On 5/5/23 11:21, Ales Musil wrote:
> On Fri, Apr 28, 2023 at 1:59 PM Xavier Simonart <[email protected]> wrote:
> 
>> When interface was unbound, the port was not always set down and the
>> port_binding->chassis not always removed.
>>
>> Fixes: a7c7d4519e50 ("controller: avoid recomputes triggered by SBDB
>> Port_Binding updates.")
>> Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=2150905
>>
>> Signed-off-by: Xavier Simonart <[email protected]>
>>
>> ---
>> v3: - fixed another pb->chassis not being cleared
>>     - avoid setting port down (and logging) if already in idl
>> v4: - handled Ales' comments: avoid using is_deleted outside of tracked
>> loops
>> ---
>>  controller/binding.c        |  20 ++++++-
>>  controller/binding.h        |   5 ++
>>  controller/if-status.c      | 103 +++++++++++++++++++++++++-----------
>>  controller/if-status.h      |   1 +
>>  controller/ovn-controller.c |   2 +
>>  tests/system-ovn.at         |  12 ++---
>>  6 files changed, 102 insertions(+), 41 deletions(-)
>>
>> diff --git a/controller/binding.c b/controller/binding.c
>> index 357e77609..bd810f669 100644
>> --- a/controller/binding.c
>> +++ b/controller/binding.c
>> @@ -899,7 +899,6 @@ local_binding_set_down(struct shash *local_bindings,
>> const char *pb_name,
>>
>>      if (!sb_readonly && b_lport && b_lport->pb->n_up &&
>> b_lport->pb->up[0] &&
>>              (!b_lport->pb->chassis || b_lport->pb->chassis ==
>> chassis_rec)) {
>> -        VLOG_INFO("Setting lport %s down in Southbound", pb_name);
>>          binding_lport_set_down(b_lport, sb_readonly);
>>          LIST_FOR_EACH (b_lport, list_node, &lbinding->binding_lports) {
>>              binding_lport_set_down(b_lport, sb_readonly);
>> @@ -3376,6 +3375,24 @@ binding_lport_delete(struct shash *binding_lports,
>>      binding_lport_destroy(b_lport);
>>  }
>>
>> +void
>> +port_binding_set_down(const struct sbrec_chassis *chassis_rec,
>> +                      const struct sbrec_port_binding_table *pb_table,
>> +                      const char *iface_id,
>> +                      const struct uuid *pb_uuid)
>> +{
>> +        const struct sbrec_port_binding *pb =
>> +            sbrec_port_binding_table_get_for_uuid(pb_table, pb_uuid);
>> +        if (!pb) {
>> +            VLOG_DBG("port_binding already deleted for %s", iface_id);
>> +        } else if (pb->n_up && pb->up[0]) {
>> +            bool up = false;
>> +            sbrec_port_binding_set_up(pb, &up, 1);
>> +            VLOG_INFO("Setting lport %s down in Southbound",
>> pb->logical_port);
>> +            set_pb_chassis_in_sbrec(pb, chassis_rec, false);
>> +        }
>> +}
>> +
>>  static void
>>  binding_lport_set_up(struct binding_lport *b_lport, bool sb_readonly)
>>  {
>> @@ -3393,6 +3410,7 @@ binding_lport_set_down(struct binding_lport
>> *b_lport, bool sb_readonly)
>>      if (sb_readonly || !b_lport || !b_lport->pb->n_up ||
>> !b_lport->pb->up[0]) {
>>          return;
>>      }
>> +    VLOG_INFO("Setting lport %s down in Southbound", b_lport->name);
>>
>>      bool up = false;
>>      sbrec_port_binding_set_up(b_lport->pb, &up, 1);
>> diff --git a/controller/binding.h b/controller/binding.h
>> index 0b9c6994f..5b73c6a4b 100644
>> --- a/controller/binding.h
>> +++ b/controller/binding.h
>> @@ -206,6 +206,11 @@ void set_pb_chassis_in_sbrec(const struct
>> sbrec_port_binding *pb,
>>  void remove_ovn_installed_for_uuid(const struct ovsrec_interface_table *,
>>                                     const struct uuid *);
>>
>> +void port_binding_set_down(const struct sbrec_chassis *chassis_rec,
>> +                           const struct sbrec_port_binding_table
>> *pb_table,
>> +                           const char *iface_id,
>> +                           const struct uuid *pb_uuid);
>> +
>>  /* Corresponds to each Port_Binding.type. */
>>  enum en_lport_type {
>>      LP_UNKNOWN,
>> diff --git a/controller/if-status.c b/controller/if-status.c
>> index ac36a9fb9..8503e5daa 100644
>> --- a/controller/if-status.c
>> +++ b/controller/if-status.c
>> @@ -75,6 +75,9 @@ enum if_state {
>>      OIF_INSTALLED,        /* Interface flows programmed in OVS and binding
>>                             * marked "up" in the binding module.
