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This patch is necessary, to make IPVS work, after Patrick McHardys
IPv6 NAT defragmentation changes.
Signed-off-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
---
In V2: the tunnel mode is no longer a special case.
net/netfilter/ipvs/ip_vs_xmit.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 67a3978..56f6d5d 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -88,7 +88,14 @@ __ip_vs_dst_check(struct ip_vs_dest *dest, u32 rtos)
static inline bool
__mtu_check_toobig_v6(const struct sk_buff *skb, u32 mtu)
{
- if (skb->len > mtu && !skb_is_gso(skb)) {
+ if (IP6CB(skb)->frag_max_size) {
+ /* frag_max_size tell us that, this packet have been
+ * defragmented by netfilter IPv6 conntrack module.
+ */
+ if (IP6CB(skb)->frag_max_size > mtu)
+ return true; /* largest fragment violate MTU */
+ }
+ else if (skb->len > mtu && !skb_is_gso(skb)) {
return true; /* Packet size violate MTU size */
}
return false;
--
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