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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 ((EFI_D_NET, "\nsnp->undi.stop() "));
(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
DEBUG (
(EFI_D_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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