1 /** @file 2 Implementation of stopping a network interface. 3 4 Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials are licensed 6 and made available under the terms and conditions of the BSD License which 7 accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include "Snp.h" 16 17 18 /** 19 Call UNDI to stop the interface and changes the snp state. 20 21 @param Snp Pointer to snp driver structure 22 23 @retval EFI_SUCCESS The network interface was stopped. 24 @retval EFI_DEVICE_ERROR SNP is not initialized. 25 26 **/ 27 EFI_STATUS 28 PxeStop ( 29 SNP_DRIVER *Snp 30 ) 31 { 32 Snp->Cdb.OpCode = PXE_OPCODE_STOP; 33 Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED; 34 Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED; 35 Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED; 36 Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED; 37 Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED; 38 Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE; 39 Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE; 40 Snp->Cdb.IFnum = Snp->IfNum; 41 Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST; 42 43 // 44 // Issue UNDI command 45 // 46 DEBUG ((EFI_D_NET, "\nsnp->undi.stop() ")); 47 48 (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb); 49 50 if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) { 51 DEBUG ( 52 (EFI_D_WARN, 53 "\nsnp->undi.stop() %xh:%xh\n", 54 Snp->Cdb.StatFlags, 55 Snp->Cdb.StatCode) 56 ); 57 58 return EFI_DEVICE_ERROR; 59 } 60 // 61 // Set simple network state to Started and return success. 62 // 63 Snp->Mode.State = EfiSimpleNetworkStopped; 64 return EFI_SUCCESS; 65 } 66 67 68 /** 69 Changes the state of a network interface from "started" to "stopped." 70 71 This function stops a network interface. This call is only valid if the network 72 interface is in the started state. If the network interface was successfully 73 stopped, then EFI_SUCCESS will be returned. 74 75 @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL 76 instance. 77 78 79 @retval EFI_SUCCESS The network interface was stopped. 80 @retval EFI_NOT_STARTED The network interface has not been started. 81 @retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a 82 valid EFI_SIMPLE_NETWORK_PROTOCOL structure. 83 @retval EFI_DEVICE_ERROR The command could not be sent to the network 84 interface. 85 @retval EFI_UNSUPPORTED This function is not supported by the network 86 interface. 87 88 **/ 89 EFI_STATUS 90 EFIAPI 91 SnpUndi32Stop ( 92 IN EFI_SIMPLE_NETWORK_PROTOCOL *This 93 ) 94 { 95 SNP_DRIVER *Snp; 96 EFI_TPL OldTpl; 97 EFI_STATUS Status; 98 99 if (This == NULL) { 100 return EFI_INVALID_PARAMETER; 101 } 102 103 Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This); 104 105 OldTpl = gBS->RaiseTPL (TPL_CALLBACK); 106 107 switch (Snp->Mode.State) { 108 case EfiSimpleNetworkStarted: 109 break; 110 111 case EfiSimpleNetworkStopped: 112 Status = EFI_NOT_STARTED; 113 goto ON_EXIT; 114 115 default: 116 Status = EFI_DEVICE_ERROR; 117 goto ON_EXIT; 118 } 119 120 Status = PxeStop (Snp); 121 122 ON_EXIT: 123 gBS->RestoreTPL (OldTpl); 124 125 return Status; 126 } 127
