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>
22 struct nfqnl_q_handle;
25 extern int nfqnl_errno;
27 extern struct nfnl_handle *nfqnl_nfnlh(struct nfqnl_handle *h);
28 extern int nfqnl_fd(struct nfqnl_handle *h);
30 typedef int nfqnl_callback(struct nfqnl_q_handle *gh, struct nfgenmsg *nfmsg,
31 struct nfnl_q_data *nfad, void *data);
34 extern struct nfqnl_handle *nfqnl_open(void);
35 extern int nfqnl_close(struct nfqnl_handle *h);
37 extern int nfqnl_bind_pf(struct nfqnl_handle *h, u_int16_t pf);
38 extern int nfqnl_unbind_pf(struct nfqnl_handle *h, u_int16_t pf);
40 extern struct nfqnl_q_handle *nfqnl_create_queue(struct nfqnl_handle *h,
44 extern int nfqnl_destroy_queue(struct nfqnl_q_handle *qh);
46 extern int nfqnl_handle_packet(struct nfqnl_handle *h, char *buf, int len);
48 extern int nfqnl_set_mode(struct nfqnl_q_handle *qh,
49 u_int8_t mode, unsigned int len);
51 extern int nfqnl_set_verdict(struct nfqnl_q_handle *qh,
57 extern int nfqnl_set_verdict_mark(struct nfqnl_q_handle *qh,
64 /* message parsing function */
66 extern struct nfqnl_msg_packet_hdr *
67 nfqnl_get_msg_packet_hdr(struct nfnl_q_data *nfad);
69 extern u_int32_t nfqnl_get_nfmark(struct nfnl_q_data *nfad);
71 extern struct nfqnl_msg_packet_timestamp *
72 nfqnl_get_timestamp(struct nfnl_q_data *nfad);
74 /* return 0 if not set */
75 extern u_int32_t nfqnl_get_indev(struct nfnl_q_data *nfad);
76 extern u_int32_t nfqnl_get_physindev(struct nfnl_q_data *nfad);
77 extern u_int32_t nfqnl_get_outdev(struct nfnl_q_data *nfad);
78 extern u_int32_t nfqnl_get_physoutdev(struct nfnl_q_data *nfad);
80 extern struct nfqnl_msg_packet_hw *nfqnl_get_packet_hw(struct nfnl_q_data *nfad);
82 /* return 0 if problem */
83 extern int nfqnl_get_payload(struct nfnl_q_data *nfad,
84 char ** data, unsigned int* datalen);
88 #endif /* __LIBNFQNETLINK_H */