From 0e014cb16234c3797aa518d46fe7e1fe91ebcca9 Mon Sep 17 00:00:00 2001 From: Alexander Duyck 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 Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/e1000_defines.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/igb/e1000_defines.h') diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h index c5fe784c9e3..40d03426c12 100644 --- a/drivers/net/igb/e1000_defines.h +++ b/drivers/net/igb/e1000_defines.h @@ -323,6 +323,7 @@ #define E1000_TXD_CMD_IFCS 0x02000000 /* Insert FCS (Ethernet CRC) */ #define E1000_TXD_CMD_RS 0x08000000 /* Report Status */ #define E1000_TXD_CMD_DEXT 0x20000000 /* Descriptor extension (0 = legacy) */ +#define E1000_TXD_STAT_DD 0x00000001 /* Descriptor Done */ /* Extended desc bits for Linksec and timesync */ /* Transmit Control */ -- cgit v1.2.3-70-g09d2