[ovs-discuss] Flow synchronizing between user space to kernel space

[Joe Stringer]

On 14 November 2016 at 23:35, Naveen M <77naveen77 at gmail.com> wrote:
> Hi all,
>
> I'm newbie to openvswitch. Currently i'm walk-throwing the
> openvswitch(2.5.0) code about flow synchronization between userspace to
> kernelspace.
>
> I have few doubts on synchronization mechanism. In user space revalidator
> thread is maintaining the synchronization.
>
> 1.Is this must for UFID in every flow?

UFID stands for Unique Flow IDentifier. Each datapath flow has one.

> 2.While inserting the flow i didn't found anywhere where the UFID is
> created. May i know where its created?

It's generated using dpif_flow_hash().