177 lines
4.4 KiB
C
177 lines
4.4 KiB
C
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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cxinfo.c
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Abstract:
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TDI Set/Query Information routines.
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Author:
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Mike Massa (mikemas) February 20, 1997
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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mikemas 02-20-97 created
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Notes:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include "cxinfo.tmh"
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#ifdef ALLOC_PRAGMA
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#endif // ALLOC_PRAGMA
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#if 0
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#define CDP_SERVICE_FLAGS (TDI_SERVICE_CONNECTIONLESS_MODE | \
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TDI_SERVICE_BROADCAST_SUPPORTED)
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#else // 0
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#define CDP_SERVICE_FLAGS (TDI_SERVICE_CONNECTIONLESS_MODE)
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#endif // 0
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NTSTATUS
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CxQueryInformation(
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp
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)
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{
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NTSTATUS status = STATUS_SUCCESS;
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PCN_FSCONTEXT fsContext;
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PCX_ADDROBJ addrObj;
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CN_IRQL irql;
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PTDI_REQUEST_KERNEL_QUERY_INFORMATION queryInformation;
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ULONG fileType;
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ULONG infoSize;
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PVOID infoBuffer;
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union {
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TDI_PROVIDER_INFO ProviderInfo;
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TDI_ADDRESS_INFO AddressInfo;
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struct {
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TDI_ADDRESS_INFO AddressInfo;
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TDI_ADDRESS_CLUSTER ClusterAddress;
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} DummyAddressInfo;
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} info;
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fsContext = (PCN_FSCONTEXT) IrpSp->FileObject->FsContext;
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fileType = PtrToUlong(IrpSp->FileObject->FsContext2);
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queryInformation = (PTDI_REQUEST_KERNEL_QUERY_INFORMATION)
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&(IrpSp->Parameters);
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IF_CNDBG(CN_DEBUG_INFO) {
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CNPRINT((
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"[Clusnet] TDI query info type %u\n",
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queryInformation->QueryType
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));
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}
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switch(queryInformation->QueryType) {
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case TDI_QUERY_BROADCAST_ADDRESS:
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CnAssert(fileType == TDI_CONTROL_CHANNEL_FILE);
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status = STATUS_NOT_IMPLEMENTED;
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break;
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case TDI_QUERY_PROVIDER_INFO:
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CnAssert(fileType == TDI_CONTROL_CHANNEL_FILE);
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infoSize = sizeof(info.ProviderInfo);
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infoBuffer = &(info.ProviderInfo);
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info.ProviderInfo.Version = 0x0100;
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info.ProviderInfo.MaxSendSize = 0;
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info.ProviderInfo.MaxConnectionUserData = 0;
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info.ProviderInfo.MaxDatagramSize =
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CDP_MAX_SEND_SIZE(CX_SIGNATURE_LENGTH);
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info.ProviderInfo.ServiceFlags = CDP_SERVICE_FLAGS;
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info.ProviderInfo.MinimumLookaheadData = 1;
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info.ProviderInfo.MaximumLookaheadData = 0xFFFFF;
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info.ProviderInfo.NumberOfResources = 0;
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info.ProviderInfo.StartTime.QuadPart = 0;
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break;
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case TDI_QUERY_PROVIDER_STATISTICS:
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CnAssert(fileType == TDI_CONTROL_CHANNEL_FILE);
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status = STATUS_NOT_IMPLEMENTED;
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break;
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case TDI_QUERY_ADDRESS_INFO:
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if (fileType == TDI_TRANSPORT_ADDRESS_FILE) {
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infoSize = FIELD_OFFSET(TDI_ADDRESS_INFO, Address) +
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sizeof(TA_CLUSTER_ADDRESS);
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infoBuffer = &(info.AddressInfo);
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addrObj = (PCX_ADDROBJ) fsContext;
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//
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// Since no one knows what the activity count means, we'll just set
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// it to 1.
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//
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info.AddressInfo.ActivityCount = 1;
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CnAcquireLock(&(addrObj->Lock), &irql);
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CxBuildTdiAddress(
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&(info.AddressInfo.Address),
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CnLocalNodeId,
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addrObj->LocalPort,
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FALSE
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);
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CnReleaseLock(&(addrObj->Lock), irql);
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}
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else {
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status = STATUS_INVALID_DEVICE_REQUEST;
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}
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break;
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default:
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status = STATUS_INVALID_PARAMETER;
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break;
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}
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if (status == STATUS_SUCCESS) {
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PULONG pnBytes = &((ULONG)(Irp->IoStatus.Information));
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status = TdiCopyBufferToMdl(
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infoBuffer,
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0,
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infoSize,
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Irp->MdlAddress,
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0,
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pnBytes
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);
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}
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IF_CNDBG(CN_DEBUG_INFO) {
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CNPRINT((
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"[Clusnet] TDI query info returning status %lx, %u bytes\n",
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status,
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(ULONG)(Irp->IoStatus.Information)
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));
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}
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return(status);
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} // CxQueryInformation
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