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Diffstat (limited to 'tap-win32/types.h')
| -rwxr-xr-x | tap-win32/types.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/tap-win32/types.h b/tap-win32/types.h new file mode 100755 index 0000000..bdc08e7 --- /dev/null +++ b/tap-win32/types.h @@ -0,0 +1,178 @@ +/* + * 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 + */ + +#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 |