network: minimal modifications on Vxlan model

circle/network/migrations/0002_auto_20171110_0041.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2017-11-10 00:41
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+import firewall.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('network', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='vxlan',
+            options={'ordering': ('vni',), 'permissions': (('create_vxlan', 'Can create a Vxlan network.'),), 'verbose_name': 'vxlan', 'verbose_name_plural': 'vxlans'},
+        ),
+        migrations.AlterField(
+            model_name='vxlan',
+            name='name',
+            field=models.CharField(help_text='The short name of the virtual network.', max_length=20, validators=[firewall.fields.val_alfanum], verbose_name='Name'),
+        ),
+        migrations.AlterField(
+            model_name='vxlan',
+            name='vni',
+            field=models.IntegerField(help_text='VXLAN Network Identifier.', unique=True, validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(4095)], verbose_name='VNI'),
+        ),
+    ]

circle/network/models.py

@@ -42,17 +42,19 @@ class Vxlan(AclBase, models.Model):
     ACL_LEVELS = (
         ('user', _('user')),
         ('operator', _('operator')),
+        ('owner', _('owner')),
     )
+    # NOTE: VXLAN VNI's maximal value is 2^24-1, but MAC address generator
+    #       only supports 2^12-1 maximal value.
     vni = models.IntegerField(unique=True,
                               verbose_name=_('VNI'),
                               help_text=_('VXLAN Network Identifier.'),
                               validators=[MinValueValidator(0),
-                                          MaxValueValidator(2 ** 24 - 1)])
+                                          MaxValueValidator(2 ** 12 - 1)])
     vlan = models.ForeignKey(Vlan,
                              verbose_name=_('vlan'),
                              help_text=_('The server vlan.'))
     name = models.CharField(max_length=20,
-                            unique=True,
                             verbose_name=_('Name'),
                             help_text=_('The short name of the '
                                         'virtual network.'),
@@ -77,6 +79,9 @@ class Vxlan(AclBase, models.Model):
         verbose_name = _("vxlan")
         verbose_name_plural = _("vxlans")
         ordering = ('vni', )
+        permissions = (
+            ('create_vxlan', _('Can create a Vxlan network.')),
+        )
 
     def __unicode__(self):
         return self.name