netdev - [net-next PATCH v5 7/9] fbnic: Add handler for reporting link down event statistics

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Message-ID: 
 <176374323824.959489.6915296616773178954.stgit@ahduyck-xeon-server.home.arpa>
Date: Fri, 21 Nov 2025 08:40:38 -0800
From: Alexander Duyck <alexander.duyck@...il.com>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org, kernel-team@...a.com, andrew+netdev@...n.ch,
 hkallweit1@...il.com, linux@...linux.org.uk, pabeni@...hat.com,
 davem@...emloft.net
Subject: [net-next PATCH v5 7/9] fbnic: Add handler for reporting link down
 event statistics

From: Alexander Duyck <alexanderduyck@...com>

We were previously not displaying the number of link_down_events tracked by
the device. With this change we should now be able to display the value.
The value itself tracks the calls from the phylink interface to the
mac_link_down call.

Signed-off-by: Alexander Duyck <alexanderduyck@...com>
---
 drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
index 95fac020eb93..693ebdf38705 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
@@ -1863,6 +1863,14 @@ fbnic_get_rmon_stats(struct net_device *netdev,
 	*ranges = fbnic_rmon_ranges;
 }
 
+static void fbnic_get_link_ext_stats(struct net_device *netdev,
+				     struct ethtool_link_ext_stats *stats)
+{
+	struct fbnic_net *fbn = netdev_priv(netdev);
+
+	stats->link_down_events = fbn->link_down_events;
+}
+
 static const struct ethtool_ops fbnic_ethtool_ops = {
 	.cap_link_lanes_supported	= true,
 	.supported_coalesce_params	= ETHTOOL_COALESCE_USECS |
@@ -1874,6 +1882,7 @@ static const struct ethtool_ops fbnic_ethtool_ops = {
 	.get_regs_len			= fbnic_get_regs_len,
 	.get_regs			= fbnic_get_regs,
 	.get_link			= ethtool_op_get_link,
+	.get_link_ext_stats		= fbnic_get_link_ext_stats,
 	.get_coalesce			= fbnic_get_coalesce,
 	.set_coalesce			= fbnic_set_coalesce,
 	.get_ringparam			= fbnic_get_ringparam,