DPDK cannot start port for MCX515CCAT. port 0 verbs maximum priority: 0 expected 8/16

Hi there,

I’m trying to run DPDK l2fwd, but failed with the following message:
net_mlx5: mlx5_flow.c:368: mlx5_flow_discover_priorities(): port 0 verbs maximum priority: 0 expected 8/16.

I have used the latest version of MLNX_OFED driver. I have tried all possible versions of OFED, and it ended up with the same issue.

I’ve been troubling with this issue for several days but has no clue on possible solutions, I found that the ibv_create_flow() function returns 22 which means invalid parameter I guess, but I do not know which parameter might influence the issue.

Please help. Thanks in advance.

BTW, happy Thanksgiving.


Hi @loganwhitevon

Which card are you using? What is the firmware version? DPDK version? OS release?

Please install the latest MLNX_OFED driver and firmware versions, available from the links below. I strongly recommend using an LTS DPDK version.


Hi Chen,

Thanks for replying. Just notice that the email response did not work. Here is the information:

Card: MCX515A-CCAT

Firmware: 16.35.3006

PXE: 3.6.0902

UEFI: 14.29.0015

DPDK: 1811

OS: Ubuntu 1804

Please do not hesitate to let me know if further information is required. Looking forward to your reply.