From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-002e3701.pphosted.com (mx0a-002e3701.pphosted.com [148.163.147.86]) by mx.groups.io with SMTP id smtpd.web10.2501.1586402543182814088 for ; Wed, 08 Apr 2020 20:22:23 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: hpe.com, ip: 148.163.147.86, mailfrom: prvs=036863830d=nickle.wang@hpe.com) Received: from pps.filterd (m0150241.ppops.net [127.0.0.1]) by mx0a-002e3701.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0393I1mf019634; Thu, 9 Apr 2020 03:22:22 GMT Received: from g4t3427.houston.hpe.com (g4t3427.houston.hpe.com [15.241.140.73]) by mx0a-002e3701.pphosted.com with ESMTP id 3091q0tphm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 09 Apr 2020 03:22:22 +0000 Received: from g4t3433.houston.hpecorp.net (g4t3433.houston.hpecorp.net [16.208.49.245]) by g4t3427.houston.hpe.com (Postfix) with ESMTP id DD44A5C; Thu, 9 Apr 2020 03:22:21 +0000 (UTC) Received: from WANGNICK4.asiapacific.hpqcorp.net (wangnick4.asiapacific.hpqcorp.net [10.43.41.3]) by g4t3433.houston.hpecorp.net (Postfix) with ESMTP id AB9014A; Thu, 9 Apr 2020 03:22:20 +0000 (UTC) From: "Nickle Wang" To: devel@edk2.groups.io, nickle.wang@hpe.com Cc: ray.ni@intel.com, Derek Lin Subject: [PATCH v2] EmulatorPkg/WinHost: Enable network support. Date: Thu, 9 Apr 2020 11:20:39 +0800 Message-Id: <20200409032038.9500-1-nickle.wang@hpe.com> X-Mailer: git-send-email 2.20.1.windows.1 MIME-Version: 1.0 X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-04-08_09:2020-04-07,2020-04-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 spamscore=0 clxscore=1015 phishscore=0 malwarescore=0 suspectscore=2 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004090022 Content-Transfer-Encoding: 8bit Follow the implementation from Unix host to implement SNP EMU_IO_THUNK_PROTOCOL and EMU_SNP_PROTOCOL. The network IO driver is the same one as Nt32. Please refer to NETWORK-IO Subproject for network Io driver(SnpNt32Io.dll). Signed-off-by: Nickle Wang Signed-off-by: Derek Lin --- EmulatorPkg/EmulatorPkg.dec | 8 + EmulatorPkg/Win/Host/WinHost.c | 3 +- EmulatorPkg/Win/Host/WinHost.h | 5 + EmulatorPkg/Win/Host/WinHost.inf | 5 + EmulatorPkg/Win/Host/WinPacketFilter.c | 1135 ++++++++++++++++++++++++ 5 files changed, 1155 insertions(+), 1 deletion(-) create mode 100644 EmulatorPkg/Win/Host/WinPacketFilter.c diff --git a/EmulatorPkg/EmulatorPkg.dec b/EmulatorPkg/EmulatorPkg.dec index 99250d9fe5..2a09744ea1 100644 --- a/EmulatorPkg/EmulatorPkg.dec +++ b/EmulatorPkg/EmulatorPkg.dec @@ -4,6 +4,7 @@ # # Copyright (c) 2008 - 2019, Intel Corporation. All rights reserved.
# Portions copyright (c) 2011, Apple Inc. All rights reserved. +# (C) Copyright 2020 Hewlett Packard Enterprise Development LP
# # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -94,6 +95,13 @@ gEmulatorPkgTokenSpaceGuid.PcdEmuGop|L"GOP Window"|VOID*|0x00001018 gEmulatorPkgTokenSpaceGuid.PcdEmuFileSystem|L"."|VOID*|0x00001004 gEmulatorPkgTokenSpaceGuid.PcdEmuSerialPort|L"/dev/ttyS0"|VOID*|0x00001002 + + # + # On Unix host, this is the network interface name on host system that will + # be used in UEFI. + # On Win host, this is the network interface index number on Windows that + # will be used in UEFI. For example, string L"0" is the first network + # interface. gEmulatorPkgTokenSpaceGuid.PcdEmuNetworkInterface|L"en0"|VOID*|0x0000100d gEmulatorPkgTokenSpaceGuid.PcdEmuCpuModel|L"Intel(R) Processor Model"|VOID*|0x00001007 diff --git a/EmulatorPkg/Win/Host/WinHost.c b/EmulatorPkg/Win/Host/WinHost.c index cfee156b27..0838c56dde 100644 --- a/EmulatorPkg/Win/Host/WinHost.c +++ b/EmulatorPkg/Win/Host/WinHost.c @@ -9,7 +9,7 @@ allocate memory space with ReadWrite and Execute attribute. Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
-(C) Copyright 2016 Hewlett Packard Enterprise Development LP
