I think you are talking about UABIs (which in linux we actually call uapis).
- [PATCH rdma-next 0/7] Introduce KABIs to query UCONTEXT,... Leon Romanovsky
- Re: [PATCH rdma-next 0/7] Introduce KABIs to query ... Christoph Hellwig
- Re: [PATCH rdma-next 0/7] Introduce KABIs to qu... Leon Romanovsky
- Re: [PATCH rdma-next 0/7] Introduce KABIs t... Christoph Hellwig
- Re: [PATCH rdma-next 0/7] Introduce KAB... Leon Romanovsky
- Re: [PATCH rdma-next 0/7] Introduce KAB... Yishai Hadas
- Re: [PATCH rdma-next 0/7] Introduc... Jason Gunthorpe