> Hi,
> 
> Thanks for the review.
> 
> Em qui., 11 de set. de 2025 às 12:23, Lorenzo Bianconi <
> [email protected]> escreveu:
> 
> > > Logical router adv in ovn-ic the sb learned routes from
> > > dynamic routing. Also, it doesn't learn route in ovn-ic
> > > if prefix is already learned in sb learned route table.
> >
> > Hi Lucas,
> >
> > I think the patch is fine, just few nit inline.
> >
> > Regards,
> > Lorenzo
> >
> > >
> > > Signed-off-by: Lucas Vargas Dias <[email protected]>
> > > ---
> > >  ic/ovn-ic.c     | 102 +++++++++++++++++++++++++++++++++----
> > >  tests/ovn-ic.at | 130 ++++++++++++++++++++++++++++++++++++++++++++++++
> > >  2 files changed, 223 insertions(+), 9 deletions(-)
> > >
> > > diff --git a/ic/ovn-ic.c b/ic/ovn-ic.c
> > > index d1a59d372..5bf576eac 100644
> > > --- a/ic/ovn-ic.c
> > > +++ b/ic/ovn-ic.c
> > > @@ -70,6 +70,7 @@ struct ic_context {
> > >      struct ovsdb_idl_index *nbrec_port_by_name;
> > >      struct ovsdb_idl_index *sbrec_chassis_by_name;
> > >      struct ovsdb_idl_index *sbrec_port_binding_by_name;
> > > +    struct ovsdb_idl_index *sbrec_datapath_binding_by_nb_uuid;
> > >      struct ovsdb_idl_index *sbrec_service_monitor_by_remote_type;
> > >      struct ovsdb_idl_index *sbrec_service_monitor_by_ic_learned;
> > >      struct ovsdb_idl_index
> > *sbrec_service_monitor_by_remote_type_logical_port;
> > > @@ -513,6 +514,21 @@ find_sb_pb_by_name(struct ovsdb_idl_index
> > *sbrec_port_binding_by_name,
> > >      return pb;
> > >  }
> > >
> > > +static const struct sbrec_datapath_binding *
> > > +find_dp_by_uuid(struct ovsdb_idl_index *sbrec_datapath_binding,
> > > +                const struct uuid *nb_uuid)
> > > +{
> > > +    const struct sbrec_datapath_binding *key =
> > > +        sbrec_datapath_binding_index_init_row(sbrec_datapath_binding);
> > > +    sbrec_datapath_binding_set_nb_uuid(key, nb_uuid, 1);
> > > +
> > > +    const struct sbrec_datapath_binding *dp =
> > > +        sbrec_datapath_binding_index_find(sbrec_datapath_binding, key);
> > > +    sbrec_datapath_binding_index_destroy_row(key);
> > > +
> > > +    return dp;
> > > +}
> > > +
> > >  static const struct sbrec_port_binding *
> > >  find_peer_port(struct ic_context *ctx,
> > >                 const struct sbrec_port_binding *sb_pb)
> > > @@ -1191,7 +1207,7 @@ add_to_routes_ad(struct hmap *routes_ad, const
> > struct in6_addr prefix,
> > >                   const struct nbrec_load_balancer *nb_lb,
> > >                   const char *route_tag)
> > >  {
> > > -    ovs_assert(nb_route || nb_lrp || nb_lb);
> > > +    ovs_assert(nb_route || nb_lrp || nb_lb || nb_lr);
> > >
> > >      if (route_table == NULL) {
> > >          route_table = "";
> > > @@ -1223,9 +1239,12 @@ add_to_routes_ad(struct hmap *routes_ad, const
> > struct in6_addr prefix,
> > >          } else if (nb_lb) {
> > >              VLOG_WARN_RL(&rl, msg_fmt, origin, "loadbalancer",
> > >                           UUID_ARGS(&nb_lb->header_.uuid));
> > > -        } else {
> > > +        } else if (nb_lrp){
> > >              VLOG_WARN_RL(&rl, msg_fmt, origin, "lrp",
> > >                           UUID_ARGS(&nb_lrp->header_.uuid));
> > > +        } else {
> > > +            VLOG_WARN_RL(&rl, msg_fmt, origin, "route",
> > > +                UUID_ARGS(&nb_lr->header_.uuid));
> > >          }
> > >      }
