[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>

1 files changed, 65 insertions, 0 deletions

diff --git a/include/linux/neighbour.h b/include/linux/neighbour.h
new file mode 100644
index 000000000000..8e8293d86fbb
--- /dev/null
+++ b/include/linux/neighbour.h
@@ -0,0 +1,65 @@
+#ifndef __LINUX_NEIGHBOUR_H
+#define __LINUX_NEIGHBOUR_H
+
+#include <linux/netlink.h>
+
+struct ndmsg
+{
+        __u8            ndm_family;
+        __u8            ndm_pad1;
+        __u16           ndm_pad2;
+        __s32           ndm_ifindex;
+        __u16           ndm_state;
+        __u8            ndm_flags;
+        __u8            ndm_type;
+};
+
+enum
+{
+        NDA_UNSPEC,
+        NDA_DST,
+        NDA_LLADDR,
+        NDA_CACHEINFO,
+        NDA_PROBES,
+        __NDA_MAX
+};
+
+#define NDA_MAX (__NDA_MAX - 1)
+
+/*
+ *      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.
+ */
+
+struct nda_cacheinfo
+{
+        __u32           ndm_confirmed;
+        __u32           ndm_used;
+        __u32           ndm_updated;
+        __u32           ndm_refcnt;
+};
+
+#endif