diff options
Diffstat (limited to 'apps/netutils/uiplib/uip_getmacaddr.c')
-rw-r--r-- | apps/netutils/uiplib/uip_getmacaddr.c | 104 |
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..f4f01a7f3 --- /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 <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 <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 */ |