[dts] [dts 3/6] test_plans/pmd_test_plan: update test plan to sync with testcase

[lingwei]

Signed-off-by: lingwei <weix.ling at intel.com>
---
 test_plans/pmd_test_plan.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test_plans/pmd_test_plan.rst b/test_plans/pmd_test_plan.rst
index f84fa55..c4d82cb 100644
--- a/test_plans/pmd_test_plan.rst
+++ b/test_plans/pmd_test_plan.rst
@@ -80,6 +80,13 @@ If using igb_uio::
    modprobe igb_uio
    usertools/dpdk-devbind.py --bind=igb_uio device_bus_id
 
+Case config::
+   For FVL40g, if test 16 Byte Descriptor, need to set the "CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC=y"
+   in ./config/common_base and re-build DPDK.
+
+   For FVL25G, if test 16 Byte Descriptor, need to set the "CONFIG_RTE_LIBRTE_ICE_16BYTE_RX_DESC=y"
+   in ./config/common_base and re-build DPDK.
+
 Test Case: Packet Checking
 ==========================
 
-- 
2.17.1