[ovs-dev,v6,2/2] Controller, northd: Add support for CT zone limits.

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 <amusil@redhat.com>
---
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.
---
 NEWS                        |   3 +
 controller/ct-zone.c        | 180 ++++++++++++++++++++++++++++++++----
 controller/ct-zone.h        |  15 ++-
 controller/ovn-controller.c |  21 +++--
 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(+), 29 deletions(-)

On Thu, Jul 25, 2024 at 6:22 AM Ales Musil <amusil@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 <amusil@redhat.com>

Thanks for addressing the comments in v6.  The patch LGTM.

Before applying/giving the Ack, I want to make sure that the system
test failure for this patch in the CI is a flake.
Can you please take a look ?
https://github.com/ovsrobot/ovn/actions/runs/10092667039/job/27906915451#step:10:9299

Thanks
Numan

> ---
> 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.
> ---
>  NEWS                        |   3 +
>  controller/ct-zone.c        | 180 ++++++++++++++++++++++++++++++++----
>  controller/ct-zone.h        |  15 ++-
>  controller/ovn-controller.c |  21 +++--
>  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(+), 29 deletions(-)
>
> diff --git a/NEWS b/NEWS
> index 72933b5b9..4c711d1ef 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -42,6 +42,9 @@ Post v24.03.0
>      true, the traffic destined to a logical port of a provider logical switch
>      (having a localnet port) will be tunnelled instead of sending it via the
>      localnet port.
> +  - 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 ab0eec9d0..1aab7ccef 100644
> --- a/controller/ct-zone.c
> +++ b/controller/ct-zone.c
> @@ -15,6 +15,7 @@
>
>  #include <config.h>
>
> +#include "binding.h"
>  #include "ct-zone.h"
>  #include "local_data.h"
>  #include "openvswitch/vlog.h"
> @@ -34,6 +35,16 @@ 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)
> @@ -210,11 +221,24 @@ 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
> @@ -226,7 +250,7 @@ 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)) {
> @@ -241,8 +265,22 @@ 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
> @@ -261,9 +299,21 @@ 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.
> @@ -273,14 +323,6 @@ 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. */
> @@ -304,14 +346,18 @@ 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)
>  {
> -    struct shash_node *node = shash_find(&ctx->current, name);
> -    if (updated && !node) {
> -        ct_zone_assign_unused(ctx, name, scan_start);
> +    struct shash_node *node = shash_find(&ctx->current, pb->logical_port);
> +    if (updated) {
> +        if (!node) {
> +            ct_zone_assign_unused(ctx, pb->logical_port, scan_start);
> +        }
> +        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;
>      }
>
> @@ -325,6 +371,25 @@ 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,
> @@ -377,7 +442,10 @@ 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,
> @@ -460,6 +528,7 @@ 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. */
> @@ -475,3 +544,76 @@ 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 a7c2011a1..e74af1d66 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. */
> @@ -70,12 +72,19 @@ 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);
>  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 aee558f9a..28f4fe407 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, &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;
>          }
>      }
> @@ -2306,8 +2313,8 @@ 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,
> -                                                  port_updated, &scan_start);
> +                                                  t_lport->pb, port_updated,
> +                                                  &scan_start);
>          }
>      }
>
> @@ -5560,8 +5567,8 @@ 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 9cb099e68..cc308468b 100644
> --- a/tests/ovn-controller.at
> +++ b/tests/ovn-controller.at
> @@ -3127,3 +3127,102 @@ OVS_WAIT_UNTIL([grep -q 'tcp:127.0.0.1:1235: connected' hv1/ovn-controller.log])
>
>  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
>
> _______________________________________________
> dev mailing list
> dev@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>

On Fri, Jul 26, 2024 at 5:51 PM Numan Siddique <numans@ovn.org> wrote:

> On Thu, Jul 25, 2024 at 6:22 AM Ales Musil <amusil@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 <amusil@redhat.com>
>
> Thanks for addressing the comments in v6.  The patch LGTM.
>
> Before applying/giving the Ack, I want to make sure that the system
> test failure for this patch in the CI is a flake.
> Can you please take a look ?
>
> https://github.com/ovsrobot/ovn/actions/runs/10092667039/job/27906915451#step:10:9299
>
> Thanks
> Numan
>


It is a flake, for some reason the openbfdd fails to start from time to
time.


