58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/** @file
|
|
|
|
Implementation of the SNP.Start() 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"
|
|
|
|
/**
|
|
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
|
|
EFIAPI
|
|
VirtioNetStart (
|
|
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);
|
|
if (Dev->Snm.State != EfiSimpleNetworkStopped) {
|
|
Status = EFI_ALREADY_STARTED;
|
|
}
|
|
else {
|
|
Dev->Snm.State = EfiSimpleNetworkStarted;
|
|
Status = EFI_SUCCESS;
|
|
}
|
|
|
|
gBS->RestoreTPL (OldTpl);
|
|
return Status;
|
|
}
|