NdisMCmAddPartyComplete macro (ndis.h)

NdisMCmAddPartyComplete returns the final status of a client's request, for which the MCM driver previously returned NDIS_STATUS_PENDING, to add a party on an established multipoint VC.


void NdisMCmAddPartyComplete(



Specifies the final status of the MCM driver's add-party operation, either NDIS_STATUS_SUCCESS or any NDIS_STATUS_XXXexcept NDIS_STATUS_PENDING.


Specifies the handle identifying the party. The MCM driver obtained this handle as input parameter to its ProtocolCmAddParty function.


Specifies the handle to a caller-allocated resident context area in which the MCM driver will maintain party-specific state information if the add-party operation succeeded. Otherwise, this parameter can be NULL because it is ignored by NDIS if Status is anything other than NDIS_STATUS_SUCCESS.


Pointer to a structure of type CO_CALL_PARAMETERS that contains the call parameters, originally supplied by the client, for the party to be added.

Return value



If an MCM driver's ProtocolCmAddParty function returns NDIS_STATUS_PENDING, the driver must call NdisMCmAddPartyComplete subsequently to notify the client and NDIS that its attempt to add a party on the multipoint VC has completed, whether successfully or with an MCM driver-determined error status.

The underlying network medium determines whether a client can specify per-party traffic parameters on a multipoint VC.

If the underlying network medium does not support per-party traffic parameters on multipoint VCs, an MCM driver can do one of the following whenever a client attempts to add a party with a specification at CallParameters that does not match the already established traffic parameters for that VC:

  • Reset the traffic parameters to those already established for the multipoint VC when it successfully adds the party on that VC.
  • Change the traffic parameters for every party already on the VC when it successfully adds the new party.
  • Reject the request to add a new party. (This alternative implicitly forces clients to set up their traffic parameters for a multipoint VC with NdisClMakeCall and to specify the same traffic parameters at each subsequent call to NdisClAddParty for the given multipoint VC.)
If the MCM driver sets Status to NDIS_STATUS_SUCCESS, it must supply an explicit handle, which is usually a pointer to the driver-allocated per-party state area, as CallMgrPartyContext when it calls NdisMCmAddPartyComplete.

A call to NdisMCmAddPartyComplete causes NDIS to call the client's ProtocolClAddPartyComplete function.

Only connection-oriented miniport drivers that provide integrated call-management support can call NdisMCmAddPartyComplete. Stand-alone call managers, which register themselves with NDIS as protocol drivers, call NdisCmAddPartyComplete instead.


Minimum supported client Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisMCmAddPartyComplete (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisMCmAddPartyComplete (NDIS 5.1)) in Windows XP.
Target Platform Desktop
Header ndis.h (include Ndis.h)
DDI compliance rules Irql_MCM_Function(ndis)

See also