Re: [dts] DDP / testpmd setup

[Rami Rosen <ramirose@gmail.com>]

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Hi, Sebastian,
Regarding rebinding, there are two types:
One is with
dpdk-devbind -b i40e pci_id_of_port
And the second is the ribust one:
rmmod i40e and then modprobe i40e. I am not sure as to which of the two you
aim when talking about rebinding.
I would suggest to start with the first option. It triggers calling the
probe() callback of I40E, and not the full longer and heavier way with I40E
module_exit() and module_init() callbacks

Regarding userspace app for achieving it: you can follow the dpdk testpmd
code, but
this can take quite a time and effort.

Regards,
Rami Rosen


בתאריך יום א׳, 26 באוג׳ 2018, 22:57, מאת Sebastian Foss ‏<
sfo@ingenieurbuero-foss.de>:

> Hi Rami,
>
> I found the switch for testpmd to use a cmd line script instead of using
> interactive mode. Still need to see if loading a ddp persists on the card
> when rebinding the i40e driver instead of vfio / uio.
>
> The kernel i40e driver also seems to have the functions to use AdminQ to
> load DDPs onto the card – however im not sure how to do it from userland.
>
>
>
>
>
> *Von:* Rami Rosen <ramirose@gmail.com>
> *Gesendet:* Sonntag, 26. August 2018 20:59
> *An:* sfo@ingenieurbuero-foss.de
> *Betreff:* Re: [dts] DDP / testpmd setup
>
>
>
> Hi Sebastian,
>
> I don't know of such a way, unfortunately. Also you cannot automate testpmd
>
> as it is to load the profile automatically without going interactive mode.
>
>
>
> Regards,
>
> Rami Rosen
>
> http://ramirose.wix.com/ramirosen
>
>
>
>
>
>
>
>
>
> On Sun, Aug 26, 2018 at 3:18 PM Sebastian Foss <sfo@ingenieurbuero-foss.de>
> wrote:
>
> Hi,
>
> we are using testpmd to store ddp profiles in an Intel X710DA2 NIC. Is
> there a way to have those profiles stored in the NIC permanently – or what
> would be the best solution to have those profiles loaded automatically at
> boot and use a regular kernel driver afterwards ? From what i understand so
> far to use the DPDK functions to load a DDP Profile the UIO or VFIO drivers
> have to be used.
>
>
>
> Thank you!
>
>
>
> Mit freundlichen Grüßen / Best Regards
>
> Sebastian Foss, Electrical Engineering (B. Eng.)
>
> Hardware & Software Development
>
> Geschäftsführer / CEO
>
> SF Engineering UG & Co. KG
>
>
>
>
>
>
>
> --
>
> regards,
>
> Rami Rosen
>

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