1 files changed, 5 insertions, 2 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f1377f2a0472..bb2ce74f6004 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2545,10 +2545,13 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
 
         case TCP_FASTOPEN:
                 if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE |
-                    TCPF_LISTEN)))
+                    TCPF_LISTEN))) {
+                        tcp_fastopen_init_key_once(true);
+
                         err = fastopen_init_queue(sk, val);
-                else
+                } else {
                         err = -EINVAL;
+                }
                 break;
         case TCP_TIMESTAMP:
                 if (!tp->repair)