diff mbox series

[ovs-dev,v2,3/3] Revert "northd: Introduce ECMP_Nexthop table in SB db.".

Message ID 51d819e85de37d50223aa6d4ee3e2f80e5eb8b0d.1724363517.git.lorenzo.bianconi@redhat.com
State Changes Requested
Headers show
Series Revert ECMP_Nexthop monitor support | expand

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Commit Message

Lorenzo Bianconi Aug. 22, 2024, 9:59 p.m. UTC
This reverts commit aeae21335a8bccbb9fe7746fcf4ed2d2a0e1c7a4.
Bump ovn-sb.ovsschema version to 20.37.0.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
 lib/ovn-util.h           |  2 --
 northd/en-northd.c       | 35 --------------------
 northd/en-northd.h       |  4 ---
 northd/inc-proc-northd.c |  7 +---
 northd/northd.c          | 70 ----------------------------------------
 northd/northd.h          | 10 ------
 ovn-sb.ovsschema         | 18 ++---------
 ovn-sb.xml               | 31 ------------------
 tests/ovn-northd.at      |  4 ---
 9 files changed, 3 insertions(+), 178 deletions(-)

Comments

Dumitru Ceara Aug. 26, 2024, 1:20 p.m. UTC | #1
Hi Lorenzo,

On 8/22/24 23:59, Lorenzo Bianconi wrote:
> This reverts commit aeae21335a8bccbb9fe7746fcf4ed2d2a0e1c7a4.
> Bump ovn-sb.ovsschema version to 20.37.0.
> 


This needs a minor rebase.

Same comment as for the first two patches in the series: please add some
information about why this is reverted.  I know you added it into the
cover letter but that doesn't get committed.

Please add a reference to our internal issue too:
https://issues.redhat.com/browse/FDP-750

Otherwise, this looks good to me.

