+nfp_flower_calc_udp_tun_layer(struct flow_dissector_key_ports *enc_ports,
+ struct flow_dissector_key_enc_opts *enc_op,
+ u32 *key_layer_two, u8 *key_layer, int *key_size,
+ struct nfp_flower_priv *priv,
+ enum nfp_flower_tun_type *tun_type,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ switch (enc_ports->dst) {
+ case htons(IANA_VXLAN_UDP_PORT):
+ *tun_type = NFP_FL_TUNNEL_VXLAN;
+ *key_layer |= NFP_FLOWER_LAYER_VXLAN;
+ *key_size += sizeof(struct nfp_flower_ipv4_udp_tun);
+
+ if (enc_op) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: encap options not supported on vxlan tunnels");
+ return -EOPNOTSUPP;
+ }
+ break;
+ case htons(GENEVE_UDP_PORT):
+ if (!(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve offload");
+ return -EOPNOTSUPP;
+ }
+ *tun_type = NFP_FL_TUNNEL_GENEVE;
+ *key_layer |= NFP_FLOWER_LAYER_EXT_META;
+ *key_size += sizeof(struct nfp_flower_ext_meta);
+ *key_layer_two |= NFP_FLOWER_LAYER2_GENEVE;
+ *key_size += sizeof(struct nfp_flower_ipv4_udp_tun);
+
+ if (!enc_op)
+ break;
+ if (!(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE_OPT)) {
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve option offload");
+ return -EOPNOTSUPP;
+ }
+ err = nfp_flower_calc_opt_layer(enc_op, key_layer_two,
+ key_size, extack);
+ if (err)
+ return err;
+ break;
+ default:
+ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: tunnel type unknown");
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int