[dpdk-users] DPDK 20.11 MLX5 testpmd tx_pp 'WQE index ignore feature is required for packet pacing'

[Thomas Monjalon]

09/12/2020 17:03, Alessandro Pagani:
> Hi all,
> 
> I am trying to run dpdk testpmd with Mellanox ConnectX4 Lx (mlx5 driver).
> 
> I am specifying the tx_pp parameter to provide the packet send scheduling
> on mbuf timestamps, but the testpmd fails with the following error:
[...]
> EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:3b:00.0 (socket 0)
> mlx5_pci: No available register for Sampler.
> mlx5_pci: WQE index ignore feature is required for packet pacing
> mlx5_pci: probe of PCI device 0000:3b:00.0 aborted after encountering an
> error: No such device
> common_mlx5: Failed to load driver = mlx5_pci.
> 
> EAL: Requested device 0000:3b:00.0 cannot be used
[...]
> The error messages suggest that "WQE index ignore feature is required for
> packet pacing".
> 
> Anyone knows the reason of this error and how to solve it?

I think it means your device does not support this feature.
But I realize it is not documented here:
http://doc.dpdk.org/guides/nics/mlx5.html#supported-hardware-offloads