Linux-libre 4.6.2-gnu

2 files changed, 91 insertions, 94 deletions

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index bbe65dcb9..b5f1221f4 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1209,10 +1209,14 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
 
 		if (signal_pending(current)) {
 			err = sock_intr_errno(timeout);
-			goto out_wait_error;
+			sk->sk_state = SS_UNCONNECTED;
+			sock->state = SS_UNCONNECTED;
+			goto out_wait;
 		} else if (timeout == 0) {
 			err = -ETIMEDOUT;
-			goto out_wait_error;
+			sk->sk_state = SS_UNCONNECTED;
+			sock->state = SS_UNCONNECTED;
+			goto out_wait;
 		}
 
 		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
@@ -1220,20 +1224,17 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
 
 	if (sk->sk_err) {
 		err = -sk->sk_err;
-		goto out_wait_error;
-	} else
+		sk->sk_state = SS_UNCONNECTED;
+		sock->state = SS_UNCONNECTED;
+	} else {
 		err = 0;
+	}
 
 out_wait:
 	finish_wait(sk_sleep(sk), &wait);
 out:
 	release_sock(sk);
 	return err;
-
-out_wait_error:
-	sk->sk_state = SS_UNCONNECTED;
-	sock->state = SS_UNCONNECTED;
-	goto out_wait;
 }
 
 static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
@@ -1270,18 +1271,20 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
 	       listener->sk_err == 0) {
 		release_sock(listener);
 		timeout = schedule_timeout(timeout);
+		finish_wait(sk_sleep(listener), &wait);
 		lock_sock(listener);
 
 		if (signal_pending(current)) {
 			err = sock_intr_errno(timeout);
-			goto out_wait;
+			goto out;
 		} else if (timeout == 0) {
 			err = -EAGAIN;
-			goto out_wait;
+			goto out;
 		}
 
 		prepare_to_wait(sk_sleep(listener), &wait, TASK_INTERRUPTIBLE);
 	}
+	finish_wait(sk_sleep(listener), &wait);
 
 	if (listener->sk_err)
 		err = -listener->sk_err;
@@ -1301,19 +1304,15 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags)
 		 */
 		if (err) {
 			vconnected->rejected = true;
-			release_sock(connected);
-			sock_put(connected);
-			goto out_wait;
+		} else {
+			newsock->state = SS_CONNECTED;
+			sock_graft(connected, newsock);
 		}
 
-		newsock->state = SS_CONNECTED;
-		sock_graft(connected, newsock);
 		release_sock(connected);
 		sock_put(connected);
 	}
 
-out_wait:
-	finish_wait(sk_sleep(listener), &wait);
 out:
 	release_sock(listener);
 	return err;
@@ -1557,9 +1556,11 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
 	if (err < 0)
 		goto out;
 
+
 	while (total_written < len) {
 		ssize_t written;
 
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 		while (vsock_stream_has_space(vsk) == 0 &&
 		       sk->sk_err == 0 &&
 		       !(sk->sk_shutdown & SEND_SHUTDOWN) &&
@@ -1568,27 +1569,33 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
 			/* Don't wait for non-blocking sockets. */
 			if (timeout == 0) {
 				err = -EAGAIN;
-				goto out_wait;
+				finish_wait(sk_sleep(sk), &wait);
+				goto out_err;
 			}
 
 			err = transport->notify_send_pre_block(vsk, &send_data);
-			if (err < 0)
-				goto out_wait;
+			if (err < 0) {
+				finish_wait(sk_sleep(sk), &wait);
+				goto out_err;
+			}
 
 			release_sock(sk);
-			prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 			timeout = schedule_timeout(timeout);
-			finish_wait(sk_sleep(sk), &wait);
 			lock_sock(sk);
 			if (signal_pending(current)) {
 				err = sock_intr_errno(timeout);
-				goto out_wait;
+				finish_wait(sk_sleep(sk), &wait);
+				goto out_err;
 			} else if (timeout == 0) {
 				err = -EAGAIN;
-				goto out_wait;
+				finish_wait(sk_sleep(sk), &wait);
+				goto out_err;
 			}
 
+			prepare_to_wait(sk_sleep(sk), &wait,
+					TASK_INTERRUPTIBLE);
 		}
+		finish_wait(sk_sleep(sk), &wait);
 
 		/* These checks occur both as part of and after the loop
 		 * conditional since we need to check before and after
@@ -1596,16 +1603,16 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
 		 */
 		if (sk->sk_err) {
 			err = -sk->sk_err;
-			goto out_wait;
+			goto out_err;
 		} else if ((sk->sk_shutdown & SEND_SHUTDOWN) ||
 			   (vsk->peer_shutdown & RCV_SHUTDOWN)) {
 			err = -EPIPE;
-			goto out_wait;
+			goto out_err;
 		}
 
 		err = transport->notify_send_pre_enqueue(vsk, &send_data);
 		if (err < 0)
-			goto out_wait;
+			goto out_err;
 
 		/* Note that enqueue will only write as many bytes as are free
 		 * in the produce queue, so we don't need to ensure len is
@@ -1618,7 +1625,7 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
 				len - total_written);
 		if (written < 0) {
 			err = -ENOMEM;
-			goto out_wait;
+			goto out_err;
 		}
 
 		total_written += written;
@@ -1626,11 +1633,11 @@ static int vsock_stream_sendmsg(struct socket *sock, struct msghdr *msg,
 		err = transport->notify_send_post_enqueue(
 				vsk, written, &send_data);
 		if (err < 0)
-			goto out_wait;
+			goto out_err;
 
