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 int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
  39 void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
  40 const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);
  41
  42 int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
  43                                   enum ip_conntrack_info ctinfo,
  44                                   unsigned int hooknum);
  45
  46 unsigned int nf_nat_ipv4_in(void *priv, struct sk_buff *skb,
  47                             const struct nf_hook_state *state,
  48                             unsigned int (*do_chain)(void *priv,
  49                                                      struct sk_buff *skb,
  50                                                      const struct nf_hook_state *state,
  51                                                      struct nf_conn *ct));
  52
  53 unsigned int nf_nat_ipv4_out(void *priv, struct sk_buff *skb,
  54                              const struct nf_hook_state *state,
  55                              unsigned int (*do_chain)(void *priv,
  56                                                       struct sk_buff *skb,
  57                                                       const struct nf_hook_state *state,
  58                                                       struct nf_conn *ct));
  59
  60 unsigned int nf_nat_ipv4_local_fn(void *priv,
  61                                   struct sk_buff *skb,
  62                                   const struct nf_hook_state *state,
  63                                   unsigned int (*do_chain)(void *priv,
  64                                                            struct sk_buff *skb,
  65                                                            const struct nf_hook_state *state,
  66                                                            struct nf_conn *ct));
  67
  68 unsigned int nf_nat_ipv4_fn(void *priv, struct sk_buff *skb,
  69                             const struct nf_hook_state *state,
  70                             unsigned int (*do_chain)(void *priv,
  71                                                      struct sk_buff *skb,
  72                                                      const struct nf_hook_state *state,
  73                                                      struct nf_conn *ct));
  74
  75 int nf_nat_icmpv6_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
  76                                     enum ip_conntrack_info ctinfo,
  77                                     unsigned int hooknum, unsigned int hdrlen);
  78
  79 unsigned int nf_nat_ipv6_in(void *priv, struct sk_buff *skb,
  80                             const struct nf_hook_state *state,
  81                             unsigned int (*do_chain)(void *priv,
  82                                                      struct sk_buff *skb,
  83                                                      const struct nf_hook_state *state,
  84                                                      struct nf_conn *ct));
  85
  86 unsigned int nf_nat_ipv6_out(void *priv, struct sk_buff *skb,
  87                              const struct nf_hook_state *state,
  88                              unsigned int (*do_chain)(void *priv,
  89                                                       struct sk_buff *skb,
  90                                                       const struct nf_hook_state *state,
  91                                                       struct nf_conn *ct));
  92
  93 unsigned int nf_nat_ipv6_local_fn(void *priv,
  94                                   struct sk_buff *skb,
  95                                   const struct nf_hook_state *state,
  96                                   unsigned int (*do_chain)(void *priv,
  97                                                            struct sk_buff *skb,
  98                                                            const struct nf_hook_state *state,
  99                                                            struct nf_conn *ct));
 100
 101 unsigned int nf_nat_ipv6_fn(void *priv, struct sk_buff *skb,
 102                             const struct nf_hook_state *state,
 103                             unsigned int (*do_chain)(void *priv,
 104                                                      struct sk_buff *skb,
 105                                                      const struct nf_hook_state *state,
 106                                                      struct nf_conn *ct));
 107
 108 #endif /* _NF_NAT_L3PROTO_H */