On Tue, 2008-06-03 at 21:41 -0400, Dan Williams wrote: > Hi, > > While adding adhoc shared network support to NM, I ran into a few > mac80211 problems. > > 1) doesn't send SIOCGIWAP event on successful adhoc activation (patch > forthcoming) Thanks. > 2) takes a _really_ long time to create an adhoc network. This is > controlled by IEEE80211_IBSS_JOIN_TIMEOUT. Why is that 20 seconds? The > problem here is that wpa_supplicant has an association timer shorter > than IEEE80211_IBSS_JOIN_TIMEOUT and will re-try the connection, > causing mac80211 to reset ifsta->ibss_join_req. FullMAC drivers will > simply look in their scan list (and optionally perform one scan) and if > the IBSS isn't found, create it. I'd really like to > take IEEE80211_IBSS_JOIN_TIMEOUT down to 5 or 7 seconds. This is only > the initial IBSS creation, IBSS merging will still be in effect. I > simply thing 20 seconds is really too long here. Yeah, I don't know why it is that long. Jouni, do you remember maybe? I'm ok with reducing it. > 3) doesn't send NULL SIOCGIWAP disassoc events when the device goes down > or the module is removed. Where's the best place to put the event on > module remove? Huh? Why does that matter, the network interface is going away so...? > 4) Is the association expected to survive a up->down->up sequence? If > not, then we should be sending NULL SIOCGIWAP event whenever dev_close() > gets called. No, it's not, yes, we probably should send that event somewhere. Is it ok to send the event while not associated? > 5) mac80211 requires the device to be down when changing modes. That's > fine; but requires a patch to wpa_supplicant to handle this. This would > cause failures when switching AP that were different modes from NM. > See: > > http://lists.shmoo.com/pipermail/hostap/2008-June/017894.html Don't understand. How can you switch to an IBSS AP? :) It's probably fairly easy to remove this restriction because they all use ieee80211_if_sta internally (sta, ibss, mesh) but since I don't care too much about IBSS and see mesh as being quite different, I have no motivation to try (and test) this. johannes johannes
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