> > >  }
> > > @@ -1301,8 +1320,16 @@ add_network_to_routes_ad(struct hmap *routes_ad,
> > const char *network,
> > >
> > >      if (!route_need_advertise(NULL, &prefix, plen, nb_options,
> > >                                nb_lr, ts_lrp)) {
> > > -        VLOG_DBG("Route ad: skip network %s of lrp %s.",
> > > -                 network, nb_lrp->name);
> > > +        if (VLOG_IS_DBG_ENABLED()) {
> > > +            struct ds msg = DS_EMPTY_INITIALIZER;
> > > +            ds_put_format(&msg, "Route ad: skip network %s", network);
> > > +            if (nb_lrp) {
> > > +                ds_put_format(&msg, " of lrp %s", nb_lrp->name);
> > > +            }
> > > +            ds_put_format(&msg, ".");
> > > +            VLOG_DBG("%s", ds_cstr(&msg));
> > > +            ds_destroy(&msg);
> > > +        }
> > >          return;
> > >      }
> > >
> > > @@ -1316,8 +1343,12 @@ add_network_to_routes_ad(struct hmap *routes_ad,
> > const char *network,
> > >          struct ds msg = DS_EMPTY_INITIALIZER;
> > >
> > >          ds_put_format(&msg, "Adding direct network route to <main>
> > routing "
> > > -                      "table: %s of lrp %s, nexthop ", network,
> > nb_lrp->name);
> > > +                      "table: %s", network);
> > >
> > > +        if (nb_lrp) {
> > > +            ds_put_format(&msg, " of lrp %s,", nb_lrp->name);
> > > +        }
> > > +        ds_put_format(&msg, " nexthop ");
> > >          if (IN6_IS_ADDR_V4MAPPED(&nexthop)) {
> > >              ds_put_format(&msg, IP_FMT,
> > >                            IP_ARGS(in6_addr_get_mapped_ipv4(&nexthop)));
> > > @@ -1498,7 +1529,8 @@ route_matches_local_lb(const struct
> > nbrec_load_balancer *nb_lb,
> > >  }
> > >
> > >  static bool
> > > -route_need_learn(const struct nbrec_logical_router *lr,
> > > +route_need_learn(struct ic_context *ctx,
> > > +                 const struct nbrec_logical_router *lr,
> > >                   const struct icsbrec_route *isb_route,
> > >                   struct in6_addr *prefix, unsigned int plen,
> > >                   const struct smap *nb_options,
> > > @@ -1564,6 +1596,23 @@ route_need_learn(const struct
> > nbrec_logical_router *lr,
> > >          }
> > >      }
> > >
> > > +    const struct sbrec_datapath_binding *dp =
> > > +        find_dp_by_uuid(ctx->sbrec_datapath_binding_by_nb_uuid,
> > > +                        &lr->header_.uuid);
> > > +    if (!dp) {
> > > +        return true;
> > > +    }
> > > +    const struct sbrec_learned_route_table *sbrec_learned_route_table =
> > > +
> > sbrec_learned_route_table_get(ctx->ovnsb_idl);
> > > +    const struct sbrec_learned_route *sb_route;
> >
> > Maybe we can try to use an index here to speed-up the lookup? Not sure if
> > it
> > is worth doing so. What do you think?
> >
> 
> I didn't understand what type of lookup you mention. Maybe you have more
> experience than I do,
> but I didn't find an example that searches for an entry in sbrec and
> returns a list of entries.
> 
> If there exists a way to find sbrec_learned_routes by datapath, it will be
> possible to speed-up the lookup.

Hi Lucas,

sorry for the late reply.
What I mean here is you can create an index (something similar to
sbrec_learned_route_index_by_datapath index in ovn-controller [0]) in order to
speed-up the lookup of learned routes for a specific datapath.

