On Thu, Aug 3, 2023 at 3:15 PM <lmart...@redhat.com> wrote:

> From: Lucas Alvares Gomes <lucasago...@gmail.com>
>
> In order for the CMS to know which Chassis a distributed gateway port
> is bond to, this patch updates the ovn-northd daemon to populate the
> Logical_Router_Port table with that information.
>
> To avoid changing the database schema, ovn-northd is setting a new key
> called "hosting-chassis" in the options column from the LRP table. This
> key value points to the name of the Chassis that is currently hosting
> the distributed port.
>
> Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=2107515
> Signed-off-by: Lucas Alvares Gomes <lucasago...@gmail.com>
> ---
> v4 -> v5
> * Fix test to remove sleep and assert on the right table
>
> v3 -> v4
> * Removed smap_clone for updating the options and replaced it with
>   smap_replace/smap_remove
> * Updated the test to also assert the removal of the hosting-chassis
>   key by northd
>
> v2 -> v3
> * Fixed memory leak
> * Separate the logic to update the router port into their own function
> * Use attribute l3dgw_port to find the GW port
>
> v1 -> v2
> * Rebased on the main branch
> * Updated the ovnsb_db_run() and handle_port_binding_changes() functions
>   to include the LR ports as a parameter
>
>  northd/en-sync-from-sb.c |  2 +-
>  northd/northd.c          | 30 +++++++++++++++++++++++++++--
>  northd/northd.h          |  3 ++-
>  ovn-nb.xml               | 15 +++++++++++++++
>  tests/ovn-northd.at      | 41 ++++++++++++++++++++++++++++++++++++++++
>  5 files changed, 87 insertions(+), 4 deletions(-)
>
> diff --git a/northd/en-sync-from-sb.c b/northd/en-sync-from-sb.c
> index 55ece2d16..4109aebe4 100644
> --- a/northd/en-sync-from-sb.c
> +++ b/northd/en-sync-from-sb.c
> @@ -60,7 +60,7 @@ en_sync_from_sb_run(struct engine_node *node, void *data
> OVS_UNUSED)
>      stopwatch_start(OVNSB_DB_RUN_STOPWATCH_NAME, time_msec());
>      ovnsb_db_run(eng_ctx->ovnnb_idl_txn, eng_ctx->ovnsb_idl_txn,
>                   sb_pb_table, sb_ha_ch_grp_table, sb_ha_ch_grp_by_name,
> -                 &nd->ls_ports);
> +                 &nd->ls_ports, &nd->lr_ports);
>      stopwatch_stop(OVNSB_DB_RUN_STOPWATCH_NAME, time_msec());
>  }
>
> diff --git a/northd/northd.c b/northd/northd.c
> index b9605862e..c6752884c 100644
> --- a/northd/northd.c
> +++ b/northd/northd.c
> @@ -17780,6 +17780,22 @@ build_ha_chassis_group_ref_chassis(struct
> ovsdb_idl_index *ha_ch_grp_by_name,
>      }
>  }
>
> +/* Set the "hosting-chassis" option in the NBDB logical_router_port
> + * table indicating which chassis the distributed port is bond to. */
> +static void
> +handle_cr_port_binding_changes(const struct sbrec_port_binding *sb,
> +                struct ovn_port *orp)
> +{
> +    if (sb->chassis) {
> +        nbrec_logical_router_port_update_options_setkey(
> +            orp->l3dgw_port->nbrp, "hosting-chassis",
> +            sb->chassis->name);
> +    } else {
> +        nbrec_logical_router_port_update_options_delkey(
> +            orp->l3dgw_port->nbrp, "hosting-chassis");
> +    }
> +}
> +
>  /* Handle changes to the 'chassis' column of the 'Port_Binding' table.
> When
>   * this column is not empty, it means we need to set the corresponding
> logical
>   * port as 'up' in the northbound DB. */
> @@ -17789,6 +17805,7 @@ handle_port_binding_changes(struct ovsdb_idl_txn
> *ovnsb_txn,
>                  const struct sbrec_ha_chassis_group_table
> *sb_ha_ch_grp_table,
>                  struct ovsdb_idl_index *sb_ha_ch_grp_by_name,
>                  struct hmap *ls_ports,
> +                struct hmap *lr_ports,
>                  struct shash *ha_ref_chassis_map)
>  {
>      const struct sbrec_port_binding *sb;
> @@ -17807,6 +17824,14 @@ handle_port_binding_changes(struct ovsdb_idl_txn
> *ovnsb_txn,
>      }
>
>      SBREC_PORT_BINDING_TABLE_FOR_EACH (sb, sb_pb_table) {
> +
> +        struct ovn_port *orp = ovn_port_find(lr_ports, sb->logical_port);
> +
> +        if (orp && is_cr_port(orp)) {
> +            handle_cr_port_binding_changes(sb, orp);
> +            continue;
> +        }
> +
>          struct ovn_port *op = ovn_port_find(ls_ports, sb->logical_port);
>
>          if (!op || !op->nbsp) {
> @@ -17855,7 +17880,8 @@ ovnsb_db_run(struct ovsdb_idl_txn *ovnnb_txn,
>               const struct sbrec_port_binding_table *sb_pb_table,
>               const struct sbrec_ha_chassis_group_table
> *sb_ha_ch_grp_table,
>               struct ovsdb_idl_index *sb_ha_ch_grp_by_name,
> -             struct hmap *ls_ports)
