diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
index a5b2041600f9..a944e7dcb8b9 100644
--- a/net/smc/smc_inet.c
+++ b/net/smc/smc_inet.c
@@ -108,12 +108,23 @@ static struct inet_protosw smc_inet6_protosw = {
 };
 #endif /* CONFIG_IPV6 */
 
+static unsigned int smc_sync_mss(struct sock *sk, u32 pmtu)
+{
+	/* No need pass it through to clcsock, mss can always be set by
+	 * sock_create_kern or smc_setsockopt.
+	 */
+	return 0;
+}
+
 static int smc_inet_init_sock(struct sock *sk)
 {
 	struct net *net = sock_net(sk);
 
 	/* init common smc sock */
 	smc_sk_init(net, sk, IPPROTO_SMC);
+
+	inet_csk(sk)->icsk_sync_mss = smc_sync_mss;
+
 	/* create clcsock */
 	return smc_create_clcsk(net, sk, sk->sk_family);
 }