;-*- tab-wide: 4 -*-
init_modules()
	ipsec_init()
		proc_net_create()
		ipsec_tdbinit()		// transform descriptor block ¥Æ¡¼¥Ö¥ë
		ipsec_radijinit()	// radix tree
		pfkey_init()		// pfkey
		register_netdevice_notifier()
		inet_add_protocol()	// esp,ah,ipcomp
		ipsec_tunnel_init_devices()
			register_netdev(&dev_ipsec[0-3])
				ipsec_tunnel_probe(dev)
					ipsec_tunnel_init(dev)
						dev->open 
						=> ipsec_tunnel_open(dev)
						   MOD_INC_USE_COUNT
						dev->stop 
						=> ipsec_tunnel_close(dev)
						   MOD_DEC_USE_COUNT
						dev->hard_start_xmit 
						=> ipsec_tunnel_start_xmit(skb, dev) // call by dev_queue_xmit()
						   ipsec_findroute(sockaddr_encap) // important !
								DEV_QUEUE_XMIT(skb, physdev, )					   
						dev->get_status	
						=> ipsec_tunnel_get_stats(dev)
						dev->priv		// points struct ipsecpriv
						dev->do_ioctl	
						=> ipsec_tunnel_ioctl(dev, ifr, cmd)
						dev->neigh_setup  
						=> ipsec_tunnel_neigh_setup_dev(dev, neigh_parms)
						dev_init_buffers(dev);
		ipsec_sysctl_register()
			register_sysctl_table(ipsec_root_table, 0)


cleanup_module()
	ipsec_cleanup()
		ipsec_sysctl_unregister()
			unregister_sysctl_table(ipsec_table_header)
		ipsec_tunnel_cleanup_devices()
			unregister_netdev()
		inet_del_protocol() // ah, esp,comp
		unregister_netdevice_notifier(ipsec_dev_notifier)
		ipsec_tdbcleanup()
		ipsec_radijcleanup()
		pfkey_cleanup()
			sock_unregister(PF_KEY)
			supported_remove_all() // ah, esp, ipcomp, ipip
			proc_net_unregister()