netdev - [PATCH cumulus-4.1.y 1/5] vxlan: flush fdb entries on oper down

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Message-Id: <1484984410-3304-1-git-send-email-roopa@cumulusnetworks.com>
Date:   Fri, 20 Jan 2017 23:40:06 -0800
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, ramanb@...ulusnetworks.com,
        stephen@...workplumber.org, jbenc@...hat.com, pshelar@....org
Subject: [PATCH cumulus-4.1.y 1/5] vxlan: flush fdb entries on oper down

From: Balakrishnan Raman <ramanb@...ulusnetworks.com>

Flush fdb entries of a vxlan device when its state
changes to oper down. vxlan_stop handles flush on
admin down.

Signed-off-by: Balakrishnan Raman <ramanb@...ulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 drivers/net/vxlan.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 19b1653..15b1c23 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3276,6 +3276,12 @@ static int vxlan_netdevice_event(struct notifier_block *unused,
 		vxlan_handle_lowerdev_unregister(vn, dev);
 	else if (event == NETDEV_UDP_TUNNEL_PUSH_INFO)
 		vxlan_push_rx_ports(dev);
+	else if (event == NETDEV_CHANGE) {
+		if (dev->netdev_ops == &vxlan_netdev_ops) {
+			if (netif_running(dev) && !netif_oper_up(dev))
+				vxlan_flush(netdev_priv(dev));
+		}
+	}
 
 	return NOTIFY_DONE;
 }
-- 
1.9.1