windows-nt/Source/XPSP1/NT/net/rras/ipx/rtrmgr/ifmgr.c
2020-09-26 16:20:57 +08:00

1522 lines
40 KiB
C

/*++
Copyright (c) 1995 Microsoft Corporation
Module Name:
ifmgr.c
Abstract:
This module contains the interface management functions
Author:
Stefan Solomon 03/06/1995
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
//
//*** Interface Manager Globals ***
//
// Counter of existing interfaces
ULONG InterfaceCount = 0;
//
//*** Interface Manager APIs ***
//
typedef struct _IF_TYPE_TRANSLATION {
ROUTER_INTERFACE_TYPE DIMInterfaceType;
ULONG MIBInterfaceType;
} IF_TYPE_TRANSLATION, *PIF_TYPE_TRANSLATION;
IF_TYPE_TRANSLATION IfTypeTranslation[] = {
{ ROUTER_IF_TYPE_FULL_ROUTER, IF_TYPE_WAN_ROUTER },
{ ROUTER_IF_TYPE_HOME_ROUTER, IF_TYPE_PERSONAL_WAN_ROUTER },
{ ROUTER_IF_TYPE_DEDICATED, IF_TYPE_LAN },
{ ROUTER_IF_TYPE_CLIENT, IF_TYPE_WAN_WORKSTATION },
{ ROUTER_IF_TYPE_INTERNAL, IF_TYPE_INTERNAL }
};
#define MAX_IF_TRANSLATION_TYPES sizeof(IfTypeTranslation)/sizeof(IF_TYPE_TRANSLATION)
/*++
Function: AddInterface
Descr: Creates the interface control block and adds the specific
structures of the interface info to the corresponding modules.
Arguments:
InterfaceNamep :
Pointer to a WCHAR string representing the interface name.
InterfaceInfop :
Pointer to an IPX_INFO_BLOCK_HEADER structure containing the
IPX, RIP and SAP interface information, static routes and static services.
Pointer to an IPX_INFO_BLOCK_HEADER structure containing the
traffic filters.
InterfaceType:
REMARK: In order for the router to be able to start, the internal interface
has to be added.
--*/
DWORD
AddInterface(
IN LPWSTR InterfaceNamep,
IN LPVOID InterfaceInfop,
// IN LPVOID InFilterInfop,
// IN LPVOID OutFilterInfop,
IN ROUTER_INTERFACE_TYPE DIMInterfaceType,
IN HANDLE hDIMInterface,
IN OUT PHANDLE phInterface)
{
PICB icbp;
ULONG InterfaceNameLen; // if name length in bytes including wchar NULL
PIPX_IF_INFO IpxIfInfop;
PIPX_STATIC_ROUTE_INFO StaticRtInfop;
PIPX_STATIC_SERVICE_INFO StaticSvInfop;
PIPXWAN_IF_INFO IpxwanIfInfop;
PIPX_TRAFFIC_FILTER_GLOBAL_INFO InFltGlInfo, OutFltGlInfo;
// PUCHAR TrafficFilterInfop;
PIPX_INFO_BLOCK_HEADER IfInfop = (PIPX_INFO_BLOCK_HEADER)InterfaceInfop;
PACB acbp;
ULONG AdapterNameLen = 0; // length of adapter name
// for ROUTER_IF_TYPE_DEDICATED interface type.
PIPX_TOC_ENTRY tocep;
UINT i;
PIPX_ADAPTER_INFO AdapterInfop;
ULONG tmp;
FW_IF_INFO FwIfInfo;
PIF_TYPE_TRANSLATION ittp;
ULONG InterfaceIndex;
PIPX_STATIC_NETBIOS_NAME_INFO StaticNbInfop;
Trace(INTERFACE_TRACE, "AddInterface: Entered for interface %S", InterfaceNamep);
if(InterfaceInfop == NULL) {
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: Missing interface info for interface %ls\n", InterfaceNamep);
return ERROR_CAN_NOT_COMPLETE;
}
// interface name length including the unicode null
InterfaceNameLen = (wcslen(InterfaceNamep) + 1) * sizeof(WCHAR);
// If the interface type if ROUTER_IF_TYPE_DEDICATED (LAN Adapter) we parse the
// interface name to extract the adapter name and the packet type.
// The packet type will be then converted to an integer and the two will
// be used to identify a corresponding adapter.
if(DIMInterfaceType == ROUTER_IF_TYPE_DEDICATED) {
PWCHAR pszStart, pszEnd;
DWORD dwGuidLength = 37;
// get the lan adapter specific info from the interface
if((AdapterInfop = (PIPX_ADAPTER_INFO)GetInfoEntry(InterfaceInfop,
IPX_ADAPTER_INFO_TYPE)) == NULL)
{
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: Dedicated interface %ls missing adapter info\n", InterfaceNamep);
return ERROR_INVALID_PARAMETER;
}
// If the supplied adater is a reference to a guid, then use the name
// of the guid supplied in the interface name. This is because load/save
// config's can cause these two to get out of sync.
pszStart = wcsstr (InterfaceNamep, L"{");
pszEnd = wcsstr (InterfaceNamep, L"}");
if ( (pszStart) &&
(pszEnd) &&
(pszStart == InterfaceNamep) &&
((DWORD)(pszEnd - pszStart) == dwGuidLength) )
{
wcsncpy (AdapterInfop->AdapterName, InterfaceNamep, dwGuidLength);
}
AdapterNameLen = (wcslen(AdapterInfop->AdapterName) + 1) * sizeof(WCHAR);
}
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
// Check if this is the internal interface. If it is and if we
// already have the internal interface, we return an error
if((DIMInterfaceType == ROUTER_IF_TYPE_INTERNAL) &&
(InternalInterfacep)) {
RELEASE_DATABASE_LOCK;
// internal interface already exists
Trace(INTERFACE_TRACE, "AddInterface: INTERNAL interface already exists\n");
return ERROR_INVALID_PARAMETER;
}
// Allocate a new ICB and initialize it
// we allocate the interface and adapter name buffers at the end of the
// ICB struct.