Regards,
Dumitru

> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
> ---
>  lib/ovn-util.h           |  2 --
>  northd/en-northd.c       | 35 --------------------
>  northd/en-northd.h       |  4 ---
>  northd/inc-proc-northd.c |  7 +---
>  northd/northd.c          | 70 ----------------------------------------
>  northd/northd.h          | 10 ------
>  ovn-sb.ovsschema         | 18 ++---------
>  ovn-sb.xml               | 31 ------------------
>  tests/ovn-northd.at      |  4 ---
>  9 files changed, 3 insertions(+), 178 deletions(-)
> 
> diff --git a/lib/ovn-util.h b/lib/ovn-util.h
> index 622fec531..7b98b9b9a 100644
> --- a/lib/ovn-util.h
> +++ b/lib/ovn-util.h
> @@ -38,8 +38,6 @@
>  #define STT_TUNNEL_OVERHEAD 18
>  #define VXLAN_TUNNEL_OVERHEAD 30
>  
> -#define ECMP_NEXTHOP_IDS_LEN 65535
> -
>  struct eth_addr;
>  struct nbrec_logical_router_port;
>  struct ovsrec_flow_sample_collector_set_table;
> diff --git a/northd/en-northd.c b/northd/en-northd.c
> index 63f93bbf4..34f0a7df7 100644
> --- a/northd/en-northd.c
> +++ b/northd/en-northd.c
> @@ -404,25 +404,6 @@ en_bfd_sync_run(struct engine_node *node, void *data)
>      engine_set_node_state(node, EN_UPDATED);
>  }
>  
> -void
> -en_ecmp_nexthop_run(struct engine_node *node, void *data)
> -{
> -    const struct engine_context *eng_ctx = engine_get_context();
> -    struct static_routes_data *static_routes_data =
> -        engine_get_input_data("static_routes", node);
> -    struct ecmp_nexthop_data *enh_data = data;
> -    const struct sbrec_ecmp_nexthop_table *sbrec_ecmp_nexthop_table =
> -        EN_OVSDB_GET(engine_get_input("SB_ecmp_nexthop", node));
> -
> -    ecmp_nexthop_destroy(data);
> -    ecmp_nexthop_init(data);
> -    build_ecmp_nexthop_table(eng_ctx->ovnsb_idl_txn,
> -                             &static_routes_data->parsed_routes,
> -                             &enh_data->nexthops,
> -                             sbrec_ecmp_nexthop_table);
> -    engine_set_node_state(node, EN_UPDATED);
> -}
> -
>  void
>  *en_northd_init(struct engine_node *node OVS_UNUSED,
>                  struct engine_arg *arg OVS_UNUSED)
> @@ -473,16 +454,6 @@ void
>      return data;
>  }
>  
> -void
> -*en_ecmp_nexthop_init(struct engine_node *node OVS_UNUSED,
> -                      struct engine_arg *arg OVS_UNUSED)
> -{
> -    struct ecmp_nexthop_data *data = xzalloc(sizeof *data);
> -
> -    ecmp_nexthop_init(data);
> -    return data;
> -}
> -
>  void
>  en_northd_cleanup(void *data)
>  {
> @@ -555,9 +526,3 @@ en_bfd_sync_cleanup(void *data)
>  {
>      bfd_destroy(data);
>  }
> -
> -void
> -en_ecmp_nexthop_cleanup(void *data)
> -{
> -    ecmp_nexthop_destroy(data);
> -}
> diff --git a/northd/en-northd.h b/northd/en-northd.h
> index 2666cc67e..631a7c17a 100644
> --- a/northd/en-northd.h
> +++ b/northd/en-northd.h
> @@ -42,9 +42,5 @@ bool bfd_sync_northd_change_handler(struct engine_node *node,
>                                      void *data OVS_UNUSED);
>  void en_bfd_sync_run(struct engine_node *node, void *data);
>  void en_bfd_sync_cleanup(void *data OVS_UNUSED);
> -void en_ecmp_nexthop_run(struct engine_node *node, void *data);
> -void *en_ecmp_nexthop_init(struct engine_node *node OVS_UNUSED,
> -                           struct engine_arg *arg OVS_UNUSED);
> -void en_ecmp_nexthop_cleanup(void *data);
>  
>  #endif /* EN_NORTHD_H */
> diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
> index 06c7ee2b8..1f79916a5 100644
> --- a/northd/inc-proc-northd.c
> +++ b/northd/inc-proc-northd.c
> @@ -103,8 +103,7 @@ static unixctl_cb_func chassis_features_list;
>      SB_NODE(fdb, "fdb") \
>      SB_NODE(static_mac_binding, "static_mac_binding") \
>      SB_NODE(chassis_template_var, "chassis_template_var") \
> -    SB_NODE(logical_dp_group, "logical_dp_group") \
> -    SB_NODE(ecmp_nexthop, "ecmp_nexthop")
> +    SB_NODE(logical_dp_group, "logical_dp_group")
>  
>  enum sb_engine_node {
>  #define SB_NODE(NAME, NAME_STR) SB_##NAME,
> @@ -163,7 +162,6 @@ static ENGINE_NODE(route_policies, "route_policies");
>  static ENGINE_NODE(static_routes, "static_routes");
>  static ENGINE_NODE(bfd, "bfd");
>  static ENGINE_NODE(bfd_sync, "bfd_sync");
> -static ENGINE_NODE(ecmp_nexthop, "ecmp_nexthop");
>  
>  void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
>                            struct ovsdb_idl_loop *sb)
> @@ -266,9 +264,6 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
>      engine_add_input(&en_bfd_sync, &en_route_policies, NULL);
