time, remove the no-IBSS > check from mac80211 -- nothing says that we should > not find any networks on channels that cannot be > used for an IBSS, even when operating in IBSS mode. > > Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Side note that this patch reminds me of. About two days ago I noticed that if my internal card enables channel 12 as its world roaming, I connect to my AP on channel 12 (therefore lifting the passive scan flag), and if I then connect a USB device which disables channel 12 communication will still go on on channel 12 on the old card but the channel will still have been marked as disabled. I figured I'd not here that we currently can trash these types of connections because as noted with this patch we'd disable scanning -- but we only degrade the connection, we don't do something sensible. So when we get a chance we should force a disconnect if a channel we're using all of a sudden becomes disabled. Luis -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
