neighbor: Move neigh_update_ext_learned to core file

neigh_update_ext_learned has one caller in neighbour.c so does not need
to be defined in the header. Move it and in the process remove the
intialization of ndm_flags and just set it based on the flags check.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/neighbour.h

@@ -549,24 +549,6 @@ static inline void neigh_ha_snapshot(char *dst, const struct neighbour *n,
 	} while (read_seqretry(&n->ha_lock, seq));
 }
 
-static inline void neigh_update_ext_learned(struct neighbour *neigh, u32 flags,
-					    int *notify)
-{
-	u8 ndm_flags = 0;
-
-	if (!(flags & NEIGH_UPDATE_F_ADMIN))
-		return;
-
-	ndm_flags |= (flags & NEIGH_UPDATE_F_EXT_LEARNED) ? NTF_EXT_LEARNED : 0;
-	if ((neigh->flags ^ ndm_flags) & NTF_EXT_LEARNED) {
-		if (ndm_flags & NTF_EXT_LEARNED)
-			neigh->flags |= NTF_EXT_LEARNED;
-		else
-			neigh->flags &= ~NTF_EXT_LEARNED;
-		*notify = 1;
-	}
-}
-
 static inline void neigh_update_is_router(struct neighbour *neigh, u32 flags,
 					  int *notify)
 {

net/core/neighbour.c

@@ -153,6 +153,24 @@ static void neigh_update_gc_list(struct neighbour *n)
 	write_unlock_bh(&n->tbl->lock);
 }
 
+static void neigh_update_ext_learned(struct neighbour *neigh, u32 flags,
+				     int *notify)
+{
+	u8 ndm_flags;
+
+	if (!(flags & NEIGH_UPDATE_F_ADMIN))
+		return;
+
+	ndm_flags = (flags & NEIGH_UPDATE_F_EXT_LEARNED) ? NTF_EXT_LEARNED : 0;
+	if ((neigh->flags ^ ndm_flags) & NTF_EXT_LEARNED) {
+		if (ndm_flags & NTF_EXT_LEARNED)
+			neigh->flags |= NTF_EXT_LEARNED;
+		else
+			neigh->flags &= ~NTF_EXT_LEARNED;
+		*notify = 1;
+	}
+}
+
 static bool neigh_del(struct neighbour *n, struct neighbour __rcu **np,
 		      struct neigh_table *tbl)
 {