-void flow_set_mpls_label(struct flow *flow, ovs_be32 label);
-void flow_set_mpls_ttl(struct flow *flow, uint8_t ttl);
-void flow_set_mpls_tc(struct flow *flow, uint8_t tc);
-void flow_set_mpls_bos(struct flow *flow, uint8_t stack);
+int flow_count_mpls_labels(const struct flow *, struct flow_wildcards *);
+int flow_count_common_mpls_labels(const struct flow *a, int an,
+ const struct flow *b, int bn,
+ struct flow_wildcards *wc);
+void flow_push_mpls(struct flow *, int n, ovs_be16 mpls_eth_type,
+ struct flow_wildcards *);
+bool flow_pop_mpls(struct flow *, int n, ovs_be16 eth_type,
+ struct flow_wildcards *);
+void flow_set_mpls_label(struct flow *, int idx, ovs_be32 label);
+void flow_set_mpls_ttl(struct flow *, int idx, uint8_t ttl);
+void flow_set_mpls_tc(struct flow *, int idx, uint8_t tc);
+void flow_set_mpls_bos(struct flow *, int idx, uint8_t stack);
+void flow_set_mpls_lse(struct flow *, int idx, ovs_be32 lse);