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From: David Awogbemila <awogbemila@google.com>
To: netdev@vger.kernel.org
Cc: Patricio Noyola <patricion@google.com>,
	Yangchun Fu <yangchun@google.com>,
	David Awogbemila <awogbemila@google.com>
Subject: [PATCH net-next 07/18] gve: Use link status register to report link status
Date: Tue, 18 Aug 2020 12:44:06 -0700	[thread overview]
Message-ID: <20200818194417.2003932-8-awogbemila@google.com> (raw)
In-Reply-To: <20200818194417.2003932-1-awogbemila@google.com>

From: Patricio Noyola <patricion@google.com>

This makes the driver better aware of the connectivity status of the
device. Based on the device's status register, the driver can call
netif_carrier_{on,off}.

Reviewed-by: Yangchun Fu <yangchun@google.com>
Signed-off-by: Patricio Noyola <patricion@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
---
 drivers/net/ethernet/google/gve/gve_main.c | 23 +++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 885943d745aa..685f18697fc1 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -769,7 +769,7 @@ static int gve_open(struct net_device *dev)
 	gve_set_device_rings_ok(priv);
 
 	gve_turnup(priv);
-	netif_carrier_on(dev);
+	queue_work(priv->gve_wq, &priv->service_task);
 	priv->interface_up_cnt++;
 	return 0;
 
@@ -1026,16 +1026,33 @@ void gve_handle_report_stats(struct gve_priv *priv)
 	}
 }
 
+static void gve_handle_link_status(struct gve_priv *priv, bool link_status)
+{
+	if (!gve_get_napi_enabled(priv))
+		return;
+
+	if (link_status == netif_carrier_ok(priv->dev))
+		return;
+
+	if (link_status) {
+		netif_carrier_on(priv->dev);
+	} else {
+		dev_info(&priv->pdev->dev, "Device link is down.\n");
+		netif_carrier_off(priv->dev);
+	}
+}
+
 /* Handle NIC status register changes, reset requests and report stats */
 static void gve_service_task(struct work_struct *work)
 {
 	struct gve_priv *priv = container_of(work, struct gve_priv,
 					     service_task);
+	u32 status = ioread32be(&priv->reg_bar0->device_status);
 
-	gve_handle_status(priv,
-			  ioread32be(&priv->reg_bar0->device_status));
+	gve_handle_status(priv, status);
 
 	gve_handle_reset(priv);
+	gve_handle_link_status(priv, GVE_DEVICE_STATUS_LINK_STATUS_MASK & status);
 	if (gve_get_do_report_stats(priv)) {
 		gve_handle_report_stats(priv);
 		gve_clear_do_report_stats(priv);
-- 
2.28.0.220.ged08abb693-goog


  parent reply	other threads:[~2020-08-18 19:44 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 19:43 [PATCH net-next 00/18] GVE Driver v1.1.0 Features David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 01/18] gve: Get and set Rx copybreak via ethtool David Awogbemila
2020-08-18 20:00   ` Andrew Lunn
2020-08-18 19:44 ` [PATCH net-next 02/18] gve: Add stats for gve David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 03/18] gve: Register netdev earlier David Awogbemila
2020-08-18 20:09   ` Andrew Lunn
2020-08-18 19:44 ` [PATCH net-next 04/18] gve: Add support for dma_mask register David Awogbemila
2020-08-18 20:15   ` Andrew Lunn
2020-08-18 19:44 ` [PATCH net-next 05/18] gve: Add Gvnic stats AQ command and ethtool show/set-priv-flags David Awogbemila
2020-08-19  3:13   ` Jakub Kicinski
2020-08-25 15:46     ` David Awogbemila
2020-08-25 16:46       ` Jakub Kicinski
2020-08-26  0:06         ` David Awogbemila
2020-08-26  0:53           ` Jakub Kicinski
2020-08-27 19:24             ` David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 06/18] gve: Batch AQ commands for creating and destroying queues David Awogbemila
2020-08-18 20:16   ` David Miller
2020-08-18 22:25     ` David Awogbemila
2020-08-18 19:44 ` David Awogbemila [this message]
2020-08-19  3:36   ` [PATCH net-next 07/18] gve: Use link status register to report link status Jakub Kicinski
2020-08-25 15:46     ` David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 08/18] gve: Enable Link Speed Reporting in the driver David Awogbemila
2020-08-18 21:30   ` Jakub Kicinski
2020-08-18 19:44 ` [PATCH net-next 09/18] gve: Add support for raw addressing device option David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 10/18] gve: Add support for raw addressing to the rx path David Awogbemila
2020-08-18 20:18   ` David Miller
2020-08-18 22:25     ` David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 11/18] gve: Add support for raw addressing in the tx path David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 12/18] gve: Add netif_set_xps_queue call David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 13/18] gve: Add rx buffer pagecnt bias David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 14/18] gve: Move the irq db indexes out of the ntfy block struct David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 15/18] gve: Prefetch packet pages and packet descriptors David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 16/18] gve: Also WARN for skb index equals num_queues David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 17/18] gve: Switch to use napi_complete_done David Awogbemila
2020-08-18 19:44 ` [PATCH net-next 18/18] gve: Bump version to 1.1.0 David Awogbemila
2020-08-19  3:40   ` Jakub Kicinski
2020-08-18 20:19 ` [PATCH net-next 00/18] GVE Driver v1.1.0 Features David Miller
2020-08-18 22:24   ` David Awogbemila

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