On 6/2/22 04:08, Han Zhou wrote:
> On Wed, Jun 1, 2022 at 11:44 AM Mark Michelson <[email protected]> wrote:
>>
>> On 6/1/22 13:44, Numan Siddique wrote:
>>> On Wed, Jun 1, 2022 at 12:52 PM Mark Michelson <[email protected]>
> wrote:
>>>>
>>>> Thanks Dumitru. This looks good to me.
>>>>
>>>> Acked-by: Mark Michelson <[email protected]>
>>>
>>> Thanks Dumitru.
>>> I applied this patch to main and branch-22.06.
>>>
>>> Looks like it's not applying cleanly to branch-22.03.
>>>
>>> Numan
>>
>> I pushed the changes to 21.12 and 22.03.
>>
> Sorry that I just noticed this change. The original ct_lb_mark change
> didn't consider the order that ovn-northd upgrades before ovn-controller.
> However, I think this change would cause another problem for this upgrade
> order.

You're right, I forgot about this case.

> Due to the direct usage of ct.label (rather than through an ovn action from
> logical flows) in ovn-controller generated LB hair-pin flows, there was
> already a compatibility issue between ovn-northd and ovn-controller during
> upgrade (pointed out by Numan during code review of the ct_lb_mark change),
> and that patch took care of the incompatibility by checking ovn-northd
> version string in ovn-controller:
> 
> static bool
> get_check_ct_label_for_lb_hairpin(const char *northd_internal_ver)
> {
>     unsigned int minor =
> ovn_parse_internal_version_minor(northd_internal_ver);
>     return (minor <= 3);
> }
> 
> With this check, ovn-controller will decide to use ct.label or ct.mark for
> the LB hair-pin flows according to ovn-northd version, with the assumption
> that ovn-controller is upgraded before ovn-northd. But it didn't support
> the use case when ovn-northd is upgraded first.
> Now with this change, if ovn-northd is upgraded before ovn-controller, any
> upgraded ovn-controller would expect the new ovn-northd using the
> ct_lb_mark, which would be a problem for the hair-pin flows until all the
> ovn-controllers are upgraded.

Sure but before the patch any ovn-northd-before-ovn-controller upgrade
would have broken all load balancer use cases.  Now we handle most of
the traffic patterns, except hairpin.

I'm working on a patch to handle the hairpin case when ovn-northd is
upgraded before all ovn-controllers are upgraded.

While doing that I also noticed we need to use a similar approach for
ct_mark.blocked and ct_mark.ecmp_reply_port.

I'll post a series to cover all this.

> 
> Thanks,
> Han

Thanks,
Dumitru

>>>
>>>
>>>
>>>>
>>>> On 6/1/22 10:36, Dumitru Ceara wrote:
>>>>> Commit a075230e4a0f ("Use ct_mark for masked access to make flows
>>>>> HW-offloading friendly.") started using the ct_lb_mark action instead
> of
>>>>> ct_lb.  In usual scenarios this new feature would be picked up when
> the
>>>>> next stable release becomes available (i.e., 22.06.0).  However, the
>>>>> commit was also backported to stable branches (branch-22.03 and
>>>>> branch-21.12).
>>>>>
>>>>> While the supported upgrade scenario for OVN when moving to a new
>>>>> stable release is to ensure that ovn-controllers are upgraded first,
>>>>> it's not really clear that this restriction applies to "z-stream"
>>>>> upgrades too (e.g., from v21.12.1 to v21.12.2).
>>>>>
>>>>> Some CMSs, like RHEV (Red Hat Virtualization), expect ovn-controllers
>>>>> running older code from a stable branch to be able to interpret all
>>>>> Southbound contents generated by ovn-northd instances built from the
>>>>> same or newer versions of the stable branch.
>>>>>
>>>>> Ensure that ct_lb_mark is used only when all chassis registered in the
>>>>> Southbound support it.
>>>>>
>>>>> Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=2091565
>>>>> Signed-off-by: Dumitru Ceara <[email protected]>
>>>>> ---
>>>>> NOTE: If accepted, this patch should be backported to branch-22.03 and
>>>>> branch-21.12.  The alternative is to revert a075230e4a0f and its
>>>>> dependents from all stable branches.
