[dts] [PATCH v1] tests/vf_packet_rxtx: fix test case failures in vf_reset

[Herbert Guan]

Hi Marvin,

This seems to the right approach.  Let's abandon this patch, and a new patch dedicated for
"Clear port stats before send/recv test packets" will be  submitted later.

Best regards,
Herbert

> -----Original Message-----
> From: Liu, Yong [mailto:yong.liu at intel.com]
> Sent: Friday, March 2, 2018 16:01
> To: Herbert Guan <Herbert.Guan at arm.com>; dts at dpdk.org
> Cc: nd <nd at arm.com>
> Subject: RE: [dts] [PATCH v1] tests/vf_packet_rxtx: fix test case failures in
> vf_reset
> 
> Herbert,
> We have also incurred your problem in some VF related cases. Look like most
> VF related cases need one default module (igb_uio or vfio noiommu) in VM.
> As default module should be bound with VM, I'd like to add one global option
> for this default module.
> Meanwhile test suite can change the default value in their own configuration.
> 
> Thanks,
> Marvin
> 
> > -----Original Message-----
> > From: Herbert Guan [mailto:Herbert.Guan at arm.com]
> > Sent: Friday, March 02, 2018 2:58 PM
> > To: Liu, Yong <yong.liu at intel.com>; dts at dpdk.org
> > Cc: nd <nd at arm.com>
> > Subject: RE: [dts] [PATCH v1] tests/vf_packet_rxtx: fix test case
> > failures in vf_reset
> >
> > Marvin,
> >
> > When the execution config file selects driver mode to a certain mode
> > (vfio, igb_uio, etc.), then both host and VM NICs will use this mode
> > in case setup.  If some case need VM to use the igb_uio mode,
> > regardless of the driver mode in execution configure file, we need to
> > ensure the required drivers have been installed.
> >
> > If we want to restore the environment, we need to add some extra logic
> > to the case script.  If the uio or igb_uio driver is not installed,
> > then install it and make flag.  This script need to remove installed
> > drivers that were not installed before running the test.
> >
> > Best regards,
> > Herbert
> >
> > > -----Original Message-----
> > > From: Liu, Yong [mailto:yong.liu at intel.com]
> > > Sent: Friday, March 2, 2018 10:08
> > > To: Herbert Guan <Herbert.Guan at arm.com>; dts at dpdk.org
> > > Subject: RE: [dts] [PATCH v1] tests/vf_packet_rxtx: fix test case
> > failures in
> > > vf_reset
> > >
> > > Hi Herbert,
> > > Why required driver is not insmod be previous setup?
> > > As one principle, we want to limit the influence of environment
> > > change
> > in the
> > > suite.
> > >
> > > Thanks,
> > > Marvin
> > >
> > > > -----Original Message-----
> > > > From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of Herbert Guan
> > > > Sent: Wednesday, February 14, 2018 2:29 PM
> > > > To: dts at dpdk.org
> > > > Cc: Herbert Guan <herbert.guan at arm.com>
> > > > Subject: [dts] [PATCH v1] tests/vf_packet_rxtx: fix test case
> > > > failures in vf_reset
> > > >
> > > > 1) Clear port stats before send/recv test packets
> > > > 2) Ensure igb_uio driver is installed if driver='igb_uio'
> > > >
> > > >
> > > > Signed-off-by: Herbert Guan <herbert.guan at arm.com>
> > > > ---
> > > >  tests/TestSuite_vf_packet_rxtx.py | 4 ++++
> > > >  1 file changed, 4 insertions(+)
> > > >
> > > > diff --git a/tests/TestSuite_vf_packet_rxtx.py
> > > > b/tests/TestSuite_vf_packet_rxtx.py
> > > > index 63f4820..f0b7721 100644
> > > > --- a/tests/TestSuite_vf_packet_rxtx.py
> > > > +++ b/tests/TestSuite_vf_packet_rxtx.py
> > > > @@ -125,6 +125,9 @@ class TestVfPacketRxtx(TestCase):
> > > >      def packet_rx_tx(self, driver='default'):
> > > >
> > > >          if driver == 'igb_uio':
> > > > +            # ensure igb_uio driver is installed
> > > > +            self.dut.send_expect('(lsmod | grep uio) || (modprobe
> > > > + uio)',
> > > > '#')
> > > > +            self.dut.send_expect('(lsmod | grep igb_uio) ||
> > > > (insmod ./%s/kmod/igb_uio.ko)' % self.target,'#')
> > > >              self.setup_2pf_2vf_1vm_env(driver='igb_uio')
> > > >          else:
> > > >              self.setup_2pf_2vf_1vm_env(driver='')
> > > > @@ -279,6 +282,7 @@ class TestVfPacketRxtx(TestCase):
> > > >          rx_port = tx_port
> > > >
> > > >          dst_mac = pmd0_vf0_mac
> > > > +        self.vm0_testpmd.execute_cmd('clear port stats all')
> > > >          self.tester.sendpkt_bg(tx_port, dst_mac)
> > > >
> > > >          #vf port stop/start can trigger reset action
> > > > --
> > > > 1.8.3.1