121 lines
3 KiB
C
121 lines
3 KiB
C
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/** @file
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Implementation of stopping a network interface.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "Snp.h"
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/**
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Call UNDI to stop the interface and changes the snp state.
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@param Snp Pointer to snp driver structure
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@retval EFI_SUCCESS The network interface was stopped.
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@retval EFI_DEVICE_ERROR SNP is not initialized.
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**/
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EFI_STATUS
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PxeStop (
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SNP_DRIVER *Snp
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)
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{
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Snp->Cdb.OpCode = PXE_OPCODE_STOP;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
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Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
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Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
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Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
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Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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Snp->Cdb.IFnum = Snp->IfNum;
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Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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//
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// Issue UNDI command
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//
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DEBUG ((EFI_D_NET, "\nsnp->undi.stop() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
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DEBUG (
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(EFI_D_WARN,
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"\nsnp->undi.stop() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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);
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return EFI_DEVICE_ERROR;
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}
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//
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// Set simple network state to Started and return success.
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//
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Snp->Mode.State = EfiSimpleNetworkStopped;
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return EFI_SUCCESS;
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}
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/**
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Changes the state of a network interface from "started" to "stopped."
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This function stops a network interface. This call is only valid if the network
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interface is in the started state. If the network interface was successfully
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stopped, then EFI_SUCCESS will be returned.
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@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL
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instance.
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@retval EFI_SUCCESS The network interface was stopped.
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@retval EFI_NOT_STARTED The network interface has not been started.
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@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a
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valid EFI_SIMPLE_NETWORK_PROTOCOL structure.
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@retval EFI_DEVICE_ERROR The command could not be sent to the network
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interface.
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@retval EFI_UNSUPPORTED This function is not supported by the network
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interface.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32Stop (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This
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)
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{
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SNP_DRIVER *Snp;
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EFI_TPL OldTpl;
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EFI_STATUS Status;
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if (This == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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switch (Snp->Mode.State) {
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case EfiSimpleNetworkStarted:
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break;
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case EfiSimpleNetworkStopped:
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Status = EFI_NOT_STARTED;
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goto ON_EXIT;
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default:
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Status = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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Status = PxeStop (Snp);
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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