153c9f6c0SAtsushi Murai /* $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd Exp $ */ 253c9f6c0SAtsushi Murai 3b74038e1SAtsushi Murai /* 4b74038e1SAtsushi Murai * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk> 5b74038e1SAtsushi Murai * Nottingham University 1987. 6b74038e1SAtsushi Murai * 7b74038e1SAtsushi Murai * This source may be freely distributed, however I would be interested 8b74038e1SAtsushi Murai * in any changes that are made. 9b74038e1SAtsushi Murai * 10b74038e1SAtsushi Murai * This driver takes packets off the IP i/f and hands them up to a 11b74038e1SAtsushi Murai * user process to have it's wicked way with. This driver has it's 12b74038e1SAtsushi Murai * roots in a similar driver written by Phil Cockcroft (formerly) at 13b74038e1SAtsushi Murai * UCL. This driver is based much more on read/write/select mode of 14b74038e1SAtsushi Murai * operation though. 15b74038e1SAtsushi Murai * 1653c9f6c0SAtsushi Murai * : $Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp 17b74038e1SAtsushi Murai */ 18b74038e1SAtsushi Murai 19b74038e1SAtsushi Murai #ifndef _NET_IF_TUN_H_ 20b74038e1SAtsushi Murai #define _NET_IF_TUN_H_ 21b74038e1SAtsushi Murai 22b74038e1SAtsushi Murai struct tun_softc { 23b74038e1SAtsushi Murai u_short tun_flags; /* misc flags */ 24b74038e1SAtsushi Murai #define TUN_OPEN 0x0001 25b74038e1SAtsushi Murai #define TUN_INITED 0x0002 26b74038e1SAtsushi Murai #define TUN_RCOLL 0x0004 27b74038e1SAtsushi Murai #define TUN_IASET 0x0008 28b74038e1SAtsushi Murai #define TUN_DSTADDR 0x0010 29b74038e1SAtsushi Murai #define TUN_RWAIT 0x0040 30b74038e1SAtsushi Murai #define TUN_ASYNC 0x0080 31b74038e1SAtsushi Murai #define TUN_NBIO 0x0100 3253c9f6c0SAtsushi Murai 33a1153b1aSJulian Elischer #define TUN_READY (TUN_OPEN | TUN_INITED) 3453c9f6c0SAtsushi Murai 35b74038e1SAtsushi Murai struct ifnet tun_if; /* the interface */ 36b74038e1SAtsushi Murai int tun_pgrp; /* the process group - if any */ 3753c9f6c0SAtsushi Murai struct selinfo tun_rsel; /* read select */ 3853c9f6c0SAtsushi Murai struct selinfo tun_wsel; /* write select (not used) */ 39b74038e1SAtsushi Murai }; 40b74038e1SAtsushi Murai 411d389e50SJulian Elischer /* Maximum transmit packet size (default) */ 42c812f23aSBill Fenner #define TUNMTU 1500 43b74038e1SAtsushi Murai 441d389e50SJulian Elischer /* Maximum receive packet size (hard limit) */ 451d389e50SJulian Elischer #define TUNMRU 16384 461d389e50SJulian Elischer 4753c9f6c0SAtsushi Murai struct tuninfo { 4853c9f6c0SAtsushi Murai int baudrate; /* linespeed */ 4953c9f6c0SAtsushi Murai short mtu; /* maximum transmission unit */ 5053c9f6c0SAtsushi Murai u_char type; /* ethernet, tokenring, etc. */ 5153c9f6c0SAtsushi Murai u_char dummy; /* place holder */ 5253c9f6c0SAtsushi Murai }; 5353c9f6c0SAtsushi Murai 54b74038e1SAtsushi Murai /* ioctl's for get/set debug */ 55b74038e1SAtsushi Murai #define TUNSDEBUG _IOW('t', 90, int) 56b74038e1SAtsushi Murai #define TUNGDEBUG _IOR('t', 89, int) 57b74038e1SAtsushi Murai #define TUNSIFINFO _IOW('t', 91, struct tuninfo) 58b74038e1SAtsushi Murai #define TUNGIFINFO _IOR('t', 92, struct tuninfo) 59b74038e1SAtsushi Murai 60b74038e1SAtsushi Murai #endif /* !_NET_IF_TUN_H_ */ 61