Commit c3a49824 authored Jan 13, 2020 by Xu Wang Committed by Greg Kroah-Hartman Feb 05, 2020

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



[ Upstream commit 8aaea2b0428b6aad7c7e22d3fddc31a78bb1d724 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent b38dd235

net/xfrm/xfrm_interface.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)