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@@ -0,0 +1,3147 @@
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+/*
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+ * TAP-Windows -- A kernel driver to provide virtual tap
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+ * device functionality on Windows.
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+ *
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+ * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson.
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+ *
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+ * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc.,
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+ * and is released under the GPL version 2 (see below).
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2
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+ * as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program (see the file COPYING included with this
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+ * distribution); if not, write to the Free Software Foundation, Inc.,
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+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ */
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+
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+//======================================================
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+// This driver is designed to work on Win 2000 or higher
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+// versions of Windows.
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+//
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+// It is SMP-safe and handles NDIS 5 power management.
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+//
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+// By default we operate as a "tap" virtual ethernet
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+// 802.3 interface, but we can emulate a "tun"
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+// interface (point-to-point IPv4) through the
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+// TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT or
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+// TAP_WIN_IOCTL_CONFIG_TUN ioctl.
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+//======================================================
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+
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+#include "tap-windows.h"
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+#include "config.h"
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+
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+#define NDIS_MINIPORT_DRIVER
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+#define BINARY_COMPATIBLE 0
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+#define NDIS50_MINIPORT 1
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+#define NDIS_WDM 0
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+#define NDIS50 1
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+#define NTSTRSAFE_LIB
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+
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+// Debug info output
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+#define ALSO_DBGPRINT 1
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+#define DEBUGP_AT_DISPATCH 0
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+
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+//========================================================
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+// Check for truncated IPv4 packets, log errors if found.
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+//========================================================
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+#define PACKET_TRUNCATION_CHECK 0
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+
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+//========================================================
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+// EXPERIMENTAL -- Configure TAP device object to be
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+// accessible from non-administrative accounts, based
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+// on an advanced properties setting.
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+//
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+// Duplicates the functionality of OpenVPN's
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+// --allow-nonadmin directive.
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+//========================================================
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+#define ENABLE_NONADMIN 1
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+
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+#if defined(DDKVER_MAJOR) && DDKVER_MAJOR < 5600
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+#include <ndis.h>
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+#include <ntstrsafe.h>
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+#include <ntddk.h>
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+#else
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+#include <ntifs.h>
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+#include <ndis.h>
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+#include <ntstrsafe.h>
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+#endif
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+
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+#include "lock.h"
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+#include "constants.h"
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+#include "proto.h"
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+#include "error.h"
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+#include "endian.h"
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+#include "dhcp.h"
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+#include "types.h"
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+#include "prototypes.h"
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+
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+#include "mem.c"
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+#include "macinfo.c"
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+#include "error.c"
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+#include "dhcp.c"
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+#include "instance.c"
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+
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+#define IS_UP(ta) \
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+ ((ta)->m_InterfaceIsRunning && (ta)->m_Extension.m_TapIsRunning)
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+
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+#define INCREMENT_STAT(s) ++(s)
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+
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+#define NAME_BUFFER_SIZE 80
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+
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+//========================================================
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+// Globals
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+//========================================================
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+
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+NDIS_HANDLE g_NdisWrapperHandle;
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+
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+const UINT g_SupportedOIDList[] = {
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+ OID_GEN_HARDWARE_STATUS,
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+ OID_GEN_MEDIA_SUPPORTED,
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+ OID_GEN_MEDIA_IN_USE,
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+ OID_GEN_MAXIMUM_LOOKAHEAD,
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+ OID_GEN_MAC_OPTIONS,
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+ OID_GEN_LINK_SPEED,
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+ OID_GEN_TRANSMIT_BLOCK_SIZE,
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+ OID_GEN_RECEIVE_BLOCK_SIZE,
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+ OID_GEN_VENDOR_DESCRIPTION,
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+ OID_GEN_DRIVER_VERSION,
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+ OID_GEN_XMIT_OK,
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+ OID_GEN_RCV_OK,
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+ OID_GEN_XMIT_ERROR,
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+ OID_GEN_RCV_ERROR,
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+ OID_802_3_PERMANENT_ADDRESS,
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+ OID_802_3_CURRENT_ADDRESS,
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+ OID_GEN_RCV_NO_BUFFER,
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+ OID_802_3_RCV_ERROR_ALIGNMENT,
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+ OID_802_3_XMIT_ONE_COLLISION,
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+ OID_802_3_XMIT_MORE_COLLISIONS,
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+ OID_802_3_MULTICAST_LIST,
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+ OID_802_3_MAXIMUM_LIST_SIZE,
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+ OID_GEN_VENDOR_ID,
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+ OID_GEN_CURRENT_LOOKAHEAD,
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+ OID_GEN_CURRENT_PACKET_FILTER,
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+ OID_GEN_PROTOCOL_OPTIONS,
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+ OID_GEN_MAXIMUM_TOTAL_SIZE,
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+ OID_GEN_TRANSMIT_BUFFER_SPACE,
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+ OID_GEN_RECEIVE_BUFFER_SPACE,
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+ OID_GEN_MAXIMUM_FRAME_SIZE,
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+ OID_GEN_VENDOR_DRIVER_VERSION,
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+ OID_GEN_MAXIMUM_SEND_PACKETS,
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+ OID_GEN_MEDIA_CONNECT_STATUS,
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+ OID_GEN_SUPPORTED_LIST
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+};
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+
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+//============================================================
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+// Driver Entry
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+//============================================================
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+#pragma NDIS_INIT_FUNCTION (DriverEntry)
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+
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+DRIVER_INITIALIZE DriverEntry;
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+NTSTATUS
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+DriverEntry (IN PDRIVER_OBJECT p_DriverObject,
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+ IN PUNICODE_STRING p_RegistryPath)
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+{
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+ NDIS_STATUS l_Status = NDIS_STATUS_FAILURE;
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+ NDIS_MINIPORT_CHARACTERISTICS *l_Properties = NULL;
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+
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+ //========================================================
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+ // Notify NDIS that a new miniport driver is initializing.
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+ //========================================================
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+
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+ NdisMInitializeWrapper (&g_NdisWrapperHandle,
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+ p_DriverObject,
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+ p_RegistryPath, NULL);
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+
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+ //======================
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+ // Global initialization
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+ //======================
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+
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+#if DBG
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+ MyDebugInit (10000); // Allocate debugging text space
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+#endif
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+
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+ if (!InitInstanceList ())
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+ {
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+ DEBUGP (("[TAP] Allocation failed for adapter instance list\n"));
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+ goto cleanup;
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+ }
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+
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+ //=======================================
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+ // Set and register miniport entry points
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+ //=======================================
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+
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+ l_Properties = MemAlloc (sizeof (NDIS_MINIPORT_CHARACTERISTICS), TRUE);
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+
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+ if (l_Properties == NULL)
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+ {
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+ DEBUGP (("[TAP] Allocation failed for miniport entry points\n"));
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+ goto cleanup;
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+ }
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+
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+ l_Properties->MajorNdisVersion = TAP_NDIS_MAJOR_VERSION;
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+ l_Properties->MinorNdisVersion = TAP_NDIS_MINOR_VERSION;
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+ l_Properties->InitializeHandler = AdapterCreate;
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+ l_Properties->HaltHandler = AdapterHalt;
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+ l_Properties->ResetHandler = AdapterReset; /* DISPATCH_LEVEL */
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+ l_Properties->TransferDataHandler = AdapterReceive; /* DISPATCH_LEVEL */
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+ l_Properties->SendHandler = AdapterTransmit; /* DISPATCH_LEVEL */
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+ l_Properties->QueryInformationHandler = AdapterQuery; /* DISPATCH_LEVEL */
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+ l_Properties->SetInformationHandler = AdapterModify; /* DISPATCH_LEVEL */
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+
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+ switch (l_Status =
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+ NdisMRegisterMiniport (g_NdisWrapperHandle, l_Properties,
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+ sizeof (NDIS_MINIPORT_CHARACTERISTICS)))
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+ {
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+ case NDIS_STATUS_SUCCESS:
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+ {
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+ DEBUGP (("[TAP] version [%d.%d] %s %s registered miniport successfully\n",
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+ TAP_DRIVER_MAJOR_VERSION,
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+ TAP_DRIVER_MINOR_VERSION,
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+ __DATE__,
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+ __TIME__));
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+ DEBUGP (("Registry Path: '%.*S'\n", p_RegistryPath->Length/2, p_RegistryPath->Buffer));
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+ break;
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+ }
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+
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+ case NDIS_STATUS_BAD_CHARACTERISTICS:
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+ {
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+ DEBUGP (("[TAP] Miniport characteristics were badly defined\n"));
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+ NdisTerminateWrapper (g_NdisWrapperHandle, NULL);
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+ break;
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+ }
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+
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+ case NDIS_STATUS_BAD_VERSION:
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+ {
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+ DEBUGP
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+ (("[TAP] NDIS Version is wrong for the given characteristics\n"));
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+ NdisTerminateWrapper (g_NdisWrapperHandle, NULL);
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+ break;
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+ }
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+
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+ case NDIS_STATUS_RESOURCES:
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+ {
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+ DEBUGP (("[TAP] Insufficient resources\n"));
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+ NdisTerminateWrapper (g_NdisWrapperHandle, NULL);
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+ break;
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+ }
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+
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+ default:
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+ case NDIS_STATUS_FAILURE:
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+ {
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+ DEBUGP (("[TAP] Unknown fatal registration error\n"));
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+ NdisTerminateWrapper (g_NdisWrapperHandle, NULL);
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+ break;
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+ }
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+ }
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+
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+ cleanup:
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+ if (l_Properties)
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+ MemFree (l_Properties, sizeof (NDIS_MINIPORT_CHARACTERISTICS));
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+
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+ if (l_Status == NDIS_STATUS_SUCCESS)
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+ NdisMRegisterUnloadHandler (g_NdisWrapperHandle, TapDriverUnload);
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+ else
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+ TapDriverUnload (p_DriverObject);
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+
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+ return l_Status;
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+}
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+
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+//============================================================
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+// Driver Unload
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+//============================================================
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+DRIVER_UNLOAD TapDriverUnload;
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+VOID
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+TapDriverUnload (IN PDRIVER_OBJECT p_DriverObject)
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+{
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+ DEBUGP (("[TAP] version [%d.%d] %s %s unloaded, instances=%d, imbs=%d\n",
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+ TAP_DRIVER_MAJOR_VERSION,
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+ TAP_DRIVER_MINOR_VERSION,
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+ __DATE__,
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+ __TIME__,
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+ NInstances(),
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+ InstanceMaxBucketSize()));
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+
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+ FreeInstanceList ();
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+
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+ //==============================
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+ // Free debugging text space
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+ //==============================
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+#if DBG
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+ MyDebugFree ();
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+#endif
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+}
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+
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+//==========================================================
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+// Adapter Initialization
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+//==========================================================
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+NDIS_STATUS AdapterCreate
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+(OUT PNDIS_STATUS p_ErrorStatus,
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+ OUT PUINT p_MediaIndex,
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+ IN PNDIS_MEDIUM p_Media,
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+ IN UINT p_MediaCount,
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+ IN NDIS_HANDLE p_AdapterHandle,
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+ IN NDIS_HANDLE p_ConfigurationHandle)
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+{
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+ TapAdapterPointer l_Adapter = NULL;
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+
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+ NDIS_MEDIUM l_PreferredMedium = NdisMedium802_3; // Ethernet
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+ BOOLEAN l_MacFromRegistry = FALSE;
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+ UINT l_Index;
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+ NDIS_STATUS status;
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+
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+#if ENABLE_NONADMIN
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+ BOOLEAN enable_non_admin = FALSE;
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+#endif
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+
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+ DEBUGP (("[TAP] AdapterCreate called\n"));
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+
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+ //====================================
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+ // Make sure adapter type is supported
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+ //====================================
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+
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+ for (l_Index = 0;
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+ l_Index < p_MediaCount && p_Media[l_Index] != l_PreferredMedium;
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+ ++l_Index);
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+
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+ if (l_Index == p_MediaCount)
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+ {
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+ DEBUGP (("[TAP] Unsupported adapter type [wanted: %d]\n",
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+ l_PreferredMedium));
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+ return NDIS_STATUS_UNSUPPORTED_MEDIA;
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+ }
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+
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+ *p_MediaIndex = l_Index;
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+
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+ //=========================================
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+ // Allocate memory for TapAdapter structure
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+ //=========================================
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+
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+ l_Adapter = MemAlloc (sizeof (TapAdapter), TRUE);
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+
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+ if (l_Adapter == NULL)
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+ {
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+ DEBUGP (("[TAP] Couldn't allocate adapter memory\n"));
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+ return NDIS_STATUS_RESOURCES;
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+ }
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+
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+ //==========================================
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+ // Inform the NDIS library about significant
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+ // features of our virtual NIC.
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+ //==========================================
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+
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+ NdisMSetAttributesEx
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+ (p_AdapterHandle,
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+ (NDIS_HANDLE) l_Adapter,
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+ 16,
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+ NDIS_ATTRIBUTE_DESERIALIZE
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+ | NDIS_ATTRIBUTE_IGNORE_PACKET_TIMEOUT
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+ | NDIS_ATTRIBUTE_IGNORE_REQUEST_TIMEOUT
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+ | NDIS_ATTRIBUTE_NO_HALT_ON_SUSPEND,
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+ NdisInterfaceInternal);
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+
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+ //=====================================
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+ // Initialize simple Adapter parameters
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+ //=====================================
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+
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+ l_Adapter->m_Lookahead = DEFAULT_PACKET_LOOKAHEAD;
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+ l_Adapter->m_Medium = l_PreferredMedium;
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+ l_Adapter->m_DeviceState = '?';
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+ l_Adapter->m_MiniportAdapterHandle = p_AdapterHandle;
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+
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+ //==================================
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+ // Allocate spinlock for controlling
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+ // access to multicast address list.
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+ //==================================
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+ NdisAllocateSpinLock (&l_Adapter->m_MCLock);
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+ l_Adapter->m_MCLockAllocated = TRUE;
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+
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+ //====================================================
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+ // Register a shutdown handler which will be called
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+ // on system restart/shutdown to halt our virtual NIC.
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+ //====================================================
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+
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+ NdisMRegisterAdapterShutdownHandler (p_AdapterHandle, l_Adapter,
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+ AdapterHalt);
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+ l_Adapter->m_RegisteredAdapterShutdownHandler = TRUE;
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+
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+ //============================================
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+ // Get parameters from registry which were set
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+ // in the adapter advanced properties dialog.
