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authorH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
commit9eddd22a7b53b1d02fbae0d987df8af122924248 (patch)
tree882f5152880b0b1aa2d7a0619d30065acc69fb16 /gpxe/src/net/nullnet.c
parentbbb8f15936b851e6a0ef6f7bb2c95197bff35994 (diff)
downloadsyslinux-9eddd22a7b53b1d02fbae0d987df8af122924248.tar.gz
Add gPXE into the source tree; build unified imagesyslinux-3.70-pre7
Diffstat (limited to 'gpxe/src/net/nullnet.c')
-rw-r--r--gpxe/src/net/nullnet.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/gpxe/src/net/nullnet.c b/gpxe/src/net/nullnet.c
new file mode 100644
index 00000000..7e199ce3
--- /dev/null
+++ b/gpxe/src/net/nullnet.c
@@ -0,0 +1,58 @@
+/*
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdint.h>
+#include <errno.h>
+#include <gpxe/iobuf.h>
+#include <gpxe/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,
+};