sys/net/tun/if_tun.h

   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 its 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  * $FreeBSD: src/sys/net/if_tun.h,v 1.17 2000/01/23 01:47:12 brian Exp $
  17  * $DragonFly: src/sys/net/tun/if_tun.h,v 1.2 2003/06/17 04:28:48 dillon Exp $
  18  */
  19
  20 #ifndef _NET_IF_TUN_H_
  21 #define _NET_IF_TUN_H_
  22
  23 /* Refer to if_tunvar.h for the softc stuff */
  24
  25 /* Maximum transmit packet size (default) */
  26 #define TUNMTU          1500
  27
  28 /* Maximum receive packet size (hard limit) */
  29 #define TUNMRU          16384
  30
  31 struct tuninfo {
  32         int     baudrate;               /* linespeed */
  33         short   mtu;                    /* maximum transmission unit */
  34         u_char  type;                   /* ethernet, tokenring, etc. */
  35         u_char  dummy;                  /* place holder */
  36 };
  37
  38 /* ioctl's for get/set debug */
  39 #define TUNSDEBUG       _IOW('t', 90, int)
  40 #define TUNGDEBUG       _IOR('t', 89, int)
  41 #define TUNSIFINFO      _IOW('t', 91, struct tuninfo)
  42 #define TUNGIFINFO      _IOR('t', 92, struct tuninfo)
  43 #define TUNSLMODE       _IOW('t', 93, int)
  44 #define TUNSIFMODE      _IOW('t', 94, int)
  45 #define TUNSIFPID       _IO('t', 95)
  46 #define TUNSIFHEAD      _IOW('t', 96, int)
  47 #define TUNGIFHEAD      _IOR('t', 97, int)
  48
  49 #endif /* !_NET_IF_TUN_H_ */