From: Kalesh AP Date: Mon, 2 Feb 2026 13:34:12 +0000 (+0530) Subject: RDMA/mlx5: Support rate limit only for Raw Packet QP X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cae42d97d94e9c9803554ca6d577297a2270d471;p=thirdparty%2Fkernel%2Flinux.git RDMA/mlx5: Support rate limit only for Raw Packet QP mlx5 based hardware supports rate limiting only on Raw ethernet QPs. Added an explicit check to fail the operation on any other QP types. The rate limit support has been enahanced in the stack for RC QPs too. Compile tested only. CC: Leon Romanovsky Signed-off-by: Kalesh AP Signed-off-by: Selvin Xavier Link: https://patch.msgid.link/20260202133413.3182578-5-kalesh-anakkur.purayil@broadcom.com Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 69af20790481a..0324909e3151b 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -4362,6 +4362,11 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp, optpar |= ib_mask_to_mlx5_opt(attr_mask); optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st]; + if (attr_mask & IB_QP_RATE_LIMIT && qp->type != IB_QPT_RAW_PACKET) { + err = -EOPNOTSUPP; + goto out; + } + if (qp->type == IB_QPT_RAW_PACKET || qp->flags & IB_QP_CREATE_SOURCE_QPN) { struct mlx5_modify_raw_qp_param raw_qp_param = {};