if((icbp = (PICB)GlobalAlloc(GPTR,
sizeof(ICB) +
InterfaceNameLen +
AdapterNameLen)) == NULL) {
RELEASE_DATABASE_LOCK;
// can't alloc memory
SS_ASSERT(FALSE);
return ERROR_OUT_OF_STRUCTURES;
}
// signature
memcpy(&icbp->Signature, InterfaceSignature, 4);
// get a new index and increment the global interface index counter
// if this is not the internal interface. For the internal interface we
// have reserved index 0
if(DIMInterfaceType == ROUTER_IF_TYPE_INTERNAL) {
icbp->InterfaceIndex = 0;
}
else
{
icbp->InterfaceIndex = GetNextInterfaceIndex();
if(icbp->InterfaceIndex == MAX_INTERFACE_INDEX) {
GlobalFree(icbp);
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
}
InterfaceIndex = icbp->InterfaceIndex;
// copy the interface name
icbp->InterfaceNamep = (PWSTR)((PUCHAR)icbp + sizeof(ICB));
memcpy(icbp->InterfaceNamep, InterfaceNamep, InterfaceNameLen);
// copy the adapter name and packet type if dedicated interface
if(DIMInterfaceType == ROUTER_IF_TYPE_DEDICATED) {
icbp->AdapterNamep = (PWSTR)((PUCHAR)icbp + sizeof(ICB) + InterfaceNameLen);
wcscpy(icbp->AdapterNamep, AdapterInfop->AdapterName);
icbp->PacketType = AdapterInfop->PacketType;
}
else
{
icbp->AdapterNamep = NULL;
icbp->PacketType = 0;
}
// insert the if in the index hash table
AddIfToDB(icbp);
// get the if handle used when calling DIM entry points
icbp->hDIMInterface = hDIMInterface;
// reset the update status fields
ResetUpdateRequest(icbp);
// mark connection not requested yet
icbp->ConnectionRequestPending = FALSE;
// get to the interface entries in the interface info block
if(((IpxIfInfop = (PIPX_IF_INFO)GetInfoEntry(InterfaceInfop, IPX_INTERFACE_INFO_TYPE)) == NULL) ||
((IpxwanIfInfop = (PIPXWAN_IF_INFO)GetInfoEntry(InterfaceInfop, IPXWAN_INTERFACE_INFO_TYPE)) == NULL)) {
RemoveIfFromDB(icbp);
GlobalFree(icbp);
RELEASE_DATABASE_LOCK;
// don't have all ipx or ipxwan interfaces info
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: missing ipx or ipxwan interface info\n");
return ERROR_INVALID_PARAMETER;
}
// Initialize the Admin State and the Oper State of this interface.
// Oper State may be changed will be changed later to OPER_STATE_SLEEPING
// if this is a WAN interface.
icbp->OperState = OPER_STATE_DOWN;
// set the DIM interface type of this ICB
icbp->DIMInterfaceType = DIMInterfaceType;
// set the MIB interface type of this ICB
icbp->MIBInterfaceType = IF_TYPE_OTHER;
for(i=0, ittp=IfTypeTranslation; i<MAX_IF_TRANSLATION_TYPES; i++, ittp++) {
if(icbp->DIMInterfaceType == ittp->DIMInterfaceType) {
icbp->MIBInterfaceType = ittp->MIBInterfaceType;
break;
}
}
// create the routing protocols (rip/sap or nlsp) interface info
// If the routing protocols interface info is missing this will fail
if(CreateRoutingProtocolsInterfaces(InterfaceInfop, icbp) != NO_ERROR) {
RELEASE_DATABASE_LOCK;
// don't have all rip and sap interfaces info
Trace(INTERFACE_TRACE, "AddInterface: Bad routing protocols interface config info\n");
goto ErrorExit;
}
// create the Forwarder interface
FwIfInfo.NetbiosAccept = IpxIfInfop->NetbiosAccept;
FwIfInfo.NetbiosDeliver = IpxIfInfop->NetbiosDeliver;
FwCreateInterface(icbp->InterfaceIndex,
MapIpxToNetInterfaceType(icbp),
&FwIfInfo);
// Seed the traffic filters
if ((tocep = GetTocEntry(InterfaceInfop, IPX_IN_TRAFFIC_FILTER_INFO_TYPE))!=NULL) {
if ((InFltGlInfo = GetInfoEntry(InterfaceInfop, IPX_IN_TRAFFIC_FILTER_GLOBAL_INFO_TYPE)) == NULL) {
RELEASE_DATABASE_LOCK;
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: Bad input filters config info");
goto ErrorExit;
}
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND,
InFltGlInfo->FilterAction, // pass or don't pass
tocep->InfoSize, // filter size
(LPBYTE)InterfaceInfop+tocep->Offset,
tocep->InfoSize*tocep->Count) != NO_ERROR) {
RELEASE_DATABASE_LOCK;
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: Bad input filters config info");
goto ErrorExit;
}
}
else { // No Filters -> delete all
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND, // in or outbound,
0, // pass or don't pass
0, // filter size
NULL,
0)!=NO_ERROR) {
RELEASE_DATABASE_LOCK;
Trace(INTERFACE_TRACE, "AddInterface: Could not delete input filters");
goto ErrorExit;
}
}
