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Commit 4be6da1e authored by Noa Osherovich's avatar Noa Osherovich Committed by Doug Ledford
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IB/mlx5: Support creation of a WQ with scatter FCS offload 



Add support for creation of a WQ with scatter FCS capability, if
this capability is supported by the hardware.

Signed-off-by: default avatarNoa Osherovich <noaos@mellanox.com>
Reviewed-by: default avatarMajd Dibbiny <majd@mellanox.com>
Reviewed-by: default avatarYishai Hadas <yishaih@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent e4cc4fa7

drivers/infiniband/hw/mlx5/qp.c

+11 −2
Original line number Diff line number Diff line
@@ -4604,6 +4604,7 @@ static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd, 
		      struct ib_wq_init_attr *init_attr)

{

	struct mlx5_ib_dev *dev;

	int has_net_offloads;

	__be64 *rq_pas0;

	void *in;

	void *rqc;
@@ -4635,9 +4636,9 @@ static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd, 
	MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);

	MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);

	MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);

	has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);

	if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {

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

		      MLX5_CAP_ETH(dev->mdev, vlan_cap))) {

		if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {

			mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");

			err = -EOPNOTSUPP;

			goto out;
@@ -4645,6 +4646,14 @@ static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd, 
	} else {

		MLX5_SET(rqc, rqc, vsd, 1);

	}

	if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {

		if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {

			mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");

			err = -EOPNOTSUPP;

			goto out;

		}

		MLX5_SET(rqc, rqc, scatter_fcs, 1);

	}

	rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);

	mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);

	err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);