OID_TAPI_GET_DEV_CONFIG
The OID_TAPI_GET_DEV_CONFIG OID requests the miniport driver to return the current configuration of a device associated one-to-one with a particular line.
Support for this request is mandatory.
This request uses an NDIS_TAPI_GET_DEV_CONFIG structure, defined as follows:
typedef struct _NDIS_TAPI_GET_DEV_CONFIG {
IN ULONG ulRequestID;
IN ULONG ulDeviceID;
IN ULONG ulDeviceClassSize;
IN ULONG ulDeviceClassOffset;
OUT VAR_STRING DeviceConfig;
} NDIS_TAPI_GET_DEV_CONFIG, *PNDIS_TAPI_GET_DEV_CONFIG;
The members of this structure contain the following information:
ulRequestID
Reserved.ulDeviceID
Specifies the line device to be queried. This value was set up in a preceding OID_TAPI_PROVIDER_INITIALIZE request.ulDeviceClassSize
Specifies the number of bytes in the device-class string.ulDeviceClassOffset
Specifies the offset in bytes to the null-terminated, variable-size counted string specifying the class of the device whose configuration is requested. Valid device class strings are the same as those specified for the OID_TAPI_GET_ID request when it is applied to a "line" device ( ulSelect has the value LINECALLSELECT_LINE).DeviceConfig
Specifies the virtual address of a structure of type VAR_STRING to contain the device configuration information for the associated device.The ulStringFormat member of the VAR_STRING structure must be set to STRINGFORMAT_BINARY.
The miniport driver fills this structure with the device configuration information to complete this request successfully.
In general, the contents of the NDIS_TAPI_GET_DEV_CONFIG structure are specific to the NIC driver's line and the device class.
The MiniportQueryInformationfunction can return one of the following:
NDIS_STATUS_SUCCESS
NNDIS_STATUS_TAPI_INVALDEVICECLASS
NDIS_STATUS_TAPI_STRUCTURETOOSMALL
NDIS_STATUS_TAPI_NODRIVER
NDIS_STATUS_TAPI_RESOURCEUNAVAIL
NDIS_STATUS_FAILURE