if ((tocep = GetTocEntry(InterfaceInfop, IPX_OUT_TRAFFIC_FILTER_INFO_TYPE))!=NULL) {
if ((OutFltGlInfo = GetInfoEntry(InterfaceInfop, IPX_OUT_TRAFFIC_FILTER_GLOBAL_INFO_TYPE)) == NULL) {
RELEASE_DATABASE_LOCK;
Trace(INTERFACE_TRACE, "AddInterface: Bad output filters config info");
goto ErrorExit;
}
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND,
OutFltGlInfo->FilterAction, // pass or don't pass
tocep->InfoSize, // filter size
(LPBYTE)InterfaceInfop+tocep->Offset,
tocep->InfoSize*tocep->Count) != NO_ERROR) {
RELEASE_DATABASE_LOCK;
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "AddInterface: Bad output filters config info");
goto ErrorExit;
}
}
else { // No Filters -> delete all
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND, // in or outbound,
0, // pass or don't pass
0, // filter size
NULL,
0)!=NO_ERROR) {
RELEASE_DATABASE_LOCK;
Trace(INTERFACE_TRACE, "AddInterface: Could not delete output filters");
goto ErrorExit;
}
}
// mark the interface reachable
icbp->InterfaceReachable = TRUE;
// set the admin state
if(IpxIfInfop->AdminState == ADMIN_STATE_ENABLED) {
AdminEnable(icbp);
}
else
{
AdminDisable(icbp);
}
// seed the static routes
if(DIMInterfaceType!=ROUTER_IF_TYPE_CLIENT) {
if (tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_ROUTE_INFO_TYPE)) {
StaticRtInfop = (PIPX_STATIC_ROUTE_INFO)GetInfoEntry(InterfaceInfop,
IPX_STATIC_ROUTE_INFO_TYPE);
for(i=0; i<tocep->Count; i++, StaticRtInfop++) {
CreateStaticRoute(icbp, StaticRtInfop);
}
}
// seed the static services
if(tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_SERVICE_INFO_TYPE)) {
StaticSvInfop = (PIPX_STATIC_SERVICE_INFO)GetInfoEntry(InterfaceInfop,
IPX_STATIC_SERVICE_INFO_TYPE);
for(i=0; i<tocep->Count; i++, StaticSvInfop++) {
CreateStaticService(icbp, StaticSvInfop);
}
}
// seed the static netbios names
if(tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_NETBIOS_NAME_INFO_TYPE)) {
StaticNbInfop = (PIPX_STATIC_NETBIOS_NAME_INFO)GetInfoEntry(InterfaceInfop,
IPX_STATIC_NETBIOS_NAME_INFO_TYPE);
FwSetStaticNetbiosNames(icbp->InterfaceIndex,
tocep->Count,
StaticNbInfop);
}
}
// set the IPXWAN interface info
icbp->EnableIpxWanNegotiation = IpxwanIfInfop->AdminState;
// mark the interface as unbound to an adapter (default)
icbp->acbp = NULL;
// check if we can bind it now to an adapter. We can do this only for a
// a dedicated (LAN) interface or for an internal interface.
switch(icbp->DIMInterfaceType) {
case ROUTER_IF_TYPE_DEDICATED:
// Only bind interface if internal interface is already
// created and bound
if (InternalInterfacep && InternalInterfacep->acbp) {
// check if we have an adapter with a corresponding name and
// packet type
if((acbp = GetAdapterByNameAndPktType (icbp->AdapterNamep,
icbp->PacketType)) != NULL) {
BindInterfaceToAdapter(icbp, acbp);
}
}
break;
case ROUTER_IF_TYPE_INTERNAL:
// get the pointer to the internal interface
InternalInterfacep = icbp;
// check that we have the adapter with adapter index 0 which
// represents the internal adapter
if(InternalAdapterp) {
PLIST_ENTRY lep;
acbp = InternalAdapterp;
BindInterfaceToAdapter(icbp, acbp);
lep = IndexIfList.Flink;
// Bind all previously added dedicated interfaces that were
// not bound awaiting for internal interface to be added
while(lep != &IndexIfList) {
PACB acbp2;
PICB icbp2 = CONTAINING_RECORD(lep, ICB, IndexListLinkage);
lep = lep->Flink;
switch(icbp2->DIMInterfaceType) {
case ROUTER_IF_TYPE_DEDICATED:
// check if we have an adapter with a corresponding name and
// packet type
if ((icbp2->acbp==NULL)
&&((acbp2 = GetAdapterByNameAndPktType (icbp2->AdapterNamep,
icbp2->PacketType)) != NULL)) {
BindInterfaceToAdapter(icbp2, acbp2);
}
}
}
}
break;
default:
if (icbp->AdminState==ADMIN_STATE_ENABLED)
// this is a WAN interface. As long as it isn't connected, and
// enabled the oper state will be sleeping on this interface
icbp->OperState = OPER_STATE_SLEEPING;
break;
}
// increment the interface counter
InterfaceCount++;
switch(icbp->DIMInterfaceType)
{
case ROUTER_IF_TYPE_DEDICATED:
if(icbp->acbp) {
Trace(INTERFACE_TRACE, "AddInterface: created LAN interface: # %d name %ls bound to adapter # %d name %ls\n",
icbp->InterfaceIndex,
icbp->InterfaceNamep,
icbp->acbp->AdapterIndex,
