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nfp: support VxLAN inner TSO with GSO_PARTIAL offload

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VxLAN belongs to UDP-based encapsulation protocol. Inner TSO for VxLAN
packet with udpcsum requires offloading of outer header csum.

The device doesn't support outer header csum offload. However, inner TSO
for VxLAN with udpcsum can still work with GSO_PARTIAL offload, which
means outer udp csum computed by stack and inner tcp segmentation finished
by hardware. Thus, the patch enable features "NETIF_F_GSO_UDP_TUNNEL_CSUM"
and "NETIF_F_GSO_PARTIAL" and set gso_partial_features.

Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20220430231150.175270-1-simon.horman@corigine.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Fei Qin 2022-05-01 08:11:50 +09:00 committed by Paolo Abeni
parent a313f858ed
commit ae664d9d85
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
View File

@ -2259,8 +2259,12 @@ static void nfp_net_netdev_init(struct nfp_net *nn)
if (nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)
netdev->hw_features |= NETIF_F_RXHASH;
if (nn->cap & NFP_NET_CFG_CTRL_VXLAN) {
if (nn->cap & NFP_NET_CFG_CTRL_LSO)
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
if (nn->cap & NFP_NET_CFG_CTRL_LSO) {
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL;
netdev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
netdev->udp_tunnel_nic_info = &nfp_udp_tunnels;
nn->dp.ctrl |= NFP_NET_CFG_CTRL_VXLAN;
}