> > ---
> > 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.
> > ---
> >  NEWS                        |   3 +
> >  controller/ct-zone.c        | 180 ++++++++++++++++++++++++++++++++----
> >  controller/ct-zone.h        |  15 ++-
> >  controller/ovn-controller.c |  21 +++--
> >  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(+), 29 deletions(-)
> >
> > diff --git a/NEWS b/NEWS
> > index 72933b5b9..4c711d1ef 100644
> > --- a/NEWS
> > +++ b/NEWS
> > @@ -42,6 +42,9 @@ Post v24.03.0
> >      true, the traffic destined to a logical port of a provider logical
> switch
> >      (having a localnet port) will be tunnelled instead of sending it
> via the
> >      localnet port.
> > +  - 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 ab0eec9d0..1aab7ccef 100644
> > --- a/controller/ct-zone.c
> > +++ b/controller/ct-zone.c
> > @@ -15,6 +15,7 @@
> >
> >  #include <config.h>
> >
> > +#include "binding.h"
> >  #include "ct-zone.h"
> >  #include "local_data.h"
> >  #include "openvswitch/vlog.h"
> > @@ -34,6 +35,16 @@ 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)
> > @@ -210,11 +221,24 @@ 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
> > @@ -226,7 +250,7 @@ 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)) {
> > @@ -241,8 +265,22 @@ 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
> > @@ -261,9 +299,21 @@ 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.
> > @@ -273,14 +323,6 @@ 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. */
> > @@ -304,14 +346,18 @@ 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)
> >  {
> > -    struct shash_node *node = shash_find(&ctx->current, name);
> > -    if (updated && !node) {
> > -        ct_zone_assign_unused(ctx, name, scan_start);
> > +    struct shash_node *node = shash_find(&ctx->current,
> pb->logical_port);
> > +    if (updated) {
> > +        if (!node) {
> > +            ct_zone_assign_unused(ctx, pb->logical_port, scan_start);
> > +        }
> > +        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;
> >      }
> >
> > @@ -325,6 +371,25 @@ 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,
> > @@ -377,7 +442,10 @@ 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,
> > @@ -460,6 +528,7 @@ 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. */
> > @@ -475,3 +544,76 @@ 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 a7c2011a1..e74af1d66 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.
> */
> > @@ -70,12 +72,19 @@ 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);
> >  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 aee558f9a..28f4fe407 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, &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;
> >          }
> >      }
> > @@ -2306,8 +2313,8 @@ 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,
> > -                                                  port_updated,
> &scan_start);
> > +                                                  t_lport->pb,
> port_updated,
> > +                                                  &scan_start);
> >          }
> >      }
> >
> > @@ -5560,8 +5567,8 @@ 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 9cb099e68..cc308468b 100644
> > --- a/tests/ovn-controller.at
> > +++ b/tests/ovn-controller.at
> > @@ -3127,3 +3127,102 @@ OVS_WAIT_UNTIL([grep -q 'tcp:127.0.0.1:1235:
> connected' hv1/ovn-controller.log])
> >
> >  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
> >
> > _______________________________________________
> > dev mailing list
> > dev@openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> >
>
>
Thanks,
Ales

On Fri, Jul 26, 2024 at 1:20 PM Ales Musil <amusil@redhat.com> wrote:
>
> On Fri, Jul 26, 2024 at 5:51 PM Numan Siddique <numans@ovn.org> wrote:
>
> > On Thu, Jul 25, 2024 at 6:22 AM Ales Musil <amusil@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 <amusil@redhat.com>
> >
> > Thanks for addressing the comments in v6.  The patch LGTM.
> >
> > Before applying/giving the Ack, I want to make sure that the system
> > test failure for this patch in the CI is a flake.
> > Can you please take a look ?
> >
> > https://github.com/ovsrobot/ovn/actions/runs/10092667039/job/27906915451#step:10:9299
> >
> > Thanks
> > Numan
> >
>
>
> It is a flake, for some reason the openbfdd fails to start from time to
> time.
>

Thanks for confirming.  I was a bit late in applying this patch series and
now it needs rebasing due to this commit -
https://github.com/ovn-org/ovn/commit/f2363f49f6a46e784b1d8dad33eee733aa09380c

I tried resolving the conflicts, but it was non trivial.  Can you
please rebase and submit ?

