[ovs-dev] [PATCH v2 ovn 0/5] introduce BFD support in ovn-controller

[Lorenzo Bianconi]

Introduce BFD protocol in ovn-controller according to RFC5880 [0]
We added BFD implementation in ovn since layered protocols usually request to
enable it on ovn entities (e.g. logical router ports) while ovs implementation
relies on physical entities (e.g. ovs interfaces).
Moreover we would establish a BFD session between a given ovn-port and
multiple peers (1:n relation). A typical use-case is reported in [1].
In the current implementation Asynchronous mode is fully supported, while Demand
mode is supported only on rx side.

[0] - https://tools.ietf.org/html/rfc5880
[1] - https://bugzilla.redhat.com/show_bug.cgi?id=1847570

Changes since v1:
- rebase ontop of ovn master
- rename handle_bfd_msg action in handle_bfd_msg()
- add ovn-northd unit-tests
- improve commit logs
- remove global BFD control check
- introduce BFD support for ovn static routes

Lorenzo Bianconi (5):
  controller: introduce BFD tx path in ovn-controller
  action: introduce handle_bfd_msg() action
  controller: bfd: introduce BFD state machine
  bfp: support demand mode on rx side
  ovn: integrate bfd for static routes

 NEWS                        |   3 +
 controller/ovn-controller.c |   1 +
 controller/pinctrl.c        | 600 +++++++++++++++++++++++++++++++++++-
 controller/pinctrl.h        |   2 +
 include/ovn/actions.h       |   7 +
 lib/actions.c               |  27 ++
 lib/ovn-l7.h                |  19 ++
 northd/ovn-northd.8.xml     |  21 ++
 northd/ovn-northd.c         | 229 +++++++++++++-
 ovn-nb.ovsschema            |  20 +-
 ovn-nb.xml                  |  62 ++++
 ovn-sb.ovsschema            |  24 +-
 ovn-sb.xml                  |  74 +++++
 tests/atlocal.in            |   3 +
 tests/ovn-nbctl.at          |   5 +-
 tests/ovn-northd.at         |  31 ++
 tests/ovn.at                |   4 +
 tests/system-ovn.at         | 110 +++++++
 utilities/ovn-nbctl.8.xml   |   6 +
 utilities/ovn-nbctl.c       |  18 +-
 utilities/ovn-trace.c       |   2 +
 21 files changed, 1240 insertions(+), 28 deletions(-)

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2.29.2