/*
* --------------------------------------------------------------------------
* Implements filter driver's FilterNetPnPEvent function.
* --------------------------------------------------------------------------
*/
NDIS_STATUS
OvsExtNetPnPEvent(NDIS_HANDLE filterModuleContext,
PNET_PNP_EVENT_NOTIFICATION netPnPEvent)
{
NDIS_STATUS status = NDIS_STATUS_SUCCESS;
POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext;
OVS_LOG_TRACE("Enter: filterModuleContext: %p, NetEvent: %d",
filterModuleContext, (netPnPEvent->NetPnPEvent).NetEvent);
/*
* The only interesting event is the NetEventSwitchActivate. It provides
* an asynchronous notification of the switch completing activation.
*/
if (netPnPEvent->NetPnPEvent.NetEvent == NetEventSwitchActivate) {
ASSERT(switchContext->isActivated == FALSE);
if (switchContext->isActivated == FALSE) {
status = OvsActivateSwitch(switchContext);
OVS_LOG_TRACE("OvsExtNetPnPEvent: activated switch: %p "
"status: %s", switchContext,
status ? "TRUE" : "FALSE");
}
}
if (netPnPEvent->NetPnPEvent.NetEvent == NetEventFilterPreDetach) {
switchContext->dataFlowState = OvsSwitchPaused;
KeMemoryBarrier();
}
status = NdisFNetPnPEvent(switchContext->NdisFilterHandle,
netPnPEvent);
OVS_LOG_TRACE("Exit: OvsExtNetPnPEvent");
return status;
}
/*
* --------------------------------------------------------------------------
* Implements filter driver's FilterRestart function.
* --------------------------------------------------------------------------
*/
_Use_decl_annotations_
NDIS_STATUS
OvsExtRestart(NDIS_HANDLE filterModuleContext,
PNDIS_FILTER_RESTART_PARAMETERS filterRestartParameters)
{
POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext;
NDIS_STATUS status = NDIS_STATUS_SUCCESS;
BOOLEAN switchActive;
UNREFERENCED_PARAMETER(filterRestartParameters);
OVS_LOG_TRACE("Enter: filterModuleContext %p",
filterModuleContext);
/* Activate the switch if this is the first restart. */
if (!switchContext->isActivated && !switchContext->isActivateFailed) {
status = OvsQuerySwitchActivationComplete(switchContext,
&switchActive);
if (status != NDIS_STATUS_SUCCESS) {
switchContext->isActivateFailed = TRUE;
status = NDIS_STATUS_RESOURCES;
goto cleanup;
}
if (switchActive) {
status = OvsActivateSwitch(switchContext);
if (status != NDIS_STATUS_SUCCESS) {
OVS_LOG_WARN("Failed to activate switch, dpNo:%d",
switchContext->dpNo);
status = NDIS_STATUS_RESOURCES;
goto cleanup;
}
}
}
ASSERT(switchContext->dataFlowState == OvsSwitchPaused);
switchContext->dataFlowState = OvsSwitchRunning;
cleanup:
OVS_LOG_TRACE("Exit: Restart switch:%p, dpNo: %d, status: %#x",
switchContext, switchContext->dpNo, status);
return status;
}
/*
* --------------------------------------------------------------------------
* Implements filter driver's FilterNetPnPEvent function.
* --------------------------------------------------------------------------
*/
NDIS_STATUS
OvsExtNetPnPEvent(NDIS_HANDLE filterModuleContext,
PNET_PNP_EVENT_NOTIFICATION netPnPEvent)
{
NDIS_STATUS status = NDIS_STATUS_SUCCESS;
POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext;
BOOLEAN switchActive;
OVS_LOG_TRACE("Enter: filterModuleContext: %p, NetEvent: %d",
filterModuleContext, (netPnPEvent->NetPnPEvent).NetEvent);
/*
* The only interesting event is the NetEventSwitchActivate. It provides
* an asynchronous notification of the switch completing activation.
*/
if (netPnPEvent->NetPnPEvent.NetEvent == NetEventSwitchActivate) {
status = OvsQuerySwitchActivationComplete(switchContext, &switchActive);
if (status != NDIS_STATUS_SUCCESS) {
switchContext->isActivateFailed = TRUE;
} else {
ASSERT(switchContext->isActivated == FALSE);
ASSERT(switchActive == TRUE);
if (switchContext->isActivated == FALSE && switchActive == TRUE) {
status = OvsActivateSwitch(switchContext);
OVS_LOG_TRACE("OvsExtNetPnPEvent: activated switch: %p "
"status: %s", switchContext,
status ? "TRUE" : "FALSE");
}
}
}
if (status == NDIS_STATUS_SUCCESS) {
status = NdisFNetPnPEvent(switchContext->NdisFilterHandle,
netPnPEvent);
}
OVS_LOG_TRACE("Exit: OvsExtNetPnPEvent");
return status;
}
