nf_queue.h

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#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 */