>      engine_add_input(&en_bfd_sync, &en_northd, bfd_sync_northd_change_handler);
>  
> -    engine_add_input(&en_ecmp_nexthop, &en_sb_ecmp_nexthop, NULL);
> -    engine_add_input(&en_ecmp_nexthop, &en_static_routes, NULL);
> -
>      engine_add_input(&en_sync_meters, &en_nb_acl, NULL);
>      engine_add_input(&en_sync_meters, &en_nb_meter, NULL);
>      engine_add_input(&en_sync_meters, &en_sb_meter, NULL);
> diff --git a/northd/northd.c b/northd/northd.c
> index 51ee5db1d..fb18fec90 100644
> --- a/northd/northd.c
> +++ b/northd/northd.c
> @@ -10670,64 +10670,6 @@ build_bfd_map(const struct nbrec_bfd_table *nbrec_bfd_table,
>      }
>  }
>  
> -void
> -build_ecmp_nexthop_table(
> -        struct ovsdb_idl_txn *ovnsb_txn,
> -        struct hmap *routes,
> -        struct simap *nexthops,
> -        const struct sbrec_ecmp_nexthop_table *sbrec_ecmp_nexthop_table)
> -{
> -    if (!ovnsb_txn) {
> -        return;
> -    }
> -
> -    unsigned long *nexthop_ids = bitmap_allocate(ECMP_NEXTHOP_IDS_LEN);
> -    const struct sbrec_ecmp_nexthop *sb_ecmp_nexthop;
> -    SBREC_ECMP_NEXTHOP_TABLE_FOR_EACH (sb_ecmp_nexthop,
> -                                       sbrec_ecmp_nexthop_table) {
> -        simap_put(nexthops, sb_ecmp_nexthop->nexthop,
> -                  sb_ecmp_nexthop->id);
> -        bitmap_set1(nexthop_ids, sb_ecmp_nexthop->id);
> -    }
> -
> -    struct sset nb_nexthops_sset = SSET_INITIALIZER(&nb_nexthops_sset);
> -
> -    struct parsed_route *pr;
> -    HMAP_FOR_EACH (pr, key_node, routes) {
> -        if (!pr->ecmp_symmetric_reply) {
> -            continue;
> -        }
> -
> -        const struct nbrec_logical_router_static_route *r = pr->route;
> -        if (!simap_contains(nexthops, r->nexthop)) {
> -            int id = bitmap_scan(nexthop_ids, 0, 1, ECMP_NEXTHOP_IDS_LEN);
> -            if (id == ECMP_NEXTHOP_IDS_LEN) {
> -                static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
> -                VLOG_WARN_RL(&rl, "nexthop id address space is exhausted");
> -                continue;
> -            }
> -            bitmap_set1(nexthop_ids, id);
> -            simap_put(nexthops, r->nexthop, id);
> -
> -            sb_ecmp_nexthop = sbrec_ecmp_nexthop_insert(ovnsb_txn);
> -            sbrec_ecmp_nexthop_set_nexthop(sb_ecmp_nexthop, r->nexthop);
> -            sbrec_ecmp_nexthop_set_id(sb_ecmp_nexthop, id);
> -        }
> -        sset_add(&nb_nexthops_sset, r->nexthop);
> -    }
> -
> -    SBREC_ECMP_NEXTHOP_TABLE_FOR_EACH_SAFE (sb_ecmp_nexthop,
> -                                            sbrec_ecmp_nexthop_table) {
> -        if (!sset_contains(&nb_nexthops_sset, sb_ecmp_nexthop->nexthop)) {
> -            simap_find_and_delete(nexthops, sb_ecmp_nexthop->nexthop);
> -            sbrec_ecmp_nexthop_delete(sb_ecmp_nexthop);
> -        }
> -    }
> -
> -    sset_destroy(&nb_nexthops_sset);
> -    bitmap_free(nexthop_ids);
> -}
> -
>  /* Returns a string of the IP address of the router port 'op' that
>   * overlaps with 'ip_s".  If one is not found, returns NULL.
>   *
> @@ -18781,12 +18723,6 @@ bfd_init(struct bfd_data *data)
>      hmap_init(&data->bfd_connections);
>  }
>  
> -void
> -ecmp_nexthop_init(struct ecmp_nexthop_data *data)
> -{
> -    simap_init(&data->nexthops);
> -}
> -
>  void
>  northd_destroy(struct northd_data *data)
>  {
> @@ -18868,12 +18804,6 @@ static_routes_destroy(struct static_routes_data *data)
>      __bfd_destroy(&data->bfd_active_connections);
>  }
>  
> -void
> -ecmp_nexthop_destroy(struct ecmp_nexthop_data *data)
> -{
> -    simap_destroy(&data->nexthops);
> -}
> -
>  void
>  ovnnb_db_run(struct northd_input *input_data,
>               struct northd_data *data,
> diff --git a/northd/northd.h b/northd/northd.h
> index afd5f7113..9e326b746 100644
> --- a/northd/northd.h
> +++ b/northd/northd.h
> @@ -195,10 +195,6 @@ struct bfd_data {
>      struct hmap bfd_connections;
>  };
>  
> -struct ecmp_nexthop_data {
> -    struct simap nexthops;
> -};
> -
>  struct lr_nat_table;
>  
>  struct lflow_input {
> @@ -742,12 +738,6 @@ void static_routes_destroy(struct static_routes_data *);
>  void bfd_init(struct bfd_data *);
>  void bfd_destroy(struct bfd_data *);
>  
> -void build_ecmp_nexthop_table(struct ovsdb_idl_txn *,
> -                              struct hmap *, struct simap *,
> -                              const struct sbrec_ecmp_nexthop_table *);
> -void ecmp_nexthop_init(struct ecmp_nexthop_data *);
