Add bridge field to Interface, VMInterface models

netbox/virtualization/api/serializers.py

@@ -107,6 +107,7 @@ class VMInterfaceSerializer(PrimaryModelSerializer):
     url = serializers.HyperlinkedIdentityField(view_name='virtualization-api:vminterface-detail')
     virtual_machine = NestedVirtualMachineSerializer()
     parent = NestedVMInterfaceSerializer(required=False, allow_null=True)
+    bridge = NestedVMInterfaceSerializer(required=False, allow_null=True)
     mode = ChoiceField(choices=InterfaceModeChoices, allow_blank=True, required=False)
     untagged_vlan = NestedVLANSerializer(required=False, allow_null=True)
     tagged_vlans = SerializedPKRelatedField(
@@ -120,8 +121,8 @@ class VMInterfaceSerializer(PrimaryModelSerializer):
     class Meta:
         model = VMInterface
         fields = [
-            'id', 'url', 'display', 'virtual_machine', 'name', 'enabled', 'parent', 'mtu', 'mac_address', 'description',
-            'mode', 'untagged_vlan', 'tagged_vlans', 'tags', 'custom_fields', 'created', 'last_updated',
+            'id', 'url', 'display', 'virtual_machine', 'name', 'enabled', 'parent', 'bridge', 'mtu', 'mac_address',
+            'description', 'mode', 'untagged_vlan', 'tagged_vlans', 'tags', 'custom_fields', 'created', 'last_updated',
             'count_ipaddresses',
         ]
 

netbox/virtualization/filtersets.py

@@ -264,6 +264,11 @@ class VMInterfaceFilterSet(PrimaryModelFilterSet):
         queryset=VMInterface.objects.all(),
         label='Parent interface (ID)',
     )
+    bridge_id = django_filters.ModelMultipleChoiceFilter(
+        field_name='bridge',
+        queryset=VMInterface.objects.all(),
+        label='Bridged interface (ID)',
+    )
     mac_address = MultiValueMACAddressFilter(
         label='MAC address',
     )

netbox/virtualization/forms/bulk_edit.py

@@ -165,6 +165,10 @@ class VMInterfaceBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldMode
         queryset=VMInterface.objects.all(),
         required=False
     )
+    bridge = DynamicModelChoiceField(
+        queryset=VMInterface.objects.all(),
+        required=False
+    )
     enabled = forms.NullBooleanField(
         required=False,
         widget=BulkEditNullBooleanSelect()
@@ -195,7 +199,7 @@ class VMInterfaceBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldMode
 
     class Meta:
         nullable_fields = [
-            'parent', 'mtu', 'description',
+            'parent', 'bridge', 'mtu', 'description',
         ]
 
     def __init__(self, *args, **kwargs):
@@ -203,8 +207,9 @@ class VMInterfaceBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldMode
         if 'virtual_machine' in self.initial:
             vm_id = self.initial.get('virtual_machine')
 
-            # Restrict parent interface assignment by VM
+            # Restrict parent/bridge interface assignment by VM
             self.fields['parent'].widget.add_query_param('virtual_machine_id', vm_id)
+            self.fields['bridge'].widget.add_query_param('virtual_machine_id', vm_id)
 
             # Limit VLAN choices by virtual machine
             self.fields['untagged_vlan'].widget.add_query_param('available_on_virtualmachine', vm_id)
@@ -231,6 +236,11 @@ class VMInterfaceBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldMode
                     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['bridge'].choices = ()
+            self.fields['bridge'].widget.attrs['disabled'] = True
+
 
 class VMInterfaceBulkRenameForm(BulkRenameForm):
     pk = forms.ModelMultipleChoiceField(