>>                             */
>> +    OIF_UPDATE_PORT,      /* Logical ports need to be set down, and
>> pb->chassis
>> +                           * removed.
>> +                           */
>>      OIF_MAX,
>>  };
>>
>> @@ -85,18 +88,20 @@ static const char *if_state_names[] = {
>>      [OIF_MARK_UP]          = "MARK_UP",
>>      [OIF_MARK_DOWN]        = "MARK_DOWN",
>>      [OIF_INSTALLED]        = "INSTALLED",
>> +    [OIF_UPDATE_PORT]      = "UPDATE_PORT",
>>  };
>>
>>  /*
>>   *       +----------------------+
>>   * +---> |                      |
>> - * | +-> |         NULL         |
>> <--------------------------------------+++-+
>> - * | |   +----------------------+
>>     |
>> - * | |     ^ release_iface   | claim_iface()
>>    |
>> - * | |     |                 V - sbrec_update_chassis(if sb is rw)
>>    |
>> - * | |   +----------------------+
>>     |
>> - * | |   |                      |
>> <----------------------------------------+ |
>> - * | |   |       CLAIMED        |
>> <--------------------------------------+ | |
>> + * | +-> |         NULL         |
>> + * | |   +----------------------+
>> + * | |     ^ release_iface   | claim_iface()
>> + * | |     |                 V - sbrec_update_chassis(if sb is rw)
>> + * | |   +----------------------+
>> + * | |   |                      |
>> <------------------------------------------+
>> + * | |   |       CLAIMED        |
>> <----------------------------------------+ |
>> + * | |   |                      |
>> <--------------------------------------+ | |
>>   * | |   +----------------------+
>> | | |
>>   * | |                 |  V  ^
>>  | | |
>>   * | |                 |  |  | handle_claims()
>>  | | |
>> @@ -136,31 +141,41 @@ static const char *if_state_names[] = {
>>   * |               V  V
>> | | |
>>   * |   +----------------------+
>> | | |
>>   * |   |                      |  mgr_run()
>>  | | |
>> - * +-- |       MARK_UP        |  - set port up in sb
>>  | | |
>> - *     |                      |  - set ovn-installed in ovs
>> | | |
>> - *     |                      |  mgr_update()
>> | | |
>> - *     +----------------------+  - sbrec_update_chassis if needed
>> | | |
>> - *              |
>> | | |
>> - *              | mgr_update(rcvd port up / ovn_installed & chassis set)
>> | | |
>> - *              V
>> | | |
>> - *     +----------------------+
>> | | |
>> - *     |      INSTALLED       | ------------> claim_iface
>> ---------------+ | |
>> - *     +----------------------+
>>   | |
>> - *              |
>>   | |
>> - *              | release_iface
>>   | |
>> - *              V
>>   | |
>> - *     +----------------------+
>>   | |
>> - *     |                      | ------------> claim_iface
>> -----------------+ |
>> - *     |      MARK_DOWN       | ------> mgr_update(rcvd port down)
>> ----------+
>> - *     |                      | mgr_run()
>> - *     |                      | - set port down in sb
>> - *     |                      | mgr_update()
>> + * +---|       MARK_UP        |  - set port up in sb
>>  | | |
>> + * |   |                      |  - set ovn-installed in ovs
>> | | |
>> + * |   |                      |  mgr_update()
>> | | |
>> + * |   +----------------------+  - sbrec_update_chassis if needed
>> | | |
>> + * |            |
>> | | |
>> + * |            | mgr_update(rcvd port up / ovn_installed & chassis set)
>> | | |
>> + * |            V
>> | | |
>> + * |   +----------------------+
>> | | |
>> + * |   |      INSTALLED       | ------------> claim_iface
>> ---------------+ | |
>> + * |   +----------------------+
>>   | |
>> + * |                  |
>>   | |
>> + * |                  | release_iface
>>   | |
>> + * |mgr_update(       |
>>   | |
>> + * |  rcvd port down) |
>>   | |
>> + * |                  V
>>   | |
>> + * |   +----------------------+
>>   | |
>> + * |   |                      | ------------> claim_iface
>> -----------------+ |
>> + * +---+      MARK_DOWN       | mgr_run()
>>     |
>> + * |   |                      | - set port down in sb
>>     |
>> + * |   |                      | mgr_update(sb is rw)
>>    |
>> + * |   +----------------------+ - sbrec_update_chassis(NULL)
>>    |
>> + * |                  |
>>     |
>> + * |                  | mgr_update(local binding not found)
>>     |
>> + * |                  |
>>     |
>> + * |                  V
>>     |
>> + * |   +----------------------+
>>     |
>> + * |   |                      | ------------> claim_iface
>> -------------------+
>> + * +---+      UPDATE_PORT     | mgr_run()
>>   *     +----------------------+ - sbrec_update_chassis(NULL)
>>   */
>>
>>
>>  struct ovs_iface {
>>      char *id;               /* Extracted from OVS external_ids.iface_id.
