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

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[ 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 <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Xu Wang 2020-01-13 09:00:36 +00:00 • committed by Greg Kroah-Hartman
commit c3a4982416
1 changed files with 1 additions and 1 deletions
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net/xfrm/xfrm_interface.c
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@ -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)