1 #ifndef __LIBNETLINK_H__ 2 #define __LIBNETLINK_H__ 3 4 #include <stdio.h> 5 #include <asm/types.h> 6 #include <linux/netlink.h> 7 #include <linux/rtnetlink.h> 8 #include <sys/types.h> 9 10 struct rtnl_handle 11 { 12 int fd; 13 struct sockaddr_nl local; 14 struct sockaddr_nl peer; 15 __u32 seq; 16 __u32 dump; 17 }; 18 19 int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions); 20 int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, 21 int protocol); 22 void rtnl_close(struct rtnl_handle *rth); 23 int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type); 24 int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len); 25 26 typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, struct nlmsghdr *n, 27 void *); 28 int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, 29 void *arg1, rtnl_filter_t junk, void *arg2); 30 int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer, 31 unsigned groups, struct nlmsghdr *answer, rtnl_filter_t junk, 32 void *jarg); 33 int rtnl_send(struct rtnl_handle *rth, const char *buf, int); 34 35 int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); 36 int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); 37 int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, 38 int alen); 39 int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); 40 int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data); 41 int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data); 42 int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); 43 int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data); 44 int rta_addattr_l(struct rtattr *rta, int maxlen, int type, 45 const void *data, int alen); 46 47 int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); 48 int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, 49 int len); 50 51 struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type); 52 int rta_nest_end(struct rtattr *rta, struct rtattr *nest); 53 54 #define RTA_TAIL(rta) \ 55 ((struct rtattr *) (((void *) (rta)) + \ 56 RTA_ALIGN((rta)->rta_len))) 57 58 #define parse_rtattr_nested(tb, max, rta) \ 59 (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) 60 61 int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, void *jarg); 62 int rtnl_from_file(FILE *, rtnl_filter_t handler, void *jarg); 63 64 #define NLMSG_TAIL(nmsg) \ 65 ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) 66 67 #endif /* __LIBNETLINK_H__ */ 68
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