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+ //============================================
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+ {
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+ NDIS_STATUS status;
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+ NDIS_HANDLE configHandle;
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+ NDIS_CONFIGURATION_PARAMETER *parm;
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+
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+ // set defaults in case our registry query fails
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+ l_Adapter->m_MTU = ETHERNET_MTU;
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+ l_Adapter->m_MediaStateAlwaysConnected = FALSE;
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+ l_Adapter->m_MediaState = FALSE;
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+
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+ NdisOpenConfiguration (&status, &configHandle, p_ConfigurationHandle);
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+ if (status != NDIS_STATUS_SUCCESS)
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+ {
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+ DEBUGP (("[TAP] Couldn't open adapter registry\n"));
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+ AdapterFreeResources (l_Adapter);
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+ return status;
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+ }
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+
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+ //====================================
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+ // Allocate and construct adapter name
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+ //====================================
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+ {
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+
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+ NDIS_STRING mkey = NDIS_STRING_CONST("MiniportName");
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+ NDIS_STRING vkey = NDIS_STRING_CONST("NdisVersion");
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+ NDIS_STATUS vstatus;
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+ NDIS_CONFIGURATION_PARAMETER *vparm;
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+
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+ NdisReadConfiguration (&vstatus, &vparm, configHandle, &vkey, NdisParameterInteger);
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+ if (vstatus == NDIS_STATUS_SUCCESS)
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+ DEBUGP (("[TAP] NdisReadConfiguration NdisVersion=%X\n", vparm->ParameterData.IntegerData));
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+
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+ NdisReadConfiguration (&status, &parm, configHandle, &mkey, NdisParameterString);
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+ if (status == NDIS_STATUS_SUCCESS)
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+ {
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+ if (parm->ParameterType == NdisParameterString)
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|
+ {
|
|
|
+ DEBUGP (("[TAP] NdisReadConfiguration (MiniportName=%.*S)\n",
|
|
|
+ parm->ParameterData.StringData.Length/2,
|
|
|
+ parm->ParameterData.StringData.Buffer));
|
|
|
+
|
|
|
+ if (RtlUnicodeStringToAnsiString (
|
|
|
+ &l_Adapter->m_NameAnsi,
|
|
|
+ &parm->ParameterData.StringData,
|
|
|
+ TRUE) != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] MiniportName failed\n"));
|
|
|
+ status = NDIS_STATUS_RESOURCES;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ /* "MiniportName" is available only XP and above. Not on Windows 2000. */
|
|
|
+ if (vstatus == NDIS_STATUS_SUCCESS && vparm->ParameterData.IntegerData == 0x50000)
|
|
|
+ {
|
|
|
+ /* Fallback for Windows 2000 with NDIS version 5.00.00
|
|
|
+ Don't use this on Vista, 'NDIS_MINIPORT_BLOCK' was changed! */
|
|
|
+ if (RtlUnicodeStringToAnsiString (&l_Adapter->m_NameAnsi,
|
|
|
+ &((struct WIN2K_NDIS_MINIPORT_BLOCK *) p_AdapterHandle)->MiniportName,
|
|
|
+ TRUE) != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] MiniportName (W2K) failed\n"));
|
|
|
+ status = NDIS_STATUS_RESOURCES;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] MiniportName (W2K) succeeded: %s\n", l_Adapter->m_NameAnsi.Buffer));
|
|
|
+ status = NDIS_STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Can't continue without name (see macro 'NAME') */
|
|
|
+ if (status != NDIS_STATUS_SUCCESS || !l_Adapter->m_NameAnsi.Buffer)
|
|
|
+ {
|
|
|
+ NdisCloseConfiguration (configHandle);
|
|
|
+ AdapterFreeResources (l_Adapter);
|
|
|
+ DEBUGP (("[TAP] failed to get miniport name\n"));
|
|
|
+ return NDIS_STATUS_RESOURCES;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Read MTU setting from registry */
|
|
|
+ {
|
|
|
+ NDIS_STRING key = NDIS_STRING_CONST("MTU");
|
|
|
+ NdisReadConfiguration (&status, &parm, configHandle,
|
|
|
+ &key, NdisParameterInteger);
|
|
|
+ if (status == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ if (parm->ParameterType == NdisParameterInteger)
|
|
|
+ {
|
|
|
+ int mtu = parm->ParameterData.IntegerData;
|
|
|
+ if (mtu < MINIMUM_MTU)
|
|
|
+ mtu = MINIMUM_MTU;
|
|
|
+ if (mtu > MAXIMUM_MTU)
|
|
|
+ mtu = MAXIMUM_MTU;
|
|
|
+ l_Adapter->m_MTU = mtu;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Read Media Status setting from registry */
|
|
|
+ {
|
|
|
+ NDIS_STRING key = NDIS_STRING_CONST("MediaStatus");
|
|
|
+ NdisReadConfiguration (&status, &parm, configHandle,
|
|
|
+ &key, NdisParameterInteger);
|
|
|
+ if (status == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ if (parm->ParameterType == NdisParameterInteger)
|
|
|
+ {
|
|
|
+ if (parm->ParameterData.IntegerData)
|
|
|
+ {
|
|
|
+ l_Adapter->m_MediaStateAlwaysConnected = TRUE;
|
|
|
+ l_Adapter->m_MediaState = TRUE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+#if ENABLE_NONADMIN
|
|
|
+ /* Read AllowNonAdmin setting from registry */
|
|
|
+ {
|
|
|
+ NDIS_STRING key = NDIS_STRING_CONST("AllowNonAdmin");
|
|
|
+ NdisReadConfiguration (&status, &parm, configHandle,
|
|
|
+ &key, NdisParameterInteger);
|
|
|
+ if (status == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ if (parm->ParameterType == NdisParameterInteger)
|
|
|
+ {
|
|
|
+ if (parm->ParameterData.IntegerData)
|
|
|
+ {
|
|
|
+ enable_non_admin = TRUE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* Read optional MAC setting from registry */
|
|
|
+ {
|
|
|
+ NDIS_STRING key = NDIS_STRING_CONST("MAC");
|
|
|
+ ANSI_STRING mac_string;
|
|
|
+ NdisReadConfiguration (&status, &parm, configHandle,
|
|
|
+ &key, NdisParameterString);
|
|
|
+ if (status == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ if (parm->ParameterType == NdisParameterString)
|
|
|
+ {
|
|
|
+ if (RtlUnicodeStringToAnsiString (&mac_string, &parm->ParameterData.StringData, TRUE) == STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ l_MacFromRegistry = ParseMAC (l_Adapter->m_MAC, mac_string.Buffer);
|
|
|
+ RtlFreeAnsiString (&mac_string);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ NdisCloseConfiguration (configHandle);
|
|
|
+
|
|
|
+ DEBUGP (("[%s] MTU=%d\n", NAME (l_Adapter), l_Adapter->m_MTU));
|
|
|
+ }
|
|
|
+
|
|
|
+ //==================================
|
|
|
+ // Store and update MAC address info
|
|
|
+ //==================================
|
|
|
+
|
|
|
+ if (!l_MacFromRegistry)
|
|
|
+ GenerateRandomMac (l_Adapter->m_MAC, NAME (l_Adapter));
|
|
|
+
|
|
|
+ DEBUGP (("[%s] Using MAC %x:%x:%x:%x:%x:%x\n",
|
|
|
+ NAME (l_Adapter),
|
|
|
+ l_Adapter->m_MAC[0], l_Adapter->m_MAC[1], l_Adapter->m_MAC[2],
|
|
|
+ l_Adapter->m_MAC[3], l_Adapter->m_MAC[4], l_Adapter->m_MAC[5]));
|
|
|
+
|
|
|
+ //==================
|
|
|
+ // Set broadcast MAC
|
|
|
+ //==================
|
|
|
+ {
|
|
|
+ int i;
|
|
|
+ for (i = 0; i < sizeof (MACADDR); ++i)
|
|
|
+ l_Adapter->m_MAC_Broadcast[i] = 0xFF;
|
|
|
+ }
|
|
|
+
|
|
|
+ //====================================
|
|
|
+ // Initialize TAP device
|
|
|
+ //====================================
|
|
|
+ {
|
|
|
+ NDIS_STATUS tap_status;
|
|
|
+ tap_status = CreateTapDevice (&l_Adapter->m_Extension, NAME (l_Adapter));
|
|
|
+ if (tap_status != NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ AdapterFreeResources (l_Adapter);
|
|
|
+ DEBUGP (("[TAP] CreateTapDevice failed\n"));
|
|
|
+ return tap_status;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!AddAdapterToInstanceList (l_Adapter))
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ TapDeviceFreeResources (&l_Adapter->m_Extension);
|
|
|
+ AdapterFreeResources (l_Adapter);
|
|
|
+ DEBUGP (("[TAP] AddAdapterToInstanceList failed\n"));
|
|
|
+ return NDIS_STATUS_RESOURCES;
|
|
|
+ }
|
|
|
+
|
|
|
+ l_Adapter->m_InterfaceIsRunning = TRUE;
|
|
|
+
|
|
|
+#if ENABLE_NONADMIN
|
|
|
+ if (enable_non_admin)
|
|
|
+ AllowNonAdmin (&l_Adapter->m_Extension);
|
|
|
+#endif
|
|
|
+
|
|
|
+ return NDIS_STATUS_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+VOID
|
|
|
+AdapterHalt (IN NDIS_HANDLE p_AdapterContext)
|
|
|
+{
|
|
|
+ BOOLEAN status;
|
|
|
+
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext;
|
|
|
+
|
|
|
+ NOTE_ERROR ();
|
|
|
+
|
|
|
+ l_Adapter->m_InterfaceIsRunning = FALSE;
|
|
|
+
|
|
|
+ DEBUGP (("[%s] is being halted\n", NAME (l_Adapter)));
|
|
|
+
|
|
|
+ DestroyTapDevice (&l_Adapter->m_Extension);
|
|
|
+
|
|
|
+ // Free resources
|
|
|
+ DEBUGP (("[%s] Freeing Resources\n", NAME (l_Adapter)));
|
|
|
+ AdapterFreeResources (l_Adapter);
|
|
|
+
|
|
|
+ status = RemoveAdapterFromInstanceList (l_Adapter);
|
|
|
+ DEBUGP (("[TAP] RemoveAdapterFromInstanceList returned %d\n", (int) status));
|
|
|
+
|
|
|
+ DEBUGP (("[TAP] version [%d.%d] %s %s AdapterHalt returning\n",
|
|
|
+ TAP_DRIVER_MAJOR_VERSION,
|
|
|
+ TAP_DRIVER_MINOR_VERSION,
|
|
|
+ __DATE__,
|
|
|
+ __TIME__));
|
|
|
+}
|
|
|
+
|
|
|
+VOID
|
|
|
+AdapterFreeResources (TapAdapterPointer p_Adapter)
|
|
|
+{
|
|
|
+ MYASSERT (!p_Adapter->m_CalledAdapterFreeResources);
|
|
|
+ p_Adapter->m_CalledAdapterFreeResources = TRUE;
|
|
|
+
|
|
|
+ if (p_Adapter->m_NameAnsi.Buffer)
|
|
|
+ RtlFreeAnsiString (&p_Adapter->m_NameAnsi);
|
|
|
+
|
|
|
+ if (p_Adapter->m_RegisteredAdapterShutdownHandler)
|
|
|
+ NdisMDeregisterAdapterShutdownHandler (p_Adapter->m_MiniportAdapterHandle);
|
|
|
+
|
|
|
+ if (p_Adapter->m_MCLockAllocated)
|
|
|
+ NdisFreeSpinLock (&p_Adapter->m_MCLock);
|
|
|
+}
|
|
|
+
|
|
|
+VOID
|
|
|
+DestroyTapDevice (TapExtensionPointer p_Extension)
|
|
|
+{
|
|
|
+ DEBUGP (("[%s] Destroying tap device\n", p_Extension->m_TapName));
|
|
|
+
|
|
|
+ //======================================
|
|
|
+ // Let clients know we are shutting down
|
|
|
+ //======================================
|
|
|
+ p_Extension->m_TapIsRunning = FALSE;
|
|
|
+ p_Extension->m_TapOpens = 0;
|
|
|
+ p_Extension->m_Halt = TRUE;
|
|
|
+
|
|
|
+ //=====================================
|
|
|
+ // If we are concurrently executing in
|
|
|
+ // TapDeviceHook or AdapterTransmit,
|
|
|
+ // give those calls time to finish.
|
|
|
+ // Note that we must be running at IRQL
|
|
|
+ // < DISPATCH_LEVEL in order to call
|
|
|
+ // NdisMSleep.
|
|
|
+ //=====================================
|
|
|
+ NdisMSleep (500000);
|
|
|
+
|
|
|
+ //===========================================================
|
|
|
+ // Exhaust IRP and packet queues. Any pending IRPs will
|
|
|
+ // be cancelled, causing user-space to get this error
|
|
|
+ // on overlapped reads:
|
|
|
+ // The I/O operation has been aborted because of either a
|
|
|
+ // thread exit or an application request. (code=995)
|
|
|
+ // It's important that user-space close the device handle
|
|
|
+ // when this code is returned, so that when we finally
|
|
|
+ // do a NdisMDeregisterDevice, the device reference count
|
|
|
+ // is 0. Otherwise the driver will not unload even if the
|
|
|
+ // the last adapter has been halted.
|
|
|
+ //===========================================================
|
|
|
+ FlushQueues (p_Extension);
|
|
|
+ NdisMSleep (500000); // give user space time to respond to IRP cancel
|
|
|
+
|
|
|
+ TapDeviceFreeResources (p_Extension);
|
|
|
+}
|
|
|
+
|
|
|
+VOID
|
|
|
+TapDeviceFreeResources (TapExtensionPointer p_Extension)
|
|
|
+{
|
|
|
+ MYASSERT (p_Extension);
|
|
|
+ MYASSERT (!p_Extension->m_CalledTapDeviceFreeResources);
|
|
|
+ p_Extension->m_CalledTapDeviceFreeResources = TRUE;
|
|
|
+
|
|
|
+ if (p_Extension->m_PacketQueue)
|
|
|
+ QueueFree (p_Extension->m_PacketQueue);
|
|
|
+ if (p_Extension->m_IrpQueue)
|
|
|
+ QueueFree (p_Extension->m_IrpQueue);
|
|
|
+ if (p_Extension->m_InjectQueue)
|
|
|
+ QueueFree (p_Extension->m_InjectQueue);
|
|
|
+
|
|
|
+ if (p_Extension->m_CreatedUnicodeLinkName)
|
|
|
+ RtlFreeUnicodeString (&p_Extension->m_UnicodeLinkName);
|
|
|
+
|
|
|
+ //==========================================================
|
|
|
+ // According to DDK docs, the device is not actually deleted
|
|
|
+ // until its reference count falls to zero. That means we
|
|
|
+ // still need to gracefully fail TapDeviceHook requests
|
|
|
+ // after this point, otherwise ugly things would happen if
|
|
|
+ // the device was disabled (e.g. in the network connections
|
|
|
+ // control panel) while a userspace app still held an open
|
|
|
+ // file handle to it.
