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From: Rui Paulo <rpaulo@FreeBSD.org>
Date: Thu, 10 Jun 2010 20:58:34 +0000 (UTC)
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Subject: cvs commit: src/sys/net80211 ieee80211_sta.c
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rpaulo      2010-06-10 20:58:34 UTC

  FreeBSD src repository

  Modified files:
    sys/net80211         ieee80211_sta.c 
  Log:
  SVN rev 209016 on 2010-06-10 20:58:34Z by rpaulo
  
  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
  MFC after:      4 weeks
  Obtained from:  DragonFly
  
  Revision  Changes    Path
  1.32      +1 -1      src/sys/net80211/ieee80211_sta.c