#ifndef __RTNETLINK_WRAPPER_H
#define __RTNETLINK_WRAPPER_H 1

#include_next <linux/rtnetlink.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
static inline void rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
			       struct nlmsghdr *nlh, gfp_t flags)
{
	BUG_ON(nlh);		/* not implemented */
	if (group) {
		/* errors reported via destination sk->sk_err */
		nlmsg_multicast(rtnl, skb, 0, group);
	}
}

static inline void rtnl_set_sk_err(u32 group, int error)
{
	netlink_set_err(rtnl, 0, group, error);
}
#endif

/* No 'net' parameter in these versions. */
#define rtnl_notify(skb, net, pid, group, nlh, flags) \
		    ((void) rtnl_notify(skb, pid, group, nlh, flags))
#define rtnl_set_sk_err(net, group, error) \
			(rtnl_set_sk_err(group, error))
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
/* Make the return type effectively 'void' to match Linux 2.6.30+. */
#define rtnl_notify(skb, net, pid, group, nlh, flags) \
	((void) rtnl_notify(skb, net, pid, group, nlh, flags))
#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
static inline int rtnl_is_locked(void)
{
	if (unlikely(rtnl_trylock())) {
		rtnl_unlock();
		return 0;
	}

	return 1;
}

#endif

#endif /* linux/rtnetlink.h wrapper */