/* $OpenBSD: if_tun.h,v 1.5 1997/07/29 05:03:48 deraadt Exp $ */ /* * Copyright (c) 1988, Julian Onions * Nottingham University 1987. * * This source may be freely distributed, however I would be interested * in any changes that are made. * * This driver takes packets off the IP i/f and hands them up to a * user process to have it's wicked way with. This driver has it's * roots in a similar driver written by Phil Cockcroft (formerly) at * UCL. This driver is based much more on read/write/select mode of * operation though. * * from: @Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp */ #ifndef _NET_IF_TUN_H_ #define _NET_IF_TUN_H_ #include #define TUN_OPEN 0x0001 #define TUN_INITED 0x0002 #define TUN_RCOLL 0x0004 #define TUN_IASET 0x0008 #define TUN_DSTADDR 0x0010 #define TUN_RWAIT 0x0040 #define TUN_ASYNC 0x0080 #define TUN_NBIO 0x0100 #define TUN_BRDADDR 0x0200 #define TUN_STAYUP 0x0400 #define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET) struct tunnel_header { u_char tun_af; /* adress family */ }; /* Maximum packet size */ #define TUNMTU 3000 /* ioctl's for get/set debug */ #define TUNSDEBUG _IOW('t', 89, int) #define TUNGDEBUG _IOR('t', 90, int) /* iface info */ struct tuninfo { u_int mtu; u_short type; u_short flags; u_int baudrate; }; #define TUNSIFINFO _IOW('t', 91, struct tuninfo) #define TUNGIFINFO _IOR('t', 92, struct tuninfo) #endif /* !_NET_IF_TUN_H_ */