linux-kernel - [PATCH 5.4 18/90] net/mlx5e: allow TSO on VXLAN over VLAN topologies

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Message-Id: <20210621154904.754908745@linuxfoundation.org>
Date:   Mon, 21 Jun 2021 18:14:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Davide Caratti <dcaratti@...hat.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 18/90] net/mlx5e: allow TSO on VXLAN over VLAN topologies

From: Davide Caratti <dcaratti@...hat.com>

[ Upstream commit a1718505d7f67ee0ab051322f1cbc7ac42b5da82 ]

since mlx5 hardware can segment correctly TSO packets on VXLAN over VLAN
topologies, CPU usage can improve significantly if we enable tunnel
offloads in dev->vlan_features, like it was done in the past with other
NIC drivers (e.g. mlx4, be2net and ixgbe).

Signed-off-by: Davide Caratti <dcaratti@...hat.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 36b9a364ef26..374ce17e1499 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5012,6 +5012,8 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
 		netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL |
 					   NETIF_F_GSO_UDP_TUNNEL_CSUM;
 		netdev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		netdev->vlan_features |= NETIF_F_GSO_UDP_TUNNEL |
+					 NETIF_F_GSO_UDP_TUNNEL_CSUM;
 	}
 
 	if (mlx5e_tunnel_proto_supported(mdev, IPPROTO_GRE)) {
-- 
2.30.2