Tap driver basically builds in VS2012... fork of tap-windows from OpenVPN (compatible license).

vsprojects/TapDriver/types.h

@@ -0,0 +1,178 @@
+/*
+ *  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
+ */
+
+#ifndef TAP_TYPES_DEFINED
+#define TAP_TYPES_DEFINED
+
+typedef struct _Queue
+{
+  ULONG base;
+  ULONG size;
+  ULONG capacity;
+  ULONG max_size;
+  PVOID data[];
+} Queue;
+
+typedef struct _TapAdapter;
+typedef struct _TapPacket;
+
+typedef union _TapAdapterQuery
+{
+  NDIS_HARDWARE_STATUS m_HardwareStatus;
+  NDIS_MEDIUM m_Medium;
+  NDIS_PHYSICAL_MEDIUM m_PhysicalMedium;
+  UCHAR m_MacAddress [6];
+  UCHAR m_Buffer [256];
+  ULONG m_Long;
+  USHORT m_Short;
+  UCHAR m_Byte;
+}
+TapAdapterQuery, *TapAdapterQueryPointer;
+
+typedef struct _TapExtension
+{
+  // TAP device object and packet queues
+  Queue *m_PacketQueue, *m_IrpQueue;
+  PDEVICE_OBJECT m_TapDevice;
+  NDIS_HANDLE m_TapDeviceHandle;
+  ULONG m_TapOpens;
+
+  // Used to lock packet queues
+  NDIS_SPIN_LOCK m_QueueLock;
+  BOOLEAN m_AllocatedSpinlocks;
+
+  // Used to bracket open/close
+  // state changes.
+  MUTEX m_OpenCloseMutex;
+
+  // True if device has been permanently halted
+  BOOLEAN m_Halt;
+
+  // TAP device name
+  unsigned char *m_TapName;
+  UNICODE_STRING m_UnicodeLinkName;
+  BOOLEAN m_CreatedUnicodeLinkName;
+
+  // Used for device status ioctl only
+  const char *m_LastErrorFilename;
+  int m_LastErrorLineNumber;
+  LONG m_NumTapOpens;
+
+  // Flags
+  BOOLEAN m_TapIsRunning;
+  BOOLEAN m_CalledTapDeviceFreeResources;
+
+  // DPC queue for deferred packet injection
+  BOOLEAN m_InjectDpcInitialized;
+  KDPC m_InjectDpc;
+  NDIS_SPIN_LOCK m_InjectLock;
+  Queue *m_InjectQueue;
+}
+TapExtension, *TapExtensionPointer;
+
+typedef struct _TapPacket
+   {
+#   define TAP_PACKET_SIZE(data_size) (sizeof (TapPacket) + (data_size))
+#   define TP_TUN 0x80000000
+#   define TP_SIZE_MASK      (~TP_TUN)
+    ULONG m_SizeFlags;
+    UCHAR m_Data []; // m_Data must be the last struct member
+   }
+TapPacket, *TapPacketPointer;
+
+typedef struct _InjectPacket
+   {
+#   define INJECT_PACKET_SIZE(data_size) (sizeof (InjectPacket) + (data_size))
+#   define INJECT_PACKET_FREE(ib)  NdisFreeMemory ((ib), INJECT_PACKET_SIZE ((ib)->m_Size), 0)
+    ULONG m_Size;
+    UCHAR m_Data []; // m_Data must be the last struct member
+   }
+InjectPacket, *InjectPacketPointer;
+
+typedef struct _TapAdapter
+{
+# define NAME(a) ((a)->m_NameAnsi.Buffer)
+  ANSI_STRING m_NameAnsi;
+  MACADDR m_MAC;
+  BOOLEAN m_InterfaceIsRunning;
+  NDIS_HANDLE m_MiniportAdapterHandle;
+  LONG m_Rx, m_Tx, m_RxErr, m_TxErr;
+#if PACKET_TRUNCATION_CHECK
+  LONG m_RxTrunc, m_TxTrunc;
+#endif
+  NDIS_MEDIUM m_Medium;
+  ULONG m_Lookahead;
+  ULONG m_MTU;
+
+  // TRUE if adapter should always be
+  // "connected" even when device node
+  // is not open by a userspace process.
+  BOOLEAN m_MediaStateAlwaysConnected;
+
+  // TRUE if device is "connected"
+  BOOLEAN m_MediaState;
+
+  // Adapter power state
+  char m_DeviceState;
+
+  // Info for point-to-point mode
+  BOOLEAN m_tun;
+  IPADDR m_localIP;
+  IPADDR m_remoteNetwork;
+  IPADDR m_remoteNetmask;
+  ETH_HEADER m_TapToUser;
+  ETH_HEADER m_UserToTap;
+  ETH_HEADER m_UserToTap_IPv6;		// same as UserToTap but proto=ipv6
+  MACADDR m_MAC_Broadcast;
+
+  // Used for DHCP server masquerade
+  BOOLEAN m_dhcp_enabled;
+  IPADDR m_dhcp_addr;
+  ULONG m_dhcp_netmask;
+  IPADDR m_dhcp_server_ip;
+  BOOLEAN m_dhcp_server_arp;
+  MACADDR m_dhcp_server_mac;
+  ULONG m_dhcp_lease_time;
+  UCHAR m_dhcp_user_supplied_options_buffer[DHCP_USER_SUPPLIED_OPTIONS_BUFFER_SIZE];
+  ULONG m_dhcp_user_supplied_options_buffer_len;
+  BOOLEAN m_dhcp_received_discover;
+  ULONG m_dhcp_bad_requests;
+
+  // Help to tear down the adapter by keeping
+  // some state information on allocated
+  // resources.
+  BOOLEAN m_CalledAdapterFreeResources;
+  BOOLEAN m_RegisteredAdapterShutdownHandler;
+
+  // Multicast list info
+  NDIS_SPIN_LOCK m_MCLock;
+  BOOLEAN m_MCLockAllocated;
+  ULONG m_MCListSize;
+  MC_LIST m_MCList;
+
+  // Information on the TAP device
+  TapExtension m_Extension;
+} TapAdapter, *TapAdapterPointer;
+
+#endif