Update to 2.6.19 headers

Headers extracted from early 2.6.20 development process

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
diff --git a/include/libnetlink.h b/include/libnetlink.h
index 63cc3c8..9de3a0b 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -4,6 +4,9 @@
 #include <asm/types.h>
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
+#include <linux/if_link.h>
+#include <linux/if_addr.h>
+#include <linux/neighbour.h>
 
 struct rtnl_handle
 {
@@ -53,5 +56,37 @@
 #define NLMSG_TAIL(nmsg) \
 	((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
 
+#ifndef IFA_RTA
+#define IFA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
+#endif
+#ifndef IFA_PAYLOAD
+#define IFA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+#endif
+
+#ifndef IFLA_RTA
+#define IFLA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
+#endif
+#ifndef IFLA_PAYLOAD
+#define IFLA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
+#endif
+
+#ifndef NDA_RTA
+#define NDA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
+#endif
+#ifndef NDA_PAYLOAD
+#define NDA_PAYLOAD(n)	NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
+#endif
+
+#ifndef NDTA_RTA
+#define NDTA_RTA(r) \
+	((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
+#endif
+#ifndef NDTA_PAYLOAD
+#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
+#endif
+
 #endif /* __LIBNETLINK_H__ */