net: ipmr: adjust mroute.h style and drop extern

Remove extra spaces and tabs, adjust function definitions, remove an
unnecessary ifdef (already used below, just move code) and drop extern
from the functions.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/mroute.h

@@ -9,38 +9,28 @@
 #ifdef CONFIG_IP_MROUTE
 static inline int ip_mroute_opt(int opt)
 {
-	return (opt >= MRT_BASE) && (opt <= MRT_MAX);
+	return opt >= MRT_BASE && opt <= MRT_MAX;
 }
-#else
-static inline int ip_mroute_opt(int opt)
-{
-	return 0;
-}
-#endif
 
-#ifdef CONFIG_IP_MROUTE
-extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
-extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
-extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
-extern int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
-extern int ip_mr_init(void);
+int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
+int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
+int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
+int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
+int ip_mr_init(void);
 #else
-static inline
-int ip_mroute_setsockopt(struct sock *sock,
-			 int optname, char __user *optval, unsigned int optlen)
+static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
+				       char __user *optval, unsigned int optlen)
 {
 	return -ENOPROTOOPT;
 }
 
-static inline
-int ip_mroute_getsockopt(struct sock *sock,
-			 int optname, char __user *optval, int __user *optlen)
+static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
+				       char __user *optval, int __user *optlen)
 {
 	return -ENOPROTOOPT;
 }
 
-static inline
-int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
+static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
 {
 	return -ENOIOCTLCMD;
 }
@@ -49,6 +39,11 @@ static inline int ip_mr_init(void)
 {
 	return 0;
 }
+
+static inline int ip_mroute_opt(int opt)
+{
+	return 0;
+}
 #endif
 
 struct vif_device {
@@ -105,7 +100,7 @@ struct mfc_cache {
 #endif
 
 struct rtmsg;
-extern int ipmr_get_route(struct net *net, struct sk_buff *skb,
+int ipmr_get_route(struct net *net, struct sk_buff *skb,
 		   __be32 saddr, __be32 daddr,
 		   struct rtmsg *rtm, int nowait);
 #endif