diff options
| -rw-r--r-- | net/core/dev.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index b517d36e653..cc105ff67db 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4268,32 +4268,39 @@ int netdev_compute_features(unsigned long all, unsigned long one) } EXPORT_SYMBOL(netdev_compute_features); +static struct hlist_head *netdev_create_hash(void) +{ + int i; + struct hlist_head *hash; + + hash = kmalloc(sizeof(*hash) * NETDEV_HASHENTRIES, GFP_KERNEL); + if (hash != NULL) + for (i = 0; i < NETDEV_HASHENTRIES; i++) + INIT_HLIST_HEAD(&hash[i]); + + return hash; +} + /* Initialize per network namespace state */ static int netdev_init(struct net *net) { - int i; INIT_LIST_HEAD(&net->dev_base_head); rwlock_init(&dev_base_lock); - net->dev_name_head = kmalloc( - sizeof(*net->dev_name_head)*NETDEV_HASHENTRIES, GFP_KERNEL); - if (!net->dev_name_head) - return -ENOMEM; - - net->dev_index_head = kmalloc( - sizeof(*net->dev_index_head)*NETDEV_HASHENTRIES, GFP_KERNEL); - if (!net->dev_index_head) { - kfree(net->dev_name_head); - return -ENOMEM; - } + net->dev_name_head = netdev_create_hash(); + if (net->dev_name_head == NULL) + goto err_name; - for (i = 0; i < NETDEV_HASHENTRIES; i++) - INIT_HLIST_HEAD(&net->dev_name_head[i]); - - for (i = 0; i < NETDEV_HASHENTRIES; i++) - INIT_HLIST_HEAD(&net->dev_index_head[i]); + net->dev_index_head = netdev_create_hash(); + if (net->dev_index_head == NULL) + goto err_idx; return 0; + +err_idx: + kfree(net->dev_name_head); +err_name: + return -ENOMEM; } static void netdev_exit(struct net *net) |