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Date: Sun, 22 Dec 2019 10:51:15 +0800 From: Hangbin Liu <liuhangbin@...il.com> To: netdev@...r.kernel.org Cc: Julian Anastasov <ja@....bg>, Marcelo Ricardo Leitner <marcelo.leitner@...il.com>, David Ahern <dsahern@...il.com>, Eric Dumazet <edumazet@...gle.com>, Guillaume Nault <gnault@...hat.com>, David Miller <davem@...emloft.net>, Pablo Neira <pablo@...filter.org>, Stephen Hemminger <stephen@...workplumber.org>, Alexey Kodanev <alexey.kodanev@...cle.com>, Hangbin Liu <liuhangbin@...il.com> Subject: [PATCHv5 net 7/8] sit: 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. v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu. Reviewed-by: Guillaume Nault <gnault@...hat.com> Acked-by: David Ahern <dsahern@...il.com> Signed-off-by: Hangbin Liu <liuhangbin@...il.com> --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index b2ccbc473127..98954830c40b 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -944,7 +944,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, } if (tunnel->parms.iph.daddr) - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->len > mtu && !skb_is_gso(skb)) { icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); -- 2.19.2
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