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 } 66
