1 /* libnfqnetlink.h: Header file for the Netfilter Queue library.
3 * (C) 2005 by Harald Welte <laforge@gnumonks.org>
7 * (2005/08/11) added parsing function (Eric Leblond <regit@inl.fr>)
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
13 #ifndef __LIBCTNETLINK_H
14 #define __LIBCTNETLINK_H
16 #include <libnfnetlink/libnfnetlink.h>
18 #include <linux/netfilter/nfnetlink.h>
19 #include <linux/netfilter/nfnetlink_queue.h>
27 extern struct nfnl_handle *nfq_nfnlh(struct nfq_handle *h);
28 extern int nfq_fd(struct nfq_handle *h);
30 typedef int nfq_callback(struct nfq_q_handle *gh, struct nfgenmsg *nfmsg,
31 struct nfq_data *nfad, void *data);
34 extern struct nfq_handle *nfq_open(void);
35 extern int nfq_close(struct nfq_handle *h);
37 extern int nfq_bind_pf(struct nfq_handle *h, u_int16_t pf);
38 extern int nfq_unbind_pf(struct nfq_handle *h, u_int16_t pf);
40 extern struct nfq_q_handle *nfq_create_queue(struct nfq_handle *h,
44 extern int nfq_destroy_queue(struct nfq_q_handle *qh);
46 extern int nfq_handle_packet(struct nfq_handle *h, char *buf, int len);
48 extern int nfq_set_mode(struct nfq_q_handle *qh,
49 u_int8_t mode, unsigned int len);
51 extern int nfq_set_verdict(struct nfq_q_handle *qh,
57 extern int nfq_set_verdict_mark(struct nfq_q_handle *qh,
64 /* message parsing function */
66 extern struct nfqnl_msg_packet_hdr *
67 nfq_get_msg_packet_hdr(struct nfq_data *nfad);
69 extern u_int32_t nfq_get_nfmark(struct nfq_data *nfad);
71 extern struct nfq_msg_packet_timestamp *
72 nfq_get_timestamp(struct nfq_data *nfad);
74 /* return 0 if not set */
75 extern u_int32_t nfq_get_indev(struct nfq_data *nfad);
76 extern u_int32_t nfq_get_physindev(struct nfq_data *nfad);
77 extern u_int32_t nfq_get_outdev(struct nfq_data *nfad);
78 extern u_int32_t nfq_get_physoutdev(struct nfq_data *nfad);
80 extern struct nfqnl_msg_packet_hw *nfq_get_packet_hw(struct nfq_data *nfad);
82 /* return -1 if problem, length otherwise */
83 extern int nfq_get_payload(struct nfq_data *nfad, char **data);
87 #endif /* __LIBNFQNETLINK_H */