[dpdk-users] Why testpmd fails to start in VM while l2fwd works in the same VM?

[Charlie Li]

Thanks Jianfeng,

After adding " --txqflags=0xf00 --disable-hw-vlan", testpmd starts to work
for me.

My follow-up is question is -

Why these flags are required in the VM  while not required in the host?

Regards,
Charlie

On Fri, Aug 26, 2016 at 4:55 AM, Tan, Jianfeng <jianfeng.tan at intel.com>
wrote:

> Hi Charlie,
>
> > -----Original Message-----
> > From: users [mailto:users-bounces at dpdk.org] On Behalf Of Charlie Li
> > Sent: Friday, August 26, 2016 1:28 AM
> > To: users at dpdk.org
> > Subject: [dpdk-users] Why testpmd fails to start in VM while l2fwd works
> in
> > the same VM?
> >
> > Hi All,
> >
> > My host and VM both are running Fedora 23.
> >
> > In the host, DPDK (testpmd, l2fwd and l3fwd) works fine.
> >
> > Then I set up OVS with DPDK and pass two (dpdkvhostuser) ports to the VM.
> >
> > In the VM, l2fwd works fine, but testpmd fails to start. Pleas see the
> > attached screenshot of the VM with error messages.
>
> I do not know how to run testpmd. Just a hint, you need to add "
> --txqflags=0xf00 --disable-hw-vlan" when starting testpmd.
>
> Thanks,
> Jianfeng
>
> >
> > Has anybody seen similar issue in the VM?
> >
> > Thanks,
> >
> > Charlie
>