Re: [PATCH net-next] net/mlx5: Add MLX5_VXLAN config option

Jakub Kicinski
2026-04-29T01:46:33Z

On Tue, 28 Apr 2026 22:44:34 +0000 Marc Harvey wrote:
> Currently, there is no way to disable mlx5 vxlan offloading if vxlan
> is enabled. We've (possibly) seen some minor udp rr and udp stream
> regressions when enabling vxlan, and want a way to disable this
> offloading. Also coupling vxlan offloading with vxlan enablement
> generally limits the flexability of vxlan setups.
>
> Add a new config option for mlx5 vxlan offloading specifically, so
> that users can use vxlan without automatically opting in to the
> offloading.
>
> To keep the same behavior as before, the new config option is enabled
> by default if vxlan is enabled.

Can we delay init of whatever makes the device slow down until the
first vxlan port is registered? A kconfig level optimization of this
sort will have rather limited applicability.