> -void ecmp_nexthop_destroy(struct ecmp_nexthop_data *);
> -
>  struct lflow_table;
>  struct lr_stateful_tracked_data;
>  struct ls_stateful_tracked_data;
> diff --git a/ovn-sb.ovsschema b/ovn-sb.ovsschema
> index 9d8e0ac46..73abf2c8d 100644
> --- a/ovn-sb.ovsschema
> +++ b/ovn-sb.ovsschema
> @@ -1,7 +1,7 @@
>  {
>      "name": "OVN_Southbound",
> -    "version": "20.36.0",
> -    "cksum": "1845967275 32154",
> +    "version": "20.37.0",
> +    "cksum": "1950136776 31493",
>      "tables": {
>          "SB_Global": {
>              "columns": {
> @@ -610,20 +610,6 @@
>                                            "refTable": "Datapath_Binding"}}}},
>              "indexes": [["logical_port", "ip"]],
>              "isRoot": true},
> -        "ECMP_Nexthop": {
> -            "columns": {
> -                "nexthop": {"type": "string"},
> -                "id": {"type": {"key": {"type": "integer",
> -                                        "minInteger": 0,
> -                                        "maxInteger": 65535}}},
> -                "external_ids": {
> -                    "type": {"key": "string", "value": "string",
> -                             "min": 0, "max": "unlimited"}},
> -                "options": {
> -                    "type": {"key": "string", "value": "string",
> -                             "min": 0, "max": "unlimited"}}},
> -            "indexes": [["nexthop"]],
> -            "isRoot": true},
>          "Chassis_Template_Var": {
>              "columns": {
>                  "chassis": {"type": "string"},
> diff --git a/ovn-sb.xml b/ovn-sb.xml
> index c11296d7c..746cc6308 100644
> --- a/ovn-sb.xml
> +++ b/ovn-sb.xml
> @@ -5178,35 +5178,4 @@ tcp.flags = RST;
>        The set of variable values for a given chassis.
>      </column>
>    </table>
> -
> -  <table name="ECMP_Nexthop">
> -    <p>
> -      Each record in this table represents an active ECMP route committed by
> -      <code>ovn-northd</code> to <code>ovs</code> connection-tracking table.
> -      <code>ECMP_Nexthop</code> table is used by <code>ovn-controller</code>
> -      to track active ct entries and to flush stale ones.
> -    </p>
> -    <column name="nexthop">
> -      <p>
> -        Nexthop IP address for this ECMP route. Nexthop IP address should
> -        be the IP address of a connected router port or the IP address of
> -        an external device used as nexthop for the given destination.
> -      </p>
> -    </column>
> -
> -    <column name="id">
> -      <p>
> -        Nexthop unique identifier. Nexthop ID is used to track active
> -        ecmp-symmetric-reply connections and flush stale ones.
> -      </p>
> -    </column>
> -
> -    <column name="options">
> -      Reserved for future use.
> -    </column>
> -
> -    <column name="external_ids">
> -      See <em>External IDs</em> at the beginning of this document.
> -    </column>
> -  </table>
>  </database>
> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> index 93ccbce6b..fddf222b3 100644
> --- a/tests/ovn-northd.at
> +++ b/tests/ovn-northd.at
> @@ -6800,7 +6800,6 @@ check ovn-nbctl lsp-set-addresses public-lr0 router
>  check ovn-nbctl lsp-set-options public-lr0 router-port=lr0-public
>  
>  check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.0.10
> -check_row_count ECMP_Nexthop 1
>  
>  ovn-sbctl dump-flows lr0 > lr0flows
>  
> @@ -6818,7 +6817,6 @@ AT_CHECK([grep -e "lr_in_ip_routing_ecmp" lr0flows | ovn_strip_lflows], [0], [dn
>  ])
>  
>  check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.0.20
> -check_row_count ECMP_Nexthop 2
>  
>  ovn-sbctl dump-flows lr0 > lr0flows
>  AT_CHECK([grep -w "lr_in_ip_routing" lr0flows | ovn_strip_lflows], [0], [dnl
> @@ -6848,7 +6846,6 @@ AT_CHECK([grep -e "lr_in_arp_resolve.*ecmp" lr0flows | ovn_strip_lflows], [0], [
>  
>  # add ecmp route with wrong nexthop
>  check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.1.20
> -check_row_count ECMP_Nexthop 2
>  
>  ovn-sbctl dump-flows lr0 > lr0flows
>  AT_CHECK([grep -w "lr_in_ip_routing" lr0flows | ovn_strip_lflows], [0], [dnl
> @@ -6868,7 +6865,6 @@ AT_CHECK([grep -e "lr_in_ip_routing_ecmp" lr0flows | sed 's/192\.168\.0\..0/192.
>  
>  check ovn-nbctl lr-route-del lr0
>  wait_row_count nb:Logical_Router_Static_Route 0
> -check_row_count ECMP_Nexthop 0
>  
>  check ovn-nbctl --wait=sb lr-route-add lr0 1.0.0.0/24 192.168.0.10
>  ovn-sbctl dump-flows lr0 > lr0flows
diff mbox series

