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ofproto-dpif: Don't slow-path controller actions.
Controller actions have become more commonly used for purposes other than just making forwarding decisions (e.g., packet logging). A packet that needs to be copied to the controller and forwarded would always be sent to ovs-vswitchd to be handled, which could negatively affect performance and cause heavier CPU utilization in ovs-vswitchd. This commit changes the behavior so that OpenFlow controller actions become userspace datapath actions while continuing to let packet forwarding and manipulation continue to be handled by the datapath directly. This patch still slow-paths controller actions with the "pause" flag set. A future patch will stop slow-pathing these pause actions as well. Signed-off-by: Justin Pettit <jpettit@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
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