[OVN] Check if OVN SB supports virtual ports

Added a check for OVN SB schema, looking for "virtual_parent" in
"Port_Binding" table (added in OVN SB schema 2.5).

This patch removes the code to support OVN without virtual ports.
It is assumed that "virtual_parent" field is present in "Port_Binding"
table.

Closes-Bug: #1949496
Change-Id: I3d01f58dca570537b5e754b331ca4809a7161ae2

neutron/cmd/sanity/checks.py

@@ -52,6 +52,7 @@ MINIMUM_DIBBLER_VERSION = '1.0.1'
 CONNTRACK_GRE_MODULE = 'nf_conntrack_proto_gre'
 OVN_NB_DB_SCHEMA_PORT_GROUP = '5.11'
 OVN_NB_DB_SCHEMA_STATELESS_NAT = '5.17'
+OVN_SB_DB_SCHEMA_VIRTUAL_PORT = '2.5'
 
 
 class OVNCheckType(enum.Enum):
@@ -612,3 +613,17 @@ def ovn_nb_db_schema_stateless_nat_supported():
                   'Exception: %s', e)
         return False
     return True
+
+
+def ovn_sb_db_schema_virtual_port_supported():
+    try:
+        ver = _get_ovn_version(OVNCheckType.sb_db_schema)
+        minver = versionutils.convert_version_to_tuple(
+                 OVN_SB_DB_SCHEMA_VIRTUAL_PORT)
+        if ver < minver:
+            return False
+    except (OSError, RuntimeError, ValueError) as e:
+        LOG.debug('Exception while checking OVN DB schema version. '
+                  'Exception: %s', e)
+        return False
+    return True

neutron/cmd/sanity_check.py

@@ -319,6 +319,14 @@ def check_ovn_nb_db_schema_stateless_nat():
     return result
 
 
+def check_ovn_sb_db_schema_virtual_port():
+    result = checks.ovn_sb_db_schema_virtual_port_supported()
+    if not result:
+        LOG.warning('OVN SB DB schema does not support virtual ports. This '
+                    'support was added in DB schema version 2.5.')
+    return result
+
+
 # Define CLI opts to test specific features, with a callback for the test
 OPTS = [
     BoolOptCallback('ovs_vxlan', check_ovs_vxlan, default=False,
@@ -391,6 +399,10 @@ OPTS = [
                     check_ovn_nb_db_schema_stateless_nat,
                     help=_('Check OVN NB DB schema support stateless NAT'),
                     default=False),
+    BoolOptCallback('ovn_sb_db_schema_virtual_port_support',
+                    check_ovn_sb_db_schema_virtual_port,
+                    help=_('Check OVN SB DB schema support virtual ports'),
+                    default=False),
 ]
 
 
@@ -440,6 +452,7 @@ def enable_tests_from_config():
     if 'ovn' in cfg.CONF.ml2.mechanism_drivers:
         cfg.CONF.set_default('ovn_nb_db_schema_port_group_support', True)
         cfg.CONF.set_default('ovn_nb_db_schema_stateless_nat_support', True)
+        cfg.CONF.set_default('ovn_sb_db_schema_virtual_port_support', True)
 
 
 def all_tests_passed():

neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py

@@ -105,11 +105,6 @@ class OVNClient(object):
             for cmd in commands:
                 txn.add(cmd)
 
-    def _is_virtual_port_supported(self):
-        # TODO(lucasagomes): Remove this method in the future. The
-        # "virtual" port type was added in the version 2.12 of OVN
-        return self._sb_idl.is_col_present('Port_Binding', 'virtual_parent')
-
     def is_external_ports_supported(self):
         return self._nb_idl.is_col_present(
             'Logical_Switch_Port', 'ha_chassis_group')
@@ -259,8 +254,7 @@ class OVNClient(object):
                                          subnet['cidr'].split('/')[1])
 
                 # Check if the port being created is a virtual port
-                if (self._is_virtual_port_supported() and
+                if not port['device_owner']:
-                        not port['device_owner']):
                     parents = self.get_virtual_port_parents(ip_addr, port)
                     if parents:
                         port_type = ovn_const.LSP_TYPE_VIRTUAL
@@ -470,8 +464,7 @@ class OVNClient(object):
             # Check if the parent port was created with the
             # allowed_address_pairs already set
             allowed_address_pairs = port.get('allowed_address_pairs', [])
-            if (self._is_virtual_port_supported() and
+            if (allowed_address_pairs and
-                    allowed_address_pairs and
                     port_info.type != ovn_const.LSP_TYPE_VIRTUAL):
                 addrs = [addr['ip_address'] for addr in allowed_address_pairs]
                 self._set_unset_virtual_port_type(context, txn, port, addrs)
@@ -595,8 +588,7 @@ class OVNClient(object):
             ovn_port = self._nb_idl.lookup('Logical_Switch_Port', port['id'])
             addr_pairs_diff = utils.compute_address_pairs_diff(ovn_port, port)
 
-            if (self._is_virtual_port_supported() and
+            if port_info.type != ovn_const.LSP_TYPE_VIRTUAL:
-                    port_info.type != ovn_const.LSP_TYPE_VIRTUAL):
                 self._set_unset_virtual_port_type(
                     context, txn, port, addr_pairs_diff.added)
                 self._set_unset_virtual_port_type(
@@ -683,8 +675,7 @@ class OVNClient(object):
                 self.add_txns_to_remove_port_dns_records(txn, port_object)
 
