[dpdk-dev] Duplicating traffic with RTE Flow

Jan Viktorin viktorin at cesnet.cz
Thu Mar 11 17:32:52 CET 2021
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On Thu, 11 Mar 2021 02:11:07 +0000
"Jiawei(Jonny) Wang" <jiaweiw at nvidia.com> wrote:

> 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?

I assume that it is enabled, see full transcript:

 $ ofed_info 
 MLNX_OFED_LINUX-5.2-1.0.4.0 (OFED-5.2-1.0.4):
 ...
 $ sudo dpdk-testpmd -v -- -i
 EAL: Detected 24 lcore(s)
 EAL: Detected 1 NUMA nodes
 EAL: RTE Version: 'DPDK 20.11.0'
 EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
 EAL: Selected IOVA mode 'PA'
 EAL: No available hugepages reported in hugepages-1048576kB
 EAL: Probing VFIO support...
 EAL: Probe PCI driver: mlx5_pci (15b3:1017) device: 0000:04:00.0 (socket 0)
 mlx5_pci: No available register for Sampler.
 mlx5_pci: Size 0xFFFF is not power of 2, will be aligned to 0x10000.
 EAL: Probe PCI driver: mlx5_pci (15b3:1017) device: 0000:04:00.1 (socket 0)
 mlx5_pci: No available register for Sampler.
 mlx5_pci: Size 0xFFFF is not power of 2, will be aligned to 0x10000.
 EAL: No legacy callbacks, legacy socket not created
 Interactive-mode selected
 testpmd: create a new mbuf pool <mb_pool_0>: n=331456, size=2176, socket=0
 testpmd: preferred mempool ops selected: ring_mp_mc
 Configuring Port 0 (socket 0)
 Port 0: B8:59:9F:E2:09:F6
 Configuring Port 1 (socket 0)
 Port 1: B8:59:9F:E2:09:F7
 Checking link statuses...
 Done
 testpmd> port start 1
 Port 1 is now not stopped
 Please stop the ports first
 Done
 testpmd> set sample_actions 0 port_id id 1 / end
 testpmd> 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
 testpmd> flow create 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
 testpmd> 
 Stopping port 0...
 Stopping ports...
 Done

 Stopping port 1...
 Stopping ports...
 Done

 Shutting down port 0...
 Closing ports...
 Port 0 is closed
 Done

 Shutting down port 1...
 Closing ports...
 Port 1 is closed
 Done

 Bye...

Jan

> 
> Thanks.
> Jonny
> 
> > -----Original Message-----
> > From: Jan Viktorin <viktorin at cesnet.cz>
> > Sent: Monday, March 1, 2021 10:43 PM
> > To: Slava Ovsiienko <viacheslavo at nvidia.com>
> > Cc: Asaf Penso <asafp at nvidia.com>; dev at dpdk.org; Ori Kam
> > <orika at nvidia.com>; Jiawei(Jonny) Wang <jiaweiw at nvidia.com>
> > Subject: Re: [dpdk-dev] Duplicating traffic with RTE Flow
> > 
> > On Mon, 1 Mar 2021 14:34:07 +0000
> > Slava Ovsiienko <viacheslavo at 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 at cesnet.cz>
> > > > Sent: Monday, March 1, 2021 14:21
> > > > To: Asaf Penso <asafp at nvidia.com>
> > > > Cc: dev at dpdk.org; Ori Kam <orika at nvidia.com>; Jiawei(Jonny) Wang
> > > > <jiaweiw at nvidia.com>; Slava Ovsiienko <viacheslavo at 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 at 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 at dpdk.org> On Behalf Of Jan Viktorin
> > > > > >Sent: Friday, September 18, 2020 3:56 PM
> > > > > >To: dev at 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&data=02%7C01%7Casafp%40nvidia.com%7C1a46005bec5245e72  
> > 9e70  
> > > > 8d  
> > > > >
> > > > >85bd24caf%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C0%7C6373  
> > 6030  
> > > > 60  
> > > > >
> > > > >73519816&sdata=EOF%2Fz62crvBZK8rwzwKIWxj5cVlfPVnU3FLmcL9  
> > X2w0  
> > > > %3  
> > > > > >D&reserved=0  
> > >  
>
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