CLI: add Multiqueue params.

This patch implements the following new CLI parameters that
can be used in the --test-params list.

 1. guest_nic_queues, which overrides all GUEST_NIC_QUEUES values
 2. guest_testpmd_txq, which overrides all GUEST_TESTPMD_TXQ
 3. guest_testpmd_rxq, which overrides all GUEST_TESTPMD_RXQ
 4. guest_testpmd_nb_cores, which overrides all GUEST_TESTPMD_NB_CORES
    values
 5. guest_testpmd_cpu_mask, which overrides all GUEST_TESTPMD_CPU_MASK
    values
 6. vswitch_dpdk_multi_queues, which overrides VSWITCH_DPDK_MULTI_QUEUES
 7. guest_smp, which overrides all GUEST_SMP values
 8. guest_core_binding, which overrides all GUEST_CORE_BINDING values

When they are present in the CLI the corresponding settings from the
configuration files will be overridden.

As an example a usage can be:
./vsperf --test-params "guest_nic_queues=2;guest_testpmd_txq=1;\
guest_testpmd_rxq=1;guest_testpmd_nb_cores=1"...

v2: rebase + rework to add other CLI params as suggested and update doc.
v3: changes in 'testusage.rst' doc.

JIRA: VSPERF-371

Change-Id: I140d6e068c1653d21aaa0df27532a48c4a12c151
Signed-off-by: Antonio Fischetti <antonio.fischetti@intel.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>
Reviewed-by: Martin Klozik <martinx.klozik@intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/vnfs/qemu/qemu_dpdk_vhost_user.py b/vnfs/qemu/qemu_dpdk_vhost_user.py
index 51c10242..a25c61ef 100644
--- a/vnfs/qemu/qemu_dpdk_vhost_user.py
+++ b/vnfs/qemu/qemu_dpdk_vhost_user.py
@@ -18,6 +18,7 @@
 import logging
 
 from conf import settings as S
+from conf import get_test_param
 from vnfs.qemu.qemu import IVnfQemu
 
 class QemuDpdkVhostUser(IVnfQemu):
@@ -32,6 +33,10 @@ class QemuDpdkVhostUser(IVnfQemu):
         self._logger = logging.getLogger(__name__)
 
         # multi-queue values
+        guest_nic_queues = int(get_test_param('guest_nic_queues', 0))
+        if guest_nic_queues:
+            override_list = [guest_nic_queues] * (self._number + 1)
+            S.setValue('GUEST_NIC_QUEUES', override_list)
         if int(S.getValue('GUEST_NIC_QUEUES')[self._number]):
             queue_str = ',queues={}'.format(S.getValue('GUEST_NIC_QUEUES')[self._number])
             mq_vector_str = ',mq=on,vectors={}'.format(