Patch

diff --git a/lib/ovn-util.h b/lib/ovn-util.h
index 622fec531..7b98b9b9a 100644
--- a/lib/ovn-util.h
+++ b/lib/ovn-util.h
@@ -38,8 +38,6 @@ 
 #define STT_TUNNEL_OVERHEAD 18
 #define VXLAN_TUNNEL_OVERHEAD 30
 
-#define ECMP_NEXTHOP_IDS_LEN 65535
-
 struct eth_addr;
 struct nbrec_logical_router_port;
 struct ovsrec_flow_sample_collector_set_table;
diff --git a/northd/en-northd.c b/northd/en-northd.c
index 63f93bbf4..34f0a7df7 100644
--- a/northd/en-northd.c
+++ b/northd/en-northd.c
@@ -404,25 +404,6 @@  en_bfd_sync_run(struct engine_node *node, void *data)
     engine_set_node_state(node, EN_UPDATED);
 }
 
-void
-en_ecmp_nexthop_run(struct engine_node *node, void *data)
-{
-    const struct engine_context *eng_ctx = engine_get_context();
-    struct static_routes_data *static_routes_data =
-        engine_get_input_data("static_routes", node);
-    struct ecmp_nexthop_data *enh_data = data;
-    const struct sbrec_ecmp_nexthop_table *sbrec_ecmp_nexthop_table =
-        EN_OVSDB_GET(engine_get_input("SB_ecmp_nexthop", node));
-
-    ecmp_nexthop_destroy(data);
-    ecmp_nexthop_init(data);
-    build_ecmp_nexthop_table(eng_ctx->ovnsb_idl_txn,
-                             &static_routes_data->parsed_routes,
-                             &enh_data->nexthops,
-                             sbrec_ecmp_nexthop_table);
-    engine_set_node_state(node, EN_UPDATED);
-}
-
 void
 *en_northd_init(struct engine_node *node OVS_UNUSED,
                 struct engine_arg *arg OVS_UNUSED)
@@ -473,16 +454,6 @@  void
     return data;
 }
 
