1 files changed, 14 insertions, 1 deletions

diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 47eb67b08abd..2134e6d815bc 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -210,6 +210,18 @@ struct inet_sock {
 #define IP_CMSG_ORIGDSTADDR     BIT(6)
 #define IP_CMSG_CHECKSUM        BIT(7)
 
+/* SYNACK messages might be attached to request sockets.
+ * Some places want to reach the listener in this case.
+ */
+static inline struct sock *skb_to_full_sk(const struct sk_buff *skb)
+{
+        struct sock *sk = skb->sk;
+
+        if (sk && sk->sk_state == TCP_NEW_SYN_RECV)
+                sk = inet_reqsk(sk)->rsk_listener;
+        return sk;
+}
+
 static inline struct inet_sock *inet_sk(const struct sock *sk)
 {
         return (struct inet_sock *)sk;
@@ -245,7 +257,8 @@ static inline unsigned int __inet_ehashfn(const __be32 laddr,
 }
 
 struct request_sock *inet_reqsk_alloc(const struct request_sock_ops *ops,
-                                      struct sock *sk_listener);
+                                      struct sock *sk_listener,
+                                      bool attach_listener);
 
 static inline __u8 inet_sk_flowi_flags(const struct sock *sk)
 {