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Re: [PATCH] mac80211: fix rate_control_send_low warnings for delbas

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On Wed, 2010-09-29 at 10:16 -0700, Luis R. Rodriguez wrote:

> > 2. NL80211_CMD_ASSOCIATE to newly authenticated AP from user space
> >
> >        - Clean up any existing BA session with an AP, if any.
> >        Here the assumption is, ieee80211_work_work() has already
> >        configured the device back to it's operating channel (the
> >        old one) after the authentication is complete with the new
> >        AP. This should have happened part of 1.
> >        - Start the association process with the new AP.
> 
> No see, I believe we actually get the association response and *then*
> we teardown the BA agreements. Let me review this some more today.

No, Vasanth's right, but there's a race:

 * we go off-channel
 * we send auth
 * we get auth
 * we notify wpa_s
 * wpa_s asks for assoc         | these aren't ordered
 * we disassoc                  | quite right but it's
 * we return from off-channel   | hard to avoid ...
 * we assoc to new AP

johannes

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