#define __NETIFD_UTILS_H
#include <libubox/list.h>
+#include <libubox/avl.h>
#ifdef DEBUG
#define DPRINTF(format, ...) fprintf(stderr, "%s(%d): " format, __func__, __LINE__, ## __VA_ARGS__)
#define __init __attribute__((constructor))
+struct vlist_tree;
+struct vlist_node;
+
+typedef void (*vlist_update_cb)(struct vlist_tree *tree,
+ struct vlist_node *node_new,
+ struct vlist_node *node_old);
+
+struct vlist_tree {
+ struct avl_tree avl;
+
+ vlist_update_cb update;
+ int key_offset;
+ bool keep_old;
+ bool no_delete;
+
+ int version;
+};
+
+struct vlist_node {
+ struct avl_node avl;
+ int version;
+};
+
+void __vlist_init(struct vlist_tree *tree, avl_tree_comp cmp, vlist_update_cb update, int offset);
+
+#define vlist_init(tree, cmp, update, type, node, key) \
+ __vlist_init(tree, cmp, update, offsetof(type, key) - offsetof(type, node))
+
+void vlist_add(struct vlist_tree *tree, struct vlist_node *node);
+void vlist_delete(struct vlist_tree *tree, struct vlist_node *node);
+void vlist_flush(struct vlist_tree *tree);
+void vlist_flush_all(struct vlist_tree *tree);
+
+#define vlist_for_each_element(tree, element, node_member) \
+ avl_for_each_element(&(tree)->avl, element, node_member.avl)
+
#ifdef __linux__
static inline int fls(int x)
{