neutron bind port networking_baremetal

 _new_bound_segment

293     def set_binding(self, segment_id, vif_type, vif_details,
294                     status=None):
295         # TODO(rkukura) Verify binding allowed, segment in network
296         self._new_bound_segment = segment_id
297         self._binding.vif_type = vif_type
298         self._binding.vif_details = jsonutils.dumps(vif_details)
299         self._new_port_status = status
300 
301     def continue_binding(self, segment_id, next_segments_to_bind):
302         # TODO(rkukura) Verify binding allowed, segment in network
303         self._new_bound_segment = segment_id
304         self._next_segments_to_bind = next_segments_to_bind

/usr/lib/python2.7/site-packages/networking_baremetal/plugins/ml2

320     def try_to_bind_segment_for_agent(self, context, segment, agent):
321         """Try to bind with segment for agent.
322 
323         :param context: PortContext instance describing the port
324         :param segment: segment dictionary describing segment to bind
325         :param agent: agents_db entry describing agent to bind
326         :returns: True iff segment has been bound for agent
327 
328         Neutron segments api-ref:
329           https://developer.openstack.org/api-ref/network/v2/#segments
330 
331         Example segment dictionary: {'segmentation_id': 'segmentation_id',
332                                      'network_type': 'network_type',
333                                      'id': 'segment_uuid'}
334 
335         Called outside any transaction during bind_port() so that
336         derived MechanismDrivers can use agent_db data along with
337         built-in knowledge of the corresponding agent's capabilities
338         to attempt to bind to the specified network segment for the
339         agent.
340 
341         If the segment can be bound for the agent, this function must
342         call context.set_binding() with appropriate values and then
343         return True. Otherwise, it must return False.
344         """
345         if self.check_segment_for_agent(segment, agent):
346             port = context.current
347             provisioning_blocks.add_provisioning_component(
348                 context._plugin_context, port['id'], resources.PORT,
349                 BAREMETAL_DRV_ENTITY)
350             context.set_binding(segment[api.ID],
351                                 self.get_vif_type(context, agent, segment),
352                                 self.get_vif_details(context, agent, segment))
353             return True
354         else:
355             return False

def get_allowed_network_types(self, agent):

check_segment_for_agent