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    • Luis R. Rodriguez's avatar
      ath9k_hw: Fix AR9003 MPDU delimeter CRC check for middle subframes · 9171acc7
      Luis R. Rodriguez authored
      
      
      An A-MPDU may contain several subframes each containing its own
      CRC for the data. Each subframe also has a respective CRC for the
      MPDU length and 4 reserved bits (aka delimeter CRC). AR9003 will
      ACK frames that have a valid data CRC but have failed to pass the
      CRC for the MPDU length, if and only if the subframe is not the
      last subframe in an A-MPDU and if an OFDM phy OFDM reset error has
      been caught. Discarding those subframes results in packet loss under
      heavy stress conditions, an example being UDP video. Since the
      frames are ACK'd by hardware we need to let these frames through
      and process them as valid frames.
      
      Cc: Tushit Jain <tushit.jain@atheros.com>
      Cc: Kyungwan Nam <kyungwan.nam@atheros.com>
      Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      9171acc7
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