icbp->AdapterNamep);
}
else
{
Trace(INTERFACE_TRACE, "AddInterface: created LAN interface: # %d name %ls unbound to any adapter\n",
icbp->InterfaceIndex,
icbp->InterfaceNamep);
}
break;
case ROUTER_IF_TYPE_INTERNAL:
if(icbp->acbp) {
Trace(INTERFACE_TRACE, "AddInterface: created INTERNAL interface: # %d name %ls bound to internal adapter\n",
icbp->InterfaceIndex,
icbp->InterfaceNamep);
}
else
{
Trace(INTERFACE_TRACE, "AddInterface: created INTERNAL interface: # %d name %ls unbound to any adapter\n",
icbp->InterfaceIndex,
icbp->InterfaceNamep);
}
break;
default:
Trace(INTERFACE_TRACE, "AddInterface: created WAN interface: # %d name %ls\n",
icbp->InterfaceIndex,
icbp->InterfaceNamep);
break;
}
RELEASE_DATABASE_LOCK;
// return the allocated if index
*phInterface = (HANDLE)UlongToPtr(icbp->InterfaceIndex);
return NO_ERROR;
ErrorExit:
InterfaceCount++;
DeleteInterface((HANDLE)UlongToPtr(InterfaceIndex));
return ERROR_CAN_NOT_COMPLETE;
}
/*++
Function: DeleteInterface
Descr:
--*/
DWORD
DeleteInterface(HANDLE InterfaceIndex)
{
PICB icbp;
Trace(INTERFACE_TRACE, "DeleteInterface: Entered for interface # %d\n",
InterfaceIndex);
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
icbp = GetInterfaceByIndex(PtrToUlong(InterfaceIndex));
if(icbp == NULL) {
RELEASE_DATABASE_LOCK;
return ERROR_INVALID_PARAMETER;
}
if(memcmp(&icbp->Signature, InterfaceSignature, 4)) {
// not a valid if pointer
SS_ASSERT(FALSE);
RELEASE_DATABASE_LOCK;
return ERROR_INVALID_PARAMETER;
}
// if bound to an adapter -> unbind
if(icbp->acbp) {
UnbindInterfaceFromAdapter(icbp);
}
// delete the routing protocols interfaces
DeleteRoutingProtocolsInterfaces(icbp->InterfaceIndex);
// delete all static routes from RTM
DeleteAllStaticRoutes(icbp->InterfaceIndex);
DeleteAllStaticServices(icbp->InterfaceIndex);
// delete the Fw interface. This will delete all associated filters
FwDeleteInterface(icbp->InterfaceIndex);
// remove the if from the data base
RemoveIfFromDB(icbp);
// done
GlobalFree(icbp);
// decrement the interface counter
InterfaceCount--;
RELEASE_DATABASE_LOCK;
Trace(INTERFACE_TRACE, "DeleteInterface: Deleted interface %d\n", InterfaceIndex);
return NO_ERROR;
}
/*++
Function: GetInterfaceInfo
Descr:
--*/
DWORD
GetInterfaceInfo(
IN HANDLE InterfaceIndex,
OUT LPVOID InterfaceInfop,
IN OUT DWORD *InterfaceInfoSize
// OUT LPVOID InFilterInfo,
// IN OUT DWORD *InFilterInfoSize,
// OUT LPVOID OutFilterInfo,
// IN OUT DWORD *OutFilterInfoSize
)
{
PICB icbp;
PIPX_INFO_BLOCK_HEADER ibhp, fbhp;
PIPX_TOC_ENTRY tocep;
PIPX_IF_INFO IpxIfInfop;
PIPX_STATIC_ROUTE_INFO StaticRtInfop;
PIPX_STATIC_SERVICE_INFO StaticSvInfop;
PIPXWAN_IF_INFO IpxwanIfInfop;
PIPX_ADAPTER_INFO IpxAdapterInfop;
PIPX_TRAFFIC_FILTER_GLOBAL_INFO InFltGlInfo, OutFltGlInfo;
ULONG InFltAction, OutFltAction;
ULONG InFltSize, OutFltSize;
ULONG InFltInfoSize=0, OutFltInfoSize=0;
FW_IF_STATS FwIfStats;
ULONG iftoccount = 0;
ULONG ifinfolen = 0;
ULONG NextInfoOffset;
ULONG IpxIfOffset = 0;
ULONG StaticRtOffset = 0;
ULONG StaticSvOffset = 0;
IPX_STATIC_ROUTE_INFO StaticRoute;
UINT i;
HANDLE EnumHandle;
FW_IF_INFO FwIfInfo;
ULONG StaticRoutesCount, StaticServicesCount, TrafficFiltersCount;
DWORD rc;
PIPX_STATIC_NETBIOS_NAME_INFO NetbiosNamesInfop;
ULONG NetbiosNamesCount = 0;
Trace(INTERFACE_TRACE, "GetInterfaceInfo: Entered for interface # %d\n", InterfaceIndex);
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
if((icbp = GetInterfaceByIndex(PtrToUlong(InterfaceIndex))) == NULL) {
RELEASE_DATABASE_LOCK;
Trace(INTERFACE_TRACE, "GetInterfaceInfo: Nonexistent interface with # %d\n", InterfaceIndex);
return ERROR_INVALID_HANDLE;
}
SS_ASSERT(!memcmp(&icbp->Signature, InterfaceSignature, 4));
// calculate the minimum number of toc entries we should have:
// ipx toc entry
// routing protocols toc entries
// ipxwan toc entry
iftoccount = 2 + RoutingProtocolsTocCount();
// if this is a lan adapter, it should also have adapter info
if(icbp->DIMInterfaceType == ROUTER_IF_TYPE_DEDICATED) {
iftoccount++;
}
// calculate the minimun length of the interface info block
ifinfolen = sizeof(IPX_INFO_BLOCK_HEADER) +
(iftoccount - 1) * sizeof(IPX_TOC_ENTRY) +
sizeof(IPX_IF_INFO) +
SizeOfRoutingProtocolsIfsInfo(PtrToUlong(InterfaceIndex)) +