>> */
>> +    struct uuid pb_uuid;    /* Port_binding uuid */
>>      enum if_state state;    /* State of the interface in the state
>> machine. */
>>      uint32_t install_seqno; /* Seqno at which this interface is expected
>> to
>>                               * be fully programmed in OVS.  Only used in
>> state
>> @@ -266,6 +281,7 @@ if_status_mgr_claim_iface(struct if_status_mgr *mgr,
>>          iface = ovs_iface_create(mgr, iface_id, OIF_CLAIMED);
>>      }
>>
>> +    memcpy(&iface->pb_uuid, &pb->header_.uuid, sizeof(iface->pb_uuid));
>>      if (!sb_readonly) {
>>          set_pb_chassis_in_sbrec(pb, chassis_rec, true);
>>      }
>> @@ -279,6 +295,7 @@ if_status_mgr_claim_iface(struct if_status_mgr *mgr,
>>          break;
>>      case OIF_INSTALLED:
>>      case OIF_MARK_DOWN:
>> +    case OIF_UPDATE_PORT:
>>          ovs_iface_set_state(mgr, iface, OIF_CLAIMED);
>>          break;
>>      case OIF_MAX:
>> @@ -307,9 +324,9 @@ if_status_mgr_release_iface(struct if_status_mgr *mgr,
>> const char *iface_id)
>>      switch (iface->state) {
>>      case OIF_CLAIMED:
>>      case OIF_INSTALL_FLOWS:
>> -        /* Not yet fully installed interfaces can be safely deleted. */
>> -        ovs_iface_destroy(mgr, iface);
>> -        break;
>> +        /* Not yet fully installed interfaces:
>> +         * pb->chassis still need to be deleted.
>> +         */
>>      case OIF_REM_OLD_OVN_INST:
>>      case OIF_MARK_UP:
>>      case OIF_INSTALLED:
>> @@ -319,6 +336,7 @@ if_status_mgr_release_iface(struct if_status_mgr *mgr,
>> const char *iface_id)
>>          ovs_iface_set_state(mgr, iface, OIF_MARK_DOWN);
>>          break;
>>      case OIF_MARK_DOWN:
>> +    case OIF_UPDATE_PORT:
>>          /* Nothing to do here. */
>>          break;
>>      case OIF_MAX:
>> @@ -339,9 +357,9 @@ if_status_mgr_delete_iface(struct if_status_mgr *mgr,
>> const char *iface_id)
>>      switch (iface->state) {
>>      case OIF_CLAIMED:
>>      case OIF_INSTALL_FLOWS:
>> -        /* Not yet fully installed interfaces can be safely deleted. */
>> -        ovs_iface_destroy(mgr, iface);
>> -        break;
>> +        /* Not yet fully installed interfaces:
>> +         * pb->chassis still need to be deleted.
