Pull acpi_device_handle_cleanup into release branch

[linux-2.6] / net / ipv6 / netfilter.c

diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index f514a0113b9f42c036fea572d863eac0f61cadec..395a417ba9554baaeb0d9678c543abe4e802b3eb 100644 (file)
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -7,6 +7,7 @@
 #include <net/ipv6.h>
 #include <net/ip6_route.h>
 #include <net/xfrm.h>
+#include <net/ip6_checksum.h>
 
 int ip6_route_me_harder(struct sk_buff *skb)
 {
@@ -79,8 +80,42 @@ static int nf_ip6_reroute(struct sk_buff **pskb, const struct nf_info *info)
        return 0;
 }
 
+unsigned int nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
+                            unsigned int dataoff, u_int8_t protocol)
+{
+       struct ipv6hdr *ip6h = skb->nh.ipv6h;
+       unsigned int csum = 0;
+
+       switch (skb->ip_summed) {
+       case CHECKSUM_HW:
+               if (hook != NF_IP6_PRE_ROUTING && hook != NF_IP6_LOCAL_IN)
+                       break;
+               if (!csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+                                    skb->len - dataoff, protocol,
+                                    csum_sub(skb->csum,
+                                             skb_checksum(skb, 0,
+                                                          dataoff, 0)))) {
+                       skb->ip_summed = CHECKSUM_UNNECESSARY;
+                       break;
+               }
+               /* fall through */
+       case CHECKSUM_NONE:
+               skb->csum = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+                                            skb->len - dataoff,
+                                            protocol,
+                                            csum_sub(0,
+                                                     skb_checksum(skb, 0,
+                                                                  dataoff, 0)));
+               csum = __skb_checksum_complete(skb);
+       }
+       return csum;
+}
+
+EXPORT_SYMBOL(nf_ip6_checksum);
+
 static struct nf_afinfo nf_ip6_afinfo = {
        .family         = AF_INET6,
+       .checksum       = nf_ip6_checksum,
        .saveroute      = nf_ip6_saveroute,
        .reroute        = nf_ip6_reroute,
        .route_key_size = sizeof(struct ip6_rt_info),