do not clear device state for devices created by proto-up with address-external set

[project/netifd.git] / utils.c

diff --git a/utils.c b/utils.c
index cf0718a..5219546 100644 (file)
--- a/utils.c
+++ b/utils.c
@@ -1,8 +1,72 @@
 #include <string.h>
 #include "utils.h"
 
-int avl_strcmp(const void *k1, const void *k2, void *ptr)
+int
+avl_strcmp(const void *k1, const void *k2, void *ptr)
 {
        return strcmp(k1, k2);
 }
 
+void
+__vlist_init(struct vlist_tree *tree, avl_tree_comp cmp,
+            vlist_update_cb update, int offset)
+{
+       tree->key_offset = offset;
+       tree->update = update;
+       tree->version = 1;
+
+       avl_init(&tree->avl, cmp, 0, tree);
+}
+
+void
+vlist_delete(struct vlist_tree *tree, struct vlist_node *node)
+{
+       if (!tree->no_delete)
+               avl_delete(&tree->avl, &node->avl);
+       tree->update(tree, NULL, node);
+}
+
+void
+vlist_add(struct vlist_tree *tree, struct vlist_node *node)
+{
+       struct vlist_node *old_node = NULL;
+       struct avl_node *anode;
+       void *key = (char *) node + tree->key_offset;
+
+       node->avl.key = key;
+       node->version = tree->version;
+
+       anode = avl_find(&tree->avl, key);
+       if (anode) {
+               old_node = container_of(anode, struct vlist_node, avl);
+               if (tree->keep_old || !tree->no_delete)
+                       goto update_only;
+
+               avl_delete(&tree->avl, anode);
+       }
+
+       avl_insert(&tree->avl, &node->avl);
+
+update_only:
+       tree->update(tree, node, old_node);
+}
+
+void
+vlist_flush(struct vlist_tree *tree)
+{
+       struct vlist_node *node, *tmp;
+
+       avl_for_each_element_safe(&tree->avl, node, avl, tmp) {
+               if (node->version == tree->version)
+                       continue;
+
+               vlist_delete(tree, node);
+       }
+}
+
+void
+vlist_flush_all(struct vlist_tree *tree)
+{
+       tree->version++;
+       vlist_flush(tree);
+}