>> +         */
>>      case OIF_REM_OLD_OVN_INST:
>>      case OIF_MARK_UP:
>>      case OIF_INSTALLED:
>> @@ -351,6 +369,7 @@ if_status_mgr_delete_iface(struct if_status_mgr *mgr,
>> const char *iface_id)
>>          ovs_iface_set_state(mgr, iface, OIF_MARK_DOWN);
>>          break;
>>      case OIF_MARK_DOWN:
>> +    case OIF_UPDATE_PORT:
>>          /* Nothing to do here. */
>>          break;
>>      case OIF_MAX:
>> @@ -405,6 +424,7 @@ if_status_mgr_update(struct if_status_mgr *mgr,
>>                       struct local_binding_data *binding_data,
>>                       const struct sbrec_chassis *chassis_rec,
>>                       const struct ovsrec_interface_table *iface_table,
>> +                     const struct sbrec_port_binding_table *pb_table,
>>                       bool ovs_readonly,
>>                       bool sb_readonly)
>>  {
>> @@ -460,6 +480,10 @@ if_status_mgr_update(struct if_status_mgr *mgr,
>>      HMAPX_FOR_EACH_SAFE (node, &mgr->ifaces_per_state[OIF_MARK_DOWN]) {
>>          struct ovs_iface *iface = node->data;
>>
>> +        if (!local_binding_find(bindings, iface->id)) {
>> +            ovs_iface_set_state(mgr, iface, OIF_UPDATE_PORT);
>> +            continue;
>> +        }
>>          if (!sb_readonly) {
>>              local_binding_set_pb(bindings, iface->id, chassis_rec,
>>                                   NULL, false);
>> @@ -507,6 +531,21 @@ if_status_mgr_update(struct if_status_mgr *mgr,
>>          }
>>      }
>>
>> +    if (!sb_readonly) {
>> +        HMAPX_FOR_EACH_SAFE (node,
>> &mgr->ifaces_per_state[OIF_UPDATE_PORT]) {
>> +            struct ovs_iface *iface = node->data;
>> +            port_binding_set_down(chassis_rec, pb_table, iface->id,
>> +                                  &iface->pb_uuid);
>> +            ovs_iface_destroy(mgr, node->data);
>> +        }
>> +    } else {
>> +        HMAPX_FOR_EACH_SAFE (node,
>> &mgr->ifaces_per_state[OIF_UPDATE_PORT]) {
>> +            struct ovs_iface *iface = node->data;
>> +            static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
>> +            VLOG_INFO_RL(&rl, "Not setting lport %s down as sb is
>> readonly",
>> +                         iface->id);
>> +        }
>> +    }
>>      /* Register for a notification about flows being installed in OVS for
>> all
>>       * newly claimed interfaces for which pb->chassis has been updated.
>>       * Request a seqno update when the flows for new interfaces have been
>> diff --git a/controller/if-status.h b/controller/if-status.h
>> index 203764946..8ba80acd9 100644
>> --- a/controller/if-status.h
>> +++ b/controller/if-status.h
>> @@ -37,6 +37,7 @@ void if_status_mgr_delete_iface(struct if_status_mgr *,
>> const char *iface_id);
>>  void if_status_mgr_update(struct if_status_mgr *, struct
>> local_binding_data *,
>>                            const struct sbrec_chassis *chassis,
>>                            const struct ovsrec_interface_table
>> *iface_table,
>> +                          const struct sbrec_port_binding_table *pb_table,
>>                            bool ovs_readonly,
>>                            bool sb_readonly);
>>  void if_status_mgr_run(struct if_status_mgr *mgr, struct
>> local_binding_data *,
>> diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c
>> index 2d8fee4d6..de90025f0 100644
>> --- a/controller/ovn-controller.c
>> +++ b/controller/ovn-controller.c
>> @@ -5227,6 +5227,8 @@ main(int argc, char *argv[])
>>                      if_status_mgr_update(if_mgr, binding_data, chassis,
>>                                           ovsrec_interface_table_get(
>>                                                      ovs_idl_loop.idl),
>> +                                         sbrec_port_binding_table_get(
>> +                                                    ovnsb_idl_loop.idl),
>>                                           !ovs_idl_txn,
>>                                           !ovnsb_idl_txn);
>>                      stopwatch_stop(IF_STATUS_MGR_UPDATE_STOPWATCH_NAME,
>> diff --git a/tests/system-ovn.at b/tests/system-ovn.at
>> index cae44edee..d7b889a96 100644
>> --- a/tests/system-ovn.at
>> +++ b/tests/system-ovn.at
>> @@ -10881,10 +10881,8 @@ sleep_controller
>>  wake_up_sb
>>  wake_up_controller
>>  check_ovn_uninstalled
>> -# Port_down not always set on iface-id removal
>> -# check_ports_down
>> -# Port_Binding(chassis) not always removed on iface-id removal
>> -# check_ports_unbound
>> +check_ports_down
>> +check_ports_unbound
>>  add_iface_ids
>>  check ovn-nbctl --wait=hv sync
>>
>> @@ -10940,10 +10938,8 @@ sleep_controller
>>  wake_up_sb
>>  wake_up_controller
>>  check_ovn_uninstalled
>> -# Port_down not always set on Interface removal
>> -# check_ports_down
>> -# Port_Binding(chassis) not always removed on Interface removal
>> -# check_ports_unbound
>> +check_ports_down
>> +check_ports_unbound
>>  add_ovs_interfaces
>>  check ovn-nbctl --wait=hv sync
>>
>> --
>> 2.31.1
>>
>>
> Looks good to me, thanks.
> 
> Reviewed-by: Ales Musil <[email protected]>
> 

Thanks, Xavier and Ales!

I applied this to the main branch and backported it to stable branches
down to 22.09.  I have the same mention about older branches, could you
please prepare a custom backport if you have time?

Regards,
Dumitru

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