Regards,
Lorenzo

[0] https://github.com/ovn-org/ovn/blob/main/controller/ovn-controller.c#L6700

> 
> Best,
> Lucas
> 
> 
> 
> 
> > > +    SBREC_LEARNED_ROUTE_TABLE_FOR_EACH_SAFE (sb_route,
> > > +                                             sbrec_learned_route_table)
> > {
> > > +        if (uuid_equals(&sb_route->datapath->header_.uuid,
> > &dp->header_.uuid)
> > > +            && !strcmp(isb_route->ip_prefix, sb_route->ip_prefix)) {
> > > +                return false;
> > > +        }
> > > +    }
> > > +
> > >      return true;
> > >  }
> > >
> > > @@ -1686,7 +1735,7 @@ sync_learned_routes(struct ic_context *ctx,
> > >      const struct nbrec_logical_router_port *lrp;
> > >      VECTOR_FOR_EACH (&ic_lr->isb_pbs, isb_pb) {
> > >          lrp_name = get_lrp_name_by_ts_port_name(ctx,
> > isb_pb->logical_port);
> > > -        lrp = get_lrp_by_lrp_name(ctx, lrp_name);
> > > +        lrp = lrp_name ? get_lrp_by_lrp_name(ctx, lrp_name) : NULL;
> > >          if (lrp) {
> > >              ts_route_table = smap_get_def(&lrp->options, "route_table",
> > "");
> > >              route_filter_tag = smap_get_def(&lrp->options,
> > > @@ -1745,7 +1794,7 @@ sync_learned_routes(struct ic_context *ctx,
> > >                               isb_route->nexthop);
> > >                  continue;
> > >              }
> > > -            if (!route_need_learn(ic_lr->lr, isb_route, &prefix, plen,
> > > +            if (!route_need_learn(ctx, ic_lr->lr, isb_route, &prefix,
> > plen,
> > >                                    &nb_global->options, lrp, &nexthop)) {
> > >                  continue;
> > >              }
> > > @@ -1816,7 +1865,8 @@ ad_route_sync_external_ids(const struct
> > ic_route_info *route_adv,
> > >      smap_get_uuid(&isb_route->external_ids, "lr-id", &isb_ext_lr_id);
> > >      nb_id = route_adv->nb_lb ? route_adv->nb_lb->header_.uuid :
> > >              route_adv->nb_route ? route_adv->nb_route->header_.uuid :
> > > -            route_adv->nb_lrp->header_.uuid;
> > > +            route_adv->nb_lrp ? route_adv->nb_lrp->header_.uuid :
> > > +            route_adv->nb_lr->header_.uuid;
> > >
> > >      lr_id = route_adv->nb_lr->header_.uuid;
> > >      if (!uuid_equals(&isb_ext_id, &nb_id)) {
> > > @@ -2008,6 +2058,26 @@ build_ts_routes_to_adv(struct ic_context *ctx,
> > >              }
> > >          }
> > >      }
> > > +
> > > +    const struct sbrec_datapath_binding *dp =
> > > +        find_dp_by_uuid(ctx->sbrec_datapath_binding_by_nb_uuid,
> > > +                        &lr->header_.uuid);
> > > +    if (!dp) {
> > > +        return;
> > > +    }
> > > +    const struct sbrec_learned_route_table *sbrec_learned_route_table =
> > > +
> > sbrec_learned_route_table_get(ctx->ovnsb_idl);
> > > +    const struct sbrec_learned_route *sb_route;
> > > +    SBREC_LEARNED_ROUTE_TABLE_FOR_EACH_SAFE (sb_route,
> > > +                                             sbrec_learned_route_table)
> > {
> > > +        if (uuid_equals(&sb_route->datapath->header_.uuid,
> > > +                        &dp->header_.uuid)) {
> > > +            add_network_to_routes_ad(routes_ad, sb_route->ip_prefix,
> > NULL,
> > > +                                     ts_port_addrs,
> > > +                                     &nb_global->options,
> > > +                                     lr, route_tag, ts_lrp);
> > > +        }
> > > +    }
> > >  }
> > >
> > >  static void
> > > @@ -3067,6 +3137,15 @@ main(int argc, char *argv[])
> > >      ovsdb_idl_add_column(ovnsb_idl_loop.idl,
> > >                           &sbrec_service_monitor_col_options);
> > >
> > > +    ovsdb_idl_add_table(ovnsb_idl_loop.idl, &sbrec_table_learned_route);
> > > +    ovsdb_idl_add_column(ovnsb_idl_loop.idl,
> > > +                         &sbrec_learned_route_col_nexthop);
> > > +    ovsdb_idl_add_column(ovnsb_idl_loop.idl,
> > > +                         &sbrec_learned_route_col_ip_prefix);
> > > +    ovsdb_idl_add_column(ovnsb_idl_loop.idl,
> > > +                         &sbrec_learned_route_col_logical_port);
> > > +    ovsdb_idl_add_column(ovnsb_idl_loop.idl,
> > > +                         &sbrec_learned_route_col_datapath);
> > >      /* Create IDL indexes */
> > >      struct ovsdb_idl_index *nbrec_ls_by_name
> > >          = ovsdb_idl_index_create1(ovnnb_idl_loop.idl,
> > > @@ -3080,6 +3159,9 @@ main(int argc, char *argv[])
