diff --git a/include/net/tcp.h b/include/net/tcp.h
index 2e7dce6526b6f7283756efdccbd1812120289d9f..e34bec322f2efad006b5c8d6dcc0bde429a7bcdc 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1941,6 +1941,11 @@ struct tcp_request_sock_ops {
 			   enum tcp_synack_type synack_type);
 };
 
+extern const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops;
+#if IS_ENABLED(CONFIG_IPV6)
+extern const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops;
+#endif
+
 #ifdef CONFIG_SYN_COOKIES
 static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops,
 					 const struct sock *sk, struct sk_buff *skb,
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 8b2fdfc2d99929b15c915182f00259c86acb300b..469a00c1ea4b94989ce89fdabe83d92d3a79cb89 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -337,6 +337,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
 
 	ireq = inet_rsk(req);
 	treq = tcp_rsk(req);
+	treq->af_specific	= &tcp_request_sock_ipv4_ops;
 	treq->rcv_isn		= ntohl(th->seq) - 1;
 	treq->snt_isn		= cookie;
 	treq->ts_off		= 0;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f1ad62ad5c742261e00f9833d85ae5d64fa623ef..d57766f32c1e111abc1c2d51522b36b093ca52cd 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1372,7 +1372,7 @@ struct request_sock_ops tcp_request_sock_ops __read_mostly = {
 	.syn_ack_timeout =	tcp_syn_ack_timeout,
 };
 
-static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
+const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
 	.mss_clamp	=	TCP_MSS_DEFAULT,
 #ifdef CONFIG_TCP_MD5SIG
 	.req_md5_lookup	=	tcp_v4_md5_lookup,
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index 62a6148a305b335d5cd22c17247ad7677f2dbb9e..c1e21f55ac52243803743413bca9f85ab2f8fa20 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -181,6 +181,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 
 	ireq = inet_rsk(req);
 	treq = tcp_rsk(req);
+	treq->af_specific = &tcp_request_sock_ipv6_ops;
 	treq->tfo_listener = false;
 
 	if (security_inet_conn_request(sk, skb, req))
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index e8d206725cb75538d935b7168d7da3087505a986..de29751755036664558bffbb1abc7e678920de14 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -789,7 +789,7 @@ struct request_sock_ops tcp6_request_sock_ops __read_mostly = {
 	.syn_ack_timeout =	tcp_syn_ack_timeout,
 };
 
-static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
+const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
 	.mss_clamp	=	IPV6_MIN_MTU - sizeof(struct tcphdr) -
 				sizeof(struct ipv6hdr),
 #ifdef CONFIG_TCP_MD5SIG