1 /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
3 * Marek Lindner, Simon Wunderlich
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
21 #define _NET_BATMAN_ADV_ORIGINATOR_H_
25 int batadv_compare_orig(const struct hlist_node *node, const void *data2);
26 int batadv_originator_init(struct batadv_priv *bat_priv);
27 void batadv_originator_free(struct batadv_priv *bat_priv);
28 void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
29 void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node);
30 void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node);
31 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
33 struct batadv_neigh_node *
34 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
35 const uint8_t *neigh_addr,
36 struct batadv_orig_node *orig_node);
37 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
38 struct batadv_neigh_node *
39 batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
40 int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
41 int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
43 int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
45 struct batadv_orig_node_vlan *
46 batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
48 struct batadv_orig_node_vlan *
49 batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
51 void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan);
54 /* hashfunction to choose an entry in a hash table of given size
55 * hash algorithm from http://en.wikipedia.org/wiki/Hash_table
57 static inline uint32_t batadv_choose_orig(const void *data, uint32_t size)
59 const unsigned char *key = data;
63 for (i = 0; i < 6; i++) {
76 static inline struct batadv_orig_node *
77 batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data)
79 struct batadv_hashtable *hash = bat_priv->orig_hash;
80 struct hlist_head *head;
81 struct batadv_orig_node *orig_node, *orig_node_tmp = NULL;
87 index = batadv_choose_orig(data, hash->size);
88 head = &hash->table[index];
91 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
92 if (!batadv_compare_eth(orig_node, data))
95 if (!atomic_inc_not_zero(&orig_node->refcount))
98 orig_node_tmp = orig_node;
103 return orig_node_tmp;
106 #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */