ixgbe: drop support for UDP in RSS hash generation

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 <alexander.h.duyck@intel.com>
Acked-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index b235aa16290f52383408af9c71a5b5d90a29c709..813d2cb5b4d09b6e13baaeab0ee80c094e744bb4 100644 (file)
--- 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);