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>

2 files changed, 41 insertions, 3 deletions

diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py
index 01c16a0f..e654ac7e 100644
--- a/vnfs/qemu/qemu.py
+++ b/vnfs/qemu/qemu.py
@@ -81,6 +81,11 @@ class IVnfQemu(IVnf):
                               self._testpmd_fwd_mode, 'io')
             self._testpmd_fwd_mode = 'io'
 
+        guest_smp = int(get_test_param('guest_smp', 0))
+        if guest_smp:
+            override_list = [guest_smp] * (self._number + 1)
+            S.setValue('GUEST_SMP', override_list)
+
         name = 'Client%d' % self._number
         vnc = ':%d' % self._number
         # don't use taskset to affinize main qemu process; It causes hangup
@@ -230,14 +235,18 @@ class IVnfQemu(IVnf):
             stdin=proc.stdout)
         proc.wait()
 
+        guest_core_binding = int(get_test_param('guest_core_binding', 0))
         for cpu in range(0, int(S.getValue('GUEST_SMP')[self._number])):
             match = None
             for line in output.decode(cur_locale).split('\n'):
                 match = re.search(thread_id % cpu, line)
                 if match:
-                    self._affinitize_pid(
-                        S.getValue('GUEST_CORE_BINDING')[self._number][cpu],
-                        match.group(1))
+                    if guest_core_binding:
+                        self._affinitize_pid(guest_core_binding, match.group(1))
+                    else:
+                        self._affinitize_pid(
+                            S.getValue('GUEST_CORE_BINDING')[self._number][cpu],
+                            match.group(1))
                     break
 
             if not match:
@@ -389,6 +398,30 @@ class IVnfQemu(IVnf):
                               '/DPDK/app/test-pmd')
         self.execute_and_wait('make clean')
         self.execute_and_wait('make')
+
+        # get multi-queue settings from CLI
+        guest_testpmd_txq = int(get_test_param('guest_testpmd_txq', 0))
+        if guest_testpmd_txq:
+            override_list = [guest_testpmd_txq] * (self._number + 1)
+            S.setValue('GUEST_TESTPMD_TXQ', override_list)
+
+        guest_testpmd_rxq = int(get_test_param('guest_testpmd_rxq', 0))
+        if guest_testpmd_rxq:
+            override_list = [guest_testpmd_rxq] * (self._number + 1)
+            S.setValue('GUEST_TESTPMD_RXQ', override_list)
+
+        guest_testpmd_nb_cores = \
+            int(get_test_param('guest_testpmd_nb_cores', 0))
+        if guest_testpmd_nb_cores:
+            override_list = [guest_testpmd_nb_cores] * (self._number + 1)
+            S.setValue('GUEST_TESTPMD_NB_CORES', override_list)
+
+        guest_testpmd_cpu_mask = \
+            int(get_test_param('guest_testpmd_cpu_mask', 0))
+        if guest_testpmd_cpu_mask:
+            override_list = [guest_testpmd_cpu_mask] * (self._number + 1)
+            S.setValue('GUEST_TESTPMD_CPU_MASK', override_list)
+
         if int(S.getValue('GUEST_NIC_QUEUES')[self._number]):
             self.execute_and_wait(
                 './testpmd {} -n4 --socket-mem 512 --'.format(
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(