extern unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu);
 
 extern const char *dccp_packet_name(const int type);
-extern const char *dccp_state_name(const int state);
 
 extern void dccp_set_state(struct sock *sk, const int state);
 extern void dccp_done(struct sock *sk);
 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_timestamp(struct sk_buff *skb);
 extern int dccp_insert_option(struct sk_buff *skb, unsigned char option,
                              const void *value, unsigned char len);
 
 
                                  0, list, len);
 }
 
-/* Analogous to dccp_feat_register_sp(), but for non-negotiable values */
-int dccp_feat_register_nn(struct sock *sk, u8 feat, u64 val)
-{
-       /* any changes must be registered before establishing the connection */
-       if (sk->sk_state != DCCP_CLOSED)
-               return -EISCONN;
-       if (dccp_feat_type(feat) != FEAT_NN)
-               return -EINVAL;
-       return __feat_register_nn(&dccp_sk(sk)->dccps_featneg, feat, 0, val);
-}
 
 /*
  *     Tracking features whose value depend on the choice of CCID
 
 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_register_nn(struct sock *sk, u8 feat, u64 val);
 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 *);
 
 
 EXPORT_SYMBOL_GPL(dccp_insert_option_elapsed_time);
 
-int dccp_insert_option_timestamp(struct sk_buff *skb)
+static int dccp_insert_option_timestamp(struct sk_buff *skb)
 {
        __be32 now = htonl(dccp_timestamp());
        /* yes this will overflow but that is the point as we want a
        return dccp_insert_option(skb, DCCPO_TIMESTAMP, &now, sizeof(now));
 }
 
-EXPORT_SYMBOL_GPL(dccp_insert_option_timestamp);
-
 static int dccp_insert_option_timestamp_echo(struct dccp_sock *dp,
                                             struct dccp_request_sock *dreq,
                                             struct sk_buff *skb)
 
 /* the maximum queue length for tx in packets. 0 is no limit */
 int sysctl_dccp_tx_qlen __read_mostly = 5;
 
+#ifdef CONFIG_IP_DCCP_DEBUG
+static const char *dccp_state_name(const int state)
+{
+       static const char *const dccp_state_names[] = {
+       [DCCP_OPEN]             = "OPEN",
+       [DCCP_REQUESTING]       = "REQUESTING",
+       [DCCP_PARTOPEN]         = "PARTOPEN",
+       [DCCP_LISTEN]           = "LISTEN",
+       [DCCP_RESPOND]          = "RESPOND",
+       [DCCP_CLOSING]          = "CLOSING",
+       [DCCP_ACTIVE_CLOSEREQ]  = "CLOSEREQ",
+       [DCCP_PASSIVE_CLOSE]    = "PASSIVE_CLOSE",
+       [DCCP_PASSIVE_CLOSEREQ] = "PASSIVE_CLOSEREQ",
+       [DCCP_TIME_WAIT]        = "TIME_WAIT",
+       [DCCP_CLOSED]           = "CLOSED",
+       };
+
+       if (state >= DCCP_MAX_STATES)
+               return "INVALID STATE!";
+       else
+               return dccp_state_names[state];
+}
+#endif
+
 void dccp_set_state(struct sock *sk, const int state)
 {
        const int oldstate = sk->sk_state;
 
 EXPORT_SYMBOL_GPL(dccp_packet_name);
 
-const char *dccp_state_name(const int state)
-{
-       static const char *const dccp_state_names[] = {
-       [DCCP_OPEN]             = "OPEN",
-       [DCCP_REQUESTING]       = "REQUESTING",
-       [DCCP_PARTOPEN]         = "PARTOPEN",
-       [DCCP_LISTEN]           = "LISTEN",
-       [DCCP_RESPOND]          = "RESPOND",
-       [DCCP_CLOSING]          = "CLOSING",
-       [DCCP_ACTIVE_CLOSEREQ]  = "CLOSEREQ",
-       [DCCP_PASSIVE_CLOSE]    = "PASSIVE_CLOSE",
-       [DCCP_PASSIVE_CLOSEREQ] = "PASSIVE_CLOSEREQ",
-       [DCCP_TIME_WAIT]        = "TIME_WAIT",
-       [DCCP_CLOSED]           = "CLOSED",
-       };
-
-       if (state >= DCCP_MAX_STATES)
-               return "INVALID STATE!";
-       else
-               return dccp_state_names[state];
-}
-
-EXPORT_SYMBOL_GPL(dccp_state_name);
-
 int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
 {
        struct dccp_sock *dp = dccp_sk(sk);