[NEIGH]: Move netlink neighbour bits to linux/neighbour.h

Moves netlink neighbour bits to linux/neighbour.h. Also
moves bits to be exported to userspace from net/neighbour.h
to linux/neighbour.h and removes __KERNEL__ guards, userspace
is not supposed to be using it.

rtnetlink_rcv_msg() is not longer required to parse attributes
for the neighbour layer, remove dependency on obsolete and
buggy rta_buf.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 4901ee4..74c4b6f 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -1,6 +1,8 @@
 #ifndef _NET_NEIGHBOUR_H
 #define _NET_NEIGHBOUR_H
 
+#include <linux/neighbour.h>
+
 /*
  *	Generic neighbour manipulation
  *
@@ -14,40 +16,6 @@
  *		- Add neighbour cache statistics like rtstat
  */
 
-/* The following flags & states are exported to user space,
-   so that they should be moved to include/linux/ directory.
- */
-
-/*
- *	Neighbor Cache Entry Flags
- */
-
-#define NTF_PROXY	0x08	/* == ATF_PUBL */
-#define NTF_ROUTER	0x80
-
-/*
- *	Neighbor Cache Entry States.
- */
-
-#define NUD_INCOMPLETE	0x01
-#define NUD_REACHABLE	0x02
-#define NUD_STALE	0x04
-#define NUD_DELAY	0x08
-#define NUD_PROBE	0x10
-#define NUD_FAILED	0x20
-
-/* Dummy states */
-#define NUD_NOARP	0x40
-#define NUD_PERMANENT	0x80
-#define NUD_NONE	0x00
-
-/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
-   and make no address resolution or NUD.
-   NUD_PERMANENT is also cannot be deleted by garbage collectors.
- */
-
-#ifdef __KERNEL__
-
 #include <asm/atomic.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
@@ -374,6 +342,3 @@
 #define NEIGH_CB(skb)	((struct neighbour_cb *)(skb)->cb)
 
 #endif
-#endif
-
-