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