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/* libnfnetlink.h: Header file for generic netfilter netlink interface
*
* (C) 2002 Harald Welte <laforge@gnumonks.org>
*/
#ifndef __LIBNFNETLINK_H
#define __LIBNFNETLINK_H
#include <linux/types.h>
#include <linux/netlink.h>
#include <linux/nfnetlink.h>
#define NFNL_BUFFSIZE 8192
struct nfnl_handle {
int fd;
struct sockaddr_nl local;
struct sockaddr_nl peer;
u_int8_t subsys_id;
u_int32_t seq;
u_int32_t dump;
};
/* get a new library handle */
extern int nfnl_open(struct nfnl_handle *nfnlh, u_int8_t subsys_id,
unsigned int subscriptions);
extern int nfnl_close(struct nfnl_handle *nfnlh);
int nfnl_send(struct nfnl_handle *nfnlh, struct nlmsghdr *n);
void nfnl_fill_hdr(struct nfnl_handle *nfnlh,
struct nlmsghdr *nlh, int len,
u_int8_t family,
u_int16_t msg_type,
u_int16_t msg_flags);
int nfnl_listen(struct nfnl_handle *nfnlh,
int (*handler)(struct sockaddr_nl *, struct nlmsghdr *n,
void *), void *jarg);
/* nfnl attribute handling functions */
int nfnl_addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data,
int alen);
int nfnl_addattr32(struct nlmsghdr *n, int maxlen, int type,
u_int32_t data);
int nfnl_nfa_addattr_l(struct nfattr *nfa, int maxlen, int type, void *data,
int alen);
int nfnl_nfa_addattr32(struct nfattr *nfa, int maxlen, int type,
u_int32_t data);
int nfnl_parse_attr(struct nfattr *tb[], int max, struct nfattr *nfa, int len);
#endif /* __LIBNFNETLINK_H */
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