Add port bindings to ports created in Midonet

Currently Midokura uses its own script (mm-ctl) to bind ports. However, support
for using this script is left out of the nova and neutron projects. This causes
confusion and makes deployments unnecessarily complicated for customers using
Havana. This fix is to change Neutron to properly set up port bindings to use
the "midonet" vif driver when creating a port. Corresponding changes will be
submitted to the devstack and Nova projects.

Change-Id: I91f2e4fe7135da0c22fb408081efdc63fff748df
Closes-Bug: 1235134

neutron/extensions/portbindings.py

@@ -44,10 +44,12 @@ VIF_TYPE_BRIDGE = 'bridge'
 VIF_TYPE_802_QBG = '802.1qbg'
 VIF_TYPE_802_QBH = '802.1qbh'
 VIF_TYPE_HYPERV = 'hyperv'
+VIF_TYPE_MIDONET = 'midonet'
 VIF_TYPE_OTHER = 'other'
 VIF_TYPES = [VIF_TYPE_UNBOUND, VIF_TYPE_BINDING_FAILED, VIF_TYPE_OVS,
              VIF_TYPE_IVS, VIF_TYPE_BRIDGE, VIF_TYPE_802_QBG,
-             VIF_TYPE_802_QBH, VIF_TYPE_HYPERV, VIF_TYPE_OTHER]
+             VIF_TYPE_802_QBH, VIF_TYPE_HYPERV, VIF_TYPE_MIDONET,
+             VIF_TYPE_OTHER]
 
 
 EXTENDED_ATTRIBUTES_2_0 = {

neutron/plugins/midonet/plugin.py

@@ -38,9 +38,11 @@ from neutron.db import dhcp_rpc_base
 from neutron.db import external_net_db
 from neutron.db import l3_db
 from neutron.db import models_v2
+from neutron.db import portbindings_db
 from neutron.db import securitygroups_db
 from neutron.extensions import external_net as ext_net
 from neutron.extensions import l3
+from neutron.extensions import portbindings
 from neutron.extensions import securitygroup as ext_sg
 from neutron.openstack.common import excutils
 from neutron.openstack.common import log as logging
@@ -195,13 +197,14 @@ class MidonetPluginException(n_exc.NeutronException):
 
 
 class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
+                      portbindings_db.PortBindingMixin,
                       external_net_db.External_net_db_mixin,
                       l3_db.L3_NAT_db_mixin,
                       agentschedulers_db.DhcpAgentSchedulerDbMixin,
                       securitygroups_db.SecurityGroupDbMixin):
 
     supported_extension_aliases = ['external-net', 'router', 'security-group',
-                                   'agent' 'dhcp_agent_scheduler']
+                                   'agent' 'dhcp_agent_scheduler', 'binding']
     __native_bulk_support = False
 
     def __init__(self):
@@ -229,6 +232,12 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
         self.setup_rpc()
         db.configure_db()
 
+        self.base_binding_dict = {
+            portbindings.VIF_TYPE: portbindings.VIF_TYPE_MIDONET,
+            portbindings.CAPABILITIES: {
+                portbindings.CAP_PORT_FILTER:
+                'security-group' in self.supported_extension_aliases}}
+
     def _get_provider_router(self):
         if self.provider_router is None:
             self.provider_router = self.client.get_router(
@@ -529,7 +538,7 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                 if _is_vif_port(port_data):
                     # Bind security groups to the port
                     sg_ids = self._get_security_groups_on_port(context, port)
-                    self._bind_port_to_sgs(context, port_data, sg_ids)
+                    self._bind_port_to_sgs(context, new_port, sg_ids)
 
                     # Create port chains
                     port_chains = {}
@@ -561,6 +570,8 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                         self.client.add_dhcp_route_option(bridge, cidr, ip,
                                                           METADATA_DEFAULT_IP)
 
+            self._process_portbindings_create_and_update(context,
+                                                         port_data, new_port)
         except Exception as ex:
             # Try removing the MidoNet port before raising an exception.
             with excutils.save_and_reraise_exception():
@@ -569,8 +580,8 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                           {"net_id": port_data["network_id"], "err": ex})
                 self.client.delete_port(bridge_port.get_id())
 
-        LOG.debug(_("MidonetPluginV2.create_port exiting: port=%r"), port_data)
+        LOG.debug(_("MidonetPluginV2.create_port exiting: port=%r"), new_port)
-        return port_data
+        return new_port
 
     def get_port(self, context, id, fields=None):
         """Retrieve port."""
@@ -677,6 +688,9 @@ class MidonetPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
                 sg_ids = self._get_security_groups_on_port(context, port)
                 self._bind_port_to_sgs(context, p, sg_ids)
 
+            self._process_portbindings_create_and_update(context,
+                                                         port['port'],
+                                                         p)
         return p
 
     def create_router(self, context, router):

neutron/tests/unit/midonet/test_midonet_plugin.py

@@ -25,6 +25,8 @@ import os
 import sys
 
 import neutron.common.test_lib as test_lib
+from neutron.extensions import portbindings
+from neutron.tests.unit import _test_extension_portbindings as test_bindings
 import neutron.tests.unit.midonet.mock_lib as mock_lib
 import neutron.tests.unit.test_db_plugin as test_plugin
 import neutron.tests.unit.test_extension_security_group as sg
@@ -138,3 +140,18 @@ class TestMidonetPortsV2(test_plugin.TestPortsV2,
 
     def test_requested_subnet_id_v4_and_v6(self):
         pass
+
+    def test_vif_port_binding(self):
+        with self.port(name='myname') as port:
+            self.assertEqual('midonet', port['port']['binding:vif_type'])
+            self.assertTrue(port['port']['admin_state_up'])
+
+
+class TestMidonetPluginPortBinding(test_bindings.PortBindingsTestCase,
+                                   MidonetPluginV2TestCase):
+
+    VIF_TYPE = portbindings.VIF_TYPE_MIDONET
+    HAS_PORT_FILTER = True
+
+    def setUp(self):
+        super(TestMidonetPluginPortBinding, self).setUp()