+static void
+bfd_create_frame_to_next_node (vlib_main_t * vm, u32 bi, u32 next_node)
+{
+ vlib_frame_t *f = vlib_get_frame_to_node (vm, next_node);
+ u32 *to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (vm, next_node, f);
+}
+
+int
+bfd_udp_calc_next_node (const struct bfd_session_s *bs, u32 * next_node)
+{
+ const bfd_udp_session_t *bus = &bs->udp;
+ ip_adjacency_t *adj = adj_get (bus->adj_index);
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_ARP:
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ *next_node = bfd_udp_main.ip4_arp_idx;
+ return 1;
+ case BFD_TRANSPORT_UDP6:
+ *next_node = bfd_udp_main.ip6_ndp_idx;
+ return 1;
+ }
+ break;
+ case IP_LOOKUP_NEXT_REWRITE:
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ *next_node = bfd_udp_main.ip4_rewrite_idx;
+ return 1;
+ case BFD_TRANSPORT_UDP6:
+ *next_node = bfd_udp_main.ip6_rewrite_idx;
+ return 1;
+ }
+ break;
+ default:
+ /* drop */
+ break;
+ }
+ return 0;
+}
+
+int
+bfd_transport_udp4 (vlib_main_t * vm, u32 bi, const struct bfd_session_s *bs)
+{
+ u32 next_node;
+ int rv = bfd_udp_calc_next_node (bs, &next_node);
+ if (rv)
+ {
+ bfd_create_frame_to_next_node (vm, bi, next_node);
+ }
+ return rv;
+}
+
+int
+bfd_transport_udp6 (vlib_main_t * vm, u32 bi, const struct bfd_session_s *bs)
+{
+ u32 next_node;
+ int rv = bfd_udp_calc_next_node (bs, &next_node);
+ if (rv)
+ {
+ bfd_create_frame_to_next_node (vm, bi, next_node);
+ }
+ return 1;
+}
+