ixia: Support of 1 NIC connection to trafficgen

For some testcases it is useful to have only one connection between
traffic generator and DUT. Thus IxNet class was extended to support
such connection. Feature is enabled if both IXIA ports are set to
the same value.
New integration testcase ixnet_pvp_tput_1nic was created to demonstrate
this feature.
Unused code was removed from 3rd_party/ixia/ixnetrfc2544.tcl to simplify
introduction of new features and to speed up IXIA configuration.

JIRA: VSPERF-503

Change-Id: I92ab24fa58eeb1ccb7f00ac7f3530ffca7b99241
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: Sridhar Rao <sridhar.rao@spirent.com>
Reviewed-by: Trevor Cooper <trevor.cooper@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/docs/testing/user/configguide/trafficgen.rst b/docs/testing/user/configguide/trafficgen.rst
index fff8af07..32fd738b 100644
--- a/docs/testing/user/configguide/trafficgen.rst
+++ b/docs/testing/user/configguide/trafficgen.rst
@@ -290,11 +290,19 @@ Detailed description of options follows:
    unidirectional traffic, it is essential to correctly connect 1st IXIA port to the 1st NIC
    at DUT, i.e. to the first PCI handle from ``WHITELIST_NICS`` list. Otherwise traffic may not
    be able to pass through the vSwitch.
+   **NOTE**: In case that ``TRAFFICGEN_IXIA_PORT1`` and ``TRAFFICGEN_IXIA_PORT2`` are set to the
+   same value, then VSPERF will assume, that there is only one port connection between IXIA
+   and DUT. In this case it must be ensured, that chosen IXIA port is physically connected to the
+   first NIC from ``WHITELIST_NICS`` list.
  * ``TRAFFICGEN_IXIA_PORT2`` - identification of the second dedicated port at ``TRAFFICGEN_IXIA_CARD``
    at IXIA chassis; VSPERF uses two separated ports for traffic generation. In case of
    unidirectional traffic, it is essential to correctly connect 2nd IXIA port to the 2nd NIC
    at DUT, i.e. to the second PCI handle from ``WHITELIST_NICS`` list. Otherwise traffic may not
    be able to pass through the vSwitch.
+   **NOTE**: In case that ``TRAFFICGEN_IXIA_PORT1`` and ``TRAFFICGEN_IXIA_PORT2`` are set to the
+   same value, then VSPERF will assume, that there is only one port connection between IXIA
+   and DUT. In this case it must be ensured, that chosen IXIA port is physically connected to the
+   first NIC from ``WHITELIST_NICS`` list.
  * ``TRAFFICGEN_IXNET_LIB_PATH`` - path to the DUT specific installation of IxNetwork TCL API
  * ``TRAFFICGEN_IXNET_TCL_SCRIPT`` - name of the TCL script, which VSPERF will use for
    communication with IXIA TCL server