[ovs-dev] [PATCH] ovn-controller: Add datapath-type in chassis:external_ids

Ben Pfaff blp at ovn.org
Thu Jul 28 16:58:30 UTC 2016


On Thu, Jul 28, 2016 at 08:05:20PM +0530, Numan Siddique wrote:
> This patch reads the external_ids:datapath-type value from the
> Open_vSwitch table if defined and sets it in the external_ids:datapath-type
> of Chassis table.

What sets external_ids:datapath-type?  It isn't documented anywhere.

> This will provide hints to the CMS or clients monitoring OVN SB DB to
> determine the datapath type (DPDK or non-DPDK) configured and take some
> actions based on it.
> 
> One usecase is, OVN neutron plugin can use this information to set the
> vif_type (ovs or vhostuser) during the port binding.

Why would neutron need this information?  What does it use it for?



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