|
|
|
+ //==========================================================
|
|
|
+
|
|
|
+ if (p_Extension->m_TapDevice)
|
|
|
+ {
|
|
|
+ BOOLEAN status;
|
|
|
+ status = (NdisMDeregisterDevice (p_Extension->m_TapDeviceHandle)
|
|
|
+ == NDIS_STATUS_SUCCESS);
|
|
|
+ DEBUGP (("[TAP] Deregistering TAP device, status=%d\n", (int)status));
|
|
|
+ }
|
|
|
+
|
|
|
+ if (p_Extension->m_TapName)
|
|
|
+ MemFree (p_Extension->m_TapName, NAME_BUFFER_SIZE);
|
|
|
+
|
|
|
+ if (p_Extension->m_InjectDpcInitialized)
|
|
|
+ KeRemoveQueueDpc (&p_Extension->m_InjectDpc);
|
|
|
+
|
|
|
+ if (p_Extension->m_AllocatedSpinlocks)
|
|
|
+ {
|
|
|
+ NdisFreeSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ NdisFreeSpinLock (&p_Extension->m_InjectLock);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+//========================================================================
|
|
|
+// Tap Device Initialization
|
|
|
+//========================================================================
|
|
|
+
|
|
|
+NDIS_STATUS
|
|
|
+CreateTapDevice (TapExtensionPointer p_Extension, const char *p_Name)
|
|
|
+{
|
|
|
+# define SIZEOF_DISPATCH (sizeof(PDRIVER_DISPATCH) * (IRP_MJ_MAXIMUM_FUNCTION + 1))
|
|
|
+ PDRIVER_DISPATCH *l_Dispatch = NULL;
|
|
|
+ ANSI_STRING l_TapString, l_LinkString;
|
|
|
+ UNICODE_STRING l_TapUnicode;
|
|
|
+ BOOLEAN l_FreeTapUnicode = FALSE;
|
|
|
+ NTSTATUS l_Status, l_Return = NDIS_STATUS_SUCCESS;
|
|
|
+ const char *l_UsableName;
|
|
|
+
|
|
|
+ DEBUGP (("[TAP] version [%d.%d] creating tap device: %s\n",
|
|
|
+ TAP_DRIVER_MAJOR_VERSION,
|
|
|
+ TAP_DRIVER_MINOR_VERSION,
|
|
|
+ p_Name));
|
|
|
+
|
|
|
+ NdisZeroMemory (p_Extension, sizeof (TapExtension));
|
|
|
+
|
|
|
+ INIT_MUTEX (&p_Extension->m_OpenCloseMutex);
|
|
|
+
|
|
|
+ l_LinkString.Buffer = NULL;
|
|
|
+ l_TapString.Buffer = NULL;
|
|
|
+
|
|
|
+ l_TapString.MaximumLength = l_LinkString.MaximumLength = NAME_BUFFER_SIZE;
|
|
|
+
|
|
|
+ //=======================================
|
|
|
+ // Set TAP device entry points
|
|
|
+ //=======================================
|
|
|
+
|
|
|
+ if ((l_Dispatch = MemAlloc (SIZEOF_DISPATCH, TRUE)) == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't alloc TAP dispatch table\n", p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+
|
|
|
+ l_Dispatch[IRP_MJ_DEVICE_CONTROL] = TapDeviceHook;
|
|
|
+ l_Dispatch[IRP_MJ_READ] = TapDeviceHook;
|
|
|
+ l_Dispatch[IRP_MJ_WRITE] = TapDeviceHook;
|
|
|
+ l_Dispatch[IRP_MJ_CREATE] = TapDeviceHook;
|
|
|
+ l_Dispatch[IRP_MJ_CLOSE] = TapDeviceHook;
|
|
|
+
|
|
|
+ //==================================
|
|
|
+ // Find the beginning of the GUID
|
|
|
+ //==================================
|
|
|
+ l_UsableName = p_Name;
|
|
|
+ while (*l_UsableName != '{')
|
|
|
+ {
|
|
|
+ if (*l_UsableName == '\0')
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't find leading '{' in name\n", p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+ ++l_UsableName;
|
|
|
+ }
|
|
|
+
|
|
|
+ //==================================
|
|
|
+ // Allocate pool for TAP device name
|
|
|
+ //==================================
|
|
|
+
|
|
|
+ if ((p_Extension->m_TapName = l_TapString.Buffer =
|
|
|
+ MemAlloc (NAME_BUFFER_SIZE, TRUE)) == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't alloc TAP name buffer\n", p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+
|
|
|
+ //================================================
|
|
|
+ // Allocate pool for TAP symbolic link name buffer
|
|
|
+ //================================================
|
|
|
+
|
|
|
+ if ((l_LinkString.Buffer =
|
|
|
+ MemAlloc (NAME_BUFFER_SIZE, TRUE)) == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't alloc TAP symbolic link name buffer\n",
|
|
|
+ p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+
|
|
|
+ //=======================================================
|
|
|
+ // Set TAP device name
|
|
|
+ //=======================================================
|
|
|
+
|
|
|
+ l_Status = RtlStringCchPrintfExA
|
|
|
+ (l_TapString.Buffer,
|
|
|
+ l_TapString.MaximumLength,
|
|
|
+ NULL,
|
|
|
+ NULL,
|
|
|
+ STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS,
|
|
|
+ "%s%s%s",
|
|
|
+ SYSDEVICEDIR,
|
|
|
+ l_UsableName,
|
|
|
+ TAP_WIN_SUFFIX);
|
|
|
+
|
|
|
+ if (l_Status != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't format TAP device name\n",
|
|
|
+ p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+ l_TapString.Length = (USHORT) strlen (l_TapString.Buffer);
|
|
|
+
|
|
|
+ DEBUGP (("TAP DEV NAME: '%s'\n", l_TapString.Buffer));
|
|
|
+
|
|
|
+ //=======================================================
|
|
|
+ // Set TAP link name
|
|
|
+ //=======================================================
|
|
|
+
|
|
|
+ l_Status = RtlStringCchPrintfExA
|
|
|
+ (l_LinkString.Buffer,
|
|
|
+ l_LinkString.MaximumLength,
|
|
|
+ NULL,
|
|
|
+ NULL,
|
|
|
+ STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS,
|
|
|
+ "%s%s%s",
|
|
|
+ USERDEVICEDIR,
|
|
|
+ l_UsableName,
|
|
|
+ TAP_WIN_SUFFIX);
|
|
|
+
|
|
|
+ if (l_Status != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't format TAP device symbolic link\n",
|
|
|
+ p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+ l_LinkString.Length = (USHORT) strlen (l_LinkString.Buffer);
|
|
|
+
|
|
|
+ DEBUGP (("TAP LINK NAME: '%s'\n", l_LinkString.Buffer));
|
|
|
+
|
|
|
+ //==================================================
|
|
|
+ // Convert strings to unicode
|
|
|
+ //==================================================
|
|
|
+ if (RtlAnsiStringToUnicodeString (&l_TapUnicode, &l_TapString, TRUE) !=
|
|
|
+ STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't alloc TAP unicode name buffer\n",
|
|
|
+ p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+ l_FreeTapUnicode = TRUE;
|
|
|
+
|
|
|
+ if (RtlAnsiStringToUnicodeString
|
|
|
+ (&p_Extension->m_UnicodeLinkName, &l_LinkString, TRUE)
|
|
|
+ != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP
|
|
|
+ (("[%s] Couldn't allocate unicode string for symbolic link name\n",
|
|
|
+ p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+ p_Extension->m_CreatedUnicodeLinkName = TRUE;
|
|
|
+
|
|
|
+ //==================================================
|
|
|
+ // Create new TAP device with symbolic
|
|
|
+ // link and associate with adapter.
|
|
|
+ //==================================================
|
|
|
+
|
|
|
+ l_Status = NdisMRegisterDevice
|
|
|
+ (g_NdisWrapperHandle,
|
|
|
+ &l_TapUnicode,
|
|
|
+ &p_Extension->m_UnicodeLinkName,
|
|
|
+ l_Dispatch,
|
|
|
+ &p_Extension->m_TapDevice,
|
|
|
+ &p_Extension->m_TapDeviceHandle
|
|
|
+ );
|
|
|
+
|
|
|
+ if (l_Status != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't be created\n", p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Set TAP device flags */
|
|
|
+ p_Extension->m_TapDevice->Flags |= DO_DIRECT_IO;
|
|
|
+
|
|
|
+ //========================================================
|
|
|
+ // Initialize Packet and IRP queues.
|
|
|
+ //
|
|
|
+ // The packet queue is used to buffer data which has been
|
|
|
+ // "transmitted" by the virtual NIC, before user space
|
|
|
+ // has had a chance to read it.
|
|
|
+ //
|
|
|
+ // The IRP queue is used to buffer pending I/O requests
|
|
|
+ // from userspace, i.e. read requests on the TAP device
|
|
|
+ // waiting for the system to "transmit" something through
|
|
|
+ // the virtual NIC.
|
|
|
+ //
|
|
|
+ // Basically, packets in the packet queue are used
|
|
|
+ // to satisfy IRP requests in the IRP queue.
|
|
|
+ //
|
|
|
+ // QueueLock is used to lock the packet queue used
|
|
|
+ // for the TAP-Windows NIC -> User Space packet flow direction.
|
|
|
+ //
|
|
|
+ // All accesses to packet or IRP queues should be
|
|
|
+ // bracketed by the QueueLock spinlock,
|
|
|
+ // in order to be SMP-safe.
|
|
|
+ //========================================================
|
|
|
+
|
|
|
+ NdisAllocateSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ NdisAllocateSpinLock (&p_Extension->m_InjectLock);
|
|
|
+ p_Extension->m_AllocatedSpinlocks = TRUE;
|
|
|
+
|
|
|
+ p_Extension->m_PacketQueue = QueueInit (PACKET_QUEUE_SIZE);
|
|
|
+ p_Extension->m_IrpQueue = QueueInit (IRP_QUEUE_SIZE);
|
|
|
+ p_Extension->m_InjectQueue = QueueInit (INJECT_QUEUE_SIZE);
|
|
|
+ if (!p_Extension->m_PacketQueue
|
|
|
+ || !p_Extension->m_IrpQueue
|
|
|
+ || !p_Extension->m_InjectQueue)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] couldn't alloc TAP queues\n", p_Name));
|
|
|
+ l_Return = NDIS_STATUS_RESOURCES;
|
|
|
+ goto cleanup;
|
|
|
+ }
|
|
|
+
|
|
|
+ //=================================================================
|
|
|
+ // Initialize deferred procedure call for DHCP/ARP packet injection
|
|
|
+ //=================================================================
|
|
|
+
|
|
|
+ KeInitializeDpc (&p_Extension->m_InjectDpc, InjectPacketDpc, NULL);
|
|
|
+ p_Extension->m_InjectDpcInitialized = TRUE;
|
|
|
+
|
|
|
+ //========================
|
|
|
+ // Finalize initialization
|
|
|
+ //========================
|
|
|
+
|
|
|
+ p_Extension->m_TapIsRunning = TRUE;
|
|
|
+
|
|
|
+ DEBUGP (("[%s] successfully created TAP device [%s]\n", p_Name,
|
|
|
+ p_Extension->m_TapName));
|
|
|
+
|
|
|
+ cleanup:
|
|
|
+ if (l_FreeTapUnicode)
|
|
|
+ RtlFreeUnicodeString (&l_TapUnicode);
|
|
|
+ if (l_LinkString.Buffer)
|
|
|
+ MemFree (l_LinkString.Buffer, NAME_BUFFER_SIZE);
|
|
|
+ if (l_Dispatch)
|
|
|
+ MemFree (l_Dispatch, SIZEOF_DISPATCH);
|
|
|
+
|
|
|
+ if (l_Return != NDIS_STATUS_SUCCESS)
|
|
|
+ TapDeviceFreeResources (p_Extension);
|
|
|
+
|
|
|
+ return l_Return;
|
|
|
+}
|
|
|
+#undef SIZEOF_DISPATCH
|
|
|
+
|
|
|
+//========================================================
|
|
|
+// Adapter Control
|
|
|
+//========================================================
|
|
|
+NDIS_STATUS
|
|
|
+AdapterReset (OUT PBOOLEAN p_AddressingReset, IN NDIS_HANDLE p_AdapterContext)
|
|
|
+{
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext;
|
|
|
+ DEBUGP (("[%s] is resetting\n", NAME (l_Adapter)));
|
|
|
+ return NDIS_STATUS_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+NDIS_STATUS AdapterReceive
|
|
|
+ (OUT PNDIS_PACKET p_Packet,
|
|
|
+ OUT PUINT p_Transferred,
|
|
|
+ IN NDIS_HANDLE p_AdapterContext,
|
|
|
+ IN NDIS_HANDLE p_ReceiveContext,
|
|
|
+ IN UINT p_Offset,
|
|
|
+ IN UINT p_ToTransfer)
|
|
|
+{
|
|
|
+ return NDIS_STATUS_SUCCESS;
|
|
|
+}
|
|
|
+
|
|
|
+//==============================================================
|
|
|
+// Adapter Option Query/Modification
|
|
|
+//==============================================================
|
|
|
+NDIS_STATUS AdapterQuery
|
|
|
+(IN NDIS_HANDLE p_AdapterContext,
|
|
|
+ IN NDIS_OID p_OID,
|
|
|
+ IN PVOID p_Buffer,
|
|
|
+ IN ULONG p_BufferLength,
|
|
|
+ OUT PULONG p_BytesWritten, OUT PULONG p_BytesNeeded)
|
|
|
+{
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext;
|
|
|
+ TapAdapterQuery l_Query, *l_QueryPtr = &l_Query;
|
|
|
+ NDIS_STATUS l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ UINT l_QueryLength = 4;
|
|
|
+ BOOLEAN lock_succeeded;
|
|
|
+
|
|
|
+ NdisZeroMemory (&l_Query, sizeof (l_Query));
|
|
|
+
|
|
|
+ switch (p_OID)
|
|
|
+ {
|
|
|
+ //===================================================================
|
|
|
+ // Vendor & Driver version Info
|
|
|
+ //===================================================================
|
|
|
+ case OID_GEN_VENDOR_DESCRIPTION:
|
|
|
+ l_QueryPtr = (TapAdapterQueryPointer) PRODUCT_TAP_WIN_DEVICE_DESCRIPTION;
|
|
|
+ l_QueryLength = strlen (PRODUCT_TAP_WIN_DEVICE_DESCRIPTION) + 1;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_VENDOR_ID:
|
|
|
+ l_Query.m_Long = 0xffffff;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_DRIVER_VERSION:
|
|
|
+ l_Query.m_Short =
|
|
|
+ (((USHORT) TAP_NDIS_MAJOR_VERSION) << 8 | (USHORT)
|
|
|
+ TAP_NDIS_MINOR_VERSION);
|
|
|
+ l_QueryLength = sizeof (unsigned short);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_VENDOR_DRIVER_VERSION:
|
|
|
+ l_Query.m_Long =
|
|
|
+ (((USHORT) PRODUCT_TAP_WIN_MAJOR) << 8 | (USHORT)
|
|
|
+ PRODUCT_TAP_WIN_MINOR);
|
|
|
+ break;
|
|
|
+
|
|
|
+ //=================================================================
|
|
|
+ // Statistics
|
|
|
+ //=================================================================
|
|
|
+ case OID_GEN_RCV_NO_BUFFER:
|
|
|
+ l_Query.m_Long = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_802_3_RCV_ERROR_ALIGNMENT:
|
|
|
+ l_Query.m_Long = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_802_3_XMIT_ONE_COLLISION:
|
|
|
+ l_Query.m_Long = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_802_3_XMIT_MORE_COLLISIONS:
|
|
|
+ l_Query.m_Long = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_XMIT_OK:
|
|
|
+ l_Query.m_Long = l_Adapter->m_Tx;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_RCV_OK:
|
|
|
+ l_Query.m_Long = l_Adapter->m_Rx;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_XMIT_ERROR:
|
|
|
+ l_Query.m_Long = l_Adapter->m_TxErr;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_RCV_ERROR:
|
|
|
+ l_Query.m_Long = l_Adapter->m_RxErr;
|
|
|
+ break;
|
|
|
+
|
|
|
+ //===================================================================
|
|
|
+ // Device & Protocol Options
|
|
|
+ //===================================================================
|
|
|
+ case OID_GEN_SUPPORTED_LIST:
|
|
|
+ l_QueryPtr = (TapAdapterQueryPointer) g_SupportedOIDList;
|
|
|
+ l_QueryLength = sizeof (g_SupportedOIDList);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_MAC_OPTIONS:
|
|
|
+ // This MUST be here !!!
