summaryrefslogtreecommitdiff
path: root/apps/netutils/uiplib/uip_getmacaddr.c
diff options
context:
space:
mode:
Diffstat (limited to 'apps/netutils/uiplib/uip_getmacaddr.c')
-rw-r--r--apps/netutils/uiplib/uip_getmacaddr.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/apps/netutils/uiplib/uip_getmacaddr.c b/apps/netutils/uiplib/uip_getmacaddr.c
new file mode 100644
index 000000000..c99bc7a7d
--- /dev/null
+++ b/apps/netutils/uiplib/uip_getmacaddr.c
@@ -0,0 +1,104 @@
+/****************************************************************************
+ * netutils/uiplib/uip_getmacaddr.c
+ *
+ * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 <sys/ioctl.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+
+#include <netinet/in.h>
+#include <net/if.h>
+
+#include <apps/netutils/uiplib.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: uip_getmacaddr
+ *
+ * Description:
+ * Get the network driver IP address
+ *
+ * Parameters:
+ * ifname The name of the interface to use
+ * macaddr The location to return the MAC address
+ *
+ * Return:
+ * 0 on sucess; -1 on failure
+ *
+ ****************************************************************************/
+
+int uip_getmacaddr(const char *ifname, uint8_t *macaddr)
+{
+ int ret = ERROR;
+ if (ifname && macaddr)
+ {
+ /* Get a socket (only so that we get access to the INET subsystem) */
+
+ int sockfd = socket(PF_INET, UIPLIB_SOCK_IOCTL, 0);
+ if (sockfd >= 0)
+ {
+ struct ifreq req;
+ memset (&req, 0, sizeof(struct ifreq));
+
+ /* Put the driver name into the request */
+
+ strncpy(req.ifr_name, ifname, IFNAMSIZ);
+
+ /* Perform the ioctl to get the MAC address */
+
+ ret = ioctl(sockfd, SIOCGIFHWADDR, (unsigned long)&req);
+ if (!ret)
+ {
+ /* Return the MAC address */
+
+ memcpy(macaddr, &req.ifr_hwaddr.sa_data, IFHWADDRLEN);
+ }
+ }
+ }
+ return ret;
+}
+
+#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */