| From foo@baz Wed 01 Jan 2020 10:36:29 PM CET |
| From: Hangbin Liu <liuhangbin@gmail.com> |
| Date: Sun, 22 Dec 2019 10:51:15 +0800 |
| Subject: sit: do not confirm neighbor when do pmtu update |
| |
| From: Hangbin Liu <liuhangbin@gmail.com> |
| |
| [ Upstream commit 4d42df46d6372ece4cb4279870b46c2ea7304a47 ] |
| |
| 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@redhat.com> |
| Acked-by: David Ahern <dsahern@gmail.com> |
| Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| net/ipv6/sit.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/net/ipv6/sit.c |
| +++ b/net/ipv6/sit.c |
| @@ -943,7 +943,7 @@ static netdev_tx_t ipip6_tunnel_xmit(str |
| } |
| |
| 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); |
