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IB/mlx5: Support creation of a WQ with scatter FCS offload

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

Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Noa Osherovich 2017-01-18 15:40:04 +02:00 committed by Doug Ledford
parent e4cc4fa7cc
commit 4be6da1e5b
1 changed files with 11 additions and 2 deletions
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13
drivers/infiniband/hw/mlx5/qp.c
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@ -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);