igb: Update RXDCTL/TXDCTL configurations
authorAlexander Duyck <alexander.h.duyck@intel.com>
Fri, 26 Aug 2011 07:43:27 +0000 (07:43 +0000)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Tue, 20 Sep 2011 06:56:33 +0000 (23:56 -0700)
This change cleans up the RXDCTL and TXDCTL configurations and optimizes RX
performance by allowing back write-backs on all hardware other than 82576.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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