sizeof(IPXWAN_IF_INFO);
// if this is a lan adapter, add the size of the adapter info
if(icbp->DIMInterfaceType == ROUTER_IF_TYPE_DEDICATED) {
ifinfolen += sizeof(IPX_ADAPTER_INFO);
}
if(StaticRoutesCount = GetStaticRoutesCount(icbp->InterfaceIndex)) {
ifinfolen += sizeof(IPX_TOC_ENTRY) +
StaticRoutesCount * sizeof(IPX_STATIC_ROUTE_INFO);
iftoccount++;
}
if(StaticServicesCount = GetStaticServicesCount(icbp->InterfaceIndex)) {
ifinfolen += sizeof(IPX_TOC_ENTRY) +
StaticServicesCount * sizeof(IPX_STATIC_SERVICE_INFO);
iftoccount++;
}
FwGetStaticNetbiosNames(icbp->InterfaceIndex,
&NetbiosNamesCount,
NULL);
if(NetbiosNamesCount) {
ifinfolen += sizeof(IPX_TOC_ENTRY) +
NetbiosNamesCount * sizeof(IPX_STATIC_NETBIOS_NAME_INFO);
iftoccount++;
}
// get the length of the filters info
rc = GetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND,
&InFltAction,
&InFltSize,
NULL,
&InFltInfoSize);
if((rc != NO_ERROR) && (rc != ERROR_INSUFFICIENT_BUFFER)) {
RELEASE_DATABASE_LOCK;
return rc;
}
if (InFltInfoSize>0) {
ifinfolen += sizeof (IPX_TOC_ENTRY)*2 + InFltInfoSize
+ sizeof (IPX_TRAFFIC_FILTER_GLOBAL_INFO);
iftoccount += 2;
}
rc = GetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND,
&OutFltAction,
&OutFltSize,
NULL,
&OutFltInfoSize);
if((rc != NO_ERROR) && (rc != ERROR_INSUFFICIENT_BUFFER)) {
RELEASE_DATABASE_LOCK;
return rc;
}
if (OutFltInfoSize>0) {
ifinfolen += sizeof (IPX_TOC_ENTRY)*2 + OutFltInfoSize
+ sizeof (IPX_TRAFFIC_FILTER_GLOBAL_INFO);
iftoccount += 2;
}
// check if we have valid and sufficient buffers
if((InterfaceInfop == NULL) ||
(ifinfolen > *InterfaceInfoSize)) {
*InterfaceInfoSize = ifinfolen;
RELEASE_DATABASE_LOCK;
return ERROR_INSUFFICIENT_BUFFER;
}
*InterfaceInfoSize = ifinfolen;
//
// Start filling in the interface info block
//
// start of the info block
ibhp = (PIPX_INFO_BLOCK_HEADER)InterfaceInfop;
// offset of the first INFO entry
NextInfoOffset = sizeof(IPX_INFO_BLOCK_HEADER) +
(iftoccount -1) * sizeof(IPX_TOC_ENTRY);
ibhp->Version = IPX_ROUTER_VERSION_1;
ibhp->Size = ifinfolen;
ibhp->TocEntriesCount = iftoccount;
tocep = ibhp->TocEntry;
// ipx if toc entry
tocep->InfoType = IPX_INTERFACE_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_IF_INFO);
tocep->Count = 1;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
// ipx if info entry
IpxIfInfop = (PIPX_IF_INFO)((PUCHAR)ibhp + tocep->Offset);
IpxIfInfop->AdminState = icbp->AdminState;
FwGetInterface(icbp->InterfaceIndex,
&FwIfInfo,
&FwIfStats);
IpxIfInfop->NetbiosAccept = FwIfInfo.NetbiosAccept;
IpxIfInfop->NetbiosDeliver = FwIfInfo.NetbiosDeliver;
// create the toc and info entries for the routing protocols in the
// ouput buffer; this function will update the current TOC entry pointer
// value (tocep) and the current next entry info offset value (nextInfoOffset)
if((rc = CreateRoutingProtocolsTocAndInfoEntries(ibhp,
icbp->InterfaceIndex,
&tocep,
&NextInfoOffset)) != NO_ERROR) {
RELEASE_DATABASE_LOCK;
return rc;
}
// ipxwan if toc entry
tocep++;
tocep->InfoType = IPXWAN_INTERFACE_INFO_TYPE;
tocep->InfoSize = sizeof(IPXWAN_IF_INFO);
tocep->Count = 1;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
// ipxwan if info entry
IpxwanIfInfop = (PIPXWAN_IF_INFO)((PUCHAR)ibhp + tocep->Offset);
IpxwanIfInfop->AdminState = icbp->EnableIpxWanNegotiation;
// if this is a lan interface, fill in the adapter info
if(icbp->DIMInterfaceType == ROUTER_IF_TYPE_DEDICATED) {
// ipx adapter toc entry
tocep++;
tocep->InfoType = IPX_ADAPTER_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_ADAPTER_INFO);
tocep->Count = 1;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
// ipx adapter info entry
IpxAdapterInfop = (PIPX_ADAPTER_INFO)((PUCHAR)ibhp + tocep->Offset);
IpxAdapterInfop->PacketType = icbp->PacketType;
wcscpy(IpxAdapterInfop->AdapterName, icbp->AdapterNamep);
}
// static routes toc + info entries
if(StaticRoutesCount) {
// static routes toc entry
tocep++;
tocep->InfoType = IPX_STATIC_ROUTE_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_STATIC_ROUTE_INFO);
tocep->Count = StaticRoutesCount;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
// Create static routes enumeration handle for this interface
