RE: rte-flow: unmatched ingress traffic default action

[Ori Kam <orika@nvidia.com>]

Hi Jarry,

> -----Original Message-----
> From: Robin Jarry <rjarry@redhat.com>
> Sent: Tuesday, 18 October 2022 11:13
> 
> Hi Ori,
> 
> Ori Kam, Oct 18, 2022 at 09:41:
> > > Should I read "general expectation" as a simple recommendation or is
> > > it a requirement from the RTE flow API?
> >
> > I think the wording in the doc should change since it is not clear. So
> > let me clarify it.
> >
> > The idea of isolated mode is that the DPDK application will only get
> > traffic that the application actively requested.
> >
> > When working in isolated mode (relevant only for ingress traffic), the
> > DPDK port can only receive traffic that the application configured
> > a matching rule. If no matching rule was set the packet is moved to
> > the next application/kernel or dropped if no such application/kernel
> > exists.
> 
> Oh I was not clear enough. I *don't* use the isolated mode. The "general
> expectation" I am referring to seems to be in the non-isolated mode.
> 
> > > Can I expect *all* ingress traffic *not* matching ether_type=0x1234
> > > to be redirected to queues 0 and 1 following the default RSS
> > > algorithm?
> >
> > No, all traffic not matching the rule will be moved to the kernel in
> > case of a bifurcated driver, MLX5 for example, or dropped assuming
> > there is no other application with a matching rule.
> 
> This is also in regular (non-isolated) mode?

No, in non-isolated mode PMD will insert default rules based on the configuration,
for example matching on the mac/vlan

Best,
Ori
> 
> Thanks!
> 
> Robin