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9cfc7bd608
batman-adv doesn't follow the style for multiline comments that David S. Miller prefers. All comments should be reformatted to follow this consistent style to make the code slightly more readable. Signed-off-by: Sven Eckelmann <sven@narfation.org>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/* Copyright (C) 2006-2012 B.A.T.M.A.N. contributors:
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*
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* Simon Wunderlich, Marek Lindner
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#include "main.h"
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#include "hash.h"
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/* clears the hash */
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static void hash_init(struct hashtable_t *hash)
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{
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uint32_t i;
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for (i = 0 ; i < hash->size; i++) {
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INIT_HLIST_HEAD(&hash->table[i]);
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spin_lock_init(&hash->list_locks[i]);
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}
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}
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/* free only the hashtable and the hash itself. */
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void batadv_hash_destroy(struct hashtable_t *hash)
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{
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kfree(hash->list_locks);
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kfree(hash->table);
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kfree(hash);
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}
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/* allocates and clears the hash */
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struct hashtable_t *batadv_hash_new(uint32_t size)
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{
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struct hashtable_t *hash;
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hash = kmalloc(sizeof(*hash), GFP_ATOMIC);
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if (!hash)
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return NULL;
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hash->table = kmalloc(sizeof(*hash->table) * size, GFP_ATOMIC);
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if (!hash->table)
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goto free_hash;
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hash->list_locks = kmalloc(sizeof(*hash->list_locks) * size,
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GFP_ATOMIC);
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if (!hash->list_locks)
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goto free_table;
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hash->size = size;
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hash_init(hash);
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return hash;
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free_table:
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kfree(hash->table);
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free_hash:
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kfree(hash);
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return NULL;
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}
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void batadv_hash_set_lock_class(struct hashtable_t *hash,
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struct lock_class_key *key)
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{
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uint32_t i;
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for (i = 0; i < hash->size; i++)
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lockdep_set_class(&hash->list_locks[i], key);
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}
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