Comment 49 for bug 1781402

Reviewed: https://review.opencontrail.org/45600
Committed: http://github.com/Juniper/contrail-vrouter/commit/b09e7384f19d02e19c74c9973e94db8ab8b81b91
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit b09e7384f19d02e19c74c9973e94db8ab8b81b91
Author: Trevor Patrie <email address hidden>
Date: Tue Nov 15 11:39:52 2016 -0500

dp_core: Introduce offloads module

Smart nics may have ability to parse and act the Vrouter tunneled packets.

So, according to the Vrouter tunnels, aka MPLSoGRE, MPLSoUDP, and VXLAN, the
inner packet 5-tupples and the outer packet specifications, the HW can do
some actions. For example, the HW can detect MPLSoGRE packets and to do RSS
on the inner packet 5-tupples or just tag the packets based on the packet HW parser.

Using this HW feature the Vrouter parformance can be improved.

Add a Vrouter offloads module to use the described HW ability.

Partial-Bug: #1781402
Change-Id: I337dd1d25671271528be00a5fef2eebddf1b0292
Signed-off-by: matan <email address hidden>