team: Advertise tunneling offload features

When the underlying device supports offloads encapulated traffic,
we need to reflect that through the hw_enc_features field of the
team net-device.

This will cause the xmit path in the core networking stack to provide
team with encapsulated GSO frames to offload into the HW etc.

Using this over Mellanox ConnectX3-pro (mlx4 driver) card that supports
VXLAN offloads we got 36.0 Gbits/sec using eight iperf streams.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 915f60f..2528331 100644 (file)
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -985,10 +985,14 @@ static void team_port_disable(struct team *team,
                            NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
                            NETIF_F_HIGHDMA | NETIF_F_LRO)
 
+#define TEAM_ENC_FEATURES      (NETIF_F_HW_CSUM | NETIF_F_SG | \
+                                NETIF_F_RXCSUM | NETIF_F_ALL_TSO)
+
 static void __team_compute_features(struct team *team)
 {
        struct team_port *port;
        u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
+       netdev_features_t enc_features  = TEAM_ENC_FEATURES;
        unsigned short max_hard_header_len = ETH_HLEN;
        unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
                                        IFF_XMIT_DST_RELEASE_PERM;
@@ -997,6 +1001,11 @@ static void __team_compute_features(struct team *team)
                vlan_features = netdev_increment_features(vlan_features,
                                        port->dev->vlan_features,
                                        TEAM_VLAN_FEATURES);
+               enc_features =
+                       netdev_increment_features(enc_features,
+                                                 port->dev->hw_enc_features,
+                                                 TEAM_ENC_FEATURES);
+
 
                dst_release_flag &= port->dev->priv_flags;
                if (port->dev->hard_header_len > max_hard_header_len)
@@ -1004,6 +1013,7 @@ static void __team_compute_features(struct team *team)
        }
 
        team->dev->vlan_features = vlan_features;
+       team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL;
        team->dev->hard_header_len = max_hard_header_len;
 
        team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
@@ -2091,6 +2101,7 @@ static void team_setup(struct net_device *dev)
                           NETIF_F_HW_VLAN_CTAG_RX |
                           NETIF_F_HW_VLAN_CTAG_FILTER;
 
+       dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
        dev->features |= dev->hw_features;
 }