--- zzzz-none-000/linux-3.10.107/net/dccp/feat.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/dccp/feat.h	2021-02-04 17:41:59.000000000 +0000
@@ -107,13 +107,13 @@
 extern int	     sysctl_dccp_rx_ccid;
 extern int	     sysctl_dccp_tx_ccid;
 
-extern int  dccp_feat_init(struct sock *sk);
-extern void dccp_feat_initialise_sysctls(void);
-extern int  dccp_feat_register_sp(struct sock *sk, u8 feat, u8 is_local,
-				  u8 const *list, u8 len);
-extern int  dccp_feat_parse_options(struct sock *, struct dccp_request_sock *,
-				    u8 mand, u8 opt, u8 feat, u8 *val, u8 len);
-extern int  dccp_feat_clone_list(struct list_head const *, struct list_head *);
+int dccp_feat_init(struct sock *sk);
+void dccp_feat_initialise_sysctls(void);
+int dccp_feat_register_sp(struct sock *sk, u8 feat, u8 is_local,
+			  u8 const *list, u8 len);
+int dccp_feat_parse_options(struct sock *, struct dccp_request_sock *,
+			    u8 mand, u8 opt, u8 feat, u8 *val, u8 len);
+int dccp_feat_clone_list(struct list_head const *, struct list_head *);
 
 /*
  * Encoding variable-length options and their maximum length.
@@ -127,11 +127,11 @@
  */
 #define DCCP_OPTVAL_MAXLEN	6
 
-extern void dccp_encode_value_var(const u64 value, u8 *to, const u8 len);
-extern u64  dccp_decode_value_var(const u8 *bf, const u8 len);
-extern u64  dccp_feat_nn_get(struct sock *sk, u8 feat);
+void dccp_encode_value_var(const u64 value, u8 *to, const u8 len);
+u64 dccp_decode_value_var(const u8 *bf, const u8 len);
+u64 dccp_feat_nn_get(struct sock *sk, u8 feat);
 
-extern int  dccp_insert_option_mandatory(struct sk_buff *skb);
-extern int  dccp_insert_fn_opt(struct sk_buff *skb, u8 type, u8 feat,
-			       u8 *val, u8 len, bool repeat_first);
+int dccp_insert_option_mandatory(struct sk_buff *skb);
+int dccp_insert_fn_opt(struct sk_buff *skb, u8 type, u8 feat, u8 *val, u8 len,
+		       bool repeat_first);
 #endif /* _DCCP_FEAT_H */