Support for RDMA in DPDK

[Cliff Burdick]

> Hi Cliff,
>
> my goal is to be able to use a set of DPDK APIs to allow an
> application to configure a network card (Connect-X or E810-C) to
> transfer the received packets to a location in the RAM with the RDMA
> in order to improve the latency.
>
> Thx,
> Antonio.
>
> On Fri, Dec 2, 2022 at 5:50 PM Cliff Burdick <shaklee3 at gmail.com> wrote:
> >>
> >>
> >> Thank you for the information.
> >>
> >> I would need RDMA from a network card. Is there anything boiling in the
> pot?
> >>
> >> On Thu, Dec 1, 2022 at 7:24 PM Cliff Burdick <shaklee3 at gmail.com>
> wrote:
> >> >
> >> > If you are looking for RDMA to GPU devices, you can use gpudev in
> newer DPDK versions to do it.
> >> >
> >> > On Wed, Nov 30, 2022 at 2:02 AM Antonio Di Bacco <
> a.dibacco.ks at gmail.com> wrote:
> >> >>
> >> >> I would like to understand if DPDK will support officially RDMA
> >> >> through a set of APIs.
> >> >>
> >> >> Regards.
> >
> >
> > Hi Antonio, can you talk about what you're trying to do? The Connect-X
> cards with gpudev can do RDMA. I'm not sure if it works or is supported on
> other cards.
> >
>

Hi Antonio, by RDMA are you specifically referring to a protocol like RoCE,
or do you just mean DMA data to an external interface that's not the CPU?
For the latter you can copy why gpudev does by using external memory
buffers for any arbitrary device.
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