[ovs-dev] [PATCH 3/4] OVN: Add ovn-northd IGMP support

[Ben Pfaff]

On Tue, Jul 02, 2019 at 09:07:58AM +0200, Dumitru Ceara wrote:
> New IP Multicast Snooping Options are added to the Northbound DB
> Logical_Switch:other_config column. These allow enabling IGMP snooping and
> querier on the logical switch and get translated by ovn-northd to rows in
> the IP_Multicast Southbound DB table.
> 
> ovn-northd monitors for changes done by ovn-controllers in the Southbound DB
> IGMP_Group table. Based on the entries in IGMP_Group ovn-northd creates
> Multicast_Group entries in the Southbound DB, one per IGMP_Group address X,
> containing the list of logical switch ports (aggregated from all controllers)
> that have IGMP_Group entries for that datapath and address X. ovn-northd
> also creates a logical flow that matches on IP multicast traffic destined
> to address X and outputs it on the tunnel key of the corresponding
> Multicast_Group entry.
> 
> Signed-off-by: Dumitru Ceara <dceara at redhat.com>

Seems reasonable at first glance, I'll do a more thorough review in a
later version.

I noticed a typo in the documentation: s/wether/whether/