[dpdk-users] COUNT action not supported on mlx5

[Gerry Wan]

Hi Asaf,

I want to filter some L7 protocols.
Example use cases could be to send all TLS handshakes to a certain queue,
or drop all DNS queries, and I do not want to rely on port numbers to do so.

>From my understanding, the RAW item type does not support ranges in the
specification (I wish it did), but having RAW available will help simulate
some protocols.

Gerry

On Wed, Jul 29, 2020 at 8:26 AM Asaf Penso <asafp at mellanox.com> wrote:

> Hello Gerry,
>
> Regarding your question about RAW. Can you specify your use case?
> In high level planning we'll consider supporting it in 21.02.
>
> Regards,
> Asaf Penso
>
> -----Original Message-----
> From: users <users-bounces at dpdk.org> On Behalf Of Erez Ferber
> Sent: Monday, July 27, 2020 9:25 PM
> To: Gerry Wan <gerryw at stanford.edu>
> Cc: users at dpdk.org
> Subject: Re: [dpdk-users] COUNT action not supported on mlx5
>
> Hi,
>
> One possible condition to get -ENOTSUP is if DevX is disabled on the NIC,
> Have you verified DevX is enabled  ?
> Please check here :
>
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdoc.dpdk.org%2Fguides%2Fnics%2Fmlx5.html&data=02%7C01%7Casafp%40mellanox.com%7C038afadf61c844e6506808d8325a5eed%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C1%7C637314711005622085&sdata=B0O%2FBe6TlY%2BCRDPXcAFyAaBS701iLV5BO%2B6kcqCs4b0%3D&reserved=0
> ---
> enable DevX (required by Direct Rules and other features):
> UCTX_EN=1
> ---
>
> With higher log verbosity, you could check in the application
> initialization if mlx5 PMD returns"DevX is supported" to make sure.
>
> Regards,
> Erez
>
> On Mon, 27 Jul 2020 at 21:12, Gerry Wan <gerryw at stanford.edu> wrote:
>
> > Hello,
> >
> > I'm trying to query per-flow statistics using
> > RTE_FLOW_ACTION_TYPE_COUNT on a Mellanox ConnectX-5 port. I tried
> > extending the flow_filtering sample application with:
> >
> > struct rte_flow_query_count count = {
> >     .reset = 1,
> >     .hits_set = 1,
> >     .bytes_set = 1,
> >     .hits = 0,
> >     .bytes = 0,
> > };
> >
> > // set attr, pattern, etc.
> >
> > action[0].type = RTE_FLOW_ACTION_TYPE_COUNT; action[0].conf = &count;
> > action[1].type = RTE_FLOW_ACTION_TYPE_QUEUE; action[1].conf = &queue;
> > action[2].type = RTE_FLOW_ACTION_TYPE_END;
> >
> > The call to rte_flow_validate() returns with -ENOTSUP, saying the flow
> > cannot be created because the count action is not supported. However,
> > mlx5 documentation
> > (https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdoc
> > .dpdk.org%2Fguides%2Fnics%2Fmlx5.html%23statistics&data=02%7C01%7C
> > asafp%40mellanox.com%7C038afadf61c844e6506808d8325a5eed%7Ca652971c7d2e
> > 4d9ba6a4d149256f461b%7C0%7C1%7C637314711005622085&sdata=pQ7pRgytQB
> > %2F1IUGV2SZR5IrGNMZyMdseuECjIw7uuOE%3D&reserved=0)
> > states that it does indeed support attaching count actions. Without
> > the count action the flow rule configuration works fine.
> >
> > I am using DPDK-20.05 and MLNX_OFED_LINUX-5.0-2.1.8.0, with a
> > ConnectX-5 Virtual Function (could the VF be the issue?). What can be
> > the cause of this?
> >
> > On a related note, is there any plan for mlx5 to support
> > RTE_FLOW_ITEM_TYPE_RAW?
> >
> > Thanks,
> >
>