Re: [PATCH 6/6] openvswitch: Support VXLAN Group Policy extension

On Tue, Jan 6, 2015 at 6:05 PM, Thomas Graf [off-list ref] wrote:

The group policy metadata is handled in the same way as Geneve options
and transported as binary blob in a new Netlink attribute
OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS which is mutually exclusive to the
existing OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS.

Can you explain some more what the encoding would look like if
additional options were defined (including ones that are potentially
mutually exclusive)? The Geneve options are binary but that is coming
directly from the protocol specification. However, this isn't an on
the wire format so I'm not sure what it would look like or how it
would be defined to avoid conflict and allow evolution.