[NET]: Missing header includes and forward declarations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@redhat.com>

include/linux/netlink.h

@@ -99,6 +99,7 @@ enum {
 #ifdef __KERNEL__
 
 #include <linux/capability.h>
+#include <linux/skbuff.h>
 
 struct netlink_skb_parms
 {

include/net/ip6_fib.h

@@ -20,6 +20,7 @@
 #include <net/dst.h>
 #include <net/flow.h>
 #include <linux/rtnetlink.h>
+#include <linux/spinlock.h>
 
 struct rt6_info;
 

include/net/ip6_route.h

@@ -11,8 +11,10 @@
 
 #include <net/flow.h>
 #include <net/ip6_fib.h>
+#include <net/sock.h>
 #include <linux/tcp.h>
 #include <linux/ip.h>
+#include <linux/ipv6.h>
 
 struct pol_chain {
 	int			type;

include/net/neighbour.h

@@ -45,6 +45,7 @@
 
 #include <asm/atomic.h>
 #include <linux/skbuff.h>
+#include <linux/netdevice.h>
 
 #include <linux/err.h>
 #include <linux/sysctl.h>
@@ -53,6 +54,8 @@
 #define NUD_VALID	(NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE|NUD_PROBE|NUD_STALE|NUD_DELAY)
 #define NUD_CONNECTED	(NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE)
 
+struct neighbour;
+
 struct neigh_parms
 {
 	struct neigh_parms *next;