/* clears the hash */
static void batadv_hash_init(struct batadv_hashtable *hash)
{
u32 i;
for (i = 0; i < hash->size; i++) {
INIT_HLIST_HEAD(&hash->table[i]);
spin_lock_init(&hash->list_locks[i]);
}
}
/* free only the hashtable and the hash itself. */
void batadv_hash_destroy(struct batadv_hashtable *hash)
{
kfree(hash->list_locks);
kfree(hash->table);
kfree(hash);
}
/* allocates and clears the hash */
struct batadv_hashtable *batadv_hash_new(u32 size)
{
struct batadv_hashtable *hash;
hash = kmalloc(sizeof(*hash), GFP_ATOMIC);
if (!hash)
return NULL;
hash->table = kmalloc_array(size, sizeof(*hash->table), GFP_ATOMIC);
if (!hash->table)
goto free_hash;
hash->list_locks = kmalloc_array(size, sizeof(*hash->list_locks),
GFP_ATOMIC);
if (!hash->list_locks)
goto free_table;
hash->size = size;
batadv_hash_init(hash);
return hash;
free_table:
kfree(hash->table);
free_hash:
kfree(hash);
return NULL;
}
void batadv_hash_set_lock_class(struct batadv_hashtable *hash,
struct lock_class_key *key)
{
u32 i;
for (i = 0; i < hash->size; i++)
lockdep_set_class(&hash->list_locks[i], key);
}
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