X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FInterfaceUtil.py;h=021e8ed74f0af35ab2381efe7f01bb10a02c5fea;hp=a5f00ad03ecb4f06d778321b3382bd054c9e5806;hb=4152fc66baee098cea4c00e56906c4ecd7578337;hpb=0cc103deccef35abe1b181d262bf44bd2d5e0d35

diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index a5f00ad03e..021e8ed74f 100644
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -507,3 +507,19 @@ class InterfaceUtil(object):
             vat.vat_terminal_exec_cmd('exec show interfaces')
 
         return '{}.{}'.format(interface, sub_id), sw_subif_index
+
+    @staticmethod
+    def vpp_create_loopback(node):
+        """Create loopback interface on VPP node.
+
+        :param node: Node to create loopback interface on.
+        :type node: dict
+        :return: SW interface index.
+        :rtype: int
+        """
+        out = VatExecutor.cmd_from_template(node, "create_loopback.vat")
+        if out[0].get('retval') == 0:
+            return out[0].get('sw_if_index')
+        else:
+            raise RuntimeError('Create loopback failed on node "{}"'
+                               .format(node['host']))