xfrm4_tunnel.c hasn't use any macro or function declared in mutex.h and ip.h
Thus, these files can be removed from xfrm4_tunnel.c safely without affecting
the compilation of the net module.
Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
#include <linux/skbuff.h>
#include <linux/module.h>
-#include <linux/mutex.h>
#include <net/xfrm.h>
-#include <net/ip.h>
#include <net/protocol.h>
static int ipip_output(struct xfrm_state *x, struct sk_buff *skb)