mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-01 12:53:27 +01:00
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
|
/** @file
|
||
|
|
|
||
|
|
Implementation of the SNP.ReceiveFilters() function and its private helpers
|
||
|
|
if any.
|
||
|
|
|
||
|
|
Copyright (C) 2013, Red Hat, Inc.
|
||
|
|
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
|
||
|
|
|
||
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
|
||
|
|
**/
|
||
|
|
|
||
|
|
#include <Library/UefiBootServicesTableLib.h>
|
||
|
|
|
||
|
|
#include "VirtioNet.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
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
|
||
|
|
EFI_SIMPLE_NETWORK_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
|
||
|
|
EFIAPI
|
||
|
|
VirtioNetReceiveFilters (
|
||
|
|
IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
|
||
|
|
IN UINT32 Enable,
|
||
|
|
IN UINT32 Disable,
|
||
|
|
IN BOOLEAN ResetMCastFilter,
|
||
|
|
IN UINTN MCastFilterCnt OPTIONAL,
|
||
|
|
IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL
|
||
|
|
)
|
||
|
|
{
|
||
|
|
VNET_DEV *Dev;
|
||
|
|
EFI_TPL OldTpl;
|
||
|
|
EFI_STATUS Status;
|
||
|
|
|
||
|
|
if (This == NULL) {
|
||
|
|
return EFI_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
|
||
|
|
Dev = VIRTIO_NET_FROM_SNP (This);
|
||
|
|
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
||
|
|
switch (Dev->Snm.State) {
|
||
|
|
case EfiSimpleNetworkStopped:
|
||
|
|
Status = EFI_NOT_STARTED;
|
||
|
|
goto Exit;
|
||
|
|
case EfiSimpleNetworkStarted:
|
||
|
|
Status = EFI_DEVICE_ERROR;
|
||
|
|
goto Exit;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// MNP apparently fails to initialize on top of us if we simply return
|
||
|
|
// EFI_UNSUPPORTED in this function.
|
||
|
|
//
|
||
|
|
// Hence we openly refuse multicast functionality, and fake the rest by
|
||
|
|
// selecting a no stricter filter setting than whatever is requested. The
|
||
|
|
// UEFI-2.3.1+errC spec allows this. In practice we don't change our current
|
||
|
|
// (default) filter. Additionally, receiving software is responsible for
|
||
|
|
// discarding any packets getting through the filter.
|
||
|
|
//
|
||
|
|
Status = (
|
||
|
|
((Enable | Disable) & ~Dev->Snm.ReceiveFilterMask) != 0 ||
|
||
|
|
(!ResetMCastFilter && MCastFilterCnt > Dev->Snm.MaxMCastFilterCount)
|
||
|
|
) ? EFI_INVALID_PARAMETER : EFI_SUCCESS;
|
||
|
|
|
||
|
|
Exit:
|
||
|
|
gBS->RestoreTPL (OldTpl);
|
||
|
|
return Status;
|
||
|
|
}
|