[Patch v9 09/18] net/mana: configure Tx queues

[longli@linuxonhyperv.com]

From: Long Li <longli@microsoft.com>

Tx hardware queue is allocated when starting the queue, this is for
pre configuration.

Signed-off-by: Long Li <longli@microsoft.com>
---
change log:
v8:
fix coding style to function definitions
v9:
move data definitions from earlier patch.

 drivers/net/mana/mana.c | 67 +++++++++++++++++++++++++++++++++++++++++
 drivers/net/mana/mana.h | 20 ++++++++++++
 2 files changed, 87 insertions(+)

diff --git a/drivers/net/mana/mana.c b/drivers/net/mana/mana.c
index 1c5416fac5..a8a792d5f8 100644
--- a/drivers/net/mana/mana.c
+++ b/drivers/net/mana/mana.c
@@ -205,6 +205,16 @@ mana_dev_info_get(struct rte_eth_dev *dev,
 	return 0;
 }
 
+static void
+mana_dev_tx_queue_info(struct rte_eth_dev *dev, uint16_t queue_id,
+		       struct rte_eth_txq_info *qinfo)
+{
+	struct mana_txq *txq = dev->data->tx_queues[queue_id];
+
+	qinfo->conf.offloads = dev->data->dev_conf.txmode.offloads;
+	qinfo->nb_desc = txq->num_desc;
+}
+
 static void
 mana_dev_rx_queue_info(struct rte_eth_dev *dev, uint16_t queue_id,
 		       struct rte_eth_rxq_info *qinfo)
@@ -293,6 +303,60 @@ mana_rss_hash_conf_get(struct rte_eth_dev *dev,
 	return 0;
 }
 
+static int
+mana_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+			uint16_t nb_desc, unsigned int socket_id,
+			const struct rte_eth_txconf *tx_conf __rte_unused)
+
+{
+	struct mana_priv *priv = dev->data->dev_private;
+	struct mana_txq *txq;
+	int ret;
+
+	txq = rte_zmalloc_socket("mana_txq", sizeof(*txq), 0, socket_id);
+	if (!txq) {
+		DRV_LOG(ERR, "failed to allocate txq");
+		return -ENOMEM;
+	}
+
+	txq->socket = socket_id;
+
+	txq->desc_ring = rte_malloc_socket("mana_tx_desc_ring",
+					   sizeof(struct mana_txq_desc) *
+						nb_desc,
+					   RTE_CACHE_LINE_SIZE, socket_id);
+	if (!txq->desc_ring) {
+		DRV_LOG(ERR, "failed to allocate txq desc_ring");
+		ret = -ENOMEM;
+		goto fail;
+	}
+
+	DRV_LOG(DEBUG, "idx %u nb_desc %u socket %u txq->desc_ring %p",
+		queue_idx, nb_desc, socket_id, txq->desc_ring);
+
+	txq->desc_ring_head = 0;
+	txq->desc_ring_tail = 0;
+	txq->priv = priv;
+	txq->num_desc = nb_desc;
+	dev->data->tx_queues[queue_idx] = txq;
+
+	return 0;
+
+fail:
+	rte_free(txq->desc_ring);
+	rte_free(txq);
+	return ret;
+}
+
+static void
+mana_dev_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid)
+{
+	struct mana_txq *txq = dev->data->tx_queues[qid];
+
+	rte_free(txq->desc_ring);
+	rte_free(txq);
+}
+
 static int
 mana_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 			uint16_t nb_desc, unsigned int socket_id,
@@ -371,10 +435,13 @@ static const struct eth_dev_ops mana_dev_ops = {
 	.dev_configure		= mana_dev_configure,
 	.dev_close		= mana_dev_close,
 	.dev_infos_get		= mana_dev_info_get,
+	.txq_info_get		= mana_dev_tx_queue_info,
 	.rxq_info_get		= mana_dev_rx_queue_info,
 	.dev_supported_ptypes_get = mana_supported_ptypes,
 	.rss_hash_update	= mana_rss_hash_update,
 	.rss_hash_conf_get	= mana_rss_hash_conf_get,
+	.tx_queue_setup		= mana_dev_tx_queue_setup,
+	.tx_queue_release	= mana_dev_tx_queue_release,
 	.rx_queue_setup		= mana_dev_rx_queue_setup,
 	.rx_queue_release	= mana_dev_rx_queue_release,
 	.link_update		= mana_dev_link_update,
diff --git a/drivers/net/mana/mana.h b/drivers/net/mana/mana.h
index a436d6cfc9..817ac75f69 100644
--- a/drivers/net/mana/mana.h
+++ b/drivers/net/mana/mana.h
@@ -80,11 +80,31 @@ struct mana_priv {
 	uint64_t max_mr_size;
 };
 
+struct mana_txq_desc {
+	struct rte_mbuf *pkt;
+	uint32_t wqe_size_in_bu;
+};
+
 struct mana_rxq_desc {
 	struct rte_mbuf *pkt;
 	uint32_t wqe_size_in_bu;
 };
 
+struct mana_txq {
+	struct mana_priv *priv;
+	uint32_t num_desc;
+
+	/* For storing pending requests */
+	struct mana_txq_desc *desc_ring;
+
+	/* desc_ring_head is where we put pending requests to ring,
+	 * completion pull off desc_ring_tail
+	 */
+	uint32_t desc_ring_head, desc_ring_tail;
+
+	unsigned int socket;
+};
+
 struct mana_rxq {
 	struct mana_priv *priv;
 	uint32_t num_desc;
-- 
2.17.1