Re: A station can't reconnect after it wakes up

[Johannes Berg <johannes@sipsolutions.net>]

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On Fri, 2009-09-11 at 02:03 +0400, Igor Perminov wrote:

> Jouni suggests to not buffer Auth/Assoc frames at all, independently of
> station's PS state. 

Ok, works for me.

> I think, it isn't enough, because an AP should send
> a number of EAPOL Key frames after that, which are data frames and
> therefore will be buffered anyway.

That's not a problem though since the handshake will be in data frames
and synchronise the PS state on both ends via the sleep bit.

> I think mac80211 in AP mode should reset WLAN_STA_PS flag of the station
> (and purge frames having been buffered previously if any) on an event
> indicating beginning of authentication.
> The event may be one of the following:
> A) An Auth frame being received from the station.
> B) An Auth frame being sent to the station.
> C) A special API call from an application (hostapd), when it is
> receiving an Auth frame from the station and is beginning
> authentication/association.
> 
> Johannes, what do you think of these approaches?

I think this is not necessary. Just make sure that auth/assoc frames
aren't buffered.

johannes

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