|
|
|
+ l_Query.m_Long = (NDIS_MAC_OPTION_RECEIVE_SERIALIZED
|
|
|
+ | NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA
|
|
|
+ | NDIS_MAC_OPTION_NO_LOOPBACK
|
|
|
+ | NDIS_MAC_OPTION_TRANSFERS_NOT_PEND);
|
|
|
+
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_CURRENT_PACKET_FILTER:
|
|
|
+ l_Query.m_Long =
|
|
|
+ (NDIS_PACKET_TYPE_ALL_LOCAL |
|
|
|
+ NDIS_PACKET_TYPE_BROADCAST |
|
|
|
+ NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_ALL_FUNCTIONAL);
|
|
|
+
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_PROTOCOL_OPTIONS:
|
|
|
+ l_Query.m_Long = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ //==================================================================
|
|
|
+ // Device Info
|
|
|
+ //==================================================================
|
|
|
+ case OID_GEN_MEDIA_CONNECT_STATUS:
|
|
|
+ l_Query.m_Long = l_Adapter->m_MediaState
|
|
|
+ ? NdisMediaStateConnected : NdisMediaStateDisconnected;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_HARDWARE_STATUS:
|
|
|
+ l_Query.m_HardwareStatus = NdisHardwareStatusReady;
|
|
|
+ l_QueryLength = sizeof (NDIS_HARDWARE_STATUS);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_MEDIA_SUPPORTED:
|
|
|
+ case OID_GEN_MEDIA_IN_USE:
|
|
|
+ l_Query.m_Medium = l_Adapter->m_Medium;
|
|
|
+ l_QueryLength = sizeof (NDIS_MEDIUM);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_PHYSICAL_MEDIUM:
|
|
|
+ l_Query.m_PhysicalMedium = NdisPhysicalMediumUnspecified;
|
|
|
+ l_QueryLength = sizeof (NDIS_PHYSICAL_MEDIUM);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_LINK_SPEED:
|
|
|
+ l_Query.m_Long = 100000; // rate / 100 bps
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_802_3_PERMANENT_ADDRESS:
|
|
|
+ case OID_802_3_CURRENT_ADDRESS:
|
|
|
+ COPY_MAC (l_Query.m_MacAddress, l_Adapter->m_MAC);
|
|
|
+ l_QueryLength = sizeof (MACADDR);
|
|
|
+ break;
|
|
|
+
|
|
|
+ //==================================================================
|
|
|
+ // Limits
|
|
|
+ //==================================================================
|
|
|
+
|
|
|
+ case OID_GEN_MAXIMUM_SEND_PACKETS:
|
|
|
+ l_Query.m_Long = 1;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_802_3_MAXIMUM_LIST_SIZE:
|
|
|
+ l_Query.m_Long = NIC_MAX_MCAST_LIST;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_CURRENT_LOOKAHEAD:
|
|
|
+ l_Query.m_Long = l_Adapter->m_Lookahead;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_MAXIMUM_LOOKAHEAD:
|
|
|
+ case OID_GEN_MAXIMUM_TOTAL_SIZE:
|
|
|
+ case OID_GEN_RECEIVE_BUFFER_SPACE:
|
|
|
+ case OID_GEN_RECEIVE_BLOCK_SIZE:
|
|
|
+ l_Query.m_Long = DEFAULT_PACKET_LOOKAHEAD;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_MAXIMUM_FRAME_SIZE:
|
|
|
+ case OID_GEN_TRANSMIT_BLOCK_SIZE:
|
|
|
+ case OID_GEN_TRANSMIT_BUFFER_SPACE:
|
|
|
+ l_Query.m_Long = l_Adapter->m_MTU;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_PNP_CAPABILITIES:
|
|
|
+ do
|
|
|
+ {
|
|
|
+ PNDIS_PNP_CAPABILITIES pPNPCapabilities;
|
|
|
+ PNDIS_PM_WAKE_UP_CAPABILITIES pPMstruct;
|
|
|
+
|
|
|
+ if (p_BufferLength >= sizeof (NDIS_PNP_CAPABILITIES))
|
|
|
+ {
|
|
|
+ pPNPCapabilities = (PNDIS_PNP_CAPABILITIES) (p_Buffer);
|
|
|
+
|
|
|
+ //
|
|
|
+ // Setting up the buffer to be returned
|
|
|
+ // to the Protocol above the Passthru miniport
|
|
|
+ //
|
|
|
+ pPMstruct = &pPNPCapabilities->WakeUpCapabilities;
|
|
|
+ pPMstruct->MinMagicPacketWakeUp = NdisDeviceStateUnspecified;
|
|
|
+ pPMstruct->MinPatternWakeUp = NdisDeviceStateUnspecified;
|
|
|
+ pPMstruct->MinLinkChangeWakeUp = NdisDeviceStateUnspecified;
|
|
|
+ }
|
|
|
+ l_QueryLength = sizeof (NDIS_PNP_CAPABILITIES);
|
|
|
+ }
|
|
|
+ while (FALSE);
|
|
|
+ break;
|
|
|
+ case OID_PNP_QUERY_POWER:
|
|
|
+ break;
|
|
|
+
|
|
|
+ // Required OIDs that we don't support
|
|
|
+
|
|
|
+ case OID_GEN_SUPPORTED_GUIDS:
|
|
|
+ case OID_GEN_MEDIA_CAPABILITIES:
|
|
|
+ case OID_TCP_TASK_OFFLOAD:
|
|
|
+ case OID_FFP_SUPPORT:
|
|
|
+ l_Status = NDIS_STATUS_INVALID_OID;
|
|
|
+ break;
|
|
|
+
|
|
|
+ // Optional stats OIDs
|
|
|
+
|
|
|
+ case OID_GEN_DIRECTED_BYTES_XMIT:
|
|
|
+ case OID_GEN_DIRECTED_FRAMES_XMIT:
|
|
|
+ case OID_GEN_MULTICAST_BYTES_XMIT:
|
|
|
+ case OID_GEN_MULTICAST_FRAMES_XMIT:
|
|
|
+ case OID_GEN_BROADCAST_BYTES_XMIT:
|
|
|
+ case OID_GEN_BROADCAST_FRAMES_XMIT:
|
|
|
+ case OID_GEN_DIRECTED_BYTES_RCV:
|
|
|
+ case OID_GEN_DIRECTED_FRAMES_RCV:
|
|
|
+ case OID_GEN_MULTICAST_BYTES_RCV:
|
|
|
+ case OID_GEN_MULTICAST_FRAMES_RCV:
|
|
|
+ case OID_GEN_BROADCAST_BYTES_RCV:
|
|
|
+ case OID_GEN_BROADCAST_FRAMES_RCV:
|
|
|
+ l_Status = NDIS_STATUS_INVALID_OID;
|
|
|
+ break;
|
|
|
+
|
|
|
+ //===================================================================
|
|
|
+ // Not Handled
|
|
|
+ //===================================================================
|
|
|
+ default:
|
|
|
+ DEBUGP (("[%s] Unhandled OID %lx\n", NAME (l_Adapter), p_OID));
|
|
|
+ l_Status = NDIS_STATUS_INVALID_OID;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (l_Status != NDIS_STATUS_SUCCESS)
|
|
|
+ ;
|
|
|
+ else if (l_QueryLength > p_BufferLength)
|
|
|
+ {
|
|
|
+ l_Status = NDIS_STATUS_INVALID_LENGTH;
|
|
|
+ *p_BytesNeeded = l_QueryLength;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ NdisMoveMemory (p_Buffer, (PVOID) l_QueryPtr,
|
|
|
+ (*p_BytesWritten = l_QueryLength));
|
|
|
+
|
|
|
+ return l_Status;
|
|
|
+}
|
|
|
+
|
|
|
+NDIS_STATUS AdapterModify
|
|
|
+(IN NDIS_HANDLE p_AdapterContext,
|
|
|
+ IN NDIS_OID p_OID,
|
|
|
+ IN PVOID p_Buffer,
|
|
|
+ IN ULONG p_BufferLength,
|
|
|
+ OUT PULONG p_BytesRead,
|
|
|
+ OUT PULONG p_BytesNeeded)
|
|
|
+{
|
|
|
+ TapAdapterQueryPointer l_Query = (TapAdapterQueryPointer) p_Buffer;
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext;
|
|
|
+ NDIS_STATUS l_Status = NDIS_STATUS_INVALID_OID;
|
|
|
+ ULONG l_Long;
|
|
|
+
|
|
|
+ switch (p_OID)
|
|
|
+ {
|
|
|
+ //==================================================================
|
|
|
+ // Device Info
|
|
|
+ //==================================================================
|
|
|
+ case OID_802_3_MULTICAST_LIST:
|
|
|
+ DEBUGP (("[%s] Setting [OID_802_3_MULTICAST_LIST]\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+
|
|
|
+ *p_BytesNeeded = sizeof (ETH_ADDR);
|
|
|
+ *p_BytesRead = p_BufferLength;
|
|
|
+
|
|
|
+ if (p_BufferLength % sizeof (ETH_ADDR))
|
|
|
+ l_Status = NDIS_STATUS_INVALID_LENGTH;
|
|
|
+ else if (p_BufferLength > sizeof (MC_LIST))
|
|
|
+ {
|
|
|
+ l_Status = NDIS_STATUS_MULTICAST_FULL;
|
|
|
+ *p_BytesNeeded = sizeof (MC_LIST);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_MCLock);
|
|
|
+
|
|
|
+ NdisZeroMemory(&l_Adapter->m_MCList, sizeof (MC_LIST));
|
|
|
+
|
|
|
+ NdisMoveMemory(&l_Adapter->m_MCList,
|
|
|
+ p_Buffer,
|
|
|
+ p_BufferLength);
|
|
|
+
|
|
|
+ l_Adapter->m_MCListSize = p_BufferLength / sizeof (ETH_ADDR);
|
|
|
+
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_MCLock);
|
|
|
+
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_CURRENT_PACKET_FILTER:
|
|
|
+ l_Status = NDIS_STATUS_INVALID_LENGTH;
|
|
|
+ *p_BytesNeeded = 4;
|
|
|
+
|
|
|
+ if (p_BufferLength >= sizeof (ULONG))
|
|
|
+ {
|
|
|
+ DEBUGP
|
|
|
+ (("[%s] Setting [OID_GEN_CURRENT_PACKET_FILTER] to [0x%02lx]\n",
|
|
|
+ NAME (l_Adapter), l_Query->m_Long));
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ *p_BytesRead = sizeof (ULONG);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_CURRENT_LOOKAHEAD:
|
|
|
+ if (p_BufferLength < sizeof (ULONG))
|
|
|
+ {
|
|
|
+ l_Status = NDIS_STATUS_INVALID_LENGTH;
|
|
|
+ *p_BytesNeeded = 4;
|
|
|
+ }
|
|
|
+ else if (l_Query->m_Long > DEFAULT_PACKET_LOOKAHEAD
|
|
|
+ || l_Query->m_Long <= 0)
|
|
|
+ {
|
|
|
+ l_Status = NDIS_STATUS_INVALID_DATA;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Setting [OID_GEN_CURRENT_LOOKAHEAD] to [%d]\n",
|
|
|
+ NAME (l_Adapter), l_Query->m_Long));
|
|
|
+ l_Adapter->m_Lookahead = l_Query->m_Long;
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ *p_BytesRead = sizeof (ULONG);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_NETWORK_LAYER_ADDRESSES:
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ *p_BytesRead = *p_BytesNeeded = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_GEN_TRANSPORT_HEADER_OFFSET:
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ *p_BytesRead = *p_BytesNeeded = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_PNP_SET_POWER:
|
|
|
+ do
|
|
|
+ {
|
|
|
+ NDIS_DEVICE_POWER_STATE NewDeviceState;
|
|
|
+
|
|
|
+ NewDeviceState = (*(PNDIS_DEVICE_POWER_STATE) p_Buffer);
|
|
|
+
|
|
|
+ switch (NewDeviceState)
|
|
|
+ {
|
|
|
+ case NdisDeviceStateD0:
|
|
|
+ l_Adapter->m_DeviceState = '0';
|
|
|
+ break;
|
|
|
+ case NdisDeviceStateD1:
|
|
|
+ l_Adapter->m_DeviceState = '1';
|
|
|
+ break;
|
|
|
+ case NdisDeviceStateD2:
|
|
|
+ l_Adapter->m_DeviceState = '2';
|
|
|
+ break;
|
|
|
+ case NdisDeviceStateD3:
|
|
|
+ l_Adapter->m_DeviceState = '3';
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ l_Adapter->m_DeviceState = '?';
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ l_Status = NDIS_STATUS_FAILURE;
|
|
|
+
|
|
|
+ //
|
|
|
+ // Check for invalid length
|
|
|
+ //
|
|
|
+ if (p_BufferLength < sizeof (NDIS_DEVICE_POWER_STATE))
|
|
|
+ {
|
|
|
+ l_Status = NDIS_STATUS_INVALID_LENGTH;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (NewDeviceState > NdisDeviceStateD0)
|
|
|
+ {
|
|
|
+ l_Adapter->m_InterfaceIsRunning = FALSE;
|
|
|
+ DEBUGP (("[%s] Power management device state OFF\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ l_Adapter->m_InterfaceIsRunning = TRUE;
|
|
|
+ DEBUGP (("[%s] Power management device state ON\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ }
|
|
|
+
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ while (FALSE);
|
|
|
+
|
|
|
+ if (l_Status == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ *p_BytesRead = sizeof (NDIS_DEVICE_POWER_STATE);
|
|
|
+ *p_BytesNeeded = 0;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ *p_BytesRead = 0;
|
|
|
+ *p_BytesNeeded = sizeof (NDIS_DEVICE_POWER_STATE);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case OID_PNP_REMOVE_WAKE_UP_PATTERN:
|
|
|
+ case OID_PNP_ADD_WAKE_UP_PATTERN:
|
|
|
+ l_Status = NDIS_STATUS_SUCCESS;
|
|
|
+ *p_BytesRead = *p_BytesNeeded = 0;
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ DEBUGP (("[%s] Can't set value for OID %lx\n", NAME (l_Adapter),
|
|
|
+ p_OID));
|
|
|
+ l_Status = NDIS_STATUS_INVALID_OID;
|
|
|
+ *p_BytesRead = *p_BytesNeeded = 0;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return l_Status;
|
|
|
+}
|
|
|
+
|
|
|
+// checksum code for ICMPv6 packet, taken from dhcp.c / udp_checksum
|
|
|
+// see RFC 4443, 2.3, and RFC 2460, 8.1
|
|
|
+USHORT
|
|
|
+icmpv6_checksum (const UCHAR *buf,
|
|
|
+ const int len_icmpv6,
|
|
|
+ const UCHAR *saddr6,
|
|
|
+ const UCHAR *daddr6)
|
|
|
+{
|
|
|
+ USHORT word16;
|
|
|
+ ULONG sum = 0;
|
|
|
+ int i;
|
|
|
+
|
|
|
+ // make 16 bit words out of every two adjacent 8 bit words and
|
|
|
+ // calculate the sum of all 16 bit words
|
|
|
+ for (i = 0; i < len_icmpv6; i += 2){
|
|
|
+ word16 = ((buf[i] << 8) & 0xFF00) + ((i + 1 < len_icmpv6) ? (buf[i+1] & 0xFF) : 0);
|
|
|
+ sum += word16;
|
|
|
+ }
|
|
|
+
|
|
|
+ // add the IPv6 pseudo header which contains the IP source and destination addresses
|
|
|
+ for (i = 0; i < 16; i += 2){
|
|
|
+ word16 =((saddr6[i] << 8) & 0xFF00) + (saddr6[i+1] & 0xFF);
|
|
|
+ sum += word16;
|
|
|
+ }
|
|
|
+ for (i = 0; i < 16; i += 2){
|
|
|
+ word16 =((daddr6[i] << 8) & 0xFF00) + (daddr6[i+1] & 0xFF);
|
|
|
+ sum += word16;
|
|
|
+ }
|
|
|
+
|
|
|
+ // the next-header number and the length of the ICMPv6 packet
|
|
|
+ sum += (USHORT) IPPROTO_ICMPV6 + (USHORT) len_icmpv6;
|
|
|
+
|
|
|
+ // keep only the last 16 bits of the 32 bit calculated sum and add the carries
|
|
|
+ while (sum >> 16)
|
|
|
+ sum = (sum & 0xFFFF) + (sum >> 16);
|
|
|
+
|
|
|
+ // Take the one's complement of sum
|
|
|
+ return ((USHORT) ~sum);
|
|
|
+}
|
|
|
+
|
|
|
+// check IPv6 packet for "is this an IPv6 Neighbor Solicitation that
|
|
|
+// the tap driver needs to answer?"
