[dpdk-dev] [PATCH v3 10/17] net/mlx5: prepare Tx queue structures to support timestamp

[Viacheslav Ovsiienko <viacheslavo@mellanox.com>]

The fields to support send scheduling on dynamic timestamp
field are introduced and initialized on device start.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/mlx5/mlx5_rxtx.h    |  4 ++++
 drivers/net/mlx5/mlx5_trigger.c |  2 ++
 drivers/net/mlx5/mlx5_txq.c     | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 38 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 8a8d2b5..974a847 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -313,6 +313,9 @@ struct mlx5_txq_data {
 	volatile uint32_t *cq_db; /* Completion queue doorbell. */
 	uint16_t port_id; /* Port ID of device. */
 	uint16_t idx; /* Queue index. */
+	uint64_t ts_mask; /* Timestamp flag dynamic mask. */
+	int32_t ts_offset; /* Timestamp field dynamic offset. */
+	struct mlx5_dev_ctx_shared *sh; /* Shared context. */
 	struct mlx5_txq_stats stats; /* TX queue counters. */
 #ifndef RTE_ARCH_64
 	rte_spinlock_t *uar_lock;
@@ -468,6 +471,7 @@ struct mlx5_txq_ctrl *mlx5_txq_hairpin_new
 void txq_alloc_elts(struct mlx5_txq_ctrl *txq_ctrl);
 void txq_free_elts(struct mlx5_txq_ctrl *txq_ctrl);
 uint64_t mlx5_get_tx_port_offloads(struct rte_eth_dev *dev);
+void mlx5_txq_dynf_timestamp_set(struct rte_eth_dev *dev);
 
 /* mlx5_rxtx.c */
 
diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
index e324319..29aef54 100644
--- a/drivers/net/mlx5/mlx5_trigger.c
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -331,6 +331,8 @@
 	}
 	/* Set a mask and offset of dynamic metadata flows into Rx queues*/
 	mlx5_flow_rxq_dynf_metadata_set(dev);
+	/* Set a mask and offset of scheduling on timestamp into Tx queues*/
+	mlx5_txq_dynf_timestamp_set(dev);
 	/*
 	 * In non-cached mode, it only needs to start the default mreg copy
 	 * action and no flow created by application exists anymore.
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index f9ed504..7f6a40a 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -1785,3 +1785,35 @@ struct mlx5_txq_ctrl *
 	}
 	return ret;
 }
+
+/**
+ * Set the Tx queue dynamic timestamp (mask and offset)
+ *
+ * @param[in] dev
+ *   Pointer to the Ethernet device structure.
+ */
+void
+mlx5_txq_dynf_timestamp_set(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_dev_ctx_shared *sh = priv->sh;
+	struct mlx5_txq_data *data;
+	int off, nbit;
+	unsigned int i;
+	uint64_t mask = 0;
+
+	nbit = rte_mbuf_dynflag_lookup
+				(RTE_MBUF_DYNFLAG_TX_TIMESTAMP_NAME, NULL);
+	off = rte_mbuf_dynfield_lookup
+				(RTE_MBUF_DYNFIELD_TIMESTAMP_NAME, NULL);
+	if (nbit > 0 && off >= 0 && sh->txpp.refcnt)
+		mask = 1ULL << nbit;
+	for (i = 0; i != priv->txqs_n; ++i) {
+		data = (*priv->txqs)[i];
+		if (!data)
+			continue;
+		data->sh = sh;
+		data->ts_mask = mask;
+		data->ts_offset = off;
+	}
+}
-- 
1.8.3.1