Namespace_veth: Add funtionality for network namespace, veth ports

Adds functionality for network namespaces and veth/peer ports
to connect the namespaces. The namespaces are tracked outside
of default Linux namespaces to prevent possible disruption of
work outside of VSPerf where a user may create a namespace and
the cleanup code deletes it. The cleanup code only removes
namespaces and veth ports created inside the testcase.

JIRA: VSPERF-310

Change-Id: If8881cafb119f38f052403a1de497e9660187d2e
Signed-off-by: Christian Trautman <ctrautma@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/testcases/testcase.py b/testcases/testcase.py
index e5f8a14c..5f5c9358 100644
--- a/testcases/testcase.py
+++ b/testcases/testcase.py
@@ -234,6 +234,26 @@ class TestCase(object):
         # restore original settings
         S.load_from_dict(self._settings_original)
 
+        # cleanup any namespaces created
+        if os.path.isdir('/tmp/namespaces'):
+            import tools.namespace
+            namespace_list = os.listdir('/tmp/namespaces')
+            if len(namespace_list):
+                self._logger.info('Cleaning up namespaces')
+            for name in namespace_list:
+                tools.namespace.delete_namespace(name)
+            os.rmdir('/tmp/namespaces')
+        # cleanup any veth ports created
+        if os.path.isdir('/tmp/veth'):
+            import tools.veth
+            veth_list = os.listdir('/tmp/veth')
+            if len(veth_list):
+                self._logger.info('Cleaning up veth ports')
+            for eth in veth_list:
+                port1, port2 = eth.split('-')
+                tools.veth.del_veth_port(port1, port2)
+            os.rmdir('/tmp/veth')
+
     def run_report(self):
         """ Report test results
         """