net: qualcomm: rmnet: Add support for GSO

Real devices may support scatter gather(SG), so enable SG on rmnet
devices to use GSO. GSO reduces CPU cycles by 20% for a rate of
146Mpbs for a single stream TCP connection.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index f7f57ce..570a227 100644 (file)
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -190,6 +190,7 @@ int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
 
        rmnet_dev->hw_features = NETIF_F_RXCSUM;
        rmnet_dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+       rmnet_dev->hw_features |= NETIF_F_SG;
 
        rc = register_netdevice(rmnet_dev);
        if (!rc) {