[dpdk-users] COUNT action not supported on mlx5

[Erez Ferber]

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://doc.dpdk.org/guides/nics/mlx5.html
---
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://doc.dpdk.org/guides/nics/mlx5.html#statistics)
> 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,
>