Numan

>
> > > ---
> > > 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.
> > > ---
> > >  NEWS                        |   3 +
> > >  controller/ct-zone.c        | 180 ++++++++++++++++++++++++++++++++----
> > >  controller/ct-zone.h        |  15 ++-
> > >  controller/ovn-controller.c |  21 +++--
> > >  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(+), 29 deletions(-)
> > >
> > > diff --git a/NEWS b/NEWS
> > > index 72933b5b9..4c711d1ef 100644
> > > --- a/NEWS
> > > +++ b/NEWS
> > > @@ -42,6 +42,9 @@ Post v24.03.0
> > >      true, the traffic destined to a logical port of a provider logical
> > switch
> > >      (having a localnet port) will be tunnelled instead of sending it
> > via the
> > >      localnet port.
> > > +  - 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 ab0eec9d0..1aab7ccef 100644
> > > --- a/controller/ct-zone.c
> > > +++ b/controller/ct-zone.c
> > > @@ -15,6 +15,7 @@
> > >
> > >  #include <config.h>
> > >
> > > +#include "binding.h"
> > >  #include "ct-zone.h"
> > >  #include "local_data.h"
> > >  #include "openvswitch/vlog.h"
> > > @@ -34,6 +35,16 @@ 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)
> > > @@ -210,11 +221,24 @@ 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
> > > @@ -226,7 +250,7 @@ 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)) {
> > > @@ -241,8 +265,22 @@ 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
> > > @@ -261,9 +299,21 @@ 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.
> > > @@ -273,14 +323,6 @@ 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. */
> > > @@ -304,14 +346,18 @@ 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)
> > >  {
> > > -    struct shash_node *node = shash_find(&ctx->current, name);
> > > -    if (updated && !node) {
> > > -        ct_zone_assign_unused(ctx, name, scan_start);
> > > +    struct shash_node *node = shash_find(&ctx->current,
> > pb->logical_port);
> > > +    if (updated) {
> > > +        if (!node) {
> > > +            ct_zone_assign_unused(ctx, pb->logical_port, scan_start);
> > > +        }
> > > +        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;
> > >      }
> > >
> > > @@ -325,6 +371,25 @@ 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,
> > > @@ -377,7 +442,10 @@ 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,
> > > @@ -460,6 +528,7 @@ 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. */
> > > @@ -475,3 +544,76 @@ 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 a7c2011a1..e74af1d66 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.
> > */
> > > @@ -70,12 +72,19 @@ 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);
> > >  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 aee558f9a..28f4fe407 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, &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;
> > >          }
> > >      }
> > > @@ -2306,8 +2313,8 @@ 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,
> > > -                                                  port_updated,
> > &scan_start);
> > > +                                                  t_lport->pb,
> > port_updated,
> > > +                                                  &scan_start);
> > >          }
> > >      }
> > >
> > > @@ -5560,8 +5567,8 @@ 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 9cb099e68..cc308468b 100644
> > > --- a/tests/ovn-controller.at
> > > +++ b/tests/ovn-controller.at
> > > @@ -3127,3 +3127,102 @@ OVS_WAIT_UNTIL([grep -q 'tcp:127.0.0.1:1235:
> > connected' hv1/ovn-controller.log])
> > >
> > >  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
> > >
> > > _______________________________________________
> > > dev mailing list
> > > dev@openvswitch.org
> > > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> > >
> >
> >
> Thanks,
> Ales
>
> --
>
> Ales Musil
>
> Senior Software Engineer - OVN Core
>
> Red Hat EMEA <https://www.redhat.com>
>
> amusil@redhat.com
> <https://red.ht/sig>
> _______________________________________________
> dev mailing list
> dev@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev