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1/* IPv4-specific defines for netfilter.
2 * (C)1998 Rusty Russell -- This code is GPL.
3 */
4#ifndef __LINUX_IP_NETFILTER_H
5#define __LINUX_IP_NETFILTER_H
6
7#include <uapi/linux/netfilter_ipv4.h>
8
9/* Extra routing may needed on local out, as the QUEUE target never returns
10 * control to the table.
11 */
12struct ip_rt_info {
13 __be32 daddr;
14 __be32 saddr;
15 u_int8_t tos;
16 u_int32_t mark;
17};
18
19int ip_route_me_harder(struct net *net, struct sk_buff *skb, unsigned addr_type);
20
21struct nf_queue_entry;
22
23#ifdef CONFIG_INET
24__sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
25 unsigned int dataoff, u_int8_t protocol);
26int nf_ip_route(struct net *net, struct dst_entry **dst, struct flowi *fl,
27 bool strict);
28int nf_ip_reroute(struct sk_buff *skb, const struct nf_queue_entry *entry);
29#else
30static inline __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
31 unsigned int dataoff, u_int8_t protocol)
32{
33 return 0;
34}
35static inline int nf_ip_route(struct net *net, struct dst_entry **dst,
36 struct flowi *fl, bool strict)
37{
38 return -EOPNOTSUPP;
39}
40static inline int nf_ip_reroute(struct sk_buff *skb,
41 const struct nf_queue_entry *entry)
42{
43 return -EOPNOTSUPP;
44}
45#endif /* CONFIG_INET */
46
47#endif /*__LINUX_IP_NETFILTER_H*/