DPDK with Mellanox ConnectX-5, complaining about mlx5_eth?

[Yasuhiro Ohara]

I would suggest re-installation of MELLANOX OFED, and/or upgrading NIC
firmware (can be done using OFED tools).

Yes, warning on only 1 port is odd. I suspect some kind of mismatch, like
older version of the NIC had only 1 port versions and the soft assumed it,
for example.


2024年11月14日(木) 5:43 CJ Sculti <cj at cj.gy>:

> I'm not using vfio, I just bound interfaces on there one time to test.
> Shouldn't I be able to just use the default mlx5_core driver, without
> binding to uio_pci_generic?
>
>
> On Wed, Nov 13, 2024 at 4:26 PM Thomas Monjalon <thomas at monjalon.net>
> wrote:
>
>> 13/11/2024 21:10, CJ Sculti:
>> > I've been running my application for years on igb_uio with Intel NICs. I
>> > recently replaced them with a Mellanox ConnectX-5 2x 40gbps NIC, updated
>> > the DPDK version my application uses, and compiled with support for mlx5
>> > PMDs. Both 40Gbps ports are up with link, and both are in Ethernet mode,
>> > not Infiniband mode. However, I'm getting complaints when I start my
>> > application about trying to load 'mlx5_eth'? Both are bound to mlx5_core
>> > driver at the moment. When I bind them to vfio-pci, or uio_pci_generic,
>> my
>> > application fails to recognize them at all as valid DPDK devices. Anyone
>> > have any ideas? Also, strange that it only complains about one? I have
>> them
>> > configured in a bond on the kernel, as my application requires that.
>>
>> You must not bind mlx5 devices with VFIO.
>> I recommend reading documentation.
>> You can start here:
>> https://doc.dpdk.org/guides/linux_gsg/linux_drivers.html#bifurcated-driver
>> then
>> https://doc.dpdk.org/guides/platform/mlx5.html#design
>>
>>
>>
>>
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