xfrm: interface: do not confirm neighbor when do pmtu update

When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end,
we should not call dst_confirm_neigh() as there is no two-way communication.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 00393179f18521646c8377c29b21af156f4dd8e4..dc651a628dcf07df229ff85878c744a257f01f49 100644 (file)
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -294,7 +294,7 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
 
        mtu = dst_mtu(dst);
        if (!skb->ignore_df && skb->len > mtu) {
-               skb_dst_update_pmtu(skb, mtu);
+               skb_dst_update_pmtu_no_confirm(skb, mtu);
 
                if (skb->protocol == htons(ETH_P_IPV6)) {
                        if (mtu < IPV6_MIN_MTU)