This is a note to let you know that I've just added the patch titled net/dst: add new function skb_dst_update_pmtu_no_confirm to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-dst-add-new-function-skb_dst_update_pmtu_no_confirm.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Wed 01 Jan 2020 10:36:29 PM CET From: Hangbin Liu <liuhangbin@xxxxxxxxx> Date: Sun, 22 Dec 2019 10:51:12 +0800 Subject: net/dst: add new function skb_dst_update_pmtu_no_confirm From: Hangbin Liu <liuhangbin@xxxxxxxxx> [ Upstream commit 07dc35c6e3cc3c001915d05f5bf21f80a39a0970 ] Add a new function skb_dst_update_pmtu_no_confirm() for callers who need update pmtu but should not do neighbor confirm. 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@xxxxxxxxxx> Acked-by: David Ahern <dsahern@xxxxxxxxx> Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- include/net/dst.h | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/include/net/dst.h +++ b/include/net/dst.h @@ -530,6 +530,15 @@ static inline void skb_dst_update_pmtu(s dst->ops->update_pmtu(dst, NULL, skb, mtu, true); } +/* update dst pmtu but not do neighbor confirm */ +static inline void skb_dst_update_pmtu_no_confirm(struct sk_buff *skb, u32 mtu) +{ + struct dst_entry *dst = skb_dst(skb); + + if (dst && dst->ops->update_pmtu) + dst->ops->update_pmtu(dst, NULL, skb, mtu, false); +} + static inline void skb_tunnel_check_pmtu(struct sk_buff *skb, struct dst_entry *encap_dst, int headroom) Patches currently in stable-queue which might be from liuhangbin@xxxxxxxxx are queue-4.19/sit-do-not-confirm-neighbor-when-do-pmtu-update.patch queue-4.19/net-dst-add-new-function-skb_dst_update_pmtu_no_confirm.patch queue-4.19/vti-do-not-confirm-neighbor-when-do-pmtu-update.patch queue-4.19/net-dst-do-not-confirm-neighbor-for-vxlan-and-geneve-pmtu-update.patch queue-4.19/gtp-do-not-confirm-neighbor-when-do-pmtu-update.patch queue-4.19/ip6_gre-do-not-confirm-neighbor-when-do-pmtu-update.patch queue-4.19/net-add-bool-confirm_neigh-parameter-for-dst_ops.update_pmtu.patch queue-4.19/tunnel-do-not-confirm-neighbor-when-do-pmtu-update.patch