On Mon, Jul 29, 2024 at 2:41 AM Ales Musil <amu...@redhat.com> wrote:
>
> Add support for limiting the CT zone usage per Ls, LR or LSP.
> When the limit is configured on logical switch it will also implicitly
> set limits for all ports in that logical switch. The port configuration
> can be overwritten individually and has priority over the whole logical
> switch configuration.
>
> The value 0 means unlimited, when the value is not specified it is
> derived from OvS default CT limit specified for given OvS datapath.
>
> Reported-at: https://bugzilla.redhat.com/2189924
> Signed-off-by: Ales Musil <amu...@redhat.com>
> ---
> v7: Rebase on top of latest main.
> v6: Rebase on top of latest main.
>     Addressed comments from Mark:
>     - Fix spelling error in the documenation.
>     Addressed comments from Numan:
>     - Avoid looping over all interface and loop over local ones only.
>     - Do not loop over interfaces when the DP limit didn't change.
> v5: Rebase on top of latest main.
>     Avoid OvS CT zone lookup in every loop of pending commit.
> v4: Rebase on top of latest main.
>     Change naming of the ct_zone_limit_sync to avoid potential confusion as 
> suggested by Lorenzo.
> v3: Rebase on top of latest main.
> ---

Thanks for the patch series.  I did some very small changes and applied to main.

----
diff --git a/ovn-nb.xml b/ovn-nb.xml
index 7087c0cf22..6a2b964ace 100644
--- a/ovn-nb.xml
+++ b/ovn-nb.xml
@@ -749,7 +749,8 @@
       </column>

       <column name="other_config" key="ct-zone-limit"
-              type='{"type": "integer", "minInteger": 0,
"maxInteger": 4294967295}'>
+              type='{"type": "integer", "minInteger": 0,
+                     "maxInteger": 4294967295}'>
         CT zone <code>limit</code> value for given
         <ref table="Logical_Switch"/>. This value will be propagated to all
         <ref table="Logical_Switch_Port"/> when configured, but can be
@@ -1160,7 +1161,8 @@
         </column>

         <column name="options" key="ct-zone-limit"
-                type='{"type": "integer", "minInteger": 0,
"maxInteger": 4294967295}'>
+                type='{"type": "integer", "minInteger": 0,
+                       "maxInteger": 4294967295}'>
           CT zone <code>limit</code> value for given
           <ref table="Logical_Switch_Port"/>. This value has priority over
           limit specified on <ref table="Logical_Switch"/> when configured.
@@ -2834,9 +2836,10 @@ or
       </column>

       <column name="options" key="ct-zone-limit"
-              type='{"type": "integer", "minInteger": 0,
"maxInteger": 4294967295}'>
+              type='{"type": "integer", "minInteger": 0,
+                     "maxInteger": 4294967295}'>
         CT zone <code>limit</code> value for given
-        <ref table="Logical_Router"/>. The value 0 means unlimited, when the
+        <ref table="Logical_Router"/>. The value 0 means unlimited. When the
         option is not present the limit is not set and the zone limit is
         derived from OvS default datapath limit.
-----

Numan

>  NEWS                        |   3 +
>  controller/ct-zone.c        | 181 ++++++++++++++++++++++++++++++++----
>  controller/ct-zone.h        |  15 ++-
>  controller/ovn-controller.c |  19 ++--
>  lib/ovn-util.c              |  17 ++++
>  lib/ovn-util.h              |   3 +
>  northd/northd.c             |   8 ++
>  ovn-nb.xml                  |  29 ++++++
>  tests/ovn-controller.at     |  99 ++++++++++++++++++++
>  9 files changed, 346 insertions(+), 28 deletions(-)
>
> diff --git a/NEWS b/NEWS
> index 15c4c788a..87e326f21 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -44,6 +44,9 @@ Post v24.03.0
>      localnet port.
>    - Added support to define boundaries (min and max values) for selected ct
>      zones.
> +  - Add support for CT zone limit that can be specified per LR
> +    (options:ct-zone-limit), LS (other_config:ct-zone-limit) or LSP
> +    (options:ct-zone-limit).
