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Diffstat (limited to 'net/ipv4/netfilter.c')
-rw-r--r--net/ipv4/netfilter.c50
1 files changed, 42 insertions, 8 deletions
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index b5ad9ac2fbcc..6a9e34b794bc 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -133,7 +133,7 @@ struct ip_rt_info {
u_int8_t tos;
};
-static void queue_save(const struct sk_buff *skb, struct nf_info *info)
+static void nf_ip_saveroute(const struct sk_buff *skb, struct nf_info *info)
{
struct ip_rt_info *rt_info = nf_info_reroute(info);
@@ -146,7 +146,7 @@ static void queue_save(const struct sk_buff *skb, struct nf_info *info)
}
}
-static int queue_reroute(struct sk_buff **pskb, const struct nf_info *info)
+static int nf_ip_reroute(struct sk_buff **pskb, const struct nf_info *info)
{
const struct ip_rt_info *rt_info = nf_info_reroute(info);
@@ -161,20 +161,54 @@ static int queue_reroute(struct sk_buff **pskb, const struct nf_info *info)
return 0;
}
-static struct nf_queue_rerouter ip_reroute = {
- .rer_size = sizeof(struct ip_rt_info),
- .save = queue_save,
- .reroute = queue_reroute,
+unsigned int nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol)
+{
+ struct iphdr *iph = skb->nh.iph;
+ unsigned int csum = 0;
+
+ switch (skb->ip_summed) {
+ case CHECKSUM_HW:
+ if (hook != NF_IP_PRE_ROUTING && hook != NF_IP_LOCAL_IN)
+ break;
+ if ((protocol == 0 && !(u16)csum_fold(skb->csum)) ||
+ !csum_tcpudp_magic(iph->saddr, iph->daddr,
+ skb->len - dataoff, protocol,
+ skb->csum)) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ break;
+ }
+ /* fall through */
+ case CHECKSUM_NONE:
+ if (protocol == 0)
+ skb->csum = 0;
+ else
+ skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
+ skb->len - dataoff,
+ protocol, 0);
+ csum = __skb_checksum_complete(skb);
+ }
+ return csum;
+}
+
+EXPORT_SYMBOL(nf_ip_checksum);
+
+static struct nf_afinfo nf_ip_afinfo = {
+ .family = AF_INET,
+ .checksum = nf_ip_checksum,
+ .saveroute = nf_ip_saveroute,
+ .reroute = nf_ip_reroute,
+ .route_key_size = sizeof(struct ip_rt_info),
};
static int ipv4_netfilter_init(void)
{
- return nf_register_queue_rerouter(PF_INET, &ip_reroute);
+ return nf_register_afinfo(&nf_ip_afinfo);
}
static void ipv4_netfilter_fini(void)
{
- nf_unregister_queue_rerouter(PF_INET);
+ nf_unregister_afinfo(&nf_ip_afinfo);
}
module_init(ipv4_netfilter_init);
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