1 /* Copyright (C) 2006-2012 B.A.T.M.A.N. contributors:
3 * Simon Wunderlich, Marek Lindner
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
24 static void batadv_hash_init(struct batadv_hashtable *hash)
28 for (i = 0; i < hash->size; i++) {
29 INIT_HLIST_HEAD(&hash->table[i]);
30 spin_lock_init(&hash->list_locks[i]);
34 /* free only the hashtable and the hash itself. */
35 void batadv_hash_destroy(struct batadv_hashtable *hash)
37 kfree(hash->list_locks);
42 /* allocates and clears the hash */
43 struct batadv_hashtable *batadv_hash_new(uint32_t size)
45 struct batadv_hashtable *hash;
47 hash = kmalloc(sizeof(*hash), GFP_ATOMIC);
51 hash->table = kmalloc(sizeof(*hash->table) * size, GFP_ATOMIC);
55 hash->list_locks = kmalloc(sizeof(*hash->list_locks) * size,
57 if (!hash->list_locks)
61 batadv_hash_init(hash);
71 void batadv_hash_set_lock_class(struct batadv_hashtable *hash,
72 struct lock_class_key *key)
76 for (i = 0; i < hash->size; i++)
77 lockdep_set_class(&hash->list_locks[i], key);