3 files changed, 14 insertions, 1 deletions
diff --git a/include/net/mptcp.h b/include/net/mptcp.h
index 02158c257bd4..3525d2822abe 100644
--- a/include/net/mptcp.h
+++ b/include/net/mptcp.h
@@ -58,6 +58,7 @@ struct mptcp_out_options {
 };
 
 #ifdef CONFIG_MPTCP
+extern struct request_sock_ops mptcp_subflow_request_sock_ops;
 
 void mptcp_init(void);
 
@@ -130,6 +131,9 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to,
 }
 
 void mptcp_seq_show(struct seq_file *seq);
+int mptcp_subflow_init_cookie_req(struct request_sock *req,
+				  const struct sock *sk_listener,
+				  struct sk_buff *skb);
 #else
 
 static inline void mptcp_init(void)
@@ -199,6 +203,13 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to,
 
 static inline void mptcp_space(const struct sock *ssk, int *s, int *fs) { }
 static inline void mptcp_seq_show(struct seq_file *seq) { }
+
+static inline int mptcp_subflow_init_cookie_req(struct request_sock *req,
+						const struct sock *sk_listener,
+						struct sk_buff *skb)
+{
+	return 0; /* TCP fallback */
+}
 #endif /* CONFIG_MPTCP */
 
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index cf8b33213bbc..b2eb8b4ba697 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -54,7 +54,7 @@ struct request_sock {
 	struct request_sock		*dl_next;
 	u16				mss;
 	u8				num_retrans; /* number of retransmits */
-	u8				cookie_ts:1; /* syncookie: encode tcpopts in timestamp */
+	u8				syncookie:1; /* syncookie: encode tcpopts in timestamp */
 	u8				num_timeout:7; /* number of timeouts */
 	u32				ts_recent;
 	struct timer_list		rsk_timer;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e0c35d56091f..dbf5c791a6eb 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -469,6 +469,8 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
 int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th,
 		      u32 cookie);
 struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb);
+struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops,
+					    struct sock *sk, struct sk_buff *skb);
 #ifdef CONFIG_SYN_COOKIES
 
 /* Syncookies use a monotonic timer which increments every 60 seconds.