ifupdown2 should not allow IP address command under vlan aware bridge stanza

Ticket: CM-6106
Reviewed By: roopa,scotte
Testing Done: ran ifupdown2 regression suite and hand tested

This patch prevents IP address assignment under vlan aware bridges.
This prevents some confusion because a bridge subinterface is required
for layer 3 termination.

addons/address.py

@@ -104,9 +104,12 @@ class address(moduleBase):
         newaddrs = []
         addrs = ifaceobj.get_attr_value('address')
         if addrs:
-            if ifaceobj.role & ifaceRole.SLAVE:
+            if (ifaceobj.role & ifaceRole.SLAVE) or \
+               (ifaceobj.link_kind & ifaceLinkKind.BRIDGE_VLAN_AWARE):
                 # we must not configure an IP address if the interface is enslaved
-                self.log_warn('interface %s is enslaved and cannot have an IP Address' % \
+                # or is a VLAN AWARE BRIDGE
+                self.log_warn('interface %s is enslaved or a vlan aware bridge '
+                              'and cannot have an IP Address' % \
                               (ifaceobj.name))
                 return
             # If user address is not in CIDR notation, convert them to CIDR

addons/bridge.py

@@ -220,6 +220,9 @@ class bridge(moduleBase):
         if ifaceobj.link_type != ifaceLinkType.LINK_NA:
            ifaceobj.link_type = ifaceLinkType.LINK_MASTER
         ifaceobj.link_kind |= ifaceLinkKind.BRIDGE
+        # for special vlan aware bridges, we need to add another bit
+        if ifaceobj.get_attr_value_first('bridge-vlan-aware') == 'yes':
+            ifaceobj.link_kind |= ifaceLinkKind.BRIDGE_VLAN_AWARE
         ifaceobj.role |= ifaceRole.MASTER
         ifaceobj.dependency_type = ifaceDependencyType.MASTER_SLAVE
         return self.parse_port_list(ifaceobj.get_attr_value_first(

ifupdown/iface.py

@@ -44,6 +44,7 @@ class ifaceLinkKind():
     BOND = 0x2
     VLAN = 0x4
     VXLAN = 0x8
+    BRIDGE_VLAN_AWARE = 0x10
 
 class ifaceLinkType():
     LINK_UNKNOWN = 0x0