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Commit 358e42ea authored by Majd Dibbiny's avatar Majd Dibbiny Committed by Doug Ledford
Browse files

IB/mlx5: Add Scatter FCS support for Raw Packet QP 



Enable Scatter FCS in the RQ context when the user passes
Scatter FCS create flag.

Signed-off-by: default avatarMajd Dibbiny <majd@mellanox.com>
Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent b531b909

drivers/infiniband/hw/mlx5/mlx5_ib.h

+1 −0
Original line number Diff line number Diff line
@@ -356,6 +356,7 @@ enum mlx5_ib_qp_flags { 
	MLX5_IB_QP_SIGNATURE_HANDLING           = 1 << 5,

	/* QP uses 1 as its source QP number */

	MLX5_IB_QP_SQPN_QP1			= 1 << 6,

	MLX5_IB_QP_CAP_SCATTER_FCS		= 1 << 7,

};



struct mlx5_umr_wr {

drivers/infiniband/hw/mlx5/qp.c

+19 −1
Original line number Diff line number Diff line
@@ -1028,6 +1028,7 @@ static int get_rq_pas_size(void *qpc) 
static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,

				   struct mlx5_ib_rq *rq, void *qpin)

{

	struct mlx5_ib_qp *mqp = rq->base.container_mibqp;

	__be64 *pas;

	__be64 *qp_pas;

	void *in;
@@ -1051,6 +1052,9 @@ static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev, 
	MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));

	MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));



	if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)

		MLX5_SET(rqc, rqc, scatter_fcs, 1);



	wq = MLX5_ADDR_OF(rqc, rqc, wq);

	MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);

	MLX5_SET(wq, wq, end_padding_mode,
@@ -1136,11 +1140,12 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 
	}



	if (qp->rq.wqe_cnt) {

		rq->base.container_mibqp = qp;



		err = create_raw_packet_qp_rq(dev, rq, in);

		if (err)

			goto err_destroy_sq;



		rq->base.container_mibqp = qp;



		err = create_raw_packet_qp_tir(dev, rq, tdn);

		if (err)
@@ -1252,6 +1257,19 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, 
			return -EOPNOTSUPP;

		}



	if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {

		if (init_attr->qp_type != IB_QPT_RAW_PACKET) {

			mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");

			return -EOPNOTSUPP;

		}

		if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||

		    !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {

			mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");

			return -EOPNOTSUPP;

		}

		qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;

	}



	if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)

		qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;