socket: Add num connections to qio_net_listener_open_sync()

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

blockdev-nbd.c

@@ -101,7 +101,7 @@ void nbd_server_start(SocketAddress *addr, const char *tls_creds,
     qio_net_listener_set_name(nbd_server->listener,
                               "nbd-listener");
 
-    if (qio_net_listener_open_sync(nbd_server->listener, addr, errp) < 0) {
+    if (qio_net_listener_open_sync(nbd_server->listener, addr, 1, errp) < 0) {
         goto error;
     }
 

chardev/char-socket.c

@@ -1170,7 +1170,7 @@ static int qmp_chardev_open_socket_server(Chardev *chr,
     qio_net_listener_set_name(s->listener, name);
     g_free(name);
 
-    if (qio_net_listener_open_sync(s->listener, s->addr, errp) < 0) {
+    if (qio_net_listener_open_sync(s->listener, s->addr, 1, errp) < 0) {
         object_unref(OBJECT(s->listener));
         s->listener = NULL;
         return -1;

include/io/net-listener.h

@@ -95,6 +95,7 @@ void qio_net_listener_set_name(QIONetListener *listener,
  * qio_net_listener_open_sync:
  * @listener: the network listener object
  * @addr: the address to listen on
+ * @num: the amount of expected connections
  * @errp: pointer to a NULL initialized error object
  *
  * Synchronously open a listening connection on all
@@ -104,6 +105,7 @@ void qio_net_listener_set_name(QIONetListener *listener,
  */
 int qio_net_listener_open_sync(QIONetListener *listener,
                                SocketAddress *addr,
+                               int num,
                                Error **errp);
 
 /**

io/net-listener.c

@@ -62,6 +62,7 @@ static gboolean qio_net_listener_channel_func(QIOChannel *ioc,
 
 int qio_net_listener_open_sync(QIONetListener *listener,
                                SocketAddress *addr,
+                               int num,
                                Error **errp)
 {
     QIODNSResolver *resolver = qio_dns_resolver_get_instance();
@@ -82,7 +83,7 @@ int qio_net_listener_open_sync(QIONetListener *listener,
     for (i = 0; i < nresaddrs; i++) {
         QIOChannelSocket *sioc = qio_channel_socket_new();
 
-        if (qio_channel_socket_listen_sync(sioc, resaddrs[i], 1,
+        if (qio_channel_socket_listen_sync(sioc, resaddrs[i], num,
                                            err ? NULL : &err) == 0) {
             success = true;
 

migration/socket.c

@@ -181,7 +181,7 @@ static void socket_start_incoming_migration(SocketAddress *saddr,
 
     qio_net_listener_set_name(listener, "migration-socket-listener");
 
-    if (qio_net_listener_open_sync(listener, saddr, errp) < 0) {
+    if (qio_net_listener_open_sync(listener, saddr, 1, errp) < 0) {
         object_unref(OBJECT(listener));
         return;
     }

qemu-nbd.c

@@ -1054,7 +1054,7 @@ int main(int argc, char **argv)
     server = qio_net_listener_new();
     if (socket_activation == 0) {
         saddr = nbd_build_socket_address(sockpath, bindto, port);
-        if (qio_net_listener_open_sync(server, saddr, &local_err) < 0) {
+        if (qio_net_listener_open_sync(server, saddr, 1, &local_err) < 0) {
             object_unref(OBJECT(server));
             error_report_err(local_err);
             exit(EXIT_FAILURE);

ui/vnc.c

@@ -3765,7 +3765,7 @@ static int vnc_display_listen(VncDisplay *vd,
         qio_net_listener_set_name(vd->listener, "vnc-listen");
         for (i = 0; i < nsaddr; i++) {
             if (qio_net_listener_open_sync(vd->listener,
-                                           saddr[i],
+                                           saddr[i], 1,
                                            errp) < 0)  {
                 return -1;
             }
@@ -3780,7 +3780,7 @@ static int vnc_display_listen(VncDisplay *vd,
         qio_net_listener_set_name(vd->wslistener, "vnc-ws-listen");
         for (i = 0; i < nwsaddr; i++) {
             if (qio_net_listener_open_sync(vd->wslistener,
-                                           wsaddr[i],
+                                           wsaddr[i], 1,
                                            errp) < 0)  {
                 return -1;
             }