Does DPDK supports EPOLL for 10G X550T (ixgbe driver)

[Priya Ramanathan]

Thank you, for the information.
I have a UDPDK stack (with DPDK at the physical layer) for UDP
communication.

I am using VFIO module and binded the 10G X550T NIC to the VFIO module.
Then I wrote a simple server-client code for UDP communication using the
UDPDK APIs with DPDK support, which works fine.
Now, I added the epoll_create, epoll_ctl and epoll_wait commands, and it
looks like it is not working as expected.

Let me go through the l3fwd example and try to understand it better. If I
get any questions, I will get back to you. Thank you.

Regards,
Priya.

On Thu, Jan 19, 2023 at 4:14 PM Stephen Hemminger <
stephen at networkplumber.org> wrote:

> On Thu, 19 Jan 2023 13:43:19 -0600
> Priya Ramanathan <shunmugapriya.ramanathan at gmail.com> wrote:
>
> > Hello,
> >
> > We use two NIC cards - 10G X550T (ixgbe) for the DPDK-based application.
> > The application uses EPOLL for the UDP communication between the server
> and
> > the client.
> > With the kernel driver, the EPOLL works properly, but when we enable DPDK
> > support, we cannot see the communication correctly.
> >
> > I would like to know whether anyone has tested DPDK with EPOLL on the 10G
> > X550T model.
> > Also, please suggest which NIC models have been verified using DPDK with
> > EPOLL for UDP communication. Thank you.
> >
> > Regards,
> > Priya.
>
> DPDK does not directly support UDP it is designed for raw packet
> applications.
> It does not have traditional Linux sockets.
>
> DPDK does support device interrupt and rte_epoll model.
> It requires configuring interrupts and using VFIO.
> See the l3fwd power for an example.
>


-- 
winners do not do different things.They do things differently
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