IPVS: ICMPv6 checksum calculation

Cc: Xiaoyu Du <tingsrain@gmail.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 4 deletions

diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 4f8ddba4801..69661db420d 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -637,10 +637,12 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
         }
 
         /* And finally the ICMP checksum */
-        icmph->icmp6_cksum = 0;
-        /* TODO IPv6: is this correct for ICMPv6? */
-        ip_vs_checksum_complete(skb, icmp_offset);
-        skb->ip_summed = CHECKSUM_UNNECESSARY;
+        icmph->icmp6_cksum = ~csum_ipv6_magic(&iph->saddr, &iph->daddr,
+                                              skb->len - icmp_offset,
+                                              IPPROTO_ICMPV6, 0);
+        skb->csum_start = skb_network_header(skb) - skb->head + icmp_offset;
+        skb->csum_offset = offsetof(struct icmp6hdr, icmp6_cksum);
+        skb->ip_summed = CHECKSUM_PARTIAL;
 
         if (inout)
                 IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,