bridge: T3137: Let VLAN aware bridge approach the behavior of professional equipment

According to the consensus, the specific behavior of a VLAN aware bridge should conform
to the behavior of professional equipment. This commit makes a significant change to the
behavior of VLAN aware bridge, and has the following behaviors:

1. Disable `vif 1` configuration
2. When the VLAN aware bridge is enabled, the parent interface is always VLAN 1
3. When `native-vlan` is not configured, the default behavior of the device is `native-vlan 1`
4. The VLAN ids forwarded by the bridge are determined by `vif`
5. It has an `enable-vlan` node to enable VLAN awareness
6. VLAN configuration is allowed only when VLAN aware bridge is activated

1 files changed, 16 insertions, 36 deletions

diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 1561d340e..ffe55648c 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -900,49 +900,29 @@ class Interface(Control):
             if 'priority' in bridge_config:
                 self.set_path_cost(bridge_config['priority'])
 
-            vlan_filter = 0
-            vlan_add = set()
-
             del_ifname_vlan_ids = get_vlan_ids(ifname)
-            bridge_vlan_filter = Section.klass(bridge)(bridge, create=True).get_vlan_filter()
+            bridge_vlan_filter = int(Section.klass(bridge)(bridge, create=True).get_vlan_filter())
 
             if bridge_vlan_filter:
-                if 1 in del_ifname_vlan_ids:
-                    del_ifname_vlan_ids.remove(1)
-                vlan_filter = 1
-
-            for vlan in del_ifname_vlan_ids:
-                cmd = f'bridge vlan del dev {ifname} vid {vlan}'
-                self._cmd(cmd)
-
-            if 'native_vlan' in bridge_config:
-                vlan_filter = 1
-                cmd = f'bridge vlan del dev {self.ifname} vid 1'
-                self._cmd(cmd)
-                vlan_id = bridge_config['native_vlan']
-                cmd = f'bridge vlan add dev {self.ifname} vid {vlan_id} pvid untagged master'
-                self._cmd(cmd)
-                vlan_add.add(vlan_id)
-
-            if 'allowed_vlan' in bridge_config:
-                vlan_filter = 1
-                if 'native_vlan' not in bridge_config:
-                    cmd = f'bridge vlan del dev {self.ifname} vid 1'
-                    self._cmd(cmd)
-                for vlan in bridge_config['allowed_vlan']:
-                    cmd = f'bridge vlan add dev {self.ifname} vid {vlan} master'
+
+                # Delete all VLAN IDS configured in the interface first
+                for vlan in del_ifname_vlan_ids:
+                    cmd = f'bridge vlan del dev {ifname} vid {vlan} master'
                     self._cmd(cmd)
-                    vlan_add.add(vlan)
 
-            if vlan_filter:
-                # Setting VLAN ID for the bridge
-                for vlan in vlan_add:
-                    cmd = f'bridge vlan add dev {bridge} vid {vlan} self'
+                if 'native_vlan' in bridge_config:
+                    vlan_id = bridge_config['native_vlan']
+                    cmd = f'bridge vlan add dev {ifname} vid {vlan_id} pvid untagged master'
+                    self._cmd(cmd)
+                else:
+                    # VLAN 1 is the default VLAN for all unlabeled packets
+                    cmd = f'bridge vlan add dev {ifname} vid 1 pvid untagged master'
                     self._cmd(cmd)
 
-                # enable/disable Vlan Filter
-                # When the VLAN aware option is not detected, the setting of `bridge` should not be overwritten
-                Section.klass(bridge)(bridge, create=True).set_vlan_filter(vlan_filter)
+                if 'allowed_vlan' in bridge_config:
+                    for vlan in bridge_config['allowed_vlan']:
+                        cmd = f'bridge vlan add dev {ifname} vid {vlan} master'
+                        self._cmd(cmd)
 
     def set_dhcp(self, enable):
         """