[ovs-discuss] question about facet and subfacet in the code

[Feixiong Zhang]

thanks a lot, Justin! It makes lots of sense.


On Fri, Jul 12, 2013 at 2:39 AM, Justin Pettit <jpettit at nicira.com> wrote:

> On Jul 11, 2013, at 1:59 PM, Feixiong Zhang <feixiong at winlab.rutgers.edu>
> wrote:
>
> > thanks, Justin. Guess I will go for a newer version. Just want to make
> it clear that in master, facet actually is based on exact match of all
> fields, same as subfacet?
>
> No, in master, a facet will contain as many wildcards as it can based on
> the configuration of the switch.  The subfacet will contain an exact match
> entry with a set of wildcards, and this is what's sent down to the
> datapath.  If the datapath supports the wildcards, then no more flows that
> match the facet should make it up to userspace.  If the datapath doesn't,
> then more exact-match subfacets will be created for the new flows as childs
> of the matching facet.
>
> --Justin
>
>
>
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