1 /** $MirOS: src/sys/net/if_tun.h,v 1.3 2005/07/04 00:29:45 tg Exp $ */ 2 /* $OpenBSD: if_tun.h,v 1.13 2004/06/25 04:09:03 claudio Exp $ */ 3 4 /* 5 * Copyright (c) 1988, Julian Onions <Julian.Onions@nexor.co.uk> 6 * Nottingham University 1987. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * This driver takes packets off the IP i/f and hands them up to a 32 * user process to have its wicked way with. This driver has its 33 * roots in a similar driver written by Phil Cockcroft (formerly) at 34 * UCL. This driver is based much more on read/write/select mode of 35 * operation though. 36 */ 37 38 #ifndef _NET_IF_TUN_H_ 39 #define _NET_IF_TUN_H_ 40 41 #include <sys/ioccom.h> 42 43 #define TUN_OPEN 0x0001 44 #define TUN_INITED 0x0002 45 #define TUN_RCOLL 0x0004 46 #define TUN_IASET 0x0008 47 #define TUN_DSTADDR 0x0010 48 #define TUN_RWAIT 0x0040 49 #define TUN_ASYNC 0x0080 50 #define TUN_NBIO 0x0100 51 #define TUN_BRDADDR 0x0200 52 #define TUN_STAYUP 0x0400 53 #define TUN_LAYER2 0x0800 54 55 #define TUN_READY (TUN_OPEN | TUN_INITED) 56 57 /* Maximum packet size */ 58 #define TUNMTU 5120 59 60 /* Maximum receive packet size (hard limit) */ 61 #define TUNMRU 16384 62 63 /* iface info */ 64 struct tuninfo { 65 u_int mtu; 66 u_short type; 67 u_short flags; 68 u_int baudrate; 69 }; 70 #define TUNSIFINFO _IOW('t', 91, struct tuninfo) 71 #define TUNGIFINFO _IOR('t', 92, struct tuninfo) 72 73 /* ioctl for changing the broadcast/point-to-point status */ 74 #define TUNSIFMODE _IOW('t', 93, int) 75 76 /* ioctls for get/set debug */ 77 #define TUNSDEBUG _IOW('t', 94, int) 78 #define TUNGDEBUG _IOR('t', 95, int) 79 80 #endif /* _NET_IF_TUN_H_ */ 81