Closes #1519: Enable parent assignment for interfaces

docs/release-notes/version-2.11.md

@@ -6,6 +6,10 @@
 
 ### New Features
 
+#### Parent Interface Assignments ([#1519](https://github.com/netbox-community/netbox/issues/1519))
+
+Virtual interfaces can now be assigned to a "parent" physical interface, by setting the `parent` field on the Interface model. This is helpful for associating subinterfaces with their physical counterpart. For example, you might assign virtual interfaces Gi0/0.100 and Gi0/0.200 to the physical interface Gi0/0.
+
 #### Mark as Connected Without a Cable ([#3648](https://github.com/netbox-community/netbox/issues/3648))
 
 Cable termination objects (circuit terminations, power feeds, and most device components) can now be marked as "connected" without actually attaching a cable. This helps simplify the process of modeling an infrastructure boundary where you don't necessarily know or care what is connected to the far end of a cable, but still need to designate the near end termination.
@@ -58,6 +62,8 @@ The ObjectChange model (which is used to record the creation, modification, and
   * The `/dcim/rack-groups/` endpoint is now `/dcim/locations/`
 * dcim.Device
   * Added the `location` field
+* dcim.Interface
+  * Added the `parent` field
 * dcim.PowerPanel
   * Renamed `rack_group` field to `location`
 * dcim.Rack

netbox/circuits/models.py

@@ -295,7 +295,7 @@ def to_objectchange(self, action):
         return super().to_objectchange(action, related_object=circuit)
 
     @property
-    def parent(self):
+    def parent_object(self):
         return self.circuit
 
     def get_peer_termination(self):

netbox/dcim/api/serializers.py

@@ -598,6 +598,7 @@ class InterfaceSerializer(TaggedObjectSerializer, CableTerminationSerializer, Co
     url = serializers.HyperlinkedIdentityField(view_name='dcim-api:interface-detail')
     device = NestedDeviceSerializer()
     type = ChoiceField(choices=InterfaceTypeChoices)
+    parent = NestedInterfaceSerializer(required=False, allow_null=True)
     lag = NestedInterfaceSerializer(required=False, allow_null=True)
     mode = ChoiceField(choices=InterfaceModeChoices, allow_blank=True, required=False)
     untagged_vlan = NestedVLANSerializer(required=False, allow_null=True)
@@ -613,10 +614,11 @@ class InterfaceSerializer(TaggedObjectSerializer, CableTerminationSerializer, Co
     class Meta:
         model = Interface
         fields = [
-            'id', 'url', 'device', 'name', 'label', 'type', 'enabled', 'lag', 'mtu', 'mac_address', 'mgmt_only',
-            'description', 'mode', 'untagged_vlan', 'tagged_vlans', 'mark_connected', 'cable', 'cable_peer',
-            'cable_peer_type', 'connected_endpoint', 'connected_endpoint_type', 'connected_endpoint_reachable', 'tags',
-            'custom_fields', 'created', 'last_updated', 'count_ipaddresses', '_occupied',
+            'id', 'url', 'device', 'name', 'label', 'type', 'enabled', 'parent', 'lag', 'mtu', 'mac_address',
+            'mgmt_only', 'description', 'mode', 'untagged_vlan', 'tagged_vlans', 'mark_connected', 'cable',
+            'cable_peer', 'cable_peer_type', 'connected_endpoint', 'connected_endpoint_type',
+            'connected_endpoint_reachable', 'tags', 'custom_fields', 'created', 'last_updated', 'count_ipaddresses',
+            '_occupied',
         ]
 
     def validate(self, data):

netbox/dcim/api/views.py

@@ -522,7 +522,7 @@ class PowerOutletViewSet(PathEndpointMixin, ModelViewSet):
 
 class InterfaceViewSet(PathEndpointMixin, ModelViewSet):
     queryset = Interface.objects.prefetch_related(
-        'device', '_path__destination', 'cable', '_cable_peer', 'ip_addresses', 'tags'
+        'device', 'parent', 'lag', '_path__destination', 'cable', '_cable_peer', 'ip_addresses', 'tags'
     )
     serializer_class = serializers.InterfaceSerializer
     filterset_class = filters.InterfaceFilterSet

netbox/dcim/filters.py

@@ -844,6 +844,11 @@ class InterfaceFilterSet(BaseFilterSet, DeviceComponentFilterSet, CableTerminati
         method='filter_kind',
         label='Kind of interface',
     )
+    parent_id = django_filters.ModelMultipleChoiceFilter(
+        field_name='parent',
+        queryset=Interface.objects.all(),
+        label='Parent interface (ID)',
+    )
     lag_id = django_filters.ModelMultipleChoiceFilter(
         field_name='lag',
         queryset=Interface.objects.all(),

