include/net/netfilter/nf_nat_l3proto.h

   1 #ifndef _NF_NAT_L3PROTO_H
   2 #define _NF_NAT_L3PROTO_H
   3
   4 struct nf_nat_l4proto;
   5 struct nf_nat_l3proto {
   6         u8      l3proto;
   7
   8         bool    (*in_range)(const struct nf_conntrack_tuple *t,
   9                             const struct nf_nat_range *range);
  10
  11         u32     (*secure_port)(const struct nf_conntrack_tuple *t, __be16);
  12
  13         bool    (*manip_pkt)(struct sk_buff *skb,
  14                              unsigned int iphdroff,
  15                              const struct nf_nat_l4proto *l4proto,
  16                              const struct nf_conntrack_tuple *target,
  17                              enum nf_nat_manip_type maniptype);
  18
  19         void    (*csum_update)(struct sk_buff *skb, unsigned int iphdroff,
  20                                __sum16 *check,
  21                                const struct nf_conntrack_tuple *t,
  22                                enum nf_nat_manip_type maniptype);
  23
  24         void    (*csum_recalc)(struct sk_buff *skb, u8 proto,
  25                                void *data, __sum16 *check,
  26                                int datalen, int oldlen);
  27
  28         void    (*decode_session)(struct sk_buff *skb,
  29                                   const struct nf_conn *ct,
  30                                   enum ip_conntrack_dir dir,
  31                                   unsigned long statusbit,
  32                                   struct flowi *fl);
  33
  34         int     (*nlattr_to_range)(struct nlattr *tb[],
  35                                    struct nf_nat_range *range);
  36 };
  37
  38 extern int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
  39 extern void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
  40 extern const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);
  41
  42 extern int nf_nat_icmp_reply_translation(struct sk_buff *skb,
  43                                          struct nf_conn *ct,
  44                                          enum ip_conntrack_info ctinfo,
  45                                          unsigned int hooknum);
  46 extern int nf_nat_icmpv6_reply_translation(struct sk_buff *skb,
  47                                            struct nf_conn *ct,
  48                                            enum ip_conntrack_info ctinfo,
  49                                            unsigned int hooknum,
  50                                            unsigned int hdrlen);
  51
  52 #endif /* _NF_NAT_L3PROTO_H */