|
|
|
+// see RFC 4861 4.3 for the different cases
|
|
|
+static IPV6ADDR IPV6_NS_TARGET_MCAST =
|
|
|
+ { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
+ 0x00, 0x00, 0x00, 0x01, 0xff, 0x00, 0x00, 0x08 };
|
|
|
+static IPV6ADDR IPV6_NS_TARGET_UNICAST =
|
|
|
+ { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08 };
|
|
|
+
|
|
|
+BOOLEAN
|
|
|
+HandleIPv6NeighborDiscovery( TapAdapterPointer p_Adapter, UCHAR * m_Data )
|
|
|
+{
|
|
|
+ const ETH_HEADER * e = (ETH_HEADER *) m_Data;
|
|
|
+ const IPV6HDR *ipv6 = (IPV6HDR *) (m_Data + sizeof (ETH_HEADER));
|
|
|
+ const ICMPV6_NS * icmpv6_ns = (ICMPV6_NS *) (m_Data + sizeof (ETH_HEADER) + sizeof (IPV6HDR));
|
|
|
+ ICMPV6_NA_PKT *na;
|
|
|
+ USHORT icmpv6_len, icmpv6_csum;
|
|
|
+
|
|
|
+ // we don't really care about the destination MAC address here
|
|
|
+ // - it's either a multicast MAC, or the userland destination MAC
|
|
|
+ // but since the TAP driver is point-to-point, all packets are "for us"
|
|
|
+
|
|
|
+ // IPv6 target address must be ff02::1::ff00:8 (multicast for
|
|
|
+ // initial NS) or fe80::1 (unicast for recurrent NUD)
|
|
|
+ if ( memcmp( ipv6->daddr, IPV6_NS_TARGET_MCAST,
|
|
|
+ sizeof(IPV6ADDR) ) != 0 &&
|
|
|
+ memcmp( ipv6->daddr, IPV6_NS_TARGET_UNICAST,
|
|
|
+ sizeof(IPV6ADDR) ) != 0 )
|
|
|
+ {
|
|
|
+ return FALSE; // wrong target address
|
|
|
+ }
|
|
|
+
|
|
|
+ // IPv6 Next-Header must be ICMPv6
|
|
|
+ if ( ipv6->nexthdr != IPPROTO_ICMPV6 )
|
|
|
+ {
|
|
|
+ return FALSE; // wrong next-header
|
|
|
+ }
|
|
|
+
|
|
|
+ // ICMPv6 type+code must be 135/0 for NS
|
|
|
+ if ( icmpv6_ns->type != ICMPV6_TYPE_NS ||
|
|
|
+ icmpv6_ns->code != ICMPV6_CODE_0 )
|
|
|
+ {
|
|
|
+ return FALSE; // wrong ICMPv6 type
|
|
|
+ }
|
|
|
+
|
|
|
+ // ICMPv6 target address must be fe80::8 (magic)
|
|
|
+ if ( memcmp( icmpv6_ns->target_addr, IPV6_NS_TARGET_UNICAST,
|
|
|
+ sizeof(IPV6ADDR) ) != 0 )
|
|
|
+ {
|
|
|
+ return FALSE; // not for us
|
|
|
+ }
|
|
|
+
|
|
|
+ // packet identified, build magic response packet
|
|
|
+
|
|
|
+ na = (ICMPV6_NA_PKT *) MemAlloc (sizeof (ICMPV6_NA_PKT), TRUE);
|
|
|
+ if ( !na ) return FALSE;
|
|
|
+
|
|
|
+ //------------------------------------------------
|
|
|
+ // Initialize Neighbour Advertisement reply packet
|
|
|
+ //------------------------------------------------
|
|
|
+
|
|
|
+ // ethernet header
|
|
|
+ na->eth.proto = htons(ETH_P_IPV6);
|
|
|
+ COPY_MAC(na->eth.dest, p_Adapter->m_MAC);
|
|
|
+ COPY_MAC(na->eth.src, p_Adapter->m_TapToUser.dest);
|
|
|
+
|
|
|
+ // IPv6 header
|
|
|
+ na->ipv6.version_prio = ipv6->version_prio;
|
|
|
+ NdisMoveMemory( na->ipv6.flow_lbl, ipv6->flow_lbl,
|
|
|
+ sizeof(na->ipv6.flow_lbl) );
|
|
|
+ icmpv6_len = sizeof(ICMPV6_NA_PKT) - sizeof(ETH_HEADER) - sizeof(IPV6HDR);
|
|
|
+ na->ipv6.payload_len = htons(icmpv6_len);
|
|
|
+ na->ipv6.nexthdr = IPPROTO_ICMPV6;
|
|
|
+ na->ipv6.hop_limit = 255;
|
|
|
+ NdisMoveMemory( na->ipv6.saddr, IPV6_NS_TARGET_UNICAST,
|
|
|
+ sizeof(IPV6ADDR) );
|
|
|
+ NdisMoveMemory( na->ipv6.daddr, ipv6->saddr,
|
|
|
+ sizeof(IPV6ADDR) );
|
|
|
+
|
|
|
+ // ICMPv6
|
|
|
+ na->icmpv6.type = ICMPV6_TYPE_NA;
|
|
|
+ na->icmpv6.code = ICMPV6_CODE_0;
|
|
|
+ na->icmpv6.checksum = 0;
|
|
|
+ na->icmpv6.rso_bits = 0x60; // Solicited + Override
|
|
|
+ NdisZeroMemory( na->icmpv6.reserved, sizeof(na->icmpv6.reserved) );
|
|
|
+ NdisMoveMemory( na->icmpv6.target_addr, IPV6_NS_TARGET_UNICAST,
|
|
|
+ sizeof(IPV6ADDR) );
|
|
|
+
|
|
|
+ // ICMPv6 option "Target Link Layer Address"
|
|
|
+ na->icmpv6.opt_type = ICMPV6_OPTION_TLLA;
|
|
|
+ na->icmpv6.opt_length = ICMPV6_LENGTH_TLLA;
|
|
|
+ COPY_MAC( na->icmpv6.target_macaddr, p_Adapter->m_TapToUser.dest );
|
|
|
+
|
|
|
+ // calculate and set checksum
|
|
|
+ icmpv6_csum = icmpv6_checksum ( (UCHAR*) &(na->icmpv6),
|
|
|
+ icmpv6_len,
|
|
|
+ na->ipv6.saddr,
|
|
|
+ na->ipv6.daddr );
|
|
|
+ na->icmpv6.checksum = htons( icmpv6_csum );
|
|
|
+
|
|
|
+ DUMP_PACKET ("HandleIPv6NeighborDiscovery",
|
|
|
+ (unsigned char *) na,
|
|
|
+ sizeof (ICMPV6_NA_PKT));
|
|
|
+
|
|
|
+ InjectPacketDeferred (p_Adapter, (UCHAR *) na, sizeof (ICMPV6_NA_PKT));
|
|
|
+
|
|
|
+ MemFree (na, sizeof (ICMPV6_NA_PKT));
|
|
|
+
|
|
|
+ return TRUE; // all fine
|
|
|
+}
|
|
|
+
|
|
|
+//====================================================================
|
|
|
+// Adapter Transmission
|
|
|
+//====================================================================
|
|
|
+NDIS_STATUS
|
|
|
+AdapterTransmit (IN NDIS_HANDLE p_AdapterContext,
|
|
|
+ IN PNDIS_PACKET p_Packet,
|
|
|
+ IN UINT p_Flags)
|
|
|
+{
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext;
|
|
|
+ ULONG l_Index = 0, l_PacketLength = 0;
|
|
|
+ UINT l_BufferLength = 0;
|
|
|
+ PIRP l_IRP;
|
|
|
+ TapPacketPointer l_PacketBuffer;
|
|
|
+ PNDIS_BUFFER l_NDIS_Buffer;
|
|
|
+ PUCHAR l_Buffer;
|
|
|
+ PVOID result;
|
|
|
+
|
|
|
+ NdisQueryPacket (p_Packet, NULL, NULL, &l_NDIS_Buffer, &l_PacketLength);
|
|
|
+
|
|
|
+ //====================================================
|
|
|
+ // Here we abandon the transmission attempt if any of
|
|
|
+ // the parameters is wrong or memory allocation fails
|
|
|
+ // but we do not indicate failure. The packet is
|
|
|
+ // silently dropped.
|
|
|
+ //====================================================
|
|
|
+
|
|
|
+ if (l_PacketLength < ETHERNET_HEADER_SIZE || l_PacketLength > 65535)
|
|
|
+ goto exit_fail;
|
|
|
+ else if (!l_Adapter->m_Extension.m_TapOpens || !l_Adapter->m_MediaState)
|
|
|
+ goto exit_success; // Nothing is bound to the TAP device
|
|
|
+
|
|
|
+ if (NdisAllocateMemoryWithTag (&l_PacketBuffer,
|
|
|
+ TAP_PACKET_SIZE (l_PacketLength),
|
|
|
+ '5PAT') != NDIS_STATUS_SUCCESS)
|
|
|
+ goto exit_no_resources;
|
|
|
+
|
|
|
+ if (l_PacketBuffer == NULL)
|
|
|
+ goto exit_no_resources;
|
|
|
+
|
|
|
+ l_PacketBuffer->m_SizeFlags = (l_PacketLength & TP_SIZE_MASK);
|
|
|
+
|
|
|
+ //===========================
|
|
|
+ // Reassemble packet contents
|
|
|
+ //===========================
|
|
|
+
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ l_Index = 0;
|
|
|
+ while (l_NDIS_Buffer && l_Index < l_PacketLength)
|
|
|
+ {
|
|
|
+ ULONG newlen;
|
|
|
+ NdisQueryBuffer (l_NDIS_Buffer, (PVOID *) & l_Buffer,
|
|
|
+ &l_BufferLength);
|
|
|
+ newlen = l_Index + l_BufferLength;
|
|
|
+ if (newlen > l_PacketLength)
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ goto no_queue; /* overflow */
|
|
|
+ }
|
|
|
+ NdisMoveMemory (l_PacketBuffer->m_Data + l_Index, l_Buffer,
|
|
|
+ l_BufferLength);
|
|
|
+ l_Index = newlen;
|
|
|
+ NdisGetNextBuffer (l_NDIS_Buffer, &l_NDIS_Buffer);
|
|
|
+ }
|
|
|
+ if (l_Index != l_PacketLength)
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ goto no_queue; /* underflow */
|
|
|
+ }
|
|
|
+
|
|
|
+ DUMP_PACKET ("AdapterTransmit", l_PacketBuffer->m_Data, l_PacketLength);
|
|
|
+
|
|
|
+ //=====================================================
|
|
|
+ // If IPv4 packet, check whether or not packet
|
|
|
+ // was truncated.
|
|
|
+ //=====================================================
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ IPv4PacketSizeVerify (l_PacketBuffer->m_Data, l_PacketLength, FALSE, "TX", &l_Adapter->m_TxTrunc);
|
|
|
+#endif
|
|
|
+
|
|
|
+ //=====================================================
|
|
|
+ // Are we running in DHCP server masquerade mode?
|
|
|
+ //
|
|
|
+ // If so, catch both DHCP requests and ARP queries
|
|
|
+ // to resolve the address of our virtual DHCP server.
|
|
|
+ //=====================================================
|
|
|
+ if (l_Adapter->m_dhcp_enabled)
|
|
|
+ {
|
|
|
+ const ETH_HEADER *eth = (ETH_HEADER *) l_PacketBuffer->m_Data;
|
|
|
+ const IPHDR *ip = (IPHDR *) (l_PacketBuffer->m_Data + sizeof (ETH_HEADER));
|
|
|
+ const UDPHDR *udp = (UDPHDR *) (l_PacketBuffer->m_Data + sizeof (ETH_HEADER) + sizeof (IPHDR));
|
|
|
+
|
|
|
+ // ARP packet?
|
|
|
+ if (l_PacketLength == sizeof (ARP_PACKET)
|
|
|
+ && eth->proto == htons (ETH_P_ARP)
|
|
|
+ && l_Adapter->m_dhcp_server_arp)
|
|
|
+ {
|
|
|
+ if (ProcessARP (l_Adapter,
|
|
|
+ (PARP_PACKET) l_PacketBuffer->m_Data,
|
|
|
+ l_Adapter->m_dhcp_addr,
|
|
|
+ l_Adapter->m_dhcp_server_ip,
|
|
|
+ ~0,
|
|
|
+ l_Adapter->m_dhcp_server_mac))
|
|
|
+ goto no_queue;
|
|
|
+ }
|
|
|
+
|
|
|
+ // DHCP packet?
|
|
|
+ else if (l_PacketLength >= sizeof (ETH_HEADER) + sizeof (IPHDR) + sizeof (UDPHDR) + sizeof (DHCP)
|
|
|
+ && eth->proto == htons (ETH_P_IP)
|
|
|
+ && ip->version_len == 0x45 // IPv4, 20 byte header
|
|
|
+ && ip->protocol == IPPROTO_UDP
|
|
|
+ && udp->dest == htons (BOOTPS_PORT))
|
|
|
+ {
|
|
|
+ const DHCP *dhcp = (DHCP *) (l_PacketBuffer->m_Data
|
|
|
+ + sizeof (ETH_HEADER)
|
|
|
+ + sizeof (IPHDR)
|
|
|
+ + sizeof (UDPHDR));
|
|
|
+
|
|
|
+ const int optlen = l_PacketLength
|
|
|
+ - sizeof (ETH_HEADER)
|
|
|
+ - sizeof (IPHDR)
|
|
|
+ - sizeof (UDPHDR)
|
|
|
+ - sizeof (DHCP);
|
|
|
+
|
|
|
+ if (optlen > 0) // we must have at least one DHCP option
|
|
|
+ {
|
|
|
+ if (ProcessDHCP (l_Adapter, eth, ip, udp, dhcp, optlen))
|
|
|
+ goto no_queue;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ goto no_queue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //===============================================
|
|
|
+ // In Point-To-Point mode, check to see whether
|
|
|
+ // packet is ARP (handled) or IPv4 (sent to app).
|
|
|
+ // IPv6 packets are inspected for neighbour discovery
|
|
|
+ // (to be handled locally), and the rest is forwarded
|
|
|
+ // all other protocols are dropped
|
|
|
+ //===============================================
|
|
|
+ if (l_Adapter->m_tun)
|
|
|
+ {
|
|
|
+ ETH_HEADER *e;
|
|
|
+
|
|
|
+ if (l_PacketLength < ETHERNET_HEADER_SIZE)
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ e = (ETH_HEADER *) l_PacketBuffer->m_Data;
|
|
|
+
|
|
|
+ switch (ntohs (e->proto))
|
|
|
+ {
|
|
|
+ case ETH_P_ARP:
|
|
|
+
|
|
|
+ // Make sure that packet is the
|
|
|
+ // right size for ARP.
|
|
|
+ if (l_PacketLength != sizeof (ARP_PACKET))
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ ProcessARP (l_Adapter,
|
|
|
+ (PARP_PACKET) l_PacketBuffer->m_Data,
|
|
|
+ l_Adapter->m_localIP,
|
|
|
+ l_Adapter->m_remoteNetwork,
|
|
|
+ l_Adapter->m_remoteNetmask,
|
|
|
+ l_Adapter->m_TapToUser.dest);
|
|
|
+
|
|
|
+ default:
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ case ETH_P_IP:
|
|
|
+
|
|
|
+ // Make sure that packet is large
|
|
|
+ // enough to be IPv4.
|
|
|
+ if (l_PacketLength
|
|
|
+ < ETHERNET_HEADER_SIZE + IP_HEADER_SIZE)
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ // Only accept directed packets,
|
|
|
+ // not broadcasts.
|
|
|
+ if (memcmp (e, &l_Adapter->m_TapToUser, ETHERNET_HEADER_SIZE))
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ // Packet looks like IPv4, queue it.
|
|
|
+ l_PacketBuffer->m_SizeFlags |= TP_TUN;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ETH_P_IPV6:
|
|
|
+ // make sure that packet is large
|
|
|
+ // enough to be IPv6
|
|
|
+ if (l_PacketLength
|
|
|
+ < ETHERNET_HEADER_SIZE + IPV6_HEADER_SIZE)
|
|
|
+ goto no_queue;
|
|
|
+
|
|
|
+ // broadcasts and multicasts are handled specially
|
|
|
+ // (to be implemented)
|
|
|
+
|
|
|
+ // neighbor discovery packets to fe80::8 are special
|
|
|
+ // OpenVPN sets this next-hop to signal "handled by tapdrv"
|
|
|
+ if ( HandleIPv6NeighborDiscovery( l_Adapter,
|
|
|
+ l_PacketBuffer->m_Data ))
|
|
|
+ {
|
|
|
+ goto no_queue;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Packet looks like IPv6, queue it :-)
|
|
|
+ l_PacketBuffer->m_SizeFlags |= TP_TUN;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //===============================================
|
|
|
+ // Push packet onto queue to wait for read from
|
|
|
+ // userspace.
|
|
|
+ //===============================================
|
|
|
+
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ result = NULL;
|
|
|
+ if (IS_UP (l_Adapter))
|
|
|
+ result = QueuePush (l_Adapter->m_Extension.m_PacketQueue, l_PacketBuffer);
|
|
|
+
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if ((TapPacketPointer) result != l_PacketBuffer)
|
|
|
+ {
|
|
|
+ // adapter receive overrun
|
|
|
+ INCREMENT_STAT (l_Adapter->m_TxErr);
|
|
|
+ goto no_queue;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ INCREMENT_STAT (l_Adapter->m_Tx);
|
|
|
+ }
|
|
|
+
|
|
|
+ //============================================================
|
|
|
+ // Cycle through IRPs and packets, try to satisfy each pending
|
|
|
+ // IRP with a queued packet.
|
|
|
+ //============================================================
|
|
|
+ while (TRUE)
|
|
|
+ {
|
|
|
+ l_IRP = NULL;
|
|
|
+ l_PacketBuffer = NULL;
|
|
|
+
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if (IS_UP (l_Adapter)
|
|
|
+ && QueueCount (l_Adapter->m_Extension.m_PacketQueue)
|
|
|
+ && QueueCount (l_Adapter->m_Extension.m_IrpQueue))
|
|
|
+ {
|
|
|
+ l_IRP = (PIRP) QueuePop (l_Adapter->m_Extension.m_IrpQueue);
|
|
|
+ l_PacketBuffer = (TapPacketPointer)
|
|
|
+ QueuePop (l_Adapter->m_Extension.m_PacketQueue);
|
|
|
+ }
|
|
|
+
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ MYASSERT ((l_IRP != NULL) + (l_PacketBuffer != NULL) != 1);
|
|
|
+
|
|
|
+ if (l_IRP && l_PacketBuffer)
|
|
|
+ {
|
|
|
+ CompleteIRP (l_IRP,
|
|
|
+ l_PacketBuffer,
|
|
|
+ IO_NETWORK_INCREMENT);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ }
|
|
|
+
|
|
|
+ return NDIS_STATUS_SUCCESS;
|
|
|
+
|
|
|
+ no_queue:
|
|
|
+ NdisFreeMemory (l_PacketBuffer,
|
|
|
+ TAP_PACKET_SIZE (l_PacketLength),
|
|
|
+ 0);
|
|
|
+
|
|
|
+ exit_success:
|
|
|
+ return NDIS_STATUS_SUCCESS;
|
|
|
+
|
|
|
+ exit_fail:
|
|
|
+ return NDIS_STATUS_FAILURE;
|
|
|
+
|
|
|
+ exit_no_resources:
|
|
|
+ return NDIS_STATUS_RESOURCES;
|
|
|
+}
|
|
|
+
|
|
|
+//======================================================================
|
|
|
+// Hooks for catching TAP device IRP's.
