[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>

4 files changed, 67 insertions, 102 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
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 84f3eb426da2..9750f0214c22 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -386,69 +386,6 @@ struct rta_session
 
 
 
-/**************************************************************
- *              Neighbour discovery.
- ****/
-
-struct ndmsg
-{
-        unsigned char   ndm_family;
-        unsigned char   ndm_pad1;
-        unsigned short  ndm_pad2;
-        int             ndm_ifindex;    /* Link index                   */
-        __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)
-
-#define NDA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
-#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
-
-/*
- *      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
-
-
-struct nda_cacheinfo
-{
-        __u32           ndm_confirmed;
-        __u32           ndm_used;
-        __u32           ndm_updated;
-        __u32           ndm_refcnt;
-};
-
-
 /*****************************************************************
  *              Neighbour tables specific messages.
  *
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 4901ee446879..74c4b6ff8a5c 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 @@ struct neighbour_cb {
 #define NEIGH_CB(skb)   ((struct neighbour_cb *)(skb)->cb)
 
 #endif
-#endif
-
-
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 93ba04fb8444..78ccbd4c4e37 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -104,7 +104,6 @@ static const int rtm_min[RTM_NR_FAMILIES] =
         [RTM_FAM(RTM_NEWLINK)]      = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
         [RTM_FAM(RTM_NEWADDR)]      = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
         [RTM_FAM(RTM_NEWROUTE)]     = NLMSG_LENGTH(sizeof(struct rtmsg)),
-        [RTM_FAM(RTM_NEWNEIGH)]     = NLMSG_LENGTH(sizeof(struct ndmsg)),
         [RTM_FAM(RTM_NEWRULE)]      = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
         [RTM_FAM(RTM_NEWQDISC)]     = NLMSG_LENGTH(sizeof(struct tcmsg)),
         [RTM_FAM(RTM_NEWTCLASS)]    = NLMSG_LENGTH(sizeof(struct tcmsg)),
@@ -121,7 +120,6 @@ static const int rta_max[RTM_NR_FAMILIES] =
         [RTM_FAM(RTM_NEWLINK)]      = IFLA_MAX,
         [RTM_FAM(RTM_NEWADDR)]      = IFA_MAX,
         [RTM_FAM(RTM_NEWROUTE)]     = RTA_MAX,
-        [RTM_FAM(RTM_NEWNEIGH)]     = NDA_MAX,
         [RTM_FAM(RTM_NEWRULE)]      = FRA_MAX,
         [RTM_FAM(RTM_NEWQDISC)]     = TCA_MAX,
         [RTM_FAM(RTM_NEWTCLASS)]    = TCA_MAX,