nuttx-apps/netutils/netlib/netlib_setmacaddr.c

94 lines
2.8 KiB
C
Raw Normal View History

/****************************************************************************
* apps/netutils/netlib/netlib_setmacaddr.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <net/if.h>
#include "netutils/netlib.h"
#ifdef CONFIG_NET
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: netlib_setmacaddr
*
* Description:
* Set the network driver MAC address
*
* Parameters:
* ifname The name of the interface to use
* macaddr MAC address to set, size must be IFHWADDRLEN
*
* Return:
* 0 on success; -1 on failure
*
****************************************************************************/
int netlib_setmacaddr(const char *ifname, const 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(NETLIB_SOCK_FAMILY,
NETLIB_SOCK_TYPE, NETLIB_SOCK_PROTOCOL);
if (sockfd >= 0)
{
struct ifreq req;
/* Put the driver name into the request */
strncpy(req.ifr_name, ifname, IFNAMSIZ);
/* Put the new MAC address into the request */
req.ifr_hwaddr.sa_family = NETLIB_SOCK_FAMILY;
memcpy(&req.ifr_hwaddr.sa_data, macaddr, IFHWADDRLEN);
/* Perform the ioctl to set the MAC address */
ret = ioctl(sockfd, SIOCSIFHWADDR, (unsigned long)&req);
close(sockfd);
}
}
return ret;
}
#endif /* CONFIG_NET */