-EXPORT_SYMBOL_GPL(init_net);
-
-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);
-}
-
-static void cleanup_net(struct work_struct *work)
-{
- struct pernet_operations *ops;
- struct net *net;
-
- net = container_of(work, struct net, work);
-
- mutex_lock(&net_mutex);
-
- /* Don't let anyone else find us. */
- rtnl_lock();
- list_del(&net->list);
- rtnl_unlock();
-
- /* Run all of the network namespace exit methods */
- list_for_each_entry_reverse(ops, &pernet_list, list) {
- if (ops->exit)
- ops->exit(net);
- }
-
- mutex_unlock(&net_mutex);
-
- /* Ensure there are no outstanding rcu callbacks using this
- * network namespace.
- */
- rcu_barrier();
-
- /* Finally it is safe to free my network namespace structure */
- net_free(net);
-}
-
-
-void __put_net(struct net *net)
-{
- /* Cleanup the network namespace in process context */
- INIT_WORK(&net->work, cleanup_net);
- schedule_work(&net->work);
-}
-EXPORT_SYMBOL_GPL(__put_net);