This patchset comes from an attempt to improve the ConnTracker
performance in OvS-DPDK when used as a firewall.
We focused on some aspects like the management of recirculated packets
and some function tuning.
Some of this changes may be a benefit also for cases other than the
connection tracker firewall, eg in usecases where there's more than
one recirculation.

    Added coverletter.
    Re-ordered patches. As "Skip EMC lookup.." is
    the main change, now it is the 1st in the series.
    Rebased, measurements updated.
    Patch "move pkt metadata init out..." is removed
    because it was not adding the same benefit with
    the latest head of master .
    Added comments to "Use memcpy on dp_packet.."

    Re-worked to address feedback/comments on the list.
    Added patch "move pkt metadata init out..."

    first implementation.

Fischetti, Antonio (4):
  dpif-netdev: Skip EMC lookup/insert for recirc packets
  dpif-netdev: Avoid reading RSS hash when EMC is disabled
  conntrack: pass current time to conntrack_execute.
  dp-packet: Use memcpy on dp_packet elements.

 lib/conntrack.c        |  4 +--
 lib/conntrack.h        |  3 +-
 lib/dp-packet.c        | 18 +++++------
 lib/dp-packet.h        |  6 +++-
 lib/dpif-netdev.c      | 87 ++++++++++++++++++++++++++++++++++++++++++++++----
 tests/test-conntrack.c |  8 +++--
 6 files changed, 104 insertions(+), 22 deletions(-)


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