From: Hangbin Liu liuhangbin@gmail.com
[ 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@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 --- 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)