libnetlink.h

   1 #ifndef __LIBNETLINK_H__
   2 #define __LIBNETLINK_H__
   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 int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
  18 int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
  19                       int protocol);
  20 void rtnl_close(struct rtnl_handle *rth);
  21 int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
  22 int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
  23
  24 typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, struct nlmsghdr *n,
  25                              void *);
  26 int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
  27                      void *arg1, rtnl_filter_t junk, void *arg2);
  28 int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
  29               unsigned groups, struct nlmsghdr *answer, rtnl_filter_t junk,
  30               void *jarg);
  31 int rtnl_send(struct rtnl_handle *rth, const char *buf, int);
  32
  33 int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
  34 int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
  35 int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
  36               int alen);
  37 int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
  38 int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
  39 int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
  40                          const void *data, int alen);
  41
  42 int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
  43 int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta,
  44                          int len);
  45
  46 #define parse_rtattr_nested(tb, max, rta) \
  47     (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
  48
  49 int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, void *jarg);
  50 int rtnl_from_file(FILE *, rtnl_filter_t handler, void *jarg);
  51
  52 #define NLMSG_TAIL(nmsg) \
  53     ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
  54
  55 #endif /* __LIBNETLINK_H__ */