rbtree: add successor and predecessor functions

[vpp.git] / src / vppinfra / rbtree.h

diff --git a/src/vppinfra/rbtree.h b/src/vppinfra/rbtree.h
index ace07ac..73180d1 100644 (file)
--- a/src/vppinfra/rbtree.h
+++ b/src/vppinfra/rbtree.h
@@ -54,6 +54,8 @@ u32 rb_tree_n_nodes (rb_tree_t * rt);
 rb_node_t *rb_tree_min_subtree (rb_tree_t * rt, rb_node_t * x);
 rb_node_t *rb_tree_max_subtree (rb_tree_t * rt, rb_node_t * x);
 rb_node_t *rb_tree_search_subtree (rb_tree_t * rt, rb_node_t * x, u32 key);
+rb_node_t *rb_tree_successor (rb_tree_t * rt, rb_node_t * x);
+rb_node_t *rb_tree_predecessor (rb_tree_t * rt, rb_node_t * x);
 
 static inline rb_node_index_t
 rb_node_index (rb_tree_t * rt, rb_node_t * n)