netdev - [PATCH v3 net-next 3/4] ionic: pull out common bits from fw

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Date: Mon, 17 Jul 2023 10:00:00 -0700
From: Shannon Nelson <shannon.nelson@....com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>,
	<idosch@...sch.org>
CC: <brett.creeley@....com>, <drivers@...sando.io>, Shannon Nelson
	<shannon.nelson@....com>
Subject: [PATCH v3  net-next 3/4] ionic: pull out common bits from fw_up

Pull out some code from ionic_lif_handle_fw_up() that can be
used in the coming FLR recovery patch.

Signed-off-by: Shannon Nelson <shannon.nelson@....com>
---
 .../net/ethernet/pensando/ionic/ionic_lif.c   | 66 ++++++++++++-------
 1 file changed, 43 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 612b0015dc43..94b14ea6ffee 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -3266,27 +3266,11 @@ static void ionic_lif_handle_fw_down(struct ionic_lif *lif)
 	dev_info(ionic->dev, "FW Down: LIFs stopped\n");
 }
 
-static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
+static int ionic_restart_lif(struct ionic_lif *lif)
 {
 	struct ionic *ionic = lif->ionic;
 	int err;
 
-	if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state))
-		return;
-
-	dev_info(ionic->dev, "FW Up: restarting LIFs\n");
-
-	ionic_init_devinfo(ionic);
-	err = ionic_identify(ionic);
-	if (err)
-		goto err_out;
-	err = ionic_port_identify(ionic);
-	if (err)
-		goto err_out;
-	err = ionic_port_init(ionic);
-	if (err)
-		goto err_out;
-
 	mutex_lock(&lif->queue_lock);
 
 	if (test_and_clear_bit(IONIC_LIF_F_BROKEN, lif->state))
@@ -3317,17 +3301,13 @@ static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
 			goto err_txrx_free;
 	}
 
+	clear_bit(IONIC_LIF_F_FW_RESET, lif->state);
 	mutex_unlock(&lif->queue_lock);
 
-	clear_bit(IONIC_LIF_F_FW_RESET, lif->state);
 	ionic_link_status_check_request(lif, CAN_SLEEP);
 	netif_device_attach(lif->netdev);
-	dev_info(ionic->dev, "FW Up: LIFs restarted\n");
 
-	/* restore the hardware timestamping queues */
-	ionic_lif_hwstamp_replay(lif);
-
-	return;
+	return 0;
 
 err_txrx_free:
 	ionic_txrx_free(lif);
@@ -3337,6 +3317,46 @@ static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
 	ionic_qcqs_free(lif);
 err_unlock:
 	mutex_unlock(&lif->queue_lock);
+
+	return err;
+}
+
+static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
+{
+	struct ionic *ionic = lif->ionic;
+	int err;
+
+	if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state))
+		return;
+
+	dev_info(ionic->dev, "FW Up: restarting LIFs\n");
+
+	/* This is a little different from what happens at
+	 * probe time because the LIF already exists so we
+	 * just need to reanimate it.
+	 */
+	ionic_init_devinfo(ionic);
+	err = ionic_identify(ionic);
+	if (err)
+		goto err_out;
+	err = ionic_port_identify(ionic);
+	if (err)
+		goto err_out;
+	err = ionic_port_init(ionic);
+	if (err)
+		goto err_out;
+
+	err = ionic_restart_lif(lif);
+	if (err)
+		goto err_out;
+
+	dev_info(ionic->dev, "FW Up: LIFs restarted\n");
+
+	/* restore the hardware timestamping queues */
+	ionic_lif_hwstamp_replay(lif);
+
+	return;
+
 err_out:
 	dev_err(ionic->dev, "FW Up: LIFs restart failed - err %d\n", err);
 }
-- 
2.17.1