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net/mlx5e: Warn when rejecting offload attempts of IP tunnels

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We silently reject offloading of IPv6 tunnels, non vxlan tunnels,
vxlan tunnels where the dst port to match is not provided, etc.

Be a bit more verbose and print a warning so the user better
realizes what went wrong here and can fix it.

Fixes: a54e20b4fc ('net/mlx5e: Add basic TC tunnel set action for SRIOV offloads')
Fixes: bbd00f7e23 ('net/mlx5e: Add TC tunnel release action for SRIOV offloads')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz 2017-01-10 22:33:31 +02:00 committed by David S. Miller
parent cd37766380
commit 2fcd82e9be
1 changed files with 24 additions and 6 deletions
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30
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
View file

@ -237,13 +237,16 @@ static int parse_tunnel_attr(struct mlx5e_priv *priv,
/* Full udp dst port must be given */
if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
return -EOPNOTSUPP;
goto vxlan_match_offload_err;
if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
parse_vxlan_attr(spec, f);
else
else {
netdev_warn(priv->netdev,
"%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
return -EOPNOTSUPP;
}
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
udp_dport, ntohs(mask->dst));
@ -255,7 +258,10 @@ static int parse_tunnel_attr(struct mlx5e_priv *priv,
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
udp_sport, ntohs(key->src));
} else { /* udp dst port must be given */
return -EOPNOTSUPP;
vxlan_match_offload_err:
netdev_warn(priv->netdev,
"IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
return -EOPNOTSUPP;
}
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
@ -346,6 +352,9 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
if (parse_tunnel_attr(priv, spec, f))
return -EOPNOTSUPP;
break;
case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
netdev_warn(priv->netdev,
"IPv6 tunnel decap offload isn't supported\n");
default:
return -EOPNOTSUPP;
}
@ -792,13 +801,17 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
int tunnel_type;
int err;
/* udp dst port must be given */
/* udp dst port must be set */
if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
return -EOPNOTSUPP;
goto vxlan_encap_offload_err;
/* setting udp src port isn't supported */
if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src)))
if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
vxlan_encap_offload_err:
netdev_warn(priv->netdev,
"must set udp dst port and not set udp src port\n");
return -EOPNOTSUPP;
}
if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
@ -806,6 +819,8 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
info.tun_id = tunnel_id_to_key32(key->tun_id);
tunnel_type = MLX5_HEADER_TYPE_VXLAN;
} else {
netdev_warn(priv->netdev,
"%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
return -EOPNOTSUPP;
}
@ -813,6 +828,9 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
case AF_INET:
info.daddr = key->u.ipv4.dst;
break;
case AF_INET6:
netdev_warn(priv->netdev,
"IPv6 tunnel encap offload isn't supported\n");
default:
return -EOPNOTSUPP;
}