| /**************************************************************************** |
| * netutils/uiplib/uip_getmacaddr.c |
| * |
| * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <gnutt@nuttx.org> |
| * |
| * 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 <unistd.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); |
| } |
| close(sockfd); |
| } |
| } |
| return ret; |
| } |
| |
| #endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */ |