Check whether an rfs hardware filter may be removed
bool rps_may_expire_flow(struct net_device * dev, u16 rxq_index, u32 flow_id, u16 filter_id);
dev
Device on which the filter was set
rxq_index
RX queue index
flow_id
Flow ID passed to ndo_rx_flow_steer
filter_id
Filter ID returned by ndo_rx_flow_steer
Drivers that implement ndo_rx_flow_steer should periodically call this function for each installed filter and remove the filters for which it returns true.