[V4 PATCH 3/3] bond: service netpoll arp queue on master device

[Amerigo Wang <amwang@redhat.com>]

Neil pointed out that we can't send ARP reply on behalf of slaves,
we need to move the arp queue to their bond device.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Neil Horman <nhorman@redhat.com>

---
 net/core/netpoll.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index f68e694..013e04a 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -193,6 +193,15 @@ void netpoll_poll_dev(struct net_device *dev)
 
 	poll_napi(dev);
 
+	if (dev->priv_flags & IFF_SLAVE) {
+		if (dev->npinfo) {
+			struct net_device *bond_dev = dev->master;
+			struct sk_buff *skb;
+			while ((skb = skb_dequeue(&dev->npinfo->arp_tx)))
+				skb_queue_tail(&bond_dev->npinfo->arp_tx, skb);
+		}
+	}
+
 	service_arp_queue(dev->npinfo);
 
 	zap_completion_queue();
-- 
1.7.1