Upcalls are sent/received between kernel and user space over Netlink protocol using the dpif interface.
Monica From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of kevin parrikar Sent: Thursday, March 31, 2016 11:28 PM To: discuss@openvswitch.org Subject: [ovs-discuss] communication between datapath and vswitchd hi i was going through different articles about openvswitch and one question came into my mind. i read that for packets with no cached flow packets will be send to user space to generate flow ,Is it achieved through some internal interfaces between Kernal module and user space (similar to loop back) or through any other mechanism (may be memory copy?).Please help me understand this better. Regards, Kevin
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