include/libnetlink.h

   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 *);
  25 extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
  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 *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
  55
  56 #endif /* __LIBNETLINK_H__ */
  57