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

[Shannon Nelson]

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 <snel...@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