net: dccp: 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, 90 insertions, 96 deletions

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 708e75b..3094878 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -53,7 +53,7 @@ extern struct inet_hashinfo dccp_hashinfo;
 
 extern struct percpu_counter dccp_orphan_count;
 
-extern void dccp_time_wait(struct sock *sk, int state, int timeo);
+void dccp_time_wait(struct sock *sk, int state, int timeo);
 
 /*
  *  Set safe upper bounds for header and option length. Since Data Offset is 8
@@ -224,114 +224,108 @@ static inline void dccp_csum_outgoing(struct sk_buff *skb)
 	skb->csum = skb_checksum(skb, 0, (cov > skb->len)? skb->len : cov, 0);
 }
 
-extern void dccp_v4_send_check(struct sock *sk, struct sk_buff *skb);
+void dccp_v4_send_check(struct sock *sk, struct sk_buff *skb);
 
-extern int  dccp_retransmit_skb(struct sock *sk);
+int dccp_retransmit_skb(struct sock *sk);
 
-extern void dccp_send_ack(struct sock *sk);
-extern void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
-				struct request_sock *rsk);
+void dccp_send_ack(struct sock *sk);
+void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+			 struct request_sock *rsk);
 
-extern void dccp_send_sync(struct sock *sk, const u64 seq,
-			   const enum dccp_pkt_type pkt_type);
+void dccp_send_sync(struct sock *sk, const u64 seq,
+		    const enum dccp_pkt_type pkt_type);
 
 /*
  * TX Packet Dequeueing Interface
  */
-extern void		dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb);
-extern bool		dccp_qpolicy_full(struct sock *sk);
-extern void		dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb);
-extern struct sk_buff	*dccp_qpolicy_top(struct sock *sk);
-extern struct sk_buff	*dccp_qpolicy_pop(struct sock *sk);
-extern bool		dccp_qpolicy_param_ok(struct sock *sk, __be32 param);
+void dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb);
+bool dccp_qpolicy_full(struct sock *sk);
+void dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb);
+struct sk_buff *dccp_qpolicy_top(struct sock *sk);
+struct sk_buff *dccp_qpolicy_pop(struct sock *sk);
+bool dccp_qpolicy_param_ok(struct sock *sk, __be32 param);
 
 /*
  * TX Packet Output and TX Timers
  */
-extern void   dccp_write_xmit(struct sock *sk);
-extern void   dccp_write_space(struct sock *sk);
-extern void   dccp_flush_write_queue(struct sock *sk, long *time_budget);
+void dccp_write_xmit(struct sock *sk);
+void dccp_write_space(struct sock *sk);
+void dccp_flush_write_queue(struct sock *sk, long *time_budget);
 
-extern void dccp_init_xmit_timers(struct sock *sk);
+void dccp_init_xmit_timers(struct sock *sk);
 static inline void dccp_clear_xmit_timers(struct sock *sk)
 {
 	inet_csk_clear_xmit_timers(sk);
 }
 
-extern unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu);
+unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu);
 
-extern const char *dccp_packet_name(const int type);
+const char *dccp_packet_name(const int type);
 
-extern void dccp_set_state(struct sock *sk, const int state);
-extern void dccp_done(struct sock *sk);
+void dccp_set_state(struct sock *sk, const int state);
+void dccp_done(struct sock *sk);
 
-extern int  dccp_reqsk_init(struct request_sock *rq, struct dccp_sock const *dp,
-			    struct sk_buff const *skb);
+int dccp_reqsk_init(struct request_sock *rq, struct dccp_sock const *dp,
+		    struct sk_buff const *skb);
 
-extern int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb);
+int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb);
 
-extern struct sock *dccp_create_openreq_child(struct sock *sk,
-					      const struct request_sock *req,
-					      const struct sk_buff *skb);
+struct sock *dccp_create_openreq_child(struct sock *sk,
+				       const struct request_sock *req,
+				       const struct sk_buff *skb);
 
-extern int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb);
+int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb);
 
-extern struct sock *dccp_v4_request_recv_sock(struct sock *sk,
-					      struct sk_buff *skb,
-					      struct request_sock *req,
-					      struct dst_entry *dst);
-extern struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb,
-				   struct request_sock *req,
-				   struct request_sock **prev);
+struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
+				       struct request_sock *req,
+				       struct dst_entry *dst);
+struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb,
+			    struct request_sock *req,
+			    struct request_sock **prev);
 
-extern int dccp_child_process(struct sock *parent, struct sock *child,
-			      struct sk_buff *skb);
-extern int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
-				  struct dccp_hdr *dh, unsigned int len);
-extern int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
-				const struct dccp_hdr *dh, const unsigned int len);
+int dccp_child_process(struct sock *parent, struct sock *child,
+		       struct sk_buff *skb);
+int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
+			   struct dccp_hdr *dh, unsigned int len);
+int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
+			 const struct dccp_hdr *dh, const unsigned int len);
 
-extern int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized);
-extern void dccp_destroy_sock(struct sock *sk);
+int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized);
+void dccp_destroy_sock(struct sock *sk);
 
-extern void		dccp_close(struct sock *sk, long timeout);
-extern struct sk_buff	*dccp_make_response(struct sock *sk,
-					    struct dst_entry *dst,
-					    struct request_sock *req);
+void dccp_close(struct sock *sk, long timeout);
+struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
+				   struct request_sock *req);
 
