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authorAlberto Gonzalez Iniesta <agi@inittab.org>2012-02-21 15:53:40 +0100
committerAlberto Gonzalez Iniesta <agi@inittab.org>2012-02-21 15:53:40 +0100
commit349cfa7acb95abe865209a28e417ec74b56f9bba (patch)
treead65334821b587c4ecdd461be84c94305ffdb888 /tap-win32/constants.h
Imported Upstream version 2.2.1upstream/2.2.1
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+/*
+ * TAP-Win32/TAP-Win64 -- 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 1500
+#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