mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-21 05:53:09 +00:00
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
|
|
* 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
|
|
);
|