FWPS_VSWITCH_PORT_EVENT_CALLBACK0 callback function

The filter engine calls the vSwitchPortEventNotifyFn (FWPS_VSWITCH_PORT_EVENT_CALLBACK0) callout function to notify the callout driver about events that are associated a virtual switch (vSwitch) port.

Note  FWPS_VSWITCH_PORT_EVENT_CALLBACK0 is a specific version of FWPS_VSWITCH_PORT_EVENT_CALLBACK. See WFP Version-Independent Names and Targeting Specific Versions of Windows for more information.
 

Syntax


FWPS_VSWITCH_PORT_EVENT_CALLBACK0 vSwitchPortEventNotifyFn;

NTSTATUS NTAPI vSwitchPortEventNotifyFn(
  _In_opt_       void                        *notifyContext,
  _In_            void                       *completionContext,
  _In_           FWPS_VSWITCH_EVENT_TYPE     eventType,
  _In_     const  NDIS_SWITCH_PARAMETERS     *vSwitch,
  _In_     const NDIS_SWITCH_PORT_PARAMETERS *vSwitchPort
)
{ ... }

Parameters

notifyContext [in, optional]

A pointer to a context provided by the callout driver. The driver passed this pointer to the notifyContext parameter of the FwpsvSwitchEventsSubscribe0 function. This parameter is optional and can be NULL.

completionContext [in]

A pointer to a completion context provided by the callout driver. This parameter is optional and can be NULL.

eventType [in]

The type of virtual switch vSwitch event specified as one of the FWPS_VSWITCH_EVENT_TYPE enumeration values. For more information, see Remarks.

vSwitch [in]

A pointer to an NDIS_SWITCH_PARAMETERS structure that contains information about a virtual switch.

Note  The information in the NDIS_SWITCH_PARAMETERS structure reflects the initial state of the virtual switch, not necessarily its current state. In particular, the NumSwitchPorts and IsActive members might still have their initial value of zero, unless a virtual switch PnP event has been triggered. Current state information can be found in the other parameters to this callback function.
 
vSwitchPort [in]

A pointer to an NDIS_SWITCH_PORT_PARAMETERS structure that contains parameters for a port on a vSwitch.

Return value

A callout's FWPS_VSWITCH_PORT_EVENT_CALLBACK0 function returns one of the following NTSTATUS codes.

Return codeDescription
STATUS_SUCCESS

The callout driver accepts the notification from the filter engine.

STATUS_PENDING

The operation is pending and will be completed later. The callout driver will call the FwpsvSwitchNotifyComplete0 function to complete the pending operation.

Other status codes

An error occurred.

 

Remarks

A callout driver registers a vSwitchPortEventNotifyFn function by calling the FwpsvSwitchEventsSubscribe0 function.

If the vSwitchPortEventNotifyFn callback is registered, the callout driver receives notifications for port creation and deletion.

If the eventType parameter is set to FWPS_VSWITCH_EVENT_PORT_CREATE, a vSwitch port was created. In this case, the vSwitch parameter identifies an NDIS_SWITCH_PARAMETERS structure that contains information about the virtual switch (vSwitch) and the NDIS_SWITCH_PORT_PARAMETERS parameter contains information about the port.

A callout can return STATUS_PENDING from vSwitchPortEventNotifyFn. In this case, the callout driver calls the FwpsvSwitchNotifyComplete0 function to complete the pending operation.

After the port is deleted, the WFP filter driver calls vSwitchPortEventNotifyFn with FWPS_VSWITCH_EVENT_PORT_DELETE set in the eventType parameter.

Requirements

Version

Available starting with Windows 8.

Header

Fwpsk.h (include Fwpsk.h)

IRQL

<= DISPATCH_LEVEL

See also

FWPS_VSWITCH_EVENT_TYPE
FwpsvSwitchEventsSubscribe0
FwpsvSwitchNotifyComplete0
NDIS_SWITCH_PARAMETERS
NDIS_SWITCH_PORT_PARAMETERS
Callout Driver Callout Functions

 

 

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