>>>>> ---
>>>>>    controller/chassis.c   |   6 +++
>>>>>    include/ovn/features.h |   1 +
>>>>>    northd/en-lflow.c      |   1 +
>>>>>    northd/northd.c        | 112
> ++++++++++++++++++++++++++++-------------
>>>>>    northd/northd.h        |   6 +++
>>>>>    tests/ovn-northd.at    |  69 ++++++++++++++++++++++++-
>>>>>    6 files changed, 159 insertions(+), 36 deletions(-)
>>>>>
>>>>> diff --git a/controller/chassis.c b/controller/chassis.c
>>>>> index 8a1559653..239658461 100644
>>>>> --- a/controller/chassis.c
>>>>> +++ b/controller/chassis.c
>>>>> @@ -350,6 +350,7 @@ chassis_build_other_config(const struct
> ovs_chassis_cfg *ovs_cfg,
>>>>>        smap_replace(config, "is-interconn",
>>>>>                     ovs_cfg->is_interconn ? "true" : "false");
>>>>>        smap_replace(config, OVN_FEATURE_PORT_UP_NOTIF, "true");
>>>>> +    smap_replace(config, OVN_FEATURE_CT_LB_MARK, "true");
>>>>>    }
>>>>>
>>>>>    /*
>>>>> @@ -455,6 +456,11 @@ chassis_other_config_changed(const struct
> ovs_chassis_cfg *ovs_cfg,
>>>>>            return true;
>>>>>        }
>>>>>
>>>>> +    if (!smap_get_bool(&chassis_rec->other_config,
> OVN_FEATURE_CT_LB_MARK,
>>>>> +                       false)) {
>>>>> +        return true;
>>>>> +    }
>>>>> +
>>>>>        return false;
>>>>>    }
>>>>>
>>>>> diff --git a/include/ovn/features.h b/include/ovn/features.h
>>>>> index d12a8eb0d..09f002287 100644
>>>>> --- a/include/ovn/features.h
>>>>> +++ b/include/ovn/features.h
>>>>> @@ -22,6 +22,7 @@
>>>>>
>>>>>    /* ovn-controller supported feature names. */
>>>>>    #define OVN_FEATURE_PORT_UP_NOTIF "port-up-notif"
>>>>> +#define OVN_FEATURE_CT_LB_MARK    "ct-lb-mark"
>>>>>
>>>>>    /* OVS datapath supported features.  Based on availability OVN
> might generate
>>>>>     * different types of openflows.
>>>>> diff --git a/northd/en-lflow.c b/northd/en-lflow.c
>>>>> index ffbdaf4e8..fa0dfcbe0 100644
>>>>> --- a/northd/en-lflow.c
>>>>> +++ b/northd/en-lflow.c
>>>>> @@ -60,6 +60,7 @@ void en_lflow_run(struct engine_node *node, void
> *data OVS_UNUSED)
>>>>>        lflow_input.meter_groups = &northd_data->meter_groups;
>>>>>        lflow_input.lbs = &northd_data->lbs;
>>>>>        lflow_input.bfd_connections = &northd_data->bfd_connections;
>>>>> +    lflow_input.features = &northd_data->features;
>>>>>        lflow_input.ovn_internal_version_changed =
>>>>>                          northd_data->ovn_internal_version_changed;
>>>>>
>>>>> diff --git a/northd/northd.c b/northd/northd.c
>>>>> index 51dec36b3..511ef6376 100644
>>>>> --- a/northd/northd.c
>>>>> +++ b/northd/northd.c
>>>>> @@ -398,6 +398,22 @@ ovn_stage_to_datapath_type(enum ovn_stage stage)
>>>>>        }
>>>>>    }
>>>>>
>>>>> +static void
>>>>> +build_chassis_features(const struct northd_input *input_data,
>>>>> +                       struct chassis_features *chassis_features)
>>>>> +{
>>>>> +    const struct sbrec_chassis *chassis;
>>>>> +
>>>>> +    SBREC_CHASSIS_TABLE_FOR_EACH (chassis,
> input_data->sbrec_chassis) {
>>>>> +        if (!smap_get_bool(&chassis->other_config,
> OVN_FEATURE_CT_LB_MARK,
>>>>> +                           false)) {
>>>>> +            chassis_features->ct_lb_mark = false;
>>>>> +            return;
>>>>> +        }
>>>>> +    }
>>>>> +    chassis_features->ct_lb_mark = true;
>>>>> +}
>>>>> +
>>>>>    struct ovn_chassis_qdisc_queues {
>>>>>        struct hmap_node key_node;
>>>>>        uint32_t queue_id;
>>>>> @@ -3803,12 +3819,13 @@ static bool
>>>>>    build_lb_vip_actions(struct ovn_lb_vip *lb_vip,
>>>>>                         struct ovn_northd_lb_vip *lb_vip_nb,
>>>>>                         struct ds *action, char *selection_fields,
>>>>> -                     bool ls_dp)
>>>>> +                     bool ls_dp, bool ct_lb_mark)
>>>>>    {
>>>>> +    const char *ct_lb_action = ct_lb_mark ? "ct_lb_mark" : "ct_lb";
