diff --git a/include/net/tcp.h b/include/net/tcp.h
index 17d7c6a..f5d6ca4 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1114,6 +1114,9 @@
 	ireq->ir_num = ntohs(tcp_hdr(skb)->dest);
 }
 
+extern void tcp_openreq_init_rwin(struct request_sock *req,
+				  struct sock *sk, struct dst_entry *dst);
+
 void tcp_enter_memory_pressure(struct sock *sk);
 
 static inline int keepalive_intvl_when(const struct tcp_sock *tp)
@@ -1323,13 +1326,10 @@
 
 extern struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
 int tcp_fastopen_reset_cipher(void *key, unsigned int len);
-int tcp_fastopen_create_child(struct sock *sk,
-			      struct sk_buff *skb,
-			      struct sk_buff *skb_synack,
-			      struct request_sock *req);
-bool tcp_fastopen_check(struct sock *sk, struct sk_buff *skb,
-			struct request_sock *req,
-			struct tcp_fastopen_cookie *foc);
+bool tcp_try_fastopen(struct sock *sk, struct sk_buff *skb,
+		      struct request_sock *req,
+		      struct tcp_fastopen_cookie *foc,
+		      struct dst_entry *dst);
 void tcp_fastopen_init_key_once(bool publish);
 #define TCP_FASTOPEN_KEY_LENGTH 16