cli: Modify configuration via CLI

In the past, only a few configuration parameters could be
modified via --test-params CLI argument and it was not easy
to find out their complete list.
This patch adds support for generic modification of any
configuration parameter via CLI argument --test-params
or by "Parameters" section of testcase definition.
Thus it is possible to customize a vsperf configuration
environment per testcase or for each vsperf execution.
Old CLI parameters duration, pkt_sizes, rfc2544_tests
and rfc2889_trials were renamed to TRAFFICGEN_DURATION,
TRAFFICGEN_PKT_SIZES, TRAFFICGEN_RFC2544_TESTS and
TRAFFICGEN_RFC2889_TRIALS to be consistent with
other configuration parameters.

JIRA: VSPERF-375

Change-Id: I50a1f4ff7250d754aa8af0295a9c7c1be8151175
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Christian Trautman <ctrautma@redhat.com>
Reviewed-by: Bill Michalowski <bmichalo@redhat.com>
Reviewed-by: Antonio Fischetti <antonio.fischetti@intel.com>
Reviewed-by: <sridhar.rao@spirent.com>

1 files changed, 11 insertions, 7 deletions

diff --git a/tools/pkt_gen/ixnet/ixnet.py b/tools/pkt_gen/ixnet/ixnet.py
index 52ba1712..6262a10a 100755
--- a/tools/pkt_gen/ixnet/ixnet.py
+++ b/tools/pkt_gen/ixnet/ixnet.py
@@ -151,13 +151,17 @@ class IxNet(trafficgen.ITrafficGenerator):
 
     Currently only the RFC2544 tests are implemented.
     """
-    _script = os.path.join(settings.getValue('TRAFFICGEN_IXIA_3RD_PARTY'),
-                           settings.getValue('TRAFFICGEN_IXNET_TCL_SCRIPT'))
-    _tclsh = tkinter.Tcl()
-    _cfg = None
-    _logger = logging.getLogger(__name__)
-    _params = None
-    _bidir = None
+
+    def __init__(self):
+        """Initialize IXNET members
+        """
+        self._script = os.path.join(settings.getValue('TRAFFICGEN_IXIA_3RD_PARTY'),
+                                    settings.getValue('TRAFFICGEN_IXNET_TCL_SCRIPT'))
+        self._tclsh = tkinter.Tcl()
+        self._cfg = None
+        self._logger = logging.getLogger(__name__)
+        self._params = None
+        self._bidir = None
 
     def run_tcl(self, cmd):
         """Run a TCL script using the TCL interpreter found in ``tkinter``.