[dpdk-dev] [PATCH v2 08/28] net/mlx5: update Tx queue create for LRO

[Matan Azrad <matan@mellanox.com>]

From: Dekel Peled <dekelp@mellanox.com>

Update function mlx5_txq_ibv_new(), query and store the TIS
transport domain value.
It is required later on Rx side when creating matching TIR.
Add field in mlx5 data structure to store Transport Domain ID.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/net/mlx5/mlx5.h     |  1 +
 drivers/net/mlx5/mlx5_txq.c | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 5ae99dc..84975ed 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -418,6 +418,7 @@ struct mlx5_ibv_shared {
 	uint32_t max_port; /* Maximal IB device port index. */
 	struct ibv_context *ctx; /* Verbs/DV context. */
 	struct ibv_pd *pd; /* Protection Domain. */
+	uint32_t tdn; /* Transport Domain number. */
 	char ibdev_name[IBV_SYSFS_NAME_MAX]; /* IB device name. */
 	char ibdev_path[IBV_SYSFS_PATH_MAX]; /* IB device path for secondary */
 	struct ibv_device_attr_ex device_attr; /* Device properties. */
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index dbad361..fe3b4ec 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -396,6 +396,11 @@ struct mlx5_txq_ibv *
 	const int desc = 1 << txq_data->elts_n;
 	int ret = 0;
 
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	/* If using DevX, need additional mask to read tisn value. */
+	if (priv->config.devx && !priv->sh->tdn)
+		qp.comp_mask |= MLX5DV_QP_MASK_RAW_QP_HANDLES;
+#endif
 	assert(txq_data);
 	priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_TX_QUEUE;
 	priv->verbs_alloc_ctx.obj = txq_ctrl;
@@ -542,6 +547,27 @@ struct mlx5_txq_ibv *
 	txq_data->wqe_pi = 0;
 	txq_data->wqe_comp = 0;
 	txq_data->wqe_thres = txq_data->wqe_s / MLX5_TX_COMP_THRESH_INLINE_DIV;
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	/*
+	 * If using DevX need to query and store TIS transport domain value.
+	 * This is done once per port.
+	 * Will use this value on Rx, when creating matching TIR.
+	 */
+	if (priv->config.devx && !priv->sh->tdn) {
+		ret = mlx5_devx_cmd_qp_query_tis_td(tmpl.qp, qp.tisn,
+						    &priv->sh->tdn);
+		if (ret) {
+			DRV_LOG(ERR, "Fail to query port %u Tx queue %u QP TIS "
+				"transport domain", dev->data->port_id, idx);
+			rte_errno = EINVAL;
+			goto error;
+		} else {
+			DRV_LOG(DEBUG, "port %u Tx queue %u TIS number %d "
+				"transport domain %d", dev->data->port_id,
+				idx, qp.tisn, priv->sh->tdn);
+		}
+	}
+#endif
 	txq_ibv->qp = tmpl.qp;
 	txq_ibv->cq = tmpl.cq;
 	rte_atomic32_inc(&txq_ibv->refcnt);
-- 
1.8.3.1