From: stephen hemminger <stephen@networkplumber.org>
Date: Fri, 6 Jun 2014 15:10:00 +0000 (-0700)
Subject: gre: allow changing mac address when device is up
X-Git-Tag: firefly_0821_release~176^2~3765^2~47
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f8c1b7ce00254a5bb75d5b5e5ef1601326a0e08e;p=firefly-linux-kernel-4.4.55.git

gre: allow changing mac address when device is up

There is no need to require forcing device down on a Ethernet GRE (gretap)
tunnel to change the MAC address.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index c5a557a06a31..9b842544aea3 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -649,6 +649,7 @@ static void ipgre_tap_setup(struct net_device *dev)
 {
 	ether_setup(dev);
 	dev->netdev_ops		= &gre_tap_netdev_ops;
+	dev->priv_flags 	|= IFF_LIVE_ADDR_CHANGE;
 	ip_tunnel_setup(dev, gre_tap_net_id);
 }