[PATCH v2 10/13] net/ionic: fix device close sequence to avoid crash

[Andrew Boyer <andrew.boyer@amd.com>]

The close routine should release all resources, but not
call rte_eth_dev_destroy(). As written this code will call
rte_eth_dev_release_port() twice and segfault.

Instead, move rte_eth_dev_destroy() to the remove routine.
eth_ionic_dev_uninit() will call close if necessary.

Fixes: 175e4e7ed760 ("net/ionic: complete release on close")
Cc: stable@dpdk.org

Signed-off-by: Andrew Boyer <andrew.boyer@amd.com>
---
 drivers/net/ionic/ionic_ethdev.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ionic/ionic_ethdev.c b/drivers/net/ionic/ionic_ethdev.c
index 7c55a26956..bedcf958e2 100644
--- a/drivers/net/ionic/ionic_ethdev.c
+++ b/drivers/net/ionic/ionic_ethdev.c
@@ -1009,19 +1009,21 @@ ionic_dev_close(struct rte_eth_dev *eth_dev)
 
 	ionic_lif_stop(lif);
 
-	ionic_lif_free_queues(lif);
-
 	IONIC_PRINT(NOTICE, "Removing device %s", eth_dev->device->name);
 	if (adapter->intf->unconfigure_intr)
 		(*adapter->intf->unconfigure_intr)(adapter);
 
-	rte_eth_dev_destroy(eth_dev, eth_ionic_dev_uninit);
-
 	ionic_port_reset(adapter);
 	ionic_reset(adapter);
+
+	ionic_lif_free_queues(lif);
+	ionic_lif_deinit(lif);
+	ionic_lif_free(lif); /* Does not free LIF object */
+
 	if (adapter->intf->unmap_bars)
 		(*adapter->intf->unmap_bars)(adapter);
 
+	lif->adapter = NULL;
 	rte_free(adapter);
 
 	return 0;
@@ -1098,21 +1100,18 @@ eth_ionic_dev_init(struct rte_eth_dev *eth_dev, void *init_params)
 static int
 eth_ionic_dev_uninit(struct rte_eth_dev *eth_dev)
 {
-	struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
-	struct ionic_adapter *adapter = lif->adapter;
-
 	IONIC_PRINT_CALL();
 
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return 0;
 
-	adapter->lif = NULL;
-
-	ionic_lif_deinit(lif);
-	ionic_lif_free(lif);
+	if (eth_dev->state != RTE_ETH_DEV_UNUSED)
+		ionic_dev_close(eth_dev);
 
-	if (!(lif->state & IONIC_LIF_F_FW_RESET))
-		ionic_lif_reset(lif);
+	eth_dev->dev_ops = NULL;
+	eth_dev->rx_pkt_burst = NULL;
+	eth_dev->tx_pkt_burst = NULL;
+	eth_dev->tx_pkt_prepare = NULL;
 
 	return 0;
 }
@@ -1267,17 +1266,18 @@ eth_ionic_dev_remove(struct rte_device *rte_dev)
 {
 	char name[RTE_ETH_NAME_MAX_LEN];
 	struct rte_eth_dev *eth_dev;
+	int ret = 0;
 
 	/* Adapter lookup is using the eth_dev name */
 	snprintf(name, sizeof(name), "%s_lif", rte_dev->name);
 
 	eth_dev = rte_eth_dev_allocated(name);
 	if (eth_dev)
-		ionic_dev_close(eth_dev);
+		ret = rte_eth_dev_destroy(eth_dev, eth_ionic_dev_uninit);
 	else
 		IONIC_PRINT(DEBUG, "Cannot find device %s", rte_dev->name);
 
-	return 0;
+	return ret;
 }
 
 RTE_LOG_REGISTER_DEFAULT(ionic_logtype, NOTICE);
-- 
2.17.1