>
>  OVN v24.03.0 - 01 Mar 2024
>  --------------------------
> diff --git a/controller/ct-zone.c b/controller/ct-zone.c
> index f19883831..0a5d3d410 100644
> --- a/controller/ct-zone.c
> +++ b/controller/ct-zone.c
> @@ -16,6 +16,7 @@
>  #include <config.h>
>  #include <errno.h>
>
> +#include "binding.h"
>  #include "chassis.h"
>  #include "ct-zone.h"
>  #include "local_data.h"
> @@ -37,6 +38,16 @@ static bool ct_zone_assign_unused(struct ct_zone_ctx *ctx,
>  static bool ct_zone_remove(struct ct_zone_ctx *ctx, const char *name);
>  static void ct_zone_add(struct ct_zone_ctx *ctx, const char *name,
>                          uint16_t zone, bool set_pending);
> +static void
> +ct_zone_limits_update_per_dp(struct ct_zone_ctx *ctx,
> +                             const struct local_datapath *local_dp,
> +                             const struct shash *local_lports,
> +                             const char *name);
> +static bool ct_zone_limit_update(struct ct_zone_ctx *ctx, const char *name,
> +                                 int64_t limit);
> +static int64_t ct_zone_get_dp_limit(const struct sbrec_datapath_binding *dp);
> +static int64_t ct_zone_get_pb_limit(const struct sbrec_port_binding *pb);
> +static int64_t ct_zone_limit_normalize(int64_t limit);
>
>  void
>  ct_zone_ctx_init(struct ct_zone_ctx *ctx)
> @@ -265,11 +276,24 @@ ct_zones_update(const struct sset *local_lports,
>
>  void
>  ct_zones_commit(const struct ovsrec_bridge *br_int,
> -                struct shash *pending_ct_zones)
> +                const struct ovsrec_datapath *ovs_dp,
> +                struct ovsdb_idl_txn *ovs_idl_txn,
> +                struct ct_zone_ctx *ctx)
>  {
> +    if (shash_is_empty(&ctx->pending)) {
> +        return;
> +    }
> +
> +    struct ovsrec_ct_zone **all_zones =
> +            xzalloc(sizeof *all_zones * (MAX_CT_ZONES + 1));
> +    for (size_t i = 0; i < ovs_dp->n_ct_zones; i++) {
> +        all_zones[ovs_dp->key_ct_zones[i]] = ovs_dp->value_ct_zones[i];
> +    }
> +
>      struct shash_node *iter;
> -    SHASH_FOR_EACH (iter, pending_ct_zones) {
> +    SHASH_FOR_EACH (iter, &ctx->pending) {
>          struct ct_zone_pending_entry *ctzpe = iter->data;
> +        struct ct_zone *ct_zone = &ctzpe->ct_zone;
>
>          /* The transaction is open, so any pending entries in the
>           * CT_ZONE_DB_QUEUED must be sent and any in CT_ZONE_DB_QUEUED
> @@ -281,7 +305,7 @@ ct_zones_commit(const struct ovsrec_bridge *br_int,
>
>          char *user_str = xasprintf("ct-zone-%s", iter->name);
>          if (ctzpe->add) {
> -            char *zone_str = xasprintf("%"PRIu16, ctzpe->ct_zone.zone);
> +            char *zone_str = xasprintf("%"PRIu16, ct_zone->zone);
>              struct smap_node *node =
>                      smap_get_node(&br_int->external_ids, user_str);
>              if (!node || strcmp(node->value, zone_str)) {
> @@ -296,8 +320,22 @@ ct_zones_commit(const struct ovsrec_bridge *br_int,
>          }
>          free(user_str);
>
> +        struct ovsrec_ct_zone *ovs_zone = all_zones[ct_zone->zone];
> +        if ((!ctzpe->add || ct_zone->limit < 0) && ovs_zone) {
> +            ovsrec_datapath_update_ct_zones_delkey(ovs_dp, ct_zone->zone);
> +        } else if (ctzpe->add && ct_zone->limit >= 0) {
> +            if (!ovs_zone) {
> +                ovs_zone = ovsrec_ct_zone_insert(ovs_idl_txn);
> +                ovsrec_datapath_update_ct_zones_setkey(ovs_dp, ct_zone->zone,
> +                                                       ovs_zone);
> +            }
> +            ovsrec_ct_zone_set_limit(ovs_zone, &ct_zone->limit, 1);
> +        }
> +
>          ctzpe->state = CT_ZONE_DB_SENT;
