Hi Dumitru,
Thanks for the review.

Em qui., 21 de mai. de 2026 às 12:19, Dumitru Ceara <[email protected]>
escreveu:

> On 4/21/26 11:12 PM, Lucas Vargas Dias via dev wrote:
> > Create a handler for deleted and updated static routes,
> > and change the handler from engine route which check if
> > it has a new static route created.
> > Test with 2000 static routes created in the same logical router
> > and add a new one:
> > Without the incremental processing:
> > ovn-nbctl --print-wait-time --wait=sb lr-route-add lr1-2 10.0.0.1/32
> 192.168.20.2
> > Time spent on processing nb_cfg 4:
> >       ovn-northd delay before processing:     4ms
> >       ovn-northd completion:                  62ms
> >
> > With the incremental processing:
> > ovn-nbctl --print-wait-time --wait=sb lr-route-add lr1-2 10.0.0.1/32
> 192.168.20.2
> > Time spent on processing nb_cfg 6:
> >       ovn-northd delay before processing:     4ms
> >       ovn-northd completion:                  21ms
> >
> > Test with 2000 static routes created in the same logical router
> > and delete one:
> > Without the incremental processing:
> > ovn-nbctl --print-wait-time --wait=sb lr-route-del lr1-2 10.0.0.1/32
> 192.168.20.2
> > Time spent on processing nb_cfg 5:
> >       ovn-northd delay before processing:     3ms
> >       ovn-northd completion:                  62ms
> >
> > With the incremental processing:
> > ovn-nbctl --print-wait-time --wait=sb lr-route-del lr1-2 10.0.0.1/32
> 192.168.20.2
> > Time spent on processing nb_cfg 9:
> >       ovn-northd delay before processing:     2ms
> >       ovn-northd completion:                  32ms
> >
> > Signed-off-by: Lucas Vargas Dias <[email protected]>
> > ---
>
> Hi Lucas,
>
> Thanks for the patch!
>
> >  northd/en-group-ecmp-route.c     |  57 ++++++++++
> >  northd/en-group-ecmp-route.h     |   4 +
> >  northd/en-lflow.c                |  20 ++++
> >  northd/en-lflow.h                |   2 +
> >  northd/en-northd.c               | 186 +++++++++++++++++++++++++++----
> >  northd/en-northd.h               |   5 +-
> >  northd/inc-proc-northd.c         |  13 ++-
> >  northd/northd.c                  | 107 +++++++++++++-----
> >  northd/northd.h                  |  38 ++++++-
> >  tests/ovn-inc-proc-graph-dump.at |   6 +-
> >  tests/ovn-northd.at              |  98 +++++++++++++---
> >  11 files changed, 466 insertions(+), 70 deletions(-)
> >
> > diff --git a/northd/en-group-ecmp-route.c b/northd/en-group-ecmp-route.c
> > index c4c93fd84..fcc76b076 100644
> > --- a/northd/en-group-ecmp-route.c
> > +++ b/northd/en-group-ecmp-route.c
> > @@ -519,3 +519,60 @@
> group_ecmp_route_learned_route_change_handler(struct engine_node *eng_node,
> >      }
> >      return EN_HANDLED_UNCHANGED;
> >  }
> > +
> > +enum engine_input_handler_result
> > +group_ecmp_static_route_change_handler(struct engine_node *eng_node,
> > +                                       void *_data)
> > +{
> > +    struct routes_data *routes_data
> > +        = engine_get_input_data("routes", eng_node);
> > +    struct group_ecmp_route_data *data = _data;
> > +    if (!routes_data->tracked) {
> > +        data->tracked = false;
> > +        return EN_UNHANDLED;
> > +    }
> > +
> > +    struct parsed_route *pr;
> > +    struct hmapx updated_routes = HMAPX_INITIALIZER(&updated_routes);
> > +
> > +    const struct hmapx_node *hmapx_node;
> > +    HMAPX_FOR_EACH (hmapx_node,
> > +                    &routes_data->trk_data.trk_deleted_parsed_route) {
> > +        pr = hmapx_node->data;
> > +        if (!handle_deleted_route(data, pr, &updated_routes)) {
> > +            hmapx_destroy(&updated_routes);
> > +            return EN_UNHANDLED;
> > +        }
> > +
> > +        if (pr->is_in_parsed_routes) {
> > +            hmap_remove(&routes_data->parsed_routes, &pr->key_node);
>
> We're changing input node data here, we should not do that.  A change
> handler for an I-P node should only change that node's data and not its
> input node's data.
>
> E.g., in this loop we're in, what if the first route was successfully
> removed but for the second one we hit !handle_deleted_route(data, pr,
> &updated_routes)?  In that case, we already altered route_data and we
> fail incremental processing.  Then en_group_ecmp_route_run() will have
> to run (recompute) but it's input data is not correct anymore.
>
>
I agree


> > +        }
> > +        parsed_route_free(pr);
> > +    }
> > +
> > +    HMAPX_FOR_EACH (hmapx_node,
> > +                    &routes_data->trk_data.trk_crupdated_parsed_route) {
> > +        pr = hmapx_node->data;
> > +        handle_added_route(data, pr, &updated_routes);
> > +    }
> > +
> > +    HMAPX_FOR_EACH (hmapx_node, &updated_routes) {
> > +        struct group_ecmp_datapath *node = hmapx_node->data;
> > +        if (hmap_is_empty(&node->unique_routes) &&
> > +                hmap_is_empty(&node->ecmp_groups)) {
> > +            hmapx_add(&data->trk_data.deleted_datapath_routes, node);
> > +            hmap_remove(&data->datapaths, &node->hmap_node);
> > +        } else {
> > +            hmapx_add(&data->trk_data.crupdated_datapath_routes, node);
> > +        }
> > +    }
> > +
> > +    hmapx_destroy(&updated_routes);
> > +
> > +    if (!hmapx_is_empty(&data->trk_data.crupdated_datapath_routes) ||
> > +        !hmapx_is_empty(&data->trk_data.deleted_datapath_routes)) {
> > +        data->tracked = true;
> > +        return EN_HANDLED_UPDATED;
> > +    }
> > +    return EN_HANDLED_UNCHANGED;
> > +}
> > diff --git a/northd/en-group-ecmp-route.h b/northd/en-group-ecmp-route.h
> > index d4a3248d0..246ca06bf 100644
> > --- a/northd/en-group-ecmp-route.h
> > +++ b/northd/en-group-ecmp-route.h
> > @@ -98,6 +98,10 @@ enum engine_input_handler_result
> >  group_ecmp_route_learned_route_change_handler(struct engine_node *,
> >                                                void *data);
> >
> > +enum engine_input_handler_result
> > +group_ecmp_static_route_change_handler(struct engine_node *,
> > +                                       void *data);
> > +
> >  struct group_ecmp_datapath *group_ecmp_datapath_lookup(
> >      const struct group_ecmp_route_data *data,
> >      const struct ovn_datapath *od);
> > diff --git a/northd/en-lflow.c b/northd/en-lflow.c
> > index d4351edb9..22cd8fe91 100644
> > --- a/northd/en-lflow.c
> > +++ b/northd/en-lflow.c
> > @@ -297,6 +297,21 @@ lflow_multicast_igmp_handler(struct engine_node
> *node, void *data)
> >      return EN_HANDLED_UPDATED;
> >  }
> >
> > +enum engine_input_handler_result
> > +lflow_group_route_change_handler(struct engine_node *node,
> > +                                      void *data OVS_UNUSED)
>
> Nit: indentation
>
>

