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