[PATCH 08/11] net/ngbe: fix to keep link down after device close

[Jiawen Wu]

When the port is closed, hardware is reset to power on. And
ngbe_dev_stop() is just returned 0 to avoid secondary calls,
so that the link led remains on. Fix this bug by adding to turn
off the PHY power.

Fixes: 3518df5774c7 ("net/ngbe: support device start/stop")
Fixes: 708ebe7d0399 ("net/ngbe: fix external PHY power down")
Cc: stable at dpdk.org

Signed-off-by: Jiawen Wu <jiawenwu at trustnetic.com>
---
 drivers/net/ngbe/ngbe_ethdev.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index e027e71b24..9a594a1db7 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -1167,7 +1167,7 @@ ngbe_dev_stop(struct rte_eth_dev *dev)
 	int vf;
 
 	if (hw->adapter_stopped)
-		return 0;
+		goto out;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -1189,8 +1189,6 @@ ngbe_dev_stop(struct rte_eth_dev *dev)
 	for (vf = 0; vfinfo != NULL && vf < pci_dev->max_vfs; vf++)
 		vfinfo[vf].clear_to_send = false;
 
-	hw->phy.set_phy_power(hw, false);
-
 	ngbe_dev_clear_queues(dev);
 
 	/* Clear stored conf */
@@ -1217,6 +1215,10 @@ ngbe_dev_stop(struct rte_eth_dev *dev)
 	hw->adapter_stopped = true;
 	dev->data->dev_started = 0;
 
+out:
+	/* close phy to prevent reset in dev_close from restarting physical link */
+	hw->phy.set_phy_power(hw, false);
+
 	return 0;
 }
 
-- 
2.27.0