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/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
info.c
Abstract:
This module implements query/set information logic for the loopback
Transport Provider driver for NT LAN Manager.
Author:
Chuck Lenzmeier (chuckl) 6-Nov-1991
Revision History:
--*/
#include "loopback.h"
#include <windef.h>
#include <nb30.h>
NTSTATUS
LoopQueryInformation (
IN PIRP Irp,
IN PIO_STACK_LOCATION IrpSp
)
/*++
Routine Description:
This function handles the TdiQueryInformation request.
Arguments:
Irp - Pointer to I/O request packet
IrpSp - Pointer to current stack location in IRP
Return Value:
NTSTATUS - Status of request
--*/
{
NTSTATUS status;
PTDI_REQUEST_KERNEL_QUERY_INFORMATION queryRequest;
IF_DEBUG(LOOP1) DbgPrint( " Query Information request\n" );
queryRequest = (PTDI_REQUEST_KERNEL_QUERY_INFORMATION)&IrpSp->Parameters;
switch ( queryRequest->QueryType ) {
case TDI_QUERY_BROADCAST_ADDRESS:
{
PTA_NETBIOS_ADDRESS address;
if ( Irp->MdlAddress->ByteCount < sizeof(TA_NETBIOS_ADDRESS) ) {
status = STATUS_BUFFER_TOO_SMALL;
} else {
address = MmGetSystemAddressForMdl( Irp->MdlAddress );
address->TAAddressCount = 1;
address->Address[0].AddressType = TDI_ADDRESS_TYPE_NETBIOS;
address->Address[0].AddressLength = 0;
Irp->IoStatus.Information = sizeof(TA_NETBIOS_ADDRESS);
status = STATUS_SUCCESS;
}
break;
}
case TDI_QUERY_PROVIDER_INFORMATION:
{
PTDI_PROVIDER_INFO providerInfo;
if ( Irp->MdlAddress->ByteCount < sizeof(TDI_PROVIDER_INFO) ) {
status = STATUS_BUFFER_TOO_SMALL;
} else {
providerInfo = MmGetSystemAddressForMdl( Irp->MdlAddress );
ACQUIRE_LOOP_LOCK( "Query Information copy provider info" );
RtlMoveMemory(
providerInfo,
&LoopProviderInfo,
sizeof(TDI_PROVIDER_INFO)
);
RELEASE_LOOP_LOCK( "Query Information copy provider info done" );
Irp->IoStatus.Information = sizeof(TDI_PROVIDER_INFO);
status = STATUS_SUCCESS;
}
break;
}
case TDI_QUERY_ADAPTER_STATUS:
{
PADAPTER_STATUS adapterStatus;
PNAME_BUFFER name;
if ( Irp->MdlAddress->ByteCount <
(sizeof(ADAPTER_STATUS) + sizeof(NAME_BUFFER)) ) {
status = STATUS_BUFFER_TOO_SMALL;
} else {
adapterStatus = MmGetSystemAddressForMdl( Irp->MdlAddress );
RtlZeroMemory(
adapterStatus,
sizeof(ADAPTER_STATUS) + sizeof(NAME_BUFFER)
);
adapterStatus->rev_major = 3;
adapterStatus->rev_minor = 0x02;
adapterStatus->free_ncbs = 0xffff;
adapterStatus->max_cfg_ncbs = 0xffff;
adapterStatus->max_ncbs = 0xffff;
adapterStatus->max_dgram_size = 0xffff;
adapterStatus->max_cfg_sess = 0xffff;
adapterStatus->max_sess = 0xffff;
adapterStatus->max_sess_pkt_size = 0xffff;
adapterStatus->name_count = 1;
name = (PNAME_BUFFER)(adapterStatus + 1);
name->name_num = 1;
name->name_flags = REGISTERED | UNIQUE_NAME;
Irp->IoStatus.Information =
sizeof(ADAPTER_STATUS) + sizeof(NAME_BUFFER);
status = STATUS_SUCCESS;
}
break;
}
case TDI_QUERY_SESSION_STATUS:
status = STATUS_NOT_IMPLEMENTED;
break;
default:
status = STATUS_INVALID_PARAMETER;
}
//
// Complete the Query Information request.
//
Irp->IoStatus.Status = status;
IoCompleteRequest( Irp, 0 );
IF_DEBUG(LOOP1) DbgPrint( " Query Information request complete\n" );
return status;
} // LoopQueryInformation
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