[ovs-dev] [PATCH v5 ovn 0/3] Add rate limiting support for controller_events

[Lorenzo Bianconi]

Introduce the capability to associate a meter to each controller event
type in order to not overload the pinctrl thread under heavy load.
For each event type we need to define a naming convention for the related
meter:
- empty_lb_backends: event-elb

Changes since v4:
- rebase ontop of current ovn master branch
- fold patch 1/3: northd: introduce build_empty_lb_event_flow routine
Changes since v3:
- rebase on top of 'add empty_lb controller_event for logical router pipeline'
  https://patchwork.ozlabs.org/cover/1153918/
- update documentation
- added a unit test for the meter option in the "action parsing"
Changes since v2:
- fold patch 'Repair memory leak for OVN controller events'
- fix memory leak of meter string
Changes since v1:
- fix subject

Lorenzo Bianconi (3):
  northd: introduce build_empty_lb_event_flow routine
  add meter support to trigger_event action
  northd: add rate limiting support for SB controller events

 include/ovn/actions.h   |   1 +
 lib/actions.c           |  43 ++++++++++++++---
 northd/ovn-northd.8.xml |   5 ++
 northd/ovn-northd.c     | 102 +++++++++++++++++++++++++++-------------
 ovn-nb.xml              |   8 ++++
 ovn-sb.xml              |   5 +-
 tests/ovn.at            |   5 ++
 7 files changed, 130 insertions(+), 39 deletions(-)

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2.21.0