l2tp_ip_protocol 654 net/l2tp/l2tp_ip.c static struct net_protocol l2tp_ip_protocol __read_mostly = { l2tp_ip_protocol 669 net/l2tp/l2tp_ip.c err = inet_add_protocol(&l2tp_ip_protocol, IPPROTO_L2TP); l2tp_ip_protocol 685 net/l2tp/l2tp_ip.c inet_del_protocol(&l2tp_ip_protocol, IPPROTO_L2TP);