From: Numan Siddique <[email protected]>
This patch series optimizes the load balancer hairpin logical flows.
Presently, ovn-northd generates a lot of these logical flows.
Suppose there are 'm' load balancers associated to a logical switch and each
load balancer
has 'n' VIPs and each VIP has 'p' backends then ovn-northd adds (m * ((n * p) +
n))
hairpin logical flows.
With this patch series, ovn-northd adds just 5 hairpin logical flows.
To reduce the number of lflows, load balancer information is now pushed
to the Southbound database using a new 'Load_Balancer' table.
ovn-controller programs the OF flows required for handling the load
balancer hairpin traffic directly and new OVN actions are added to
abstract the hairpining from ovn-northd.
v1 -> v2
-----
* Addressed the review comments from Mark Michelson.
* Added 2 more patches to the series to have SB Load balancer support
ovn-detrace and 'ovn-sbctl --vflows' as pointed by Dumitru Ceara.
Numan Siddique (7):
Add new table Load_Balancer in Southbound database.
northd: Refactor load balancer vip parsing.
controller: Add load balancer hairpin OF flows.
actions: Add new actions chk_lb_hairpin, chk_lb_hairpin_reply and
ct_snat_to_vip.
northd: Make use of new hairpin actions.
ovn-detrace: Add SB Load Balancer cookier handler.
sbctl: Add Load Balancer support for vflows option.
controller/lflow.c | 256 +++++++++++++++
controller/lflow.h | 6 +-
controller/ovn-controller.c | 27 +-
include/ovn/actions.h | 15 +-
include/ovn/logical-fields.h | 3 +
lib/actions.c | 116 ++++++-
lib/automake.mk | 4 +-
lib/lb.c | 236 ++++++++++++++
lib/lb.h | 77 +++++
lib/ovn-util.c | 28 ++
lib/ovn-util.h | 2 +
northd/ovn-northd.8.xml | 65 +++-
northd/ovn-northd.c | 586 ++++++++++++++---------------------
ovn-sb.ovsschema | 27 +-
ovn-sb.xml | 82 +++++
tests/ovn-northd.at | 109 ++++++-
tests/ovn.at | 544 ++++++++++++++++++++++++++++++--
tests/test-ovn.c | 3 +
utilities/ovn-detrace.in | 11 +-
utilities/ovn-sbctl.c | 58 ++++
utilities/ovn-trace.c | 65 +++-
21 files changed, 1892 insertions(+), 428 deletions(-)
create mode 100644 lib/lb.c
create mode 100644 lib/lb.h
--
2.26.2
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