Re: [dpdk-dev] Duplicating traffic with RTE Flow

["Jiawei(Jonny) Wang" <jiaweiw@nvidia.com>]

Hi Jan,

Sorry for late response, 

First rule is invalid, port only works on FDB domain so need 'transfer' here;
Second rule should be ok,  could you please check if the port 1 was enabled on you dpdk application?

Thanks.
Jonny

> -----Original Message-----
> From: Jan Viktorin <viktorin@cesnet.cz>
> Sent: Monday, March 1, 2021 10:43 PM
> To: Slava Ovsiienko <viacheslavo@nvidia.com>
> Cc: Asaf Penso <asafp@nvidia.com>; dev@dpdk.org; Ori Kam
> <orika@nvidia.com>; Jiawei(Jonny) Wang <jiaweiw@nvidia.com>
> Subject: Re: [dpdk-dev] Duplicating traffic with RTE Flow
> 
> On Mon, 1 Mar 2021 14:34:07 +0000
> Slava Ovsiienko <viacheslavo@nvidia.com> wrote:
> 
> > Hi, Jan
> >
> > To use port action (I see it is in your sample action list) the flow
> > should be applied to the FDB domain, ie "transfer" attribute should be
> specified:
> >
> > flow validate 0 ingress transfer...
> 
> As you can see (however, it's a bit messy in the response below, in [1], it is
> better), I tried both. First without transfer and second with. The first gives
> hint "action is valid in transfer mode only" but the second try with transfer
> gives "Operation not supported".
> 
> Jan
> 
> [1] http://mails.dpdk.org/archives/dev/2021-March/200475.html
> 
> >
> > With best regards, Slava
> >
> > > -----Original Message-----
> > > From: Jan Viktorin <viktorin@cesnet.cz>
> > > Sent: Monday, March 1, 2021 14:21
> > > To: Asaf Penso <asafp@nvidia.com>
> > > Cc: dev@dpdk.org; Ori Kam <orika@nvidia.com>; Jiawei(Jonny) Wang
> > > <jiaweiw@nvidia.com>; Slava Ovsiienko <viacheslavo@nvidia.com>
> > > Subject: Re: [dpdk-dev] Duplicating traffic with RTE Flow
> > >
> > > Hello Asaf,
> > >
> > > it is a while we were in touch regarding this topic. Finally, I am
> > > again trying to get work this feature. I've seen that sampling is
> > > already upstreamed which is great. However, I am not very successful
> > > with that. There is nearly no documentation, just [1], I found no examples,
> just commit logs...
> > >
> > > I tried:
> > >
> > >  > set sample_actions 0 port_id id 1 / end  > flow validate 0
> > > ingress pattern end actions sample ratio 1 index 0 / drop / end
> > >  port_flow_complain(): Caught PMD error type 1 (cause unspecified):
> > > port id action is valid in transfer mode only: Operation not
> > > supported  > flow validate
> > > 0 ingress transfer pattern end actions sample ratio 1 index 0 / drop
> > > / end
> > >  port_flow_complain(): Caught PMD error type 1 (cause unspecified):
> > > (no stated reason): Operation not supported
> > >
> > > Using CentOS 7, DPDK 20.11.0, OFED-5.2-1.0.4.
> > > NICs: MT2892 Family [ConnectX-6 Dx] 101d (fw 22.28.1002), MT27800
> > > Family [ConnectX-5] 1017 (fw 16.27.2008).
> > >
> > > My primary goal is to be able to deliver exactly the same packets
> > > both to DPDK and to the Linux kernel. Doing this at RTE Flow level
> > > would be great due to performance and transparency.
> > >
> > > Jan
> > >
> > > [1]
> > > https://doc.dpdk.org/guides/prog_guide/rte_flow.html#action-sample
> > >
> > > On Fri, 18 Sep 2020 14:23:42 +0000
> > > Asaf Penso <asafp@nvidia.com> wrote:
> > >
> > > > Hello Jan,
> > > >
> > > > You can have a look in series [1] where we propose to add APIs to
> > > DPDK20.11 for both mirroring and sampling for packets, with
> > > additional actions of the different traffic.
> > > >
> > > > [1]
> > > > http://patches.dpdk.org/project/dpdk/list/?series=12045
> > > >
> > > > Regards,
> > > > Asaf Penso
> > > >
> > > > >-----Original Message-----
> > > > >From: dev <dev-bounces@dpdk.org> On Behalf Of Jan Viktorin
> > > > >Sent: Friday, September 18, 2020 3:56 PM
> > > > >To: dev@dpdk.org
> > > > >Subject: [dpdk-dev] Duplicating traffic with RTE Flow
> > > > >
> > > > >Hello all,
> > > > >
> > > > >we are looking for a way to duplicate ingress traffic in hardware.
> > > > >
> > > > >There is an example in [1] suggesting to insert two fate actions
> > > > >into the RTE Flow actions array like:
> > > > >
> > > > >  flow create 0 ingress pattern end \
> > > > >      actions queue index 0 / void / queue index 1 / end
> > > > >
> > > > >But our experience is that PMDs reject two fate actions (tried
> > > > >with mlx5). Another similar approach would be to deliver every
> > > > >single packet into two virtual
> > > > >functions:
> > > > >
> > > > >  flow create 0 ingress pattern end \
> > > > >     actions vf index 0 / vf index 1 / end
> > > > >
> > > > >Third possibility was to use passthru:
> > > > >
> > > > >  flow create 0 ingress pattern end \
> > > > >      actions passthru / vf index 0 / end  flow create 0 ingress
> > > > > pattern end \
> > > > >      actions vf index 1 / end
> > > > >
> > > > >Again, tried on mlx5 and it does not support the passthru.
> > > > >
> > > > >Last idea was to use isolate with passthru (to deliver both to
> > > > >DPDK application and to the kernel) but again there was no
> > > > >support on mlx5 for
> > > passthru...
> > > > >
> > > > >  flow isolate 0 true
> > > > >  flow create 0 ingress pattern end actions passthru / rss end /
> > > > > end
> > > > >
> > > > >Is there any other possibility or PMD+NIC that is known to solve
> > > > >such
> > > issue?
> > > > >
> > > > >Thanks
> > > > >Jan Viktorin
> > > > >
> > > > >[1]
> > > > >https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%
> 2
> > > > >Fdoc
> > > > >.dpdk
> > > > >.org%2Fguides%2Fprog_guide%2Frte_flow.html%23table-rte-flow-
> redir
> > > > >ect-
> > > > >queue-5-
> > > >
> > > >3&amp;data=02%7C01%7Casafp%40nvidia.com%7C1a46005bec5245e72
> 9e70
> > > 8d
> > > >
> > > >85bd24caf%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C0%7C6373
> 6030
> > > 60
> > > >
> > > >73519816&amp;sdata=EOF%2Fz62crvBZK8rwzwKIWxj5cVlfPVnU3FLmcL9
> X2w0
> > > %3
> > > > >D&amp;reserved=0
> >