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/* vi: set sw=4 ts=4: */
#ifndef LIBNETLINK_H
#define LIBNETLINK_H 1
#include <linux/types.h>
/* We need linux/types.h because older kernels use __u32 etc
* in linux/[rt]netlink.h. 2.6.19 seems to be ok, though */
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
struct rtnl_handle {
int fd;
struct sockaddr_nl local;
struct sockaddr_nl peer;
uint32_t seq;
uint32_t dump;
};
extern void xrtnl_open(struct rtnl_handle *rth) FAST_FUNC;
#define rtnl_close(rth) (close((rth)->fd))
extern void xrtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) FAST_FUNC;
extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len) FAST_FUNC;
extern int xrtnl_dump_filter(struct rtnl_handle *rth,
int (*filter)(const struct sockaddr_nl*, struct nlmsghdr *n, void*) FAST_FUNC,
void *arg1) FAST_FUNC;
/* bbox doesn't use parameters no. 3, 4, 6, 7, stub them out */
#define rtnl_talk(rtnl, n, peer, groups, answer, junk, jarg) \
rtnl_talk(rtnl, n, answer)
extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
unsigned groups, struct nlmsghdr *answer,
int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
void *jarg) FAST_FUNC;
int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int len) FAST_FUNC;
//TODO: pass rth->fd instead of full rth?
static ALWAYS_INLINE void rtnl_send(struct rtnl_handle *rth, const void *buf, int len)
{
// Used to be:
//struct sockaddr_nl nladdr;
//memset(&nladdr, 0, sizeof(nladdr));
//nladdr.nl_family = AF_NETLINK;
//return xsendto(rth->fd, buf, len, (struct sockaddr*)&nladdr, sizeof(nladdr));
// iproute2-4.2.0 simplified the above to:
//return send(rth->fd, buf, len, 0);
// We are using even shorter:
xwrite(rth->fd, buf, len);
// and convert to void, inline.
}
extern int addattr32(struct nlmsghdr *n, int maxlen, int type, uint32_t data) FAST_FUNC;
extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, int alen) FAST_FUNC;
extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, uint32_t data) FAST_FUNC;
extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen) FAST_FUNC;
extern void parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len) FAST_FUNC;
POP_SAVED_FUNCTION_VISIBILITY
#endif
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