>>>>>        bool skip_hash_fields = false, reject = false;
>>>>>
>>>>>        if (lb_vip_nb->lb_health_check) {
>>>>> -        ds_put_cstr(action, "ct_lb_mark(backends=");
>>>>> +        ds_put_format(action, "%s(backends=", ct_lb_action);
>>>>>
>>>>>            size_t n_active_backends = 0;
>>>>>            for (size_t i = 0; i < lb_vip->n_backends; i++) {
>>>>> @@ -3841,7 +3858,7 @@ build_lb_vip_actions(struct ovn_lb_vip *lb_vip,
>>>>>        } else if (lb_vip->empty_backend_rej && !lb_vip->n_backends) {
>>>>>            reject = true;
>>>>>        } else {
>>>>> -        ds_put_format(action, "ct_lb_mark(backends=%s);",
>>>>> +        ds_put_format(action, "%s(backends=%s);", ct_lb_action,
>>>>>                          lb_vip_nb->backend_ips);
>>>>>        }
>>>>>
>>>>> @@ -5768,13 +5785,16 @@ build_pre_lb(struct ovn_datapath *od, const
> struct shash *meter_groups,
>>>>>    }
>>>>>
>>>>>    static void
>>>>> -build_pre_stateful(struct ovn_datapath *od, struct hmap *lflows)
>>>>> +build_pre_stateful(struct ovn_datapath *od,
>>>>> +                   const struct chassis_features *features,
>>>>> +                   struct hmap *lflows)
>>>>>    {
>>>>>        /* Ingress and Egress pre-stateful Table (Priority 0): Packets
> are
>>>>>         * allowed by default. */
>>>>>        ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_STATEFUL, 0, "1",
> "next;");
>>>>>        ovn_lflow_add(lflows, od, S_SWITCH_OUT_PRE_STATEFUL, 0, "1",
> "next;");
>>>>>
>>>>> +    const char *ct_lb_action = features->ct_lb_mark ? "ct_lb_mark" :
> "ct_lb";
>>>>>        const char *lb_protocols[] = {"tcp", "udp", "sctp"};
>>>>>        struct ds actions = DS_EMPTY_INITIALIZER;
>>>>>        struct ds match = DS_EMPTY_INITIALIZER;
>>>>> @@ -5785,8 +5805,8 @@ build_pre_stateful(struct ovn_datapath *od,
> struct hmap *lflows)
>>>>>            ds_put_format(&match, REGBIT_CONNTRACK_NAT" == 1 && ip4 &&
> %s",
>>>>>                          lb_protocols[i]);
>>>>>            ds_put_format(&actions, REG_ORIG_DIP_IPV4 " = ip4.dst; "
>>>>> -                                REG_ORIG_TP_DPORT " = %s.dst;
> ct_lb_mark;",
>>>>> -                      lb_protocols[i]);
>>>>> +                                REG_ORIG_TP_DPORT " = %s.dst; %s;",
>>>>> +                      lb_protocols[i], ct_lb_action);
>>>>>            ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_STATEFUL, 120,
>>>>>                          ds_cstr(&match), ds_cstr(&actions));
>>>>>
>>>>> @@ -5795,20 +5815,20 @@ build_pre_stateful(struct ovn_datapath *od,
> struct hmap *lflows)
>>>>>            ds_put_format(&match, REGBIT_CONNTRACK_NAT" == 1 && ip6 &&
> %s",
>>>>>                          lb_protocols[i]);
>>>>>            ds_put_format(&actions, REG_ORIG_DIP_IPV6 " = ip6.dst; "
>>>>> -                                REG_ORIG_TP_DPORT " = %s.dst;
> ct_lb_mark;",
>>>>> -                      lb_protocols[i]);
>>>>> +                                REG_ORIG_TP_DPORT " = %s.dst; %s;",
>>>>> +                      lb_protocols[i], ct_lb_action);
>>>>>            ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_STATEFUL, 120,
>>>>>                          ds_cstr(&match), ds_cstr(&actions));
>>>>>        }
>>>>>
>>>>> -    ds_destroy(&actions);
>>>>> -    ds_destroy(&match);
>>>>> +    ds_clear(&actions);
>>>>> +    ds_put_format(&actions, "%s;", ct_lb_action);
>>>>>
>>>>>        ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_STATEFUL, 110,
>>>>> -                  REGBIT_CONNTRACK_NAT" == 1", "ct_lb_mark;");
>>>>> +                  REGBIT_CONNTRACK_NAT" == 1", ds_cstr(&actions));
>>>>>
>>>>>        ovn_lflow_add(lflows, od, S_SWITCH_OUT_PRE_STATEFUL, 110,
>>>>> -                  REGBIT_CONNTRACK_NAT" == 1", "ct_lb_mark;");
>>>>> +                  REGBIT_CONNTRACK_NAT" == 1", ds_cstr(&actions));
