Re: [PATCH net-next 0/4] RDMA/net/ionic: Misc updates

[Abhijit Gangurde <abhijit.gangurde@amd.com>]

On 5/7/26 04:29, Jakub Kicinski wrote:
> On Tue, 5 May 2026 21:19:31 -0700 Eric Joyner wrote:
>> Other smaller additions add a devlink parameter to the ionic ethernet
>> driver for enabling and disabling RDMA,
> My understanding is that the devlink param was expected to change
> the configuration of the device. IOW user can enable/disable RDMA
> to save internal device resources. You seem to be purely preventing
> the auxbus device to be added. So there's nothing gained here compared
> to simply not loading the RDMA driver. What am I missing?
You're right that the current implementation controls only the auxiliary 
bus device registration and doesn't reconfigure firmware resource 
allocation. The intent behind this devlink param is to provide 
per-device granularity for enabling/disabling RDMA. In a system with 
multiple ionic NICs, an administrator may want RDMA active on some 
devices but not others.
That said, if this per-device control justification is sufficient on its 
own, or if firmware-side changes are a hard requirement for this to be 
acceptable?

Thanks,
Abhijit