[ovs-git] Open vSwitch: Change sFlow model to reflect per-bridge sampling (branch-1.10)

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- Log -----------------------------------------------------------------
commit df5256dd98fe880a7773eb485ac441188c58b9a3
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=df5256dd98fe880a7773eb485ac441188c58b9a3
Author: Neil Mckee <neil.mckee at inmon.com>
		
Change sFlow model to reflect per-bridge sampling
		
Until now, we were presenting a separate sFlow data-source (sampler) for
each ifIndex-interface.  This caused problems with samples that did not
easily map to an ifIndex being aliased together and breaking the sFlow
containment rules.  This patch changes the model to present a single sFlow
data-source for each bridge.  Now we can still make all reasonable effort
to map packet samples to ingress/egress ifIndex numbers, knowing that the
fallback to "unknown" does not break the sFlow model.  Note that
interface-counter-polling is still handled the same way as before, with
sFlow counter-polling data only being exported for ifIndex-interfaces.

Signed-off-by: Neil Mckee <neil.mckee at inmon.com>
Signed-off-by: Ben Pfaff <blp at nicira.com>


-----------------------------------------------------------------------

Summary of changes:
 lib/sflow.h                  |    7 ++++
 ofproto/ofproto-dpif-sflow.c |   80 ++++++++++++++++++++---------------------
 ofproto/ofproto-dpif.c       |    6 +++-
 ofproto/tunnel.c             |    1 -
 4 files changed, 51 insertions(+), 43 deletions(-)


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