1 /* 2 * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk> 3 * Nottingham University 1987. 4 * 5 * This source may be freely distributed, however I would be interested 6 * in any changes that are made. 7 * 8 * This driver takes packets off the IP i/f and hands them up to a 9 * user process to have it's wicked way with. This driver has it's 10 * roots in a similar driver written by Phil Cockcroft (formerly) at 11 * UCL. This driver is based much more on read/write/select mode of 12 * operation though. 13 * 14 * from: $Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp 15 * $Id: if_tun.h,v 1.3 1993/12/13 14:27:01 deraadt Exp $ 16 */ 17 18 #ifndef _NET_IF_TUN_H_ 19 #define _NET_IF_TUN_H_ 20 21 struct tun_softc { 22 u_short tun_flags; /* misc flags */ 23 #define TUN_OPEN 0x0001 24 #define TUN_INITED 0x0002 25 #define TUN_RCOLL 0x0004 26 #define TUN_IASET 0x0008 27 #define TUN_DSTADDR 0x0010 28 #ifdef notdef 29 #define TUN_READY 0x0020 30 #else 31 #define TUN_READY (TUN_IASET|TUN_OPEN|TUN_DSTADDR) 32 #endif 33 #define TUN_RWAIT 0x0040 34 #define TUN_ASYNC 0x0080 35 #define TUN_NBIO 0x0100 36 struct ifnet tun_if; /* the interface */ 37 int tun_pgrp; /* the process group - if any */ 38 #if BSD < 199103 39 struct proc *tun_rsel; 40 struct proc *tun_wsel; 41 #else 42 u_char tun_pad; /* explicit alignment */ 43 struct selinfo tun_sel; /* bsd select info */ 44 #endif 45 #if NBPFILTER > 0 46 caddr_t tun_bpf; 47 #endif 48 }; 49 50 /* Maximum packet size */ 51 #define TUNMTU 1500 52 53 /* ioctl's for get/set debug */ 54 #ifdef __NetBSD__ 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 #else /* Assume BSDI */ 60 #define TUNSDEBUG _IOW('T', 90, int) 61 #define TUNGDEBUG _IOR('T', 89, int) 62 #define TUNSIFINFO _IOW('T', 91, struct tuninfo) 63 #define TUNGIFINFO _IOR('T', 92, struct tuninfo) 64 #endif 65 66 struct tuninfo { 67 int tif_baudrate; /* linespeed */ 68 short tif_mtu; /* maximum transmission unit */ 69 u_char tif_type; /* ethernet, tokenring, etc. */ 70 u_char tif_dummy; /* place holder */ 71 }; 72 #endif /* !_NET_IF_TUN_H_ */ 73