netdev: ethtool RXHASH flag

This adds ethtool and device feature flag to allow control
of receive hashing offload.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index f4cb6b6299d9..73c81edde8d9 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -121,7 +121,7 @@ int ethtool_op_set_ufo(struct net_device *dev, u32 data)
  * NETIF_F_xxx values in include/linux/netdevice.h
  */
 static const u32 flags_dup_features =
-        (ETH_FLAG_LRO | ETH_FLAG_NTUPLE);
+        (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
 
 u32 ethtool_op_get_flags(struct net_device *dev)
 {
@@ -152,6 +152,11 @@ int ethtool_op_set_flags(struct net_device *dev, u32 data)
                 features &= ~NETIF_F_NTUPLE;
         }
 
+        if (data & ETH_FLAG_RXHASH)
+                features |= NETIF_F_RXHASH;
+        else
+                features &= ~NETIF_F_RXHASH;
+
         dev->features = features;
         return 0;
 }