ofproto-dpif-upcall: Wait for valid hw flow stats before applying min-revalidate-pps.

Depending on the driver implementation, it can take from 0.2 seconds
up to 2 seconds before offloaded flow statistics are updated. This is
true for both TC and rte_flow-based offloading. This is causing a
problem with min-revalidate-pps, as old statistic values are used
during this period.

This fix will wait for at least 2 seconds, by default, before assuming no
packets where received during this period.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

0 files changed, 0 insertions, 0 deletions