+(C) Copyright 2016-2020 Hewlett Packard Enterprise Development LP
SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -443,6 +443,7 @@ Returns: AddThunkProtocol (&mWinNtWndThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuGop), TRUE); AddThunkProtocol (&mWinNtFileSystemThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuFileSystem), TRUE); AddThunkProtocol (&mWinNtBlockIoThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuVirtualDisk), TRUE); + AddThunkProtocol (&mWinNtSnpThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuNetworkInterface), TRUE); // // Allocate space for gSystemMemory Array diff --git a/EmulatorPkg/Win/Host/WinHost.h b/EmulatorPkg/Win/Host/WinHost.h index 0e52c003fc..b36fea254e 100644 --- a/EmulatorPkg/Win/Host/WinHost.h +++ b/EmulatorPkg/Win/Host/WinHost.h @@ -1,6 +1,7 @@ /**@file Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+(C) Copyright 2020 Hewlett Packard Enterprise Development LP
SPDX-License-Identifier: BSD-2-Clause-Patent @@ -29,6 +30,7 @@ Abstract: #include #include +#include #include #include @@ -41,6 +43,7 @@ Abstract: #include #include #include +#include #define TEMPORARY_RAM_SIZE 0x20000 @@ -200,4 +203,6 @@ extern EMU_THUNK_PROTOCOL gEmuThunkProtocol; extern EMU_IO_THUNK_PROTOCOL mWinNtWndThunkIo; extern EMU_IO_THUNK_PROTOCOL mWinNtFileSystemThunkIo; extern EMU_IO_THUNK_PROTOCOL mWinNtBlockIoThunkIo; +extern EMU_IO_THUNK_PROTOCOL mWinNtSnpThunkIo; + #endif diff --git a/EmulatorPkg/Win/Host/WinHost.inf b/EmulatorPkg/Win/Host/WinHost.inf index e0b3ecb15b..a283a9a6fc 100644 --- a/EmulatorPkg/Win/Host/WinHost.inf +++ b/EmulatorPkg/Win/Host/WinHost.inf @@ -4,6 +4,7 @@ # Main executable file of Win Emulator that loads Sec core after initialization finished. # Copyright (c) 2008 - 2019, Intel Corporation. All rights reserved.
# Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.
+# (C) Copyright 2020 Hewlett Packard Enterprise Development LP
# # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -33,11 +34,13 @@ WinThunk.c WinHost.h WinHost.c + WinPacketFilter.c WinInclude.h [Packages] MdePkg/MdePkg.dec MdeModulePkg/MdeModulePkg.dec + NetworkPkg/NetworkPkg.dec EmulatorPkg/EmulatorPkg.dec [LibraryClasses] @@ -61,6 +64,7 @@ gEmuGraphicsWindowProtocolGuid gEmuBlockIoProtocolGuid gEfiSimpleFileSystemProtocolGuid + gEmuSnpProtocolGuid [Guids] gEfiFileSystemVolumeLabelInfoIdGuid # SOMETIMES_CONSUMED @@ -78,6 +82,7 @@ gEmulatorPkgTokenSpaceGuid.PcdEmuGop|L"GOP Window" gEmulatorPkgTokenSpaceGuid.PcdEmuFileSystem gEmulatorPkgTokenSpaceGuid.PcdPeiServicesTablePage + gEmulatorPkgTokenSpaceGuid.PcdEmuNetworkInterface|L"0" [BuildOptions] MSFT:*_*_*_DLINK_FLAGS == /out:"$(BIN_DIR)\$(BASE_NAME).exe" /base:0x10000000 /pdb:"$(BIN_DIR)\$(BASE_NAME).pdb" diff --git a/EmulatorPkg/Win/Host/WinPacketFilter.c b/EmulatorPkg/Win/Host/WinPacketFilter.c new file mode 100644 index 0000000000..0b751f97e3 --- /dev/null +++ b/EmulatorPkg/Win/Host/WinPacketFilter.c @@ -0,0 +1,1135 @@ +/**@file + Windows Packet Filter implementation of the EMU_SNP_PROTOCOL that allows the + emulator to get on real networks. + +Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.
