DPDK with i225/226 on elkhartlake

SamChen 陳嘉良 SamChen at aaeon.com.tw
Thu Sep 22 04:56:56 CEST 2022


Hi all,
I have switched to using vfio-pci, but still can't use DPDK. Attached are the logs I can't use in I225-IT and I226V for your reference.
If I have obtained other platforms with intel 225/226 systems, I will check again, thanks!

Sam Chen

-----Original Message-----
From: Bruce Richardson <bruce.richardson at intel.com> 
Sent: Wednesday, September 21, 2022 4:57 PM
To: SamChen 陳嘉良 <SamChen at aaeon.com.tw>
Cc: dev at dpdk.org
Subject: Re: DPDK with i225/226 on elkhartlake

On Wed, Sep 21, 2022 at 03:23:09AM +0000, SamChen 陳嘉良 wrote:
>    Hi,
>    We bind the uio_pci_generic driver and use the command of the attached
>    image to execute DPDK. However, we encountered the problem of device
>    cannot be used on i225V/i226V in elkhartlake platform. Currently, the
>    same method works fine for i211 and intel® Killer™ Ethernet E3100 2.5
>    Gbps. Do you have any suggestions? Thanks!
> 
Hi,

while I can't comment on the NIC-specific issues, I would just comment that it's really not recommended to use uio_pci_generic - or any other uio driver - for DPDK any more. You should consider switching to using vfio-pci. Even if there is no iommu enabled, vfio-pci still tends to give a better user experience. If iommu is enabled, you also get a lot more security from the memory protection it provides.

Regards,
/Bruce
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