libvirt: Add objects and notifications for USB controller model.

This patch adds just the objects and notifications required to
support an extra spec to configure a USB controller inside
the guest. This is useful for SPICE consoles using the native
protocol.

Change-Id: I791b16c5bf0e860a188783c863e95dc423998b0a
Signed-off-by: Michael Still <mikal@stillhq.com>

doc/notification_samples/common_payloads/ImageMetaPropsPayload.json

@@ -4,5 +4,5 @@
         "hw_architecture": "x86_64"
     },
     "nova_object.name": "ImageMetaPropsPayload",
-    "nova_object.version": "1.16"
-}
+    "nova_object.version": "1.17"
+}

nova/notifications/objects/image.py

@@ -134,7 +134,8 @@ class ImageMetaPropsPayload(base.NotificationPayloadBase):
     # Version 1.14: Added 'hw_firmware_stateless' field
     # Version 1.15: Added igb value to 'hw_vif_model' enum
     # Version 1.16: Added 'hw_sound_model' field
-    VERSION = '1.16'
+    # Version 1.17: Added 'hw_usb_model' and 'hw_redirected_usb_ports' fields
+    VERSION = '1.17'
 
     # NOTE(efried): This logic currently relies on all of the fields of
     # ImageMetaProps being initialized with no arguments. See the docstring.

nova/objects/fields.py

@@ -869,6 +869,21 @@ class SoundModelType(BaseNovaEnum):
     ALL = (SB16, ES1370, PCSPK, AC97, ICH6, ICH9, USB, VIRTIO,)
 
 
+class USBControllerModelType(BaseNovaEnum):
+    # NOTE(mikal): qemu itself (and therefore libvirt) supports a lot more
+    # USB controllers than this, but they're all very old and don't support
+    # USB3. So while we could turn them on, it would be like adding in IDE
+    # disk bus emulation -- the performance isn't great and its been a very
+    # long time since an operating system was released which genuinely couldn't
+    # use something better.
+
+    NONE = 'none'
+    NEC_XHCI = 'nec-xhci'
+    QEMU_XHCI = 'qemu-xhci'
+
+    ALL = (NONE, NEC_XHCI, QEMU_XHCI)
+
+
 class NotificationPriority(BaseNovaEnum):
     AUDIT = 'audit'
     CRITICAL = 'critical'
@@ -1411,6 +1426,10 @@ class SoundModelField(BaseEnumField):
     AUTO_TYPE = SoundModelType()
 
 
+class USBControllerModelField(BaseEnumField):
+    AUTO_TYPE = USBControllerModelType()
+
+
 class NotificationPriorityField(BaseEnumField):
     AUTO_TYPE = NotificationPriority()
 

nova/objects/image_meta.py

@@ -199,15 +199,19 @@ class ImageMetaProps(base.NovaObject):
     # Version 1.38: Added 'hw_firmware_stateless' field
     # Version 1.39: Added igb value to 'hw_vif_model' enum
     # Version 1.40: Added 'hw_sound_model' field
+    # Version 1.41: Added 'hw_usb_model' and 'hw_redirected_usb_ports' fields
 
     # NOTE(efried): When bumping this version, the version of
     # ImageMetaPropsPayload must also be bumped. See its docstring for details.
-    VERSION = '1.40'
+    VERSION = '1.41'
 
     def obj_make_compatible(self, primitive, target_version):
         super(ImageMetaProps, self).obj_make_compatible(primitive,
                                                         target_version)
         target_version = versionutils.convert_version_to_tuple(target_version)
+        if target_version < (1, 41):
+            primitive.pop('hw_usb_model', None)
+            primitive.pop('hw_redirected_usb_ports', None)
         if target_version < (1, 40):
             primitive.pop('hw_sound_model', None)
         if target_version < (1, 39):
@@ -501,6 +505,12 @@ class ImageMetaProps(base.NovaObject):
         # Name of sound device model to use.
         'hw_sound_model': fields.SoundModelField(),
 
+        # Name of the USB Controller model to use.
+        'hw_usb_model': fields.USBControllerModelField(),
+
+        # Number of USB redirection ports to add to the guest.
+        'hw_redirected_usb_ports': fields.IntegerField(),
+
         # if true download using bittorrent
         'img_bittorrent': fields.FlexibleBooleanField(),
 

nova/tests/functional/notification_sample_tests/test_instance.py

@@ -1244,7 +1244,7 @@ class TestInstanceNotificationSample(
                     'nova_object.data': {},
                     'nova_object.name': 'ImageMetaPropsPayload',
                     'nova_object.namespace': 'nova',
-                    'nova_object.version': '1.16',
+                    'nova_object.version': '1.17',
                 },
                 'image.size': 58145823,
                 'image.tags': [],
@@ -1340,7 +1340,7 @@ class TestInstanceNotificationSample(
                     'nova_object.data': {},
                     'nova_object.name': 'ImageMetaPropsPayload',
                     'nova_object.namespace': 'nova',
-                    'nova_object.version': '1.16',
+                    'nova_object.version': '1.17',
                 },
                 'image.size': 58145823,
                 'image.tags': [],

nova/tests/unit/notifications/objects/test_notification.py

@@ -385,7 +385,7 @@ notification_object_data = {
     # ImageMetaProps, so when you see a fail here for that reason, you must
     # *also* bump the version of ImageMetaPropsPayload. See its docstring for
     # more information.
-    'ImageMetaPropsPayload': '1.16-871cffafce16ab4b6296c1f071262aa8',
+    'ImageMetaPropsPayload': '1.17-60ebfe97483b0abee1ec22220613da40',
     'InstanceActionNotification': '1.0-a73147b93b520ff0061865849d3dfa56',
     'InstanceActionPayload': '1.9-525dcf81b6e4592d935712a2675309dc',
     'InstanceActionRebuildNotification':

nova/tests/unit/objects/test_objects.py

@@ -1105,7 +1105,7 @@ object_data = {
     'HyperVLiveMigrateData': '1.5-b424b27305f259fb3c15d720856585c7',
     'IDEDeviceBus': '1.0-29d4c9f27ac44197f01b6ac1b7e16502',
     'ImageMeta': '1.8-642d1b2eb3e880a367f37d72dd76162d',
-    'ImageMetaProps': '1.40-6cd46dc34799f30e98a3a79d72c3b6eb',
+    'ImageMetaProps': '1.41-1b67f6d0ae2292c3e50b838564e329c8',
     'Instance': '2.8-2727dba5e4a078e6cc848c1f94f7eb24',
     'InstanceAction': '1.2-9a5abc87fdd3af46f45731960651efb5',
     'InstanceActionEvent': '1.4-5b1f361bd81989f8bb2c20bb7e8a4cb4',