-void
-*en_ecmp_nexthop_init(struct engine_node *node OVS_UNUSED,
-                      struct engine_arg *arg OVS_UNUSED)
-{
-    struct ecmp_nexthop_data *data = xzalloc(sizeof *data);
-
-    ecmp_nexthop_init(data);
-    return data;
-}
-
 void
 en_northd_cleanup(void *data)
 {
@@ -555,9 +526,3 @@  en_bfd_sync_cleanup(void *data)
 {
     bfd_destroy(data);
 }
-
-void
-en_ecmp_nexthop_cleanup(void *data)
-{
-    ecmp_nexthop_destroy(data);
-}
diff --git a/northd/en-northd.h b/northd/en-northd.h
index 2666cc67e..631a7c17a 100644
--- a/northd/en-northd.h
+++ b/northd/en-northd.h
@@ -42,9 +42,5 @@  bool bfd_sync_northd_change_handler(struct engine_node *node,
                                     void *data OVS_UNUSED);
 void en_bfd_sync_run(struct engine_node *node, void *data);
 void en_bfd_sync_cleanup(void *data OVS_UNUSED);
-void en_ecmp_nexthop_run(struct engine_node *node, void *data);
-void *en_ecmp_nexthop_init(struct engine_node *node OVS_UNUSED,
-                           struct engine_arg *arg OVS_UNUSED);
-void en_ecmp_nexthop_cleanup(void *data);
 
 #endif /* EN_NORTHD_H */
diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
index 06c7ee2b8..1f79916a5 100644
--- a/northd/inc-proc-northd.c
+++ b/northd/inc-proc-northd.c
@@ -103,8 +103,7 @@  static unixctl_cb_func chassis_features_list;
     SB_NODE(fdb, "fdb") \
     SB_NODE(static_mac_binding, "static_mac_binding") \
     SB_NODE(chassis_template_var, "chassis_template_var") \
-    SB_NODE(logical_dp_group, "logical_dp_group") \
-    SB_NODE(ecmp_nexthop, "ecmp_nexthop")
+    SB_NODE(logical_dp_group, "logical_dp_group")
 
 enum sb_engine_node {
 #define SB_NODE(NAME, NAME_STR) SB_##NAME,
@@ -163,7 +162,6 @@  static ENGINE_NODE(route_policies, "route_policies");
 static ENGINE_NODE(static_routes, "static_routes");
 static ENGINE_NODE(bfd, "bfd");
 static ENGINE_NODE(bfd_sync, "bfd_sync");
-static ENGINE_NODE(ecmp_nexthop, "ecmp_nexthop");
 
 void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
                           struct ovsdb_idl_loop *sb)
@@ -266,9 +264,6 @@  void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
     engine_add_input(&en_bfd_sync, &en_route_policies, NULL);
     engine_add_input(&en_bfd_sync, &en_northd, bfd_sync_northd_change_handler);
 
-    engine_add_input(&en_ecmp_nexthop, &en_sb_ecmp_nexthop, NULL);
-    engine_add_input(&en_ecmp_nexthop, &en_static_routes, NULL);
-
     engine_add_input(&en_sync_meters, &en_nb_acl, NULL);
     engine_add_input(&en_sync_meters, &en_nb_meter, NULL);
     engine_add_input(&en_sync_meters, &en_sb_meter, NULL);
diff --git a/northd/northd.c b/northd/northd.c
index 51ee5db1d..fb18fec90 100644
--- a/northd/northd.c
+++ b/northd/northd.c
@@ -10670,64 +10670,6 @@  build_bfd_map(const struct nbrec_bfd_table *nbrec_bfd_table,
     }
 }
 
