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         int                     pf;
  12         unsigned int            hook;
  13         struct net_device       *indev;
  14         struct net_device       *outdev;
  15         int                     (*okfn)(struct sk_buff *);
  16 };
  17
  18 #define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
  19
  20 /* Packet queuing */
  21 struct nf_queue_handler {
  22         int                     (*outfn)(struct nf_queue_entry *entry,
  23                                          unsigned int queuenum);
  24         char                    *name;
  25 };
  26
  27 extern int nf_register_queue_handler(int pf,
  28                                      const struct nf_queue_handler *qh);
  29 extern int nf_unregister_queue_handler(int pf,
  30                                        const struct nf_queue_handler *qh);
  31 extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh);
  32 extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
  33
  34 #endif /* _NF_QUEUE_H */