> IBTA declares QPN as 24bits, mask input to ensure that kernel
> doesn't get higher bits.
>
> Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> ---
> * Not fully tested yet, passed sanity tests for now.
> ---
> drivers/infiniband/core/ucma.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
> index 0274e9b704be..57e68491a2fd 100644
> --- a/drivers/infiniband/core/ucma.c
> +++ b/drivers/infiniband/core/ucma.c
> @@ -1045,7 +1045,7 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id,
> dst->retry_count = src->retry_count;
> dst->rnr_retry_count = src->rnr_retry_count;
> dst->srq = src->srq;
> - dst->qp_num = src->qp_num;
> + dst->qp_num = src->qp_num & 0xFFFFFF;
Why not isolate IBTA restrictions in the ib_cm?
