src/patricia.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2011 Daniel Borkmann, rewritten
   5  * Copyright 1991-2007 Kawahara Lab., Kyoto University
   6  * Copyright 2000-2005 Shikano Lab., Nara Institute of Science and Technology
   7  * Copyright 2005-2007 Julius project team, Nagoya Institute of Technology
   8  * All rights reserved
   9  * Subject to the GPL, version 2.
  10  */
  11
  12 #ifndef PATRICIA_H
  13 #define PATRICIA_H
  14
  15 #include <netinet/in.h>
  16
  17 #include "built_in.h"
  18
  19 struct patricia_node {
  20         void *key;
  21         size_t klen;
  22         struct sockaddr_storage *addr;
  23         size_t alen;
  24         union {
  25                 int data;
  26                 int thres_bit;
  27         } value;
  28         struct patricia_node *l, *r;
  29 } __cacheline_aligned;
  30
  31 extern int ptree_search_data_nearest(void *str, size_t sstr,
  32                                      struct sockaddr_storage *addr, size_t *alen,
  33                                      struct patricia_node *root);
  34 extern int ptree_search_data_exact(void *str, size_t sstr,
  35                                    struct sockaddr_storage *addr, size_t *alen,
  36                                    struct patricia_node *root);
  37 extern int ptree_add_entry(void *str, size_t sstr, int data,
  38                            struct sockaddr_storage *addr, size_t alen,
  39                            struct patricia_node **root);
  40 extern void ptree_del_entry(void *str, size_t sstr,
  41                             struct patricia_node **root);
  42 extern void ptree_get_key(int data, struct patricia_node *node,
  43                           struct patricia_node **wanted);
  44 extern void ptree_get_key_addr(struct sockaddr_storage *addr, size_t alen,
  45                                struct patricia_node *node,
  46                                struct patricia_node **wanted);
  47 extern void ptree_display(struct patricia_node *node, int level);
  48 extern void ptree_free(struct patricia_node *root);
  49
  50 #define ptree_maybe_add_entry ptree_add_entry
  51
  52 #endif /* PATRICIA_H */