X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Futil.py;h=d6b77f9d3c3e90756b087f419cadab49e6b0ba07;hb=e3d52803149d58737aad38435361e692d70c9d7a;hp=24e9af44b7d5b248ff4e84ce554b462d2ccd377d;hpb=46a87adf10d41af4b1b14f06bdab33228cbaae95;p=vpp.git

diff --git a/test/util.py b/test/util.py
index 24e9af44b7d..d6b77f9d3c3 100644
--- a/test/util.py
+++ b/test/util.py
@@ -1,3 +1,5 @@
+""" test framework utilities """
+
 import socket
 import sys
 from abc import abstractmethod, ABCMeta
@@ -45,6 +47,11 @@ def ip4n_range(ip4n, s, e):
             for ip in ip4_range(ip4, s, e))
 
 
+def mactobinary(mac):
+    """ Convert the : separated format into binary packet data for the API """
+    return mac.replace(':', '').decode('hex')
+
+
 class NumericConstant(object):
     __metaclass__ = ABCMeta
 
@@ -98,3 +105,16 @@ class Host(object):
         self._mac = mac
         self._ip4 = ip4
         self._ip6 = ip6
+
+
+class ForeignAddressFactory(object):
+    count = 0
+    prefix_len = 24
+    net_template = '10.10.10.{}'
+    net = net_template.format(0) + '/' + str(prefix_len)
+
+    def get_ip4(self):
+        if self.count > 255:
+            raise Exception("Network host address exhaustion")
+        self.count += 1
+        return self.net_template.format(self.count)