Fix is_up

Change-Id: I0f89a371e58c6119299ee8c21cae69d2efc39898
Signed-off-by: Hongbin Lu <hongbin034@gmail.com>

kuryr/lib/binding/drivers/utils.py

@@ -12,7 +12,6 @@
 import ipaddress
 
 import pyroute2
-from pyroute2.netlink.rtnl import ifinfmsg
 
 from kuryr.lib import constants
 
@@ -82,10 +81,7 @@ def remove_device(ifname):
 
 
 def is_up(interface):
-    flags = interface['flags']
-    if not flags:
-        return False
-    return (flags & ifinfmsg.IFF_UP) == 1
+    return interface.get('state', '') == 'up'
 
 
 def _configure_container_iface(iface, subnets, fixed_ips, mtu=None,

kuryr/tests/unit/binding/drivers/test_utils.py

@@ -14,8 +14,7 @@ from unittest import mock
 import ddt
 from oslo_utils import uuidutils
 
-import pyroute2.ipdb
-from pyroute2.netlink.rtnl import ifinfmsg
+import pyroute2.ipdb.interfaces
 
 from kuryr.lib.binding.drivers import utils
 from kuryr.lib import constants
@@ -44,9 +43,9 @@ class BindingDriversUtilsTest(base.TestCase):
 
     @ddt.data((False), (True))
     def test_is_up(self, interface_flag):
-        fake_interface = {'flags': 0x0}
+        fake_interface = {}
         if interface_flag:
-            fake_interface['flags'] = ifinfmsg.IFF_UP
+            fake_interface['state'] = 'up'
             self.assertEqual(True, utils.is_up(fake_interface))
         else:
             self.assertEqual(False, utils.is_up(fake_interface))
@@ -105,7 +104,7 @@ class BindingDriversUtilsTest(base.TestCase):
             'tenant_id': '51b66b97a12f42a990452967d2c555ac',
             'updated_at': '2016-09-27T08:57:13'}]
 
-        fake_iface = mock.Mock(spec=pyroute2.ipdb.Interface)
+        fake_iface = mock.Mock(spec=pyroute2.ipdb.interfaces.Interface)
         _set_mtu = mock.Mock()
         _set_address = mock.Mock()
         fake_iface.attach_mock(_set_mtu, 'set_mtu')