igb: change descriptor control thresholds

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This change simplifies the code by setting RX_PTHRESH to 8 for
all devices, as it was unlikely that there was any advantage to
set it at 16 for earlier cards. Additionally TX_WTHRESH is
set to 1 for the 82576 NIC to improve performance by enabling
a minimal amount of write combining when writing back descriptors.

Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Nick Nunley 2010-02-17 01:05:56 +00:00 • committed by David S. Miller

parent fe0592b4be

commit 58fd62f525

1 changed files with 2 additions and 2 deletions

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drivers/net/igb/igb.h

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