mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

net/mlx5e: Support TSO and TX checksum offloads for GRE tunnels 

Add TX offloads support for GRE tunneled packets by reporting the needed
netdev features.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Gal Pressman 2017-08-13 13:34:42 +03:00 committed by Saeed Mahameed
parent 888fcd9cd2
commit 2729984149
2 changed files with 34 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -3499,13 +3499,13 @@ static void mlx5e_del_vxlan_port(struct net_device *netdev,
mlx5e_vxlan_queue_work(priv, ti->sa_family, be16_to_cpu(ti->port), 0);
}
static netdev_features_t mlx5e_vxlan_features_check(struct mlx5e_priv *priv,
struct sk_buff *skb,
netdev_features_t features)
static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv,
struct sk_buff *skb,
netdev_features_t features)
{
struct udphdr *udph;
u16 proto;
u16 port = 0;
u8 proto;
u16 port;
switch (vlan_get_protocol(skb)) {
case htons(ETH_P_IP):
@ -3518,14 +3518,17 @@ static netdev_features_t mlx5e_vxlan_features_check(struct mlx5e_priv *priv,
goto out;
}
if (proto == IPPROTO_UDP) {
switch (proto) {
case IPPROTO_GRE:
return features;
case IPPROTO_UDP:
udph = udp_hdr(skb);
port = be16_to_cpu(udph->dest);
}
/* Verify if UDP port is being offloaded by HW */
if (port && mlx5e_vxlan_lookup_port(priv, port))
return features;
/* Verify if UDP port is being offloaded by HW */
if (mlx5e_vxlan_lookup_port(priv, port))
return features;
}
out:
/* Disable CSUM and GSO if the udp dport is not offloaded by HW */
@ -3549,7 +3552,7 @@ static netdev_features_t mlx5e_features_check(struct sk_buff *skb,
/* Validate if the tunneled packet is being offloaded by HW */
if (skb->encapsulation &&
(features & NETIF_F_CSUM_MASK || features & NETIF_F_GSO_MASK))
return mlx5e_vxlan_features_check(priv, skb, features);
return mlx5e_tunnel_features_check(priv, skb, features);
return features;
}
@ -4014,20 +4017,32 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
if (mlx5e_vxlan_allowed(mdev)) {
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL;
if (mlx5e_vxlan_allowed(mdev) || MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) {
netdev->hw_features |= NETIF_F_GSO_PARTIAL;
netdev->hw_enc_features |= NETIF_F_IP_CSUM;
netdev->hw_enc_features |= NETIF_F_IPV6_CSUM;
netdev->hw_enc_features |= NETIF_F_TSO;
netdev->hw_enc_features |= NETIF_F_TSO6;
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL;
netdev->hw_enc_features |= NETIF_F_GSO_PARTIAL;
}
if (mlx5e_vxlan_allowed(mdev)) {
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM;
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;
}
if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) {
netdev->hw_features |= NETIF_F_GSO_GRE |
NETIF_F_GSO_GRE_CSUM;
netdev->hw_enc_features |= NETIF_F_GSO_GRE |
NETIF_F_GSO_GRE_CSUM;
netdev->gso_partial_features |= NETIF_F_GSO_GRE |
NETIF_F_GSO_GRE_CSUM;
}
mlx5_query_port_fcs(mdev, &fcs_supported, &fcs_enabled);
if (fcs_supported)

2
include/linux/mlx5/mlx5_ifc.h
View File

@ -602,7 +602,7 @@ struct mlx5_ifc_per_protocol_networking_offload_caps_bits {
u8 reserved_at_1a[0x1];
u8 tunnel_lso_const_out_ip_id[0x1];
u8 reserved_at_1c[0x2];
u8 tunnel_statless_gre[0x1];
u8 tunnel_stateless_gre[0x1];
u8 tunnel_stateless_vxlan[0x1];
u8 swp[0x1];