[yoga] Add support for VNIC_REMOTE_MANAGED

Allow instances to be created with VNIC_TYPE_REMOTE_MANAGED ports.
Those ports are assumed to require remote-managed PCI devices which
means that operators need to tag those as "remote_managed" in the PCI
whitelist if this is the case (there is no meta information or standard
means of querying this information).

The following changes are introduced:

* Handling for VNIC_TYPE_REMOTE_MANAGED ports during allocation of
  resources for instance creation (remote_managed == true in
  InstancePciRequests);

* Usage of the noop os-vif plugin for VNIC_TYPE_REMOTE_MANAGED ports
  in order to avoid the invocation of the local representor plugging
  logic since a networking backend is responsible for that in this
  case;

* Expectation of bind time events for ports of VNIC_TYPE_REMOTE_MANAGED.
  Events for those arrive early from Neutron after a port update (before
  Nova begins to wait in the virt driver code, therefore, Nova is set
  to avoid waiting for plug events for VNIC_TYPE_REMOTE_MANAGED ports;

* Making sure the service version is high enough on all compute services
  before creating instances with ports that have VNIC type
  VNIC_TYPE_REMOTE_MANAGED. Network requests are examined for the presence
  of port ids to determine the VNIC type via Neutron API. If
  remote-managed ports are requested, a compute service version check
  is performed across all cells.

Change-Id: Ica09376951d49bc60ce6e33147477e4fa38b9482
Implements: blueprint integration-with-off-path-network-backends

2 files changed, 2 insertions, 0 deletions

diff --git a/nova/api/openstack/compute/attach_interfaces.py b/nova/api/openstack/compute/attach_interfaces.py
index 6a24a60959..34edf30cb6 100644
--- a/nova/api/openstack/compute/attach_interfaces.py
+++ b/nova/api/openstack/compute/attach_interfaces.py
@@ -178,6 +178,7 @@ class InterfaceAttachmentController(wsgi.Controller):
                 exception.InterfaceAttachPciClaimFailed,
                 exception.InterfaceAttachResourceAllocationFailed,
                 exception.ForbiddenPortsWithAccelerator,
+                exception.ForbiddenWithRemoteManagedPorts,
                 exception.ExtendedResourceRequestOldCompute,
                 ) as e:
             raise exc.HTTPBadRequest(explanation=e.format_message())
diff --git a/nova/api/openstack/compute/servers.py b/nova/api/openstack/compute/servers.py
index 1d6d29b45f..1bfb3db698 100644
--- a/nova/api/openstack/compute/servers.py
+++ b/nova/api/openstack/compute/servers.py
@@ -862,6 +862,7 @@ class ServersController(wsgi.Controller):
                 exception.DeviceProfileError,
                 exception.ComputeHostNotFound,
                 exception.ForbiddenPortsWithAccelerator,
+                exception.ForbiddenWithRemoteManagedPorts,
                 exception.ExtendedResourceRequestOldCompute,
                 ) as error:
             raise exc.HTTPBadRequest(explanation=error.format_message())