net/tls: Fix return values to avoid ENOTSUPP

ENOTSUPP is not available in userspace, for example:

  setsockopt failed, 524, Unknown error 524
Signed-off-by: NValentin Vidic <vvidic@valentin-vidic.from.hr>
Acked-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/tls/tls_device.c

@@ -429,7 +429,7 @@ static int tls_push_data(struct sock *sk,
 
 	if (flags &
 	    ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_SENDPAGE_NOTLAST))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (unlikely(sk->sk_err))
 		return -sk->sk_err;
@@ -571,7 +571,7 @@ int tls_device_sendpage(struct sock *sk, struct page *page,
 	lock_sock(sk);
 
 	if (flags & MSG_OOB) {
-		rc = -ENOTSUPP;
+		rc = -EOPNOTSUPP;
 		goto out;
 	}
 
@@ -1023,7 +1023,7 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
 	}
 
 	if (!(netdev->features & NETIF_F_HW_TLS_TX)) {
-		rc = -ENOTSUPP;
+		rc = -EOPNOTSUPP;
 		goto release_netdev;
 	}
 
@@ -1098,7 +1098,7 @@ int tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx)
 	}
 
 	if (!(netdev->features & NETIF_F_HW_TLS_RX)) {
-		rc = -ENOTSUPP;
+		rc = -EOPNOTSUPP;
 		goto release_netdev;
 	}
 

net/tls/tls_main.c

@@ -487,7 +487,7 @@ static int do_tls_setsockopt_conf(struct sock *sk, char __user *optval,
 	/* check version */
 	if (crypto_info->version != TLS_1_2_VERSION &&
 	    crypto_info->version != TLS_1_3_VERSION) {
-		rc = -ENOTSUPP;
+		rc = -EINVAL;
 		goto err_crypto_info;
 	}
 
@@ -714,7 +714,7 @@ static int tls_init(struct sock *sk)
 	 * share the ulp context.
 	 */
 	if (sk->sk_state != TCP_ESTABLISHED)
-		return -ENOTSUPP;
+		return -ENOTCONN;
 
 	/* allocate tls context */
 	write_lock_bh(&sk->sk_callback_lock);

net/tls/tls_sw.c

@@ -905,7 +905,7 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	int ret = 0;
 
 	if (msg->msg_flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	mutex_lock(&tls_ctx->tx_lock);
 	lock_sock(sk);
@@ -1220,7 +1220,7 @@ int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
 	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
 		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY |
 		      MSG_NO_SHARED_FRAGS))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	return tls_sw_do_sendpage(sk, page, offset, size, flags);
 }
@@ -1233,7 +1233,7 @@ int tls_sw_sendpage(struct sock *sk, struct page *page,
 
 	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
 		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	mutex_lock(&tls_ctx->tx_lock);
 	lock_sock(sk);
@@ -1932,7 +1932,7 @@ ssize_t tls_sw_splice_read(struct socket *sock,  loff_t *ppos,
 
 		/* splice does not support reading control messages */
 		if (ctx->control != TLS_RECORD_TYPE_DATA) {
-			err = -ENOTSUPP;
+			err = -EINVAL;
 			goto splice_read_end;
 		}
 

tools/testing/selftests/net/tls.c

@@ -25,10 +25,6 @@
 #define TLS_PAYLOAD_MAX_LEN 16384
 #define SOL_TLS 282
 
-#ifndef ENOTSUPP
-#define ENOTSUPP 524
-#endif
-
 FIXTURE(tls_basic)
 {
 	int fd, cfd;
@@ -1205,11 +1201,11 @@ TEST(non_established) {
 	/* TLS ULP not supported */
 	if (errno == ENOENT)
 		return;
-	EXPECT_EQ(errno, ENOTSUPP);
+	EXPECT_EQ(errno, ENOTCONN);
 
 	ret = setsockopt(sfd, IPPROTO_TCP, TCP_ULP, "tls", sizeof("tls"));
 	EXPECT_EQ(ret, -1);
-	EXPECT_EQ(errno, ENOTSUPP);
+	EXPECT_EQ(errno, ENOTCONN);
 
 	ret = getsockname(sfd, &addr, &len);
 	ASSERT_EQ(ret, 0);