+ hash_unset_mem_free(&adj_nbr_tables[nh_proto][sw_if_index], &kv);
+
+ if (0 == hash_elts(adj_nbr_tables[nh_proto][sw_if_index]))
+ {
+ hash_free(adj_nbr_tables[nh_proto][sw_if_index]);
+ }
+}
+
+typedef struct adj_nbr_get_n_adjs_walk_ctx_t_
+{
+ vnet_link_t linkt;
+ u32 count;
+} adj_nbr_get_n_adjs_walk_ctx_t;
+
+static adj_walk_rc_t
+adj_nbr_get_n_adjs_walk (adj_index_t ai,
+ void *data)
+{
+ adj_nbr_get_n_adjs_walk_ctx_t *ctx = data;
+ const ip_adjacency_t *adj;
+
+ adj = adj_get(ai);
+
+ if (ctx->linkt == adj->ia_link)
+ ctx->count++;
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
+u32
+adj_nbr_get_n_adjs (vnet_link_t link_type, u32 sw_if_index)
+{
+ adj_nbr_get_n_adjs_walk_ctx_t ctx = {
+ .linkt = link_type,
+ };
+ fib_protocol_t fproto;
+
+ FOR_EACH_FIB_IP_PROTOCOL(fproto)
+ {
+ adj_nbr_walk (sw_if_index,
+ fproto,
+ adj_nbr_get_n_adjs_walk,
+ &ctx);
+ }
+
+ return (ctx.count);