libnetlink.h revision 2f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bf
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#include <linux/if_link.h> 8#include <linux/if_addr.h> 9#include <linux/neighbour.h> 10 11struct rtnl_handle 12{ 13 int fd; 14 struct sockaddr_nl local; 15 struct sockaddr_nl peer; 16 __u32 seq; 17 __u32 dump; 18}; 19 20extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions); 21extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol); 22extern void rtnl_close(struct rtnl_handle *rth); 23extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type); 24extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len); 25 26typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, 27 struct nlmsghdr *n, void *); 28extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, 29 void *arg1, 30 rtnl_filter_t junk, 31 void *arg2); 32extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer, 33 unsigned groups, struct nlmsghdr *answer, 34 rtnl_filter_t junk, 35 void *jarg); 36extern int rtnl_send(struct rtnl_handle *rth, const char *buf, int); 37 38 39extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); 40extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); 41extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); 42extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); 43extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); 44extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len); 45extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); 46extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); 47extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen); 48 49extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); 50extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len); 51extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); 52 53#define parse_rtattr_nested(tb, max, rta) \ 54 (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) 55 56#define parse_rtattr_nested_compat(tb, max, rta, data, len) \ 57({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ 58 __parse_rtattr_nested_compat(tb, max, rta, len); }) 59 60extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, 61 void *jarg); 62extern int rtnl_from_file(FILE *, rtnl_filter_t handler, 63 void *jarg); 64 65#define NLMSG_TAIL(nmsg) \ 66 ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) 67 68#ifndef IFA_RTA 69#define IFA_RTA(r) \ 70 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 71#endif 72#ifndef IFA_PAYLOAD 73#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 74#endif 75 76#ifndef IFLA_RTA 77#define IFLA_RTA(r) \ 78 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) 79#endif 80#ifndef IFLA_PAYLOAD 81#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) 82#endif 83 84#ifndef NDA_RTA 85#define NDA_RTA(r) \ 86 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) 87#endif 88#ifndef NDA_PAYLOAD 89#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) 90#endif 91 92#ifndef NDTA_RTA 93#define NDTA_RTA(r) \ 94 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) 95#endif 96#ifndef NDTA_PAYLOAD 97#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) 98#endif 99 100#endif /* __LIBNETLINK_H__ */ 101 102