I agree


> > +{
> > +    struct routes_data *route_data =
> > +        engine_get_input_data("routes", node);
> > +
> > +    /* If we do not have tracked data we need to recompute. */
> > +    if (!route_data->tracked) {
> > +        return EN_UNHANDLED;
> > +    }
> > +
> > +    return EN_HANDLED_UNCHANGED;
> > +}
> > +
> >  enum engine_input_handler_result
> >  lflow_group_ecmp_route_change_handler(struct engine_node *node,
> >                                        void *data OVS_UNUSED)
> > @@ -346,6 +361,11 @@ lflow_group_ecmp_route_change_handler(struct
> engine_node *node,
> >              route_node->od, lflow_data->lflow_table,
> >              route_node, lflow_input.bfd_ports);
> >
> > +        build_arp_request_flows_for_lrouter(route_node->od,
> > +                                            lflow_data->lflow_table,
> > +                                            lflow_input.meter_groups,
> > +                                            route_node->lflow_ref);
> > +
> >          bool handled = lflow_ref_sync_lflows(
> >              route_node->lflow_ref, lflow_data->lflow_table,
> >              eng_ctx->ovnsb_idl_txn, lflow_input.dps,
> > diff --git a/northd/en-lflow.h b/northd/en-lflow.h
> > index d2a92e49f..aa320615f 100644
> > --- a/northd/en-lflow.h
> > +++ b/northd/en-lflow.h
> > @@ -31,5 +31,7 @@ lflow_multicast_igmp_handler(struct engine_node *node,
> void *data);
> >  enum engine_input_handler_result
> >  lflow_group_ecmp_route_change_handler(struct engine_node *node, void
> *data);
> >  enum engine_input_handler_result
> > +lflow_group_route_change_handler(struct engine_node *node, void *data);
> > +enum engine_input_handler_result
> >  lflow_ic_learned_svc_mons_handler(struct engine_node *node, void *data);
> >  #endif /* EN_LFLOW_H */
> > diff --git a/northd/en-northd.c b/northd/en-northd.c
> > index c34818dba..c05939a1d 100644
> > --- a/northd/en-northd.c
> > +++ b/northd/en-northd.c
> > @@ -207,7 +207,8 @@ northd_nb_logical_router_handler(struct engine_node
> *node,
> >      }
> >
> >      if (northd_has_lr_nats_in_tracked_data(&nd->trk_data) ||
> > -        northd_has_lrouters_in_tracked_data(&nd->trk_data)) {
> > +        northd_has_lrouters_in_tracked_data(&nd->trk_data) ||
> > +        northd_has_lr_route_in_tracked_data(&nd->trk_data)) {
> >          return EN_HANDLED_UPDATED;
> >      }
> >
> > @@ -329,32 +330,174 @@ en_route_policies_run(struct engine_node *node,
> void *data)
> >
> >  enum engine_input_handler_result
> >  routes_northd_change_handler(struct engine_node *node,
> > -                                    void *data OVS_UNUSED)
> > +                                    void *data)
>
> Why do we need this?  Isn't all incremental processing already covered
> by the routes_static_route_change_handler() handler for
> NB.Logical_Router_Static_Route updates?
>
>
You're right, I'll add a new version changing the creation
for routes_static_route_change_handler.





> >  {
> >      struct northd_data *northd_data = engine_get_input_data("northd",
> node);
> >      if (!northd_has_tracked_data(&northd_data->trk_data)) {
> >          return EN_UNHANDLED;
> >      }
> >
> > -    /* This node uses the below data from the en_northd engine node.
> > -     * See (lr_stateful_get_input_data())
> > -     *   1. northd_data->lr_datapaths
> > -     *   2. northd_data->lr_ports
> > -     *      This data gets updated when a logical router or logical
> router port
> > -     *      is created or deleted.
> > -     *      Northd engine node presently falls back to full recompute
> when
> > -     *      this happens and so does this node.
> > -     *      Note: When we add I-P to the created/deleted logical
> routers or
> > -     *      logical router ports, we need to revisit this handler.
> > -     *
> > -     *      This node also accesses the static routes of the logical
> router.
> > -     *      When these static routes gets updated, en_northd engine
> recomputes
> > -     *      and so does this node.
> > -     *      Note: When we add I-P to handle static routes changes, we
> need
> > -     *      to revisit this handler.
> > -     */
> > +    if (!northd_has_lr_route_in_tracked_data(&northd_data->trk_data)) {
> > +        return EN_HANDLED_UNCHANGED;
> > +    }
> > +
> > +    struct bfd_data *bfd_data = engine_get_input_data("bfd", node);
> > +    struct routes_data *routes_data = data;
> > +    struct hmapx_node *hmapx_node;
> > +    struct ovn_datapath *od;
> > +    HMAPX_FOR_EACH (hmapx_node, &northd_data->trk_data.trk_lrs_routes) {
> > +        od = hmapx_node->data;
> > +        struct parsed_route *pr;
> > +
> > +        for (int i = 0; i < od->nbr->n_static_routes; i++) {
> > +            struct nbrec_logical_router_static_route *static_route =
> > +                od->nbr->static_routes[i];
> > +            pr = parsed_route_lookup_by_source(ROUTE_SOURCE_STATIC,
> > +                                               &static_route->header_,
> > +
>  &routes_data->parsed_routes);
> > +            if (pr) {
> > +                pr->stale = false;
> > +                continue;
> > +            }
> > +            pr = parsed_routes_add_static(od, &northd_data->lr_ports,
> > +                                        static_route,
> > +                                        &bfd_data->bfd_connections,
> > +                                        &routes_data->parsed_routes,
> > +                                        &routes_data->route_tables,
> > +
> &routes_data->bfd_active_connections);
> > +            if (!pr) {
> > +                continue;
> > +            }
> > +            hmapx_add(&routes_data->trk_data.trk_crupdated_parsed_route,
> > +                      pr);
> > +        }
> > +    }
> > +
> > +    if
> (!hmapx_is_empty(&routes_data->trk_data.trk_crupdated_parsed_route)) {
> > +        routes_data->tracked = true;
> > +        return EN_HANDLED_UPDATED;
> > +    }
> > +
> >      return EN_HANDLED_UNCHANGED;
> >  }
> > +enum engine_input_handler_result
> > +routes_static_route_change_handler(struct engine_node *node,
> > +                                   void *data)
> > +{
> > +    struct routes_data *routes_data = data;
> > +    struct hmapx created_trk_parsed_route =
> > +        HMAPX_INITIALIZER(&created_trk_parsed_route);
> > +    const struct nbrec_logical_router_static_route_table *
> > +      nb_lr_static_route_table =
> > +    EN_OVSDB_GET(engine_get_input("NB_logical_router_static_route",
> node));
> > +
> > +    struct northd_data *northd_data = engine_get_input_data("northd",
> node);
> > +    struct bfd_data *bfd_data = engine_get_input_data("bfd", node);
> > +
> > +    const struct nbrec_logical_router_static_route
> *changed_static_route;
> > +    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_TABLE_FOR_EACH_TRACKED (
> > +                            changed_static_route,
> nb_lr_static_route_table) {
> > +
> > +        bool is_deleted = nbrec_logical_router_static_route_is_deleted(
> > +
> changed_static_route);
> > +        bool is_new = nbrec_logical_router_static_route_is_new(
> > +
> changed_static_route);
> > +
> > +        if (is_new && is_deleted) {
> > +            continue;
> > +        }
> > +
> > +        if (is_new) {
> > +            hmapx_add(&created_trk_parsed_route, &changed_static_route);
>
> This seems wrong.  Did you mean to store the value of
> "changed_static_route" instead?
>