+Portions copyright (c) 2011, Apple Inc. All rights reserved. +(C) Copyright 2020 Hewlett Packard Enterprise Development LP
+ +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ +#include "WinHost.h" + +#define NETWORK_LIBRARY_NAME_U L"SnpNt32Io.dll" +#define NETWORK_LIBRARY_INITIALIZE "SnpInitialize" +#define NETWORK_LIBRARY_FINALIZE "SnpFinalize" +#define NETWORK_LIBRARY_SET_RCV_FILTER "SnpSetReceiveFilter" +#define NETWORK_LIBRARY_RECEIVE "SnpReceive" +#define NETWORK_LIBRARY_TRANSMIT "SnpTransmit" + +#pragma pack(1) +typedef struct _NT_NET_INTERFACE_INFO { + UINT32 InterfaceIndex; + EFI_MAC_ADDRESS MacAddr; +} NT_NET_INTERFACE_INFO; +#pragma pack() + +#define NET_ETHER_HEADER_SIZE 14 +#define MAX_INTERFACE_INFO_NUMBER 16 +#define SNP_MAX_TX_BUFFER_NUM 65536 +#define SNP_TX_BUFFER_INCREASEMENT 32 +#define DEFAULT_SELECTED_NIC_INDEX 0 + +// +// Functions in Net Library +// +typedef +INT32 +(*NT_NET_INITIALIZE) ( + IN OUT UINT32 *InterfaceCount, + IN OUT NT_NET_INTERFACE_INFO * InterfaceInfoBuffer + ); + +typedef +INT32 +(*NT_NET_FINALIZE) ( + VOID + ); + +typedef +INT32 +(*NT_NET_SET_RECEIVE_FILTER) ( + IN UINT32 Index, + IN UINT32 EnableFilter, + IN UINT32 MCastFilterCnt, + IN EFI_MAC_ADDRESS * MCastFilter + ); + +typedef +INT32 +(*NT_NET_RECEIVE) ( + IN UINT32 Index, + IN OUT UINT32 *BufferSize, + OUT VOID *Buffer + ); + +typedef +INT32 +(*NT_NET_TRANSMIT) ( + IN UINT32 Index, + IN UINT32 HeaderSize, + IN UINT32 BufferSize, + IN VOID *Buffer, + IN EFI_MAC_ADDRESS * SrcAddr, + IN EFI_MAC_ADDRESS * DestAddr, + IN UINT16 *Protocol + ); + +typedef struct _NT_NET_UTILITY_TABLE { + NT_NET_INITIALIZE Initialize; + NT_NET_FINALIZE Finalize; + NT_NET_SET_RECEIVE_FILTER SetReceiveFilter; + NT_NET_RECEIVE Receive; + NT_NET_TRANSMIT Transmit; +} NT_NET_UTILITY_TABLE; + +// +// Instance data for each fake SNP instance +// +#define WIN_NT_INSTANCE_SIGNATURE SIGNATURE_32 ('N', 'T', 'I', 'S') + +typedef struct { + UINT32 Signature; + + // + // Array of the recycled transmit buffer address. + // + UINT64 *RecycledTxBuf; + + // + // Current number of recycled buffer pointers in RecycledTxBuf. + // + UINT32 RecycledTxBufCount; + + // + // The maximum number of recycled buffer pointers in RecycledTxBuf. + // + UINT32 MaxRecycledTxBuf; + EFI_SIMPLE_NETWORK_MODE Mode; + NT_NET_INTERFACE_INFO InterfaceInfo; +} WIN_NT_INSTANCE_DATA; + +// +// Instance data for each SNP private instance +// +#define WIN_NT_SIMPLE_NETWORK_PRIVATE_SIGNATURE SIGNATURE_32 ('N', 'T', 's', 'n') + +typedef struct { + UINTN Signature; + EMU_IO_THUNK_PROTOCOL *Thunk; + EMU_SNP_PROTOCOL EmuSnp; + EFI_SIMPLE_NETWORK_MODE *Mode; + HMODULE NetworkLibraryHandle; + NT_NET_UTILITY_TABLE NtNetUtilityTable; + WIN_NT_INSTANCE_DATA Instance; +} WIN_NT_SNP_PRIVATE; + +#define WIN_NT_SNP_PRIVATE_DATA_FROM_THIS(a) \ + CR(a, WIN_NT_SNP_PRIVATE, EmuSnp, WIN_NT_SIMPLE_NETWORK_PRIVATE_SIGNATURE) + + +/** + Register storage for SNP Mode. + + @param This Protocol instance pointer. + @param Mode SimpleNetworkProtocol Mode structure passed into driver. + + @retval EFI_SUCCESS The network interface was started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + +**/ +EFI_STATUS +WinNtSnpCreateMapping ( + IN EMU_SNP_PROTOCOL *This, + IN EFI_SIMPLE_NETWORK_MODE *Mode + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + Private->Mode = Mode; + + // + // Set the broadcast address. + // + CopyMem (&Mode->BroadcastAddress, &Private->Instance.Mode.BroadcastAddress, sizeof (EFI_MAC_ADDRESS)); + // + // Set the MAC address. + // + CopyMem (&Mode->CurrentAddress, &Private->Instance.Mode.CurrentAddress, sizeof (EFI_MAC_ADDRESS)); + CopyMem (&Mode->PermanentAddress, &Private->Instance.Mode.PermanentAddress, sizeof (EFI_MAC_ADDRESS)); + + return EFI_SUCCESS; +} + +/** + Changes the state of a network interface from "stopped" to "started". + + @param This Protocol instance pointer. + + @retval EFI_SUCCESS The network interface was started. + @retval EFI_ALREADY_STARTED The network interface is already in the started state. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpStart ( + IN EMU_SNP_PROTOCOL *This + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + switch (Private->Mode->State) { + case EfiSimpleNetworkStopped: + break; + + case EfiSimpleNetworkStarted: + case EfiSimpleNetworkInitialized: + return EFI_ALREADY_STARTED; + break; + + default: + return EFI_DEVICE_ERROR; + break; + } + + Private->Mode->State = EfiSimpleNetworkStarted; + + return EFI_SUCCESS; +} + +/** + Changes the state of a network interface from "started" to "stopped". + + @param This Protocol instance pointer. + + @retval EFI_SUCCESS The network interface was stopped. + @retval EFI_ALREADY_STARTED The network interface is already in the stopped state. