netdev - [PATCH net 2/2] ice: Fix interface being down after reset with link-down-on-close flag on

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Message-Id: <20220920205344.1860934-3-anthony.l.nguyen@intel.com>
Date:   Tue, 20 Sep 2022 13:53:44 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Mateusz Palczewski <mateusz.palczewski@...el.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        Petr Oros <poros@...hat.com>,
        Gurucharan <gurucharanx.g@...el.com>
Subject: [PATCH net 2/2] ice: Fix interface being down after reset with link-down-on-close flag on

From: Mateusz Palczewski <mateusz.palczewski@...el.com>

When performing a reset on ice driver with link-down-on-close flag on
interface would always stay down. Fix this by moving a check of this
flag to ice_stop() that is called only when user wants to bring
interface down.

Fixes: ab4ab73fc1ec ("ice: Add ethtool private flag to make forcing link down optional")
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@...el.com>
Tested-by: Petr Oros <poros@...hat.com>
Tested-by: Gurucharan <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 3042a76b848d..e109cb93886b 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6649,7 +6649,7 @@ static void ice_napi_disable_all(struct ice_vsi *vsi)
  */
 int ice_down(struct ice_vsi *vsi)
 {
-	int i, tx_err, rx_err, link_err = 0, vlan_err = 0;
+	int i, tx_err, rx_err, vlan_err = 0;
 
 	WARN_ON(!test_bit(ICE_VSI_DOWN, vsi->state));
 
@@ -6683,20 +6683,13 @@ int ice_down(struct ice_vsi *vsi)
 
 	ice_napi_disable_all(vsi);
 
-	if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
-		link_err = ice_force_phys_link_state(vsi, false);
-		if (link_err)
-			netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
-				   vsi->vsi_num, link_err);
-	}
-
 	ice_for_each_txq(vsi, i)
 		ice_clean_tx_ring(vsi->tx_rings[i]);
 
 	ice_for_each_rxq(vsi, i)
 		ice_clean_rx_ring(vsi->rx_rings[i]);
 
-	if (tx_err || rx_err || link_err || vlan_err) {
+	if (tx_err || rx_err || vlan_err) {
 		netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n",
 			   vsi->vsi_num, vsi->vsw->sw_id);
 		return -EIO;
@@ -8892,6 +8885,16 @@ int ice_stop(struct net_device *netdev)
 		return -EBUSY;
 	}
 
+	if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
+		int link_err = ice_force_phys_link_state(vsi, false);
+
+		if (link_err) {
+			netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
+				   vsi->vsi_num, link_err);
+			return -EIO;
+		}
+	}
+
 	ice_vsi_close(vsi);
 
 	return 0;
-- 
2.35.1