netdev - [PATCH net-next 5/7] ionic: block actions during fw reset

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Date:   Thu, 18 Mar 2021 17:48:08 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org
Cc:     drivers@...sando.io, Shannon Nelson <snelson@...sando.io>
Subject: [PATCH net-next 5/7] ionic: block actions during fw reset

Block some actions while the FW is in a reset activity
and the queues are not configured.

Signed-off-by: Shannon Nelson <snelson@...sando.io>
---
 drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c | 4 ++++
 drivers/net/ethernet/pensando/ionic/ionic_dev.c     | 8 +++++---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c     | 7 ++++++-
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
index b0d8499d373b..e4a5416adc80 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
@@ -184,6 +184,10 @@ static int ionic_sriov_configure(struct pci_dev *pdev, int num_vfs)
 	struct device *dev = ionic->dev;
 	int ret = 0;
 
+	if (ionic->lif &&
+	    test_bit(IONIC_LIF_F_FW_RESET, ionic->lif->state))
+		return -EBUSY;
+
 	if (num_vfs > 0) {
 		ret = pci_enable_sriov(pdev, num_vfs);
 		if (ret) {
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index b951bf5bbdc4..0532f7cf086d 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -14,18 +14,20 @@
 static void ionic_watchdog_cb(struct timer_list *t)
 {
 	struct ionic *ionic = from_timer(ionic, t, watchdog_timer);
+	struct ionic_lif *lif = ionic->lif;
 	int hb;
 
 	mod_timer(&ionic->watchdog_timer,
 		  round_jiffies(jiffies + ionic->watchdog_period));
 
-	if (!ionic->lif)
+	if (!lif)
 		return;
 
 	hb = ionic_heartbeat_check(ionic);
 
-	if (hb >= 0)
-		ionic_link_status_check_request(ionic->lif, CAN_NOT_SLEEP);
+	if (hb >= 0 &&
+	    !test_bit(IONIC_LIF_F_FW_RESET, lif->state))
+		ionic_link_status_check_request(lif, CAN_NOT_SLEEP);
 }
 
 void ionic_init_devinfo(struct ionic *ionic)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 18fcba4fc413..4f4ca183830b 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -1477,7 +1477,8 @@ static void ionic_tx_timeout_work(struct work_struct *ws)
 {
 	struct ionic_lif *lif = container_of(ws, struct ionic_lif, tx_timeout_work);
 
-	netdev_info(lif->netdev, "Tx Timeout recovery\n");
+	if (test_bit(IONIC_LIF_F_FW_RESET, lif->state))
+		return;
 
 	/* if we were stopped before this scheduled job was launched,
 	 * don't bother the queues as they are already stopped.
@@ -1493,6 +1494,7 @@ static void ionic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 
+	netdev_info(lif->netdev, "Tx Timeout triggered - txq %d\n", txqueue);
 	schedule_work(&lif->tx_timeout_work);
 }
 
@@ -1834,6 +1836,9 @@ static int ionic_start_queues(struct ionic_lif *lif)
 {
 	int err;
 
+	if (test_bit(IONIC_LIF_F_FW_RESET, lif->state))
+		return -EBUSY;
+
 	if (test_and_set_bit(IONIC_LIF_F_UP, lif->state))
 		return 0;
 
-- 
2.17.1