-void
-build_ecmp_nexthop_table(
-        struct ovsdb_idl_txn *ovnsb_txn,
-        struct hmap *routes,
-        struct simap *nexthops,
-        const struct sbrec_ecmp_nexthop_table *sbrec_ecmp_nexthop_table)
-{
-    if (!ovnsb_txn) {
-        return;
-    }
-
-    unsigned long *nexthop_ids = bitmap_allocate(ECMP_NEXTHOP_IDS_LEN);
-    const struct sbrec_ecmp_nexthop *sb_ecmp_nexthop;
-    SBREC_ECMP_NEXTHOP_TABLE_FOR_EACH (sb_ecmp_nexthop,
-                                       sbrec_ecmp_nexthop_table) {
-        simap_put(nexthops, sb_ecmp_nexthop->nexthop,
-                  sb_ecmp_nexthop->id);
-        bitmap_set1(nexthop_ids, sb_ecmp_nexthop->id);
-    }
-
-    struct sset nb_nexthops_sset = SSET_INITIALIZER(&nb_nexthops_sset);
-
-    struct parsed_route *pr;
-    HMAP_FOR_EACH (pr, key_node, routes) {
-        if (!pr->ecmp_symmetric_reply) {
-            continue;
-        }
-
-        const struct nbrec_logical_router_static_route *r = pr->route;
-        if (!simap_contains(nexthops, r->nexthop)) {
-            int id = bitmap_scan(nexthop_ids, 0, 1, ECMP_NEXTHOP_IDS_LEN);
-            if (id == ECMP_NEXTHOP_IDS_LEN) {
-                static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
-                VLOG_WARN_RL(&rl, "nexthop id address space is exhausted");
-                continue;
-            }
-            bitmap_set1(nexthop_ids, id);
-            simap_put(nexthops, r->nexthop, id);
-
-            sb_ecmp_nexthop = sbrec_ecmp_nexthop_insert(ovnsb_txn);
-            sbrec_ecmp_nexthop_set_nexthop(sb_ecmp_nexthop, r->nexthop);
-            sbrec_ecmp_nexthop_set_id(sb_ecmp_nexthop, id);
-        }
-        sset_add(&nb_nexthops_sset, r->nexthop);
-    }
-
-    SBREC_ECMP_NEXTHOP_TABLE_FOR_EACH_SAFE (sb_ecmp_nexthop,
-                                            sbrec_ecmp_nexthop_table) {
-        if (!sset_contains(&nb_nexthops_sset, sb_ecmp_nexthop->nexthop)) {
-            simap_find_and_delete(nexthops, sb_ecmp_nexthop->nexthop);
-            sbrec_ecmp_nexthop_delete(sb_ecmp_nexthop);
-        }
-    }
-
-    sset_destroy(&nb_nexthops_sset);
-    bitmap_free(nexthop_ids);
-}
-
 /* Returns a string of the IP address of the router port 'op' that
  * overlaps with 'ip_s".  If one is not found, returns NULL.
  *
@@ -18781,12 +18723,6 @@  bfd_init(struct bfd_data *data)
     hmap_init(&data->bfd_connections);
 }
 
-void
-ecmp_nexthop_init(struct ecmp_nexthop_data *data)
-{
-    simap_init(&data->nexthops);
-}
-
 void
 northd_destroy(struct northd_data *data)
 {
@@ -18868,12 +18804,6 @@  static_routes_destroy(struct static_routes_data *data)
     __bfd_destroy(&data->bfd_active_connections);
 }
 
-void
-ecmp_nexthop_destroy(struct ecmp_nexthop_data *data)
-{
-    simap_destroy(&data->nexthops);
-}
-
 void
 ovnnb_db_run(struct northd_input *input_data,
              struct northd_data *data,
diff --git a/northd/northd.h b/northd/northd.h
index afd5f7113..9e326b746 100644
--- a/northd/northd.h
+++ b/northd/northd.h
@@ -195,10 +195,6 @@  struct bfd_data {
     struct hmap bfd_connections;
 };
 
-struct ecmp_nexthop_data {
-    struct simap nexthops;
-};
-
 struct lr_nat_table;
 
 struct lflow_input {
@@ -742,12 +738,6 @@  void static_routes_destroy(struct static_routes_data *);
 void bfd_init(struct bfd_data *);
 void bfd_destroy(struct bfd_data *);
 
