root/include/net/netfilter/nf_queue.h

INCLUDED FROM

#ifndef _NF_QUEUE_H
#define _NF_QUEUE_H

/* Each queued (to userspace) skbuff has one of these. */
struct nf_queue_entry {
        struct list_head        list;
        struct sk_buff          *skb;
        unsigned int            id;

        struct nf_hook_ops      *elem;
        u_int8_t                pf;
        unsigned int            hook;
        struct net_device       *indev;
        struct net_device       *outdev;
        int                     (*okfn)(struct sk_buff *);
};

#define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))

/* Packet queuing */
struct nf_queue_handler {
        int                     (*outfn)(struct nf_queue_entry *entry,
                                         unsigned int queuenum);
        char                    *name;
};

extern int nf_register_queue_handler(u_int8_t pf,
                                     const struct nf_queue_handler *qh);
extern int nf_unregister_queue_handler(u_int8_t pf,
                                       const struct nf_queue_handler *qh);
extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh);
extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);

#endif /* _NF_QUEUE_H */