yardstick: CLI params support for yardstick TCs

Vswitchperf specific class in yardstick was updated to reflect
new functionality of --test-params. These changes have impact
on vsperf documentation and yardstick samples.
As part of this fix following changes were made:
* trafficgen mode can be executed with default configuration
* yardstick specific TC samples were updated
* dummy traffic generator was enhanced to support back2back
* dummy traffic generator was enhanced to accept traffic
results from configuration

JIRA: VSPERF-422
JIRA: VSPERF-205

Change-Id: Ibeaa6ef46bde453e3ca5dee6e4568fc8c3853521
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, 4 insertions, 3 deletions

diff --git a/vsperf b/vsperf
index ee494dcd..385f7929 100755
--- a/vsperf
+++ b/vsperf
@@ -504,8 +504,11 @@ def main():
     # than both a settings file and environment variables
     settings.load_from_dict(args)
 
+    settings.setValue('mode', args['mode'])
+
     # set dpdk and ovs paths accorfing to VNF and VSWITCH
-    functions.settings_update_paths()
+    if settings.getValue('mode') != 'trafficgen':
+        functions.settings_update_paths()
 
     # if required, handle list-* operations
     handle_list_options(args)
@@ -584,8 +587,6 @@ def main():
     # for backward compatibility
     settings.setValue('WHITELIST_NICS', list(nic['pci'] for nic in nic_list))
 
-    settings.setValue('mode', args['mode'])
-
     # generate results directory name
     date = datetime.datetime.fromtimestamp(time.time())
     results_dir = "results_" + date.strftime('%Y-%m-%d_%H-%M-%S')