[ovs-dev] Question about metadata matching

Junguk Cho jmanbal at gmail.com
Tue Aug 26 21:23:46 UTC 2014

What I thought is to generally use metadata as matching rule in datapath.
It is not just between tables.


2014-08-26 15:15 GMT-06:00 Ben Pfaff <blp at nicira.com>:

> On Tue, Aug 26, 2014 at 03:14:10PM -0600, Junguk Cho wrote:
> > But, it is in "struct flow" in lib/flow.h.
> > It is not from "struct sw_flow_key" in /datapath/flow.h.
> >
> > I assume metadata is used in action in datapath.
> metadata is not a datapath concept.  There is no need for it to be a
> datapath concept.
> Please explain a specific case in which you think that the datapath
> would need to know about metadata, then I will explain why it does
> not.

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