[net-next PATCH v2 5/9] mlx4: Add support for UDP tunnel segmentation with outer checksum offload
From: Alexander Duyck <hidden>
Date: 2016-04-29 22:43:35
Subsystem:
mellanox ethernet driver (mlx4_en), mellanox mlx4 core vpi driver, networking drivers, the rest · Maintainers:
Tariq Toukan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This patch assumes that the mlx4 hardware will ignore existing IPv4/v6 header fields for length and checksum as well as the length and checksum fields for outer UDP headers. Signed-off-by: Alexander Duyck <redacted> --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 8bd143dda95d..bce37cbfde24 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c@@ -2358,7 +2358,9 @@ out: /* set offloads */ priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | - NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; + NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; } static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
@@ -2368,7 +2370,9 @@ static void mlx4_en_del_vxlan_offloads(struct work_struct *work) vxlan_del_task); /* unset offloads */ priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | - NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); + NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL); ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 0);
@@ -2992,8 +2996,13 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, } if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { - dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; - dev->features |= NETIF_F_GSO_UDP_TUNNEL; + dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; + dev->features |= NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; + dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; } mdev->pndev[port] = dev;