 	}
 
-out_wait:
+out_err:
 	if (total_written > 0)
 		err = total_written;
 out:
@@ -1715,18 +1722,59 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 
 
 	while (1) {
-		s64 ready = vsock_stream_has_data(vsk);
+		s64 ready;
 
-		if (ready < 0) {
-			/* Invalid queue pair content. XXX This should be
-			 * changed to a connection reset in a later change.
-			 */
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
+		ready = vsock_stream_has_data(vsk);
 
-			err = -ENOMEM;
-			goto out;
-		} else if (ready > 0) {
+		if (ready == 0) {
+			if (sk->sk_err != 0 ||
+			    (sk->sk_shutdown & RCV_SHUTDOWN) ||
+			    (vsk->peer_shutdown & SEND_SHUTDOWN)) {
+				finish_wait(sk_sleep(sk), &wait);
+				break;
+			}
+			/* Don't wait for non-blocking sockets. */
+			if (timeout == 0) {
+				err = -EAGAIN;
+				finish_wait(sk_sleep(sk), &wait);
+				break;
+			}
+
+			err = transport->notify_recv_pre_block(
+					vsk, target, &recv_data);
+			if (err < 0) {
+				finish_wait(sk_sleep(sk), &wait);
+				break;
+			}
+			release_sock(sk);
+			timeout = schedule_timeout(timeout);
+			lock_sock(sk);
+
+			if (signal_pending(current)) {
+				err = sock_intr_errno(timeout);
+				finish_wait(sk_sleep(sk), &wait);
+				break;
+			} else if (timeout == 0) {
+				err = -EAGAIN;
+				finish_wait(sk_sleep(sk), &wait);
+				break;
+			}
+		} else {
 			ssize_t read;
 
+			finish_wait(sk_sleep(sk), &wait);
+
+			if (ready < 0) {
+				/* Invalid queue pair content. XXX This should
+				* be changed to a connection reset in a later
+				* change.
+				*/
+
+				err = -ENOMEM;
+				goto out;
+			}
+
 			err = transport->notify_recv_pre_dequeue(
 					vsk, target, &recv_data);
 			if (err < 0)
@@ -1752,35 +1800,6 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 				break;
 
 			target -= read;
-		} else {
-			if (sk->sk_err != 0 || (sk->sk_shutdown & RCV_SHUTDOWN)
-			    || (vsk->peer_shutdown & SEND_SHUTDOWN)) {
-				break;
-			}
-			/* Don't wait for non-blocking sockets. */
-			if (timeout == 0) {
-				err = -EAGAIN;
-				break;
-			}
-
-			err = transport->notify_recv_pre_block(
-					vsk, target, &recv_data);
-			if (err < 0)
-				break;
-
-			release_sock(sk);
-			prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-			timeout = schedule_timeout(timeout);
-			finish_wait(sk_sleep(sk), &wait);
-			lock_sock(sk);
-
-			if (signal_pending(current)) {
-				err = sock_intr_errno(timeout);
-				break;
-			} else if (timeout == 0) {
-				err = -EAGAIN;
-				break;
-			}
 		}
 	}
 
@@ -1789,27 +1808,8 @@ vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 	else if (sk->sk_shutdown & RCV_SHUTDOWN)
 		err = 0;
 
-	if (copied > 0) {
-		/* We only do these additional bookkeeping/notification steps
-		 * if we actually copied something out of the queue pair
-		 * instead of just peeking ahead.
-		 */
-
-		if (!(flags & MSG_PEEK)) {
-			/* If the other side has shutdown for sending and there
-			 * is nothing more to read, then modify the socket
-			 * state.
-			 */
-			if (vsk->peer_shutdown & SEND_SHUTDOWN) {
-				if (vsock_stream_has_data(vsk) <= 0) {
-					sk->sk_state = SS_UNCONNECTED;
-					sock_set_flag(sk, SOCK_DONE);
-					sk->sk_state_change(sk);
-				}
-			}
-		}
+	if (copied > 0)
 		err = copied;
-	}
 
 out:
 	release_sock(sk);
diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index 0a369bb44..56214736f 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -842,7 +842,7 @@ static void vmci_transport_peer_detach_cb(u32 sub_id,
 	 * qp_handle.
 	 */
 	if (vmci_handle_is_invalid(e_payload->handle) ||
-	    vmci_handle_is_equal(trans->qp_handle, e_payload->handle))
+	    !vmci_handle_is_equal(trans->qp_handle, e_payload->handle))
 		return;
 
 	/* We don't ask for delayed CBs when we subscribe to this event (we
@@ -1735,11 +1735,8 @@ static int vmci_transport_dgram_dequeue(struct vsock_sock *vsk,
 	/* Retrieve the head sk_buff from the socket's receive queue. */
 	err = 0;
 	skb = skb_recv_datagram(&vsk->sk, flags, noblock, &err);
-	if (err)
-		return err;
-
 	if (!skb)
-		return -EAGAIN;
+		return err;
 
 	dg = (struct vmci_datagram *)skb->data;
 	if (!dg)
@@ -2154,7 +2151,7 @@ module_exit(vmci_transport_exit);
 
 MODULE_AUTHOR("VMware, Inc.");
 MODULE_DESCRIPTION("VMCI transport for Virtual Sockets");
-MODULE_VERSION("1.0.2.0-k");
+MODULE_VERSION("1.0.4.0-k");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("vmware_vsock");
 MODULE_ALIAS_NETPROTO(PF_VSOCK);