|
|
|
+//======================================================================
|
|
|
+
|
|
|
+DRIVER_DISPATCH TapDeviceHook;
|
|
|
+NTSTATUS
|
|
|
+TapDeviceHook (IN PDEVICE_OBJECT p_DeviceObject, IN PIRP p_IRP)
|
|
|
+{
|
|
|
+ TapAdapterPointer l_Adapter = LookupAdapterInInstanceList (p_DeviceObject);
|
|
|
+ PIO_STACK_LOCATION l_IrpSp;
|
|
|
+ NTSTATUS l_Status = STATUS_SUCCESS;
|
|
|
+ BOOLEAN accessible;
|
|
|
+
|
|
|
+ l_IrpSp = IoGetCurrentIrpStackLocation (p_IRP);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Status = STATUS_SUCCESS;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+
|
|
|
+ if (!l_Adapter || l_Adapter->m_Extension.m_Halt)
|
|
|
+ {
|
|
|
+ DEBUGP (("TapDeviceHook called when TAP device is halted, MajorFunction=%d\n",
|
|
|
+ (int)l_IrpSp->MajorFunction));
|
|
|
+
|
|
|
+ if (l_IrpSp->MajorFunction == IRP_MJ_CLOSE)
|
|
|
+ {
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ return STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ p_IRP->IoStatus.Status = STATUS_NO_SUCH_DEVICE;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ return STATUS_NO_SUCH_DEVICE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (l_IrpSp->MajorFunction)
|
|
|
+ {
|
|
|
+ //===========================================================
|
|
|
+ // Ioctl call handlers
|
|
|
+ //===========================================================
|
|
|
+ case IRP_MJ_DEVICE_CONTROL:
|
|
|
+ {
|
|
|
+ switch (l_IrpSp->Parameters.DeviceIoControl.IoControlCode)
|
|
|
+ {
|
|
|
+ case TAP_WIN_IOCTL_GET_MAC:
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength
|
|
|
+ >= sizeof (MACADDR))
|
|
|
+ {
|
|
|
+ COPY_MAC (p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_Adapter->m_MAC);
|
|
|
+ p_IRP->IoStatus.Information = sizeof (MACADDR);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case TAP_WIN_IOCTL_GET_VERSION:
|
|
|
+ {
|
|
|
+ const ULONG size = sizeof (ULONG) * 3;
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength
|
|
|
+ >= size)
|
|
|
+ {
|
|
|
+ ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0]
|
|
|
+ = TAP_DRIVER_MAJOR_VERSION;
|
|
|
+ ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[1]
|
|
|
+ = TAP_DRIVER_MINOR_VERSION;
|
|
|
+ ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[2]
|
|
|
+#if DBG
|
|
|
+ = 1;
|
|
|
+#else
|
|
|
+ = 0;
|
|
|
+#endif
|
|
|
+ p_IRP->IoStatus.Information = size;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case TAP_WIN_IOCTL_GET_MTU:
|
|
|
+ {
|
|
|
+ const ULONG size = sizeof (ULONG) * 1;
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength
|
|
|
+ >= size)
|
|
|
+ {
|
|
|
+ ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0]
|
|
|
+ = l_Adapter->m_MTU;
|
|
|
+ p_IRP->IoStatus.Information = size;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case TAP_WIN_IOCTL_GET_INFO:
|
|
|
+ {
|
|
|
+ char state[16];
|
|
|
+ if (l_Adapter->m_InterfaceIsRunning)
|
|
|
+ state[0] = 'A';
|
|
|
+ else
|
|
|
+ state[0] = 'a';
|
|
|
+ if (l_Adapter->m_Extension.m_TapIsRunning)
|
|
|
+ state[1] = 'T';
|
|
|
+ else
|
|
|
+ state[1] = 't';
|
|
|
+ state[2] = l_Adapter->m_DeviceState;
|
|
|
+ if (l_Adapter->m_MediaStateAlwaysConnected)
|
|
|
+ state[3] = 'C';
|
|
|
+ else
|
|
|
+ state[3] = 'c';
|
|
|
+ state[4] = '\0';
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Status = l_Status = RtlStringCchPrintfExA (
|
|
|
+ ((LPTSTR) (p_IRP->AssociatedIrp.SystemBuffer)),
|
|
|
+ l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength,
|
|
|
+ NULL,
|
|
|
+ NULL,
|
|
|
+ STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS,
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ "State=%s Err=[%s/%d] #O=%d Tx=[%d,%d,%d] Rx=[%d,%d,%d] IrpQ=[%d,%d,%d] PktQ=[%d,%d,%d] InjQ=[%d,%d,%d]",
|
|
|
+#else
|
|
|
+ "State=%s Err=[%s/%d] #O=%d Tx=[%d,%d] Rx=[%d,%d] IrpQ=[%d,%d,%d] PktQ=[%d,%d,%d] InjQ=[%d,%d,%d]",
|
|
|
+#endif
|
|
|
+ state,
|
|
|
+ g_LastErrorFilename,
|
|
|
+ g_LastErrorLineNumber,
|
|
|
+ (int)l_Adapter->m_Extension.m_NumTapOpens,
|
|
|
+ (int)l_Adapter->m_Tx,
|
|
|
+ (int)l_Adapter->m_TxErr,
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ (int)l_Adapter->m_TxTrunc,
|
|
|
+#endif
|
|
|
+ (int)l_Adapter->m_Rx,
|
|
|
+ (int)l_Adapter->m_RxErr,
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ (int)l_Adapter->m_RxTrunc,
|
|
|
+#endif
|
|
|
+ (int)l_Adapter->m_Extension.m_IrpQueue->size,
|
|
|
+ (int)l_Adapter->m_Extension.m_IrpQueue->max_size,
|
|
|
+ (int)IRP_QUEUE_SIZE,
|
|
|
+ (int)l_Adapter->m_Extension.m_PacketQueue->size,
|
|
|
+ (int)l_Adapter->m_Extension.m_PacketQueue->max_size,
|
|
|
+ (int)PACKET_QUEUE_SIZE,
|
|
|
+ (int)l_Adapter->m_Extension.m_InjectQueue->size,
|
|
|
+ (int)l_Adapter->m_Extension.m_InjectQueue->max_size,
|
|
|
+ (int)INJECT_QUEUE_SIZE
|
|
|
+ );
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information
|
|
|
+ = l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+#if DBG
|
|
|
+ case TAP_WIN_IOCTL_GET_LOG_LINE:
|
|
|
+ {
|
|
|
+ if (GetDebugLine ((LPTSTR)p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength))
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
|
|
|
+ else
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information
|
|
|
+ = l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ case TAP_WIN_IOCTL_CONFIG_TUN:
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >=
|
|
|
+ (sizeof (IPADDR) * 3))
|
|
|
+ {
|
|
|
+ MACADDR dest;
|
|
|
+
|
|
|
+ l_Adapter->m_tun = FALSE;
|
|
|
+
|
|
|
+ GenerateRelatedMAC (dest, l_Adapter->m_MAC, 1);
|
|
|
+
|
|
|
+ l_Adapter->m_localIP = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0];
|
|
|
+ l_Adapter->m_remoteNetwork = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1];
|
|
|
+ l_Adapter->m_remoteNetmask = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[2];
|
|
|
+
|
|
|
+ // sanity check on network/netmask
|
|
|
+ if ((l_Adapter->m_remoteNetwork & l_Adapter->m_remoteNetmask) != l_Adapter->m_remoteNetwork)
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ COPY_MAC (l_Adapter->m_TapToUser.src, l_Adapter->m_MAC);
|
|
|
+ COPY_MAC (l_Adapter->m_TapToUser.dest, dest);
|
|
|
+ COPY_MAC (l_Adapter->m_UserToTap.src, dest);
|
|
|
+ COPY_MAC (l_Adapter->m_UserToTap.dest, l_Adapter->m_MAC);
|
|
|
+
|
|
|
+ l_Adapter->m_TapToUser.proto = l_Adapter->m_UserToTap.proto = htons (ETH_P_IP);
|
|
|
+ l_Adapter->m_UserToTap_IPv6 = l_Adapter->m_UserToTap;
|
|
|
+ l_Adapter->m_UserToTap_IPv6.proto = htons(ETH_P_IPV6);
|
|
|
+
|
|
|
+ l_Adapter->m_tun = TRUE;
|
|
|
+
|
|
|
+ CheckIfDhcpAndTunMode (l_Adapter);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information = 1; // Simple boolean value
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ case TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT: // Obsoleted by TAP_WIN_IOCTL_CONFIG_TUN
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >=
|
|
|
+ (sizeof (IPADDR) * 2))
|
|
|
+ {
|
|
|
+ MACADDR dest;
|
|
|
+
|
|
|
+ l_Adapter->m_tun = FALSE;
|
|
|
+
|
|
|
+ GenerateRelatedMAC (dest, l_Adapter->m_MAC, 1);
|
|
|
+
|
|
|
+ l_Adapter->m_localIP = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0];
|
|
|
+ l_Adapter->m_remoteNetwork = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1];
|
|
|
+ l_Adapter->m_remoteNetmask = ~0;
|
|
|
+
|
|
|
+ COPY_MAC (l_Adapter->m_TapToUser.src, l_Adapter->m_MAC);
|
|
|
+ COPY_MAC (l_Adapter->m_TapToUser.dest, dest);
|
|
|
+ COPY_MAC (l_Adapter->m_UserToTap.src, dest);
|
|
|
+ COPY_MAC (l_Adapter->m_UserToTap.dest, l_Adapter->m_MAC);
|
|
|
+
|
|
|
+ l_Adapter->m_TapToUser.proto = l_Adapter->m_UserToTap.proto = htons (ETH_P_IP);
|
|
|
+ l_Adapter->m_UserToTap_IPv6 = l_Adapter->m_UserToTap;
|
|
|
+ l_Adapter->m_UserToTap_IPv6.proto = htons(ETH_P_IPV6);
|
|
|
+
|
|
|
+ l_Adapter->m_tun = TRUE;
|
|
|
+
|
|
|
+ CheckIfDhcpAndTunMode (l_Adapter);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information = 1; // Simple boolean value
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ case TAP_WIN_IOCTL_SET_MEDIA_STATUS:
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >=
|
|
|
+ (sizeof (ULONG) * 1))
|
|
|
+ {
|
|
|
+ ULONG parm = ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0];
|
|
|
+ SetMediaStatus (l_Adapter, (BOOLEAN) parm);
|
|
|
+ p_IRP->IoStatus.Information = 1;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ case TAP_WIN_IOCTL_CONFIG_DHCP_MASQ:
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >=
|
|
|
+ (sizeof (IPADDR) * 4))
|
|
|
+ {
|
|
|
+ l_Adapter->m_dhcp_enabled = FALSE;
|
|
|
+ l_Adapter->m_dhcp_server_arp = FALSE;
|
|
|
+ l_Adapter->m_dhcp_user_supplied_options_buffer_len = 0;
|
|
|
+
|
|
|
+ // Adapter IP addr / netmask
|
|
|
+ l_Adapter->m_dhcp_addr =
|
|
|
+ ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0];
|
|
|
+ l_Adapter->m_dhcp_netmask =
|
|
|
+ ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1];
|
|
|
+
|
|
|
+ // IP addr of DHCP masq server
|
|
|
+ l_Adapter->m_dhcp_server_ip =
|
|
|
+ ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[2];
|
|
|
+
|
|
|
+ // Lease time in seconds
|
|
|
+ l_Adapter->m_dhcp_lease_time =
|
|
|
+ ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[3];
|
|
|
+
|
|
|
+ GenerateRelatedMAC (l_Adapter->m_dhcp_server_mac, l_Adapter->m_MAC, 2);
|
|
|
+
|
|
|
+ l_Adapter->m_dhcp_enabled = TRUE;
|
|
|
+ l_Adapter->m_dhcp_server_arp = TRUE;
|
|
|
+
|
|
|
+ CheckIfDhcpAndTunMode (l_Adapter);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information = 1; // Simple boolean value
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ case TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT:
|
|
|
+ {
|
|
|
+ if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength <=
|
|
|
+ DHCP_USER_SUPPLIED_OPTIONS_BUFFER_SIZE
|
|
|
+ && l_Adapter->m_dhcp_enabled)
|
|
|
+ {
|
|
|
+ l_Adapter->m_dhcp_user_supplied_options_buffer_len = 0;
|
|
|
+
|
|
|
+ NdisMoveMemory (l_Adapter->m_dhcp_user_supplied_options_buffer,
|
|
|
+ p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.DeviceIoControl.InputBufferLength);
|
|
|
+
|
|
|
+ l_Adapter->m_dhcp_user_supplied_options_buffer_len =
|
|
|
+ l_IrpSp->Parameters.DeviceIoControl.InputBufferLength;
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information = 1; // Simple boolean value
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ }
|
|
|
+
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ default:
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //===========================================================
|
|
|
+ // User mode thread issued a read request on the tap device
|
|
|
+ // If there are packets waiting to be read, then the request
|
|
|
+ // will be satisfied here. If not, then the request will be
|
|
|
+ // queued and satisfied by any packet that is not used to
|
|
|
+ // satisfy requests ahead of it.
|
|
|
+ //===========================================================
|
|
|
+ case IRP_MJ_READ:
|
|
|
+ {
|
|
|
+ TapPacketPointer l_PacketBuffer;
|
|
|
+ BOOLEAN pending = FALSE;
|
|
|
+
|
|
|
+ // Save IRP-accessible copy of buffer length
|
|
|
+ p_IRP->IoStatus.Information = l_IrpSp->Parameters.Read.Length;
|
|
|
+
|
|
|
+ if (p_IRP->MdlAddress == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] MdlAddress is NULL for IRP_MJ_READ\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else if ((p_IRP->AssociatedIrp.SystemBuffer =
|
|
|
+ MmGetSystemAddressForMdlSafe
|
|
|
+ (p_IRP->MdlAddress, NormalPagePriority)) == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Could not map address in IRP_MJ_READ\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INSUFFICIENT_RESOURCES;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else if (!l_Adapter->m_InterfaceIsRunning)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Interface is down in IRP_MJ_READ\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //==================================
|
|
|
+ // Can we provide immediate service?
|
|
|
+ //==================================
|
|
|
+
|
|
|
+ l_PacketBuffer = NULL;
|
|
|
+
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if (IS_UP (l_Adapter)
|
|
|
+ && QueueCount (l_Adapter->m_Extension.m_PacketQueue)
|
|
|
+ && QueueCount (l_Adapter->m_Extension.m_IrpQueue) == 0)
|
|
|
+ {
|
|
|
+ l_PacketBuffer = (TapPacketPointer)
|
|
|
+ QueuePop (l_Adapter->m_Extension.m_PacketQueue);
|
|
|
+ }
|
|
|
+
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if (l_PacketBuffer)
|
|
|
+ {
|
|
|
+ l_Status = CompleteIRP (p_IRP,
|
|
|
+ l_PacketBuffer,
|
|
|
+ IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //=============================
|
|
|
+ // Attempt to pend read request
|
|
|
+ //=============================
|
|
|
+
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if (IS_UP (l_Adapter)
|
|
|
+ && QueuePush (l_Adapter->m_Extension.m_IrpQueue, p_IRP) == (PIRP) p_IRP)
|
|
|
+ {
|
|
|
+ IoSetCancelRoutine (p_IRP, CancelIRPCallback);
|
|
|
+ l_Status = STATUS_PENDING;
|
|
|
+ IoMarkIrpPending (p_IRP);
|
|
|
+ pending = TRUE;
|
|
|
+ }
|
|
|
+
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock);
|
|
|
+
|
|
|
+ if (pending)
|
|
|
+ break;
|
|
|
+
|
|
|
+ // Can't queue anymore IRP's
|
|
|
+ DEBUGP (("[%s] TAP [%s] read IRP overrun\n",
|
|
|
+ NAME (l_Adapter), l_Adapter->m_Extension.m_TapName));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //==============================================================
|
|
|
+ // User mode issued a WriteFile request on the TAP file handle.
