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#include <linux/kernel.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_queue.h>
__sum16 nf_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol,
unsigned short family)
{
const struct nf_ipv6_ops *v6ops;
__sum16 csum = 0;
switch (family) {
case AF_INET:
csum = nf_ip_checksum(skb, hook, dataoff, protocol);
break;
case AF_INET6:
v6ops = rcu_dereference(nf_ipv6_ops);
if (v6ops)
csum = v6ops->checksum(skb, hook, dataoff, protocol);
break;
}
return csum;
}
EXPORT_SYMBOL_GPL(nf_checksum);
__sum16 nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, unsigned int len,
u_int8_t protocol, unsigned short family)
{
const struct nf_ipv6_ops *v6ops;
__sum16 csum = 0;
switch (family) {
case AF_INET:
csum = nf_ip_checksum_partial(skb, hook, dataoff, len,
protocol);
break;
case AF_INET6:
v6ops = rcu_dereference(nf_ipv6_ops);
if (v6ops)
csum = v6ops->checksum_partial(skb, hook, dataoff, len,
protocol);
break;
}
return csum;
}
EXPORT_SYMBOL_GPL(nf_checksum_partial);
int nf_route(struct net *net, struct dst_entry **dst, struct flowi *fl,
bool strict, unsigned short family)
{
const struct nf_ipv6_ops *v6ops;
int ret = 0;
switch (family) {
case AF_INET:
ret = nf_ip_route(net, dst, fl, strict);
break;
case AF_INET6:
v6ops = rcu_dereference(nf_ipv6_ops);
if (v6ops)
ret = v6ops->route(net, dst, fl, strict);
break;
}
return ret;
}
EXPORT_SYMBOL_GPL(nf_route);
int nf_reroute(struct sk_buff *skb, struct nf_queue_entry *entry)
{
const struct nf_ipv6_ops *v6ops;
int ret = 0;
switch (entry->state.pf) {
case AF_INET:
ret = nf_ip_reroute(skb, entry);
break;
case AF_INET6:
v6ops = rcu_dereference(nf_ipv6_ops);
if (v6ops)
ret = v6ops->reroute(skb, entry);
break;
}
return ret;
}
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