From: Numan Siddique <num...@ovn.org> 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. v3 -> v4 ---- * Addressed review comments from Dumitru which was missed out in v3. * Separate lb structures for northd and ovn-controller in lib/lb.c. * Incorporated Dumitru's code suggestions in patch 1 for syncing the NB load balancer to SB load balancer. v2 -> v3 ---- * Addressed most of the review comments from Dumitru. * Modified the test cases to make use of the newly added helper test functions. 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 | 234 +++++++++++++++ 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 | 348 ++++++++++++++++++++++ lib/lb.h | 105 +++++++ northd/ovn-northd.8.xml | 65 +++-- northd/ovn-northd.c | 538 +++++++++++++---------------------- ovn-sb.ovsschema | 27 +- ovn-sb.xml | 82 ++++++ tests/ovn-northd.at | 115 +++++++- tests/ovn.at | 510 ++++++++++++++++++++++++++++++++- tests/test-ovn.c | 3 + utilities/ovn-detrace.in | 11 +- utilities/ovn-sbctl.c | 59 ++++ utilities/ovn-trace.c | 65 ++++- 19 files changed, 1937 insertions(+), 396 deletions(-) create mode 100644 lib/lb.c create mode 100644 lib/lb.h -- 2.28.0 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev