[dts] [PATCH V1 2/2]tests/vmdq_dcb:Fix the error of setting parameters before compiling the application

[hanyingya]

Signed-off-by: hanyingya <yingyax.han at intel.com>
---
 tests/TestSuite_vmdq_dcb.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tests/TestSuite_vmdq_dcb.py b/tests/TestSuite_vmdq_dcb.py
index 8641c7c..44abffc 100644
--- a/tests/TestSuite_vmdq_dcb.py
+++ b/tests/TestSuite_vmdq_dcb.py
@@ -93,9 +93,14 @@ class TestVmdqDcb(TestCase):
         """
         Rebuild dpdk
         """
-        self.dut.send_expect("sed -i -e 's/CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=?/"
-                "CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=%s/' ./config/common_base" % nb_queue_per_vm, "#", 20)
-        self.dut.build_install_dpdk(self.target)
+        out = self.dut.send_expect("grep 'CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM' ./config/common_base", "#", 20)
+        vm_num = re.findall(r'\d+', out)[-1]
+        if str(nb_queue_per_vm) == vm_num:
+            return
+        else:
+            self.dut.send_expect("sed -i -e 's/CONFIG_RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=%s/CONFIG_RTE_LIBRTE_I40E_"
+                             "QUEUE_NUM_PER_VM=%s/' ./config/common_base" % (vm_num, nb_queue_per_vm), "#", 20)
+            self.dut.build_install_dpdk(self.target)
 
     def start_application(self, npools, ntcs):
         """
-- 
2.17.2