EnumHandle = CreateStaticRoutesEnumHandle(icbp->InterfaceIndex);
for(i=0, StaticRtInfop = (PIPX_STATIC_ROUTE_INFO)((PUCHAR)ibhp + tocep->Offset);
i<StaticRoutesCount;
i++, StaticRtInfop++) {
GetNextStaticRoute(EnumHandle, StaticRtInfop);
}
// Close the enumeration handle
CloseStaticRoutesEnumHandle(EnumHandle);
}
// static services toc + info entries
if(StaticServicesCount) {
// static services toc entry
tocep++;
tocep->InfoType = IPX_STATIC_SERVICE_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_STATIC_SERVICE_INFO);
tocep->Count = StaticServicesCount;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
// Create static services enumeration handle for this interface
EnumHandle = CreateStaticServicesEnumHandle(icbp->InterfaceIndex);
for(i=0, StaticSvInfop = (PIPX_STATIC_SERVICE_INFO)((PUCHAR)ibhp + tocep->Offset);
i<StaticServicesCount;
i++, StaticSvInfop++) {
GetNextStaticService(EnumHandle, StaticSvInfop);
}
// Close the enumeration handle
CloseStaticServicesEnumHandle(EnumHandle);
}
// static netbios names toc + info entries
if(NetbiosNamesCount) {
// static netbios names toc entry
tocep++;
tocep->InfoType = IPX_STATIC_NETBIOS_NAME_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_STATIC_NETBIOS_NAME_INFO);
tocep->Count = NetbiosNamesCount;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
NetbiosNamesInfop = (PIPX_STATIC_NETBIOS_NAME_INFO)((PUCHAR)ibhp + tocep->Offset);
rc = FwGetStaticNetbiosNames(icbp->InterfaceIndex,
&NetbiosNamesCount,
NetbiosNamesInfop);
if(rc != NO_ERROR) {
RELEASE_DATABASE_LOCK;
return rc;
}
}
if(InFltInfoSize) {
// traffic filter input global info
tocep++;
tocep->InfoType = IPX_IN_TRAFFIC_FILTER_GLOBAL_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_TRAFFIC_FILTER_GLOBAL_INFO);
tocep->Count = 1;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
InFltGlInfo = (PIPX_TRAFFIC_FILTER_GLOBAL_INFO)((PUCHAR)ibhp + tocep->Offset);
rc = GetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND,
&InFltAction,
&InFltSize,
(LPBYTE)InterfaceInfop+NextInfoOffset,
&InFltInfoSize);
if(rc != NO_ERROR) {
RELEASE_DATABASE_LOCK;
return rc;
}
InFltGlInfo->FilterAction = InFltAction;
// traffic filter input global info
tocep++;
tocep->InfoType = IPX_IN_TRAFFIC_FILTER_INFO_TYPE;
tocep->InfoSize = InFltSize;
tocep->Count = InFltInfoSize/InFltSize;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
}
if(OutFltInfoSize) {
// traffic filter input global info
tocep++;
tocep->InfoType = IPX_OUT_TRAFFIC_FILTER_GLOBAL_INFO_TYPE;
tocep->InfoSize = sizeof(IPX_TRAFFIC_FILTER_GLOBAL_INFO);
tocep->Count = 1;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
OutFltGlInfo = (PIPX_TRAFFIC_FILTER_GLOBAL_INFO)((PUCHAR)ibhp + tocep->Offset);
rc = GetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND,
&OutFltAction,
&OutFltSize,
(LPBYTE)InterfaceInfop+NextInfoOffset,
&OutFltInfoSize);
if(rc != NO_ERROR) {
RELEASE_DATABASE_LOCK;
return rc;
}
OutFltGlInfo->FilterAction = OutFltAction;
// traffic filter input global info
tocep++;
tocep->InfoType = IPX_OUT_TRAFFIC_FILTER_INFO_TYPE;
tocep->InfoSize = OutFltSize;
tocep->Count = OutFltInfoSize/OutFltSize;
tocep->Offset = NextInfoOffset;
NextInfoOffset += tocep->Count * tocep->InfoSize;
}
RELEASE_DATABASE_LOCK;
return NO_ERROR;
}
/*++
Function: SetInterfaceInfo
Descr:
--*/
DWORD
SetInterfaceInfo(
IN HANDLE InterfaceIndex,
IN LPVOID InterfaceInfop)
{
PICB icbp;
PIPX_IF_INFO IpxIfInfop;
PIPXWAN_IF_INFO IpxwanIfInfop;
PIPX_STATIC_ROUTE_INFO NewStaticRtInfop;
PIPX_STATIC_SERVICE_INFO NewStaticSvInfop;
PIPX_INFO_BLOCK_HEADER IfInfop = (PIPX_INFO_BLOCK_HEADER)InterfaceInfop;
PIPX_TOC_ENTRY tocep;
DWORD rc = NO_ERROR;
HANDLE EnumHandle;
FW_IF_INFO FwIfInfo;
PIPX_STATIC_NETBIOS_NAME_INFO StaticNbInfop;
PIPX_TRAFFIC_FILTER_GLOBAL_INFO InFltGlInfo, OutFltGlInfo;
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
if((icbp = GetInterfaceByIndex(PtrToUlong(InterfaceIndex))) == NULL) {
RELEASE_DATABASE_LOCK;
return ERROR_INVALID_HANDLE;
}
SS_ASSERT(!memcmp(&icbp->Signature, InterfaceSignature, 4));
// check if there was a change in the interface info block
if(IfInfop == NULL) {
RELEASE_DATABASE_LOCK;
return NO_ERROR;
}
// check that we have all the mandatory info blocks
