Dibbler - a portable DHCPv6  1.0.2RC1
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libnetlink.h
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1 #ifndef __LIBNETLINK_H__
2 #define __LIBNETLINK_H__ 1
3 
4 #include <asm/types.h>
5 #include <linux/netlink.h>
6 #include <linux/rtnetlink.h>
7 
8 struct rtnl_handle
9 {
10  int fd;
11  struct sockaddr_nl local;
12  struct sockaddr_nl peer;
13  __u32 seq;
14  __u32 dump;
15 };
16 
17 extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
18 extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol);
19 extern void rtnl_close(struct rtnl_handle *rth);
20 extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
21 extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
22 
23 typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
24  struct nlmsghdr *n, void *);
26  void *arg1,
27  rtnl_filter_t junk,
28  void *arg2);
29 extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
30  unsigned groups, struct nlmsghdr *answer,
31  rtnl_filter_t junk,
32  void *jarg);
33 extern int rtnl_send(struct rtnl_handle *rth, const char *buf, int);
34 
35 
36 extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
37 extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);
38 extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
39 extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
40 extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen);
41 
42 extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
43 extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
44 
45 #define parse_rtattr_nested(tb, max, rta) \
46  (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
47 
48 extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
49  void *jarg);
50 extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
51  void *jarg);
52 
53 #define NLMSG_TAIL(nmsg) \
54  ((struct rtattr *) (((char *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
55 
56 #endif /* __LIBNETLINK_H__ */
57 
58