tests: vpp_memif fix formatting error in exception

[vpp.git] / src / plugins / memif / test / vpp_memif.py

diff --git a/src/plugins/memif/test/vpp_memif.py b/src/plugins/memif/test/vpp_memif.py
index 9bcac1f..9afed6f 100644 (file)
--- a/src/plugins/memif/test/vpp_memif.py
+++ b/src/plugins/memif/test/vpp_memif.py
@@ -1,9 +1,9 @@
 import socket
+from ipaddress import IPv4Network
 
 import six
 
 from vpp_object import VppObject
-from vpp_ip import VppIpPrefix
 from vpp_papi import VppEnum
 
 
@@ -74,8 +74,9 @@ class VppMemif(VppObject):
         self.buffer_size = buffer_size
         self.hw_addr = hw_addr
         self.sw_if_index = None
-        self.ip_prefix = VppIpPrefix("192.168.%d.%d" %
-                                     (self.if_id + 1, self.role + 1), 24)
+        self.ip_prefix = IPv4Network("192.168.%d.%d/24" %
+                                     (self.if_id + 1, self.role + 1),
+                                     strict=False)
 
     def add_vpp_config(self):
         rv = self._test.vapi.memif_create(
@@ -89,14 +90,11 @@ class VppMemif(VppObject):
             ring_size=self.ring_size,
             buffer_size=self.buffer_size,
             hw_addr=self.hw_addr)
-        try:
-            self.sw_if_index = 0
-        except AttributeError:
-            raise AttributeError('self: %s' % self.__dict__)
         try:
             self.sw_if_index = rv.sw_if_index
         except AttributeError:
-            raise AttributeError("%s %s", self, rv)
+            # rv doesn't have .sw_if_index attribute
+            raise AttributeError("%s %s" % (self, rv))
 
         return self.sw_if_index
 
@@ -125,7 +123,7 @@ class VppMemif(VppObject):
 
     def config_ip4(self):
         return self._test.vapi.sw_interface_add_del_address(
-            sw_if_index=self.sw_if_index, prefix=self.ip_prefix.encode())
+            sw_if_index=self.sw_if_index, prefix=self.ip_prefix)
 
     def remove_vpp_config(self):
         self._test.vapi.memif_delete(self.sw_if_index)