From 0e014cb16234c3797aa518d46fe7e1fe91ebcca9 Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Fri, 26 Dec 2008 01:33:18 -0800
Subject: igb: defeature tx head writeback
This patch removes tx head writeback as it was found to not provide a
significant improvement in tx performance and on some systems has been seen
to cause a performance degredation due to partial cache line writes.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/igb/igb.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
(limited to 'drivers/net/igb/igb.h')
diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index 2121b8bc6ea7..c90632524fda 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -43,8 +43,6 @@ struct igb_adapter;
#endif
/* Interrupt defines */
-#define IGB_MAX_TX_CLEAN 72
-
#define IGB_MIN_DYN_ITR 3000
#define IGB_MAX_DYN_ITR 96000
@@ -127,7 +125,8 @@ struct igb_buffer {
/* TX */
struct {
unsigned long time_stamp;
- u32 length;
+ u16 length;
+ u16 next_to_watch;
};
/* RX */
struct {
--
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