diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-10-26 21:21:34 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-10-26 21:21:34 +0000 |
commit | a7e644a852025eeb8af8648f73aac7c9ffc315bd (patch) | |
tree | 437e4ba77b328999defee6771e5432bf6e135f07 /nuttx/netutils/uiplib/uip-getmacaddr.c | |
parent | 7326b1166b618ddc6b3eb9e9224b1f5ded5515a5 (diff) | |
download | nuttx-a7e644a852025eeb8af8648f73aac7c9ffc315bd.tar.gz nuttx-a7e644a852025eeb8af8648f73aac7c9ffc315bd.tar.bz2 nuttx-a7e644a852025eeb8af8648f73aac7c9ffc315bd.zip |
Correct some issues with IP/MAC address handling
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@355 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/netutils/uiplib/uip-getmacaddr.c')
-rw-r--r-- | nuttx/netutils/uiplib/uip-getmacaddr.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/nuttx/netutils/uiplib/uip-getmacaddr.c b/nuttx/netutils/uiplib/uip-getmacaddr.c new file mode 100644 index 000000000..a8f936113 --- /dev/null +++ b/nuttx/netutils/uiplib/uip-getmacaddr.c @@ -0,0 +1,102 @@ +/**************************************************************************** + * netutils/uiplib/uip-getmacaddr.c + * + * Copyright (C) 2007 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/types.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <string.h> +#include <errno.h> +#include <netinet/in.h> + +#include <net/uip/uip-lib.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 *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, SOCK_DGRAM, 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 */ |