Re: FDIR packet distribution with specific multiple RX queues.

[Raghavan V <Raghavan.V2@tatacommunications.com>]

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Hi Stephen,
Thanks for your response.

As our application has limitations while using RSS,
I would prefer a similar approach to RTE_ACTION_TYPE_QUEUE.

Since flow director supports only one RXQ index, I could not be able to achieve desired outcome.

Please suggest if any approach like RTE_ACTION_TYPE_QUEUE but not RSS could match my requirement.

Thanks,
Raghavan V


________________________________
From: Stephen Hemminger <stephen@networkplumber.org>
Sent: Thursday, July 18, 2024 9:06:14 pm
To: Raghavan V <Raghavan.V2@tatacommunications.com>
Cc: dev@dpdk.org <dev@dpdk.org>; users@dpdk.org <users@dpdk.org>
Subject: Re: FDIR packet distribution with specific multiple RX queues.

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On Thu, 18 Jul 2024 11:36:43 +0000
Raghavan V <Raghavan.V2@tatacommunications.com> wrote:

> Is there any way to distribute packets evenly (Like RSS) to specific multiple RX queues in RTE_FLOW_ACTION_TYPE_QUEUE DPDK Flow director?
>
> Desired action:
>
> uint16_t queue_indices[] = {10, 11, 12, 13, 14, 15};
> struct rte_flow_action_queue queue = {.index = queue_indices};
> struct rte_flow_action action[]={
>     [0]={.type = RTE_FLOW_ACTION_TYPE_QUEUE,.conf = &queue},
>     [1]={.type = RTE_FLOW_ACTION_TYPE_END}
> };

You want RTE_FLOW_ACTION_TYPE_RSS

uint16_t queue_indices[] = {10, 11, 12, 13, 14, 15};
struct rte_flow_action_rss rss = {
        .types =  RTE_ETH_RSS_UDP | RTE_ETH_RSS_TCP,
        .queue_num = RTE_DIM(queue_indicies),
        .queue = queue_indicies,
};

struct rte_flow_action action[]={
     [0]={.type = RTE_FLOW_ACTION_TYPE_RSS,.conf = &rss},
    [1]={.type = RTE_FLOW_ACTION_TYPE_END}
};

> Is this action limited to drivers specific?
Yes, drivers implement only what hardware can support.


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