>      }
> +
> +    free(all_zones);
>  }
>
>  void
> @@ -316,9 +354,21 @@ ct_zones_pending_clear_commited(struct shash *pending)
>  /* Returns "true" when there is no need for full recompute. */
>  bool
>  ct_zone_handle_dp_update(struct ct_zone_ctx *ctx,
> -                         const struct sbrec_datapath_binding *dp)
> +                         const struct local_datapath *local_dp,
> +                         const struct shash *local_lports)
>  {
> -    int req_snat_zone = ct_zone_get_snat(dp);
> +    const char *name = smap_get(&local_dp->datapath->external_ids, "name");
> +    if (!name) {
> +        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
> +        VLOG_ERR_RL(&rl, "Missing name for datapath '"UUID_FMT"' skipping"
> +                    "zone check.",
> +                    UUID_ARGS(&local_dp->datapath->header_.uuid));
> +        return true;
> +    }
> +
> +    ct_zone_limits_update_per_dp(ctx, local_dp, local_lports, name);
> +
> +    int req_snat_zone = ct_zone_get_snat(local_dp->datapath);
>      if (req_snat_zone == -1) {
>          /* datapath snat ct zone is not set.  This condition will also hit
>           * when CMS clears the snat-ct-zone for the logical router.
> @@ -328,14 +378,6 @@ ct_zone_handle_dp_update(struct ct_zone_ctx *ctx,
>          return true;
>      }
>
> -    const char *name = smap_get(&dp->external_ids, "name");
> -    if (!name) {
> -        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
> -        VLOG_ERR_RL(&rl, "Missing name for datapath '"UUID_FMT"' skipping"
> -                    "zone check.", UUID_ARGS(&dp->header_.uuid));
> -        return true;
> -    }
> -
>      /* Check if the requested snat zone has changed for the datapath
>       * or not.  If so, then fall back to full recompute of
>       * ct_zone engine. */
> @@ -359,11 +401,12 @@ ct_zone_handle_dp_update(struct ct_zone_ctx *ctx,
>
>  /* Returns "true" if there was an update to the context. */
>  bool
> -ct_zone_handle_port_update(struct ct_zone_ctx *ctx, const char *name,
> +ct_zone_handle_port_update(struct ct_zone_ctx *ctx,
> +                           const struct sbrec_port_binding *pb,
>                             bool updated, int *scan_start,
>                             int min_ct_zone, int max_ct_zone)
>  {
> -    struct shash_node *node = shash_find(&ctx->current, name);
> +    struct shash_node *node = shash_find(&ctx->current, pb->logical_port);
>
>      if (node) {
>          struct ct_zone *ct_zone = node->data;
> @@ -373,10 +416,14 @@ ct_zone_handle_port_update(struct ct_zone_ctx *ctx, 
> const char *name,
>          }
>      }
>
> -    if (updated && !node) {
> -        ct_zone_assign_unused(ctx, name, scan_start, max_ct_zone);
> +    if (updated) {
> +        if (!node) {
> +            ct_zone_assign_unused(ctx, pb->logical_port,
> +                                  scan_start, max_ct_zone);
> +        }
> +        ct_zone_limit_update(ctx, pb->logical_port, 
> ct_zone_get_pb_limit(pb));
>          return true;
> -    } else if (!updated && node && ct_zone_remove(ctx, node->name)) {
> +    } else if (node && ct_zone_remove(ctx, node->name)) {
>          return true;
>      }
>
> @@ -390,6 +437,25 @@ ct_zone_find_zone(const struct shash *ct_zones, const 
> char *name)
>      return ct_zone ? ct_zone->zone : 0;
>  }
>
> +void
> +ct_zones_limits_sync(struct ct_zone_ctx *ctx,
> +                     const struct hmap *local_datapaths,
> +                     const struct shash *local_lports)
> +{
> +    const struct local_datapath *ld;
> +    HMAP_FOR_EACH (ld, hmap_node, local_datapaths) {
