[PATCH] sky2: receive queue watermark tweak

This patch makes the receive performance on some systems go from
714MB/s to 941MB/s. It adjusts the watermark of the receive queue
to be lower, thereby avoiding excess hardware flow control. This is
most important on the systems which have little/no additional buffering.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 7760545edbf2..a63f6057b2ea 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -680,6 +680,7 @@ enum {
                           BMU_FIFO_ENA | BMU_OP_ON,
 
         BMU_WM_DEFAULT = 0x600,
+        BMU_WM_PEX     = 0x80,
 };
 
 /* Tx BMU Control / Status Registers (Yukon-2) */