> > >      struct ovsdb_idl_index *sbrec_port_binding_by_name
> > >          = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> > >                                    &sbrec_port_binding_col_logical_port);
> > > +    struct ovsdb_idl_index *sbrec_datapath_binding_by_nb_uuid
> > > +        = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> > > +                                  &sbrec_datapath_binding_col_nb_uuid);
> > >      struct ovsdb_idl_index *sbrec_chassis_by_name
> > >          = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> > >                                    &sbrec_chassis_col_name);
> > > @@ -3190,6 +3272,8 @@ main(int argc, char *argv[])
> > >                  .nbrec_lrp_by_name = nbrec_lrp_by_name,
> > >                  .nbrec_port_by_name = nbrec_port_by_name,
> > >                  .sbrec_port_binding_by_name =
> > sbrec_port_binding_by_name,
> > > +                .sbrec_datapath_binding_by_nb_uuid =
> > > +                    sbrec_datapath_binding_by_nb_uuid,
> > >                  .sbrec_chassis_by_name = sbrec_chassis_by_name,
> > >                  .sbrec_service_monitor_by_remote_type =
> > >                      sbrec_service_monitor_by_remote_type,
> > > diff --git a/tests/ovn-ic.at b/tests/ovn-ic.at
> > > index 368b6701b..cf280ea7b 100644
> > > --- a/tests/ovn-ic.at
> > > +++ b/tests/ovn-ic.at
> > > @@ -4047,3 +4047,133 @@ OVN_CLEANUP_IC([az1], [az2], [az3])
> > >  AT_CLEANUP
> > >  ])
> > >
> > > +OVN_FOR_EACH_NORTHD([
> > > +AT_SETUP([ovn-ic -- Check ovn-ic adv and learn from SB Learned Route])
> > > +
> > > +ovn_init_ic_db
> > > +
> > > +for i in 1 2; do
> > > +    ovn_start az$i
> > > +    ovn_as az$i
> > > +
> > > +    # Enable route learning at AZ level
> > > +    check ovn-nbctl set nb_global . options:ic-route-learn=true
> > > +    # Enable route advertising at AZ level
> > > +    check ovn-nbctl set nb_global . options:ic-route-adv=true
> > > +done
> > > +
> > > +# Create new transit switches and LRs. Test topology is next:
> > > +#
> > > +#
> >
> > I guess you can drop a new-line here.
> >
> > > +# logical router (lr11) - transit switch (ts11) - logical router (lr12)
> > > +#
> > > +#
> >
> > same here.
> >
> > > +
> > > +# Create lr11, lr12 and ts11 and connect them
> > > +for i in 1 2; do
> > > +    ovn_as az$i
> > > +
> > > +    lr=lr1$i
> > > +    check ovn-nbctl lr-add $lr
> > > +
> > > +    for j in 1; do
> >
> > you can drop the for here.
> >
> > > +        ts=ts1$j
> > > +        check ovn-ic-nbctl --wait=sb --may-exist ts-add $ts
> > > +
> > > +        lrp=lrp-$lr-$ts
> > > +        lsp=lsp-$ts-$lr
> > > +        # Create LRP and connect to TS
> > > +        check ovn-nbctl lrp-add $lr $lrp aa:aa:aa:aa:a$j:0$i
> > 169.254.10$j.$i/24
> > > +        check ovn-nbctl lsp-add $ts $lsp \
> > > +                -- lsp-set-addresses $lsp router \
> > > +                -- lsp-set-type $lsp router \
> > > +                -- lsp-set-options $lsp router-port=$lrp
> > > +    done
> > > +done
> > > +
> > > +# Create directly-connected route in lr11
> > > +check ovn_as az2 ovn-nbctl lrp-add lr12 lrp-lr12 aa:aa:aa:aa:bb:01 "
> > 192.168.0.1/24"
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +192.168.0.0/24 169.254.101.2
> > > +])
> > > +
> > > +ovn_as az2
> > > +check ovn-nbctl --wait=sb set Logical_Router lr12
> > option:dynamic-routing=true \
> > > +    option:dynamic-routing-redistribute="connected,static"
> > > +check ovn_as az2 ovn-nbctl --wait=sb lrp-add lr12 lr12-dr1
> > 00:00:00:00:ff:01 10.0.0.1/24
> > > +dr1=$(fetch_column port_binding _uuid logical_port=lr12-dr1)
> > > +datapath=$(fetch_column datapath_binding _uuid external_ids:name=lr12)
> > > +
> > > +check_uuid ovn-sbctl create Learned_Route \
> > > +    datapath=$datapath                    \
> > > +    logical_port=$dr1                     \
> > > +    ip_prefix=192.168.1.0/24              \
> > > +    nexthop=10.0.0.20
> > > +
> > > +# Check Learned_Route adv in ovn-ic
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +192.168.0.0/24 169.254.101.2
> > > +192.168.1.0/24 169.254.101.2
> > > +])
> > > +
> > > +ovn_as az2
> > > +learned=$(fetch_column Learned_Route _uuid ip_prefix=192.168.1.0/24)
> > > +check ovn-sbctl destroy Learned_Route $learned
> > > +
> > > +# Check Learned_Route removed is not adv and learned.