|
|
|
+ // The request will always get satisfied here. The call may
|
|
|
+ // fail if there are too many pending packets (queue full).
|
|
|
+ //==============================================================
|
|
|
+ case IRP_MJ_WRITE:
|
|
|
+ {
|
|
|
+ if (p_IRP->MdlAddress == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] MdlAddress is NULL for IRP_MJ_WRITE\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ else if ((p_IRP->AssociatedIrp.SystemBuffer =
|
|
|
+ MmGetSystemAddressForMdlSafe
|
|
|
+ (p_IRP->MdlAddress, NormalPagePriority)) == NULL)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Could not map address in IRP_MJ_WRITE\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_INSUFFICIENT_RESOURCES;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ else if (!l_Adapter->m_InterfaceIsRunning)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Interface is down in IRP_MJ_WRITE\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ else if (!l_Adapter->m_tun && ((l_IrpSp->Parameters.Write.Length) >= ETHERNET_HEADER_SIZE))
|
|
|
+ {
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ p_IRP->IoStatus.Information = l_IrpSp->Parameters.Write.Length;
|
|
|
+
|
|
|
+ DUMP_PACKET ("IRP_MJ_WRITE ETH",
|
|
|
+ (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.Write.Length);
|
|
|
+
|
|
|
+ //=====================================================
|
|
|
+ // If IPv4 packet, check whether or not packet
|
|
|
+ // was truncated.
|
|
|
+ //=====================================================
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ IPv4PacketSizeVerify ((unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.Write.Length,
|
|
|
+ FALSE,
|
|
|
+ "RX",
|
|
|
+ &l_Adapter->m_RxTrunc);
|
|
|
+#endif
|
|
|
+
|
|
|
+ NdisMEthIndicateReceive
|
|
|
+ (l_Adapter->m_MiniportAdapterHandle,
|
|
|
+ (NDIS_HANDLE) l_Adapter,
|
|
|
+ (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ ETHERNET_HEADER_SIZE,
|
|
|
+ (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer + ETHERNET_HEADER_SIZE,
|
|
|
+ l_IrpSp->Parameters.Write.Length - ETHERNET_HEADER_SIZE,
|
|
|
+ l_IrpSp->Parameters.Write.Length - ETHERNET_HEADER_SIZE);
|
|
|
+
|
|
|
+ NdisMEthIndicateReceiveComplete (l_Adapter->m_MiniportAdapterHandle);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] NdisMEthIndicateReceive failed in IRP_MJ_WRITE\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if (l_Adapter->m_tun && ((l_IrpSp->Parameters.Write.Length) >= IP_HEADER_SIZE))
|
|
|
+ {
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ ETH_HEADER * p_UserToTap = &l_Adapter->m_UserToTap;
|
|
|
+
|
|
|
+ // for IPv6, need to use ethernet header with IPv6 proto
|
|
|
+ if ( IPH_GET_VER( ((IPHDR*) p_IRP->AssociatedIrp.SystemBuffer)->version_len) == 6 )
|
|
|
+ {
|
|
|
+ p_UserToTap = &l_Adapter->m_UserToTap_IPv6;
|
|
|
+ }
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Information = l_IrpSp->Parameters.Write.Length;
|
|
|
+
|
|
|
+ DUMP_PACKET2 ("IRP_MJ_WRITE P2P",
|
|
|
+ p_UserToTap,
|
|
|
+ (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.Write.Length);
|
|
|
+
|
|
|
+ //=====================================================
|
|
|
+ // If IPv4 packet, check whether or not packet
|
|
|
+ // was truncated.
|
|
|
+ //=====================================================
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+ IPv4PacketSizeVerify ((unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.Write.Length,
|
|
|
+ TRUE,
|
|
|
+ "RX",
|
|
|
+ &l_Adapter->m_RxTrunc);
|
|
|
+#endif
|
|
|
+
|
|
|
+ NdisMEthIndicateReceive
|
|
|
+ (l_Adapter->m_MiniportAdapterHandle,
|
|
|
+ (NDIS_HANDLE) l_Adapter,
|
|
|
+ (unsigned char *) p_UserToTap,
|
|
|
+ sizeof (ETH_HEADER),
|
|
|
+ (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ l_IrpSp->Parameters.Write.Length,
|
|
|
+ l_IrpSp->Parameters.Write.Length);
|
|
|
+
|
|
|
+ NdisMEthIndicateReceiveComplete (l_Adapter->m_MiniportAdapterHandle);
|
|
|
+
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] NdisMEthIndicateReceive failed in IRP_MJ_WRITE (P2P)\n",
|
|
|
+ NAME (l_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] Bad buffer size in IRP_MJ_WRITE, len=%d\n",
|
|
|
+ NAME (l_Adapter),
|
|
|
+ l_IrpSp->Parameters.Write.Length));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Information = 0; // ETHERNET_HEADER_SIZE;
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (l_Status == STATUS_SUCCESS)
|
|
|
+ INCREMENT_STAT (l_Adapter->m_Rx);
|
|
|
+ else
|
|
|
+ INCREMENT_STAT (l_Adapter->m_RxErr);
|
|
|
+
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //--------------------------------------------------------------
|
|
|
+ // User mode thread has called CreateFile() on the tap device
|
|
|
+ //--------------------------------------------------------------
|
|
|
+ case IRP_MJ_CREATE:
|
|
|
+ {
|
|
|
+ BOOLEAN succeeded = FALSE;
|
|
|
+ BOOLEAN mutex_succeeded;
|
|
|
+
|
|
|
+ DEBUGP
|
|
|
+ (("[%s] [TAP] release [%d.%d] open request (m_TapOpens=%d)\n",
|
|
|
+ NAME (l_Adapter), TAP_DRIVER_MAJOR_VERSION,
|
|
|
+ TAP_DRIVER_MINOR_VERSION, l_Adapter->m_Extension.m_TapOpens));
|
|
|
+
|
|
|
+ ACQUIRE_MUTEX_ADAPTIVE (&l_Adapter->m_Extension.m_OpenCloseMutex, mutex_succeeded);
|
|
|
+ if (mutex_succeeded)
|
|
|
+ {
|
|
|
+ if (l_Adapter->m_Extension.m_TapIsRunning && !l_Adapter->m_Extension.m_TapOpens)
|
|
|
+ {
|
|
|
+ ResetTapAdapterState (l_Adapter);
|
|
|
+ l_Adapter->m_Extension.m_TapOpens = 1;
|
|
|
+ succeeded = TRUE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (succeeded)
|
|
|
+ {
|
|
|
+ INCREMENT_STAT (l_Adapter->m_Extension.m_NumTapOpens);
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] TAP is presently unavailable (m_TapOpens=%d)\n",
|
|
|
+ NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ RELEASE_MUTEX (&l_Adapter->m_Extension.m_OpenCloseMutex);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] TAP is presently locked (m_TapOpens=%d)\n",
|
|
|
+ NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //-----------------------------------------------------------
|
|
|
+ // User mode thread called CloseHandle() on the tap device
|
|
|
+ //-----------------------------------------------------------
|
|
|
+ case IRP_MJ_CLOSE:
|
|
|
+ {
|
|
|
+ BOOLEAN mutex_succeeded;
|
|
|
+
|
|
|
+ DEBUGP (("[%s] [TAP] release [%d.%d] close/cleanup request\n",
|
|
|
+ NAME (l_Adapter), TAP_DRIVER_MAJOR_VERSION,
|
|
|
+ TAP_DRIVER_MINOR_VERSION));
|
|
|
+
|
|
|
+ ACQUIRE_MUTEX_ADAPTIVE (&l_Adapter->m_Extension.m_OpenCloseMutex, mutex_succeeded);
|
|
|
+ if (mutex_succeeded)
|
|
|
+ {
|
|
|
+ l_Adapter->m_Extension.m_TapOpens = 0;
|
|
|
+ ResetTapAdapterState (l_Adapter);
|
|
|
+ FlushQueues (&l_Adapter->m_Extension);
|
|
|
+ SetMediaStatus (l_Adapter, FALSE);
|
|
|
+ RELEASE_MUTEX (&l_Adapter->m_Extension.m_OpenCloseMutex);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] TAP is presently locked (m_TapOpens=%d)\n",
|
|
|
+ NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //------------------
|
|
|
+ // Strange Request
|
|
|
+ //------------------
|
|
|
+ default:
|
|
|
+ {
|
|
|
+ //NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return l_Status;
|
|
|
+}
|
|
|
+
|
|
|
+//=============================================================
|
|
|
+// CompleteIRP is normally called with an adapter -> userspace
|
|
|
+// network packet and an IRP (Pending I/O request) from userspace.
|
|
|
+//
|
|
|
+// The IRP will normally represent a queued overlapped read
|
|
|
+// operation from userspace that is in a wait state.
|
|
|
+//
|
|
|
+// Use the ethernet packet to satisfy the IRP.
|
|
|
+//=============================================================
|
|
|
+
|
|
|
+NTSTATUS
|
|
|
+CompleteIRP (IN PIRP p_IRP,
|
|
|
+ IN TapPacketPointer p_PacketBuffer,
|
|
|
+ IN CCHAR PriorityBoost)
|
|
|
+{
|
|
|
+ NTSTATUS l_Status = STATUS_UNSUCCESSFUL;
|
|
|
+
|
|
|
+ int offset;
|
|
|
+ int len;
|
|
|
+
|
|
|
+ MYASSERT (p_IRP);
|
|
|
+ MYASSERT (p_PacketBuffer);
|
|
|
+
|
|
|
+ IoSetCancelRoutine (p_IRP, NULL); // Disable cancel routine
|
|
|
+
|
|
|
+ //-------------------------------------------
|
|
|
+ // While p_PacketBuffer always contains a
|
|
|
+ // full ethernet packet, including the
|
|
|
+ // ethernet header, in point-to-point mode,
|
|
|
+ // we only want to return the IPv4
|
|
|
+ // component.
|
|
|
+ //-------------------------------------------
|
|
|
+
|
|
|
+ if (p_PacketBuffer->m_SizeFlags & TP_TUN)
|
|
|
+ {
|
|
|
+ offset = ETHERNET_HEADER_SIZE;
|
|
|
+ len = (int) (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK) - ETHERNET_HEADER_SIZE;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ offset = 0;
|
|
|
+ len = (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (len < 0 || (int) p_IRP->IoStatus.Information < len)
|
|
|
+ {
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ p_IRP->IoStatus.Status = STATUS_BUFFER_OVERFLOW;
|
|
|
+ NOTE_ERROR ();
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ p_IRP->IoStatus.Information = len;
|
|
|
+ p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
|
|
|
+
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ NdisMoveMemory (p_IRP->AssociatedIrp.SystemBuffer,
|
|
|
+ p_PacketBuffer->m_Data + offset,
|
|
|
+ len);
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ NOTE_ERROR ();
|
|
|
+ p_IRP->IoStatus.Status = STATUS_UNSUCCESSFUL;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ NdisFreeMemory (p_PacketBuffer,
|
|
|
+ TAP_PACKET_SIZE (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK),
|
|
|
+ 0);
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ }
|
|
|
+
|
|
|
+ if (l_Status == STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ IoCompleteRequest (p_IRP, PriorityBoost);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+
|
|
|
+ return l_Status;
|
|
|
+}
|
|
|
+
|
|
|
+//==============================================
|
|
|
+// IRPs get cancelled for a number of reasons.
|
|
|
+//
|
|
|
+// The TAP device could be closed by userspace
|
|
|
+// when there are still pending read operations.
|
|
|
+//
|
|
|
+// The user could disable the TAP adapter in the
|
|
|
+// network connections control panel, while the
|
|
|
+// device is still open by a process.
|
|
|
+//==============================================
|
|
|
+VOID
|
|
|
+CancelIRPCallback (IN PDEVICE_OBJECT p_DeviceObject,
|
|
|
+ IN PIRP p_IRP)
|
|
|
+{
|
|
|
+ TapAdapterPointer l_Adapter = LookupAdapterInInstanceList (p_DeviceObject);
|
|
|
+ CancelIRP (l_Adapter ? &l_Adapter->m_Extension : NULL, p_IRP, TRUE);
|
|
|
+}
|
|
|
+
|
|
|
+VOID
|
|
|
+CancelIRP (TapExtensionPointer p_Extension,
|
|
|
+ IN PIRP p_IRP,
|
|
|
+ BOOLEAN callback)
|
|
|
+{
|
|
|
+ BOOLEAN exists = FALSE;
|
|
|
+
|
|
|
+ MYASSERT (p_IRP);
|
|
|
+
|
|
|
+ if (p_Extension)
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ exists = (QueueExtract (p_Extension->m_IrpQueue, p_IRP) == p_IRP);
|
|
|
+ NdisReleaseSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ exists = TRUE;
|
|
|
+
|
|
|
+ if (exists)
|
|
|
+ {
|
|
|
+ IoSetCancelRoutine (p_IRP, NULL);
|
|
|
+ p_IRP->IoStatus.Status = STATUS_CANCELLED;
|
|
|
+ p_IRP->IoStatus.Information = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (callback)
|
|
|
+ IoReleaseCancelSpinLock (p_IRP->CancelIrql);
|
|
|
+
|
|
|
+ if (exists)
|
|
|
+ IoCompleteRequest (p_IRP, IO_NO_INCREMENT);
|
|
|
+}
|
|
|
+
|
|
|
+//===========================================
|
|
|
+// Exhaust packet, IRP, and injection queues.
|
|
|
+//===========================================
|
|
|
+VOID
|
|
|
+FlushQueues (TapExtensionPointer p_Extension)
|
|
|
+{
|
|
|
+ PIRP l_IRP;
|
|
|
+ TapPacketPointer l_PacketBuffer;
|
|
|
+ InjectPacketPointer l_InjectBuffer;
|
|
|
+ int n_IRP=0, n_Packet=0, n_Inject=0;
|
|
|
+
|
|
|
+ MYASSERT (p_Extension);
|
|
|
+ MYASSERT (p_Extension->m_TapDevice);
|
|
|
+
|
|
|
+ while (TRUE)
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ l_IRP = QueuePop (p_Extension->m_IrpQueue);
|
|
|
+ NdisReleaseSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ if (l_IRP)
|
|
|
+ {
|
|
|
+ ++n_IRP;
|
|
|
+ CancelIRP (NULL, l_IRP, FALSE);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ while (TRUE)
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ l_PacketBuffer = QueuePop (p_Extension->m_PacketQueue);
|
|
|
+ NdisReleaseSpinLock (&p_Extension->m_QueueLock);
|
|
|
+ if (l_PacketBuffer)
|
|
|
+ {
|
|
|
+ ++n_Packet;
|
|
|
+ MemFree (l_PacketBuffer, TAP_PACKET_SIZE (l_PacketBuffer->m_SizeFlags & TP_SIZE_MASK));
|
|
|
+ }
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ while (TRUE)
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&p_Extension->m_InjectLock);
|
|
|
+ l_InjectBuffer = QueuePop (p_Extension->m_InjectQueue);
|
|
|
+ NdisReleaseSpinLock (&p_Extension->m_InjectLock);
|
|
|
+ if (l_InjectBuffer)
|
|
|
+ {
|
|
|
+ ++n_Inject;
|
|
|
+ INJECT_PACKET_FREE(l_InjectBuffer);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ DEBUGP ((
|
|
|
+ "[%s] [TAP] FlushQueues n_IRP=[%d,%d,%d] n_Packet=[%d,%d,%d] n_Inject=[%d,%d,%d]\n",
|
|
|
+ p_Extension->m_TapName,
|
|
|
+ n_IRP,
|
|
|
+ p_Extension->m_IrpQueue->max_size,
|
|
|
+ IRP_QUEUE_SIZE,
|
|
|
+ n_Packet,
|
|
|
+ p_Extension->m_PacketQueue->max_size,
|
|
|
+ PACKET_QUEUE_SIZE,
|
|
|
+ n_Inject,
|
|
|
+ p_Extension->m_InjectQueue->max_size,
|
|
|
+ INJECT_QUEUE_SIZE
|
|
|
+ ));
|
|
|
+}
|
|
|
+
|
|
|
+//===================================================
|
|
|
+// Tell Windows whether the TAP device should be
|
|
|
+// considered "connected" or "disconnected".
