net/mlx5e: Warn when rejecting offload attempts of IP tunnels
[sfrench/cifs-2.6.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_tc.c
index b60feceab63b763cd4b2bc1fc2aacb18cf47fc04..d2fc055f054affc261903620afbf4237b794049c 100644 (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;
        }