diff mbox series

[v8,16/18] net/mana: add function to start/stop device

Message ID 1662674396-30898-1-git-send-email-longli@linuxonhyperv.com (mailing list archive)
State Changes Requested, archived
Delegated to: Ferruh Yigit
Headers
Series Introduce Microsoft Azure Network Adatper (MANA) PMD |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Long Li Sept. 8, 2022, 9:59 p.m. UTC 
  From: Long Li <longli@microsoft.com>

Add support for starting/stopping the device.

Signed-off-by: Long Li <longli@microsoft.com>
---
Change log:
v2:
Use spinlock for memory registration cache.
Add prefix mana_ to all function names.
v6:
Roll back device state on error in mana_dev_start()

 drivers/net/mana/mana.c | 77 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/mana/mana.c b/drivers/net/mana/mana.c
index 92692037b1..63937410b8 100644
--- a/drivers/net/mana/mana.c
+++ b/drivers/net/mana/mana.c
@@ -105,6 +105,81 @@  mana_dev_configure(struct rte_eth_dev *dev)
 
 static int mana_intr_uninstall(struct mana_priv *priv);
 
+static int
+mana_dev_start(struct rte_eth_dev *dev)
+{
+	int ret;
+	struct mana_priv *priv = dev->data->dev_private;
+
+	rte_spinlock_init(&priv->mr_btree_lock);
+	ret = mana_mr_btree_init(&priv->mr_btree, MANA_MR_BTREE_CACHE_N,
+				 dev->device->numa_node);
+	if (ret) {
+		DRV_LOG(ERR, "Failed to init device MR btree %d", ret);
+		return ret;
+	}
+
+	ret = mana_start_tx_queues(dev);
+	if (ret) {
+		DRV_LOG(ERR, "failed to start tx queues %d", ret);
+		goto failed_tx;
+	}
+
+	ret = mana_start_rx_queues(dev);
+	if (ret) {
+		DRV_LOG(ERR, "failed to start rx queues %d", ret);
+		goto failed_rx;
+	}
+
+	rte_wmb();
+
+	dev->tx_pkt_burst = mana_tx_burst;
+	dev->rx_pkt_burst = mana_rx_burst;
+
+	DRV_LOG(INFO, "TX/RX queues have started");
+
+	/* Enable datapath for secondary processes */
+	mana_mp_req_on_rxtx(dev, MANA_MP_REQ_START_RXTX);
+
+	return 0;
+
+failed_rx:
+	mana_stop_tx_queues(dev);
+
+failed_tx:
+	mana_mr_btree_free(&priv->mr_btree);
+
+	return ret;
+}
+
+static int
+mana_dev_stop(struct rte_eth_dev *dev __rte_unused)
+{
+	int ret;
+
+	dev->tx_pkt_burst = mana_tx_burst_removed;
+	dev->rx_pkt_burst = mana_rx_burst_removed;
+
+	/* Stop datapath on secondary processes */
+	mana_mp_req_on_rxtx(dev, MANA_MP_REQ_STOP_RXTX);
+
+	rte_wmb();
+
+	ret = mana_stop_tx_queues(dev);
+	if (ret) {
+		DRV_LOG(ERR, "failed to stop tx queues");
+		return ret;
+	}
+
+	ret = mana_stop_rx_queues(dev);
+	if (ret) {
+		DRV_LOG(ERR, "failed to stop tx queues");
+		return ret;
+	}
+
+	return 0;
+}
+
 static int
 mana_dev_close(struct rte_eth_dev *dev)
 {
@@ -452,6 +527,8 @@  mana_dev_link_update(struct rte_eth_dev *dev,
 
 static const struct eth_dev_ops mana_dev_ops = {
 	.dev_configure		= mana_dev_configure,
+	.dev_start		= mana_dev_start,
+	.dev_stop		= mana_dev_stop,
 	.dev_close		= mana_dev_close,
 	.dev_infos_get		= mana_dev_info_get,
 	.txq_info_get		= mana_dev_tx_queue_info,