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpStop ( + IN EMU_SNP_PROTOCOL *This + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + switch ( Private->Mode->State ) { + case EfiSimpleNetworkStarted: + break; + + case EfiSimpleNetworkStopped: + return EFI_NOT_STARTED; + break; + + default: + return EFI_DEVICE_ERROR; + break; + } + + Private->Mode->State = EfiSimpleNetworkStopped; + + return EFI_SUCCESS; +} + +/** + Resets a network adapter and allocates the transmit and receive buffers + required by the network interface; optionally, also requests allocation + of additional transmit and receive buffers. + + @param This The protocol instance pointer. + @param ExtraRxBufferSize The size, in bytes, of the extra receive buffer space + that the driver should allocate for the network interface. + Some network interfaces will not be able to use the extra + buffer, and the caller will not know if it is actually + being used. + @param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer space + that the driver should allocate for the network interface. + Some network interfaces will not be able to use the extra + buffer, and the caller will not know if it is actually + being used. + + @retval EFI_SUCCESS The network interface was initialized. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit and + receive buffers. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpInitialize ( + IN EMU_SNP_PROTOCOL *This, + IN UINTN ExtraRxBufferSize OPTIONAL, + IN UINTN ExtraTxBufferSize OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + switch ( Private->Mode->State ) { + case EfiSimpleNetworkStarted: + break; + + case EfiSimpleNetworkStopped: + return EFI_NOT_STARTED; + break; + + default: + return EFI_DEVICE_ERROR; + break; + } + + Private->Mode->MCastFilterCount = 0; + Private->Mode->ReceiveFilterSetting = 0; + ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter)); + + Private->Mode->State = EfiSimpleNetworkInitialized; + + return EFI_SUCCESS; +} + +/** + Resets a network adapter and re-initializes it with the parameters that were + provided in the previous call to Initialize(). + + @param This The protocol instance pointer. + @param ExtendedVerification Indicates that the driver may perform a more + exhaustive verification operation of the device + during reset. + + @retval EFI_SUCCESS The network interface was reset. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpReset ( + IN EMU_SNP_PROTOCOL *This, + IN BOOLEAN ExtendedVerification + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + switch ( Private->Mode->State ) { + case EfiSimpleNetworkInitialized: + break; + + case EfiSimpleNetworkStopped: + return EFI_NOT_STARTED; + break; + + default: + return EFI_DEVICE_ERROR; + break; + } + + return EFI_SUCCESS; +} + +/** + Resets a network adapter and leaves it in a state that is safe for + another driver to initialize. + + @param This Protocol instance pointer. + + @retval EFI_SUCCESS The network interface was shutdown. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpShutdown ( + IN EMU_SNP_PROTOCOL *This + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + switch ( Private->Mode->State ) { + case EfiSimpleNetworkInitialized: + break; + + case EfiSimpleNetworkStopped: + return EFI_NOT_STARTED; + break; + + default: + return EFI_DEVICE_ERROR; + break; + } + + Private->Mode->State = EfiSimpleNetworkStarted; + + Private->Mode->ReceiveFilterSetting = 0; + Private->Mode->MCastFilterCount = 0; + ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter)); + + return EFI_SUCCESS; +} + +/** + Manages the multicast receive filters of a network interface. + + @param This The protocol instance pointer. + @param Enable A bit mask of receive filters to enable on the network interface. + @param Disable A bit mask of receive filters to disable on the network interface. + @param ResetMCastFilter Set to TRUE to reset the contents of the multicast receive + filters on the network interface to their default values. + @param McastFilterCnt Number of multicast HW MAC addresses in the new + MCastFilter list. This value must be less than or equal to + the MCastFilterCnt field of EMU_SNP_MODE. This + field is optional if ResetMCastFilter is TRUE. + @param MCastFilter A pointer to a list of new multicast receive filter HW MAC + addresses. This list will replace any existing multicast + HW MAC address list. This field is optional if + ResetMCastFilter is TRUE. + + @retval EFI_SUCCESS The multicast receive filter list was updated. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpReceiveFilters ( + IN EMU_SNP_PROTOCOL *This, + IN UINT32 Enable, + IN UINT32 Disable, + IN BOOLEAN ResetMCastFilter, + IN UINTN MCastFilterCnt OPTIONAL, + IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + INT32 ReturnValue; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + ReturnValue = Private->NtNetUtilityTable.SetReceiveFilter ( + Private->Instance.InterfaceInfo.InterfaceIndex, + Enable, + (UINT32)MCastFilterCnt, + MCastFilter + ); + + if (ReturnValue <= 0) { + return EFI_DEVICE_ERROR; + } + + return EFI_SUCCESS; +} + +/** + Modifies or resets the current station address, if supported. + + @param This The protocol instance pointer. + @param Reset Flag used to reset the station address to the network interfaces + permanent address. + @param New The new station address to be used for the network interface. + + @retval EFI_SUCCESS The network interfaces station address was updated. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpStationAddress ( + IN EMU_SNP_PROTOCOL *This, + IN BOOLEAN Reset, + IN EFI_MAC_ADDRESS *New OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + return EFI_UNSUPPORTED; +} + +/** + Resets or collects the statistics on a network interface. + + @param This Protocol instance pointer. + @param Reset Set to TRUE to reset the statistics for the network interface. + @param StatisticsSize On input the size, in bytes, of StatisticsTable. On + output the size, in bytes, of the resulting table of + statistics. + @param StatisticsTable A pointer to the EFI_NETWORK_STATISTICS structure that + contains the statistics. + + @retval EFI_SUCCESS The statistics were collected from the network interface. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer + size needed to hold the statistics is returned in + StatisticsSize. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpStatistics ( + IN EMU_SNP_PROTOCOL *This, + IN BOOLEAN Reset, + IN OUT UINTN *StatisticsSize OPTIONAL, + OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + return EFI_UNSUPPORTED; +} + +/** + Converts a multicast IP address to a multicast HW MAC address. + + @param This The protocol instance pointer. + @param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460]. Set + to FALSE if the multicast IP address is IPv4 [RFC 791]. + @param IP The multicast IP address that is to be converted to a multicast + HW MAC address. + @param MAC The multicast HW MAC address that is to be generated from IP. + + @retval EFI_SUCCESS The multicast IP address was mapped to the multicast + HW MAC address. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer + size needed to hold the statistics is returned in + StatisticsSize. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpMCastIpToMac ( + IN EMU_SNP_PROTOCOL *This, + IN BOOLEAN IPv6, + IN EFI_IP_ADDRESS *IP, + OUT EFI_MAC_ADDRESS *MAC + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + return EFI_UNSUPPORTED; +} + +/** + Performs read and write operations on the NVRAM device attached to a + network interface. + + @param This The protocol instance pointer. + @param ReadWrite TRUE for read operations, FALSE for write operations. + @param Offset Byte offset in the NVRAM device at which to start the read or + write operation. This must be a multiple of NvRamAccessSize and + less than NvRamSize. + @param BufferSize The number of bytes to read or write from the NVRAM device. + This must also be a multiple of NvramAccessSize. + @param Buffer A pointer to the data buffer. + + @retval EFI_SUCCESS The NVRAM access was performed. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpNvData ( + IN EMU_SNP_PROTOCOL *This, + IN BOOLEAN ReadWrite, + IN UINTN Offset, + IN UINTN BufferSize, + IN OUT VOID *Buffer + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + return EFI_UNSUPPORTED; +} + +/** + Reads the current interrupt status and recycled transmit buffer status from + a network interface. + + @param This The protocol instance pointer. + @param InterruptStatus A pointer to the bit mask of the currently active interrupts + If this is NULL, the interrupt status will not be read from + the device. If this is not NULL, the interrupt status will + be read from the device. When the interrupt status is read, + it will also be cleared. Clearing the transmit interrupt + does not empty the recycled transmit buffer array. + @param TxBuf Recycled transmit buffer address. The network interface will + not transmit if its internal recycled transmit buffer array + is full. Reading the transmit buffer does not clear the + transmit interrupt. If this is NULL, then the transmit buffer + status will not be read. If there are no transmit buffers to + recycle and TxBuf is not NULL, * TxBuf will be set to NULL. + + @retval EFI_SUCCESS The status of the network interface was retrieved. