On 23 January 2014 13:09, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > On Thu, 2014-01-23 at 08:57 +0100, Michal Kazior wrote: > >> This is actually the tricky part. How do you automatically switch an >> AP interface? You should be able to at least generate CSA IE - true - >> but what about beacon after CSA? You need to update HT IE and VHT IE >> at least. >> >> Perhaps we could split CSA into two parts somehow and make it more >> userspace coordinated. The first part of CSA - announcing it, is >> trivial and can actually be done entirely within mac80211 if I'm not >> mistaken. What needs userspace input is what happens after the >> announcement. This would mean that there is a possible time gap >> between announcement being completed and the actual channel switch & >> operation resuming. > > I believe that even announcing it isn't necessarily possible without > userspace involvement, particularly for things like 11ac's channel > switch wrapper IE and/or operating class changes. Aww, too bad then. But splitting would still be useful (at least in some sense) if you consider CSA to "usable" DFS channels. Michał -- 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
