tap-win32.h

   1 /*
   2  *  This file has been borrowed from the Win32 OpenVPN Tap driver
   3  *  (common.h is the original file name).
   4  *
   5  *  TAP-Win32 -- A kernel driver to provide virtual tap device functionality
   6  *               on Windows.  Originally derived from the CIPE-Win32
   7  *               project by Damion K. Wilson, with extensive modifications by
   8  *               James Yonan.
   9  *
  10  *  All source code which derives from the CIPE-Win32 project is
  11  *  Copyright (C) Damion K. Wilson, 2003, and is released under the
  12  *  GPL version 2 (see below).
  13  *
  14  *  All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
  15  *  and is released under the GPL version 2 (see below).
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License version 2
  19  *  as published by the Free Software Foundation.
  20  *
  21  *  This program is distributed in the hope that it will be useful,
  22  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  *  GNU General Public License for more details.
  25  *
  26  *  You should have received a copy of the GNU General Public License
  27  *  along with this program (see the file COPYING included with this
  28  *  distribution); if not, write to the Free Software Foundation, Inc.,
  29  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  30  */
  31
  32 /* ===============================================
  33     This file is included both by OpenVPN and
  34     the TAP-Win32 driver and contains definitions
  35     common to both.
  36    =============================================== */
  37
  38 /* =============
  39     TAP IOCTLs
  40    ============= */
  41
  42 #define TAP_CONTROL_CODE(request,method) \
  43   CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS)
  44
  45 /* Present in 8.1 */
  46
  47 #define TAP_IOCTL_GET_MAC               TAP_CONTROL_CODE (1, METHOD_BUFFERED)
  48 #define TAP_IOCTL_GET_VERSION           TAP_CONTROL_CODE (2, METHOD_BUFFERED)
  49 #define TAP_IOCTL_GET_MTU               TAP_CONTROL_CODE (3, METHOD_BUFFERED)
  50 #define TAP_IOCTL_GET_INFO              TAP_CONTROL_CODE (4, METHOD_BUFFERED)
  51 #define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE (5, METHOD_BUFFERED)
  52 #define TAP_IOCTL_SET_MEDIA_STATUS      TAP_CONTROL_CODE (6, METHOD_BUFFERED)
  53 #define TAP_IOCTL_CONFIG_DHCP_MASQ      TAP_CONTROL_CODE (7, METHOD_BUFFERED)
  54 #define TAP_IOCTL_GET_LOG_LINE          TAP_CONTROL_CODE (8, METHOD_BUFFERED)
  55 #define TAP_IOCTL_CONFIG_DHCP_SET_OPT   TAP_CONTROL_CODE (9, METHOD_BUFFERED)
  56
  57 /* Added in 8.2 */
  58
  59 /* obsoletes TAP_IOCTL_CONFIG_POINT_TO_POINT */
  60 #define TAP_IOCTL_CONFIG_TUN            TAP_CONTROL_CODE (10, METHOD_BUFFERED)
  61
  62 /* =================
  63     Registry keys
  64    ================= */
  65
  66 #define ADAPTER_KEY "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
  67
  68 #define NETWORK_CONNECTIONS_KEY "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
  69
  70 /* ======================
  71     Filesystem prefixes
  72    ====================== */
  73
  74 #define USERMODEDEVICEDIR "\\\\.\\Global\\"
  75 #define SYSDEVICEDIR      "\\Device\\"
  76 #define USERDEVICEDIR     "\\DosDevices\\Global\\"
  77 #define TAPSUFFIX         ".tap"
  78
  79 /* =========================================================
  80     TAP_COMPONENT_ID -- These strings defines the TAP driver
  81     types -- different component IDs can reside in the system
  82     simultaneously.
  83    ========================================================= */
  84
  85 static const char* TAP_COMPONENT_ID[] = { "tap0901", "tap0801", NULL };