| 1 | /*
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| 2 | * TAP-Win32 -- A kernel driver to provide virtual tap device functionality
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| 3 | * on Windows. Originally derived from the CIPE-Win32
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| 4 | * project by Damion K. Wilson, with extensive modifications by
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| 5 | * James Yonan.
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| 6 | *
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| 7 | * All source code which derives from the CIPE-Win32 project is
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| 8 | * Copyright (C) Damion K. Wilson, 2003, and is released under the
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| 9 | * GPL version 2 (see below).
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| 10 | *
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| 11 | * All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
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| 12 | * and is released under the GPL version 2 (see below).
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| 13 | *
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| 14 | * This program is free software; you can redistribute it and/or modify
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| 15 | * it under the terms of the GNU General Public License version 2
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| 16 | * as published by the Free Software Foundation.
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| 17 | *
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| 18 | * This program is distributed in the hope that it will be useful,
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 21 | * GNU General Public License for more details.
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| 22 | *
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| 23 | * You should have received a copy of the GNU General Public License
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| 24 | * along with this program (see the file COPYING included with this
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| 25 | * distribution); if not, write to the Free Software Foundation, Inc.,
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| 26 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 27 | */
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| 28 |
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| 29 | //====================================================================
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| 30 | // Product and Version public settings
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| 31 | //====================================================================
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| 32 |
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| 33 | #define PRODUCT_STRING "VirtualBox TAP Adapter"
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| 34 |
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| 35 | #define TAP_NDIS_MAJOR_VERSION 5
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| 36 | #define TAP_NDIS_MINOR_VERSION 0
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| 37 |
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| 38 | //===========================================================
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| 39 | // Driver constants
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| 40 | //===========================================================
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| 41 |
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| 42 | #define ETHERNET_HEADER_SIZE (sizeof (ETH_HEADER))
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| 43 | #define ETHERNET_MTU 1500
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| 44 | #define ETHERNET_PACKET_SIZE (ETHERNET_MTU + ETHERNET_HEADER_SIZE)
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| 45 | #define DEFAULT_PACKET_LOOKAHEAD (ETHERNET_PACKET_SIZE)
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| 46 |
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| 47 | #define NIC_MAX_MCAST_LIST 32 // Max length of multicast address list
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| 48 |
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| 49 | #define MINIMUM_MTU 576 // USE TCP Minimum MTU
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| 50 | #define MAXIMUM_MTU 65536 // IP maximum MTU
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| 51 |
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| 52 | #define PACKET_QUEUE_SIZE 64 // tap -> userspace queue size
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| 53 | #define IRP_QUEUE_SIZE 16 // max number of simultaneous i/o operations from userspace
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| 54 |
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| 55 | #define TAP_LITTLE_ENDIAN // affects ntohs, htonl, etc. functions
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