>>>>>
>>>>>        /* If REGBIT_CONNTRACK_DEFRAG is set as 1, then the packets
> should be
>>>>>         * sent to conntrack for tracking and defragmentation. */
>>>>> @@ -5817,6 +5837,9 @@ build_pre_stateful(struct ovn_datapath *od,
> struct hmap *lflows)
>>>>>
>>>>>        ovn_lflow_add(lflows, od, S_SWITCH_OUT_PRE_STATEFUL, 100,
>>>>>                      REGBIT_CONNTRACK_DEFRAG" == 1", "ct_next;");
>>>>> +
>>>>> +    ds_destroy(&actions);
>>>>> +    ds_destroy(&match);
>>>>>    }
>>>>>
>>>>>    static void
>>>>> @@ -6684,7 +6707,7 @@ build_qos(struct ovn_datapath *od, struct hmap
> *lflows) {
>>>>>    }
>>>>>
>>>>>    static void
>>>>> -build_lb_rules(struct hmap *lflows, struct ovn_northd_lb *lb,
>>>>> +build_lb_rules(struct hmap *lflows, struct ovn_northd_lb *lb, bool
> ct_lb_mark,
>>>>>                   struct ds *match, struct ds *action,
>>>>>                   const struct shash *meter_groups)
>>>>>    {
>>>>> @@ -6734,7 +6757,8 @@ build_lb_rules(struct hmap *lflows, struct
> ovn_northd_lb *lb,
>>>>>            /* New connections in Ingress table. */
>>>>>            const char *meter = NULL;
>>>>>            bool reject = build_lb_vip_actions(lb_vip, lb_vip_nb,
> action,
>>>>> -                                           lb->selection_fields,
> true);
>>>>> +                                           lb->selection_fields,
> true,
>>>>> +                                           ct_lb_mark);
>>>>>
>>>>>            ds_put_format(match, "ct.new && %s.dst == %s", ip_match,
>>>>>                          lb_vip->vip_str);
>>>>> @@ -7583,6 +7607,7 @@ build_lswitch_flows(const struct hmap
> *datapaths,
>>>>>    static void
>>>>>    build_lswitch_lflows_pre_acl_and_acl(struct ovn_datapath *od,
>>>>>                                         const struct hmap
> *port_groups,
>>>>> +                                     const struct chassis_features
> *features,
>>>>>                                         struct hmap *lflows,
>>>>>                                         const struct shash
> *meter_groups)
>>>>>    {
>>>>> @@ -7591,7 +7616,7 @@ build_lswitch_lflows_pre_acl_and_acl(struct
> ovn_datapath *od,
>>>>>
>>>>>            build_pre_acls(od, port_groups, lflows);
>>>>>            build_pre_lb(od, meter_groups, lflows);
>>>>> -        build_pre_stateful(od, lflows);
>>>>> +        build_pre_stateful(od, features, lflows);
>>>>>            build_acl_hints(od, lflows);
>>>>>            build_acls(od, lflows, port_groups, meter_groups);
>>>>>            build_qos(od, lflows);
>>>>> @@ -9672,8 +9697,10 @@ build_lrouter_nat_flows_for_lb(struct
> ovn_lb_vip *lb_vip,
>>>>>                                   struct ovn_northd_lb_vip *vips_nb,
>>>>>                                   struct hmap *lflows,
>>>>>                                   struct ds *match, struct ds *action,
>>>>> -                               const struct shash *meter_groups)
>>>>> +                               const struct shash *meter_groups,
>>>>> +                               bool ct_lb_mark)
>>>>>    {
>>>>> +    const char *ct_natted = ct_lb_mark ? "ct_mark.natted" :
> "ct_label.natted";
>>>>>        char *skip_snat_new_action = NULL;
>>>>>        char *skip_snat_est_action = NULL;
>>>>>        char *new_match;
>>>>> @@ -9683,7 +9710,8 @@ build_lrouter_nat_flows_for_lb(struct
> ovn_lb_vip *lb_vip,
>>>>>        ds_clear(action);
>>>>>
>>>>>        bool reject = build_lb_vip_actions(lb_vip, vips_nb, action,
>>>>> -                                       lb->selection_fields, false);
>>>>> +                                       lb->selection_fields, false,
>>>>> +                                       ct_lb_mark);
>>>>>
>>>>>        /* Higher priority rules are added for load-balancing in DNAT
>>>>>         * table.  For every match (on a VIP[:port]), we add two flows.