-extern int	   dccp_connect(struct sock *sk);
-extern int	   dccp_disconnect(struct sock *sk, int flags);
-extern int	   dccp_getsockopt(struct sock *sk, int level, int optname,
-				   char __user *optval, int __user *optlen);
-extern int	   dccp_setsockopt(struct sock *sk, int level, int optname,
-				   char __user *optval, unsigned int optlen);
+int dccp_connect(struct sock *sk);
+int dccp_disconnect(struct sock *sk, int flags);
+int dccp_getsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int __user *optlen);
+int dccp_setsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, unsigned int optlen);
 #ifdef CONFIG_COMPAT
-extern int	   compat_dccp_getsockopt(struct sock *sk,
-				int level, int optname,
-				char __user *optval, int __user *optlen);
-extern int	   compat_dccp_setsockopt(struct sock *sk,
-				int level, int optname,
-				char __user *optval, unsigned int optlen);
+int compat_dccp_getsockopt(struct sock *sk, int level, int optname,
+			   char __user *optval, int __user *optlen);
+int compat_dccp_setsockopt(struct sock *sk, int level, int optname,
+			   char __user *optval, unsigned int optlen);
 #endif
-extern int	   dccp_ioctl(struct sock *sk, int cmd, unsigned long arg);
-extern int	   dccp_sendmsg(struct kiocb *iocb, struct sock *sk,
-				struct msghdr *msg, size_t size);
-extern int	   dccp_recvmsg(struct kiocb *iocb, struct sock *sk,
-				struct msghdr *msg, size_t len, int nonblock,
-				int flags, int *addr_len);
-extern void	   dccp_shutdown(struct sock *sk, int how);
-extern int	   inet_dccp_listen(struct socket *sock, int backlog);
-extern unsigned int dccp_poll(struct file *file, struct socket *sock,
-			     poll_table *wait);
-extern int	   dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
-				   int addr_len);
-
-extern struct sk_buff *dccp_ctl_make_reset(struct sock *sk,
-					   struct sk_buff *skb);
-extern int	   dccp_send_reset(struct sock *sk, enum dccp_reset_codes code);
-extern void	   dccp_send_close(struct sock *sk, const int active);
-extern int	   dccp_invalid_packet(struct sk_buff *skb);
-extern u32	   dccp_sample_rtt(struct sock *sk, long delta);
+int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg);
+int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+		 size_t size);
+int dccp_recvmsg(struct kiocb *iocb, struct sock *sk,
+		 struct msghdr *msg, size_t len, int nonblock, int flags,
+		 int *addr_len);
+void dccp_shutdown(struct sock *sk, int how);
+int inet_dccp_listen(struct socket *sock, int backlog);
+unsigned int dccp_poll(struct file *file, struct socket *sock,
+		       poll_table *wait);
+int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+
+struct sk_buff *dccp_ctl_make_reset(struct sock *sk, struct sk_buff *skb);
+int dccp_send_reset(struct sock *sk, enum dccp_reset_codes code);
+void dccp_send_close(struct sock *sk, const int active);
+int dccp_invalid_packet(struct sk_buff *skb);
+u32 dccp_sample_rtt(struct sock *sk, long delta);
 
 static inline int dccp_bad_service_code(const struct sock *sk,
 					const __be32 service)
@@ -475,25 +469,25 @@ static inline int dccp_ack_pending(const struct sock *sk)
 	return dccp_ackvec_pending(sk) || inet_csk_ack_scheduled(sk);
 }
 
-extern int  dccp_feat_signal_nn_change(struct sock *sk, u8 feat, u64 nn_val);
-extern int  dccp_feat_finalise_settings(struct dccp_sock *dp);
-extern int  dccp_feat_server_ccid_dependencies(struct dccp_request_sock *dreq);
-extern int  dccp_feat_insert_opts(struct dccp_sock*, struct dccp_request_sock*,
-				  struct sk_buff *skb);
-extern int  dccp_feat_activate_values(struct sock *sk, struct list_head *fn);
-extern void dccp_feat_list_purge(struct list_head *fn_list);
-
-extern int dccp_insert_options(struct sock *sk, struct sk_buff *skb);
-extern int dccp_insert_options_rsk(struct dccp_request_sock*, struct sk_buff*);
-extern int dccp_insert_option_elapsed_time(struct sk_buff *skb, u32 elapsed);
-extern u32 dccp_timestamp(void);
-extern void dccp_timestamping_init(void);
-extern int dccp_insert_option(struct sk_buff *skb, unsigned char option,
-			      const void *value, unsigned char len);
+int dccp_feat_signal_nn_change(struct sock *sk, u8 feat, u64 nn_val);
+int dccp_feat_finalise_settings(struct dccp_sock *dp);
+int dccp_feat_server_ccid_dependencies(struct dccp_request_sock *dreq);
+int dccp_feat_insert_opts(struct dccp_sock*, struct dccp_request_sock*,
+			  struct sk_buff *skb);
+int dccp_feat_activate_values(struct sock *sk, struct list_head *fn);
+void dccp_feat_list_purge(struct list_head *fn_list);
+
+int dccp_insert_options(struct sock *sk, struct sk_buff *skb);
+int dccp_insert_options_rsk(struct dccp_request_sock *, struct sk_buff *);
+int dccp_insert_option_elapsed_time(struct sk_buff *skb, u32 elapsed);
+u32 dccp_timestamp(void);
+void dccp_timestamping_init(void);
+int dccp_insert_option(struct sk_buff *skb, unsigned char option,
+		       const void *value, unsigned char len);
 
 #ifdef CONFIG_SYSCTL
-extern int dccp_sysctl_init(void);
-extern void dccp_sysctl_exit(void);
+int dccp_sysctl_init(void);
+void dccp_sysctl_exit(void);
 #else
 static inline int dccp_sysctl_init(void)
 {