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Date: Mon, 13 Jan 2020 09:00:36 +0000 From: Xu Wang <vulab@...as.ac.cn> To: davem@...emloft.net, herbert@...dor.apana.org.au, steffen.klassert@...unet.com Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] 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@...as.ac.cn> --- net/xfrm/xfrm_interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c index 7ac1542..e732637 100644 --- a/net/xfrm/xfrm_interface.c +++ b/net/xfrm/xfrm_interface.c @@ -297,7 +297,7 @@ 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) -- 2.7.4
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