From: Majd Dibbiny <majd@xxxxxxxxxxxx>
Enable Scatter FCS in the RQ context when the user passes
Scatter FCS create flag.
Signed-off-by: Majd Dibbiny <majd@xxxxxxxxxxxx>
Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/mlx5_ib.h | 1 +
drivers/infiniband/hw/mlx5/qp.c | 20 +++++++++++++++++++-
2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index f16c818..ac23780 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -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 {
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 8dee8bc..5041176 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -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;
--
2.5.0
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