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpGetStatus ( + IN EMU_SNP_PROTOCOL *This, + OUT UINT32 *InterruptStatus OPTIONAL, + OUT VOID **TxBuf OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + if (TxBuf != NULL) { + if (Private->Instance.RecycledTxBufCount != 0) { + Private->Instance.RecycledTxBufCount --; + *((UINT8 **) TxBuf) = (UINT8 *) (UINTN)Private->Instance.RecycledTxBuf[Private->Instance.RecycledTxBufCount]; + } else { + *((UINT8 **) TxBuf) = NULL; + } + } + + if (InterruptStatus != NULL) { + *InterruptStatus = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; + } + + return EFI_SUCCESS; +} + +/** + Places a packet in the transmit queue of a network interface. + + @param This The protocol instance pointer. + @param HeaderSize The size, in bytes, of the media header to be filled in by + the Transmit() function. If HeaderSize is non-zero, then it + must be equal to This->Mode->MediaHeaderSize and the DestAddr + and Protocol parameters must not be NULL. + @param BufferSize The size, in bytes, of the entire packet (media header and + data) to be transmitted through the network interface. + @param Buffer A pointer to the packet (media header followed by data) to be + transmitted. This parameter cannot be NULL. If HeaderSize is zero, + then the media header in Buffer must already be filled in by the + caller. If HeaderSize is non-zero, then the media header will be + filled in by the Transmit() function. + @param SrcAddr The source HW MAC address. If HeaderSize is zero, then this parameter + is ignored. If HeaderSize is non-zero and SrcAddr is NULL, then + This->Mode->CurrentAddress is used for the source HW MAC address. + @param DestAddr The destination HW MAC address. If HeaderSize is zero, then this + parameter is ignored. + @param Protocol The type of header to build. If HeaderSize is zero, then this + parameter is ignored. See RFC 1700, section "Ether Types", for + examples. + + @retval EFI_SUCCESS The packet was placed on the transmit queue. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_NOT_READY The network interface is too busy to accept this transmit request. + @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpTransmit ( + IN EMU_SNP_PROTOCOL *This, + IN UINTN HeaderSize, + IN UINTN BufferSize, + IN VOID *Buffer, + IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL, + IN EFI_MAC_ADDRESS *DestAddr OPTIONAL, + IN UINT16 *Protocol OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + INT32 ReturnValue; + UINT64 *Tmp; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + if ((HeaderSize != 0) && (SrcAddr == NULL)) { + SrcAddr = &Private->Instance.Mode.CurrentAddress; + } + + ReturnValue = Private->NtNetUtilityTable.Transmit ( + Private->Instance.InterfaceInfo.InterfaceIndex, + (UINT32)HeaderSize, + (UINT32)BufferSize, + Buffer, + SrcAddr, + DestAddr, + Protocol + ); + + if (ReturnValue < 0) { + return EFI_DEVICE_ERROR; + } else { + if ((Private->Instance.MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT) >= SNP_MAX_TX_BUFFER_NUM) { + return EFI_NOT_READY; + } + + if (Private->Instance.RecycledTxBufCount < Private->Instance.MaxRecycledTxBuf) { + Private->Instance.RecycledTxBuf[Private->Instance.RecycledTxBufCount] = (UINT64) Buffer; + Private->Instance.RecycledTxBufCount ++; + } else { + Tmp = malloc (sizeof (UINT64) * (Private->Instance.MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT)); + if (Tmp == NULL) { + return EFI_DEVICE_ERROR; + } + CopyMem (Tmp, Private->Instance.RecycledTxBuf, sizeof (UINT64) * Private->Instance.RecycledTxBufCount); + free (Private->Instance.RecycledTxBuf); + Private->Instance.RecycledTxBuf = Tmp; + Private->Instance.MaxRecycledTxBuf += SNP_TX_BUFFER_INCREASEMENT; + } + } + + return EFI_SUCCESS; +} + +/** + Receives a packet from a network interface. + + @param This The protocol instance pointer. + @param HeaderSize The size, in bytes, of the media header received on the network + interface. If this parameter is NULL, then the media header size + will not be returned. + @param BufferSize On entry, the size, in bytes, of Buffer. On exit, the size, in + bytes, of the packet that was received on the network interface. + @param Buffer A pointer to the data buffer to receive both the media header and + the data. + @param SrcAddr The source HW MAC address. If this parameter is NULL, the + HW MAC source address will not be extracted from the media + header. + @param DestAddr The destination HW MAC address. If this parameter is NULL, + the HW MAC destination address will not be extracted from the + media header. + @param Protocol The media header type. If this parameter is NULL, then the + protocol will not be extracted from the media header. See + RFC 1700 section "Ether Types" for examples. + + @retval EFI_SUCCESS The received data was stored in Buffer, and BufferSize has + been updated to the number of bytes received. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_NOT_READY The network interface is too busy to accept this transmit + request. + @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. + @retval EFI_UNSUPPORTED This function is not supported by the network interface. + +**/ +EFI_STATUS +WinNtSnpReceive ( + IN EMU_SNP_PROTOCOL *This, + OUT UINTN *HeaderSize OPTIONAL, + IN OUT UINTN *BufferSize, + OUT VOID *Buffer, + OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL, + OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL, + OUT UINT16 *Protocol OPTIONAL + ) +{ + WIN_NT_SNP_PRIVATE *Private; + INT32 ReturnValue; + UINTN BufSize; + + Private = WIN_NT_SNP_PRIVATE_DATA_FROM_THIS (This); + + BufSize = *BufferSize; + + ASSERT (Private->NtNetUtilityTable.Receive != NULL); + + ReturnValue = Private->NtNetUtilityTable.Receive ( + Private->Instance.InterfaceInfo.InterfaceIndex, + BufferSize, + Buffer + ); + + if (ReturnValue < 0) { + if (ReturnValue == -100) { + return EFI_BUFFER_TOO_SMALL; + } + + return EFI_DEVICE_ERROR; + } else if (ReturnValue == 0) { + return EFI_NOT_READY; + } + + if (HeaderSize != NULL) { + *HeaderSize = 14; + } + + if (SrcAddr != NULL) { + ZeroMem (SrcAddr, sizeof (EFI_MAC_ADDRESS)); + CopyMem (SrcAddr, ((UINT8 *) Buffer) + 6, 6); + } + + if (DestAddr != NULL) { + ZeroMem (DestAddr, sizeof (EFI_MAC_ADDRESS)); + CopyMem (DestAddr, ((UINT8 *) Buffer), 6); + } + + if (Protocol != NULL) { + *Protocol = NTOHS (*((UINT16 *) (((UINT8 *) Buffer) + 12))); + } + + return (*BufferSize <= BufSize) ? EFI_SUCCESS : EFI_BUFFER_TOO_SMALL; +} + +/** + Initialize the snpnt32 driver instance. + + @param Instance Pointer to the instance context data. + @param NetInfo Pointer to the interface info. + + @retval EFI_SUCCESS The driver instance is initialized. + @retval other Initialization errors. + +**/ +EFI_STATUS +WinNtInitializeInstanceData ( + IN OUT WIN_NT_INSTANCE_DATA *Instance, + IN NT_NET_INTERFACE_INFO *NetInfo + ) +{ + if (Instance == NULL || NetInfo == NULL) { + return EFI_INVALID_PARAMETER; + } + + ZeroMem (Instance, sizeof (WIN_NT_INSTANCE_DATA)); + + Instance->Signature = WIN_NT_INSTANCE_SIGNATURE; + Instance->RecycledTxBufCount = 0; + Instance->MaxRecycledTxBuf = 32; + Instance->Mode.State = EfiSimpleNetworkInitialized; + Instance->Mode.HwAddressSize = NET_ETHER_ADDR_LEN; + Instance->Mode.MediaHeaderSize = NET_ETHER_HEADER_SIZE; + Instance->Mode.MaxPacketSize = 1500; + Instance->Mode.MaxMCastFilterCount = MAX_MCAST_FILTER_CNT; + Instance->Mode.IfType = NET_IFTYPE_ETHERNET; + Instance->Mode.MediaPresentSupported = TRUE; + Instance->Mode.MediaPresent = TRUE; + + // + // Allocate the RecycledTxBuf. + // + Instance->RecycledTxBuf = malloc (sizeof (UINT64) * Instance->MaxRecycledTxBuf); + if (Instance->RecycledTxBuf == NULL) { + return EFI_OUT_OF_RESOURCES; + } + + // + // Set the interface information. + // + CopyMem (&Instance->InterfaceInfo, NetInfo, sizeof (Instance->InterfaceInfo)); + + + // + // Set broadcast address + // + SetMem (&Instance->Mode.BroadcastAddress, sizeof (EFI_MAC_ADDRESS), 0xFF); + + // + // Copy Current/PermanentAddress MAC address + // + CopyMem (&Instance->Mode.CurrentAddress, &Instance->InterfaceInfo.MacAddr, sizeof(Instance->Mode.CurrentAddress)); + CopyMem (&Instance->Mode.PermanentAddress, &Instance->InterfaceInfo.MacAddr, sizeof(Instance->Mode.PermanentAddress)); + + // + // Since the fake SNP is based on a real NIC, to avoid conflict with the host + // NIC network stack, we use a different MAC address. + // So just change the last byte of the MAC address for the real NIC. + // + Instance->Mode.CurrentAddress.Addr[NET_ETHER_ADDR_LEN - 1]++; + + return EFI_SUCCESS; +} + +/** + Initialize the net utility data. + + @param This Pointer to the private data. + @param ActiveInstance The active network interface. + + @retval EFI_SUCCESS The global data is initialized. + @retval EFI_NOT_FOUND The required DLL is not found. + @retval EFI_DEVICE_ERROR Error initialize network utility library. + @retval other Other errors. + +**/ +EFI_STATUS +WintNtInitializeNetUtilityData ( + IN OUT WIN_NT_SNP_PRIVATE *Private, + IN UINT8 ActiveInstance + ) +{ + EFI_STATUS Status; + CHAR16 *DllFileNameU; + INT32 ReturnValue; + BOOLEAN NetUtilityLibInitDone; + NT_NET_INTERFACE_INFO NetInterfaceInfoBuffer[MAX_INTERFACE_INFO_NUMBER]; + UINT32 InterfaceCount; + UINT8 ActiveInterfaceIndex; + + if (Private == NULL) { + return EFI_INVALID_PARAMETER; + } + + NetUtilityLibInitDone = FALSE; + InterfaceCount = MAX_INTERFACE_INFO_NUMBER; + DllFileNameU = NETWORK_LIBRARY_NAME_U; + + // + // Load network utility library + // + Private->NetworkLibraryHandle = LoadLibraryEx (DllFileNameU, NULL, 0); + if (NULL == Private->NetworkLibraryHandle) { + return EFI_NOT_FOUND; + } + + Private->NtNetUtilityTable.Initialize = (NT_NET_INITIALIZE) GetProcAddress (Private->NetworkLibraryHandle, NETWORK_LIBRARY_INITIALIZE); + if (NULL == Private->NtNetUtilityTable.Initialize) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + Private->NtNetUtilityTable.Finalize = (NT_NET_FINALIZE) GetProcAddress (Private->NetworkLibraryHandle, NETWORK_LIBRARY_FINALIZE); + if (NULL == Private->NtNetUtilityTable.Finalize) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + Private->NtNetUtilityTable.SetReceiveFilter = (NT_NET_SET_RECEIVE_FILTER) GetProcAddress (Private->NetworkLibraryHandle, NETWORK_LIBRARY_SET_RCV_FILTER); + if (NULL == Private->NtNetUtilityTable.SetReceiveFilter) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + Private->NtNetUtilityTable.Receive = (NT_NET_RECEIVE) GetProcAddress (Private->NetworkLibraryHandle, NETWORK_LIBRARY_RECEIVE); + if (NULL == Private->NtNetUtilityTable.Receive) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + Private->NtNetUtilityTable.Transmit = (NT_NET_TRANSMIT) GetProcAddress (Private->NetworkLibraryHandle, NETWORK_LIBRARY_TRANSMIT); + if (NULL == Private->NtNetUtilityTable.Transmit) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + // + // Initialize the network utility library + // And enumerate the interfaces in emulator host + // + ReturnValue = Private->NtNetUtilityTable.Initialize (&InterfaceCount, &NetInterfaceInfoBuffer[0]); + if (ReturnValue <= 0) { + Status = EFI_DEVICE_ERROR; + goto ErrorReturn; + } + + NetUtilityLibInitDone = TRUE; + + if (InterfaceCount == 0) { + Status = EFI_NOT_FOUND; + goto ErrorReturn; + } + + DEBUG ((DEBUG_INFO, "%a, total %d interface(s) found\n", __FUNCTION__, InterfaceCount)); + // + // Active interface index is set to first interface if given instance does + // not exist. + // + ActiveInterfaceIndex = (ActiveInstance >= InterfaceCount ? DEFAULT_SELECTED_NIC_INDEX : ActiveInstance); + + // + // Initialize instance + // + Status = WinNtInitializeInstanceData (&Private->Instance, &NetInterfaceInfoBuffer[ActiveInterfaceIndex]); + if (EFI_ERROR (Status)) { + goto ErrorReturn; + } + + return EFI_SUCCESS; + +ErrorReturn: + + if (Private->Instance.RecycledTxBuf != NULL) { + free (Private->Instance.RecycledTxBuf); + } + + if (NetUtilityLibInitDone) { + if (Private->NtNetUtilityTable.Finalize != NULL) { + Private->NtNetUtilityTable.Finalize (); + Private->NtNetUtilityTable.Finalize = NULL; + } + } + + return Status; +} + +/** + Release the net utility data. + + @param This Pointer to the private data. + + @retval EFI_SUCCESS The global data is released. + @retval other Other errors. + +**/ +EFI_STATUS +WintNtReleaseNetUtilityData ( + IN OUT WIN_NT_SNP_PRIVATE *Private + ) +{ + if (Private == NULL) { + return EFI_INVALID_PARAMETER; + } + + if (Private->Instance.RecycledTxBuf != NULL) { + free (Private->Instance.RecycledTxBuf); + } + + if (Private->NtNetUtilityTable.Finalize != NULL) { + Private->NtNetUtilityTable.Finalize (); + } + + FreeLibrary (Private->NetworkLibraryHandle); + + return EFI_SUCCESS; +} + +EMU_SNP_PROTOCOL mWinNtSnpProtocol = { + WinNtSnpCreateMapping, + WinNtSnpStart, + WinNtSnpStop, + WinNtSnpInitialize, + WinNtSnpReset, + WinNtSnpShutdown, + WinNtSnpReceiveFilters, + WinNtSnpStationAddress, + WinNtSnpStatistics, + WinNtSnpMCastIpToMac, + WinNtSnpNvData, + WinNtSnpGetStatus, + WinNtSnpTransmit, + WinNtSnpReceive +}; + +/** + Open SNP thunk protocol. + + @param This Pointer to the thunk protocol instance. + + @retval EFI_SUCCESS SNP thunk protocol is opened successfully. + @retval EFI_UNSUPPORTED This is not SNP thunk protocol. + @retval EFI_OUT_OF_RESOURCES Not enough memory. + @retval other Other errors. + +**/ +EFI_STATUS +WinNtSnpThunkOpen ( + IN EMU_IO_THUNK_PROTOCOL *This + ) +{ + WIN_NT_SNP_PRIVATE *Private; + UINT8 HostInterfaceIndex; + + HostInterfaceIndex = 0; + + if (This->Private != NULL) { + return EFI_ALREADY_STARTED; + } + + if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) { + return EFI_UNSUPPORTED; + } + + Private = malloc (sizeof (WIN_NT_SNP_PRIVATE)); + if (Private == NULL) { + return EFI_OUT_OF_RESOURCES; + } + + Private->Signature = WIN_NT_SIMPLE_NETWORK_PRIVATE_SIGNATURE; + Private->Thunk = This; + CopyMem (&Private->EmuSnp, &mWinNtSnpProtocol, sizeof (mWinNtSnpProtocol)); + + This->Interface = &Private->EmuSnp; + This->Private = Private; + + if (This->ConfigString != NULL && This->ConfigString[0] != '\0') { + HostInterfaceIndex = (UINT8)StrDecimalToUintn (This->ConfigString); + } + + return WintNtInitializeNetUtilityData (Private, HostInterfaceIndex); +} + +/** + Close SNP thunk protocol. + + @param This Pointer to the thunk protocol instance. + + @retval EFI_SUCCESS SNP thunk protocol is closed successfully. + @retval EFI_UNSUPPORTED This is not SNP thunk protocol. + @retval other Other errors. + +**/ +EFI_STATUS +WinNtSnpThunkClose ( + IN EMU_IO_THUNK_PROTOCOL *This + ) +{ + WIN_NT_SNP_PRIVATE *Private; + + if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) { + return EFI_UNSUPPORTED; + } + + Private = This->Private; + WintNtReleaseNetUtilityData (Private); + free (Private); + + return EFI_SUCCESS; +} + +EMU_IO_THUNK_PROTOCOL mWinNtSnpThunkIo = { + &gEmuSnpProtocolGuid, + NULL, + NULL, + 0, + WinNtSnpThunkOpen, + WinNtSnpThunkClose, + NULL +}; -- 2.20.1.windows.1