> +        const char *name = smap_get(&ld->datapath->external_ids, "name");
> +        if (!name) {
> +            static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
> +            VLOG_ERR_RL(&rl, "Missing name for datapath '"UUID_FMT"' "
> +                        "skipping zone assignment.",
> +                        UUID_ARGS(&ld->datapath->header_.uuid));
> +            continue;
> +        }
> +
> +        ct_zone_limits_update_per_dp(ctx, ld, local_lports, name);
> +    }
> +}
>
>  static bool
>  ct_zone_assign_unused(struct ct_zone_ctx *ctx, const char *zone_name,
> @@ -442,7 +508,10 @@ ct_zone_add(struct ct_zone_ctx *ctx, const char *name, 
> uint16_t zone,
>          shash_add(&ctx->current, name, ct_zone);
>      }
>
> -    ct_zone->zone = zone;
> +    *ct_zone = (struct ct_zone) {
> +        .zone = zone,
> +        .limit = -1,
> +    };
>
>      if (set_pending) {
>          ct_zone_add_pending(&ctx->pending, CT_ZONE_OF_QUEUED,
> @@ -525,6 +594,7 @@ ct_zone_restore(const struct sbrec_datapath_binding_table 
> *dp_table,
>
>          struct ct_zone ct_zone = {
>              .zone = zone,
> +            .limit = -1,
>          };
>          /* Make sure we remove the uuid one in the next OvS DB commit without
>           * flush. */
> @@ -540,3 +610,76 @@ ct_zone_restore(const struct 
> sbrec_datapath_binding_table *dp_table,
>      ct_zone_add(ctx, current_name, zone, false);
>      free(new_name);
>  }
> +
> +static void
> +ct_zone_limits_update_per_dp(struct ct_zone_ctx *ctx,
> +                             const struct local_datapath *local_dp,
> +                             const struct shash *local_lports,
> +                             const char *name)
> +{
> +
> +    int64_t dp_limit = ct_zone_get_dp_limit(local_dp->datapath);
> +    char *dnat = alloc_nat_zone_key(name, "dnat");
> +    char *snat = alloc_nat_zone_key(name, "snat");
> +
> +    bool zone_updated = ct_zone_limit_update(ctx, dnat, dp_limit);
> +    zone_updated |= ct_zone_limit_update(ctx, snat, dp_limit);
> +
> +    if (local_dp->is_switch && zone_updated) {
> +        const struct shash_node *node;
> +        SHASH_FOR_EACH (node, local_lports) {
> +            const struct binding_lport *lport = node->data;
> +
> +            if (lport->pb->datapath != local_dp->datapath) {
> +                continue;
> +            }
> +
> +            ct_zone_limit_update(ctx, lport->name,
> +                                 ct_zone_get_pb_limit(lport->pb));
> +        }
> +    }
> +
> +    free(dnat);
> +    free(snat);
> +}
> +
> +static bool
> +ct_zone_limit_update(struct ct_zone_ctx *ctx, const char *name, int64_t 
> limit)
> +{
> +    struct ct_zone *ct_zone = shash_find_data(&ctx->current, name);
> +
> +    if (!ct_zone || ct_zone->limit == limit) {
> +        return false;
> +    }
> +
> +    ct_zone->limit = limit;
> +    /* Add pending entry only for DB store to avoid flushing the zone. */
> +    ct_zone_add_pending(&ctx->pending, CT_ZONE_DB_QUEUED, ct_zone, true, 
> name);
> +    VLOG_DBG("setting ct zone %"PRIu16" limit to %"PRId64,
> +             ct_zone->zone, ct_zone->limit);
> +
> +    return true;
> +}
> +
> +static int64_t
> +ct_zone_get_dp_limit(const struct sbrec_datapath_binding *dp)
> +{
> +    int64_t limit = ovn_smap_get_llong(&dp->external_ids, "ct-zone-limit", 
> -1);
> +    return ct_zone_limit_normalize(limit);
> +}
> +
> +static int64_t
> +ct_zone_get_pb_limit(const struct sbrec_port_binding *pb)
> +{
> +    int64_t dp_limit = ovn_smap_get_llong(&pb->datapath->external_ids,
> +                                          "ct-zone-limit", -1);
> +    int64_t limit = ovn_smap_get_llong(&pb->options,
