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/** @file
Implementation of stopping a network interface.
Copyright (c) 2004 - 2007, Intel Corporation. <BR>
All rights reserved. This program and the accompanying materials are licensed
and made available under the terms and conditions of the BSD License which
accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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.StatCode,
Snp->Cdb.StatFlags)
);
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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