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Commit 3c9346b2 authored by Alexander Duyck's avatar Alexander Duyck Committed by David S. Miller
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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: default avatarAlexander Duyck <aduyck@mirantis.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b1dc497b

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

+13 −4
Original line number Diff line number Diff line
@@ -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;