ubusd_id.h

   1 /*
   2  * Copyright (C) 2011 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef __UBUSD_ID_H
  15 #define __UBUSD_ID_H
  16
  17 #include <libubox/avl.h>
  18 #include <stdint.h>
  19
  20 struct ubus_id {
  21         struct avl_node avl;
  22         uint32_t id;
  23 };
  24
  25 void ubus_init_id_tree(struct avl_tree *tree);
  26 void ubus_init_string_tree(struct avl_tree *tree, bool dup);
  27 bool ubus_alloc_id(struct avl_tree *tree, struct ubus_id *id, uint32_t val);
  28
  29 static inline void ubus_free_id(struct avl_tree *tree, struct ubus_id *id)
  30 {
  31         avl_delete(tree, &id->avl);
  32 }
  33
  34 static inline struct ubus_id *ubus_find_id(struct avl_tree *tree, uint32_t id)
  35 {
  36         struct avl_node *avl;
  37
  38         avl = avl_find(tree, &id);
  39         if (!avl)
  40                 return NULL;
  41
  42         return container_of(avl, struct ubus_id, avl);
  43 }
  44
  45 #endif