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +192.168.0.0/24 169.254.101.2
> > > +])
> > > +
> >
> > drop new-line here.
> >
> > > +
> > > +# Duplicate routes, SB learn route by two paths.
> > > +ovn_as az2
> > > +check_uuid ovn-sbctl create Learned_Route \
> > > +               datapath=$datapath         \
> > > +               logical_port=$dr1          \
> > > +               ip_prefix=192.168.1.0/24   \
> > > +               nexthop=10.0.0.20
> > > +
> > > +check ovn-nbctl --wait=sb lrp-add lr12 lr12-dr2 00:00:00:00:ff:02
> > 169.254.254.1/24
> > > +dr2=$(fetch_column port_binding _uuid logical_port=lr12-dr2)
> > > +
> > > +check_uuid ovn-sbctl create Learned_Route \
> > > +    datapath=$datapath                    \
> > > +    logical_port=$dr2                     \
> > > +    ip_prefix=192.168.1.0/24              \
> > > +    nexthop=169.254.254.3
> > > +
> > > +
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +192.168.0.0/24 169.254.101.2
> > > +192.168.1.0/24 169.254.101.2
> > > +])
> > > +
> > > +# Insert the same route Learned Route in the lr11 and don't learn by
> > ovn-ic.
> > > +ovn_as az1
> > > +datapath_lr11=$(fetch_column datapath_binding _uuid
> > external_ids:name=lr11)
> > > +check ovn-nbctl --wait=sb lrp-add lr11 lr11-dr1 00:00:00:00:ff:03
> > 169.254.254.2/24
> > > +sw1_dr1=$(fetch_column port_binding _uuid logical_port=lr11-dr1)
> > > +check_uuid ovn-sbctl create Learned_Route \
> > > +    datapath=$datapath_lr11               \
> > > +    logical_port=$sw1_dr1                 \
> > > +    ip_prefix=192.168.1.0/24              \
> > > +    nexthop=169.254.254.3
> > > +
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +192.168.0.0/24 169.254.101.2
> > > +])
> >
> > I guess you can check we are using the 'local' route here.
> >
> > > +
> > > +OVS_WAIT_FOR_OUTPUT([ovn_as az2 ovn-nbctl lr-route-list lr12 | grep
> > 192.168 |
> > > +             grep learned | awk '{print $1, $2}' | sort ], [0], [dnl
> > > +])
> > > +
> > > +OVN_CLEANUP_IC([az1], [az2])
> > > +
> > > +AT_CLEANUP
> > > +])
> > > --
> > > 2.34.1
> > >
> > >
> > > --
> > >
> > >
> > >
> > >
> > > _'Esta mensagem é direcionada apenas para os endereços constantes no
> > > cabeçalho inicial. Se você não está listado nos endereços constantes no
> > > cabeçalho, pedimos-lhe que desconsidere completamente o conteúdo dessa
> > > mensagem e cuja cópia, encaminhamento e/ou execução das ações citadas
> > estão
> > > imediatamente anuladas e proibidas'._
> > >
> > >
> > > * **'Apesar do Magazine Luiza tomar
> > > todas as precauções razoáveis para assegurar que nenhum vírus esteja
> > > presente nesse e-mail, a empresa não poderá aceitar a responsabilidade
> > por
> > > quaisquer perdas ou danos causados por esse e-mail ou por seus anexos'.*
> > >
> > >
> > >
> > > _______________________________________________
> > > dev mailing list
> > > [email protected]
> > > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> > >
> >
> 
> -- 
> 
> 
> 
> 
> _‘Esta mensagem é direcionada apenas para os endereços constantes no 
> cabeçalho inicial. Se você não está listado nos endereços constantes no 
> cabeçalho, pedimos-lhe que desconsidere completamente o conteúdo dessa 
> mensagem e cuja cópia, encaminhamento e/ou execução das ações citadas estão 
> imediatamente anuladas e proibidas’._
> 
> 
> * **‘Apesar do Magazine Luiza tomar 
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