diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 961b8eff95538c31b9b49422c1c19f63884ae4ae..823ea33715759fe6b3a0d7a23c99006e2de26b86 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -29,6 +29,7 @@
 #include <net/sock.h>
 #include <net/tcp.h>
 #include <net/smc.h>
+#include <asm/ioctls.h>
 
 #include "smc.h"
 #include "smc_clc.h"
@@ -1389,12 +1390,38 @@ static int smc_ioctl(struct socket *sock, unsigned int cmd,
 		     unsigned long arg)
 {
 	struct smc_sock *smc;
+	int answ;
 
 	smc = smc_sk(sock->sk);
-	if (smc->use_fallback)
+	if (smc->use_fallback) {
+		if (!smc->clcsock)
+			return -EBADF;
 		return smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg);
-	else
-		return sock_no_ioctl(sock, cmd, arg);
+	}
+	switch (cmd) {
+	case SIOCINQ: /* same as FIONREAD */
+		if (smc->sk.sk_state == SMC_LISTEN)
+			return -EINVAL;
+		answ = atomic_read(&smc->conn.bytes_to_rcv);
+		break;
+	case SIOCOUTQ:
+		/* output queue size (not send + not acked) */
+		if (smc->sk.sk_state == SMC_LISTEN)
+			return -EINVAL;
+		answ = smc->conn.sndbuf_size -
+					atomic_read(&smc->conn.sndbuf_space);
+		break;
+	case SIOCOUTQNSD:
+		/* output queue size (not send only) */
+		if (smc->sk.sk_state == SMC_LISTEN)
+			return -EINVAL;
+		answ = smc_tx_prepared_sends(&smc->conn);
+		break;
+	default:
+		return -ENOIOCTLCMD;
+	}
+
+	return put_user(answ, (int __user *)arg);
 }
 
 static ssize_t smc_sendpage(struct socket *sock, struct page *page,