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mlx4/en_netdev: allow offloading VXLAN over VLAN 

ConnectX-3 Pro can offload transmission of VLAN packets with VXLAN inside:
enable tunnel offloads in dev->vlan_features, like it's done with other
NIC drivers (e.g. be2net and ixgbe).

It's no more necessary to change dev->hw_enc_features when VXLAN are added
or removed, since .ndo_features_check() already checks for VXLAN packet
where the UDP destination port matches the configured value. Just set
dev->hw_enc_features when the NIC is initialized, so that overlying VLAN
can correctly inherit the tunnel offload capabilities.

Changes since v1:
- avoid flipping hw_enc_features, instead of calling netdev notifiers,
  thanks to Saeed Mahameed
- squash two patches into a single one

CC: Paolo Abeni <pabeni@redhat.com>
CC: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Davide Caratti 2019-07-26 20:18:12 +02:00 коммит произвёл David S. Miller
Родитель 85d2c5cde1
Коммит 91c6bfb831
1 изменённых файлов: 17 добавлений и 26 удалений
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43
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
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@ -2645,14 +2645,6 @@ out:
en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
return;
}
/* set offloads */
priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_RXCSUM |
NETIF_F_TSO | NETIF_F_TSO6 |
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)
@ -2660,14 +2652,6 @@ static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
int ret;
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
vxlan_del_task);
/* unset offloads */
priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_RXCSUM |
NETIF_F_TSO | NETIF_F_TSO6 |
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);
if (ret)
@ -3415,6 +3399,23 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
if (mdev->LSO_support)
dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
if (mdev->dev->caps.tunnel_offload_mode ==
MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
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;
dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_RXCSUM |
NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL;
}
dev->vlan_features = dev->hw_features;
dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
@ -3483,16 +3484,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
priv->rss_hash_fn = ETH_RSS_HASH_TOP;
}
if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
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;
}
/* MTU range: 68 - hw-specific max */
dev->min_mtu = ETH_MIN_MTU;
dev->max_mtu = priv->max_mtu;