Comment 23 for bug 1572397

Reviewed: https://review.opencontrail.org/40943
Committed: http://github.com/Juniper/contrail-vrouter/commit/b04b55134f70ee19448989c70e9ca66831176ebb
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit b04b55134f70ee19448989c70e9ca66831176ebb
Author: Divakar <email address hidden>
Date: Fri May 27 15:58:31 2016 +0530

Keeping the mirror metadata entry in Flow entry

Currently mirror metadata is stored in index table using flow index
as key. Before the Flow eviction, the addition and deletion of this meta
data to Index table is always from Agent and hence no parallel
manipulation of Index table. After eviction, the metadata deletion from
index table can happen in parallel and hence leading to memory
corruption/leak in index table manipulation.

The right fix is making the index table SMP ready. As a stop gap fix,
the mirror metada data pointer is stored in the flow entry itself
directly.

Conflicts:
 include/vr_flow.h

closes-bug: #1572397, #1744369
Change-Id: I216d8b6c55025a6053b808fd2807338265b307e0