/* * TAP-Windows -- A kernel driver to provide virtual tap * device functionality on Windows. * * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. * * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., * and is released under the GPL version 2 (see below). * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program (see the file COPYING included with this * distribution); if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ //==================================================================== // Product and Version public settings //==================================================================== #define PRODUCT_STRING PRODUCT_TAP_DEVICE_DESCRIPTION #define TAP_NDIS_MAJOR_VERSION 5 #define TAP_NDIS_MINOR_VERSION 0 //=========================================================== // Driver constants //=========================================================== #define ETHERNET_HEADER_SIZE (sizeof (ETH_HEADER)) #define ETHERNET_MTU 2800 // ZeroTier One MTU #define ETHERNET_PACKET_SIZE (ETHERNET_MTU + ETHERNET_HEADER_SIZE) #define DEFAULT_PACKET_LOOKAHEAD (ETHERNET_PACKET_SIZE) #define NIC_MAX_MCAST_LIST 32 // Max length of multicast address list #define MINIMUM_MTU 576 // USE TCP Minimum MTU #define MAXIMUM_MTU 65536 // IP maximum MTU #define PACKET_QUEUE_SIZE 64 // tap -> userspace queue size #define IRP_QUEUE_SIZE 16 // max number of simultaneous i/o operations from userspace #define INJECT_QUEUE_SIZE 16 // DHCP/ARP -> tap injection queue #define TAP_LITTLE_ENDIAN // affects ntohs, htonl, etc. functions