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From: Rui Paulo <rpaulo@FreeBSD.org>
Date: Sun, 25 Jul 2010 17:40:48 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/net80211 ieee80211_sta.c
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rpaulo      2010-07-25 17:40:48 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/net80211         ieee80211_sta.c 
  Log:
  SVN rev 210474 on 2010-07-25 17:40:48Z by rpaulo
  
  MFC r209016, r209022:
   Some odd APs send beacons on the same TX queue as non-beacons. This breaks
   802.11 duplicate detection. Upon looking at the standard, we discover
   that 802.11-2007 says:
   "A receiving QoS STA is also required to keep only the most recent
   cache entry per<Address 2, TID, sequence-number>  triple, storing only
   the most recently received fragment number for that triple. A receiving
   STA may omit tuples obtained from broadcast/multicast or ATIM frames
   from the cache."
  
   To fix this, we just disable duplicate detection for multicast/broadcast
   frames.
  
  Reviewed by:    sam
  Obtained from:  DragonFly
  
  Revision  Changes    Path
  1.26.2.4  +1 -1      src/sys/net80211/ieee80211_sta.c