IB/mlx5: Add create and destroy functionality for Raw Packet QP

This patch adds support for Raw Packet QP for the mlx5 device.

Raw Packet QP, unlike other QP types, has no matching mlx5_core_qp
object but rather it is built of RQ/SQ/TIR/TIS/TD mlx5_core object.

Since the SQ and RQ work-queue (WQ) buffers are not contiguous like
other QPs, we allocate separate buffers in the user-space and pass
the address of each one of them separately to the kernel.
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -211,9 +211,35 @@ struct mlx5_ib_qp_trans {
 	u8			resp_depth;
 };
 
+struct mlx5_ib_rq {
+	struct mlx5_ib_qp_base base;
+	struct mlx5_ib_wq	*rq;
+	struct mlx5_ib_ubuffer	ubuffer;
+	struct mlx5_db		*doorbell;
+	u32			tirn;
+	u8			state;
+};
+
+struct mlx5_ib_sq {
+	struct mlx5_ib_qp_base base;
+	struct mlx5_ib_wq	*sq;
+	struct mlx5_ib_ubuffer  ubuffer;
+	struct mlx5_db		*doorbell;
+	u32			tisn;
+	u8			state;
+};
+
+struct mlx5_ib_raw_packet_qp {
+	struct mlx5_ib_sq sq;
+	struct mlx5_ib_rq rq;
+};
+
 struct mlx5_ib_qp {
 	struct ib_qp		ibqp;
+	union {
 		struct mlx5_ib_qp_trans trans_qp;
+		struct mlx5_ib_raw_packet_qp raw_packet_qp;
+	};
 	struct mlx5_buf		buf;
 
 	struct mlx5_db		db;

drivers/infiniband/hw/mlx5/user.h

@@ -145,6 +145,7 @@ struct mlx5_ib_create_qp {
 	__u32	flags;
 	__u32	uidx;
 	__u32	reserved0;
+	__u64	sq_buf_addr;
 };
 
 struct mlx5_ib_create_qp_resp {