if(((IpxIfInfop = (PIPX_IF_INFO)GetInfoEntry(InterfaceInfop, IPX_INTERFACE_INFO_TYPE)) == NULL) ||
((IpxwanIfInfop = (PIPXWAN_IF_INFO)GetInfoEntry(InterfaceInfop, IPXWAN_INTERFACE_INFO_TYPE)) == NULL)) {
RELEASE_DATABASE_LOCK;
// invalid info
return ERROR_INVALID_PARAMETER;
}
if(SetRoutingProtocolsInterfaces(InterfaceInfop,
icbp->InterfaceIndex) != NO_ERROR) {
RELEASE_DATABASE_LOCK;
// invalid info
return ERROR_INVALID_PARAMETER;
}
// set ipx if info changes
if(icbp->AdminState != IpxIfInfop->AdminState) {
if(IpxIfInfop->AdminState == ADMIN_STATE_ENABLED) {
AdminEnable(icbp);
}
else
{
AdminDisable(icbp);
}
}
FwIfInfo.NetbiosAccept = IpxIfInfop->NetbiosAccept;
FwIfInfo.NetbiosDeliver = IpxIfInfop->NetbiosDeliver;
FwSetInterface(icbp->InterfaceIndex, &FwIfInfo);
// set IPXWAN info changes
icbp->EnableIpxWanNegotiation = IpxwanIfInfop->AdminState;
// set static routes
if((tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_ROUTE_INFO_TYPE)) == NULL) {
// no static routes
// delete them if we've got them
if(GetStaticRoutesCount(icbp->InterfaceIndex)) {
DeleteAllStaticRoutes(icbp->InterfaceIndex);
}
}
else
{
// delete non-present ones and add new ones
NewStaticRtInfop = (PIPX_STATIC_ROUTE_INFO)GetInfoEntry(InterfaceInfop, IPX_STATIC_ROUTE_INFO_TYPE);
// Create static routes enumeration handle for this interface
EnumHandle = CreateStaticRoutesEnumHandle(icbp->InterfaceIndex);
if(UpdateStaticIfEntries(icbp,
EnumHandle,
sizeof(IPX_STATIC_ROUTE_INFO),
tocep->Count, // number of routes in the new info
NewStaticRtInfop,
GetNextStaticRoute,
DeleteStaticRoute,
CreateStaticRoute)) {
// Close the enumeration handle
CloseStaticRoutesEnumHandle(EnumHandle);
rc = ERROR_GEN_FAILURE;
goto UpdateFailure;
}
// Close the enumeration handle
CloseStaticRoutesEnumHandle(EnumHandle);
}
// set static services
if((tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_SERVICE_INFO_TYPE)) == NULL) {
// no static services
// delete them if we've got them
if(GetStaticServicesCount(icbp->InterfaceIndex)) {
DeleteAllStaticServices(icbp->InterfaceIndex);
}
}
else
{
// delete non-present ones and add new ones
NewStaticSvInfop = (PIPX_STATIC_SERVICE_INFO)GetInfoEntry(InterfaceInfop, IPX_STATIC_SERVICE_INFO_TYPE);
// Create static services enumeration handle for this interface
EnumHandle = CreateStaticServicesEnumHandle(icbp->InterfaceIndex);
if(UpdateStaticIfEntries(icbp,
EnumHandle,
sizeof(IPX_STATIC_SERVICE_INFO),
tocep->Count, // number of services in the new info
NewStaticSvInfop,
GetNextStaticService,
DeleteStaticService,
CreateStaticService)) {
// Close the enumeration handle
CloseStaticServicesEnumHandle(EnumHandle);
rc = ERROR_GEN_FAILURE;
goto UpdateFailure;
}
// Close the enumeration handle
CloseStaticServicesEnumHandle(EnumHandle);
}
// set static netbios names
if((tocep = GetTocEntry(InterfaceInfop, IPX_STATIC_NETBIOS_NAME_INFO_TYPE)) == NULL) {
// no static netbios names
FwSetStaticNetbiosNames(icbp->InterfaceIndex,
0,
NULL);
}
else
{
// set the new ones
StaticNbInfop = (PIPX_STATIC_NETBIOS_NAME_INFO)GetInfoEntry(InterfaceInfop,
IPX_STATIC_NETBIOS_NAME_INFO_TYPE);
FwSetStaticNetbiosNames(icbp->InterfaceIndex,
tocep->Count,
StaticNbInfop);
}
// Seed the traffic filters
if ((tocep = GetTocEntry(InterfaceInfop, IPX_IN_TRAFFIC_FILTER_INFO_TYPE))!=NULL) {
if ((InFltGlInfo = GetInfoEntry(InterfaceInfop, IPX_IN_TRAFFIC_FILTER_GLOBAL_INFO_TYPE)) == NULL) {
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &icbp->InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "SetInterface: Bad input filters config info");
goto UpdateFailure;
}
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND,
InFltGlInfo->FilterAction, // pass or don't pass
tocep->InfoSize, // filter size
(LPBYTE)InterfaceInfop+tocep->Offset,
tocep->InfoSize*tocep->Count) != NO_ERROR) {
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &icbp->InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "SetInterface: Bad input filters config info");
goto UpdateFailure;
}
}
else { // No Filters -> delete all
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_INBOUND, // in or outbound,
0, // pass or don't pass
0, // filter size
NULL,
0)!=NO_ERROR) {
