audk/OvmfPkg/VirtioNetDxe/SnpUnsupported.c

/** @file

  Empty implementation of the SNP methods that dependent protocols don't
  absolutely need and the UEFI-2.3.1+errC specification allows us not to
  support.

  Copyright (C) 2013, Red Hat, Inc.
  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "VirtioNet.h"

/**
  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
EFIAPI
VirtioNetReset (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This,
  IN BOOLEAN                      ExtendedVerification
  )
{
  return EFI_UNSUPPORTED;
}

/**
  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
EFIAPI
VirtioNetStationAddress (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This,
  IN BOOLEAN                      Reset,
  IN EFI_MAC_ADDRESS              *New OPTIONAL
  )
{
  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
EFIAPI
VirtioNetStatistics (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This,
  IN BOOLEAN                      Reset,
  IN OUT UINTN                    *StatisticsSize   OPTIONAL,
  OUT EFI_NETWORK_STATISTICS      *StatisticsTable  OPTIONAL
  )
{
  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
EFIAPI
VirtioNetNvData (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This,
  IN BOOLEAN                      ReadWrite,
  IN UINTN                        Offset,
  IN UINTN                        BufferSize,
  IN OUT VOID                     *Buffer
  )
{
  return EFI_UNSUPPORTED;
}