diff mbox series

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

Message ID 20201106001220.68130-4-snelson@pensando.io (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series ionic updates | expand

Commit Message

Shannon Nelson Nov. 6, 2020, 12:12 a.m. UTC
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(+)

Comments

Saeed Mahameed Nov. 6, 2020, 9:07 p.m. UTC | #1
On Thu, 2020-11-05 at 16:12 -0800, Shannon Nelson wrote:
> 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)
Sorry maybe i wasn't clear before, 

i mean make this function return a void

static void ionic_lif_quiesce(struct ionic_lif *lif)

> +	(void)ionic_lif_quiesce(lif);

I didn't mean to typecast the return value here :)
diff mbox series

Patch

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)