Merge branch 'csock-seqpoacket-small-fixes'

Stefano Garzarella says:

====================
vsock: small fixes for seqpacket support

This series contains few patches to clean up a bit the code
of seqpacket recently merged in the net-next tree.

No functionality changes.
====================
Signed-off-by: NStefano Garzarella <sgarzare@redhat.com>

net/vmw_vsock/af_vsock.c

@@ -860,7 +860,7 @@ s64 vsock_stream_has_data(struct vsock_sock *vsk)
 }
 EXPORT_SYMBOL_GPL(vsock_stream_has_data);
 
-static s64 vsock_has_data(struct vsock_sock *vsk)
+static s64 vsock_connectible_has_data(struct vsock_sock *vsk)
 {
 	struct sock *sk = sk_vsock(vsk);
 
@@ -1866,10 +1866,11 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
 	return err;
 }
 
-static int vsock_wait_data(struct sock *sk, struct wait_queue_entry *wait,
-			   long timeout,
-			   struct vsock_transport_recv_notify_data *recv_data,
-			   size_t target)
+static int vsock_connectible_wait_data(struct sock *sk,
+				       struct wait_queue_entry *wait,
+				       long timeout,
+				       struct vsock_transport_recv_notify_data *recv_data,
+				       size_t target)
 {
 	const struct vsock_transport *transport;
 	struct vsock_sock *vsk;
@@ -1880,7 +1881,7 @@ static int vsock_wait_data(struct sock *sk, struct wait_queue_entry *wait,
 	err = 0;
 	transport = vsk->transport;
 
-	while ((data = vsock_has_data(vsk)) == 0) {
+	while ((data = vsock_connectible_has_data(vsk)) == 0) {
 		prepare_to_wait(sk_sleep(sk), wait, TASK_INTERRUPTIBLE);
 
 		if (sk->sk_err != 0 ||
@@ -1967,7 +1968,8 @@ static int __vsock_stream_recvmsg(struct sock *sk, struct msghdr *msg,
 	while (1) {
 		ssize_t read;
 
-		err = vsock_wait_data(sk, &wait, timeout, &recv_data, target);
+		err = vsock_connectible_wait_data(sk, &wait, timeout,
+						  &recv_data, target);
 		if (err <= 0)
 			break;
 
@@ -2022,7 +2024,7 @@ static int __vsock_seqpacket_recvmsg(struct sock *sk, struct msghdr *msg,
 
 	timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
 
-	err = vsock_wait_data(sk, &wait, timeout, NULL, 0);
+	err = vsock_connectible_wait_data(sk, &wait, timeout, NULL, 0);
 	if (err <= 0)
 		goto out;
 

net/vmw_vsock/virtio_transport_common.c

@@ -413,7 +413,6 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
 	struct virtio_vsock_pkt *pkt;
 	int dequeued_len = 0;
 	size_t user_buf_len = msg_data_left(msg);
-	bool copy_failed = false;
 	bool msg_ready = false;
 
 	spin_lock_bh(&vvs->rx_lock);
@@ -426,7 +425,7 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
 	while (!msg_ready) {
 		pkt = list_first_entry(&vvs->rx_queue, struct virtio_vsock_pkt, list);
 
-		if (!copy_failed) {
+		if (dequeued_len >= 0) {
 			size_t pkt_len;
 			size_t bytes_to_copy;
 
@@ -443,11 +442,9 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
 
 				err = memcpy_to_msg(msg, pkt->buf, bytes_to_copy);
 				if (err) {
-					/* Copy of message failed, set flag to skip
-					 * copy path for rest of fragments. Rest of
+					/* Copy of message failed. Rest of
 					 * fragments will be freed without copy.
 					 */
-					copy_failed = true;
 					dequeued_len = err;
 				} else {
 					user_buf_len -= bytes_to_copy;