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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Wed, 23 Mar 2011 03:58:55 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/ath/ath_hal/ar5416 ar5416_ani.c
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adrian      2011-03-23 03:58:55 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ath/ath_hal/ar5416 ar5416_ani.c 
  Log:
  SVN rev 219894 on 2011-03-23 03:58:55Z by adrian
  
  The AR5416+ chips all have MIB counters (which the AR5416 ANI code assumes)
  so there's no need to enable the RX of invalid frames just to do ANI.
  
  The if_ath code and AR5212 ANI code setup the RX filter bits to enable
  receiving OFDM/CCK errors if the device doesn't have the hardware
  MIB counters. It isn't initialising it for the AR5416+ because all of
  those chips have hardware MIB counters.
  
  This fixes the odd (and performance affecting!) situation where if ani
  is enabled (via sysctl dev.ath.X.intmit) then suddenly there's be a very
  large volume of phy errors - which is good to track, but not what was
  intended. Since each PHY error is a received (0 length) frame, it can
  significantly tie up the RX side of things.
  
  Revision  Changes    Path
  1.9       +0 -4      src/sys/dev/ath/ath_hal/ar5416/ar5416_ani.c