LXR linux/include/linux/netfilter

   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 sock *sk, 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);
  28#else
  29static inline __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
  30                                     unsigned int dataoff, u_int8_t protocol)
  31{
  32        return 0;
  33}
  34static inline int nf_ip_route(struct net *net, struct dst_entry **dst,
  35                              struct flowi *fl, bool strict)
  36{
  37        return -EOPNOTSUPP;
  38}
  39#endif /* CONFIG_INET */
  40
  41#endif /*__LINUX_IP_NETFILTER_H*/
  42