[PATCH v2 net-next 3/8] ionic: add lif quiesce

[Shannon Nelson <snelson@pensando.io>]

After the queues are stopped, expressly quiesce the lif.
This assures that even if the queues were in an odd state,
the firmware will close up everything cleanly.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
---
 .../net/ethernet/pensando/ionic/ionic_lif.c   | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 519d544821af..990bd9ce93c2 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -1625,6 +1625,28 @@ static void ionic_lif_rss_deinit(struct ionic_lif *lif)
 	ionic_lif_rss_config(lif, 0x0, NULL, NULL);
 }
 
+static int ionic_lif_quiesce(struct ionic_lif *lif)
+{
+	struct ionic_admin_ctx ctx = {
+		.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work),
+		.cmd.lif_setattr = {
+			.opcode = IONIC_CMD_LIF_SETATTR,
+			.index = cpu_to_le16(lif->index),
+			.attr = IONIC_LIF_ATTR_STATE,
+			.state = IONIC_LIF_QUIESCE,
+		},
+	};
+	int err;
+
+	err = ionic_adminq_post_wait(lif, &ctx);
+	if (err) {
+		netdev_err(lif->netdev, "lif quiesce failed %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
 static void ionic_txrx_disable(struct ionic_lif *lif)
 {
 	unsigned int i;
@@ -1639,6 +1661,8 @@ static void ionic_txrx_disable(struct ionic_lif *lif)
 		for (i = 0; i < lif->nxqs; i++)
 			err = ionic_qcq_disable(lif->rxqcqs[i], (err != -ETIMEDOUT));
 	}
+
+	(void)ionic_lif_quiesce(lif);
 }
 
 static void ionic_txrx_deinit(struct ionic_lif *lif)
-- 
2.17.1