path: root/include/net
diff options
authorHangbin Liu <liuhangbin@gmail.com>2019-12-22 10:51:12 +0800
committerDavid S. Miller <davem@davemloft.net>2019-12-24 22:28:54 -0800
commit07dc35c6e3cc3c001915d05f5bf21f80a39a0970 (patch)
tree4703785eafb7448842274ffdf3cdd86d7b01a3ab /include/net
parentgtp: do not confirm neighbor when do pmtu update (diff)
net/dst: add new function skb_dst_update_pmtu_no_confirm
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>
Diffstat (limited to 'include/net')
1 files changed, 9 insertions, 0 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index 593630e0e076..dc7cc1f1051c 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -519,6 +519,15 @@ static inline void skb_dst_update_pmtu(struct sk_buff *skb, u32 mtu)
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)