1 /* $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk> 5 * Nottingham University 1987. 6 * 7 * This source may be freely distributed, however I would be interested 8 * in any changes that are made. 9 * 10 * This driver takes packets off the IP i/f and hands them up to a 11 * user process to have it's wicked way with. This driver has it's 12 * roots in a similar driver written by Phil Cockcroft (formerly) at 13 * UCL. This driver is based much more on read/write/select mode of 14 * operation though. 15 * 16 * : $Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp 17 */ 18 19 #ifndef _NET_IF_TUN_H_ 20 #define _NET_IF_TUN_H_ 21 22 struct tun_softc { 23 u_short tun_flags; /* misc flags */ 24 #define TUN_OPEN 0x0001 25 #define TUN_INITED 0x0002 26 #define TUN_RCOLL 0x0004 27 #define TUN_IASET 0x0008 28 #define TUN_DSTADDR 0x0010 29 #define TUN_RWAIT 0x0040 30 #define TUN_ASYNC 0x0080 31 #define TUN_NBIO 0x0100 32 33 #define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET) 34 35 struct ifnet tun_if; /* the interface */ 36 int tun_pgrp; /* the process group - if any */ 37 struct selinfo tun_rsel; /* read select */ 38 struct selinfo tun_wsel; /* write select (not used) */ 39 #if NBPFILTER > 0 40 caddr_t tun_bpf; 41 #endif 42 }; 43 44 /* Maximum packet size */ 45 #define TUNMTU 1500 46 47 struct tuninfo { 48 int baudrate; /* linespeed */ 49 short mtu; /* maximum transmission unit */ 50 u_char type; /* ethernet, tokenring, etc. */ 51 u_char dummy; /* place holder */ 52 }; 53 54 /* ioctl's for get/set debug */ 55 #define TUNSDEBUG _IOW('t', 90, int) 56 #define TUNGDEBUG _IOR('t', 89, int) 57 #define TUNSIFINFO _IOW('t', 91, struct tuninfo) 58 #define TUNGIFINFO _IOR('t', 92, struct tuninfo) 59 60 #endif /* !_NET_IF_TUN_H_ */ 61