netbox/dcim/forms.py

@@ -2802,6 +2802,24 @@ class InterfaceFilterForm(DeviceComponentFilterForm):
 
 
 class InterfaceForm(BootstrapMixin, InterfaceCommonForm, CustomFieldModelForm):
+    parent = DynamicModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        label='Parent interface',
+        display_field='display_name',
+        query_params={
+            'kind': 'physical',
+        }
+    )
+    lag = DynamicModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        label='LAG interface',
+        display_field='display_name',
+        query_params={
+            'type': 'lag',
+        }
+    )
     untagged_vlan = DynamicModelChoiceField(
         queryset=VLAN.objects.all(),
         required=False,
@@ -2830,13 +2848,12 @@ class InterfaceForm(BootstrapMixin, InterfaceCommonForm, CustomFieldModelForm):
     class Meta:
         model = Interface
         fields = [
-            'device', 'name', 'label', 'type', 'enabled', 'lag', 'mac_address', 'mtu', 'mgmt_only', 'mark_connected',
-            'description', 'mode', 'untagged_vlan', 'tagged_vlans', 'tags',
+            'device', 'name', 'label', 'type', 'enabled', 'parent', 'lag', 'mac_address', 'mtu', 'mgmt_only',
+            'mark_connected', 'description', 'mode', 'untagged_vlan', 'tagged_vlans', 'tags',
         ]
         widgets = {
             'device': forms.HiddenInput(),
             'type': StaticSelect2(),
-            'lag': StaticSelect2(),
             'mode': StaticSelect2(),
         }
         labels = {
@@ -2849,19 +2866,11 @@ class Meta:
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-        if self.is_bound:
-            device = Device.objects.get(pk=self.data['device'])
-        else:
-            device = self.instance.device
+        device = Device.objects.get(pk=self.data['device']) if self.is_bound else self.instance.device
 
-        # Limit LAG choices to interfaces belonging to this device or a peer VC member
-        device_query = Q(device=device)
-        if device.virtual_chassis:
-            device_query |= Q(device__virtual_chassis=device.virtual_chassis)
-        self.fields['lag'].queryset = Interface.objects.filter(
-            device_query,
-            type=InterfaceTypeChoices.TYPE_LAG
-        ).exclude(pk=self.instance.pk)
+        # Restrict parent/LAG interface assignment by device
+        self.fields['parent'].widget.add_query_param('device_id', device.pk)
+        self.fields['lag'].widget.add_query_param('device_id', device.pk)
 
         # Add current site to VLANs query params
         self.fields['untagged_vlan'].widget.add_query_param('site_id', device.site.pk)
@@ -2878,11 +2887,23 @@ class InterfaceCreateForm(ComponentCreateForm, InterfaceCommonForm):
         required=False,
         initial=True
     )
-    lag = forms.ModelChoiceField(
+    parent = DynamicModelChoiceField(
         queryset=Interface.objects.all(),
         required=False,
-        label='Parent LAG',
-        widget=StaticSelect2(),
+        display_field='display_name',
+        query_params={
+            'device_id': '$device',
+            'kind': 'physical',
+        }
+    )
+    lag = DynamicModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        display_field='display_name',
+        query_params={
+            'device_id': '$device',
+            'type': 'lag',
+        }
     )
     mtu = forms.IntegerField(
         required=False,
@@ -2923,23 +2944,17 @@ class InterfaceCreateForm(ComponentCreateForm, InterfaceCommonForm):
         }
     )
     field_order = (
-        'device', 'name_pattern', 'label_pattern', 'type', 'enabled', 'lag', 'mtu', 'mac_address', 'description',
-        'mgmt_only', 'mark_connected', 'mode', 'untagged_vlan', 'tagged_vlans', 'tags'
+        'device', 'name_pattern', 'label_pattern', 'type', 'enabled', 'parent', 'lag', 'mtu', 'mac_address',
+        'description', 'mgmt_only', 'mark_connected', 'mode', 'untagged_vlan', 'tagged_vlans', 'tags'
     )
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-        # Limit LAG choices to interfaces belonging to this device or a peer VC member
+        # Add current site to VLANs query params
         device = Device.objects.get(
             pk=self.initial.get('device') or self.data.get('device')
         )
-        device_query = Q(device=device)
-        if device.virtual_chassis:
-            device_query |= Q(device__virtual_chassis=device.virtual_chassis)
-        self.fields['lag'].queryset = Interface.objects.filter(device_query, type=InterfaceTypeChoices.TYPE_LAG)
-
-        # Add current site to VLANs query params
         self.fields['untagged_vlan'].widget.add_query_param('site_id', device.site.pk)
         self.fields['tagged_vlans'].widget.add_query_param('site_id', device.site.pk)
 