             # Check if the port being deleted is a virtual parent
-            if (ovn_port.type != ovn_const.LSP_TYPE_VIRTUAL and
+            if ovn_port.type != ovn_const.LSP_TYPE_VIRTUAL:
-                    self._is_virtual_port_supported()):
                 ls = self._nb_idl.ls_get(ovn_network_name).execute(
                     check_error=True)
                 cmd = self._nb_idl.unset_lswitch_port_to_virtual_type

neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py

@@ -207,9 +207,6 @@ class TestNetworkMTUUpdate(base.TestOVNFunctionalBase):
             second_revision.updated_at)
 
 
-@mock.patch('neutron.plugins.ml2.drivers.ovn.mech_driver.'
-            'ovsdb.ovn_client.OVNClient._is_virtual_port_supported',
-            lambda *args: True)
 class TestVirtualPorts(base.TestOVNFunctionalBase):
 
     def setUp(self):

neutron/tests/unit/db/test_db_base_plugin_v2.py

@@ -62,6 +62,7 @@ from neutron.ipam.drivers.neutrondb_ipam import driver as ipam_driver
 from neutron.ipam import exceptions as ipam_exc
 from neutron.objects import network as network_obj
 from neutron.objects import router as l3_obj
+from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovn_client
 from neutron import policy
 from neutron import quota
 from neutron.quota import resource_registry
@@ -1009,6 +1010,13 @@ class TestV2HTTPResponse(NeutronDbPluginV2TestCase):
 
 
 class TestPortsV2(NeutronDbPluginV2TestCase):
+
+    def setUp(self, **kwargs):
+        super().setUp(**kwargs)
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
+
     def test_create_port_json(self):
         keys = [('admin_state_up', True), ('status', self.port_create_status)]
         with self.network(shared=True) as network:

neutron/tests/unit/extensions/test_portsecurity.py

@@ -29,6 +29,7 @@ from neutron.db import db_base_plugin_v2
 from neutron.db import portsecurity_db
 from neutron.db import securitygroups_db
 from neutron.extensions import securitygroup as ext_sg
+from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovn_client
 from neutron import quota
 from neutron.tests.unit.db import test_db_base_plugin_v2
 from neutron.tests.unit.extensions import test_securitygroup
@@ -186,6 +187,9 @@ class TestPortSecurity(PortSecurityDBTestCase):
         commit_res = mock.patch.object(quota.QuotaEngine, 'commit_reservation')
         self.mock_quota_make_res = make_res.start()
         self.mock_quota_commit_res = commit_res.start()
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
 
     def test_create_network_with_portsecurity_mac(self):
         res = self._create_network('json', 'net1', True)

neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py

@@ -133,6 +133,9 @@ class TestOVNMechanismDriverBase(MechDriverSetupBase,
         p = mock.patch.object(ovn_revision_numbers_db, 'bump_revision')
         p.start()
         self.addCleanup(p.stop)
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
 
     def test_delete_mac_binding_entries(self):
         self.config(group='ovn', ovn_sb_private_key=None)
@@ -159,6 +162,13 @@ class TestOVNMechanismDriverBase(MechDriverSetupBase,
 
 
 class TestOVNMechanismDriver(TestOVNMechanismDriverBase):
+
+    def setUp(self):
+        super().setUp()
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
+
     @mock.patch.object(ovsdb_monitor.OvnInitPGNbIdl, 'from_server')
     @mock.patch.object(ovsdb_monitor, 'short_living_ovsdb_api')
     def test__create_neutron_pg_drop_non_existing(
@@ -2214,6 +2224,9 @@ class OVNMechanismDriverTestCase(MechDriverSetupBase,
         p = mock.patch.object(ovn_utils, 'get_revision_number', return_value=1)
         p.start()
         self.addCleanup(p.stop)
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
 
 
 class TestOVNMechanismDriverBasicGet(test_plugin.TestMl2BasicGet,
@@ -3209,6 +3222,9 @@ class TestOVNMechanismDriverSecurityGroup(MechDriverSetupBase,
         super(TestOVNMechanismDriverSecurityGroup, self).setUp()
         self.ctx = context.get_admin_context()
         revision_plugin.RevisionPlugin()
+        self.mock_vp_parents = mock.patch.object(
+            ovn_client.OVNClient, 'get_virtual_port_parents',
+            return_value=None).start()
 
     def _delete_default_sg_rules(self, security_group_id):
         res = self._list(
@@ -3714,8 +3730,6 @@ class TestOVNVtepPortBinding(OVNMechanismDriverTestCase):
                          ovn_port_info.options["vtep-logical-switch"])
 
 
-@mock.patch.object(ovn_client.OVNClient, '_is_virtual_port_supported',
-                   lambda *args: True)
 class TestOVNVVirtualPort(OVNMechanismDriverTestCase):
 
     def setUp(self):

releasenotes/notes/ovn-support-virtual-ports-3da6dc89937a63c7.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Virtual ports are supported in OVN since version 2.12. Since Yoga, this
+    support is mandatory. The minimum OVN SB schema version must be 2.5.