Also, why do we need a hmapx?  We only need a bool to tell us if there
> were any new routes, or am I reading the code wrong?
>
>
I'll add the created/update routes in hmax trk_crupdated_parsed_route.


> > +            continue;
> > +        }
> > +
> > +        if (is_deleted) {
> > +            struct parsed_route *pr = parsed_route_lookup_by_source(
> > +                                            ROUTE_SOURCE_STATIC,
> > +
> &changed_static_route->header_,
> > +
> &routes_data->parsed_routes);
> > +            if (!pr) {
> > +                pr =
> parsed_route_lookup_by_source(ROUTE_SOURCE_IC_DYNAMIC,
> > +
> &changed_static_route->header_,
> > +
> &routes_data->parsed_routes);
> > +            }
> > +            if (pr) {
> > +                pr->stale = true;
> > +
> hmapx_add(&routes_data->trk_data.trk_deleted_parsed_route, pr);
> > +            }
> > +            continue;
> > +        }
> > +
> > +        if (nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_NEXTHOP)
> > +            || nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_IP_PREFIX)
> > +            || nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_OUTPUT_PORT)
> > +            || nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_POLICY)
> > +            || nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_ROUTE_TABLE)
> > +            || nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +
> NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_SELECTION_FIELDS)
> > +            ||  nbrec_logical_router_static_route_is_updated(
> > +                    changed_static_route,
> > +                    NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_OPTIONS)) {
>
> What about NBREC_LOGICAL_ROUTER_STATIC_ROUTE_COL_BFD?
>

I miss.


>
> > +            struct parsed_route *pr = parsed_route_lookup_by_source(
> > +                                            ROUTE_SOURCE_STATIC,
> > +
> &changed_static_route->header_,
> > +
> &routes_data->parsed_routes);
> > +            if (!pr) {
> > +                pr = parsed_route_lookup_by_source(
> > +                                                ROUTE_SOURCE_IC_DYNAMIC,
> > +
> &changed_static_route->header_,
> > +
> &routes_data->parsed_routes);
> > +            }
> > +
> > +            if (!pr || !pr->od || !northd_data || !bfd_data) {
>
> northd_data and bfd_data can never be NULL here, I think.
>
> > +                continue;
> > +            }
> > +            struct parsed_route *old_pr = pr;
> > +            hmap_remove(&routes_data->parsed_routes, &old_pr->key_node);
> > +            pr = parsed_routes_add_static(old_pr->od,
> &northd_data->lr_ports,
> > +                                        changed_static_route,
> > +                                        &bfd_data->bfd_connections,
> > +                                        &routes_data->parsed_routes,
> > +                                        &routes_data->route_tables,
> > +
> &routes_data->bfd_active_connections);
> > +            old_pr->is_in_parsed_routes = false;
> > +            if (!pr) {
>
> Do we leak old_pr here?
>
> I'll change the logic to save old_pr before try to add the new pr.


> > +                continue;
> > +            }
> > +
> > +            hmapx_add(&routes_data->trk_data.trk_crupdated_parsed_route,
> > +                       pr);
>
> Nit: indentation.
>
> > +            hmapx_add(&routes_data->trk_data.trk_deleted_parsed_route,
> > +                      old_pr);
> > +        }
> > +    }
> > +    if
> (!hmapx_is_empty(&routes_data->trk_data.trk_crupdated_parsed_route) ||
> > +
> !hmapx_is_empty(&routes_data->trk_data.trk_deleted_parsed_route)) {
> > +        hmapx_destroy(&created_trk_parsed_route);
> > +        routes_data->tracked = true;
> > +        return EN_HANDLED_UPDATED;
> > +    }
>
> I'm a bit confused about how this is supposed to work.  Here if we have
> tracked "updated" or "deleted" routes we return EN_HANDLED_UPDATED.
>
> But we could also have new routes that were added in this iteration.
>
> How do we handle those?  Also, how often does a static route get
> updated?  Usually they're added/deleted.
>

I add the create here also. In my scenario, it's not updated often.
Do you think it's better to remove the update here?


>
> > +
> > +    if (!hmapx_is_empty(&created_trk_parsed_route)) {
> > +        hmapx_destroy(&created_trk_parsed_route);
> > +        return EN_HANDLED_UPDATED;
>
> Same question here about how we handle new routes.
>
> > +    }
> > +
> > +    hmapx_destroy(&created_trk_parsed_route);
> > +    return EN_UNHANDLED;
>
> If we end up here doesn't it actually mean that there are no interesting
> changes?  Why would we return EN_UNHANDLED (and trigger a recompute)?
>
>
I see the test "check BFD config propagation to SBDB"  fails when adding a
new route with bfd.
parsed_routes_add_static return NULL due to admin_down.
So, I think it's better to trigger recompute. I'll adjust to trigger full
recompute if parsed_routes_add_static
returns NULL.