> +                                       "ct-zone-limit", dp_limit);
> +    return ct_zone_limit_normalize(limit);
> +}
> +
> +static int64_t
> +ct_zone_limit_normalize(int64_t limit)
> +{
> +    return limit >= 0 && limit <= UINT32_MAX ? limit : -1;
> +}
> diff --git a/controller/ct-zone.h b/controller/ct-zone.h
> index 79e894de9..6df03975c 100644
> --- a/controller/ct-zone.h
> +++ b/controller/ct-zone.h
> @@ -22,6 +22,7 @@
>  #include "openvswitch/hmap.h"
>  #include "openvswitch/shash.h"
>  #include "openvswitch/types.h"
> +#include "local_data.h"
>  #include "ovn-sb-idl.h"
>  #include "simap.h"
>  #include "vswitch-idl.h"
> @@ -43,6 +44,7 @@ struct ct_zone_ctx {
>
>  struct ct_zone {
>      uint16_t zone;
> +    int64_t limit;
>  };
>
>  /* States to move through when a new conntrack zone has been allocated. */
> @@ -73,13 +75,20 @@ void ct_zones_update(const struct sset *local_lports,
>                       const struct hmap *local_datapaths,
>                       struct ct_zone_ctx *ctx);
>  void ct_zones_commit(const struct ovsrec_bridge *br_int,
> -                     struct shash *pending_ct_zones);
> +                     const struct ovsrec_datapath *ovs_dp,
> +                     struct ovsdb_idl_txn *ovs_idl_txn,
> +                     struct ct_zone_ctx *ctx);
>  void ct_zones_pending_clear_commited(struct shash *pending);
>  bool ct_zone_handle_dp_update(struct ct_zone_ctx *ctx,
> -                              const struct sbrec_datapath_binding *dp);
> -bool ct_zone_handle_port_update(struct ct_zone_ctx *ctx, const char *name,
> +                              const struct local_datapath *local_dp,
> +                              const struct shash *local_lports);
> +bool ct_zone_handle_port_update(struct ct_zone_ctx *ctx,
> +                                const struct sbrec_port_binding *pb,
>                                  bool updated, int *scan_start,
>                                  int min_ct_zone, int max_ct_zone);
>  uint16_t ct_zone_find_zone(const struct shash *ct_zones, const char *name);
> +void ct_zones_limits_sync(struct ct_zone_ctx *ctx,
> +                          const struct hmap *local_datapaths,
> +                          const struct shash *local_lports);
>
>  #endif /* controller/ct-zone.h */
> diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c
> index 4634fc6fe..f5674184a 100644
> --- a/controller/ovn-controller.c
> +++ b/controller/ovn-controller.c
> @@ -795,6 +795,7 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl)
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_ssl_col_private_key);
>      ovsdb_idl_add_table(ovs_idl, &ovsrec_table_datapath);
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_datapath_col_capabilities);
> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_datapath_col_ct_zones);
>      ovsdb_idl_add_table(ovs_idl, &ovsrec_table_flow_sample_collector_set);
>      ovsdb_idl_add_table(ovs_idl, &ovsrec_table_qos);
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_qos_col_other_config);
> @@ -804,6 +805,8 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl)
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_queue_col_other_config);
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_queue_col_external_ids);
>      ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_link_state);
> +    ovsdb_idl_add_table(ovs_idl, &ovsrec_table_ct_zone);
> +    ovsdb_idl_add_column(ovs_idl, &ovsrec_ct_zone_col_limit);
>
>      chassis_register_ovs_idl(ovs_idl);
>      encaps_register_ovs_idl(ovs_idl);
> @@ -2227,6 +2230,8 @@ en_ct_zones_run(struct engine_node *node, void *data)