>>>>> @@ -9714,13 +9742,13 @@ build_lrouter_nat_flows_for_lb(struct
> ovn_lb_vip *lb_vip,
>>>>>                                  REG_ORIG_TP_DPORT_ROUTER" == %d",
>>>>>                                  ds_cstr(match), lb->proto,
> lb_vip->vip_port);
>>>>>            est_match = xasprintf("ct.est && %s && %s && "
>>>>> -                              REG_ORIG_TP_DPORT_ROUTER" == %d && "
>>>>> -                              "ct_mark.natted == 1",
>>>>> -                              ds_cstr(match), lb->proto,
> lb_vip->vip_port);
>>>>> +                              REG_ORIG_TP_DPORT_ROUTER" == %d && %s
> == 1",
>>>>> +                              ds_cstr(match), lb->proto,
> lb_vip->vip_port,
>>>>> +                              ct_natted);
>>>>>        } else {
>>>>>            new_match = xasprintf("ct.new && %s", ds_cstr(match));
>>>>> -        est_match = xasprintf("ct.est && %s && ct_mark.natted == 1",
>>>>> -                          ds_cstr(match));
>>>>> +        est_match = xasprintf("ct.est && %s && %s == 1",
>>>>> +                          ds_cstr(match), ct_natted);
>>>>>        }
>>>>>
>>>>>        const char *ip_match = NULL;
>>>>> @@ -9930,8 +9958,9 @@ build_lrouter_nat_flows_for_lb(struct
> ovn_lb_vip *lb_vip,
>>>>>
>>>>>    static void
>>>>>    build_lswitch_flows_for_lb(struct ovn_northd_lb *lb, struct hmap
> *lflows,
>>>>> -                           const struct shash *meter_groups, struct
> ds *match,
>>>>> -                           struct ds *action)
>>>>> +                           const struct shash *meter_groups,
>>>>> +                           const struct chassis_features *features,
>>>>> +                           struct ds *match, struct ds *action)
>>>>>    {
>>>>>        if (!lb->n_nb_ls) {
>>>>>            return;
>>>>> @@ -9967,7 +9996,8 @@ build_lswitch_flows_for_lb(struct ovn_northd_lb
> *lb, struct hmap *lflows,
>>>>>         * a higher priority rule for load balancing below also
> commits the
>>>>>         * connection, so it is okay if we do not hit the above match
> on
>>>>>         * REGBIT_CONNTRACK_COMMIT. */
>>>>> -    build_lb_rules(lflows, lb, match, action, meter_groups);
>>>>> +    build_lb_rules(lflows, lb, features->ct_lb_mark,
>>>>> +                   match, action, meter_groups);
>>>>>    }
>>>>>
>>>>>    /* If there are any load balancing rules, we should send the
> packet to
>>>>> @@ -10037,8 +10067,9 @@ build_lrouter_defrag_flows_for_lb(struct
> ovn_northd_lb *lb,
>>>>>
>>>>>    static void
>>>>>    build_lrouter_flows_for_lb(struct ovn_northd_lb *lb, struct hmap
> *lflows,
>>>>> -                           const struct shash *meter_groups, struct
> ds *match,
>>>>> -                           struct ds *action)
>>>>> +                           const struct shash *meter_groups,
>>>>> +                           const struct chassis_features *features,
>>>>> +                           struct ds *match, struct ds *action)
>>>>>    {
>>>>>        if (!lb->n_nb_lr) {
>>>>>            return;
>>>>> @@ -10049,7 +10080,7 @@ build_lrouter_flows_for_lb(struct
> ovn_northd_lb *lb, struct hmap *lflows,
>>>>>
>>>>>            build_lrouter_nat_flows_for_lb(lb_vip, lb, &lb->vips_nb[i],
>>>>>                                           lflows, match, action,
>>>>> -                                       meter_groups);
>>>>> +                                       meter_groups,
> features->ct_lb_mark);
>>>>>
>>>>>            if (!build_empty_lb_event_flow(lb_vip, lb->nlb, match,
> action)) {
>>>>>                continue;
>>>>> @@ -13522,6 +13553,7 @@ struct lswitch_flow_build_info {
>>>>>        const struct shash *meter_groups;
>>>>>        const struct hmap *lbs;
>>>>>        const struct hmap *bfd_connections;
>>>>> +    const struct chassis_features *features;
>>>>>        char *svc_check_match;
>>>>>        struct ds match;
>>>>>        struct ds actions;
>>>>> @@ -13540,7 +13572,9 @@
> build_lswitch_and_lrouter_iterate_by_od(struct ovn_datapath *od,
>>>>>                                            struct
> lswitch_flow_build_info *lsi)
>>>>>    {
>>>>>        /* Build Logical Switch Flows. */
>>>>> -    build_lswitch_lflows_pre_acl_and_acl(od, lsi->port_groups,
> lsi->lflows,
>>>>> +    build_lswitch_lflows_pre_acl_and_acl(od, lsi->port_groups,
>>>>> +                                         lsi->features,
>>>>> +                                         lsi->lflows,
>>>>>                                             lsi->meter_groups);
>>>>>
>>>>>        build_fwd_group_lflows(od, lsi->lflows);
>>>>> @@ -13680,10 +13714,12 @@ build_lflows_thread(void *arg)
>>>>>                        build_lrouter_defrag_flows_for_lb(lb,
> lsi->lflows,
>>>>>                                                          &lsi->match);
>>>>>                        build_lrouter_flows_for_lb(lb, lsi->lflows,
>>>>> -                                               lsi->meter_groups,
> &lsi->match,
>>>>> -                                               &lsi->actions);
>>>>> +                                               lsi->meter_groups,
>>>>> +                                               lsi->features,
>>>>> +                                               &lsi->match,
> &lsi->actions);
>>>>>                        build_lswitch_flows_for_lb(lb, lsi->lflows,
>>>>>                                                   lsi->meter_groups,
>>>>> +                                               lsi->features,
>>>>>                                                   &lsi->match,
> &lsi->actions);
>>>>>                    }
>>>>>                }
>>>>> @@ -13749,7 +13785,8 @@ build_lswitch_and_lrouter_flows(const struct
> hmap *datapaths,
>>>>>                                    struct hmap *igmp_groups,
>>>>>                                    const struct shash *meter_groups,
>>>>>                                    const struct hmap *lbs,
>>>>> -                                const struct hmap *bfd_connections)
>>>>> +                                const struct hmap *bfd_connections,
>>>>> +                                const struct chassis_features
> *features)
>>>>>    {
>>>>>
>>>>>        char *svc_check_match = xasprintf("eth.dst == %s",
> svc_monitor_mac);
>>>>> @@ -13786,6 +13823,7 @@ build_lswitch_and_lrouter_flows(const struct
> hmap *datapaths,
>>>>>                lsiv[index].meter_groups = meter_groups;
>>>>>                lsiv[index].lbs = lbs;
>>>>>                lsiv[index].bfd_connections = bfd_connections;
>>>>> +            lsiv[index].features = features;
>>>>>                lsiv[index].svc_check_match = svc_check_match;
>>>>>                lsiv[index].thread_lflow_counter = 0;
>>>>>                ds_init(&lsiv[index].match);
>>>>> @@ -13824,6 +13862,7 @@ build_lswitch_and_lrouter_flows(const struct
> hmap *datapaths,
>>>>>                .meter_groups = meter_groups,
>>>>>                .lbs = lbs,
>>>>>                .bfd_connections = bfd_connections,
>>>>> +            .features = features,
>>>>>                .svc_check_match = svc_check_match,
>>>>>                .match = DS_EMPTY_INITIALIZER,
>>>>>                .actions = DS_EMPTY_INITIALIZER,
>>>>> @@ -13849,9 +13888,9 @@ build_lswitch_and_lrouter_flows(const struct
> hmap *datapaths,
>>>>>                                                     &lsi.match);
>>>>>                build_lrouter_defrag_flows_for_lb(lb, lsi.lflows,
> &lsi.match);
>>>>>                build_lrouter_flows_for_lb(lb, lsi.lflows,
> lsi.meter_groups,
>>>>> -                                       &lsi.match, &lsi.actions);
>>>>> +                                       lsi.features, &lsi.match,
> &lsi.actions);
>>>>>                build_lswitch_flows_for_lb(lb, lsi.lflows,
> lsi.meter_groups,
>>>>> -                                       &lsi.match, &lsi.actions);
>>>>> +                                       lsi.features, &lsi.match,
> &lsi.actions);
>>>>>            }
>>>>>            stopwatch_stop(LFLOWS_LBS_STOPWATCH_NAME, time_msec());
>>>>>            stopwatch_start(LFLOWS_IGMP_STOPWATCH_NAME, time_msec());
>>>>> @@ -13998,7 +14037,8 @@ void build_lflows(struct lflow_input
> *input_data,
>>>>>                                        input_data->port_groups,
> &lflows,
>>>>>                                        &mcast_groups, &igmp_groups,
>>>>>                                        input_data->meter_groups,
> input_data->lbs,
>>>>> -                                    input_data->bfd_connections);
>>>>> +                                    input_data->bfd_connections,
>>>>> +                                    input_data->features);
>>>>>
>>>>>        if (parallelization_state == STATE_INIT_HASH_SIZES) {
>>>>>            parallelization_state = STATE_USE_PARALLELIZATION;
>>>>> @@ -15129,6 +15169,7 @@ northd_init(struct northd_data *data)
>>>>>        hmap_init(&data->lbs);
>>>>>        hmap_init(&data->bfd_connections);
>>>>>        ovs_list_init(&data->lr_list);
>>>>> +    memset(&data->features, 0, sizeof data->features);
>>>>>        data->ovn_internal_version_changed = false;
>>>>>    }
>>>>>
>>>>> @@ -15262,6 +15303,7 @@ ovnnb_db_run(struct northd_input *input_data,
>>>>>                                         "ignore_lsp_down", true);
>>>>>        default_acl_drop = smap_get_bool(&nb->options,
> "default_acl_drop", false);
>>>>>
>>>>> +    build_chassis_features(input_data, &data->features);
>>>>>        build_datapaths(input_data, ovnsb_txn, &data->datapaths,
> &data->lr_list);
>>>>>        build_lbs(input_data, &data->datapaths, &data->lbs);
>>>>>        build_ports(input_data, ovnsb_txn, sbrec_chassis_by_name,
>>>>> diff --git a/northd/northd.h b/northd/northd.h
>>>>> index fe8dad03a..07fcbcacc 100644
>>>>> --- a/northd/northd.h
>>>>> +++ b/northd/northd.h
>>>>> @@ -58,6 +58,10 @@ struct northd_input {
>>>>>        struct ovsdb_idl_index *sbrec_static_mac_binding_by_lport_ip;
>>>>>    };
>>>>>
>>>>> +struct chassis_features {
>>>>> +    bool ct_lb_mark;
>>>>> +};
>>>>> +
>>>>>    struct northd_data {
>>>>>        /* Global state for 'en-northd'. */
>>>>>        struct hmap datapaths;
>>>>> @@ -68,6 +72,7 @@ struct northd_data {
>>>>>        struct hmap bfd_connections;
>>>>>        struct ovs_list lr_list;
>>>>>        bool ovn_internal_version_changed;
>>>>> +    struct chassis_features features;
>>>>>    };
>>>>>
>>>>>    struct lflow_input {
>>>>> @@ -89,6 +94,7 @@ struct lflow_input {
>>>>>        const struct shash *meter_groups;
>>>>>        const struct hmap *lbs;
>>>>>        const struct hmap *bfd_connections;
>>>>> +    const struct chassis_features *features;
>>>>>        bool ovn_internal_version_changed;
>>>>>    };
>>>>>
>>>>> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
>>>>> index 5bd0935e7..7bb6d33ac 100644
>>>>> --- a/tests/ovn-northd.at
>>>>> +++ b/tests/ovn-northd.at
>>>>> @@ -4957,7 +4957,8 @@ AT_CHECK([grep "lr_out_snat" lr0flows | sed
> 's/table=./table=?/' | sort], [0], [
>>>>>      table=? (lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
>>>>>    ])
>>>>>
>>>>> -ovn-sbctl chassis-add gw1 geneve 127.0.0.1
>>>>> +check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 \
>>>>> +  -- set chassis gw1 other_config:ct-lb-mark="true"
>>>>>
>>>>>    # Create a distributed gw port on lr0
>>>>>    check ovn-nbctl ls-add public
>>>>> @@ -7418,3 +7419,69 @@ AT_CHECK([cat sw0flows | grep -e port_sec |
> sort | sed 's/table=./table=?/' ], [
>>>>>
>>>>>    AT_CLEANUP
>>>>>    ])
>>>>> +
>>>>> +
>>>>> +OVN_FOR_EACH_NORTHD([
>>>>> +AT_SETUP([Load balancer ct_lb_mark backwards compatibility])
>>>>> +AT_KEYWORDS([lb])
>>>>> +ovn_start
>>>>> +
>>>>> +check ovn-nbctl                                               \
>>>>> +  -- ls-add ls                                                \
>>>>> +  -- lr-add lr -- set logical_router lr options:chassis=local \
>>>>> +  -- lb-add lb-test 66.66.66.66 42.42.42.2                    \
>>>>> +  -- ls-lb-add ls lb-test                                     \
>>>>> +  -- lr-lb-add lr lb-test
>>>>> +
>>>>> +AS_BOX([No chassis registered - use ct_lb_mark and ct_mark.natted])
>>>>> +check ovn-nbctl --wait=sb sync
>>>>> +AT_CHECK([ovn-sbctl lflow-list | grep -e natted -e ct_lb], [0], [dnl
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.est &&
> ip4 && reg0 == 66.66.66.66 && ct_mark.natted == 1), action=(next;)
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.new &&
> ip4 && reg0 == 66.66.66.66), action=(ct_lb_mark(backends=42.42.42.2);)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && sctp), action=(reg1 = ip4.dst; reg2[[0..15]] = sctp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && tcp), action=(reg1 = ip4.dst; reg2[[0..15]] = tcp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && udp), action=(reg1 = ip4.dst; reg2[[0..15]] = udp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && sctp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = sctp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && tcp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = tcp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && udp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = udp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb_mark;)