> +             struct hmap *ls_ports,
> +             struct hmap *lr_ports)
>  {
>      if (!ovnnb_txn ||
>          !ovsdb_idl_has_ever_connected(ovsdb_idl_txn_get_idl(ovnsb_txn))) {
> @@ -17864,7 +17890,7 @@ ovnsb_db_run(struct ovsdb_idl_txn *ovnnb_txn,
>
>      struct shash ha_ref_chassis_map =
> SHASH_INITIALIZER(&ha_ref_chassis_map);
>      handle_port_binding_changes(ovnsb_txn, sb_pb_table,
> sb_ha_ch_grp_table,
> -                                sb_ha_ch_grp_by_name, ls_ports,
> +                                sb_ha_ch_grp_by_name, ls_ports, lr_ports,
>                                  &ha_ref_chassis_map);
>      if (ovnsb_txn) {
>          update_sb_ha_group_ref_chassis(sb_ha_ch_grp_table,
> diff --git a/northd/northd.h b/northd/northd.h
> index f3e63b1e1..44dc11009 100644
> --- a/northd/northd.h
> +++ b/northd/northd.h
> @@ -326,7 +326,8 @@ void ovnsb_db_run(struct ovsdb_idl_txn *ovnnb_txn,
>                    const struct sbrec_port_binding_table *,
>                    const struct sbrec_ha_chassis_group_table *,
>                    struct ovsdb_idl_index *sb_ha_ch_grp_by_name,
> -                  struct hmap *ls_ports);
> +                  struct hmap *ls_ports,
> +                  struct hmap *lr_ports);
>  bool northd_handle_ls_changes(struct ovsdb_idl_txn *,
>                                const struct northd_input *,
>                                struct northd_data *);
> diff --git a/ovn-nb.xml b/ovn-nb.xml
> index 4fbf4f7e5..b1e9ba724 100644
> --- a/ovn-nb.xml
> +++ b/ovn-nb.xml
> @@ -3113,6 +3113,21 @@ or
>              port on the logical router.  It is otherwise ignored.
>            </p>
>          </column>
> +
> +        <column name="options" key="hosting-chassis">
> +          <p>
> +            This option is populated by <code>ovn-northd</code>, rather
> +            than by the CMS plugin.
> +          </p>
> +
> +          <p>
> +            When a distributed gateway port is bound to a location in
> +            the OVN Southbound database
> +            <ref db="OVN_Southbound" table="Port_Binding"/>
> +            <code>ovn-northd</code> will populate this option with the
> +            name of the Chassis that is currently hosting this port.
> +          </p>
> +        </column>
>        </group>
>      </group>
>
> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> index 3e06f14c9..99634d51f 100644
> --- a/tests/ovn-northd.at
> +++ b/tests/ovn-northd.at
> @@ -169,6 +169,47 @@ AT_CHECK([test x`ovn-nbctl lsp-get-up S1-R1` = xup])
>  AT_CLEANUP
>  ])
>
> +OVN_FOR_EACH_NORTHD_NO_HV([
> +AT_SETUP([check Logical Router Port hosting-chassis option])
> +ovn_start
> +
> +check ovn-sbctl chassis-add ch1 geneve 127.0.0.2
> +
> +check ovn-nbctl lr-add lr1
> +check ovn-nbctl lrp-add lr1 lrp1 00:00:00:00:00:01 10.0.0.1/24
> +check ovn-nbctl ls-add ls1
> +check ovn-nbctl lsp-add ls1 lsp1 -- \
> +    lsp-set-addresses lsp1 router -- \
> +    lsp-set-type lsp1 router -- \
> +    lsp-set-options lsp1 router-port=lrp1
> +
> +# Make lrp a cr-port
> +check ovn-nbctl lrp-set-gateway-chassis lrp1 ch1
> +
> +check ovn-nbctl --wait=sb sync
> +
> +wait_row_count Port_Binding 1 logical_port=cr-lrp1 \
> +    options:always-redirect="true" options:distributed-port="lrp1"
> +
> +# Simulate cr-port being bound to ch1
> +ch1_uuid=`ovn-sbctl --bare --columns _uuid find Chassis name="ch1"`
> +check ovn-sbctl set Port_Binding cr-lrp1 chassis=${ch1_uuid}
> +
> +check ovn-nbctl --wait=sb sync
> +
> +# Check for the hosting-chassis option being set by northd
> +wait_row_count nb:Logical_Router_Port 1 name=lrp1
> options:hosting-chassis=ch1
> +
> +# Now remove the chassis from the port binding record and assert that the
> +# hosting-chassis option was removed by northd
> +check ovn-sbctl clear Port_Binding cr-lrp1 chassis
> +check ovn-nbctl --wait=sb sync
> +
> +wait_row_count nb:Logical_Router_Port 0 name=lrp1
> options:hosting-chassis=ch1
> +
> +AT_CLEANUP
> +])
> +
>  OVN_FOR_EACH_NORTHD_NO_HV([
>  AT_SETUP([check LRP external id propagation to SBDB])
>  ovn_start
> --
> 2.41.0
>
> _______________________________________________
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> d...@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>
>
Looks good to me, thanks!

Acked-by: Ales Musil <amu...@redhat.com>

-- 

Ales Musil

Senior Software Engineer - OVN Core

Red Hat EMEA <https://www.redhat.com>

amu...@redhat.com    IM: amusil
<https://red.ht/sig>
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