> +}
> >
> >  enum engine_node_state
> >  en_routes_run(struct engine_node *node, void *data)
> > @@ -590,6 +733,11 @@ en_routes_cleanup(void *data)
> >      routes_destroy(data);
> >  }
> >
> > +void
> > +en_routes_clear_tracked_data(void *data)
> > +{
> > +    routes_clear_tracked(data);
> > +}
> >  void
> >  en_bfd_cleanup(void *data)
> >  {
> > diff --git a/northd/en-northd.h b/northd/en-northd.h
> > index 7794739b9..5247f3e11 100644
> > --- a/northd/en-northd.h
> > +++ b/northd/en-northd.h
> > @@ -39,9 +39,12 @@ enum engine_node_state en_route_policies_run(struct
> engine_node *node,
> >                                               void *data);
> >  void *en_route_policies_init(struct engine_node *node OVS_UNUSED,
> >                               struct engine_arg *arg OVS_UNUSED);
> > +void en_routes_clear_tracked_data(void *data);
> >  void en_routes_cleanup(void *data);
> >  enum engine_input_handler_result
> > -routes_northd_change_handler(struct engine_node *node, void *data
> OVS_UNUSED);
> > +routes_northd_change_handler(struct engine_node *node, void *data);
> > +enum engine_input_handler_result
> > +routes_static_route_change_handler(struct engine_node *node, void
> *data);
> >  enum engine_node_state en_routes_run(struct engine_node *node, void
> *data);
> >  void *en_bfd_init(struct engine_node *node OVS_UNUSED,
> >                    struct engine_arg *arg OVS_UNUSED);
> > diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
> > index ece388ce7..52f5dc57f 100644
> > --- a/northd/inc-proc-northd.c
> > +++ b/northd/inc-proc-northd.c
> > @@ -76,7 +76,9 @@ static unixctl_cb_func chassis_features_list;
> >      NB_NODE(sampling_app) \
> >      NB_NODE(network_function) \
> >      NB_NODE(network_function_group) \
> > -    NB_NODE(logical_switch_port_health_check)
> > +    NB_NODE(logical_switch_port_health_check) \
> > +    NB_NODE(logical_router_static_route)
> > +
> >
> >      enum nb_engine_node {
> >  #define NB_NODE(NAME) NB_##NAME,
> > @@ -179,7 +181,7 @@ static ENGINE_NODE(lr_stateful, CLEAR_TRACKED_DATA);
> >  static ENGINE_NODE(ls_stateful, CLEAR_TRACKED_DATA);
> >  static ENGINE_NODE(ls_arp, CLEAR_TRACKED_DATA);
> >  static ENGINE_NODE(route_policies);
> > -static ENGINE_NODE(routes);
> > +static ENGINE_NODE(routes, CLEAR_TRACKED_DATA);
> >  static ENGINE_NODE(bfd);
> >  static ENGINE_NODE(bfd_sync, SB_WRITE);
> >  static ENGINE_NODE(ecmp_nexthop, SB_WRITE);
> > @@ -341,6 +343,8 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
> >      engine_add_input(&en_routes, &en_bfd, NULL);
> >      engine_add_input(&en_routes, &en_northd,
> >                       routes_northd_change_handler);
> > +    engine_add_input(&en_routes, &en_nb_logical_router_static_route,
> > +                     routes_static_route_change_handler);
> >
> >      engine_add_input(&en_bfd_sync, &en_bfd, NULL);
> >      engine_add_input(&en_bfd_sync, &en_nb_bfd, NULL);
> > @@ -380,7 +384,8 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
> >      engine_add_input(&en_learned_route_sync, &en_northd,
> >                       learned_route_sync_northd_change_handler);
> >
> > -    engine_add_input(&en_group_ecmp_route, &en_routes, NULL);
> > +    engine_add_input(&en_group_ecmp_route, &en_routes,
> > +                     group_ecmp_static_route_change_handler);
> >      engine_add_input(&en_group_ecmp_route, &en_learned_route_sync,
> >                       group_ecmp_route_learned_route_change_handler);
> >
> > @@ -399,7 +404,7 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
> >      engine_add_input(&en_lflow, &en_sb_logical_dp_group, NULL);
> >      engine_add_input(&en_lflow, &en_bfd_sync, NULL);
> >      engine_add_input(&en_lflow, &en_route_policies, NULL);
> > -    engine_add_input(&en_lflow, &en_routes, NULL);
> > +    engine_add_input(&en_lflow, &en_routes,
> lflow_group_route_change_handler);
> >      /* XXX: The incremental processing only supports changes to learned
> routes.
> >       * All other changes trigger a full recompute. */
> >      engine_add_input(&en_lflow, &en_group_ecmp_route,
> > diff --git a/northd/northd.c b/northd/northd.c
> > index 4fd4b9de9..ea48bc442 100644
> > --- a/northd/northd.c
> > +++ b/northd/northd.c
> > @@ -4517,6 +4517,7 @@ destroy_northd_data_tracked_changes(struct
> northd_data *nd)
> >      destroy_tracked_ovn_ports(&trk_changes->trk_lsps);
> >      destroy_tracked_lbs(&trk_changes->trk_lbs);
> >      hmapx_clear(&trk_changes->trk_nat_lrs);
> > +    hmapx_clear(&trk_changes->trk_lrs_routes);
> >      hmapx_clear(&trk_changes->ls_with_changed_lbs);
> >      hmapx_clear(&trk_changes->ls_with_changed_acls);
> >      hmapx_clear(&trk_changes->ls_with_changed_ipam);
> > @@ -4540,6 +4541,7 @@ init_northd_tracked_data(struct northd_data *nd)
> >      hmapx_init(&trk_data->trk_lbs.crupdated);
> >      hmapx_init(&trk_data->trk_lbs.deleted);
> >      hmapx_init(&trk_data->trk_nat_lrs);
> > +    hmapx_init(&trk_data->trk_lrs_routes);
> >      hmapx_init(&trk_data->ls_with_changed_lbs);
> >      hmapx_init(&trk_data->ls_with_changed_acls);
> >      hmapx_init(&trk_data->ls_with_changed_ipam);
> > @@ -4558,6 +4560,7 @@ destroy_northd_tracked_data(struct northd_data *nd)
> >      hmapx_destroy(&trk_data->trk_lbs.crupdated);
> >      hmapx_destroy(&trk_data->trk_lbs.deleted);
> >      hmapx_destroy(&trk_data->trk_nat_lrs);
> > +    hmapx_destroy(&trk_data->trk_lrs_routes);
> >      hmapx_destroy(&trk_data->ls_with_changed_lbs);
> >      hmapx_destroy(&trk_data->ls_with_changed_acls);
> >      hmapx_destroy(&trk_data->ls_with_changed_ipam);
> > @@ -5379,7 +5382,8 @@ lr_changes_can_be_handled(const struct
> nbrec_logical_router *lr)
> >          if (nbrec_logical_router_is_updated(lr, col)) {
> >              if (col == NBREC_LOGICAL_ROUTER_COL_LOAD_BALANCER
> >                  || col == NBREC_LOGICAL_ROUTER_COL_LOAD_BALANCER_GROUP
> > -                || col == NBREC_LOGICAL_ROUTER_COL_NAT) {
> > +                || col == NBREC_LOGICAL_ROUTER_COL_NAT
> > +                || col == NBREC_LOGICAL_ROUTER_COL_STATIC_ROUTES) {
> >                  continue;
> >              }
> >              return false;
> > @@ -5404,12 +5408,7 @@ lr_changes_can_be_handled(const struct
> nbrec_logical_router *lr)
> >              return false;
> >          }
> >      }
> > -    for (size_t i = 0; i < lr->n_static_routes; i++) {
> > -        if (nbrec_logical_router_static_route_row_get_seqno(
> > -            lr->static_routes[i], OVSDB_IDL_CHANGE_MODIFY) > 0) {
> > -            return false;
> > -        }
> > -    }
> > +
> >      return true;
> >  }
> >
> > @@ -5435,6 +5434,13 @@ is_lr_nats_changed(const struct
> nbrec_logical_router *nbr) {
> >              || is_lr_nats_seqno_changed(nbr));
> >  }
> >
> > +static bool
> > +is_lr_static_routes_changed(const struct nbrec_logical_router *nbr) {
> > +    return nbrec_logical_router_is_updated(nbr,
> > +
>  NBREC_LOGICAL_ROUTER_COL_STATIC_ROUTES);
> > +}
> > +
> > +
> >  /* Return true if changes are handled incrementally, false otherwise.
> >   *
> >   * Note: Changes to load balancer and load balancer groups associated
> with
> > @@ -5503,6 +5509,22 @@ northd_handle_lr_changes(const struct
> northd_input *ni,
> >
> >              hmapx_add(&nd->trk_data.trk_nat_lrs, od);
> >          }
> > +
> > +        /* Static Route was added or deleted. */
> > +        if (is_lr_static_routes_changed(changed_lr)) {
> > +            struct ovn_datapath *od = ovn_datapath_find_(
> > +                                    &nd->lr_datapaths.datapaths,
> > +                                    &changed_lr->header_.uuid);
> > +
> > +            if (!od) {
> > +                static struct vlog_rate_limit rl =
> VLOG_RATE_LIMIT_INIT(1, 1);
> > +                VLOG_WARN_RL(&rl, "Internal error: a tracked updated LR
> "
> > +                            "doesn't exist in lr_datapaths: "UUID_FMT,
> > +                            UUID_ARGS(&changed_lr->header_.uuid));
> > +                goto fail;
> > +            }
> > +            hmapx_add(&nd->trk_data.trk_lrs_routes, od);
> > +        }
> >      }
> >
> >      HMAPX_FOR_EACH (node, &ni->synced_lrs->deleted) {
> > @@ -5543,6 +5565,9 @@ northd_handle_lr_changes(const struct northd_input
> *ni,
> >      if (!hmapx_is_empty(&nd->trk_data.trk_nat_lrs)) {
> >          nd->trk_data.type |= NORTHD_TRACKED_LR_NATS;
> >      }
> > +    if (!hmapx_is_empty(&nd->trk_data.trk_lrs_routes)) {
> > +        nd->trk_data.type |= NORTHD_TRACKED_LR_ROUTES;
> > +    }
> >      if (!hmapx_is_empty(&nd->trk_data.trk_routers.crupdated) ||
> >          !hmapx_is_empty(&nd->trk_data.trk_routers.deleted)) {
> >          nd->trk_data.type |= NORTHD_TRACKED_ROUTERS;
> > @@ -12189,6 +12214,7 @@ parsed_route_init(const struct ovn_datapath *od,
> >      new_pr->route_table_id = route_table_id;
> >      new_pr->is_src_route = is_src_route;
> >      new_pr->od = od;
> > +    new_pr->is_in_parsed_routes = false;
> >      new_pr->ecmp_symmetric_reply = ecmp_symmetric_reply;
> >      new_pr->is_discard_route = is_discard_route;
> >      new_pr->lrp_addr_s = nullable_xstrdup(lrp_addr_s);
> > @@ -12296,6 +12322,7 @@ parsed_route_add(const struct ovn_datapath *od,
> >      struct parsed_route *pr = parsed_route_lookup(routes, hash, new_pr);
> >      if (!pr) {
> >          hmap_insert(routes, &new_pr->key_node, hash);
> > +        new_pr->is_in_parsed_routes = true;
> >          return new_pr;
> >      } else {
> >          pr->stale = false;
> > @@ -12304,7 +12331,7 @@ parsed_route_add(const struct ovn_datapath *od,
> >      }
> >  }
> >
> > -static void
> > +struct parsed_route *
> >  parsed_routes_add_static(const struct ovn_datapath *od,
> >                           const struct hmap *lr_ports,
> >                           const struct nbrec_logical_router_static_route
> *route,
> > @@ -12325,8 +12352,9 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >                           UUID_FMT, route->nexthop,
> >                           UUID_ARGS(&route->header_.uuid));
> >              free(nexthop);
> > -            return;
> > +            return NULL;
> >          }
> > +
> >          if ((IN6_IS_ADDR_V4MAPPED(nexthop) && plen != 32) ||
> >              (!IN6_IS_ADDR_V4MAPPED(nexthop) && plen != 128)) {
> >              static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5,
> 1);
> > @@ -12334,7 +12362,7 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >                           UUID_FMT, route->nexthop,
> >                           UUID_ARGS(&route->header_.uuid));
> >              free(nexthop);
> > -            return;
> > +            return NULL;
> >          }
> >      }
> >
> > @@ -12346,7 +12374,7 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >                       UUID_FMT, route->ip_prefix,
> >                       UUID_ARGS(&route->header_.uuid));
> >          free(nexthop);
> > -        return;
> > +        return NULL;
> >      }
> >
> >      /* Verify that ip_prefix and nexthop are on the same network. */
> > @@ -12358,7 +12386,7 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >                                     : IN6_IS_ADDR_V4MAPPED(&prefix),
> >                                     &lrp_addr_s, &out_port)) {
> >          free(nexthop);
> > -        return;
> > +        return NULL;
> >      }
> >
> >      const struct nbrec_bfd *nb_bt = route->bfd;
> > @@ -12368,7 +12396,7 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >                                                    nb_bt->dst_ip);
> >          if (!bfd_e) {
> >              free(nexthop);
> > -            return;
> > +            return NULL;
> >          }
> >
> >          /* This static route is linked to an active bfd session. */
> > @@ -12385,10 +12413,9 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >              bfd_set_status(bfd_sr, "down");
> >          }
> >
> > -
> >          if (!strcmp(bfd_sr->status, "down")) {
> > -            free(nexthop);
> > -            return;
> > +           free(nexthop);
> > +           return NULL;
>
> Nit: indentation.
>
> >          }
> >      }
> >
> > @@ -12427,11 +12454,15 @@ parsed_routes_add_static(const struct
> ovn_datapath *od,
> >          source = ROUTE_SOURCE_STATIC;
> >      }
> >
> > -    parsed_route_add(od, nexthop, &prefix, plen, is_discard_route,
> lrp_addr_s,
> > -                     out_port, route_table_id, is_src_route,
> > -                     ecmp_symmetric_reply, &ecmp_selection_fields,
> source,
> > -                     &route->header_, NULL, routes);
> > +    struct parsed_route *pr = parsed_route_add(od, nexthop, &prefix,
> plen,
> > +                                               is_discard_route,
> lrp_addr_s,
> > +                                               out_port, route_table_id,
> > +                                               is_src_route,
> > +                                               ecmp_symmetric_reply,
> > +                                               &ecmp_selection_fields,
> source,
> > +                                               &route->header_, NULL,
> routes);
> >      sset_destroy(&ecmp_selection_fields);
> > +    return pr;
> >  }
> >
> >  static void
> > @@ -16309,13 +16340,14 @@ build_lr_gateway_redirect_flows_for_nats(
> >   * In the common case where the Ethernet destination has been resolved,
> >   * this table outputs the packet (priority 0).  Otherwise, it composes
> >   * and sends an ARP/IPv6 NA request (priority 100). */
> > -static void
> > +void
> >  build_arp_request_flows_for_lrouter(
> > -        struct ovn_datapath *od, struct lflow_table *lflows,
> > -        struct ds *match, struct ds *actions,
> > +        const struct ovn_datapath *od, struct lflow_table *lflows,
> >          const struct shash *meter_groups,
> >          struct lflow_ref *lflow_ref)
> >  {
> > +    struct ds match =  DS_EMPTY_INITIALIZER;
>
> Nit: indentation.
>
>
I agree


> > +    struct ds actions = DS_EMPTY_INITIALIZER;
> >      ovs_assert(od->nbr);
> >      for (int i = 0; i < od->nbr->n_static_routes; i++) {
> >          const struct nbrec_logical_router_static_route *route;
> > @@ -16329,8 +16361,8 @@ build_arp_request_flows_for_lrouter(
> >              continue;
> >          }
> >
> > -        ds_clear(match);
> > -        ds_put_format(match, "eth.dst == 00:00:00:00:00:00 && "
> > +        ds_clear(&match);
> > +        ds_put_format(&match, "eth.dst == 00:00:00:00:00:00 && "
> >                        REGBIT_NEXTHOP_IS_IPV4" == 0 && "
> >                        REG_NEXT_HOP_IPV6 " == %s",
> >                        route->nexthop);
> > @@ -16342,8 +16374,8 @@ build_arp_request_flows_for_lrouter(
> >          char sn_addr_s[INET6_ADDRSTRLEN + 1];
> >          ipv6_string_mapped(sn_addr_s, &sn_addr);
> >
> > -        ds_clear(actions);
> > -        ds_put_format(actions,
> > +        ds_clear(&actions);
> > +        ds_put_format(&actions,
> >                        "nd_ns { "
> >                        "eth.dst = "ETH_ADDR_FMT"; "
> >                        "ip6.dst = %s; "
> > @@ -16353,7 +16385,7 @@ build_arp_request_flows_for_lrouter(
> >                        route->nexthop);
> >
> >          ovn_lflow_add(lflows, od, S_ROUTER_IN_ARP_REQUEST, 200,
> > -                      ds_cstr(match), ds_cstr(actions), lflow_ref,
> > +                      ds_cstr(&match), ds_cstr(&actions), lflow_ref,
> >                        WITH_CTRL_METER(copp_meter_get(COPP_ND_NS_RESOLVE,
> >                                                       od->nbr->copp,
> >                                                       meter_groups)),
> > @@ -16385,6 +16417,8 @@ build_arp_request_flows_for_lrouter(
> >
> meter_groups)));
> >      ovn_lflow_add(lflows, od, S_ROUTER_IN_ARP_REQUEST, 0, "1", "next;",
> >                    lflow_ref);
> > +    ds_destroy(&match);
> > +    ds_destroy(&actions);
> >  }
> >
> >  static void
> > @@ -19508,8 +19542,7 @@ build_lswitch_and_lrouter_iterate_by_lr(struct
> ovn_datapath *od,
> >      build_gateway_redirect_flows_for_lrouter(od, lsi->lflows,
> &lsi->match,
> >                                               &lsi->actions,
> >                                               od->datapath_lflows);
> > -    build_arp_request_flows_for_lrouter(od, lsi->lflows, &lsi->match,
> > -                                        &lsi->actions,
> > +    build_arp_request_flows_for_lrouter(od, lsi->lflows,
> >                                          lsi->meter_groups,
> >                                          od->datapath_lflows);
> >      build_ecmp_stateful_egr_flows_for_lrouter(od, lsi->lflows,
> > @@ -21067,6 +21100,9 @@ routes_init(struct routes_data *data)
> >      hmap_init(&data->parsed_routes);
> >      simap_init(&data->route_tables);
> >      hmap_init(&data->bfd_active_connections);
> > +    data->tracked = false;
> > +    hmapx_init(&data->trk_data.trk_deleted_parsed_route);
> > +    hmapx_init(&data->trk_data.trk_crupdated_parsed_route);
> >  }
> >
> >  void
> > @@ -21197,6 +21233,17 @@ routes_destroy(struct routes_data *data)
> >
> >      simap_destroy(&data->route_tables);
> >      __bfd_destroy(&data->bfd_active_connections);
> > +    data->tracked = false;
> > +    hmapx_destroy(&data->trk_data.trk_crupdated_parsed_route);
> > +    hmapx_destroy(&data->trk_data.trk_deleted_parsed_route);
> > +}
> > +
> > +void
> > +routes_clear_tracked(struct routes_data *data)
> > +{
> > +    data->tracked = false;
> > +    hmapx_clear(&data->trk_data.trk_crupdated_parsed_route);
> > +    hmapx_clear(&data->trk_data.trk_deleted_parsed_route);
> >  }
> >
> >  void
> > diff --git a/northd/northd.h b/northd/northd.h
> > index a9070d6f6..5b3461840 100644
> > --- a/northd/northd.h
> > +++ b/northd/northd.h
> > @@ -160,6 +160,7 @@ enum northd_tracked_data_type {
> >      NORTHD_TRACKED_LS_ACLS  = (1 << 4),
> >      NORTHD_TRACKED_SWITCHES = (1 << 5),
> >      NORTHD_TRACKED_ROUTERS  = (1 << 6),
> > +    NORTHD_TRACKED_LR_ROUTES  = (1 << 7),
> >  };
> >
> >  /* Track what's changed in the northd engine node.
> > @@ -177,6 +178,10 @@ struct northd_tracked_data {
> >       * hmapx node is 'struct ovn_datapath *'. */
> >      struct hmapx trk_nat_lrs;
> >
> > +    /* Tracked logical routers whose static routes have changed.
> > +     * hmapx node is 'struct ovn_datapath *'. */
> > +    struct hmapx trk_lrs_routes;
> > +
> >      /* Tracked logical switches whose load balancers have changed.
> >       * hmapx node is 'struct ovn_datapath *'. */
> >      struct hmapx ls_with_changed_lbs;
> > @@ -217,10 +222,23 @@ struct route_policy {
> >      uint32_t jump_chain_id;
> >  };
> >
> > +struct route_tracked_data {
> > +    /* Contains references to group_ecmp_route_node. Each of the
> referenced
> > +     * datapaths contains at least one route. */
> > +    struct hmapx trk_crupdated_parsed_route;
> > +
> > +    /* Contains references to group_ecmp_route_node. Each of the
> referenced
> > +     * datapath previously had some routes. The datapath now no longer
> > +     * contains any route.*/
> > +    struct hmapx trk_deleted_parsed_route;
> > +};
> > +
> >  struct routes_data {
> >      struct hmap parsed_routes; /* Stores struct parsed_route. */
> >      struct simap route_tables;
> >      struct hmap bfd_active_connections;
> > +    bool tracked;
> > +    struct route_tracked_data trk_data;
> >  };
> >
> >  struct route_policies_data {
> > @@ -855,6 +873,7 @@ struct parsed_route {
> >      char *lrp_addr_s;
> >      const struct ovn_port *out_port;
> >      const struct ovn_port *tracked_port; /* May be NULL. */
> > +    bool is_in_parsed_routes;
> >  };
> >
> >  struct parsed_route *parsed_route_clone(const struct parsed_route *);
> > @@ -881,6 +900,14 @@ struct parsed_route *parsed_route_add(
> >      const struct ovn_port *tracked_port,
> >      struct hmap *routes);
> >
> > +struct  parsed_route * parsed_routes_add_static(
> > +    const struct ovn_datapath *od,
> > +    const struct hmap *lr_ports,
> > +    const struct nbrec_logical_router_static_route *route,
> > +    const struct hmap *bfd_connections,
> > +    struct hmap *routes, struct simap *route_tables,
> > +    struct hmap *bfd_active_connections);
> > +
> >  struct svc_monitors_map_data {
> >      const struct hmap *local_svc_monitors_map;
> >      const struct hmap *ic_learned_svc_monitors_map;
> > @@ -925,7 +952,7 @@ void build_parsed_routes(const struct ovn_datapath
> *, const struct hmap *,
> >  uint32_t get_route_table_id(struct simap *, const char *);
> >  void routes_init(struct routes_data *);
> >  void routes_destroy(struct routes_data *);
> > -
> > +void routes_clear_tracked(struct routes_data *);
> >  void bfd_init(struct bfd_data *);
> >  void bfd_destroy(struct bfd_data *);
> >
> > @@ -951,6 +978,10 @@ void build_route_data_flows_for_lrouter(
> >      const struct ovn_datapath *od, struct lflow_table *lflows,
> >      const struct group_ecmp_datapath *route_node,
> >      const struct sset *bfd_ports);
> > +void build_arp_request_flows_for_lrouter(
> > +    const struct ovn_datapath *od, struct lflow_table *lflows,
> > +    const struct shash *meter_groups,
> > +    struct lflow_ref *lflow_ref);
> >
> >  bool lflow_handle_northd_lr_changes(struct ovsdb_idl_txn *ovnsh_txn,
> >                                       struct tracked_dps *,
> > @@ -1041,6 +1072,11 @@ northd_has_lr_nats_in_tracked_data(struct
> northd_tracked_data *trk_nd_changes)
> >  {
> >      return trk_nd_changes->type & NORTHD_TRACKED_LR_NATS;
> >  }
> > +static inline bool
> > +northd_has_lr_route_in_tracked_data(struct northd_tracked_data
> *trk_nd_changes)
> > +{
> > +    return trk_nd_changes->type & NORTHD_TRACKED_LR_ROUTES;
> > +}
> >
> >  static inline bool
> >  northd_has_ls_lbs_in_tracked_data(struct northd_tracked_data
> *trk_nd_changes)
> > diff --git a/tests/ovn-inc-proc-graph-dump.at b/tests/
> ovn-inc-proc-graph-dump.at
> > index 178310978..fd05c20dc 100644
> > --- a/tests/ovn-inc-proc-graph-dump.at
> > +++ b/tests/ovn-inc-proc-graph-dump.at
> > @@ -151,9 +151,11 @@ digraph "Incremental-Processing-Engine" {
> >       bfd [[style=filled, shape=box, fillcolor=white, label="bfd"]];
> >       NB_bfd -> bfd [[label=""]];
> >       SB_bfd -> bfd [[label=""]];
> > +     NB_logical_router_static_route [[style=filled, shape=box,
> fillcolor=white, label="NB_logical_router_static_route"]];
> >       routes [[style=filled, shape=box, fillcolor=white,
> label="routes"]];
> >       bfd -> routes [[label=""]];
> >       northd -> routes [[label="routes_northd_change_handler"]];
> > +     NB_logical_router_static_route -> routes
> [[label="routes_static_route_change_handler"]];
> >       route_policies [[style=filled, shape=box, fillcolor=white,
> label="route_policies"]];
> >       bfd -> route_policies [[label=""]];
> >       northd -> route_policies
> [[label="route_policies_northd_change_handler"]];
> > @@ -168,7 +170,7 @@ digraph "Incremental-Processing-Engine" {
> >       SB_learned_route -> learned_route_sync
> [[label="learned_route_sync_sb_learned_route_change_handler"]];
> >       northd -> learned_route_sync
> [[label="learned_route_sync_northd_change_handler"]];
> >       group_ecmp_route [[style=filled, shape=box, fillcolor=white,
> label="group_ecmp_route"]];
> > -     routes -> group_ecmp_route [[label=""]];
> > +     routes -> group_ecmp_route
> [[label="group_ecmp_static_route_change_handler"]];
> >       learned_route_sync -> group_ecmp_route
> [[label="group_ecmp_route_learned_route_change_handler"]];
> >       ls_stateful [[style=filled, shape=box, fillcolor=white,
> label="ls_stateful"]];
> >       northd -> ls_stateful [[label="ls_stateful_northd_handler"]];
> > @@ -189,7 +191,7 @@ digraph "Incremental-Processing-Engine" {
> >       SB_logical_dp_group -> lflow [[label=""]];
> >       bfd_sync -> lflow [[label=""]];
> >       route_policies -> lflow [[label=""]];
> > -     routes -> lflow [[label=""]];
> > +     routes -> lflow [[label="lflow_group_route_change_handler"]];
> >       group_ecmp_route -> lflow
> [[label="lflow_group_ecmp_route_change_handler"]];
> >       global_config -> lflow [[label="node_global_config_handler"]];
> >       sampling_app -> lflow [[label=""]];
> > diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> > index 1d7bd6c28..eacccaf20 100644
> > --- a/tests/ovn-northd.at
> > +++ b/tests/ovn-northd.at
> > @@ -4272,9 +4272,9 @@ check ovn-nbctl --bfd=$uuid lr-route-add r0
> 100.0.0.0/8 192.168.1.2
> >  wait_column down bfd status logical_port=r0-sw1
> >  AT_CHECK([ovn-nbctl lr-route-list r0 | grep 192.168.1.2 | grep -q bfd],
> [0], [], [ignore])
> >
> > -check_engine_stats northd recompute nocompute
> > +check_engine_stats northd norecompute compute
> >  check_engine_stats bfd recompute nocompute
> > -check_engine_stats routes recompute nocompute
> > +check_engine_stats routes recompute incremental
> >  check_engine_stats lflow recompute nocompute
> >  check_engine_stats northd_output norecompute compute
> >  CHECK_NO_CHANGE_AFTER_RECOMPUTE
> > @@ -4288,9 +4288,9 @@ check ovn-nbctl --bfd lr-route-add r0 240.0.0.0/8
> 192.168.5.2 r0-sw5
> >  wait_column down bfd status logical_port=r0-sw5
> >  AT_CHECK([ovn-nbctl lr-route-list r0 | grep 192.168.5.2 | grep -q bfd],
> [0], [], [ignore])
> >
> > -check_engine_stats northd recompute nocompute
> > +check_engine_stats northd norecompute compute
> >  check_engine_stats bfd recompute nocompute
> > -check_engine_stats routes recompute nocompute
> > +check_engine_stats routes recompute incremental
> >  check_engine_stats lflow recompute nocompute
> >  check_engine_stats northd_output norecompute compute
> >  CHECK_NO_CHANGE_AFTER_RECOMPUTE
> > @@ -4300,7 +4300,7 @@ check ovn-nbctl --bfd --policy=src-ip lr-route-add
> r0 192.168.6.1/32 192.168.10.
> >  wait_column down bfd status logical_port=r0-sw6
> >  AT_CHECK([ovn-nbctl lr-route-list r0 | grep 192.168.6.1 | grep -q bfd],
> [0], [], [ignore])
> >
> > -check_engine_stats northd recompute nocompute
> > +check_engine_stats northd norecompute compute
> >  check_engine_stats bfd recompute nocompute
> >  check_engine_stats route_policies recompute nocompute
> >  check_engine_stats lflow recompute nocompute
> > @@ -4335,10 +4335,10 @@ wait_column down bfd status logical_port=r0-sw8
> >  bfd_route_policy_uuid=$(fetch_column nb:bfd _uuid logical_port=r0-sw8)
> >  AT_CHECK([ovn-nbctl list logical_router_policy | grep -q
> $bfd_route_policy_uuid])
> >
> > -check_engine_stats northd recompute nocompute
> > +check_engine_stats northd recompute incremental
> >  check_engine_stats bfd recompute nocompute
> > -check_engine_stats routes recompute nocompute
> > -check_engine_stats lflow recompute nocompute
> > +check_engine_stats routes recompute incremental
> > +check_engine_stats lflow recompute incremental
> >  check_engine_stats northd_output norecompute compute
> >  CHECK_NO_CHANGE_AFTER_RECOMPUTE
> >  check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > @@ -16437,12 +16437,12 @@ CHECK_NO_CHANGE_AFTER_RECOMPUTE
> >
> >  check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> >  check ovn-nbctl --wait=sb lr-route-add lr0 192.168.0.0/24 10.0.0.10
> > -check_engine_compute northd recompute
> > -check_engine_compute routes recompute
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> >  check_engine_compute advertised_route_sync recompute
> > -check_engine_compute learned_route_sync recompute
> > -check_engine_compute group_ecmp_route recompute
> > -check_engine_compute lflow recompute
> > +check_engine_compute learned_route_sync incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> >  CHECK_NO_CHANGE_AFTER_RECOMPUTE
> >
> >  check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > @@ -20672,3 +20672,75 @@ check_column "$global_svc_mon_mac"
> sb:Service_Monitor src_mac port=2
> >  OVN_CLEANUP_NORTHD
> >  AT_CLEANUP
> >  ])
> > +
> > +OVN_FOR_EACH_NORTHD_NO_HV([
> > +AT_SETUP([Static Route incremental processing])
>
> In general for this test, should we also check the actual contents of
> the SB database after each command?  We only check the I-P engine stats.
>

