OpenFlow Spec 1.5 introduces new instruction OFPIT_STAT_TRIGGER
to define a set of statistics thresholds using OXS (EXT-335).
This patch adds OFPIT_STAT_TRIGGER instruction support.
Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>