>      ct_zones_restore(&ct_zones_data->ctx, ovs_table, dp_table, br_int);
>      ct_zones_update(&rt_data->local_lports, ovs_table,
>                      &rt_data->local_datapaths, &ct_zones_data->ctx);
> +    ct_zones_limits_sync(&ct_zones_data->ctx, &rt_data->local_datapaths,
> +                         &rt_data->lbinding_data.lports);
>
>      ct_zones_data->recomputed = true;
>      engine_set_node_state(node, EN_UPDATED);
> @@ -2246,8 +2251,9 @@ ct_zones_datapath_binding_handler(struct engine_node 
> *node, void *data)
>          EN_OVSDB_GET(engine_get_input("SB_datapath_binding", node));
>
>      SBREC_DATAPATH_BINDING_TABLE_FOR_EACH_TRACKED (dp, dp_table) {
> -        if (!get_local_datapath(&rt_data->local_datapaths,
> -                                dp->tunnel_key)) {
> +        const struct local_datapath *local_dp=
> +                get_local_datapath(&rt_data->local_datapaths, 
> dp->tunnel_key);
> +        if (!local_dp) {
>              continue;
>          }
>
> @@ -2257,7 +2263,8 @@ ct_zones_datapath_binding_handler(struct engine_node 
> *node, void *data)
>              return false;
>          }
>
> -        if (!ct_zone_handle_dp_update(&ct_zones_data->ctx, dp)) {
> +        if (!ct_zone_handle_dp_update(&ct_zones_data->ctx, local_dp,
> +                                      &rt_data->lbinding_data.lports)) {
>              return false;
>          }
>      }
> @@ -2311,7 +2318,7 @@ ct_zones_runtime_data_handler(struct engine_node *node, 
> void *data)
>                      t_lport->tracked_type == TRACKED_RESOURCE_NEW ||
>                      t_lport->tracked_type == TRACKED_RESOURCE_UPDATED;
>              updated |= ct_zone_handle_port_update(&ct_zones_data->ctx,
> -                                                  t_lport->pb->logical_port,
> +                                                  t_lport->pb,
>                                                    port_updated, &scan_start,
>                                                    min_ct_zone, max_ct_zone);
>          }
> @@ -5566,8 +5573,8 @@ main(int argc, char *argv[])
>                          if (ct_zones_data) {
>                              stopwatch_start(CT_ZONE_COMMIT_STOPWATCH_NAME,
>                                              time_msec());
> -                            ct_zones_commit(br_int,
> -                                            &ct_zones_data->ctx.pending);
> +                            ct_zones_commit(br_int, br_int_dp, ovs_idl_txn,
> +                                            &ct_zones_data->ctx);
>                              stopwatch_stop(CT_ZONE_COMMIT_STOPWATCH_NAME,
>                                             time_msec());
>                          }
> diff --git a/lib/ovn-util.c b/lib/ovn-util.c
> index 58e941193..1ad347419 100644
> --- a/lib/ovn-util.c
> +++ b/lib/ovn-util.c
> @@ -816,6 +816,23 @@ str_tolower(const char *orig)
>      return copy;
>  }
>
> +/* This is a wrapper function which get the value associated with 'key' in
> + * 'smap' and converts it to a long long. If 'key' is not in 'smap' or a
> + * valid unsigned integer can't be parsed from its value, returns 'def'.
> + */
> +long long
> +ovn_smap_get_llong(const struct smap *smap, const char *key, long long def)
> +{
> +    const char *value = smap_get(smap, key);
> +    long long ll_value;
> +
> +    if (!value || !str_to_llong(value, 10, &ll_value)) {
> +        return def;
> +    }
> +
> +    return ll_value;
> +}
> +
>  /* For a 'key' of the form "IP:port" or just "IP", sets 'port',
>   * 'ip_address' and 'ip' ('struct in6_addr' IPv6 or IPv4 mapped address).
>   * The caller must free() the memory allocated for 'ip_address'.
> diff --git a/lib/ovn-util.h b/lib/ovn-util.h
> index f75b821b6..ae971ce5a 100644
> --- a/lib/ovn-util.h
> +++ b/lib/ovn-util.h
> @@ -211,6 +211,9 @@ char *normalize_v46_prefix(const struct in6_addr *prefix, 
> unsigned int plen);
>   */
>  char *str_tolower(const char *orig);
>
> +long long ovn_smap_get_llong(const struct smap *smap, const char *key,
> +                             long long def);
> +
>  /* OVN daemon options. Taken from ovs/lib/daemon.h. */
>  #define OVN_DAEMON_OPTION_ENUMS                     \
>      OVN_OPT_DETACH,                                 \
> diff --git a/northd/northd.c b/northd/northd.c
> index 5b50ea191..325b412db 100644
> --- a/northd/northd.c
> +++ b/northd/northd.c
> @@ -741,6 +741,14 @@ ovn_datapath_update_external_ids(struct ovn_datapath *od)
>          smap_add(&ids, "name2", name2);
>      }
>
> +    int64_t ct_zone_limit = ovn_smap_get_llong(od->nbs ?
> +                                               &od->nbs->other_config :
> +                                               &od->nbr->options,
> +                                               "ct-zone-limit", -1);
> +    if (ct_zone_limit > 0) {
> +        smap_add_format(&ids, "ct-zone-limit", "%"PRId64, ct_zone_limit);
> +    }
> +
>      /* Set interconn-ts. */
>      if (od->nbs) {
>          const char *ts = smap_get(&od->nbs->other_config, "interconn-ts");
> diff --git a/ovn-nb.xml b/ovn-nb.xml
> index 0f9a1005a..7087c0cf2 100644
> --- a/ovn-nb.xml
> +++ b/ovn-nb.xml
> @@ -747,6 +747,17 @@
>          this timeout will be automatically removed. The value defaults
>          to 0, which means disabled.
>        </column>
> +
> +      <column name="other_config" key="ct-zone-limit"
> +              type='{"type": "integer", "minInteger": 0, "maxInteger": 
> 4294967295}'>
> +        CT zone <code>limit</code> value for given
> +        <ref table="Logical_Switch"/>. This value will be propagated to all
> +        <ref table="Logical_Switch_Port"/> when configured, but can be
> +        overwritten individually per <ref table="Logical_Switch_Port"/>. The
> +        value 0 means unlimited. When the option is not present the limit
> +        is not set and the zone limit is derived from OvS default datapath
> +        limit.
> +      </column>
>      </group>
>
>      <group title="IP Multicast Snooping Options">
> @@ -1148,6 +1159,16 @@
>            <code>false</code>.
>          </column>
>
> +        <column name="options" key="ct-zone-limit"
> +                type='{"type": "integer", "minInteger": 0, "maxInteger": 
> 4294967295}'>
> +          CT zone <code>limit</code> value for given
> +          <ref table="Logical_Switch_Port"/>. This value has priority over
> +          limit specified on <ref table="Logical_Switch"/> when configured.
> +          The value 0 means unlimited. When the option is not present the 
> limit
> +          is not set and the zone limit is derived from OvS default datapath
> +          limit.
> +        </column>
> +
>        </group>
>
>        <group title="Options for localnet ports">
> @@ -2811,6 +2832,14 @@ or
>          </p>
>
>        </column>
> +
> +      <column name="options" key="ct-zone-limit"
> +              type='{"type": "integer", "minInteger": 0, "maxInteger": 
> 4294967295}'>
> +        CT zone <code>limit</code> value for given
> +        <ref table="Logical_Router"/>. The value 0 means unlimited, when the
> +        option is not present the limit is not set and the zone limit is
> +        derived from OvS default datapath limit.
