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ZeroTierOne
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ZeroTierOne
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windows
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TapDriver
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constants.h

constants.h 2.1 KB
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  1. /*
    2. 

  2.  *  TAP-Windows -- A kernel driver to provide virtual tap
    3. 

  3.  *                 device functionality on Windows.
    4. 

  4.  *
    5. 

  5.  *  This code was inspired by the CIPE-Win32 driver by Damion K. Wilson.
    6. 

  6.  *
    7. 

  7.  *  This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc.,
    8. 

  8.  *  and is released under the GPL version 2 (see below).
    9. 

  9.  *
    10. 

  10.  *  This program is free software; you can redistribute it and/or modify
    11. 

  11.  *  it under the terms of the GNU General Public License version 2
    12. 

  12.  *  as published by the Free Software Foundation.
    13. 

  13.  *
    14. 

  14.  *  This program is distributed in the hope that it will be useful,
    15. 

  15.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    16. 

  16.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17. 

  17.  *  GNU General Public License for more details.
    18. 

  18.  *
    19. 

  19.  *  You should have received a copy of the GNU General Public License
    20. 

  20.  *  along with this program (see the file COPYING included with this
    21. 

  21.  *  distribution); if not, write to the Free Software Foundation, Inc.,
    22. 

  22.  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    23. 

  23.  */
    24. 

  24. 

  25. //====================================================================
    26. 

  26. //                        Product and Version public settings
    27. 

  27. //====================================================================
    28. 

  28. 

  29. #define PRODUCT_STRING PRODUCT_TAP_DEVICE_DESCRIPTION
    30. 

  30. 

  31. #define TAP_NDIS_MAJOR_VERSION 5
    32. 

  32. #define TAP_NDIS_MINOR_VERSION 0
    33. 

  33. 

  34. //===========================================================
    35. 

  35. // Driver constants
    36. 

  36. //===========================================================
    37. 

  37. 

  38. #define ETHERNET_HEADER_SIZE     (sizeof (ETH_HEADER))
    39. 

  39. #define ETHERNET_MTU             2800 // ZeroTier One MTU
    40. 

  40. #define ETHERNET_PACKET_SIZE     (ETHERNET_MTU + ETHERNET_HEADER_SIZE)
    41. 

  41. #define DEFAULT_PACKET_LOOKAHEAD (ETHERNET_PACKET_SIZE)
    42. 

  42. 

  43. #define NIC_MAX_MCAST_LIST 128  // Max length of multicast address list
    44. 

  44. 

  45. #define MINIMUM_MTU 576        // USE TCP Minimum MTU
    46. 

  46. #define MAXIMUM_MTU 65536      // IP maximum MTU
    47. 

  47. 

  48. #define PACKET_QUEUE_SIZE   64 // tap -> userspace queue size
    49. 

  49. #define IRP_QUEUE_SIZE      16 // max number of simultaneous i/o operations from userspace
    50. 

  50. 

  51. #define TAP_LITTLE_ENDIAN      // affects ntohs, htonl, etc. functions
    52.