LIST_HEAD(net_namespace_list);
struct net init_net;
-EXPORT_SYMBOL_GPL(init_net);
+EXPORT_SYMBOL(init_net);
/*
* setup_net runs the initializers for the network namespace object.
#ifdef CONFIG_NET_NS
static struct kmem_cache *net_cachep;
+static struct workqueue_struct *netns_wq;
static struct net *net_alloc(void)
{
return kmem_cache_zalloc(net_cachep, GFP_KERNEL);
}
+static void net_free(struct net *net)
+{
+ if (!net)
+ return;
+
+ if (unlikely(atomic_read(&net->use_count) != 0)) {
+ printk(KERN_EMERG "network namespace not free! Usage: %d\n",
+ atomic_read(&net->use_count));
+ return;
+ }
+
+ kmem_cache_free(net_cachep, net);
+}
+
struct net *copy_net_ns(unsigned long flags, struct net *old_net)
{
struct net *new_net = NULL;
return new_net;
}
-static void net_free(struct net *net)
-{
- if (!net)
- return;
-
- if (unlikely(atomic_read(&net->use_count) != 0)) {
- printk(KERN_EMERG "network namespace not free! Usage: %d\n",
- atomic_read(&net->use_count));
- return;
- }
-
- kmem_cache_free(net_cachep, net);
-}
-
static void cleanup_net(struct work_struct *work)
{
struct pernet_operations *ops;
{
/* Cleanup the network namespace in process context */
INIT_WORK(&net->work, cleanup_net);
- schedule_work(&net->work);
+ queue_work(netns_wq, &net->work);
}
EXPORT_SYMBOL_GPL(__put_net);
net_cachep = kmem_cache_create("net_namespace", sizeof(struct net),
SMP_CACHE_BYTES,
SLAB_PANIC, NULL);
+
+ /* Create workqueue for cleanup */
+ netns_wq = create_singlethread_workqueue("netns");
+ if (!netns_wq)
+ panic("Could not create netns workq");
#endif
+
mutex_lock(&net_mutex);
err = setup_net(&init_net);
pure_initcall(net_ns_init);
+#ifdef CONFIG_NET_NS
static int register_pernet_operations(struct list_head *list,
struct pernet_operations *ops)
{
ops->exit(net);
}
+#else
+
+static int register_pernet_operations(struct list_head *list,
+ struct pernet_operations *ops)
+{
+ if (ops->init == NULL)
+ return 0;
+ return ops->init(&init_net);
+}
+
+static void unregister_pernet_operations(struct pernet_operations *ops)
+{
+ if (ops->exit)
+ ops->exit(&init_net);
+}
+#endif
+
/**
* register_pernet_subsys - register a network namespace subsystem
* @ops: pernet operations structure for the subsystem
* @ops: pernet operations structure to manipulate
*
* Remove the pernet operations structure from the list to be
- * used when network namespaces are created or destoryed. In
+ * used when network namespaces are created or destroyed. In
* addition run the exit method for all existing network
* namespaces.
*/
* @ops: pernet operations structure to manipulate
*
* Remove the pernet operations structure from the list to be
- * used when network namespaces are created or destoryed. In
+ * used when network namespaces are created or destroyed. In
* addition run the exit method for all existing network
* namespaces.
*/