1 files changed, 133 insertions, 0 deletions
diff --git a/nuttx/net/netdev_carrier.c b/nuttx/net/netdev_carrier.c
new file mode 100644
index 000000000..b32c1d666
--- /dev/null
+++ b/nuttx/net/netdev_carrier.c
@@ -0,0 +1,133 @@
+/****************************************************************************
+ * net/netdev_carrier.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Max Holtzberg <mh@uvc.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
+
+#include <sys/socket.h>
+#include <stdio.h>
+#include <semaphore.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <net/if.h>
+#include <net/ethernet.h>
+#include <nuttx/net/uip/uip-arch.h>
+
+#include "net_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: netdev_carrier_on
+ *
+ * Description:
+ *   Notifies the uip layer about an available carrier.
+ *   (e.g. a cable was plugged in)
+ *
+ * Parameters:
+ *   dev - The device driver structure
+ *
+ * Returned Value:
+ *   0:Success; negated errno on failure
+ *
+ ****************************************************************************/
+
+int netdev_carrier_on(FAR struct uip_driver_s *dev)
+{
+  if (dev)
+    {
+      dev->d_flags |= IFF_RUNNING;
+      return OK;
+    }
+
+  return -EINVAL;
+}
+
+/****************************************************************************
+ * Function: netdev_carrier_off
+ *
+ * Description:
+ *   Notifies the uip layer about an disappeared carrier.
+ *   (e.g. a cable was unplugged)
+ *
+ * Parameters:
+ *   dev - The device driver structure
+ *
+ * Returned Value:
+ *   0:Success; negated errno on failure
+ *
+ ****************************************************************************/
+
+int netdev_carrier_off(FAR struct uip_driver_s *dev)
+{
+  if (dev)
+    {
+      dev->d_flags &= ~IFF_RUNNING;
+      return OK;
+    }
+
+  return -EINVAL;
+}
+
+#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */