linux-kernel - [PATCH] net_sched: use macvlan real dev trans_start in dev_trans

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Date:   Wed,  6 Dec 2017 10:50:28 -0500
From:   Chris Dion <christopher.dion@...l.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Chris Dion <christopher.dion@...l.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net_sched: use macvlan real dev trans_start in dev_trans_start()

Macvlan devices are similar to vlans and do not update their
own trans_start. In order for arp monitoring to work for a bond device
when the slaves are macvlans, obtain its real device.

Signed-off-by: Chris Dion <christopher.dion@...l.com>
---
 net/sched/sch_generic.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 3839cbb..cd1b200 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -26,6 +26,7 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/if_vlan.h>
+#include <linux/if_macvlan.h>
 #include <net/sch_generic.h>
 #include <net/pkt_sched.h>
 #include <net/dst.h>
@@ -277,6 +278,8 @@ unsigned long dev_trans_start(struct net_device *dev)
 
 	if (is_vlan_dev(dev))
 		dev = vlan_dev_real_dev(dev);
+	else if (netif_is_macvlan(dev))
+		dev = macvlan_dev_real_dev(dev);
 	res = netdev_get_tx_queue(dev, 0)->trans_start;
 	for (i = 1; i < dev->num_tx_queues; i++) {
 		val = netdev_get_tx_queue(dev, i)->trans_start;
-- 
1.9.4