/* $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd 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. * * : $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_ /* Refer to if_tunvar.h for the softc stuff */ /* Maximum transmit packet size (default) */ #define TUNMTU 1500 /* Maximum receive packet size (hard limit) */ #define TUNMRU 16384 struct tuninfo { int baudrate; /* linespeed */ short mtu; /* maximum transmission unit */ u_char type; /* ethernet, tokenring, etc. */ u_char dummy; /* place holder */ }; /* ioctl's for get/set debug */ #define TUNSDEBUG _IOW('t', 90, int) #define TUNGDEBUG _IOR('t', 89, int) #define TUNSIFINFO _IOW('t', 91, struct tuninfo) #define TUNGIFINFO _IOR('t', 92, struct tuninfo) #endif /* !_NET_IF_TUN_H_ */