xref: /device/linaro/bootloader/edk2/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>

  This program and the accompanying materials are licensed and made available
  under the terms and conditions of the BSD License which accompanies this
  distribution. The full text of the license may be found at
  http://opensource.org/licenses/bsd-license.php

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#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;
}