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From: Vladimir Yesin <v.yesin@gmail.com>
To: Asaf Penso <asafp@nvidia.com>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: Feature request: MLX5 DPDK flow item type RAW support
Date: Tue, 1 Mar 2022 11:01:34 +0300
Message-ID: <CAABc1p+jmxUX=Mt-gQ3wOp_8ZN0YwiTn2TuO0HkDJaqB5mb9KA@mail.gmail.com> (raw)
In-Reply-To: <DM5PR1201MB2555307765FDED23148826AECD3F9@DM5PR1201MB2555.namprd12.prod.outlook.com>

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Hello Asaf,
I am currently working on forwarding IQ samples from EttusResearch USRP
n320 SDR receiver to Nvidia GPU (via GPUDirect RDMA) with DPDK.
We are using Connectx-5 NICs.

USRP uses CHDR network protocol (
over UDP for CONTROL and DATA planes. CHDR is very similar to eCPRI,
supported via DPDK flex item.
I am currently working on UHD driver
(https://github.com/EttusResearch/uhd) modification of
to split CONTROL and DATA plane CHDR flows to CPU and GPU respectively with
DPDK flow API via distinct HW queues and mempools.
CHDR header contains packet type field to separate these streams using RAW
or FLEX items...

Currently, DPDK mlx5 PMD for Connectx-5 NICs does not implement flex and
raw items.
The absence of these functions does not allow us to solve our problem.

сб, 26 февр. 2022 г. в 21:08, Asaf Penso <asafp@nvidia.com>:

> Hello Vladimir,
> Would you please elaborate more on your use case?
> What exactly do you wish to match on?
> Currently, there is no plan to implement the RAW item.
> However, with Bluefield 2 DPU, we implemented the flex item, that can be
> useful for you.
> Regards,
> Asaf Penso
> ------------------------------
> *From:* Vladimir Yesin <v.yesin@gmail.com>
> *Sent:* Friday, February 25, 2022 4:28:57 PM
> *To:* users@dpdk.org <users@dpdk.org>
> *Subject:* Feature request: MLX5 DPDK flow item type RAW support
> Current DPDK 21.11 flow API does not support RTE_FLOW_ITEM_TYPE_RAW for
> MLX5.
> I need support of RTE_FLOW_ITEM_TYPE_RAW in DPDK flow API to enqueue some
> ingress packets by content to GPU with support of GPUDirect RDMA and other
> to CPU via distinct HW queues (RTE_FLOW_ACTION_TYPE_QUEUE).
> For now RTE_FLOW_ITEM_TYPE_UDP and RTE_FLOW_ITEM_TYPE_IPV4 filtering and
> enqueueing with address and ports are supported.
> Are there any plans to support RTE_FLOW_ITEM_TYPE_RAW for MLX5?

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  reply	other threads:[~2022-03-01  8:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-25 14:28 Vladimir Yesin
2022-02-26 18:08 ` Asaf Penso
2022-03-01  8:01   ` Vladimir Yesin [this message]
2022-03-02 19:26     ` Asaf Penso

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