func_tree.txt

网上下到的一个很详细介绍VPN基础知识的资料

*
* RCSID $Id: func_tree.txt,v 1.2 1999/04/06 04:54:23 rgb Exp $
*

init_module()
	ipsec_init()
		proc_reg(ipsec_rt)
			proc_net_inode_operations()
			ipsec_rt_get_info()
		proc_reg(ipsec_spi)
			proc_net_inode_operations()
			ipsec_spi_get_info()
		netlink_attach(ipsec_callback)
			ipsec_makeroute()
				rd_key()
				rj_addroute()
			ipsec_breakroute()
			ipsec_findroute()
			gettdb()
			puttdb()
			tdbinit()
		ipsec_radijinit()
			rj_init()
				rj_inithead()
					rj_newpair()
			rj_inithead()
		inet_add_protocol(ah_protocol)
			ah_rcv()
		inet_add_protocol(esp_protocol)
			esp_rcv()
	ipsec_tunnel_init_module()
		register_netdev(&dev_ipsec)
			ipsec_tunnel_probe()
				ipsec_tunnel_init(dev); 
					dev->open               = ipsec_tunnel_open;
					dev->stop               = ipsec_tunnel_close;
					dev->hard_start_xmit    = ipsec_tunnel_start_xmit;
						ipsec_tunnel_do_xmit()
					dev->get_stats	         = ipsec_tunnel_get_stats;
					dev->hard_header        = ipsec_tunnel_hard_header;
					dev->rebuild_header     = ipsec_tunnel_rebuild_header;
					dev->set_mac_address    = ipsec_tunnel_set_mac_address;
					dev->do_ioctl           = ipsec_tunnel_ioctl;
						ipsec_tunnel_attach()
							ipsec_tunnel_hard_header
							ipsec_tunnel_rebuild_header
							ipsec_tunnel_set_mac_address
							ipsec_tunnel_cache_bind
							ipsec_tunnel_cache_update
						*** ipsec_tunnel_detach()
					dev->header_cache_bind 	= ipsec_tunnel_cache_bind;
					dev->header_cache_update= ipsec_tunnel_cache_update;

cleanup_module()
	ipsec_cleanup()
		proc_unregister(&proc_net, 4243)
		proc_unregister(&proc_net, 4242)
		netlink_detach(NETLINK_IPSEC)
		inet_del_protocol(&ah_protocol)
		inet_del_protocol(&esp_protocol)
		*** ipsec_radij_cleanup()
	ipsec_tunnel_cleanup_module(void)
		unregister_netdev(&dev_ipsec);
		kfree_s(dev_ipsec.priv,sizeof(struct enet_statistics));

*
* $Log: func_tree.txt,v $
* Revision 1.2  1999/04/06 04:54:23  rgb
* Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
* patch shell fixes.
*
*