1 files changed, 113 insertions, 0 deletions
diff --git a/windows/TapDriver6/mem.h b/windows/TapDriver6/mem.h
new file mode 100644
index 00000000..a8359e19
--- /dev/null
+++ b/windows/TapDriver6/mem.h
@@ -0,0 +1,113 @@
+/*
+ *  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) 2002-2014 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
+ */
+
+//------------------
+// Memory Management
+//------------------
+
+PVOID
+MemAlloc(
+    __in ULONG p_Size,
+    __in BOOLEAN zero
+    );
+
+VOID
+MemFree(
+    __in PVOID p_Addr,
+    __in ULONG p_Size
+    );
+
+//======================================================================
+// TAP Packet Queue
+//======================================================================
+
+typedef
+struct _TAP_PACKET
+{
+    LIST_ENTRY                  QueueLink;
+
+#   define TAP_PACKET_SIZE(data_size) (sizeof (TAP_PACKET) + (data_size))
+#   define TP_TUN 0x80000000
+#   define TP_SIZE_MASK      (~TP_TUN)
+    ULONG                       m_SizeFlags;
+
+    // m_Data must be the last struct member
+    UCHAR                       m_Data [];
+} TAP_PACKET, *PTAP_PACKET;
+
+#define TAP_PACKET_TAG      '6PAT'  // "TAP6"
+
+typedef struct _TAP_PACKET_QUEUE
+{
+    KSPIN_LOCK      QueueLock;
+    LIST_ENTRY      Queue;
+    ULONG           Count;   // Count of currently queued items
+    ULONG           MaxCount;
+} TAP_PACKET_QUEUE, *PTAP_PACKET_QUEUE;
+
+VOID
+tapPacketQueueInsertTail(
+    __in PTAP_PACKET_QUEUE  TapPacketQueue,
+    __in PTAP_PACKET        TapPacket
+    );
+
+
+// Call with QueueLock held
+PTAP_PACKET
+tapPacketRemoveHeadLocked(
+    __in PTAP_PACKET_QUEUE  TapPacketQueue
+    );
+
+PTAP_PACKET
+tapPacketRemoveHead(
+    __in PTAP_PACKET_QUEUE  TapPacketQueue
+    );
+
+VOID
+tapPacketQueueInitialize(
+    __in PTAP_PACKET_QUEUE  TapPacketQueue
+    );
+
+//----------------------
+// Cancel-Safe IRP Queue
+//----------------------
+
+typedef struct _TAP_IRP_CSQ
+{
+    IO_CSQ          CsqQueue;
+    KSPIN_LOCK      QueueLock;
+    LIST_ENTRY      Queue;
+    ULONG           Count;   // Count of currently queued items
+    ULONG           MaxCount;
+} TAP_IRP_CSQ, *PTAP_IRP_CSQ;
+
+VOID
+tapIrpCsqInitialize(
+    __in PTAP_IRP_CSQ  TapIrpCsq
+    );
+
+VOID
+tapIrpCsqFlush(
+    __in PTAP_IRP_CSQ  TapIrpCsq
+    );