-void build_ecmp_nexthop_table(struct ovsdb_idl_txn *,
-                              struct hmap *, struct simap *,
-                              const struct sbrec_ecmp_nexthop_table *);
-void ecmp_nexthop_init(struct ecmp_nexthop_data *);
-void ecmp_nexthop_destroy(struct ecmp_nexthop_data *);
-
 struct lflow_table;
 struct lr_stateful_tracked_data;
 struct ls_stateful_tracked_data;
diff --git a/ovn-sb.ovsschema b/ovn-sb.ovsschema
index 9d8e0ac46..73abf2c8d 100644
--- a/ovn-sb.ovsschema
+++ b/ovn-sb.ovsschema
@@ -1,7 +1,7 @@ 
 {
     "name": "OVN_Southbound",
-    "version": "20.36.0",
-    "cksum": "1845967275 32154",
+    "version": "20.37.0",
+    "cksum": "1950136776 31493",
     "tables": {
         "SB_Global": {
             "columns": {
@@ -610,20 +610,6 @@ 
                                           "refTable": "Datapath_Binding"}}}},
             "indexes": [["logical_port", "ip"]],
             "isRoot": true},
-        "ECMP_Nexthop": {
-            "columns": {
-                "nexthop": {"type": "string"},
-                "id": {"type": {"key": {"type": "integer",
-                                        "minInteger": 0,
-                                        "maxInteger": 65535}}},
-                "external_ids": {
-                    "type": {"key": "string", "value": "string",
-                             "min": 0, "max": "unlimited"}},
-                "options": {
-                    "type": {"key": "string", "value": "string",
-                             "min": 0, "max": "unlimited"}}},
-            "indexes": [["nexthop"]],
-            "isRoot": true},
         "Chassis_Template_Var": {
             "columns": {
                 "chassis": {"type": "string"},
diff --git a/ovn-sb.xml b/ovn-sb.xml
index c11296d7c..746cc6308 100644
--- a/ovn-sb.xml
+++ b/ovn-sb.xml
@@ -5178,35 +5178,4 @@  tcp.flags = RST;
       The set of variable values for a given chassis.
     </column>
   </table>
-
-  <table name="ECMP_Nexthop">
-    <p>
-      Each record in this table represents an active ECMP route committed by
-      <code>ovn-northd</code> to <code>ovs</code> connection-tracking table.
-      <code>ECMP_Nexthop</code> table is used by <code>ovn-controller</code>
-      to track active ct entries and to flush stale ones.
-    </p>
-    <column name="nexthop">
-      <p>
-        Nexthop IP address for this ECMP route. Nexthop IP address should
-        be the IP address of a connected router port or the IP address of
-        an external device used as nexthop for the given destination.
-      </p>
-    </column>
-
-    <column name="id">
-      <p>
-        Nexthop unique identifier. Nexthop ID is used to track active
-        ecmp-symmetric-reply connections and flush stale ones.
-      </p>
-    </column>
-
-    <column name="options">
-      Reserved for future use.
-    </column>
-
-    <column name="external_ids">
-      See <em>External IDs</em> at the beginning of this document.
-    </column>
-  </table>
 </database>
diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
index 93ccbce6b..fddf222b3 100644
--- a/tests/ovn-northd.at
+++ b/tests/ovn-northd.at
@@ -6800,7 +6800,6 @@  check ovn-nbctl lsp-set-addresses public-lr0 router
 check ovn-nbctl lsp-set-options public-lr0 router-port=lr0-public
 
 check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.0.10
-check_row_count ECMP_Nexthop 1
 
 ovn-sbctl dump-flows lr0 > lr0flows
 
@@ -6818,7 +6817,6 @@  AT_CHECK([grep -e "lr_in_ip_routing_ecmp" lr0flows | ovn_strip_lflows], [0], [dn
 ])
 
 check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.0.20
-check_row_count ECMP_Nexthop 2
 
 ovn-sbctl dump-flows lr0 > lr0flows
 AT_CHECK([grep -w "lr_in_ip_routing" lr0flows | ovn_strip_lflows], [0], [dnl
@@ -6848,7 +6846,6 @@  AT_CHECK([grep -e "lr_in_arp_resolve.*ecmp" lr0flows | ovn_strip_lflows], [0], [
 
 # add ecmp route with wrong nexthop
 check ovn-nbctl --wait=sb --ecmp-symmetric-reply lr-route-add lr0 1.0.0.1 192.168.1.20
-check_row_count ECMP_Nexthop 2
 
 ovn-sbctl dump-flows lr0 > lr0flows
 AT_CHECK([grep -w "lr_in_ip_routing" lr0flows | ovn_strip_lflows], [0], [dnl
@@ -6868,7 +6865,6 @@  AT_CHECK([grep -e "lr_in_ip_routing_ecmp" lr0flows | sed 's/192\.168\.0\..0/192.
 
 check ovn-nbctl lr-route-del lr0
 wait_row_count nb:Logical_Router_Static_Route 0
-check_row_count ECMP_Nexthop 0
 
 check ovn-nbctl --wait=sb lr-route-add lr0 1.0.0.0/24 192.168.0.10
 ovn-sbctl dump-flows lr0 > lr0flows