This patch implements periodic querying of cfa flow stats
in batches to compute the 'lastused' attribute of TC flow stats.
Signed-off-by: NSathya Perla <sathya.perla@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>