Trace(INTERFACE_TRACE, "SetInterface: Could not delete input filters");
goto UpdateFailure;
}
}
if ((tocep = GetTocEntry(InterfaceInfop, IPX_OUT_TRAFFIC_FILTER_INFO_TYPE))!=NULL) {
if ((OutFltGlInfo = GetInfoEntry(InterfaceInfop, IPX_OUT_TRAFFIC_FILTER_GLOBAL_INFO_TYPE)) == NULL) {
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &icbp->InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "SetInterface: Bad output filters config info");
goto UpdateFailure;
}
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND,
OutFltGlInfo->FilterAction, // pass or don't pass
tocep->InfoSize, // filter size
(LPBYTE)InterfaceInfop+tocep->Offset,
tocep->InfoSize*tocep->Count) != NO_ERROR) {
IF_LOG (EVENTLOG_ERROR_TYPE) {
RouterLogErrorDataW (RMEventLogHdl,
ROUTERLOG_IPX_BAD_INTERFACE_CONFIG,
1, &icbp->InterfaceNamep, 0, NULL);
}
Trace(INTERFACE_TRACE, "SetInterface: Bad output filters config info");
goto UpdateFailure;
}
}
else { // No Filters -> delete all
if (SetFilters(icbp->InterfaceIndex,
IPX_TRAFFIC_FILTER_OUTBOUND, // in or outbound,
0, // pass or don't pass
0, // filter size
NULL,
0)!=NO_ERROR) {
Trace(INTERFACE_TRACE, "SetInterface: Could not delete output filters");
goto UpdateFailure;
}
}
RELEASE_DATABASE_LOCK;
return NO_ERROR;
UpdateFailure:
RELEASE_DATABASE_LOCK;
return rc;
}
/*++
Function: InterfaceNotReachable
Descr: Called in the following cases:
1. Following a ConnectInterface request from the Router Manager,
to indicate that the connection atempt has failed.
2. When DIM realizes it won't be able to execute any further
ConnectInterface requests because of out of resources.
--*/
DWORD
InterfaceNotReachable(
IN HANDLE InterfaceIndex,
IN UNREACHABILITY_REASON Reason)
{
PICB icbp;
Trace(INTERFACE_TRACE, "IpxRM: InterfaceNotReachable: Entered for if # %d\n",
InterfaceIndex);
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
RELEASE_DATABASE_LOCK;
return ERROR_CAN_NOT_COMPLETE;
}
if((icbp = GetInterfaceByIndex(PtrToUlong(InterfaceIndex))) == NULL) {
// interface has been removed
RELEASE_DATABASE_LOCK;
return ERROR_INVALID_PARAMETER;
}
if(icbp->ConnectionRequestPending) {
icbp->ConnectionRequestPending = FALSE;
// notify the forwarder of the connection failure
FwConnectionRequestFailed(icbp->InterfaceIndex);
}
// if there is reason to stop advertising routes/services on this if
// because it can't be reached in the future, do it!
if(icbp->InterfaceReachable)
{
icbp->InterfaceReachable = FALSE;
// stop advertising static routes on this interface
DisableStaticRoutes(icbp->InterfaceIndex);
// disable the interface for all routing prot and fw
// this will stop advertising any static services
ExternalDisableInterface(icbp->InterfaceIndex);
}
RELEASE_DATABASE_LOCK;
return NO_ERROR;
}
/*++
Function: InterfaceReachable
Descr: Called by DIM following a previous InterfaceNotReachable to
indicate that conditions are met to do connections on this if.
--*/
DWORD
InterfaceReachable(
IN HANDLE InterfaceIndex)
{
PICB icbp;
Trace(INTERFACE_TRACE, "IpxRM: InterfaceReachable: Entered for if # %d\n",
InterfaceIndex);
ACQUIRE_DATABASE_LOCK;
if(RouterOperState != OPER_STATE_UP) {
return ERROR_CAN_NOT_COMPLETE;
}
if((icbp = GetInterfaceByIndex(PtrToUlong(InterfaceIndex))) == NULL) {
// interface has been removed
RELEASE_DATABASE_LOCK;
return ERROR_INVALID_PARAMETER;
}
if(!icbp->InterfaceReachable) {
icbp->InterfaceReachable = TRUE;
if(icbp->AdminState == ADMIN_STATE_ENABLED) {
// enable all static routes for this interface
EnableStaticRoutes(icbp->InterfaceIndex);
// enable external interfaces. Implicitly, this will enable static services
// bound to this interface to be advertised
ExternalEnableInterface(icbp->InterfaceIndex);
}
}
RELEASE_DATABASE_LOCK;
return NO_ERROR;
}
DWORD APIENTRY
InterfaceConnected (
IN HANDLE hInterface,
IN PVOID pFilter,
IN PVOID pPppProjectionResult
) {
return NO_ERROR;
}
VOID
DestroyAllInterfaces(VOID)
{
PICB icbp;
while(!IsListEmpty(&IndexIfList)) {
icbp = CONTAINING_RECORD(IndexIfList.Flink, ICB, IndexListLinkage);
// remove the if from the data base
RemoveIfFromDB(icbp);
Trace(INTERFACE_TRACE, "DestroyAllInterfaces: destroyed interface %d\n", icbp->InterfaceIndex);
GlobalFree(icbp);
// decrement the interface counter
InterfaceCount--;
}
}