1 files changed, 65 insertions, 0 deletions
diff --git a/src/VBox/Devices/PC/ipxe/src/net/nullnet.c b/src/VBox/Devices/PC/ipxe/src/net/nullnet.c
new file mode 100644
index 00000000..2948b38c
--- /dev/null
+++ b/src/VBox/Devices/PC/ipxe/src/net/nullnet.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <errno.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/netdevice.h>
+
+/** @file
+ *
+ * Null network device
+ *
+ */
+
+static int null_open ( struct net_device *netdev __unused ) {
+	return -ENODEV;
+};
+
+static void null_close ( struct net_device *netdev __unused ) {
+	/* Do nothing */
+};
+
+static int null_transmit ( struct net_device *netdev __unused,
+			   struct io_buffer *iobuf __unused ) {
+	return -ENODEV;
+};
+
+static void null_poll ( struct net_device *netdev __unused ) {
+	/* Do nothing */
+}
+
+static void null_irq ( struct net_device *netdev __unused,
+		       int enable __unused ) {
+	/* Do nothing */
+}
+
+struct net_device_operations null_netdev_operations = {
+	.open		= null_open,
+	.close		= null_close,
+	.transmit	= null_transmit,
+	.poll		= null_poll,
+	.irq   		= null_irq,
+};