addons: addressvirtual: enslave macvlans on vrf slaves to the vrf master

Ticket: CM-11803
Reviewed By: dsa, scotte, wkok, nikhil, julien
Testing Done: tested config of address-virtual lines on vrf slaves

This patch does the following:
- addressvirtual: enslaves macvlans created on vrf slaves
to the vrf master
- vrf: when looking for stale slaves on vrf master, skip
macvlan devices. This code does basic checking right now
and can be improved to include more cases.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>

addons/addressvirtual.py

@@ -125,6 +125,11 @@ class addressvirtual(moduleBase):
                               %str(e))
             pass
 
+    def _handle_vrf_slaves(self, macvlan_ifacename, ifaceobj):
+        vrfname = self.ipcmd.link_get_master(ifaceobj.name)
+        if vrfname:
+            self.ipcmd.link_set(macvlan_ifacename, 'master', vrfname)
+
     def _get_macs_from_old_config(self, ifaceobj=None):
         """ This method returns a list of the mac addresses
         in the address-virtual attribute for the bridge. """
@@ -196,6 +201,10 @@ class addressvirtual(moduleBase):
                 if lower_iface_mtu and lower_iface_mtu != self.ipcmd.link_get_mtu(macvlan_ifacename):
                     self.ipcmd.link_set_mtu(macvlan_ifacename, lower_iface_mtu)
 
+            # handle vrf slaves
+            if (ifaceobj.link_privflags & ifaceLinkPrivFlags.VRF_SLAVE):
+                self._handle_vrf_slaves(macvlan_ifacename, ifaceobj)
+
             # Disable IPv6 duplicate address detection on VRR interfaces
             for key, sysval in { 'accept_dad' : '0', 'dad_transmits' : '0' }.iteritems():
                 syskey = 'net.ipv6.conf.%s.%s' % (macvlan_ifacename, key)
@@ -283,8 +292,8 @@ class addressvirtual(moduleBase):
             self._remove_address_config(ifaceobj, address_virtual_list)
             return
 
-        if ifaceobj.upperifaces and \
-           not ifaceobj.link_privflags & ifaceLinkPrivFlags.VRF_SLAVE:
+        if (ifaceobj.upperifaces and
+            not ifaceobj.link_privflags & ifaceLinkPrivFlags.VRF_SLAVE):
             self.log_error('%s: invalid placement of address-virtual lines (must be configured under an interface with no upper interfaces or parent interfaces)'
                 % (ifaceobj.name), ifaceobj)
             return

addons/vrf.py

@@ -483,6 +483,23 @@ class vrf(moduleBase):
                                      vrf_dev_name)
             utils.exec_command(rule_cmd)
 
+    def _is_address_virtual_slaves(self, vrfobj, config_vrfslaves,
+                                   vrfslave):
+        # Address virtual lines on a vrf slave will create
+        # macvlan devices on the vrf slave and enslave them
+        # to the vrf master. This function checks if the
+        # vrf slave is such a macvlan interface.
+        # XXX: additional possible checks that can be done here
+        # are:
+        #  - check if it is also a macvlan device of the
+        #    format <vrf_slave>-v<int> created by the 
+        #    address virtual module
+        vrfslave_lowers = self.ipcmd.link_get_lowers(vrfslave)
+        if vrfslave_lowers:
+            if vrfslave_lowers[0] in config_vrfslaves:
+                return True
+        return False
+
     def _add_vrf_slaves(self, ifaceobj, ifaceobj_getfunc=None):
         running_slaves = self.ipcmd.link_get_lowers(ifaceobj.name)
         config_slaves = ifaceobj.lowerifaces
@@ -510,6 +527,9 @@ class vrf(moduleBase):
         if del_slaves:
             for s in del_slaves:
                 try:
+                    if self._is_address_virtual_slaves(ifaceobj,
+                                                       config_slaves, s):
+                        continue
                     sobj = None
                     if ifaceobj_getfunc:
                         sobj = ifaceobj_getfunc(s)

ifupdownaddons/iproute2.py

@@ -133,6 +133,8 @@ class iproute2(utilsBase):
                     elif citems[i] == 'vrf_slave':
                         linkattrs['kind'] = 'vrf_slave'
                         break
+                    elif citems[i] == 'macvlan' and citems[i + 1] == 'mode':
+                        linkattrs['kind'] = 'macvlan'
                 except Exception as e:
                     if warn:
                         self.logger.debug('%s: parsing error: id, mtu, state, link/ether, vlan, dummy, vxlan, local, remote, ageing, nolearning, vrf, table, vrf_slave are reserved keywords: %s' % (ifname, str(e)))