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1 /** @file
2
3 Implementation of the SNP.Stop() function and its private helpers if any.
4
5 Copyright (C) 2013, Red Hat, Inc.
6 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
7
8 This program and the accompanying materials are licensed and made available
9 under the terms and conditions of the BSD License which accompanies this
10 distribution. The full text of the license may be found at
11 http://opensource.org/licenses/bsd-license.php
12
13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
14 WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15
16 **/
17
18 #include <Library/UefiBootServicesTableLib.h>
19
20 #include "VirtioNet.h"
21
22 /**
23 Changes the state of a network interface from "started" to "stopped".
24
25 @param This Protocol instance pointer.
26
27 @retval EFI_SUCCESS The network interface was stopped.
28 @retval EFI_ALREADY_STARTED The network interface is already in the stopped
29 state.
30 @retval EFI_INVALID_PARAMETER One or more of the parameters has an
31 unsupported value.
32 @retval EFI_DEVICE_ERROR The command could not be sent to the network
33 interface.
34 @retval EFI_UNSUPPORTED This function is not supported by the network
35 interface.
36
37 **/
38
39 EFI_STATUS
40 EFIAPI
41 VirtioNetStop (
42 IN EFI_SIMPLE_NETWORK_PROTOCOL *This
43 )
44 {
45 VNET_DEV *Dev;
46 EFI_TPL OldTpl;
47 EFI_STATUS Status;
48
49 if (This == NULL) {
50 return EFI_INVALID_PARAMETER;
51 }
52
53 Dev = VIRTIO_NET_FROM_SNP (This);
54 OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
55 if (Dev->Snm.State != EfiSimpleNetworkStarted) {
56 Status = EFI_NOT_STARTED;
57 }
58 else {
59 Dev->Snm.State = EfiSimpleNetworkStopped;
60 Status = EFI_SUCCESS;
61 }
62
63 gBS->RestoreTPL (OldTpl);
64 return Status;
65 }