Re: [dts] [PATCH V1] tests/ddp_mpls: compatible with iavf and i40evf for vf

["Tu, Lijuan" <lijuan.tu@intel.com>]

> -----Original Message-----
> From: dts <dts-bounces@dpdk.org> On Behalf Of xiewei
> Sent: 2021年3月26日 1:17
> To: dts@dpdk.org
> Cc: Xie, WeiX <weix.xie@intel.com>
> Subject: [dts] [PATCH V1] tests/ddp_mpls: compatible with iavf and i40evf for vf
> 
> iavf has rss hash rx offload capability by default, but i40evf not have.
> So the hash value and rx queue number will be random when receive wrong label
> MPLS packets.
> If want to wrong label packets received by default queue 0, just launch test-pmd
> with parameter "--disable-rss".
> 
> Signed-off-by: xiewei <weix.xie@intel.com>
> ---
>  tests/TestSuite_ddp_mpls.py | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/TestSuite_ddp_mpls.py b/tests/TestSuite_ddp_mpls.py index
> 53fd4a76..f0c28386 100644
> --- a/tests/TestSuite_ddp_mpls.py
> +++ b/tests/TestSuite_ddp_mpls.py
> @@ -39,6 +39,7 @@ from test_case import TestCase  from pmd_output import
> PmdOutput  from settings import get_nic_name  import random
> +import re
> 
>  VM_CORES_MASK = 'all'
>  PF_MAX_QUEUE = 64
> @@ -131,7 +132,12 @@ class Testddp_mpls(TestCase):
>          self.vm0_testpmd.start_testpmd(
>              VM_CORES_MASK,"--port-topology=chained --txq=%s --rxq=%s"
>              % (VF_MAX_QUEUE, VF_MAX_QUEUE))
> -
> +
> +        output = self.vm0_testpmd.execute_cmd('show port info 0')
> +        vf_driver = re.findall("Driver\s*name:\s*(\w+)", output)
> +        if vf_driver[0] == "net_iavf":
> +            self.vm0_testpmd.execute_cmd('quit', '# ')
> +            self.vm0_testpmd.start_testpmd(VM_CORES_MASK,
> + "--port-topology=chained --txq=%s --rxq=%s --disable-rss" %
> + (VF_MAX_QUEUE, VF_MAX_QUEUE))

I think re-launch testpmd is a waste of time, prefer to start testpmd with 'disable-rss` directly.

> 
>      def destroy_vm_env(self):
> 
> --
> 2.17.1