[dpdk-dev] [PATCH] net/kni: remove resources when port is closed

[Ferruh Yigit <ferruh.yigit@intel.com>]

Add .dev_close to clean resources on device close,
also set RTE_ETH_DEV_CLOSE_REMOVE device flag to cause all ethdev
resources removed on 'rte_eth_dev_close()' call.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 drivers/net/kni/rte_eth_kni.c | 38 +++++++++++++++++++++++------------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/net/kni/rte_eth_kni.c b/drivers/net/kni/rte_eth_kni.c
index 9e0c6bd2f..d12b49aaf 100644
--- a/drivers/net/kni/rte_eth_kni.c
+++ b/drivers/net/kni/rte_eth_kni.c
@@ -197,6 +197,24 @@ eth_kni_dev_stop(struct rte_eth_dev *dev)
 	dev->data->dev_link.link_status = 0;
 }
 
+static void
+eth_kni_close(struct rte_eth_dev *eth_dev)
+{
+	struct pmd_internals *internals;
+	int ret;
+
+	eth_kni_dev_stop(eth_dev);
+
+	/* mac_addrs must not be freed alone because part of dev_private */
+	eth_dev->data->mac_addrs = NULL;
+
+	internals = eth_dev->data->dev_private;
+	ret = rte_kni_release(internals->kni);
+	if (ret)
+		PMD_LOG(WARNING, "Not able to release kni for %s",
+			eth_dev->data->name);
+}
+
 static int
 eth_kni_dev_configure(struct rte_eth_dev *dev __rte_unused)
 {
@@ -327,6 +345,7 @@ eth_kni_stats_reset(struct rte_eth_dev *dev)
 static const struct eth_dev_ops eth_kni_ops = {
 	.dev_start = eth_kni_dev_start,
 	.dev_stop = eth_kni_dev_stop,
+	.dev_close = eth_kni_close,
 	.dev_configure = eth_kni_dev_configure,
 	.dev_infos_get = eth_kni_dev_info,
 	.rx_queue_setup = eth_kni_rx_queue_setup,
@@ -362,6 +381,8 @@ eth_kni_create(struct rte_vdev_device *vdev,
 	data->dev_link = pmd_link;
 	data->mac_addrs = &internals->eth_addr;
 
+	data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
+
 	rte_eth_random_addr(internals->eth_addr.addr_bytes);
 
 	eth_dev->dev_ops = &eth_kni_ops;
@@ -456,9 +477,7 @@ static int
 eth_kni_remove(struct rte_vdev_device *vdev)
 {
 	struct rte_eth_dev *eth_dev;
-	struct pmd_internals *internals;
 	const char *name;
-	int ret;
 
 	name = rte_vdev_device_name(vdev);
 	PMD_LOG(INFO, "Un-Initializing eth_kni for %s", name);
@@ -468,19 +487,12 @@ eth_kni_remove(struct rte_vdev_device *vdev)
 	if (eth_dev == NULL)
 		return -1;
 
-	/* mac_addrs must not be freed alone because part of dev_private */
-	eth_dev->data->mac_addrs = NULL;
-
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
+		eth_kni_dev_stop(eth_dev);
 		return rte_eth_dev_release_port(eth_dev);
+	}
 
-	eth_kni_dev_stop(eth_dev);
-
-	internals = eth_dev->data->dev_private;
-	ret = rte_kni_release(internals->kni);
-	if (ret)
-		PMD_LOG(WARNING, "Not able to release kni for %s", name);
-
+	eth_kni_close(eth_dev);
 	rte_eth_dev_release_port(eth_dev);
 
 	is_kni_initialized--;
-- 
2.21.0