[PATCH v2] EmulatorPkg/WinHost: Enable network support.


Nickle Wang
 

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 <nickle.wang@...>
Signed-off-by: Derek Lin <derek.lin2@...>
---
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.<BR>
# Portions copyright (c) 2011, Apple Inc. All rights reserved.
+# (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
#
# 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.<BR>
-(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
+(C) Copyright 2016-2020 Hewlett Packard Enterprise Development LP<BR>
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.<BR>
+(C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent


@@ -29,6 +30,7 @@ Abstract:

#include <Protocol/EmuBlockIo.h>
#include <Protocol/BlockIo.h>
+#include <Protocol/EmuSnp.h>

#include <Library/BaseLib.h>
#include <Library/PeCoffLib.h>
@@ -41,6 +43,7 @@ Abstract:
#include <Library/BaseMemoryLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/PeCoffExtraActionLib.h>
+#include <Library/NetLib.h>


#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.<BR>
# Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>
+# (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
#
# 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.<BR>
+Portions copyright (c) 2011, Apple Inc. All rights reserved.
+(C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+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

Join devel@edk2.groups.io to automatically receive all group messages.