>>>>> +  table=11(ls_in_lb           ), priority=110  , match=(ct.new &&
> ip4.dst == 66.66.66.66), action=(reg0[[1]] = 0; reg1 = 66.66.66.66;
> ct_lb_mark(backends=42.42.42.2);)
>>>>> +  table=2 (ls_out_pre_stateful), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb_mark;)
>>>>> +])
>>>>> +
>>>>> +AS_BOX([Chassis registered that doesn't support ct_lb_mark - use
> ct_lb and ct_label.natted])
>>>>> +check ovn-sbctl chassis-add hv geneve 127.0.0.1
>>>>> +check ovn-nbctl --wait=sb sync
>>>>> +AT_CHECK([ovn-sbctl lflow-list | grep -e natted -e ct_lb], [0], [dnl
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.est &&
> ip4 && reg0 == 66.66.66.66 && ct_label.natted == 1), action=(next;)
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.new &&
> ip4 && reg0 == 66.66.66.66), action=(ct_lb(backends=42.42.42.2);)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && sctp), action=(reg1 = ip4.dst; reg2[[0..15]] = sctp.dst; ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && tcp), action=(reg1 = ip4.dst; reg2[[0..15]] = tcp.dst; ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && udp), action=(reg1 = ip4.dst; reg2[[0..15]] = udp.dst; ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && sctp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = sctp.dst;
> ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && tcp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = tcp.dst; ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && udp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = udp.dst; ct_lb;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb;)
>>>>> +  table=11(ls_in_lb           ), priority=110  , match=(ct.new &&
> ip4.dst == 66.66.66.66), action=(reg0[[1]] = 0; reg1 = 66.66.66.66;
> ct_lb(backends=42.42.42.2);)
>>>>> +  table=2 (ls_out_pre_stateful), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb;)
>>>>> +])
>>>>> +
>>>>> +AS_BOX([Chassis upgrades and supports ct_lb_mark - use ct_lb_mark
> and ct_mark.natted])
>>>>> +check ovn-sbctl set chassis hv other_config:ct-lb-mark=true
>>>>> +check ovn-nbctl --wait=sb sync
>>>>> +AT_CHECK([ovn-sbctl lflow-list | grep -e natted -e ct_lb], [0], [dnl
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.est &&
> ip4 && reg0 == 66.66.66.66 && ct_mark.natted == 1), action=(next;)
>>>>> +  table=6 (lr_in_dnat         ), priority=110  , match=(ct.new &&
> ip4 && reg0 == 66.66.66.66), action=(ct_lb_mark(backends=42.42.42.2);)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && sctp), action=(reg1 = ip4.dst; reg2[[0..15]] = sctp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && tcp), action=(reg1 = ip4.dst; reg2[[0..15]] = tcp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip4 && udp), action=(reg1 = ip4.dst; reg2[[0..15]] = udp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && sctp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = sctp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && tcp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = tcp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=120  , match=(reg0[[2]] ==
> 1 && ip6 && udp), action=(xxreg1 = ip6.dst; reg2[[0..15]] = udp.dst;
> ct_lb_mark;)
>>>>> +  table=6 (ls_in_pre_stateful ), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb_mark;)
>>>>> +  table=11(ls_in_lb           ), priority=110  , match=(ct.new &&
> ip4.dst == 66.66.66.66), action=(reg0[[1]] = 0; reg1 = 66.66.66.66;
> ct_lb_mark(backends=42.42.42.2);)
>>>>> +  table=2 (ls_out_pre_stateful), priority=110  , match=(reg0[[2]] ==
> 1), action=(ct_lb_mark;)
>>>>> +])
>>>>> +
>>>>> +AT_CLEANUP
>>>>> +])
>>>>>
>>>>
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>>>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>>>>
>>>
>>
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>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> 

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