include/net/netfilter/nf_queue.h

   1 #ifndef _NF_QUEUE_H
   2 #define _NF_QUEUE_H
   3
   4 /* Each queued (to userspace) skbuff has one of these. */
   5 struct nf_queue_entry {
   6         struct list_head        list;
   7         struct sk_buff          *skb;
   8         unsigned int            id;
   9
  10         struct nf_hook_ops      *elem;
  11         u_int8_t                pf;
  12         u16                     size; /* sizeof(entry) + saved route keys */
  13         unsigned int            hook;
  14         struct net_device       *indev;
  15         struct net_device       *outdev;
  16         int                     (*okfn)(struct sk_buff *);
  17
  18         /* extra space to store route keys */
  19 };
  20
  21 #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
  22
  23 /* Packet queuing */
  24 struct nf_queue_handler {
  25         int                     (*outfn)(struct nf_queue_entry *entry,
  26                                          unsigned int queuenum);
  27 };
  28
  29 void nf_register_queue_handler(const struct nf_queue_handler *qh);
  30 void nf_unregister_queue_handler(void);
  31 extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
  32
  33 bool nf_queue_entry_get_refs(struct nf_queue_entry *entry);
  34 void nf_queue_entry_release_refs(struct nf_queue_entry *entry);
  35
  36 #endif /* _NF_QUEUE_H */