netbox/virtualization/forms/bulk_import.py

@@ -104,6 +104,18 @@ class VMInterfaceCSVForm(CustomFieldModelCSVForm):
         queryset=VirtualMachine.objects.all(),
         to_field_name='name'
     )
+    parent = CSVModelChoiceField(
+        queryset=VMInterface.objects.all(),
+        required=False,
+        to_field_name='name',
+        help_text='Parent interface'
+    )
+    bridge = CSVModelChoiceField(
+        queryset=VMInterface.objects.all(),
+        required=False,
+        to_field_name='name',
+        help_text='Bridged interface'
+    )
     mode = CSVChoiceField(
         choices=InterfaceModeChoices,
         required=False,
@@ -113,7 +125,7 @@ class VMInterfaceCSVForm(CustomFieldModelCSVForm):
     class Meta:
         model = VMInterface
         fields = (
-            'virtual_machine', 'name', 'enabled', 'mac_address', 'mtu', 'description', 'mode',
+            'virtual_machine', 'name', 'parent', 'bridge', 'enabled', 'mac_address', 'mtu', 'description', 'mode',
         )
 
     def clean_enabled(self):

netbox/virtualization/forms/models.py

@@ -277,6 +277,11 @@ class VMInterfaceForm(BootstrapMixin, InterfaceCommonForm, CustomFieldModelForm)
         required=False,
         label='Parent interface'
     )
+    bridge = DynamicModelChoiceField(
+        queryset=VMInterface.objects.all(),
+        required=False,
+        label='Bridged interface'
+    )
     vlan_group = DynamicModelChoiceField(
         queryset=VLANGroup.objects.all(),
         required=False,
@@ -306,8 +311,8 @@ class VMInterfaceForm(BootstrapMixin, InterfaceCommonForm, CustomFieldModelForm)
     class Meta:
         model = VMInterface
         fields = [
-            'virtual_machine', 'name', 'enabled', 'parent', 'mac_address', 'mtu', 'description', 'mode', 'tags',
-            'untagged_vlan', 'tagged_vlans',
+            'virtual_machine', 'name', 'parent', 'bridge', 'enabled', 'mac_address', 'mtu', 'description', 'mode',
+            'tags', 'untagged_vlan', 'tagged_vlans',
         ]
         widgets = {
             'virtual_machine': forms.HiddenInput(),
@@ -326,6 +331,7 @@ class VMInterfaceForm(BootstrapMixin, InterfaceCommonForm, CustomFieldModelForm)
 
         # Restrict parent interface assignment by VM
         self.fields['parent'].widget.add_query_param('virtual_machine_id', vm_id)
+        self.fields['bridge'].widget.add_query_param('virtual_machine_id', vm_id)
 
         # Limit VLAN choices by virtual machine
         self.fields['untagged_vlan'].widget.add_query_param('available_on_virtualmachine', vm_id)

netbox/virtualization/forms/object_create.py

@@ -35,6 +35,13 @@ class VMInterfaceCreateForm(BootstrapMixin, CustomFieldsMixin, InterfaceCommonFo
             'virtual_machine_id': '$virtual_machine',
         }
     )
+    bridge = DynamicModelChoiceField(
+        queryset=VMInterface.objects.all(),
+        required=False,
+        query_params={
+            'virtual_machine_id': '$virtual_machine',
+        }
+    )
     mac_address = forms.CharField(
         required=False,
         label='MAC Address'
@@ -61,7 +68,7 @@ class VMInterfaceCreateForm(BootstrapMixin, CustomFieldsMixin, InterfaceCommonFo
         required=False
     )
     field_order = (
-        'virtual_machine', 'name_pattern', 'enabled', 'parent', 'mtu', 'mac_address', 'description', 'mode',
+        'virtual_machine', 'name_pattern', 'enabled', 'parent', 'bridge', 'mtu', 'mac_address', 'description', 'mode',
         'untagged_vlan', 'tagged_vlans', 'tags'
     )
 

netbox/virtualization/migrations/0026_vminterface_bridge.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.8 on 2021-10-21 20:26
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('virtualization', '0025_extend_tag_support'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vminterface',
+            name='bridge',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='bridge_interfaces', to='virtualization.vminterface'),
+        ),
+    ]

netbox/virtualization/models.py

@@ -378,14 +378,6 @@ class VMInterface(PrimaryModel, BaseInterface):
         max_length=200,
         blank=True
     )
-    parent = models.ForeignKey(
-        to='self',
-        on_delete=models.SET_NULL,
-        related_name='child_interfaces',
-        null=True,
-        blank=True,
-        verbose_name='Parent interface'
-    )
     untagged_vlan = models.ForeignKey(
         to='ipam.VLAN',
         on_delete=models.SET_NULL,
@@ -423,6 +415,12 @@ class VMInterface(PrimaryModel, BaseInterface):
     def clean(self):
         super().clean()
 
