Subject: [net-next-2.6 PATCH 2/5] ixgbe: drop support for UDP in RSS hash generation

From: Jeff Kirsher <[email-masked]>
Date: Mon, 19 Jul 2010 16:59:27 -0700

From: Alexander Duyck <[email-masked]>

This change removes UDP from the supported protocols for RSS hashing.  The
reason for removing this protocol is because IP fragmentation was causing a
network flow to be broken into two streams, one for fragmented, and one for
non-fragmented and this in turn was causing out-of-order issues.

Signed-off-by: Alexander Duyck <[email-masked]>
Acked-by: Don Skidmore <[email-masked]>
Signed-off-by: Jeff Kirsher <[email-masked]>
---

 drivers/net/ixgbe/ixgbe_main.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index b235aa1..813d2cb 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2800,10 +2800,8 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
 		    /* Perform hash on these packet types */
 		mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
 		      | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
-		      | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
 		      | IXGBE_MRQC_RSS_FIELD_IPV6
-		      | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
-		      | IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
+		      | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
 	}
 	IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);