netdev - [net-next v2 8/8] net/mlx5e: Support TSO and TX checksum offloads for IP-in-IP tunnels

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Date:   Wed, 28 Aug 2019 18:57:55 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Marina Varshaver <marinav@...lanox.com>,
        Avihu Hagag <avihuh@...lanox.com>,
        Aya Levin <ayal@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next v2 8/8] net/mlx5e: Support TSO and TX checksum offloads for
 IP-in-IP tunnels

From: Marina Varshaver <marinav@...lanox.com>

Add TX offloads support for IP-in-IP tunneled packets by reporting
the needed netdev features.

Signed-off-by: Marina Varshaver <marinav@...lanox.com>
Signed-off-by: Avihu Hagag <avihuh@...lanox.com>
Reviewed-by: Aya Levin <ayal@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 327c90d936e9..9ff28e2d72cd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4243,6 +4243,8 @@ static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv,
 
 	switch (proto) {
 	case IPPROTO_GRE:
+	case IPPROTO_IPIP:
+	case IPPROTO_IPV6:
 		return features;
 	case IPPROTO_UDP:
 		udph = udp_hdr(skb);
@@ -4903,6 +4905,15 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
 						NETIF_F_GSO_GRE_CSUM;
 	}
 
+	if (mlx5e_tunnel_proto_supported(mdev, IPPROTO_IPIP)) {
+		netdev->hw_features |= NETIF_F_GSO_IPXIP4 |
+				       NETIF_F_GSO_IPXIP6;
+		netdev->hw_enc_features |= NETIF_F_GSO_IPXIP4 |
+					   NETIF_F_GSO_IPXIP6;
+		netdev->gso_partial_features |= NETIF_F_GSO_IPXIP4 |
+						NETIF_F_GSO_IPXIP6;
+	}
+
 	netdev->hw_features	                 |= NETIF_F_GSO_PARTIAL;
 	netdev->gso_partial_features             |= NETIF_F_GSO_UDP_L4;
 	netdev->hw_features                      |= NETIF_F_GSO_UDP_L4;
-- 
2.21.0