@@ -2956,7 +2971,7 @@ class InterfaceBulkCreateForm(
 
 class InterfaceBulkEditForm(
     form_from_model(Interface, [
-        'label', 'type', 'lag', 'mac_address', 'mtu', 'mgmt_only', 'mark_connected', 'description', 'mode'
+        'label', 'type', 'parent', 'lag', 'mac_address', 'mtu', 'mgmt_only', 'mark_connected', 'description', 'mode',
     ]),
     BootstrapMixin,
     AddRemoveTagsForm,
@@ -2976,6 +2991,22 @@ class InterfaceBulkEditForm(
         required=False,
         widget=BulkEditNullBooleanSelect
     )
+    parent = DynamicModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        display_field='display_name',
+        query_params={
+            'kind': 'physical',
+        }
+    )
+    lag = DynamicModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        display_field='display_name',
+        query_params={
+            'type': 'lag',
+        }
+    )
     mgmt_only = forms.NullBooleanField(
         required=False,
         widget=BulkEditNullBooleanSelect,
@@ -3006,25 +3037,24 @@ class InterfaceBulkEditForm(
 
     class Meta:
         nullable_fields = [
-            'label', 'lag', 'mac_address', 'mtu', 'description', 'mode', 'untagged_vlan', 'tagged_vlans'
+            'label', 'parent', 'lag', 'mac_address', 'mtu', 'description', 'mode', 'untagged_vlan', 'tagged_vlans'
         ]
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-
-        # Limit LAG choices to interfaces which belong to the parent device (or VC master)
         if 'device' in self.initial:
             device = Device.objects.filter(pk=self.initial['device']).first()
-            self.fields['lag'].queryset = Interface.objects.filter(
-                device__in=[device, device.get_vc_master()],
-                type=InterfaceTypeChoices.TYPE_LAG
-            )
+
+            # Restrict parent/LAG interface assignment by device
+            self.fields['parent'].widget.add_query_param('device_id', device.pk)
+            self.fields['lag'].widget.add_query_param('device_id', device.pk)
 
             # Add current site to VLANs query params
             self.fields['untagged_vlan'].widget.add_query_param('site_id', device.site.pk)
             self.fields['tagged_vlans'].widget.add_query_param('site_id', device.site.pk)
+
         else:
-            # See 4523
+            # See #4523
             if 'pk' in self.initial:
                 site = None
                 interfaces = Interface.objects.filter(pk__in=self.initial['pk']).prefetch_related('device__site')
@@ -3042,6 +3072,8 @@ def __init__(self, *args, **kwargs):
                     self.fields['untagged_vlan'].widget.add_query_param('site_id', site.pk)
                     self.fields['tagged_vlans'].widget.add_query_param('site_id', site.pk)
 
+            self.fields['parent'].choices = ()
+            self.fields['parent'].widget.attrs['disabled'] = True
             self.fields['lag'].choices = ()
             self.fields['lag'].widget.attrs['disabled'] = True
 
@@ -3064,6 +3096,12 @@ class InterfaceCSVForm(CustomFieldModelCSVForm):
         queryset=Device.objects.all(),
         to_field_name='name'
     )
+    parent = CSVModelChoiceField(
+        queryset=Interface.objects.all(),
+        required=False,
+        to_field_name='name',
+        help_text='Parent interface'
+    )
     lag = CSVModelChoiceField(
         queryset=Interface.objects.all(),
         required=False,

netbox/dcim/migrations/0129_interface_parent.py

@@ -0,0 +1,17 @@
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dcim', '0128_device_location_populate'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='interface',
+            name='parent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='child_interfaces', to='dcim.interface'),
+        ),
+    ]

netbox/dcim/models/device_component_templates.py

@@ -4,13 +4,11 @@
 
 from dcim.choices import *
 from dcim.constants import *
-from extras.models import ObjectChange
 from extras.utils import extras_features
 from netbox.models import BigIDModel, ChangeLoggingMixin
 from utilities.fields import NaturalOrderingField
 from utilities.querysets import RestrictedQuerySet
 from utilities.ordering import naturalize_interface
-from utilities.utils import serialize_object
 from .device_components import (
     ConsolePort, ConsoleServerPort, DeviceBay, FrontPort, Interface, PowerOutlet, PowerPort, RearPort,
 )