> +      </column>
>      </group>
>
>      <group title="Common Columns">
> diff --git a/tests/ovn-controller.at b/tests/ovn-controller.at
> index 41a929ffd..bbf9b3c43 100644
> --- a/tests/ovn-controller.at
> +++ b/tests/ovn-controller.at
> @@ -3194,3 +3194,102 @@ check_ct_zone_max 20
>  OVN_CLEANUP([hv1])
>  AT_CLEANUP
>  ])
> +
> +OVN_FOR_EACH_NORTHD([
> +AT_SETUP([ovn-controller - CT zone limit])
> +ovn_start
> +
> +net_add n1
> +sim_add hv1
> +as hv1
> +check ovs-vsctl add-br br-phys
> +ovn_attach n1 br-phys 192.168.0.1
> +
> +check ovn-appctl -t ovn-controller vlog/set dbg:ct_zone
> +
> +check ovs-vsctl add-port br-int lsp \
> +    -- set Interface lsp external-ids:iface-id=lsp
> +
> +check ovn-nbctl lr-add lr
> +
> +check ovn-nbctl ls-add ls
> +check ovn-nbctl lsp-add ls ls-lr
> +check ovn-nbctl lsp-set-type ls-lr router
> +check ovn-nbctl lsp-set-addresses ls-lr router
> +check ovn-nbctl lrp-add lr lr-ls 00:00:00:00:00:01 10.0.0.1
> +
> +check ovn-nbctl lsp-add ls lsp
> +check ovn-nbctl lsp-set-addresses lsp "00:00:00:00:00:02 10.0.0.2"
> +
> +check ovn-nbctl lrp-add lr lrp-gw 01:00:00:00:00:01 172.16.0.1
> +check ovn-nbctl lrp-set-gateway-chassis lrp-gw hv1
> +
> +wait_for_ports_up
> +check ovn-nbctl --wait=hv sync
> +
> +get_zone_num() {
> +    output=$1
> +    name=$2
> +
> +    printf "$output" | grep $name | cut -d ' ' -f 2
> +}
> +
> +check_ovs_ct_limit() {
> +    zone=$1
> +    limit=$2
> +
> +    AT_CHECK_UNQUOTED([ovs-appctl dpctl/ct-get-limits zone=$zone | sed 
> "s/count=.*/count=?/;s/default limit=.*/default limit=?/" | sort], [0], [dnl
> +default limit=?
> +zone=$zone,limit=$limit,count=?
> +])
> +}
> +
> +wait_ovs_ct_limit_count() {
> +    count=$1
> +
> +    OVS_WAIT_UNTIL([test $count -eq $(ovs-vsctl --no-headings --format=table 
> list CT_Zone | wc -l)])
> +}
> +
> +ct_zones=$(ovn-appctl -t ovn-controller ct-zone-list)
> +lr_dnat=$(get_zone_num "$ct_zones" lr_dnat)
> +lr_snat=$(get_zone_num "$ct_zones" lr_snat)
> +
> +ls_dnat=$(get_zone_num "$ct_zones" ls_dnat)
> +ls_snat=$(get_zone_num "$ct_zones" ls_snat)
> +
> +lsp=$(get_zone_num "$ct_zones" lsp)
> +
> +wait_ovs_ct_limit_count 0
> +
> +check ovn-nbctl --wait=hv set Logical_Router lr options:ct-zone-limit=5
> +wait_ovs_ct_limit_count 2
> +check_ovs_ct_limit $lr_dnat 5
> +check_ovs_ct_limit $lr_snat 5
> +
> +check ovn-nbctl --wait=hv remove Logical_Router lr options ct-zone-limit
> +wait_ovs_ct_limit_count 0
> +
> +check ovn-nbctl --wait=hv set Logical_Switch ls other_config:ct-zone-limit=10
> +wait_ovs_ct_limit_count 3
> +check_ovs_ct_limit $ls_dnat 10
> +check_ovs_ct_limit $ls_snat 10
> +check_ovs_ct_limit $lsp 10
> +
> +check ovn-nbctl --wait=hv set Logical_Switch_Port lsp options:ct-zone-limit=5
> +wait_ovs_ct_limit_count 3
> +check_ovs_ct_limit $ls_dnat 10
> +check_ovs_ct_limit $ls_snat 10
> +check_ovs_ct_limit $lsp 5
> +
> +check ovn-nbctl --wait=hv remove Logical_Switch_Port lsp options 
> ct-zone-limit
> +wait_ovs_ct_limit_count 3
> +check_ovs_ct_limit $ls_dnat 10
> +check_ovs_ct_limit $ls_snat 10
> +check_ovs_ct_limit $lsp 10
> +
> +check ovn-nbctl --wait=hv remove Logical_Switch ls other_config ct-zone-limit
> +wait_ovs_ct_limit_count 0
> +
> +OVN_CLEANUP([hv1])
> +AT_CLEANUP
> +])
> --
> 2.45.2
>
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> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>
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