#7825 BLOC 8.2.0 (: can't complete WPA handshake with D-Link WBR-2310

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#7825: can't complete WPA handshake with D-Link WBR-2310
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   Reporter:  dsd        |       Owner:  jcardona            
       Type:  defect     |      Status:  assigned            
   Priority:  blocker    |   Milestone:  8.2.0 (was Update.2)
  Component:  wireless   |     Version:  not specified       
 Resolution:             |    Keywords:  8.2.0:? relnote     
Next_action:  never set  |    Verified:  1                   
  Blockedby:             |    Blocking:                      
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Changes (by jcardona):

  * status:  new => assigned


Comment:

 I agree with dsd's assessment that this a WPA flaw, which was resolved in
 WPA2 (in the latter, the GTK is sent during the 4-way handshake, and not
 immediately after).  We could improve the time it takes to install the
 key, which is currently in the order of 4-5 ms.  The current execution
 path for the SIOCSIWENCODEEXT ioctl() involves a delayed workqueue
 {{{lbs_postpone_association_work()}}} who then wakes up the main driver
 thread {{{lbs_thread()}}}.

 If we make this a direct command (following the work initiated by dcbw for
 other commands) we could probably get down to ~1 ms, which might be
 sufficient for *this AP*.
 In the absence of a better alternative we've started working on trimming
 down the key installation time.

-- 
Ticket URL: <http://dev.laptop.org/ticket/7825#comment:20>
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