+void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
+
+void eth_push_vlan(struct ofpbuf *, ovs_be16 tci);
+void eth_pop_vlan(struct ofpbuf *);
+
+uint16_t eth_mpls_depth(const struct ofpbuf *packet);
+
+void set_ethertype(struct ofpbuf *packet, ovs_be16 eth_type);
+
+const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
+void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
+ const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
+void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
+ const uint8_t mask[ETH_ADDR_LEN],
+ uint8_t dst[ETH_ADDR_LEN]);
+
+void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
+void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
+void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
+
+void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
+void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
+void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
+void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
+ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
+ ovs_be32 label);