[dpdk-users] COUNT action not supported on mlx5

[Asaf Penso]

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,
>