netdev - [PATCH net-next] net: link_watch: mark bonding link events urgent

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Date:   Sun, 21 Jan 2018 22:07:53 -0800
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, nikolay@...ulusnetworks.com,
        dsa@...ulusnetworks.com, jiri@...nulli.us
Subject: [PATCH net-next] net: link_watch: mark bonding link events urgent

From: Roopa Prabhu <roopa@...ulusnetworks.com>

It takes 1sec for bond link down notification to hit user-space
when all slaves of the bond go down. 1sec is too long for
protocol daemons in user-space relying on bond link notification
to failover/recover (eg: multichassis lag implementations in user-space).
Since the link event code already marks team device port link events
 urgent, this patch does the same for bonding link events.

Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 net/core/link_watch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 9828616..63bb2ad 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -92,7 +92,7 @@ static bool linkwatch_urgent_event(struct net_device *dev)
 	if (dev->ifindex != dev_get_iflink(dev))
 		return true;
 
-	if (dev->priv_flags & IFF_TEAM_PORT)
+	if (dev->priv_flags & (IFF_TEAM_PORT | IFF_BONDING))
 		return true;
 
 	return netif_carrier_ok(dev) &&	qdisc_tx_changing(dev);
-- 
2.1.4