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net/mlx4_en: Add support for UDP tunnel segmentation with outer checksum offload 

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 <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2016-05-02 09:38:30 -07:00 committed by David S. Miller
parent b1dc497b28
commit 3c9346b240
1 changed files with 13 additions and 4 deletions
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17
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -2358,7 +2358,9 @@ static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
/* 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;