b26f0cf9ee
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/** @file
|
|
|
|
Implementation of the SNP.Shutdown() function and its private helpers if any.
|
|
|
|
Copyright (C) 2013, Red Hat, Inc.
|
|
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
|
|
Copyright (c) 2017, AMD Inc, All rights reserved.<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
|
|
#include "VirtioNet.h"
|
|
|
|
/**
|
|
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
|
|
EFIAPI
|
|
VirtioNetShutdown (
|
|
IN EFI_SIMPLE_NETWORK_PROTOCOL *This
|
|
)
|
|
{
|
|
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;
|
|
}
|
|
|
|
Dev->VirtIo->SetDeviceStatus (Dev->VirtIo, 0);
|
|
VirtioNetShutdownRx (Dev);
|
|
VirtioNetShutdownTx (Dev);
|
|
VirtioNetUninitRing (Dev, &Dev->TxRing, Dev->TxRingMap);
|
|
VirtioNetUninitRing (Dev, &Dev->RxRing, Dev->RxRingMap);
|
|
|
|
Dev->Snm.State = EfiSimpleNetworkStarted;
|
|
Status = EFI_SUCCESS;
|
|
|
|
Exit:
|
|
gBS->RestoreTPL (OldTpl);
|
|
return Status;
|
|
}
|