We can check.


> > +ovn_start
> > +
> > +check ovn-nbctl lr-add r0
> > +
> > +check ovn-nbctl --wait=sb lrp-add r0 r0-lrp1 00:00:00:00:00:01
> 192.168.1.1/24
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb lr-route-add r0 10.0.0.0/24 192.168.1.2
> > +
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +static_route_uuid=`ovn-nbctl --bare --columns _uuid find
> Logical_Router_Static_Route nexthop=192.168.1.2`
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid nexthop=192.168.1.3
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid ip_prefix=10.0.1.0/24
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check ovn-nbctl --wait=sb lrp-add r0 r0-lrp2 00:00:00:00:00:02
> 192.168.1.10/24
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid output_port=r0-lrp2
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid policy=src-ip
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid selection_fields="ip_proto,ip_src,ip_dst"
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl --wait=sb set logical_router_static_route
> $static_route_uuid options:ecmp_symmetric_reply=true
> > +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
> > +check ovn-nbctl remove logical_router r0 static_routes
> $static_route_uuid
>
> Missing --wait=sb.
>
> I agree


Regards,
Lucas


> +check_engine_compute northd incremental
> > +check_engine_compute routes incremental
> > +check_engine_compute group_ecmp_route incremental
> > +check_engine_compute lflow incremental
> > +
> > +OVN_CLEANUP_NORTHD
> > +AT_CLEANUP
> > +])
>
> Regards,
> Dumitru
>
>

-- 




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