RDMA/mlx5: Update all DRIVER QP places to use QP subtype

Instead of overwriting QP init attributes with driver QP subtype,
use that subtype directly. This change will allow us to remove
logic which cached QP init attributes.

Link: https://lore.kernel.org/r/20200427154636.381474-10-leon@kernel.orgReviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/qp.c

@@ -1232,7 +1232,7 @@ static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
 {
 	if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
-	    (attr->qp_type == MLX5_IB_QPT_DCI) ||
+	    (qp->qp_sub_type == MLX5_IB_QPT_DCI) ||
 	    (attr->qp_type == IB_QPT_XRC_INI))
 		return MLX5_SRQ_RQ;
 	else if (!qp->has_rq)
@@ -1241,15 +1241,6 @@ static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
 		return MLX5_NON_ZERO_RQ;
 }
 
-static int is_connected(enum ib_qp_type qp_type)
-{
-	if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC ||
-	    qp_type == MLX5_IB_QPT_DCI)
-		return 1;
-
-	return 0;
-}
-
 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
 				    struct mlx5_ib_qp *qp,
 				    struct mlx5_ib_sq *sq, u32 tdn,
@@ -1897,33 +1888,14 @@ static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
 	return err;
 }
 
-static void configure_responder_scat_cqe(struct ib_qp_init_attr *init_attr,
-					 void *qpc)
-{
-	int rcqe_sz;
-
-	if (init_attr->qp_type == MLX5_IB_QPT_DCI)
-		return;
-
-	rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
-
-	MLX5_SET(qpc, qpc, cs_res,
-		 rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
-				  MLX5_RES_SCAT_DATA32_CQE);
-}
-
 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
 					 struct ib_qp_init_attr *init_attr,
 					 struct mlx5_ib_create_qp *ucmd,
 					 void *qpc)
 {
-	enum ib_qp_type qpt = init_attr->qp_type;
 	int scqe_sz;
 	bool allow_scat_cqe = false;
 
-	if (qpt == IB_QPT_UC || qpt == IB_QPT_UD)
-		return;
-
 	if (ucmd)
 		allow_scat_cqe = ucmd->flags & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
 
@@ -2018,7 +1990,9 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 	spin_lock_init(&qp->sq.lock);
 	spin_lock_init(&qp->rq.lock);
 
-	mlx5_st = to_mlx5_st(init_attr->qp_type);
+	mlx5_st = to_mlx5_st((init_attr->qp_type != IB_QPT_DRIVER) ?
+				     init_attr->qp_type :
+				     qp->qp_sub_type);
 	if (mlx5_st < 0)
 		return -EINVAL;
 
@@ -2240,12 +2214,20 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 		MLX5_SET(qpc, qpc, cd_slave_receive, 1);
 	if (qp->flags & MLX5_IB_QP_PACKET_BASED_CREDIT)
 		MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
-	if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
-		configure_responder_scat_cqe(init_attr, qpc);
+	if (qp->scat_cqe && (init_attr->qp_type == IB_QPT_RC ||
+			     init_attr->qp_type == IB_QPT_UC)) {
+		int rcqe_sz = rcqe_sz =
+			mlx5_ib_get_cqe_size(init_attr->recv_cq);
+
+		MLX5_SET(qpc, qpc, cs_res,
+			 rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
+					  MLX5_RES_SCAT_DATA32_CQE);
+	}
+	if (qp->scat_cqe && (qp->qp_sub_type == MLX5_IB_QPT_DCI ||
+			     init_attr->qp_type == IB_QPT_RC))
 		configure_requester_scat_cqe(dev, init_attr,
 					     udata ? &ucmd : NULL,
 					     qpc);
-	}
 
 	if (qp->rq.wqe_cnt) {
 		MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);