ip*.h: Remove extern from function prototypes

There are a mix of function prototypes with and without extern
in the kernel sources.  Standardize on not using extern for
function prototypes.

Function prototypes don't need to be written with extern.
extern is assumed by the compiler.  Its use is as unnecessary as
using auto to declare automatic/local variables in a block.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 43 insertions, 55 deletions

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index f525e7038cca..02e220dc4cf5 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -51,7 +51,7 @@ static inline unsigned int rt6_flags2srcprefs(int flags)
         return (flags >> 3) & 7;
 }
 
-extern void rt6_bind_peer(struct rt6_info *rt, int create);
+void rt6_bind_peer(struct rt6_info *rt, int create);
 
 static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)
 {
@@ -72,70 +72,58 @@ static inline struct inet_peer *rt6_get_peer_create(struct rt6_info *rt)
         return __rt6_get_peer(rt, 1);
 }
 
-extern void                     ip6_route_input(struct sk_buff *skb);
+void ip6_route_input(struct sk_buff *skb);
 
-extern struct dst_entry *       ip6_route_output(struct net *net,
-                                                 const struct sock *sk,
-                                                 struct flowi6 *fl6);
-extern struct dst_entry *       ip6_route_lookup(struct net *net,
-                                                 struct flowi6 *fl6, int flags);
+struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk,
+                                   struct flowi6 *fl6);
+struct dst_entry *ip6_route_lookup(struct net *net, struct flowi6 *fl6,
+                                   int flags);
 
-extern int                      ip6_route_init(void);
-extern void                     ip6_route_cleanup(void);
+int ip6_route_init(void);
+void ip6_route_cleanup(void);
 
-extern int                      ipv6_route_ioctl(struct net *net,
-                                                 unsigned int cmd,
-                                                 void __user *arg);
+int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg);
 
-extern int                      ip6_route_add(struct fib6_config *cfg);
-extern int                      ip6_ins_rt(struct rt6_info *);
-extern int                      ip6_del_rt(struct rt6_info *);
+int ip6_route_add(struct fib6_config *cfg);
+int ip6_ins_rt(struct rt6_info *);
+int ip6_del_rt(struct rt6_info *);
 
-extern int                      ip6_route_get_saddr(struct net *net,
-                                                    struct rt6_info *rt,
-                                                    const struct in6_addr *daddr,
-                                                    unsigned int prefs,
-                                                    struct in6_addr *saddr);
+int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
+                        const struct in6_addr *daddr, unsigned int prefs,
+                        struct in6_addr *saddr);
 
-extern struct rt6_info          *rt6_lookup(struct net *net,
-                                            const struct in6_addr *daddr,
-                                            const struct in6_addr *saddr,
-                                            int oif, int flags);
+struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
+                            const struct in6_addr *saddr, int oif, int flags);
 
-extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
-                                         struct flowi6 *fl6);
-extern int icmp6_dst_gc(void);
+struct dst_entry *icmp6_dst_alloc(struct net_device *dev, struct flowi6 *fl6);
+int icmp6_dst_gc(void);
 
-extern void fib6_force_start_gc(struct net *net);
+void fib6_force_start_gc(struct net *net);
 
-extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
-                                           const struct in6_addr *addr,
-                                           bool anycast);
+struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
+                                    const struct in6_addr *addr, bool anycast);
 
 /*
  *      support functions for ND
  *
  */
-extern struct rt6_info *        rt6_get_dflt_router(const struct in6_addr *addr,
-                                                    struct net_device *dev);
-extern struct rt6_info *        rt6_add_dflt_router(const struct in6_addr *gwaddr,
-                                                    struct net_device *dev,
-                                                    unsigned int pref);
-
-extern void                     rt6_purge_dflt_routers(struct net *net);
-
-extern int                      rt6_route_rcv(struct net_device *dev,
-                                              u8 *opt, int len,
-                                              const struct in6_addr *gwaddr);
-
-extern void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu,
-                            int oif, u32 mark);
-extern void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk,
-                               __be32 mtu);
-extern void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark);
-extern void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
-                                   u32 mark);
-extern void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk);
+struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr,
+                                     struct net_device *dev);
+struct rt6_info *rt6_add_dflt_router(const struct in6_addr *gwaddr,
+                                     struct net_device *dev, unsigned int pref);
+
+void rt6_purge_dflt_routers(struct net *net);
+
+int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
+                  const struct in6_addr *gwaddr);
+
+void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, int oif,
+                     u32 mark);
+void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, __be32 mtu);
+void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark);
+void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
+                            u32 mark);
+void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk);
 
 struct netlink_callback;
 
@@ -145,10 +133,10 @@ struct rt6_rtnl_dump_arg {
         struct net *net;
 };
 
-extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
-extern void rt6_ifdown(struct net *net, struct net_device *dev);
-extern void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
-extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
+int rt6_dump_route(struct rt6_info *rt, void *p_arg);
+void rt6_ifdown(struct net *net, struct net_device *dev);
+void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
+void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
 
 
 /*