|
|
|
+//===================================================
|
|
|
+VOID
|
|
|
+SetMediaStatus (TapAdapterPointer p_Adapter, BOOLEAN state)
|
|
|
+{
|
|
|
+ if (p_Adapter->m_MediaState != state && !p_Adapter->m_MediaStateAlwaysConnected)
|
|
|
+ {
|
|
|
+ if (state)
|
|
|
+ NdisMIndicateStatus (p_Adapter->m_MiniportAdapterHandle,
|
|
|
+ NDIS_STATUS_MEDIA_CONNECT, NULL, 0);
|
|
|
+ else
|
|
|
+ NdisMIndicateStatus (p_Adapter->m_MiniportAdapterHandle,
|
|
|
+ NDIS_STATUS_MEDIA_DISCONNECT, NULL, 0);
|
|
|
+
|
|
|
+ NdisMIndicateStatusComplete (p_Adapter->m_MiniportAdapterHandle);
|
|
|
+ p_Adapter->m_MediaState = state;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+//======================================================
|
|
|
+// If DHCP mode is used together with tun
|
|
|
+// mode, consider the fact that the P2P remote subnet
|
|
|
+// might enclose the DHCP masq server address.
|
|
|
+//======================================================
|
|
|
+VOID
|
|
|
+CheckIfDhcpAndTunMode (TapAdapterPointer p_Adapter)
|
|
|
+{
|
|
|
+ if (p_Adapter->m_tun && p_Adapter->m_dhcp_enabled)
|
|
|
+ {
|
|
|
+ if ((p_Adapter->m_dhcp_server_ip & p_Adapter->m_remoteNetmask) == p_Adapter->m_remoteNetwork)
|
|
|
+ {
|
|
|
+ COPY_MAC (p_Adapter->m_dhcp_server_mac, p_Adapter->m_TapToUser.dest);
|
|
|
+ p_Adapter->m_dhcp_server_arp = FALSE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+//===================================================
|
|
|
+// Generate an ARP reply message for specific kinds
|
|
|
+// ARP queries.
|
|
|
+//===================================================
|
|
|
+BOOLEAN
|
|
|
+ProcessARP (TapAdapterPointer p_Adapter,
|
|
|
+ const PARP_PACKET src,
|
|
|
+ const IPADDR adapter_ip,
|
|
|
+ const IPADDR ip_network,
|
|
|
+ const IPADDR ip_netmask,
|
|
|
+ const MACADDR mac)
|
|
|
+{
|
|
|
+ //-----------------------------------------------
|
|
|
+ // Is this the kind of packet we are looking for?
|
|
|
+ //-----------------------------------------------
|
|
|
+ if (src->m_Proto == htons (ETH_P_ARP)
|
|
|
+ && MAC_EQUAL (src->m_MAC_Source, p_Adapter->m_MAC)
|
|
|
+ && MAC_EQUAL (src->m_ARP_MAC_Source, p_Adapter->m_MAC)
|
|
|
+ && MAC_EQUAL (src->m_MAC_Destination, p_Adapter->m_MAC_Broadcast)
|
|
|
+ && src->m_ARP_Operation == htons (ARP_REQUEST)
|
|
|
+ && src->m_MAC_AddressType == htons (MAC_ADDR_TYPE)
|
|
|
+ && src->m_MAC_AddressSize == sizeof (MACADDR)
|
|
|
+ && src->m_PROTO_AddressType == htons (ETH_P_IP)
|
|
|
+ && src->m_PROTO_AddressSize == sizeof (IPADDR)
|
|
|
+ && src->m_ARP_IP_Source == adapter_ip
|
|
|
+ && (src->m_ARP_IP_Destination & ip_netmask) == ip_network
|
|
|
+ && src->m_ARP_IP_Destination != adapter_ip)
|
|
|
+ {
|
|
|
+ ARP_PACKET *arp = (ARP_PACKET *) MemAlloc (sizeof (ARP_PACKET), TRUE);
|
|
|
+ if (arp)
|
|
|
+ {
|
|
|
+ //----------------------------------------------
|
|
|
+ // Initialize ARP reply fields
|
|
|
+ //----------------------------------------------
|
|
|
+ arp->m_Proto = htons (ETH_P_ARP);
|
|
|
+ arp->m_MAC_AddressType = htons (MAC_ADDR_TYPE);
|
|
|
+ arp->m_PROTO_AddressType = htons (ETH_P_IP);
|
|
|
+ arp->m_MAC_AddressSize = sizeof (MACADDR);
|
|
|
+ arp->m_PROTO_AddressSize = sizeof (IPADDR);
|
|
|
+ arp->m_ARP_Operation = htons (ARP_REPLY);
|
|
|
+
|
|
|
+ //----------------------------------------------
|
|
|
+ // ARP addresses
|
|
|
+ //----------------------------------------------
|
|
|
+ COPY_MAC (arp->m_MAC_Source, mac);
|
|
|
+ COPY_MAC (arp->m_MAC_Destination, p_Adapter->m_MAC);
|
|
|
+ COPY_MAC (arp->m_ARP_MAC_Source, mac);
|
|
|
+ COPY_MAC (arp->m_ARP_MAC_Destination, p_Adapter->m_MAC);
|
|
|
+ arp->m_ARP_IP_Source = src->m_ARP_IP_Destination;
|
|
|
+ arp->m_ARP_IP_Destination = adapter_ip;
|
|
|
+
|
|
|
+ DUMP_PACKET ("ProcessARP",
|
|
|
+ (unsigned char *) arp,
|
|
|
+ sizeof (ARP_PACKET));
|
|
|
+
|
|
|
+ InjectPacketDeferred (p_Adapter, (UCHAR *) arp, sizeof (ARP_PACKET));
|
|
|
+
|
|
|
+ MemFree (arp, sizeof (ARP_PACKET));
|
|
|
+ }
|
|
|
+
|
|
|
+ return TRUE;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ return FALSE;
|
|
|
+}
|
|
|
+
|
|
|
+//===============================================================
|
|
|
+// Used in cases where internally generated packets such as
|
|
|
+// ARP or DHCP replies must be returned to the kernel, to be
|
|
|
+// seen as an incoming packet "arriving" on the interface.
|
|
|
+//===============================================================
|
|
|
+
|
|
|
+// Defer packet injection till IRQL < DISPATCH_LEVEL
|
|
|
+VOID
|
|
|
+InjectPacketDeferred (TapAdapterPointer p_Adapter,
|
|
|
+ UCHAR *packet,
|
|
|
+ const unsigned int len)
|
|
|
+{
|
|
|
+ InjectPacketPointer l_InjectBuffer;
|
|
|
+ PVOID result;
|
|
|
+
|
|
|
+ if (NdisAllocateMemoryWithTag (&l_InjectBuffer,
|
|
|
+ INJECT_PACKET_SIZE (len),
|
|
|
+ 'IPAT') == NDIS_STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ l_InjectBuffer->m_Size = len;
|
|
|
+ NdisMoveMemory (l_InjectBuffer->m_Data, packet, len);
|
|
|
+ NdisAcquireSpinLock (&p_Adapter->m_Extension.m_InjectLock);
|
|
|
+ result = QueuePush (p_Adapter->m_Extension.m_InjectQueue, l_InjectBuffer);
|
|
|
+ NdisReleaseSpinLock (&p_Adapter->m_Extension.m_InjectLock);
|
|
|
+ if (result)
|
|
|
+ KeInsertQueueDpc (&p_Adapter->m_Extension.m_InjectDpc, p_Adapter, NULL);
|
|
|
+ else
|
|
|
+ INJECT_PACKET_FREE(l_InjectBuffer);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// Handle the injection of previously deferred packets
|
|
|
+VOID
|
|
|
+InjectPacketDpc(KDPC *Dpc,
|
|
|
+ PVOID DeferredContext,
|
|
|
+ PVOID SystemArgument1,
|
|
|
+ PVOID SystemArgument2)
|
|
|
+{
|
|
|
+ InjectPacketPointer l_InjectBuffer;
|
|
|
+ TapAdapterPointer l_Adapter = (TapAdapterPointer)SystemArgument1;
|
|
|
+ while (TRUE)
|
|
|
+ {
|
|
|
+ NdisAcquireSpinLock (&l_Adapter->m_Extension.m_InjectLock);
|
|
|
+ l_InjectBuffer = QueuePop (l_Adapter->m_Extension.m_InjectQueue);
|
|
|
+ NdisReleaseSpinLock (&l_Adapter->m_Extension.m_InjectLock);
|
|
|
+ if (l_InjectBuffer)
|
|
|
+ {
|
|
|
+ InjectPacketNow(l_Adapter, l_InjectBuffer->m_Data, l_InjectBuffer->m_Size);
|
|
|
+ INJECT_PACKET_FREE(l_InjectBuffer);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// Do packet injection now
|
|
|
+VOID
|
|
|
+InjectPacketNow (TapAdapterPointer p_Adapter,
|
|
|
+ UCHAR *packet,
|
|
|
+ const unsigned int len)
|
|
|
+{
|
|
|
+ MYASSERT (len >= ETHERNET_HEADER_SIZE);
|
|
|
+
|
|
|
+ __try
|
|
|
+ {
|
|
|
+ //------------------------------------------------------------
|
|
|
+ // NdisMEthIndicateReceive and NdisMEthIndicateReceiveComplete
|
|
|
+ // could potentially be called reentrantly both here and in
|
|
|
+ // TapDeviceHook/IRP_MJ_WRITE.
|
|
|
+ //
|
|
|
+ // The DDK docs imply that this is okay.
|
|
|
+ //
|
|
|
+ // Note that reentrant behavior could only occur if the
|
|
|
+ // non-deferred version of InjectPacket is used.
|
|
|
+ //------------------------------------------------------------
|
|
|
+ NdisMEthIndicateReceive
|
|
|
+ (p_Adapter->m_MiniportAdapterHandle,
|
|
|
+ (NDIS_HANDLE) p_Adapter,
|
|
|
+ packet,
|
|
|
+ ETHERNET_HEADER_SIZE,
|
|
|
+ packet + ETHERNET_HEADER_SIZE,
|
|
|
+ len - ETHERNET_HEADER_SIZE,
|
|
|
+ len - ETHERNET_HEADER_SIZE);
|
|
|
+
|
|
|
+ NdisMEthIndicateReceiveComplete (p_Adapter->m_MiniportAdapterHandle);
|
|
|
+ }
|
|
|
+ __except (EXCEPTION_EXECUTE_HANDLER)
|
|
|
+ {
|
|
|
+ DEBUGP (("[%s] NdisMEthIndicateReceive failed in InjectPacketNow\n",
|
|
|
+ NAME (p_Adapter)));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+//===================================================================
|
|
|
+// Go back to default TAP mode from Point-To-Point mode.
|
|
|
+// Also reset (i.e. disable) DHCP Masq mode.
|
|
|
+//===================================================================
|
|
|
+VOID ResetTapAdapterState (TapAdapterPointer p_Adapter)
|
|
|
+{
|
|
|
+ // Point-To-Point
|
|
|
+ p_Adapter->m_tun = FALSE;
|
|
|
+ p_Adapter->m_localIP = 0;
|
|
|
+ p_Adapter->m_remoteNetwork = 0;
|
|
|
+ p_Adapter->m_remoteNetmask = 0;
|
|
|
+ NdisZeroMemory (&p_Adapter->m_TapToUser, sizeof (p_Adapter->m_TapToUser));
|
|
|
+ NdisZeroMemory (&p_Adapter->m_UserToTap, sizeof (p_Adapter->m_UserToTap));
|
|
|
+ NdisZeroMemory (&p_Adapter->m_UserToTap_IPv6, sizeof (p_Adapter->m_UserToTap_IPv6));
|
|
|
+
|
|
|
+ // DHCP Masq
|
|
|
+ p_Adapter->m_dhcp_enabled = FALSE;
|
|
|
+ p_Adapter->m_dhcp_server_arp = FALSE;
|
|
|
+ p_Adapter->m_dhcp_user_supplied_options_buffer_len = 0;
|
|
|
+ p_Adapter->m_dhcp_addr = 0;
|
|
|
+ p_Adapter->m_dhcp_netmask = 0;
|
|
|
+ p_Adapter->m_dhcp_server_ip = 0;
|
|
|
+ p_Adapter->m_dhcp_lease_time = 0;
|
|
|
+ p_Adapter->m_dhcp_received_discover = FALSE;
|
|
|
+ p_Adapter->m_dhcp_bad_requests = 0;
|
|
|
+ NdisZeroMemory (p_Adapter->m_dhcp_server_mac, sizeof (MACADDR));
|
|
|
+}
|
|
|
+
|
|
|
+#if ENABLE_NONADMIN
|
|
|
+
|
|
|
+//===================================================================
|
|
|
+// Set TAP device handle to be accessible without admin privileges.
|
|
|
+//===================================================================
|
|
|
+VOID AllowNonAdmin (TapExtensionPointer p_Extension)
|
|
|
+{
|
|
|
+ NTSTATUS stat;
|
|
|
+ SECURITY_DESCRIPTOR sd;
|
|
|
+ OBJECT_ATTRIBUTES oa;
|
|
|
+ IO_STATUS_BLOCK isb;
|
|
|
+ HANDLE hand = NULL;
|
|
|
+
|
|
|
+ NdisZeroMemory (&sd, sizeof (sd));
|
|
|
+ NdisZeroMemory (&oa, sizeof (oa));
|
|
|
+ NdisZeroMemory (&isb, sizeof (isb));
|
|
|
+
|
|
|
+ if (!p_Extension->m_CreatedUnicodeLinkName)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: UnicodeLinkName is uninitialized\n"));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ stat = RtlCreateSecurityDescriptor (&sd, SECURITY_DESCRIPTOR_REVISION);
|
|
|
+ if (stat != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: RtlCreateSecurityDescriptor failed\n"));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ InitializeObjectAttributes (
|
|
|
+ &oa,
|
|
|
+ &p_Extension->m_UnicodeLinkName,
|
|
|
+ OBJ_KERNEL_HANDLE,
|
|
|
+ NULL,
|
|
|
+ NULL
|
|
|
+ );
|
|
|
+
|
|
|
+ stat = ZwOpenFile (
|
|
|
+ &hand,
|
|
|
+ WRITE_DAC,
|
|
|
+ &oa,
|
|
|
+ &isb,
|
|
|
+ 0,
|
|
|
+ 0
|
|
|
+ );
|
|
|
+ if (stat != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: ZwOpenFile failed, status=0x%08x\n", (unsigned int)stat));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ stat = ZwSetSecurityObject (hand, DACL_SECURITY_INFORMATION, &sd);
|
|
|
+ if (stat != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: ZwSetSecurityObject failed\n"));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ stat = ZwClose (hand);
|
|
|
+ if (stat != STATUS_SUCCESS)
|
|
|
+ {
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: ZwClose failed\n"));
|
|
|
+ NOTE_ERROR ();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ DEBUGP (("[TAP] AllowNonAdmin: SUCCEEDED\n"));
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
|
|
+#if PACKET_TRUNCATION_CHECK
|
|
|
+
|
|
|
+VOID
|
|
|
+IPv4PacketSizeVerify (const UCHAR *data, ULONG length, BOOLEAN tun, const char *prefix, LONG *counter)
|
|
|
+{
|
|
|
+ const IPHDR *ip;
|
|
|
+ int len = length;
|
|
|
+
|
|
|
+ if (tun)
|
|
|
+ {
|
|
|
+ ip = (IPHDR *) data;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ if (length >= sizeof (ETH_HEADER))
|
|
|
+ {
|
|
|
+ const ETH_HEADER *eth = (ETH_HEADER *) data;
|
|
|
+
|
|
|
+ if (eth->proto != htons (ETH_P_IP))
|
|
|
+ return;
|
|
|
+
|
|
|
+ ip = (IPHDR *) (data + sizeof (ETH_HEADER));
|
|
|
+ len -= sizeof (ETH_HEADER);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (len >= sizeof (IPHDR))
|
|
|
+ {
|
|
|
+ const int totlen = ntohs (ip->tot_len);
|
|
|
+
|
|
|
+ DEBUGP (("[TAP] IPv4PacketSizeVerify %s len=%d totlen=%d\n", prefix, len, totlen));
|
|
|
+
|
|
|
+ if (len != totlen)
|
|
|
+ ++(*counter);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
|
|
+//======================================================================
|
|
|
+// End of Source
|
|
|
+//======================================================================
|
Adam Ierymenko