static int __init ip6_tunnel_init(void)
{
int err;
if (xfrm6_tunnel_register(&ip4ip6_handler, AF_INET)) {
printk(KERN_ERR "ip6_tunnel init: can't register ip4ip6\n");
err = -EAGAIN;
goto out;
}
if (xfrm6_tunnel_register(&ip6ip6_handler, AF_INET6)) {
printk(KERN_ERR "ip6_tunnel init: can't register ip6ip6\n");
err = -EAGAIN;
goto unreg_ip4ip6;
}
err = register_pernet_gen_device(&ip6_tnl_net_id, &ip6_tnl_net_ops);
if (err < 0)
goto err_pernet;
return 0;
err_pernet:
xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6);
unreg_ip4ip6:
xfrm6_tunnel_deregister(&ip4ip6_handler, AF_INET);
out:
return err;
}
static void __exit ip6_tunnel_cleanup(void)
{
if (xfrm6_tunnel_deregister(&ip4ip6_handler, AF_INET))
printk(KERN_INFO "ip6_tunnel close: can't deregister ip4ip6\n");
if (xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6))
printk(KERN_INFO "ip6_tunnel close: can't deregister ip6ip6\n");
unregister_pernet_device(&ip6_tnl_net_ops);
}
static int __init ip6_tunnel_init(void)
{
int err;
if (xfrm6_tunnel_register(&ip6ip6_handler, AF_INET6)) {
printk(KERN_ERR "ip6ip6 init: can't register tunnel\n");
return -EAGAIN;
}
ip6ip6_fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6tnl0",
ip6ip6_tnl_dev_setup);
if (!ip6ip6_fb_tnl_dev) {
err = -ENOMEM;
goto fail;
}
ip6ip6_fb_tnl_dev->init = ip6ip6_fb_tnl_dev_init;
if ((err = register_netdev(ip6ip6_fb_tnl_dev))) {
free_netdev(ip6ip6_fb_tnl_dev);
goto fail;
}
return 0;
fail:
xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6);
return err;
}
static void __exit ip6_tunnel_cleanup(void)
{
if (xfrm6_tunnel_deregister(&ip6ip6_handler))
printk(KERN_INFO "ip6ip6 close: can't deregister tunnel\n");
unregister_netdev(ip6ip6_fb_tnl_dev);
}
static int __init ip6_tunnel_init(void)
{
int err;
err = register_pernet_gen_device(&ip6_tnl_net_id, &ip6_tnl_net_ops);
if (err < 0)
goto out_pernet;
err = xfrm6_tunnel_register(&ip4ip6_handler, AF_INET);
if (err < 0) {
printk(KERN_ERR "ip6_tunnel init: can't register ip4ip6\n");
goto out_ip4ip6;
}
err = xfrm6_tunnel_register(&ip6ip6_handler, AF_INET6);
if (err < 0) {
printk(KERN_ERR "ip6_tunnel init: can't register ip6ip6\n");
goto out_ip6ip6;
}
return 0;
out_ip6ip6:
xfrm6_tunnel_deregister(&ip4ip6_handler, AF_INET);
out_ip4ip6:
unregister_pernet_gen_device(ip6_tnl_net_id, &ip6_tnl_net_ops);
out_pernet:
return err;
}
static void __exit ip6_tunnel_cleanup(void)
{
if (xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6))
printk(KERN_INFO "ip6ip6 close: can't deregister tunnel\n");
rtnl_lock();
ip6ip6_destroy_tunnels();
rtnl_unlock();
}
static inline int ip6ip6_unregister(void)
{
return xfrm6_tunnel_deregister(&ip6ip6_handler);
}