+        # Parent validation
+
+        # An interface cannot be its own parent
+        if self.pk and self.parent_id == self.pk:
+            raise ValidationError({'parent': "An interface cannot be its own parent."})
+
         # An interface's parent must belong to the same virtual machine
         if self.parent and self.parent.virtual_machine != self.virtual_machine:
             raise ValidationError({
@@ -430,15 +428,26 @@ class VMInterface(PrimaryModel, BaseInterface):
                           f"({self.parent.virtual_machine})."
             })
 
-        # An interface cannot be its own parent
-        if self.pk and self.parent_id == self.pk:
-            raise ValidationError({'parent': "An interface cannot be its own parent."})
+        # Bridge validation
+
+        # An interface cannot be bridged to itself
+        if self.pk and self.bridge_id == self.pk:
+            raise ValidationError({'bridge': "An interface cannot be bridged to itself."})
+
+        # A bridged interface belong to the same virtual machine
+        if self.bridge and self.bridge.virtual_machine != self.virtual_machine:
+            raise ValidationError({
+                'bridge': f"The selected bridge interface ({self.bridge}) belongs to a different virtual machine "
+                          f"({self.bridge.virtual_machine})."
+            })
+
+        # VLAN validation
 
         # Validate untagged VLAN
         if self.untagged_vlan and self.untagged_vlan.site not in [self.virtual_machine.site, None]:
             raise ValidationError({
                 'untagged_vlan': f"The untagged VLAN ({self.untagged_vlan}) must belong to the same site as the "
-                                 f"interface's parent virtual machine, or it must be global"
+                                 f"interface's parent virtual machine, or it must be global."
             })
 
     def to_objectchange(self, action):

netbox/virtualization/tables.py

@@ -166,9 +166,6 @@ class VMInterfaceTable(BaseInterfaceTable):
     name = tables.Column(
         linkify=True
     )
-    parent = tables.Column(
-        linkify=True
-    )
     tags = TagColumn(
         url_name='virtualization:vminterface_list'
     )
@@ -176,13 +173,19 @@ class VMInterfaceTable(BaseInterfaceTable):
     class Meta(BaseTable.Meta):
         model = VMInterface
         fields = (
-            'pk', 'name', 'virtual_machine', 'enabled', 'parent', 'mac_address', 'mtu', 'mode', 'description', 'tags',
+            'pk', 'name', 'virtual_machine', 'enabled', 'mac_address', 'mtu', 'mode', 'description', 'tags',
             'ip_addresses', 'untagged_vlan', 'tagged_vlans',
         )
-        default_columns = ('pk', 'name', 'virtual_machine', 'enabled', 'parent', 'description')
+        default_columns = ('pk', 'name', 'virtual_machine', 'enabled', 'description')
 
 
 class VirtualMachineVMInterfaceTable(VMInterfaceTable):
+    parent = tables.Column(
+        linkify=True
+    )
+    bridge = tables.Column(
+        linkify=True
+    )
     actions = ButtonsColumn(
         model=VMInterface,
         buttons=('edit', 'delete'),
@@ -192,8 +195,8 @@ class VirtualMachineVMInterfaceTable(VMInterfaceTable):
     class Meta(BaseTable.Meta):
         model = VMInterface
         fields = (
-            'pk', 'name', 'enabled', 'mac_address', 'mtu', 'mode', 'description', 'tags', 'ip_addresses',
-            'untagged_vlan', 'tagged_vlans', 'actions',
+            'pk', 'name', 'enabled', 'parent', 'bridge', 'mac_address', 'mtu', 'mode', 'description', 'tags',
+            'ip_addresses', 'untagged_vlan', 'tagged_vlans', 'actions',
         )
         default_columns = (
             'pk', 'name', 'enabled', 'mac_address', 'mtu', 'mode', 'description', 'ip_addresses', 'actions',