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authorHangbin Liu <liuhangbin@gmail.com>2019-12-22 10:51:16 +0800
committerDavid S. Miller <davem@davemloft.net>2019-12-24 22:28:55 -0800
commitf081042d128a0c7acbd67611def62e1b52e2d294 (patch)
treed45b1c2d62ee09cf5b45f1ea9f6f2a9d17aacccb /include
parentsit: do not confirm neighbor when do pmtu update (diff)
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net/dst: do not confirm neighbor for vxlan and geneve 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. So disable the neigh confirm for vxlan and geneve pmtu update. 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. Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path") Reviewed-by: Guillaume Nault <gnault@redhat.com> Tested-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')
-rw-r--r--include/net/dst.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index dc7cc1f1051c..3448cf865ede 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -535,7 +535,7 @@ static inline void skb_tunnel_check_pmtu(struct sk_buff *skb,
u32 encap_mtu = dst_mtu(encap_dst);
if (skb->len > encap_mtu - headroom)
- skb_dst_update_pmtu(skb, encap_mtu - headroom);
+ skb_dst_update_pmtu_no_confirm(skb, encap_mtu - headroom);
}
#endif /* _NET_DST_H */