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path: root/drivers/net/ethernet/mellanox/mlx4/qp.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/qp.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/qp.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 168823dde79f..d1cd9c32a9ae 100644
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -167,6 +167,12 @@ static int __mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
}
+ if ((cur_state == MLX4_QP_STATE_RTR) &&
+ (new_state == MLX4_QP_STATE_RTS) &&
+ dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
+ context->roce_entropy =
+ cpu_to_be16(mlx4_qp_roce_entropy(dev, qp->qpn));
+
*(__be32 *) mailbox->buf = cpu_to_be32(optpar);
memcpy(mailbox->buf + 8, context, sizeof *context);
@@ -921,3 +927,23 @@ int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_qp_to_ready);
+
+u16 mlx4_qp_roce_entropy(struct mlx4_dev *dev, u32 qpn)
+{
+ struct mlx4_qp_context context;
+ struct mlx4_qp qp;
+ int err;
+
+ qp.qpn = qpn;
+ err = mlx4_qp_query(dev, &qp, &context);
+ if (!err) {
+ u32 dest_qpn = be32_to_cpu(context.remote_qpn) & 0xffffff;
+ u16 folded_dst = folded_qp(dest_qpn);
+ u16 folded_src = folded_qp(qpn);
+
+ return (dest_qpn != qpn) ?
+ ((folded_dst ^ folded_src) | 0xC000) :
+ folded_src | 0xC000;
+ }
+ return 0xdead;
+}