1 /* Copyright (C) 2006-2014 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, see <http://www.gnu.org/licenses/>.
22 static void batadv_hash_init(struct batadv_hashtable *hash)
26 for (i = 0; i < hash->size; i++) {
27 INIT_HLIST_HEAD(&hash->table[i]);
28 spin_lock_init(&hash->list_locks[i]);
32 /* free only the hashtable and the hash itself. */
33 void batadv_hash_destroy(struct batadv_hashtable *hash)
35 kfree(hash->list_locks);
40 /* allocates and clears the hash */
41 struct batadv_hashtable *batadv_hash_new(uint32_t size)
43 struct batadv_hashtable *hash;
45 hash = kmalloc(sizeof(*hash), GFP_ATOMIC);
49 hash->table = kmalloc(sizeof(*hash->table) * size, GFP_ATOMIC);
53 hash->list_locks = kmalloc(sizeof(*hash->list_locks) * size,
55 if (!hash->list_locks)
59 batadv_hash_init(hash);
69 void batadv_hash_set_lock_class(struct batadv_hashtable *hash,
70 struct lock_class_key *key)
74 for (i = 0; i < hash->size; i++)
75 lockdep_set_class(&hash->list_locks[i], key);